JP4359624B2 - Heat pump system - Google Patents

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JP4359624B2
JP4359624B2 JP2007042607A JP2007042607A JP4359624B2 JP 4359624 B2 JP4359624 B2 JP 4359624B2 JP 2007042607 A JP2007042607 A JP 2007042607A JP 2007042607 A JP2007042607 A JP 2007042607A JP 4359624 B2 JP4359624 B2 JP 4359624B2
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heat exchanger
brine
heat
hot water
heating
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JP2007225274A (en
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周 煥 陳
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陳 ▲クム▼ 洙
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/124—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and being formed of pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • F25B2313/0214—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit the auxiliary heat exchanger being used parallel to the indoor unit during heating operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Description

本発明はヒートポンプシステムに係り、より詳しくは室外熱交換器の熱源として空気を用いるヒートポンプ式冷・暖房システムに関するものである。   The present invention relates to a heat pump system, and more particularly to a heat pump cooling / heating system using air as a heat source of an outdoor heat exchanger.

周知のように、ヒートポンプシステムは、圧縮機、４方バルブ、室内熱交換器、膨張バルブ、室外熱交換器、及び前記４方バルブを導管で順に連結し、前記４方バルブと圧縮機を吸入導管で連結したもので、加熱運転の時は、４方バルブを、圧縮機で圧縮された高温・高圧の冷媒蒸気が室内熱交換器に流れるように、操作して、高温・高圧の冷媒蒸気を凝縮器として作用する室内熱交換器で凝縮し、その凝縮熱を流体と熱交換させることにより、温水を生成するかあるいは室内空気を加熱して暖房または乾燥の機能をし、前記室内熱交換器で凝縮された高温・高圧の冷媒液を膨張バルブで膨張させた後、蒸発器として作用する室外熱交換器で空気（外気）を熱源として蒸発させて低温・低圧の冷媒蒸気にした後、圧縮機で吸入して前記サイクルを繰り返すものである。   As is well known, in a heat pump system, a compressor, a four-way valve, an indoor heat exchanger, an expansion valve, an outdoor heat exchanger, and the four-way valve are sequentially connected by a conduit, and the four-way valve and the compressor are sucked. In the heating operation, the four-way valve is operated so that the high-temperature / high-pressure refrigerant vapor compressed by the compressor flows to the indoor heat exchanger, and the high-temperature / high-pressure refrigerant vapor is operated. Is heated by an indoor heat exchanger that acts as a condenser, and the condensed heat is exchanged with a fluid to generate hot water or to heat indoor air to perform heating or drying, and the indoor heat exchange After the high-temperature and high-pressure refrigerant liquid condensed in the chamber is expanded by the expansion valve, the outdoor heat exchanger acting as an evaporator evaporates air (outside air) as a heat source to form low-temperature and low-pressure refrigerant vapor, Cycle through the compressor It is intended to repeat.

そして、冷却運転の時は、４方バルブを、圧縮機で圧縮された高温・高圧の冷媒蒸気が室外熱交換器に流れるように、操作して、高温・高圧の冷媒蒸気を凝縮器として作用する室外熱交換器で空気を熱源として凝縮させ、前記室外熱交換器で凝縮された高温・高圧の冷媒液を膨張バルブで膨張させた後、蒸発器として作用する室内熱交換器で冷媒液を蒸発させて、流体から蒸発熱を吸収することにより、冷水を生成するかあるいは室内空気を冷却して冷房などを行い、前記室内熱交換器で蒸発された低温・低圧の冷媒蒸気は圧縮機で吸入して前記サイクルを繰り返すものである。   During the cooling operation, the four-way valve is operated so that the high-temperature / high-pressure refrigerant vapor compressed by the compressor flows to the outdoor heat exchanger, and the high-temperature / high-pressure refrigerant vapor acts as a condenser. The outdoor heat exchanger condenses air as a heat source, expands the high-temperature and high-pressure refrigerant liquid condensed in the outdoor heat exchanger with an expansion valve, and then supplies the refrigerant liquid in the indoor heat exchanger acting as an evaporator. By evaporating and absorbing the heat of evaporation from the fluid, cold water is generated or the indoor air is cooled to cool the room, etc., and the low-temperature and low-pressure refrigerant vapor evaporated in the indoor heat exchanger is sent by a compressor. The cycle is repeated by inhalation.

前記ヒートポンプシステムは、加熱運転の際に、室外熱交換器で外気を熱源として冷媒液を蒸発させる時、その外気温度が露点以下に下降すれば、室外熱交換器の表面で霜が結ぶから冷媒液の蒸発が良くなくて加熱能力が著しく落ちるので、前記ヒートポンプシステムの加熱能力の低下を解決することがヒートポンプシステムの重要な研究開発課題となっている。   In the heat pump system, when the refrigerant liquid is evaporated using the outdoor air as a heat source in the outdoor heat exchanger during the heating operation, if the outdoor air temperature falls below the dew point, frost forms on the surface of the outdoor heat exchanger. Since the evaporation of the liquid is not good and the heating capacity is remarkably reduced, solving the decrease in the heating capacity of the heat pump system is an important research and development subject of the heat pump system.

そして、冷却運転の際に、外気温が高い時は、室外熱交換器で凝縮される冷媒蒸気と外気との温度差が小さくなるにつれて、冷媒蒸気の凝縮が不完全になることによって冷却負荷が減少する場合などは、室内熱交換器で冷媒液が完全に蒸発できないから、湿冷媒蒸気状態で圧縮機に吸入されることにより、液バック（ｌｉｑｕｉｄ ｂａｃｋ）が発生して圧縮機のバルブを損傷させる原因になり、液圧縮による液撃（ｌｉｑｕｉｄ ｈａｍｍｅｒ）が発生して圧縮機を損傷させる場合があるだけなく、成績係数が低下する現象が発生している。   During the cooling operation, when the outside air temperature is high, as the temperature difference between the refrigerant vapor condensed in the outdoor heat exchanger and the outside air becomes smaller, the refrigerant vapor becomes incompletely condensed, thereby reducing the cooling load. In the case of decrease, the refrigerant liquid cannot evaporate completely in the indoor heat exchanger, so the liquid back (liquid back) occurs when the refrigerant is sucked into the compressor in a wet refrigerant vapor state, and the compressor valve is damaged. As a result, a liquid hammer due to liquid compression may occur and the compressor may be damaged, and a phenomenon that the coefficient of performance decreases is occurring.

このような実情に鑑みてなされたヒートポンプ式冷・暖房装置とヒートポンプシステムが特許文献１及び特許文献２にそれぞれ開示されている。   A heat pump type cooling / heating device and a heat pump system made in view of such circumstances are disclosed in Patent Document 1 and Patent Document 2, respectively.

前記ヒートポンプ式冷・暖房装置は、圧縮機、４方バルブ、室内熱交換器、減圧機構、室外熱交換器及び前記４方バルブを導管で順に連結し、前記４方バルブと圧縮機を吸入導管で連結した冷媒回路において、前記圧縮機と４方バルブとの間の導管に設置した第２加熱回路と、前記第２加熱回路に連結され、前記室外熱交換器の少なくとも１側面に設置した補助熱交換器とを備え、外気温度が露点温度以下に下降すれば、圧縮機で圧縮された高温・高圧の冷媒ガスの凝縮熱によって第２加熱回路の熱媒体を加熱し、前記熱媒体を室外熱交換器の側面に設置した補助熱交換器に循環させることで、室外熱交換器に吸入される
外気を加熱し、暖房運転の時は、対流暖房と輻射暖房を併用して快適な暖房を行うようにしたものである。 The heat pump type cooling / heating device includes a compressor, a four-way valve, an indoor heat exchanger, a decompression mechanism, an outdoor heat exchanger, and the four-way valve connected in order by a conduit, and the four-way valve and the compressor are connected to a suction conduit. And a second heating circuit installed in a conduit between the compressor and the four-way valve, and an auxiliary unit connected to the second heating circuit and installed on at least one side of the outdoor heat exchanger. When the outside air temperature falls below the dew point temperature, the heat medium of the second heating circuit is heated by the condensation heat of the high-temperature and high-pressure refrigerant gas compressed by the compressor, and the heat medium is By circulating to the auxiliary heat exchanger installed on the side of the heat exchanger, the outside air sucked into the outdoor heat exchanger is heated, and during heating operation, convection heating and radiant heating are used together for comfortable heating. It is what I do.

そして、前記ヒートポンプシステムは、圧縮機、４方バルブ、室内熱交換器、冷却用膨張バルブ、加熱用膨張バルブ、室外熱交換器、及び前記４方バルブを導管で順に連結し、前記４方バルブと圧縮機を吸入導管で連結した基本冷凍回路と；前記導管の圧縮機と４方バルブとの間に連結した温水加熱回路と；前記導管の冷却用膨張バルブと加熱用膨張バルブとの間に設置して熱媒体を充填し、潜熱蓄熱材と前記温水加熱回路に連結した加熱熱交換器及び前記導管の冷却用膨張バルブと加熱用膨張バルブとの間に設置した再凝縮熱交換器とを内蔵した蓄熱槽と；前記蓄熱槽に供給管及び循環ポンプの取り付けられた帰還管で連結され、前記室外熱交換器の吸入側に設置した熱媒体循環用熱交換器と；から構成し、蓄熱槽に充填した熱媒体を再凝縮熱交換器と加熱熱交換器によって設定温度に維持し、前記設定温度を維持した熱媒体を、室外熱交換器の吸入側に設置した熱媒体循環用熱交換器に循環して、外気温度が露点以下の加熱運転の時は外気を予熱し、外気温度が高い冷却運転の時は外気を冷却するようにしたものである。
大韓民国特許登録第３６７１７６号明細書 大韓民国特許登録第４８６０９５号明細書 In the heat pump system, a compressor, a four-way valve, an indoor heat exchanger, a cooling expansion valve, a heating expansion valve, an outdoor heat exchanger, and the four-way valve are sequentially connected by a conduit, and the four-way valve And a basic refrigeration circuit in which a compressor is connected by a suction conduit; a hot water heating circuit connected between the compressor in the conduit and a four-way valve; and between a cooling expansion valve and a heating expansion valve in the conduit A heating heat exchanger connected to the latent heat storage material and the hot water heating circuit, and a recondensing heat exchanger installed between the cooling expansion valve and the heating expansion valve of the conduit; A built-in heat storage tank; and a heat exchanger for circulating a heat medium connected to the heat storage tank by a return pipe to which a supply pipe and a circulation pump are attached, and installed on the suction side of the outdoor heat exchanger. Reconsolidate the heat medium filled in the tank. The set temperature is maintained by a heat exchanger and a heating heat exchanger, and the heat medium that maintains the set temperature is circulated to the heat exchanger for heat medium circulation installed on the suction side of the outdoor heat exchanger, so that the outside air temperature is The outside air is preheated during the heating operation below the dew point, and the outside air is cooled during the cooling operation where the outside air temperature is high.
Korean Patent Registration No. 367176 Korean Patent Registration No. 486095 Specification

しかし、前記ヒートポンプ式冷・暖房装置及びヒートポンプシステムは、補助熱交換器または熱交換器を室外熱交換器の吸入側に配置し、吸入ファンによって、補助熱交換器または熱交換器で予熱または冷却された外気を室外熱交換器側に吸入するものであるから、室外熱交換器のフィン（ｆｉｎ）間に生成した霜の除霜が効率的でないのみならず、除霜時間が長くかかり、さらに冷却された空気がフィンを通過する時に再加熱されるので、冷媒蒸気の凝縮がよくないものである。   However, the heat pump cooling / heating device and the heat pump system are arranged such that an auxiliary heat exchanger or a heat exchanger is arranged on the suction side of the outdoor heat exchanger, and the auxiliary heat exchanger or the heat exchanger is used for preheating or cooling by an intake fan. Since the outside air is sucked into the outdoor heat exchanger, the defrosting of the frost generated between the fins of the outdoor heat exchanger is not only efficient, but it takes a long time to defrost, Since the cooled air is reheated as it passes through the fins, the refrigerant vapor is not well condensed.

そして、前記ヒートポンプ式冷・暖房装置は蓄熱槽に加熱貯蔵された熱媒体と外気をヒートパイプを介して間接加熱するものであるから、外気加熱効率が低下することになるものである。   And since the said heat pump type | formula cooling and heating apparatus heats the heat medium and external air which were heat-stored in the thermal storage tank via a heat pipe, external air heating efficiency will fall.

また、前記ヒートポンプシステムは、蓄熱槽を冷却用膨張バルブと加熱用膨張バルブとの間に設置し、前記蓄熱槽に再凝縮熱交換器を内蔵し、加熱運転の時、室内熱交換器（凝縮器）で凝縮された冷媒液を再凝縮熱交換器で過冷却させることで成績係数を向上させる利点はあるが、蓄熱槽に再凝縮熱交換器が内蔵されているから、酷寒の時など、蓄熱槽に充填した熱媒体が凍結する時、再凝縮熱交換器が破損すれば、冷媒と熱媒体が混合して周囲を不潔にして環境汚染を引き起こし、修理費がたくさん必要となっている。   In the heat pump system, a heat storage tank is installed between a cooling expansion valve and a heating expansion valve, and a recondensing heat exchanger is built in the heat storage tank. There is an advantage to improve the coefficient of performance by supercooling the refrigerant liquid condensed in the recondensing heat exchanger, but since the recondensing heat exchanger is built in the heat storage tank, When the heat transfer medium filled in the heat storage tank freezes, if the recondensing heat exchanger breaks, the refrigerant and the heat transfer medium mix to make the surroundings unclean and cause environmental pollution, requiring a lot of repair costs.

本発明は、前記問題点を解決して、加熱運転の際に、外気温度が低い時、室外熱交換器の除霜を迅速で効率よく行い、冷却運転の際に、外気温度が高い時にも室外熱交換器で冷媒蒸気の凝縮を効率よく行うようにしたヒートポンプシステムを提供することをその目的とする。   The present invention solves the above-mentioned problems, and performs defrosting of the outdoor heat exchanger quickly and efficiently when the outside air temperature is low during the heating operation, and also when the outside air temperature is high during the cooling operation. It is an object of the present invention to provide a heat pump system that efficiently condenses refrigerant vapor in an outdoor heat exchanger.

前記目的を達成するために、本発明は、圧縮機、４方バルブ、室内熱交換器、冷却用膨張バルブ、加熱用膨張バルブ、室外熱交換器及び前記４方バルブを導管で順に連結し、前記４方バルブと圧縮機を吸入導管で連結した基本冷凍回路と；前記導管の圧縮機と４方バルブとの間に連結した温水加熱回路と；前記温水加熱回路にブライン加熱用熱交換器を並列に連結し、前記吸入導管にブライン冷却用熱交換器をバイパスされるように連結して前記ブライン加熱用熱交換器及びブライン冷却用熱交換器に伝熱槽を形成し、前記室外熱交
換器に温度調節用熱交換器を設置し、前記伝熱槽に循環ポンプの取り付けられた供給管と帰還管を介して連結した吸気温度調節手段と；を備え、前記室外熱交換器及び温度調節用熱交換器は、ケーシングに冷媒用伝熱管とブライン用伝熱管を交互に垂直に配置し、前記冷媒用伝熱管及びブライン用伝熱管に複数のフィンを垂直に設置してなる。 In order to achieve the above object, the present invention connects a compressor, a four-way valve, an indoor heat exchanger, a cooling expansion valve, a heating expansion valve, an outdoor heat exchanger and the four-way valve in order by a conduit, A basic refrigeration circuit in which the four-way valve and a compressor are connected by a suction conduit; a hot water heating circuit connected between the compressor in the conduit and the four-way valve; a brine heating heat exchanger in the hot water heating circuit; Connected in parallel and connected to the suction conduit so that a brine cooling heat exchanger is bypassed to form a heat transfer tank in the brine heating heat exchanger and the brine cooling heat exchanger, the outdoor heat exchange A heat exchanger for adjusting the temperature in the chamber, and an intake air temperature adjusting means connected to the heat transfer tank through a supply pipe and a return pipe to which a circulation pump is attached, and the outdoor heat exchanger and the temperature control Heat exchanger, refrigerant in the casing A heat transfer tube and brine heat transfer pipe is disposed vertically alternately formed by vertically installed a plurality of fins in the refrigerant heat transfer pipe and brine heat transfer pipe.

本発明の請求項１の発明は、基本冷凍回路の室外熱交換器の冷媒用伝熱管間にブライン用伝熱管を配置し、前記両伝熱管に複数のフィンを垂直に設置し、前記ブライン用伝熱管に加熱または冷却用ブラインを循環させてフィン及び冷媒用伝熱管を加熱または冷却することにより、外気温の低い加熱運転の時、室外熱交換器で冷媒液の蒸発を効率よくし、外気温の高い冷却運転の時、冷媒蒸気の凝縮を効率よく行うことで成績係数を向上させ、外気温が低いか高い時にも成績係数を向上させることにより、季節にかかわらず効率を良く維持することができ、特に加熱運転の時は、重力によって凝縮水を分離下降させることで除霜を迅速になすことができるものである。   According to the first aspect of the present invention, a brine heat transfer tube is disposed between the refrigerant heat transfer tubes of the outdoor heat exchanger of the basic refrigeration circuit, and a plurality of fins are vertically installed on both the heat transfer tubes. By circulating a heating or cooling brine through the heat transfer tubes to heat or cool the fins and the refrigerant heat transfer tubes, the outdoor heat exchanger efficiently evaporates the refrigerant liquid during the heating operation at a low outdoor temperature. Maintains efficiency regardless of the season by improving the coefficient of performance by efficiently condensing refrigerant vapor during cooling operation at high temperatures and by improving the coefficient of performance even when the outside temperature is low or high In particular, during the heating operation, defrosting can be performed quickly by separating and lowering the condensed water by gravity.

そして、導管の圧縮機と４方バルブとの間に温水加熱回路を設置して対流暖房と輻射暖房を兼ねることにより、快適な暖房が可能であり、騒音を低減するとともにいつも温水も生成することができるものである。   And, by installing a hot water heating circuit between the compressor of the conduit and the four-way valve, it can be used for both convection heating and radiant heating, enabling comfortable heating, reducing noise and always generating hot water. It is something that can be done.

また、冷媒用伝熱管間にブライン用伝熱管を配置することにより、構造が簡単であり、ヒートポンプシステムの設置場所で易しく求めることができる温水または冷水などをブラインとして利用することにより、維持管理が簡便になるものである。   In addition, by arranging the heat transfer pipe for the brine between the heat transfer pipes for the refrigerant, the structure is simple, and maintenance can be performed by using hot water or cold water that can be easily obtained at the installation location of the heat pump system as the brine. It becomes simple.

請求項２記載の発明は、暖房の時、輻射暖房を兼ねることで、快適な暖房をなし、さらに給湯用などの温水を簡便に生成することができるものである。   According to the second aspect of the present invention, when heating, it also serves as radiant heating, so that comfortable heating can be achieved, and hot water for hot water supply or the like can be easily generated.

請求項３記載の発明は、ケーシングに検知手段を設置することで、ブライン循環ポンプの制御を簡便で迅速に行うことができるものである。 According to a third aspect of the invention, by installing a detecting means in the casing, in which it is possible to rapidly perform simple control of the brine circulating pump.

請求項４記載の発明は、室外熱交換器の内部圧力の変動によってマイクロスイッチを接続または分離させることで、除霜時期を簡便で速かに合わせることができ、さらに除霜時間の調節を簡便になし得るものである。   In the invention according to claim 4, the defrosting time can be adjusted easily and quickly by connecting or separating the microswitch according to the fluctuation of the internal pressure of the outdoor heat exchanger, and the defrosting time can be easily adjusted. It can be done.

以下、添付図面を参照して本発明の好適な実施形態について詳細に説明する。
図１は本発明の実施形態の系統図を示すもので、符号１は基本冷凍回路を示す。前記基本冷凍回路１は、圧縮機２の吐出口、４方バルブ３、室内熱交換器４、冷却用膨張バルブ５、加熱用膨張バルブ６、室外熱交換器７及び前記４方バルブ３を導管８で順に連結し、前記４方バルブ３と圧縮機２の吸入口を吸入導管９で連結し、加熱運転の時は、室内熱交換器４が凝縮器として、室外熱交換器７が蒸発器として作用するようにし、冷却運転の時は、室外熱交換器７が凝縮器として、室内熱交換器４が蒸発器と作用するようにしたものである。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows a system diagram of an embodiment of the present invention. Reference numeral 1 denotes a basic refrigeration circuit. The basic refrigeration circuit 1 is connected to a discharge port of a compressor 2, a four-way valve 3, an indoor heat exchanger 4, a cooling expansion valve 5, a heating expansion valve 6, an outdoor heat exchanger 7, and the four-way valve 3. 8, the four-way valve 3 and the suction port of the compressor 2 are connected by a suction conduit 9. During the heating operation, the indoor heat exchanger 4 serves as a condenser and the outdoor heat exchanger 7 serves as an evaporator. In the cooling operation, the outdoor heat exchanger 7 acts as a condenser, and the indoor heat exchanger 4 acts as an evaporator.

符号１０は温水加熱回路を示すものである。前記温水加熱回路１０は、導管８の圧縮機２と４方バルブ３の間に冷媒バイパス管１１の両端を連結して凝縮器１２を設置し、前記凝縮器１２と熱交換関係を有する温水熱交換器１３を一側に設置し、他側には前記室内熱交換器４の設置床に埋設する放熱コイルまたはラジエーターなどの輻射熱発生手段１４及び給湯用熱交換器１５を循環ポンプ１７の取り付けられた温水循環管１６で連結設置するとともに、前記給湯用熱交換器１５に給湯槽１８を設置し、前記給湯槽１８に給水管１９ａと給湯管１９ｂを連結し、前記圧縮機２で圧縮された高温・高圧の冷媒蒸気の一部が凝
縮器１２で凝縮される時、その凝縮熱によって温水熱交換器１３で温水を生成し、後述するブライン加熱用熱交換器２１に加熱された温水を供給するか、あるいは輻射熱発生手段１４で輻射暖房を兼ねることにより、快適な暖房を行うかまたは浴用または給湯用温水を使用するものである。 Reference numeral 10 denotes a hot water heating circuit. The hot water heating circuit 10 is connected to both ends of the refrigerant bypass pipe 11 between the compressor 2 and the four-way valve 3 in the conduit 8 to install a condenser 12, and hot water heat having a heat exchange relationship with the condenser 12. A circulation pump 17 is attached to a heat exchanger 15 for radiant heat and a heat exchanger 15 for hot water supply, such as a heat radiating coil or a radiator embedded in the installation floor of the indoor heat exchanger 4 on the other side. The hot water circulation pipe 16 is connected and installed, a hot water supply tank 18 is installed in the hot water supply heat exchanger 15, a hot water supply pipe 19 a and a hot water supply pipe 19 b are connected to the hot water supply tank 18, and compressed by the compressor 2. When a part of the high-temperature / high-pressure refrigerant vapor is condensed in the condenser 12, hot water is generated in the hot water heat exchanger 13 by the heat of condensation, and heated water is supplied to the brine heating heat exchanger 21 described later. Or radiate By serving as a radiation heating by the heat generating unit 14, it is to use a conduct or bath or hot water for hot water supply comfortable heating.

符号２０は吸気温度調節手段を示すものである。前記吸気温度調節手段２０は、前記温水循環管１６にブライン加熱用熱交換器２１を並列に連結し、前記吸気導管９にブライン冷却用熱交換器２２をバイパスされるように連結し、前記ブライン加熱用及び冷却用熱交換器２１、２２に伝熱槽２３を形成してブラインを充填し、前記室外熱交換器７に吸気（供給）される外気の温度を調節する温度調節用熱交換器２７を設置し、前記伝熱槽２３に循環ポンプ２５の取り付けられた供給管２４と帰還管２６で連結することにより、加熱運転の際に、外気温度が低い時は、ブライン加熱用熱交換器２１によって伝熱槽２３内のブラインを加熱し、前記加熱されたブラインを温度調節用熱交換器２７に循環させて室外熱交換器７の除霜を行い、一方、冷却運転の際に、外気温度が高い時は、圧縮機２に吸入される低温・低圧の冷媒蒸気をブライン冷却用熱交換器２２に経由させて伝熱槽２３内のブラインを冷却し、前記冷却されたブラインによって、室外熱交換器７に供給される外気を冷却することにより、高温・高圧の冷媒蒸気の凝縮を効率よく行うものである。   Reference numeral 20 denotes intake air temperature adjusting means. The intake air temperature adjusting means 20 is connected to the hot water circulation pipe 16 in parallel with a brine heating heat exchanger 21, and is connected to the intake pipe 9 so that a brine cooling heat exchanger 22 is bypassed. A heat exchanger for temperature adjustment that forms a heat transfer tank 23 in the heat exchangers 21 and 22 for heating and cooling, is filled with brine, and adjusts the temperature of the outside air sucked (supplied) to the outdoor heat exchanger 7 27 and connected to the heat transfer tank 23 by a supply pipe 24 and a return pipe 26 to which a circulation pump 25 is attached, so that when the outside air temperature is low during the heating operation, a heat exchanger for heating the brine 21, the brine in the heat transfer tank 23 is heated, and the heated brine is circulated to the temperature adjusting heat exchanger 27 to defrost the outdoor heat exchanger 7. When the temperature is high, the compressor 2 The low-temperature and low-pressure refrigerant vapor that is sucked in is passed through the brine cooling heat exchanger 22 to cool the brine in the heat transfer tank 23, and the outside air supplied to the outdoor heat exchanger 7 is cooled by the cooled brine. By cooling, high-temperature and high-pressure refrigerant vapor is efficiently condensed.

前記室外熱交換器７及び温度調節用熱交換器２７は、図２及び図３に示すように、ケーシングＣに冷媒用伝熱管３１とブライン用伝熱管３２をそれぞれジグザグに形成して交互に垂直に配置し、前記冷媒用伝熱管３１とブライン用伝熱管３２にそれぞれ入口及び出口ヘッダー３３ａ、３３ｂ、３４ａ、３４ｂを設置し、冷媒用伝熱管３１は導管８に、かつブライン用伝熱管３２は供給管２４及び帰還管２６に連結し、前記冷媒用伝熱管３１及びブライン用伝熱管３２に複数の一体型フィン３５を垂直に設置し、フィン３５の上部にファン（押込ファン）３６を設置することにより、ブライン用伝熱管３２に供給される加熱または冷却されたブラインをフィン３５及び冷媒用伝熱管３１に迅速で効率よく伝達するようにしたものである。 As shown in FIGS. 2 and 3, the outdoor heat exchanger 7 and the temperature adjusting heat exchanger 27 are alternately vertical by forming a refrigerant heat transfer pipe 31 and a brine heat transfer pipe 32 in a zigzag on the casing C, respectively. The inlet and outlet headers 33a, 33b, 34a, 34b are installed in the refrigerant heat transfer tube 31 and the brine heat transfer tube 32, respectively, the refrigerant heat transfer tube 31 is connected to the conduit 8, and the brine heat transfer tube 32 is Connected to the supply pipe 24 and the return pipe 26, a plurality of integral fins 35 are installed vertically on the refrigerant heat transfer pipe 31 and the brine heat transfer pipe 32, and a fan (push-in fan) 36 is installed on the fin 35. Thus, the heated or cooled brine supplied to the brine heat transfer tube 32 is quickly and efficiently transmitted to the fins 35 and the refrigerant heat transfer tube 31.

そして、前記循環ポンプ２５は、室外熱交換器７に設置した温度センサー、結露センサーなどの検知手段３７またはタイマー（図示せず）によって簡便で速かに制御し、前記検知手段３７のうち、加熱運転用は、ファンシュラウド３８にマイクロスイッチ３９を設置し、ファンシュラウド３８の内部の前記前記マイクロスイッチ３９の隣接位置にレバー４０の一端を ヒンジで結合するとともに他端にウェイト４１をネジで結合し、フィン３５間に結露が発生すれば、ファン３６の駆動によって室外熱交換器７内の圧力が上昇し、室外熱交換器７内の圧力上昇によってレバー４０の他端が上昇しながらマイクロスイッチ３９と接続して循環ポンプ２５を駆動することにより、除霜時期を簡便で速かに合わせることができ、さらにウェイト４１をレバー４０のヒンジ点から遠くまたは近く調節することにより除霜時間の調節を簡便になし得るものである。 The circulation pump 25 is controlled simply and quickly by a detection means 37 such as a temperature sensor or a dew condensation sensor installed in the outdoor heat exchanger 7 or a timer (not shown). For operation, a micro switch 39 is installed in the fan shroud 38, one end of a lever 40 is connected to the position adjacent to the micro switch 39 inside the fan shroud 38 by a hinge, and a weight 41 is connected to the other end by a screw. if condensation occurs between the fins 35, the pressure in the outdoor heat exchanger 7 is increased by the drive of the fan 36, the other end of the lever 40 I by the pressure rise inside the outdoor heat exchanger 7 with increased By connecting the micro switch 39 and driving the circulation pump 25, the defrosting time can be adjusted easily and quickly. The defrosting time can be easily adjusted by adjusting the distance from or close to the hinge point of the lever 40.

未説明符号５１、５２はチェックバルブ、５３は凍結防止または始動用ヒーター、５４〜６０はバルブ、６１、６２は温度センサーである。   Reference numerals 51 and 52 are check valves, 53 is a freezing prevention or starting heater, 54 to 60 are valves, and 61 and 62 are temperature sensors.

以上のような本発明の実施例は、加熱運転の時は、バルブ５４、５９を開放し、４方バルブ３を、冷媒が実線矢印の方向に流れるように、操作した後、圧縮機２を駆動すれば、圧縮機２で圧縮された高温・高圧の冷媒蒸気は凝縮器として作用する室内熱交換器４に流入して凝縮され、その凝縮熱によって流体を加熱させることによって温水を生成するか空気調和（対流暖房）の機能などを行い、前記室内熱交換器４で凝縮された高温・高圧の冷媒液はチェックバルブ５１を通じて加熱用膨張バルブ６で膨張された後、蒸発器として作用する室外熱交換器７で外気を熱源として蒸発され、前記室外熱交換器７で蒸発された低温・低圧の冷媒蒸気は４方バルブ３を通った後、吸入導管９を経由しながら乾飽和または
過熱蒸気化状態になって圧縮機２に吸入され、前記サイクルを繰り返すものである。 In the embodiment of the present invention as described above, during the heating operation, the valves 54 and 59 are opened, and the four-way valve 3 is operated so that the refrigerant flows in the direction of the solid arrow, and then the compressor 2 is operated. If driven, does the high-temperature / high-pressure refrigerant vapor compressed by the compressor 2 flow into the indoor heat exchanger 4 acting as a condenser and condense and heat the fluid by the condensation heat to generate hot water? The outdoor high-temperature and high-pressure refrigerant liquid condensed by the indoor heat exchanger 4 is expanded by the heating expansion valve 6 through the check valve 51 and then functions as an evaporator. The low-temperature and low-pressure refrigerant vapor evaporated in the heat exchanger 7 using outside air as a heat source passes through the four-way valve 3 and then is dry-saturated or superheated steam via the intake conduit 9. Compressed compressor It is sucked into, but to repeat the cycle.

そして、前記のように加熱運転を行って室内熱交換器４で対流暖房運転を行う場合、バルブ５５及びバルブ５７をさらに開放し、圧縮機２で圧縮された高温・高圧の冷媒蒸気の一部を冷媒バイパス管１１に流れるようにして凝縮器１２で凝縮させ、前記凝縮器１２の凝縮熱によって、温水熱交換器１３を流れる温水を加熱して循環ポンプ１７を駆動し、輻射熱発生手段１４で輻射暖房を行うことで対流暖房と輻射暖房を同時に行うことができ、前記のように輻射暖房と対流暖房を同時に行う時、バルブ５５の開度を増大し、バルブ５４の開度を減少させるとともに、室内熱交換器４の付設ファンの回転数を減少させれば、輻射暖房を主として行うから、気流が居住者に触れる量が少なくて快適な暖房が可能であり、騒音も低減するものである。   When the heating operation is performed as described above and the convection heating operation is performed by the indoor heat exchanger 4, the valve 55 and the valve 57 are further opened, and a part of the high-temperature / high-pressure refrigerant vapor compressed by the compressor 2. Is caused to flow through the refrigerant bypass pipe 11 and is condensed by the condenser 12, the hot water flowing through the hot water heat exchanger 13 is heated by the condensation heat of the condenser 12 to drive the circulation pump 17, and the radiant heat generating means 14 By performing radiant heating, convection heating and radiant heating can be performed simultaneously. As described above, when radiant heating and convection heating are performed simultaneously, the opening of the valve 55 is increased and the opening of the valve 54 is decreased. If the number of rotations of the fan attached to the indoor heat exchanger 4 is reduced, radiation heating is mainly performed, so that the amount of airflow that touches the occupants is small, and comfortable heating is possible, and noise is also reduced.

そして、室内の床の温度が設定温度になれば、温度調節器（図示せず）によってバルブ５７が閉鎖し、バルブ５８が開放して温水加熱回路１０は続いて運転され、前記温水加熱回路１０は、給湯槽１８に設置した温度センサー６１の設定温度によってバルブ５８、５５を閉鎖することにより、運転が停止するものである。また、給湯槽１８から浴用と給湯用温水を共に得ることができるものである。   When the temperature of the floor in the room reaches the set temperature, the valve 57 is closed by a temperature controller (not shown), the valve 58 is opened, and the hot water heating circuit 10 is subsequently operated. The operation is stopped by closing the valves 58 and 55 according to the set temperature of the temperature sensor 61 installed in the hot water tank 18. Further, both hot water for bathing and hot water for hot water can be obtained from the hot water tank 18.

そして、冷却運転の時は、バルブ５４、５９のみを開放し、４方バルブ３を、冷媒が点線矢印の方向に流れるように、操作した後、圧縮機２を駆動すれば、圧縮機２で圧縮された高温・高圧の冷媒蒸気は凝縮器として作用する室外熱交換器７に流入されて凝縮され、前記室外熱交換器７で凝縮された高温・高圧の冷媒液はチェックバルブ５２を経由して冷却用膨張バルブ５で膨張された後、蒸発器として作用する室内熱交換器４に流入されて、室内熱交換器４の周りの流体から蒸発熱を吸収することにより、冷水を生成するか空気調和（冷房）の機能などを行い、前記室内熱交換器４で蒸発された低温・低圧の冷媒蒸気は４方バルブ３及び吸入導管９を通じて圧縮機２に吸入され、前記サイクルを繰り返すものである。   During the cooling operation, only the valves 54 and 59 are opened, and the four-way valve 3 is operated so that the refrigerant flows in the direction of the dotted arrow, and then the compressor 2 is driven. The compressed high-temperature / high-pressure refrigerant vapor flows into the outdoor heat exchanger 7 acting as a condenser and is condensed, and the high-temperature / high-pressure refrigerant liquid condensed in the outdoor heat exchanger 7 passes through the check valve 52. Is expanded by the cooling expansion valve 5 and then flows into the indoor heat exchanger 4 acting as an evaporator and absorbs the heat of evaporation from the fluid around the indoor heat exchanger 4 to generate cold water. The air conditioning (cooling) function is performed, and the low-temperature and low-pressure refrigerant vapor evaporated in the indoor heat exchanger 4 is sucked into the compressor 2 through the four-way valve 3 and the suction conduit 9, and the cycle is repeated. is there.

また、この冷却運転の時にも、前記暖房運転の時と同様に運転して、バルブ５７のみを閉鎖すれば、給湯槽１８から浴用と給湯用の温水を共に得ることができるものである。   Also, during this cooling operation, if the same operation as in the heating operation is performed and only the valve 57 is closed, both hot water for bathing and hot water supply can be obtained from the hot water tank 18.

一方、加熱運転の時、外気温度が露点以下に下降する場合には、バルブ５６を開放して、加熱された温水を伝熱槽２３に内蔵されたブライン加熱用熱交換器２１に循環させ、伝熱槽２３内のブラインを設定温度（例えば、４５℃）に加熱して貯蔵し、この状態で、室外熱交換器７に設置された検知手段３７が室外熱交換器７の着霜を検知し、その信号を循環ポンプ２５に出力して駆動させれば、伝熱槽２３内の加熱されたブラインが冷媒用伝熱管３１間に設置されたブライン用伝熱管３２を循環しながら、ブラインの保有熱をフィン３５及び冷媒用伝熱管３１に伝逹することで除霜を実施するものである。   On the other hand, when the outside air temperature falls below the dew point during the heating operation, the valve 56 is opened and the heated hot water is circulated to the brine heating heat exchanger 21 built in the heat transfer tank 23. The brine in the heat transfer tank 23 is heated to a set temperature (for example, 45 ° C.) and stored. In this state, the detection means 37 installed in the outdoor heat exchanger 7 detects frost formation on the outdoor heat exchanger 7. When the signal is output to the circulation pump 25 and driven, the heated brine in the heat transfer tank 23 circulates through the brine heat transfer tube 32 installed between the refrigerant heat transfer tubes 31, Defrosting is performed by transferring the retained heat to the fins 35 and the refrigerant heat transfer tubes 31.

前記のように室外熱交換器７の除霜を実施する時、初期にはファン３６の駆動を停止し、一定時間の後にファン３６を駆動すれば、外気がフィン３５の間に圧送され、凝縮水は重力によって速かにフィン３５から分離されて下降するので、除霜が迅速で効率的になる
ものであり、前記室外熱交換器７の除霜が完了すれば、検知手段３７の出力信号中断によって循環ポンプ２５の駆動が停止するので、通常の加熱運転を実施するものである。 As described above, when the defrosting of the outdoor heat exchanger 7 is performed, the driving of the fan 36 is initially stopped, and if the fan 36 is driven after a predetermined time, the outside air is pumped between the fins 35 and condensed. Since water is quickly separated from the fins 35 by gravity and descends, defrosting is quick and efficient. When the defrosting of the outdoor heat exchanger 7 is completed, the output signal of the detection means 37 Since the driving of the circulation pump 25 is stopped by the interruption, a normal heating operation is performed.

そして、冷却運転の時、外気温が高い時は、バルブ５９を閉鎖しバルブ６０を開放すれば、蒸発器として作用する室内熱交換器４で蒸発された低温・低圧の冷媒ガスが伝熱槽２３に内蔵されたブライン冷却用熱交換器２２を通る時、伝熱槽２３内のブラインを冷却して貯蔵し、前記状態で検知手段３７が外気温度を検知し、その出力信号によって循環ポンプ２５を駆動すれば、伝熱槽２３内の冷却されたブラインが室外熱交換器７の冷媒用伝熱管３１間に設置されたブライン用伝熱管３２を循環しながらフィン３５及び冷媒用伝熱管３１を冷却することにより、冷媒用伝熱管３１を通過する高温・高圧の冷媒蒸気の凝縮を均一で効率よく行って成績係数を増大させるものである。 During the cooling operation, when the outside air temperature is high, if the valve 59 is closed and the valve 60 is opened, the low-temperature and low-pressure refrigerant gas evaporated in the indoor heat exchanger 4 acting as an evaporator is transferred to the heat transfer tank. when passing through the brine cooling heat exchanger 22 incorporated in the 23, and stored in cooled brine Dennetsuso 23, detecting means 37 detects the outside air temperature in the state, and the circulating pump by an output signal of its 25, the cooled brine in the heat transfer tank 23 circulates through the brine heat transfer tubes 32 installed between the refrigerant heat transfer tubes 31 of the outdoor heat exchanger 7, and the fins 35 and the refrigerant heat transfer tubes 31. Is used to uniformly and efficiently condense the high-temperature and high-pressure refrigerant vapor passing through the refrigerant heat transfer tube 31, thereby increasing the coefficient of performance.

本発明の実施例の系統図である。It is a systematic diagram of the Example of this invention. 本発明の実施例の室外熱交換器の一部切断斜視図である。It is a partial cutaway perspective view of the outdoor heat exchanger of the Example of this invention. 本発明の実施例の室外熱交換器の断面図である。It is sectional drawing of the outdoor heat exchanger of the Example of this invention.

符号の説明Explanation of symbols

１ 基本冷凍回路
４ 室内熱交換器
７ 室外熱交換器
１０ 温水加熱回路
２０ 吸気温度調節手段
２１ ブライン加熱用熱交換器
２２ ブライン冷却用熱交換器
２３ 伝熱槽
３１ 冷媒用伝熱管
３２ ブライン用伝熱管 DESCRIPTION OF SYMBOLS 1 Basic refrigeration circuit 4 Indoor heat exchanger 7 Outdoor heat exchanger 10 Hot water heating circuit 20 Intake temperature control means 21 Heat exchanger for brine heating 22 Heat exchanger for brine cooling 23 Heat transfer tank 31 Heat exchanger tube for refrigerant 32 Transfer for brine Heat pipe

Claims (4)

圧縮機、４方バルブ、室内熱交換器、冷却用膨張バルブ、加熱用膨張バルブ、室外熱交換器及び前記４方バルブを導管で順に連結し、前記４方バルブと圧縮機を吸入導管で連結した基本冷凍回路と；前記導管の圧縮機と４方バルブとの間に連結した温水加熱回路と；前記温水加熱回路にブライン加熱用熱交換器を並列に連結し、前記吸入導管にブライン冷却用熱交換器をバイパスされるように連結して前記ブライン加熱用熱交換器及びブライン冷却用熱交換器に伝熱槽を形成し、前記室外熱交換器に温度調節用熱交換器を設置し、前記伝熱槽に循環ポンプの取り付けられた供給管と帰還管を介して連結した吸気温度調節手段と；を備え、前記室外熱交換器及び温度調節用熱交換器は、ケーシングに冷媒用伝熱管とブライン用伝熱管を交互に垂直に配置し、前記冷媒用伝熱管及びブライン用伝熱管に複数のフィンを垂直に設置し、
加熱運転の際に、外気温度が低い時は、ブライン加熱用熱交換器によって伝熱槽内のブラインを加熱し、前記加熱されたブラインをブライン用伝熱管に循環させて室外熱交換器の除霜を行い、一方、冷却運転の際に、外気温度が高い時は、圧縮機に吸入される冷媒蒸気をブライン冷却用熱交換器に経由させて伝熱槽内のブラインを冷却し、前記冷却されたブラインをブライン用伝熱管に循環させて、室外熱交換器に供給される外気を冷却することにより、高温・高圧の冷媒蒸気の凝縮を行なう、ヒートポンプシステム。 Compressor, 4-way valve, indoor heat exchanger, cooling expansion valve, heating expansion valve, outdoor heat exchanger, and the 4-way valve are connected in order by a conduit, and the 4-way valve and the compressor are connected by a suction conduit. A basic refrigeration circuit; a hot water heating circuit connected between the compressor of the conduit and a four-way valve; a brine heating heat exchanger connected in parallel to the hot water heating circuit and a brine cooling to the suction conduit A heat exchanger is connected to be bypassed to form a heat transfer tank in the brine heating heat exchanger and the brine cooling heat exchanger, and a temperature adjusting heat exchanger is installed in the outdoor heat exchanger, An intake air temperature adjusting means connected to the heat transfer tank through a return pipe and a supply pipe to which a circulation pump is attached, and the outdoor heat exchanger and the temperature adjusting heat exchanger have a refrigerant heat transfer pipe in the casing. And brine heat transfer tubes alternately Arranged, placed vertically a plurality of fins in the refrigerant heat transfer pipe and brine heat transfer pipe,
During the heating operation, when the outside air temperature is low, the brine in the heat transfer tank is heated by the brine heating heat exchanger, and the heated brine is circulated through the brine heat transfer tube to remove the outdoor heat exchanger. On the other hand, when the outside air temperature is high during the cooling operation, the refrigerant vapor sucked into the compressor is passed through the brine cooling heat exchanger to cool the brine in the heat transfer tank, and the cooling A heat pump system that condenses high-temperature and high-pressure refrigerant vapor by circulating the brine that has passed through the brine heat transfer tube and cooling the outside air supplied to the outdoor heat exchanger . 前記温水加熱回路は、導管の圧縮機と４方バルブとの間に冷媒バイパス管の両端を連結して凝縮器を設置し、前記凝縮器と熱交換関係を有する温水熱交換器を一側に設置し、他側には前記室内熱交換器の設置床に埋設する輻射熱発生手段及び給湯用熱交換器を循環ポンプの取り付けられた温水循環管で連結設置するとともに、前記給湯用熱交換器に給湯槽を設置してなる、請求項１に記載のヒートポンプシステム。   In the hot water heating circuit, a condenser is installed by connecting both ends of a refrigerant bypass pipe between a compressor of a conduit and a four-way valve, and the hot water heat exchanger having a heat exchange relationship with the condenser is placed on one side. Installed on the other side is a radiant heat generating means embedded in the floor of the indoor heat exchanger and a hot water supply heat exchanger connected by a hot water circulation pipe to which a circulation pump is attached, and the hot water supply heat exchanger. The heat pump system according to claim 1, wherein a hot water tank is installed. 前記ケーシングに、温度または結露を検知することにより、ブライン用の循環ポンプの駆動を制御するための検知手段を付設した、請求項１に記載のヒートポンプシステム。 The heat pump system according to claim 1, wherein the casing is provided with detection means for controlling driving of a circulation pump for brine by detecting temperature or condensation . 前記検知手段は、ファンシュラウドにマイクロスイッチを設置し、前記ファンシュラウドの内部の前記マイクロスイッチの隣接位置にレバーの一端をネジで結合するとともに他端にウェイトをネジで結合してなしてなり、前記レバーの前記他端と前記マイクロスイッ
チとの接続の有無により結露の有無を検知する、請求項３に記載のヒートポンプシステム。 Said detecting means, a microswitch installed in the fan shroud, Ri the name weights one end of the lever to the position adjacent to the micro switch inside the fan shroud to the other end as well as combined in a screw form attached by screws The other end of the lever and the microswitch.
The presence or absence of connection of the switch you detect the presence of condensation, the heat pump system of claim 3.
JP2007042607A 2006-02-24 2007-02-22 Heat pump system Expired - Fee Related JP4359624B2 (en)

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CN105890208A (en) * 2016-04-18 2016-08-24 上海雷圣医疗设备有限公司 Dual refrigeration systems
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CN109099617A (en) * 2018-09-03 2018-12-28 浙江杭强制冷设备有限公司 A kind of Vaporizor for refrigerator
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