JP2011021868A - Heat exchanger for heat pump water heater - Google Patents

Heat exchanger for heat pump water heater Download PDF

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JP2011021868A
JP2011021868A JP2009183849A JP2009183849A JP2011021868A JP 2011021868 A JP2011021868 A JP 2011021868A JP 2009183849 A JP2009183849 A JP 2009183849A JP 2009183849 A JP2009183849 A JP 2009183849A JP 2011021868 A JP2011021868 A JP 2011021868A
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heat exchanger
refrigerant
water
refrigerant heat
water heater
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JP5547439B2 (en
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Masanobu Saito
正信 斉藤
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Atago Seisakusho Co Ltd
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Atago Seisakusho Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger for a heat pump water heater for heating water through heat exchange with a high temperature/high pressure refrigerant in a water-refrigerant heat exchanger 13 which contributes to simplifying the piping and assembly of a heat pump water heater having in a refrigerant circuit 11 a refrigerant heat exchanger 17 for heat exchange between a refrigerant to be supplied to a compressor 12 and a refrigerant flowing out from the water-refrigerant heat exchanger 13, and contributes to downsizing the apparatus by dispensing with the storage space for the refrigerant heat exchanger 17. <P>SOLUTION: The water-refrigerant heat exchanger 13 is formed in tubular shape, and the refrigerant heat exchanger 17 formed in columnar shape is inserted in the cylindrical space, so that the water-refrigerant heat exchanger 13 and the refrigerant heat exchanger 17 are integrally assembled. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

この発明は、高温高圧冷媒（ＣＯ２冷媒）を熱源とするヒートポンプ式給湯機の熱交換器に関するものである。  The present invention relates to a heat exchanger for a heat pump type hot water heater using a high-temperature and high-pressure refrigerant (CO2 refrigerant) as a heat source.

冷媒を熱源とするヒートポンプ式給湯機は、水冷媒熱交換器で高温高圧冷媒と熱交換して水を加熱するもので、より高温の給湯を得るために、圧縮機に供給される冷媒と、水冷媒熱交換器から流出する冷媒とが熱交換する冷媒熱交換器が冷媒回路に設けられる（特許文献１参照）。これは、水冷媒熱交換器を経た冷媒中の潜熱で圧縮機に供給される冷媒を予熱し、水冷媒熱交換器へ流入する冷媒をより高温とすることで、給湯温度の高温化を図るものである。  A heat pump type hot water heater using a refrigerant as a heat source heats water by exchanging heat with a high-temperature and high-pressure refrigerant in a water-refrigerant heat exchanger, and in order to obtain hot water supply, a refrigerant supplied to the compressor, A refrigerant heat exchanger that exchanges heat with the refrigerant flowing out of the water refrigerant heat exchanger is provided in the refrigerant circuit (see Patent Document 1). This preheats the refrigerant supplied to the compressor with the latent heat in the refrigerant that has passed through the water refrigerant heat exchanger, and raises the temperature of the hot water supply temperature by raising the temperature of the refrigerant flowing into the water refrigerant heat exchanger. Is.

図７に、こうしたヒートポンプ式給湯機の構成を示す。図に示すように、ヒートポンプ式給湯機は、ＣＯ２冷媒が循環する冷媒回路１１を備えた室外ユニット１０と、貯湯タンク２１を備えた貯湯ユニット２０とを接続して全体が構成される。冷媒回路１１に、圧縮機１２、凝縮器としての水冷媒熱交換器１３、膨張弁１４、蒸発器としての冷媒空気熱交換器１５が環状に配管され、圧縮機１２に供給される冷媒と、水冷媒熱交換器１３から流出する冷媒とが熱交換する冷媒熱交換器１７が設けられている。  FIG. 7 shows the configuration of such a heat pump type hot water heater. As shown in the drawing, the heat pump type hot water heater is configured as a whole by connecting an outdoor unit 10 including a refrigerant circuit 11 in which a CO2 refrigerant circulates and a hot water storage unit 20 including a hot water storage tank 21. In the refrigerant circuit 11, a compressor 12, a water refrigerant heat exchanger 13 as a condenser, an expansion valve 14, and a refrigerant air heat exchanger 15 as an evaporator are annularly piped, and the refrigerant supplied to the compressor 12; A refrigerant heat exchanger 17 for exchanging heat with the refrigerant flowing out of the water refrigerant heat exchanger 13 is provided.

貯湯タンク２１と水冷媒熱交換器１２との間を循環水が流通する循環路２２にポンプ２３が設けられ、水冷媒熱交換器１２で加熱された高温水が貯湯タンク２１に貯湯される。貯湯タンク２１の上部に給湯管２４が配管され、風呂、台所等の給湯栓２５の開閉操作で出湯し、貯湯タンク２１の下部に給水管２６が配管され、貯湯タンク２１へ所要量給水される。  A pump 23 is provided in a circulation path 22 through which circulating water flows between the hot water storage tank 21 and the water refrigerant heat exchanger 12, and hot water heated by the water refrigerant heat exchanger 12 is stored in the hot water storage tank 21. A hot water supply pipe 24 is piped at the upper part of the hot water storage tank 21, and hot water is discharged by opening and closing a hot water tap 25 such as a bath or kitchen. .

特許第３３１６４４４号公報Japanese Patent No. 3316444

このように、冷媒熱交換器１７を設けて冷媒回路１１を構成すると、冷媒回路１１の配管が長尺化、複雑化するとともに、冷媒熱交換器１７の収容スペースが必要とされ、機器の小型化が困難であった。また、配管作業が煩雑となって組立作業性、生産性が劣り、製作コストが高価であった。  Thus, when the refrigerant circuit 11 is configured by providing the refrigerant heat exchanger 17, the piping of the refrigerant circuit 11 becomes longer and complicated, and an accommodation space for the refrigerant heat exchanger 17 is required, so that the size of the device is reduced. It was difficult to convert. Further, the piping work is complicated, the assembly workability and productivity are inferior, and the production cost is expensive.

この発明は、こうした課題を解決することを目的とするもので、水冷媒熱交換器１３と冷媒熱交換器１７を一体に組み立て、配管の簡素化、組立作業性の向上を図るとともに、冷媒熱交換器１７の収容スペースを不要とし、機器の小型化を可能としたヒートポンプ式給湯機の熱交換器を提案することを目的とするものである。  An object of the present invention is to solve these problems. The water-refrigerant heat exchanger 13 and the refrigerant heat exchanger 17 are assembled together to simplify piping and improve assembling workability. An object of the present invention is to propose a heat exchanger for a heat pump type hot water heater that does not require a storage space for the exchanger 17 and enables downsizing of the device.

こうした目的を達成するため、この発明は、水冷媒熱交換器１３で高温高圧冷媒と熱交換して水を加熱するヒートポンプ式給湯機の熱交換器であって、圧縮機１２に供給される冷媒と、水冷媒熱交換器１３から流出する冷媒とが熱交換する冷媒熱交換器１７を冷媒回路１１に設け、水冷媒熱交換器１３を筒状に形成し、その筒内空間に柱状に形成した冷媒熱交換器１７を挿通した状態とし、水冷媒熱交換器１３と冷媒熱交換器１７を一体に組み立てたことを特徴とするものである。  In order to achieve such an object, the present invention is a heat exchanger for a heat pump water heater that heats water by exchanging heat with a high-temperature and high-pressure refrigerant in a water-refrigerant heat exchanger 13, and is a refrigerant supplied to the compressor 12. And a refrigerant heat exchanger 17 for exchanging heat with the refrigerant flowing out of the water refrigerant heat exchanger 13 is provided in the refrigerant circuit 11, the water refrigerant heat exchanger 13 is formed in a cylindrical shape, and is formed in a columnar shape in the in-cylinder space. The refrigerant refrigerant heat exchanger 17 is inserted, and the water refrigerant heat exchanger 13 and the refrigerant heat exchanger 17 are assembled together.

この発明のヒートポンプ式給湯機の熱交換器は、水冷媒熱交換器１３を筒状に形成し、その筒内空間に柱状に形成した冷媒熱交換器１７を挿通した状態とし、水冷媒熱交換器１３と冷媒熱交換器１７を一体に組み立てたので、冷媒熱交換器１７の収容スペースが不要となり、機器の小型化が可能である。また、配管が短縮化、簡素化されて配管作業性が向上され、水冷媒熱交換器１３と冷媒熱交換器１７が予め一体に組み立てられるので、組立作業性、生産性に優れ、製作コストの低廉化を図ることができる。  In the heat exchanger of the heat pump type hot water heater of the present invention, the water-refrigerant heat exchanger 13 is formed in a cylindrical shape, and the refrigerant heat exchanger 17 formed in a columnar shape is inserted into the in-cylinder space, and the water-refrigerant heat exchange is performed. Since the heat exchanger 13 and the refrigerant heat exchanger 17 are assembled together, the storage space for the refrigerant heat exchanger 17 becomes unnecessary, and the apparatus can be downsized. In addition, the piping is shortened and simplified, the piping workability is improved, and the water-refrigerant heat exchanger 13 and the refrigerant heat exchanger 17 are assembled together in advance, so that the assembly workability and productivity are excellent and the production cost is low. Cost reduction can be achieved.

また、水冷媒熱交換器１３の筒内空間の雰囲気温度は高温であり、冷媒熱交換器１７が水冷媒熱交換器１３の筒内空間に挿通した状態であるから、圧縮機１２に供給される冷媒の予熱の作用が高められ、給湯温度のさらなる高温化に寄与することができる。  Moreover, since the atmospheric temperature of the in-cylinder space of the water-refrigerant heat exchanger 13 is high and the refrigerant heat exchanger 17 is inserted into the in-cylinder space of the water-refrigerant heat exchanger 13, it is supplied to the compressor 12. This can increase the preheating effect of the refrigerant and contribute to further increase in the hot water supply temperature.

この発明の第１実施例で、一部を切り欠いて筒内を透過した状態の正面図。The front view of the state which notched a part and permeate | transmitted the inside of a cylinder in 1st Example of this invention. 同じく平面図。FIG. 冷媒熱交換器の正面図。The front view of a refrigerant | coolant heat exchanger. 同じく平面図。FIG. 第２実施例の冷媒熱交換器の正面図。The front view of the refrigerant | coolant heat exchanger of 2nd Example. 同じく平面図。FIG. ヒートポンプ式給湯機の構成図。The block diagram of a heat pump type water heater.

以下に、この発明の具体的な実施形態を図面の実施例に基づいて説明する。  Hereinafter, specific embodiments of the present invention will be described based on examples of the drawings.

図１から４に示す熱交換器はこの発明の最初の実施例で、圧縮機１２に供給される冷媒と、水冷媒熱交換器１３から流出する冷媒とが熱交換する冷媒熱交換器１７を冷媒回路１１に設けたヒートポンプ式給湯機の熱交換器ある。図に示すように、水冷媒熱交換器１３は、高温高圧冷媒が流通する細管１３１と、被加熱流体である水が流通する管体１３２とを螺旋コイル形状に成形し、この２本のコイル管を交互に配して互いに当接させて積層し、筒状に形成されている。冷媒は入口１３１ａから出口１３１ｂへ、水は入口１３２ａから出口１３２ｂへと交差して流通し、高温高圧冷媒により水が加熱される。  The heat exchanger shown in FIGS. 1 to 4 is a first embodiment of the present invention. There is a heat exchanger of a heat pump type water heater provided in the refrigerant circuit 11. As shown in the figure, the water-refrigerant heat exchanger 13 is formed by forming a thin tube 131 through which a high-temperature and high-pressure refrigerant flows and a tube body 132 through which water as a fluid to be heated flows into a spiral coil shape, and these two coils. The tubes are alternately arranged and abutted against each other to form a cylindrical shape. The refrigerant flows from the inlet 131a to the outlet 131b, and the water crosses from the inlet 132a to the outlet 132b. The water is heated by the high-temperature and high-pressure refrigerant.

冷媒熱交換器１７は、圧縮機１２に供給される低圧冷媒が流通する管体１７１と、水冷媒熱交換器１３から流出する高圧冷媒が流通する細管１７２とをサーペンタイン状の蛇行形状に成形し、互いに当接させて筒状すなわち外形形状が柱状に形成され、その外径が水冷媒熱交換器１３の内径より小さく設定されている。低圧冷媒は入口１７１ａから出口１７１ｂへ、高圧冷媒は入口１７２ａから出口１７２ｂへと交差して流通し、圧縮機１２に供給される低圧冷媒が予熱される。  The refrigerant heat exchanger 17 is formed into a serpentine serpentine shape by forming a pipe body 171 through which low-pressure refrigerant supplied to the compressor 12 flows and a narrow pipe 172 through which high-pressure refrigerant flowing out from the water refrigerant heat exchanger 13 flows. The cylindrical shape, that is, the outer shape is formed in a columnar shape by contacting each other, and the outer diameter is set smaller than the inner diameter of the water-refrigerant heat exchanger 13. The low-pressure refrigerant flows from the inlet 171a to the outlet 171b and the high-pressure refrigerant crosses from the inlet 172a to the outlet 172b, and the low-pressure refrigerant supplied to the compressor 12 is preheated.

水冷媒熱交換器１３の筒内空間に冷媒熱交換器１７が挿通され、固定金具１７５を基台１３５に固定して水冷媒熱交換器１３と冷媒熱交換器１７が組み立てられ、両熱交換器を一体とした筐体に形成されている。この熱交換器を室外ユニット１０に組み込み、各流体の出入口を接続し、冷媒回路１１に配管される。  The refrigerant heat exchanger 17 is inserted into the in-cylinder space of the water-refrigerant heat exchanger 13, the fixing bracket 175 is fixed to the base 135, the water-refrigerant heat exchanger 13 and the refrigerant heat exchanger 17 are assembled, and both heat exchanges are performed. It is formed in a housing with an integrated vessel. This heat exchanger is incorporated in the outdoor unit 10, and the inlets and outlets of the respective fluids are connected and piped to the refrigerant circuit 11.

図５，６は、冷媒熱交換器１７の他の実施例である。この冷媒熱交換器１７は、圧縮機１２に供給される低圧冷媒が流通する管体１７１と、水冷媒熱交換器１３から流出する高圧冷媒が流通する細管１７２とを螺旋コイル形状に成形し、この２本のコイル管を交互に配して互いに当接させて積層し、筒状に形成したものである。前例と同様に、水冷媒熱交換器１３の筒内空間に冷媒熱交換器１７が挿通され、固定金具１７５を基台１３５に固定して水冷媒熱交換器１３と冷媒熱交換器１７が組み立てられ、両熱交換器を一体とした筐体に形成される。  5 and 6 show another embodiment of the refrigerant heat exchanger 17. The refrigerant heat exchanger 17 is formed by forming a tubular body 171 through which low-pressure refrigerant supplied to the compressor 12 circulates and a thin tube 172 through which high-pressure refrigerant flowing out from the water refrigerant heat exchanger 13 circulates into a spiral coil shape, These two coiled tubes are alternately arranged and brought into contact with each other and stacked to form a cylindrical shape. As in the previous example, the refrigerant heat exchanger 17 is inserted into the in-cylinder space of the water refrigerant heat exchanger 13, and the fixing metal 175 is fixed to the base 135 to assemble the water refrigerant heat exchanger 13 and the refrigerant heat exchanger 17. And is formed in a housing in which both heat exchangers are integrated.

１１ 冷媒回路
１２ 圧縮機
１３ 水冷媒熱交換器
１７ 冷媒熱交換器11 Refrigerant Circuit 12 Compressor 13 Water Refrigerant Heat Exchanger 17 Refrigerant Heat Exchanger

Claims (1)

水冷媒熱交換器１３で高温高圧冷媒と熱交換して水を加熱するヒートポンプ式給湯機の熱交換器であって、
圧縮機１２に供給される冷媒と、水冷媒熱交換器１３から流出する冷媒とが熱交換する冷媒熱交換器１７を冷媒回路１１に設け、
水冷媒熱交換器１３を筒状に形成し、その筒内空間に柱状に形成した冷媒熱交換器１７を挿通した状態とし、水冷媒熱交換器１３と冷媒熱交換器１７を一体に組み立てたことを特徴とするヒートポンプ式給湯機の熱交換器。A heat exchanger of a heat pump water heater that heats water by exchanging heat with a high-temperature and high-pressure refrigerant in a water refrigerant heat exchanger 13,
A refrigerant heat exchanger 17 for exchanging heat between the refrigerant supplied to the compressor 12 and the refrigerant flowing out of the water refrigerant heat exchanger 13 is provided in the refrigerant circuit 11,
The water-refrigerant heat exchanger 13 is formed in a cylindrical shape, and a columnar-shaped refrigerant heat exchanger 17 is inserted into the cylinder space, and the water-refrigerant heat exchanger 13 and the refrigerant heat exchanger 17 are assembled together. A heat exchanger for a heat pump type hot water heater.
JP2009183849A 2009-07-15 2009-07-15 Heat exchanger for heat pump water heater Active JP5547439B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015034671A (en) * 2013-08-09 2015-02-19 株式会社アタゴ製作所 Heat exchanger for heat pump type water heater

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004044896A (en) * 2002-07-11 2004-02-12 Daikin Ind Ltd Heat exchanger for hot-water supply
JP2006336894A (en) * 2005-05-31 2006-12-14 Mitsubishi Electric Corp Heat pump water heater
JP2009236396A (en) * 2008-03-27 2009-10-15 Toshiba Carrier Corp Heat pump type hot water supply device
JP2010169317A (en) * 2009-01-23 2010-08-05 Hitachi Appliances Inc Heat pump water heater

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004044896A (en) * 2002-07-11 2004-02-12 Daikin Ind Ltd Heat exchanger for hot-water supply
JP2006336894A (en) * 2005-05-31 2006-12-14 Mitsubishi Electric Corp Heat pump water heater
JP2009236396A (en) * 2008-03-27 2009-10-15 Toshiba Carrier Corp Heat pump type hot water supply device
JP2010169317A (en) * 2009-01-23 2010-08-05 Hitachi Appliances Inc Heat pump water heater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015034671A (en) * 2013-08-09 2015-02-19 株式会社アタゴ製作所 Heat exchanger for heat pump type water heater

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