JP2006200785A - Cooling/warming storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce power consumption in accompany with cooling/warming operation of a cooling/warming storage applying thermoelectric converting devices. <P>SOLUTION: A heat exchange face is made to act as a heat absorbing face 1a and a heat generating face 1b by allowing electric current to flow to a first thermoelectric converting device 1. The heat generating face 1b and a second heat exchanger 3 are thermally connected with each other, and a third heat exchanger 15 is cooled by cold airflow from an air conditioner 11, thus a heat absorbing face 14a of a second thermoelectric converting device 14 is cooled and a temperature is decreased. Further the airflow overheated by the second heat exchanger 3 flows to a discharge air trunk 6, and a fourth heat exchanger 16 is overheated, thus a heat generating face 14b of the second thermoelectric converting device 14 is heated, and a temperature is increased. By their synergetic effect, the temperature difference of the heat exchange face of the second thermoelectric converting device 14 is increased, and the power can be efficiently generated in the second thermoelectric converting device 14, thus the utility power for operating the cooling/warming storage can be reduced by supplying the generated electricity to the first thermoelectric converting device 1 and a blower fan 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cold / hot storage for storing articles such as food and drinks and medicines, and more particularly to a cold / hot storage used in a living space equipped with air conditioning equipment such as a vehicle or personal space.

  Conventionally, as this kind of cold / hot storage, what cools or heats the internal container comprised with the material excellent in thermal conductivity with a thermoelectric conversion element (for example, refer patent document 1).

  FIG. 2 is a cross-sectional view of a cold / hot storage showing a conventional example described in Patent Document 1. As shown in FIG.

  As shown in FIG. 2, a conventional cold / hot storage includes a main body case 101 having an opening, a heat conduction container 102 having an opening disposed inside the main body case 101, and the main body case 101 and the heat conduction container. A heat insulating material 103 filled between 102, a lid member 104 that opens and closes an opening of the main body case 101 and is filled with the heat insulating material 103, a thermoelectric conversion device 105 having a heat absorbing surface 105a and a heat generating surface 105b, A heat exchanger 106 thermally connected to the heat generating surface 105b, a fan 108 for blowing an air flow to the heat exchanger 106 so as to cool or heat the heat conduction container 102, and a lid through an elastic member 109 The heat conduction member 110 that can be thermally coupled to the heat conduction container 102 provided on the member 104 is configured.

  When the internal space is cooled, first, the thermoelectric conversion device 105 is energized to cool the heat absorption surface 105a of the thermoelectric conversion device 105, the heat conduction container 102 is cooled, and the internal space is cooled. On the other hand, the other heat generating surface 105 b of the thermoelectric conversion device 105 generates heat, heat is transmitted to the heat exchanger 106, and is forcibly radiated by the blower fan 108.

On the contrary, when heating the internal space, first, the heat absorption surface 105a of the thermoelectric conversion device 105 is heated by energizing the thermoelectric conversion device 105 so that the polarity is opposite to that when the thermoelectric conversion device 105 is cooled. Heat is transferred to the container 102 and the internal space is heated. On the other hand, the heat generating surface 105 b of the thermoelectric conversion device 105 absorbs heat and takes heat from the air blown by the blower fan 108 through the heat exchanger 106.
JP-A-8-100755

  However, in the above-described conventional configuration, when the storage space is cooled or heated by energizing the thermoelectric conversion device 105, it is necessary to energize electricity, and there is a disadvantage that the power consumption for operating the cold storage cannot be reduced. there were.

  Further, since heat exchange is performed by forcibly blowing air to the heat exchanger 106 with the blower fan 108, the heat exchange capacity of the heat exchanger 106 is reduced unless electricity is always applied. There was a drawback that the amount could not be reduced.

  In order to solve the above conventional problems, the cold storage room of the present invention includes a first heat exchange device having a heat exchange surface for cooling or heating a storage space inside the box, and an anti-storage space in the box. And a wind circuit facing a heat exchange surface on the anti-storage space side in the first heat exchange device, and in the wind circuit, heat on the anti-storage space side in the first heat exchange device A second heat exchanging device in which a heat exchanging part that absorbs heat or dissipates heat is disposed at a position sandwiching the exchanging surface, and an air blowing means that blows temperature-controlled air in the wind circuit.

  Thereby, the heat exchange surface of the non-storage side space of the first heat exchange device that cools or heats the storage space exchanges heat with the temperature-controlled air in the wind circuit. Further, the temperature-controlled air promotes the endothermic action or heat release action of the first heat exchange device depending on its temperature.

  Further, in the second heat exchange device, the heat absorbing action and the heat releasing action are promoted by the temperature-controlled air of the wind circuit. This leads to greatly drawing out the power generation capacity of the second heat exchange device.

  The present invention solves the above-described conventional problems, and generates power by making a temperature difference between both surfaces of the second thermoelectric conversion device, and supplies the generated electricity to the first thermoelectric conversion device and the blower fan. To provide a cold storage room that can reduce power supplied from the outside.

  Invention of Claim 1 is comprised in the anti-storage-space side in the 1st heat exchange device which comprises the heat exchange surface which cools or heats the storage space inside a box, and is the said box, and said 1st A heat circuit facing the heat storage surface on the side opposite to the storage space in the heat exchange device 1 and heat absorption at a position sandwiching the heat exchange surface on the side opposite to the storage space in the first heat exchange device in the wind circuit. Or the 2nd heat exchange device which has arrange | positioned the heat exchange part which thermally radiates, and the ventilation means which ventilates temperature control air in the said wind circuit are provided.

  With this configuration, the heat exchange surface of the non-storage side space of the first heat exchange device that cools or heats the storage space exchanges heat with the temperature-controlled air in the wind circuit, and the temperature-controlled air Depending on the temperature, the heat absorption effect or heat dissipation effect of the first heat exchange device is promoted. In the second heat exchange device, the heat absorbing action and the heat releasing action are promoted by the temperature-controlled air of the wind circuit. This serves to draw out the power generation capability of the second heat exchange device.

  According to a second aspect of the present invention, there is provided a box having a storage space therein, and a first thermoelectric conversion device having a heat absorption surface or a heat generation surface on at least one surface of the box, wherein one of the heat absorption surfaces is provided. A first heat exchanger that is thermally connected to the storage chamber, a second heat exchanger that is thermally connected to the heat generating surface, a temperature adjusting means that adjusts the temperature, and the second heat exchanger. An air conditioner blowout air passage through which the temperature-controlled airflow from the temperature adjusting means flows into the heat exchanger, and a discharge airflow passage through which the temperature-controlled airflow is discharged from the second heat exchanger to the outside. A second thermoelectric conversion device having an endothermic surface and a heat generating surface is provided on each wall surface of the passage and the exhaust air passage, and a third thermoelectric device that is thermally connected to the endothermic surface and provided in the air blower air passage is provided. A heat exchanger and a heat exchanger that is thermally connected to the heating surface and includes a fourth heat exchanger in the exhaust air passage.

  With this configuration, when the storage space is cooled, the third heat exchanger is cooled by the cooling airflow flowing through the air blower air passage, and the endothermic surface of the second thermoelectric conversion device is cooled to the temperature. Go down. Moreover, the airflow heated with the 2nd heat exchanger flows into a discharge air path, a 4th heat exchanger is heated, the heat generating surface of a 2nd thermoelectric conversion device is heated, and temperature rises. By these actions, the temperature difference between the two surfaces of the second thermoelectric conversion device becomes large, and the second thermoelectric conversion device can efficiently generate power and recover a part of the energy.

  Moreover, when keeping the said storage space warm, the 3rd heat exchanger is heated by the warm airflow which flows through an air-conditioner blowing wind path, the heat absorption surface of a 2nd thermoelectric conversion device is heated, and temperature rises. On the other hand, the airflow cooled by the second heat exchanger flows to the discharge air passage, the fourth heat exchanger is cooled, the heat generating surface of the second thermoelectric conversion device is cooled, and the temperature is lowered. By these, the temperature difference of both surfaces of a 2nd thermoelectric conversion device becomes large, can generate electric power efficiently with a 2nd thermoelectric conversion device, and can collect | recover some energy.

  Furthermore, the invention described in claim 3 supplies electricity generated by the second thermoelectric conversion device to an electrical component.

  By adopting such a configuration, a part of the temperature-controlled air heat flowing through the air blower air passage and the exhaust air passage is efficiently converted into electricity by the second thermoelectric conversion device, and the converted electricity is used to convert the heat. Since electric parts can be operated, external power can be reduced.

  According to a fourth aspect of the present invention, electricity generated by the second thermoelectric conversion device is supplied to the first thermoelectric conversion device.

  By adopting such a configuration, a part of the temperature-controlled air heat flowing through the air blower air passage and the exhaust air passage is efficiently converted into electricity by the second thermoelectric conversion device, and the converted electricity is used to convert the heat. Since the first thermoelectric conversion device can be operated, external power can be reduced.

  Furthermore, the invention according to claim 5 supplies electricity generated by the second thermoelectric conversion device to the blower fan.

  With such a configuration, a part of the temperature-controlled air heat flowing through the air blower air passage and the exhaust air passage is efficiently converted into electricity by the second thermoelectric conversion device, and air is blown using the converted electricity. Since the fan can be operated, external power can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a cross-sectional view of the cold / hot storage in Embodiment 1 of the present invention.

  In FIG. 1, the first thermoelectric conversion device 1 has two heat exchange surfaces, one serving as the heat absorbing surface 1a and the other serving as the heat generating surface 1b. Specific examples of the first thermoelectric conversion device 1 include a Peltier effect element, a tunnel effect element, and a Stirling refrigerator.

  The box body 7 is a box having a heat insulating structure, and has a storage space 8 inside thereof, and an opening / closing door 10 for taking in and out articles into the storage space 8 is provided at the upper part. The box body 7 and the opening / closing lid 10 are constituted by a frame body 9 and a heat insulating member 5 inserted into the frame body 9. The first thermoelectric conversion device 1 is provided on one surface of the box 7. The first heat exchanger 2 is thermally connected to the heat absorbing surface 1a and is in the storage space 8, and the second heat exchanger 3 is thermally connected to the heat generating surface 1b. In addition, it is provided outside the storage space 8. The blower fan 12 is provided between the partition plates 13 that partition the storage space 8, and is provided on the front surface of the first heat exchanger 2. The air conditioner 11 includes a mechanism for adjusting the temperature. A specific example of the air conditioner 11 is an air conditioner. The air conditioner blowout air path 4 flows the airflow blown from the air conditioner 11 into the second heat exchanger 3, and the exhaust airflow path 6 exchanges heat with the second heat exchanger 3. After that, it is discharged to the outside. Moreover, the 2nd thermoelectric conversion device 14 is located between the wall surfaces of the air-conditioning blowing air path 4 and the discharge air path 6 which oppose, and the two heat exchange surfaces located facing each are the said air-conditioning blowing air path 4 and discharge | emission It faces the air path 6. One of the two heat exchange surfaces acts as a heat absorption surface 14a and the other as a heat generation surface 14b.

  The third heat exchanger 15 is thermally connected to the heat absorbing surface 14a and is located in the air conditioner blowout air passage 4, and the fourth heat exchanger 16 is thermally connected to the heat generating surface 14b. , Located in the exhaust air passage 6. The electrical output of the second thermoelectric conversion device 14 in the previous period is connected to the electrical input terminals of the first thermoelectric conversion device 1 and the blower fan 12 by wiring.

  The operation and action of the cold / hot storage configured as described above will be described below by taking the case of cooling the storage space 8 as an example.

  In the above configuration, when a current is supplied from a power source (not shown) to the first thermoelectric conversion device 1, the heat exchange surfaces of the first thermoelectric conversion device 1 function as a heat absorption surface 1a and a heat generation surface 1b. The heat generating surface 1b and the second heat exchanger 3 are thermally connected to each other, and the heat generating surface 1b is promoted to exchange heat by the cooled airflow from the air conditioner 11. The endothermic action from the endothermic surface 1a of the one heat exchange device 1 is also promoted. Therefore, the storage space 8 of the box 7 is in a cooled state.

  On the other hand, the 3rd heat exchanger 15 located in the air-conditioner blowing air path 4 is cooled by the cooled airflow from the said air-conditioner 11, and the heat absorption surface of the 2nd thermoelectric conversion device 14 in connection with this. As for 14a, cooling accelerates and temperature falls. Further, since the air flow heated by the second heat exchanger 3 flows to the exhaust air passage 6, the fourth heat exchanger 16 located in the exhaust air passage 6 is affected by the air flow. In response to this, the heating action of the heat generating surface 14b in the second thermoelectric conversion device 14 is also accelerated, and the temperature rises.

  By these synergistic actions, the temperature difference between the two surfaces of the second thermoelectric conversion device 14 becomes large, and the power generation action in the second thermoelectric conversion device 14 becomes efficient. The generated electricity can be eliminated or reduced by supplying electric current through the wires 20 and 21 of the first thermoelectric conversion device 1 and the blower fan 12 to flow outside.

  In the present embodiment, an electrical component (not shown) is a component that operates using electricity as power, for example, refers to a motor or a lamp, and is an electrical component (not shown) that is used in other than a cold storage. For example, the LED which shows operation | movement of an air conditioner etc. is pointed out.

  Further, in the present embodiment, electricity generated from the second thermoelectric conversion device 14 is caused to flow to the first thermoelectric conversion device 1 and the blower fan 12, but electricity is allowed to flow to either one. May be.

  As described above, in the present embodiment, when the storage space 8 of the box 7 is cooled, the heat absorption surface 1a starts to absorb heat by energizing the first heat exchange device 1, and the storage space The inside of 8 is cooled.

  Further, the air conditioner 11 is in a so-called cooling operation state on the air blower air passage 4 side, and the third heat exchanger 15 is cooled by a cooling airflow lower than room temperature flowing through the air conditioner blow air passage 4. The Thereby, the heat absorption surface 14a of the 2nd thermoelectric conversion device 14 is cooled, and temperature falls. In addition, the air flow heated by the second heat exchanger 3 flows to the discharge air passage 6, whereby the fourth heat exchanger 16 is heated, and the heat generating surface 14 b of the second thermoelectric conversion device 14 is heated. The temperature goes up.

  Due to these synergistic effects, the temperature difference between the two surfaces of the second thermoelectric conversion device 14 becomes large. As a result, the second thermoelectric conversion device 14 can efficiently generate power and recover a part of the energy.

  Furthermore, when the storage space 8 is warmed (insulated), the heat absorption surface 1a generates heat by reversing the energization direction to the first heat exchange device 1, and the storage space 8 is warmed. Keep warm.

  Further, the air conditioner 11 is in a so-called heating operation state on the air blower air passage 4 side, and the third heat exchanger 15 is heated by a warm air flow higher than room temperature flowing through the air conditioner blow air passage 4. Is done. Thereby, the endothermic surface 14a of the second thermoelectric conversion device 14 is heated and the temperature rises. In addition, the air flow cooled by the second heat exchanger 3 flows to the discharge air passage 6, whereby the fourth heat exchanger 16 is cooled, and the heat generating surface 14 b of the second thermoelectric conversion device 14 is cooled. The temperature drops.

  Due to these synergistic effects, the temperature difference between the two surfaces of the second thermoelectric conversion device 14 becomes large, and the second thermoelectric conversion device 14 can efficiently generate power and recover a part of the energy.

  Further, by supplying electricity generated by the second thermoelectric conversion device 14 to the electrical component, part of the heat is efficiently converted into electricity by the second thermoelectric conversion device 14, and the electrical component is operated by the converted electricity. As a result, external power can be reduced.

  Furthermore, by operating the first thermoelectric conversion device 1 with electricity generated by the second thermoelectric conversion device 14, a part of heat is efficiently converted into electricity by the second thermoelectric conversion device 14, and the converted electricity Thus, the first thermoelectric conversion device 1 can be operated, so that external power can be reduced.

  Further, by operating the blower fan with electricity generated by the second thermoelectric conversion device 14, part of the heat is efficiently converted into electricity with the second thermoelectric conversion device 14, and the blower fan 12 is converted with the converted electricity. Since it can operate, external power can be reduced.

  As described above, the cooling / heating chamber according to the present invention can be applied to the storage of food or chemicals or the use as a physics and chemistry device because the cooling operation and the heating (warming) operation capable of reducing the power consumption can be performed. .

Sectional drawing of the cool / warm warehouse in Embodiment 1 of this invention Cross-sectional view of a cold storage room showing a conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st thermoelectric conversion device 1a Endothermic surface 1b Heat generating surface 2 1st heat exchanger 3 2nd heat exchanger 4 Air-conditioner blowing air path 5 Thermal insulation member 6 Exhaust air path 7 Box 8 Storage space 9 Frame 10 Opening and closing door 11 Air conditioner 12 Blower fan 13 Partition plate 14 Second thermoelectric conversion device 14a Heat absorption surface 14b Heat generation surface 15 Third heat exchanger 16 Fourth heat exchanger

Claims (5)

  A first heat exchange device having a heat exchange surface for cooling or heating a storage space inside the box, and an anti-storage space in the first heat exchange device, the anti-storage space being configured on the anti-storage space side of the box A heat circuit that faces the heat exchange surface on the side, and a heat exchange part that absorbs or dissipates heat at a position sandwiching the heat exchange surface on the side opposite to the storage space in the first heat exchange device in the wind circuit The cold-heated room which provided the ventilation means which ventilates the 2nd heat exchange device which performed, and the temperature control air in the said wind circuit.   A box body having a storage space inside, and a first thermoelectric conversion device having a heat absorption surface or a heat generation surface is provided on at least one surface of the box body, thermally connected to one of the heat absorption surfaces, and provided in the storage chamber The first heat exchanger, the second heat exchanger thermally connected to the heat generating surface, the temperature adjusting means for adjusting the temperature, and the temperature of the second heat exchanger by the temperature adjusting means. An air conditioner blowout air passage that flows in a conditioned air flow, and a discharge air passage that discharges the temperature-controlled air flow from the second heat exchanger to the outside. A second thermoelectric conversion device having an endothermic surface and a heat generating surface is provided, and a third heat exchanger is provided that is thermally connected to the heat absorbing surface and provided in the air blower air passage. The cold storage room according to claim 1, further comprising a fourth heat exchanger in the exhaust air passage.   The cold / hot storage according to claim 1 or 2, wherein electricity generated by the second thermoelectric conversion device is supplied to an electrical component.   The cold / hot storage according to any one of claims 1 to 3, wherein electricity generated by the second thermoelectric conversion device is supplied to the first thermoelectric conversion device.   5. The cold / hot storage according to claim 1, wherein electricity generated by the second thermoelectric conversion device is supplied to the blower fan. 6.

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