CN114608156A - Air conditioner, control method and device thereof, and computer-readable storage medium - Google Patents

Air conditioner, control method and device thereof, and computer-readable storage medium Download PDF

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Publication number
CN114608156A
CN114608156A CN202011423292.1A CN202011423292A CN114608156A CN 114608156 A CN114608156 A CN 114608156A CN 202011423292 A CN202011423292 A CN 202011423292A CN 114608156 A CN114608156 A CN 114608156A
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China
Prior art keywords
pressure
compressor
air conditioner
capacity
way valve
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Granted
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CN202011423292.1A
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Chinese (zh)
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CN114608156B (en
Inventor
谭周衡
杜顺开
曾小朗
黄炯亮
曾昭顺
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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Priority to CN202011423292.1A priority Critical patent/CN114608156B/en
Publication of CN114608156A publication Critical patent/CN114608156A/en
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Publication of CN114608156B publication Critical patent/CN114608156B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • 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
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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

Abstract

The invention discloses a control method of an air conditioner, which is based on the air conditioner provided with a pressure signal component, wherein the pressure signal component is used for communicating a refrigerant pipeline between a four-way valve and a throttling device with a compressor, the pressure signal component triggers the compressor to be switched to a first capacity smaller than the set capacity when the pressure of a measuring point is positioned in a set pressure interval, and the pressure of the measuring point is the pressure of one end of the pressure signal component far away from the compressor, and the method comprises the following steps: starting timing when the compressor is started, controlling the fan to be closed and controlling the four-way valve to set a valve position to operate so as to enable the pressure of a measuring point to be within a set pressure range; and if the timing duration reaches a first set duration, controlling the fan to be started and controlling the four-way valve to operate at a target valve position, wherein the target valve position is a valve position corresponding to the heat exchange mode of the current operation of the air conditioner. The invention also discloses a control device, an air conditioner and a computer readable storage medium. The invention aims to save the energy consumption of the air conditioner adopting the compressor in the starting stage.

Description

Air conditioner, control method and device thereof, and computer readable storage medium
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a control method and a control device for an air conditioner, and a computer-readable storage medium.
Background
With the development of economic technology, air conditioners are more and more widely applied in daily life. At present, when the compressor is started, inertia needs to be overcome to promote the rotating speed to drive the rotating shaft to rotate, at the moment, an electrode of the compressor needs to provide enough torque, the larger the capacity of the compressor is, the larger the resistance which needs to be overcome to promote the rotating speed is, the larger the torque which needs to be provided by the electrode is, and thus the instantaneous current and power of the compressor are larger, and unnecessary energy consumption is consumed when the air conditioner is started.
Disclosure of Invention
The invention mainly aims to provide a control method of an air conditioner, aiming at saving energy consumption of the air conditioner adopting a compressor in a starting stage.
In order to achieve the purpose, the invention provides a control method of an air conditioner, the air conditioner comprises a fan, a refrigerant circulation loop and a pressure signal assembly, the refrigerant circulation loop comprises a compressor, a four-way valve and a throttling device which are sequentially connected, the pressure signal assembly is used for communicating a refrigerant pipeline between the four-way valve and the throttling device with the compressor, the pressure signal assembly is used for triggering the compressor to operate at a first capacity when a measuring point pressure is located in a set pressure interval, the measuring point pressure is the pressure of one end, far away from the compressor, of the pressure signal assembly, and the first capacity is smaller than the set capacity of the compressor; the control method of the air conditioner comprises the following steps:
starting timing when a compressor is started, controlling the fan to be closed and controlling the four-way valve to set a valve position to operate so as to enable the pressure of the measuring point to be within the set pressure interval;
and if the timing duration reaches a first set duration, controlling the fan to be started and controlling the four-way valve to operate at a target valve position, wherein the target valve position is a valve position corresponding to the heat exchange mode of the current operation of the air conditioner.
Optionally, the step of controlling the fan to start and the four-way valve to operate at the target valve position includes:
if the timing duration reaches the first set duration, controlling the fan to be started;
if the timing duration is greater than or equal to a second set duration, controlling the four-way valve to operate at the target valve position;
wherein the second set duration is greater than the first set duration.
Optionally, a value interval of the first set duration is [20s, 40s ]; and/or the presence of a gas in the atmosphere,
and the interval duration between the second set duration and the first set duration is in a value interval of [3s, 20s ].
Optionally, if the timing duration reaches the first set duration, the step of controlling the fan to be turned on includes:
if the timing duration reaches the first set duration, acquiring the exhaust temperature of the compressor;
determining a target rotating speed of the fan according to the exhaust temperature of the compressor;
and controlling the fan to be started according to the target rotating speed.
Optionally, before the step of controlling the four-way valve to operate at the target valve position, the method further includes:
if the timing duration is greater than or equal to the second set duration, acquiring the motor speed of the compressor;
and if the rotating speed of the motor is greater than or equal to the set rotating speed, executing the step of controlling the four-way valve to operate at the target valve position.
Optionally, before the step of controlling the fan to be turned on and controlling the four-way valve to operate at the target valve position if the timing duration reaches a first set duration, the method further includes:
acquiring the outdoor environment temperature;
determining the first set time according to the outdoor environment temperature;
the first set time period is in an increasing trend along with the reduction of the outdoor environment temperature.
Optionally, the air conditioner further includes a valve disposed in the pressure signal assembly, and the control method of the air conditioner further includes:
and when the compressor is started, controlling the valve to be opened.
Optionally, after the step of controlling the fan to be turned on and controlling the four-way valve to operate at the target valve position if the timing duration reaches a first set duration, the method further includes:
if the timing duration is greater than or equal to a third set duration, controlling the valve to be closed; wherein the third set duration is greater than the first set duration.
Optionally, the third set duration is greater than the second set duration.
In addition, in order to achieve the above object, the present application also proposes a control device including: the control method comprises the steps of realizing the control method of the air conditioner according to any one of the above items when the control program of the air conditioner is executed by the processor.
In addition, in order to achieve the above object, the present application further provides an air conditioner, where the air conditioner includes a fan, a refrigerant circulation loop, a pressure signal assembly, and the control device;
the refrigerant circulating loop comprises a compressor, a four-way valve and a throttling device which are sequentially connected, and the pressure signal assembly is used for communicating a refrigerant pipeline between the four-way valve and the throttling device with the compressor;
the pressure signal assembly is used for triggering the compressor to operate at a first capacity when the pressure of a measuring point is in a set pressure interval, the pressure of the measuring point is the pressure of one end, far away from the compressor, of the pressure signal assembly, and the first capacity is smaller than the set capacity of the compressor;
the compressor, the four-way valve and the fan are all connected with the control device.
Optionally, the pressure signal assembly comprises:
one end of the pressure transmission pipe is communicated with a compression cylinder of the compressor, and a refrigerant pipeline between the four-way valve and the throttling device is communicated with the other end of the pressure transmission pipe;
the capacity switching piece is movably arranged at one end of the pressure transmission pipe communicated with the compression cylinder;
the capacity switching member has a first position and a second position, the capacity switching member is located at the first position when the gauge pressure is within the set pressure interval, and the capacity switching member is located at the second position when the gauge pressure is outside the set pressure interval;
when the capacity switching member is located at the first position, the compression capacity of the compression cylinder is the first capacity, and when the capacity switching member is located at the second position, the compression capacity of the compression cylinder is the set capacity.
Optionally, the air conditioner further comprises a first heat exchanger, the first heat exchanger is arranged on a refrigerant pipeline between the four-way valve and the throttling device, and the refrigerant pipeline between the four-way valve and the first heat exchanger is communicated with one end, far away from the compression cylinder, of the pressure transmission pipe.
Further, in order to achieve the above object, the present application also proposes a computer-readable storage medium having stored thereon a control program of an air conditioner, which when executed by a processor, implements the steps of the control method of the air conditioner as recited in any one of the above.
The invention provides a control method of an air conditioner, based on the air conditioner provided with a pressure signal component, a compressor, a four-way valve and a throttling device, wherein the pressure signal component is used for communicating a refrigerant pipeline between the four-way valve and the throttling device with the compressor, and the pressure signal component can switch the compressor to a first capacity smaller than the set capacity when the pressure of a measuring point is in a set pressure interval, so that when the compressor is started, a fan and the four-way valve are controlled to operate at the set valve position to enable the pressure of the measuring point to be in the set pressure interval, the state is maintained until a timing time reaches a first set time length, the fan is started and the four-way valve is controlled to operate at a target valve position matched with the current heat exchange mode of the air conditioner, and based on the control method, in the starting stage of the compressor, the compressor is compressed at a smaller capacity when the fan is closed without energy consumption, the torque required by an electrode can be reduced when the capacity of the compressor is reduced in the process of increasing the rotating speed, the power and the current of the compressor in the starting stage are effectively reduced, and therefore the energy consumption of the compressor in the starting stage is effectively reduced.
Drawings
FIG. 1 is a schematic diagram illustrating a piping connection of a refrigerant circulation system of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic view of the position of the capacity switching member of the compressor of the present invention at different capacities;
FIG. 3 is a diagram illustrating a hardware configuration involved in the operation of an embodiment of the control apparatus of the present invention;
FIG. 4 is a flowchart illustrating an embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 5 is a flow chart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 6 is a timing control diagram related to the control method of the air conditioner of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: the air conditioner comprises a fan, a refrigerant circulation loop and a pressure signal assembly, wherein the refrigerant circulation loop comprises a compressor, a four-way valve and a throttling device which are sequentially connected, the pressure signal assembly is used for communicating a refrigerant pipeline between the four-way valve and the throttling device with the compressor, the pressure signal assembly is used for triggering the compressor to operate at a first capacity when a measuring point pressure is located in a set pressure interval, the measuring point pressure is the pressure of one end, far away from the compressor, of the pressure signal assembly, and the first capacity is smaller than the set capacity of the compressor; the method comprises the following steps: starting timing when a compressor is started, controlling the fan to be closed and controlling the four-way valve to set a valve position to operate so as to enable the pressure of the measuring point to be within the set pressure interval; and if the timing duration reaches a first set duration, controlling the fan to be started and controlling the four-way valve to operate at a target valve position, wherein the target valve position is a valve position corresponding to the heat exchange mode of the current operation of the air conditioner.
In the prior art, when the compressor is started, inertia needs to be overcome to promote the rotating speed so as to drive the rotating shaft to rotate, the electrode of the compressor needs to provide enough torque, the larger the capacity of the compressor is, the larger the resistance which needs to be overcome to promote the rotating speed is, the larger the torque which needs to be provided by the electrode is, and thus the instantaneous current and power of the compressor are larger, and unnecessary energy consumption is consumed when the air conditioner is started.
The present invention provides the above solution, aiming at saving the energy consumption in the starting stage of the air conditioner using the compressor.
The embodiment of the invention provides an air conditioner which can be a cabinet air conditioner, a wall-mounted air conditioner, a window air conditioner and the like.
In an embodiment of the present invention, referring to fig. 1, an air conditioner includes a compressor 1, a four-way valve 2, a first heat exchanger 3, a throttle device 4, and a second heat exchanger 5. One of the first heat exchanger 3 and the second heat exchanger 5 is provided indoors, and the other of the first heat exchanger 3 and the second heat exchanger 5 is provided outdoors.
A compression cylinder 101 is provided in the compressor 1, and the compression cylinder 101 has an exhaust port 11 and an intake port 12. The exhaust port 11 and the suction port 12 are both connected with the four-way valve 2, and the four-way valve 2, the first heat exchanger 3, the throttling device 4 and the second heat exchanger 5 are sequentially connected. The compression cylinder 101 can compress the refrigerant flowing into the suction port 12. The number of compression cylinders 101 may be provided in one or more than one according to requirements. When the capacity of the compression cylinder 101 is different, the capacity of the compressor 1 for compressing the refrigerant is different, and the output capacity of the compressor 1 is different.
Specifically, the four-way valve 2 has four valve ports, which are a port C, a port D, a port S, and a port E. The port D is communicated with an exhaust port 11 of the compressor 1, the port S is communicated with an air suction port 12 of the compressor 1, the port E is communicated with one end of the first heat exchanger 3, the other end of the first heat exchanger 3 is communicated with one end of the throttling device 4, the other end of the throttling device 4 is communicated with one end of the second heat exchanger 5, and the other end of the second heat exchanger 5 is communicated with the port C. Based on this, a refrigerant circulation loop of the air conditioner is formed, after the refrigerant coming out of the exhaust port 11 flows into the four-way valve 2, when the four-way valve 2 is located at the first valve position, the refrigerant flows back to the four-way valve 2 after passing through the first heat exchanger 3, the throttling device 4 and the second heat exchanger 5 in sequence, and when the four-way valve 2 is located at the second valve position, the refrigerant flows back to the four-way valve 2 after passing through the second heat exchanger 5, the throttling device 4 and the first heat exchanger 3 in sequence, and then flows back to the suction port 12 from the four-way valve 2 to be recompressed in the compression cylinder 101.
Referring to fig. 1, the air conditioner further includes a pressure signal assembly 01. The pressure signal component 01 is used for switching the compressor 1 to a first capacity when a pressure at a measuring point is in a set pressure interval, wherein the pressure at the measuring point is the pressure at one end of the pressure signal component 01 far away from the compressor 1, and the first capacity is smaller than the set capacity of the compressor 1. In the present embodiment, the set capacity specifically refers to the maximum capacity of the compressor 1. In other embodiments, the set capacity may be other capacities smaller than the maximum capacity of the compressor 1, and may be set according to actual situations.
The pressure signal component 01 is specifically a device for changing the compression capacity of the compressor 1 based on the pressure between the throttling device 4 and the four-way valve 2, and the specific structure of the device is not particularly limited, and only the function of switching the compression capacity based on the pressure state can be realized. It should be noted that, in the process of the device for changing the compression capacity of the compressor 1, the pressure signal component 01 does not need to be electrically controlled, and is the capacity change of the compressor 1 directly realized based on the thermodynamic fit structure.
Specifically, in the embodiment of the present invention, referring to fig. 2, the pressure signal assembly 01 includes a pressure transmission pipe 6 and a capacity switching member 7, one end of the pressure transmission pipe 6 is communicated with a compression cylinder 101 of the compressor 1, a refrigerant pipeline between the four-way valve 2 and the throttling device 4 is communicated with the other end of the pressure transmission pipe 6, and the capacity switching member 7 is movably disposed at one end of the pressure transmission pipe 6 communicated with the compression cylinder 101. The pressure transmission pipe 6 is specifically a capillary tube to prevent the refrigerant between the four-way valve 2 and the throttling device 4 from entering the compressor from the pressure signal assembly 01 and affecting the normal circulation of the refrigerant of the air conditioner.
The air pressure between the throttling device 4 and the four-way valve 2 (i.e. the pressure at the end of the pressure signal component 01 far away from the compressor 1) is defined as the measuring point air pressure. The capacity switching member 7 has a first position and a second position, the capacity switching member 7 is located at the first position when the gauge pressure is within the set pressure range, and the capacity switching member 7 is located at the second position when the gauge pressure is outside the set pressure range. The compression capacity of the compression cylinder 101 is the first capacity when the capacity switching member 7 is located at the first position, and the compression capacity of the compression cylinder 101 is the set capacity when the capacity switching member 7 is located at the second position.
The capacity switching member 7 is embodied as a member for changing the compression capacity of the compressor 1 by its position change. When the capacity switching member 7 is located at different positions, the compressor 1 has different compression capacities. Specifically, when the number of the compression cylinders 101 is one, the capacity switching member 7 may be configured to change the amount of refrigerant involved in compression in the compression cylinder 101 or change the volume of the refrigerant compressed in the compression cylinder 101; when the number of the compression cylinders 101 is one, the capacity switching member 7 may be used to change the number of the compression cylinders 101 participating in compression.
The air pressure between the throttle device 4 and the four-way valve 2 is defined as the measured point air pressure, and the air pressure in the compression cylinder 101 is defined as the second air pressure. The capacity switching member 7 switches between different positions according to the pressure difference between the measured point air pressure and the second air pressure, so that the capacity of the compression cylinder 101 changes. Specifically, the position of the capacity switching member 7 depends on the air pressure of the refrigerant pipe on both sides thereof. Defining the position where the first air pressure and the second air pressure are equal as a reference position, when the air pressure of the measuring point is greater than a set pressure threshold value, the air pressure of the measuring point is greater than the second air pressure, and the position of the capacity switching piece 7 is positioned on one side of the reference position, which is close to the compression cylinder 101; when the first air pressure is less than or equal to the set pressure threshold and the second air pressure is greater than the measured point air pressure, the position of the capacity switching member 7 is located on the other side of the reference position away from the compression cylinder 101.
If the air pressure of the measuring point is greater than the second air pressure, the deviation amount of the air pressure of the measuring point and the second air pressure is different, the distance between the position of the capacity switching piece 7 and the reference position is different, and the larger the deviation amount is, the farther the position of the capacity switching piece 7 is from the reference position; when the second air pressure is higher than the measuring point air pressure, and the deviation amount between the measuring point air pressure and the second air pressure is different, the distance of the position of the capacity switching member 7 from the reference position is different, and the larger the deviation amount is, the farther the position of the capacity switching member 7 is from the reference position. The capacity of the compression cylinder 101 changes with the change in the position of the capacity switching member 7.
The position of the pressure transmission pipe 6 far from the end of the compression cylinder 101 can be specifically selected based on the position of the capacity switching member 7 corresponding to different capacities of the compressor 1 and the pressure level between the four-way valve 2 and the first heat exchanger 3 at different valve positions. For example, the pressure transmission pipe 6 may communicate a refrigerant pipeline between the four-way valve 2 and the first heat exchanger 3 with the compression cylinder 101, the pressure transmission pipe 6 may also communicate a refrigerant pipeline between the first heat exchanger 3 and the throttling device 4 with the compression cylinder 101, and the pressure transmission pipe 6 may also communicate a refrigerant pipeline between the first heat exchanger 3 and the throttling device 4, and a refrigerant pipeline between the four-way valve 2 and the first heat exchanger 3 with the compression cylinder 101 at the same time, based on which, if the compression cylinder 101 is a first capacity when the pressure at the measuring point is less than or equal to the set pressure threshold value, and is a set capacity when the pressure at the measuring point is greater than the set pressure threshold value, the compression cylinder 101 operates at a first valve position with a larger set capacity by the four-way valve 2, and the compression cylinder 101 operates at a second valve position with a smaller first capacity by the four-way valve 2; if the compression cylinder 101 is at the first capacity when the gauge pressure is greater than or equal to the set pressure threshold value and at the set capacity when the gauge pressure is less than the set pressure threshold value, the compression cylinder 101 operates at the first capacity, which is smaller, of the four-way valve 2 at the first valve position, and the compression cylinder 101 operates at the set capacity, which is larger, of the four-way valve 2 at the second valve position.
In addition, the refrigerant pipeline between the four-way valve 2 and the second heat exchanger 5 can be communicated with the compression cylinder 101 through the pressure transmission pipe 6, the refrigerant pipeline between the second heat exchanger 5 and the throttling device 4 can also be communicated with the compression cylinder 101 through the pressure transmission pipe 6, the refrigerant pipeline between the second heat exchanger 5 and the throttling device 4 and the refrigerant pipeline between the four-way valve 2 and the second heat exchanger 5 can also be communicated with the compression cylinder 101 through the pressure transmission pipe 6, and therefore if the pressure of a measuring point of the compression cylinder 101 is a first capacity when the pressure of the measuring point is smaller than or equal to a set pressure threshold value and the pressure of the measuring point is a set capacity when the pressure of the measuring point is larger than the set pressure threshold value, the compression cylinder 101 operates at a second valve position through the four-way valve 2, and the compression cylinder 101 operates at a first capacity when the four-way valve 2 is at the first valve position; if the compression cylinder 101 is at the first capacity when the gauge pressure is greater than or equal to the set pressure threshold and at the set capacity when the gauge pressure is less than the set pressure threshold, then the compression cylinder 101 operates at a larger set capacity when the four-way valve 2 is at the first valve position, and the compression cylinder 101 operates at a smaller first capacity when the four-way valve 2 is at the second valve position.
In this embodiment, the first heat exchanger 3 is an indoor heat exchanger, the compressor 1 operates at a larger set capacity when the air conditioner is in a heating operation (i.e., when the indoor heat exchanger is a condenser), and the compressor 1 operates at a smaller first capacity when the air conditioner is in a cooling operation (i.e., when the indoor heat exchanger is an evaporator). Based on this, if the compression cylinder 101 has a first smaller capacity when the pressure at the measuring point is less than or equal to the set pressure threshold, and the compression cylinder 101 has a set larger capacity when the pressure at the measuring point is greater than the set pressure threshold, the end of the pressure transmission pipe 6 away from the compression cylinder 101 can be arranged between the four-way valve 2 and the first heat exchanger 3; if the compression cylinder 101 has a larger set capacity when the pressure at the measuring point is less than or equal to the set pressure threshold value, and if the compression cylinder 101 has a smaller first capacity when the pressure at the measuring point is greater than the set pressure threshold value, the end of the pressure transmission pipe 6 away from the compression cylinder 101 can be disposed between the four-way valve 2 and the second heat exchanger 5. By the mode, no matter the air conditioner is started in heating or cooling, the four-way valve 2 runs at the second valve position, the compressor 1 can be compressed at a smaller capacity, the power and the current of the compressor in the starting stage are effectively reduced, and therefore the energy consumption of the compressor in the starting stage is effectively reduced.
Specifically, referring to fig. 2, the number of the compression cylinders 101 is one, the compressor 1 is further provided with a bypass line 102, an air outlet of the bypass line 102 is communicated with the air suction port 12, an air inlet of the bypass line 102 is arranged between the air outlet 11 and the air suction port 12, and one end of the pressure transmission pipe 6, which is provided with the capacity switching member 7, is communicated with the bypass line 102.
Referring to fig. 2(a), when the capacity switching member 7 is located at the second position, the capacity switching member 7 closes the bypass passage 102, and the compression capacity of the compressor 1 is a set capacity. Referring to fig. 2(b), when the capacity switching member 7 is located at the first position, the capacity switching member 7 opens the bypass line 102, and the compression capacity of the compressor 1 is a first capacity.
Based on the above structure, the set pressure section may be a pressure range smaller than or equal to the set pressure threshold, so that the compression capacity of the compressor 1 may be reduced when the pressure at the measurement point between the four-way valve 2 and the throttling device 4 is smaller than or equal to the set pressure threshold, and the compression capacity of the compressor 1 may be restored to the set capacity when the pressure between the four-way valve 2 and the throttling device 4 is greater than the set pressure threshold.
In other embodiments, the number of the compression cylinders 101 may be more than one according to actual requirements, and the number of the compression cylinders 101 used for compression is switched by the capacity switching member to realize the capacity change of the compressor. Further, the compressor 1 can be operated at a smaller first capacity when the gauge pressure is greater than or equal to the set pressure threshold, and at a larger set capacity when the gauge pressure is less than the set pressure threshold.
Further, referring to fig. 1, one end of the pressure transmission pipe 6, which is far away from the compression cylinder 101, is communicated with a refrigerant pipeline between the four-way valve 2 and the first heat exchanger 3. The refrigerant pipeline between the four-way valve 2 and the first heat exchanger 3 has more gaseous refrigerant and less liquid refrigerant; the refrigerant pipeline between the first heat exchanger 3 and the throttling device 4 has less gaseous refrigerant quantity and more liquid refrigerant quantity; based on this, connect the compression transmission pipe between the refrigerant pipeline between four-way valve 2 and first heat exchanger 3, can effectively avoid liquid refrigerant to get into compressor 1 and cause the liquid attack harm to compressor 1 to improve the reliability of compressor when realizing the variable capacity of compressor.
Further, referring to fig. 1, the air conditioner further includes a valve 01a provided in the pressure signal assembly 01. The control valve 01a is specifically provided in the pressure transmission pipe 6. The valve 01a is specifically used for controlling the opening or closing of the capacity-changing function of the compressor 1 by the pressure signal component 01. Specifically, when the valve 01a is opened, the capacity of the compressor 1 can be adapted to the pressure state between the four-way valve 2 and the throttling device 4 to realize capacity automatic switching; when the valve 01a is closed, the compressor 1 can maintain a fixed capacity operation.
Further, the air conditioner further comprises a fan 8, and the fan 8 is specifically arranged corresponding to the heat exchanger. Specifically, the fan 8 may include an indoor fan and an outdoor fan, the indoor fan is disposed corresponding to the heat exchanger located on the indoor side in the first heat exchanger 3 and the second heat exchanger 5, and the outdoor fan is disposed corresponding to the heat exchanger located on the outdoor side in the first heat exchanger 3 and the second heat exchanger 5.
Based on the air conditioner, the embodiment of the invention also provides a control device, which can be applied to control the air conditioner
In an embodiment of the present invention, referring to fig. 3, the control device includes: a processor 1001 (e.g., CPU), memory 1002, etc. The processor 1001 and the memory 1002 are connected by a communication bus. The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1002 may alternatively be a storage device separate from the processor 1001.
The compressor 1, the four-way valve 2 and the fan 8 in the air conditioner are all connected with a control device, and the control device can be used for controlling the operation of the components.
Those skilled in the art will appreciate that the device configuration shown in fig. 3 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 3, a control program of the air conditioner may be included in the memory 1002, which is a kind of computer-readable storage medium. In the apparatus shown in fig. 3, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform operations of the relevant steps of the control method of the air conditioner in the following embodiments.
The embodiment of the invention also provides a control method of the air conditioner, which is used for controlling the air conditioner.
Referring to fig. 4, an embodiment of a control method of an air conditioner according to the present invention is provided. In this embodiment, the method for controlling an air conditioner includes:
step S10, starting timing when the compressor is started, controlling the fan to be closed and controlling the four-way valve to set a valve position to operate so as to enable the pressure of the measuring point to be within the set pressure interval;
and when a starting instruction of the compressor is received, controlling a motor of the compressor to be started, and starting timing at the same time. And when the timing duration is less than the first set timing duration, controlling the fan to be closed and the four-way valve to operate at the set valve position. When the four-way valve operates at a set valve position, the pressure of one end, far away from the compressor, of the pressure signal assembly is located in a set pressure interval. The four-way valve is provided with a first valve position and a second valve position, wherein the set valve position is the valve position which can enable the pressure of the measuring point to be within the set pressure interval. In this embodiment, the set valve position may specifically refer to a valve position before the four-way valve is powered on.
The set pressure interval can be specifically set according to the position of the pressure signal assembly far away from one end of the compressor, the pressure intervals of different measuring point pressures corresponding to different capacities of the compression cylinder and the like. If the pressure of the measuring point of the compression cylinder is smaller than or equal to the set pressure threshold, setting a pressure interval as a pressure value set smaller than or equal to the set pressure threshold; and when the pressure at the measuring point is greater than or equal to the set pressure threshold, the compression cylinder has a smaller first capacity, and the set pressure interval is a pressure value set greater than or equal to the set pressure threshold.
When the four-way valve operates at the set valve position, under the action of the pressure signal component, the compression capacity of the compressor in a first set time length is a first capacity lower than the set capacity.
And step S20, if the timing duration reaches a first set duration, controlling the fan to be started and controlling the four-way valve to operate at a target valve position, wherein the target valve position is a valve position corresponding to a heat exchange mode of the current operation of the air conditioner.
When the timing duration reaches the first set duration, the starting of the fan and the running of the four-way valve at the target valve position can be controlled simultaneously or sequentially according to actual requirements. When the fan and the four-way valve are controlled in sequence, the fan can be started first and then the four-way valve is controlled to operate at a target valve position, and the four-way valve can also be controlled to operate at the target valve position first and then the fan is started.
The target valve position is a valve position which enables the capacity of a compression cylinder of the compressor to meet indoor heat exchange requirements. Specifically, in this embodiment, the target valve position is a valve position for operating the compressor at a larger set capacity when the heat exchange mode is the heating operation, and the target valve position is a valve position for operating the compressor at a smaller first capacity when the heat exchange mode is the cooling operation.
The target valve position and the set valve position can be set to be the same or different valve positions according to different heat exchange modes. For example, in the present embodiment, the set valve position is a refrigeration valve position of an air conditioner, and when the air conditioner starts to refrigerate, the set valve position is the same as the target valve position; and setting the valve position to be different from the target valve position when the air conditioner is started for heating. Based on the method, when the compressor is started by heating of the air conditioner, the four-way valve operates at a set valve position, the pressure of a measuring point is within a set pressure interval, and the compressor operates at a first smaller capacity; when the four-way valve is switched to the target valve position, the pressure of the measuring point is positioned outside the set pressure interval, and the compressor runs at a larger set capacity. When the compressor is started in the air conditioner in a refrigerating mode, the four-way valve is maintained at the set valve position, so that the pressure of the measuring point is always within the set pressure interval, and the compressor is maintained to operate at a first smaller capacity.
Based on this, after the fan is opened and the four-way valve is controlled to operate at the target valve position, the compressor can compress the refrigerant with a smaller first capacity during the refrigerating operation of the air conditioner, and compress the refrigerant with a larger set capacity during the heating operation of the air conditioner, and on the basis, the air conditioning system normally exchanges heat to adjust the air of the indoor environment under the action of the fan.
The first set time period may be a preset system parameter, or a parameter determined based on the operation condition (such as indoor temperature, outdoor temperature, indoor humidity, outdoor humidity, etc.) of the air conditioner before the compressor is started.
The embodiment of the invention provides a control method of an air conditioner, which is based on the air conditioner provided with a pressure signal assembly, a compressor, a four-way valve and a throttling device, wherein the pressure signal assembly is used for communicating a refrigerant pipeline between the four-way valve and the throttling device with the compressor, and the pressure signal assembly can switch the compressor to a first capacity smaller than the set capacity when the pressure of a measuring point is in a set pressure interval, so that when the compressor is started, a fan and the four-way valve are controlled to operate at the set valve position to enable the pressure of the measuring point to be in the set pressure interval, the state is maintained until the timing time reaches the first set time, the fan is started and the four-way valve is controlled to operate at a target valve position matched with the current heat exchange mode of the air conditioner, and based on the control method, in the starting stage of the compressor, the compressor is compressed at a smaller capacity when the fan is closed, the capacity of the compressor is reduced, and the torque required by an electrode can be reduced in the process of increasing the rotating speed of the compressor, the power and the current of the compressor in the starting stage are effectively reduced, and therefore the energy consumption of the compressor in the starting stage is effectively reduced.
Further, in this embodiment, the measuring point pressure corresponding to the target valve position is outside the set pressure interval, and before step S20, the method may further include: acquiring the outdoor environment temperature; determining the first set time according to the outdoor environment temperature; the first set time period is in an increasing trend along with the reduction of the outdoor environment temperature. Different outdoor ambient temperatures correspond to different first set time periods. Wherein the lower the outdoor ambient temperature is, the longer the first set time period is. Specifically, the corresponding relationship between the outdoor environment temperature and the first set time period may be preset, and may be a calculation relationship or a mapping relationship. Based on the corresponding relation, the first set time length corresponding to the current compressor starting stage can be determined through the outdoor environment temperature in the modes of calculating or searching a mapping table and the like. Here, since the output capacity of the compressor is increased at a slower rate in the start-up stage when the outdoor ambient temperature is low, the first set time period is longer based on this, so that it is ensured that the motor and the four-way valve operate at the target valve position after the rotational speed is increased, and the compressor can operate at a low capacity for a sufficient time period, thereby further avoiding unnecessary power consumption in the start-up stage.
Further, based on the above embodiments, another embodiment of the control method of the air conditioner of the present application is provided. In this embodiment, the measured point pressure corresponding to the target valve position is outside the set pressure interval, and referring to fig. 5, the step S20 includes:
step S21, if the timing duration reaches the first set duration, controlling the fan to start;
specifically, when the timing duration is greater than or equal to a first set timing duration, the fan can be controlled to be started. Specifically, the rotation speed of the fan during starting operation may be a preset fixed rotation speed, or may be determined according to an actual operation condition of the air conditioner (e.g., an indoor temperature, an outdoor temperature, a temperature difference between the indoor temperature and a set temperature, etc.).
Step S22, if the timing duration is longer than or equal to a second set duration, controlling the four-way valve to operate at the target valve position; wherein the second set duration is greater than the first set duration.
After the first fan is started, the interval reaches a second set time length, and the four-way valve can be controlled to be opened. The second set time period may be a preset system parameter, a parameter determined based on the actual operating condition of the air conditioner, or a parameter determined based on the first set time period and an interval time period preset or determined based on the actual operating condition.
In this embodiment, the value interval of the first set duration is [20s, 40s ], and the first set duration may be specifically selected within this interval, for example, 30 s. When the first set time is less than 20s, the rotating speed of the motor is too short, the rotating speed is still small, the resistance of the rotating shaft is still large, namely, the rotating speed can be increased only by needing large current and power, and if the four-way valve operates at the target valve position, the pressure of a measuring point is increased, so that the capacity of the compressor is increased, the current and the power of the compressor are unnecessarily increased, and the energy-saving effect is poor. When being greater than 40s for the time of first settlement, can lead to the electrode rotational speed to promote fixed rotational speed early, nevertheless fan and cross valve still switch to the target valve position, and air conditioning system fails refrigeration cycle for a long time, influences the heat transfer effect of air conditioner.
And the value interval of the interval duration between the first set duration and the second set duration is [3s, 20s ]. For example, 5s may be selected. Specifically, the interval between the first set time and the second set time is less than 3s, which can cause the system pressure to be difficult to reach the condition of four-way valve position switching, and easily causes the failure of four-way valve position switching; the interval between the first set time and the second set time is more than 20s, so that the rotating speed of the electrode is increased to a fixed rotating speed as soon as possible, but the four-way valve is not switched to a target valve position, and the air conditioning system fails to perform refrigeration cycle for a long time, so that the heat exchange effect of the air conditioner is influenced.
Further, when the timing duration is longer than or equal to a second set duration, controlling the four-way valve to operate at a target valve position, and firstly acquiring the motor speed of the compressor; and if the rotating speed of the motor is greater than or equal to the set rotating speed, executing the step of controlling the four-way valve to operate at the target valve position. The set rotating speed is specifically the minimum rotating speed of the motor which is preset and can be required when the current and the power of the compressor are smaller than or equal to the corresponding set threshold value under the set capacity. The rotating speed of the motor is greater than or equal to the set rotating speed, which indicates that after the four-way valve operates at the target valve position, the current and the power of the compressor are not too large even if the compressor is compressed at the set capacity, so that the reduction of the energy consumption of the compressor at the starting stage is further ensured.
In this embodiment, after the rotational speed of the compressor is increased after the compressor is started, such as a period of time delay, the fan is started first, and then the four-way valve is controlled to operate at the target valve position in a delayed mode.
Specifically, in this embodiment, if the timing duration reaches the first set duration, the discharge temperature of the compressor is obtained; determining a target rotating speed of the fan according to the exhaust temperature of the compressor; and controlling the fan to be started according to the target rotating speed. The discharge temperature may be obtained by acquiring data detected by a temperature sensor provided at the discharge port of the compressor. Different exhaust temperatures correspond to different fan rotating speeds, and the larger the exhaust temperature is, the larger the corresponding target rotating speed of the fan can be. The correspondence relationship between the exhaust temperature and the target rotation speed may be set in advance, and may be a calculation relationship, a mapping relationship, or the like. Based on the corresponding relation, the target rotating speed corresponding to the exhaust temperature at present can be determined. The running rotating speed of the fan is determined based on the exhaust temperature of the compressor, and the current output capacity of the compressor is reflected due to the exhaust temperature, so that the running rotating speed of the fan is matched with the output capacity of the compressor, the four-way valve can be switched to a target valve position accurately under the regulation effect of the fan, and the performance of the air conditioner in the starting stage is further improved.
Further, based on any of the above embodiments, another embodiment of the control method of the air conditioner of the present application is provided. In this embodiment, the air conditioner further includes a valve disposed in the pressure signal assembly, and the control method of the air conditioner further includes:
and step S01, controlling the valve to be opened when the compressor is started.
Specifically, when the compressor is started, the valve can be controlled to be opened simultaneously except for starting timing and controlling the fan and the four-way valve to be kept in a closed state, so that the compressor can be compressed in a small capacity under the action of the pressure signal assembly in the starting stage.
Based on the above step S01, after the step S20, the method further includes:
step S30, if the timing duration is greater than or equal to a third set duration, controlling the valve to close; wherein the third set duration is greater than the first set duration.
Specifically, fig. 6 is a control timing sequence of the compressor, the valve of the pressure signal assembly, the fan, and the four-way valve according to the embodiment of the present invention, where t1 is a first set time period, t2 is a second set time period, and t3 is a third set time period. Referring to fig. 6, when the fan is turned on and the four-way valve is sequentially controlled to operate at the target valve position, the third set time period is longer than the second set time period, that is, when the air conditioner enters a normal refrigerant cycle after the fan is turned on and the four-way valve operates at the target valve position, the control valve is closed.
The third set time period may be set according to specific situations, and may be a preset parameter, a parameter determined based on the actual operation condition of the air conditioner, or a parameter determined based on the preset interval time period and the first set time period or the second set time period. Specifically, in this embodiment, the third set time duration is determined according to the second set time duration and the set time interval, and a time interval between the third set time duration and the second set time duration is used as the third set time duration, so that after the four-way valve is switched to the target valve position, the valve of the pressure signal assembly is closed after the refrigerant circulation system enters a stable state.
After the valve of the pressure signal assembly is closed, the capacity of the compressor is switched from the first capacity to the set capacity.
Based on this, in this embodiment, the varactor function of pressure signal subassembly is opened at the start-up stage of compressor to thereby realize realizing the low capacity compression of compressor thereby reducing the energy consumption through the cooperation of fan and four-way valve at the compressor start-up stage. And the valve is closed after the fan is started and the four-way valve is switched to a target valve position, the capacity switching part changes the position (such as switching from the position of opening the bypass pipeline to the position of closing the bypass pipeline) under the action of pressure difference when the four-way valve runs at the target valve position, the capacity of the compressor is changed from the first capacity to the set capacity, the compressor enters a full load state, the valve is closed on the basis, the compression capacity of the compressor can be prevented from being influenced by a pressure signal between the four-way valve and the throttling device on the basis of normal refrigerant circulation of the air conditioning system, and the heat exchange output effect of the air conditioner after the air conditioner is started is ensured.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where a control program of an air conditioner is stored on the computer-readable storage medium, and when the control program of the air conditioner is executed by a processor, the relevant steps of any embodiment of the above control method of the air conditioner are implemented.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (14)

1. The control method of the air conditioner is characterized in that the air conditioner comprises a fan, a refrigerant circulation loop and a pressure signal assembly, the refrigerant circulation loop comprises a compressor, a four-way valve and a throttling device which are sequentially connected, the pressure signal assembly is used for communicating a refrigerant pipeline between the four-way valve and the throttling device with the compressor, the pressure signal assembly is used for triggering the compressor to operate at a first capacity when a measuring point pressure is located in a set pressure interval, the measuring point pressure is the pressure of one end, far away from the compressor, of the pressure signal assembly, and the first capacity is smaller than the set capacity of the compressor; the control method of the air conditioner comprises the following steps:
starting timing when a compressor is started, controlling the fan to be closed and controlling the four-way valve to set a valve position to operate so as to enable the pressure of the measuring point to be within the set pressure interval;
and if the timing duration reaches a first set duration, controlling the fan to be started and controlling the four-way valve to operate at a target valve position, wherein the target valve position is a valve position corresponding to the heat exchange mode of the current operation of the air conditioner.
2. The method as claimed in claim 1, wherein the measuring pressure corresponding to the target valve position is outside the set pressure range, and the step of controlling the fan to be turned on and the four-way valve to operate at the target valve position if the timing duration reaches a first set duration comprises:
if the timing duration reaches the first set duration, controlling the fan to be started;
if the timing duration is greater than or equal to a second set duration, controlling the four-way valve to operate at the target valve position;
wherein the second set duration is greater than the first set duration.
3. The control method of an air conditioner according to claim 2, wherein the value interval of the first set time period is [20s, 40s ]; and/or the presence of a gas in the atmosphere,
and the interval duration between the second set duration and the first set duration is in a value interval of [3s, 20s ].
4. The method as claimed in claim 2, wherein the step of controlling the fan to be turned on if the timed period reaches the first set period comprises:
if the timing duration reaches the first set duration, acquiring the exhaust temperature of the compressor;
determining a target rotating speed of the fan according to the exhaust temperature of the compressor;
and controlling the fan to be started according to the target rotating speed.
5. The method of controlling an air conditioner according to claim 2, wherein the step of controlling the four-way valve to operate at the target valve position is preceded by the step of:
if the timing duration is greater than or equal to the second set duration, acquiring the motor speed of the compressor;
and if the rotating speed of the motor is greater than or equal to the set rotating speed, executing the step of controlling the four-way valve to operate at the target valve position.
6. The method as claimed in claim 2, wherein before the step of controlling the fan to be turned on and the four-way valve to operate at the target valve position if the timed period reaches the first set period, the method further comprises:
acquiring the outdoor environment temperature;
determining the first set time according to the outdoor environment temperature;
the first set time period is in an increasing trend along with the reduction of the outdoor environment temperature.
7. The method of controlling an air conditioner according to any one of claims 2 to 6, wherein the air conditioner further includes a valve provided to the pressure signal assembly, the method further comprising:
and when the compressor is started, controlling the valve to be opened.
8. The method as claimed in claim 7, wherein after the step of controlling the fan to be turned on and the four-way valve to operate at the target valve position if the timed period reaches the first set period, the method further comprises:
if the timing duration is greater than or equal to a third set duration, controlling the valve to be closed; wherein the third set duration is greater than the first set duration.
9. The control method of an air conditioner according to claim 8, wherein the third set time period is longer than the second set time period.
10. A control device, characterized in that the control device comprises: a memory, a processor, and a control program of an air conditioner stored on the memory and executable on the processor, the control program of the air conditioner implementing the steps of the control method of the air conditioner as claimed in any one of claims 1 to 9 when executed by the processor.
11. An air conditioner, characterized in that, the air conditioner comprises a fan, a refrigerant circulation loop, a pressure signal component and the control device of claim 10;
the refrigerant circulating loop comprises a compressor, a four-way valve and a throttling device which are sequentially connected, and the pressure signal assembly is used for communicating a refrigerant pipeline between the four-way valve and the throttling device with the compressor;
the pressure signal assembly is used for triggering the compressor to operate at a first capacity when the pressure of a measuring point is in a set pressure interval, the pressure of the measuring point is the pressure of one end, far away from the compressor, of the pressure signal assembly, and the first capacity is smaller than the set capacity of the compressor;
the compressor, the four-way valve and the fan are all connected with the control device.
12. The air conditioner of claim 11, wherein the pressure signal assembly comprises:
one end of the pressure transmission pipe is communicated with a compression cylinder of the compressor, and a refrigerant pipeline between the four-way valve and the throttling device is communicated with the other end of the pressure transmission pipe;
the capacity switching piece is movably arranged at one end of the pressure transmission pipe communicated with the compression cylinder;
the capacity switching member has a first position and a second position, the capacity switching member is located at the first position when the gauge pressure is within the set pressure interval, and the capacity switching member is located at the second position when the gauge pressure is outside the set pressure interval;
when the capacity switching member is located at the first position, the compression capacity of the compression cylinder is the first capacity, and when the capacity switching member is located at the second position, the compression capacity of the compression cylinder is the set capacity.
13. The air conditioner as claimed in claim 12, further comprising a first heat exchanger, wherein the first heat exchanger is disposed on a refrigerant pipeline between the four-way valve and the throttling device, and the refrigerant pipeline between the four-way valve and the first heat exchanger is communicated with an end of the pressure transmission pipe away from the compression cylinder.
14. A computer-readable storage medium, characterized in that a control program of an air conditioner is stored thereon, which when executed by a processor implements the steps of the control method of the air conditioner according to any one of claims 1 to 9.
CN202011423292.1A 2020-12-08 2020-12-08 Air conditioner, control method thereof, control device thereof and computer readable storage medium Active CN114608156B (en)

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