JP2000097546A - Cooling storehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the temperature of a storage chamber from increasing as much as possible even in the case of defrosting by providing a thermo module consisting of a thermocooling element for cooling the storage chamber in the case of the defrosting of cooling equipment for cooling the storage chamber for storing an object to be cooled. SOLUTION: When shifting to a defrosting operation, a hot gas that is discharged from a compressor 11 is introduced into cooling equipment 9 directly. At this time, the tip part of a channel switching damper 21 is joined to the end part of an introduction plate 20, thus breaking a channel to the cooling equipment 9. At the same time, a switching damper 24 also releases the introduction path to a heat absorption radiator 16 of a thermo Joule unit 14, thus cooling a storage chamber 2 by the heat absorption radiator 16 of the thermo Joule unit 14 and defrosting the cooling equipment by a hot gas and the heat radiation of a cooling radiator 17 of the thermo Joule unit 14 and hence preventing the temperature of the storage chamber 2 from increasing and at the same time accelerating defrosting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling storage for forming a refrigerating cycle to cool a storage room.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, this kind of cooling storage has a storage room 102 defined by a heat insulating box 101,
A heat exchange chamber 104 provided with a cooler 103 for cooling the storage chamber 102; an electric heater 105 for defrosting the cooler 103; a compressor 106 forming a refrigerating cycle with the cooler 103; The cooler 103 includes a condenser 107, a condenser cooling blower 108 for cooling the condenser 107, and a cool air circulation blower 109 for discharging the cool air of the cooler 103 to the storage room 102.

[0003]

The prior art described above is
During defrosting of the cooler 103, warm air from the heater 105 flows into the storage room 102 due to heating by the heater 105, and the temperature of the storage room 102 rises.

[0004] For this reason, the quality of the object to be cooled may be degraded depending on the object.

The present invention has been made in view of the above-mentioned problems, and has as its object to prevent the temperature of a storage room from rising as much as possible even during defrosting.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a cooler for cooling a storage chamber for storing an object to be cooled, and a defroster for cooling the cooler. And a thermo storage module comprising a thermoelectric cooling element for cooling the storage compartment.

As described above, when the cooler is defrosted, the storage room is cooled by the thermo module.

Further, in the invention of claim 2, a cooler for cooling a storage room for storing an object to be cooled, and a heat radiation side is thermally conductively attached to the cooler, and the heat absorption side is the storage room side. A cooling storage provided with a thermo module comprising a thermoelectric cooling element.

In this way, by attaching the heat radiating side of the thermo module to the cooler in a thermally conductive manner, the defrost of the cooler can be performed by the heat radiating of the thermo module, and the storage room is cooled on the heat absorbing side. You can do things.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a conceptual diagram of a cooling storage according to the present invention, and FIG.
FIG. 3 is a perspective view of a luxury confectionery showcase using the present invention, FIG. 3 is a perspective view of a commercial refrigerator or freezer using the present invention, and FIG. 4 is a front view of a household refrigerator using the present invention.

In FIG. 1, reference numeral 1 denotes a cooling storage of the present invention,
A storage room 2 for storing an object to be cooled, and the storage room 2
Is formed by defining a heat exchange chamber 3 for cooling the heat exchanger box 4 with a heat insulating box 4.

The storage room 2 and the heat exchange room 3 are divided by a partition plate 5 having good thermal conductivity. The partition plate 5 has a discharge port 6 for discharging cool air into the storage room 2, and a storage port. A suction port 7 for exchanging heat with the object to be cooled in the chamber 2 and sucking cool air whose temperature is higher than that of the discharged cool air is formed.

Further, a blower 8 for circulating cool air for discharging cool air to the storage room 2 is provided at the outlet 6 of the partition plate 5. In this embodiment, a propeller fan is used as the cool air circulation fan 8, but a cross flow fan or a sirocco fan may be used.

The heat exchange chamber 3 is provided with a tube fin type cooler 9. The cooler 9 is connected to a compressor 11 and a condenser 12 provided outside the heat-insulating box 4 by a refrigerant circulation pipe 10, and the refrigerating cycle is performed by the cooler 9, the compressor 11, and the condenser 12. It constitutes.

In FIG. 1, the condenser 12 is a tube fin type, but may be a wire condenser.

Although not shown here, the refrigerant circulation pipe 10 is provided with a capillary tube, a drier, and the like.

Although not shown, the compressor 11 and the condenser 12 are installed in a machine room of a product to be mounted, and this machine room may be provided in the product body or may be a separate body. When it is provided in the product body, it is installed in a place where the thermal influence of the compressor 11 and the condenser 12 is minimized.

Further, a condenser cooling blower 13 is provided opposite to the condenser 12, and the condenser cooling blower 13 is provided not only in the condenser 12 but also in the compressor 11
Is also provided at a position where it can be cooled. That is, the condenser cooling blower 13 in the present embodiment is a suction type, and the outside air sucked by the condenser cooling blower 13 is supplied to the compressor 11.
The cooler condenser 12 is cooled and then the condenser 1 is cooled.
The compressor 11 is cooled by cooling air whose temperature has risen due to heat exchange with the compressor 2 (however, the temperature is still lower than the temperature of the compressor 11 at this time).

A thermo module unit 14 is mounted on the surface of the cooler 9 on the storage chamber 2 side. The thermo module unit 14 includes a thermo module 15 composed of a thermoelectric cooling element (Peltier element),
A heat absorbing radiator 16 provided on the heat absorbing side of the thermo module 15 and a heat radiating radiator 17 provided on the heat radiating side of the thermo module 15. The side heat storage plates 19 are provided respectively.

The heat dissipating heat storage plate 19 of the heat dissipating radiator 17 is thermally conductively attached to the cooler 9. The heat dissipating heat storage plate 19 is provided in contact with the cooler 9. . Further, the area of the heat radiation side heat storage plate 19 is substantially the same as the area of contact with the cooler 9, whereby the heat radiation side heat storage plate 19 acts as a wind direction plate.

The thermo module unit 14
An inlet plate 20 for guiding the introduced air to the heat absorbing radiator 16 of the thermo module unit 14 is provided on the side of the thermo module 15, the heat radiation radiator 17, and the heat inlet side of the heat radiation side heat storage plate 19.

Further, the lower end of the suction port 7 of the partition plate 5 is provided with a heat absorbing radiator 1 of the thermo module unit 14.
A flow path switching damper 21 for switching the flow path to 6 and the flow path to the cooler 9 is provided. The flow path switching damper 21 is movable by an urging device 22 such as a solenoid. The flow path switching damper 21 may be moved by an electric motor or the like.

At the lower edge of the discharge port 6 of the partition plate 5, a flow path forming plate 23 is provided to prevent a short cycle in the heat exchange chamber 3. An opening / closing damper 24 that opens and closes a flow path to the heat-absorbing radiator 16 of the thermo-module unit 14 is provided at a portion ahead of the flow path forming plate 23.
Is provided. The opening / closing damper 24 is interlocked with the flow path switching damper 21.

The operation of the present invention will be described with the above structure. First, at the time of a normal cooling operation, the cooler 9 cools the storage chamber 2 and performs a refrigeration cycle together with the compressor 11 and the condenser 12. Make up.

At this time, the flow path switching damper 21 is
, And the opening / closing damper 24 is also in a solid line state. That is, the flow path switching damper 21 forms a flow path to the cooler 9, and the open / close damper 24 closes the flow path to the heat absorbing radiator 16.

When frost adheres to the cooler 9 and the cooling capacity is reduced, the operation shifts to a defrosting operation in order to remove the frost.

The transition to the defrosting operation may be performed periodically by, for example, a timer, or a chiller may be provided with a capacitance sensor or the like to detect frost adhesion.

When the operation shifts to the defrosting operation, the refrigeration cycle is the reverse of the cooling operation, that is, the hot gas discharged from the compressor 11 is directly introduced into the cooler 9.

At this time, the flow path switching damper 21 is
In the state shown by the dotted line. That is, the flow path switching damper 21
Is joined to the end of the introduction plate 20 to shut off the flow path to the cooler 9. At the same time, the opening / closing damper 24 is also in the state shown by the dotted line in FIG. 1, and the introduction path of the thermo module unit 14 to the heat absorbing radiator 16 is opened.

The opening / closing damper 24 may be movable in the direction opposite to the direction shown by the dotted line. In this case, a gap is formed between the heat absorption side heat storage plate 18 and the flow path forming plate 23. However, due to the characteristics of the Peltier element, the heat storage in the heat absorption side heat storage body 18 causes The temperature of the discharged cool air is stabilized.

Originally, a long-time defrosting operation is not desirable because the temperature of the storage room 2 may be increased. However, long-time defrosting may be required depending on the amount of frost. In such a case, a gap is formed between the heat absorption side heat storage plate 18 and the flow path forming plate 23, and a short cycle is generated around the heat absorption radiator 16, whereby the storage room 2 can be cooled stably. it can.

Then, the thermo module unit 14
Absorbs heat by the endothermic radiator 16 and releases the heat
Therefore, heat can be exchanged by the endothermic radiator 16 and the cooling of the storage room 2 can be continued. Further, since the heat radiation radiator 17 is attached to the cooler 9 by heat exchange via the heat radiation side heat storage plate 19, in addition to the above-described hot gas,
The heat radiation of the heat radiation radiator 17 promotes defrosting.

As described above, the cooling of the storage room 2 can be performed by the heat absorbing radiator 16 of the thermo module unit 14, and the defrosting of the cooler 9 is performed by the above-described hot gas and the heat radiation of the heat radiating radiator 17 of the thermo module unit 14. Can do it.

For this reason, it is possible to prevent the temperature of the storage room 2 from rising and to promote the defrosting, so that the defrosting operation in which the temperature of the storage room 2 may rise can be terminated early.

Although the above description has been made using a reverse cycle heat pump for defrosting, the switching valve and the compressor 1 are separately provided.
A heat pump using a bypass pipe or the like for flowing the hot gas from 1 directly to the cooler 9 may be used, or an electric heater or the like may be provided in the cooler 9 to perform defrosting by the electric heater. Furthermore, defrosting may be performed only by heat radiation of the thermo module 15.

The structure of the cooling storage 1 of the present invention described above is based on existing products as shown in FIGS. 2 to 4, for example, a high-grade confectionery showcase 61 shown in FIG. 2, and a commercial refrigerator (business) shown in FIG. (Freezer for use) 71 and the household refrigerator 81 shown in FIG.

A display room 62 shown in FIG. 2 is provided with a plurality of shelves 63 for displaying high-grade Western confectionery. Also,
A front transparent glass 67 formed into a curved surface is provided at the front of the display room 62, and the side transparent glass 6 is provided at a side end thereof.
In addition, a sliding door type heat insulating door 69 is provided on the back surface, and a heat insulating plate 66 made of a heat insulating material is provided on the top surface. Further, the display room 62 described above
The heat exchange chamber 3 in which the cooler 9 and the above-mentioned thermo-module unit 14 are housed is located below, and further below the compressor 11 which forms a refrigeration cycle together with the cooler 9 via a heat insulating material. , A condenser room 12 in which a condenser 12 and a condenser cooling blower 13 are accommodated.

A commercial refrigerator 71 shown in FIG. 3 includes a storage room 72 having a plurality of stages of net shelves 75 therein.
A heat-insulating box 73, a double door opening-type heat-insulating door 74 for opening and closing the front opening of the heat-insulating box 73, and a machine room 76 provided on the heat-insulating box 73. I have.

The machine room 76 is provided with a condenser 12, a refrigerant circulation pipe 10, and a compressor 11.

The heat exchange chamber 3 is provided at an upper portion in the heat insulating box 73, and inside the heat exchange chamber 3,
The cooler 9 and the thermo-module unit 1 that constitute a refrigeration cycle together with the compressor 11 and the condenser 12
4 are provided. The machine room 64 is provided with an electrical box 77 for controlling the thermo module unit 14.

The refrigerator 81 for household use shown in FIG. 4 is provided with a heat-insulating opening / closing door 82 which can be opened and closed in a refrigerating room formed in the upper part of the front surface, and three drawer doors 83, 84, 85 are provided below it. Of the drawer doors 83, 84, 85, the upper drawer door 83 is a vegetable room, the middle drawer door 84 is an ice temperature room, and the lower drawer door 85 is a freezing room. The vegetable room, ice room, and freezer room correspond to the storage room 2 in FIG.

Although not shown, the storage room 2 partitioned into a vegetable room, an ice room, and a freezing room communicates with a heat exchange room 3 provided on the back of the refrigerator 81 for home use. The exchange chamber 3 is provided with the cooler 9 and the thermo module unit 14 as described above.

Further, although not shown, a machine room provided with a compressor 11 and a condenser 12 constituting a refrigerating cycle together with the cooler 9 is formed at a lower rear portion of the household refrigerator 81. is there.

That is, according to the first aspect of the present invention, the cooler 9 for cooling the storage chambers 2, 62, 72 for storing the objects to be cooled, and the storage chamber 2, 62, 7
Thermo module 1 consisting of a thermoelectric cooling element that cools 2
5 provided with the cooling storages 1, 61, 71, 81.

As described above, when the cooler 9 is defrosted, the storage module 2 is cooled by the thermo module 15.

Therefore, even if the defrosting operation is performed, it is possible to prevent the temperature of the storage chambers 2, 62, 72 from rising as much as possible.

According to the second aspect of the present invention, the cooler 9 cools the storage chambers 2, 62, 72 for storing the objects to be cooled.
The cooling storages 1, 61, which are provided with a thermo-module 15 composed of a thermoelectric cooling element having a heat-dissipating side attached to the cooler 9 in a heat-conductive manner and having a heat-absorbing side on the storage rooms 2, 62, 72 side.
71, 81 are provided.

As described above, the thermo module 1 is attached to the cooler 9.
By attaching the heat radiating side of the thermoelectric module 5 to the heat radiating side, the defrosting of the cooler 9 can be performed by the heat radiating of the thermo module 15, and the storage chambers 2, 62, 72 can be cooled on the heat absorbing side.

Therefore, even if the defrosting operation is performed, the temperature rise of the storage chambers 2, 62, 72 can be prevented as much as possible, and the defrosting is performed by the heat radiation of the thermo module 15, or the defrosting is promoted. Can do things.

[0051]

As described above in detail, according to the first aspect of the present invention, a cooler for cooling a storage room for storing an object to be cooled, and the storage room is cooled when the cooler is defrosted. A cooling storage provided with a thermo module comprising a thermoelectric cooling element.

As described above, when the cooler is defrosted, the storage room is cooled by the thermo module.

Therefore, even if the defrosting operation is performed, the rise in the temperature of the storage room can be prevented as much as possible.

According to the second aspect of the present invention, a cooler for cooling a storage room for storing an object to be cooled, and a heat-radiating side heat-conductively attached to the cooler, the heat-absorbing side being the storage room side. A cooling storage provided with a thermo module comprising a thermoelectric cooling element.

As described above, by attaching the heat radiating side of the thermo module to the cooler in a thermally conductive manner, defrosting of the cooler can be performed by radiating heat of the thermo module, and the storage room is cooled on the heat absorbing side. You can do things.

Therefore, even if the defrosting operation is performed, the temperature rise in the storage room can be prevented as much as possible, and the defrosting can be performed by the heat radiation of the thermo module, or the defrosting can be promoted.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a cooling storage according to the present invention.

FIG. 2 is a perspective view of a high-end confectionery showcase using the present invention.

FIG. 3 is a perspective view of a commercial refrigerator or freezer using the present invention.

FIG. 4 is a front view of a household refrigerator using the present invention.

FIG. 5 is a conceptual diagram of a cooling storage according to the related art.

[Description of Signs] 1 Cooling storage 2 Storage room 9 Cooler 15 Thermo module

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroyuki Umezawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. F-term (reference) 3L045 AA01 AA02 AA04 AA07 BA01 CA02 DA02 DA04 EA01 GA07 HA01 LA14 LA17 MA12 NA17 PA04 3L046 AA02 AA07 BA01 CA04 DA00 GA01 GA04 JA15 LA00 MA04

Claims (2)

[Claims] 1. A cooling device for cooling a storage room for storing an object to be cooled, and a thermo module comprising a thermoelectric cooling element for cooling the storage room when the cooler is defrosted. And cooling storage. 2. A thermo-module comprising a cooler for cooling a storage room for storing an object to be cooled, and a thermoelectric cooling element having a heat-radiating side attached to the cooler and having a heat-absorbing side as the storage room side. And a cooling storage.