JP3772883B2 - Operation control method of heat pump device - Google Patents

Operation control method of heat pump device Download PDF

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JP3772883B2
JP3772883B2 JP2003389115A JP2003389115A JP3772883B2 JP 3772883 B2 JP3772883 B2 JP 3772883B2 JP 2003389115 A JP2003389115 A JP 2003389115A JP 2003389115 A JP2003389115 A JP 2003389115A JP 3772883 B2 JP3772883 B2 JP 3772883B2
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hot water
heat exchanger
water supply
compressor
valve opening
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JP2005147607A (en
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安司 渡部
義和 西原
淳 竹内
健二 白井
博 荒島
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明にかかる運転制御方法は、除霜運転前の圧縮機運転周波数及び膨張弁開度変更時の急激な圧力変動を緩和し、圧縮機の保護を実現し、特に臨界圧力以上まで加圧されるヒートポンプ給湯機や各種ヒートポンプ装置への利用として有用である。   The operation control method according to the present invention mitigates sudden pressure fluctuations at the time of changing the compressor operating frequency and expansion valve opening before the defrosting operation, realizes protection of the compressor, and is particularly pressurized above the critical pressure. It is useful as a heat pump water heater and various heat pump devices.

従来の技術として、図１１は、ヒートポンプシステムの除霜運転前の動作についてのフローチャートである。このシステムは、暖房運転中、除霜条件成立後、電気式膨張弁を全開にするものである（例えば特許文献１参照）。
特公平６−２１７２６号公報 As a prior art, FIG. 11 is a flowchart about the operation before the defrosting operation of the heat pump system. In this system, the electric expansion valve is fully opened after the defrosting condition is established during the heating operation (see, for example, Patent Document 1).
Japanese Patent Publication No. 6-21726

ところが、臨界圧力以上を加圧するシステムの場合、従来のシステムでは、除霜条件成立後に電気式膨張弁の全開、そして急激な開度変更は、圧縮機の吸入及び吐出圧力の急激な変動を伴うため、圧縮機メカ磨耗や圧縮機モータの脱調が発生し、ヒートポンプシステムとしての機能損失の要因となっている。   However, in the case of a system that pressurizes more than the critical pressure, in the conventional system, the full expansion of the electric expansion valve after the defrosting condition is established, and the sudden opening degree change is accompanied by rapid fluctuations in the suction and discharge pressures of the compressor. For this reason, compressor mechanical wear and compressor motor step-out occur, which is a cause of functional loss as a heat pump system.

上記課題を解決するために、請求項１記載の本発明のヒートポンプ装置の運転制御方法は、インバータ式圧縮機、給湯用熱交換器、減圧装置、熱源用熱交換器を冷媒配管により環状に接続して構成され、前記減圧装置の弁開度を調整できるヒートポンプサイクルと、給湯用の液体を蓄える貯湯槽と、前記貯湯槽内の液体が前記給湯装置を介し循環できる液体配管と、前記液体配管に貯湯槽内の液体を流通させるポンプと、前記インバータ式圧縮機の運転周波数、前記減圧装置の弁開度を制御するマイクロコンピュータとを備え、使用される冷媒が臨界圧力以上で運転されるＣＯ２であるとともに、前記熱源用熱交換器の除霜運転を行う前の除霜準備期間中に、前記インバータ式圧縮機の運転周波数が下降した場合には、前記インバータ式圧縮機から吐出された冷媒圧力の変化速度が０．２ＭＰａ／ｓｅｃ以下となるように、給湯運転最後の前記減圧装置の弁開度に所定量加算することを特徴としたものである。 In order to solve the above-mentioned problem, the operation control method of the heat pump device of the present invention according to claim 1 includes an inverter type compressor, a hot water supply heat exchanger, a decompression device, and a heat source heat exchanger connected in a ring shape by a refrigerant pipe. A heat pump cycle that can adjust the valve opening of the pressure reducing device, a hot water storage tank that stores liquid for hot water supply, a liquid pipe that allows the liquid in the hot water storage tank to circulate through the hot water supply apparatus, and the liquid pipe CO2 in which the liquid in the hot water tank is circulated, and a microcomputer that controls the operating frequency of the inverter compressor and the valve opening of the pressure reducing device, and the refrigerant used is operated at a critical pressure or higher. with it, during defrosting lead time before performing the defrosting operation of the heat exchanger for the heat source, if the operating frequency of the inverter compressor is lowered, the inverter type compressor As the rate of change of refrigerant pressure discharged from becomes less 0.2 MPa / sec, is obtained by said adding a predetermined amount to the valve opening degree of the hot water supply operation last of the pressure reducing device.

請求項２記載の本発明のヒートポンプ装置の運転制御方法は、インバータ式圧縮機、給湯用熱交換器、減圧装置、熱源用熱交換器を冷媒配管により環状に接続して構成され、前記減圧装置の弁開度を調整できるヒートポンプサイクルと、給湯用の液体を蓄える貯湯槽と、前記貯湯槽内の液体が前記給湯装置を介し循環できる液体配管と、前記液体配管に貯湯槽内の液体を流通させるポンプと、前記圧縮機から吐出させた冷媒の温度を検出する吐出温度温度検出手段と、前記熱源側熱交換器の除霜運転の要否を決定するために熱源側熱交換器の温度を検出する熱源側熱交換器温度検出手段と、前記インバータ式圧縮機の運転周波数、前記吐出温度検出手段からの出力値である吐出温度が所定の温度になるように前記減圧装置の弁開度を制御するマイクロコンピュータとを備え、前記熱源用熱交換器の除霜運転を行う前の除霜準備期間中に、前記インバータ式圧縮機の運転周波数が下降した場合には、給湯運転最後の前記減圧装置の弁開度を一定時間保持し、前記インバータ式圧縮機の運転周波数が同等または上昇した場合には、給湯運転最後の前記減圧装置の弁開度に所定量加算することを特徴とする。 The operation control method of the heat pump device of the present invention according to claim 2 is configured by connecting an inverter compressor, a hot water heat exchanger, a pressure reducing device, and a heat source heat exchanger in an annular shape by a refrigerant pipe, and the pressure reducing device. A heat pump cycle that can adjust the valve opening of the water, a hot water storage tank that stores liquid for hot water supply, a liquid pipe that allows the liquid in the hot water storage tank to circulate through the hot water supply device, and the liquid in the hot water tank circulates through the liquid pipe A discharge temperature detecting means for detecting the temperature of the refrigerant discharged from the compressor, and the temperature of the heat source side heat exchanger for determining whether or not the defrosting operation of the heat source side heat exchanger is necessary. a heat source-side heat exchanger temperature detection means for detecting the inverter operating frequency of the compressor, the valve opening before Symbol discharge temperature discharge temperature, which is the output value from the detecting means the decompressor to a predetermined temperature the control degrees Lee black and a computer, in the defrosting preparation period prior to the defrosting operation of the heat exchanger for the heat source, if the operating frequency of the inverter compressor is lowered, the hot water supply operation end of said vacuum The valve opening of the apparatus is held for a certain period of time, and when the operating frequency of the inverter compressor is equal or increased, a predetermined amount is added to the valve opening of the pressure reducing apparatus at the end of the hot water supply operation .

請求項３記載の本発明のヒートポンプ装置の運転制御方法は、前記熱源用熱交換器の除霜運転を行う前に、前記ポンプの回転数を一定時間保持させることを特徴とする。 According to a third aspect of the present invention, there is provided a method for controlling the operation of the heat pump apparatus, wherein the number of rotations of the pump is maintained for a predetermined time before the defrosting operation of the heat source heat exchanger .

本発明のヒートポンプ装置の運転制御は、圧縮機運転周波数及び膨張弁開度変更時の急激な圧力変動を緩和し、圧縮機のメカ磨耗等の保護及び圧縮機モータ脱調回避が可能となる。   Operation control of the heat pump device of the present invention can alleviate sudden pressure fluctuations when changing the compressor operating frequency and expansion valve opening, protect the compressor mechanical wear, etc., and avoid compressor motor step-out.

第１の発明は、インバータ式圧縮機、給湯用熱交換器、減圧装置、熱源用熱交換器を冷媒配管により環状に接続して構成され、前記減圧装置の弁開度を調整できるヒートポンプサイクルと、給湯用の液体を蓄える貯湯槽と、前記貯湯槽内の液体が前記給湯装置を介し循環できる液体配管と、前記液体配管に貯湯槽内の液体を流通させるポンプと、前記インバータ式圧縮機の運転周波数、前記減圧装置の弁開度を制御するマイクロコンピュータとを備え、使用される冷媒が臨界圧力以上で運転されるＣＯ２であるとともに、前記熱源用熱交換器の除霜運転を行う前の除霜準備期間中に、前記インバータ式圧縮機の運転周波数が下降した場合には、前記インバータ式圧縮機から吐出された冷媒圧力の変化速度が０．２ＭＰａ／ｓｅｃ以下となるように、給湯運転最後の前記減圧装置の弁開度に所定量加算することを特徴としたもので、給湯または暖房運転時の吐出圧力の上昇を防止することで設計圧力を超える運転回避や圧縮機モータ過電流を防ぐことが可能である。また、除霜運転前と除霜運転直後の急激な圧力変化により発生する圧縮機モータの脱調や圧縮機及び冷凍サイクル部品のストレスを防止長寿命化が可能となる。 A first invention comprises an inverter compressor, a hot water supply heat exchanger, a pressure reducing device, a heat source heat exchanger connected in an annular shape by a refrigerant pipe, and a heat pump cycle capable of adjusting the valve opening of the pressure reducing device, A hot water storage tank for storing a hot water supply liquid, a liquid pipe through which the liquid in the hot water storage tank can circulate through the hot water supply apparatus, a pump for circulating the liquid in the hot water storage tank through the liquid pipe, and the inverter compressor And a microcomputer that controls the operating frequency and the valve opening of the decompression device, and the refrigerant used is CO2 that is operated at a critical pressure or higher, and before the defrosting operation of the heat source heat exchanger. during defrosting preparation period, if the operating frequency of the inverter compressor is lowered, the rate of change of refrigerant pressure discharged from the inverter type compressor is less 0.2 MPa / sec In, which was characterized by adding a predetermined amount of the valve opening degree of the hot water supply operation last of the pressure reducing device, hot water supply or driving avoidance and compressor beyond design pressure by preventing an increase in the discharge pressure in the heating operation It is possible to prevent motor overcurrent. In addition, it is possible to prevent the compressor motor from stepping out due to a rapid pressure change before and after the defrosting operation, and to prevent stress of the compressor and the refrigeration cycle parts, thereby extending the life.

第２の発明は、インバータ式圧縮機、給湯用熱交換器、減圧装置、熱源用熱交換器を冷媒配管により環状に接続して構成され、前記減圧装置の弁開度を調整できるヒートポンプサイクルと、給湯用の液体を蓄える貯湯槽と、前記貯湯槽内の液体が前記給湯装置を介し循環できる液体配管と、前記液体配管に貯湯槽内の液体を流通させるポンプと、前記圧縮機から吐出させた冷媒の温度を検出する吐出温度温度検出手段と、前記熱源側熱交換器の除霜運転の要否を決定するために熱源側熱交換器の温度を検出する熱源側熱交換器温度検出手段と、前記インバータ式圧縮機の運転周波数、前記吐出温度検出手段からの出力値である吐出温度が所定の温度になるように前記減圧装置の弁開度を制御するマイクロコンピュータとを備え、前記熱源用熱交換器の除霜運転を行う前の除霜準備期間中に、前記インバータ式圧縮機の運転周波数が下降した場合には、給湯運転最後の前記減圧装置の弁開度を一定時間保持し、前記インバータ式圧縮機の運転周波数が同等または上昇した場合には、給湯運転最後の前記減圧装置の弁開度に所定量加算することにより、給湯または暖房運転時の吐出圧力の上昇を防止することで設計圧力を超える運転回避や圧縮機モータ過電流を防ぐことが可能である。 A second invention comprises an inverter compressor, a hot water heat exchanger, a pressure reducing device, and a heat source heat exchanger connected in an annular shape by a refrigerant pipe, and a heat pump cycle capable of adjusting the valve opening of the pressure reducing device, A hot water storage tank for storing hot water supply liquid, a liquid pipe through which the liquid in the hot water storage tank can circulate through the hot water supply apparatus, a pump for circulating the liquid in the hot water storage tank through the liquid pipe, and a discharge from the compressor. Discharge temperature detecting means for detecting the temperature of the refrigerant, and heat source side heat exchanger temperature detecting means for detecting the temperature of the heat source side heat exchanger in order to determine the necessity of defrosting operation of the heat source side heat exchanger When the operating frequency of the inverter compressor, and before Symbol discharge temperature control Gosuru microcomputers output value at which the discharge temperature is a valve opening degree of the decompression device to a predetermined temperature from the detection means comprising a heat for the heat source During defrosting preparation period prior to the defrosting operation of the exchanger, when the operation frequency of the inverter compressor is lowered, the valve opening degree of the hot water supply operation last of the pressure reducing device holds a predetermined time, the When the operating frequency of the inverter compressor is equal or increased, a predetermined amount is added to the valve opening of the pressure reducing device at the end of the hot water supply operation , thereby preventing an increase in discharge pressure during hot water supply or heating operation. It is possible to avoid operation exceeding the design pressure and compressor motor overcurrent.

第３の発明は、特に、第１または第２の発明の前記熱源用熱交換器の除霜運転を行う前に、前記ポンプの回転数を一定時間保持させることにより、前記貯湯槽に送る出湯温度を低下させず、更に給湯熱交換器の温度低下を抑制するため、蓄熱量が大きく除霜運転時間の短縮が可能である。 According to a third aspect of the present invention, in particular, before performing the defrosting operation of the heat exchanger for heat source according to the first or second aspect, the hot water sent to the hot water storage tank is maintained by maintaining the rotational speed of the pump for a certain time. Since the temperature is not lowered and the temperature drop of the hot water supply heat exchanger is further suppressed, the heat storage amount is large and the defrosting operation time can be shortened .

（実施の形態１）
図１及び図２は、第１の実施例におけるヒートポンプ装置と運転制御を示したものである。図１は、インバータ式圧縮機１１、給湯用熱交換器１２、減圧装置１３、熱源用熱交換器１４を冷媒配管１５により環状に接続して構成され、前記減圧装置１３の弁開度を調整できるヒートポンプサイクルと、給湯用の液体を蓄える貯湯槽１６と、前記貯湯槽内の液体が前記給湯装置を介し循環できる液体配管１８と、前記液体配管に貯湯槽内の液体を
流通させるポンプ１７と、前記圧縮機から吐出させた冷媒の温度を検出する温度検出手段３１と、前記熱源側熱交換器の除霜条件を検出する温度検出手段３２と、前記インバータ式圧縮機の運転周波数と、前記吐出温度検出手段が所定の温度になるように前記減圧装置の弁開度とを制御するマイクロコンピュータ３０で構成される。図２は、運転制御の全体構成図であり、前記減圧装置１３は、前記冷媒吐出温度検出手段３１を所望の温度に制御するため減圧装置制御手段３３により弁開度が制御される。また、前記除霜冷媒温度検出手段３２により前記減圧装置１３とインバータ圧縮機１１は、減圧装置制御手段３３及び圧縮機運転周波数制御手段３４により運転制御される。図３は、図１及び図２の動作を示すフローチャートであり、除霜運転前に前記インバータ式圧縮機１１の運転周波数が下降した場合には、前記減圧装置１３の弁開度を一定時間保持し、前記インバータ式圧縮機１１の運転周波数が同等または上昇した場合には、前記減圧装置１３の弁開度を開くものである。 (Embodiment 1)
1 and 2 show the heat pump device and the operation control in the first embodiment. FIG. 1 shows an inverter type compressor 11, a hot water supply heat exchanger 12, a pressure reducing device 13, and a heat source heat exchanger 14 connected in a ring shape by a refrigerant pipe 15, and the valve opening of the pressure reducing device 13 is adjusted. Heat pump cycle, a hot water storage tank 16 for storing hot water supply liquid, a liquid pipe 18 through which the liquid in the hot water storage tank can circulate through the hot water supply apparatus, and a pump 17 for circulating the liquid in the hot water storage tank through the liquid pipe. The temperature detection means 31 for detecting the temperature of the refrigerant discharged from the compressor, the temperature detection means 32 for detecting the defrost condition of the heat source side heat exchanger, the operating frequency of the inverter compressor, The microcomputer 30 is configured to control the valve opening degree of the pressure reducing device so that the discharge temperature detecting means has a predetermined temperature. FIG. 2 is an overall configuration diagram of operation control. In the decompression device 13, the valve opening degree is controlled by the decompression device control means 33 in order to control the refrigerant discharge temperature detection means 31 to a desired temperature. Further, the decompression device 13 and the inverter compressor 11 are controlled by the decompression device control means 33 and the compressor operation frequency control means 34 by the defrosting refrigerant temperature detection means 32. FIG. 3 is a flowchart showing the operation of FIGS. 1 and 2, and when the operating frequency of the inverter compressor 11 decreases before the defrosting operation, the valve opening of the decompression device 13 is maintained for a certain period of time. When the operating frequency of the inverter type compressor 11 is equal or increased, the valve opening of the pressure reducing device 13 is opened.

次に、本実施例の作用を説明する。図４及び図５は、各運転モードにおける圧縮機及び減圧装置の動作と吐出冷媒温度及び吐出圧力の動作を従来技術と本実施例で比較した説明図である。これによれば、本実施例の運転制御は、図４より、除霜運転前に圧縮機運転周波数が下降する場合、給湯運転最後の減圧装置弁開度を保持するため、従来技術のような急激な圧力低下が発生しないため圧縮機モータの脱調を防止し、除霜運転への移行が可能となる。除霜運転前の圧縮機停止は、再び起動するために時間を要すると共に圧縮機熱容量が減少するため長時間の除霜運転が必要になり給湯効率が悪化すると共に、除霜の溶け残り発生により室外機基板への氷成長や異常音異常振動の発生要因となる。したがって、本実施例の運転制御は、除霜運転前に圧縮機運転周波数が同等または上昇する場合、給湯運転最後の減圧装置弁開度に所定量開度αを加算することにより、設計圧力を超過する吐出冷媒圧力上昇を防止し、圧縮機モータ過電流による圧縮機停止を防止できる。   Next, the operation of this embodiment will be described. 4 and 5 are explanatory diagrams comparing the operation of the compressor and the decompression device and the operation of the discharge refrigerant temperature and the discharge pressure in the respective operation modes in the conventional technique and the present embodiment. According to this, since the operation control of this embodiment maintains the decompression device valve opening degree at the end of the hot water supply operation when the compressor operation frequency is lowered before the defrost operation, the operation control of this embodiment is as in the prior art. Since a sudden pressure drop does not occur, the compressor motor is prevented from stepping out, and a transition to a defrosting operation is possible. Stopping the compressor before the defrosting operation takes time to start again and the heat capacity of the compressor is reduced, so a long-time defrosting operation is required and the hot water supply efficiency deteriorates. It becomes a cause of ice growth on the outdoor unit board and abnormal vibration. Therefore, when the compressor operating frequency is equal or increased before the defrosting operation, the operation control according to the present embodiment adds the predetermined opening degree α to the decompression valve opening degree at the end of the hot water supply operation, thereby reducing the design pressure. An excessive discharge refrigerant pressure rise can be prevented, and a compressor stop due to a compressor motor overcurrent can be prevented.

（実施の形態２）
図６及び図７は、第２の実施例におけるヒートポンプ装置の運転制御を示したものである。図６は、第２の実施例における運転制御の全体構成図であり、前記除霜冷媒温度検出手段３２により前記ポンプ１７は、ポンプ回転数制御手段３４により運転制御される。図７は、第２の実施例における動作を示すフローチャートであり、除霜運転を行う前に、給湯運転最後の前記ポンプ１７の回転数を一定時間保持させるものである。 (Embodiment 2)
6 and 7 show operation control of the heat pump apparatus in the second embodiment. FIG. 6 is an overall configuration diagram of the operation control in the second embodiment. The pump 17 is controlled by the pump rotation speed control means 34 by the defrosting refrigerant temperature detection means 32. FIG. 7 is a flowchart showing the operation in the second embodiment, in which the rotation speed of the pump 17 at the end of the hot water supply operation is held for a certain period of time before performing the defrosting operation.

次に、本実施例の作用について説明する。図８は、各運転モードにおけるポンプ、圧縮機及び減圧装置及びの動作と吐出冷媒温度及び吐出圧力の動作説明図である。これによれば、本実施例の運転制御は、除霜運転前にポンプ回転数４６を保持するため、前記貯湯槽１６に送る出湯温度を可能な限り低下させず、更に給湯熱交換器の温度低下を抑制するため、蓄熱量が大きく除霜運転時間の短縮が可能である。   Next, the operation of this embodiment will be described. FIG. 8 is an explanatory diagram of the operation of the pump, the compressor, and the pressure reducing device, and the discharge refrigerant temperature and discharge pressure in each operation mode. According to this, since the operation control of this embodiment maintains the pump rotational speed 46 before the defrosting operation, the temperature of the hot water supply heat exchanger is further reduced without reducing the hot water temperature sent to the hot water storage tank 16 as much as possible. In order to suppress the decrease, the heat storage amount is large and the defrosting operation time can be shortened.

（実施の形態３）
図９は、第３の実施例におけるヒートポンプ装置の運転制御動作を示すフローチャートである。これより、除霜運転前に前記インバータ式圧縮機１１の運転周波数が下降した場合には、前記圧縮機１１から吐出された冷媒圧力の変化速度が０．２ＭＰａ／ｓｅｃ以下となるように前記減圧装置１３の弁開度を所定量β開くものである。 (Embodiment 3)
FIG. 9 is a flowchart showing the operation control operation of the heat pump apparatus in the third embodiment. Thus, when the operating frequency of the inverter compressor 11 is lowered before the defrosting operation, the pressure reduction is performed so that the change rate of the refrigerant pressure discharged from the compressor 11 is 0.2 MPa / sec or less. The valve opening of the device 13 is opened by a predetermined amount β.

次に、本実施例における作用について説明する。図１０は、各運転モードにおける圧縮機及び減圧装置の動作と吐出冷媒温度及び吐出圧力の動作を第1の実施例と本実施例で比
較した説明図である。図１０より、使用する冷媒が臨界圧力以上を加圧するＣＯ２の場合、本施例の運転制御は、除霜運転前に圧縮機運転周波数が下降する場合、、前記圧縮機１１から吐出された冷媒圧力の変化速度が０．２ＭＰａ／ｓｅｃ以下となるように前記減圧装置１３の弁開度を所定量β開くことにより、除霜準備４１における圧縮機モータ脱調を
防止し、更に除霜運転直後の圧力変動を第１の実施例より少なくすることができるため、圧縮機や冷凍サイクル部品へのストレスを抑制し、部品寿命を延ばすことが可能となる。 Next, the operation of this embodiment will be described. FIG. 10 is an explanatory diagram comparing the operation of the compressor and the decompression device and the operation of the discharge refrigerant temperature and the discharge pressure in each operation mode in the first embodiment and the present embodiment. From FIG. 10, when the refrigerant to be used is CO2 that pressurizes above the critical pressure, the operation control of this example is the refrigerant discharged from the compressor 11 when the compressor operating frequency is lowered before the defrosting operation. By opening the valve opening of the pressure reducing device 13 by a predetermined amount β so that the pressure change rate is 0.2 MPa / sec or less, the compressor motor step-out in the defrost preparation 41 is prevented, and immediately after the defrost operation. Therefore, it is possible to reduce the stress on the compressor and the refrigeration cycle parts and extend the life of the parts.

本発明の実施の形態１におけるヒートポンプ装置の冷媒回路図FIG. 3 is a refrigerant circuit diagram of the heat pump device in Embodiment 1 of the present invention. 本発明の実施の形態１におけるヒートポンプ装置の運転制御全体構成図Overall configuration diagram of operation control of heat pump device in Embodiment 1 of the present invention 本発明の実施の形態１におけるヒートポンプ装置の運転制御フローチャートOperation control flowchart of heat pump device in Embodiment 1 of the present invention 本発明の実施の形態１における除霜運転前に圧縮機運転周波数が下降する場合の運転動作説明図Operational operation explanatory diagram when compressor operating frequency falls before defrosting operation in Embodiment 1 of the present invention 本発明の実施の形態１における除霜運転前に圧縮機運転周波数が同等または上昇する場合の運転動作説明図Operational explanatory diagram when compressor operating frequency is equal or increased before defrosting operation in Embodiment 1 of the present invention 本発明の実施の形態２におけるヒートポンプ装置の運転制御全体構成図Operation control overall configuration diagram of the heat pump device in Embodiment 2 of the present invention 本発明の実施の形態２におけるヒートポンプ装置の運転制御フローチャートOperation control flowchart of heat pump device in Embodiment 2 of the present invention 本発明の実施の形態２におけるヒートポンプ装置の運転動作説明図Explanatory drawing of operation | movement operation | movement of the heat pump apparatus in Embodiment 2 of this invention. 本発明の実施の形態３におけるヒートポンプ装置の運転制御フローチャートOperation control flowchart of heat pump device in Embodiment 3 of the present invention 本発明の実施の形態３におけるヒートポンプ装置の運転動作説明図Explanatory drawing of operation | movement operation | movement of the heat pump apparatus in Embodiment 3 of this invention. 従来の実施例におけるヒートポンプ装置の運転制御フローチャートOperation control flowchart of heat pump device in the conventional example

符号の説明Explanation of symbols

１１ 圧縮機
１２ 給湯熱交換器
１３ 減圧装置（電気式膨張弁）
１４ 熱源側熱交換器
１５ 冷媒配管
１６ 貯湯槽
１７ ポンプ（ウォータポンプ）
１８ 液体配管
１９ ファン
２０ ファンファンモータ
３０ マイクロコンピュータ
３１ 吐出冷媒温度検出手段
３２ 除霜冷媒温度検出手段
３３ 減圧装置制御手段
３４ 圧縮機運転周波数制御手段
３５ ポンプ回転数制御手段 11 Compressor 12 Hot-water supply heat exchanger 13 Pressure reducing device (electric expansion valve)
14 Heat source side heat exchanger 15 Refrigerant piping 16 Hot water storage tank 17 Pump (water pump)
DESCRIPTION OF SYMBOLS 18 Liquid piping 19 Fan 20 Fan fan motor 30 Microcomputer 31 Discharge refrigerant | coolant temperature detection means 32 Defrost refrigerant temperature detection means 33 Pressure-reducing-equipment control means 34 Compressor operation frequency control means 35 Pump rotation speed control means

Claims (3)

インバータ式圧縮機、給湯用熱交換器、減圧装置、熱源用熱交換器を冷媒配管により環状に接続して構成され、前記減圧装置の弁開度を調整できるヒートポンプサイクルと、給湯用の液体を蓄える貯湯槽と、前記貯湯槽内の液体が前記給湯装置を介し循環できる液体配管と、前記液体配管に貯湯槽内の液体を流通させるポンプと、前記インバータ式圧縮機の運転周波数、前記減圧装置の弁開度を制御するマイクロコンピュータとを備え、使用される冷媒が臨界圧力以上で運転されるＣＯ２であるとともに、前記熱源用熱交換器の除霜運転を行う前の除霜準備期間中に、前記インバータ式圧縮機の運転周波数が下降した場合には、前記インバータ式圧縮機から吐出された冷媒圧力の変化速度が０．２ＭＰａ／ｓｅｃ以下となるように、給湯運転最後の前記減圧装置の弁開度に所定量加算することを特徴としたヒートポンプ装置の運転制御方法。 An inverter compressor, a hot water supply heat exchanger, a pressure reducing device, and a heat source heat exchanger are connected in an annular shape by a refrigerant pipe, and a heat pump cycle capable of adjusting the valve opening of the pressure reducing device, and a liquid for hot water supply A hot water storage tank for storing, a liquid pipe capable of circulating the liquid in the hot water storage tank through the hot water supply device, a pump for circulating the liquid in the hot water storage tank through the liquid pipe, an operating frequency of the inverter compressor, and the pressure reducing device And a microcomputer for controlling the valve opening of the heat source, and the refrigerant used is CO2 operated at a critical pressure or higher, and during the defrost preparation period before performing the defrosting operation of the heat exchanger for heat source , when the operating frequency of the inverter compressor is lowered, as the rate of change of refrigerant pressure discharged from the inverter type compressor is less 0.2 MPa / sec, the hot water supply operation Operation control method of the heat pump apparatus characterized by adding a predetermined amount of the valve opening of the pressure reducing device after. インバータ式圧縮機、給湯用熱交換器、減圧装置、熱源用熱交換器を冷媒配管により環状に接続して構成され、前記減圧装置の弁開度を調整できるヒートポンプサイクルと、給湯用の液体を蓄える貯湯槽と、前記貯湯槽内の液体が前記給湯装置を介し循環できる液体配管と、前記液体配管に貯湯槽内の液体を流通させるポンプと、前記圧縮機から吐出させた冷媒の温度を検出する吐出温度温度検出手段と、前記熱源側熱交換器の除霜運転の要否を決定するために熱源側熱交換器の温度を検出する熱源側熱交換器温度検出手段と、前記インバータ式圧縮機の運転周波数、前記吐出温度検出手段からの出力値である吐出温度が所定の温度になるように前記減圧装置の弁開度を制御するマイクロコンピュータとを備え、前記熱源用熱交換器の除霜運転を行う前の除霜準備期間中に、前記インバータ式圧縮機の運転周波数が下降した場合には、給湯運転最後の前記減圧装置の弁開度を一定時間保持し、前記インバータ式圧縮機の運転周波数が同等または上昇した場合には、給湯運転最後の前記減圧装置の弁開度に所定量加算することを特徴としたヒートポンプ装置の運転制御方法。 An inverter compressor, a hot water supply heat exchanger, a pressure reducing device, and a heat source heat exchanger are connected in an annular shape by a refrigerant pipe, and a heat pump cycle capable of adjusting the valve opening of the pressure reducing device, and a liquid for hot water supply A hot water storage tank for storing, a liquid pipe through which the liquid in the hot water storage tank can circulate through the hot water supply device, a pump for circulating the liquid in the hot water tank through the liquid pipe, and a temperature of refrigerant discharged from the compressor Discharge temperature detecting means, heat source side heat exchanger temperature detecting means for detecting the temperature of the heat source side heat exchanger to determine whether the defrosting operation of the heat source side heat exchanger is necessary, and the inverter compression operating frequency of the machine, the discharge temperature is the output value from the previous SL discharge temperature detecting means and a micro-computer which control the valve opening degree of the decompression device to a predetermined temperature, for the heat source Defrosting heat exchanger During defrosting preparation period before performing, when the operation frequency of the inverter compressor is lowered, the valve opening degree of the hot water supply operation last of the pressure reducing device holds a predetermined time, the operation of the inverter compressor If the frequency is equal to or rises, the operation control method of the heat pump apparatus characterized by adding a predetermined amount of the valve opening degree of the hot water supply operation last of the pressure reducing device. 熱源用熱交換器の除霜運転を行う前に、ポンプの回転数を一定時間保持させることを特徴とする請求項１または２記載のヒートポンプ装置の運転制御方法。 Before performing the defrosting operation of the heat exchanger for heat source, operation control method of the heat pump apparatus according to claim 1 or 2, wherein the rotational speed of the pump is held a predetermined time.
JP2003389115A 2003-11-19 2003-11-19 Operation control method of heat pump device Expired - Fee Related JP3772883B2 (en)

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JP2007212103A (en) * 2006-02-13 2007-08-23 Matsushita Electric Ind Co Ltd Heat pump type hot water supply apparatus
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CN101430154B (en) * 2008-11-11 2010-06-09 深圳市协诚机电设备工程有限公司 Inverse defrosting method for air supply heat pump
JP5944873B2 (en) 2013-09-20 2016-07-05 新日鉄住金マテリアルズ株式会社 Method for evaluating internal stress of silicon carbide single crystal wafer and method for predicting warpage of silicon carbide single crystal wafer
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