JP2006097951A - Heat pump water heater - Google Patents

Heat pump water heater Download PDF

Info

Publication number
JP2006097951A
JP2006097951A JP2004283868A JP2004283868A JP2006097951A JP 2006097951 A JP2006097951 A JP 2006097951A JP 2004283868 A JP2004283868 A JP 2004283868A JP 2004283868 A JP2004283868 A JP 2004283868A JP 2006097951 A JP2006097951 A JP 2006097951A
Authority
JP
Japan
Prior art keywords
water
heat exchanger
heat
pump
hot water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2004283868A
Other languages
Japanese (ja)
Inventor
Yoshitsugu Fujimoto
佳嗣 藤本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2004283868A priority Critical patent/JP2006097951A/en
Publication of JP2006097951A publication Critical patent/JP2006097951A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12—Hot water central heating systems using heat pumps

Landscapes

  • Control For Baths (AREA)
  • Details Of Fluid Heaters (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump water heater capable of performing boiling-up operation of high efficiency by a heat pump, and boiling up the whole water in a hot water storage tank to a high temperature even when the water of medium temperature of comparatively high temperature, is stored in the hot water storage tank. <P>SOLUTION: This heat pump water heater comprises an antifreeze liquid circulating circuit E formed by piping and connecting an antifreeze liquid circulation pump 22, a water/antifreeze liquid heat exchanger 21 and an air refrigerant heat exchanger 19, and the air refrigerant heat exchanger 19 integrally constitutes a part of the antifreeze liquid circulating circuit E. As the water of medium temperature can be allowed to pass through the water refrigerant heat exchanger 17 after being cooled by the water/antifreeze liquid heat exchanger 21, even when the hot water/water in the hot water storage tank 1 is heated to the water of medium temperature by bath reheating operation or heating operation, the water of low temperature flows to the water refrigerant heat exchanger 17 constantly in boiling-up operation, and the heat pump boiling-up operation of high efficiency can be performed at all times. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、貯湯タンク内の高温水を利用して風呂追い焚きあるいは暖房運転などを行うヒートポンプ給湯機に関するものである。   The present invention relates to a heat pump water heater that uses hot water in a hot water storage tank to perform bathing or heating operation.

従来、ヒートポンプ給湯機は、ヒータやヒートポンプ等の熱源を用いて貯湯タンク内の水を沸き上げ、高温に沸き上げた湯を貯湯タンクとは別に設けた熱交換器に供給し、浴槽水あるいは暖房水と熱交換して風呂追い焚きや暖房運転を行い、熱交換後の湯水を貯湯タンクの下部に戻すように構成している（例えば、特許文献１参照）。   Conventionally, heat pump water heaters use a heat source such as a heater or heat pump to boil water in a hot water storage tank, supply the hot water heated to a high temperature to a heat exchanger provided separately from the hot water storage tank, and bath water or heating Heat is exchanged with water, bathing or heating operation is performed, and the hot water after the heat exchange is returned to the lower part of the hot water storage tank (see, for example, Patent Document 1).

図３は、特許文献１に記載された従来のヒートポンプを熱源とした風呂追い焚き給湯装置を示すものである。図３に示すように、貯湯タンク１は、ヒートポンプ往き口２、ヒートポンプ戻り口３、熱交換器往き口４、熱交換器戻り口５を有し、前記熱交換器往き口４と熱交換器戻り口５の間で貯湯タンク１内の高温水を循環させるタンク循環回路Ａを形成している。また、この風呂追い焚き給湯装置は、ヒートポンプユニット６、沸き上げポンプ７、熱交換器でタンク１内の高温水を熱交換させる熱交１次入り口９、熱交１次出口１０、浴槽水を熱交換させる熱交２次入り口１１、熱交２次出口１２を有し、前記熱交２次入り口１１と熱交２次出口１２を経由して風呂循環回路（負荷側循環回路）Ｂを形成している。さらに、タンク循環ポンプ（負荷側循環ポンプ）１３、風呂循環ポンプ（負荷側循環ポンプ）１４、浴槽１５を備えている。   FIG. 3 shows a bath-heating hot water supply apparatus using a conventional heat pump described in Patent Document 1 as a heat source. As shown in FIG. 3, the hot water storage tank 1 has a heat pump outlet 2, a heat pump return 3, a heat exchanger outlet 4, and a heat exchanger return 5, and the heat exchanger outlet 4 and the heat exchanger. A tank circulation circuit A for circulating hot water in the hot water storage tank 1 between the return ports 5 is formed. In addition, the hot water supply apparatus for reheating the bath is provided with a heat pump primary inlet 9, a heat exchanger primary outlet 10, and a bathtub water for exchanging heat from the high-temperature water in the tank 1 with a heat pump unit 6, a boiling pump 7, and a heat exchanger. It has a heat exchange secondary inlet 11 and a heat exchange secondary outlet 12 for heat exchange, and a bath circulation circuit (load-side circulation circuit) B is formed via the heat exchange secondary inlet 11 and the heat exchange secondary outlet 12. is doing. Furthermore, a tank circulation pump (load-side circulation pump) 13, a bath circulation pump (load-side circulation pump) 14, and a bathtub 15 are provided.

上記構成において、貯湯タンク１の湯水沸き上げ時には、貯湯タンク１下部の低温水をヒートポンプ往き口２より沸き上げポンプ７でヒートポンプユニット６に送り、ヒートポンプユニット６で高温水にして貯湯タンク１上部のヒートポンプ戻り口３より供給し、貯湯タンク１の上部から徐々にタンク全体を高温水にしていた。   In the above configuration, when boiling hot water in the hot water storage tank 1, the low temperature water in the lower part of the hot water storage tank 1 is sent from the heat pump outlet 2 to the heat pump unit 6 by the boiling pump 7, and converted into high temperature water by the heat pump unit 6. It was supplied from the heat pump return port 3 and the entire tank was gradually made hot water from the upper part of the hot water storage tank 1.

そして、風呂追い焚き時には、貯湯タンク１上部の高温水を熱交換器往き口４からタンク循環ポンプ１３で熱交換器８の熱交１次入り口９に供給し、熱交換され低温になった温水を熱交１次出口１０から貯湯タンク１の熱交換器戻り口５に戻し、熱交換器８の１次側で貯湯タンク１内の高温水の循環回路を形成している。そして、浴槽１５の温水を風呂循環ポンプ１４で熱交換器８の熱交２次入り口１１に供給し、前記１次側の高温水と熱交換して温度上昇させて熱交２次出口１２から浴槽１５に戻して追い焚きを行っていた。また、貯湯タンク１下部に戻された熱交換後の中温水になったものをヒートポンプユニット６へ供給し、再び沸き上げを行っていた。
特開平９−８９３６９号公報 At the time of bathing, the hot water in the upper part of the hot water storage tank 1 is supplied from the heat exchanger outlet 4 to the heat exchange primary inlet 9 of the heat exchanger 8 by the tank circulation pump 13, and the hot water that has undergone heat exchange and has become a low temperature. Is returned from the heat exchange primary outlet 10 to the heat exchanger return port 5 of the hot water storage tank 1, and a high-temperature water circulation circuit in the hot water storage tank 1 is formed on the primary side of the heat exchanger 8. Then, the hot water in the bathtub 15 is supplied to the heat exchange secondary inlet 11 of the heat exchanger 8 by the bath circulation pump 14, and heat is exchanged with the high-temperature water on the primary side to increase the temperature from the heat exchange secondary outlet 12. I returned to the bathtub 15 and chased me. Moreover, what became the middle temperature water after the heat exchange returned to the lower part of the hot water storage tank 1 is supplied to the heat pump unit 6 and heated again.
JP-A-9-89369

しかしながら、前記従来の構成では、風呂追い焚き時に貯湯タンク１上部の高温水を熱交換器往き口４からタンク循環ポンプ１３で熱交換器８の熱交１次入り口９に供給し、熱交換され中温になった温水を熱交１次出口１０から貯湯タンク１の熱交換器戻り口５に戻している。   However, in the conventional configuration, when the bath is replenished, the hot water in the upper part of the hot water storage tank 1 is supplied from the heat exchanger outlet 4 to the heat exchange primary inlet 9 of the heat exchanger 8 by the tank circulation pump 13 to be heat exchanged. Hot water that has reached an intermediate temperature is returned from the heat exchange primary outlet 10 to the heat exchanger return port 5 of the hot water storage tank 1.

この場合、タンク循環ポンプ１３の回転数が低く、流量が少なければ風呂循環回路Ｂへの熱交換量が少なく、沸き上げに時間がかかり、また、タンク循環ポンプ１３の回転数が高く流量が多いと、風呂循環回路Ｂへの熱交換量が多く、沸き上げ時間が早くなる。しかし、沸き上げ時間を早くするために循環流量を多くすると、貯湯タンク１下部には十分熱交換されなかった中温水が戻ってくることになり、貯湯タンク１内には中温水が貯湯されることになる。   In this case, if the rotation speed of the tank circulation pump 13 is low and the flow rate is small, the amount of heat exchange to the bath circulation circuit B is small, and it takes time to boil, and the rotation speed of the tank circulation pump 13 is high and the flow rate is large. And the amount of heat exchange to the bath circulation circuit B is large, and the boiling time is shortened. However, if the circulation flow rate is increased in order to increase the boiling time, the medium-temperature water that has not been sufficiently heat-exchanged returns to the lower part of the hot water storage tank 1, and the intermediate temperature water is stored in the hot water storage tank 1. It will be.

貯湯タンク１から比較的温度の高い中温水がヒートポンプユニット６に供給されると、ヒ−トポンプ６の特性として、ヒートポンプユニット６への入水温度が高い場合、効率が悪いので高効率沸き上げ運転ができないという課題を有していた。また、ヒートポンプユニット６への入水温度がさらに高く（例えば約６０℃）なると、沸き上げ運転が停止してしまうという課題も有していた。   When medium temperature water having a relatively high temperature is supplied from the hot water storage tank 1 to the heat pump unit 6, the heat pump 6 has a characteristic that when the temperature of the water entering the heat pump unit 6 is high, the efficiency is poor, so that the high efficiency boiling operation is performed. I had a problem that I couldn't. Moreover, when the temperature of water entering the heat pump unit 6 is further increased (for example, about 60 ° C.), the boiling operation is stopped.

本発明は、前記従来の課題を解決するもので、ヒートポンプによる高効率沸き上げ運転を行うとともに、貯湯タンクに比較的温度の高い中温水が貯湯されている場合でも、貯湯タンク全量を高温に沸き上げることのできるヒートポンプ給湯機を提供することを目的とする。   The present invention solves the above-mentioned conventional problems. In addition to performing a high-efficiency boiling operation using a heat pump, the entire amount of the hot water storage tank is boiled to a high temperature even when hot water is stored in the hot water tank. It aims at providing the heat pump water heater which can be raised.

前記従来の課題を解決するために、本発明のヒートポンプ給湯機は、不凍液循環ポンプ、前記水・不凍液熱交換器、前記空気冷媒熱交換器を配管接続した不凍液循環回路を備え、前記空気冷媒熱交換器は、前記不凍液循環回路の一部を一体構成としたものである。   In order to solve the above-mentioned conventional problems, a heat pump water heater of the present invention includes an antifreeze liquid circulation circuit in which an antifreeze liquid circulation pump, the water / antifreeze liquid heat exchanger, and the air refrigerant heat exchanger are connected by piping, and the air refrigerant heat The exchanger is an integral part of the antifreeze circulation circuit.

これによって、風呂追い焚きあるいは暖房運転により、貯湯タンク内の湯水が中温水となった場合でも、一旦、水・不凍液熱交換器により中温水を低温水にした後に水冷媒熱交換器を通過させることができるので、沸き上げ運転時は水冷媒熱交換器には常に低温水が流入することになり、常時高効率なヒートポンプ沸き上げ運転が可能となる。   As a result, even if the hot water in the hot water storage tank becomes intermediate temperature water due to bathing or heating operation, the intermediate temperature water is once changed to low temperature water by the water / antifreeze liquid heat exchanger and then passed through the water refrigerant heat exchanger. Therefore, during boiling operation, low-temperature water always flows into the water-refrigerant heat exchanger, so that highly efficient heat pump boiling operation is always possible.

本発明のヒートポンプ給湯機は、ヒートポンプによる高効率沸き上げ運転を行うとともに、貯湯タンクに比較的温度の高い中温水が貯湯されている場合でも、貯湯タンク全量を高温に沸き上げることのできるヒートポンプ給湯機を提供することができる。   The heat pump water heater of the present invention performs a high-efficiency boiling operation using a heat pump, and can heat up the entire amount of hot water storage tank to a high temperature even when relatively hot hot water is stored in the hot water storage tank. Machine can be provided.

第１の発明は、圧縮機、水冷媒熱交換器、膨張弁及び空気冷媒熱交換器を配管接続した冷媒回路と、貯湯タンク、沸き上げポンプ、前記水冷媒熱交換器、及び水・不凍液熱交換器を配管接続した、沸き上げ回路と、前記貯湯タンク、負荷側循環水と熱交換する熱交換器及びタンク循環ポンプを配管接続したタンク循環回路と、前記熱交換器及び負荷側循環ポンプを配管接続した負荷側循環回路と、不凍液循環ポンプ、前記水・不凍液熱交換器、前記空気冷媒熱交換器を配管接続した不凍液循環回路を備え、前記空気冷媒熱交換器は、前記不凍液循環回路の一部を一体構成としたヒートポンプ給湯機とすることにより、風呂追い焚きあるいは暖房運転により、貯湯タンク内の湯水が中温水となった場合でも、一旦、水・不凍液熱交換器により中温水を低温水にした後に水冷媒熱交換器を通過させることができるので、沸き上げ運転時は水冷媒熱交換器には常に低温水が流入することになり、常時高効率なヒートポンプ沸き上げ運転が可能となる。   A first invention is a refrigerant circuit in which a compressor, a water refrigerant heat exchanger, an expansion valve and an air refrigerant heat exchanger are connected by piping, a hot water storage tank, a boiling pump, the water refrigerant heat exchanger, and water / antifreeze liquid heat. A heating circuit that is connected to an exchanger, a tank circulation circuit that is connected to the hot water storage tank, a heat exchanger that exchanges heat with the load-side circulating water, and a tank circulation pump, and the heat exchanger and the load-side circulation pump. A load-side circulation circuit connected by piping, an antifreeze circulation pump, the water / antifreeze heat exchanger, and an antifreeze circulation circuit connected by piping to the air refrigerant heat exchanger, and the air refrigerant heat exchanger of the antifreeze circulation circuit By using a heat pump water heater that is partially integrated, even if the hot water in the hot water storage tank becomes medium-temperature water due to bathing or heating, the water / antifreeze heat exchanger is Since the water refrigerant heat exchanger can be passed after the water is converted to low-temperature water, the low-temperature water always flows into the water-refrigerant heat exchanger during the boiling operation, and the high-efficiency heat pump boiling operation is always performed. Is possible.

第２の発明は、特に、第１の発明において、負荷側循環水と熱交換する熱交換器により、風呂追い焚きを行うことにより、高効率の風呂追い焚きが可能である。   In the second invention, in particular, in the first invention, highly efficient bath recuperation is possible by performing bath replenishment with a heat exchanger that exchanges heat with load-side circulating water.

第３の発明は、特に、第１の発明において、負荷側循環水と熱交換する熱交換器により、暖房運転を行うことにより、高効率の暖房運転が可能である。   In a third aspect of the invention, in particular, in the first aspect of the invention, a highly efficient heating operation is possible by performing a heating operation using a heat exchanger that exchanges heat with the load-side circulating water.

第４の発明は、特に、第１の発明において、負荷側循環水と熱交換する熱交換器により、風呂追い焚き及び暖房運転を行うことにより、高効率の風呂追い焚き及び暖房運転が可能である。   In a fourth aspect of the invention, in particular, in the first aspect of the invention, a highly efficient bath reheating and heating operation are possible by performing a bath reheating and heating operation by a heat exchanger that exchanges heat with the load-side circulating water. is there.

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本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. Note that the present invention is not limited to the embodiments.

（実施の形態）
図１は、本発明の実施の形態におけるヒートポンプ給湯機を示すものである。 (Embodiment)
FIG. 1 shows a heat pump water heater in an embodiment of the present invention.

図において、貯湯タンク１〜浴槽１５までの基本構成は、図２と同じである。相違点は、圧縮機１６、水冷媒熱交換器１７、膨張弁１８、及び空気冷媒熱交換器１９で冷媒回路Ｃが形成されていること、空気冷媒熱交換器１９に対応して送風ファン２０が設置されていること、少なくとも１つの貯湯タンク１、ヒートポンプ往き口２、沸き上げポンプ７、水・不凍液熱交換器２１、前記水冷媒熱交換器１７、及びヒートポンプ戻り口３で沸き上げ回路Ｄが形成されていること、不凍液循環ポンプ２２、前記水・不凍液熱交換器２１、前記空気冷媒熱交換器１９を配管接続して不凍液循環回路Ｅが形成されていることである。また、タンク循環回路Ａは、少なくとも１つの負荷側循環水を循環させ、風呂循環回路Ｂは少なくとも１つの負荷側循環ポンプを配管接続していることである。   In the figure, the basic configuration from the hot water storage tank 1 to the bathtub 15 is the same as FIG. The difference is that the refrigerant circuit C is formed by the compressor 16, the water refrigerant heat exchanger 17, the expansion valve 18, and the air refrigerant heat exchanger 19, and the blower fan 20 corresponding to the air refrigerant heat exchanger 19. And at least one hot water storage tank 1, heat pump outlet 2, boiling pump 7, water / antifreeze liquid heat exchanger 21, water refrigerant heat exchanger 17, and heat pump return port 3 for boiling circuit D The antifreeze circulating circuit E is formed by connecting the antifreeze circulating pump 22, the water / antifreeze heat exchanger 21 and the air refrigerant heat exchanger 19 by piping. Further, the tank circulation circuit A circulates at least one load-side circulating water, and the bath circulation circuit B has at least one load-side circulation pump connected by piping.

以上のように構成されたヒートポンプ給湯機について、以下その動作、作用を説明する。   About the heat pump water heater comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

貯湯タンク１内が低温水である場合、沸き上げ時には、貯湯タンク１下部の低温水をヒートポンプ往き口２より沸き上げポンプ７で水・不凍液熱交換器２１を通過させ、水冷媒熱交換器１７に送り、水冷媒熱交換器１７で高温水にして貯湯タンク１上部のヒートポンプ戻り口３より供給し、貯湯タンク１の上部から徐々にタンク全体を高温水にする。この場合、水冷媒熱交換器１７に流入する水は低温水のため、不凍液循環ポンプ２２を運転する必要はない。   When the inside of the hot water storage tank 1 is low-temperature water, at the time of boiling, the low-temperature water at the bottom of the hot water storage tank 1 is passed through the water / antifreeze liquid heat exchanger 21 by the boiling pump 7 from the heat pump outlet 2, and the water-refrigerant heat exchanger 17 The water refrigerant heat exchanger 17 converts the water into high temperature water and supplies it from the heat pump return port 3 at the upper part of the hot water storage tank 1. In this case, since the water flowing into the water-refrigerant heat exchanger 17 is low-temperature water, it is not necessary to operate the antifreeze circulating pump 22.

そして、風呂追い焚き時には、貯湯タンク１上部の高温水を熱交換器往き口４からタンク循環ポンプ１３で追い焚き熱交換器８の熱交１次入り口９に供給し、熱交換され中温になった温水を熱交１次出口１０から貯湯タンク１の熱交換器戻り口５に戻す。そして、浴槽１５の温水を風呂循環ポンプ１４で追い焚き熱交換器８の熱交２次入り口１１に供給し、前記１次側の高温水と熱交換して温度上昇させて熱交２次出口１２から浴槽１５に戻して風呂追い焚きを行う。   At the time of reheating the bath, the hot water in the upper part of the hot water storage tank 1 is supplied from the heat exchanger outlet 4 to the heat exchange primary inlet 9 of the reheating heat exchanger 8 by the tank circulation pump 13 and is heat-exchanged to reach an intermediate temperature. The warm water is returned from the heat exchange primary outlet 10 to the heat exchanger return port 5 of the hot water storage tank 1. And the hot water of the bathtub 15 is replenished by the bath circulation pump 14 and supplied to the heat exchange secondary inlet 11 of the heat exchanger 8, and heat exchange with the high-temperature water on the primary side is performed to increase the temperature, and the heat exchange secondary outlet. Return the bath from 12 to the bathtub 15 and perform bathing.

風呂追い焚き運転時、タンク循環ポンプ１３による流量が少なければ風呂循環回路Ｂへの熱交換量が少なく、沸き上げに時間がかかるため、タンク循環ポンプ１３による流量を多くし風呂循環回路Ｂへの熱交換量を多くすることで、沸き上げ時間を早くする。しかし、沸き上げ時間を早くするために循環流量を多くすると、貯湯タンク１下部には十分熱交換されなかった中温水が戻ってくることになり、貯湯タンク１内には中温水が貯湯されることになる。   At the time of bathing operation, if the flow rate by the tank circulation pump 13 is small, the amount of heat exchange to the bath circulation circuit B is small, and it takes time to boil, so the flow rate by the tank circulation pump 13 is increased and the flow to the bath circulation circuit B is increased. By increasing the amount of heat exchange, the boiling time is shortened. However, if the circulation flow rate is increased in order to increase the boiling time, the medium-temperature water that has not been sufficiently heat-exchanged returns to the lower part of the hot water storage tank 1, and the intermediate temperature water is stored in the hot water storage tank 1. It will be.

貯湯タンク１内に中温水が貯湯されている場合、沸き上げ時には、不凍液循環ポンプ２２を運転し、貯湯タンク１下部の中温水をヒートポンプ往き口２より沸き上げポンプ７で水・不凍液熱交換器２１を通過させ放熱により低温水とした後、水冷媒熱交換器１７に送り、水冷媒熱交換器１７で高温水にして貯湯タンク１上部のヒートポンプ戻り口３より供給し、貯湯タンク１の上部から徐々にタンク全体を高温水にする。この場合、中温水を一旦水・不凍液熱交換器２１を通過させることにより、中温水から不凍液への放熱が発生するが、水・不凍液熱交換器２１で中温水から不凍液へ放熱された熱量は、空気冷媒熱交換器１９にて、冷媒回路Ｃ側に回収されヒートポンプ効率を向上させることになるため、放熱ロスとはならない。   When hot water is stored in the hot water storage tank 1, the antifreeze circulation pump 22 is operated at the time of boiling, and the hot water in the lower part of the hot water storage tank 1 is heated by the boiling pump 7 from the heat pump outlet 2 and the water / antifreeze heat exchanger. After passing through 21 and making low-temperature water by heat radiation, it is sent to the water-refrigerant heat exchanger 17, converted to high-temperature water by the water-refrigerant heat exchanger 17, and supplied from the heat pump return port 3 at the upper part of the hot water storage tank 1. Gradually turn the entire tank into hot water. In this case, once the intermediate temperature water passes through the water / antifreeze liquid heat exchanger 21, heat is released from the intermediate temperature water to the antifreeze liquid, but the amount of heat released from the intermediate temperature water to the antifreeze liquid in the water / antifreeze liquid heat exchanger 21 is The air refrigerant heat exchanger 19 collects the refrigerant on the refrigerant circuit C side and improves the heat pump efficiency, so there is no heat dissipation loss.

また、外気温が低い場合、空気冷媒熱交換器１９では、その中を流れる冷媒温度は０℃以下となることがあり、空気冷媒熱交換器１９内の不凍液循環回路Ｅも０℃以下になることが考えられるが、不凍液が循環しているので、流体が凍結することはない。   Further, when the outside air temperature is low, the temperature of the refrigerant flowing through the air refrigerant heat exchanger 19 may be 0 ° C. or less, and the antifreeze circulation circuit E in the air refrigerant heat exchanger 19 is also 0 ° C. or less. However, since the antifreeze is circulating, the fluid will not freeze.

図２は、空気冷媒熱交換器１９の構成を示すものであり、フィン２３、冷媒が通過する銅パイプ２４、不凍液が通過する銅パイプ２５を有する。これらフィン２３、銅パイプ２４および２５は一体で構成されており、不凍液が通過する銅パイプ２５からの熱はフィン２３により、冷媒が通過する銅パイプ２４に伝えられ、水・不凍液熱交換器２１で貯湯タンク１よりの中温水から不凍液に奪われた熱量は、空気冷媒熱交換器１９で冷媒回路Ｃに回収されることになる。   FIG. 2 shows the configuration of the air-refrigerant heat exchanger 19, which includes fins 23, a copper pipe 24 through which the refrigerant passes, and a copper pipe 25 through which the antifreeze liquid passes. The fins 23 and the copper pipes 24 and 25 are integrally formed, and heat from the copper pipe 25 through which the antifreeze liquid passes is transmitted to the copper pipe 24 through which the refrigerant passes through the fins 23, and the water / antifreeze liquid heat exchanger 21. Thus, the amount of heat deprived by the antifreeze from the medium temperature water from the hot water storage tank 1 is recovered by the refrigerant circuit C by the air refrigerant heat exchanger 19.

以上のように、本実施の形態においては、不凍液循環ポンプ２２、水・不凍液熱交換器２１、空気冷媒熱交換器１９を配管接続した不凍液循環回路Ｅを備え、空気冷媒熱交換器１９は、不凍液循環回路Ｅの一部を一体構成とすることにより、風呂追い焚きあるいは暖房運転により、貯湯タンク１内の湯水が中温水となった場合でも、一旦、水・不凍液熱交換器２１により中温水を低温水にした後に水冷媒熱交換器１７を通過させることができるので、沸き上げ運転時は水冷媒熱交換器１７には常に低温水が流入することになり、常時高効率なヒートポンプ沸き上げ運転が可能となる。   As described above, in the present embodiment, the antifreezing liquid circulation pump 22, the water / antifreezing liquid heat exchanger 21, and the air refrigerant heat exchanger 19 are connected by piping, and the air refrigerant heat exchanger 19 includes: By integrating a part of the antifreeze liquid circulation circuit E, even when the hot water in the hot water storage tank 1 becomes medium temperature water due to bathing or heating operation, the water / antifreeze liquid heat exchanger 21 temporarily sets the medium temperature water. Since the water-refrigerant heat exchanger 17 can be passed after the water is made into low-temperature water, low-temperature water always flows into the water-refrigerant heat exchanger 17 at the time of boiling operation, and the high-efficiency heat pump boiling is always performed. Driving is possible.

なお、負荷側循環水と熱交換する熱交換器８により、風呂追い焚きあるいは暖房運転、または、風呂追い焚き及び暖房運転を行うことにより、高効率の運転が可能である。   A highly efficient operation is possible by performing a bath reheating or heating operation or a bath reheating and heating operation by the heat exchanger 8 that exchanges heat with the load-side circulating water.

以上のように、本発明にかかるヒートポンプ給湯機は、ヒートポンプによる高効率沸き上げ運転を行うとともに、貯湯タンクに比較的温度の高い中温水が貯湯されている場合でも、貯湯タンク全量を高温に沸き上げることができるので、風呂追い焚き機能付のヒートポンプ給湯機だけでなく、暖房機能付のヒートポンプ給湯機あるいは風呂追い焚きと暖房の両機能を持つヒートポンプ給湯機等の用途にも適用できる。   As described above, the heat pump water heater according to the present invention performs high-efficiency boiling operation using a heat pump, and boils the entire amount of the hot water storage tank to a high temperature even when hot water with a relatively high temperature is stored in the hot water storage tank. Therefore, it can be applied not only to a heat pump water heater with a bath reheating function, but also to a heat pump water heater with a heating function or a heat pump water heater with both a bath reheating function and a heating function.

本発明の実施の形態におけるヒートポンプ給湯機の構成図The block diagram of the heat pump water heater in embodiment of this invention 同ヒートポンプ給湯機における空気冷媒熱交換器の構成図Configuration diagram of air refrigerant heat exchanger in the same heat pump water heater 従来のヒートポンプ給湯機の構成図Configuration diagram of conventional heat pump water heater

符号の説明Explanation of symbols

１ 貯湯タンク
７ 沸き上げポンプ
８ 熱交換器
１３ タンク循環ポンプ
１４ 風呂循環ポンプ（負荷側循環ポンプ）
１６ 圧縮機
１７ 水冷媒熱交換器
１８ 膨張弁
１９ 空気冷媒熱交換器
２１ 水・不凍液熱交換器
２２ 不凍液循環ポンプ
Ａ タンク循環回路
Ｂ 風呂循環回路（負荷側循環回路）
Ｃ 冷媒回路
Ｄ 沸き上げ回路
Ｅ 不凍液循環回路
DESCRIPTION OF SYMBOLS 1 Hot water storage tank 7 Boiling pump 8 Heat exchanger 13 Tank circulation pump 14 Bath circulation pump (load side circulation pump)
16 Compressor 17 Water Refrigerant Heat Exchanger 18 Expansion Valve 19 Air Refrigerant Heat Exchanger 21 Water / Antifreeze Heat Exchanger 22 Antifreeze Circulation Pump A Tank Circulation Circuit B Bath Circulation Circuit (Load Side Circulation Circuit)
C Refrigerant circuit D Boiling circuit E Antifreeze circulation circuit

Claims (4)

圧縮機、水冷媒熱交換器、膨張弁及び空気冷媒熱交換器を配管接続した冷媒回路と、貯湯タンク、沸き上げポンプ、前記水冷媒熱交換器、及び水・不凍液熱交換器を配管接続した、沸き上げ回路と、前記貯湯タンク、負荷側循環水と熱交換する熱交換器及びタンク循環ポンプを配管接続したタンク循環回路と、前記熱交換器及び負荷側循環ポンプを配管接続した負荷側循環回路と、不凍液循環ポンプ、前記水・不凍液熱交換器、前記空気冷媒熱交換器を配管接続した不凍液循環回路を備え、前記空気冷媒熱交換器は、前記不凍液循環回路の一部を一体構成としたヒートポンプ給湯機。 Compressor, water refrigerant heat exchanger, expansion valve and air refrigerant heat exchanger connected with piping, hot water storage tank, boiling pump, water refrigerant heat exchanger, water / antifreeze liquid heat exchanger connected with piping A boiling circuit, a tank circulation circuit in which the heat storage tank, a heat exchanger for exchanging heat with the load-side circulating water, and a tank circulation pump are connected by piping, and a load-side circulation in which the heat exchanger and the load-side circulation pump are connected by piping. A circuit, an antifreeze circulation pump, the water / antifreeze heat exchanger, and an antifreeze circulation circuit in which the air refrigerant heat exchanger is connected by piping, and the air refrigerant heat exchanger is configured integrally with a part of the antifreeze circulation circuit Heat pump water heater. 負荷側循環水と熱交換する熱交換器により、風呂追い焚きを行う請求項１に記載のヒートポンプ給湯機。 The heat pump water heater according to claim 1, wherein the bath is reheated by a heat exchanger that exchanges heat with the load-side circulating water. 負荷側循環水と熱交換する熱交換器により、暖房運転を行う請求項１に記載のヒートポンプ給湯機。 The heat pump water heater of Claim 1 which performs heating operation with the heat exchanger which heat-exchanges with load side circulating water. 負荷側循環水と熱交換する熱交換器により、風呂追い焚き及び暖房運転を行う請求項１に記載のヒートポンプ給湯機。 The heat pump water heater according to claim 1, wherein the bath is reheated and the heating operation is performed by a heat exchanger that exchanges heat with the load-side circulating water.
JP2004283868A 2004-09-29 2004-09-29 Heat pump water heater Pending JP2006097951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004283868A JP2006097951A (en) 2004-09-29 2004-09-29 Heat pump water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004283868A JP2006097951A (en) 2004-09-29 2004-09-29 Heat pump water heater

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2005076845A Division JP2006098040A (en) 2005-03-17 2005-03-17 Heat pump water heater

Publications (1)

Publication Number Publication Date
JP2006097951A true JP2006097951A (en) 2006-04-13

Family

ID=36237947

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004283868A Pending JP2006097951A (en) 2004-09-29 2004-09-29 Heat pump water heater

Country Status (1)

Country Link
JP (1) JP2006097951A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008309410A (en) * 2007-06-15 2008-12-25 Akira Tanaka Heat pump type hot water supply device
JP2012220034A (en) * 2011-04-04 2012-11-12 Mitsubishi Electric Corp Storage type water heater
CN102778037A (en) * 2011-05-12 2012-11-14 周宇 Heat exchange water tank structure of heat pump water heater
KR101959275B1 (en) * 2018-09-14 2019-03-19 에너지관리기술(주) A cooling and a heating integrated piping system using the water source type heat pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008309410A (en) * 2007-06-15 2008-12-25 Akira Tanaka Heat pump type hot water supply device
JP2012220034A (en) * 2011-04-04 2012-11-12 Mitsubishi Electric Corp Storage type water heater
CN102778037A (en) * 2011-05-12 2012-11-14 周宇 Heat exchange water tank structure of heat pump water heater
KR101959275B1 (en) * 2018-09-14 2019-03-19 에너지관리기술(주) A cooling and a heating integrated piping system using the water source type heat pump

Similar Documents

Publication Publication Date Title
JP5215692B2 (en) Heat pump water heater
JP4937052B2 (en) Hot water storage water heater
JP6102718B2 (en) Hot water storage water heater
JP2009068761A (en) Hot water storage type water heater
JP2006097951A (en) Heat pump water heater
JP2006097950A (en) Heat pump water heater
JP4937561B2 (en) Hot spring water supply system for pure natural hot spring bath
JP2008309389A (en) Hot water storage tank and heat pump water heater using the same
JP4244533B2 (en) Multi-function water heater
JP2006098040A (en) Heat pump water heater
JP2006343012A (en) Heat pump water heater
JP2006300469A (en) Heat pump water heater
JP5982636B2 (en) Heat pump water heater
JP4306635B2 (en) Heat pump water heater
JP2005140393A (en) Hot water storage type water heater
JP2005003210A (en) Heat pump water heater
JP2010032112A (en) Hot water supply device
JP2006300467A (en) Heat pump water heater
JP4764280B2 (en) Hot water storage water heater
JP2010121843A (en) Heat pump water heater
JP5218158B2 (en) Heat pump water heater
JP4720399B2 (en) Heat pump water heater
JP3972839B2 (en) Hot water use system
JP2006105529A (en) Hot water storage type water heater
JP2009103362A (en) Storage type water heater

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070806

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20070912

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080722

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080819

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20081216