Vacuum cleaner of exhaust circulation type

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a household electric vacuum cleaner, particularly an exhaust circulation type vacuum cleaner in which air is blown onto a surface to be cleaned to float dust and suck the dust.

【0002】

[Conventional technology]

Conventionally, a vacuum cleaner has a suction nozzle having an opening for taking in dust on the floor surface, a dust collecting chamber, and an electric blower that creates a negative pressure in the dust collecting chamber, and collects the sucked dust in the dust collecting chamber. A suction type vacuum cleaner that collects dust with a dust collecting filter and discharges the exhaust to the outside of the vacuum cleaner was common.

【0003】

Further, as a conventional exhaust circulation type vacuum cleaner provided with a means for blowing into a suction nozzle, for example, those described in Japanese Patent Application Laid-Open No. 11-9507 have been generally used. FIG. 9 is an overall configuration diagram of a conventional exhaust circulation type vacuum cleaner. In FIG. 9, 37 is a suction part, 38 is a handle, 39 is an electric blower, 40 is a dust collecting filter, 41 is an intake port, 42 is a reflux path, and 43 is an outlet.

【0004】

As shown in FIG. 9, the vacuum cleaner main body 36 has a suction portion 37 attached to the lower portion and a handle 38 projecting from the upper portion. Further, an electric blower 39 and a dust collecting filter 40 as a dust collecting part are built in the vacuum cleaner main body 36, and a suction port formed on the back surface of the air in the suction part 37 by the electric blower 39. It is sucked from 41, and the dust contained in the air is collected by the dust collection filter 40. An air return passage 42 is formed from the front end of the electric blower 39 to the front portion of the suction portion 37, and the tip of the return passage 42 opens into the suction portion 37 at the front end portion of the suction portion 37 to open the outlet 43. Is forming. The air outlet 43 opens diagonally backward and downward so that the angle α with respect to the surface to be cleaned is 30 to 45 °.

【0005】

When this exhaust circulation type vacuum cleaner is used, the air in the suction portion 37 is sucked from the suction port 41 by the electric blower 39, the dust is removed by the dust collection filter 40, and then the air returns through the electric blower 39. It is sent to the road 42, is ejected from the air outlet 43 into the suction unit 37, and is again sucked from the suction port 41 by the electric blower 39. At this time, the air ejected from the air outlet 43 is discharged downward and backward at an angle of 30 to 45 ° with respect to the surface to be cleaned, so that the air is blown into the inside of the hair legs such as a carpet to remove dust. It was pushed from the surface to raise it to the surface, and then carried to the suction port 41 for inhalation.

【0006】

[Problems to be Solved by the Invention]

However, since the above-mentioned conventional suction type vacuum cleaner sucks dust with an electric blower and collects it with a dust collecting filter, there is a problem that dust finer than the dust collecting filter is discharged to the outside. As a countermeasure, if the dust collection filter is made finer, the discharge of dust can be suppressed, but this will greatly increase the pressure loss in the dust collection filter, and the motor of the electric blower will have to be a high output motor. .. However, this could be a countermeasure for households with infants and the sick to use higher-power suction vacuum cleaners than necessary. And such vacuum cleaners are expensive and expensive to maintain.

【0007】

On the other hand, in the conventional exhaust circulation type vacuum cleaner as shown in FIG. 9, although the above-mentioned problems of the suction type vacuum cleaner can be avoided, the positive pressure exhaust is returned to the suction nozzle, so that the suction force is increased. There is a problem that the strong part (high negative pressure range) is narrowed and the suction power is insufficient to collect dust such as hair and pet hair adsorbed by static electricity on the surface of mats and flooring. As a countermeasure against static electricity, there is a proposal to provide a static eliminator on the suction nozzle to eliminate static electricity, but this is only general static eliminator and cannot be expected to have an effective static eliminator effect that would be useful in an exhaust circulation vacuum cleaner. Met. In this way, the exhaust circulation type vacuum cleaner has the advantage that the output of the electric blower 39 can be made relatively small, but it does not suck a large amount of outside air by creating a high vacuum inside the suction part 37, but sucks it with static electricity. It was quite difficult to suck in the dust.

【0008】

Therefore, in order to solve such a conventional problem, the present invention can perform cleaning without polluting the air in the room, and can surely remove hair, pet hair, etc. that are adsorbed by static electricity on the mat or flooring surface. It is an object of the present invention to provide an exhaust circulation type vacuum cleaner that collects dust.

【0009】

[Means for solving problems]

In order to solve the above problems, the present invention is an exhaust circulation type vacuum cleaner in which a first static elimination member is provided in a first suction chamber, and the first static elimination member is a conductive material. It is characterized in that it is formed and installed in front of the first spraying portion in the forward direction of the suction nozzle.

【0010】

As a result, since there is no exhaust gas, cleaning can be performed without polluting the air in the room, and hair, pet hair, etc. adsorbed by static electricity on the surface of the mat or flooring can be reliably collected.

【0011】

BEST MODE FOR CARRYING OUT THE INVENTION

The invention according to claim 1 of the present invention includes a suction nozzle having an opening for taking in dust on the cleaning surface, a dust collecting chamber communicating with the suction nozzle, and an electric blower that creates a negative pressure in the dust collecting chamber. , The first exhaust passage that returns the exhaust of the electric blower to the suction nozzle, the first spraying part that is installed in the suction nozzle and provided in the first exhaust passage, and the first spraying part that makes the inside of the suction nozzle forward. In the first suction chamber and the second suction chamber formed by being divided into front and rear, the first suction port and the second suction port provided in each of the first suction chamber and the second suction chamber, and the first suction chamber. It is an exhaust circulation type vacuum cleaner provided with a first static elimination member, and is characterized in that the first static elimination member is made of a conductive material and is installed in front of the first spraying portion in the forward direction of the suction nozzle. Because it is an exhaust circulation type vacuum cleaner, it can be cleaned without polluting the air in the room compared to the conventional suction type electric vacuum cleaner, and the first static elimination member compared to the conventional exhaust circulation type electric vacuum cleaner. By providing the nozzle with a static elimination function, it is possible to easily collect dust such as hair and pet hair that are attracted to the mat and flooring by the action of static electricity.

【0012】

The invention according to claim 2 of the present invention is the exhaust circulation type vacuum cleaner according to claim 1, wherein second exhaust passages are provided at both left and right ends of the first static elimination member in the suction nozzle. Therefore, by supplying exhaust gas from the left and right directions in the first suction chamber, well-balanced dust collection is performed in the entire first suction chamber, so that the dust collection performance is improved.

【0013】

The invention according to claim 3 of the present invention is characterized in that the first exhaust passage is branched and the second spray portion provided in the branched exhaust passage is installed in the first suction chamber. Since the exhaust circulation type vacuum cleaner described in Items 1 and 2, it is possible to suppress the blown exhaust from the first spraying part to the first suction chamber from the opposite direction, thus preventing air leakage from the front of the suction nozzle. Becomes easier.

【0014】

The invention according to claim 4 of the present invention is the exhaust circulation type vacuum cleaner according to claims 1 to 3, wherein the first static elimination member is a mixed material in which a conductive material is mixed. It is possible to create a sealing material having various characteristics depending on the usage environment and usage conditions, such as a material having abrasion resistance and a material having rigidity.

【0015】

The invention according to claim 5 of the present invention is the exhaust circulation type vacuum cleaner according to claims 1 to 3, wherein the first static eliminator member is made of carbon fiber, and therefore has a very high static electricity in terms of material. Removal performance can be obtained.

【0016】

The invention according to claim 6 of the present invention is the exhaust circulation type vacuum cleaner according to claims 1 to 5, wherein the first static elimination member is removable. Therefore, cleaning or replacement of the static elimination member, etc. Maintenance is improved.

【0017】

The invention according to claim 7 of the present invention is characterized in that a rotating brush and / or a rotating blade is installed in front of the first static elimination member in the first suction chamber in the forward direction of the suction nozzle. Since it is an exhaust circulation type vacuum cleaner described in items 1 to 6, even in various carpets such as loop piles, cut piles, and shaggy, the rotating brush and / or blade has an added action of scraping out dust in the carpet. Dust performance can be improved.

【0018】

The invention according to claim 8 of the present invention is the exhaust circulation type vacuum cleaner according to claim 7, wherein the brush member of the rotary brush and / or the blade member of the rotary blade is made of a conductive material. Therefore, by adding the static electricity removing ability to the rotating brush and / or the rotating blade, it is possible to further improve the static electricity removing ability.

【0019】

The exhaust according to claim 7, wherein the brush member of the rotary brush and / or the blade member of the rotary blade is a mixed material in which a conductive material is mixed. Since it is a circulation type vacuum cleaner, it is possible to produce a sealing material having various characteristics depending on the usage environment and usage conditions, such as a material having abrasion resistance and a material having rigidity.

【0020】

In the invention described in claim 10 of the present invention, the brush member of the rotating brush is Cu on the surface of an acrylic or nylon brush.₉S₅The exhaust circulation type vacuum cleaner according to claim 9, which is a mixed material of a material having a film formed in the above and nylon, and therefore has excellent wear resistance, is an inexpensive material, and has excellent mass productivity. Brushes can be created.

【0021】

The exhaust circulation type according to claim 1 to 10, wherein the invention according to claim 11 of the present invention is characterized in that a second static elimination member is installed behind the second suction chamber in the forward direction of the suction nozzle. Since it is a vacuum cleaner, it is possible to suppress the spray exhaust from the first spray portion to the second suction chamber, so that it is easy to prevent air leakage from the rear of the suction nozzle.

【0022】

The invention according to claim 12 of the present invention is the exhaust circulation type vacuum cleaner according to claim 11, wherein the second static eliminator member is made of a conductive material, and thus the influence of the first spraying portion. The static electricity generated in the above can also be removed.

【0023】

The invention according to claim 13 of the present invention is the exhaust circulation type vacuum cleaner according to claim 11 or 12, wherein the second static elimination member is a mixed material in which a conductive material is mixed. Therefore, it is possible to produce a sealing material having various characteristics depending on the usage environment and usage conditions, such as a material having abrasion resistance and a material having rigidity.

【0024】

The invention according to claim 14 of the present invention is the exhaust circulation type vacuum cleaner according to claim 11 or 12, wherein the second static eliminator member is carbon fiber, and therefore the material is very high. It is possible to obtain static electricity removal performance.

【0025】

The exhaust circulation type cleaning according to claim 1 to 14, wherein the invention according to claim 15 of the present invention has a detachable member in which the first static elimination member and the rotary brush and / or the rotary blade can be detached at the same time. Since it is a machine, it is possible to perform maintenance on two types of parts with one part.

【0026】

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

【0027】

(Embodiment 1) FIG. 1 shows an overall configuration diagram of an exhaust circulation type vacuum cleaner according to the first embodiment of the present invention. FIG. 2 is an enlarged view of the suction nozzle of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention, and FIG. 3 is an enlarged view of the bottom surface of the suction nozzle of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention.

【0028】

In FIG. 1, 1 is a floor surface which is one of the surfaces to be cleaned. 2 is a suction nozzle, 3 is a nozzle joint, 4 is a vacuum cleaner body, 5 is a dust collection chamber, and 6 is a dust collection filter. 7 is a fan casing, 8 is a suction fan, 9 is a suction fan suction port, 10 is a motor, and 11 is a suction fan discharge port. The fan casing 7, the suction fan 8, the suction fan suction port 9, the motor 10, and the suction fan discharge port 11 constitute the electric blower of the exhaust circulation type vacuum cleaner of the first embodiment.

【0029】

12 is the first exhaust passage provided in the vacuum cleaner body 4, 13 is the handle for operation, 14 is the operation switch for starting and stopping the vacuum cleaner, and 15 is the power cord that supplies power to the motor 10 etc. .. Reference numeral 16 denotes a first spraying portion provided at the end of the first exhaust passage 12 in the suction nozzle 2 and capable of spraying exhaust gas onto the floor surface 1. Reference numeral 17 denotes one first suction chamber divided into two by the first spraying portion 16 in the suction nozzle 2, and 18 is the other second suction chamber also divided into two by the first spraying portion 16. Reference numeral 19 denotes a first suction port provided in the first suction chamber 17, and 20 is a second suction port provided in the second suction chamber 18. The air in the suction nozzle 2 that covers the floor surface 1 by the first suction port 19 and the second suction port 20 is sucked by the action of the suction fan 8. 21 is a first opening in which the first suction chamber 17 is opened toward the floor surface 1, and 22 is a second opening in which the second suction chamber 18 is opened toward the floor surface 1.

【0030】

Reference numeral 23 denotes a first static eliminating member provided on the side wall surface of the first suction chamber 17 in front of the first spraying portion 16 and formed of a conductive material for static electricity elimination. The tip of the first static elimination member 23 is placed at a position at a small distance from the floor surface 1. Reference numeral 24 is a roller, and 25 is a second exhaust passage provided at both ends of the first static elimination member 23.

【0031】

As shown in FIG. 1, the exhaust circulation type vacuum cleaner according to the first embodiment is composed of a suction nozzle 2, a vacuum cleaner main body 4, and a nozzle joint 3 that connects them with an empty body inside. If the nozzle joint 3 is provided with a lock button (not shown) using a spring or the like and the suction nozzle 2 and the vacuum cleaner body 4 are detachable, the convenience during storage and transportation is improved.

【0032】

Inside the vacuum cleaner main body 4, a dust collecting chamber 5 having a dust collecting filter 6 inside communicating with a nozzle joint 3 and a suction fan 8 communicating with the dust collecting chamber 5 via a suction fan suction port 9 are provided inside. The fan casing 7 and the motor 10 for driving the suction fan 8 are provided. A suction fan discharge port 11 is formed in the fan casing 7, and the suction fan discharge port 11 is communicated with the first exhaust passage 12. The first exhaust passage 12 passes through the suction nozzle 2 and extends to the vicinity of the floor surface 1. Further, a power cord 15 and a handle 13 are installed outside the vacuum cleaner main body 4, and an operation switch 14 is installed on the handle 13. The operation switch 14 may be installed in a place other than the handle 13 as long as it is convenient for the user and less likely to cause malfunction, and the operation switch 14 may be installed outside the suction nozzle 2 (not shown). May be.

【0033】

In FIG. 2, the inside of the suction nozzle 2 has a first suction chamber 17 in the front and a second suction chamber 18 in the rear in the forward direction (traveling direction) of the suction nozzle by the first spraying portion 16 communicating with the first exhaust passage 12. It is divided into and. The first suction chamber 17 and the second suction chamber 18 are provided with a first suction port 19 and a second suction port 20 communicating with the nozzle joint 3, and a first opening 21 and a second opening 22 covering the floor surface 1. There is.

【0034】

By the way, a first static elimination member 23 made of a conductive material is provided on the wall surface in the first suction chamber 17 in front of the first spraying portion 16. Further, a plurality of rollers 24 for smoothly running on the floor surface 1 are installed on the outer bottom surface of the suction nozzle 2. In FIG. 3, the left-right dimension of the first static elimination member 23 is shorter than the left-right dimension of the first opening, whereby the second exhaust passage 25 is formed at both the left and right ends of the first opening.

【0035】

Next, the overall operation and operation when sucking using the exhaust circulation type vacuum cleaner of the first embodiment will be described. In FIG. 1, when the power cord 15 is connected to an outlet (not shown) and the operation switch 14 is turned on, the motor 10 operates and the suction fan 8 rotates. As a result, in the fan casing 7, the suction fan suction port 9 performs the intake indicated by the arrow a, and the suction fan discharge port 11 performs the exhaust indicated by the arrow b. Negative pressure is generated in the dust collecting chamber 5 by this intake air, the intake air is taken from the suction nozzle 2 through the nozzle joint 3, and the exhaust from the suction fan discharge port 11 is the first exhaust passage as shown by the arrow c. It is blown into the suction nozzle 2 through 12. This blown exhaust gas (hereinafter referred to as circulating air) floats dust (not shown) scattered on the floor surface 1, and at the same time, is sucked into the dust collection chamber 5 again through the nozzle joint 3, and only the dust is collected by the dust collection filter. Captured at 6, the circulating wind repeats exhaust circulation. In places where the surface to be cleaned is near a wall in the room and the intake force in the corner is likely to be insufficient, a part of the circulating air may be discharged to the outside of the vacuum cleaner in order to improve the suction performance. For this reason, a switching valve (not shown) is provided to switch between a mode in which circulating air is not discharged to the outside of the vacuum cleaner (100% exhaust circulation) and a mode in which part of the air is discharged to the outside of the vacuum cleaner (partial exhaust mode). It is better to be able to. In this case, the mode can be switched according to the floor surface 1 and the usage environment, which improves convenience.

【0036】

In FIGS. 2 and 3, the operation and operation of the suction nozzle 2 when sucking using the exhaust circulation type vacuum cleaner of the first embodiment will be described. The circulating wind passes through the first exhaust passage 12 and is blown from the first spraying portion 16 to the floor surface 1 as shown by the arrow d1, and the flow direction is changed on the floor surface 1, but the dust on the floor surface 1 is this. It winds up due to the dynamic pressure (impact force) at that time, and floats in the first suction chamber 17 and the second suction chamber 18, respectively. At this time, since the suction fan 8 is operated, dust is sucked through the first suction port 19 and the second suction port 20 by this suction action as shown by the arrows e and f.

【0037】

The first spraying portion 16 is provided in the middle of the suction nozzle 2 to divide the inside of the suction nozzle 2 into two. First, the dust that could not be collected in the first suction chamber 17 is collected by the suction nozzle 2. This is to improve the dust collection capacity by collecting the dust in the second stage again in the second suction chamber 18 by traveling. The second reason is that the circulating air that is blown onto the floor surface 1 and then reflected in various directions can be sucked in separately in the front and rear two chambers to prevent the circulating air from leaking from the suction nozzle 2. can give. For example, if the first spraying portion 16 is provided at the head of the suction nozzle 2, the flow forward of the first spraying portion 16 leaks to the outside, but the first spraying portion 16 is provided in the middle of the suction nozzle 2. It is possible to prevent leakage.

【0038】

By the way, there are various types of flooring 1 such as flooring, tatami mats, carpets, vinyl chloride mats, etc., and the dust scattered on the floor surface 1 is made of sand and dust, body hair of humans and pets, and chemical fibers such as cotton, wool and acrylic. There are a wide variety of things such as lint and food fragments. By combining these floor surfaces 1 and dust, it is possible to combine human hair and pet hair on a PVC mat, for example, nylon lint on a polypropylene carpet, and the like, and indoors in winter. In such a low temperature and low humidity environment, static electricity is generated between the floor surface 1 and the dust due to triboelectric charging or peeling charging, and the dust is adsorbed on the floor surface 1 and collected by a vacuum cleaner. It becomes very difficult to do. In particular, since the exhaust circulation type vacuum cleaner returns the positive pressure circulating air to the suction nozzle 2, the negative pressure range inside the suction nozzle 2 becomes relatively narrow, and the dynamic pressure is further increased to suck the dust adsorbed by static electricity. There is no choice but to raise it or eliminate static electricity.

【0039】

Therefore, in the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention, the first static eliminator member 23 made of a conductive material is installed on the side wall surface of the first suction chamber 17 in front of the first spraying portion 16. As a result, static electricity on the floor surface is removed by corona discharge or the like, and the dust collection performance on the floor surface where static electricity is generated is improved. The material of the first static elimination member here is Cu on the surface of metal fiber such as stainless steel, acrylic or nylon fiber.₉S₅Examples thereof include conductive film fibers, carbon fibers, carbon composite fibers, conductive rubber, conductive silicon, conductive urethane, etc., on which a conductive film is formed. Further, for example, it is also possible to use a mixed hair fiber (mixed material) in which a conductive film fiber and a nylon fiber or the like are mixed. In this case, the nylon fiber protects the conductive film fiber, so that the abrasion resistance is improved. ..

【0040】

The first static elimination member may be provided directly on the suction nozzle 2, but as a separate component, for example, it is shown in an enlarged view of the first static elimination member of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention in FIG. As shown in the enlarged view of the first static elimination member of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention in FIG. A fibrous or plate-shaped conductive material obtained by sewing the sex material 26b onto the sewing base material 28, as shown in the enlarged view of the first static elimination member of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention in FIG. Prepare something that 26 is sandwiched between metal plates 29 such as aluminum and fixed, and glue it with adhesive or double-sided tape, fasten it with screws, and put several holding claws on the suction nozzle 2 side. It is preferable to provide a groove-shaped holding portion (not shown) to be held and press-fit it into the holding portion to make it removable. This improves maintainability such as cleaning and replacement.

【0041】

By the way, as described above, the static elimination action of the first static elimination member 23 depends on the conductive material constituting the first static elimination member 23, but it is also large in the position where the static elimination is performed in the suction nozzle 2, that is, the installation position thereof. to be influenced. The present inventors investigated the charge distribution in the suction nozzle 2 and obtained an interesting finding that the place where the amount of static electricity is the largest is near the first spraying portion 16. This is because the circulating air blown from the first spraying unit 16 has a temperature higher than normal temperature due to the influence of exhaust heat of the motor 10, and also violently collides with the floor surface 1, causing dust to be disturbed and friction. It is considered that the charge progresses and the charge further progresses. As a result of diligent examination, the most effective installation position of the first static elimination member 23 is the wall surface side in the first suction chamber 17 at a position near the front of the first spraying portion 16. The reason is that the circulating air is blown out from the first spraying unit 16 to remove static electricity before further charging is applied, and the dust adhering to the static electricity is suspended by the dynamic pressure of the circulating air, thereby promoting dust collection. At the same time, it is considered that the static electricity caused by the circulating wind itself can be prevented by the first static eliminator member 23 provided nearby.

【0042】

Further, second exhaust passages 25 are formed at both left and right ends of the first static elimination member 23. As shown by the arrow d2, the circulating air blown from the first blowing portion 16 through the second exhaust passage 25 wraps around from both sides of the first suction chamber 17 and is sucked into the first suction port 19. Dust is relatively easy to remain on both sides of the first suction chamber 17, but this makes it possible to efficiently wind up the dust on both sides and enable well-balanced dust collection.

【0043】

(Embodiment 2) The exhaust circulation type vacuum cleaner according to the second embodiment of the present invention will be described below with reference to the drawings. FIG. 7 is an overall configuration diagram of the exhaust circulation type vacuum cleaner according to the second embodiment of the present invention. In the exhaust circulation type vacuum cleaner of the second embodiment, the members having the same reference numerals as those of the exhaust circulation type vacuum cleaner of the first embodiment are basically the same. Let's omit it.

【0044】

In FIG. 7, 30 is a rotating brush, 31 is a second spraying part branched from the first exhaust passage 12, 32 is a second static elimination member, 33 is a holding groove, 34 is a rotating shaft, 35 is a holding member, and 36 is cleaning. It is the main body of the machine. The difference between the exhaust circulation type vacuum cleaner of the second embodiment and the exhaust circulation type vacuum cleaner of the first embodiment is that the rotating brush 30, the second spraying portion 31, the holding member 35, and the inside of the first suction chamber 17 are different. It has a holding groove 33 and a second static elimination member 32. The rotary brush 30 may be a rotary blade (not shown), both the rotary brush 30 and the rotary blade may be provided together, or both may be mixed.

【0045】

Next, the operation and operation of the suction nozzle 2 when sucking using the exhaust circulation type vacuum cleaner of the second embodiment will be described. When the operation switch 14 is turned on, the same operation as in the first embodiment is performed, and the rotating brush 30 rotates. The rotary brush 30 may be rotated by installing a small motor (not shown) inside the suction nozzle 2 and connecting it with a timing belt or the like, or by using the circulating wind blown by the second spraying portion and using wind power. You may rotate it. By adding the impact force due to the rotation of the rotating brush 30, it becomes possible to scrape out the dust mixed in the inside of the carpet, and the dust collecting performance is further improved. When the brush portion of the rotating brush 30 is made of a conductive material, corona discharge occurs before and after contact with the floor surface 1, further improving the static electricity removal performance of the floor surface 1.

【0046】

As a conductive material for the brush part of this rotating brush 30, a metal brush such as stainless steel, or Cu on the surface of acrylic or nylon.₉S₅Examples thereof include a conductive film brush, a carbon brush, a carbon composite brush, a mixed hair brush (mixed material) in which a conductive film brush and a nylon brush are mixed, and the like. When the rotary blade 30 is used and a conductive material is used for the blade portion, conductive rubber, conductive silicon, conductive urethane, or the like is suitable.

【0047】

When the rotating brush 30 is installed in the first suction chamber 17, the capacity of the first suction chamber 17 needs to be extra by the amount of installing the rotating brush 30, but the capacity of the first suction chamber 17 is reduced. Is more preferable. The reason is that if the capacity of the first suction chamber 17 is large, the wind speed in the first suction chamber 17 decreases. However, if the size is excessively reduced, the rotating brush 30 comes too close to the first static elimination member 23, and relatively large dust cannot be collected. Therefore, it is necessary to leave an appropriate distance between the rotating brush 30 and the first static elimination member 23. For example, if the diameter of the rotating brush 30 is about 30 mm, the contact between the rotating brush 30 and the floor surface is required. The distance from the point to the first static elimination member 23 is preferably set to about 15 to 20 mm.

【0048】

Further, as shown in the enlarged view of the bottom surface of the suction nozzle of the exhaust circulation type vacuum cleaner according to the second embodiment of the present invention of FIG. 8, the suction nozzle 2 holding the rotating shaft 34 protruding from one end of the rotating brush 30. If a part of the holding member 35 is used and can be attached and detached, maintenance related to cleaning and replacement of the rotating brush 30 becomes easy. At this time, if the first static elimination member 23 has a form as shown in FIG. 6, a holding groove 33 is provided in the suction nozzle 2, and only both ends of the metal plate 29 of the first static elimination member 23 are fixed, the holding member. With 35, the first static elimination member 23 can be attached and detached together with the rotating brush 30.

【0049】

The second blowing portion 31 blows the circulating air to the first suction chamber 17 as shown by the arrow d3, because this circulating wind is in the opposite direction to the circulating wind indicated by the arrow d2 blown from the first blowing portion. , This is suppressed and it becomes easy to prevent air leakage from the front of the suction nozzle 2.

【0050】

The second static eliminator member 32 prevents air leakage from the rear of the suction nozzle 2 of the circulating air indicated by the arrow d1, and when this is made of a conductive material, the circulating air blown from the first spraying portion 16 is used. Even if static electricity is generated, it can be removed, and no static electricity remains on the floor surface 1 even after cleaning is completed. As the material of the second static elimination member, the same material as the first static elimination member described above can be used.

【0051】

[Effect of the invention]

As described above, in the exhaust circulation type vacuum cleaner according to claim 1 of the present invention, a first static eliminator member is provided on the bottom surface of the suction nozzle, and the first static eliminator member is formed of a conductive material and the suction nozzle. Since it is installed in front of the first spraying part in the forward direction of, there is no need for a high-power electric blower, and hair and pet hair that are adsorbed on the mat and flooring surface due to the action of static electricity are reliable and easy. It is possible to collect dust without worrying about air pollution in the room of infants and sick people, and it is possible to suck dust adsorbed by static electricity without reciprocating the suction nozzle many times, so it is cheap and energy saving. Can be a vacuum cleaner.

【0052】

The exhaust circulation type vacuum cleaner according to claim 2 has second exhaust passages on the left and right ends of the first static elimination member. Therefore, exhaust is supplied from the left and right directions in the first suction chamber to obtain the first suction. Well-balanced dust collection is performed in the entire room, dust collection performance is improved, the number of round trips of the vacuum cleaner is reduced, and cleaning can be performed without waste, so that the vacuum cleaner can be made energy-saving.

【0053】

In the exhaust circulation type vacuum cleaner according to claim 3, since the first exhaust passage is branched and the second spray portion is provided in the branched exhaust passage, the spray from the first spray portion to the first suction chamber is provided. Exhaust can be suppressed from the opposite direction, air leakage from the front of the suction nozzle can be prevented, and even if there is some variation that is thought to be the cause of air leakage from the suction nozzle in the manufacturing process, it will be absorbed. Therefore, the number of lot-outs can be reduced.

【0054】

In the exhaust circulation type vacuum cleaner according to claim 4, since the first static elimination member is a mixed material in which a conductive material is mixed, it varies depending on the usage environment and usage conditions such as a material having wear resistance and a material having rigidity. It is possible to create a sealing material with various characteristics, and by selecting the material, the range of use of the vacuum cleaner can be expanded.

【0055】

In the exhaust circulation type vacuum cleaner according to claim 5, since the first static eliminator member is carbon fiber, it is possible to obtain extremely high static electricity removal performance in terms of material, and the number of round trips on the cleaning surface where static electricity is generated. It can be used as an energy-saving vacuum cleaner because it can be cleaned without waste.

【0056】

In the exhaust circulation type vacuum cleaner according to claim 6, since the first static elimination member is removable, maintainability such as cleaning and replacement of the static elimination member is improved.

【0057】

The exhaust circulation type vacuum cleaner according to claim 7 has a rotating brush and / or a rotating blade installed in front of the first static eliminator member in the forward direction of the suction nozzle in the first suction chamber, and thus is a loop pile. For various carpets such as cut piles and shaggy, the rotating brush and / or blade has the added effect of scraping out dust in the carpet, improving dust collection performance and reducing the labor required for cleaning on the carpet. it can.

【0058】

In the exhaust circulation type vacuum cleaner according to claim 8, since the brush member of the rotary brush and / or the blade member of the rotary blade is made of a conductive material, the rotary brush and / or the rotary blade also has an ability to remove static electricity. By adding it, it is possible to further improve the static electricity removal ability, reduce the number of round trips on the cleaning surface where static electricity is generated, and perform lean cleaning, so that it can be an energy-saving vacuum cleaner.

【0059】

The exhaust circulation type vacuum cleaner according to claim 9 has a material having abrasion resistance and rigidity because the brush member of the rotating brush and / or the blade member of the rotating blade is a mixed material in which a conductive material is mixed. It is possible to create a sealing material having various characteristics depending on the usage environment and usage conditions such as the material, and by selecting the material, the range of use of the vacuum cleaner is widened.

【0060】

In the exhaust circulation type vacuum cleaner according to claim 10, the brush member of the rotating brush is Cu on the surface of an acrylic or nylon brush.₉S₅Since it is a mixed material of nylon and the material on which the film is formed, it is possible to create a rotating brush that is an inexpensive material and has excellent mass productivity, and the initial cost is reduced by reducing the material cost and process cost. Leads to a reduction in

【0061】

In the exhaust circulation type vacuum cleaner according to claim 11, since the second static elimination member is installed behind the second suction chamber in the forward direction of the suction nozzle, the spray exhaust from the first spray portion to the second suction chamber is suppressed. Therefore, it becomes easy to prevent air leakage from the rear of the suction nozzle, and even if some variation that is considered to be the cause of air leakage from the suction nozzle occurs in the manufacturing process, it is absorbed. The number of lot outs can be reduced.

【0062】

In the exhaust circulation type vacuum cleaner according to claim 12, since the second static eliminator member is made of a conductive material, it is possible to remove static electricity generated by the influence of the first spraying portion, and after cleaning is completed. It is possible to reduce the discomfort caused by static electricity without leaving static electricity on the floor surface.

【0063】

In the exhaust circulation type vacuum cleaner according to claim 13, since the second static elimination member is a mixed material in which a conductive material is mixed, the exhaust circulation type vacuum cleaner varies depending on the usage environment and usage conditions such as a material having wear resistance and a material having rigidity. It is possible to create a sealing material with various characteristics, and by selecting the material, the range of use of the vacuum cleaner can be expanded.

【0064】

In the exhaust circulation type vacuum cleaner according to claim 14, since the second static eliminator member is carbon fiber, extremely high static electricity removal performance can be obtained in terms of material, and static electricity is left on the floor surface after cleaning is completed. It is possible to reduce the discomfort caused by static electricity.

【0065】

The exhaust circulation type vacuum cleaner according to claim 15 of the present invention has a detachable member in which the first static elimination member and the rotary brush and / or the rotary blade can be detached at the same time. It is possible to reduce the initial cost by reducing the number of parts.

[Simple explanation of drawings]

[Figure 1]

Overall configuration diagram of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention. [Figure 2]

Enlarged view of the suction nozzle of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention. [Fig. 3]

Enlarged view of the bottom surface of the suction nozzle of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention. [Fig. 4]

Enlarged view of the first static elimination member of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention. [Fig. 5]

Enlarged view of the first static elimination member of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention. [Fig. 6]

Enlarged view of the first static elimination member of the exhaust circulation type vacuum cleaner according to the first embodiment of the present invention. [Fig. 7]

Overall configuration diagram of the exhaust circulation type vacuum cleaner according to the second embodiment of the present invention. [Fig. 8]

Enlarged view of the bottom surface of the suction nozzle of the exhaust circulation type vacuum cleaner according to the second embodiment of the present invention. [Fig. 9]

Overall configuration of a conventional exhaust circulation vacuum cleaner [Explanation of symbols]

1 Floor 2 Suction nozzle 3 Nozzle fitting 4 Vacuum cleaner body 5 Dust collection room 6 Dust collection filter 7 Fan casing 8 Suction fan 9 Suction fan Suction port 10 motor 11 Suction fan discharge port 12 1st exhaust passage 13 handle 14 Operation switch 15 Power cord 16 1st spraying part 17 1st suction room 18 2nd suction room 19 1st suction port 20 2nd suction port 21 1st opening 22 2nd opening 23 1st static elimination member 24 roller 25 2nd exhaust passage 26a ~ c Conductive material 27 Flocking member 28 Sewing base material 29 metal plate 30 rotating brush 31 2nd spraying part 32 Second static elimination member 33 Retaining groove 34 axis of rotation 35 Holding member 36 Vacuum cleaner body 37 suction part 38 handle 39 Electric blower 40 Dust collection filter 41 Inhalation port 42 Reflux route 43 outlet a ~ f Circulating wind flow