JP6723501B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator that stores food and drink, and more particularly to an electronic cooling refrigerator that uses a thermoelectric module.

Conventionally, an electronic cooling type refrigerator using a thermoelectric module including a Peltier element or the like is known. Since this type of refrigerator is quiet, it is used not only for general households but also for guest rooms of hotels and hospital rooms. For example, Patent Document 1 has a heat insulating container having a front opening, a front door that can be opened and closed to close the front surface of the heat insulating container, and has a thermo module composed of a Peltier element on the rear wall of the heat insulating container. The warehouse is disclosed.

In addition, since the refrigerator using the thermoelectric module is small and lightweight, it is used as a portable or mobile compact cold/heat storage box for leisure or vehicle use. For example, Patent Document 2 discloses a portable small electronic refrigerator using a Peltier element, which has a box-type refrigerator main body with an open upper surface and a lid body that is detachably covered on the open portion. .. The document describes an example in which a cooling unit including a Peltier element is incorporated in the lid, and an example in which the cooling unit is provided on a side wall of the refrigerator body.

Further, in the same document, a case is provided to partition the interior of the electronic refrigerator into a low-temperature refrigerating room and a high-temperature refrigerating room, and a cold heat section cooled by a Peltier element is exposed to the low-temperature refrigerating room, thereby It is described that it is divided into two temperature regions.

Further, for example, it is known to cool a plurality of rooms having different storage temperatures by using a plurality of thermoelectric devices such as the cooling device described in Patent Document 3. The cooling device disclosed in the document includes an upper refrigerating chamber, a lower freezing chamber, a thermoelectric device that cools the refrigerating chamber, and a thermoelectric device that cools the freezing chamber. The thermoelectric device that cools the refrigerating compartment is provided on the inner wall surface of the refrigerating compartment, and the thermoelectric device that cools the freezing compartment is provided on the partition wall between the refrigerating compartment and the freezing compartment.

JP, 2014-85087, A JP, 11-63771, A JP, 2005-16783, A

However, in the configuration in which the thermoelectric module is provided at one location on the rear wall of the heat insulating container as in the prior art described in Patent Document 1, the inside of the storage chamber is at substantially the same temperature, and thus a plurality of different types are used. It was difficult to store foods and the like at different temperatures suitable for each.

Further, as in the prior art disclosed in Patent Document 2, in a configuration in which a case for partitioning the inside of the refrigerator is provided and both the low temperature refrigerating compartment and the high temperature refrigerating compartment are cooled by one cooling unit, two storage temperatures are different. There was room to improve the cooling performance in order to maintain the refrigerating compartments at their respective suitable temperatures.

Further, as in the conventional technique disclosed in Patent Document 3, in the configuration in which the thermoelectric devices are provided on the inner wall surface and the partition wall of the refrigerating chamber, respectively, there is a problem that the volume of the storage chamber for storing food and the like becomes small. there were. Further, as in the prior art disclosed in Patent Documents 1 to 3, in the configuration in which the thermoelectric module is arranged on the side wall of the storage chamber or the like, a space for arranging a heat sink, a fan, etc. attached to the thermoelectric module is secured. Therefore, the depth or width of the storage chamber becomes narrow.

Further, as in the prior arts disclosed in Patent Document 1 and Patent Document 3, with the configuration in which the front surface of the heat insulating box is opened, it is not easy to take in and take out food and the like in a small refrigerator having a low height. In addition, a refrigerator having an open front has a problem that cold air easily leaks when the door is opened.

Further, as in the conventional technique disclosed in Patent Document 2, in the configuration in which the cooling unit is incorporated in the lid body that covers the upper surface of the refrigerator main body, the lid body becomes heavy and the opening and closing thereof is hindered, and the impact due to the opening and closing is also caused. The cooling unit may be damaged due to such reasons. Further, in a refrigerator having an open top surface, dew condensation water or the like is likely to accumulate on the bottom surface of the storage chamber, and it has been difficult to discharge the moisture or the like out of the storage chamber or to clean the bottom surface of the storage chamber.

The present invention has been made in view of the above circumstances, and an object thereof is to efficiently cool the inside of a storage chamber in different temperature zones, and to favor objects to be cooled with different storage temperatures. An object of the present invention is to provide an electronic cooling type refrigerator that can be stored.

In addition, another object of the present invention is electronic cooling that can secure a large storage volume, can easily put in and take out food and the like, and can easily discharge dew condensation water and clean the storage chamber. The purpose is to provide a refrigerator.

The refrigerator of the present invention includes an insulating box body having a storage chamber formed therein, and an electronic cooling unit attached to the insulating box body, wherein the electronic cooling unit is an outside air flow connected to the outside of the insulating box body. A heat sink for heat radiation provided in a path, an outside fan for circulating outside air in the outside air circulation path, a heat sink for heat absorption provided in a cold air circulation path connected to the storage chamber, and an inside for circulating air in the cold air circulation path A fan, a first thermoelectric module having a heat dissipation surface connected to the heat dissipation heat sink and an endothermic surface connected to the heat absorption heat sink, and a cooling plate having a heat dissipation surface connected to the heat absorption heat sink and facing the storage chamber. a second thermoelectric module absorbing surface is connected, the possess, the second thermoelectric module, wherein provided above the first thermoelectric module, the cold air circulation route, said first thermoelectric module Is formed so as to be inserted between the heat absorption surface of the second thermoelectric module and the heat dissipation surface of the second thermoelectric module, the electronic cooling unit is mounted below the storage chamber, and the cooling plate is a bottom surface of the storage chamber. It is characterized by constituting a part of .

Further, the refrigerator of the present invention includes an insulating box body having a storage chamber formed therein, and an electronic cooling unit attached to the insulating box body, and the electronic cooling unit is connected to the outside of the insulating box body. A heat sink for heat radiation provided in the outside air circulation path, an outside fan for circulating the outside air in the outside air circulation path, a heat sink for heat absorption provided in the cold air circulation path connected to the storage chamber, and air circulation in the cold air circulation path. An internal fan, a first thermoelectric module having a heat dissipation surface connected to the heat dissipation heat sink and a heat absorption surface connected to the heat absorption heat sink, and a heat dissipation surface connected to the heat absorption heat sink facing the storage chamber. A second thermoelectric module having a heat absorbing surface connected to the cooling plate, the second thermoelectric module being mounted below the storage chamber, the cooling plate constituting a part of a bottom surface of the storage chamber, and It is characterized in that an edge portion that rises upward is formed in the periphery .

Further, the refrigerator of the present invention includes an insulating box body having a storage chamber formed therein, and an electronic cooling unit attached to the insulating box body, and the electronic cooling unit is connected to the outside of the insulating box body. A heat sink for heat dissipation provided in the outside air circulation path, an outside fan for circulating outside air through the outside air circulation path, a heat sink for heat absorption provided in the cold air circulation path connected to the storage chamber, and air circulation through the cold air circulation path. An internal fan, a first thermoelectric module having a heat radiating surface connected to the heat radiating heat sink and a heat absorbing surface connected to the heat absorbing heat sink, and a heat radiating surface connected to the heat absorbing heat sink facing the storage chamber. A second thermoelectric module having a heat absorption surface connected to a cooling plate; and the heat insulating box body has an upper surface opening, and the heat insulating box body is provided with a heat insulating lid for opening and closing the opening. It is characterized by

Further, in the refrigerator of the present invention, the first thermoelectric module and the second thermoelectric module are arranged such that the heat radiating surfaces or the heat absorbing surfaces thereof are parallel to each other.

Further, in the refrigerator of the present invention, the electronic cooling unit is detachably attached to the heat insulating box.

According to the refrigerator of the present invention, the electronic cooling unit attached to the heat insulation box includes a heat dissipation heat sink provided in an outside air circulation path connected to the outside of the heat insulation box and an outside fan for circulating outside air through the outside air circulation path. A heat sink for heat absorption provided in a cold air circulation path connected to the storage chamber; a fan inside the chamber for circulating air in the cold air circulation path; and a heat dissipation surface connected to the heat dissipation heat sink so that the heat absorption surface has a heat absorption surface. It has a 1st thermoelectric module connected, and a 2nd thermoelectric module whose heat dissipation surface is connected to the said heat sink for heat absorption, and a heat absorption surface is connected to the cooling plate which faces the said storage chamber. With such a configuration, the air flowing through the cold air circulation path is cooled by the heat sink for heat absorption cooled by the first thermoelectric module, and the cooled air is supplied to the storage chamber to cool the storage chamber. Further, the vicinity of the cooling plate in the storage chamber is further cooled to a lower temperature by the cooling plate cooled to a temperature lower than that of the heat sink for heat absorption by the second thermoelectric module. That is, the refrigerator of the present invention can efficiently cool the inside of the storage chamber in different temperature zones, and can appropriately store different types of objects to be cooled at storage temperatures suitable for each.

Further, according to the present invention, the electronic cooling unit is attached below the storage chamber, and the cooling plate constitutes a part of a bottom surface of the storage chamber. By mounting the electronic cooling unit below the storage chamber, the position of the storage chamber is raised, so that even a small refrigerator can easily take in and out foodstuffs stored in the storage chamber. Further, since it is not necessary to secure a space for disposing the electronic cooling unit on the side wall of the storage chamber, it is possible to secure a large depth or width of the storage chamber.

Further, since the cooling plate constitutes a part of the bottom surface of the storage chamber, it is possible to place foods or the like to be stored at low temperature directly on the cooling plate and efficiently cool them by utilizing heat conduction. .. Further, since the cooling plate is on the bottom surface, cold air can be stored near the bottom surface of the storage chamber, and the vicinity of the cooling plate can be maintained at a low temperature.

Further, according to the present invention, an edge portion that rises upward is formed around the cooling plate. Thereby, the moisture in the storage chamber can be collected on the upper surface of the cooling plate due to dew condensation, frosting, or the like, and the moisture can be collected on the upper surface of the cooling plate, so that the moisture can be easily discharged.

Further, according to the present invention, the first thermoelectric module and the second thermoelectric module are arranged such that the heat radiating surface or the heat absorbing surface is parallel to each other. As a result, the electronic cooling unit becomes smaller, and a large storage volume in the storage chamber can be secured.

Further, according to the present invention, an upper surface of the heat insulating box body is opened, and the heat insulating box body is provided with a heat insulating lid for opening and closing the opening. This facilitates the taking in and out of food and the like stored in the refrigerator. Also, there is little leakage of cold air when the heat insulating lid is opened.

Further, according to the present invention, the electronic cooling unit is detachably attached to the heat insulating box. This facilitates work such as discharging dew condensation water and cleaning the storage room. In addition, maintenance of the electronic cooling unit is facilitated.

It is a figure which shows the outline of the cooling system of the refrigerator which concerns on embodiment of this invention. It is a front sectional view of a refrigerator concerning an embodiment of the present invention. It is a right side sectional view of a refrigerator concerning an embodiment of the present invention. It is a perspective view of the electronic cooling unit of the refrigerator which concerns on embodiment of this invention. It is a figure which shows the electronic cooling unit of the refrigerator which concerns on embodiment of this invention, and is a perspective view of the state which removed the cooling plate. It is a figure which shows the electronic cooling unit of the refrigerator which concerns on embodiment of this invention, and is a perspective view of the state which removed the uppermost base member. It is a figure which shows the electronic cooling unit of the refrigerator which concerns on embodiment of this invention, and is a perspective view which removes the lowest base member and shows the attachment state of a fan outside a warehouse and a heat sink for heat radiation.

Hereinafter, a refrigerator according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing an outline of a cooling system of a refrigerator 1 according to the embodiment of the present invention. As shown in FIG. 1, the refrigerator 1 has an electronic cooling unit 10 for cooling a storage room 7 that stores food and the like.

The electronic cooling unit 10 is an electronic cooling type cooling unit having two thermoelectric modules, that is, a first thermoelectric module 11 and a second thermoelectric module 12. The first thermoelectric module 11 and the second thermoelectric module 12 are, for example, substantially plate-shaped thermo modules composed of Peltier elements.

A direct current is caused to flow through the Peltier element forming the first thermoelectric module 11 in a predetermined direction, whereby heat is transferred from one main surface of the first thermoelectric module 11 to the other main surface by the Peltier effect. The second thermoelectric module 12 functions similarly. In the following description, the one main surface that absorbs heat when it becomes a low temperature when a direct current power source of a predetermined polarity is connected is referred to as a heat absorbing surface, and the other main surface that dissipates heat when becoming a high temperature is a heat dissipation surface. Say

The refrigerator 1 connects the electronic cooling unit 10 and the storage chamber 7 to cool the storage chamber 7 by forced circulation, and connects the electronic cooling unit 10 and the outside of the refrigerator 1 to the storage chamber 7. And an outside air circulation path 30 for releasing the taken heat to the outside.

The heat sink 14 for heat absorption and the internal fan 17 are provided in the cold air circulation path 31 of the electronic cooling unit 10. On the other hand, a heat sink 13 for heat radiation and an outside fan 16 are provided in the outside air circulation path 30 of the electronic cooling unit 10. The first thermoelectric module 11 is provided between the heat sink 14 for heat absorption and the heat sink 13 for heat dissipation.

Specifically, the heat sink 14 for heat absorption is connected to the heat absorption surface of the first thermoelectric module 11 so that heat can be conducted, and the heat sink 13 for heat dissipation can be conducted to the heat dissipation surface of the first thermoelectric module 11. Connected. As a result, heat is transferred from the heat sink 14 for heat dissipation to the heat sink 13 for heat dissipation by the action of the first thermoelectric module 11.

The heat sink 14 for heat absorption is formed of, for example, a metal having good thermal conductivity such as aluminum or copper, is cooled by the first thermoelectric module 11, and exchanges heat with the air flowing through the cold air circulation path 31. Cool the air.

The internal fan 17 is, for example, an axial blower or the like, and circulates air through the cool air circulation path 31. That is, when the internal fan 17 is driven, the cool air cooled by the heat sink 14 for heat absorption is supplied to the storage chamber 7, and the storage chamber 7 is kept cool at a suitable temperature.

The heat radiating heat sink 13 is formed of, for example, a metal having good thermal conductivity such as aluminum or copper, is heated by the first thermoelectric module 11, and is air from the outside air circulation path 30, that is, from the outside of the refrigerator 1. It exchanges heat with the introduced outside air and radiates heat.

The outside fan 16 is, for example, a centrifugal blower such as a sirocco fan, and introduces the outside air into the outside air circulation path 30 to circulate it. As a result, the heat radiation heat sink 13 is cooled, and the heat radiated from the heat radiation heat sink 13 is released to the outside of the refrigerator 1.

The heat radiation surface of the second thermoelectric module 12 is thermally conductively connected to the heat sink 14 for heat absorption. Further, the heat absorption surface of the second thermoelectric module 12 is connected to the cooling plate 15 facing the storage chamber 7 via the heat sink 18 so that heat can be conducted. The cooling plate 15 and the heat sink 18 may be formed of a metal having good thermal conductivity such as aluminum and the like, and may be integrally formed.

When the second thermoelectric module 12 is energized, heat is transferred from the cooling plate 15 to the heat sink 14 for heat absorption. That is, the cooling plate 15 is cooled to a temperature lower than that of the heat sink 14 for heat absorption by the second thermoelectric module 12. As a result, the cooling plate 15 cools the vicinity of the cooling plate 15 in the storage chamber 7 to a temperature lower than that of the other regions of the storage chamber 7.

That is, the refrigerator 1 efficiently cools the inside of the storage chamber 7 in different temperature zones by the cooling by the first thermoelectric module 11 and the two-stage cooling by the first thermoelectric module 11 and the second thermoelectric module 12. Can be cooled. For example, by appropriately selecting the first thermoelectric module 11 and the second thermoelectric module 12, both the cooling in the refrigerating temperature range and the cooling in the freezing temperature range can be realized simultaneously by one electronic cooling unit 10. In this way, in the refrigerator 1, different types of objects to be cooled can be preferably stored at storage temperatures suitable for the respective objects.

FIG. 2 is a front sectional view showing a schematic structure of the refrigerator 1, and FIG. 3 is a right side sectional view showing a schematic structure of the refrigerator 1. As shown in FIG. 2 and FIG. 3, the refrigerator 1 includes a vertically elongated, substantially box-shaped heat insulating box body 2 having an open top surface. The heat insulating box body 2 has an outer box 3 formed of synthetic resin or a steel plate, and an inner box 4 formed of synthetic resin or the like and provided inside the outer box 3.

A space between the outer box 3 and the inner box 4 is filled with a heat insulating material 5 made of, for example, foamed polyurethane. As the heat insulating material 5, a vacuum heat insulating material, a heat insulating member made of expanded polystyrene or the like may be used in combination.

A storage chamber 7 for storing food and drink is formed inside the heat insulating box 2. A heat insulating lid 6 is attached to the open upper surface of the heat insulating box 2 so as to be openable and closable. Specifically, the heat insulating lid 6 has a heat insulating structure similar to that of the heat insulating box body 2, is formed into a substantially rectangular plate shape, and one side thereof is rotatable near the edge of the upper opening of the heat insulating box body 2. Supported by.

In this way, the heat insulating box 2 is formed to be vertically long and has an upper surface opened, so that food and the like stored in the refrigerator 1 can be easily taken in and out. That is, even if the refrigerator 1 is formed in a relatively small size, the user can easily take in and out food and the like from above the refrigerator 1 without bending down to a lower position. Further, there is little leakage of cold air from the inside of the storage chamber 7 to the outside when the heat insulating lid 6 is opened for taking in and out food and the like.

An electronic cooling unit 10 is attached below the storage chamber 7. As described above, the electronic cooling unit 10 has the first thermoelectric module 11 and the second thermoelectric module 12, and cools the storage chamber 7. The electronic cooling unit 10 constitutes the bottom surface of the storage chamber 7. Specifically, the uppermost base member 24 provided on the upper portion of the electronic cooling unit 10 and the cooling plate 15 provided on the upper portion thereof face the storage chamber 7 and serve as the bottom surface of the storage chamber 7.

As described above, since the electronic cooling unit 10 is attached to the lower side of the storage chamber 7, the position of the storage chamber 7 becomes higher. Therefore, even if the refrigerator 1 is small, the food and the like stored in the storage chamber 7 can be taken in and out. Will be easier. Further, since it is not necessary to secure a space for disposing the electronic cooling unit 10 on the side wall of the storage chamber 7, it is possible to secure a large depth or width of the storage chamber 7.

Further, the first thermoelectric module 11 and the second thermoelectric module 12 of the electronic cooling unit 10 are arranged such that the heat radiating surfaces or the heat absorbing surfaces thereof are parallel to each other. As a result, the electronic cooling unit 10 becomes smaller, and a large storage volume of the storage chamber 7 can be secured.

Further, as described above, the cooling plate 15 cooled to a low temperature by the second thermoelectric module 12 constitutes a part of the bottom surface of the storage chamber 7. Therefore, foods or the like to be stored at a low temperature can be placed directly on the cooling plate 15 and the heat conduction can be utilized to efficiently cool those foods or the like.

Further, since the low-temperature cooling plate 15 is on the bottom surface of the storage chamber 7, cold air can be stored near the bottom surface of the storage chamber 7, and the vicinity of the cooling plate 15 can be maintained at a low temperature. As a result, different temperature regions can be efficiently formed inside the storage chamber 7. It should be noted that a storage container, a shelf, or the like (not shown) may be provided as a partition body for partitioning the storage area inside the storage chamber 7.

Further, around the cooling plate 15, an edge portion 15a that is raised upward is formed. As a result, moisture in the storage chamber 7 can be collected on the upper surface of the cooling plate 15 due to dew condensation, frost formation, etc., and the moisture can be collected on the upper surface of the cooling plate 15. Therefore, the water can be easily discharged.

A caster 35 is attached to the lower part of the refrigerator 1 so as to be turnable. Further, a retractable handle 36 protruding upward is provided on the back side of the refrigerator 1. These facilitate the movement of the refrigerator 1 and improve the convenience.

The electronic cooling unit 10 is vertically stacked to form a cold air circulation path 31 and an outside air circulation path 30, and four base members 21 that support components such as the first thermoelectric module 11 and the second thermoelectric module 12. -24.

That is, a part of the cold air circulation path 31 is formed by the uppermost base member 24 and the lower base member 23. As described above, the uppermost base member 24 constitutes the bottom surface of the storage chamber 7. Further, the base member 21 in the lowermost stage and the base member 22 in the uppermost stage form a part of the outside air circulation path 30.

As shown in FIG. 2, the heat insulating box body 2 is formed with an air passage 8 and an air passage 9 that connect the electronic cooling unit 10 and the storage chamber 7. Specifically, the electronic cooling unit 10 is provided with a duct member 25 and a duct member 26 that serve as the cool air circulation path 31, the duct member 25 is connected to the air passage 8 of the heat insulating box 2, and the duct member 26 is , Is connected to the air passage 9 of the heat insulating box 2. Thereby, the cold air circulation path 31 for circulating the air between the storage chamber 7 and the electronic cooling unit 10 is formed.

As shown in FIG. 2, a large number of substantially plate-shaped fins that extend substantially vertically and extend in the width direction of the refrigerator 1 are formed in parallel on the heat sink 14 and the heat sink 13 for heat dissipation. The gap between these fins becomes a part of the cold air circulation path 31 or the outside air circulation path 30 and serves as a flow path of air.

The electronic cooling unit 10 is detachably attached to the heat insulating box 2. Specifically, the electronic cooling unit 10 is mounted by sliding from the back side of the refrigerator 1, that is, from the rear to the front, and is fixed by a bolt, an engaging claw, or the like (not shown).

Further, a grip 27 is provided at the rear of the electronic cooling unit 10, and the electronic cooling unit 10 can be easily pulled out by releasing the fixing portions such as the bolts described above and pulling the grip 27 rearward. it can. This facilitates work such as discharging dew condensation water and cleaning the inside of the storage chamber 7. Further, maintenance of the electronic cooling unit 10 and the like become easy.

FIG. 4 is a perspective view of the electronic cooling unit 10 of the refrigerator 1. As shown in FIG. 4, the electronic cooling unit 10 can be removed from the heat insulating box 2 (see FIG. 1) in a state where the electronic cooling unit 10 is integrally assembled.

The electronic cooling unit 10 has a unit cover 20 exposed on the back surface of the refrigerator 1. The above-mentioned base members 21 to 24 that support each component are fixed to each other by a fixture such as a bolt and are also fixed to the unit cover 20. The unit cover 20 and the base members 21 to 24 are each made of synthetic resin or the like.

The cooling plate 15 is provided on the uppermost base member 24 of the electronic cooling unit 10. As described above, the base member 24 and the cooling plate 15 form the bottom surface of the storage chamber 7. By removing the base member 24 and the cooling plate 15 integrally with the electronic cooling unit 10, cleaning or the like is easy.

FIG. 5 is a perspective view showing the electronic cooling unit 10 of the refrigerator 1, and shows a state in which the cooling plate 15 and the heat sink 18 are removed for the sake of explanation. As shown in FIG. 5, a recess 24 a to which the cooling plate 15 is attached is formed on the upper surface of the uppermost base member 24.

In addition, a through hole 24b into which the heat sink 18 (see FIG. 2) as a heat conducting member is attached is formed at approximately the center of the recess 24a. Below the through hole 24b, the second thermoelectric module 12 (see FIG. 6) that is connected to the heat sink 18 in a heat conductive manner is provided.

FIG. 6 is a view showing the electronic cooling unit 10 of the refrigerator 1, and is a perspective view showing a state in which the uppermost base member 24 (see FIG. 5) is removed. As shown in FIG. 6, below the uppermost base member 24, a part of the cool air circulation path 31 is defined by the base member 23. The heat sink 14 for heat absorption and the internal fan 17 are arranged in the cold air circulation path 31.

The heat sink 14 for heat absorption has its upper surface connected to the heat radiating surface of the second thermoelectric module 12 arranged above so as to be able to conduct heat, and its lower surface has the first thermoelectric module 11 arranged below (Fig. 2). (See) the heat-absorbing surface so that heat can be conducted.

Further, the duct member 25 and the duct member 26 are attached to the base member 23 near both ends in the extending direction of the cold air circulation path 31, respectively. As described above, the duct member 25 and the duct member 26 constitute a part of the cool air circulation path 31, and the air passage 8 (see FIG. 2) and the air passage 9 (see FIG. 2) of the heat insulating box 2 (see FIG. 2). ) Is connected to.

FIG. 7 is a perspective view of the electronic cooling unit 10 of the refrigerator 1 as viewed from diagonally below. In FIG. 7, for the sake of explanation, the lowest base member 21 (see FIG. 4) is removed so that the external fan 16 and the heat sink 13 for heat dissipation can be seen.

As shown in FIG. 7, an outside air circulation path 30 is formed between the lower base member 21 and the upper base member 22. As described above, the heat sink 13 for heat radiation and the outdoor fan 16 are arranged in the outside air circulation path 30.

As described above, the upper surface of the heat sink 13 for heat dissipation is connected to the heat dissipation surface of the first thermoelectric module 11 (see FIG. 2) arranged above the heat sink 13 so that heat can be conducted. In addition, through holes are formed in the base member 22 and the base member 23 (see FIG. 6) on the upper stage thereof so as to correspond to locations where the first thermoelectric module 11 is disposed.

As described above, since the electronic cooling unit 10 is compactly assembled, a large storage volume of the storage chamber 7 can be secured. In addition, the cooling plate 15 shown in FIG. 4 may be provided with a discharge hole for discharging condensed water and the like. Further, the electronic cooling unit 10 may include a drain tank connected to the discharge hole. With such a configuration, it becomes easier to discharge condensed water and the like.

In addition, in the first thermoelectric module 11 and the second thermoelectric module 12, the polarities of the applied DC voltages are reversed, so that the heat flow directions are reversed. Therefore, the refrigerator 1 may have a function as a heat-retaining box that heats foods and drinks and keeps them warm.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Insulation box body 6 Insulation lid 7 Storage room 8 Air passage 9 Air passage 10 Electronic cooling unit 11 First thermoelectric module 12 Second thermoelectric module 13 Heat sink for heat dissipation 14 Heat sink for heat absorption 15 Cooling plate 15a Edge 16 Storage Outside fan 17 Inside fan 18 Heat sink 20 Unit cover 21, 22, 23, 24 Base member 25, 26 Duct member 30 Outside air circulation path 31 Cold air circulation path

Claims (5)

An insulating box body inside which a storage chamber is formed,
An electronic cooling unit attached to the heat insulating box,
The electronic cooling unit,
A heat sink for heat dissipation provided in an outside air circulation path connected to the outside of the heat insulating box,
An outside-compartment fan that circulates outside air in the outside-air circulation path,
A heat sink for heat absorption provided in a cold air circulation path connected to the storage chamber,
An internal fan that circulates air in the cold air circulation path,
A first thermoelectric module having a heat radiating surface connected to the heat radiating heat sink and having a heat absorbing surface connected to the heat absorbing heat sink;
Have a, a second thermoelectric module absorbing surface is connected to the cooling plate facing the storage compartment heat radiating surfaces connected to the heat absorbing heat sink,
The second thermoelectric module is provided above the first thermoelectric module,
The cold air circulation path is formed so as to be inserted between the heat absorption surface of the first thermoelectric module and the heat dissipation surface of the second thermoelectric module,
The electronic cooling unit is mounted below the storage chamber,
The refrigerator is characterized in that the cooling plate constitutes a part of a bottom surface of the storage chamber . An insulating box body inside which a storage chamber is formed,
An electronic cooling unit attached to the heat insulating box,
The electronic cooling unit,
A heat sink for heat dissipation provided in an outside air circulation path connected to the outside of the heat insulating box,
An outside-compartment fan that circulates outside air in the outside-air circulation path,
A heat sink for heat absorption provided in a cold air circulation path connected to the storage chamber,
An internal fan that circulates air in the cold air circulation path,
A first thermoelectric module having a heat radiating surface connected to the heat radiating heat sink and having a heat absorbing surface connected to the heat absorbing heat sink;
Have a, a second thermoelectric module absorbing surface is connected to the cooling plate facing the storage compartment heat radiating surfaces connected to the heat absorbing heat sink, mounted below the storage compartment,
The cooling plate constitutes a part of the bottom surface of the storage chamber,
The refrigerator is characterized in that an edge portion that rises upward is formed around the cooling plate . An insulating box body inside which a storage chamber is formed,
An electronic cooling unit attached to the heat insulating box,
The electronic cooling unit,
A heat sink for heat dissipation provided in an outside air circulation path connected to the outside of the heat insulating box,
An outside-compartment fan that circulates outside air in the outside-air circulation path,
A heat sink for heat absorption provided in a cold air circulation path connected to the storage chamber,
An internal fan that circulates air in the cold air circulation path,
A first thermoelectric module having a heat radiating surface connected to the heat radiating heat sink and having a heat absorbing surface connected to the heat absorbing heat sink;
Have a, a second thermoelectric module absorbing surface is connected to the cooling plate facing the storage compartment heat radiating surfaces connected to the heat absorbing heat sink,
The heat insulating box has an open upper surface,
The refrigerator, wherein the heat insulation box body is provided with a heat insulation lid for opening and closing the opening . 4. The first thermoelectric module and the second thermoelectric module are arranged such that the heat radiating surfaces or the heat absorbing surfaces thereof are parallel to each other. Refrigerator according to item. The refrigerator according to any one of claims 1 to 4 , wherein the electronic cooling unit is detachably attached to the heat insulating box.

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