Automatic refrigerating warehouse

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to an automatic freezing and refrigerating warehouse that stores a load that requires freezing and refrigerating storage, such as fresh food, and automatically carries in and out the load.

【0002】

[Conventional technology]

Conventionally, this type of automated warehouse is provided with a warehouse body whose inside is shielded from the outside and a cooler that blows cooling air into the warehouse body, and a shelf having a large number of load storage units in the vertical direction inside the warehouse body. A large number of loads are arranged in the horizontal direction, and the load is carried in and stored in the load storage section of the shelf by a mobile crane, and the load stored in the load storage section is carried out by the mobile crane.

【0003】

In the automatic freezing and refrigerating warehouse having the above configuration, the heat energy consumed to maintain the temperature inside the warehouse body is mainly the invading heat from the outside. The first of the invading heat is that it invades through the heat insulating material that forms the ceiling, wall, and floor of the warehouse body. The second reason is that the cooled air is released to the outside by opening and closing the door when the load is taken in and out, and the outside air invades from the opened door by the amount of the released air.

【0004】

Thirdly, the intrusion of outside air causes frost in the cooler, which is consumed due to the amount of heat generated when removing the frost. This is because the moisture contained in the air that invades from the outside carries the external heat into the refrigerator / freezer, and this moisture is rapidly cooled by the cooler to solidify on the surface of the heat exchanger and grow as frost. To do. Since the adhering growth of this frost reduces the heat transfer efficiency of the heat exchanger, it is necessary to remove the adhering frost on a regular basis. In addition to the above, heat energy consumed to maintain the temperature inside the warehouse body includes lighting in the refrigerator / freezer and heat generated by motors and the like.

【0005】

In all of the refrigerated warehouses currently in use, the doors of the entrances and exits are located close to the floor of the refrigerated warehouse, and the cooled, heavy air inside the warehouse is outside so that water can be discharged. The same amount of external air with a relatively light specific gravity invades.

【0006】

In the above-mentioned conventional freezing and refrigerating warehouse, generally, cooled air is blown out along the ceiling surface to evenly cool the temperature inside the freezing and refrigerating warehouse. Therefore, the air blown out as a result pushes up the air at the bottom of the freezing and refrigerating warehouse and cools this air. This air is relatively low temperature even in the warehouse, which results in lowering the evaporation temperature of the refrigerator, which leads to lowering the freezing efficiency.

【0007】

[Problems to be Solved by the Invention]

The present invention has been made in view of the above points, and energy saving is achieved by reducing the invading heat due to opening and closing of the door when loading and unloading as much as possible, and the cooling method in the freezing and refrigerating warehouse is changed to reduce the cooling efficiency. The purpose is to provide an automatic freezing and refrigerating warehouse that can improve.

【0008】

[Means for solving problems]

In order to solve the above problems, the invention according to claim 1 includes a warehouse main body whose inside is shielded from the outside and a cooler that blows cooling air into the warehouse main body, and a large number of the inside of the warehouse main body is provided in the vertical direction. In an automatic freezing and refrigerating warehouse in which a large number of shelves having a load storage section are arranged in the horizontal direction and the load is automatically loaded and unloaded into the load storage section of the shelf by a moving crane, the load is placed on the upper side of the warehouse body. It is characterized by providing a warehouse main body carry-in / out entrance having an opening / closing door for carrying in / out, and carrying in / out of cargo from the upper part of the warehouse main body through the warehouse main body carry-in / out entrance.

【0009】

As described above, the load is carried in and out from the upper part of the warehouse body through the warehouse body carry-in / out port provided on the upper side part of the warehouse body, so that the load is carried in / out from the warehouse body carry-in / out port provided on the upper side part of the warehouse body. The air discharged in connection with this is air that has a higher temperature and a lighter specific gravity than the lower part of the warehouse body, and the heavy air that has a lower temperature and a lower specific gravity as in the past is carried in and out of the load provided in the lower part of the warehouse body. A large amount of air does not flow out from the inlet, and the temperature inside the warehouse can be maintained at a predetermined temperature with less energy consumption.

【0010】

Further, according to the second aspect of the present invention, in the automatic freezing and refrigerating warehouse according to the first aspect, a front chamber whose upper part communicates with the warehouse main body carry-in / out port is provided on the side portion of the warehouse main body, and the lower side portion of the front chamber is provided. The cargo loading / unloading chamber is provided in, the lower part of the front chamber and the loading / unloading chamber are communicated with each other by the front chamber loading / unloading entrance having an opening / closing door, and the loading / unloading chamber is provided with a loading / unloading entrance having an opening / closing door. It is characterized by providing an elevating mechanism for elevating and lowering.

【0011】

With the above configuration, it rises to the warehouse body loading / unloading entrance via the elevating mechanism provided in the front room that is loaded into the loading / unloading room through the loading / unloading port, is carried into the warehouse body from the warehouse body loading / unloading port, and is carried into the warehouse body. The cargo carried out from the inside passes through the warehouse main body carry-out entrance, descends in the front room by an elevating mechanism, and is carried out through the load carry-in / out room. It is possible to minimize the amount of cooling air that flows out when the opening / closing doors provided in each of the above are opened / closed.

【0012】

Further, the invention according to claim 3 includes a warehouse main body whose inside is shielded from the outside and a cooler that blows cooling air into the warehouse main body, and a large number of load accommodating portions in the warehouse main body in the vertical direction. In an automatic freezing and refrigerating warehouse in which a large number of shelves are arranged in the horizontal direction and the cargo is automatically loaded and unloaded by a moving crane in the cargo storage section of the warehouse, a cooling air inlet is provided at the bottom of the warehouse body. A cooling air suction port is provided at the top, cooling air from the cooler is blown into the lower part of the warehouse body through the cooling air air inlet, and the cooled air that has risen due to temperature rise is passed through the cooling air suction port to the cooler from the upper part of the warehouse body. It is characterized by inhaling.

【0013】

As described above, the cooling air from the cooler is blown into the lower part of the warehouse body through the cooling air inlet, and the cooled air that has risen due to the temperature rise is sucked into the cooler from the upper part of the warehouse body through the cooling air suction port. Since the low air is piled up from the bottom, the cooling efficiency of the cooler is greatly improved.

【0014】

Further, the invention according to claim 4 includes a warehouse main body whose inside is shielded from the outside and a cooler that blows cooling air into the warehouse main body, and a large number of load accommodating portions in the warehouse main body in the vertical direction. In an automatic freezing and refrigerating warehouse in which a large number of shelves are arranged in the horizontal direction and the cargo is automatically loaded and unloaded by a moving crane in the cargo storage section of the warehouse, the warehouse body has an opening / closing door at the top of the warehouse to carry out the cargo. A warehouse main body carry-in / out port for loading and unloading is provided, a cooling air air inlet is provided at the lower part of the warehouse main body, and a cooling air suction port is provided at the upper part. The feature is that the cooling air from the cooler is blown into the lower part of the warehouse body through the cooling air inlet, and the cooled air that has risen due to the temperature rise is sucked into the cooler from the upper part of the warehouse body through the cooling air suction port.

【0015】

As described above, the cargo is carried in and out from the upper part of the warehouse body through the inlet / outlet of the warehouse body, and the cooling air from the cooler is blown into the lower part of the warehouse body through the cooling air inlet to raise the temperature and rise. Is sucked into the cooler from the upper part of the warehouse body through the cooling air suction port, so that the action of the invention according to claim 2 is added to the action of the invention according to claim 1, and the cooling air flows out as the load is carried in and out. Since the amount is small and the cooling efficiency is improved, the result is an automatic freezing and refrigerating warehouse that can significantly save energy.

【0016】

Further, in the invention according to claim 5, in the automatic freezing and refrigerating warehouse according to any one of claims 1 to 4, the mobile crane is an overhead traveling crane, and at least a part of a large number of shelves is in the horizontal direction. It is characterized by being a moving shelf.

【0017】

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings. 1 to 3 are views showing a configuration example of the automatic freezing and refrigerating warehouse according to the present invention, FIG. 1 is a plan view, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is a sectional view taken along the line BB of FIG. It is a figure.

【0018】

In FIGS. 1 to 3, 10 is a warehouse main body, and the warehouse main body 10 has a structure in which the inside is shielded from the outside by a ceiling 11, a side wall 12, and a floor 13 made of a heat insulating material. Inside the warehouse body 10, a large number of shelves 15 having a large number of load accommodating portions 14 in the vertical direction (8 in the figure) are arranged in the horizontal direction (6 rows in the figure). Of the large number of shelves 15, the shelves 15 fixed on both sides are fixed shelves 15-1 and 15-1, and the shelves 15 between the fixed shelves 15-1 and 15-1 move horizontally. There are 15-2 and 15-2 mobile shelves that can be used.

【0019】

An overhead traveling crane 16 is arranged in the upper part of the warehouse main body 10, and the overhead traveling crane 16 accommodates the load M and moves up and down to carry the load M into and out of the load accommodating portion 14 of the target shelf 15. It is equipped with a ceiling-mounted stacker crane 17 for hanging. The stacker crane 17 can travel in the front-rear direction (X direction) on the traveling rail 16-1 of the overhead traveling crane 16, and the traveling rail 16-1 of the overhead traveling crane 16 travels in the left-right direction (Y) along the traveling rail 18. It is possible to drive in the direction). As a result, the carriage 30 can be moved to the load storage unit 14 of the target shelf 15.

【0020】

On the upper side of the warehouse main body 10, a warehouse main body loading / unloading entrance 21 having an opening / closing door 20 for loading / unloading the load M is provided. Further, in the center of the side portion of the warehouse main body 10, an anterior chamber 22 whose upper part communicates with the warehouse main body carry-in / out entrance 21 is provided, and a loading / unloading chamber 23 is provided in the lower side portion of the front chamber 22. The lower part of the front chamber 22 and the side part of the loading / unloading chamber 23 are communicated with each other by the front chamber loading / unloading entrance 25 having the opening / closing door 24, and the loading / unloading chamber 23 is provided with the loading / unloading entrance 27 having the opening / closing door 26.

【0021】

A loading / unloading conveyor 28 is arranged at the loading / unloading entrance 27, a conveyor 29 for delivering the load M between the loading / unloading conveyors 28 is arranged in the loading / unloading chamber 23, and a conveyor 29 is arranged between the conveyors 29 in the front chamber 22. A carriage 30 for delivering the load M is provided. Further, the front chamber 22 is provided with an elevating mechanism (not shown) for mounting the load M on the carriage 30 and elevating the load M.

【0022】

To carry in the load M, the load is placed on the carry-in / out conveyor 28, the opening / closing door 26 is opened, the load M is carried into the loading / unloading chamber 23, and the opening / closing door 26 is closed. Next, the opening / closing door 24 is opened, the load M is carried onto the carriage 30, and the opening / closing door 24 is closed. The carriage 30 is raised to the warehouse main body carry-in / out entrance 21 by an elevating mechanism (not shown). Next, the opening / closing door 20 is opened and the load M is carried into the stacker crane 17. The overhead traveling crane 16 travels in the X and Y directions and the stacker crane 17 moves up and down to accommodate the load M in the load accommodating section 14 of the shelf 15. The load M is carried out from the load receiving unit 14 in the reverse order of the above.

【0023】

By carrying in and out the load through the warehouse body carry-in / out port 21 provided at the upper part of the warehouse body 10 as described above, when the load M is carried in / out, the amount of cooling air released in the warehouse body 10 and into the warehouse body 10 It is possible to minimize the inflow of outside air. A cooler 31 is provided above the anterior chamber 22 so that the inside of the anterior chamber 22 can be cooled.

【0024】

A cooling air inlet 32 is provided at the lower part of the warehouse main body 10, and a cooling air suction port 33 is provided at the upper part. Further, a cooler storage chamber 36 for accommodating the cooler 34 is provided on the side of the warehouse main body 10. The cooler accommodating chamber 36 communicates with the lower part of the warehouse main body 10 through the cooling air inlet 32, and also communicates with the upper part of the warehouse main body 10 through the suction duct 35 and the cooling air suction port 33.

【0025】

The cooling air from the cooler 34 is blown into the lower part of the warehouse body 10 through the cooling air inlet 32. The blown cooling air gradually rises while rising in temperature, and is sucked into the cooler 34 from the cooling air suction port 33 through the suction duct 35. Then, it is cooled and blown into the lower part of the warehouse body 10 through the cooling air inlet 32.

【0026】

As described above, the cooling air from the cooler 34 is blown into the lower part of the warehouse body 10 through the cooling air inlet 32, and the heated cooling air is sucked into the cooler from the upper part of the warehouse body 10 through the cooling air suction port 33. Since the air with a low temperature is piled up from the bottom, the cooling efficiency of the cooler is greatly improved.

【0027】

[Examination of the number of defrosts] As described above, the loading / unloading of the load M is performed through the warehouse main body loading / unloading entrance 21 provided on the upper side of the warehouse main body 10, that is, the loading / unloading of the load M is the upper loading / unloading method. As a result, the outflow of cooling air in the warehouse body 10, that is, the inflow of outside air into the warehouse body 10 is reduced. Therefore, the frost on the cooler 34 due to the moisture of the outside air is reduced, and the number of defrosts is reduced. The difference in defrost in the following three methods (A) to (C) will be examined.

【0028】

(A) When loading and unloading load M with a forklift to a freezing and refrigerating warehouse (forklift method) (B) When loading M from the bottom of the freezing and refrigerating warehouse and carrying it out from the bottom (bottom-in / bottom-out method) (C) When the load M is carried in from the upper part of the freezing / refrigerating warehouse and carried out from the upper part (method of the present invention). [0029]

conditions Freezing and refrigerating warehouse size: Nominal capacity 1247 tons Freezing and refrigerating warehouse temperature: -30 ° C Freezing and refrigerating warehouse outside temperature: + 33 ° C (60wt%) Daily warehousing volume: 1247 tons x 0.03 = 37 tons Shape of pallet for loading load M: 1400L x 1100W x 1200H (Net load capacity: 750kg) Number of warehousing / delivery: 37 tons ÷ 0.75 × 2 (receipt / delivery) = 100 Times In the case of a forklift type, there are entrances and exits, so double (200 times) [0030]

Amount of frost on the cooler and allowable outside air amount Cooler Cooling capacity: 18Rt (from freezing notebook) Heat transfer area: 18Rt x 35m²/ RT = 630m² 【0031】

Frost amount Gkg Average frost thickness 1.0mm, frost weight 150kg / m³Then, the amount of frost on the cooler Gkg is G = 630m²× 1.0 mm × 1/1000 × 150 kg / m³= 94.5kg [0032]

Outside air intrusion amount Vm³Assuming that most of the frost on the cooler is due to the intrusion of outside air, the amount of intrusion of outside air Vm³Is Vm³= Ykg / m³× Δx = 94.5kg Outside air specific weight Y = 1.136kg / m³Absolute humidity difference Δx = 0.016kg-0.00022kg = 0.01578kg V = 94.5kg ÷ 1.136kg / m³÷ 0.01578kg = 5272m³Therefore, 5272m³Defrost is started when the outside air invades.

【0033】

The outside air is 5272m³The time until invasion is compared by the above three methods (A), (B), and (C). (A) Forklift type The opening and closing time of one door is 7 seconds. The door size is 2.5m x 2.5m, and the ceiling height inside the refrigerator is 6m. The amount of ventilation per second from the unit door area is the amount of cold air flowing out from the open heat shield door as shown in Fig. 4.³/ m²From "sec", 0.75m³/ secm³Therefore, the ventilation volume by opening and closing once vm³/ Times v = 0.75m³/ secm²× 2.5m × 2.5m × 7 seconds = 32.8m³/ Times If the number of door openings and closings per day is 200, the defrost interval N is N = 5272m³÷ (32.8m³× 200 times / day) = 0.8 Therefore, defrosting is required once every 0.8 days (once every 19 hours).

【0034】

(B) Bottom-in / bottom-out method (general automatic freezing / refrigerating warehouse) One door opening and closing time is 15 seconds The door size is 1.7m x 1.6mH, and the ceiling height inside the refrigerator is 15mH. The amount of ventilation per second from the unit door area is 1.28m³/ secm²v = 1.28m³/ secm²× 1.7m × 1.6m × 15 seconds = 52.2m³/ Times Assuming that the door is opened and closed 100 times a day, the defrost interval N is N = 5272m³÷ (52.2m³× 100 times / day) = 1.0 Therefore, defrosting is required once a day.

【0035】

(C) Top-in top-out method (automatic freezing and refrigerating warehouse according to the present invention) One door opening and closing time is 15 seconds The door size is 1.7m x 1.6mH, and the ceiling height inside the refrigerator is 15mH. The amount of ventilation per second from the unit door area is 0.468m³/ secm²v = 0.468m³/ secm²× 1.7m × 1.6m × 15 seconds = 19.9m³/ Times Assuming that the door is opened and closed 100 times a day, the defrost interval N is N = 5272m³÷ (19.9m³× 100 times / day) = 2.6 Therefore, defrosting is required once every 2.6 days.

【0036】

From the above results, in the case of the automatic freezing and refrigerating warehouse of the upper-in / upper-out method according to the present invention, the number of defrosts can be reduced as compared with other methods. It should be noted that FIG. 4 is a diagram showing the amount of cold air outflow per unit area per unit time due to the difference in the height from the ceiling surface in the refrigerator to the center of the door and the temperature in the refrigerator.

【0037】

[Examination of heat load due to ventilation] As shown in the examination of the number of defrosts, the outflow of cold air from the heat shield door in each method greatly affected the number of defrosts. Furthermore, the outflow of cold air, that is, the intrusion of outside air, also affects the heat load. Calculate the heat load of each method (A), (B), and (C) under the same conditions as in the above examination of the number of defrosts.

【0038】

(A) Forklift type Outside air intrusion amount V = 32.8m³/ Time x 200 times / day x 1/24 = 273.3m³/ H Assuming that the internal temperature is -30 ° C and the external temperature is + 30 ° C (relative humidity 60%), the heat load Qkal / H due to the intrusion of outside air is Q = V × 1 / Ya × (Δikal / kg) = 273.3m³/ H × (1 ÷ 0.881m³/ kg) × {17kal / kg-(-7.1kal / kg)} = 7476kal / H [0039]

(B) Bottom-in / bottom-out method (general automatic freezing / refrigerating warehouse) Outside air intrusion amount V = 52.2m³/ Time x 100 times / day x 1/24 = 217.5m³/ H Q = 217.5m³/ H × (1 ÷ 0.881m³/ kg) × {17kal / kg-(-7.1kal / kg)} = 5950kal / H [0040]

(C) Top-in top-out method (automatic freezing and refrigerating warehouse according to the present invention) Outside air intrusion amount V = 19.9m³/ Time x 100 times / day x 1/24 = 82.9m³/ H Q = 82.9m³/ H × (1 ÷ 0.881m³/ kg) × {17kal / kg-(-7.1kal / kg)} = 2268kal / H [0041]

Based on the above results, the heat load due to ventilation from the heat shield door is (C) top-in top-out method (automatic freezing and refrigerating warehouse according to the present invention) is (A) forklift type, (B) bottom-in bottom-out method It can be seen that the amount is 30% and 38%, respectively, for (general automatic freezing and refrigerating warehouse). FIG. 5 is a diagram showing a comparative example based on the temperature inside the refrigerator in each method.

【0042】

In the freezing and refrigerating warehouse, the temperature inside the warehouse is not a little uneven. This temperature unevenness may occur locally around the heat generating part (lighting, heater, motor), around the door, around the product, etc., or may occur due to the height difference in the refrigerator. In order to reduce this temperature unevenness, the air inside the refrigerator is circulated by a fan or the like so that it becomes uniform through a duct or the like.

【0043】

The cold air circulation generally doubles as a cooler fan, and the air volume at that time is 40 m.³It is said to be / minRT. Converting this to temperature difference 40m³/ min × 60 × Ykg / m³× (i1-i2) = 3320kcal / H Assuming that the temperature inside the refrigerator is -30 ° C, Specific weight Y = 1.45kg / m³Suction air enthalpy i1 = -7.073kcal / kg Therefore, i2 = -8.027kcal / kg This corresponds to air at -34 ° C. The temperature difference at that time is -30- (-34) = 4 ° C, and temperature unevenness of at least about 4 ° C occurs.

【0044】

In the case of a large freezer / refrigerator, the cooler is a floor-standing type, and "the circulation of cold air is a lower suction / upper blow type", and a duct is generally provided on the blow side so that the entire structure is uniform. In this method, the cool air with the lowest temperature due to the temperature unevenness caused by the height difference between the upper and lower sides is sucked in and cooled by the cooler. In this case, the evaporation temperature TE of the cooler is, for example, the suction temperature -30 ° C and the difference ΔT = 10 ° C from the evaporation temperature. TE = -30 ° C-10 ° C = -40 ° C Is.

【0045】

On the other hand, in the case of the upper suction / lower blow according to the present invention, the highest cold air generated by the temperature unevenness is sucked and cooled by the cooler. Assuming that the evaporation temperature TE of the cooler in this case is a temperature unevenness of 4 ° C, TE = (-30 ° C + 4 ° C) -10 ° C = -36 ° C Is. This difference in evaporation temperature greatly affects the coefficient of performance of the refrigerator.

【0046】

FIG. 6 is a diagram showing the relationship between the evaporation temperature of the refrigerator and the coefficient of performance. From the figure TE = -40 ° C Coefficient of performance = 1.66 TE = -36 ° C Coefficient of performance = 1.80 The ratio is 1.8 / 1.66 = 1.084. That is, the upper suction / lower blowing method of the present invention has a higher freezing efficiency of 8.4% than the general lower suction / upper blowing method. This means that the running cost can be reduced in the freezing and refrigerating warehouse of the present invention. This ratio further increases as the temperature inside the refrigerator increases and the temperature unevenness increases.

【0047】

By making the freezing and refrigerating warehouse upper suction and lower blowout as described above, the following things will be affected in addition to the above. (a) No need for forced circulation of cold air. Since the above-mentioned cold air having a relatively high temperature is sucked and the cooled air flows from the lower part, the air flow for eliminating the temperature unevenness naturally occurs. Therefore, forced circulation becomes unnecessary.

【0048】

(b) The outlet duct is no longer required. Since the air flow occurs naturally as described above, the outlet duct becomes unnecessary. Therefore, the installation space of the outlet duct provided in the upper part of the refrigerator is not required, and the space in the refrigerator can be effectively used.

【0049】

(c) The capacity of the cooler fan can be reduced. Since the blow duct is not required as described above, it is not necessary to expect the static pressure of the resistance due to the duct. Therefore, the cooler fan needs only the fan capacity required for the cooler, and the fan can be miniaturized.

【0050】

In the above example, the cooling air suction port 33 provided on the upper side of the warehouse body 10 and the cooling air blowing port 32 on the lower side are provided, but the cooling air suction port 33 is on the upper side of the warehouse body 10. It is not limited to the department. Further, the cooling air inlet 32 is not limited to the side portion as long as it is the lower part of the warehouse body 10.

【0051】

[Effect of the invention]

As described above, according to the invention described in each claim, the following excellent effects can be obtained.

【0052】

According to the invention of claim 1, since the load is carried in and out from the upper part of the warehouse body through the warehouse body carry-out entrance provided on the upper side part of the warehouse body, the warehouse body carry-out provided on the upper side part of the warehouse body is carried out. The air discharged from the inlet when loading and unloading is higher in temperature and lighter in specific gravity than in the lower part of the warehouse body, and the heavy air with lower temperature and specific gravity is provided in the lower part of the warehouse body as in the past. A large amount of cargo does not flow out from the loading / unloading port, and the temperature inside the warehouse can be maintained at a predetermined temperature with a small amount of energy consumption.

【0053】

According to the second aspect of the invention, the cargo is raised to the warehouse main body loading / unloading entrance through the elevating mechanism provided in the front room carried into the loading / unloading chamber through the loading / unloading port, and is carried into the warehouse main body from the warehouse main body loading / unloading entrance. Then, the cargo carried out from the warehouse body passes through the warehouse body carry-out entrance, descends in the front room by an elevating mechanism, and is carried out through the load-in / out room. It is possible to minimize the amount of cooling air that flows out when the opening / closing doors provided at each of the warehouse main body loading / unloading ports are opened / closed.

【0054】

According to the invention of claim 3, as described above, the cooling air from the cooler is blown into the lower part of the warehouse body through the cooling air inlet, and the heated cooling air is blown from the upper part of the warehouse body through the cooling air suction port. By sucking into the cooler, air with a low temperature is piled up from the bottom, so that the cooling efficiency of the cooler is greatly improved.

【0055】

According to the invention of claim 4, the load is carried in and out from the upper part of the warehouse body through the inlet / outlet of the warehouse body, and the cooling air from the cooler is blown into the lower part of the warehouse body through the cooling air inlet to raise the temperature. Since the rising cooling air is sucked into the cooler from the upper part of the warehouse body through the cooling air suction port, the effect of the invention according to claim 2 is added to the effect of the invention according to claim 1, and the load is carried in and out. As a result, the amount of cooling air flowing out is small and the cooling efficiency is improved. As a result, it is possible to provide an automatic freezing and refrigerating warehouse that can significantly save energy.

[Simple explanation of drawings]

[Figure 1]

It is a top view which shows the structural example of the automatic freezing and refrigerating warehouse which concerns on this invention.

[Figure 2]

It is the AA arrow sectional view of FIG.

[Fig. 3]

It is a cross-sectional view taken along the line BB in FIG.

[Fig. 4]

It is a figure which shows the amount of cold air outflow per unit area per unit time due to the difference between the height from the ceiling surface in the refrigerator to the center of the door, and the temperature in the refrigerator.

[Fig. 5]

It is a figure which shows the comparative example of the heat load by the temperature in the refrigerator in each method.

[Fig. 6]

It is a figure which shows the relationship between the evaporation temperature of a refrigerator and the coefficient of performance.

[Explanation of symbols]

10 Warehouse body 11 Ceiling 12 side wall 13 floors 14 Cargo storage 15 shelves 16 Ceiling running Claire 17 Stacker Crane 18 Travel rail 20 Open / close door 21 Warehouse body carry-out entrance 22 Front room 23 Loading / unloading room 24 Open / close door 25 Front room carry-out entrance 26 Opening and closing door 27 Loading / unloading entrance 28 Carry-in / out conveyor 29 conveyor 30 carriage 31 cooler 32 Cooling air inlet 33 Cooling air suction port 34 cooler 35 suction duct