CN115507427A - Air conditioner indoor unit, air conditioner and control method of air conditioner - Google Patents

Air conditioner indoor unit, air conditioner and control method of air conditioner Download PDF

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Publication number
CN115507427A
CN115507427A CN202211271287.2A CN202211271287A CN115507427A CN 115507427 A CN115507427 A CN 115507427A CN 202211271287 A CN202211271287 A CN 202211271287A CN 115507427 A CN115507427 A CN 115507427A
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CN
China
Prior art keywords
air
bypass
air outlet
door
indoor
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Pending
Application number
CN202211271287.2A
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Chinese (zh)
Inventor
黄进猛
杨新国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong TCL Intelligent HVAC Equipment Co Ltd
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Guangdong TCL Intelligent HVAC Equipment Co Ltd
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Publication date
Application filed by Guangdong TCL Intelligent HVAC Equipment Co Ltd filed Critical Guangdong TCL Intelligent HVAC Equipment Co Ltd
Priority to CN202211271287.2A priority Critical patent/CN115507427A/en
Publication of CN115507427A publication Critical patent/CN115507427A/en
Pending legal-status Critical Current

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/009—Indoor units, e.g. fan coil units characterised by heating arrangements
    • F24F1/0093—Indoor units, e.g. fan coil units characterised by heating arrangements with additional radiant heat-discharging elements, e.g. electric heaters
    • 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
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • 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
    • F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/12—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of sliding members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F24F2013/1446—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with gearings

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

Abstract

The application provides an air conditioner indoor unit, an air conditioner and a control method of the air conditioner. The air conditioner indoor unit comprises a casing, an air door mechanism, an electric auxiliary heating device, an indoor heat exchanger and an indoor fan, wherein an air duct and a partition plate for dividing the air duct into a main air duct and a bypass air duct are arranged in the casing; the air door mechanism comprises an air outlet door assembly capable of opening and closing the air outlet, an air inlet door assembly capable of opening and closing the air inlet, a first bypass air door assembly capable of opening and closing the first bypass air opening and a second bypass air door assembly capable of opening and closing the second bypass air opening; the electric auxiliary heating device, the indoor heat exchanger and the indoor fan are sequentially arranged in the main air duct along the direction from the air outlet to the air inlet, and the indoor heat exchanger is positioned on the air outlet side of the indoor fan. When the air conditioner defrosts, the air outlet and the air inlet are closed, the first bypass air vent and the second bypass air vent are opened, and the electric auxiliary heat device and the indoor fan are started to carry out convection heat exchange on the indoor heat exchanger.

Description

Air conditioner indoor unit, air conditioner and control method of air conditioner
Technical Field
The application belongs to the technical field of air conditioners, and particularly relates to an air conditioner indoor unit, an air conditioner and a control method of the air conditioner indoor unit.
Background
In the heating operation process of the air conditioner, the outdoor heat exchanger is easy to frost at low temperature, and the heating capacity of the air conditioner is gradually reduced along with the thickening of a frost layer. In order to ensure the heating capacity of the air conditioner, the air conditioner needs to be switched into a cooling mode after the heating mode is operated for a period of time, and the outdoor heat exchanger is heated by exhausting high-temperature refrigerant so as to melt a frost layer, so that the heating capacity of the air conditioner is recovered.
In the defrosting process, the temperature of the indoor heat exchanger serving as an evaporator is reduced, and in order to avoid the indoor unit blowing cold air to a room, the conventional air conditioner generally closes a fan of the indoor unit during defrosting, but the heat exchange effect of the indoor heat exchanger is poor due to the fact that the fan is closed, so that the defrosting speed is low, and the defrosting time is long; because the indoor air can not be heated during defrosting, and the indoor heat can be brought to the outdoor, the indoor temperature is reduced due to the long defrosting time, and the comfort level of a user is reduced.
Disclosure of Invention
The embodiment of the application provides an air conditioner indoor unit, an air conditioner and a control method of the air conditioner indoor unit, and aims to solve the problems that an existing air conditioner is low in defrosting speed and long in defrosting time.
In a first aspect, an embodiment of the present application provides an indoor unit of an air conditioner, where the indoor unit of the air conditioner includes a casing, an air door mechanism, an electric auxiliary heating device, an indoor heat exchanger, and an indoor fan, where an air duct and a partition plate are disposed in the casing, the partition plate divides the air duct into a main air duct and a bypass air duct, the main air duct has an air outlet and an air inlet that are disposed on the casing, and a first bypass vent and a second bypass air outlet are disposed on the partition plate; the air door mechanism comprises an air outlet door assembly capable of opening and closing the air outlet, an air inlet door assembly capable of opening and closing the air inlet, a first bypass air door assembly capable of opening and closing the first bypass air vent and a second bypass air door assembly capable of opening and closing the second bypass air vent; the electric auxiliary heating device, the indoor heat exchanger and the indoor fan are sequentially arranged in the main air duct along the direction from the air outlet to the air inlet, and the indoor heat exchanger is positioned on the air outlet side of the indoor fan.
Optionally, the air outlet door assembly includes an air outlet door body and an air outlet driving member, the air outlet door body is rotatably connected to the casing, and an output end of the air outlet driving member is connected to the air outlet door body and can drive the air outlet door body to rotate so as to open and close the air outlet.
Optionally, the air outlet door body is arranged in the main air duct and located between the air outlet and the electric auxiliary heating device, and the middle of the air outlet door body is rotatably connected with the casing through an air outlet rotating shaft.
Optionally, the air inlet door subassembly includes the air inlet door body and air inlet driving piece, the air inlet door body with the casing rotates to be connected, the output of air inlet driving piece is connected the air inlet door body and can drive the air inlet door body rotates with the switching the air intake.
Optionally, the air inlet door body is arranged in the main air duct and located between the air inlet and the indoor fan, and the middle of the air inlet door body is rotatably connected with the casing through an air inlet rotating shaft.
Optionally, first bypass door subassembly includes the first bypass door body and first bypass driving piece, the first bypass door body with the baffle rotates to be connected, the output of first bypass driving piece is connected the first bypass door body and can drive the first bypass door body rotates with the switching first bypass vent.
Optionally, the second bypass air door assembly includes a second bypass door body and a second bypass driving member, the second bypass door body is rotatably connected to the partition plate, and an output end of the second bypass driving member is connected to the second bypass door body and can drive the second bypass door body to rotate so as to open and close the second bypass air inlet.
In a second aspect, an embodiment of the present application further provides an air conditioner, where the air conditioner includes the indoor unit of an air conditioner described in any one of the foregoing embodiments.
The embodiment of the application provides an indoor set of air conditioner and air conditioner, divide into main wind channel and bypass wind channel through the wind channel of baffle in with the casing, main wind channel has air outlet and the air intake of seting up on the casing, set up first bypass vent and second bypass wind gap on the baffle, set up air outlet door subassembly simultaneously, air inlet door subassembly, first bypass vent subassembly and second bypass air door subassembly, thereby when the defrosting mode is moved in the air conditioner operation, can close the air outlet through air outlet door subassembly, close the air intake through air inlet door subassembly, open first bypass vent through first bypass air door subassembly, open second bypass wind gap through second bypass air door subassembly, make heat transfer air current only at the wind channel internal circulation flow of indoor set of air conditioner, do not circulate with indoor environment, thereby can not cause the indoor temperature to descend.
In a third aspect, an embodiment of the present application further provides a control method of an air conditioner, which is applied to the air conditioner described above, where the air conditioner further includes an air conditioner outdoor unit, where the air conditioner outdoor unit includes an outdoor heat exchanger; the control method comprises the following steps: responding to a defrosting instruction, and controlling the air conditioner to operate in a defrosting mode; in the defrosting mode, the air outlet door assembly closes the air outlet, the air inlet door assembly closes the air inlet, the first bypass air door assembly opens the first bypass air opening, the second bypass air door assembly opens the second bypass air opening, the electric auxiliary heat device and the indoor fan are both in working states, the indoor heat exchanger is in an evaporation heat exchange state, and the outdoor heat exchanger is in a condensation heat exchange state.
Optionally, the control method further includes the following steps: responding to a heating instruction, and controlling the air conditioner to operate in a heating mode; in the heating mode, the air outlet door assembly opens the air outlet, the air inlet door assembly opens the air inlet, the first bypass air door assembly closes the first bypass air vent, the second bypass air door assembly closes the second bypass air vent, the electric auxiliary heat device and the indoor fan are both in an open state, the indoor heat exchanger is in a condensation heat exchange state, and the outdoor heat exchanger is in an evaporation heat exchange state.
Optionally, the control method further includes the following steps: responding to a refrigeration instruction, and controlling the air conditioner to operate in a refrigeration mode; in the refrigeration mode, the air outlet door assembly opens the air outlet, the air inlet door assembly opens the air inlet, the first bypass air door assembly closes the first bypass air vent, the second bypass air door assembly closes the second bypass air vent, the electric auxiliary heat device is in a closed state, the indoor fan is in an open state, the indoor heat exchanger is in an evaporation heat exchange state, and the outdoor heat exchanger is in a condensation heat exchange state.
The control method of the air conditioner provided by the embodiment of the application can control defrosting of the air conditioner, and can greatly enhance the heat exchange effect of the indoor heat exchanger by starting the electric auxiliary heating device and the indoor fan to carry out forced convection heat exchange on the indoor heat exchanger, so that the exhaust temperature and the exhaust pressure of a refrigerant entering the outdoor heat exchanger are greatly increased, defrosting of the outdoor heat exchanger is accelerated, and defrosting time is shortened; meanwhile, the forced convection heat transfer is carried out in an air flow channel separated from the indoor environment through closing the air outlet and the air inlet and opening the first bypass air opening and the second bypass air opening, so that the indoor temperature is not reduced, and the user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can also be derived from them without inventive effort.
For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.
Fig. 1 is a schematic structural view of an air conditioner indoor unit in defrosting of an air conditioner according to an embodiment of the present application.
Fig. 2 is a schematic structural view of an air conditioner indoor unit in heating of an air conditioner according to an embodiment of the present application.
Fig. 3 is a flowchart of a control method of an air conditioner according to an embodiment of the present disclosure.
Fig. 4 is a second flowchart of a control method of an air conditioner according to an embodiment of the present disclosure.
Fig. 5 is a third flowchart of a control method of an air conditioner according to an embodiment of the present application.
The reference numbers illustrate:
100. a housing; 101. a main air duct; 102. a bypass air duct; 103. an air outlet; 104. an air inlet; 200. a partition plate; 201. a first bypass vent; 202. a second bypass tuyere; 301. an air outlet door body; 302. an air inlet door body; 303. a first bypass door body; 304. a second bypass door body; 400. an electric auxiliary heating device; 500. an indoor heat exchanger; 600. indoor fan.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides an air conditioner indoor unit, as shown in fig. 1 and fig. 2, the air conditioner indoor unit provided by the embodiment of the application comprises a casing 100, an air door mechanism, an electric auxiliary heating device 400, an indoor heat exchanger 500 and an indoor fan 600, wherein an air duct and a partition plate 200 are arranged in the casing 100, the air duct is divided into a main air duct 101 and a bypass air duct 102 by the partition plate 200, the main air duct 101 is provided with an air outlet 103 and an air inlet 104 which are arranged on the casing 100, and a first bypass air vent 201 and a second bypass air vent 202 are arranged on the partition plate 200; the air door mechanism comprises an air outlet door assembly capable of opening and closing the air outlet 103, an air inlet door assembly capable of opening and closing the air inlet 104, a first bypass air door assembly capable of opening and closing the first bypass air opening 201 and a second bypass air door assembly capable of opening and closing the second bypass air opening 202; the electric auxiliary heat device 400, the indoor heat exchanger 500 and the indoor fan 600 are sequentially arranged in the main air duct 101 along the direction from the air outlet 103 to the air inlet 104, and the indoor heat exchanger 500 is located on the air outlet side of the indoor fan 600. Here, "open and close" means open and close.
The embodiment of the application provides an indoor unit of an air conditioner, the wind channel in casing 100 is divided into main wind channel 101 and bypass wind channel 102 through baffle 200, main wind channel 101 has air outlet 103 and air inlet 104 of seting up on casing 100, set up first bypass vent 201 and second bypass wind gap 202 on baffle 200, set up air outlet assembly simultaneously, air inlet assembly, first bypass vent assembly and second bypass air door subassembly, thereby when the air conditioner operation defrosting mode, can close air outlet 103 through air outlet assembly, close air inlet 104 through air inlet assembly, open first bypass vent 201 through first bypass vent assembly, open second bypass wind gap 202 through second bypass air door subassembly, make heat transfer air current only in the wind channel internal circulation flow of indoor unit of the air conditioner, do not circulate with the indoor environment, thereby can not cause the indoor temperature to descend.
Specifically, the electric auxiliary heating device 400, the indoor heat exchanger 500 and the indoor fan 600 are all arranged in the main air duct 101 and located between the air outlet 103 and the air inlet 104, wherein the electric auxiliary heating device 400 is arranged close to the air outlet 103, the indoor fan 600 is arranged close to the air inlet 104, the indoor heat exchanger 500 is arranged between the electric auxiliary heating device 400 and the indoor fan 600 and located on the air outlet side of the indoor fan 600, and air flow is blown to the indoor heat exchanger 500 and the electric auxiliary heating device 400 through the indoor fan 600.
In some embodiments of this application, air outlet door subassembly includes the air outlet door body 301 and air outlet driving piece, and the air outlet door body 301 rotates with casing 100 to be connected, and the output of air outlet driving piece is connected the air outlet door body 301 and can drive the rotation of the air outlet door body 301 with switching air outlet 103. The air outlet 103 can be opened or closed by driving the air outlet door body 301 to rotate through the air outlet driving part, so that the structure of the air outlet door assembly is simple, the movement of the air outlet door body 301 is conveniently controlled, and the air outlet driving part can be an indoor fan 600 or a rotary cylinder. Of course, in other embodiments, the air outlet door body 301 may be slidably connected to the casing 100, the output end of the air outlet driving member is connected to the air outlet door body 301 and can drive the air outlet door body 301 to slide, and the air outlet door body 301 can open and close the air outlet 103 by driving the air outlet driving member to drive the air outlet door body 301 to slide.
Optionally, the air outlet door body 301 is arranged in the main air duct 101 and located between the air outlet 103 and the electric auxiliary heating device 400, the middle of the air outlet door body 301 is rotatably connected with the casing 100 through an air outlet rotating shaft, so that the air outlet door body 301 can be prevented from occupying the outer space of the casing 100, the integral structure of the indoor unit of the air conditioner is more attractive, and meanwhile, the flowing distance of air flow inside the air duct during defrosting of the air conditioner can be shortened, so that the heat exchange efficiency of the indoor heat exchanger 500 is improved, the defrosting speed is increased, and the defrosting time is shortened.
In some embodiments of the present application, the intake door assembly includes an intake door body 302 and an intake driving member, the intake door body 302 is rotatably connected to the casing 100, and an output end of the intake driving member is connected to the intake door body 302 and can drive the intake door body 302 to rotate to open and close the intake opening 104. The air outlet 103 can be opened or closed by driving the air inlet door body 302 to rotate through the air inlet driving part, so that the structure of the air inlet door assembly is simple, the movement of the air inlet door body 302 is conveniently controlled, and the air inlet driving part can be an indoor fan 600 or a rotary cylinder. Of course, in other embodiments, the air inlet door body 302 may also be slidably connected to the casing 100, the output end of the air inlet driving member is connected to the air inlet door body 302 and can drive the air inlet door body 302 to slide, and the air inlet door body 302 can open and close the air outlet 103 by driving the air inlet door body 302 to slide through the air inlet driving member.
Optionally, the air inlet door body 302 is arranged in the main air duct 101 and located between the air inlet 104 and the indoor fan 600, and the middle part of the air inlet door body 302 is rotatably connected with the casing 100 through an air inlet rotating shaft, so that the air inlet door body 302 can be prevented from occupying the external space of the casing 100, the integral structure of the indoor unit of the air conditioner is more attractive, and meanwhile, the flowing path of air flow inside the air duct during defrosting of the air conditioner can be shortened, so that the heat exchange efficiency of the indoor heat exchanger 500 is improved, the defrosting speed is accelerated, and the defrosting time is shortened.
Optionally, the first bypass door assembly includes a first bypass door 303 and a first bypass driving element, the first bypass door 303 is rotatably connected to the partition 200, and an output end of the first bypass driving element is connected to the first bypass door 303 and can drive the first bypass door 303 to rotate to open and close the first bypass opening 201. The first bypass vent 201 can be opened or closed by driving the first bypass door 303 to rotate through the first bypass driving member, so that the structure of the first bypass vent door assembly is simple, the first bypass door 303 is convenient to control, and the first bypass driving member can be an indoor fan 600 or a rotary cylinder. Of course, in other embodiments, the first bypass door 303 may be slidably connected to the housing 100, an output end of the first bypass driving element is connected to the first bypass door 303 and can drive the first bypass door 303 to slide, and the first bypass door 303 can open and close the first bypass vent 201 by driving the first bypass door 303 to slide by the first bypass driving element.
Optionally, the second bypass air door assembly includes a second bypass door body 304 and a second bypass driving member, the second bypass door body 304 is rotatably connected to the partition board 200, and an output end of the second bypass driving member is connected to the second bypass door body 304 and can drive the second bypass door body 304 to rotate so as to open and close the second bypass air inlet 202. The second bypass air inlet 202 can be opened or closed by driving the second bypass door body 304 to rotate through the second bypass driving piece, so that the structure of the second bypass air door assembly is simple, the movement of the second bypass door body 304 is conveniently controlled, and the second bypass driving piece can be an indoor fan 600 or a rotary cylinder. Of course, in other embodiments, the second bypass door 304 may be slidably connected to the casing 100, the output end of the second bypass driving element is connected to the second bypass door 304 and can drive the second bypass door 304 to slide, and the second bypass door 304 can be driven by the second bypass driving element to slide to open and close the second bypass air inlet 202.
The embodiment of the application further provides an air conditioner, which comprises an air conditioner indoor unit, the specific structure of the air conditioner indoor unit refers to the above-mentioned embodiments, and as the air conditioner adopts all the technical schemes of all the above-mentioned embodiments, the air conditioner at least has all the beneficial effects brought by the technical schemes of the above-mentioned embodiments, and the details are not repeated herein.
The embodiment of the application further provides a control method of the air conditioner, the control method can be applied to the air conditioner in any embodiment, the air conditioner further comprises an air conditioner outdoor unit, and the air conditioner outdoor unit comprises an outdoor heat exchanger. When the air conditioner operates in the defrosting mode, the indoor heat exchanger 500 is in the evaporation heat exchange state, the outdoor heat exchanger is in the condensation heat exchange state, and the outdoor heat exchanger is heated by high-temperature refrigerant exhaust to melt a frost layer of the outdoor heat exchanger; when the air conditioner operates in the heating mode, the indoor heat exchanger 500 is in a condensation heat exchange state, and the outdoor heat exchanger is in an evaporation heat exchange state.
As shown in fig. 3, the control method provided in the embodiment of the present application includes the following steps: step S110, responding to a defrosting instruction, and controlling an air conditioner to operate in a defrosting mode; step S120, in the defrosting mode, the air outlet door assembly closes the air outlet 103, the air inlet door assembly closes the air inlet 104, the first bypass air door assembly opens the first bypass air vent 201, the second bypass air door assembly opens the second bypass air vent 202, the electric auxiliary heat device 400 and the indoor fan 600 are both in working states, the indoor heat exchanger 500 is in an evaporation heat exchange state, and the outdoor heat exchanger is in a condensation heat exchange state.
Specifically, as shown in fig. 1 and fig. 3, in the defrosting mode, the air conditioner controls the air outlet driving member to drive the air outlet door body 301 to be switched to the closed state (that is, the air outlet door body 301 closes the air outlet 103), controls the air inlet driving member to drive the air inlet door body 302 to be switched to the closed state (that is, the air inlet door body 302 closes the air inlet 104), controls the first bypass driving member to drive the first bypass door body 303 to be switched to the open state (that is, the first bypass door body 303 opens the first bypass vent 201), and controls the second bypass driving member to drive the second bypass door body 304 to be switched to the open state (that is, the second bypass door body 304 opens the second bypass vent 202), and controls the electric auxiliary device 400 and the indoor fan 600 to be turned on; at this time, an airflow channel is formed inside the casing 100 of the indoor unit of the air conditioner by the main air duct 101, the air outlet door 301, the first bypass air vent 201, the bypass air duct 102, the second bypass air vent 202 and the air inlet door 302, and under the driving of the indoor fan 600, the airflow inside the casing 100 enters the bypass air duct 102 through the first bypass air vent 201 after being heated by the low-temperature indoor heat exchanger 500 and the electric auxiliary heat device 400, and is then sucked by the indoor fan 600 from the second bypass air vent 202 and circulates continuously (the arrow direction in fig. 1 is the airflow flowing direction); the indoor heat exchanger 500 absorbs the heat provided by the electric auxiliary heating device 400 through forced convection heat transfer, and the evaporation temperature is increased, so that the exhaust temperature and pressure of the outdoor heat exchanger are both increased, the defrosting process is accelerated, and the air conditioner can be switched to a normal heating mode as soon as possible.
The control method of the air conditioner provided by the embodiment of the application can control defrosting of the air conditioner, and can greatly enhance the heat exchange effect of the indoor heat exchanger 500 by opening the electric auxiliary heating device 400 and the indoor fan 600 to perform forced convection heat exchange on the indoor heat exchanger 500, so that the exhaust temperature and the exhaust pressure of a refrigerant entering the outdoor heat exchanger are greatly increased, defrosting of the outdoor heat exchanger is accelerated, and defrosting time is shortened; simultaneously through closing air outlet 103 and air intake 104 to and open first bypass air vent 201 and second bypass air vent 202, make the forced convection heat transfer go on with indoor environment divided air flow channel inner loop, thereby can not cause the indoor temperature to descend, this application can not cause the indoor temperature to descend when strengthening indoor heat exchanger 500 heat transfer effect promptly, has promoted user experience.
In the prior art, when the air conditioner defrosts, the heating mode is switched to the cooling mode, the indoor heat exchanger 500 of the air conditioner is used as an evaporator to absorb indoor heat, and the heat converted by the work of the compressor are released in the outdoor heat exchanger to melt a frost layer; when defrosting, in order to prevent the air-conditioning indoor unit from blowing cold air, the indoor fan 600 of the air-conditioning indoor unit stops rotating, so that the heat exchange effect of the indoor heat exchanger 500 is poor, the indoor heat exchanger 500 frosts, the heat exchange effect is further reduced, correspondingly, the heat obtained by the outdoor heat exchanger is little, the exhaust temperature is low, and the defrosting speed is low. In the prior art, heating is stopped by defrosting time-space adjustment, indoor heat can be brought outdoors, and long defrosting time can cause indoor temperature reduction, so that user experience is poor.
Compared with the prior art, the main differences of the application are as follows: (1) the running states of the indoor fans 600 are different during defrosting: the indoor fan 600 of the related art is in a stopped state, and the indoor fan 600 of the present application is in an operating state. (2) the operation states of the electric auxiliary heating apparatus 400 are different during defrosting: the prior art electric auxiliary heating apparatus 400 is in an off state, while the electric auxiliary heating apparatus 400 of the present application is in an on state. (3) the heat exchange states of the indoor units of the air conditioners are different during defrosting: in the prior art, only natural convection heat exchange is relied on, the heat exchange effect is poor, and the temperature of the indoor heat exchanger 500 is gradually lowered until frosting occurs, so that the heat exchange condition is further worsened, the exhaust temperature of the outdoor heat exchanger is slowly raised, and the defrosting time is long; and this application forces the convection current heat transfer through opening indoor fan 600 to open the electricity and assist the evaporation temperature that heat is used for improving indoor heat exchanger 500, strengthened indoor heat exchanger 500's heat transfer effect greatly, make outdoor heat exchanger's exhaust temperature rise very fast, the defrosting time is short. (4) influence on indoor temperature: in the prior art, the defrosting time is long, and the room temperature reduction range is large during defrosting; the defrosting time is short, and the indoor temperature can not be reduced in the defrosting period.
Optionally, as shown in fig. 4, the method for controlling an air conditioner provided in the embodiment of the present application further includes the following steps: step S210, responding to a heating instruction, and controlling an air conditioner to operate a heating mode; step S220, in the heating mode, the air outlet door assembly opens the air outlet 103, the air inlet door assembly opens the air inlet 104, the first bypass air door assembly closes the first bypass air vent 201, the second bypass air door assembly closes the second bypass air vent 202, the electric auxiliary heat device 400 and the indoor fan 600 are both in an open state, the indoor heat exchanger 500 is in a condensation heat exchange state, and the outdoor heat exchanger is in an evaporation heat exchange state.
Specifically, as shown in fig. 2 and fig. 4, in the heating mode, the air conditioner controls the air outlet driving member to drive the air outlet door body 301 to switch to the open state (that is, the air outlet door body 301 opens the air outlet 103), controls the air inlet driving member to drive the air inlet door body 302 to switch to the open state (that is, the air inlet door body 302 opens the air inlet 104), controls the first bypass driving member to drive the first bypass door body 303 to switch to the closed state (that is, the first bypass door body 303 closes the first bypass vent 201), controls the second bypass driving member to drive the second bypass door body 304 to switch to the closed state (that is, the second bypass door body 304 closes the second bypass vent 202), and controls the electric auxiliary device 400 and the indoor fan 600 to be opened; at this time, an airflow channel is formed inside the casing 100 of the indoor unit of the air conditioner by the air outlet 103, the main air duct 101, and the air inlet 104, and the indoor air is sucked from the air inlet 104, heated by the indoor heat exchanger 500 and the electric auxiliary heat device 400, and blown out from the air outlet 103 (the direction of the arrow in fig. 2 is the airflow direction), so as to raise the indoor ambient temperature.
Optionally, as shown in fig. 5, the method for controlling an air conditioner provided in the embodiment of the present application further includes the following steps: step S310, responding to a refrigeration instruction, and controlling an air conditioner to operate a refrigeration mode; step S320, in the refrigeration mode, the air outlet assembly opens the air outlet 103, the air inlet assembly opens the air inlet 104, the first bypass air door assembly closes the first bypass air vent 201, the second bypass air door assembly closes the second bypass air vent 202, the electric auxiliary heat device 400 is in a closed state, the indoor fan 600 is in an open state, the indoor heat exchanger 500 is in an evaporation heat exchange state, and the outdoor heat exchanger is in a condensation heat exchange state.
Specifically, in the cooling mode, the air conditioner controls the air outlet driving member to drive the air outlet door body 301 to be switched to the open state (that is, the air outlet door body 301 opens the air outlet 103), controls the air inlet driving member to drive the air inlet door body 302 to be switched to the open and close state (that is, the air inlet door body 302 opens the air inlet 104), controls the first bypass driving member to drive the first bypass door body 303 to be switched to the close state (that is, the first bypass door body 303 closes the first bypass vent 201), and controls the second bypass driving member to drive the second bypass door body 304 to be switched to the close state (that is, the second bypass door body 304 closes the second bypass vent 202), and controls the electric auxiliary device 400 to be closed, and controls the indoor fan 600 to be opened; at this time, an airflow channel is formed inside the casing 100 of the indoor unit of the air conditioner by the air outlet 103, the main air duct 101 and the air inlet 104, and indoor air is sucked from the air inlet 104, cooled by the indoor heat exchanger 500, and blown out from the air outlet 103, thereby reducing the indoor ambient temperature.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first," "second," etc. may explicitly or implicitly include one or more features. The term "and/or" includes any and all combinations of one or more of the associated listed items.
The air conditioner indoor unit and the air conditioner provided by the embodiment of the application are described in detail, a specific example is applied in the description to explain the principle and the implementation of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. An indoor unit of an air conditioner, comprising:
the air conditioner comprises a machine shell (100), wherein an air duct and a partition plate (200) are arranged in the machine shell (100), the air duct is divided into a main air duct (101) and a bypass air duct (102) by the partition plate (200), the main air duct (101) is provided with an air outlet (103) and an air inlet (104) which are formed in the machine shell (100), and a first bypass air vent (201) and a second bypass air vent (202) are formed in the partition plate (200);
the air door mechanism comprises an air outlet door assembly capable of opening and closing the air outlet (103), an air inlet door assembly capable of opening and closing the air inlet (104), a first bypass air door assembly capable of opening and closing the first bypass air opening (201), and a second bypass air door assembly capable of opening and closing the second bypass air opening (202);
the air conditioner comprises an electric auxiliary heating device (400), an indoor heat exchanger (500) and an indoor fan (600), wherein the electric auxiliary heating device (400), the indoor heat exchanger (500) and the indoor fan (600) are sequentially arranged in the main air duct (101) along the direction from the air outlet (103) to the air inlet (104), and the indoor heat exchanger (500) is located on the air outlet side of the indoor fan (600).
2. The indoor unit of air conditioner as claimed in claim 1, wherein the air outlet door assembly includes an air outlet door body (301) and an air outlet driving member, the air outlet door body (301) is rotatably connected to the casing (100), and an output end of the air outlet driving member is connected to the air outlet door body (301) and can drive the air outlet door body (301) to rotate to open and close the air outlet (103).
3. An indoor unit of an air conditioner as claimed in claim 2, wherein the air outlet door (301) is disposed in the main air duct (101) and located between the air outlet (103) and the electric auxiliary heating device (400), and a middle portion of the air outlet door (301) is rotatably connected to the casing (100) through an air outlet rotating shaft.
4. The indoor unit of air conditioner as claimed in claim 1, wherein the air inlet door assembly comprises an air inlet door body (302) and an air inlet driving member, the air inlet door body (302) is rotatably connected with the casing (100), and an output end of the air inlet driving member is connected with the air inlet door body (302) and can drive the air inlet door body (302) to rotate so as to open and close the air inlet (104).
5. The indoor unit of air conditioner as claimed in claim 4, wherein the air intake door (302) is disposed in the main air duct (101) and between the air intake (104) and the indoor fan (600), and the middle of the air intake door (302) is rotatably connected to the casing (100) through an air intake shaft.
6. The indoor unit of claim 1, wherein the first bypass door assembly comprises a first bypass door (303) and a first bypass driving member, the first bypass door (303) is rotatably connected with the partition plate (200), and an output end of the first bypass driving member is connected with the first bypass door (303) and can drive the first bypass door (303) to rotate to open and close the first bypass vent (201);
and/or the second bypass air door assembly comprises a second bypass door body (304) and a second bypass driving piece, the second bypass door body (304) is rotatably connected with the partition plate (200), and the output end of the second bypass driving piece is connected with the second bypass door body (304) and can drive the second bypass door body (304) to rotate so as to open and close the second bypass air opening (202).
7. An air conditioner characterized by comprising an indoor unit of an air conditioner according to any one of claims 1 to 6.
8. A control method of an air conditioner, applied to the air conditioner of claim 7, further comprising an air conditioner outdoor unit including an outdoor heat exchanger; the control method comprises the following steps:
responding to a defrosting instruction, and controlling the air conditioner to operate in a defrosting mode;
in the defrosting mode, the air outlet door assembly closes the air outlet (103), the air inlet door assembly closes the air inlet (104), the first bypass air door assembly opens the first bypass air vent (201), the second bypass air door assembly opens the second bypass air vent (202), the electric auxiliary heating device (400) and the indoor fan (600) are both in a working state, the indoor heat exchanger (500) is in an evaporation heat exchange state, and the outdoor heat exchanger is in a condensation heat exchange state.
9. The control method according to claim 8, characterized by further comprising the steps of:
responding to a heating instruction, and controlling the air conditioner to operate a heating mode;
in the heating mode, the air outlet door assembly opens the air outlet (103), the air inlet door assembly opens the air inlet (104), the first bypass air door assembly closes the first bypass air vent (201), the second bypass air door assembly closes the second bypass air vent (202), the electric auxiliary heat device (400) and the indoor fan (600) are both in an open state, the indoor heat exchanger (500) is in a condensation heat exchange state, and the outdoor heat exchanger is in an evaporation heat exchange state.
10. The control method according to claim 8 or 9, characterized by further comprising the steps of:
responding to a refrigeration instruction, and controlling the air conditioner to operate in a refrigeration mode;
in the refrigeration mode, the air outlet door assembly opens the air outlet (103), the air inlet door assembly opens the air inlet (104), the first bypass air door assembly closes the first bypass air vent (201), the second bypass air door assembly closes the second bypass air vent (202), the electric auxiliary heat device (400) is in a closed state, the indoor fan (600) is in an open state, the indoor heat exchanger (500) is in an evaporation heat exchange state, and the outdoor heat exchanger is in a condensation heat exchange state.
CN202211271287.2A 2022-10-17 2022-10-17 Air conditioner indoor unit, air conditioner and control method of air conditioner Pending CN115507427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211271287.2A CN115507427A (en) 2022-10-17 2022-10-17 Air conditioner indoor unit, air conditioner and control method of air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211271287.2A CN115507427A (en) 2022-10-17 2022-10-17 Air conditioner indoor unit, air conditioner and control method of air conditioner

Publications (1)

Publication Number Publication Date
CN115507427A true CN115507427A (en) 2022-12-23

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Application Number Title Priority Date Filing Date
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Country Link
CN (1) CN115507427A (en)

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