CN115235022B - Air conditioner and fresh air control method thereof - Google Patents

Air conditioner and fresh air control method thereof Download PDF

Info

Publication number
CN115235022B
CN115235022B CN202210934310.5A CN202210934310A CN115235022B CN 115235022 B CN115235022 B CN 115235022B CN 202210934310 A CN202210934310 A CN 202210934310A CN 115235022 B CN115235022 B CN 115235022B
Authority
CN
China
Prior art keywords
air
fresh air
heat exchanger
expansion valve
electronic expansion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210934310.5A
Other languages
Chinese (zh)
Other versions
CN115235022A (en
Inventor
向世焜
李林
邹海如
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.)
Hisense Guangdong Air Conditioning Co Ltd
Original Assignee
Hisense Guangdong Air Conditioning Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hisense Guangdong Air Conditioning Co Ltd filed Critical Hisense Guangdong Air Conditioning Co Ltd
Priority to CN202210934310.5A priority Critical patent/CN115235022B/en
Publication of CN115235022A publication Critical patent/CN115235022A/en
Application granted granted Critical
Publication of CN115235022B publication Critical patent/CN115235022B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/16—Arrangement or mounting thereof
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • 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
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
    • F24F2003/1446—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only by condensing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

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

Abstract

The invention discloses an air conditioner and a fresh air control method thereof, wherein outdoor fresh air inlet is divided into two air inlet channels, one channel is internally provided with an outdoor small heat exchanger which can effectively dehumidify and heat fresh air and can prevent condensation of an indoor unit from blowing water, the other channel is provided with a baffle, the air inlet quantity of the fresh air can be effectively increased when the baffle is opened, when a user needs to quickly change the fresh air, the air inlet quantity of the fresh air can be effectively increased by the existence of the channel, and meanwhile, the balance of the humidity control of the fresh air and the air inlet quantity of the fresh air can be well achieved.

Description

Air conditioner and fresh air control method thereof
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a fresh air control method thereof.
Background
With the improvement of living standard, people have higher requirements on living environment, and importance is attached to health and comfort, and the quality of indoor air is directly related to the health of people, so that the indoor air quality has become one of evaluation factors of living environment. The most effective way to improve indoor air quality is to improve indoor fresh air quantity, which can be generally realized by means of windowing and the like, but when indoor air conditioning equipment works, the windowing mode cannot be generally adopted to avoid the influence on the performance of the indoor air conditioning equipment, so that the air conditioner with fresh air function is demanded. At present, a small-sized heat exchanger is generally arranged in an outdoor fresh air system of an air conditioner with a fresh air function, so that fresh air is dehumidified and indoor anhydrous humidification is carried out through dehumidified condensate water, but the flow of the fresh air is hindered due to the existence of the small-sized heat exchanger, so that the fresh air inlet quantity is reduced, and the balance of fresh air humidity control and fresh air inlet quantity cannot be well achieved.
Disclosure of Invention
The embodiment of the invention aims to provide an air conditioner and a fresh air control method thereof, wherein outdoor fresh air inlet is divided into two air inlet channels, one channel is internally provided with an outdoor small heat exchanger which can effectively control fresh air humidity, the other channel is provided with a shielding plate which can be opened or closed according to user control, the fresh air inlet quantity can be effectively improved, and meanwhile, the balance of fresh air humidity control and fresh air inlet quantity can be well achieved.
To achieve the above object, an embodiment of the present invention provides an air conditioner, including:
the indoor unit is used for adjusting the temperature and/or humidity of indoor air;
the outdoor unit is connected with the indoor unit through a connecting pipe;
the fresh air supply device is arranged in the outdoor unit and comprises a first air inlet channel and a second air inlet channel, a fresh air heat exchanger is arranged in the first air inlet channel, an air shielding plate is arranged on the second air inlet channel, and the fresh air supply device is used for conveying outdoor air into a room through the first air inlet channel and/or the second air inlet channel;
the controller is used for controlling the refrigerant in the refrigerating system not to flow through the fresh air heat exchanger and opening the air shielding plate when the start of the fresh air supply function and the closing of the fresh air dehumidification function are detected; when the fresh air supply function and the fresh air dehumidification function are both started, the refrigerant is controlled to flow through the fresh air heat exchanger, and when the air conditioner is in a non-air supply mode, the action of the air shielding plate is controlled according to the detected heat exchange temperature of the fresh air heat exchanger.
As an improvement of the above scheme, the indoor unit comprises an indoor heat exchanger; the outdoor unit also comprises a compressor, an outdoor heat exchanger, a throttling component, a first electronic expansion valve and a second electronic expansion valve; the compressor, the outdoor heat exchanger, the throttling component and the indoor heat exchanger are sequentially connected, two ends of the fresh air heat exchanger are respectively connected with the first electronic expansion valve and the second electronic expansion valve, and the other ends of the first electronic expansion valve and the second electronic expansion valve are respectively connected to the throttling component.
As an improvement of the above scheme, when the fresh air dehumidifying function is detected to be closed, the first electronic expansion valve and the second electronic expansion valve are closed, and the refrigerant in the refrigerating system does not flow through the fresh air heat exchanger;
when the start of the fresh air dehumidifying function is detected, the first electronic expansion valve and the second electronic expansion valve are opened; when the air conditioner is in a refrigeration mode, a dehumidification mode or an air supply mode, a refrigerant in the refrigeration system flows through the fresh air heat exchanger through the first electronic expansion valve and flows into the indoor heat exchanger through the second electronic expansion valve; when the air conditioner is in a heating mode, the refrigerant in the refrigerating system flows through the fresh air heat exchanger through the second electronic expansion valve and flows into the outdoor heat exchanger through the first electronic expansion valve.
As an improvement of the above scheme, after controlling the refrigerant to flow through the fresh air heat exchanger, when the air conditioner is in the air supply mode, the controller is further configured to control the air shielding plate to be closed.
As an improvement of the above scheme, the controlling the action of the air shielding plate according to the detected heat exchange temperature of the fresh air heat exchanger comprises:
when the heat exchange temperature is greater than or equal to a preset first temperature threshold value, the air shielding plate is controlled to be closed;
when the heat exchange temperature is smaller than the first temperature threshold value, determining an operation mode of the air conditioner;
when the air conditioner is in a refrigeration mode or a dehumidification mode, controlling the air shielding plate to be opened, and when the heat exchange temperature measured twice in a preset time interval is greater than or equal to a preset second temperature threshold value, controlling the air shielding plate to be closed; wherein the second temperature threshold is greater than the first temperature threshold;
when the air conditioner is in a heating mode, the air shielding plate is controlled to be opened, and when the heat exchange temperature is greater than or equal to the first temperature threshold value, the air shielding plate is controlled to be closed.
As an improvement of the scheme, the first air inlet channel and the second air inlet channel are arranged in parallel, and the sectional area of the first air inlet channel is larger than that of the second air inlet channel.
In order to achieve the above object, the embodiment of the present invention further provides a method for controlling fresh air of an air conditioner, where the air conditioner includes a fresh air supply device disposed in an outdoor unit, the fresh air supply device includes a first air intake channel and a second air intake channel, a fresh air heat exchanger is disposed in the first air intake channel, an air shielding plate is disposed on the second air intake channel, and the fresh air supply device is configured to convey outdoor air to a room through the first air intake channel and/or the second air intake channel; the method comprises:
when the start of the fresh air supply function and the closing of the fresh air dehumidification function are detected, controlling a refrigerant in a refrigerating system not to flow through the fresh air heat exchanger and opening the air shielding plate;
when the fresh air supply function and the fresh air dehumidification function are both started, the refrigerant is controlled to flow through the fresh air heat exchanger, and when the air conditioner is in a non-air supply mode, the action of the air shielding plate is controlled according to the detected heat exchange temperature of the fresh air heat exchanger.
As an improvement of the above solution, after controlling the refrigerant to flow through the fresh air heat exchanger, the method further includes:
and when the air conditioner is in an air supply mode, controlling the air shielding plate to be closed.
As an improvement of the above scheme, the controlling the action of the air shielding plate according to the detected heat exchange temperature of the fresh air heat exchanger comprises:
when the heat exchange temperature is greater than or equal to a preset first temperature threshold value, the air shielding plate is controlled to be closed;
when the heat exchange temperature is smaller than the first temperature threshold value, determining an operation mode of the air conditioner;
when the air conditioner is in a refrigeration mode or a dehumidification mode, controlling the air shielding plate to be opened, and when the heat exchange temperature measured twice in a preset time interval is greater than or equal to a preset second temperature threshold value, controlling the air shielding plate to be closed; wherein the second temperature threshold is greater than the first temperature threshold;
when the air conditioner is in a heating mode, the air shielding plate is controlled to be opened, and when the heat exchange temperature is greater than or equal to the first temperature threshold value, the air shielding plate is controlled to be closed.
As an improvement of the scheme, the first air inlet channel and the second air inlet channel are arranged in parallel, and the sectional area of the first air inlet channel is larger than that of the second air inlet channel.
Compared with the prior art, the air conditioner and the fresh air control method thereof disclosed by the embodiment of the invention divide outdoor fresh air inlet into two air inlet channels, one channel is internally provided with the outdoor small heat exchanger which can effectively dehumidify and heat fresh air and can prevent condensation of the indoor unit from blowing water, the other channel is provided with the baffle, the air inlet quantity of the fresh air can be effectively increased when the baffle is opened, and when a user needs to quickly change the fresh air, the air inlet quantity of the fresh air can be effectively increased due to the existence of the channel, and meanwhile, the balance of the fresh air humidity control and the fresh air inlet quantity can be well achieved.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an outdoor fresh air system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a fresh air channel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a refrigeration system according to an embodiment of the present invention;
FIG. 5 is a flow chart of operation of the controller in a cooling mode provided by an embodiment of the present invention;
FIG. 6 is a schematic diagram of a flow direction of a refrigerant when a fresh air dehumidification function is turned off in a refrigeration mode according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a flow direction of a refrigerant when a fresh air dehumidifying function is turned on in a refrigerating mode according to an embodiment of the present invention;
FIG. 8 is a flowchart of the operation of the controller in the heating mode provided by the embodiment of the invention;
fig. 9 is a schematic diagram of a refrigerant flow direction when a fresh air dehumidifying function is turned off in a heating mode according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a flow direction of a refrigerant when a fresh air dehumidifying function is turned on in a heating mode according to an embodiment of the present invention;
FIG. 11 is a flowchart illustrating operation of the controller in a dehumidification mode provided by an embodiment of the present disclosure;
FIG. 12 is a flowchart illustrating operation of the controller in the air supply mode according to an embodiment of the present invention;
fig. 13 is a flowchart of a fresh air control method of an air conditioner according to an embodiment of the present invention.
100 parts of indoor units; 200. an outdoor unit; 20A, a first air inlet channel; 20B, a second air inlet channel; 20C, an outdoor fresh air inlet; 11. a compressor; 12. an outdoor heat exchanger; 13. a throttle assembly; 14. an indoor heat exchanger; 15. a fresh air heat exchanger; 16. a first electronic expansion valve; 17. a second electronic expansion valve; 201. a wind shielding plate; 202. a water receiving tray; 203. and a drainage device.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting 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 implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention, and the air conditioner according to an embodiment of the present invention includes an indoor unit 100 and an outdoor unit 200. The indoor unit 100 is used for adjusting the temperature and/or humidity of indoor air, the outdoor unit 200 is connected with the indoor unit 100 through a connection pipe, the outdoor unit 200 is installed outdoors, and the indoor unit 100 is installed indoors.
Referring to fig. 2 to 3, the present invention provides a fresh air intake channel for an outdoor fresh air system, where the channel divides an old single channel into two or more intake channel areas, in this embodiment, two intake channels are preferred, that is, a first intake channel 20A and a second intake channel 20B, respectively, where a fresh air heat exchanger 15 is disposed in the first intake channel 20A, and an air shielding plate 201 is disposed on the second intake channel 20B, and the fresh air supply device is used to convey outdoor air into a room through the first intake channel 20A and/or the second intake channel 20B. The invention selects two fresh air inlet channels, mainly considers that the design is simplified, designs the fresh air channels into two fresh air channels which meet the current functional requirements (two action points of dehumidification and air volume increase) and can achieve the same effect by increasing the air inlet channels, but increases the control difficulty and precision and increases the die design and die opening difficulty.
Specifically, the first air inlet channel 20A and the second air inlet channel 20B are arranged in parallel, the lower air inlet of the air inlet 20C in the outdoor fresh air system is located, outdoor fresh air enters the outdoor fresh air shell through the air inlet 20C, and then flows indoors through the first air inlet channel 20A and the second air inlet channel 20B, the cross sections of the first air inlet channel 20A and the second air inlet channel 20B are regular quadrangles, and the cross section of the first air inlet channel 20A is larger than the cross section of the second air inlet channel 20B, for example, the cross section ratio of the first air inlet channel 20A to the second air inlet channel 20B is 2:1, and the cross section ratio can also be designed into the cross section ratio of other ratios, which is not particularly limited herein.
In the embodiment of the invention, the shape of the fresh air channel is designed into a regular polygon, and the outdoor small heat exchanger dehumidifying device is mainly considered to be easy to match with the fresh air channel, so that the shape of the existing heat exchanger is mostly the regular polygon, and the heat exchanger is easy to produce, process and manufacture. The shape of the fresh air channel can be designed into other shapes such as a round shape, a triangle shape and the like, but correspondingly, the difficulty of the production and assembly process is increased. In addition, the first air inlet channel 20A with the dehumidification function has a larger cross-sectional area to achieve dehumidification and ensure a certain fresh air intake.
Specifically, the section of the air inlet position of the second air inlet channel 20B is provided with an openable or closable air shielding plate 201, two sides of the air shielding plate 201 are provided with stepping motors to control the opening and closing of the air shielding plate 201, the working mode is similar to that of an air swing of an air conditioner hanging machine, the air shielding plate 201 is closed according to fresh air control logic, when fresh air is required to be dehumidified, and the fresh air flows through the first air inlet channel 20A and is dehumidified through the fresh air heat exchanger 15; when the fresh air needs to be quickly changed indoors, the air shielding plate 201 is opened, and the fresh air inlet quantity is increased.
Specifically, the fresh air heat exchanger 15 is located in the first air inlet channel 20A and is perpendicular to the fresh air flow direction, the fresh air heat exchanger 15 is perpendicular to the water receiving tray 202, and is fixed to the water receiving tray 202 at one end close to the drainage device 203 by screws; the water pan 202 is located below the first air inlet channel 20A, and can collect the moisture dehumidified by the fresh air, horizontally placed in the outdoor fresh air shell, and fixed with the shell by screws at two sides; the drainage device 203 is located below the water pan 202 and above the outdoor heat exchanger 12, and drains the condensed water to the outside, and the drainage device 203 is fixed with the outdoor fresh air casing by a screw close to one end of the water pan 202; a humidity sensor (not shown) is positioned at the air inlet of the outdoor fresh air system and is used for detecting the humidity value of the outdoor fresh air; a temperature sensor (not shown) is located on the U-shaped tube in the middle of the fresh air heat exchanger 15, and is used for detecting the temperature of the U-shaped tube of the fresh air heat exchanger 15.
Referring to fig. 4, fig. 4 is a schematic frame diagram of a refrigeration system according to an embodiment of the present invention, where the refrigeration system includes: a compressor 11, an outdoor heat exchanger 12, a throttling assembly 13, an indoor heat exchanger 14, a fresh air heat exchanger 15, a first electronic expansion valve 16 and a second electronic expansion valve 17. The compressor 11, the outdoor heat exchanger 12, the throttling assembly 13 and the indoor heat exchanger 14 are sequentially connected, two ends of the fresh air heat exchanger 15 are respectively connected with the first electronic expansion valve 16 and the second electronic expansion valve 17, and the other ends of the first electronic expansion valve 16 and the second electronic expansion valve 17 are respectively connected to the throttling assembly 11. During operation, the opening degrees of the first electronic expansion valve 16 and the second electronic expansion valve 17 are adjusted, so that the temperature of the fresh air heat exchanger 15 is lower than the outdoor environment temperature, and a dehumidification result is achieved.
Specifically, when it is detected that the fresh air dehumidifying function is turned off, the first electronic expansion valve 16 and the second electronic expansion valve 17 are turned off, and the refrigerant in the refrigeration system does not flow through the fresh air heat exchanger 15;
when the start of the fresh air dehumidifying function is detected, the first electronic expansion valve 16 and the second electronic expansion valve 17 are opened; when the air conditioner is in a refrigeration mode, a dehumidification mode or an air supply mode, the refrigerant in the refrigeration system flows through the fresh air heat exchanger 15 through the first electronic expansion valve 16 and flows into the indoor heat exchanger 14 through the second electronic expansion valve 17; when the air conditioner is in a heating mode, the refrigerant in the refrigerating system flows through the fresh air heat exchanger 15 through the second electronic expansion valve 17 and flows into the outdoor heat exchanger 12 through the first electronic expansion valve 16.
The controller provided by the embodiment of the invention is used for: for controlling the refrigerant in the refrigerating system not to flow through the fresh air heat exchanger 15 and opening the air shielding plate 201 when the start of the fresh air supply function and the closing of the fresh air dehumidification function are detected; when the start of the fresh air supply function and the fresh air dehumidification function is detected, controlling a refrigerant to flow through the fresh air heat exchanger 15, and when the air conditioner is in a non-supply mode (a refrigeration mode, a heating mode and a dehumidification mode), controlling the action of the air shielding plate 201 according to the detected heat exchange temperature of the fresh air heat exchanger 15; the controller is also used to control the shutter 201 to close when the air conditioner is in the air supply mode.
Specifically, the controlling the action of the air shielding plate 201 according to the detected heat exchange temperature of the fresh air heat exchanger 15 includes:
when the heat exchange temperature is greater than or equal to a preset first temperature threshold value, the air shielding plate 201 is controlled to be closed;
when the heat exchange temperature is smaller than the first temperature threshold value, determining an operation mode of the air conditioner;
when the air conditioner is in a refrigeration mode or a dehumidification mode, the air shielding plate 201 is controlled to be opened, and when the heat exchange temperatures measured twice at intervals of a preset time period are both greater than or equal to a preset second temperature threshold value, the air shielding plate 201 is controlled to be closed; wherein the second temperature threshold is greater than the first temperature threshold;
when the air conditioner is in a heating mode, the air shielding plate 201 is controlled to be opened, and when the heat exchange temperature is greater than or equal to the first temperature threshold value, the air shielding plate 201 is controlled to be closed.
When the air conditioner is operated in a cooling mode:
referring to fig. 5, fig. 5 is a flowchart of a controller in a cooling mode according to an embodiment of the present invention, where the controller is configured to execute steps S101 to S111:
s101, starting up and running in a refrigerating mode, and then entering a step S102;
s102, judging whether to start a fresh air supply function, if so, entering a step S104, and if not, entering a step S103;
s103, if the fresh air supply function is not started, controlling the first electronic expansion valve 16 and the second electronic expansion valve 17 to be closed, controlling the air shielding plate 201 to be closed, and ending the flow;
s104, if the fresh air supply function is started, judging whether to start the fresh air dehumidification function, if so, entering a step S106, and if not, entering a step S105;
s105, if the fresh air dehumidifying function is not started, controlling the first electronic expansion valve 16 and the second electronic expansion valve 17 to be closed and controlling the air shielding plate 201 to be opened; at this time, outdoor fresh air flows through the first air inlet channel 20A and the second air inlet channel 20B;
s106, if a fresh air dehumidification function is started, controlling the first electronic expansion valve 16 and the second electronic expansion valve 17 to be opened, and then entering step S107;
s107, reading the heat exchange temperature of the fresh air heat exchanger 15, and then entering step S108;
s108, judging whether the heat exchange temperature is greater than or equal to a first temperature threshold (such as 1 ℃), if so, entering a step S111, and if not, entering a step S109;
s109, when the heat exchange temperature is smaller than the first temperature threshold, in order to avoid blocking fresh air caused by frosting of the fresh air heat exchanger 15, controlling the opening of the air shielding plate 201 to ensure the air intake of indoor fresh air exchange, and then entering step S110;
s110, judging whether the following conditions are met: the heat exchange temperature is more than or equal to the second temperature threshold value, and the reading again is still that the heat exchange temperature is more than or equal to the second temperature threshold value after a preset time period is set, if yes, the step S111 is carried out, and if not, the step S110 is repeatedly carried out;
and S111, controlling the wind shielding plate 201 to be closed.
The cooling mode is exemplified by starting up and running, and the new air exchanging function key is not opened, at this time, the first electronic expansion valve 16 and the second electronic expansion valve 17 are closed, and the model is consistent with the running of the current common cooling air conditioner. Referring to fig. 6, fig. 6 is a schematic flow diagram of a refrigerant when a fresh air dehumidifying function is turned off in a refrigerating mode according to an embodiment of the present invention, and at this time, a flow direction of a refrigerant of the refrigerating system is: is discharged from the compressor 11, flows to the outdoor heat exchanger 12, throttled by the throttle unit 13, flows to the indoor heat exchanger 14, and returns to the suction port of the compressor 11. After the fresh air exchanging function in the refrigerating mode is started, the remote controller interface prompts whether to dehumidify fresh air, if not, or if not, the fresh air dehumidifying function is closed by default, and at the moment, the flowing direction of a refrigerant of the refrigerating system can refer to fig. 6.
For example, after the fresh air ventilation function in the cooling mode is turned on, the remote controller interface may prompt whether to dehumidify the fresh air, and if so, the outdoor fresh air system dehumidifies the fresh air, and fig. 7 may be referred to, where fig. 7 is a schematic diagram of a flow direction of a refrigerant when the fresh air dehumidification function is turned on in the cooling mode provided by the embodiment of the present invention, and at this time, a flow direction of the refrigerant of the cooling system is: discharged from the compressor 11, flows to the outdoor heat exchanger 12, is throttled by the throttle assembly 13, flows to the indoor heat exchanger 14, and flows to the indoor heat exchanger through the first electronic expansion valve 16, and the air flows to a fresh air heat exchanger 15 in the fresh air system, flows to the indoor heat exchanger 14 through the second electronic expansion valve 17, and returns to the air suction port of the compressor 11.
When the air conditioner is operated in a heating mode:
referring to fig. 8, fig. 8 is a flowchart of a heating mode controller according to an embodiment of the present invention, where the controller is configured to execute steps S201 to S211:
s201, starting up operation of a heating mode, and then entering step S202;
s202, judging whether to start a fresh air supply function, if so, entering a step S204, and if not, entering a step S203;
s203, if the fresh air supply function is not started, controlling the first electronic expansion valve 16 and the second electronic expansion valve 17 to be closed, controlling the air shielding plate 201 to be closed, and ending the flow;
s204, if the fresh air supply function is started, judging whether to start the fresh air dehumidification function, if so, entering a step S206, and if not, entering a step S205;
s205, if the fresh air dehumidifying function is not started, controlling the first electronic expansion valve 16 and the second electronic expansion valve 17 to be closed and controlling the air shielding plate 201 to be opened; at this time, outdoor fresh air flows through the first air inlet channel 20A and the second air inlet channel 20B;
s206, if a fresh air dehumidification function is started, controlling the first electronic expansion valve 16 and the second electronic expansion valve 17 to be opened, and then entering step S207;
s207, reading the heat exchange temperature of the fresh air heat exchanger 15, and then entering step S208;
s208, judging whether the heat exchange temperature is greater than or equal to a first temperature threshold (such as 1 ℃), if so, entering a step S211, otherwise, entering a step S209;
s209, when the heat exchange temperature is smaller than the first temperature threshold, controlling the opening of the air shielding plate 201 to ensure the air intake of indoor fresh air exchange in order to avoid blocking fresh air caused by frosting of the fresh air heat exchanger 15, and then entering step S210;
s210, judging whether the heat exchange temperature is greater than or equal to a first temperature threshold, if so, entering a step S211, and if not, repeatedly executing the step S210;
s211, controlling the wind shielding plate 201 to be closed.
The heating mode is started and operated, a new air exchanging function key is not opened, at this time, the first electronic expansion valve 16 and the second electronic expansion valve 17 are closed, and the model is consistent with the current common refrigeration air conditioner operation. Referring to fig. 9, fig. 9 is a schematic diagram of a flow direction of a refrigerant when a fresh air dehumidifying function is turned off in a heating mode according to an embodiment of the present invention, and at this time, a flow direction of the refrigerant of the refrigerating system is: is discharged from the compressor 11, flows to the indoor heat exchanger 14, throttled by the throttle unit 13, flows to the outdoor heat exchanger 12, and returns to the suction port of the compressor 11. After the fresh air changing function in the heating mode is started, the remote controller interface prompts whether to dehumidify fresh air, if not, or if not, the fresh air dehumidifying function is closed by default, and at the moment, the flowing direction of the refrigerant of the refrigerating system can refer to fig. 9.
For example, after the fresh air ventilation function in the heating mode is turned on, the remote controller interface may prompt whether to dehumidify the fresh air, and if so, the outdoor fresh air system dehumidifies the fresh air, and fig. 10 may be referred to, where fig. 10 is a schematic flow diagram of a refrigerant when the fresh air dehumidification function is turned on in the heating mode, and at this time, a flow direction of the refrigerant of the refrigeration system is: discharged from the compressor 11, flows to the indoor heat exchanger 14, one part of the air is throttled by the throttling component 13 and flows to the outdoor heat exchanger 12, the other part of the air flows to the fresh air heat exchanger 15 in the fresh air system through the second electronic expansion valve 17, flows to the outdoor heat exchanger 12 through the first electronic expansion valve 16 and returns to the air suction port of the compressor 11.
When the air conditioner is operated in a dehumidification mode:
referring to fig. 11, fig. 11 is a flowchart illustrating the operation of the controller in the dehumidification mode according to an embodiment of the present invention; the controller is configured to execute steps S301 to S311, the workflow of steps S301 to S311 is the same as that of steps S101 to S111, and will not be described herein again, and similarly, the refrigerant flow direction is the same as that of the refrigeration mode, and will not be described herein again.
When the air conditioner is operated in the air supply mode:
referring to fig. 12, fig. 12 is a flowchart of a controller in an air supply mode according to an embodiment of the present invention, where the controller is configured to execute steps S401 to S416:
s401, starting up and running in an air supply mode, and then entering into a step S402;
s402, judging whether to start a fresh air supply function, if so, entering a step S404, and if not, entering a step S403;
s403, if the fresh air supply function is not started, controlling the first electronic expansion valve 16 and the second electronic expansion valve 17 to be closed, controlling the air shielding plate 201 to be closed, and ending the flow;
s404, if the fresh air supply function is started, judging whether to start the fresh air dehumidification function, if so, entering a step S405, and if not, entering a step S406;
s405, if a fresh air dehumidifying function is started, controlling the first electronic expansion valve 16 and the second electronic expansion valve 17 to be opened and controlling the air shielding plate 201 to be closed;
s406, if the fresh air dehumidifying function is not started, controlling the first electronic expansion valve 16 and the second electronic expansion valve 17 to be closed and controlling the air shielding plate 201 to be opened; at this time, outdoor fresh air flows through the first air inlet channel 20A and the second air inlet channel 20B.
For example, after the air conditioner is turned on in the air supply mode, the outdoor fresh air exchanging function is not started, the first electronic expansion valve 16 and the second electronic expansion valve 17 are in a closed state, and at this time, the compressor is not operated, and the refrigerant does not flow. After the air conditioner is started in the air supply mode, the outdoor fresh air exchanging function is started, the remote controller interface can prompt whether to dehumidify fresh air, and if not, or not, the fresh air dehumidifying function is closed by default. The first electronic expansion valve 16 and the second electronic expansion valve 17 are in a closed state, the compressor does not work, and the refrigerant does not flow. After the air conditioner is started in the air supply mode, the outdoor fresh air exchanging function is started, and the fresh air is dehumidified. At this time, the first electronic expansion valve 16 and the second electronic expansion valve 17 are opened. The air shielding plate 201 is closed, and outdoor fresh air flows from the first air inlet channel 20A to the room. At this time the compressor 11 is started and operated at the lowest frequency. The flow direction of the refrigerant in the air conditioning system is as follows: discharged from the compressor 11, flows to the outdoor heat exchanger 12, one part of which is throttled by the throttle assembly 13 and flows to the indoor heat exchanger 14, and the other part of which flows to the fresh air heat exchanger 15 in the fresh air system through the first electronic expansion valve 16, flows to the indoor heat exchanger 14 through the second electronic expansion valve 17 and then returns to the air suction port of the compressor 11.
Compared with the prior art, the air conditioner disclosed by the embodiment of the invention divides outdoor fresh air inlet into two air inlet channels, one channel is internally provided with the outdoor small heat exchanger which can effectively dehumidify and heat fresh air and control the humidity of the fresh air and prevent condensation of the indoor unit from blowing water, the other channel is provided with the baffle, the air inlet quantity of the fresh air can be effectively increased when the baffle is opened, when a user needs to quickly change the fresh air, the air inlet quantity of the fresh air can be effectively increased due to the existence of the channel, and meanwhile, the balance of the humidity control of the fresh air and the air inlet quantity of the fresh air can be well achieved.
Referring to fig. 13, fig. 13 is a flowchart of a method for controlling fresh air of an air conditioner according to an embodiment of the present invention, where the method for controlling fresh air of the air conditioner is implemented by a controller in the air conditioner, the air conditioner includes a fresh air supply device disposed in an outdoor unit, the fresh air supply device includes a first air intake channel and a second air intake channel, a fresh air heat exchanger is disposed in the first air intake channel, and an air shielding plate is disposed on the second air intake channel, and the fresh air supply device is configured to convey outdoor air into a room through the first air intake channel and/or the second air intake channel; the method comprises:
s1, when the start of a fresh air supply function and the closing of a fresh air dehumidification function are detected, controlling a refrigerant in a refrigerating system not to flow through the fresh air heat exchanger and opening the air shielding plate;
s2, when the fresh air supply function and the fresh air dehumidification function are both started, controlling a refrigerant to flow through the fresh air heat exchanger, and when the air conditioner is in a non-air supply mode, controlling the action of the air shielding plate according to the detected heat exchange temperature of the fresh air heat exchanger.
Specifically, after controlling the refrigerant to flow through the fresh air heat exchanger, the method further comprises:
and when the air conditioner is in an air supply mode, controlling the air shielding plate to be closed.
Specifically, the controlling the action of the air shielding plate according to the detected heat exchange temperature of the fresh air heat exchanger includes:
when the heat exchange temperature is greater than or equal to a preset first temperature threshold value, the air shielding plate is controlled to be closed;
when the heat exchange temperature is smaller than the first temperature threshold value, determining an operation mode of the air conditioner;
when the air conditioner is in a refrigeration mode or a dehumidification mode, controlling the air shielding plate to be opened, and when the heat exchange temperature measured twice in a preset time interval is greater than or equal to a preset second temperature threshold value, controlling the air shielding plate to be closed; wherein the second temperature threshold is greater than the first temperature threshold;
when the air conditioner is in a heating mode, the air shielding plate is controlled to be opened, and when the heat exchange temperature is greater than or equal to the first temperature threshold value, the air shielding plate is controlled to be closed.
Specifically, the first air inlet channel and the second air inlet channel are arranged in parallel, and the sectional area of the first air inlet channel is larger than that of the second air inlet channel.
Specifically, the indoor unit comprises an indoor heat exchanger; the outdoor unit also comprises a compressor, an outdoor heat exchanger, a throttling component, a first electronic expansion valve and a second electronic expansion valve; the compressor, the outdoor heat exchanger, the throttling component and the indoor heat exchanger are sequentially connected, two ends of the fresh air heat exchanger are respectively connected with the first electronic expansion valve and the second electronic expansion valve, and the other ends of the first electronic expansion valve and the second electronic expansion valve are respectively connected to the throttling component.
Specifically, when the fresh air dehumidifying function is detected to be closed, the first electronic expansion valve and the second electronic expansion valve are closed, and the refrigerant in the refrigerating system does not flow through the fresh air heat exchanger;
when the start of the fresh air dehumidifying function is detected, the first electronic expansion valve and the second electronic expansion valve are opened; when the air conditioner is in a refrigeration mode, a dehumidification mode or an air supply mode, a refrigerant in the refrigeration system flows through the fresh air heat exchanger through the first electronic expansion valve and flows into the indoor heat exchanger through the second electronic expansion valve; when the air conditioner is in a heating mode, the refrigerant in the refrigerating system flows through the fresh air heat exchanger through the second electronic expansion valve and flows into the outdoor heat exchanger through the first electronic expansion valve.
It should be noted that, the working process in the fresh air control method of the air conditioner according to the embodiment of the present invention may refer to the working flow chart of the controller in the air conditioner according to the above embodiment, and will not be described herein.
Compared with the prior art, the fresh air control method of the air conditioner disclosed by the embodiment of the invention divides outdoor fresh air into two air inlet channels, wherein one channel is internally provided with an outdoor small heat exchanger which can effectively dehumidify and heat fresh air and can prevent condensation of an indoor unit from blowing water, the other channel is provided with a baffle, the air inlet quantity of the fresh air can be effectively increased when the baffle is opened, and when a user needs to quickly change the fresh air, the air inlet quantity of the fresh air can be effectively increased due to the existence of the channel, and meanwhile, the balance of the fresh air humidity control and the fresh air inlet quantity can be well achieved.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.

Claims (9)

1. An air conditioner, comprising:
the indoor unit is used for adjusting the temperature and/or humidity of indoor air and comprises an indoor heat exchanger;
the outdoor unit is connected with the indoor unit through a connecting pipe and further comprises a compressor, an outdoor heat exchanger, a throttling assembly, a first electronic expansion valve and a second electronic expansion valve; the compressor, the outdoor heat exchanger, the throttling assembly and the indoor heat exchanger are sequentially connected, two ends of the fresh air heat exchanger are respectively connected with the first electronic expansion valve and the second electronic expansion valve, and the other ends of the first electronic expansion valve and the second electronic expansion valve are respectively connected to the throttling assembly;
the fresh air supply device is arranged in the outdoor unit and comprises a first air inlet channel and a second air inlet channel, a fresh air heat exchanger is arranged in the first air inlet channel, an air shielding plate is arranged on the second air inlet channel, and the fresh air supply device is used for conveying outdoor air into a room through the first air inlet channel and/or the second air inlet channel;
the controller is used for controlling the refrigerant in the refrigerating system not to flow through the fresh air heat exchanger and opening the air shielding plate when the start of the fresh air supply function and the closing of the fresh air dehumidification function are detected; when the start of the fresh air supply function and the fresh air dehumidification function is detected, controlling a refrigerant to flow through the fresh air heat exchanger, and when the air conditioner is in a non-supply mode, controlling the action of the air shielding plate according to the detected heat exchange temperature of the fresh air heat exchanger;
when the fresh air dehumidifying function is detected to be closed, the first electronic expansion valve and the second electronic expansion valve are closed, and a refrigerant in the refrigerating system does not flow through the fresh air heat exchanger; when the start of the fresh air dehumidifying function is detected, the first electronic expansion valve and the second electronic expansion valve are opened.
2. The air conditioner as set forth in claim 1, wherein when said air conditioner is in a cooling mode, a dehumidifying mode or a blowing mode, a refrigerant in said cooling system flows through said fresh air heat exchanger through said first electronic expansion valve and flows into said indoor heat exchanger through said second electronic expansion valve; when the air conditioner is in a heating mode, the refrigerant in the refrigerating system flows through the fresh air heat exchanger through the second electronic expansion valve and flows into the outdoor heat exchanger through the first electronic expansion valve.
3. The air conditioner of claim 1, wherein the controller is further configured to control the shutter to close when the air conditioner is in the air supply mode after controlling the flow of the refrigerant through the fresh air heat exchanger.
4. The air conditioner as set forth in claim 1, wherein said controlling the operation of said air shielding plate in accordance with the detected heat exchange temperature of said fresh air heat exchanger includes:
when the heat exchange temperature is greater than or equal to a preset first temperature threshold value, the air shielding plate is controlled to be closed;
when the heat exchange temperature is smaller than the first temperature threshold value, determining an operation mode of the air conditioner;
when the air conditioner is in a refrigeration mode or a dehumidification mode, controlling the air shielding plate to be opened, and when the heat exchange temperature measured twice in a preset time interval is greater than or equal to a preset second temperature threshold value, controlling the air shielding plate to be closed; wherein the second temperature threshold is greater than the first temperature threshold;
when the air conditioner is in a heating mode, the air shielding plate is controlled to be opened, and when the heat exchange temperature is greater than or equal to the first temperature threshold value, the air shielding plate is controlled to be closed.
5. The air conditioner of claim 1, wherein the first air inlet passage and the second air inlet passage are disposed in parallel, and a sectional area of the first air inlet passage is larger than a sectional area of the second air inlet passage.
6. The fresh air control method for the air conditioner is characterized in that the air conditioner comprises a fresh air supply device arranged in the outdoor unit, the fresh air supply device comprises a first air inlet channel and a second air inlet channel, a fresh air heat exchanger is arranged in the first air inlet channel, an air shielding plate is arranged on the second air inlet channel, and the fresh air supply device is used for conveying outdoor air into a room through the first air inlet channel and/or the second air inlet channel; the outdoor unit comprises a compressor, an outdoor heat exchanger, a throttling component, a first electronic expansion valve and a second electronic expansion valve; the compressor, the outdoor heat exchanger, the throttling component and the indoor heat exchanger are sequentially connected, two ends of the fresh air heat exchanger are respectively connected with the first electronic expansion valve and the second electronic expansion valve, and the other ends of the first electronic expansion valve and the second electronic expansion valve are respectively connected to the throttling component; the method comprises:
when the start of the fresh air supply function and the closing of the fresh air dehumidification function are detected, controlling a refrigerant in a refrigerating system not to flow through the fresh air heat exchanger and opening the air shielding plate;
when the start of the fresh air supply function and the fresh air dehumidification function is detected, controlling a refrigerant to flow through the fresh air heat exchanger, and when the air conditioner is in a non-supply mode, controlling the action of the air shielding plate according to the detected heat exchange temperature of the fresh air heat exchanger;
when the fresh air dehumidifying function is detected to be closed, the first electronic expansion valve and the second electronic expansion valve are closed, and a refrigerant in the refrigerating system does not flow through the fresh air heat exchanger; when the start of the fresh air dehumidifying function is detected, the first electronic expansion valve and the second electronic expansion valve are opened.
7. The method of controlling fresh air of an air conditioner according to claim 6, wherein after controlling the flow of the refrigerant through the fresh air heat exchanger, the method further comprises:
and when the air conditioner is in an air supply mode, controlling the air shielding plate to be closed.
8. The method for controlling fresh air of an air conditioner according to claim 6, wherein the controlling the operation of the air shielding plate according to the detected heat exchange temperature of the fresh air heat exchanger comprises:
when the heat exchange temperature is greater than or equal to a preset first temperature threshold value, the air shielding plate is controlled to be closed;
when the heat exchange temperature is smaller than the first temperature threshold value, determining an operation mode of the air conditioner;
when the air conditioner is in a refrigeration mode or a dehumidification mode, controlling the air shielding plate to be opened, and when the heat exchange temperature measured twice in a preset time interval is greater than or equal to a preset second temperature threshold value, controlling the air shielding plate to be closed; wherein the second temperature threshold is greater than the first temperature threshold;
when the air conditioner is in a heating mode, the air shielding plate is controlled to be opened, and when the heat exchange temperature is greater than or equal to the first temperature threshold value, the air shielding plate is controlled to be closed.
9. The method of claim 6, wherein the first air intake channel and the second air intake channel are arranged in parallel, and a cross-sectional area of the first air intake channel is larger than a cross-sectional area of the second air intake channel.
CN202210934310.5A 2022-08-04 2022-08-04 Air conditioner and fresh air control method thereof Active CN115235022B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210934310.5A CN115235022B (en) 2022-08-04 2022-08-04 Air conditioner and fresh air control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210934310.5A CN115235022B (en) 2022-08-04 2022-08-04 Air conditioner and fresh air control method thereof

Publications (2)

Publication Number Publication Date
CN115235022A CN115235022A (en) 2022-10-25
CN115235022B true CN115235022B (en) 2024-03-29

Family

ID=83679937

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210934310.5A Active CN115235022B (en) 2022-08-04 2022-08-04 Air conditioner and fresh air control method thereof

Country Status (1)

Country Link
CN (1) CN115235022B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08216666A (en) * 1995-02-10 1996-08-27 Matsushita Electric Ind Co Ltd Air-conditioning and dehumidification device in heat pump for electric vehicle
CN202403347U (en) * 2011-12-19 2012-08-29 东南大学 Air treatment device
JP2020051667A (en) * 2018-09-26 2020-04-02 東芝キヤリア株式会社 Air conditioner
CN113266873A (en) * 2021-06-21 2021-08-17 珠海格力电器股份有限公司 Fresh air conditioning system and control method thereof
CN113432262A (en) * 2021-06-29 2021-09-24 青岛海信日立空调***有限公司 Air conditioning system
CN216431958U (en) * 2021-07-02 2022-05-03 秦文选 Bypass oxygenation and isothermal difference refrigeration fresh air dehumidifier
CN114704875A (en) * 2022-03-11 2022-07-05 海信（广东）空调有限公司 Air conditioner and control method thereof
CN114811876A (en) * 2022-04-22 2022-07-29 海信（广东）空调有限公司 Air conditioner and control method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08216666A (en) * 1995-02-10 1996-08-27 Matsushita Electric Ind Co Ltd Air-conditioning and dehumidification device in heat pump for electric vehicle
CN202403347U (en) * 2011-12-19 2012-08-29 东南大学 Air treatment device
JP2020051667A (en) * 2018-09-26 2020-04-02 東芝キヤリア株式会社 Air conditioner
CN113266873A (en) * 2021-06-21 2021-08-17 珠海格力电器股份有限公司 Fresh air conditioning system and control method thereof
CN113432262A (en) * 2021-06-29 2021-09-24 青岛海信日立空调***有限公司 Air conditioning system
CN216431958U (en) * 2021-07-02 2022-05-03 秦文选 Bypass oxygenation and isothermal difference refrigeration fresh air dehumidifier
CN114704875A (en) * 2022-03-11 2022-07-05 海信（广东）空调有限公司 Air conditioner and control method thereof
CN114811876A (en) * 2022-04-22 2022-07-29 海信（广东）空调有限公司 Air conditioner and control method thereof

Also Published As

Publication number Publication date
CN115235022A (en) 2022-10-25

Similar Documents

Publication Publication Date Title
JP3404150B2 (en) Air conditioner and control method thereof
US7987680B2 (en) Air conditioner
CN106594930B (en) Energy-saving air conditioning system for machine room
CN113432248A (en) Air conditioner and rotating speed adjusting method of air conditioner fan
CN113266873A (en) Fresh air conditioning system and control method thereof
CN101932885A (en) Air conditioner
CN115235022B (en) Air conditioner and fresh air control method thereof
JP7321283B2 (en) Control devices, air conditioners and air conditioning systems
CN113654217B (en) Control method of air conditioner
CN114234373B (en) Control method and device of fresh air environmental control unit and fresh air environmental control unit
CN201772571U (en) Capacity control device with air side bypass for multi-line indoor unit
CN212319923U (en) Window type air conditioner
JP2007132646A (en) Air conditioner
CN110736142B (en) Air conditioner and rapid dehumidification control method without cooling
JP3385834B2 (en) Air conditioner expansion valve controller
JP4893025B2 (en) Air conditioner
JP2007232266A (en) Air conditioner
CN219494241U (en) Comfortable temperature wind blows out subassembly and tuber pipe machine air conditioner
CN112432239B (en) Constant-temperature dehumidification system of air conditioner, control method and air conditioner
CN215062400U (en) Fresh air conditioning system
CN217817066U (en) Air conditioner
CN216281899U (en) New fan
CN216522004U (en) Indoor unit of air conditioner
CN211953010U (en) Indoor machine of air conditioner
KR102600971B1 (en) Ventilation System of Outdoor Unit Room

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant