JP2010223497A - Peltier type cooling unit - Google Patents
Peltier type cooling unit Download PDFInfo
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- JP2010223497A JP2010223497A JP2009071211A JP2009071211A JP2010223497A JP 2010223497 A JP2010223497 A JP 2010223497A JP 2009071211 A JP2009071211 A JP 2009071211A JP 2009071211 A JP2009071211 A JP 2009071211A JP 2010223497 A JP2010223497 A JP 2010223497A
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Abstract
Description
本発明は、ペルチェ素子とファンとを組み合わせたペルチェ式冷却ユニットに関するものである。 The present invention relates to a Peltier cooling unit that combines a Peltier element and a fan.
ペルチェ式冷却ユニットは、例えば電子機器収納用キャビネットの内部温度上昇を防止するような用途に広く用いられている。ペルチェ式冷却ユニットはペルチェ素子の両面にそれぞれヒートシンクを接合するとともに、これらのヒートシンクと盤内空気あるいは外気との間の熱移動を促進するためのファンを備えたものが一般的（特許文献１）である。 Peltier-type cooling units are widely used for applications that prevent an increase in the internal temperature of an electronic device storage cabinet, for example. A Peltier-type cooling unit generally includes a heat sink bonded to both sides of a Peltier element and a fan for promoting heat transfer between the heat sink and the air in the panel or outside air (Patent Document 1). It is.
一般的なペルチェ素子は１枚当たりの冷却能力が小さいため、上記のような工業的用途に用いる場合には、図１に示すように複数のペルチェ素子１を直列に接続してペルチェ素子群２を形成し、各ペルチェ素子１に印加される電圧を許容電圧の６０％程度として使用する場合が多い。ペルチェ素子は当然ながら直流電源により駆動される。このため吸熱用ファン３と放熱用ファン４にも直流モータを使用し、同一の直流電源部５により駆動することが設備設計上好ましい。 Since a general Peltier element has a small cooling capacity per sheet, when used in the industrial application as described above, a plurality of Peltier elements 1 are connected in series as shown in FIG. And the voltage applied to each Peltier element 1 is often used as about 60% of the allowable voltage. Naturally, the Peltier element is driven by a DC power source. For this reason, it is preferable in terms of facility design that a direct current motor is used for both the heat absorbing fan 3 and the heat radiating fan 4 and is driven by the same direct current power supply unit 5.
ところがその場合には、ペルチェ素子１の冷却能力を上げるためにペルチェ素子群２への印加電圧を高めると、ファン３，４への印加電圧も高まる。そのためファン３，４の消費電力が多くなり、成績係数（ＣＯＰ）が下がってしまうという問題があった。ここでＣＯＰとは吸熱量を投入電力量で割った値であり、ペルチェ式冷却装置ではＣＯＰは０．５程度の低い値であるから、ＣＯＰを更に低下させることは好ましくない。 However, in this case, if the voltage applied to the Peltier element group 2 is increased in order to increase the cooling capacity of the Peltier element 1, the voltage applied to the fans 3 and 4 also increases. Therefore, there is a problem that the power consumption of the fans 3 and 4 increases and the coefficient of performance (COP) decreases. Here, COP is a value obtained by dividing the amount of heat absorbed by the amount of input electric power, and in the Peltier cooling device, COP is a low value of about 0.5, so it is not preferable to further reduce COP.
また、ファン３，４に印加される電圧を低下させるために、ファンと直列に調整抵抗を入れたファン駆動回路を用いることも行われている。ところがこの調整抵抗を流れる電流によって余分な熱量が発生するため、投入電力量が増加してＣＯＰを更に低下させることとなって好ましくない。 In order to reduce the voltage applied to the fans 3 and 4, a fan drive circuit in which an adjustment resistor is inserted in series with the fan is also used. However, an excessive amount of heat is generated by the current flowing through the adjustment resistor, which is not preferable because the amount of input power is increased and the COP is further reduced.
本発明は上記した従来の問題点を解決し、ペルチェ素子群への印加電圧を高めた場合にもファン駆動回路において余分な消費電力が発生せず、ＣＯＰの低下を防止することができるペルチェ式冷却ユニットを提供することを目的とするものである。 The present invention solves the above-described conventional problems, and even when the voltage applied to the Peltier element group is increased, no extra power consumption is generated in the fan drive circuit, and the COP can be prevented from lowering. The object is to provide a cooling unit.
上記の課題を解決するためになされた本発明は、ペルチェ素子とファンとを組み合わせたペルチェ式冷却ユニットであって、複数のペルチェ素子を直列接続したペルチェ素子群と、ファンと直列に少なくとも１つのペルチェ素子を接続し、前記ペルチェ素子群に並列に接続するファン駆動回路と、これらのペルチェ素子群およびファン駆動回路に直流電源を供給する直流電源部と、を備えたことを特徴とするものである。 The present invention made to solve the above-mentioned problems is a Peltier cooling unit that combines a Peltier element and a fan, and includes a Peltier element group in which a plurality of Peltier elements are connected in series, and at least one in series with the fan. A fan driving circuit for connecting Peltier elements and connecting them in parallel to the Peltier element group, and a DC power supply unit for supplying DC power to these Peltier element groups and the fan driving circuit are provided. is there.
また請求項２のように、ファン駆動回路は、吸熱用ファンと放熱用ファンとの並列接続回路に、少なくとも１つのペルチェ素子を直列に接続し、さらにこのペルチェ素子と並列に調整抵抗を接続したものとすることができる。 In the fan drive circuit, at least one Peltier element is connected in series to the parallel connection circuit of the heat absorption fan and the heat dissipation fan, and an adjustment resistor is connected in parallel to the Peltier element. Can be.
本発明のペルチェ式冷却ユニットは、複数のペルチェ素子を直列接続したペルチェ素子群と、ファンと直列に少なくとも１つのペルチェ素子を接続し、前記ペルチェ素子群に並列に接続するファン駆動回路とを備えたものであり、ペルチェ素子群への印加電圧を高めた場合にも、ファン駆動回路のペルチェ素子による電圧降下分だけ、ファンに印加される電圧を低下させることができる。このためファン駆動回路において従来のような余分な消費電力が発生しない。またファン駆動回路のペルチェ素子も冷却効果を発揮するうえ、ペルチェ素子群を構成するペルチェ素子数を減少させることによって個々のペルチェ素子への印加電圧が高まるために冷却能力を上げることができ、全体としてＣＯＰを向上させることができる。 A Peltier-type cooling unit according to the present invention includes a Peltier element group in which a plurality of Peltier elements are connected in series, and a fan drive circuit in which at least one Peltier element is connected in series with the fan and connected in parallel to the Peltier element group. Therefore, even when the voltage applied to the Peltier element group is increased, the voltage applied to the fan can be reduced by the voltage drop due to the Peltier element of the fan drive circuit. Therefore, no extra power consumption is generated in the fan drive circuit as in the prior art. In addition, the Peltier element of the fan drive circuit exhibits a cooling effect, and by reducing the number of Peltier elements constituting the Peltier element group, the applied voltage to each Peltier element increases, so that the cooling capacity can be increased. COP can be improved.
請求項２の発明によれば、ファンへの印加電圧およびペルチェ素子への印加電圧を調整抵抗によって調整することができ、しかも調整抵抗の抵抗値をペルチェ素子の抵抗値よりも十分に高くしておくことにより調整抵抗を流れる電流を小さくし、調整抵抗における無駄な発熱を小さくすることができる。 According to the second aspect of the present invention, the applied voltage to the fan and the applied voltage to the Peltier element can be adjusted by the adjusting resistor, and the resistance value of the adjusting resistor is made sufficiently higher than the resistance value of the Peltier element. Accordingly, the current flowing through the adjustment resistor can be reduced, and wasteful heat generation in the adjustment resistor can be reduced.
以下に本発明の実施形態を説明する。
第１の実施形態を示す図２において、１０は複数のペルチェ素子１１を直列接続したペルチェ素子群、１２はファン駆動回路、１３は直流電源部である。ペルチェ素子群を構成するペルチェ素子１１の数は図１では８であったが図２では７であり、１つのペルチェ素子１１はファン駆動回路１２に移動させてある。なお本発明においては、ファン駆動回路１２のペルチェ素子１１は必ずしも１個である必要はない。
Embodiments of the present invention will be described below.
In FIG. 2 showing the first embodiment, 10 is a Peltier element group in which a plurality of Peltier elements 11 are connected in series, 12 is a fan drive circuit, and 13 is a DC power supply unit. The number of Peltier elements 11 constituting the Peltier element group is 8 in FIG. 1, but is 7 in FIG. 2. In the present invention, the number of Peltier elements 11 of the fan drive circuit 12 is not necessarily one.
ファン駆動回路１２は並列接続された吸熱用ファン１４と放熱用ファン１５とを含むものであり、１つのペルチェ素子１１がこれらのファン１４，１５と直列に接続されている。またこのペルチェ素子１１と並列に、調整抵抗１６が接続されている。直流電源部１３は、これらのペルチェ素子群１０とファン駆動回路１２とに同一電圧を印加するが、この実施形態では通常の２４Ｖの１．１倍の２６．４Ｖを供給している。なお請求項１の発明においては、直流電源部１３は必ずしも単一とする必要はないが、直流電源部１３を単一とすることによりコストダウンや設備の小型化を図ることができ、好ましい。 The fan drive circuit 12 includes a heat absorbing fan 14 and a heat radiating fan 15 connected in parallel, and one Peltier element 11 is connected in series with these fans 14 and 15. An adjustment resistor 16 is connected in parallel with the Peltier element 11. The DC power supply unit 13 applies the same voltage to the Peltier element group 10 and the fan drive circuit 12, but in this embodiment, 26.4V which is 1.1 times the normal 24V is supplied. In the first aspect of the present invention, the DC power supply unit 13 is not necessarily required to be a single unit. However, it is preferable that the DC power supply unit 13 be a single unit because costs can be reduced and the equipment can be downsized.
この図１の回路においては、ペルチェ素子群１０を構成するペルチェ素子１１には従来は３．０Ｖが印加されていたのに対してこの実施形態では約３．８Ｖが印加されることとなり、ペルチェ式冷却ユニットの冷却能力を高めることができる。またファン駆動回路１２の吸熱用ファン１４と放熱用ファン１５には従来と同様の２４Ｖ，ファン駆動回路１２のペルチェ素子１１には２．４Ｖを印加することができ、ファン駆動回路１２のファンに余分の電圧を加えることもないため、余分な消費電力が発生しない。このように本発明においてはファンと直列に少なくとも１つのペルチェ素子１１を接続することによって、ペルチェ素子群１１への印加電圧を高めた場合にも、ファン駆動回路１２において従来のような余分な消費電力が発生しない。このため、ペルチェ式冷却ユニットのＣＯＰを向上させることができる。 In the circuit of FIG. 1, 3.0 V is applied to the Peltier elements 11 constituting the Peltier element group 10 in the past, whereas in this embodiment, about 3.8 V is applied. The cooling capacity of the type cooling unit can be increased. Further, 24 V as in the conventional case can be applied to the heat absorbing fan 14 and the heat radiating fan 15 of the fan driving circuit 12 and 2.4 V can be applied to the Peltier element 11 of the fan driving circuit 12. Since no extra voltage is applied, no extra power consumption occurs. As described above, in the present invention, even when the applied voltage to the Peltier element group 11 is increased by connecting at least one Peltier element 11 in series with the fan, the fan drive circuit 12 has an extra consumption as in the prior art. No power is generated. For this reason, COP of a Peltier type cooling unit can be improved.
なお、調整抵抗１６の抵抗値をペルチェ素子１１の抵抗値よりも十分に大きく、例えば８倍程度に設定すれば、調整抵抗１６とペルチェ素子１１との並列回路においては大部分の電流がペルチェ素子１１に流れ、調整抵抗１６に流れる電流は小さい。このため調整抵抗１６の発熱量も十分に小さくすることができる。 If the resistance value of the adjustment resistor 16 is sufficiently larger than the resistance value of the Peltier element 11, for example, about 8 times, the majority of the current flows in the parallel circuit of the adjustment resistor 16 and the Peltier element 11. 11 and the current flowing through the adjustment resistor 16 is small. For this reason, the calorific value of the adjusting resistor 16 can be sufficiently reduced.
上記した第１の実施形態では、ペルチェ素子１１と並列に調整抵抗１６を接続したのであるが、図３に示す第２の実施形態では、吸熱用ファン１４と放熱用ファン１５とにそれぞれ直列にペルチェ素子１１を接続した。これによって調整抵抗１６の発熱をなくし、ペルチェ式冷却ユニットの冷却能力およびＣＯＰをさらに向上させることができる。なお図２における調整抵抗１６をペルチェ素子１１に置換し、ペルチェ素子１１どうしを並列接続してもよい。 In the first embodiment described above, the adjustment resistor 16 is connected in parallel with the Peltier element 11, but in the second embodiment shown in FIG. 3, the heat absorption fan 14 and the heat dissipation fan 15 are respectively connected in series. A Peltier element 11 was connected. As a result, the adjustment resistor 16 can be prevented from generating heat, and the cooling capacity and COP of the Peltier cooling unit can be further improved. 2 may be replaced with the Peltier element 11, and the Peltier elements 11 may be connected in parallel.
図４と図５は、本発明を実機に適用した実施形態を示す図である。この実施形態では、図４に示すようにヒートシンク２０に各４枚のペルチェ素子１１を配置した冷却ユニットを２つ接続してあり、合計８つのペルチェ素子１１のうちの７つを直列に接続し、ペルチェ素子群１０を構成している。また吸熱側よりも大きい能力を要求される放熱用ファン１５を２台として並列に接続し、吸熱用ファン１４は１台としてある。またファン駆動回路１２には１つのペルチェ素子１１が直列接続されている。また調整抵抗１６がこのペルチェ素子１１と並列接続されている。なお直流電源部１３は、これらのペルチェ素子群１０とファン駆動回路１２とに同一の直流２４Ｖを印加する。 4 and 5 are diagrams showing an embodiment in which the present invention is applied to an actual machine. In this embodiment, as shown in FIG. 4, two cooling units each including four Peltier elements 11 are connected to the heat sink 20, and seven of the total eight Peltier elements 11 are connected in series. The Peltier element group 10 is configured. Further, two heat dissipating fans 15 that are required to have a larger capacity than the heat absorbing side are connected in parallel, and the heat absorbing fan 14 is one. In addition, one Peltier element 11 is connected to the fan drive circuit 12 in series. An adjustment resistor 16 is connected in parallel with the Peltier element 11. The DC power supply unit 13 applies the same DC 24V to the Peltier element group 10 and the fan drive circuit 12.
図５に示すように、ペルチェ式冷却ユニットの筐体３０の放熱側には２台の放熱用ファン１５が配置され、吸熱側には１台の吸熱用ファン１４が配置されている。また筐体３０の放熱側には、制御回路基板３１と電源回路基板３２とが搭載されている。 As shown in FIG. 5, two heat dissipating fans 15 are disposed on the heat dissipating side of the casing 30 of the Peltier cooling unit, and one heat absorbing fan 14 is disposed on the heat absorbing side. A control circuit board 31 and a power circuit board 32 are mounted on the heat dissipation side of the housing 30.
このようなペルチェ式冷却ユニットは、電子機器収納用キャビネット等に取り付けられて盤内温度の上昇を抑制するために用いられる。 Such a Peltier-type cooling unit is attached to an electronic equipment storage cabinet or the like and used to suppress an increase in the temperature inside the panel.
１ ペルチェ素子
２ ペルチェ素子群
３ 吸熱用ファン
４ 放熱用ファン
５ 直流電源部
１０ ペルチェ素子群
１１ ペルチェ素子
１２ ファン駆動回路
１３ 直流電源部
１４ 吸熱用ファン
１５ 放熱用ファン
１６ 調整抵抗
２０ ヒートシンク
３０ ペルチェ式冷却ユニットの筐体
３１ 制御回路基板
３２ 電源回路基板
DESCRIPTION OF SYMBOLS 1 Peltier element 2 Peltier element group 3 Fan for heat absorption 4 Fan for heat dissipation 5 DC power supply part 10 Peltier element group 11 Peltier element 12 Fan drive circuit 13 DC power supply part 14 Heat absorption fan 15 Heat dissipation fan 16 Adjustment resistor 20 Heat sink 30 Peltier type Cooling unit casing 31 Control circuit board 32 Power supply circuit board
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009071211A JP5234645B2 (en) | 2009-03-24 | 2009-03-24 | Peltier cooling unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009071211A JP5234645B2 (en) | 2009-03-24 | 2009-03-24 | Peltier cooling unit |
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| Publication Number | Publication Date |
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| JP2010223497A true JP2010223497A (en) | 2010-10-07 |
| JP5234645B2 JP5234645B2 (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2009071211A Expired - Fee Related JP5234645B2 (en) | 2009-03-24 | 2009-03-24 | Peltier cooling unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9868672B2 (en) | 2014-07-17 | 2018-01-16 | Murata Manufacturing Co., Ltd. | Ceramic material |
| US10544061B2 (en) | 2015-02-27 | 2020-01-28 | Murata Manufacturing Co., Ltd. | Vanadium dioxide |
| JP7011876B1 (en) | 2021-04-28 | 2022-01-27 | 株式会社Susa Inc. | Electronics |
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| JPH0510644A (en) * | 1991-07-04 | 1993-01-19 | Toshiba Corp | Electronic refrigerator |
| JPH06207771A (en) * | 1992-10-19 | 1994-07-26 | Mitsubishi Electric Corp | Cold and hot storage chamber |
| JP2001330339A (en) * | 2000-05-19 | 2001-11-30 | Gac Corp | Peltier cooling unit and device |
| JP2005129748A (en) * | 2003-10-24 | 2005-05-19 | Nitto Electric Works Ltd | Electronic cooling device |
| JP2007043075A (en) * | 2005-07-04 | 2007-02-15 | Denso Corp | Thermoelectric conversion device |
| JP2008141089A (en) * | 2006-12-05 | 2008-06-19 | Nitto Electric Works Ltd | Peltier type cooling device for container |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0343313U (en) * | 1989-03-13 | 1991-04-23 | ||
| JPH0510644A (en) * | 1991-07-04 | 1993-01-19 | Toshiba Corp | Electronic refrigerator |
| JPH06207771A (en) * | 1992-10-19 | 1994-07-26 | Mitsubishi Electric Corp | Cold and hot storage chamber |
| JP2001330339A (en) * | 2000-05-19 | 2001-11-30 | Gac Corp | Peltier cooling unit and device |
| JP2005129748A (en) * | 2003-10-24 | 2005-05-19 | Nitto Electric Works Ltd | Electronic cooling device |
| JP2007043075A (en) * | 2005-07-04 | 2007-02-15 | Denso Corp | Thermoelectric conversion device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9868672B2 (en) | 2014-07-17 | 2018-01-16 | Murata Manufacturing Co., Ltd. | Ceramic material |
| US10544061B2 (en) | 2015-02-27 | 2020-01-28 | Murata Manufacturing Co., Ltd. | Vanadium dioxide |
| JP7011876B1 (en) | 2021-04-28 | 2022-01-27 | 株式会社Susa Inc. | Electronics |
| JP2022170654A (en) * | 2021-04-28 | 2022-11-10 | 株式会社Susa Inc. | Electronic apparatus |
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| JP5234645B2 (en) | 2013-07-10 |
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