JP2006090635A - Electronic cold insulating storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the evaporation of dew condensate in an electronic cold insulating storage for evaporating to discharge the dew condensate, and to improve the heat radiating capacity of a radiator. <P>SOLUTION: The dew condensate is supplied to a passage 12 by a pump 9, and an end face 11 inclines in a gravitational direction toward a horizontal end face from a dew condensate supply part. Passages 13 for allowing the dew condensate in the gravitational direction from the end face 11 are provided on a base 7 of a radiator 6, and branch passages 14 branching from the passages 13 are provided at an inclination angle smaller than 90° in the gravitational direction. Fine passages 15 are further provided on the surfaces of fins 8. The dew condensate produced in a cooler 3 is thereby spread to the whole radiator 6 to extend a heating time. The quantity of dew condensate evaporated by heat generation of a heating surface 2b of a thermoelectric conversion device 2 can be considerably improved, and the heat radiating capacity of the radiator 6 can also be improved by radiating heat using latent heat of vaporization. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a refrigerator that stores articles such as food and drinks and medicines, and is particularly mounted in an automobile or the like, so that condensation generated in a cooler or refrigerator can be processed without flowing out of the refrigerator. It relates to the cold storage that was made.

  Conventionally, as this kind of cold storage, what cools the inner container comprised with the material excellent in heat conductivity with the thermoelectric conversion device is common (for example, refer patent document 1).

  Here, the thermoelectric conversion device includes a so-called thermoelectric element and a Peltier element, a tunnel effect element, a Stirling refrigerator, and the like.

  FIG. 7 is a side cross-sectional view of a conventional cool / warm chamber described in Patent Document 1. As shown in FIG. 7, the conventional cold / hot storage includes a box 20, a thermoelectric conversion device 21, a radiator 22, a blower 23, a cooler 24, a condensed water receiver 25, and a drain hole 26. It is configured. The cooler 24 is provided with a hole 27 that guides the condensed water generated in the cooler 24 and the object to be cooled 28 to the drain hole 26.

  The operation of the cold / hot storage configured as described above will be described below.

  When the thermoelectric conversion device 21 is energized, the cooling surface absorbs heat, the cooler 24 is cooled, and the object to be cooled 28 is cooled or cooled. At this time, when the cooler 24 and the object to be cooled 28 are lower than the air temperature in the storage in the box 20 and further become below the dew point temperature, dew condensation occurs on the cooler 24 and the object to be cooled 28. These condensed water falls through the hole 27 due to gravity and accumulates in the condensed water receiver 25 through the drain hole 26.

On the other hand, heat is generated on the heat radiating surface, heat is transmitted to the heat radiator 22, and heat is radiated from the heat radiator 22 by the air flow generated by the blower 23. Thereafter, the airflow passes over the condensed water receiver 25 and evaporates the condensed water.
JP-A-6-207769

  However, in the above-described conventional configuration, since the airflow that has passed through the radiator 22 and increased in temperature passes over the condensed water receiver 25 and evaporates the condensed water, the amount of condensed water is small and the amount of condensed water is large. In some cases, there was a problem that it could not evaporate. Moreover, since the heat exchanger is exchanging heat by changing the sensible heat of air, it has a problem that the amount of heat radiation is small.

  This invention solves the conventional subject, and it aims at providing the electronic cool box which improved the evaporation amount while improving the evaporation amount of dew condensation water.

  In order to solve the above-described conventional problems, an electronic cool box of the present invention includes a condensed water receiver and a pump that are installed outside the box and collects condensed water.

  Thereby, the dew condensation water can be supplied to the end surface on the opposite side in the gravity direction of the radiator, and can be directly heated by the radiator, and can be radiated using the latent heat of evaporation of the dew condensation water.

  Moreover, this invention provides the flow path through which dew condensation water flows in the gravity direction opposite end surface of the said heat radiator, and can prevent flowing dew condensation water on the heat radiator back surface to which an airflow does not pass easily.

  The electronic cool box of the present invention can improve the heat dissipation capability of the radiator while improving the evaporation amount of condensed water.

  The invention described in claim 1 includes a box having a storage space inside, a thermoelectric conversion device having two heat transfer surfaces, one serving as a heat absorption surface and the other serving as a heat generation surface, and being thermally connected to the heat absorption surface. A cooler installed in the box or in the storage space, a radiator thermally connected to the heat generation surface, a drain hole for discharging condensed water condensed in the cooler or the storage space to the outside of the box, Condensed water receiver that is installed outside the box and collects condensed water and a pump. The pump pumps the condensed water from the condensed water receiver and supplies it to the end face on the opposite side of the radiator in the gravity direction from the condensed water supply. It is a thing.

  With this configuration, the condensed water generated in the cooler or the like can be supplied to the radiator by a pump and can be evaporated on the surface of the radiator, improving the evaporation amount of the condensed water and condensing water. Since heat is dissipated using the latent heat of vaporization, the heat dissipating capability of the radiator can be improved.

  According to a second aspect of the present invention, the radiator is composed of a substrate and fins thermally connected to the substrate.

  By setting it as this structure, the surface area of the said heat radiator can be taken large, and while improving the evaporation amount of condensed water, the heat dissipation capability of a heat sink can be improved.

  According to a third aspect of the present invention, the end face on the opposite side in the gravitational direction of the radiator is inclined from the condensed water supply portion in the gravitational direction.

  By adopting such a configuration, the dew condensation water supplied from the dew condensation water supply unit to the end surface on the opposite side in the gravitational direction of the radiator can be expanded in the horizontal direction, and as a result, the wet area of the radiator due to the dew condensation water is increased. Thus, the evaporation amount of the dew condensation water can be improved, and the heat dissipation capability of the radiator can be improved.

  According to a fourth aspect of the present invention, a flow path through which condensed water flows is provided on the end surface on the opposite side in the direction of gravity of the radiator.

  By adopting such a configuration, it is possible to prevent the condensed water from flowing to the back surface of the radiator where it is difficult for the airflow to pass through, thereby improving the evaporation amount of the condensed water and improving the heat dissipation capability of the radiator.

  According to a fifth aspect of the present invention, a flow path for allowing condensed water to flow in the gravitational direction from the side surface opposite to the gravitational direction is provided on the fin connection surface of the substrate.

  In this way, the condensed water flows through the flow path provided in the direction of gravity, so that it can flow down on the substrate surface without being scattered, thereby improving the evaporation amount of the condensed water and improving the heat dissipation capability of the radiator. Can be improved.

  The invention according to claim 6 is a system in which the condensing water is branched from a plurality of flow paths in the gravitational direction from the side opposite to the gravitational direction on the fin connection surface of the substrate in the radiator, and the inclination is smaller than 90 degrees in the gravitational direction. A branch channel is provided at a corner.

  By adopting such a configuration, the condensed water can be supplied to a wide area of the substrate by flowing down the substrate surface without splashing the condensed water and flowing to the branch flow path. While improving, the heat dissipation capability of a radiator can be improved.

  In a seventh aspect of the invention, a fine channel is provided on the fin surface of the radiator from the branch channel toward the end surface opposite to the substrate.

  Therefore, the dew condensation water supplied on the substrate surface by the branch flow path provided on the substrate surface can be supplied to the fin surface by the capillary phenomenon of the fine flow path provided on the fin surface. It is possible to improve the heat dissipation capability of the radiator as well as the amount of evaporation.

  The invention described in claim 8 includes a box having a storage space inside, a thermoelectric conversion device having two heat transfer surfaces, one serving as a heat absorption surface and the other serving as a heat generation surface, and being thermally connected to the heat absorption surface. A cooler installed in the box or in the storage space, a radiator thermally connected to the heat generating surface, a drain hole for discharging condensed water condensed in the cooler or the storage space to the outside of the box, It is composed of a dew condensation receiver that is installed outside the box and collects dew condensation water, and a sprayer, and the sprayer sprays the dew condensation water on the radiator.

  By adopting such a configuration, the condensed water can be sprayed onto the radiator to supply the condensed water evenly to the entire radiator, improving the evaporation amount of the condensed water and improving the heat dissipation capability of the radiator. Can do.

  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 is a rear view of the electronic cool box in Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA in FIG.

  1 and 2, the box 1 has a storage space 1a inside, and can store food, medicine, and the like. The thermoelectric conversion device 2 has an endothermic surface 2a and a heat generating surface 2b, and the cooler 3 is thermally connected to the endothermic surface 2a. The cooler 3 is installed in a storage space 1 a inside the box 1. The drain hole 4 is installed on the gravity direction side of the cooler 3, and the condensed water discharged to the outside of the box 1 through the drain hole 4 is stored in the condensed water receiver 5.

  The radiator 6 includes a substrate 7 and fins 8 that are thermally connected to the substrate 7 and provided substantially perpendicularly to the substrate 7. The substrate 7 and the heat generating surface 2b are thermally connected. The radiator 6 is made of a material having a high thermal conductivity such as metal, and aluminum or an aluminum alloy is suitable from the viewpoint of ease of molding and low cost. Further, the substrate 7 and the fins 8 are preferably integrally molded, and an extrusion molded product using an aluminum alloy is suitable. In addition, graphite and the like can also be adopted, and it is possible to achieve higher performance with lighter weight. The substrate 7 may be a high thermal conductive member using a phase change of a refrigerant such as a heat pipe.

  3 is a front view of the radiator, FIG. 4 is a top view of the radiator, and FIG. 5 is a sectional view taken along line BB in FIG. Next, the configuration of the radiator 6 will be described in more detail with reference to FIGS.

  The pump 9 pumps the dew condensation water from the dew condensation water receiver 5 and pours water from the dew condensation water supply unit 10 onto the end surface 11 on the opposite side in the gravity direction of the radiator 6. Further, on the end surface 11 on the opposite side in the gravity direction, an end surface channel on the opposite side in the gravity direction (hereinafter referred to as an end surface channel) 12 is provided in the longitudinal direction of the radiator 6. A flow path 13 is provided on the surface in the direction of gravity from the end surface 11 opposite to the direction of gravity. A branch channel 14 is provided that branches from the channel 13 and has an approximately eight shape with an inclination angle smaller than 90 degrees in the direction of gravity. Further, a fine channel 15 is provided on the surface of the fin 8 so as to be inclined in the direction of gravity from the branch channel 14 toward the end surface opposite to the substrate 7.

  The blower 16 that blows the airflow to the radiator 6 is installed above the radiator 6 and operates so that the airflow flows in the antigravity direction. In the present embodiment, an axial fan is used as the blower 16, but a cross flow fan or the like may be used.

  The operation and action of the electronic cooler configured as described above will be described below.

  By passing an electric current through the thermoelectric conversion device 2, the cooling surface 2a is cooled, and the cooler 3 is cooled. And the cooling side air blower 17 operate | moves, heat-exchanges the air in the storage space 1a, and the cooler 3, and cools the storage space 1a. At this time, if the temperature of the cooler 3 becomes equal to or lower than the dew point temperature of the air in the storage space 1a, condensation occurs in the cooler 3. This condensed water is collected by gravity into a drain hole 4 installed on the side of the cooler 3 in the direction of gravity, and discharged outside the storage space 1a.

  On the other hand, the heat generating surface 2 b of the thermoelectric conversion device 2 generates heat, heat is transmitted to the substrate 7 of the radiator 6, and heat spreads to the fins 8. At this time, the dew condensation water discharged from the box 1 through the drain hole 4 is collected in the dew condensation water receiver 5. Furthermore, the dew condensation water supplied to the end surface 11 opposite to the gravity direction by the pump 9 enters the end surface flow path 12. Since the end surface 11 on the opposite side in the direction of gravity is inclined in the direction of gravity from the dew condensation water supply unit toward the end surface in the horizontal direction, the dew condensation water flows toward the end surface in the horizontal direction by gravity while partly diverting to the flow path 13. The heat spreader 6 extends in the horizontal direction.

  Next, the dew condensation water divided into the flow path 13 flows in the direction of gravity on the substrate 7, is divided into a substantially eight-shaped branch flow path 14, and spreads over the entire substrate 7. Thereafter, the condensed water flowing through the branch channel 14 is supplied to the fine channel 15 on the surface of the fin 8 by the action of capillary action and gravity, and spreads over the entire fin 8.

  As described above, the dew condensation water spreads over the entire radiator 6, and the heat of the heat generating surface 2 b of the thermoelectric device 2 described above is transmitted to the radiator 6 to heat and evaporate the dew condensation water. Further, the air blower 16 on the radiator side causes the air flow to flow in the anti-gravity direction to reduce the flow rate of the dew condensation water, thereby extending the heating time by the heat dissipator 6 and the dew condensation water by the air flow. Evaporation can be promoted.

  As described above, in the present embodiment, the condensed water can be supplied to the end surface flow path 12 of the radiator 6 by the pump 9. Further, the radiator 6 is composed of a substrate 7 and fins 8, and the end surface 11 on the opposite side to the gravitational direction of the radiator 6 is inclined in the gravitational direction from the dew condensation water supply unit toward the horizontal end surface. A flow path 13 through which condensed water flows from the end surface 11 opposite to the gravitational direction in the gravitational direction is provided on the fin 8 connection surface of the substrate 7 of the radiator 6, and is further branched from the flow path 13 and an inclination angle smaller than 90 degrees in the gravitational direction. The branch flow path 14 is provided, and the fine flow path 15 is provided on the surface of the fin 8 toward the end surface opposite to the substrate 7. In addition, an air flow is caused to flow in the radiator 6 in the antigravity direction by the radiator-side blower 16.

  With these configurations, the condensed water generated in the cooler 3 is spread over the entire radiator 6, the heating time is extended, and the amount of condensed water evaporated by the heat generated on the heat generating surface 2 b of the thermoelectric conversion device 2 is greatly improved. In addition, the heat dissipation capability of the radiator 6 can be improved by dissipating heat using latent heat of vaporization.

(Embodiment 2)
Components having the same configurations as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 6 is a rear view of the electronic cool box in the second embodiment of the present invention.

  The sprayer 18 is installed outside the box 1 and sprays the condensed water in the condensed water receiver 5 onto the radiator 6.

  Regarding the electronic cooler configured as described above, operations and effects different from those of the first embodiment will be described below.

  The condensed water sprayed by the sprayer 18 is uniformly supplied to the entire radiator 6, and the condensed water can be evenly supplied to the entire radiator 6, improving the evaporation amount of the condensed water and improving the amount of the radiator 6. The heat dissipation capability can be improved.

  As described above, in the present embodiment, the sprayer 18 sprays the dew condensation water onto the radiator 6 so that the dew condensation water can be uniformly supplied to the radiator 6 and the evaporation amount of the dew condensation water is improved. The heat dissipation capability of the radiator 6 can be improved.

  As described above, the electronic cool box according to the present invention can evaporate and discharge the condensed water, and thus can be applied to uses such as an electronic cool box, a refrigerator, a chemical storage box, and a physics and chemistry instrument.

The rear view of the electronic cold storage in Embodiment 1 of this invention Sectional view by the AA line of FIG. Front view of a radiator used in the electronic cool box in the first embodiment Top view of the radiator used in the electronic cold storage Sectional view by the BB line of FIG. The rear view of the electronic cold storage in Embodiment 2 of this invention Side cross-sectional view of conventional cold storage

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Box 2 Thermoelectric conversion device 2a Cooling surface 2b Heat generating surface 3 Cooler 4 Drain hole 5 Condensation water receptacle 6 Radiator 7 Substrate 8 Fin 9 Pump 10 Condensation water supply part 11 Gravity direction opposite end surface 12 Gravity direction opposite end surface flow Road 13 Flow path 14 Branch flow path 15 Fine flow path on fin surface 16 Radiator-side air blower 18 Sprayer

Claims (8)

  A box having a storage space inside, a thermoelectric conversion device having two heat transfer surfaces, one serving as a heat absorption surface and the other serving as a heat generation surface; and the box or the storage space thermally connected to the heat absorption surface A cooler installed inside, a radiator thermally connected to the heating surface, a drain hole for discharging condensed water condensed in the cooler or the storage space to the outside of the box, and the box A dew condensation receiver installed outside the body to collect dew condensation water, a pump that pumps the dew condensation water from the dew condensation water receiver, and a dew condensation that pumps the dew condensation water pumped from the pump to the end surface opposite to the gravitational direction of the radiator An electronic cooler consisting of a water supply unit.   The electronic cooler according to claim 1, wherein the radiator is composed of a substrate and fins that are thermally connected to the substrate.   The electronic cooler according to claim 2, wherein the radiator has a shape in which an end surface on the opposite side in the gravity direction is inclined in the gravity direction from the condensed water supply unit.   The electronic cool box according to claim 2 or 3, wherein a flow path through which the condensed water flows is provided on an end surface on the opposite side of the gravitational direction of the radiator.   5. The electronic system according to claim 2, wherein a plurality of flow paths for allowing condensed water to flow in the direction of gravity from the end surface opposite to the direction of gravity are provided on the fin connection surface of the substrate in the radiator. Cold storage.   6. The electronic cool box according to claim 5, wherein a branch channel is provided at an inclination angle smaller than 90 degrees in the direction of gravity on the fin connection surface of the substrate in the radiator. .   The electronic cool box according to claim 6, wherein a fine flow path is provided on the fin surface of the radiator from the branch flow path toward the end surface on the side opposite to the substrate.   A box having a storage space inside, a thermoelectric conversion device having two heat transfer surfaces, one serving as a heat absorption surface and the other serving as a heat generation surface; and the box or the storage space thermally connected to the heat absorption surface A cooler installed inside, a radiator thermally connected to the heating surface, a drain hole for discharging condensed water condensed in the cooler or the storage space to the outside of the box, and the box An electronic type comprising a dew condensation receiver installed outside the body and collecting dew condensation water and a sprayer installed outside the box, and spraying the dew condensation water collected in the dew condensation receiver by the sprayer onto the radiator Cold storage.

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