JP2008032376A - Heat pump liquid heating air conditioner or apparatus - Google Patents

Heat pump liquid heating air conditioner or apparatus Download PDF

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JP2008032376A
JP2008032376A JP2006275793A JP2006275793A JP2008032376A JP 2008032376 A JP2008032376 A JP 2008032376A JP 2006275793 A JP2006275793 A JP 2006275793A JP 2006275793 A JP2006275793 A JP 2006275793A JP 2008032376 A JP2008032376 A JP 2008032376A
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liquid
heat exchanger
heating
liquid heating
way valve
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Tsutomu Kuroda
力 黒田
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/18—Hot-water central heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1072—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0096—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater combined with domestic apparatus
    • 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
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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
    • F25B2313/004—Outdoor unit with water as a heat sink or heat source
    • 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
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • 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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump liquid heating air conditioner or an apparatus, provided with functions not only for hot water supply but also for cooling, heating, floor heating and the like, and operable safely and stably as a refrigerating cycle, by one system capable of using waste heat in the cooling to heat a liquid such as hot water. <P>SOLUTION: The heat pump liquid heating air conditioner, or an apparatus includes the refrigerating cycle connected sequentially with a compressor, a liquid heating heat exchanger, a four-way valve, an indoor heat exchanger, an expansion valve, an outdoor heat exchanger and a four-way valve, by a refrigerant pipe, and a circulation pump in a liquid circuit connected to the liquid heating heat exchanger. A system having the refrigerating cycle includes the liquid circuit with the hot-water storage tank and the circulation pump connected to the liquid circuit of the liquid heating heat exchanger, and for turning on and off the circulation pump by conditions of a cooling temperature and a heating temperature, or for changing an operation speed of the circulation pump. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ヒートポンプ液体加熱エアコンに係り、冷房運転時も、暖房運転時も廃熱を利用出来る範囲を広くし、高効率で快適な空調、及び給湯を可能としたヒートポンプ液体加熱エアコン、或いはその応用機器に関する。The present invention relates to a heat pump liquid heating air conditioner, and widens the range in which waste heat can be used both during cooling operation and heating operation, enabling high efficiency and comfortable air conditioning and hot water supply, or a heat pump liquid heating air conditioner thereof Related to applied equipment.

従来、ヒートポンプ給湯機として図５に示すような構造を有し、ヒートポンプ給湯エアコンとしては、特許文献特開２００１−２４８９３７の図６に示すものや、特開特願２００４−６１６１３の図７に示すものなどが開示されている。
図５に示す回路のものは給湯を行うものであり、室内の冷房には別の冷凍サイクルを必要としていた。Conventionally, the heat pump water heater has a structure as shown in FIG. 5, and the heat pump hot water supply air conditioner is shown in FIG. 6 of Japanese Patent Application Laid-Open No. 2001-248937 or shown in FIG. 7 of Japanese Patent Application No. 2004-61613. Things are disclosed.
The circuit shown in FIG. 5 supplies hot water, and a separate refrigeration cycle is required for indoor cooling.

また図６に示すものはヒートポンプ給湯エアコンとして冷房時排熱を利用し運転できるものとし、圧縮機、四方弁、水加熱用熱交換器、室外熱交換機用流量制御弁、室外熱交換器、四方弁を冷媒配管で順次接続し、又、室内熱交換器用流量制御弁及び室内熱交換器を室外熱交換機用制御弁及び室外熱交換器を並列に設けた構成で開示されている。
しかしながら、前記水加熱用熱交換器に供給される水の温度が高い時は冷房能力が落ちてしまうという欠点があった。6 is a heat pump hot water supply air conditioner that can be operated using exhaust heat during cooling, compressor, four-way valve, heat exchanger for water heating, flow control valve for outdoor heat exchanger, outdoor heat exchanger, four-way It is disclosed that the valves are sequentially connected by refrigerant piping, and the flow control valve for indoor heat exchanger and the indoor heat exchanger are provided in parallel with the control valve for outdoor heat exchanger and the outdoor heat exchanger.
However, when the temperature of the water supplied to the water heating heat exchanger is high, there is a disadvantage that the cooling capacity is lowered.

図７示す例は四方弁を複数配置した構成になっており、冷房、暖房、給湯の各モードにより冷媒の流れない回路が出来る為、冷媒溜まり、オイル溜まりが出来易く、逆止弁、電磁弁等を回路に複数入れたり、或いは冷媒回収、オイル回収等の作業をさせないと安定した冷凍サイクルが出来ないという複雑な制御とコストアップの欠点があった。The example shown in FIG. 7 has a configuration in which a plurality of four-way valves are arranged, and a circuit in which refrigerant does not flow can be formed by each mode of cooling, heating, and hot water supply, so that a refrigerant pool and an oil pool can be easily formed. There is a disadvantage of complicated control and cost increase that a stable refrigeration cycle cannot be performed unless a plurality of components are put in the circuit, or operations such as refrigerant recovery and oil recovery are performed.

特開２００１−２４８９３７JP 2001-248937 A 特願２００４−６１６１３Japanese Patent Application No. 2004-61613

給湯のみならず、冷房、暖房、床暖等の機能を持たせ、しかも冷房時の廃熱を給湯等液体加熱に利用でき、冷凍サイクルとして安全で安定した運転の出来るものが要望されていた。There has been a demand for not only hot water supply, but also functions such as cooling, heating, floor heating, etc., and that waste heat from cooling can be used for liquid heating such as hot water supply, and a safe and stable operation can be performed as a refrigeration cycle.

課題を解決する為の手段Means to solve the problem

本願請求項１の発明では、圧縮機、液体加熱用熱交換器、四方弁、室内側空気熱交換器、流量制御弁、室外側空気熱交換器、前記四方弁を冷媒配管により順次接続したことを特徴とするヒートポンプ液体加熱エアコンで、液体加熱用熱交換器の液体循環回路側に循環ポンプを具備したことを特徴とするのを要旨としている。In the invention of claim 1 of the present application, the compressor, the liquid heating heat exchanger, the four-way valve, the indoor air heat exchanger, the flow control valve, the outdoor air heat exchanger, and the four-way valve are sequentially connected by refrigerant piping. The heat pump liquid heating air conditioner is characterized in that a circulation pump is provided on the liquid circulation circuit side of the heat exchanger for liquid heating.

本願請求項２の発明では、圧縮機、液体加熱用熱交換器、四方弁、流量制御弁、室外側空気熱交換器、前記四方弁、室内側空気熱交換器を冷媒配管により順次接続したことを特徴とするヒートポンプ液体加熱エアコンで、液体加熱用熱交換器の液体循環回路側に循環ポンプを具備したことを特徴とするのを要旨としている。In the invention of claim 2, the compressor, the liquid heating heat exchanger, the four-way valve, the flow control valve, the outdoor air heat exchanger, the four-way valve, and the indoor air heat exchanger are sequentially connected by the refrigerant pipe. The heat pump liquid heating air conditioner is characterized in that a circulation pump is provided on the liquid circulation circuit side of the heat exchanger for liquid heating.

本願請求項３の発明では、液体加熱用熱交換器を圧縮機吐出側と四方弁の冷媒配管途中に具備する冷凍サイクルと、前記液体加熱用熱交換器に流れ込む冷媒温度と前記液体加熱用熱交換器に流れ込む液体温度との温度差に応じ、又は稼動指令により、前記液体加熱用熱交換器の液体を循環させる循環ポンプがオン、オフ、或いは稼動スピード変更する制御を有す請求項１又は２のヒートポンプ液体加熱エアコン、および機器である事を要旨としている。In the invention of claim 3, the refrigeration cycle comprising a liquid heating heat exchanger in the middle of the refrigerant piping of the compressor discharge side and the four-way valve, the refrigerant temperature flowing into the liquid heating heat exchanger, and the liquid heating heat 2. The control according to claim 1, wherein the circulation pump for circulating the liquid in the liquid heating heat exchanger is turned on or off or the operation speed is changed in accordance with a temperature difference from a liquid temperature flowing into the exchanger or according to an operation command. It is the gist that it is the heat pump liquid heating air conditioner and equipment of 2.

本願請求項４の発明では、液体加熱用熱交換器２、貯湯タンク、循環ポンプがシリーズに繋がれた加熱液体回路に輻射暖房用配管１２を貯湯タンクと並列に配置し、貯湯と輻射暖房を切り替えられる回路を具備する請求項１又は２のヒートポンプ液体加熱エアコン、および機器である事を要旨としている。In the invention of claim 4 of the present application, the radiant heating pipe 12 is arranged in parallel with the hot water storage tank in the heating liquid circuit in which the heat exchanger 2 for liquid heating, the hot water storage tank, and the circulation pump are connected in series. The gist of the present invention is the heat pump liquid heating air conditioner and the apparatus according to claim 1 or 2, further comprising a circuit to be switched.

発明の効果The invention's effect

本発明と従来の冷凍サイクルとの根本的な違いの第一は図５、図６、及び図７を見て明らかなように液体加熱用熱交換器を圧縮機吐出と四方弁の間に持っていることと、加熱液体側回路にオン、オフ、或いは運転スピード可変の出来るポンプを配置した事で、圧縮機吐出冷媒が低温の時の液体加熱熱交換器内の加熱液体側の液体温度の低下をポンプ運転停止、或いはポンプ運転スピード低減で回避できるのみならず、液体加熱熱交換器内冷媒側に於いても液体加熱モード、冷房モード、および暖房モード等にポンプ運転停止、或いはポンプ運転スピード低減する事により、冷媒不足や、冷媒過多になる状態を回避し、安定した冷凍サイクルを作る事が出来る。また、本発明の回路は、どのような運転モードでも冷媒、オイルが澱む所がなく安定した冷凍サイクルで運転できるメリットを始め、暖房と液体加熱の同時運転が出来るだけでなく、冷房時、廃熱を液体加熱に利用する事が出来、液体加熱、冷房の２つの目的も同時に出来る事となる。The first fundamental difference between the present invention and the conventional refrigeration cycle is that a heat exchanger for heating the liquid is provided between the compressor discharge and the four-way valve, as is apparent from FIGS. And the fact that the pump that can be turned on / off or variable in operating speed is arranged in the heating liquid side circuit, the liquid temperature on the heating liquid side in the liquid heating heat exchanger when the refrigerant discharged from the compressor is low Not only can the decrease be avoided by stopping the pump operation or reducing the pump operation speed, but also in the liquid heating mode, cooling mode, and heating mode, etc. on the refrigerant side in the liquid heating heat exchanger. By reducing it, it is possible to avoid a shortage of refrigerant or a state where the refrigerant is excessive, and a stable refrigeration cycle can be created. In addition, the circuit of the present invention not only has the advantage of being able to operate in a stable refrigeration cycle without refrigerant or oil stagnation in any operation mode, but also allows simultaneous operation of heating and liquid heating, as well as waste during cooling. Heat can be used for liquid heating, and the two purposes of liquid heating and cooling can be performed simultaneously.

発明を実施する為の最良の形態BEST MODE FOR CARRYING OUT THE INVENTION

、,

以下、図１から図７までの図を用い、請求項１、請求項２、請求項３、及び請求項４の発明を実施する為の最良の形態、実施例を説明する。
図１は図３に示す請求項１の冷凍サイクルを用いたヒートポンプ液体加熱エアコンの実施例の一つで、冷媒回路は圧縮機１、液体加熱用熱交換器２、四方弁３、室内側空気熱交換器４、流量制御弁５、室外側空気熱交換器６、前記四方弁３を介して前記圧縮機１の吸い込み側に冷媒配管により接続している。
室内側空気熱交換器４、及び室外空気側熱交換器６には、それぞれ室内側ファン７、と室外側ファン８が具備されている。
前記液体加熱用熱交換器２の液体側の液体循環配管には循環ポンプ９、三方弁１１、輻射暖房用配管１２、貯湯タンク１０が接続されている。
図１に示される本発明の持っている機能、すなわち液体加熱、輻射暖房、冷房、暖房の各モードについて以下に説明する。
上記いずれのモードに於いても、圧縮機１を稼動すると高温の冷媒が液体加熱用熱交換器２の方向に流れ液体回路の液体は加熱される。
冷媒回路の冷媒はその後、四方弁３に流れ込み暖房運転であれば、四方弁３内を実線で示した方向に流れ、冷媒配管に沿って実線の矢印で示されるように室内空気熱交換器４に流れる。暖房運転をするには室内側ファン７を稼動する。
室内側空気熱交換器４をでた冷媒は流量制御弁５で絞られ、その先に接続されている室外側空気熱交換器６で室外側ファン８の稼動により空気から熱を取り冷媒は蒸発し、前記四方弁３内実線で示されている方向に流れ、圧縮機１に吸入され、また高温の冷媒となって圧縮機１から吐出し、前記した流れを繰り返す。
以上は暖房モードとしての説明であるが、同時に液体加熱モードも兼ねている。液体加熱の液体側の説明をすると、液体回路側は三方弁を実線の矢印で示した方向に流れるようにしておき、循環ポンプ９が稼動すれば、貯湯タンク１０内の液体は循環ポンプ９に吸引され、液体加熱用熱交換器２側に吐出し、高温冷媒で加熱され、貯湯タンク内熱交換器１６に送られ、貯湯タンク１０内の貯湯タンク内熱交換器１６の外の液体に放熱し、貯湯タンク内熱交換器１６の中を流れ、また循環ポンプ９に吸われ、この流れを繰り返す。
以上は暖房モード、液体加熱モード同時並行についての説明だが、ポンプ運転をオフすれば暖房中心モード、逆に室内ファン７をオフすれば液体加熱中心のモードとなる。In the following, the best modes and embodiments for carrying out the inventions of claims 1, 2, 3, and 4 will be described with reference to FIGS. 1 to 7.
FIG. 1 is one of the embodiments of the heat pump liquid heating air conditioner using the refrigeration cycle of claim 1 shown in FIG. 3, and the refrigerant circuit is a compressor 1, a liquid heating heat exchanger 2, a four-way valve 3, indoor air. A refrigerant pipe is connected to the suction side of the compressor 1 through a heat exchanger 4, a flow control valve 5, an outdoor air heat exchanger 6, and the four-way valve 3.
The indoor air heat exchanger 4 and the outdoor air heat exchanger 6 are provided with an indoor fan 7 and an outdoor fan 8, respectively.
A circulation pump 9, a three-way valve 11, a radiant heating pipe 12, and a hot water storage tank 10 are connected to the liquid circulation pipe on the liquid side of the heat exchanger 2 for heating the liquid.
The functions of the present invention shown in FIG. 1, that is, each mode of liquid heating, radiant heating, cooling, and heating will be described below.
In any of the above modes, when the compressor 1 is operated, a high-temperature refrigerant flows in the direction of the liquid heating heat exchanger 2 to heat the liquid in the liquid circuit.
Thereafter, the refrigerant in the refrigerant circuit flows into the four-way valve 3 and flows in the direction indicated by the solid line in the four-way valve 3 in the heating operation, and the indoor air heat exchanger 4 as indicated by the solid arrow along the refrigerant pipe. Flowing into. To perform the heating operation, the indoor fan 7 is operated.
The refrigerant from the indoor air heat exchanger 4 is throttled by the flow control valve 5, and the refrigerant is evaporated by taking heat from the air by the operation of the outdoor fan 8 connected to the flow rate control valve 5. Then, the refrigerant flows in the direction indicated by the solid line in the four-way valve 3 and is sucked into the compressor 1 and is discharged from the compressor 1 as a high-temperature refrigerant, and the above-described flow is repeated.
The above is the description of the heating mode, but at the same time, it also serves as the liquid heating mode. When the liquid side of the liquid heating is described, the liquid circuit side is made to flow the three-way valve in the direction indicated by the solid arrow, and if the circulation pump 9 is operated, the liquid in the hot water storage tank 10 is transferred to the circulation pump 9. It is sucked, discharged to the liquid heating heat exchanger 2 side, heated by the high-temperature refrigerant, sent to the hot water tank internal heat exchanger 16, and dissipated to the liquid outside the hot water tank internal heat exchanger 16 in the hot water tank 10. Then, it flows through the heat exchanger 16 in the hot water storage tank and is sucked into the circulation pump 9 to repeat this flow.
The above is a description of the heating mode and the liquid heating mode simultaneously, but when the pump operation is turned off, it becomes the heating center mode, and conversely, when the indoor fan 7 is turned off, the mode becomes the liquid heating center mode.

貯湯タンク１０内の温度を液体温度センサ１３が感知し、目的の温度になった時や、液体加熱用熱交換器２の冷媒高圧側温度センサ１４の温度が液体温度センサ１３より低かった場合は循環ポンプ９の運転をオフする。
また、床暖房等輻射暖房をしたい時は、輻射暖房用配管１２に温水を流すべく、三方弁１１で液体が輻射暖房用配管１２に流れるように破線の矢印の方に切り替えれば、貯湯タンク１０をバイパスした流れとなり輻射暖房モードとなる。
冬季暖房運転、液体加熱運転をすると室外側空気熱交換器６の空気側表面が凍結し除霜の必要が生じる事があるが、除霜モード時、四方弁３は切り替わり、四方弁３内破線で示した方向に冷媒は流れ、高圧で熱い冷媒は室外側熱交換器６内部を通り表面の霜、氷を溶かし、冷媒は流量制御弁５で絞られ、室内熱交換器４で蒸発し、４方弁を経由し、圧縮機に戻る。冷媒流れとしては次に述べる冷房時モード時と同じ冷媒の流れであるが、除霜時は室内ファン７も、室外ファン８もオフの状態である点が大きく異なる。本発明では液体熱交換器２と室内側空気熱交換器４には除霜時に熱慣性が多く残っている為、短時間で除霜が完了出来るメリットもある。When the liquid temperature sensor 13 senses the temperature in the hot water storage tank 10 and reaches the target temperature, or when the temperature of the refrigerant high-pressure side temperature sensor 14 of the liquid heating heat exchanger 2 is lower than the liquid temperature sensor 13. The operation of the circulation pump 9 is turned off.
Further, when radiant heating such as floor heating is desired, the hot water storage tank 10 can be switched by moving the three-way valve 11 in the direction of the broken arrow so that the liquid flows into the radiant heating pipe 12 in order to flow hot water through the radiant heating pipe 12. It becomes the flow which bypasses and becomes radiant heating mode.
In winter heating operation and liquid heating operation, the air-side surface of the outdoor air heat exchanger 6 may freeze and require defrosting. However, in the defrosting mode, the four-way valve 3 is switched, and the broken line in the four-way valve 3 The refrigerant flows in the direction indicated by, the high-pressure and hot refrigerant passes through the interior of the outdoor heat exchanger 6 and melts frost and ice on the surface, the refrigerant is throttled by the flow control valve 5, and evaporated by the indoor heat exchanger 4, Return to the compressor via the 4-way valve. The refrigerant flow is the same as that in the cooling mode described below, but is greatly different in that both the indoor fan 7 and the outdoor fan 8 are off during defrosting. In the present invention, since a large amount of thermal inertia remains in the liquid heat exchanger 2 and the indoor air heat exchanger 4 during defrosting, there is also an advantage that defrosting can be completed in a short time.

図２で冷房モード時の機能について説明する。圧縮機１から吐出された冷媒は液体加熱用熱交換器２で液体を加熱した後、四方弁３内の破線で示す方向に流れ、室外側空気熱交換器６で冷却され流量制御弁５で絞られ、室内側空気熱交換器４で蒸発し、室内側ファン７で送風された室内空気を冷却し、冷房機能を発揮する。室内側空気熱交換器４を出た冷媒は前記四方弁３内の破線で示す方向に流れ、圧縮機１に戻る。
即ち、本発明では冷房時も液体加熱機能を発揮する。
圧縮機１の起動時、冷媒高圧側温度センサ１４の感知温度が液体温度センサ１３の感知温度より低い場合は循環ポンプ９をオフさせ、貯湯タンク９内の温めた液体の冷却を防止する。
室外側ファン８をオフすると冷媒の高圧は上がり、高温となり冷房をしながら加熱液体を更に高温にする事もできる。
加熱液体の液体回路については前記の暖房時の説明と同じの為、省略する。The functions in the cooling mode will be described with reference to FIG. The refrigerant discharged from the compressor 1 heats the liquid by the liquid heating heat exchanger 2, then flows in the direction indicated by the broken line in the four-way valve 3, is cooled by the outdoor air heat exchanger 6, and is cooled by the flow control valve 5. The indoor air that has been squeezed and evaporated in the indoor air heat exchanger 4 and blown by the indoor fan 7 is cooled, and the cooling function is exhibited. The refrigerant exiting the indoor air heat exchanger 4 flows in the direction indicated by the broken line in the four-way valve 3 and returns to the compressor 1.
That is, in the present invention, the liquid heating function is exhibited even during cooling.
When the compressor 1 is started, if the temperature detected by the refrigerant high-pressure side temperature sensor 14 is lower than the temperature detected by the liquid temperature sensor 13, the circulation pump 9 is turned off to prevent the warmed liquid in the hot water storage tank 9 from being cooled.
When the outdoor fan 8 is turned off, the high pressure of the refrigerant increases, and the heating liquid can be further heated while cooling.
Since the liquid circuit of the heating liquid is the same as the description at the time of heating, the description is omitted.

以上は本発明請求項１の図３に示された基本冷凍サイクルを用い、請求項３、および４も含めた本発明実施例の説明であるが、本発明請求項２の図４に示された基本冷凍サイクルの請求項３、および４を含めた実施例について、主に図４を用い、以下に簡単に説明する。
まず、液体加熱モードでは、圧縮機１を稼動すると高温の冷媒が液体加熱用熱交換器２の方向に流れ、液体回路の液体を加熱した後、四方弁３に流れ込み、四方弁３内を実線で示した方向に流れ、冷媒配管に沿って実線の矢印で示されるように流量制御弁５を通り冷媒は絞られて室外空気熱交換器６に流れ、外気から熱を吸収し、四方弁３内の実線で示した方向に流れ、室内側空気熱交換器４を経由し圧縮機１に戻り、これを繰り返す。液体加熱モードは冷媒が室内側空気熱交換器４を通る時、室内側ファン７はオフで冷風は出さない。
液体加熱の液体側の流れは前述の請求項１の基本冷凍サイクルを用いた実施例と同じ為、省略する。The above is an explanation of the embodiment of the present invention including the third and fourth aspects using the basic refrigeration cycle shown in FIG. 3 of the first aspect of the present invention, but is shown in FIG. 4 of the second aspect of the present invention. An embodiment including claims 3 and 4 of the basic refrigeration cycle will be briefly described below mainly using FIG.
First, in the liquid heating mode, when the compressor 1 is operated, a high-temperature refrigerant flows in the direction of the liquid heating heat exchanger 2, heats the liquid in the liquid circuit, and then flows into the four-way valve 3. The refrigerant flows through the flow control valve 5 along the refrigerant pipe and flows through the flow rate control valve 5 and flows to the outdoor air heat exchanger 6 to absorb heat from the outside air. It flows in the direction shown by the solid line inside, returns to the compressor 1 via the indoor air heat exchanger 4, and repeats this. In the liquid heating mode, when the refrigerant passes through the indoor air heat exchanger 4, the indoor fan 7 is off and no cold air is emitted.
Since the flow on the liquid side of the liquid heating is the same as that of the embodiment using the basic refrigeration cycle of the first aspect, the description is omitted.

冷房モードでは、図４の圧縮機１から吐出された冷媒は液体加熱用熱交換器２で液体を加熱した後、四方弁３内の破線で示す方向に流れ、室外側空気熱交換器６に入り、室外側ファン８で冷却され凝縮し、流量制御弁５で絞られた後、四方弁３内を破線方向に流れ、室内側熱交換器４で蒸発し、冷房機能を行い、圧縮機１に戻る。
即ち、本発明の請求項２を用いた冷凍サイクルでも、冷房時も液体加熱機能を発揮する。冷房モード時の液体側の流れについては液体加熱モードと同じ為説明を省略する。In the cooling mode, the refrigerant discharged from the compressor 1 in FIG. 4 heats the liquid in the liquid heating heat exchanger 2 and then flows in the direction indicated by the broken line in the four-way valve 3, and enters the outdoor air heat exchanger 6. Enters, cools and condenses by the outdoor fan 8, and is throttled by the flow control valve 5, flows in the direction of the broken line through the four-way valve 3, evaporates in the indoor heat exchanger 4, performs the cooling function, and the compressor 1 Return to.
That is, even in the refrigeration cycle using claim 2 of the present invention, the liquid heating function is exhibited even during cooling. Since the flow on the liquid side in the cooling mode is the same as that in the liquid heating mode, the description thereof is omitted.

本発明の請求項２の冷凍サイクルを用いた場合、室内側空気熱交換器４を使用した温風暖房は不可能となるため、暖房モードとしては輻射暖房用配管１２に加熱液体を通した輻射暖房のみとなる。すなわち冷凍サイクルは液体加熱モードで液体回路は３方弁の切替により貯湯タンク１０側に行かずに、輻射暖房配管１２側に行くようにするのは請求項１の冷凍サイクルを用いた［００１３］で説明した輻射暖房用配管１２に加熱液体を流す場合と同じである。When the refrigeration cycle according to claim 2 of the present invention is used, warm air heating using the indoor air heat exchanger 4 becomes impossible, and therefore, as a heating mode, radiation through which heated liquid is passed through the radiation heating pipe 12 Only heating. That is, the refrigeration cycle is in the liquid heating mode, and the liquid circuit does not go to the hot water storage tank 10 side by switching the three-way valve, but goes to the radiant heating pipe 12 side, using the refrigeration cycle of claim 1 [0013] This is the same as the case where the heating liquid is caused to flow through the radiation heating pipe 12 described above.

冬季液体加熱モード運転をすると除霜の必要が生じるが、除霜モード時、四方弁３は切り替わり、液体加熱用熱交換器２から四方弁３を経由し、室外側空気熱交換器６に流れ除霜し、流量制御弁５で絞られ、４方弁３を経由して室外側空気熱交換器４を液溜器として利用し、圧縮機１へ戻る。除霜時は室内ファン７、および室外ファン８はオフ状態である。In the winter liquid heating mode operation, defrosting is required, but in the defrosting mode, the four-way valve 3 is switched and flows from the liquid heating heat exchanger 2 to the outdoor air heat exchanger 6 via the four-way valve 3. It defrosts, is throttled by the flow control valve 5, uses the outdoor air heat exchanger 4 as a liquid reservoir via the four-way valve 3, and returns to the compressor 1. At the time of defrosting, the indoor fan 7 and the outdoor fan 8 are off.

産業上の利用の可能性Industrial applicability

自明ゆえ説明は省略Explanation is omitted because it is self-evident

本発明に関わるヒートポンプ液体加熱エアコンに用いられる冷凍サイクルと加熱液体循環回路を示し、暖房時の冷媒、加熱液体の流れを示す図The figure which shows the refrigerating cycle and heating liquid circulation circuit which are used for the heat pump liquid heating air-conditioner in connection with this invention, and shows the flow of the refrigerant | coolant at the time of heating, and heating liquid 本発明に関わるヒートポンプ液体加熱エアコンに用いられる冷凍サイクルと加熱液体循環回路を示し、冷房時の冷媒、加熱液体の流れを示す図The figure which shows the refrigerating cycle and heating liquid circulation circuit which are used for the heat pump liquid heating air conditioner concerning this invention, and shows the flow of the refrigerant | coolant at the time of cooling, and a heating liquid 本発明ヒートポンプ液体加熱エアコンの基本回路を示す図The figure which shows the basic circuit of this invention heat pump liquid heating air-conditioner 本発明ヒートポンプ液体加熱エアコンの基本回路と冷媒流れを示す図The figure which shows the basic circuit and refrigerant | coolant flow of this invention heat pump liquid heating air-conditioner 従来のヒートポンプ給湯エアコンの冷凍サイクル図例１Example 1 of refrigeration cycle of a conventional heat pump hot water supply air conditioner 従来のヒートポンプ給湯エアコンの冷凍サイクル図例２Example 2 of refrigeration cycle of conventional heat pump hot water supply air conditioner 従来のヒートポンプ給湯エアコンの冷凍サイクル図例３Example 3 of refrigeration cycle of a conventional heat pump hot water supply air conditioner

符号の説明Explanation of symbols

１．圧縮機
２．液体加熱用熱交換器
３．四方弁
４．室内側空気熱交換器
５．流量制御弁
６．室外側空気熱交換器
７．室内側ファン
８．室外側ファン
９．循環ポンプ
１０．貯湯タンク
１１．三方弁
１２．輻射暖房用配管
１３．液体温度センサ
１４．冷媒高圧側温度センサ
１５．液体配管
１６．貯湯タンク内熱交換器
１７．制御装置1. Compressor 2. 2. Heat exchanger for liquid heating Four-way valve4. 4. Indoor air heat exchanger 5. Flow control valve 6. Outdoor air heat exchanger Indoor fan 8 Outdoor fan 9. Circulation pump 10. Hot water storage tank 11. Three-way valve 12. Radiation heating piping13. Liquid temperature sensor 14. Refrigerant high pressure side temperature sensor 15. Liquid piping 16. Heat exchanger in hot water tank 17. Control device

Claims (4)

圧縮機、液体加熱用熱交換器、四方弁、室内側空気熱交換器、流量制御弁、室外側空気熱交換器、前記四方弁を冷媒配管により順次接続した冷凍サイクルと、液体加熱用熱交換器の液体循環回路側に循環ポンプを具備したことを特徴とするヒートポンプ液体加熱エアコン、および機器。Compressor, heat exchanger for liquid heating, four-way valve, indoor air heat exchanger, flow control valve, outdoor air heat exchanger, refrigeration cycle in which the four-way valve is connected sequentially by refrigerant piping, and heat exchange for liquid heating A heat pump liquid heating air conditioner and apparatus comprising a circulation pump on the liquid circulation circuit side of the vessel. 圧縮機、液体加熱用熱交換器、四方弁、流量制御弁、室外側空気熱交換器、前記四方弁、室内側空気熱交換器を冷媒配管により順次接続した冷凍サイクルと、液体加熱用熱交換器の液体循環回路側に循環ポンプを具備したことを特徴とするヒートポンプ液体加熱エアコン、および機器。Compressor, heat exchanger for liquid heating, four-way valve, flow control valve, outdoor air heat exchanger, refrigeration cycle in which the four-way valve and indoor air heat exchanger are sequentially connected by refrigerant piping, and heat exchange for liquid heating A heat pump liquid heating air conditioner and apparatus comprising a circulation pump on the liquid circulation circuit side of the vessel. 冷凍サイクルの高圧側冷媒温度と液体加熱用熱交換器に流れ込む液体温度との温度差に応じ、又は稼動指令により、前記液体加熱用熱交換器の液体を循環させる循環ポンプがオン、オフ、或いは稼動スピード変更する制御を有す請求項１又は２のヒートポンプ液体加熱エアコン、および機器。Depending on the temperature difference between the high-pressure side refrigerant temperature of the refrigeration cycle and the liquid temperature flowing into the liquid heating heat exchanger, or according to an operation command, a circulation pump for circulating the liquid in the liquid heating heat exchanger is turned on, off, or The heat pump liquid heating air conditioner and apparatus according to claim 1 or 2 having control for changing the operating speed. 液体加熱用熱交換器、貯湯タンク、循環ポンプがシリーズに繋がれた加熱液体回路に輻射暖房用配管を貯湯タンクと並列に配置し、貯湯と輻射暖房を切り替えられる回路を具備する請求項１又は２のヒートポンプ液体加熱エアコン、および機器。A heating liquid circuit in which a heat exchanger for liquid heating, a hot water storage tank, and a circulation pump are connected in series, and a pipe for radiant heating is arranged in parallel with the hot water storage tank, and a circuit capable of switching between hot water storage and radiant heating is provided. 2. Heat pump liquid heating air conditioner and equipment.
JP2006275793A 2006-07-06 2006-09-07 Heat pump liquid heating air conditioner or apparatus Pending JP2008032376A (en)

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