JPH09210532A - Cooling storage warehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling storage warehouse which makes it possible to efficiently air-cool a compressor and a condenser. SOLUTION: This cooling storage warehouse comprises a heat insulation box body 1 for forming a storage chamber 2, a cooler 6 for cooling the chamber, and a compressor 21 and condensers 31, 32 for constituting a refrigerating cycle together with the cooler, wherein the compressor is disposed above the body. A cover plate 11 covers the back surface of the body and constitutes a duct 12 together with the back surface of the body. A blower 22 supplies the air from the lower opening of the duct toward the upper opening. The condenser has a first refrigerant tube 31 for the condenser disposed in a zigzag manner along the back surface of the body, and a second refrigerant tube 32 for the condenser disposed in a zigzag manner along the surface of the plate at the duct side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating cycle including a compressor, a condenser, a cooler and the like, and a cooling storage such as a freezer or a refrigerator in which a storage chamber is cooled by the cooling.

[0002]

2. Description of the Related Art A conventional cold storage will be described with reference to FIG. FIG. 11 is a sectional view of the cooling storage. This FIG.
The cooling storage illustrated in FIG. 1 is a so-called vertical refrigerator, and a storage chamber 02 is defined inside the heat insulating box body 01.
A cooler 03 is provided above the storage chamber 02, and the cooler 03 cools the storage chamber 02. The compressor 04 and the condenser 05, which form a refrigeration cycle together with the cooler 03, are arranged on the upper surface of the heat insulating box body 01. The condenser 05 is a fin tube type. Further, a blower 06 is also mounted on the upper surface of the heat insulating box body 01, and this blower 06 blows air above the heat insulating box body 01 from the front to the rear as shown by the arrow. 04 and condenser 05 are air-cooled.

[0003]

By the way, in the fin tube type condenser 05, a filter is provided on the air intake side so as to prevent dust and dirt from adhering to the fins. This filter needs to be cleaned regularly,
It takes time and effort. Further, if the cleaning is neglected, the filter will be clogged and the ability to cool the compressor 04 and the condenser 05 by air will be reduced, and the cooling efficiency of the refrigeration cycle will be reduced accordingly.

The cooling storage is installed in a kitchen room or the like, and the air in the upper part of the kitchen room is heated to a high temperature by a gas range used for cooking.
The blower 06 is connected to the compressor 04 and the condenser 05,
The air above the heat insulating box body 01, that is, the warm air above the kitchen room is blown. Therefore, the efficiency of cooling the compressor 04 and the condenser 05 is not good.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a cooling storage that can efficiently cool a compressor and a condenser by air.

[0006]

SUMMARY OF THE INVENTION The cooling storage of the present invention comprises:
Insulation box body (1) that defines storage room (2) with heat insulating material
And a cooler (6) for cooling the storage chamber, and a compressor (21) and a condenser (31, 32) forming a refrigeration cycle together with the cooler, the compressor being a heat insulating box body. Is located above. And in order to achieve the said objective, in the cooling storage of this invention, while a cover plate (11) covers the back surface of the said heat insulation box main body,
A duct (12) is formed with the back surface of the heat insulating box body.
The upper and lower parts of this duct are open, and there is provided a blower (22, 41) for blowing air from the lower open part of the duct to the upper open part. In addition, the condenser is arranged in a meandering manner along a condenser-side first refrigerant pipe (31) arranged in a meandering manner along the back surface of the heat insulating box body and in a duct side surface of the cover plate. The second refrigerant pipe (32) for the condenser is provided.

Further, a guide part (14) for guiding the air exhausted from the open part in the upper part of the duct to the compressor may be provided.

A sound insulation wall (2) is provided in front of the compressor.
4, 46) may be provided.

The sound insulation wall (46) is formed so as to gradually become rearward from the central portion toward both lateral sides,
In some cases, the compressor is arranged almost directly behind the center of the sound insulation wall.

Further, a duct member (51) is provided in which a compressor disposed above the main body of the heat insulation box is detachably provided, and a duct whose upper and lower parts are open is formed.
Is detachably provided on the back surface of the heat-insulating box main body, a blower is provided for blowing air from the lower opening portion of the duct to the upper opening portion, and the condenser is an inner surface of the duct member. There may be a case where the condenser refrigerant pipe is arranged so as to meander along the above.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of a cooling storage according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a cooling storage according to the present invention.
FIG. 2 is a sectional view of the cooling storage. FIG. 3 is an explanatory diagram of the flow of air. FIG. 4 is a perspective view of the cooling storage with the side plate and the side plate removed, as viewed from the rear. FIG. 5 is a diagram of the flow of air to the refrigerant pipe.

In FIGS. 1 and 2, a heat-insulating box body 1 of a vertical refrigerator as a cooling storage has an outer box and an inner box made of a metal plate such as a stainless steel plate, and the outer box and the inner box. It is formed by injecting and foaming a heat insulating material such as urethane into the space between them. A storage chamber 2 is defined inside the heat insulating box body 1, and an opening 3 for storing and taking out refrigerated items is formed on the front surface of the heat insulating box body 1. A total of four heat insulating doors 5, which are front doors that close the opening 3, are attached to the heat insulating box body 1 so as to be openable and closable. In addition, shelves (not shown) are arranged in multiple stages in the storage room 2,
At the upper part of the storage room 2, a cooler 6 and a cooler blower 7 are provided.
Is provided. A drain pipe 9 for discharging drain water such as defrost water generated in the cooler 6 penetrates the heat insulating box body 1 from a cooler drain receiver arranged in the storage chamber 2,
The heat insulating box body 1 extends downward in a state of being in close contact with the back surface thereof.

The back surface of the heat insulating box body 1 is covered with a cover plate 11 made of a metal plate such as a painted steel plate or a stainless steel plate. The cover plate 11 forms a duct 12 with the back surface of the heat insulating box body 1, and includes a back plate 11a facing the back surface of the heat insulating box body 1 and a pair of side plates 11b closing both left and right ends of the duct 12. Has been done. An upper end portion of the cover plate 11 extends above the upper surface of the heat insulating box body 1, and a guide plate 14 protruding forward is attached to the upper end portion of the cover plate 11. In this way, the lower and upper parts of the duct 12 are open as shown in FIG.

Above the heat insulating box body 1, the front surface is a front grill 16 which is a front plate, and the left and right side surfaces are side plates 17,
The back side is covered with the above-mentioned cover plate 11 to form a machine room 19. A part of the upper surface of the machine chamber 19 is covered with the guide plate 14 described above, but most of the other part is open. A compressor 21 and a condenser blower 22 are arranged in the machine room 19. A flat sound insulation wall 2 is provided in front of the compressor 21, that is, between the compressor 21 and the front grill 16.
4 are arranged. The sound insulation wall 24 is formed of a sound insulation material such as urethane foam. In FIG. 1, the sound insulation wall 24 is hatched for easy understanding. The sound insulation wall 24 is detachably provided, and when the compressor 21 and the condenser blower 22 are inspected and repaired,
It can be performed by removing the sound insulation wall 24.

2 and 4, the first condenser refrigerant pipe 31 is closely attached to the inner surface of the outer box forming the back surface of the heat insulating box main body 1 along the inner surface of the outer box, and , Meanderingly arranged. This condenser first refrigerant pipe 31 is attached to the inner surface of the outer box with aluminum tape or the like before the heat insulating material is filled between the outer box and the inner box of the heat insulating box main body 1, and the first refrigerant refrigerant for the condenser is provided. After the pipe 31 is attached, the heat insulating material is filled and foamed between the outer box and the inner box to manufacture the heat insulating box body 1. In addition, the second refrigerant pipe 32 for the condenser
However, the back plate 11 of the cover plate 11 is welded or screwed.
It is attached in a meandering manner in a state in which it is in close contact with the surface of the duct a on the duct 12 side. By connecting the first condenser refrigerant pipe 31 and the second condenser refrigerant pipe 32 in series,
A condenser is formed. And this condenser 31,3
2, the cooler 6 and the compressor 21 constitute a refrigeration cycle.

When the refrigerating cycle of the cooling storage according to the first embodiment having the above-described structure operates, the cooler 6 is cooled. When the cooler blower 7 rotates,
As shown by the arrow in FIG. 3, the blower 7 for the cooler draws in the air in the storage chamber 2 and supplies it to the cooler 6. Cooler 6
The air supplied to the cooler 6 is cooled by the cooler 6, becomes cool air, and is discharged below the storage chamber 2, cools the storage chamber 2, and is again sucked into the cooler blower 7 to move inside the storage chamber 2. Forced circulation. In this way, the storage chamber 2 is cooled. Further, although frost is formed on the cooler 6, this frost is defrosted at any time,
It becomes drain water and is drained through the drain pipe 9.

On the other hand, when the condenser blower 22 rotates,
The outside air is sucked through the open portion at the lower end of the duct 12, and the sucked air rises in the duct 12. The direction of this air flow is changed to the front by the guide plate 14 that is a guide portion in the upper part of the duct 12, and flows toward the compressor 21. Then, it hits the sound insulation wall 24 and diffuses upward. With the flow of air generated by the condenser blower 22,
The condensers 31 and 32 and the compressor 21 whose temperature is rising
Is air cooled. In particular, as shown in FIG. 5, the second condenser refrigerant pipe 32 is cooled efficiently because turbulent flow occurs around the pipe. The heat of the second condenser refrigerant pipe 32 is
The heat is transmitted to the cover plate 11 made of a material having good heat conductivity such as a metal plate and is also exhausted to the outside air from the rear surface of the cover plate 11.

Further, the sound at the time of starting the compressor 21 and the wind noise of the blower 22 for the condenser are blocked by the sound insulation wall 24, and the leakage to the front of the cooling storage is reduced. Further, even when the front grill 16 is opened, it is possible to prevent the hand from reaching the compressor 21 and the condenser blower 22 by being blocked by the sound insulation wall 24.

As described above, in the first embodiment, the first condenser refrigerant pipe 31 is arranged along the back surface of the heat insulating box body 1. Since the drainage pipe 9 is laid along the back surface of the heat insulating box body 1, the first condenser refrigerant pipe 31 heats the drainage pipe 9 via the outer box of the heat insulating box body 1. Therefore, it is possible to prevent the drain water from freezing in the drain pipe 9. As a result, clogging of the drain pipe 9 due to freezing is reduced. When the condenser first refrigerant pipe 31 is not provided on the back surface of the heat insulating box body 1, the heat insulating box body 1 is at a low temperature due to the cold air in the storage chamber 2, and the drain water of the drain pipe 9 is May freeze.

Further, since the cover plate 11 is made of a material having good heat conduction and the second condenser refrigerant pipe 32 is disposed in close contact with the cover plate 11, the second condenser refrigerant pipe 32 is provided. Is exhausted to the airflow flowing through the duct 12 and also transferred to the cover plate 11 to be exhausted to the outside air from the rear surface of the cover plate 11. Therefore, the efficiency of air cooling the condenser is improved.

Next, a second embodiment of the cooling storage according to the present invention will be described with reference to FIGS. 6 and 7.
FIG. 6 is a perspective view of the cross-flow blower. FIG. 7 is a sectional view of the cooling storage. In the description of the second embodiment, constituent elements corresponding to those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In the second embodiment, instead of the propeller-type condenser fan 22 of the first embodiment, a cross-flow fan 41 shown in FIG. 6 is installed. The cross-flow blower 41 has substantially the same size as the width of the cooling storage, and its axis is arranged in the width direction of the cooling storage so that the air in the duct 12 can be sucked in a substantially uniform state in the width direction of the cooling storage. it can. Therefore, the air flows uniformly over substantially the entire condensers 31, 32, and the cooling efficiency of the condensers 31, 32 is improved.

Next, a third embodiment of the cooling storage according to the present invention will be described with reference to FIGS. 8 and 9.
FIG. 8 is a perspective view of the cooling storage. FIG. 9 is a plan view of the cooling storage. In the description of this third mode,
The constituent elements corresponding to the constituent elements of the first and second embodiments are designated by the same reference numerals, and detailed description thereof will be omitted. Note that, in FIGS. 8 and 9, the sound insulating wall is hatched for easy understanding.

In the third embodiment, a V-shaped sound insulation wall 46 is installed in place of the flat sound insulation wall 24 of the first embodiment. The sound insulation wall 46 has a substantially V shape in a plan view, and is formed so as to gradually become rearward from the central portion toward both lateral sides, and both left and right sides are located rearward of the central portion. . The air flow whose flow is changed forward by the guide plate 14 is, as shown in FIG.
And flows toward the central portion of the machine room 19 along the sound insulation wall 46, hits the compressor 21 arranged approximately in the center of the cooling storage in the width direction, and then diffuses upward.

Therefore, most of the air flowing through the duct 12 can hit the compressor 21 and the compressor 2
The efficiency of air cooling 1 is improved. In particular, it is effective when the cross-flow type blower 41 which produces a substantially uniform flow in the width direction of the cooling storage is adopted.

Next, a fourth embodiment of the cooling storage according to the present invention will be described with reference to FIG. FIG. 10 is a sectional view of the cooling storage. In the description of the fourth embodiment, the constituent elements corresponding to the constituent elements of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In the fourth embodiment, the compressor 21 is installed on the upper surface of the heat insulating mount 49, and the cooler 6 is suspended from the lower surface of the mount 49. In this way, the compressor 21 and the cooler 6 are attached to the mounting base 49, and the mounting base 49 is fitted into the mounting base opening formed on the upper surface of the heat insulating box body 1 and is detachably fixed. There is. Also, on the back surface of the heat insulation box body 1,
The first refrigerant pipe 31 for the condenser is not buried. And in the 1st form, the duct 12 is the heat insulation box main body 1
The cover member 11 and the back surface of the heat insulating box main body 1 are included in the fourth embodiment.
It is composed of 1. This duct member 51 has a front wall 5
2, a rear wall 53, and a pair of side walls 54, and the upper and lower parts are open. A guide plate 55 is attached to the upper end of the duct member 51, and the opening at the upper part of the duct member 51 is formed toward the front.

The first condenser refrigerant pipe 31 is arranged in a zigzag manner in close contact with the surface of the front wall 52 of the duct member 51 on the duct 12 side, that is, the inner surface. Similarly, the second condenser refrigerant pipe 32 is connected to the duct member 51.
The inner wall of the rear wall 53 is arranged in a zigzag manner so as to be in close contact with it. Duct member 51 configured in this way
Is detachably attached to the back surface of the heat insulating box body 1 by a fixing means such as a screw.

By the way, the condensers 31, 32, the cooler 6 and the compressor 21 constitute a refrigerating cycle and are connected by a refrigerant pipe. If this connection is cut off, the refrigerant leaks. Therefore, the connection should be cut off. It can't be done easily. Therefore, it is difficult to remove the compressor 21 from the heat insulating box body 1 with the condenser 31 still attached to the heat insulating box body 1. Therefore, the first refrigerant pipe 31 for the condenser
In the first embodiment in which is embedded in the heat insulating box body 1, the first condenser refrigerant pipe 31 is not removable,
It was not easy to remove the compressor 21 from the heat insulating box body 1. However, in the fourth embodiment, since the first condenser refrigerant pipe 31 is disposed in the detachable duct member 51, the compressor 21 is removed from the duct member 51 by removing the mounting base 49 from the heat insulating box body 1. Together with 51, it can be easily removed from the heat insulating box body 1.

Therefore, when the cooling storage is carried into the installation location, the height and width of the entrance may be small. In such a case, the mounting base 49 and the duct member 51 should be removed from the heat insulating box body 1. In addition, the height of the cooling storage and the dimension in the depth direction can be reduced to facilitate the loading.

The embodiment of the present invention has been described above in detail.
The present invention is not limited to the above embodiment,
Within the gist of the present invention described in the claims,
Various changes can be made. Modification examples of the present invention are exemplified below. (1) In the embodiment, the condenser is composed of the condenser first refrigerant pipe 31 and the condenser second refrigerant pipe 32, but an auxiliary condenser may be provided separately.

(2) In the embodiment, the condenser blower 22 and the cross-flow blower 41 are arranged above the heat insulating box main body 1, but the air in the duct 12 can be blown upward from below. If possible, the arrangement can be changed appropriately. For example, it may be provided in the lower part of the duct 12 or the like.

(3) In the first embodiment, the first condenser refrigerant pipe 31 is embedded in the heat insulating box body 1, but is arranged along the duct 12 side on the back surface of the heat insulating box body 1. It is also possible. (4) In the embodiment, the first refrigerant pipe 3 for the condenser
Although 1 and the 2nd condenser refrigerant | coolant piping 32 are connected in series, it is also possible to connect in parallel.

(5) In the embodiment, the guide portion is composed of the guide plate 14. However, the guide plate 14 can be formed by bending the upper portion of the cover plate 11 or the cover plate 11 can be formed. It is also possible to manufacture it separately from and attach it to the upper end of the cover plate 11.

(6) In the third embodiment, the sound insulating wall 46 is V-shaped, but if the air from the duct 12 is guided to the compressor 21, its shape can be changed appropriately. For example, it can be formed in a U shape. (7) The sound insulation walls 24 and 46 are not limited to urethane foam, and other resins and materials other than resins can be used as long as they are sound insulation materials.

[0036]

According to the present invention, since the compressor is arranged above the heat insulating box body, it is not necessary to arrange the machine room below the heat insulating box body. Therefore, the bottom of the storage compartment can be lowered, and the lower part of the cooling storage compartment can be effectively utilized as the storage compartment.

By the way, in the conventional cooling storage in which the compressor is arranged above the heat insulating box body in this way, warm air in the upper part of the room in which the cooling storage is installed is blown to the compressor. However, according to the present invention, even though the compressor is arranged above the heat-insulating box body, the cover plate forming the duct with the back surface of the heat-insulating box body is provided and the lower part of the duct is opened. Since there is a blower that blows air from the section to the open section at the top,
Cold air in the lower part of the room where the cooling storage is installed is supplied above the heat insulating box body, and the compressor is cooled by this cold air. Therefore, the cooling efficiency of the compressor can be improved. Moreover, the first refrigerant pipe for the condenser and the second refrigerant pipe for the condenser are provided in this duct, and the condenser can also be efficiently cooled by the blower that supplies cool air above the heat insulating box body. . Moreover, the refrigerant pipes are arranged on both sides of the duct, and the cooling efficiency is remarkably improved as compared with the one side.

Further, since the refrigerant pipe is arranged along the surface of the heat insulating box body and the cover plate, and there is no fin unlike the fin tube type condenser, dust and dirt adhere to the fin. This reduces the time and effort required for cleaning.

Further, when a guide portion for guiding the air exhausted from the open portion at the upper part of the duct to the compressor is provided, the cool air supplied by the duct is efficiently guided to the compressor. be able to.

When the sound insulation wall is provided in front of the compressor, the sound of the compressor or the blower is less likely to leak to the front of the cooling storage. Therefore, the room in which the cooling storage is installed can be made quiet.

Further, the sound insulation wall is formed so as to be gradually rearward from both sides of the sound insulation wall, and the compressor may be arranged substantially directly behind the center portion of the sound insulation wall. In this case, the air exhausted from the duct is guided by the sound insulating wall, flows toward the central portion of the sound insulating wall, and is guided toward the compressor arranged behind the central portion of the sound insulating wall. Therefore, the compressor can be efficiently cooled by air.

Further, the compressor is detachably provided, the duct members form upper and lower open ducts, and the condenser refrigerant pipes are arranged along the inner surface thereof, and the ducts are provided. The member may be detachably provided on the back surface of the heat insulating box body. In this case,
The condenser refrigerant pipe can be removed from the heat insulating box body together with the duct member. Therefore, the compressor connected to the refrigerant pipe for the condenser can be removed from the heat insulating box body together with the refrigerant pipe for the condenser without disconnecting the connection with the refrigerant pipe for the condenser. As a result, when the cooling storage is carried into a room with a small height or width of the entrance / exit, the compressor and the duct member can be easily removed from the main body of the heat insulating box to reduce the height and depth of the cooling storage. It is easy to carry in the cold storage.

[Brief description of drawings]

FIG. 1 is a perspective view of a cooling storage according to the present invention.

FIG. 2 is a sectional view of a cooling storage.

FIG. 3 is an explanatory diagram of the flow of air.

FIG. 4 is a rear perspective view of the side wall and the cooling storage with the side wall removed.

FIG. 5 is a diagram of the flow of air to a refrigerant pipe.

FIG. 6 is a perspective view of a cross-flow blower.

FIG. 7 is a sectional view of a cold store.

FIG. 8 is a perspective view of a cold store.

FIG. 9 is a plan view of a cold store.

FIG. 10 is a sectional view of a cold store.

FIG. 11 is a cross-sectional view of a cold store.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation box main body 2 Storage room 6 Cooler 11 Cover plate 12 Duct 14 Guide plate (guide part) 21 Compressor 22 Blower for condenser 24 Sound insulation wall 31 First refrigerant pipe for condenser 32 Second refrigerant pipe for condenser 41 Cross flow type blower 46 Sound insulation wall 51 Duct member

Claims (5)

[Claims] 1. A heat insulating box main body that defines a storage chamber with a heat insulating material, a cooler that cools the storage chamber, a compressor and a condenser that form a refrigeration cycle together with the cooler, and In the cooling storage in which the compressor is arranged above the heat insulating box body, the cover plate covers the back surface of the heat insulating box body, and forms a duct with the back surface of the heat insulating box body. An air blower is provided that blows air from the lower opening of the duct to the upper opening of the duct, and the condenser is arranged meandering along the back surface of the heat insulating box body. A cooling storage, comprising: a first refrigerant pipe for a condenser, and a second refrigerant pipe for a condenser, which meanders along a duct-side surface of the cover plate. 2. The cooling storage cabinet according to claim 1, further comprising a guide portion for guiding the air exhausted from the open portion of the upper portion of the duct to the compressor. 3. A cooling storage cabinet according to claim 1, wherein a sound insulation wall is provided in front of the compressor. 4. The sound insulation wall is formed so as to be gradually rearward from both sides of the sound insulation wall, and the compressor is disposed substantially directly behind the center of the sound insulation wall. The cooling storage according to claim 3, which is characterized in that. 5. A heat insulating box main body that defines a storage chamber with a heat insulating material, a cooler that cools the storage chamber, a compressor and a condenser that form a refrigeration cycle together with the cooler, and In a cooling storage in which a compressor is detachably provided above the heat insulating box body, a duct member forming a duct whose upper and lower parts are open is detachably provided on the back surface of the heat insulating box body. And a blower that blows air from the lower opening of the duct to the upper opening, and the condenser is a refrigerant for a condenser arranged in a meandering manner along the inner surface of the duct member. A cooling storage, which is equipped with piping.