JP2001241829A - Cooling unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling unit with high productivity by directly installing a dew reception pan and an evaporator on a unit substrate. SOLUTION: A mounting recessed portion 14 is formed in a lower heat insulation structure 13 provided on a unit substrate 5, to which recessed portion a dew reception pan 11 is fitted. An evaporator 10 is vertically provide by fitting a bottom plate 10a thereof to a support section 19 provided on an inner bottom of the dew reception pan. The evaporator is covered with an upper heat insulation structure 18 and is pressed with the same, and a pair of internal ribs 20 provided left and right in the upper heat insulation structure are fitted to and held between left and right side plates 10c of the evaporator. Further, the upper and lower heat insulation structures are covered with a cover 22 and are mounted on the unit substrate to press the upper heat insulation structure with the cover.

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 In general, storages used by farmers and the like store rice and maintain the temperature in the storage at 1 to prevent the taste from being lowered.
A cooling unit is mounted on the outer upper surface of the storage body to keep the temperature at about 0 ° C. to 15 ° C. and the humidity at about 60% to 70%. Then, the cooling unit mounts a dew tray with a plurality of screws via a lower heat insulator to a unit substrate mounted on the outer upper surface of the storage body, and fixes the evaporator to the fixed dew tray with a plurality of screws. It is provided vertically, furthermore, a container-shaped upper heat insulator is placed on the evaporator, the opening edge is joined to the lower heat insulator, and finally a cover is put on the upper and lower heat insulators and attached to the unit substrate.

Further, the cooling unit is designed to prevent dew condensation from occurring due to cold air leakage between a drain pipe of a dew receiving tray for receiving water generated by defrosting the evaporator and upper and lower heat insulators through which the pipe passes. In addition, a structure in which a sealing material is wound around the outer periphery of the drain pipe so as to penetrate the joint between the upper and lower heat insulators has been adopted.

[0004]

In the above-mentioned conventional cooling unit, since a large number of screws are used to install the evaporator on the unit substrate, a lower heat insulator and a dew tray are provided in the mounting holes of the unit substrate. Alignment of each mounting hole, screwing work to each mounting hole, and the same work must also be performed in mounting the evaporator to the dew tray, so that mounting workability is extremely poor, cost is high, And the productivity was low.

[0005] In addition, although the sealing material is wrapped around the outer periphery of the drain pipe in the sealing work of the drain pipe of the dew tray, the quality thereof varies due to the low precision of the prevention of cold air leakage, and the quality of the pipe falls below a certain level. Unnecessary sealing measures were applied to individual objects, resulting in low productivity.

The present invention has been made to solve the above-mentioned conventional problems, and enables a dew tray and an evaporator to be installed on a unit substrate without directly screwing the dew tray and an evaporator on a peripheral portion of a drain pipe of the dew tray. The purpose of the present invention is to provide a cooling unit with high productivity by preventing such problems.

[0007]

According to the present invention, in order to solve the above-mentioned conventional problems, a mounting recess is formed in a lower heat insulator provided by fitting to a unit substrate, and a dew tray is fitted into the mounting recess. At the same time, the bottom plate is fitted to the support provided on the inner bottom of the dew tray, and the evaporator is provided in an upright state. The evaporator is covered with a container-like upper heat insulator and pressed down. A cooling unit in which a pair of internal ribs provided on the left and right sides are fitted and sandwiched between left and right side plates of the evaporator, and a cover is attached to the upper and lower heat insulators and attached to the unit substrate to hold the upper heat insulator. .

[0008] According to the above means, since the evaporator and the dew tray are not mounted using screws, the production is greatly improved.

[0009]

According to the first aspect of the present invention, a mounting recess is formed in a lower heat insulator provided by fitting to a unit substrate, and a dew tray is fitted into the mounting recess.
A bottom plate is fitted to a support portion provided on the inner bottom of the dew receiving tray, and the evaporator is provided in an upright state. The evaporator is covered with a container-like upper heat insulator and pressed down, and at the left and right inside the upper heat insulator. A cooling unit comprising a pair of internal ribs provided fitted to and sandwiched between left and right side plates of the evaporator, and further covered with upper and lower heat insulators and attached to a unit substrate, and the upper heat insulator is pressed by the cover. is there.

In the above embodiment, the lower heat insulator is fitted and mounted on the unit substrate, the exposure tray is fitted and mounted in the mounting recess of the unit substrate, and the evaporator has its bottom plate fitted to the lower heat insulator. The evaporator is fitted and attached to the support portion on the inner bottom of the dew tray, and further covered with the upper heat insulator joined to the lower heat insulator, and pressed down from above, and a pair of each provided on the left and right inside the upper heat insulator. The inner ribs are fitted to and sandwiched between the left and right side plates of the evaporator, and furthermore, a cover for covering the upper and lower heat insulators is attached to the unit substrate and the upper insulator is pressed by the cover. The installation does not use screws.

According to a second aspect of the present invention, in the first aspect, a pair of flanges are provided on an outer periphery of a drain pipe of a dew tray supporting a lower portion of the evaporator, and the drainage located between the flanges is provided. While wrapping an airtight sealing material around the outer peripheral surface of the pipe, the upper and lower heat insulators are drain pipes of the dew tray,
This is a cooling unit formed by contacting and joining a flange and an airtight sealing material.

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 insulators covering the dew tray and the evaporator and the drain pipe, and the outer periphery of the drain pipe between the pair of flanges. Since the airtight sealing material is present on the surface, the flow resistance increases, and it is possible to prevent cold air from leaking from the evaporator side to the outside through the contact surface.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a cooling unit according to the present invention will be described below with reference to FIGS. FIG. 2 is a perspective view showing a storage employing the cooling unit according to the embodiment of the present invention, and FIG.
Is a top view showing the cooling unit with the cover removed,
FIG. 3 is an enlarged sectional view of a main part of an evaporator part of the cooling unit.
FIG. 4 is an enlarged sectional view of a main part of a dew tray portion of the cooling unit, and FIG. 5 is an exploded perspective view of a dew tray portion of the cooling unit.

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. A brown rice bag 2 of about 30 kg containing brown rice is arranged in two rows. 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 kept at about 10 ° C. to 15 ° C., and the humidity is kept at about 60% to 70%. The cooling unit 4 includes an electric compressor 6 which constitutes a well-known refrigeration cycle at one end in a longitudinal direction on a rectangular metal unit substrate 5 having a mounting portion 5a fixed to the outer upper surface of the storage main body 1 with screws. And a condenser 8 having a blower 7 for heat radiation in the vicinity thereof, and an evaporator 10 having a blower 9 for circulating cool air at an end opposite to the one end. 11 is the evaporator 1
This is a dew tray having an integrated drain pipe 12 for receiving and draining water generated by defrosting the evaporator at a position below 0, and formed in a rectangular shape.

The evaporator 10 and the dew tray 11 are mounted on the unit substrate 5 with the following mounting structure, and the following structure is used to prevent the leakage of cool air from near the drain pipe 12. . That is, reference numeral 13 denotes a lower heat insulator formed of a polystyrene foam or a closed-cell foam formed with a rectangular mounting recessed portion 14 into which the dew receiving tray 11 is fitted and a receiving portion 15 for receiving the drainage pipe 12.
The cold air inlet 16 and the cold air outlet 17 are integrally formed at positions on both sides of 0, and the concave ridge 13a is press-fitted to the convex ridge 18a of the upper heat insulator 18 on the outer periphery of the upper surface. The lower heat insulator 13 is press-fitted and attached to the ridges 5b on the left and right sides of the unit board 5 facing each other.
The dew tray 11 has a pair of stepped support portions 19 on the left and right sides of the inner bottom.
Are integrally provided, and the bottom plate 10 of the evaporator 10 is
The evaporator 10 is supported in an upright state by fitting the hole a.

The upper heat insulator 18 formed of a polystyrene foam or a closed-cell foam is mounted by fitting the convex ridge 18a into the concave ridge 13a of the lower heat insulator 13 by press-fitting.
Of the evaporator 10 and is held down by the ceiling. Further, the upper heat insulator 18 is provided with a pair of internal ribs 20 which are fitted to the left and right side plates 10c of the evaporator 10 from above and sandwich the evaporator 10 so as not to fall down. A holding portion 21 formed integrally and holding the drain pipe 12 from above is formed.

Reference numeral 22 denotes an electric compressor 6 on the unit substrate 5,
A metal cover that covers the condenser 8, the evaporator 10, etc., is detachably attached to the left and right sides of the unit substrate 5 where the ridges 5 b are located with screws, and an upper heat insulator 18 that covers the evaporator 10. Is held down by the ceiling. 23 is a lower heat insulator 13
A pair of flanges integrally provided on the outer periphery of the drain pipe 12 sandwiched between the receiving portion 15 and the holding portion 21 of the upper heat insulator 18, and an airtight sealing material is further provided on the outer periphery of the drain pipe 12 located between the flanges 23. 24 are wound. Reference numeral 25 denotes a groove formed in the receiving portion 15 of the lower heat insulator 13 and the pressing portion 21 of the upper heat insulator 18 opposed to the pair of flanges 23. The blowers 7 and 9 employ a flat motor with a fan, generally called a box fan. The fan is formed around the motor, and a fan is formed around the fan. Are enclosed and the frame is attached, so that the whole is flat and the motor does not protrude from the front and rear frames. By using such flat box fans 7 and 9, between the condenser 8 and the electric compressor 6,
Also, the space between the condenser 8 and the electric compressor 6 and the evaporator 10 which are arranged side by side perpendicularly to the longitudinal direction of the unit substrate 5 is reduced so that the cooling unit 4 can be made compact by downsizing the unit substrate 5. It is intended. The cooling unit 4 can be reduced in size by about 20% and reduced in weight by about 10% as compared with the conventional one manufactured by the applicant of the present invention.

In the above configuration, the lower heat insulator 13 is press-fitted and attached to the ridges 5b on the left and right sides of the unit substrate 5. The mounting recess 14 of the lower heat insulator 13
And a pair of flanges 23 of the drainage pipe 12 already wound with the airtight sealing material 25 are fitted into the grooves 24 of the receiving portion 15 of the lower heat insulator 13, and the dew tray 11 is placed at a predetermined position. Attach. Next, the left and right side plates 10c of the evaporator 10 to which the box fan 9 has already been integrally attached are fitted and fitted between a pair of left and right internal ribs 20 of the upper heat insulator 18 with the mouth turned upside down. Then, the evaporator 10 is lowered into the upper heat insulator 18, and is lowered until the upper plate 10 b hits the ceiling, and the evaporator 10 is temporarily fixed by being sandwiched between the pair of internal ribs 20. Subsequently, the upper heat insulator 18 containing the evaporator 10 is turned over, and the bottom plate 10a of the evaporator 10 is fitted to a pair of support portions 19 located on the left and right of the inner bottom of the dew tray 11, so that the evaporator 10 is in the upright state. At the same time, the groove 25 of the pressing portion 21 of the upper heat insulator 18 is fitted to the pair of flanges 23, and the convex ridge 18 a of the upper heat insulator 18 is press-fitted to the concave ridge 13 a of the lower heat insulator 13. . Finally, the cover 22 covers the electric compressor 6, the condenser 8, the evaporator 10 covered with the upper and lower heat insulators 13 and 18 on the unit substrate 5, and the left and right sides of the unit substrate 5 having the ridges 5b. A cover 22 is detachably attached to the portion with screws, and the upper surface of the upper heat insulator 18 covering the evaporator 10 is pressed by the ceiling.

In this manner, the evaporator 10 and the dew tray 11
When the cooling unit 4 is mounted on the outer upper surface of the storage body 1 with screws as shown in FIG. 1, the evaporator 10 including the cool air inlet 16 and the cool air outlet 17 located on both sides of the evaporator 10 is connected to the outside. The cold air inlet 16 and the cold air outlet 17 are isolated from each other through the opening on the upper surface of the storage main body 1 and communicate with the inside of the refrigerator, and the cool air is circulated in the refrigerator by the action of the blower 9 as shown by an arrow in FIG.

As described above, in this embodiment, the lower heat insulator 13
The dew tray 11 is fitted and mounted on the mounting recess 14 of the unit substrate 5, and the evaporator 10 is mounted on the bottom plate 10 a of the mounting recess 1 of the lower heat insulator 13.
The evaporator 10 is fitted from above to the support portion 19 on the inner bottom of the exposure pan 11 fitted to 4, and further joined to the lower heat insulator 13 to cover the evaporator 10 from the evaporator 10 from above. A pair of internal ribs provided on the left and right sides of the upper heat insulator 18 are fitted to and sandwiched by the left and right side plates of the evaporator, and a cover 22 that covers the upper and lower heat insulators 13 and 18 is unitized. Since the upper heat insulator 18 is held down by the cover 22 while being attached to the substrate 5 and the evaporator 10 and the dew tray 11 are mounted, the evaporator and the dew tray can be mounted on the unit substrate 5 without using screws, and the cost is low. , And can greatly increase productivity.

Since the evaporator 10 is a compact fan coil unit having two flat box fans 9 arranged side by side, the upper and lower heat insulators 13 and 18 which cover the same are provided.
The installation area on the unit substrate 5 is also reduced, which leads to downsizing of the cooling unit 4.

In the present embodiment, the upper and lower heat insulators 13 and 18 covering the evaporator 10 and the
A flow path of zigzag is formed on the contact surface with the pair of flanges 23, and an airtight sealing material 24 is present on the outer peripheral surface of the drainage pipe between the pair of flanges 23. Therefore, the accuracy of preventing the cool air from leaking out of the upper and lower heat insulators 13 and 18 from the evaporator 10 side can be improved.

In the above embodiment, when the evaporator 10 is mounted, the evaporator 10 is first placed in the upper heat insulator 18. On the contrary, the evaporator 10 is fitted to the support 19 of the dew tray 11 and placed. Alternatively, a method of covering the evaporator 10 with the upper heat insulator 18 may be used.

[0024]

As described above, according to the first aspect of the present invention, a mounting recess is formed in a lower heat insulator provided by fitting to a unit substrate, and a dew tray is fitted into the mounting recess. A bottom plate is fitted to a support portion provided on the inner bottom of the dew receiving tray, and the evaporator is provided in an upright state. The evaporator is covered with a container-like upper heat insulator and pressed down, and the inside of the upper heat insulator is held down. A pair of internal ribs provided on the left and right sides are fitted to and sandwiched by the left and right side plates of the evaporator, and furthermore, a cover is placed on the upper and lower heat insulators and attached to the unit substrate, and the upper heat insulator is pressed by the cover. In the cooling unit, since the evaporator and the dew tray are not mounted using screws as in the conventional case, the cost can be reduced and the productivity can be greatly improved.

According to a second aspect of the present invention, in the first aspect, a pair of flanges are provided on an outer periphery of a drain pipe of a dew tray supporting a lower portion of the evaporator, and the drainage located between the flanges is provided. While wrapping an airtight sealing material around the outer peripheral surface of the pipe, the upper and lower heat insulators are drain pipes of the dew tray,
A cooling unit formed in contact with and joined to a flange and an airtight sealing material. This increases the flow resistance of the entire contact surface between the upper and lower heat insulators and the drainage pipe, thereby improving the accuracy of the seal and preventing cold air leakage. .

[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 sectional view of a main part of an evaporator part of the cooling unit.

FIG. 4 is an enlarged sectional view of a main part of a dew tray portion of the cooling unit.

FIG. 5 is an exploded perspective view of a dew tray portion of the cooling unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling unit 5 Unit board 10 Evaporator 11 Exposure tray 12 Drain pipe 13 Lower heat insulator 14 Mounting recessed part 18 Upper heat insulator 19 Support part 20 Internal rib 22 Cover 23 Flange 24 Airtight seal material

Claims (2)

[Claims] 1. A mounting recess is formed in a lower heat insulator provided on a unit substrate, an exposure tray is fitted into the mounting recess, and a bottom plate is fitted into a supporting portion provided on the inner bottom of the exposure tray to evaporate. A vessel is provided in an upright state, and a vessel-shaped upper heat insulator is placed over the evaporator and pressed down, and a pair of internal ribs provided on the left and right inside the upper heat insulator are fitted to left and right side plates of the evaporator. A cooling unit comprising a cover which covers the upper and lower heat insulators, is attached to the unit substrate, and holds down the heat insulator. 2. A pair of flanges are provided on an outer periphery of a drain pipe of a dew tray supporting a lower portion of an evaporator, and an airtight sealing material is wound around an outer peripheral surface of the drain pipe located between the flanges. Insulation body drain pipe of the dew tray,
The cooling unit according to claim 1, wherein the cooling unit is formed in contact with and joined to a flange and an airtight sealing material.