JP2003227674A - Cooling storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling storage that facilitates replacement of an electric part in an insulated case and wiring for the electric part. <P>SOLUTION: The insulated case is installed on a ceiling part of the cooling storage, and covers electric parts such as an evaporator and a fan motor for blowing air cooled in the evaporator. The insulated case comprises a case body having a notch with a seal member for covering cords on the electric parts, and a lid removable from the case body. The seal member is projected from the case body, and the lid is secured to the case body as compressing the seal member. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a heat insulating case for covering electric parts such as a fan motor for blowing air cooled by an evaporator of a cooling storage such as a prefabricated storage.

[0002]

2. Description of the Related Art A prefabricated warehouse 1 formed by assembling conventional prefabricated panels has a ceiling 4 as shown in FIG.
The refrigerator 2 is arranged in the inside to cool the inside of the refrigerator. The refrigerator 2 is mounted on a frame 3 fixed to the ceiling 4 of the prefabricated warehouse 1 and includes a refrigeration circuit and an electrical equipment box 5 for performing electrical control. The refrigeration circuit includes a compressor 6, a condenser 7, an evaporator 8, an evaporator fan motor 15 (not shown), and the like. The evaporator 8 and the cooling fan motor are covered with a heat insulating case 9.

As shown in FIG. 5, inside the heat insulating case 9, a square hole 10 is opened in the ceiling 4, and an evaporator 8 and a drain tray 11 are supported above the square hole 10. A partition plate 12 extending to the inside of the storage via a square hole 10 is connected to the lower part of the drainage tray 11, and the partition plate 12 further includes a guide duct 1
3 are connected. In addition, the evaporator 8 in the heat insulating case 9
Is equipped with a fan motor 15 in the vicinity thereof, and the air in the refrigerator is sucked into the heat insulating case 9 through the square hole 10 and the evaporator 8
After being cooled by, it is guided by the guide duct 13 and blown out into the refrigerator. When such a cooling operation is continuously performed, frost grows on the surface of the evaporator 8 and eventually the frost forms on the evaporator 8.
There is a risk that the cooling efficiency of the inside of the refrigerator will be reduced by covering the above. Therefore, the high-temperature refrigerant discharged from the compressor 6 is bypassed to the evaporator 8 at regular time intervals, or the defrost heater 14 is operated for a predetermined time to perform a defrosting operation for melting frost. The frost melted by the defrosting operation became defrosting water and flowed to the drain tray 11.

[0004]

However, the fan motor 1 is installed in the heat insulating case of the cooling storage as described above.
5 and the electric components such as the defrosting heater 14 are provided, but when the electric components such as the fan motor 15 and the defrosting heater 14 that have been used for a long period of time exceed the usage limits, they may need to be replaced. In this case, it is necessary to remove the entire heat insulating case 9, but it is not preferable because the cold air in the refrigerator is released to the outside during the replacement work and the temperature in the refrigerator rises. Further, since the heat insulating case 9 has to be removed upward, it cannot be removed in a place where the ceiling of the room in which the prefab cabinet 1 is installed is low. Therefore, when the ceiling of the room is low, replacement work will be performed from the inside through the square hole 10.
Since the partition plate 12 and the guide duct 13 become an obstacle, they have to be removed, which is troublesome. In addition, it is difficult to perform the exchange work from the inside because the inside is cold and the stored items inside must be moved so as to be able to work.

Further, the fan motor 15 in the heat insulating case 9
Since the cords of electric components such as the defrosting heater 14 and the like pass through the wall surface of the heat insulating case 9 and are connected to the electrical equipment box 5 placed on the ceiling 4 of the prefabricated warehouse 1, the heat insulating case 9
For the wiring work of the cord that passes through the inside and outside, after providing the cord in the hole formed in the heat insulating case 9, a clay-like sealing material is applied to fill the gap to prevent outside air entry and cold air leakage. However, when replacing the electric parts in the heat insulating case 9, the cord also needs to be detached,
Since the sealing material is used, when removing the cord, peel off the hardened sealing material due to aging, pass the cord through the hole opened in the heat insulating case again as in the case of preparation, and then remove the sealing material. It was a laborious task to perform.

The present invention has been made to solve the above problems, and it is an object of the present invention to facilitate replacement of electric parts in the heat insulating case 9 and wiring work of the electric parts.

[0007]

In order to achieve the above-mentioned object, the first aspect of the present invention is to place an evaporator or air cooled by the evaporator on the ceiling of a cooling storage. In a heat insulating case for covering an electric component such as a fan motor, the heat insulating case includes a case body having a notch provided with a seal member covering the cord of the electric component, and a lid body detachable from the case body, The seal member is projected from the case body, and the seal member is pressed to fix the lid body to the case body. In addition, claim 2 of the present invention
The sealing member includes a hole through which the cord is passed and a piece formed by a slit provided below the hole.The piece is pressed to fix the lid body to the case body. It is characterized by that.

[0008]

According to the cooling storage of the present invention, the cooling storage is mounted on the ceiling of the cooling storage and covers the evaporator and electric parts such as a fan motor for blowing the air cooled by the evaporator. Is provided with a case body provided with a notch portion provided with a seal member for covering the cord of the electric component and a lid body detachable from the case body, the seal member protruding from the case body, and pressing the seal member,
By fixing the lid body to the case body, it is easy to replace the electric parts provided in the heat insulating case and attach and detach the cords of the electric parts provided in the notches of the case body.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing the heat insulating case lid of the present invention removed. This heat insulation case 9
It is arranged on a frame 3 fixed to the ceiling 4 of the prefabricated warehouse 1. A square hole 10 is opened in the ceiling 4 of the prefabricated warehouse 1, and an evaporator 8 is supported above the square hole 10.
A heat insulating case 9 is fixed to the frame 3 via a fixing plate 25 so as to include the evaporator 8 and cover the square hole 10. Below the evaporator 8 is a drain tray 11 for receiving defrost water,
An antifreeze heater 16 is attached by being attached with an aluminum foil tape or the like, and further, a partition plate 12 extending to the inside of the refrigerator through a square hole 10 and a guide duct 13 for guiding air are provided below the drainage tray 11. ing. Further, the evaporator 8 is a compressor 6 installed on the frame 3 outside the heat insulating case 9,
It is connected to the condenser 7 etc., and by the operation of the compressor 6,
The inside of the prefabricated warehouse 1 is cooled by exchanging heat with the evaporator 8.

The heat insulating case 9 covering the evaporator 8 is divided into a case body 22 and a lid 23, and the lid 23 attached to a part of the open side surface of the heat insulating case 9 is attached. Frame 3 that can be freely attached and detached via plates 26, 26
And is attached to the case body 22. A fixing plate 25 having an L-shaped cross section is attached to each of the lower sides of the three side walls of the case body 22. Each fixed plate 2
The case main body 23 is pressed and fixed to the frame 3 by fixing the vertical surface of 5 to the lower side of the case main body 22 and the horizontal surface of the other surface to the frame 3 with screws or rivets.

Mounting plates 26 are fixed to both left and right sides of the lid 23, and mounting plates 24 are fixed to two side walls adjacent to the opening side of the case body 22, respectively.
By fixing the mounting plate 24 and the mounting plate 26 with screws, rivets or the like, the lid body 23 is pressed against the case body 22 and mounted. Fixing portions 27 are formed respectively under the left and right mounting plates 26, and the mounting plate 26 is also fixed to the frame 3 by screws or the like via the fixing portions 27. Therefore, the attachment plate 26 is attached not only to the case main body 22 but also to the frame 3 via the fixing portion 27, so that the attachment plate 26 is attached.

The case body 22 of the heat insulating case 9 is formed into a box-like shape by fitting a flat plate into a sheet metal (not shown), and the molded vinyl is attached to the inner surface of the box-like sheet metal so as to leave a constant gap. Further, a mounting plate 24 and a fixing plate 25 are provided on the surface of the case body 22. Then, urethane foaming is applied to the gap between the sheet metal and the flat plate and the vinyl to fill the foam. In addition, the lid 23 of the heat insulating case 9
In this case, Styrofoam is attached along the inside of a sheet metal bent into a box shape (not shown), and vinyl is attached to the Styrofoam. Mounting plates 26 are fixed to the left and right of the lid 23, and urethane foaming treatment is performed between the styrofoam and vinyl to fill the foam. Like the structure of the case body 22 and the lid 23 described above, since the urethane foaming treatment is performed, the heat insulating property is improved, and the heat insulating case 9 can be made thin while having the same heat insulating rate.

Due to the structure of the heat insulating case 9, the fan motor 15 and the cooler 8 provided inside the case main body 22 and fixed to the cooler 8 are fixed by simply removing the lid 23 from the case main body 22. It is possible to replace the electric components such as the defrosting heater 14 provided with the fixing member and the antifreezing heater 16 provided in the drainage tray 11.
In particular, the antifreezing heater 16 provided in the drain tray 11
Since the drainage tray 11 can be pulled out forward, replacement work can be performed more easily. Further, a cutout portion 28 through which a cord of an electric component such as the fan motor 15 and the defrost heater 14 passes is provided below one side wall on the opening side of the case body 22, and the cord 35 is wrapped in the cutout portion 28. By providing the heat seal member 31, the heat insulating case 9
The cords 35 of electric parts such as the fan motor 15 and the defrost heater 14 provided inside are connected to the electrical equipment box 5 mounted on the ceiling 4 of the prefabricated warehouse.

As shown in FIG. 2 (1), the sealing member 31 is made of a rectangular parallelepiped resin closed-cell foam, and has a hole for passing a plurality of cords 35 for energizing electric parts in the central portion. 32 and a slit 33 vertically below the hole 32
With this slit 33, the openable and closable piece 34
Is provided. Since the slits 33 are provided in the lower longitudinal direction with the piece portion 34 separated, the case body 22 and the lid body 2
Even if dew or the like is generated between the slit 3 and 3, the dew or the like does not soak into the slit 33. Further, as shown in FIG. 2 (2), by holding both side walls of the openable / closable piece portion 34 and lifting it upward, the cord 35 is visually observed from the front side when the electric parts such as the fan motor 15 are replaced. As a result, the cord 35 of the replacement part is pulled out from the slit 33 of the seal member 31. After the parts are replaced, the piece 34 is lifted from the bottom to the top again to insert the cord 35, and then the piece 34 is lowered to obtain the state shown in FIG. At the time of this wiring work, the dimension C of the seal member 31
To make it difficult to cut the piece 34.

Further, as shown in FIGS. 3 (1) to 3 (4),
To attach the lid 23 to the heat insulating case 9, first, the seal member 31 in which the cord 35 is inserted into the hole 32 is inserted into the notch 28 of the heat insulating case 9 and the case body 2 of the heat insulating case 9 is inserted.
Prepare for 2. The length L of this seal member 31 (see FIG. 2)
Is set to be slightly longer than the length M of the cutout portion 28, so that the seal member 31 is provided so as to protrude from the side wall of the case body 22. Next, the lid body 23 is applied to the surface of the one portion 34 of the seal member 31, and is provided while sliding from above, and the lid body 23 is brought into close contact with the case main body 22 to compress the seal member 31 which is an elastic body. At this time, the gap of the slit 33 disappears, and the dimension D of the piece portion 34
(See FIG. 2) is compressed by the lid 23 and shortened.
After the case body 22 is provided with the lid 23, the case body 22
The lid 2 is attached to the attachment plates 24 attached to the left and right two places of the
It is fixed by tightening bolts at a total of four places through fixing plates 26 attached at two places on the left and right sides of the No. 2 mount.

Since the notch portion 28 is provided with the above-mentioned seal member 31, the mounting plate 24 and the lid body 23 of the case body 22 are provided.
The lid 23 is attached to the case main body 22 while pressing the seal member 31 by connecting the mounting plate 26 of the above with a screw, a rivet, or the like.
The airtightness with 3 can be improved. The sealing effect of the seal member 31 is further improved by increasing the dimension D of the piece 34. Further, since the slit 33 of the seal member 31 is provided in the vertical direction, the lid 23 is attached to the heat insulating case 9
The case body 2 of the heat insulating case 9 can be made smooth without being caught when it is attached to
It was possible to prevent the dew condensation on the outside and the freezing on the inside of the portion where the lid 2 and the lid 26 are fixed. Further, since the slit 33 of the seal member 31 is provided eccentrically from the center of the hole, when the lid 23 is removed, the lower surface of the piece portion 34 has a small area of contact with the ceiling 4, and since it is an elastic body, the piece portion 34 can be easily lifted,
Detachment of the cord 35 has become easier.

When the lid body 23 is removed from the case body 22, all screws and the like that must be removed are removed from the lid body 2.
It is located on the front side of No. 3. Therefore, the heat insulating case 9
It is possible to easily replace and maintain the internal electric parts. Further, the left and right mounting plates 24 provided on the case body 22 and the left and right mounting plates 26 provided on the lid 23.
Since the fixing portion 27 of is fixed directly to the frame 3, the lower side is fixed along the outer peripheral portion of the heat insulating case 9, the hermeticity between the heat insulating case 9 and the ceiling 4 is improved, and It is possible to prevent cold air from leaking and ingress of outside air, and prevent the prefabricated warehouse from being cold.

According to the present invention having the above structure, even if the electric parts such as the fan motor 15 and the defrosting heater 11 provided in the heat insulating case 9 are replaced, the lid 23 of the heat insulating case 9 is simply removed. Since it is not necessary to remove the entire heat insulating case 9, it is difficult for the cool air in the refrigerator to be released to the outside during the replacement work, and the temperature in the refrigerator does not rise significantly. Insulation case 9
Since it is not necessary to remove it above, even if the ceiling of the warehouse where the prefabricated warehouse 1 is installed is low, there is no need to replace electrical parts through the square holes 10 from inside the warehouse where stored items are stored at low temperature Is easy. In addition, the cord of the electric component to be replaced can be easily attached and detached, and since the slit 33 does not freeze, the airtightness between the case main body and the lid is improved, and the cold air leaks from the inside of the prefab warehouse and the outside of the warehouse. It was possible to prevent outside air from entering.

[Brief description of drawings]

FIG. 1 is a perspective view of a heat insulating case of the present invention with a lid removed.

FIG. 2 is a schematic perspective view of a seal member of the present invention.

FIG. 3 is a schematic perspective view showing a state in which the lid of the heat insulating case of the present invention is attached.

FIG. 4 is a schematic perspective view of a conventional prefabricated warehouse.

FIG. 5 is a schematic sectional view of a conventional refrigerator.

[Explanation of symbols]

1 ... Prefab warehouse 2 ... refrigerator 3 ... frame 4 ... Ceiling 5 ... Electrical box 6 ... Compressor 7 ... Condenser 8 ... Evaporator 9 ... Insulation case 10 ... Square hole 11 ... Drainage tray 12 ... Partition board 13 ... Guide duct 14 ... Defrost heater 15 ... Fan motor 16 ... Antifreeze heater 21 ... Insulation case 22 ... Case body 23 ... Lid 24 ... Mounting plate 25 ... Fixing plate 26 ... Mounting plate 27 ... Fixed part 28 ... Notch 31 ... Seal member 32 ... hole 33 ... Slit 34 ... One side 35 ... Code

Claims (2)

[Claims] 1. A heat insulating case which is mounted on a ceiling of a cooling storage and covers electric parts such as an evaporator and a fan motor which blows air cooled by the evaporator. The lid includes a case body provided with a notch provided with a seal member covering the cord, and a lid body detachable from the case body. The seal member is protruded from the case body, and the seal member is pressed to form the lid. A heat insulating case for a cooling storage, wherein a body is fixed to the case body. 2. The seal member is provided with a hole portion through which the cord is passed and a piece portion formed by a slit provided below the hole portion, and the lid body is pressed by pressing the piece portion. The heat-insulating case for a cooling storage cabinet according to claim 1, wherein the heat-insulating case is fixed to the heat storage case.