JP3126354B1 - Cooling unit - Google Patents

Abstract

The present invention relates to a cooling unit that uses a flat box fan as a blower, rationally arranges components of a refrigeration cycle, and achieves compactness. SOLUTION: An inlet 6 and an outlet 7 for guiding the circulation of cold air into a refrigerator are arranged in a unit substrate 5, and an evaporator 8 and its box fan 9 are connected between the inlet and the outlet. A condenser 10 is arranged side by side with respect to the outlet, orthogonal to the longitudinal direction of the evaporator on the side of the evaporator, and an electric compressor 11 is arranged in parallel with the condenser. A condenser box fan 12 is detachably attached from above to a condenser and an electric compressor. The evaporator has a heat-insulating molded product having a projecting portion having a larger diameter at a tip portion than a base portion and a long jetty. The cooling unit 4 is configured to be insulated from the outside air temperature by a heat insulating box formed by coupling with a heat insulating molded product 17 having a concave groove 17a in which the convex ridge portion is closely fitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention resides in a storage for storing rice and other agricultural products and controlling the temperature and humidity in the storage so that the taste is not deteriorated, or in a storage for controlling temperature and humidity. It relates to a cooling unit to be used.

[0002]

2. Description of the Related Art Insulated structural storage for storing rice generally used by farmers and the like so as not to deteriorate the taste,
The size of the main body is such that brown rice bags of about 30 kg containing brown rice can be arranged in two rows and stacked in several stages so that they can be installed in a corner such as a barn of a farmhouse. On the other hand, because of such a storage main body, the temperature in the storage is 10 ° C.
The cooling unit that keeps the temperature at about 15 ° C. and the humidity at about 60% to 70% is generally installed on the upper surface outside the storage main body while respecting the storage space in the storage. In consideration of the above, the cooling unit is separately housed in the storage of the storage main body, delivered to the user together with the storage main body, and subsequently taken out and installed on the outer upper surface of the storage main body.

As shown in FIG. 9, such a conventional cooling unit includes a rectangular unit substrate 40 installed on the upper surface of a storage body, and a cold air inlet 41 provided at one end of the unit substrate and a blow-off port. An evaporator 43 is disposed between the ports 42, and an evaporator blower 44 is disposed between the evaporator 43 and the outlet 42, and the blower 42 is disposed on the unit substrate 40 opposite to the one end. A condenser 45 is disposed laterally and orthogonal to the longitudinal direction of the evaporator 43,
A vertical electric compressor 46 is arranged on the side of the outlet 42 in parallel with the longitudinal direction of the condenser 45, and a condenser blower 47 is arranged between the condenser 45 and the electric compressor 46. ing. Further, on the unit substrate 40, a capillary tube 49 and a dryer 50 are disposed outside the electric compressor 46 and the condenser blower 47 between the electric box 48, the electric compressor 46 and the condenser blower 47 and the outlet 42. I have. And the evaporator blower 44 and the condenser blower 47
A fan 52 is attached to a rotating shaft of a motor 51, has a long axial dimension, and is directly screwed with a screwdriver or the like from a lateral direction, which is a surface of the evaporator 43 or the condenser 45, through which air flows. Evaporator 43 and condenser 45
It is attached to.

Further, the evaporator 43 is provided with a plurality of screws to attach a dew tray 54 to the unit substrate 40 via a lower heat insulator 53, and fixed vertically to the fixed dew tray 54 with a plurality of screws. Further, a container-shaped upper heat insulator (not shown) having a size surrounding the area including the suction port 41 and the outlet port 42 is placed on the evaporator 43 and a concave groove 53a having the same width from the entrance to the bottom of the lower heat insulator 53. Then, a convex portion (not shown) of the same width is fitted from the base portion to the tip portion of the upper heat insulator, and a sealing tape is attached to the joint facing the outer peripheral surface. Finally, the cover is put on the upper and lower heat insulators. To be attached to the unit substrate 40.

[0005]

Therefore, since the cooling unit has to be installed on the outer surface of the tall storage body as described above, the cooling unit is easy to handle during packing and installation during transportation, and Easy maintenance was required.

However, in the conventional example described above, both the evaporator blower 44 and the condenser blower 47 are provided with the evaporator 4.
3. Since the condenser 45 is attached and detached by screws from the lateral direction and a blower having a long axial dimension (thickness) is used, the space for the attachment / detachment work and the unit substrate of each blower 5 required a large installation area, resulting in a relatively large cooling unit. Also, the installation of the evaporator 43 including the assembly of the upper and lower heat insulators was very troublesome, such as tightening a large number of screws and attaching a tape for sealing.

Accordingly, the present invention provides a cooling unit having a small mounting area, a compact size, easy attachment / detachment operation, easy disassembly for assembling and repair, and an evaporation component which is a component of the cooling unit. It is another object of the present invention to provide a container having good heat insulation and having heat insulating means that is easy to assemble and disassemble.

[0008]

In order to solve the above-mentioned conventional problems, the present invention has a unit substrate, and the unit substrate has a cool air inlet and a cool air outlet for circulating cool air in an agricultural product storage. In parallel, the longitudinal direction of both the evaporator and the evaporator box fan is arranged in parallel with the cold air inlet and the cold air outlet between the cold air inlet and the cold air outlet, A condenser is arranged on the side of the evaporator and orthogonal to the longitudinal direction of the evaporator, and an electric compressor is arranged in parallel with the longitudinal direction of the condenser, and the condenser and the electric compressor are And a box fan for the condenser is detachably mounted from above along the longitudinal direction of the condenser, and an electric box is disposed orthogonally to a side of the electric compressor and the condenser, and the electric compression Between the machine and the cool air outlet. The ears are arranged in series, and the evaporator has a heat-insulating molded product having a protruding ridge having a larger diameter at a tip portion than a base portion and having a long ridge shape, and a concave groove in which the ridge is closely fitted. This is a cooling unit configured to insulate against the outside air temperature by using an insulating box configured by coupling with a heat-insulated molded product.

According to the above means, the evaporator and the condenser both use a flat box fan to reduce the installation area on the unit substrate. In particular, the box fan for the condenser can be attached and detached from above the condenser. In consideration of only the space for the size of the box fan, it is possible to install the condenser close to the electric compressor, making it possible to make the whole compact and easy to install and remove the box fan for the condenser In addition, the joining portions of a plurality of heat-insulated molded products constituting the heat-insulating box are closely fitted, and assembling / disassembling is easy, and heat-insulating performance can be improved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention has a unit substrate, and the unit substrate has a parallel arrangement of a cool air inlet and a cool air outlet for circulating cool air in an agricultural product storage. The evaporator and the box fan for the evaporator are disposed between the cool air inlet and the cool air outlet, and the longitudinal direction of each of the evaporator and the evaporator box fan is arranged in parallel to the cool air inlet and the cool air outlet. A condenser is arranged laterally and orthogonal to the longitudinal direction of the evaporator, and an electric compressor is arranged in parallel with the longitudinal direction of the condenser, between the condenser and the electric compressor. A box fan for the condenser is detachably mounted from above along the longitudinal direction of the condenser, and an electrical box is arranged orthogonally to the side of the electric compressor and the condenser. Connect the capillary tube and dryer in series between the outlets. The evaporator is provided with a heat-insulating molded product having a convex ridge portion having a larger diameter at the tip portion than the base portion and having a long ridge shape, and a heat-insulating molded product having a concave groove in which the convex ridge portion is closely fitted. This is a cooling unit that is configured to insulate against the outside air temperature by a heat insulating box configured by combining the above.

In the above embodiment, the cooling unit is located at one end of the unit substrate between the cool air inlet and the cool air outlet, and the evaporator is connected to the cool air inlet and the cool air outlet through an air flow passage. And a box fan for the evaporator. In addition, an electric compressor and a condenser are arranged in parallel on the unit substrate on the side opposite to one end side and perpendicular to the longitudinal direction of the evaporator. The condenser is located between the electric compressor and the condenser. A detachable box fan is detachably mounted from above the condenser. Further, an electric box is provided outside the electric compressor and the condenser, and a capillary tube and a dryer are provided on the unit substrate between the electric compressor and the box fan for the evaporator. Therefore, the condenser and the evaporator use a flat box fan, and the installation and removal of the condenser box fan are performed from above the condenser.
It is possible to arrange such that the installation area of the components of the refrigeration cycle on the unit substrate is as small as possible. Also,
The two heat-insulated molded products have tight ridges fitted into the concave grooves, so that there is no leakage of cold air from the junction of the two heat-insulated molded products as an insulating box that covers the evaporator and is easy to assemble. If the two heat-insulated molded products are strongly separated from each other, the protruding ridges come out of the concave grooves, so that disassembly becomes possible.

According to a second aspect of the present invention, in the first aspect, the evaporator is a cooling unit disposed on a dew tray installed in one of the heat-insulated molded products.

In the above embodiment, the above-mentioned claim 1 is provided.
As described above, the same operation as that of the embodiment of the present invention can be obtained, and the evaporator is located on the exposure tray installed in the heat-insulated molded product, so that the cooling unit can be made more compact.

According to a third aspect of the present invention, there is provided the heat-insulating molded product having the concave groove according to the first or second aspect, wherein the cold-air inlet and the cold-air outlet and the cold-air inlet and the cold-air outlet are provided. A mounting recess is formed in the mounting recess, a dew tray is fitted in the mounting recess, and a bottom plate is fitted in a supporting portion provided on the inner bottom of the dew tray, and the evaporator is provided in an upright state, and the evaporator and the cold air are sucked. The mouth and the cool air outlet are covered with a heat-insulated molded product having a convex portion, and the evaporator is pressed down, and a pair of internal ribs provided on the left and right sides of the inside of the upper heat-insulated molded product are respectively provided on the left and right side plates of the evaporator. This is a cooling unit that fits and clamps, and further covers the upper and lower heat-insulated molded products, and attaches to the unit substrate to hold down the heat-insulated molded products.

In the above embodiment, the dew tray is fitted and mounted in the mounting recess of the unit substrate, and the evaporator has its bottom plate fitted to the inner bottom support of the dew tray fitted to the lower heat-insulating molded product. The evaporator is covered with an upper heat-insulating molded product to be joined to the lower heat-insulating molded product, and is pressed down from above. A cover that covers the upper and lower insulation molded products is attached to the unit board, and the upper insulation molded product is held down by the cover. .

According to a fourth aspect of the present invention, in the second or third aspect, a pair of flanges are provided on the outer periphery of the drainage pipe of the dew tray, and the outer circumference of the drainage pipe located between the flanges is provided. While wrapping the airtight sealing material around the surface,
This is a cooling unit in which upper and lower heat-insulating molded products are brought into contact with and joined to a drain pipe, a flange, and a hermetic sealing material of the dew tray.

In the above embodiment, a zigzag flow path is formed by a pair of flanges on the contact surface between the upper and lower heat-insulating molded products covering the dew tray and the evaporator and the drainage pipe, and the drainage pipe between the pair of flanges is formed. Since the airtight sealing material is present on the outer peripheral surface, the flow resistance is increased, and it is possible to prevent the leakage of cool air from the evaporator side to the outside through the contact surface.

According to a fifth aspect of the present invention, in the first aspect, a condenser is provided near the electric compressor, and the condenser is located between the electric compressor and the condenser. A condenser box fan is mounted with a fixture A and a fixture B. The fixture A is provided on the condenser and supports, from below, a lower portion of a frame of the condenser box fan which is lower than above, and holds and holds the condenser. To stop,
The attachment B is a cooling unit configured to be detachably attached to the upper end of the condenser from above, to clamp and lock the upper part of the frame of the box fan for the condenser, and to further press the holding unit.

In the above embodiment, the frame of the box fan for the condenser, which has been lowered from above the condenser, is clamped and locked by the fixture A mounted on the condenser, and also temporarily supported by being supported from below. . Next, the fixture B is detachably attached to the rear upper edge of the condenser from above, and the fixture B holds and locks the upper part of the frame of the box fan for the condenser and presses the box from above to hold the box. A fan is to be installed. Therefore, a flat box fan can be mounted and removed from above the condenser, and the condenser can be brought close to the electric compressor while leaving a space corresponding to the size of the box fan, so that the unit substrate is made compact.

The invention described in claim 6 is the first invention.
6. The cooling unit according to claim 5, wherein the unit substrate is formed in a rectangular shape, and is provided with a mounting portion which is formed by folding two opposing long outer peripheral edges into a flat double shape for carrying. It is.

In the above embodiment, the mounting portion of the unit substrate in the cooling unit has a structure in which the outer peripheral edge is folded back to be doubled, and since there is no burr unlike the conventional case, handling with the mounting portion is safe. At the same time, it is possible to make the installation with a robust structure firm and secure.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cooling unit of the present invention and a storage provided with the cooling unit will be described below with reference to FIGS. FIG. 2 is a perspective view showing a storage employing the cooling unit according to an embodiment of the present invention, FIG. 2 is a top view showing a state where a cover of the cooling unit is removed, and FIG. 3 is an enlarged perspective view of a main part of a unit substrate of the cooling unit. FIG. 4 is a perspective view showing an attached state of the condenser box fan in the cooling unit, and FIG. 5 is an exploded perspective view showing a part of the attached state of the condenser box fan.

Reference numeral 1 denotes a storage main body having a heat-insulating structure for storing rice and other agricultural products and for controlling the temperature and humidity in the storage so that the taste is not deteriorated. It is set to a size that allows it to be stacked step by step, and the brown rice bag 2 can be taken in and out by opening and closing the door 3. 4 is a cooling unit of the present invention installed on the outer upper surface of the storage main body 1, and circulates cool air in the storage of the storage main body 1.
The temperature is about 10 ° C to 15 ° C and the humidity is 60% to 70%
To keep to the extent.

The cooling unit 4 has a unit substrate 5 made of a rectangular metal, and has a mounting portion 5a which is fixed to the outer upper surface of the storage main body 1 with screws. The cooling unit 4 is made compact by arranging the cooling components constituting the well-known refrigeration cycle on the unit substrate 5, selecting a specific blower and mounting the same.

That is, the unit substrate 5 is provided with a cool air inlet 6 and a cool air outlet 7 for guiding cool air circulation inside the storage body 1 in parallel on the upper surface at one end side in the longitudinal direction. An evaporator 8 is provided between the port 6 and the cool air outlet 7, and two evaporator box fans 9 are provided in parallel between the cool air outlet 7 and the evaporator 8. It is arranged in parallel with the mouth 7.

The unit substrate 5 is provided on the upper surface of the end opposite to the one end in the longitudinal direction, beside the evaporator 8.
And, a condenser 10 is disposed orthogonal to the longitudinal direction of the evaporator 8, and a vertical electric compressor 11 installed vertically in parallel with the longitudinal direction of the condenser 10 is disposed. A condenser box fan 12 is removably attached to the condenser 10 from above in parallel between the compressor and the electric compressor 11 along the longitudinal direction of the condenser 10.

Further, the unit substrate 5 is located outside the electric compressor 11 and the condenser 10 on the upper surface thereof.
Are arranged orthogonally, and a capillary tube 14 and a dryer 15 are arranged in series between the electric compressor 11 and the cool air outlet 7.

Such a cooling unit 4 comprises an evaporator 8,
Since the condenser 10, the electric compressor 11, and the like are installed, the weight becomes considerably large, and it is necessary to make the handling during installation and the like safe and robust.

In view of this, the metal unit board 5 as the mounting board has a double (goby fold) configuration in which the mounting portion 5a is horizontally folded upward at the two long outer edges 5c facing each other. The end face 5b is brought close to the outer peripheral face 5c of the unit substrate 5, and a groove 5d is fitted between the outer peripheral face 5c and the end face 5b to which an end of a cover described later fits.
Is composed. On the other hand, the unit substrate 5 does not have a mounting portion on the shorter outer peripheral edge 5e facing each other, and the end surface 5f is directly processed downward.

As shown in FIG. 6, the evaporator 8 and the cool air inlet 6 and the cool air outlet 7 have a protruding ridge 16a having a larger diameter at the tip end than the base portion and a long ridge shape, and a polystyrene foam. Alternatively, the concave groove 1 in which the upper heat-insulating molded product 16 formed of a closed-cell foam and the convex ridge 16a are closely fitted.
7a, which is covered with a heat insulating box formed by coupling with a lower heat insulating molded product 17 formed of a polystyrene foam or a closed cell foam to be insulated from the outside air. Therefore, the unit substrate 5 is mounted on the upper surface of the storage main body 1 with screws, and the cooling unit 4 is mounted as shown in FIG.
6, the evaporator 8 including the cool air inlet 6 and the cool air outlet 7 located on both sides of the evaporator 8 is isolated from the outside air as shown in FIG. (Not shown), the cold air inlet 6 and the cold air outlet 7 communicate with the inside of the refrigerator, and as shown by the arrow, the box fan 9 for the evaporator.
The cool air that has exchanged heat with the evaporator 8 is circulated in the refrigerator by the action of (1).

Numeral 18 is located below the evaporator 8 and
This is a dew tray integrally having a drain pipe 19 for receiving and draining water generated by defrosting. Reference numeral 20 denotes a metal rectangular parallelepiped cover for covering the evaporator 8, the condenser 10, the electric compressor 11 and the like on the unit substrate 5, and two opposing sides are detachably attached to the left and right outer peripheral edges 5e of the unit substrate 5 with screws. The other two sides are fitted at their ends into the grooves 5d of the mounting portions 5a of the unit substrate 5.

The condenser box fan 12 employs a box fan to reduce the width between the mounting portions 5a of the unit substrate 5 and to make the cooling unit 4 compact. Even if it is installed in the vicinity, the condenser 10 is detachably attached to the condenser 10 without any hindrance by the vertically mounted electric compressor 11 including after-service. In other words, two condenser box fans 12 are arranged side by side and attached by the fixture A21 and the fixture B22. The box fan 12 for condenser and the box fan 9 for evaporator are flat motors with a fan. A motor 24 is formed around the motor 23, and a fan 24 is formed around the motor 23. The frame 25 is enclosed and the frame 25 is attached, so that the whole is flat and the motor 23 does not protrude from the front and rear frame 25.

The mounting member A21 is formed in a frame shape from a metal plate, and its outer peripheral portion is fitted to the outer periphery of the condenser 10 and fixed by screws, and is opposed to the plane of the condenser 10 through which fluid passes. Two openings 21a are provided side by side so that the condenser box fan 12 faces. In addition, mounting fixture A21
Is the box fan 12 for the condenser at the lower edge of the opening 21a.
The supporting portion 21b for supporting the rear frame 25, and the holding portion 21c for holding the rear frame 25 of the condenser box fan 12 at the lower corner of the opening 21a and for shifting the vertical and front and rear directions for locking. , 21d are further integrated at upper corners of the opening 21a with a frame 19 at the rear of the condenser box fan 12 by a frame B of a fixture B22, which will be described later, and a retaining portion 21e for locking is integrally formed. Has formed.

The mounting member B22 has a stepped side cross section to be joined and mounted on the entire rear upper end portion of the condenser 10, and is formed of a metal plate in accordance with the length of the condenser 10, and has left and right ends and a center. In this portion, four holding portions 22a for holding and locking the frame 25 at the rear of the condenser box fan 12 with the holding portion 21e at the rear of the fixture A21 are integrally formed. The attachment B22 is attached to and detached from the upper end of the rear of the condenser 10 by operating a screw 26 with a tool from the upper surface side of the condenser 10 and pressing down the frame 25 of the condenser box fan 12 from above by the pressing portion 22c. Further, the projecting piece 22b integrally projecting with the holding portions 22a on both sides is attached to the fixture A.
The holes 21f are locked in the holes 21f to ensure the attachment.

In the above configuration, the condenser box fan 12 is mounted on the condenser 10 as follows. That is, the condenser 10 in which the fixture A21 is previously fitted to the rear outer peripheral edge of the condenser 10 and is screwed and placed is used as the electric compressor 1
1 on the unit substrate 5. And, between the holding part 21c and the holding part 21d at the front and rear below the opening part 21a of the fixture A21 in the condenser 10,
The box fan 12 for the condenser is lowered from the upper side of the condenser 10, and the frame 25 at the rear thereof is fitted and locked, and is temporarily fixed by being brought into contact with the support portion 21b.

Subsequently, the fixture B22 is lowered toward the lower part of the condenser 10 while the holding portion 22a of the fixture B22 is applied to the upper portion of the rear frame 25 of the condenser box fan 12, and the projection 22b is formed in the hole 21f. And the whole of the fixture B22 is joined to the rear upper edge of the condenser 10, and the upper portion of the rear frame 25 of the condenser box fan 12 is clamped by the clamping portion 21e and the clamping portion 22a.
At the same time, it is locked and held by the holding portion 22c from above, and finally the screw 26 is passed through the fixture B22 from above and tightened to the condenser 10 to complete the installation of the condenser box fan 12.

Generally, the condenser 10 is preferably installed adjacent to the electric compressor 11 in view of the function of the refrigeration cycle, and the flow of fluid generated by the condenser box fan 12 which promotes the heat radiation action of the condenser 10 is electrically driven. When it is generated near the compressor 11 and used for promoting heat radiation, it tends to be installed as close as possible to the electric compressor 11. However, in the conventional installation of the blower to the condenser, the screwdriver was directly attached to the condenser by holding the tool from the electric compressor side (from the side) and tightening the screw. It was necessary to secure a space for the operation between the electric compressor 11 and the condenser 10. Therefore, the width of the unit substrate 5 on which these are installed is large, and the entire cooling unit 4 is relatively large.

In the present embodiment, however, a box fan is employed, and the fixture A21 is attached to the condenser 10 and placed.
Between the holding portion 21c and the holding portion 21d, the condenser box fan 12 is lowered from above the condenser 8, the frame 25 is fitted and locked, and is brought into contact with the support portion 21b. Stop it. Next, the fixture B22 is joined to the rear upper edge of the condenser 10 from above the condenser 10 so that the condenser 10
Is attached to the condenser 10 with screws 26 from above, and the holding portion 22a of the fixture B22 and the holding portion 2 of the fixture A21
1e, the upper part of the rear frame 25 of the condenser box fan 12 is sandwiched and locked, and is pressed from above by the pressing part 22c. The removal of the condenser box fan 12 is performed in the reverse order of the above.

Since the box fan 9 for the evaporator is used for the evaporator 8 as well as the condenser, the thickness of the fan coil unit is smaller than that of the conventional example, and the installation area on the unit substrate 5 is reduced. It becomes smaller in the longitudinal direction.

Accordingly, the adoption, installation and removal of the condenser box fan 12 are all performed from above the condenser 10, so that the space between the condenser 10 and the electric compressor 11 is condensed as shown in FIG. It suffices if there is only a dimension in the pressure direction of the device box fan 12, and the condenser 10 is moved closer to the electric compressor 11 than in the conventional example.
In addition, by adopting the evaporator box fan 9, the width and length of the unit substrate 5 can be made as small as possible to make the entire cooling unit 4 compact, and the material cost can be reduced and the cost can be reduced. it can. In addition,
According to the cooling unit 4 of the present embodiment, it was possible to make the cooling unit about 20% more compact than the cooling unit such as the conventional example previously manufactured by the applicant.

Further, since the condenser 10 can be installed on the unit substrate 5 in the vicinity of the electric compressor 11,
The heat radiation effect of the condenser box fan 12 is positively applied not only to the original condenser 10 but also to the electric compressor 11, so that the cooling efficiency can be influenced well.

The cooling unit 4 also leads to a reduction in weight due to the compactness of the unit substrate 5 and the saving of materials.
Even when the cooling unit 4 is packed and transported inside the storage main body 1, and when the cooling unit 4 is installed on the upper surface of the storage main body 1, it is easy to handle and extremely useful.
In addition, according to the cooling unit 4 of the present embodiment, about 10% of the cooling unit such as the conventional example manufactured by the applicant previously.
The weight was able to be reduced.

Further, since the cooling unit 4 includes the evaporator 8, the condenser 10, the electric compressor 11 and the like, the cooling unit 4 becomes heavy, and in order to make it easy to carry at the time of installation or the like, a conventional mounting board is used. Since the outer peripheral edge of the unit substrate 5 was subjected to deburring after cutting a certain metal unit substrate 5, the operation was extremely difficult.

In this embodiment, however, the cooling unit 4 is compact as described above to reduce the weight, and the mounting portion 5a of the metal unit substrate 5 is folded back to form a double goby fold. Since the end face 5f of the peripheral edge is directed downward, deburring processing is not required, and productivity can be improved. In addition, if the cooling unit 4 is carried with the mounting portion 5a, it can be handled safely. The handling can be further facilitated in combination with the weight reduction by downsizing the unit substrate 5 described above.

Further, since the cooling unit 4 is formed by folding the mounting portion 5a of the metal unit substrate 5 into a double goby, the structure of the unit substrate 5 can be made robust, and the cooling unit 4 can be mounted on the storage main body 1. Is strong and reliable, which is beneficial in preventing cold air leakage.

Further, since the cooling unit 4 has only two opposite sides of the unit substrate 5 because the mounting pieces 5a of the metal unit substrate 5 are folded back to form a double goby fold, Compared to the case where the entire periphery is goby-folded, the material is saved and the processing is more advantageous.

Further, in this embodiment, the evaporator 10 and the dew tray 18 are mounted on the unit substrate 5 by the following mounting structure without using screws, and the vicinity of the drain pipe 19 and the upper and lower heat insulating molded products 16 are mounted. The following structure is adopted in order to prevent the cold air from leaking from the joint portion of the. FIG. 6 is an enlarged sectional view of a main part of an evaporator part in an embodiment of the cooling unit of the present invention, FIG. 7 is an exploded perspective view of a dew tray part of the cooling unit, and FIG. It is a principal part expanded sectional view of a drainage pipe part.

Reference numeral 27 designates a lower heat-insulating molded product 17 located between the cool air inlet 6 and the cool air outlet 7, and
Is a receiving recess formed in the lower heat-insulated molded product 17 for receiving the drain pipe 19. The lower heat-insulated molded product 17 provided with the mounting recess 27 and the receiving portion 28 is provided on the outer peripheral surface of the upper heat-insulated molded product 16 with the ridge 1.
The unit substrate 5 is provided with a concave ridge portion 13a wider than the entrance width, which is press-fitted to the unit substrate 6a.

The dew tray 18 is provided integrally with a pair of stepped support portions 29 on the left and right sides of the inner bottom.
The hole of the bottom plate 8a is fitted to support the evaporator 8 upright. The upper heat-insulating molded product 16 has a protruding portion 16a having a larger diameter at the tip portion than the base portion and having a long ridge shape, which is fitted by press-fitting into the concave groove 17a of the lower heat insulator 17 and attached.
And is insulated from the outside air, and the upper plate 8b of the evaporator 8 is held down by the ceiling. Further, the upper heat-insulating molded product 16 has a pair of internal ribs 30 which are fitted to the left and right side plates 8c of the evaporator 8 from above and sandwich the evaporator 8 so as not to fall down. And a holding portion 31 for holding the drain pipe 19 from above.

The cover 20 covers the evaporator 8, the condenser 10, the electric compressor 11, the electric box 13, etc. on the unit substrate 5, and is screwed on the left and right sides of the unit substrate 5 where the ridge 5 b is located. The upper surface of the upper heat-insulating molded product 16 that is detachably mounted and covers the evaporator 10 is pressed by a ceiling.

Reference numeral 32 denotes a drain pipe 1 sandwiched between the receiving portion 28 of the lower heat-insulated molded product 17 and the pressing portion 31 of the upper heat-insulated molded product 16.
9, a pair of flanges integrally provided on the outer periphery of the drainage pipe 19 located between the flanges 32.
Is wound around. Reference numeral 34 denotes a groove formed in the receiving portion 28 of the lower heat-insulating molded product 17 and the pressing portion 31 of the upper heat-insulating molded product 16 facing the pair of flanges 32.

In the above configuration, the lower heat-insulated molded product 17 is press-fitted and attached to the ridges 5b on the left and right sides of the unit substrate 5. Then, the dew receiving tray 18 is mounted in the mounting recess 27 of the lower heat-insulating molded product 17, and the pair of flanges 32 of the drain pipe 19, on which the hermetic sealing material 33 is already wound, in the groove 34 of the receiving portion 28 of the lower heat-insulating molded product 17. Are fitted to each other, and the dew tray 18 is mounted in a predetermined position. Next, the left and right side plates 8c of the evaporator 8 to which the evaporator box fan 9 has already been integrally attached are aligned between the pair of left and right internal ribs 30 of the upper heat-insulated molded product 16 whose mouth is turned upside down. After fitting, the evaporator 8 is lowered into the upper heat-insulating molded product 16, and is lowered until the upper plate 8 b hits the ceiling, and the evaporator 8 is clamped and temporarily fixed by the pair of internal ribs 30. Subsequently, the upper heat-insulated molded product 16 containing the evaporator 8 is turned over, and the bottom plate 8 of the evaporator 8 is turned over.
a is fitted to a pair of support portions 29 located on the left and right sides of the inner bottom of the dew receiving tray 18 to bring the evaporator 8 upright,
The groove 34 of the holding portion 31 of the upper heat-insulated molded product 16 is
The protrusion 16a of the upper heat-insulated molded product 16 is press-fitted into the concave groove 17a of the lower heat-insulated molded product 17. Finally, the cover 20 is covered with the electric compressor 11 on the unit substrate 5, the condenser 10, and the evaporator 8 covered with the upper and lower heat-insulated molded products 16 and 17.
And the like, and covers 20 are detachably attached to the left and right sides of the unit substrate 5 having the ridges 5b with screws, and the upper surface of the upper heat-insulating molded product 16 covering the evaporator 8 is pressed by the ceiling. .

As described above, in the present embodiment, the lower heat-insulated molded product 17 is fitted and attached to the unit substrate 5 and the
Is fitted and mounted in the mounting recess 27 of the unit substrate 5,
The evaporator 8 is mounted by fitting its bottom plate 8a to a support portion 29 on the inner bottom of the exposure tray 18 fitted to the mounting recess 27 of the lower heat-insulating molded product 17, and further joining to the lower heat-insulating molded product 17. The evaporator 8 is pressed down from above by the upper heat-insulating molded product 16 covering the evaporator 8, and a pair of internal ribs 30 provided on the left and right inside the upper heat-insulating molded product 16 are respectively attached to the evaporator 8.
The upper and lower heat-insulating molded products 16 and 17 are fitted with and sandwiched by the left and right side plates 8c. Part 1
The cover 20 covering the upper and lower heat-insulating molded products 16 and 17 is attached to the unit substrate 5 and the upper heat-insulating molded product 16 is pressed by the cover 20, and the evaporator 10 is connected to the evaporator 10. The dew tray 11 is attached.

Therefore, the evaporator, in a screw-free manner,
The dew tray can be attached to the unit substrate 5, and it is extremely inexpensive and greatly easy to assemble and disassemble without the need to attach a sealing tape or the like to the outer peripheral surface of the joint between the upper and lower heat-insulating molded products 16, 17. Productivity can be increased.

Since the evaporator 8 is a compact fan coil unit having two flat evaporator box fans 12 arranged side by side, the upper and lower heat-insulating molded products 16 and 17 covering the unit are mounted on the unit substrate 5. The installation area is reduced, and the cooling unit 4 can be made compact.

In this embodiment, the evaporator 8 and the dew tray 1
8 and upper and lower heat insulation molded products 16 and 17 and drain pipe 1
9, a zigzag flow path is formed by a pair of flanges 32, and an airtight sealing material 33 is present on the outer peripheral surface of the drainage pipe between the pair of flanges 32. And the accuracy of preventing the cold air from leaking out of the upper and lower heat-insulated molded products 16 and 17 from the evaporator 8 side can be improved.

In the above embodiment, when the condenser box fan 12 is mounted on the condenser 10, the frame 25 on the rear side of the condenser box fan 12 is fixed to the holding portion 21e of the fixture A21 and the holding portion of the fixture B22. Although it is clamped and locked by 22a, it goes without saying that the clamp A may not be provided on the fixture A21 side by providing the clamp 21e of the fixture A21 on the fixture B22. Also,
In the above embodiment, when the evaporator 8 was mounted, the evaporator 8 was first housed in the upper heat-insulating molded product 16, but on the contrary, the evaporator 8 was fitted to the support portion 29 of the dew tray 18 and placed there. A method in which the molded product 16 is covered with the evaporator 8 may be used.

[0058]

As described above, the invention according to claim 1 of the present invention has a unit substrate, and the unit substrate has a cool air inlet and a cool air outlet for circulating cool air in the agricultural product storage. The evaporator and the box fan for the evaporator are disposed between the cool air inlet and the cool air outlet in a longitudinal direction in parallel with the cool air inlet and the cool air outlet, and the evaporator is provided. A condenser is disposed on the side of the condenser and orthogonal to the longitudinal direction of the evaporator, and an electric compressor is disposed in parallel with the longitudinal direction of the condenser. Along with the condenser, a box fan for the condenser is detachably attached from above along the longitudinal direction of the condenser, and an electric box is arranged orthogonally to the side of the electric compressor and the condenser,
A capillary tube and a dryer are arranged in series between the electric compressor and the cool air outlet, and the evaporator is a heat-insulated molded product having a protruding ridge portion having a larger diameter at a tip portion than a base portion and a long jetty. And a cooling unit configured to insulate against the outside air temperature by an insulating box formed by coupling a heat-insulating molded product having a concave groove in which the protruding ridge portion is closely fitted, and a flat box for a blower of an evaporator and a condenser. Use a fan to reduce the installation area on the unit board.Especially, the condenser box fan can be installed and removed from above the condenser. Can be installed and removed, the whole can be made compact, the installation and removal of the condenser box fan can be easily done, and the assembly of multiple insulation molded products that make up the insulation box Solution is easy, and the heat insulating performance of the joint portion of the insulating molding can be improved.

According to a second aspect of the present invention, in the first aspect, the evaporator is a cooling unit disposed on a dew tray installed in one of the heat-insulated molded products, and is installed in the heat-insulated molded product. Since the evaporator is located on the dew tray, the cooling unit can be made more compact.

According to a third aspect of the present invention, there is provided the heat insulating molded product having a concave groove according to the first or second aspect, wherein a cold air inlet and a cold air outlet and a cold air inlet and a cold air outlet are provided. To form mounting recesses respectively,
A dew tray is fitted into the mounting recess, a bottom plate is fitted to a support provided on the inner bottom of the dew tray, and an evaporator is provided in an upright state, and the evaporator and a cool air inlet and a cool air outlet are connected. Covering with a heat-insulating molded product having a convex portion, and holding down the evaporator, fitting and sandwiching a pair of internal ribs provided on the left and right inside of the upper heat-insulating molded product with the left and right side plates of the evaporator, In addition, a cooling unit that covers the upper and lower heat-insulated molded products and attaches it to the unit substrate and holds the heat-insulated molded products down.The evaporator and dew tray are not mounted using conventional screws, so they are inexpensive and greatly reduced. Productivity can be improved.

According to a fourth aspect of the present invention, in the second or third aspect, a pair of flanges are provided on the outer periphery of the drainage pipe of the dew tray, and the outer circumference of the drainage pipe located between the flanges is provided. While wrapping the airtight sealing material around the surface,
A cooling unit in which the upper and lower heat-insulated molded products are in contact with the drainage pipe, flange, and hermetic sealing material of the dew tray, and the overall flow resistance of the contact surface between the upper and lower heat-insulated molded products and the drainage pipe increases the sealing. Can be improved, and cold air leakage can be prevented.

According to a fifth aspect of the present invention, in the first aspect, a condenser is provided near the electric compressor and the condenser is located between the electric compressor and the condenser. A condenser box fan is mounted with a fixture A and a fixture B. The fixture A is provided on the condenser and supports, from below, a lower portion of a frame of the condenser box fan which is lower than above, and holds and holds the condenser. To stop,
The mounting unit B is a cooling unit configured to be detachably attached to the upper end of the condenser from above, to clamp and lock the upper part of the frame of the condenser box fan, and to further press the holding unit with a holding unit. The cooling unit including the unit substrate can be made compact and easy to handle, taking into account only the space corresponding to the size of the electric compressor, and it is easy to handle. The installation and removal of the condenser box fan can be facilitated.

The invention described in claim 6 is the first invention.
6. The cooling unit according to claim 5, wherein the unit substrate is formed in a rectangular shape, and a mounting portion is provided at the time of carrying which is formed by folding two opposing long outer peripheral edges into a flat double. In addition, since there is no burr as in the conventional case, handling with the mounting portion can be made safe, productivity can be increased, and the mounting can be made firm and reliable by the robust structure.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a storage employing a cooling unit according to an embodiment of the present invention.

FIG. 2 is a top view showing a state where a cover of the cooling unit is removed.

FIG. 3 is an enlarged perspective view of a main part of a unit substrate of the cooling unit.

FIG. 4 is a schematic perspective view showing an attached state of an evaporator box fan of the cooling unit.

FIG. 5 is an exploded perspective view of a part of an attached state of an evaporator box fan of the cooling unit.

FIG. 6 is an enlarged sectional view of a main part of an evaporator part of the cooling unit.

FIG. 7 is an exploded perspective view of a dew tray portion of the cooling unit.

FIG. 8 is an enlarged sectional view of a main part of a drain pipe portion of a dew tray of the cooling unit.

FIG. 9 is a top view showing a state where a cover of a cooling unit of a conventional example is removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage main body 4 Cooling unit 5 Unit board 5a Attachment part 5e Outer edge 5f End face 6 Cold air inlet 7 Cold air outlet 8 Evaporator 9 Box fan for evaporator 10 Condenser 11 Electric compressor 12 Condenser box fan 13 Electrical box 14 Capillary Tube 15 Dryer 16 Upper heat-insulated molded product (insulated box) 16a Convex ridge 17 Lower heat-insulated molded product (heat-insulated box) 18 Dew tray 19 Drain pipe 20 Cover 21 Fixture A 21a Opening 21b Support 21c, 21d, 21e Holding part 22 Fixture B 22a Holding section 22c Holding section 27 Mounting recess 30 Internal rib 32 Flange 33 Airtight sealing material

Claims (6)

(57) [Claims] 1. A unit substrate having a parallel arrangement of a cool air inlet and a cool air outlet for circulating cool air in an agricultural product storage, wherein the cool air inlet and the cool air outlet are connected to each other. Both the evaporator and the box fan for the evaporator are disposed with their longitudinal directions arranged in parallel to the cold air inlet and the cold air outlet, at the sides of the evaporator, and perpendicular to the longitudinal direction of the evaporator. A condenser is disposed, an electric compressor is disposed in parallel with the longitudinal direction of the condenser, and a box for the condenser is provided between the condenser and the electric compressor and along the longitudinal direction of the condenser. A fan is detachably mounted from above, an electrical box is arranged at right angles to the electric compressor and the condenser, and a capillary tube and a dryer are arranged in series between the electric compressor and the cool air outlet. The evaporator is located at the tip rather than the base. Insulation against the outside air temperature is achieved by an insulating box formed by joining a heat-insulating molded product having a large convex part having a large diameter and a ridge-like shape and a heat-insulating molded product having a concave groove in which the convex part closely fits. Cooling unit configured. 2. The cooling unit according to claim 1, wherein the evaporator is disposed on a dew tray installed in one of the heat-insulated molded products. 3. A heat-insulating molded product having a concave groove, a cooling air inlet and a cold air outlet, and a mounting recess between the cold air suction and the cold air outlet are formed, and a dew receiving tray is fitted into the mounting recess. An evaporator is provided in an upright state by fitting a bottom plate to a support portion provided on the inner bottom of the dew tray, and the evaporator and the cool air inlet and the cool air outlet are covered with a heat-insulating molded product having a convex portion, And while holding down the evaporator, a pair of internal ribs provided on the left and right inside of the upper heat-insulated molded product are fitted to and sandwiched by the left and right side plates of the evaporator, and a cover is put on the upper and lower heat-insulated molded products. 2. The heat insulating molded product is pressed down on the unit substrate by pressing.
Alternatively, the cooling unit according to claim 2. 4. A pair of flanges are provided on the outer periphery of a drain pipe of a dew tray, and a hermetic sealing material is wrapped around an outer peripheral surface of the drain pipe located between the flanges, and the upper and lower heat-insulated molded products are removed from the dew tray. The cooling unit according to claim 2, wherein the cooling unit is in contact with and joined to a drain pipe, a flange, and an airtight seal material. 5. A condenser is provided adjacent to the electric compressor, and a box fan for the condenser is mounted between the electric compressor and the condenser with the fixture A and the fixture B. The mounting fixture A is provided on the condenser and supports the lower part of the frame of the box fan for the condenser, which is lowered from above, from below, and is configured to be clamped and locked,
2. The cooling unit according to claim 1, wherein the attachment B is detachably attached to an upper end portion of the condenser from above to clamp and lock an upper portion of a frame of the box fan for the condenser, and further press down by a holding portion. . 6. The unit substrate according to claim 1, wherein the unit substrate is formed in a rectangular shape, and is provided with a mounting portion which is formed by folding two opposed long outer peripheral edges so as to be flat and double when carrying. The cooling unit according to claim 1.