WO2018188514A1 - Climatiseur et procédé de commande de nettoyage - Google Patents

Climatiseur et procédé de commande de nettoyage Download PDF

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Publication number
WO2018188514A1
WO2018188514A1 PCT/CN2018/081940 CN2018081940W WO2018188514A1 WO 2018188514 A1 WO2018188514 A1 WO 2018188514A1 CN 2018081940 W CN2018081940 W CN 2018081940W WO 2018188514 A1 WO2018188514 A1 WO 2018188514A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
defrosting
heat exchanger
controlling
indoor heat
Prior art date
Application number
PCT/CN2018/081940
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English (en)
Chinese (zh)
Inventor
唐波
董志钢
Original Assignee
青岛海尔空调器有限总公司
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Application filed by 青岛海尔空调器有限总公司 filed Critical 青岛海尔空调器有限总公司
Publication of WO2018188514A1 publication Critical patent/WO2018188514A1/fr

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    • 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
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • 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
    • F24F11/84—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 valves

Definitions

  • This paper relates to the field of air conditioning self-cleaning technology, and in particular to an air conditioner and a cleaning control method.
  • the air in the indoor environment enters the interior of the indoor unit along the air inlet of the indoor unit, and is re-blowed into the indoor environment through the air outlet after the heat exchange piece is exchanged, During this process, impurities such as dust and large particles trapped in the indoor air will enter the indoor unit along with the airflow, although the dust filter installed at the air inlet of the indoor unit can filter most of the dust and particles. However, there will still be a small amount of tiny dust that cannot be completely blocked by filtration. With the long-term use of the air conditioner, the dust will gradually deposit on the surface of the heat exchange sheet, and the dust covering the outer surface of the heat exchanger is inferior in thermal conductivity. It will directly affect the heat exchange between the heat exchange sheet and the indoor air. Therefore, in order to ensure the heat exchange efficiency of the indoor unit, the indoor unit needs to be cleaned regularly.
  • the cleaning method of the indoor unit of the air conditioner in the prior art mainly includes two methods of manual cleaning and self-cleaning of the air conditioner.
  • the self-cleaning method of the air conditioner is that the air conditioner first operates in a cooling mode, and the indoor air exchange is increased. The amount of refrigerant output from the heat exchanger, so that the moisture in the indoor air can gradually condense into a frost or ice layer on the outer surface of the heat exchanger. In this process, the condensed frost layer can be combined with the dust to change the dust.
  • the outer surface of the heat exchanger is peeled off, and then the air conditioner operates in the heating mode, so that the frost layer condensed on the outer surface of the heat exchanger is melted, and the dust is collected into the water receiving tray along with the melted water flow, so that the air conditioner can be realized. Self-cleaning purpose of the device.
  • the condensation and defrosting respectively control the air conditioner to switch between the cooling and heating modes, and the switching of the flow direction of the refrigerant is controlled, and the switching process takes a long time and is delayed.
  • the overall progress of air conditioning self-cleaning is controlled.
  • an air conditioner comprising a refrigerant circulation line composed of an indoor heat exchanger, an outdoor heat exchanger, a compressor, and a four-way valve, and a defrosting refrigerant tube, wherein The first end of the defrosting refrigerant tube communicates with the compressor to transfer the refrigerant refrigerant line to the outdoor heat exchanger, and the second end communicates with the inlet of the indoor heat exchanger;
  • the air conditioner further includes a controller, and the controller is configured to: control the air conditioner to Self-cleaning mode operation, self-cleaning mode includes frosting stage and defrosting stage; in the frosting stage, control refrigerant flows into the indoor heat exchanger along the refrigerant circulation line to make the indoor heat exchanger frost; in the defrosting stage, control the refrigerant The defrosting refrigerant pipe flows into the indoor heat exchanger to make the room defrosting.
  • the air conditioner further has a throttle valve connected to the refrigerant circulation pipeline, and the throttle valve is located on the first refrigerant pipeline section between the outdoor heat exchanger and the indoor heat exchanger; the defrosting refrigerant pipe is provided with the first a control valve for conducting or blocking the defrosting refrigerant tube; controlling the flow of the refrigerant into the indoor heat exchanger along the refrigerant circulation line, comprising: controlling the opening of the throttle valve to make the first refrigerant pipeline section conductive; and controlling the first control The valve is closed to block the defrosting refrigerant tube.
  • controlling the refrigerant to flow into the indoor heat exchanger along the defrosting refrigerant tube comprises: controlling the throttle valve to close, blocking the first refrigerant pipeline section; and controlling the second control valve to open, so that the defrosting refrigerant tube is turned on.
  • a second control valve is disposed on the second refrigerant line section between the first end of the defrosting refrigerant tube and the refrigerant pipeline and the outdoor heat exchanger for conducting or blocking the second refrigerant pipeline section
  • the defrosting refrigerant tube is provided with a third control valve for conducting or blocking the defrosting refrigerant tube; controlling the refrigerant to flow into the indoor heat exchanger along the refrigerant circulation line, comprising: controlling the second control valve to open, so that the second The refrigerant pipe section is turned on; and the third control valve is controlled to be closed, so that the defrosting refrigerant pipe is blocked.
  • controlling the flow of the refrigerant along the defrosting refrigerant tube into the indoor heat exchanger comprises: controlling the second control valve to close, blocking the second refrigerant pipeline section; and controlling the third control valve to open, so that the defrosting refrigerant tube is turned on.
  • the first end of the defrosting refrigerant tube is connected to the exhaust line between the four-way valve and the exhaust port of the compressor.
  • the first end of the defrosting refrigerant tube is connected to the refrigerant line between the four-way valve and the outdoor heat exchanger.
  • a cleaning control method for an air conditioner comprising: controlling the air conditioner to operate in a self-cleaning mode, the self-cleaning mode including a frosting phase and a defrosting phase; and in the frosting phase, Control the refrigerant to flow into the indoor heat exchanger along the refrigerant circulation line to make the indoor heat exchanger frost; in the defrosting stage, control the refrigerant to flow into the indoor heat exchanger along the defrosting refrigerant tube, so that the indoor defrosting, the defrosting refrigerant tube One end communicates with the compressor to transfer the refrigerant to the outdoor heat exchanger, and the second end communicates with the inlet of the indoor heat exchanger.
  • the air conditioner further has a throttle valve connected to the refrigerant circulation pipeline, and the throttle valve is located on the first refrigerant pipeline section between the outdoor heat exchanger and the indoor heat exchanger; the defrosting refrigerant pipe is provided with the first a control valve for conducting or blocking the defrosting refrigerant tube; controlling the flow of the refrigerant into the indoor heat exchanger along the refrigerant circulation line, comprising: controlling the opening of the throttle valve to make the first refrigerant pipeline section conductive; and controlling the first control The valve is closed to block the defrosting refrigerant tube; controlling the refrigerant to flow into the indoor heat exchanger along the defrosting refrigerant tube, comprising: controlling the throttle valve to close, blocking the first refrigerant pipeline section; and controlling the second control valve to open, so that the second control valve is opened
  • the defrosting refrigerant tube is turned on.
  • a second control valve is disposed on the second refrigerant line section between the first end of the defrosting refrigerant tube and the refrigerant pipeline and the outdoor heat exchanger for conducting or blocking the second refrigerant pipeline section
  • the defrosting refrigerant tube is provided with a third control valve for conducting or blocking the defrosting refrigerant tube; controlling the refrigerant to flow into the indoor heat exchanger along the refrigerant circulation line, comprising: controlling the second control valve to open, so that the second The refrigerant pipe section is turned on; and the third control valve is closed to block the defrosting refrigerant pipe; and the refrigerant is controlled to flow into the indoor heat exchanger along the defrosting refrigerant pipe, including: controlling the second control valve to close, so that the second refrigerant pipe section Blocking; and controlling the third control valve to open, so that the defrosting refrigerant tube is turned on.
  • a defrosting refrigerant tube is added in the original pipeline structure, and the high-temperature refrigerant can be directly flowed into the indoor unit along the defrosting refrigerant tube in the self-cleaning defrosting stage to perform the defrosting operation, without the air conditioner being cooled and heated.
  • the switching in the mode and the direction of the flow direction of the refrigerant in the original pipeline accelerate the progress of the defrosting stage of the air conditioner in the self-cleaning process, and reduce the overall time consumption of the self-cleaning of the air conditioner.
  • FIG. 1 is a schematic structural view 1 of an air conditioner of the present invention, according to an exemplary embodiment
  • FIG. 2 is a schematic structural view 2 of the air conditioner of the present invention, according to an exemplary embodiment
  • FIG. 3 is a schematic structural view 3 of the air conditioner of the present invention, according to an exemplary embodiment
  • FIG. 4 is a flow chart of a cleaning control method herein, according to an exemplary embodiment.
  • Throttle valve 51, first control valve; 52, second control valve; 53, third control valve; 54, fourth control valve; 55, fifth control valve;
  • defrosting refrigerant tube 61, the first end; 62, the second end;
  • the air conditioners in this paper mainly include indoor heat exchanger 1, outdoor heat exchanger 2, throttle valve 5, compressor 3, four-way valve 4 and defrosting pipelines, etc., for cooling or heating the indoor environment. And to achieve self-cleaning operation on the indoor unit.
  • the indoor heat exchanger 1, the outdoor heat exchanger 2, the throttle valve 5, the compressor 3 and the four-way valve 4 of the air conditioner constitute a conventional refrigerant circulation line of the air conditioning system to operate the cooling or heating mode in the air conditioner.
  • the refrigerant flows along different flow paths of the refrigerant circulation line, thereby achieving cooling or heating of the indoor environment.
  • the air conditioner is a split type air conditioner, including an indoor unit and an outdoor unit, wherein the indoor unit is disposed in an indoor environment for heat exchange with the indoor environment through the indoor heat exchanger 1, for example, in an air conditioner operating cooling mode
  • the indoor heat exchanger 1 absorbs the heat of the indoor environment, the effect of cooling and cooling the indoor environment is achieved; when the air conditioner operates in the heating mode, the indoor heat exchanger 1 releases heat to the indoor environment, thereby achieving heating to the indoor environment.
  • the effect of warming up is a split type air conditioner, including an indoor unit and an outdoor unit, wherein the indoor unit is disposed in an indoor environment for heat exchange with the indoor environment through the indoor heat exchanger 1, for example, in an air conditioner operating cooling mode
  • the outdoor unit is disposed in an outdoor environment and is used for heat exchange with the indoor environment through the outdoor heat exchanger 2.
  • the indoor heat exchanger 1 transfers the heat of the indoor environment absorbed by the indoor heat to the outdoor through the refrigerant.
  • the heat exchanger 2 emits heat to the outdoor environment through the outdoor heat exchanger 2, thereby discharging indoor heat to the outside;
  • the outdoor heat exchanger 2 absorbs heat from the outdoor environment, and the refrigerant passes through the refrigerant.
  • the heat absorbed by the heat is transferred to the indoor heat exchanger 1 and the heat is released to the indoor environment through the indoor heat exchanger 1, thereby realizing the transfer of heat from the outdoor environment to the indoor environment.
  • the throttle valve 5 is disposed on the refrigerant pipeline between the indoor heat exchanger 1 and the outdoor heat exchanger 2, and is used for throttling control of the refrigerant, so that the medium-temperature medium-pressure refrigerant in the refrigerant pipeline can be throttled to a low temperature and a low pressure.
  • the refrigerant increases the heat absorbed by the refrigerant in the heat exchanger to increase the heat exchange capacity of the heat exchanger. For example, in the air conditioning operation cooling mode, the medium temperature medium pressure refrigerant flows from the outdoor heat exchanger 2 to
  • the compressor 3 is used for a temperature-increasing and pressure-increasing compression operation of the refrigerant to increase the amount of heat exchange between the refrigerant in the indoor heat exchanger 1 and the indoor environment, and to improve the amount of heat exchange between the refrigerant and the outdoor environment in the outdoor heat exchanger 2. .
  • the four-way valve 4 is used to control the flow of the refrigerant in different flow directions by switching the self-valve position when the air conditioner operates in different modes.
  • the four-way valve 4 includes a valve chamber and a valve block disposed in the valve chamber, and a first interface 41, a second interface 42, a third interface 43, and a fourth interface 44 communicating with the valve cavity, wherein
  • the first interface 41 is in communication with the exhaust port of the compressor 3
  • the second interface 42 is in communication with the outdoor heat exchanger 2
  • the third interface 43 is in communication with the intake port of the compressor 3
  • the fourth interface 44 is indoors.
  • the heat exchangers 1 are in communication.
  • the valve block of the four-way valve 4 is movable between the first valve position and the second valve position in the valve chamber to realize the switching control of the flow direction of the refrigerant, specifically, when the valve block moves to the first valve position,
  • An interface 41 is in communication with the second interface 42 such that the refrigerant discharged from the exhaust port of the compressor 3 can flow along the refrigerant line to the outdoor heat exchanger 2, while the third interface 43 and the fourth interface 44 are connected. Thereby, the refrigerant after the heat exchange of the indoor heat exchanger 1 can be returned to the compressor 3 along the refrigerant line.
  • the first port 41 communicates with the fourth port 44, so that the refrigerant discharged from the exhaust port of the compressor 3 can flow along the refrigerant pipe to the indoor heat exchanger 1, and
  • the second interface 42 and the third interface 43 are in communication, so that the refrigerant after the heat exchange of the outdoor heat exchanger 2 can flow back to the compressor 3 along the refrigerant line.
  • the valve block that controls the four-way valve 4 is switched to the first valve position, and the refrigerant discharged from the compressor 3 flows along the cooling flow direction, and the refrigerant first exchanges heat with the outdoor environment in the outdoor heat exchanger 2 Then, the indoor heat exchanger 1 flows into the indoor environment for heat exchange.
  • valve block of the control four-way valve 4 is switched to the second valve position, and the refrigerant discharged from the compressor 3 flows along the heating flow direction, and the refrigerant first flows in the indoor heat exchanger 1 and the indoor environment. The heat exchange is performed, and then flows into the outdoor heat exchanger 2 to exchange heat with the outdoor environment.
  • the refrigerant of the air conditioner of the present invention can control the flow of the refrigerant along the defrosting refrigerant flow path in addition to the flow direction of the conventional refrigerant circulation line of the air conditioning system in the foregoing embodiment, in the defrosting stage of the self-cleaning of the air conditioner, the specific flow of the refrigerant along the defrosting refrigerant flow path,
  • the air conditioner further includes a defrosting refrigerant pipe 6, the first end 61 of the defrosting refrigerant pipe 6 communicates with the compressor 3 to transfer the refrigerant refrigerant line to the outdoor heat exchanger 2, and the second section 62 communicates with the indoor heat exchanger 1 import.
  • the high-temperature refrigerant discharged from the compressor 3 flows to the outdoor heat exchanger 2, and flows through the first end 61 of the defrosting refrigerant pipe 6.
  • Some or all of the high-temperature refrigerant flows into the defrosting refrigerant tube 6 through the first end 61, and flows into the indoor heat exchanger 1 from the second stage 62, thereby directly increasing the temperature of the indoor heat exchanger 1 by using the high-temperature refrigerant, so that the indoor heat exchanger
  • the condensed frost layer on the outer surface of 1 melts to serve the purpose of defrosting.
  • the air conditioner of the present invention is also provided with a controller for controlling the air conditioner to operate in a self-cleaning mode, the self-cleaning mode includes a frosting stage and a defrosting stage; In the stage, the refrigerant is controlled to flow into the indoor heat exchanger 1 along the refrigerant circulation line, so that the indoor heat exchanger 1 is frosted; in the defrosting stage, the controlled refrigerant flows into the indoor heat exchanger 1 along the defrosting refrigerant tube 6, so that the indoor defrosting is performed.
  • the air conditioner can control the flow direction of the refrigerant corresponding to the cooling mode in the cooling mode to cause the indoor heat exchanger 1 to be frosted; during the defrost stage, the air conditioner does not need to keep its operation mode switched from the cooling mode to the cooling mode.
  • the heating mode it is only necessary to control the flow of the refrigerant along the defrosting refrigerant tube 6, so that the defrosting operation of the indoor heat exchanger 1 can be realized, and the time consumption caused by the mode switching when the air conditioner operates in the self-cleaning mode is greatly reduced.
  • it also speeds up the defrosting process in the defrosting stage and improves the overall efficiency of the self-cleaning mode of the air conditioner.
  • the flow order of the refrigerant for defrosting the indoor heat exchanger 1 is sequentially: the exhaust port of the compressor 3 - the first end 61 Port-defrosting refrigerant tube 6-second section 62 port-indoor heat exchanger 1-compressor 3 suction port, the defrosted refrigerant continues to flow back to the compressor 3 along the refrigerant line, and is re-executed by the compressor 3 Compressed for continued defrosting of the indoor heat exchanger 1 or for subsequent heat exchange in other modes of air conditioning operation.
  • the indoor heat exchanger 1 and the outdoor heat exchanger 2 are connected by a first refrigerant line section 71, and the throttle valve 5 is disposed on the first refrigerant line section 71.
  • the throttle valve 5 is also used to control the conduction or blocking of the first refrigerant line section 71 by opening or closing the valve port.
  • the refrigerant when the throttle valve 5 is in the open state, the refrigerant can normally flow between the indoor heat exchanger 1 and the outdoor heat exchanger 2 along the refrigerant circulation line; and when the throttle valve 5 is in the closed state, Then, the refrigerant cannot flow between the indoor heat exchanger 1 and the outdoor heat exchanger 2.
  • a defrosting refrigerant tube 6 is also provided with a first control valve 51.
  • the first control valve 51 can be used to control the conduction or blocking of the defrosting refrigerant tube 6 by opening or closing the valve port.
  • the refrigerant can normally flow along the defrosting refrigerant pipe 6 to the indoor heat exchanger 1; and when the throttle valve 5 is in the closed state, the defrosting refrigerant pipe 6 is blocked. Then, the refrigerant cannot flow along the defrosting refrigerant pipe 6 to the indoor heat exchanger 1.
  • the controller controls the refrigerant to flow into the indoor heat exchanger 1 along the refrigerant circulation line.
  • the specific control process includes: controlling the throttle valve 5 to open, so that the first refrigerant pipeline section 71 leads In this way, the refrigerant can flow into the indoor heat exchanger 1 through the first refrigerant line section 71 and the throttle valve 5 after the outdoor heat exchanger 2 exchanges heat with the outdoor environment, and the low temperature and low pressure refrigerant can make the indoor heat exchanger 1
  • the surface is condensed with a frost layer to separate the dust by the condensed frost layer; and the first control valve 51 for controlling the defrosting refrigerant tube 6 is closed to block the defrosting refrigerant tube 6 to prevent the high-temperature refrigerant directly along the defrosting refrigerant
  • the tube 6 flows into the indoor unit, causing the problem that the high-temperature refrigerant and the low-temperature refrigerant mix in the frosting stage affect
  • the condensing completion condition is the running time of the frosting stage of the air conditioner, and is running.
  • the duration reaches the set duration of the frosting, it can be determined that the amount of frosting of the indoor heat exchanger 1 satisfies the requirement, or the thickness of the frost layer reaches the need to peel off the dust.
  • the air conditioner can be controlled to enter the defrosting stage.
  • the controller controls the refrigerant to flow into the indoor heat exchanger 1 along the defrosting refrigerant tube 6, and the specific control process includes: controlling the throttle valve 5 to be closed, so that A refrigerant line section 71 is blocked, so that the medium temperature refrigerant after heat exchange between the outdoor heat exchanger 2 and the outdoor environment cannot flow to the indoor heat exchanger 1 to avoid the influence of the medium temperature refrigerant on the defrosting rate of the indoor heat exchanger 1; And controlling the second control valve 52 to open, so that the defrosting refrigerant tube 6 is turned on, so that the high-temperature refrigerant without heat exchange can directly flow into the indoor heat exchanger 1 along the defrosting refrigerant tube 6 to rapidly improve the indoor heat exchanger. 1
  • the temperature of itself accelerates the melting of the condensed frost layer on the outer surface of the indoor heat exchanger 1, thereby increasing the defrosting rate.
  • the refrigerant circulation line is blocked at the throttle valve 5, in order to avoid the problem that the throttle valve 5 may be damaged due to a large pressure difference between the two sides of the throttle valve 5, the throttle valve 5 can also be opened with a small valve opening to maintain the pressure on both sides of the throttle valve 5 within a safe pressure difference range; at the same time, it can also avoid excessive flow of medium or low temperature refrigerant due to large valve opening degree.
  • the first end 61 of the defrosting refrigerant tube 6 is connected to the refrigerant line of the compressor 3 for transferring the refrigerant to the outdoor heat exchanger 2;
  • the second refrigerant pipe section 72 between the 61 and the outdoor heat exchanger 2 is provided with a second control valve 52.
  • the second control valve 52 can control the conduction or block of the second refrigerant pipe by opening or closing the valve port.
  • the section 72 so that when the second control valve 52 is in the open state, the high-temperature refrigerant discharged from the compressor 3 can normally flow into the outdoor heat exchanger 2 along the second refrigerant line section 72 of the refrigerant circulation line, and in the second control When the valve 52 is in the closed state, the high-temperature refrigerant discharged from the compressor 3 cannot flow into the outdoor heat exchanger 2 along the second refrigerant line section 72.
  • a third control valve 53 is disposed on the defrosting refrigerant tube 6, and the third control valve 53 can control the conduction or block of the defrosting refrigerant tube 6 by opening or closing the valve port;
  • the third control valve 53 is in the open state, the high-temperature refrigerant discharged from the compressor 3 can directly flow into the indoor heat exchanger 1 along the defrosting refrigerant pipe 6; and when the third control valve 53 is in the closed state, the compressor 3 The discharged high-temperature refrigerant cannot flow into the indoor heat exchanger 1 along the defrosting refrigerant pipe 6.
  • the controller controls the refrigerant to flow into the indoor heat exchanger 1 along the refrigerant circulation line.
  • the specific control process includes: controlling the second control valve 52 to open, so that the second refrigerant pipeline section 72 In this way, the refrigerant can flow into the indoor heat exchanger 1 through the throttle valve 5 after the outdoor heat exchanger 2 exchanges heat with the outdoor environment, and the low temperature and low pressure refrigerant can condense the frost layer on the outer surface of the indoor heat exchanger 1 to The detached dust layer is used to achieve the stripping of the dust; and the third control valve 53 is controlled to be closed to block the defrosting refrigerant tube 6 to prevent the high-temperature refrigerant from directly flowing into the indoor unit along the defrosting refrigerant tube 6, thereby causing the high-temperature refrigerant in the frosting stage. Mixing with low temperature refrigerant affects the problem of condensation efficiency.
  • the controller controls the refrigerant to flow into the indoor heat exchanger 1 along the defrosting refrigerant tube 6.
  • the specific control process includes: controlling the second control valve 52 to close, so that the second The refrigerant line section 72 is blocked, so that the high temperature discharged from the compressor 3 does not flow to the outdoor heat exchanger 2, thereby reducing the consumption of additional refrigerant caused by the heat exchange of the high temperature refrigerant in the outdoor unit during the defrosting stage; and controlling the opening of the third control valve 53
  • the defrosting refrigerant tube 6 is turned on, so that the high-temperature refrigerant without heat exchange can directly flow into the indoor heat exchanger 1 along the defrosting refrigerant tube 6, so as to rapidly increase the temperature of the indoor heat exchanger 1 and accelerate the indoor heat exchange.
  • the melting of the condensed ice layer on the outer surface of the device 1 increases the defrosting rate.
  • the specific parallel connection between the defrosting refrigerant pipe 6 and the refrigerant circulation line is:
  • the defrosting refrigerant pipe 6 is connected to the exhaust line between the first port 41 of the four-way valve 4 and the exhaust port of the compressor 3, so that the high-temperature refrigerant discharged from the exhaust port of the compressor 3 does not need to flow through four
  • the valve 4 can directly flow into the indoor heat exchanger 1 along the defrosting refrigerant pipe 6, reducing the length of the flow path of the refrigerant pipe for defrosting in the air conditioner and reducing the flow path loss.
  • the defrosting refrigerant tube 6 and the refrigerant circulation line are connected in parallel in such a manner that the first end 61 of the defrosting refrigerant tube 6 is connected to the second interface 42 of the four-way valve 4 and the outdoor heat exchanger. 2 between the refrigerant lines.
  • FIG. 4 is a cleaning control method of the air conditioner of the present invention, which can realize the frosting and defrosting operation when the air conditioner operates the self-cleaning mode without switching through the cooling and heating modes to accelerate the self-cleaning mode.
  • the process, specifically, the steps of the cleaning control method include: S101, controlling the air conditioner to operate in a self-cleaning mode, the self-cleaning mode includes a frosting phase and a defrosting phase; S102, in the frosting phase, controlling the refrigerant along the refrigerant circulation pipeline Flowing into the indoor heat exchanger to cause the indoor heat exchanger to be frosted; S103, in the defrosting stage, controlling the refrigerant to flow into the indoor heat exchanger along the defrosting refrigerant tube, so that the indoor defrosting, the first end of the defrosting refrigerant tube is connected to the compressor
  • the refrigerant pipe for conveying the refrigerant to the outdoor heat exchanger, and the second end is connected to the inlet of the indoor heat exchanger.
  • the structure of the refrigerant pipe of the air conditioner can refer to the structure of the air conditioner disclosed in the foregoing embodiments.
  • the air conditioner further has a throttle valve connected to the refrigerant circulation line, the throttle valve is located on the first refrigerant pipeline section between the outdoor heat exchanger and the indoor heat exchanger; and the defrosting refrigerant pipe is provided with the first a control valve for conducting or blocking the defrosting refrigerant tube; thus, the specific control flow of the control method is:
  • the air conditioner When the air conditioner reaches the self-cleaning condition or receives the self-cleaning command set by the user, the air conditioner is controlled to operate in a self-cleaning mode, and the self-cleaning mode includes a frosting phase and a defrosting phase.
  • controlling the refrigerant to flow into the indoor heat exchanger along the refrigerant circulation line specifically, controlling the throttle valve to open, so that the first refrigerant pipeline section is turned on; and controlling the first control valve to be closed, so that the defrosting refrigerant is turned on The tube is blocked.
  • step S202 the control throttle valve is opened to open the first refrigerant pipeline section, so that the refrigerant can flow into the indoor heat exchanger through the first refrigerant pipeline section and the throttle valve after the outdoor heat exchanger exchanges heat with the outdoor environment.
  • the low temperature and low pressure refrigerant can condense the frost layer on the outer surface of the indoor heat exchanger to separate the dust by using the condensed frost layer; and control the first control valve of the defrosting refrigerant tube 6 to close, so that the defrosting refrigerant tube resistance Breaking, avoiding the high-temperature refrigerant directly flowing into the indoor unit along the defrosting refrigerant tube 6, causing the problem that the high-temperature refrigerant and the low-temperature refrigerant mix in the frosting stage affect the condensation efficiency.
  • step S203 Determine whether the air conditioner satisfies the frosting completion condition. If yes, execute step S204. If not, continue the frosting phase.
  • the completion condition of the condensation is the operation time of the frosting stage of the air conditioner.
  • the operation time reaches the set condensation time, it can be determined that the condensation amount of the indoor heat exchanger satisfies the requirement, or the thickness of the frost layer reaches the requirement of peeling off the dust. .
  • the air conditioner can be controlled to enter the defrosting stage.
  • controlling the flow of the refrigerant along the defrosting refrigerant tube into the indoor heat exchanger comprises: controlling the throttle valve to close, blocking the first refrigerant pipeline section; and controlling the second control valve to open to make the defrosting refrigerant tube Turn on.
  • step S204 the control throttle valve is closed to block the first refrigerant pipeline section, so that the intermediate temperature refrigerant after heat exchange between the outdoor heat exchanger and the outdoor environment cannot flow to the indoor heat exchanger, thereby avoiding the medium temperature refrigerant to the indoor heat exchanger.
  • the temperature of the indoor heat exchanger itself accelerates the melting of the condensed frost layer on the outer surface of the indoor heat exchanger, thereby increasing the defrosting rate.
  • a second control valve is disposed on the second refrigerant line section between the first end of the defrosting refrigerant tube connected to the refrigerant line and the outdoor heat exchanger for conducting or blocking The second refrigerant pipe section is disconnected; a third control valve is disposed on the defrosting refrigerant pipe for turning on or blocking the defrosting refrigerant pipe; thus, the specific control flow of the control method is:
  • the air conditioner is controlled to operate in a self-cleaning mode when the air conditioner reaches a self-cleaning condition or receives a self-cleaning command set by a user, and the self-cleaning mode includes a frosting phase and a defrosting phase.
  • controlling the refrigerant to flow into the indoor heat exchanger along the refrigerant circulation line comprising: controlling the second control valve to open, so that the second refrigerant pipeline section is turned on; and controlling the third control valve to be closed to enable the defrosting refrigerant The tube is blocked.
  • step S302 the second control valve is controlled to be opened, so that the second refrigerant pipeline section is turned on, so that the refrigerant can flow into the indoor heat exchanger through the throttle valve after the outdoor heat exchanger exchanges heat with the outdoor environment, and the low temperature and low pressure refrigerant
  • the outer surface of the indoor heat exchanger can be condensed with a frost layer to utilize the condensed frost layer to achieve the stripping of the dust
  • step S303 Determine whether the air conditioner satisfies the frosting completion condition. If yes, execute step S304. If not, continue the frosting phase.
  • the completion condition of the condensation is the operation time of the frosting stage of the air conditioner.
  • the operation time reaches the set condensation time, it can be determined that the condensation amount of the indoor heat exchanger satisfies the requirement, or the thickness of the frost layer reaches the requirement of peeling off the dust. .
  • the air conditioner can be controlled to enter the defrosting stage.
  • controlling the flow of the refrigerant along the defrosting refrigerant tube into the indoor heat exchanger comprises: controlling the second control valve to close, blocking the second refrigerant pipeline section; and controlling the third control valve to open to enable the defrosting refrigerant The tube is turned on.
  • step S304 the second control valve is controlled to be opened, so that the second refrigerant pipeline section is turned on, so that the refrigerant can flow into the indoor heat exchanger through the throttle valve after the outdoor heat exchanger exchanges heat with the outdoor environment, and the low temperature and low pressure refrigerant
  • the outer surface of the indoor heat exchanger can be condensed with a frost layer to utilize the condensed frost layer to achieve the stripping of the dust
  • the third control valve is controlled to be closed, so that the defrosting refrigerant tube is blocked, and the high-temperature refrigerant is directly prevented from flowing along the defrosting refrigerant tube. 6 Flow into the indoor unit, causing the problem that the high-temperature refrigerant and the low-temperature refrigerant mix in the frosting stage affect the condensation efficiency.
  • FIG. 3 is a schematic diagram of an air conditioner structure of a biaxial flow double indoor heat exchanger according to an embodiment of the present invention.
  • the indoor unit includes two indoor heat exchangers connected in parallel, and each indoor heat exchanger has an independent shaft.
  • Flow fan, each group of indoor heat exchangers and their axial fans can be used for heat exchange and air supply operation in the indoor environment.
  • the second end 62 of the defrosting refrigerant tube 6 is divided into two branch ends in order to allow the high temperature refrigerant in the defrosting stage to flow into the two indoor heat exchangers.
  • one of the indoor heat exchangers is defined as the first indoor heat exchanger 11 and the other indoor heat exchanger is the second indoor heat exchanger 12.
  • the two indoor heat exchangers of the air conditioner of the present invention can sequentially perform the self-cleaning mode, for example, the first indoor heat exchanger. 11 first performing the step flow of the cleaning control method in the foregoing embodiment, and then performing the step flow of the cleaning control method in the foregoing embodiment by the second indoor heat exchanger 12; performing self-cleaning mode on the two indoor heat exchangers herein
  • the order is not limited.
  • the refrigerant flowing in the defrosting refrigerant pipe 6 on another indoor heat exchanger that does not perform the self-cleaning mode corresponds to two indoor heat exchangers.
  • Each of the branch end roads is provided with a control valve for controlling the conduction or blocking of the corresponding branch end roads.
  • the first indoor heat exchanger 11 corresponds to the fourth control valve 54 and the second indoor heat exchanger 12 corresponds to the fifth control valve 55.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne un climatiseur et un procédé de commande de nettoyage. Le climatiseur comprend une conduite de circulation de fluide frigorigène comportant un échangeur de chaleur intérieur (1), un échangeur de chaleur extérieur (2), un compresseur (3) et une soupape à quatre voies (4), et comprend un tube de fluide frigorigène de dégivrage (6). Une première extrémité du tube de fluide frigorigène de dégivrage (6) est en communication avec une conduite de fluide frigorigène du compresseur (3) afin de transporter un fluide frigorigène vers l'échangeur de chaleur extérieur (2), et une seconde extrémité du tube de fluide frigorigène de dégivrage (6) est en communication avec une entrée de l'échangeur de chaleur intérieur (1). L'agencement supplémentaire du tube de fluide frigorigène de dégivrage (6) permet l'écoulement direct d'un fluide frigorigène à haute température dans une unité intérieure le long du tube de fluide frigorigène de dégivrage pendant une étape de dégivrage de l'auto-nettoyage, afin d'effectuer une opération de dégivrage, et le climatiseur ne requiert pas la commutation entre un mode de réfrigération et un mode de chauffage et la direction d'écoulement du fluide frigorigène ne requiert pas la commutation dans une conduite d'origine, ce qui permet d'accélérer le déroulement de l'étape de dégivrage et de réduire le temps d'auto-nettoyage.
PCT/CN2018/081940 2017-04-10 2018-04-04 Climatiseur et procédé de commande de nettoyage WO2018188514A1 (fr)

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* Cited by examiner, † Cited by third party
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CN113669844A (zh) * 2021-08-30 2021-11-19 海信（广东）空调有限公司 空调器及其控制方法
CN114251807B (zh) * 2021-12-01 2023-04-11 海信（广东）空调有限公司 一种空调器的自清洁控制方法、空调器及计算机可读存储介质
CN114370692A (zh) * 2022-02-28 2022-04-19 海信（广东）空调有限公司 空调器及其控制方法
CN115183394A (zh) * 2022-07-25 2022-10-14 Tcl空调器(中山)有限公司 空调器以及空调器自清洁控制方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010178U (ja) * 1983-06-30 1985-01-24 株式会社東芝 空気調和装置
CN101957061A (zh) * 2010-11-03 2011-01-26 湖南利能科技股份有限公司 带经济器的准二级压缩超低温空气源热泵热水机
CN203464566U (zh) * 2013-09-13 2014-03-05 广东欧科空调制冷有限公司 一种改良的空气源热泵热水器的除霜装置
CN104848738A (zh) * 2015-04-22 2015-08-19 珠海格力电器股份有限公司 空调室内换热器的清洁方法及装置
CN106152413A (zh) * 2016-07-27 2016-11-23 青岛海尔空调器有限总公司 空调内外机清洗方法
CN106594976A (zh) * 2016-11-11 2017-04-26 青岛海尔空调器有限总公司 空调内外机清洗方法
CN107023954A (zh) * 2017-04-10 2017-08-08 青岛海尔空调器有限总公司 一种空调器及清洁控制方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010178U (ja) * 1983-06-30 1985-01-24 株式会社東芝 空気調和装置
CN101957061A (zh) * 2010-11-03 2011-01-26 湖南利能科技股份有限公司 带经济器的准二级压缩超低温空气源热泵热水机
CN203464566U (zh) * 2013-09-13 2014-03-05 广东欧科空调制冷有限公司 一种改良的空气源热泵热水器的除霜装置
CN104848738A (zh) * 2015-04-22 2015-08-19 珠海格力电器股份有限公司 空调室内换热器的清洁方法及装置
CN106152413A (zh) * 2016-07-27 2016-11-23 青岛海尔空调器有限总公司 空调内外机清洗方法
CN106594976A (zh) * 2016-11-11 2017-04-26 青岛海尔空调器有限总公司 空调内外机清洗方法
CN107023954A (zh) * 2017-04-10 2017-08-08 青岛海尔空调器有限总公司 一种空调器及清洁控制方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113531782A (zh) * 2021-07-09 2021-10-22 青岛海尔空调器有限总公司 室内换热器的管外自清洁控制方法

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