CN113566307A - Air conditioner and control method thereof - Google Patents

Air conditioner and control method thereof Download PDF

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Publication number
CN113566307A
CN113566307A CN202110959562.9A CN202110959562A CN113566307A CN 113566307 A CN113566307 A CN 113566307A CN 202110959562 A CN202110959562 A CN 202110959562A CN 113566307 A CN113566307 A CN 113566307A
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CN
China
Prior art keywords
air
heat exchanger
indoor
air conditioner
outdoor
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Pending
Application number
CN202110959562.9A
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Chinese (zh)
Inventor
许克
刘群波
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.)
GD Midea Air Conditioning Equipment Co Ltd
Midea Group Wuhan HVAC Equipment Co Ltd
Original Assignee
GD Midea Air Conditioning Equipment Co Ltd
Midea Group Wuhan HVAC Equipment Co Ltd
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Publication date
Application filed by GD Midea Air Conditioning Equipment Co Ltd, Midea Group Wuhan HVAC Equipment Co Ltd filed Critical GD Midea Air Conditioning Equipment Co Ltd
Priority to CN202110959562.9A priority Critical patent/CN113566307A/en
Publication of CN113566307A publication Critical patent/CN113566307A/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
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/037—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing with humidification means
    • 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
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/032—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers
    • F24F1/0323—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/0328—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing with means for purifying supplied air
    • F24F1/035—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing with means for purifying supplied air characterised by the mounting or arrangement of filters
    • 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
    • F24F11/0008—Control or safety arrangements for air-humidification
    • 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
    • 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
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/70—Carbon dioxide

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

Abstract

The invention discloses an air conditioner and a control method thereof, wherein the air conditioner comprises a shell, a dehumidification rotating wheel and a heat exchange system, an indoor air duct and an outdoor air duct which are mutually isolated are arranged in the shell, a dehumidification area and a regeneration area of the dehumidification rotating wheel are respectively positioned in the indoor air duct and the outdoor air duct, the heat exchange system comprises a main heat exchange loop with a first heat exchanger and a second heat exchanger and a bypass flow path with a third heat exchanger, the first heat exchanger and the dehumidification rotating wheel are sequentially arranged along the airflow direction of the indoor air duct, and the second heat exchanger, the dehumidification rotating wheel and the third heat exchanger are sequentially arranged along the airflow direction of the outdoor air duct; the exothermic condensation of first heat exchanger under the heating mode can blow the hot-blast to the regeneration area in indoor wind channel, and regeneration area release moisture carries out the humidification to blowing to indoor air-out air current, has promoted user experience. The embodiment adopts the main heat exchange loop, the bypass flow path and the dehumidifying rotating wheel to realize the anhydrous humidifying function of the air conditioner, and reduces the installation cost.

Description

Air conditioner and control method thereof
Technical Field
The present invention relates to the field of air conditioning equipment, and in particular, to an air conditioner, a control method thereof, a control device thereof, and a computer-readable storage medium.
Background
In the related art, the air conditioner generally only has a function of adjusting the temperature of the indoor environment, but does not have a function of humidifying, so that when the indoor air is dry, a user needs to additionally add a humidifier to increase the humidity of the indoor environment. In addition, partial air conditioner also realizes the humidification function through installing humidification device additional, but its structure is complicated, needs external water source moreover, and installation cost is high, the installation degree of difficulty is big.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an air conditioner which can realize the humidifying function under the condition of not externally receiving a water source and reduce the installation cost.
The invention also provides a control method of the air conditioner.
The present invention also provides a control apparatus and a computer-readable storage medium for performing the control method of the air conditioner described above.
An air conditioner according to an embodiment of a first aspect of the present invention includes: a housing, in which an indoor air duct and an outdoor air duct are formed to be separated from each other; the dehumidification rotating wheel is rotationally connected with the shell and comprises a dehumidification area and a regeneration area, one of the dehumidification area and the regeneration area is positioned in the indoor air duct, and the other one of the dehumidification area and the regeneration area is positioned in the outdoor air duct; the heat exchange system comprises a main heat exchange loop and a bypass flow path, wherein the main heat exchange loop comprises a compressor, a four-way valve, a second heat exchanger, a first control valve and a first heat exchanger which are sequentially connected; the bypass flow path comprises a second control valve and a third heat exchanger which are sequentially connected, the first end of the bypass flow path is connected to a pipeline between the first heat exchanger and the first control valve, and the second end of the bypass flow path is connected to the air return port of the compressor; the first heat exchanger is positioned in the indoor air duct, and the first heat exchanger and the dehumidifying rotating wheel are sequentially arranged along the airflow direction of the indoor air duct; the second heat exchanger and the third heat exchanger are located in the outdoor air duct, and the second heat exchanger, the dehumidification rotating wheel and the third heat exchanger are sequentially arranged along the airflow direction of the outdoor air duct.
The air conditioner provided by the embodiment of the invention has at least the following beneficial effects:
by arranging the structure of the shell, the dehumidification rotating wheel and the heat exchange system, an indoor air channel and an outdoor air channel which are mutually isolated are arranged in the shell, the dehumidification area and the regeneration area of the dehumidification rotating wheel are respectively positioned in the indoor air channel and the outdoor air channel, the heat exchange system comprises a main heat exchange loop with a first heat exchanger and a second heat exchanger and a bypass flow path with a third heat exchanger, the first heat exchanger and the dehumidification rotating wheel are sequentially arranged along the airflow direction of the indoor air channel, and the second heat exchanger, the dehumidification rotating wheel and the third heat exchanger are sequentially arranged along the airflow direction of the outdoor air channel; in the heating mode, a refrigerant sequentially passes through the first heat exchanger and the third heat exchanger, the first heat exchanger releases heat for condensation, the third heat exchanger absorbs heat for evaporation, hot air in an indoor air channel can be blown to the regeneration area, the regeneration area releases moisture, and the air outlet air flow blown to the indoor air is humidified, so that the user experience is improved; the refrigerant loops through second heat exchanger and first heat exchanger under the refrigeration mode, and the heat dissipation condensation of second heat exchanger, the heat absorption evaporation of first heat exchanger, when indoor environment humidity is great, the moisture of the air current in indoor wind channel is absorbed in the dehumidification district, carries out the drying to the air-out air current, and the hot-blast of outdoor wind channel blows to the regeneration area simultaneously to discharge moisture has guaranteed the continuous dehumidification of air-out air current. The embodiment adopts the main heat exchange loop, the bypass flow path and the dehumidifying rotating wheel to realize the anhydrous humidifying function of the air conditioner, reduces the installation cost, and has simple structure and low manufacturing cost.
According to some embodiments of the invention, the first control valve is an electronic expansion valve.
According to some embodiments of the invention, the second control valve is an electronic expansion valve.
According to some embodiments of the invention, the housing is provided with a first fresh air opening and a second fresh air opening, the first fresh air opening is located on the air inlet side of the indoor air duct and is communicated with the outdoor environment, and the second fresh air opening is located on the air inlet side of the outdoor air duct and is communicated with the indoor environment; the air conditioner further comprises a first switch valve and a second switch valve, wherein the first switch valve is used for controlling the opening degree of the first fresh air opening, and the second switch valve is used for controlling the opening degree of the second fresh air opening.
According to some embodiments of the present invention, the housing is provided with an indoor air inlet communicating with the indoor environment, and the air conditioner further includes a third on/off valve for controlling opening and closing of the indoor air inlet.
According to some embodiments of the present invention, the air conditioner further comprises an indoor air inlet pipe communicated with an indoor environment, a first filter is disposed in the indoor air inlet pipe, and a tail end of the indoor air inlet pipe is connected to the indoor air inlet and the second fresh air inlet respectively.
According to some embodiments of the present invention, the housing has an outdoor air inlet communicating with the outdoor environment, the air conditioner further comprises an outdoor air inlet pipe communicating with the outdoor environment, the outdoor air inlet pipe has a second filter, and a distal end of the outdoor air inlet pipe is connected to the outdoor air inlet and the first fresh air inlet, respectively.
According to the control method of the air conditioner in the embodiment of the second aspect of the invention, the air conditioner comprises a shell, a dehumidification rotating wheel and a heat exchange system, wherein an indoor air duct and an outdoor air duct which are mutually isolated are formed in the shell; the dehumidification rotating wheel is rotatably connected with the shell and comprises a dehumidification area and a regeneration area, one of the dehumidification area and the regeneration area is positioned in the indoor air duct, and the other one of the dehumidification area and the regeneration area is positioned in the outdoor air duct; the heat exchange system comprises a main heat exchange loop and a bypass flow path, wherein the main heat exchange loop comprises a compressor, a four-way valve, a second heat exchanger, a first control valve and a first heat exchanger which are sequentially connected; the bypass flow path comprises a second control valve and a third heat exchanger which are sequentially connected, the first end of the bypass flow path is connected to a pipeline between the first heat exchanger and the first control valve, and the second end of the bypass flow path is connected to the air return port of the compressor; the first heat exchanger is positioned in the indoor air duct, and the first heat exchanger and the dehumidifying rotating wheel are sequentially arranged along the airflow direction of the indoor air duct; the second heat exchanger and the third heat exchanger are positioned in the outdoor air duct, and the second heat exchanger, the dehumidification rotating wheel and the third heat exchanger are sequentially arranged along the airflow direction of the outdoor air duct;
the control method comprises the following steps:
and when the running state of the air conditioner is a heating mode, controlling the first control valve to be opened, controlling the second control valve to be closed, and controlling the first rotating state of the dehumidifying rotating wheel.
The control method of the air conditioner provided by the embodiment of the invention at least has the following beneficial effects:
by arranging the structure of the shell, the dehumidification rotating wheel and the heat exchange system, an indoor air channel and an outdoor air channel which are mutually isolated are arranged in the shell, the dehumidification area and the regeneration area of the dehumidification rotating wheel are respectively positioned in the indoor air channel and the outdoor air channel, the heat exchange system comprises a main heat exchange loop with a first heat exchanger and a second heat exchanger, a bypass flow path with a third heat exchanger, a first control valve and a second control valve for controlling the flow direction of a refrigerant of the heat exchange system, the first heat exchanger and the dehumidification rotating wheel are sequentially arranged along the air flow direction of the indoor air channel, and the second heat exchanger, the dehumidification rotating wheel and the third heat exchanger are sequentially arranged along the air flow direction of the outdoor air channel; control refrigerant loops through first heat exchanger and third heat exchanger under the heating mode, the exothermic condensation of first heat exchanger, the heat absorption evaporation of third heat exchanger, can blow indoor wind channel's hot-blast to the regeneration zone, regeneration zone release moisture, carry out the humidification to indoor air-out air current blowing, user experience has been promoted, the moisture of the air current of dehumidification runner through the outdoor wind channel of dehumidification district absorption simultaneously, the continuous humidification of air-out air current has been guaranteed, the moisture load of third heat exchanger has been reduced simultaneously, heat exchange system's efficiency is improved, reduce the volume that the third heat exchanger produced the comdenstion water. The embodiment adopts the main heat exchange loop, the bypass flow path and the dehumidifying rotating wheel to realize the anhydrous humidifying function of the air conditioner, reduces the installation cost, and has simple structure and low manufacturing cost.
According to some embodiments of the invention, the controlling the first rotation state of the desiccant rotor comprises:
acquiring the indoor environment humidity;
when the indoor environment humidity is greater than a first preset humidity, controlling the dehumidification rotating wheel to stop rotating;
and when the indoor environment humidity is less than or equal to the first preset humidity, controlling the dehumidifying rotating wheel to rotate.
According to some embodiments of the invention, the control method further comprises:
and when the running state of the air conditioner is a cooling mode, controlling the second control valve to be opened, controlling the first control valve to be closed, and controlling the second rotating state of the dehumidifying rotating wheel.
According to some embodiments of the invention, the controlling the second rotation state of the desiccant rotor comprises:
acquiring the indoor environment humidity;
when the indoor environment humidity is greater than a second preset humidity, controlling the dehumidification rotating wheel to rotate;
and when the indoor environment humidity is less than or equal to the second preset humidity, controlling the dehumidification rotating wheel to stop rotating.
According to some embodiments of the invention, the housing is provided with a first fresh air opening and a second fresh air opening, the first fresh air opening is located on the air inlet side of the indoor air duct and is communicated with the outdoor environment, and the second fresh air opening is located on the air inlet side of the outdoor air duct and is communicated with the indoor environment; the air conditioner also comprises a first switch valve and a second switch valve, wherein the first switch valve is used for controlling the opening degree of the first fresh air opening, and the second switch valve is used for controlling the opening degree of the second fresh air opening;
the control method further comprises the following steps:
when the running state of the air conditioner is in a fresh air mode, controlling the first switch valve and the second switch valve to be opened;
acquiring the carbon dioxide concentration of the indoor environment;
and adjusting the opening degrees of the first switch valve and the second switch valve according to the concentration of the carbon dioxide.
The control device according to the third aspect of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the control method according to the second aspect of the present invention. Since the control device adopts all the technical solutions of the control method of the above embodiment, at least all the advantages brought by the technical solutions of the above embodiments are achieved.
A computer-readable storage medium according to an embodiment of the fourth aspect of the present invention stores computer-executable instructions, and is characterized in that the computer-executable instructions are used for executing the control method according to the embodiment of the second aspect. Since the computer-readable storage medium adopts all the technical solutions of the control method of the above embodiment, at least all the advantages brought by the technical solutions of the above embodiments are achieved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the heat exchange system of FIG. 1;
fig. 3 is a control flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a control flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 5 is a control flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 6 is a control flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 7 is a control flowchart of a control method of an air conditioner according to another embodiment of the present invention.
Reference numerals:
a housing 100; an indoor air inlet 110; a third on/off valve 111; an indoor air outlet 120; an indoor air duct 130; a third filter 131; an outdoor air intake 140; an outdoor air outlet 150; an outdoor duct 160; a first fresh air port 170; a first on-off valve 171; a second fresh air port 180; a second on-off valve 181;
a heat exchange system 200; a primary heat exchange loop 210; a compressor 211; a four-way valve 212; a first heat exchanger 213; a first control valve 214; a second heat exchanger 215; a bypass flow path 220; a second control valve 221; a third heat exchanger 222;
a desiccant rotor 300;
a first fan 400;
a second fan 500;
an indoor air inlet duct 600; a first filter 610;
an outdoor air inlet duct 700; a second filter 710;
a drain pipe 800.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to, for example, the upper, lower, etc., is indicated based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, an air conditioner according to an embodiment of the present invention is an embedded integral air conditioner, and may be installed in an attic, a ceiling, or the like, or may be an integral air conditioner such as a mobile air conditioner, a window air conditioner, or the like, and is not limited herein.
Referring to fig. 1, an air conditioner according to an embodiment of the present invention includes a case 100. The casing 100 is provided with an indoor air inlet 110 and an indoor air outlet 120, the indoor air inlet 110 and the indoor air outlet 120 are both communicated with an indoor environment, an indoor air duct 130 is formed inside the casing 100 between the indoor air inlet 110 and the indoor air outlet 120, indoor air enters the indoor air duct 130 through the indoor air inlet 110, and is discharged out of the indoor environment from the indoor air outlet 120 after heat exchange.
The casing 100 is provided with an outdoor air inlet 140 and an outdoor air outlet 150, both the outdoor air inlet 140 and the outdoor air outlet 150 are communicated with the outdoor environment, an outdoor air duct 160 is formed inside the casing 100 between the outdoor air inlet 140 and the outdoor air outlet 150, outdoor air enters the outdoor air duct 160 through the outdoor air inlet 140, and is discharged out of the outdoor environment through the outdoor air outlet 150 after heat exchange.
It is understood that the indoor duct 130 and the outdoor duct 160 are separated from each other, and thus, air leakage between them is prevented. For example, the indoor duct 130 and the outdoor duct 160 may be separated by a partition, or may be formed by two housings fixedly connected to each other.
Referring to fig. 1 and 2, the air conditioner according to the embodiment of the present invention further includes a heat exchange system 200. The heat exchange system 200 includes a primary heat exchange loop 210 and a bypass flow path 220. The primary heat exchange loop 210 includes a compressor 211, a four-way valve 212, a first heat exchanger 213, a first control valve 214, and a second heat exchanger 215. A first end of the four-way valve 212 is connected to an exhaust port of the compressor 211, a second end of the four-way valve 212 is connected to the first heat exchanger 213, a third end of the four-way valve 212 is connected to the second heat exchanger 215, and a fourth end of the four-way valve 212 is connected to a return air port of the compressor 211. The bypass flow path 220 includes a second control valve 221 and a third heat exchanger 222 connected in series. A first end of the bypass flow path 220 is connected to a line between the first heat exchanger 213 and the first control valve 214, and a second end of the bypass flow path 220 is connected to a return port of the compressor 211. The first heat exchanger 213 is located in the indoor air duct 130, and the second heat exchanger 215 and the third heat exchanger 222 are located in the outdoor air duct 160.
It should be noted that, when the heat exchange system 200 is in the heating mode, the exhaust port of the compressor 211 outputs a high-temperature and high-pressure gaseous refrigerant, and the gaseous refrigerant enters the first heat exchanger 213 through the four-way valve 212 to be condensed and released heat to become a liquid refrigerant; at this time, the first control valve 214 is in a closed state, the second control valve 221 is in an open state, the liquid refrigerant passes through the bypass flow path 220 and passes through a throttling device (not shown in the figure) to be changed into a low-pressure gas-liquid two-phase refrigerant, the gas-liquid two-phase refrigerant enters the third heat exchanger 222 to be evaporated and absorb heat to be changed into a gas refrigerant, and then the gas refrigerant flows back to the return air port of the compressor 211 to realize the refrigerant circulation of the heating circuit.
The air conditioner further includes a first fan 400 and a second fan 500, the first fan 400 is located in the indoor air duct 130, the second fan 500 is located in the outdoor air duct 160, the direction of the arrow shown in fig. 1 is the direction of the air flow of the indoor air duct 130 and the outdoor air duct 160, after the first fan 400 and the second fan 500 are turned on, the indoor air passes through the indoor air duct 130 and then enters the indoor space through the first fan 400, and the outdoor air passes through the outdoor air duct 160 and then enters the outdoor space through the second fan 500. It should be noted that the first fan 400 and the second fan 500 may be turned on simultaneously or separately, and the specific manner is not limited herein. The first fan 400 may be installed at an end of the indoor air duct 130 facing the indoor air outlet 120, and the second fan 500 may be installed at an end of the outdoor air duct 160 facing the outdoor air outlet 150, so as to improve the amount of air and the stability of air outlet.
Under the action of the first fan 400, air in an indoor environment enters the indoor air duct 130 through the indoor air inlet 110, is condensed by the first heat exchanger 213 to form hot air, and the hot air is discharged from the indoor air outlet 120; meanwhile, under the action of the second fan 500, air in the outdoor environment enters the outdoor air duct 160 through the outdoor air inlet 140, is evaporated by the third heat exchanger 222 to form cold air, and is discharged from the outdoor air outlet 150.
It is understood that, when the second control valve 221 is a valve body having only an on-off function, for example, an electromagnetic valve, the bypass flow path 220 is provided with a throttling device, for example, a capillary tube. When the second control valve 221 is a valve body having a throttling function and an on-off function, such as an electronic expansion valve, it is not necessary to provide a throttling device in the bypass flow path 220.
When the heat exchange system 200 is in a refrigeration mode, the four-way valve 212 is reversed, a high-temperature and high-pressure gaseous refrigerant is output from an exhaust port of the compressor 211, and the gaseous refrigerant enters the second heat exchanger 215 through the four-way valve 212 to be condensed and released to become a liquid refrigerant; at this time, the first control valve 214 is in an open state, the second control valve 221 is in a closed state, the liquid refrigerant passes through a throttling device (not shown in the figure) and then becomes a low-pressure gas-liquid two-phase refrigerant, the gas-liquid two-phase refrigerant enters the first heat exchanger 213 to evaporate and absorb heat, and then becomes a gaseous refrigerant, and the gaseous refrigerant flows back to the return air port of the compressor 211 through the four-way valve 212, so that the refrigerant is circulated in the main heat exchange loop 210. Under the action of the first fan 400, air in an indoor environment enters the indoor air duct 130 through the indoor air inlet 110, and is evaporated by the first heat exchanger 213 to form cold air, and the cold air is discharged from the indoor air outlet 120; meanwhile, under the action of the second fan 500, air in the outdoor environment enters the outdoor air duct 160 through the outdoor air inlet 140, and is condensed by the second heat exchanger 215 to form hot air, and the hot air is discharged from the outdoor air outlet 150.
It is understood that, when the first control valve 214 is a valve body having only an on-off function, for example, an electromagnetic valve, the bypass flow path 220 is provided with a throttling device, for example, a capillary tube. When the first control valve 214 is a valve body having a throttle function and an on-off function, such as an electronic expansion valve, it is not necessary to provide a throttle device in the bypass flow path 220.
Referring to fig. 1, the air conditioner according to the embodiment of the present invention further includes a desiccant rotor 300. The dehumidifying rotor 300 is rotatably connected to the housing 100, and the dehumidifying rotor 300 may be driven by a motor and a belt, or may be directly driven by a motor. The desiccant rotor 300 is made of a moisture-absorbing material, a part of the desiccant rotor 300 is located in the indoor air duct 130, and another part of the desiccant rotor 300 is located in the outdoor air duct 160, so that the desiccant rotor rotates in the space between the indoor air duct 130 and the outdoor air duct 160. It is understood that the desiccant rotor 300 includes a desiccant zone (not shown) and a regeneration zone (not shown). When the air passes through the dehumidification region and the temperature is lower than the reheating temperature, the dehumidification rotor 300 can absorb the moisture in the air; when the air passes through the regeneration zone and the temperature is higher than the reheating temperature, the desiccant rotor 300 can release the adsorbed moisture.
It is understood that the first heat exchanger 213 and the desiccant rotor 300 are sequentially disposed along the air flow direction of the indoor air path 130. The second heat exchanger 215, the desiccant rotor 300, and the third heat exchanger 222 are sequentially disposed along the airflow direction of the outdoor air path 160.
It is understood that, when the air conditioner is in the heating mode, a portion of the desiccant rotor 300 located in the outdoor air duct 160 is a desiccant area, and a portion of the desiccant rotor 300 located in the indoor air duct 130 is a regeneration area. When the air in the outdoor air duct 160 passes through the dehumidification region, the moisture in the air is absorbed, so that the outdoor air duct 160 forms dry air and discharges the dry air to the outside; meanwhile, the air in the indoor air duct 130 is condensed by the first heat exchanger 213 to release heat and then forms hot air to blow to the regeneration area, so that the regeneration area releases adsorbed moisture, the air in the indoor air duct 130 forms humidified air and is exhausted indoors, the humidification effect on the indoor environment is achieved, and the user experience is improved. And the dehumidification rotary wheel 300 can recover the moisture absorption capacity in the indoor air duct 130, so that the moisture absorption can be continuously performed in the outdoor air duct 160, and the continuous humidification of the air outlet flow is ensured. In addition, the desiccant rotor 300 absorbs moisture in the air flow of the outdoor air duct 160 through the desiccant region, so as to reduce the moisture load of the third heat exchanger 222, improve the energy efficiency of the heat exchange system 200, reduce the amount of condensed water generated by the third heat exchanger 222, reduce the occurrence of frosting of the third heat exchanger 222, and improve the reliability of the operation of the air conditioner.
When the air conditioner is in the cooling mode, a portion of the desiccant rotor 300 located in the indoor air duct 130 is a desiccant region, and a portion of the desiccant rotor 300 located in the outdoor air duct 160 is a regeneration region. When the air in the indoor air duct 130 passes through the dehumidification region, the moisture in the air is absorbed, so that the air in the indoor air duct 130 is dried and discharged to the indoor, thereby performing a dehumidification function on the indoor environment; meanwhile, the air in the outdoor air duct 160 is condensed by the second heat exchanger 215 to release heat and then form hot air, and the hot air passes through the regeneration region, so that the regeneration region releases adsorbed moisture and discharges the moisture to the outside, and thus the moisture in the air in the indoor air duct 130 is taken to the outdoor air duct 160 by the desiccant rotor 300 and discharged to the outside by the airflow of the outdoor air duct 160, thereby achieving the purpose of indoor dehumidification. The dehumidification rotor 300 can recover the moisture absorption capacity in the outdoor air duct 160, and the moisture absorption can be continuously performed in the indoor air duct 130, so that the continuous dehumidification of the air flow is ensured.
The air conditioner of the embodiment of the invention adopts the main heat exchange loop 210, the bypass flow path 220 and the dehumidifying wheel 300 to realize the water-free humidifying function of the air conditioner, does not need an external water source, reduces the installation cost, and has simple structure and low manufacturing cost.
Referring to fig. 2, it can be understood that the first control valve 214 is an electronic expansion valve, and the electronic expansion valve can control the opening and closing of the flow path to achieve the opening and closing effect of the flow path, and can control the flow rate of the refrigerant in the flow path to achieve the throttling effect of the flow path. First control valve 214 adopts the structure of electronic expansion valve for heat exchange system 200's structure is simple more stable, can adjust the effect of refrigeration or heating according to operating condition moreover, has promoted the performance of air conditioner. It is understood that the first control valve 214 may also be a combination of a connected solenoid valve and a capillary tube, and the specific form may be selected according to the actual product requirement, and is not limited in detail herein.
As shown in fig. 2, it can be understood that the second control valve 221 is an electronic expansion valve, and the electronic expansion valve can control the opening and closing of the flow path to achieve the opening and closing effect of the flow path, and can control the flow rate of the refrigerant in the flow path to achieve the throttling effect of the flow path. The second control valve 221 adopts an electronic expansion valve structure, so that the structure of the heat exchange system 200 is simpler and more stable, the refrigeration or heating effect can be adjusted according to the actual working condition, and the performance of the air conditioner is improved. It is understood that the second control valve 221 may also be a combination of a connected solenoid valve and a capillary tube, and the specific form may be selected according to the actual product requirement, and is not limited in detail herein.
It can be understood that the air conditioner can control the opening and closing of the desiccant rotor 300 according to the actual environment requirement during the operation process, thereby enabling the control of automatic humidification and dehumidification. For example, in the heating mode, when the humidity of the indoor environment is greater than a preset value, there is no need to humidify the indoor air, and the desiccant rotor 300 does not rotate; the dehumidification runner 300 is started when the humidity of the indoor environment is smaller than the preset value, and the air moisture of the outdoor air duct 160 is brought into the indoor air duct 130 through the dehumidification runner 300, so that the indoor air is humidified, the humidity of the indoor environment can be kept stable, and the use experience of a user is improved. In the cooling mode, when the humidity of the indoor environment is less than the preset value, the indoor air does not need to be dehumidified, and the dehumidifying rotary wheel 300 does not rotate; when the humidity of the indoor environment is greater than the preset value, the desiccant rotor 300 is activated, and the desiccant rotor 300 brings the air moisture in the indoor air duct 130 to the outdoor air duct 160, so as to achieve the purpose of dehumidifying the indoor air.
Referring to fig. 1, it can be understood that the housing 100 is provided with a first fresh air port 170 and a second fresh air port 180. The first fresh air opening 170 is communicated with the indoor air duct 130, the first fresh air opening 170 is located on the air inlet side of the indoor air duct 130, and the first fresh air opening 170 can be communicated with the outdoor environment through an air pipe, so that outdoor air can enter the indoor air duct 130 along the first fresh air opening 170 and is sent to the indoor environment after heat exchange, and the air conditioner has a fresh air function.
The second fresh air inlet 180 is communicated with the outdoor air duct 160, the second fresh air inlet 180 is located on the air inlet side of the outdoor air duct 160, the second fresh air inlet 180 can be communicated with the indoor environment through an air pipe, indoor air can enter the outdoor air duct 160 along the second fresh air inlet 180, the outdoor environment is discharged through the outdoor air outlet 150, the air conditioner has a function of exhausting foul air, the pressure of the indoor environment can be guaranteed by the simultaneous operation of the fresh air function and the foul air exhausting function, the indoor environment can obtain fresh air, and user experience is improved. Moreover, the indoor air enters the outdoor air duct 160 through the second fresh air inlet 180, so that the moisture of the indoor air can be recovered by the dehumidifying wheel 300, and the recovered moisture is brought back to the indoor air duct 130, thereby ensuring the humidifying effect while realizing the fresh air exhausting function. It will be appreciated that the indoor air may also be exhausted directly to the outdoor environment through the air duct.
Referring to fig. 1, it can be understood that a first on-off valve 171 is provided at the first fresh air opening 170, and the first on-off valve 171 may control the opening or closing of the first fresh air opening 170 or control the flow rate of the first fresh air opening 170. The second fresh air opening 180 is provided with a second switch valve 181, and the second switch valve 181 can control the opening or closing of the second fresh air opening 180 or control the flow rate of the second fresh air opening 180. Therefore, the air conditioner provided by the embodiment of the invention can control the opening or closing of the fresh air turbidity discharging function and can also control the flow of the fresh air turbidity discharging function.
The first and second switching valves 171 and 181 may be controlled according to the actual use environment. For example, when the air quality of the indoor environment is poor, the first and second switching valves 171 and 181 are opened, and the indoor environment takes fresh air from the first fresh air port 170 and discharges the turbid air of the indoor environment through the second fresh air port 180. And the outdoor air enters the indoor environment after heat exchange in the indoor air duct 130, so that a better fresh air effect is achieved.
Referring to fig. 1, it can be understood that a third on/off valve 111 is provided at the indoor intake vent 110, and the third on/off valve 111 may control opening or closing of the indoor intake vent 110. For example, when the first switch valve 171 and the second switch valve 181 are both opened and the third switch valve 111 is closed, the indoor air is discharged out of the room along the second fresh air opening 180, the outdoor air enters the indoor air duct 130 along the first fresh air opening 170, and the indoor air cannot enter the indoor air duct 130 from the indoor air inlet 110, so that the air discharged from the indoor air outlet 120 of the air conditioner is the outdoor air after heat exchange, thereby achieving the effect of fresh air for the air conditioner. When the first switch valve 171, the second switch valve 181 and the third switch valve 111 are all opened, the outdoor air enters the indoor air duct 130 along the first fresh air inlet 170, and the indoor air enters the indoor air duct 130 from the indoor air inlet 110, so that the air conditioner achieves a partial fresh air effect.
Referring to fig. 1, it can be understood that the air conditioner further includes an indoor air inlet pipe 600, the indoor air inlet pipe 600 is a three-way pipe, a first end of the indoor air inlet pipe 600 is communicated with the indoor environment, a second end of the indoor air inlet pipe 600 is communicated with the indoor air inlet 110, and a third end of the indoor air inlet pipe 600 is communicated with the second fresh air outlet 180, so that indoor air can enter the indoor air duct 130 from the indoor air inlet 110 along the indoor air inlet pipe 600 and can also be discharged to the outdoor air duct 160 from the second fresh air outlet 180 along the indoor air inlet pipe 600. A first filter 610 is provided in the indoor air inlet duct 600. The first filter 610 can filter the indoor air, reduce large particle contaminants such as dust from entering the indoor air duct 130 and the outdoor air duct 160, and avoid polluting the first heat exchanger 213, the desiccant rotor 300, and the first fan 400.
Referring to fig. 1, it can be understood that the air conditioner further includes an outdoor air inlet duct 700, the outdoor air inlet duct 700 is a three-way pipe, a first end of the outdoor air inlet duct 700 is communicated with the outdoor environment, a second end of the outdoor air inlet duct 700 is communicated with the outdoor air inlet 140, and a third end of the outdoor air inlet duct 700 is communicated with the first fresh air opening 170, so that outdoor air can enter the outdoor air duct 160 from the outdoor air inlet 140 along the outdoor air inlet duct 700 and can also enter the indoor air duct 130 from the first fresh air opening 170 along the outdoor air inlet duct 700. A second filter 710 is provided in the outdoor air inlet duct 700. The second filter 710 can filter the indoor air, reduce large particle contaminants such as dust from entering the indoor air duct 130 and the outdoor air duct 160, and avoid polluting the second heat exchanger 215, the third heat exchanger 222, the desiccant rotor 300, and the second fan 500.
It should be noted that the first filter 610 and the second filter 710 are both coarse-grained filter screens, and can filter contaminants such as dust and impurities with large particle sizes in the air.
Referring to fig. 1, it can be understood that a third filter 131 is disposed in the indoor air duct 130. The third filter 131 is located on the upstream side of the first heat exchanger 213 in the airflow direction of the indoor air duct 130, that is, on the air intake side of the first heat exchanger 213. The third filter 131 may be a PM2.5 filter screen, a high efficiency filter, etc., and is not particularly limited herein. The third filter 131 can finely filter the air entering the indoor air duct 130, effectively remove fine pollutants in the air, and is beneficial to maintaining the cleanliness of the indoor air.
Referring to fig. 1, the air conditioner further includes a drain pipe 800 capable of discharging condensed water of the heat exchange system 200 to the outside of the room to prevent water leakage from the air conditioner. The drain pipe 800 is connected to the drain pan of the first heat exchanger 213, and is configured to discharge the condensed water generated by the first heat exchanger 213. The drain pipe 800 may also be used to drain the condensed water generated by the third heat exchanger 222.
Referring to fig. 3, there is shown a control flow chart of a control method of an air conditioner according to an embodiment of the present invention, the control method includes, but is not limited to, the following steps:
s301: when the operation state of the air conditioner is the heating mode, the first control valve 214 is controlled to be opened, the second control valve 221 is controlled to be closed, and the first rotation state of the desiccant rotor 300 is controlled.
The control method according to the embodiment of the present invention is described with the air conditioner shown in fig. 1 and 2 as an embodiment, but is not limited to the embodiment shown in fig. 1 and 2. The air conditioner according to the embodiment of the present invention includes a case 100, a desiccant rotor 300, and a heat exchange system 200. The indoor and outdoor air paths 130 and 160 are formed in the casing 100, and the indoor and outdoor air paths 130 and 160 are separated from each other without blow-by. The desiccant rotor 300 is rotatably connected to the housing 100, and the desiccant region and the regeneration region of the desiccant rotor 300 are respectively located in the indoor air duct 130 and the outdoor air duct 160. The heat exchange system 200 includes a primary heat exchange loop 210 and a bypass flow path 220. The primary heat exchange loop 210 includes a compressor 211, a four-way valve 212, a first heat exchanger 213, a first control valve 214, and a second heat exchanger 215. A first end of the four-way valve 212 is connected to an exhaust port of the compressor 211, a second end of the four-way valve 212 is connected to the first heat exchanger 213, a third end of the four-way valve 212 is connected to the second heat exchanger 215, and a fourth end of the four-way valve 212 is connected to a return air port of the compressor 211. The bypass flow path 220 includes a second control valve 221 and a third heat exchanger 222 connected in series. A first end of the bypass flow path 220 is connected to a line between the first heat exchanger 213 and the first control valve 214, and a second end of the bypass flow path 220 is connected to a return port of the compressor 211. The first heat exchanger 213 is located in the indoor air duct 130, and the second heat exchanger 215 and the third heat exchanger 222 are located in the outdoor air duct 160. The first heat exchanger 213 and the desiccant rotor 300 are sequentially disposed along the airflow direction of the indoor air duct 130, and the second heat exchanger 215, the desiccant rotor 300, and the third heat exchanger 222 are sequentially disposed along the airflow direction of the outdoor air duct 160.
It is understood that when the air conditioner is in the heating mode, the air conditioner may enter the heating mode after being turned on, or enter the heating mode after receiving a command of the heating mode. For example, the user may send a control command in a manner of an air conditioner remote controller or a mobile phone APP, so that the air conditioner executes a heating mode. The first control valve 214 is controlled to be opened, and the second control valve 221 is controlled to be closed, in the embodiment of the present invention, the first control valve 214 and the second control valve 221 are both electronic expansion valves, so the first control valve 214 is controlled to be opened by a certain opening degree, and the opening degree of the second control valve 221 is controlled to be zero. At this time, the gas refrigerant of high temperature and high pressure is output from the exhaust port of the compressor 211, and after passing through the four-way valve 212, the gas refrigerant enters the first heat exchanger 213 to be condensed and released heat, and becomes a liquid refrigerant; the liquid refrigerant passes through the bypass flow path 220 and is throttled by the first control valve 214 to become a low-pressure gas-liquid two-phase refrigerant, the gas-liquid two-phase refrigerant enters the third heat exchanger 222 to be evaporated and absorb heat to become a gas refrigerant, and then the gas refrigerant flows back to the air return port of the compressor 211 to realize refrigerant circulation of the heating loop. It is understood that the opening degree of the first control valve 214 may be adjusted by the evaporation of the third heat exchanger 222, and is not particularly limited herein.
It is understood that the first rotation state of the desiccant rotor 300 is controlled, and the first rotation state of the desiccant rotor 300 includes rotation or stop of rotation. The first rotation state of the desiccant rotor 300 may be controlled according to the humidity of the indoor environment, may be an initial control state after entering the heating mode, or may be a state in which the user sends an instruction for control, and is not limited in detail herein. The portion of the desiccant rotor 300 located in the outdoor air duct 160 is a desiccant area, and the portion of the desiccant rotor 300 located in the indoor air duct 130 is a regeneration area. When the desiccant rotor 300 rotates, moisture in the air is absorbed when the air in the outdoor air duct 160 passes through the desiccant region, so that the outdoor air duct 160 forms dry air and discharges the dry air to the outside; meanwhile, the air in the indoor air duct 130 is condensed by the first heat exchanger 213 to release heat and then forms hot air to blow to the regeneration area, so that the regeneration area releases adsorbed moisture, the air in the indoor air duct 130 forms humidified air and is exhausted indoors, the humidification effect on the indoor environment is achieved, and the user experience is improved. And the dehumidification rotary wheel 300 can recover the moisture absorption capacity in the indoor air duct 130, so that the moisture absorption can be continuously performed in the outdoor air duct 160, and the continuous humidification of the air outlet flow is ensured. In addition, the desiccant rotor 300 absorbs moisture in the air flow of the outdoor air duct 160 through the desiccant region, so as to reduce the moisture load of the third heat exchanger 222, improve the energy efficiency of the heat exchange system 200, reduce the amount of condensed water generated by the third heat exchanger 222, reduce the occurrence of frosting of the third heat exchanger 222, and improve the reliability of the operation of the air conditioner. When the desiccant rotor 300 stops rotating, the air conditioner performs a normal heating mode process.
The control method of the air conditioner of the embodiment of the invention, wherein the air conditioner is provided with a shell 100, a desiccant rotating wheel 300 and a heat exchange system 200, an indoor air duct 130 and an outdoor air duct 160 which are isolated from each other are arranged in the shell 100, a dehumidification area and a regeneration area of the desiccant rotating wheel 300 are respectively positioned in the indoor air duct 130 and the outdoor air duct 160, the heat exchange system 200 comprises a main heat exchange loop 210 with a first heat exchanger 213 and a second heat exchanger 215, a bypass flow path 220 with a third heat exchanger 222, and a first control valve 214 and a second control valve 221 for controlling the flow direction of a refrigerant of the heat exchange system 200, the first heat exchanger 213 and the desiccant rotating wheel 300 are sequentially arranged along the airflow direction of the indoor air duct 130, and the second heat exchanger 215, the desiccant rotating wheel 300 and the third heat exchanger 222 are sequentially arranged along the airflow direction of the outdoor air duct 160. Control the refrigerant and loop through first heat exchanger 213 and third heat exchanger 222 under the heating mode, the exothermic condensation of first heat exchanger 213, the heat absorption evaporation of third heat exchanger 222, can blow indoor wind channel 130's hot-blast to the regeneration zone, regeneration zone release moisture, to blowing to indoor air-out air current humidification, user experience has been promoted, dehumidification runner 300 passes through the moisture of the outdoor air channel 160's of dehumidification district absorption air current simultaneously, the continuous humidification of air-out air current has been guaranteed, the wet load of third heat exchanger 222 has been reduced simultaneously, heat exchange system 200's efficiency is improved, the volume that third heat exchanger 222 produced the comdenstion water is reduced.
Referring to fig. 4, which is a control flowchart of a control method of an air conditioner according to another embodiment of the present invention, step S301 includes, but is not limited to, the following steps:
s401: and acquiring the indoor environment humidity.
It can be understood that the indoor environment humidity can be detected by the humidity sensor, and the air conditioner acquires data of the humidity sensor, so as to acquire the indoor environment humidity. It should be noted that the indoor environment humidity can be detected by a humidity sensor disposed at the indoor air inlet 110, and can be obtained by converting the inlet air humidity of the air conditioner; the indoor environment humidity can also be detected through a humidity sensor arranged in the indoor environment. The humidity sensor may be transmitted to the controller by a wired transmission manner, or may be transmitted to the controller by an invalid transmission manner, such as WIFI or bluetooth, and the specific manner is not limited in this disclosure.
S402: when the indoor environment humidity is greater than the first preset humidity, the dehumidifying wheel 300 is controlled to stop rotating.
It can be understood that, when the indoor environment humidity is greater than the first preset humidity, it is considered that the indoor environment humidity has reached the preset requirement, and at this time, the air conditioner may stop humidifying, that is, the desiccant rotor 300 stops rotating, so that the desiccant rotor 300 no longer absorbs moisture from the air in the outdoor air duct 160 and releases the moisture into the indoor air duct 130, and the air conditioner continues to execute the heating mode to increase the temperature of the indoor environment. It should be noted that the set value of the first preset humidity may be a parameter value determined when the air conditioner leaves a factory; or a parameter value adjusted according to the actual use condition, for example, the parameter value is calculated by acquiring a part of parameters of the air conditioner or environmental parameters, and the specific manner is not limited herein.
S403: when the indoor environment humidity is less than or equal to the first preset humidity, the desiccant rotor 300 is controlled to rotate.
It can be understood that, when the indoor environment humidity is less than or equal to the first preset humidity, it may be considered that the indoor environment humidity has not yet reached the preset requirement, and at this time, the air conditioner needs to humidify, and the desiccant wheel 300 rotates, so as to absorb and release the moisture in the air in the outdoor air duct 160 into the indoor air duct 130, and meanwhile, the air conditioner continues to execute the heating mode, so as to increase the temperature of the indoor environment. The dehumidifying rotor 300 may stop rotating until the humidity of the indoor environment reaches a preset requirement, thereby ensuring the humidifying effect of the air conditioner.
Referring to fig. 5, which is a control flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention, the control method of the air conditioner according to the embodiment of the present invention further includes, but is not limited to, the following steps:
s501: when the operation state of the air conditioner is the cooling mode, the second control valve 221 is controlled to be opened, the first control valve 214 is controlled to be closed, and the second rotation state of the desiccant rotor 300 is controlled.
It is understood that when the air conditioner is in the cooling mode, the air conditioner may enter the cooling mode after being turned on, or enter the heating mode after receiving an instruction of the cooling mode. For example, the user may send a control command in a manner of an air conditioner remote controller or a mobile phone APP, etc., so that the air conditioner executes a cooling mode. The second control valve 221 is controlled to be opened, and the first control valve 214 is controlled to be closed, in the embodiment of the present invention, the first control valve 214 and the second control valve 221 are both electronic expansion valves, so the second control valve 221 is controlled to be opened to a certain opening degree, and the opening degree of the first control valve 214 is controlled to be zero. At this time, the four-way valve 212 is reversed, the exhaust port of the compressor 211 outputs a high-temperature and high-pressure gaseous refrigerant, and the gaseous refrigerant enters the second heat exchanger 215 after passing through the four-way valve 212 to be condensed and released heat to become a liquid refrigerant; the liquid refrigerant is throttled by the second control valve 221 and then changed into a low-pressure gas-liquid two-phase refrigerant, the gas-liquid two-phase refrigerant enters the first heat exchanger 213 to be evaporated and absorb heat, and then is changed into a gas refrigerant, and the gas refrigerant flows back to the return air port of the compressor 211 through the four-way valve 212, so that the refrigerant circulation of the refrigeration loop is realized. It is understood that the opening degree of the second control valve 221 may be adjusted by the evaporation condition of the first heat exchanger 213, and is not particularly limited herein.
It is understood that a portion of the desiccant rotor 300 located in the indoor air duct 130 is a desiccant region, and a portion of the desiccant rotor 300 located in the outdoor air duct 160 is a regeneration region. When the dehumidification rotor 300 rotates, moisture in the air is absorbed when the air in the indoor air duct 130 passes through the dehumidification region, so that the air in the indoor air duct 130 is dried and discharged to the indoor, thereby performing a dehumidification function on the indoor environment; meanwhile, the air in the outdoor air duct 160 is condensed by the second heat exchanger 215 to release heat and then form hot air, and the hot air passes through the regeneration region, so that the regeneration region releases adsorbed moisture and discharges the moisture to the outside, and thus the moisture in the air in the indoor air duct 130 is taken to the outdoor air duct 160 by the desiccant rotor 300 and discharged to the outside by the airflow of the outdoor air duct 160, thereby achieving the purpose of indoor dehumidification. The dehumidification rotor 300 can recover the moisture absorption capacity in the outdoor air duct 160, and the moisture absorption can be continuously performed in the indoor air duct 130, so that the continuous dehumidification of the air flow is ensured.
It is understood that the second rotation state of the desiccant rotor 300 is controlled, and the second rotation state of the desiccant rotor 300 includes rotation or stop of rotation. The second rotation state of the desiccant rotor 300 may be controlled according to the humidity of the indoor environment, may be an initial control state after entering the cooling mode, or may be a state in which the user sends a command for control, and is not limited in detail herein. When the air conditioner operates in the cooling mode, the first heat exchanger 213 evaporates and absorbs heat, and condenses the air flow passing through the indoor air duct 130, so as to dehumidify the indoor air, and therefore, when the air conditioner operates in the normal cooling mode, the initial state of the dehumidifying rotor 300 may be a non-rotating state, and the dehumidifying rotor 300 is controlled to rotate again until a further dehumidifying requirement is required, thereby assisting in dehumidifying. For example, when the air conditioner operates in the cooling mode and the humidity of the indoor environment is high, the desiccant rotor 300 rotates and absorbs moisture, thereby continuously dehumidifying the outlet airflow.
Referring to fig. 6, which is a control flowchart of a control method of an air conditioner according to another embodiment of the present invention, in step S501, the following steps are included, but not limited to:
s601: and acquiring the indoor environment humidity.
It can be understood that the indoor environment humidity can be detected by the humidity sensor, and the air conditioner acquires data of the humidity sensor, so as to acquire the indoor environment humidity. It should be noted that the indoor environment humidity can be detected by a humidity sensor disposed at the indoor air inlet 110, and can be obtained by converting the inlet air humidity of the air conditioner; the indoor environment humidity can also be detected through a humidity sensor arranged in the indoor environment. The humidity sensor may be transmitted to the controller by a wired transmission manner, or may be transmitted to the controller by an invalid transmission manner, such as WIFI or bluetooth, and the specific manner is not limited in this disclosure.
S602: when the indoor environment humidity is greater than the second preset humidity, the dehumidifying wheel 300 is controlled to rotate.
It can be understood that, when the indoor ambient humidity is greater than the second preset humidity, it is considered that the indoor ambient humidity exceeds the preset requirement, at this time, the desiccant wheel 300 is controlled to rotate, so as to adsorb moisture in the air in the indoor air duct 130, and the moisture is heated by the hot air generated by the condensation and heat release of the second heat exchanger 215 in the outdoor air duct 160 and released to the outdoor environment, and meanwhile, the air conditioner continues to perform the cooling mode, and reduces the temperature of the indoor environment. It should be noted that the set value of the second preset humidity may be a parameter value determined when the air conditioner leaves a factory; or a parameter value adjusted according to the actual use condition, for example, the parameter value is calculated by acquiring a part of parameters of the air conditioner or environmental parameters, and the specific manner is not limited herein.
S603: when the indoor environment humidity is less than or equal to the second preset humidity, the dehumidifying wheel 300 is controlled to stop rotating.
It can be understood that, when the indoor environment humidity is less than or equal to the first preset humidity, it may be considered that the indoor environment humidity does not exceed the preset requirement, at this time, the air conditioner does not need to assist in humidification, the dehumidification turning wheel 300 is controlled to stop rotating or to be kept in a non-rotating state, and the air conditioner continues to execute the cooling mode, so as to reduce the temperature of the indoor environment. Until the indoor environment humidity exceeds the preset requirement, the dehumidification rotating wheel 300 can rotate, so that the indoor environment humidity is within a reasonable range, the user experience is improved, and the energy consumption of the air conditioner is reduced.
Referring to fig. 7, which is a control flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention, the control method of the air conditioner according to the embodiment of the present invention further includes, but is not limited to, the following steps:
s701: when the operation state of the air conditioner is the fresh air mode, the first switch valve 171 and the second switch valve 181 are controlled to be opened.
In the air conditioner according to the embodiment of the present invention, the casing 100 is provided with a first fresh air opening 170 and a second fresh air opening 180. The first fresh air opening 170 is communicated with the indoor air duct 130, the first fresh air opening 170 is located on the air inlet side of the indoor air duct 130, and the first fresh air opening 170 can be communicated with the outdoor environment through an air pipe, so that outdoor air can enter the indoor air duct 130 along the first fresh air opening 170 and is sent to the indoor environment after heat exchange, and the air conditioner has a fresh air function. The second fresh air inlet 180 is communicated with the outdoor air duct 160, the second fresh air inlet 180 is located on the air inlet side of the outdoor air duct 160, the second fresh air inlet 180 can be communicated with the indoor environment through an air pipe, indoor air can enter the outdoor air duct 160 along the second fresh air inlet 180, the outdoor environment is discharged through the outdoor air outlet 150, the air conditioner has a function of exhausting foul air, the pressure of the indoor environment can be guaranteed by the simultaneous operation of the fresh air function and the foul air exhausting function, the indoor environment can obtain fresh air, and user experience is improved. Moreover, the indoor air enters the outdoor air duct 160 through the second fresh air inlet 180, so that the moisture of the indoor air can be recovered by the dehumidifying wheel 300, and the recovered moisture is brought back to the indoor air duct 130, thereby ensuring the humidifying effect while realizing the fresh air exhausting function. It will be appreciated that the indoor air may also be exhausted directly to the outdoor environment through the air duct.
It is understood that the first fresh air opening 170 is provided with a first on-off valve 171, and the first on-off valve 171 can control the opening or closing of the first fresh air opening 170 or the opening degree of the first fresh air opening 170. The second fresh air opening 180 is provided with a second switch valve 181, and the second switch valve 181 can control the opening or closing of the second fresh air opening 180 or control the opening degree of the second fresh air opening 180.
It can be understood that, when the air conditioner is in the fresh air mode, the fresh air mode may be entered when the air conditioner receives an instruction of the fresh air mode, or the air conditioner may automatically control to enter the fresh air mode according to parameters of the current environment. The first switch valve 171 is controlled to be opened, and the second switch valve 181 is controlled to be opened, so that fresh air is obtained from the first fresh air inlet 170 by the indoor environment, and the turbid air of the indoor environment is discharged through the second fresh air inlet 180, thereby improving the air quality of the indoor environment. And outdoor air gets into indoor environment again after the heat transfer in indoor wind channel 130, has the new trend effect of preferred, promotes user experience.
S702: and acquiring the carbon dioxide concentration of the indoor environment.
It is understood that the carbon dioxide concentration of the indoor environment can be detected by the carbon dioxide sensor, and the air conditioner acquires data of the carbon dioxide sensor, so as to acquire the carbon dioxide concentration of the indoor environment. It should be noted that the carbon dioxide concentration in the indoor environment can be detected by a carbon dioxide sensor disposed at the indoor air inlet 110, and can be obtained by conversion of the carbon dioxide concentration of the intake air flow of the air conditioner; the carbon dioxide concentration of the indoor environment can be detected by a carbon dioxide sensor arranged in the indoor environment. The carbon dioxide sensor may be transmitted to the controller by a wired transmission manner, or may be transmitted to the controller by an invalid transmission manner, such as WIFI or bluetooth, and the specific manner is not limited in this embodiment.
S703: the opening degrees of the first and second switching valves 171 and 181 are adjusted according to the carbon dioxide concentration.
It can be understood that, when the carbon dioxide concentration is greater than the preset value, it can be considered that the air quality of the indoor environment is poor, and at this time, the first switch valve 171 and the second switch valve 181 are controlled to keep the current open state, so that the air conditioner continues to perform fresh air turbidity removal operation.
It can be understood that the air conditioner can also judge the air quality of the indoor environment according to the value of the carbon dioxide concentration, so as to control the opening degree of the first switch valve 171 and the second switch valve 181, and further control the flow rate of fresh air and the flow rate of exhaust turbidity.
It can be understood that, when the carbon dioxide concentration is less than or equal to the preset value, it may be considered that the air quality of the indoor environment is better, and the first and second switching valves 171 and 181 may be controlled to decrease the opening degree, to decrease the flow rate of fresh air and the flow rate of exhaust turbidity, or to control the first and second switching valves 171 and 181 to close, thereby decreasing the energy consumption of the air conditioner.
An embodiment of the present invention also provides a control apparatus including: a memory, a processor, and a computer program stored on the memory and executable on the processor. The processor and memory may be connected by a bus or other means.
The memory, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory located remotely from the processor, and these remote memories may be connected to the processor through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The non-transitory software programs and instructions required to implement the control method of the air conditioner of the above-described embodiment are stored in the memory, and when executed by the processor, perform the control method of the air conditioner of the above-described embodiment, for example, the method step S301 in fig. 3, the method steps S401 to S403 in fig. 4, the method step S501 in fig. 5, the method steps S601 to S603 in fig. 6, and the method steps S701 to S703 in fig. 7 described above are performed.
The above-described embodiments of the apparatus are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, the embodiment of the invention also provides an air conditioner. The air conditioner of the present embodiment includes the control device as in the above-described embodiments. Since the air conditioner adopts all the technical solutions of the control device of the above embodiment, at least all the advantages brought by the technical solutions of the above embodiments are achieved.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions, which are executed by a processor or a controller, for example, by a processor in the above-mentioned embodiment of the air conditioner, and can make the above-mentioned processor execute the control method of the air conditioner in the above-mentioned embodiment, for example, execute the above-mentioned method step S301 in fig. 3, method steps S401 to S403 in fig. 4, method step S501 in fig. 5, method steps S601 to S603 in fig. 6, and method steps S701 to S703 in fig. 7.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (13)

1. An air conditioner, comprising:
a housing, in which an indoor air duct and an outdoor air duct are formed to be separated from each other;
the dehumidification rotating wheel is rotationally connected with the shell and comprises a dehumidification area and a regeneration area, one of the dehumidification area and the regeneration area is positioned in the indoor air duct, and the other one of the dehumidification area and the regeneration area is positioned in the outdoor air duct;
the heat exchange system comprises a main heat exchange loop and a bypass flow path, wherein the main heat exchange loop comprises a compressor, a four-way valve, a second heat exchanger, a first control valve and a first heat exchanger which are sequentially connected; the bypass flow path comprises a second control valve and a third heat exchanger which are sequentially connected, the first end of the bypass flow path is connected to a pipeline between the first heat exchanger and the first control valve, and the second end of the bypass flow path is connected to the air return port of the compressor;
the first heat exchanger is positioned in the indoor air duct, and the first heat exchanger and the dehumidifying rotating wheel are sequentially arranged along the airflow direction of the indoor air duct; the second heat exchanger and the third heat exchanger are located in the outdoor air duct, and the second heat exchanger, the dehumidification rotating wheel and the third heat exchanger are sequentially arranged along the airflow direction of the outdoor air duct.
2. The air conditioner according to claim 1, wherein: the first control valve is an electronic expansion valve; the second control valve is an electronic expansion valve.
3. The air conditioner according to claim 1, wherein: the shell is provided with a first fresh air opening and a second fresh air opening, the first fresh air opening is positioned on the air inlet side of the indoor air duct and communicated with the outdoor environment, and the second fresh air opening is positioned on the air inlet side of the outdoor air duct and communicated with the indoor environment; the air conditioner further comprises a first switch valve and a second switch valve, wherein the first switch valve is used for controlling the opening degree of the first fresh air opening, and the second switch valve is used for controlling the opening degree of the second fresh air opening.
4. The air conditioner according to claim 3, wherein: the shell is provided with an indoor air inlet communicated with the indoor environment, and the air conditioner further comprises a third switch valve used for controlling the opening and closing of the indoor air inlet.
5. The air conditioner according to claim 4, wherein: the air conditioner further comprises an indoor air inlet pipe communicated with the indoor environment, a first filter is arranged in the indoor air inlet pipe, and the tail end of the indoor air inlet pipe is connected with the indoor air inlet and the second fresh air inlet respectively.
6. The air conditioner according to claim 3, wherein: the shell is provided with an outdoor air inlet communicated with the outdoor environment, the air conditioner further comprises an outdoor air inlet pipe communicated with the outdoor environment, the outdoor air inlet pipe is provided with a second filter, and the tail end of the outdoor air inlet pipe is respectively connected with the outdoor air inlet and the first fresh air inlet.
7. The control method of the air conditioner is characterized in that: the air conditioner comprises a shell, a dehumidification rotating wheel and a heat exchange system, wherein an indoor air channel and an outdoor air channel which are mutually isolated are formed in the shell; the dehumidification rotating wheel is rotatably connected with the shell and comprises a dehumidification area and a regeneration area, one of the dehumidification area and the regeneration area is positioned in the indoor air duct, and the other one of the dehumidification area and the regeneration area is positioned in the outdoor air duct; the heat exchange system comprises a main heat exchange loop and a bypass flow path, wherein the main heat exchange loop comprises a compressor, a four-way valve, a second heat exchanger, a first control valve and a first heat exchanger which are sequentially connected; the bypass flow path comprises a second control valve and a third heat exchanger which are sequentially connected, the first end of the bypass flow path is connected to a pipeline between the first heat exchanger and the first control valve, and the second end of the bypass flow path is connected to the air return port of the compressor; the first heat exchanger is positioned in the indoor air duct, and the first heat exchanger and the dehumidifying rotating wheel are sequentially arranged along the airflow direction of the indoor air duct; the second heat exchanger and the third heat exchanger are positioned in the outdoor air duct, and the second heat exchanger, the dehumidification rotating wheel and the third heat exchanger are sequentially arranged along the airflow direction of the outdoor air duct;
the control method comprises the following steps:
and when the running state of the air conditioner is a heating mode, controlling the first control valve to be opened, controlling the second control valve to be closed, and controlling the first rotating state of the dehumidifying rotating wheel.
8. The control method of an air conditioner according to claim 7, wherein said controlling the first rotation state of the desiccant rotor includes:
acquiring the indoor environment humidity;
when the indoor environment humidity is greater than a first preset humidity, controlling the dehumidification rotating wheel to stop rotating;
and when the indoor environment humidity is less than or equal to the first preset humidity, controlling the dehumidifying rotating wheel to rotate.
9. The control method of an air conditioner according to claim 7, further comprising:
and when the running state of the air conditioner is a cooling mode, controlling the second control valve to be opened, controlling the first control valve to be closed, and controlling the second rotating state of the dehumidifying rotating wheel.
10. The control method according to claim 9, wherein the controlling the second rotation state of the desiccant rotor includes:
acquiring the indoor environment humidity;
when the indoor environment humidity is greater than a second preset humidity, controlling the dehumidification rotating wheel to rotate;
and when the indoor environment humidity is less than or equal to the second preset humidity, controlling the dehumidification rotating wheel to stop rotating.
11. The control method of claim 7, wherein the housing is provided with a first fresh air opening and a second fresh air opening, the first fresh air opening is located on the air inlet side of the indoor air duct and is communicated with the outdoor environment, and the second fresh air opening is located on the air inlet side of the outdoor air duct and is communicated with the indoor environment; the air conditioner also comprises a first switch valve and a second switch valve, wherein the first switch valve is used for controlling the opening degree of the first fresh air opening, and the second switch valve is used for controlling the opening degree of the second fresh air opening;
the control method further comprises the following steps:
when the running state of the air conditioner is in a fresh air mode, controlling the first switch valve and the second switch valve to be opened;
acquiring the carbon dioxide concentration of the indoor environment;
and adjusting the opening degrees of the first switch valve and the second switch valve according to the concentration of the carbon dioxide.
12. A control apparatus comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the control method of the air conditioner according to any one of claims 7 to 11 when executing the computer program.
13. A computer-readable storage medium storing computer-executable instructions for performing the control method of the air conditioner according to any one of claims 7 to 11.
CN202110959562.9A 2021-08-20 2021-08-20 Air conditioner and control method thereof Pending CN113566307A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114135949A (en) * 2021-11-30 2022-03-04 华中科技大学 Fresh air purification and dehumidification humidification device for PEMFC (proton exchange Membrane Fuel cell) combined supply and control method thereof
CN114543176A (en) * 2022-02-16 2022-05-27 青岛海信日立空调系统有限公司 Air conditioning equipment
CN114543171A (en) * 2022-02-16 2022-05-27 青岛海信日立空调系统有限公司 Air conditioner
CN115095919A (en) * 2022-06-21 2022-09-23 宁波奥克斯电气股份有限公司 Fixed-frequency movable air conditioner and energy saving method and energy saving device thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114135949A (en) * 2021-11-30 2022-03-04 华中科技大学 Fresh air purification and dehumidification humidification device for PEMFC (proton exchange Membrane Fuel cell) combined supply and control method thereof
CN114135949B (en) * 2021-11-30 2023-09-19 华中科技大学 PEMFC combined fresh air purifying, dehumidifying and humidifying device and control method thereof
CN114543176A (en) * 2022-02-16 2022-05-27 青岛海信日立空调系统有限公司 Air conditioning equipment
CN114543171A (en) * 2022-02-16 2022-05-27 青岛海信日立空调系统有限公司 Air conditioner
CN115095919A (en) * 2022-06-21 2022-09-23 宁波奥克斯电气股份有限公司 Fixed-frequency movable air conditioner and energy saving method and energy saving device thereof
CN115095919B (en) * 2022-06-21 2023-10-20 宁波奥克斯电气股份有限公司 Fixed-frequency mobile air conditioner and energy saving method and energy saving device thereof

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