JP2006090633A - Electronic cold 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: An end face 8 of the radiator 5 is installed on the gravitational direction side rather than a cooler 3 so that the dew condensate discharged from a drain hole 4 can be supplied to a passage 9. The end face 8 inclines in the gravitational direction toward a horizontal end face from a dew condensate supply part, and passages 10 for allowing the dew condensate to flow in the gravitational direction from the end face 8 are provided on a base 6 of the radiator 5. Branch passages 11 branching from the passages 10 are provided at a smaller inclination angle than 90° in the gravitational direction, and fine passages 12 are further provided on the surfaces of fins 7. The dew condensate produced in the cooler 3 is thereby spread to the whole radiator 5 to extend a heating time, and the quantity of dew condensate evaporated by heat generation of a heating surface 2b of a thermoelectric conversion device 2 is considerably improved while improving the heat radiating capacity of the radiator 5 by radiating heat using latent heat of vaporization. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

Translated fromJapanese

本発明は、飲食物や薬品等の物品を収納する保冷庫に関するもので、特に自動車等に搭載されるもので、冷却器や保冷庫内に生じた結露を保冷庫から流出させないで処理できるようになした保冷庫に関するものある。  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. There is something about the cold storage made.

従来、この種の保冷庫としては、熱伝導性に優れた材料で構成された庫内容器を熱電変換デバイスで冷却するものが一般的である（例えば、特許文献１参照）。  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).

ここで、熱電変換デバイスとは熱電素子、ペルチェ素子と呼ばれるものやトンネル効果素子、スターリング冷凍機などがあげられる。  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.

図７は、前記特許文献１に記載された従来の冷温庫の側断面図である。図７に示すように、従来の冷温庫は、箱体１７と、熱電変換デバイス１８と、放熱器１９と、送風装置２０と、冷却器２１と、結露水受け２２と、排水孔２３とから構成されている。冷却器２１には冷却器２１や被冷却物２５に生じた結露水を排水孔２３へ導く、穴２４が設けられている。  FIG. 7 is a side cross-sectional view of a conventional cool / warm chamber described inPatent Document 1. As shown in FIG. 7, the conventional cold / hot storage includes abox 17, athermoelectric conversion device 18, aradiator 19, ablower 20, acooler 21, a dewcondensation water receiver 22, and adrain hole 23. It is configured. Thecooler 21 is provided with ahole 24 that guides the condensed water generated in thecooler 21 and theobject 25 to be cooled to thedrain hole 23.

以上のように構成された冷温庫について、以下その動作を説明する。  The operation of the cold / hot storage configured as described above will be described below.

熱電変換デバイス１８に通電すると、冷却面が吸熱し、冷却器２１が冷却され被冷却物２５が保冷もしくは冷却される。この時、冷却器２１や被冷却物２５が箱体１７内の貯蔵庫内の空気温度より低下し、さらに露点温度以下になると冷却器２１や被冷却物２５に結露が生じる。これらの結露水は重力により、穴２４を通って落下し、排水孔２３から結露水受け２２に溜まる。  When thethermoelectric conversion device 18 is energized, the cooling surface absorbs heat, thecooler 21 is cooled, and the object to be cooled 25 is kept cold or cooled. At this time, when thecooler 21 and the object to be cooled 25 are lower than the air temperature in the storage in thebox body 17 and become below the dew point temperature, condensation occurs on thecooler 21 and the object to be cooled 25. These condensed water falls through thehole 24 due to gravity and accumulates in the condensedwater receiver 22 through thedrain hole 23.

一方、放熱面では発熱し、放熱器１９に熱が伝わり、送風装置２０により生じた気流により放熱器１９から放熱する。この後、気流は結露水受け２２上を通り、結露水を蒸発させる。
特開平６−２０７７６９号公報On the other hand, heat is generated on the heat radiating surface, and the heat is transmitted to theradiator 19, and is radiated from theradiator 19 by the air flow generated by theblower 20. Thereafter, the airflow passes on the dewcondensation water receiver 22 to evaporate the dew condensation water.
JP-A-6-207769

しかしながら、上記従来の構成では、放熱器１９を通過し、温度を上昇させた気流が結露水受け２２上を通過し、結露水を蒸発させるため結露水の蒸発量は少なく、結露水量が多い場合には蒸発しきれないという課題があった。また、放熱器は空気の顕熱変化により熱交換しているため、放熱量が小さいという課題も有していた。  However, in the above-described conventional configuration, when the airflow that has passed through theradiator 19 and increased in temperature passes over the condensedwater receiver 22 and evaporates the condensed water, the amount of condensed water is small and the amount of condensed water is large. Had the problem that it could not evaporate. Moreover, since the heat exchanger exchanges heat by changing the sensible heat of air, it has a problem that the amount of heat radiation is small.

本発明は従来の課題を解決するもので、結露水の蒸発量を向上させるとともに、放熱量を向上させた電子式保冷庫を提供することを目的とする。  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.

上記従来の課題を解決するために、本発明の電子式保冷庫は、放熱器の重力方向反対側端面が冷却器重力方向側端面よりも重力方向側に設置され、排水孔から排出される結露水が放熱器の重力方向反対側端面に送られるように構成したものである。  In order to solve the above-described conventional problems, the electronic cooler of the present invention is configured such that the end surface on the opposite side in the gravitational direction of the radiator is installed closer to the gravitational direction side than the end surface on the cooler gravitational direction side, and condensation is discharged from the drain hole. It is configured such that water is sent to the end surface on the opposite side in the direction of gravity of the radiator.

これによって、冷却器についた結露水を重力によって放熱器へと導き、放熱器の表面上で蒸発させることができる。  Thereby, the dew condensation water attached to the cooler can be guided to the radiator by gravity and can be evaporated on the surface of the radiator.

また本発明は、放熱器を、基板と熱的に接続されたフィンとから構成したもので、これによって、放熱器の表面積を大きくとることができる。  In the present invention, the radiator is composed of fins that are thermally connected to the substrate, whereby the surface area of the radiator can be increased.

また本発明は、前記熱電変換デバイスの発熱面と放熱器とが熱良導材料で熱的に接続されたものである。  In the present invention, the heat generating surface of the thermoelectric conversion device and the radiator are thermally connected with a thermally conductive material.

これによって、熱電変換デバイスの発熱を放熱器に効率よく伝えることができる。  As a result, heat generated by the thermoelectric conversion device can be efficiently transmitted to the radiator.

また本発明は、前記熱良導材料を、金属材料で構成されたもので、これによって、比較的安価に効率よく熱電変換デバイスの発熱を放熱器に伝えることができる。  Further, according to the present invention, the heat conducting material is made of a metal material, whereby heat generated from the thermoelectric conversion device can be efficiently transmitted to the radiator at a relatively low cost.

また本発明は、前記熱良導材料を、ヒートパイプで構成されたもので、これによって、非常に効率よく熱電変換デバイスの発熱を放熱器に伝えることができる。  Further, in the present invention, the heat conducting material is constituted by a heat pipe, whereby the heat generated by the thermoelectric conversion device can be transmitted to the radiator very efficiently.

また本発明は、放熱器を、重力方向反対側端面が結露水供給部から水平方向端面に向かって重力方向に傾斜する形状としたものである。  Moreover, this invention makes a heat radiator the shape where the gravity direction opposite end surface inclines in a gravitational direction toward a horizontal direction end surface from a dew condensation water supply part.

これによって、結露水供給部から放熱器の重力方向反対側端面へ供給された結露水を水平方向へ拡げることができ、放熱器の結露水による濡れ面積を増加させることができる。  Thereby, the dew condensation water supplied from the dew condensation water supply unit to the end surface on the opposite side to the gravity direction of the radiator can be expanded in the horizontal direction, and the wetted area of the radiator due to the dew condensation water can be increased.

また本発明は、前記放熱器における重力方向反対側端面に、結露水が流れる流路を設けたもので、これによって、結露水を気流が通過しにくい放熱器背面に流すのを防ぐことができる。  Moreover, this invention provides the flow path through which dew condensation water flows in the gravity direction opposite end surface in the said heat radiator, By this, it can prevent flowing dew condensation water on the heat radiator back surface which an airflow cannot pass easily. .

また本発明は、前記放熱器の基板のフィン接続表面上に、重力方向反対側面から重力方向に結露水を流す流路を設けたものである。  Moreover, this invention provides the flow path which flows dew condensation water on the fin connection surface of the board | substrate of the said heat radiator from the side surface opposite to a gravitational direction to a gravitational direction.

これによって、結露水が重力方向に設けた流路を流れることにより、飛散させることなく、基板面上を流下させることができる。  As a result, the condensed water can flow down on the substrate surface without being scattered by flowing through the flow path provided in the direction of gravity.

また本発明は、前記放熱器に、重力方向反対側面から重力方向に結露水を流す複数の流路から分岐し重力方向に９０度よりも小さい傾斜角で分岐流路を設けたものである。  According to the present invention, the radiator is provided with a branch channel with a tilt angle smaller than 90 degrees in the direction of gravity, branched from a plurality of channels through which condensed water flows in the direction of gravity from the side opposite to the direction of gravity.

これによって、結露水を飛散させることなく、基板面上を流下させるとともに、分岐流路へ流れることにより、基板の広域に結露水を供給することができる。  As a result, the condensed water can be supplied to a wide area of the substrate by flowing down on the substrate surface without scattering the condensed water and flowing to the branch flow path.

また本発明は、前記放熱器に、分岐流路から基板と反対側端面方向に向かってフィン表面上に微細流路を設けたものである。  According to the present invention, the radiator is provided with a fine channel on the fin surface from the branch channel toward the end surface opposite to the substrate.

これによって、基板面上に設けた分岐流路により基板面上に供給された結露水は、フィン表面上に設けた微細流路の毛細管現象によりフィン表面へと供給することができる。  Thereby, 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.

また本発明は、内部に貯蔵空間を持つ箱体と、二つの伝熱面を持ち一方が吸熱面としてまた他方が発熱面として働く熱電変換デバイスと、前記吸熱面に熱的に接続され前記箱体内もしくは前記貯蔵空間内に設置された冷却器と、前記発熱面に熱的に接続された放熱器と、冷却器や貯蔵空間内に結露した結露水を前記箱体外へ排出する排水孔と、放熱器に気流を送風する送風装置とから構成され、前記送風装置により反重力方向に気流が放熱器を通過するようにしたものである。  The present invention also includes a box having a storage space therein, 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 thermally connected to the heat absorption surface. A cooler installed in the body or in the storage space; a radiator thermally connected to the heat generating surface; and a drain hole for discharging condensed water condensed in the cooler or the storage space to the outside of the box. And a blower that blows an airflow to the radiator, and the airflow passes through the radiator in the antigravity direction by the blower.

これによって、基板面上やフィン表面上を流下する結露水の流下速度を低減することができ、放熱器による加熱時間を延長することができる。  Thereby, the flow rate of the dew condensation water flowing down on the substrate surface or the fin surface can be reduced, and the heating time by the radiator can be extended.

本発明の電子式保冷庫は、結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  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.

請求項１に記載の発明は、内部に貯蔵空間を持つ箱体と、二つの伝熱面を持ち一方が吸熱面としてまた他方が発熱面として働く熱電変換デバイスと、吸熱面に熱的に接続され箱体内もしくは貯蔵空間内に設置された冷却器と、発熱面に熱的に接続された放熱器と、冷却器や貯蔵空間内に結露した結露水を箱体外へ排出する排水孔とから構成され、放熱器の重力方向反対側端面が冷却器重力方向側端面よりも重力方向側に設置され、排水孔から排出される結露水が放熱器の重力方向反対側端面に送られるように構成したものである。  The invention described inclaim 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 generating surface, and a drain hole for discharging condensed water condensed in the cooler or the storage space to the outside of the box Constructed so that the end face on the opposite side in the gravitational direction of the radiator is installed closer to the gravitational direction side than the end face on the gravitational side of the cooler, and the condensed water discharged from the drain hole is sent to the end face on the opposite side in the gravitational direction of the radiator It is a thing.

かかる構成とすることにより、冷却器についた結露水を重力によって放熱器へと導き、放熱器の表面上で蒸発させることができ、結露水の蒸発量を向上させるとともに、結露水の蒸発潜熱を利用して放熱するため、放熱器の放熱能力を向上させることができる。  With this configuration, the condensed water attached to the cooler can be guided to the radiator by gravity and evaporated on the surface of the radiator, improving the evaporation amount of the condensed water and reducing the latent heat of evaporation of the condensed water. Since the heat is dissipated by using it, the heat dissipating ability of the radiator can be improved.

請求項２に記載の発明は、前記放熱器を、基板と熱的に接続されたフィンとから構成したものであり、放熱器の表面積を大きくとることができ、結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  The invention according toclaim 2 comprises the heat sink composed of fins thermally connected to the substrate, which can increase the surface area of the heat sink and improve the evaporation amount of condensed water. At the same time, the heat dissipation capability of the radiator can be improved.

請求項３に記載の発明は、前記熱電変換デバイスの発熱面と放熱器とを、熱良導材料で熱的に接続したものであり、かかる構成によって、前記熱電変換デバイスの発熱を放熱器に効率よく伝えることができ、結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  The invention according toclaim 3 is the one in which the heat generating surface of the thermoelectric conversion device and the radiator are thermally connected with a heat conducting material, and with this configuration, the heat generation of the thermoelectric conversion device is transferred to the heat radiator. It can transmit efficiently, can improve the evaporation amount of condensed water, and can improve the heat dissipation capability of a radiator.

請求項４に記載の発明は、前記熱良導材料を金属材料で構成したもので、比較的安価に効率よく熱電変換デバイスの発熱を放熱器に伝えることができ、結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  In the invention according toclaim 4, the heat conducting material is made of a metal material, and heat generated from the thermoelectric conversion device can be efficiently transmitted to the radiator at a relatively low cost, thereby improving the evaporation amount of condensed water. In addition, the heat dissipation capability of the radiator can be improved.

請求項５に記載の発明は、前記熱良導材料をヒートパイプで構成したもので、非常に効率よく熱電変換デバイスの発熱を放熱器に伝えることができ、結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  The invention according toclaim 5 is configured such that the heat conducting material is constituted by a heat pipe, and heat generated from the thermoelectric conversion device can be transmitted to the radiator very efficiently, and the evaporation amount of condensed water is improved. The heat dissipating ability of the radiator can be improved.

請求項６に記載の発明は、前記放熱器を、重力方向反対側端面が結露水供給部から水平方向端面に向かって重力方向に傾斜する構成としたものであり、結露水供給部から放熱器の重力方向反対側端面へ供給された結露水を水平方向へ拡げることができ、その結果、放熱器の結露水による濡れ面積を増加させることができ、結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  The invention according toclaim 6 is configured such that the end face on the opposite side to the gravitational direction is inclined in the gravitational direction from the dew condensation water supply part toward the horizontal end face, and the heat sink is dissipated from the dew condensation water supply part. Condensed water supplied to the opposite end surface of the gravitational direction can be expanded in the horizontal direction, and as a result, the area wetted by the condensed water in the radiator can be increased, the amount of condensed water evaporated can be improved, and heat radiation The heat dissipation capability of the vessel can be improved.

請求項７に記載の発明は、前記放熱器において、重力方向反対側端面に結露水が流れる流路を設けたもので、結露水を気流が通過しにくい放熱器背面に流すのを防ぐことができ、結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  The invention according toclaim 7 is the radiator, wherein a flow path through which condensed water flows is provided on the end surface opposite to the direction of gravity, and prevents the condensed water from flowing to the rear surface of the radiator where the airflow is difficult to pass through. It is possible to improve the evaporation amount of condensed water and improve the heat dissipation capability of the radiator.

請求項８に記載の発明は、前記放熱器の基板のフィン接続表面上に、重力方向反対側面から重力方向に結露水を流す流路を設けたもので、結露水が重力方向に設けた流路を流れることにより、飛散させることなく、基板面上を流下させることができ、結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  According to an eighth aspect of the present invention, a flow path is provided on the fin connection surface of the substrate of the radiator to allow the condensed water to flow in the direction of gravity from the side opposite to the direction of gravity. By flowing through the path, it is possible to flow down on the substrate surface without scattering, improving the evaporation amount of condensed water, and improving the heat dissipation capability of the radiator.

請求項９に記載の発明は、前記放熱器に、重力方向反対側面から重力方向に結露水を流す複数の流路から分岐し重力方向に９０度よりも小さい傾斜角で分岐流路を設けたもので、結露水を飛散させることなく、基板面上を流下させるとともに、分岐流路へ流れることにより、基板の広域に結露水を供給することができ、結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  According to the ninth aspect of the present invention, the radiator is branched from a plurality of channels through which condensed water flows in the direction of gravity from the side opposite to the direction of gravity, and a branch channel is provided at an inclination angle smaller than 90 degrees in the direction of gravity. Therefore, it is possible to supply condensed water over a wide area of the substrate by flowing down the substrate surface without splashing the condensed water and flowing to the branch flow path, improving the evaporation amount of the condensed water, The heat dissipation capability of the radiator can be improved.

請求項１０に記載の発明は、前記放熱器に、前記分岐流路から基板と反対側端面方向に向かってフィン表面上に微細流路を設けたもので、基板面上に設けた分岐流路により基板面上に供給された結露水は、フィン表面上に設けた微細流路の毛細管現象によりフィン表面へと供給することができ、結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  The invention according toclaim 10 is the one in which a fine channel is provided on the fin surface from the branch channel toward the end surface opposite to the substrate in the radiator, and the branch channel provided on the substrate surface Condensed water supplied on the substrate surface by the can be supplied to the fin surface by the capillary phenomenon of the fine flow path provided on the fin surface, improving the evaporation amount of the condensed water and the heat dissipation capacity of the radiator Can be improved.

請求項１１に記載の発明は、内部に貯蔵空間を持つ箱体と、二つの伝熱面を持ち一方が吸熱面としてまた他方が発熱面として働く熱電変換デバイスと、前記吸熱面に熱的に接続され前記箱体内もしくは前記貯蔵空間内に設置された冷却器と、前記発熱面に熱的に接続された放熱器と、冷却器や貯蔵空間内に結露した結露水を前記箱体外へ排出する排水孔と、放熱器に気流を送風する送風装置とから構成され、前記送風装置により反重力方向に気流が放熱器を通過するようにしたものである。  The invention according to claim 11 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 thermally acting on the heat absorption surface. A cooler that is connected and installed in the box or in the storage space, a radiator that is thermally connected to the heat generating surface, and dew condensation in the cooler or the storage space is discharged outside the box. And a blower that blows airflow to the radiator. The blower allows the airflow to pass through the radiator in the antigravity direction.

かかる構成とすることにより、基板面上やフィン表面上を流下する結露水の流下速度を低減することができ、その結果、放熱器による加熱時間を延長させて結露水の蒸発量を向上させるとともに、放熱器の放熱能力を向上させることができる。  By adopting such a configuration, it is possible to reduce the flow rate of the dew condensation water flowing down on the substrate surface and the fin surface, and as a result, the heating time by the radiator is extended and the evaporation amount of the dew condensation water is improved. The heat dissipating ability of the radiator can be improved.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によってこの発明が限定されるものではない。  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の実施の形態１における電子式保冷庫の背面図であり、図２は図１のＡ−Ａ線による断面図である。(Embodiment 1)
FIG. 1 is a rear view of the electronic cool box inEmbodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA in FIG.

図１および図２において、箱体１は断熱箱であって内部に貯蔵空間１ａを持っており、食品や薬品等を収納することができる。  1 and 2, thebox 1 is a heat insulating box and has a storage space 1a inside, and can store food, medicine, and the like.

熱電変換デバイス２は、吸熱面２ａと発熱面２ｂを持っており、冷却器３は吸熱面２ａと熱的に接続されている。  Thethermoelectric conversion device 2 has aheat absorption surface 2a and aheat generation surface 2b, and thecooler 3 is thermally connected to theheat absorption surface 2a.

前記冷却器３は、前記箱体１内部の貯蔵空間１ａ内に設置されている。排水孔４は冷却器３の重力方向側に設置されている。  Thecooler 3 is installed in a storage space 1 a inside thebox 1. Thedrain hole 4 is installed on the gravity direction side of thecooler 3.

放熱器５は、基板６と該基板６と熱的に接続され、前記基板６から略垂直に設けられたフィン７とから構成されており、この放熱器５の重力方向反対側端面８が、前記冷却器３の重力方向側端面よりも重力方向側で、かつ排水孔４の結露水排出口よりも重力方向側で結露水が放熱器５の重力方向反対側端面８に供給できるように設置されている。そして、前記放熱器５は、金属等の熱伝導率の大きい材料で作られており、成形のし易さや安価という観点からアルミニウムやアルミニウム合金が適している。  Theradiator 5 is composed of asubstrate 6 andfins 7 that are thermally connected to thesubstrate 6 and provided substantially perpendicularly from thesubstrate 6. Installed so that the condensed water can be supplied to theend surface 8 on the opposite side in the gravity direction of theradiator 5 on the gravity direction side of thecooler 3 and on the gravity direction side of the condensed water discharge port of thedrain hole 4. Has been. Theradiator 5 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.

また、前記基板６とフィン７は一体で成形されているものがよく、アルミニウム合金を用いた押出成型品が適している。その他、グラファイト等も採用でき、より軽量で高性能化が図れる。また、基板６にはヒートパイプ等の冷媒の相変化を用いた高熱伝導部材を用いても良い。  Thesubstrate 6 and thefins 7 are preferably integrally formed, 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. Thesubstrate 6 may be a high heat conductive member using a phase change of a refrigerant such as a heat pipe.

図３は前記放熱器の正面図、図４は前記放熱器の上面図、図５は図３のＢ−Ｂ線による断面図である。図３から図５を用いて、前記放熱器５の構成を詳細に説明する。  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. The configuration of theradiator 5 will be described in detail with reference to FIGS. 3 to 5.

前記重力方向反対側端面８は、前記排水孔４の結露水供給部から水平方向端面に向かって重力方向に傾斜しており、重力方向反対側端面８上には、前記放熱器５の長手方向に重力方向反対側端面流路９が設けられている。また、前記基板６のフィン７接続面上には、前記重力方向反対側端面８から重力方向に延びる流路１０が設けられており、さらに前記流路１０から分岐し、重力方向に９０度よりも小さい傾斜角で略八の字状に分岐流路１１が設けられている。また、前記分岐流路１１から基板６と反対側端面方向に向かってフィン７表面上に重力方向に傾斜した微細流路１２が設けられている。  The gravitational directionopposite end face 8 is inclined in the gravitational direction from the condensed water supply part of thedrain hole 4 toward the horizontal end face, and the longitudinal direction of theradiator 5 is on the gravitational directionopposite end face 8. Is provided with an endface flow path 9 on the opposite side in the gravity direction. Further, aflow path 10 extending in the gravitational direction from theend face 8 on the opposite side in the gravitational direction is provided on thefin 7 connection surface of thesubstrate 6, and further branched from theflow path 10 to be 90 degrees in the gravitational direction. The branch channel 11 is provided in a substantially eight-letter shape with a small inclination angle. Further, a fine channel 12 inclined in the direction of gravity is provided on the surface of thefin 7 from the branch channel 11 toward the end surface opposite to thesubstrate 6.

熱伝導部材１３は、熱電変換デバイス２の発熱面２ｂと放熱器８の基板６とを熱的に接続しており、本実施の形態では金属材料を用いている。この金属材料は、安価という観点からはアルミニウムが適しており、高熱伝導材料という観点からは銅が適している。  The heat conducting member 13 thermally connects theheat generating surface 2b of thethermoelectric conversion device 2 and thesubstrate 6 of theradiator 8, and a metal material is used in the present embodiment. As the metal material, aluminum is suitable from the viewpoint of low cost, and copper is suitable from the viewpoint of a high thermal conductivity material.

放熱器５に気流を送風する送風装置１４は、前記放熱器５の上方に設置されており、反重力方向に気流が流動するように動作する。本実施の形態では送風装置１４として軸流ファンを用いているが、クロスフローファンなどを用いても良い。  Theblower 14 that blows the airflow to theradiator 5 is installed above theradiator 5 and operates so that the airflow flows in the antigravity direction. In the present embodiment, an axial fan is used as theblower 14, but a cross flow fan or the like may be used.

以上のように構成された電子式保冷庫について、以下その動作、作用を説明する。  The operation and action of the electronic cooler configured as described above will be described below.

熱電変換デバイス２に電流を流すことにより、冷却面２ａが冷却され、冷却器３が冷却される。そして、冷却器側送風装置１５が動作し、これにより貯蔵空間１ａ内の空気と冷却器３と熱交換させ、前記貯蔵空間１ａを冷却する。この時、冷却器３の温度が貯蔵空間１ａ内の空気の露点温度以下になると冷却器３に結露が生じる。この結露水は重力により、冷却器３の重力方向側に設置された排水孔４に収集され、貯蔵空間１ａ外に排出される。  By passing an electric current through thethermoelectric conversion device 2, the coolingsurface 2a is cooled, and thecooler 3 is cooled. And the cooler side air blower 15 operates, and this makes the air in the storage space 1a exchange heat with thecooler 3, and cools the said storage space 1a. At this time, if the temperature of thecooler 3 becomes equal to or lower than the dew point temperature of the air in the storage space 1a, condensation occurs in thecooler 3. This condensed water is collected by gravity into adrain hole 4 installed on the side of thecooler 3 in the direction of gravity, and discharged outside the storage space 1a.

一方、前記熱電変換デバイス２の発熱面２ｂは発熱し、熱伝導部材１３を介して、放熱器５の基板６に熱が伝わり、フィン７に熱が拡がる。この時、排水孔４を通り、重力によって重力方向反対側端面８に供給された結露水は、重力方向反対側端面流路９へと入る。  On the other hand, theheat generating surface 2 b of thethermoelectric conversion device 2 generates heat, and heat is transmitted to thesubstrate 6 of theradiator 5 through the heat conducting member 13, and the heat spreads to thefins 7. At this time, the condensed water supplied to theend surface 8 on the opposite side in the gravity direction through thedrain hole 4 enters the endsurface flow path 9 on the opposite side in the gravity direction.

その結果、重力方向反対側端面８が結露水供給部から水平方向端面に向かって重力方向に傾斜しているため、結露水は一部を流路１０に分流しながら、重力により水平方向端面に向かって流れ、放熱器５の水平方向へ拡がる。  As a result, theend surface 8 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. It flows toward the horizontal direction of theradiator 5.

次に、前記流路１０に分流された結露水は基板６上を重力方向へと流れ、略八の字状の分岐流路１１に分流され、前記基板６全体に拡がる。その後、分岐流路１１を流れる結露水は毛細管力と重力により、フィン表面上微細流路１２へ供給され、フィン７全体へと拡がる。  Next, the dew condensation water divided into theflow path 10 flows in the direction of gravity on thesubstrate 6, is divided into a substantially eight-shaped branch flow path 11, and spreads over theentire substrate 6. Thereafter, the condensed water flowing through the branch channel 11 is supplied to the fine channel 12 on the fin surface by capillary force and gravity, and spreads over theentire fin 7.

このように、結露水は放熱器５全体へと拡がるとともに、前述した熱電デバイス２の発熱面２ｂの熱が放熱器５へと伝わり、結露水を加熱し、蒸発させる。さらに、放熱器側送風装置１４により、反重力方向へ放熱器５内に気流を流すことにより、結露水の流下速度を小さくし、前記放熱器５による加熱時間を延長するとともに、気流により結露水の蒸発を促進することができる。  As described above, the dew condensation water spreads over theentire radiator 5, and the heat of theheat generating surface 2 b of thethermoelectric device 2 described above is transmitted to theheat radiator 5 to heat and evaporate the dew condensation water. Further, theair blower 14 causes the airflow to flow in theheat sink 5 in the anti-gravity direction, thereby reducing the flow speed of the dew condensation water, extending the heating time by theheat sink 5 and the dew condensation water by the air flow. Can promote evaporation.

以上のように本実施の形態は、放熱器５の重力方向反対側端面８が、冷却器３重力方向側端面よりも重力方向側に設置され、また、排水孔４から排出される結露水が、前記放熱器５の重力方向反対側端面流路９に供給できるように設置するとともに、前記放熱器５は、基板６とフィン７から構成され、さらに、前記放熱器５の重力方向反対側端面８が結露水供給部から水平方向端面に向かって重力方向に傾斜しており、重力方向反対側端面８から重力方向に結露水を流す流路１０を放熱器５の基板６のフィン７接続表面上に設け、また、前記流路１０から分岐し、かつ重力方向に９０度よりも小さい傾斜角で分岐流路１１を設け、さらに基板６と反対側端面方向に向かってフィン７表面上に微細流路１２を設けたものである。また、本実施の形態は、金属製の熱伝導部材１３で熱電変換デバイス２の発熱面２ｂと放熱器８の基板６とを熱的に接続し、放熱器側送風装置１４で反重力方向へ放熱器５内に気流を流すようにしたものである。  As described above, in the present embodiment, theend surface 8 opposite to the gravitational direction of theradiator 5 is installed closer to the gravitational direction side than the end surface of thecooler 3 in the gravitational direction, and the condensed water discharged from thedrain hole 4 is Theradiator 5 is installed so that it can be supplied to the endsurface flow path 9 on the opposite side in the gravitational direction, and theradiator 5 is composed of asubstrate 6 andfins 7, and the end surface on the opposite side in the gravitational direction of theradiator 5. 8 is inclined in the gravitational direction from the dew condensation water supply unit toward the horizontal end surface, and theflow path 10 through which the dew condensate flows from theend surface 8 opposite to the gravitational direction in the gravitational direction is connected to thefin 7 connection surface of thesubstrate 6 of theradiator 5. The branch channel 11 is provided at a tilt angle smaller than 90 degrees in the direction of gravity and branched from thechannel 10, and further finely formed on the surface of thefin 7 toward the end surface opposite to thesubstrate 6. A flow path 12 is provided. Further, in the present embodiment, theheat generating surface 2b of thethermoelectric conversion device 2 and thesubstrate 6 of theradiator 8 are thermally connected by the metal heat conducting member 13, and theradiator side blower 14 moves in the antigravity direction. An air flow is made to flow in theradiator 5.

これらの構成により、冷却器３で生じた結露水を放熱器５全体に拡げ、加熱時間を延長し、熱電変換デバイス２の発熱面２ｂの発熱で蒸発させる結露水量を大幅に向上することができるとともに、蒸発潜熱を用いて放熱することにより放熱器５の放熱能力も向上することができる。  With these configurations, the condensed water generated in the cooler 3 can be spread over theentire radiator 5, the heating time can be extended, and the amount of condensed water evaporated by the heat generated on theheat generating surface 2 b of thethermoelectric conversion device 2 can be greatly improved. At the same time, the heat dissipation capability of theradiator 5 can be improved by dissipating heat using latent heat of vaporization.

（実施の形態２）
次に、実施の形態２について説明するが、先の実施の形態１と同一の構成のものについては同一の符号を付して詳細な説明は省略する。図６は、本発明の本実施の形態２における電子式保冷庫の側断面図である。(Embodiment 2)
Next, the second embodiment will be described. The same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 6 is a side sectional view of the electronic cool box in the second embodiment of the present invention.

熱伝導部材１６はヒートパイプで構成されており、熱電変換デバイス２の発熱面２ｂと放熱器５の基板６とを熱的に接続している。  The heat conducting member 16 is formed of a heat pipe, and thermally connects theheat generating surface 2b of thethermoelectric conversion device 2 and thesubstrate 6 of theradiator 5.

以上のように構成された電子式保冷庫について、以下実施の形態１と異なる動作、作用を説明する。  Regarding the electronic cooler configured as described above, operations and effects different from those of the first embodiment will be described below.

熱電変換デバイス２の発熱面２ｂの発熱をヒートパイプ製熱伝導部材１６に伝え、放熱器５の基板６に伝える。この時、熱伝導部材１６はヒートパイプ内の冷媒の蒸発潜熱を利用し熱搬送を行うため、非常に効率よく、大量に熱を伝えることができる。  Heat generated from theheat generating surface 2 b of thethermoelectric conversion device 2 is transmitted to the heat conducting member 16 made of heat pipe and transmitted to thesubstrate 6 of theradiator 5. At this time, since the heat conducting member 16 performs heat transfer using the latent heat of vaporization of the refrigerant in the heat pipe, heat can be transferred in a large amount with high efficiency.

以上のように本実施の形態ではヒートパイプ製の熱伝導部材１６で構成されたことにより、発熱面２ｂの発熱を放熱器５に効率よく、大量に伝えることができ、結露水の蒸発量を向上させるとともに、放熱器５の放熱量を向上することができる。  As described above, in the present embodiment, the heat conduction member 16 made of heat pipe can efficiently transmit a large amount of heat generated on theheat generating surface 2b to theradiator 5, and the amount of condensation water evaporated can be reduced. While improving, the thermal radiation amount of theheat radiator 5 can be improved.

以上のように、本発明にかかる電子式保冷庫は、結露水を蒸発させ排出することが可能となるので、電子式冷温庫や冷蔵庫、薬品保管庫や理化学機器等の用途にも適用できる。  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.

本発明の実施の形態１における電子式保冷庫の背面図The rear view of the electronic cold storage inEmbodiment 1 of this invention図１のＡ−Ａ線による断面図Sectional view by the AA line of FIG.本発明の実施の形態１における電子式保冷庫に用いた放熱器の正面図Front view of a radiator used in the electronic cool box inEmbodiment 1 of the present invention本発明の実施の形態１における電子式保冷庫に用いた放熱器の上面図Top view of a radiator used in the electronic cool box inEmbodiment 1 of the present invention図３のＢ−Ｂ線による断面図Sectional view by the BB line of FIG.本発明の実施の形態２における電子式保冷庫の側断面図Side sectional view of the electronic cold storage inEmbodiment 2 of the present invention従来の冷温庫の側断面図Side cross-sectional view of conventional cold storage

符号の説明Explanation of symbols

１ 箱体
２ 熱電変換デバイス
２ａ 冷却面
２ｂ 発熱面
３ 冷却器
４ 排水孔
５ 放熱器
６ 基板
７ フィン
８ 重力方向反対側端面
９ 重力方向反対側端面流路
１０ 流路
１１ 分岐流路
１２ フィン表面上微細流路
１３ 熱伝導部材
１４ 放熱器側送風装置
１６ 熱伝導部材DESCRIPTION OFSYMBOLS 1Box 2Thermoelectric conversion device2a Cooling surface 2bHeat generating surface 3Cooler 4Drain hole 5Radiator 6Substrate 7Fin 8 Gravity direction oppositeside end surface 9 Gravity direction opposite side endsurface flow channel 10 Flow channel 11 Branching flow channel 12 Fin surface Upper fine flow path 13Heat conduction member 14 Radiator-side air blower 16 Heat conduction member

Claims (11)

Translated fromJapanese

内部に貯蔵空間を持つ箱体と、二つの伝熱面を持ち一方が吸熱面としてまた他方が発熱面として働く熱電変換デバイスと、前記吸熱面に熱的に接続され前記箱体内もしくは前記貯蔵空間内に設置された冷却器と、前記発熱面に熱的に接続された放熱器と、前記冷却器や前記貯蔵空間内に結露した結露水を前記箱体外へ排出する排水孔とから構成され、前記放熱器の重力方向反対側端面が前記冷却器重力方向側端面よりも重力方向側に設置され、前記排水孔から排出される結露水が前記放熱器の重力方向反対側端面に送られるように構成された電子式保冷庫。  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, and a drainage hole for discharging condensed water condensed in the cooler and the storage space to the outside of the box. The end surface on the opposite side in the gravity direction of the radiator is installed on the gravity direction side with respect to the end surface on the gravity direction side of the cooler, and the condensed water discharged from the drain hole is sent to the end surface on the opposite side in the gravity direction of the radiator. Electronic cooler configured in 前記放熱器は、基板と前記基板と熱的に接続されたフィンとから構成された請求項１に記載の電子式保冷庫。  The electronic cooler according to claim 1, wherein the radiator is composed of a substrate and fins that are thermally connected to the substrate. 前記熱電変換デバイスの発熱面と前記放熱器とが熱良導材料で熱的に接続された請求項１または２のいずれかに記載の電子式保冷庫。  The electronic cool box according to claim 1 or 2, wherein the heat generating surface of the thermoelectric conversion device and the radiator are thermally connected with a heat conductive material. 前記熱良導材料を、金属材料とした請求項３に記載の電子式保冷庫。  The electronic cool box according to claim 3, wherein the heat conducting material is a metal material. 前記熱良導材料を、ヒートパイプより構成した請求項３に記載の電子式保冷庫。  The electronic cool box according to claim 3, wherein the heat conducting material is constituted by a heat pipe. 重力方向反対側端面が結露水供給部から水平方向端面に向かって重力方向に傾斜した放熱器から構成されたことを特徴とする請求項２から５のいずれか一項に記載の電子式保冷庫。  The electronic cool box according to any one of claims 2 to 5, wherein the end surface on the opposite side in the gravitational direction is composed of a radiator that is inclined in the gravitational direction from the dew condensation water supply unit toward the horizontal end surface. . 前記放熱器に、重力方向反対側端面に結露水が流れる流路を設けた請求項１から６のいずれか一項に記載の電子式保冷庫。  The electronic cool box as described in any one of Claim 1 to 6 which provided the flow path through which condensed water flows in the said heat radiator at the gravity direction opposite end surface. 前記放熱器の基板のフィン接続表面上に、重力方向反対側面から重力方向に結露水を流す流路を設けた請求項１から７のいずれか一項に記載の電子式保冷庫。  The electronic cool box according to any one of claims 1 to 7, wherein a flow path for allowing condensed water to flow in the direction of gravity from a side surface opposite to the direction of gravity is provided on the fin connection surface of the substrate of the radiator. 前記放熱器に、重力方向反対側面から重力方向に結露水を流す複数の流路から分岐し重力方向に９０度よりも小さい傾斜角で分岐流路を設けた請求項８に記載の電子式保冷庫。  9. The electronic cold insulation according to claim 8, wherein the radiator is provided with a branch flow path branched from a plurality of flow paths through which condensed water flows from the side opposite to the gravitational direction in the gravitational direction at an inclination angle smaller than 90 degrees in the gravitational direction. Warehouse. 前記分岐流路から基板と反対側端面方向に向かってフィン表面上に微細流路を設けたから構成されたことを特徴とする請求項９に記載の電子式保冷庫。  The electronic cool box according to claim 9, wherein a fine flow path is provided on the fin surface from the branch flow path toward the end surface opposite to the substrate. 内部に貯蔵空間を持つ箱体と、二つの伝熱面を持ち一方が吸熱面としてまた他方が発熱面として働く熱電変換デバイスと、前記吸熱面に熱的に接続され前記箱体内もしくは前記貯蔵空間内に設置された冷却器と、前記発熱面に熱的に接続された放熱器と、冷却器や貯蔵空間内に結露した結露水を前記箱体外へ排出する排水孔と、放熱器に気流を送風する送風装置とから構成され、前記送風装置により反重力方向に気流が放熱器を通過する請求項１から１０のいずれか一項に記載の電子式保冷庫。  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 heat generating surface, a drain hole for discharging condensed water condensed in the cooler or the storage space to the outside of the box, and an air flow to the radiator The electronic cool box according to any one of claims 1 to 10, wherein an air current passes through a radiator in an antigravity direction by the blower.

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