JP7138162B2 - air conditioner - Google Patents

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JP7138162B2
JP7138162B2 JP2020511161A JP2020511161A JP7138162B2 JP 7138162 B2 JP7138162 B2 JP 7138162B2 JP 2020511161 A JP2020511161 A JP 2020511161A JP 2020511161 A JP2020511161 A JP 2020511161A JP 7138162 B2 JP7138162 B2 JP 7138162B2
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heat exchanger
indoor heat
outdoor
expansion valve
indoor
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JP2022508978A (en
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炳全 彭
根▲貴▼ ▲呂▼
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海信家電集団股▲ふん▼有限公司
海信(広東)空調有限公司
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Priority claimed from CN201911061213.4A external-priority patent/CN110686314A/en
Priority claimed from CN201921870650.6U external-priority patent/CN210980079U/en
Priority claimed from CN201911061927.5A external-priority patent/CN110686315A/en
Priority claimed from CN201921870642.1U external-priority patent/CN210980078U/en
Application filed by 海信家電集団股▲ふん▼有限公司, 海信(広東)空調有限公司 filed Critical 海信家電集団股▲ふん▼有限公司
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41Defrosting; Preventing freezing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • F24F11/67Switching between heating and cooling modes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28GCLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G13/00Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Description

本開示は、2019年11月1日に出願された出願番号が201911061927.5で、発明の名称が「空調機」である中国特許出願を基礎とする優先権と、2019年11月1日に出願された出願番号が201921870642.1で、発明の名称が「空調機」である中国特許出願を基礎とする優先権と、2019年11月1日に出願された出願番号が201911061213.4、発明の名称が「空調機」である中国特許出願を基礎とする優先権と;2019年11月1日に出願された出願番号が201921870650.6で、発明の名称が「空調機」である中国特許出願を基礎とする優先権とを主張し、その開示内容の全ては参照により本開示に組み込まれる。 This disclosure is based on priority from a Chinese patent application with application number 201911061927.5 and titled "air conditioner" filed on November 1, 2019 and Priority based on a Chinese patent application filed on November 1, 2019 with application number 201911061213.4 and the invention titled "air conditioner" with application number 201921870642.1, invention the priority based on the Chinese patent application titled "Air Conditioner"; and the Chinese Patent entitled "Air Conditioner" with application number 201921870650.6 filed on November 1, 2019 This application claims priority from an application, the disclosure of which is hereby incorporated by reference in its entirety.

本出願は、空調機技術の分野に関し、特に空調機に関するものである。 The present application relates to the field of air conditioner technology, and in particular to air conditioners.

空調機は、長期放置や使用した後、熱交換器の表面にある程度の塵埃が付着されるようになり、これらの塵埃は熱交換器の熱交換効率を低下させ、空調機の性能低下やエネルギー消費の増大を招く。従来の空調機の主な洗浄方法は、冷房運転で室内機コイルの表面を凍結して氷層を形成させ、冷房運転から暖房運転に切り替えることにより氷層を融解させて凝縮水を形成し、この凝縮水がファンからの送風によって熱交換器の表面の塵埃を取り除き、空調機の洗浄効果を得ているが、既存の空気機では、洗浄運転の実行時に、その表面の氷層の融解速度が速すぎるが故に、融解して生じた凝縮水の量が少なく、室内熱交換器の表面の塵埃に対する洗浄性能が低いという問題があった。 After being left unused or used for a long period of time, a certain amount of dust will adhere to the surface of the heat exchanger. lead to increased consumption. The main cleaning method for conventional air conditioners is to freeze the surface of the indoor unit coil during cooling operation to form an ice layer, and switch from cooling operation to heating operation to melt the ice layer and form condensed water. This condensed water removes dust on the surface of the heat exchanger by blowing air from the fan, and has a cleaning effect on the air conditioner. Since the heating is too fast, the amount of condensed water generated by melting is small, and there is a problem that the cleaning performance for dust on the surface of the indoor heat exchanger is low.

本発明の実施例は、従来技術に存する空調機洗浄効果が低いという問題を解決し、空調機を効果的に洗浄するための空調機及び空調機洗浄方法を提供する。 An embodiment of the present invention solves the problem of low air conditioner cleaning effect in the prior art, and provides an air conditioner and an air conditioner cleaning method for effectively cleaning the air conditioner.

上述した目的を達成するために、本出願の実施例は、以下のような技術案を採用する。 In order to achieve the above objects, the embodiments of the present application employ the following technical solutions.

本出願の実施例に係る空調機は、低圧冷媒を圧縮して高圧冷媒を生成するための圧縮機と;室内気流と室内熱交換器を流れる冷媒とを熱交換するための室内熱交換器と;室外気流と室外熱交換器を流れる冷媒とを熱交換するための室外熱交換器と;前記室内熱交換器と前記室外熱交換器との間に接続され、開度の大きさによって前記室内熱交換器及び前記室外熱交換器との間を流れる冷媒の圧力を調整する膨張弁と;少なくとも前記膨張弁の開度及び前記圧縮機の運転周波数を制御するために配置される室外制御部と;前記圧縮機、前記室外熱交換器、前記膨張弁、及び前記室内熱交換器が順次に接続されてなり、冷媒が循環する冷媒回路とを備え;前記室内熱交換器は、蒸発器として作動して前記室内熱交換器の表面に氷層を形成するように配置され、前記圧縮機は、前記室内熱交換器の表面に氷層を形成した後、所定の停止時間に応じて運転停止するように、前記室外制御部によって制御され;前記膨張弁は、前記圧縮機の運転停止時の開度と、前記室内熱交換器が前記蒸発器として運転する時の開度とが一定となるように、前記室外制御部によって制御される。 An air conditioner according to an embodiment of the present application includes a compressor for compressing a low-pressure refrigerant to generate a high-pressure refrigerant; and an indoor heat exchanger for exchanging heat between an indoor airflow and the refrigerant flowing through the indoor heat exchanger. an outdoor heat exchanger for exchanging heat between the outdoor air flow and the refrigerant flowing through the outdoor heat exchanger; connected between the indoor heat exchanger and the outdoor heat exchanger, and depending on the degree of opening, the indoor an expansion valve that adjusts the pressure of the refrigerant flowing between the heat exchanger and the outdoor heat exchanger; and an outdoor control unit arranged to control at least the opening degree of the expansion valve and the operating frequency of the compressor. a refrigerant circuit in which the compressor, the outdoor heat exchanger, the expansion valve, and the indoor heat exchanger are connected in sequence, and a refrigerant circulates; the indoor heat exchanger serves as an evaporator ; The compressor is arranged to operate to form an ice layer on the surface of the indoor heat exchanger, and the compressor stops operation according to a predetermined stop time after forming the ice layer on the surface of the indoor heat exchanger. The expansion valve is controlled by the outdoor control unit so that the opening degree when the compressor is stopped and the opening degree when the indoor heat exchanger operates as the evaporator are constant. , controlled by the outdoor control unit.

前記圧縮機は前記所定の停止時間を経過した後、前記室外制御部によって、運転が開始するように制御され、且つ、前記室内熱交換器は、凝縮器として運転して前記室内熱交換器の表面の氷層融解するように配置される。 After the predetermined stop time has elapsed, the compressor is controlled by the outdoor control unit to start operating, and the indoor heat exchanger operates as a condenser to operate the indoor heat exchanger. Arranged to melt the ice layer on the surface.

前記膨張弁は、前記室内熱交換器が前記凝縮器として運転して前記室内熱交換器の表面の氷層を融解する時の開度が、前記室内熱交換器が前記蒸発器として運転して前記室内熱交換器の表面に氷層を形成する時の開度よりも小さくなるように、前記室外制御部によって制御される。 The expansion valve has an opening degree when the indoor heat exchanger operates as the condenser to melt an ice layer on the surface of the indoor heat exchanger, and the indoor heat exchanger operates as the evaporator. It is controlled by the outdoor control section so as to be smaller than the degree of opening when an ice layer is formed on the surface of the indoor heat exchanger .

前記冷媒回路内には四方弁が接続され、前記四方弁は、前記室外制御部の制御下で、前記室内熱交換器が蒸発器又は凝縮器として運転するように前記冷媒回路中の冷媒の流れを切り替える。 A four-way valve is connected in the refrigerant circuit, and under the control of the outdoor control unit, the four-way valve causes the flow of refrigerant in the refrigerant circuit so that the indoor heat exchanger operates as an evaporator or a condenser. switch.

前記膨張弁は、前記圧縮機が運転停止となる前記所定の停止時間内で開度が一定となるように、前記室外制御部によって制御される。 The expansion valve is controlled by the outdoor controller so that the degree of opening of the expansion valve is constant within the predetermined stop time during which the operation of the compressor is stopped.

前記膨張弁は、前記室内熱交換器が前記凝縮器として運転して前記室内熱交換器の表面の氷層を融解する時に、開度が一定となるように、前記室外制御部によって制御される。 The expansion valve is controlled by the outdoor control unit so that the degree of opening is constant when the indoor heat exchanger operates as the condenser to melt the ice layer on the surface of the indoor heat exchanger. .

本出願の実施例に係る空調機において、室内熱交換器はその表面に氷層を形成するように、室外制御部によって、蒸発器として運転するように制御され、そして室内熱交換器の表面に氷層を形成した後、室内熱交換器は、凝縮器として運転して室内熱交換器の表面に形成された氷層を融解させるように制御され;膨張弁は、圧縮機が運転を停止する時の開度と、室内熱交換器が蒸発器として運転する時の開度とが一定となるように、室外制御部によって制御され、その結果、圧縮機の運転停止時の膨張弁の開度の増大により室内熱交換器内を冷媒が急速に流通して、室内熱交換器表面の氷層の融解速度が過大となることを回避することができ、膨張弁の開度が一定に維持されると、室内熱交換器の表面の氷層の融解速度を低下させ、氷層の融解により生じた凝縮水を室内熱交換器の表面にゆっくりと形成させることができ、こうして、凝縮水が室内熱交換器の表面に十分に接触してその表面に付着した塵埃を吸塵することが確保されると共に、凝縮水の量を増やして塵埃に対する洗浄力を増大させることもでき、これにより、室内熱交換器の表面の塵埃に対する凝縮水による洗浄効果を向上させ、従来の空調機に存する洗浄効果の低下を解決して、室内熱交換器の効果的な洗浄が実行できる。 In the air conditioner according to the embodiment of the present application, the indoor heat exchanger is controlled by the outdoor control unit to operate as an evaporator so as to form an ice layer on its surface, and After forming the ice layer, the indoor heat exchanger is controlled to operate as a condenser to melt the ice layer formed on the surface of the indoor heat exchanger; the expansion valve causes the compressor to stop running. is controlled by the outdoor control unit so that the opening when the indoor heat exchanger operates as an evaporator is constant, and as a result, the opening of the expansion valve when the compressor is stopped Refrigerant rapidly circulates in the indoor heat exchanger due to the increase of , it is possible to avoid excessive melting speed of the ice layer on the surface of the indoor heat exchanger, and the degree of opening of the expansion valve is kept constant. Then, the melting speed of the ice layer on the surface of the indoor heat exchanger can be reduced, and the condensed water generated by the melting of the ice layer can be slowly formed on the surface of the indoor heat exchanger, so that the condensed water can In addition to ensuring sufficient contact with the surface of the heat exchanger to absorb dust attached to the surface, the amount of condensed water can be increased to increase the cleaning power against dust, thereby improving the indoor heat. It is possible to improve the cleaning effect of condensed water on the dust on the surface of the heat exchanger, solve the deterioration of the cleaning effect existing in the conventional air conditioner, and effectively clean the indoor heat exchanger.

本出願の実施例に係る空調機の構造を示す図である。1 is a diagram showing the structure of an air conditioner according to an embodiment of the present application; FIG. 本出願の実施例に係る空調機のシステムを示す図である。1 is a diagram showing a system of an air conditioner according to an embodiment of the present application; FIG.

以下、図面を参照して本出願の実施例をさらに詳しく説明する。 Hereinafter, embodiments of the present application will be described in more detail with reference to the drawings.

図1及び図2に示すように、本出願の実施例に係る空調機は、室外機10と室内機20からなる分離型空調機であり、室外機10と室内機20は、配管を介して接続されて冷媒を搬送すると共に、データ接続線を介して接続されて通信情報を伝送する。 As shown in FIGS. 1 and 2, the air conditioner according to the embodiment of the present application is a separate air conditioner consisting of an outdoor unit 10 and an indoor unit 20. The outdoor unit 10 and the indoor unit 20 are connected via piping. It is connected to carry coolant and is connected to transmit communication information via a data connection line.

また、空気機は、室外機10と室内機20のほか、空気清浄手段、通風手段、加湿手段、除湿手段、ヒーター等を備えてもよい。これらの手段は、室外機10及び室内機20に結合された状態で一体的に制御され得る。 In addition to the outdoor unit 10 and the indoor unit 20, the air machine may include an air cleaner, a ventilator, a humidifier, a dehumidifier, a heater, and the like. These means can be integrally controlled while being connected to the outdoor unit 10 and the indoor unit 20 .

室外機10は、圧縮機11と、室外熱交換器12と、膨張弁13と、室外制御部14と、室外ファン15と、四方弁16とを含む。 The outdoor unit 10 includes a compressor 11 , an outdoor heat exchanger 12 , an expansion valve 13 , an outdoor controller 14 , an outdoor fan 15 and a four-way valve 16 .

圧縮機11は、低圧冷媒を圧縮して高圧冷媒とするために冷媒を圧縮するものである。 The compressor 11 compresses a low-pressure refrigerant into a high-pressure refrigerant.

室外熱交換器12は、室外気流と室外熱交換器12内を流れる冷媒とを熱交換させるものである。具体的には、室外熱交換器12は、空調機の冷房運転時に凝縮器として作動し、圧縮機11で圧縮された冷媒を室外熱交換器12内で凝縮させ;室外熱交換器12は、空調機の暖房運転時に蒸発器として作動し、減圧された冷媒を室外熱交換器12内で蒸発させる。 The outdoor heat exchanger 12 exchanges heat between the outdoor airflow and the refrigerant flowing through the outdoor heat exchanger 12 . Specifically, the outdoor heat exchanger 12 operates as a condenser during cooling operation of the air conditioner, and condenses the refrigerant compressed by the compressor 11 in the outdoor heat exchanger 12; It operates as an evaporator during the heating operation of the air conditioner, and evaporates the decompressed refrigerant in the outdoor heat exchanger 12 .

本出願の幾つかの実施例において、室外熱交換器12の冷却フィン(図示せず)は、室外空気と冷媒が通過する室外熱交換器12の冷媒配管(図示せず)との間の表面積を拡大して、室外空気と冷媒との間の熱交換効率を向上させるために用いられる。 In some embodiments of the present application, the cooling fins (not shown) of the outdoor heat exchanger 12 have a surface area between the outdoor air and the refrigerant pipes (not shown) of the outdoor heat exchanger 12 through which the refrigerant passes. is used to increase the heat exchange efficiency between the outdoor air and the refrigerant.

膨張弁13は、室内熱交換器21と室外熱交換器12との間に接続されており、膨張弁13の開度によって、室内熱交換器21と室外熱交換器12との間を流れる冷媒の圧力が調整されて、室内熱交換器21と室外熱交換器12との間を流れる冷媒流量が調整される。ここでは、室内熱交換器21と室外熱交換器12との間を流れる冷媒の流量値及び圧力値は、室内熱交換器21及び室外熱交換器12の熱交換性能に影響を及ぼす。膨張弁13は、電子弁であってもよく、膨張弁13を流れる冷媒の流量及び圧力を制御するため、膨張弁13の開度が調整可能となっている。 The expansion valve 13 is connected between the indoor heat exchanger 21 and the outdoor heat exchanger 12, and depending on the degree of opening of the expansion valve 13, refrigerant flows between the indoor heat exchanger 21 and the outdoor heat exchanger 12. is adjusted, and the flow rate of refrigerant flowing between the indoor heat exchanger 21 and the outdoor heat exchanger 12 is adjusted. Here, the flow rate value and pressure value of the refrigerant flowing between the indoor heat exchanger 21 and the outdoor heat exchanger 12 affect the heat exchange performance of the indoor heat exchanger 21 and the outdoor heat exchanger 12 . The expansion valve 13 may be an electronic valve, and the degree of opening of the expansion valve 13 is adjustable in order to control the flow rate and pressure of the refrigerant flowing through the expansion valve 13 .

室外制御部14は、膨張弁13の開度と圧縮機11の運転周波数を制御するように配置される。 The outdoor control unit 14 is arranged to control the opening degree of the expansion valve 13 and the operating frequency of the compressor 11 .

室外ファン15は、室外空気を室外吸込口から室外機10内に吸い込み、室外熱交換器12で熱交換した後に室外吹出口から送り出すためのものであり、室外ファン15によって、空気の流れに動力を与える。 The outdoor fan 15 is for sucking outdoor air into the outdoor unit 10 from the outdoor suction port, exchanging heat with the outdoor heat exchanger 12, and then sending it out from the outdoor outlet. give.

四方弁16は、冷媒回路に接続されており、室外制御部14の制御下で、室内機20が冷房運転又は暖房運転を実行するように、冷媒回路中の冷媒の流れを切り替える。 The four-way valve 16 is connected to the refrigerant circuit and switches the flow of refrigerant in the refrigerant circuit under the control of the outdoor controller 14 so that the indoor unit 20 performs cooling operation or heating operation.

冷媒回路は圧縮機11、室外熱交換器12、膨張弁13、及び室内熱交換器21が順次に接続されてなり、冷媒回路に冷媒を循環させて室内熱交換器21と室外熱交換器12とでそれぞれ空気と熱交換させて、室内機20の冷房運転又は暖房運転を実現する。 The refrigerant circuit comprises a compressor 11, an outdoor heat exchanger 12, an expansion valve 13, and an indoor heat exchanger 21, which are connected in sequence. and heat exchange with the air to realize the cooling operation or the heating operation of the indoor unit 20 .

室内機20は、室内熱交換器21と、室内ファン22と、室内制御部23とを含む。 Indoor unit 20 includes an indoor heat exchanger 21 , an indoor fan 22 , and an indoor controller 23 .

室内熱交換器21は、室内気流と室内熱交換器21内を流れる冷媒とを熱交換させるためのものである。 The indoor heat exchanger 21 is for exchanging heat between the indoor airflow and the refrigerant flowing through the indoor heat exchanger 21 .

室内ファン22は、室内空気を室内吸込口から室内機20内に吸い込み、室内熱交換器21で熱交換した後に室内吹出口から送り出すためのものであり、室内ファン22によって、空気の流れに動力を与える。 The indoor fan 22 is for sucking indoor air into the indoor unit 20 from the indoor air inlet, exchanging heat with the indoor heat exchanger 21, and then sending it out from the indoor air outlet. give.

室内制御部23は、室内ファン22の回転数を制御するように配置され、室内制御部23と室外制御部14とは、データ線を介して接続されて通信情報を伝送する。 The indoor controller 23 is arranged to control the rotation speed of the indoor fan 22, and the indoor controller 23 and the outdoor controller 14 are connected via a data line to transmit communication information.

室内熱交換器21の表面に付着した塵埃を洗浄するため、室内機20が冷房運転を実行し、圧縮機11が作動するように制御される。具体的には、四方弁16は、室外制御部14によって、室内機20が冷房運転で作動するように冷媒が冷媒回路内を所定の流れ方向で流れるように制御され、室内機20が冷房運転で作動する時、室内熱交換器21が蒸発器として作動するように配置され、空気中の水分子が室内熱交換器21の表面で凝縮し、室内熱交換器21の表面に結露してさらに氷層を形成する。 In order to clean the dust adhering to the surface of the indoor heat exchanger 21, the indoor unit 20 is controlled to perform the cooling operation and the compressor 11 is operated. Specifically, the four-way valve 16 is controlled by the outdoor control unit 14 so that the refrigerant flows in a predetermined flow direction in the refrigerant circuit so that the indoor unit 20 operates in the cooling operation. , the indoor heat exchanger 21 is arranged to operate as an evaporator, and water molecules in the air condense on the surface of the indoor heat exchanger 21, condense on the surface of the indoor heat exchanger 21, and further form an ice layer.

室内熱交換器21の表面に氷層が形成された後、室外制御部14は、所定の停止時間に従い、圧縮機11が運転停止するように制御して、圧縮機11が所定の停止時間で停止状態を維持させて、圧縮機11に対する室内機20の運転モード切換時の過電圧保護を実現する。一例として、圧縮機11の所定の停止時間は3分間である。 After the ice layer is formed on the surface of the indoor heat exchanger 21, the outdoor control unit 14 controls the operation of the compressor 11 to stop according to the predetermined stop time, and the compressor 11 is stopped at the predetermined stop time. By maintaining the stopped state, the overvoltage protection for the compressor 11 is realized when the operation mode of the indoor unit 20 is switched. As an example, the predetermined stop time of the compressor 11 is 3 minutes.

圧縮機11が所定の停止時間で停止状態を維持した後、室外制御部14によって圧縮機11が運転開始するように制御される。四方弁16は、室外制御部14によって、室内機20が暖房運転するように冷媒が冷媒回路内を所定の流れ方向で流れるように制御され、室内機20が暖房運転する時、室内熱交換器21が凝縮器として運転するように配置され、こうして、室内熱交換器21は凝縮器として運転するように配置されて、室内熱交換器21の表面に形成された氷層を融解させ、氷層が融解して生じた凝縮水は、氷層に含有された塵埃を洗浄すると共に、室内熱交換器21の表面に凝縮水が流れて室内熱交換器21の表面を洗浄することができ、室内熱交換器21の表面に対する洗浄が保証される。 After the compressor 11 maintains a stopped state for a predetermined stop time, the outdoor controller 14 controls the compressor 11 to start operating. The four-way valve 16 is controlled by the outdoor control unit 14 so that the refrigerant flows in a predetermined flow direction in the refrigerant circuit so that the indoor unit 20 performs heating operation. 21 is arranged to operate as a condenser, and thus the indoor heat exchanger 21 is arranged to operate as a condenser to melt the ice layer formed on the surface of the indoor heat exchanger 21 and remove the ice layer The condensed water generated by melting the ice layer cleans the dust contained in the ice layer, and the condensed water flows on the surface of the indoor heat exchanger 21 to clean the surface of the indoor heat exchanger 21. Cleaning of the surfaces of the heat exchanger 21 is guaranteed.

室内熱交換器21の表面の洗浄効果を向上させるため、本出願の実施例において、膨張弁13は室外制御部14によって、圧縮機11が運転停止となる所定の停止時間内の膨張弁13の開度と、室内熱交換器21が蒸発器として運転する時の膨張弁13の開度とが一定となるように、即ち、圧縮機11の運転停止時の膨張弁13の開度と、室内機20が冷房運転で氷層を形成するように運転する時の開度とが同じになるように、膨張弁13は室外制御部14によって制御される。一例として、圧縮機11の運転停止時の膨張弁13の開度は400°で、室内機20が冷房運転で氷層を形成するように運転する時の開度は400°である。 In order to improve the cleaning effect of the surface of the indoor heat exchanger 21, in the embodiment of the present application, the expansion valve 13 is controlled by the outdoor control unit 14 to operate the expansion valve 13 within a predetermined stop time when the compressor 11 is stopped. So that the opening degree and the opening degree of the expansion valve 13 when the indoor heat exchanger 21 operates as an evaporator are constant, that is, the opening degree of the expansion valve 13 when the operation of the compressor 11 is stopped and the opening degree of the indoor The expansion valve 13 is controlled by the outdoor controller 14 so that the degree of opening is the same as that when the machine 20 is operated to form an ice layer in the cooling operation. For example, the opening degree of the expansion valve 13 is 400° when the compressor 11 is stopped, and the opening degree is 400° when the indoor unit 20 operates to form an ice layer in the cooling operation.

膨張弁13の開度が、圧縮機11が運転停止となる所定の停止時間内に一定に維持されることにより、室内熱交換器21内を冷媒が急激に流れることが防止でき、流速の遅い冷媒が室内熱交換器21を通過する際に、室内熱交換器21の熱交換性能を低下させ、よって、室内熱交換器の表面の氷層融解速度を低下させて氷層融解により生じた凝縮水を室内熱交換器21の表面にゆっくりと形成させる。ゆっくりと融解して生じた凝縮水は室内熱交換器21の表面に十分に接触して、室内熱交換器21に付着した塵埃を吸塵し、洗い流すことができると共に、凝縮水の量を増やして熱交換器の表面の塵埃に対する流し洗いを強化することができ、室内熱交換器21の表面の洗浄性をさらに向上される。 By maintaining the degree of opening of the expansion valve 13 constant within a predetermined stop time when the operation of the compressor 11 is stopped, it is possible to prevent the refrigerant from rapidly flowing through the indoor heat exchanger 21, and the flow velocity is slow. When the refrigerant passes through the indoor heat exchanger 21, it reduces the heat exchange performance of the indoor heat exchanger 21, thereby reducing the melting speed of the ice layer on the surface of the indoor heat exchanger and causing condensation caused by the melting of the ice layer. Water is allowed to slowly form on the surface of the indoor heat exchanger 21 . The condensed water generated by slow melting comes into sufficient contact with the surface of the indoor heat exchanger 21, sucks up the dust adhering to the indoor heat exchanger 21, can be washed away, and increases the amount of condensed water. It is possible to enhance washing of the dust on the surface of the heat exchanger, and further improve the cleanability of the surface of the indoor heat exchanger 21 .

圧縮機11が所定の停止時間内に運転停止する目的は、室内機20冷房運転から暖房運転に切り替える前に圧縮機11を過電圧から保護することである。その後の暖房運転を速やかに開始するためには、室内機と室外機との間の圧力が過大になって圧縮機11の再起動と冷媒回路の安定化に影響を与えないように膨張弁13の開度を小さくするべきではないThe purpose of stopping the operation of the compressor 11 within the predetermined stop time is to protect the compressor 11 from overvoltage before switching the indoor unit 20 from cooling operation to heating operation. In order to quickly start the heating operation after that , the expansion valve should be set so that the pressure between the indoor unit and the outdoor unit does not become excessive and affect the restart of the compressor 11 and the stabilization of the refrigerant circuit. The opening of 13 should not be reduced .

室内熱交換器21の表面の洗浄効果を向上させるため、本出願の実施例において、膨張弁13は、室外制御部14によって、室内熱交換器21が凝縮器として運転する時の膨張弁13の開度が、室内熱交換器21が蒸発器として運転する時の膨張弁13の開度より小さくなるように、即ち、膨張弁13は室内機20が暖房運転で氷層を融解する運転を実行する時の開度が室内機20が冷房運転で氷層を形成する運転を実行する時の開度より小さくなるように制御される。一例として、膨張弁13は、室内機20が暖房運転で氷層を融解する運転を実行する時の開度が300°であり、室内機20が冷房運転で氷層を形成する運転を実行する時の開度は400°である。 In order to improve the cleaning effect of the surface of the indoor heat exchanger 21, in the embodiment of the present application, the expansion valve 13 is controlled by the outdoor control unit 14 to turn the expansion valve 13 on when the indoor heat exchanger 21 operates as a condenser. The opening is smaller than the opening of the expansion valve 13 when the indoor heat exchanger 21 operates as an evaporator. The degree of opening at this time is controlled to be smaller than the degree of opening at which the indoor unit 20 performs the operation of forming an ice layer in the cooling operation. As an example, the expansion valve 13 has an opening degree of 300° when the indoor unit 20 performs the operation of melting the ice layer in the heating operation, and the indoor unit 20 performs the operation of forming the ice layer in the cooling operation. The opening at the time is 400°.

なお、室内機20の暖房運転時の膨張弁13の開度を小さくして圧縮機11から出力される高圧冷媒を室内熱交換器21内にゆっくりと流入させることにより、流速の遅い冷媒が室内熱交換器21を流れる際に室内熱交換器21の熱交換性能を低下させ、よって、室内熱交換器の表面の氷層融解速度を低下させて氷層融解により生じた凝縮水を室内熱交換器21の表面にゆっくりと形成させることができ、ゆっくりと融解して生じた凝縮水が室内熱交換器21の表面に十分に接触し、室内熱交換器21に付着した塵埃を吸塵、流し洗うと共に、凝縮水の量を増やして熱交換器表面の塵埃に対する流し洗いを強化することができ、本願の一部の実施例では室内熱交換器21の表面に対する清掃性が向上された。 By reducing the degree of opening of the expansion valve 13 during the heating operation of the indoor unit 20 and allowing the high-pressure refrigerant output from the compressor 11 to slowly flow into the indoor heat exchanger 21, the refrigerant with a slow flow rate can be When flowing through the heat exchanger 21, the heat exchange performance of the indoor heat exchanger 21 is reduced, so that the speed of melting the ice layer on the surface of the indoor heat exchanger is reduced, and the condensed water generated by the melting of the ice layer is used for indoor heat exchange. It can be formed slowly on the surface of the heat exchanger 21, and the condensed water generated by slow melting sufficiently contacts the surface of the indoor heat exchanger 21, sucks the dust adhering to the indoor heat exchanger 21, and flushes it. At the same time, the amount of condensed water can be increased to enhance washing of dust on the surface of the heat exchanger.

冷媒回路中の冷媒の流れの安定化を確保し、熱交換システムの作動を安定化させるために、膨張弁13は、室外制御部14によって、圧縮機11が運転停止となる所定の運転停止時間内に開度が一定となるように制御され、よって圧縮機11の運転停止時に冷媒回路中の冷媒の流れの波動を防止できる。本出願のいくつかの実施例において、膨張弁13は、室外制御部14によって、室内熱交換器21が凝縮器として運転する時、開度が一定となるように制御され、室内機20が暖房運転する時の冷媒回路中の冷媒の流れの波動が防止でき、室内熱交換器21の表面の氷層の融解安定化と凝縮水の量の安定化が保証できる。 In order to stabilize the flow of refrigerant in the refrigerant circuit and stabilize the operation of the heat exchange system, the expansion valve 13 is controlled by the outdoor control unit 14 to stop the operation of the compressor 11 for a predetermined shutdown time. The opening is controlled so as to be constant within a short period of time, so that when the operation of the compressor 11 is stopped, fluctuations in the flow of refrigerant in the refrigerant circuit can be prevented. In some embodiments of the present application, the expansion valve 13 is controlled by the outdoor control unit 14 to have a constant opening when the indoor heat exchanger 21 operates as a condenser, and the indoor unit 20 is heated. During operation, the refrigerant flow in the refrigerant circuit can be prevented from undulating, and the melting and stabilization of the ice layer on the surface of the indoor heat exchanger 21 and the stabilization of the amount of condensed water can be guaranteed.

説明すべきなのは、上記の各手段(例えば、空気清浄手段、通風手段、加湿手段、除湿手段、ヒーター等)は、個別に設けられたプロセッサであってもよいし、コントローラのいずれかのプロセッサに集積されて実現されてもよいし、さらに、プログラムコードの形態でコントローラのメモリに記憶され、コントローラのいずれかのプロセッサにより上述の各手段の機能を呼び出して実行してもよい。ここで、プロセッサは、中央処理装置(Central Processing Unit、CPU)、又は、特定の集積回路(Application Specific Integrated Circuit、ASIC)であってもよく、又は本出願の実施例を実現するために構成された1つ又は複数の集積回路であってもよい。 It should be explained that each of the above means (e.g., air cleaning means, ventilation means, humidification means, dehumidification means, heaters, etc.) may be a separate processor or may be stored in any processor of the controller. It may be integrated and realized, or may be stored in the memory of the controller in the form of program code, and the functions of the above means may be called and executed by any processor of the controller. Here, the processor may be a central processing unit (CPU) or a specific integrated circuit (Application Specific Integrated Circuit, ASIC) or configured to implement the embodiments of the present application. It may also be one or more integrated circuits.

本出願の種々の実施例において、上述した各過程の順序番号の大小は、実行順序の前後を意味せず、各過程の実行順序は、その機能及び内部論理によって決定されるべきであり、本発明の実施例の実施過程に対して如何なる限定を意図しないと理解すべきである。 In the various embodiments of the present application, the order number of each process described above does not mean before or after the execution order, and the execution order of each process should be determined by its function and internal logic. It should be understood that no limitation is intended to the manner in which embodiments of the invention may be practiced.

本明細書に開示される実施例に記載の各例示的な手段及びアルゴリズムステップは、電子ハードウェア、又はコンピュータソフトウェアと電子ハードウェアの組合せで実現し得ることは、当業者であれば理解できるだろう。これらの機能がハードウェアで実行されるかソフトウェアで実行されるかは、技術案の特定適用や設計上の規制条件に依存する。当業者は、特定適用の各々に関して、記載の機能を実現するために異なる方法を用いることができるが、この実施は、本願の保護範囲から逸脱するものと考えられるべきではない。 Those skilled in the art will appreciate that each exemplary means and algorithm step described in the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. deaf. Whether these functions are performed in hardware or software depends on the particular application of the technical solution and the regulatory requirements of the design. Persons skilled in the art may use different methods to implement the described functionality for each specific application, but this implementation should not be considered as departing from the scope of protection of the present application.

当業者であれば明確に理解できるように、説明の便宜上及び簡潔さのために、上述のシステム、装置及び手段の具体的な作動過程は、前述の方法の実施例における対応過程を参照すればよく、ここではその説明を省略する。
なお、本出願に係る幾つかの実施例に開示されたシステム、装置及び方法は、他の方法でも実現されることが理解されるだろう。例えば、上述に記載の装置の実施例は単なる概略的なものであり、一例として、前記手段の区分は、論理的機能の区分のみであり、実際に実現される時は、別の区分方法があってもよく、例えば、複数の手段又は要素が、別のシステムに結合又は統合されてよく、又は幾つかの特徴が省略されてもよいし、又は実施しなくてもよい。別の点では、以上に表示又は検討された互いの結合、又は直接結合、又は通信接続は、幾つかの接続口を介して実現されてもよく、設備又は手段の間接結合又は通信接続は、電気的、機械的又は他の形態であってもよい。
As can be clearly understood by those skilled in the art, for convenience and brevity of explanation, the specific working steps of the above systems, devices and means can be referred to the corresponding steps in the above method embodiments. Well, we omit the explanation here.
It will be appreciated that the systems, devices and methods disclosed in some embodiments of the present application may be implemented in other ways as well. For example, the embodiments of the apparatus described above are only schematic, and as an example, the division of the means is only the division of logical functions, and when actually implemented, another division method may be used. There may be, for example, a plurality of means or elements may be combined or integrated into another system, or some features may be omitted or not implemented. In other respects, the couplings to each other or the direct couplings or communication connections indicated or discussed above may be realized through several ports, and the indirect couplings or communication connections of facilities or means are It may be electrical, mechanical or otherwise.

分離部材として説明される前記手段は、物理的に分離されるものであってもよいし、分離されないものであってもよいし、手段として示される部材は、物理的な手段であってもよいし、物理的な手段でなくてもよいし、即ち一箇所に位置してもよいし、複数のネットワーク手段に分布してもよい。本実施例の方案の目的は、実際の必要に応じて、手段の一部又は全部を選択して実現することができる。 The means described as separating members may or may not be physically separated, and the members indicated as means may be physical means. However, it need not be a physical means, i.e. it may be located in one place, or it may be distributed over a plurality of network means. The purpose of the scheme of the present embodiment can be achieved by selecting some or all of the means according to actual needs.

なお、本出願の各実施例における各機能手段は、1つの処理手段に統合されてもよいし、又は各手段は、物理的に個別で存在してもよく、又は2つ以上の手段が1つの手段に統合されてもよい。 It should be noted that each functional means in each embodiment of the present application may be integrated into one processing means, or each means may physically exist separately, or two or more means may may be integrated into one means.

10 室外機
11 圧縮機
12 室外熱交換器
13 膨張弁
14 室外制御部
15 室外ファン
16 四方弁
20 室内機
21 室内熱交換器
22 室内ファン
23 室内制御部
10 outdoor unit 11 compressor 12 outdoor heat exchanger 13 expansion valve 14 outdoor control unit 15 outdoor fan 16 four-way valve 20 indoor unit 21 indoor heat exchanger 22 indoor fan 23 indoor control unit

Claims (4)

低圧冷媒を圧縮して高圧冷媒を生成するための圧縮機と、
室内気流と室内熱交換器を流れる冷媒とを熱交換するための室内熱交換器と、
室外気流と室外熱交換器を流れる冷媒とを熱交換するための室外熱交換器と、
前記室内熱交換器と前記室外熱交換器との間に接続され、開度の大きさによって前記室内熱交換器及び前記室外熱交換器との間を流れる冷媒の圧力を調整する膨張弁と、
少なくとも前記膨張弁の開度及び前記圧縮機の運転周波数を制御するために配置される室外制御部と、
前記圧縮機、前記室外熱交換器、前記膨張弁、及び前記室内熱交換器が順次に接続されてなり、冷媒が循環する冷媒回路とを備え、
前記室内熱交換器は、蒸発器として作動して前記室内熱交換器の表面に氷層を形成するように配置され、前記圧縮機は、前記室内熱交換器の表面に氷層を形成した後、所定の停止時間に応じて運転停止するように、前記室外制御部によって制御され
前記圧縮機は、前記所定の停止時間を経過した後、前記室外制御部によって、運転が開始するように制御され、且つ、前記室内熱交換器は、凝縮器として運転して前記室内熱交換器の表面の氷層を融解するように配置され、
前記膨張弁は、前記圧縮機の運転停止時の開度と、前記室内熱交換器が前記蒸発器として運転する時の開度とが一定となるように、前記室外制御部によって制御され、
前記膨張弁は、前記室内熱交換器が前記凝縮器として運転して前記室内熱交換器の表面の氷層を融解する時の開度が、前記室内熱交換器が前記蒸発器として運転して前記室内熱交換器の表面に氷層を形成する時の開度より小さくなるように、前記室外制御部によって制御される、
とを特徴とする空調機。
a compressor for compressing low pressure refrigerant to produce high pressure refrigerant;
an indoor heat exchanger for exchanging heat between the indoor airflow and the refrigerant flowing through the indoor heat exchanger;
an outdoor heat exchanger for exchanging heat between the outdoor airflow and the refrigerant flowing through the outdoor heat exchanger;
an expansion valve connected between the indoor heat exchanger and the outdoor heat exchanger for adjusting the pressure of the refrigerant flowing between the indoor heat exchanger and the outdoor heat exchanger according to the degree of opening;
an outdoor control unit arranged to control at least the opening degree of the expansion valve and the operating frequency of the compressor;
a refrigerant circuit in which the compressor, the outdoor heat exchanger, the expansion valve, and the indoor heat exchanger are connected in sequence and a refrigerant circulates;
The indoor heat exchanger is arranged to operate as an evaporator to form an ice layer on the surface of the indoor heat exchanger, and the compressor forms the ice layer on the surface of the indoor heat exchanger. , controlled by the outdoor control unit so as to stop operation according to a predetermined stop time ,
After the predetermined stop time has elapsed, the compressor is controlled by the outdoor control unit to start operating, and the indoor heat exchanger operates as a condenser to operate as the indoor heat exchanger. arranged to melt the ice layer on the surface of
The expansion valve is controlled by the outdoor control unit so that the degree of opening when the compressor is stopped and the degree of opening when the indoor heat exchanger operates as the evaporator are constant ,
The expansion valve has an opening degree when the indoor heat exchanger operates as the condenser to melt an ice layer on the surface of the indoor heat exchanger and the indoor heat exchanger operates as the evaporator. controlled by the outdoor control unit so as to be smaller than the degree of opening when an ice layer is formed on the surface of the indoor heat exchanger;
An air conditioner characterized by:
前記冷媒回路内に接続され、前記室外制御部の制御下で、前記室内熱交換器が蒸発器又は凝縮器で運転するように前記冷媒回路中の冷媒の流れを切り替える四方弁を、さらに備えることを特徴とする請求項1に記載の空調機。 further comprising a four-way valve connected in the refrigerant circuit and switching a flow of refrigerant in the refrigerant circuit so that the indoor heat exchanger operates as an evaporator or a condenser under the control of the outdoor control unit. The air conditioner according to claim 1, characterized by: 前記膨張弁は、前記圧縮機が運転停止となる前記所定の停止時間内に開度が一定となるように、前記室外制御部によって制御される、ことを特徴とする請求項1に記載の空調機。 2. The air conditioning system according to claim 1, wherein the expansion valve is controlled by the outdoor controller so that the degree of opening of the expansion valve is constant within the predetermined stop time during which the compressor is stopped. machine. 前記膨張弁は、前記室内熱交換器が前記凝縮器として運転して前記室内熱交換器の表面の氷層を融解する時に、開度が一定となるように、前記室外制御部によって制御される、ことを特徴とする請求項に記載の空調機。 The expansion valve is controlled by the outdoor control unit so that the degree of opening is constant when the indoor heat exchanger operates as the condenser to melt the ice layer on the surface of the indoor heat exchanger. The air conditioner according to claim 1 , characterized by:
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CN201911061927.5A CN110686315A (en) 2019-11-01 2019-11-01 Air conditioner
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CN201921870642.1U CN210980078U (en) 2019-11-01 2019-11-01 Air conditioner
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