CN106839332B - Linkage control method, linkage control device and multi-connected air conditioner - Google Patents

Linkage control method, linkage control device and multi-connected air conditioner Download PDF

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Publication number
CN106839332B
CN106839332B CN201710127657.8A CN201710127657A CN106839332B CN 106839332 B CN106839332 B CN 106839332B CN 201710127657 A CN201710127657 A CN 201710127657A CN 106839332 B CN106839332 B CN 106839332B
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China
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trigger instruction
shutdown
preset
instruction
air conditioner
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CN106839332A (en
Inventor
杨元涛
许永锋
熊美兵
郭剑
黄文�
李冠村
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • 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
    • F24F11/62—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
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/20—Feedback from users

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

Abstract

The invention provides a linkage control method, a linkage control device and a multi-connected air conditioner, wherein the linkage control method comprises the following steps: when the plurality of indoor units stop operating according to the shutdown trigger instruction, detecting whether the shutdown trigger instruction belongs to a preset trigger instruction; and when the shutdown trigger instruction is detected to belong to a preset trigger instruction, switching the multi-connected air conditioner to a standby mode, wherein in the standby mode, the compressor of the multi-connected air conditioner continues to operate. Through the technical scheme of the invention, on one hand, the service life of the compressor is prolonged, and on the other hand, the energy consumption is saved.

Description

Linkage control method, linkage control device and multi-connected air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a linkage control method, a linkage control device and a multi-connected air conditioner.
Background
In the related art, the multi-connected air conditioner has a wider and wider application range, the operation of the compressor is usually controlled by the switch of the indoor unit or the indoor set operation temperature, the indoor environment temperature easily reaches the preset operation temperature in places with smaller office space or better building heat preservation effect, and the compressor is usually turned off to save energy consumption if all the indoor units are turned off or the indoor environment temperature reaches the preset operation temperature, but the following defects exist:
when the indoor unit is started or the indoor environment temperature deviates from the preset operation temperature, the compressor needs to be started again, so that the compressor is started and stopped frequently, the service life of the compressor is shortened, meanwhile, the compressor operates again for a long time with certain frequency, the comfort level of a user is reduced, and the compressor can be started and stopped to generate larger energy consumption.
Disclosure of Invention
The present invention is based on at least one of the above technical problems, and provides a new solution, in which a shutdown trigger instruction for stopping operation of a plurality of indoor units is determined when the plurality of indoor units stop operating, and it is detected whether the shutdown trigger instruction belongs to a preset trigger instruction, so as to switch the multi-connected air conditioner to a standby mode when it is detected that the shutdown trigger instruction belongs to the preset trigger instruction, and in the standby mode, a compressor of the multi-connected air conditioner can continue to operate.
In view of this, the present invention provides a linkage control method, including: when the plurality of indoor units stop operating according to the shutdown trigger instruction, detecting whether the shutdown trigger instruction belongs to a preset trigger instruction; and when the shutdown trigger instruction is detected to belong to a preset trigger instruction, switching the multi-connected air conditioner to a standby mode, wherein in the standby mode, the compressor of the multi-connected air conditioner continues to operate.
In the technical scheme, the shutdown trigger instruction for stopping the operation of the indoor units is determined when the indoor units stop operating, whether the shutdown trigger instruction belongs to the preset trigger instruction is detected, and the multi-connected air conditioner is switched to the standby mode when the shutdown trigger instruction belongs to the preset trigger instruction is detected.
Specifically, the preset trigger instruction may include a shutdown instruction when the indoor ambient temperature reaches the preset operating temperature, a shutdown instruction when there is a probability of misoperation, and the like.
And the plurality of indoor units stop running according to the shutdown trigger instruction, and mainly mean that fans and heat exchangers of the indoor units stop running.
In the foregoing technical solution, preferably, when it is detected that the shutdown trigger instruction belongs to the preset trigger instruction, the method switches the multi-split air conditioner to the standby mode, and specifically includes the following steps: when the shutdown trigger instruction is detected to belong to a preset trigger instruction, controlling a fan of the outdoor unit to continue to operate; and/or controlling the opening degree of a throttling component of the outdoor unit to be reduced to a specified opening degree; and/or controlling and adjusting the working frequency of the compressor to a preset initial range so that the discharge pressure of the compressor is within a preset pressure range.
According to the technical scheme, when the shutdown trigger instruction is detected to belong to the preset trigger instruction, the operation state of the device on the outer side is controlled and adjusted, specifically, the fan of the outdoor unit is controlled to continue to operate, and/or the opening degree of the throttling component of the outdoor unit is reduced to the designated opening degree, and/or the working frequency of the compressor is controlled to be adjusted to the preset initial range, so that the exhaust pressure of the compressor is in the preset pressure range, the state of the air conditioner device on the outdoor side is adjusted in the standby mode, and the energy consumption is further saved.
The throttling component is an electronic expansion valve, the electronic expansion valve comprises an electric expansion valve and an electromagnetic expansion valve, and the liquid supply amount of the heat exchanger is adjusted by controlling the opening degree.
Specifically, when the multi-connected air conditioner is detected to enter a standby mode, a fan of a heat exchanger of the outdoor unit continues to operate, a throttling component of the outdoor unit keeps a certain flow, a pressure sensor detects the exhaust pressure of the compressor to maintain the exhaust pressure P between 2.6MPa and less than or equal to P and less than or equal to 3.0MPa, when the exhaust pressure P is greater than 3.0MPa, the working frequency of the compressor is controlled to be reduced, and when the exhaust pressure P is less than 2.6MPa, the working frequency of the compressor is controlled to be increased.
The working efficiency of the compressor is characterized by the utilization degree of the energy transmitted to the gas by the compressor, and the higher the utilization degree is, the higher the working efficiency of the compressor is.
In any one of the above technical solutions, preferably, when it is detected that the shutdown trigger instruction belongs to the preset trigger instruction, the method switches the multi-connected air conditioner to the standby mode, and specifically includes the following steps: controlling the throttle parts of part of indoor units to be closed; and controlling and adjusting the opening degree of the throttling part of the other part of the indoor units to be reduced.
According to the technical scheme, when the shutdown trigger instruction is detected to belong to the preset trigger instruction, the throttling parts of the indoor units are controlled to be closed, and the opening degree of the throttling part of the other indoor unit is controlled to be reduced, so that the opening degree of the throttling part is adjusted outside the stop operation of the fan and the heat exchanger of the indoor unit, and the probability of invalid use of the refrigerant is reduced.
Specifically, for example, the opening degree of a part of the throttle members is reduced to 1/5 of the total opening degree, and the other part of the throttle members is closed.
In any one of the above technical solutions, preferably, when the plurality of indoor units stop operating according to the shutdown trigger instruction, detecting whether the shutdown trigger instruction belongs to a preset trigger instruction, specifically includes the following steps: when the plurality of indoor units are detected to stop operating due to the fact that the environment temperatures of the plurality of indoor units reach the corresponding preset operating temperatures, the shutdown trigger instruction is determined to belong to the preset trigger instruction, and the standby mode is switched.
In the technical scheme, when the shutdown trigger instruction generated by the plurality of indoor units due to the fact that the plurality of indoor environment temperatures reach the preset operation temperature is detected, the shutdown trigger instruction is determined to belong to the preset trigger instruction, so that the standby mode is entered when the indoor environment temperatures of the plurality of indoor units reach the preset operation temperature, after the indoor environment temperatures deviate from the preset operation temperature, the purpose of readjusting to the preset operation temperature is achieved only by adjusting the opening degree of a throttling component of the outdoor unit and the working frequency of the compressor, on one hand, frequent starting and stopping of the compressor is not needed, the service life of the compressor is prolonged, on the other hand, the duration of the compressor rerunning to the specified working frequency is shortened, and the use experience of a user is improved.
In any one of the above technical solutions, preferably, when the plurality of indoor units stop operating according to the shutdown trigger instruction, detecting whether the shutdown trigger instruction belongs to a preset trigger instruction, specifically includes the following steps: when detecting that the plurality of indoor units stop operating according to the forced shutdown instruction, determining a transmission source of the shutdown instruction; when the emission source is a wired emission source, the shutdown trigger instruction is determined to belong to a preset trigger instruction so as to switch to a standby mode.
In the technical scheme, when the situation that the operation of a plurality of indoor units stops according to the forced shutdown instruction is detected, the emission source of the shutdown instruction is determined, when the emission source is detected to be a wired emission source, namely the forced shutdown instruction is sent through wire control or centralized control, in order to prevent misoperation, the shutdown trigger instruction can be determined to belong to a preset trigger instruction, so that the standby mode is switched, and whether the shutdown trigger instruction is misoperation can be determined by detecting whether a subsequent operation instruction of a user is received or not in the standby mode, so that the probability of frequent startup of a compressor caused by misoperation shutdown is reduced, and the energy waste caused by misoperation is further reduced.
In any one of the above technical solutions, preferably, the method further includes: and when the emission source is a wireless emission source, the multi-connected air conditioner is turned off.
In the technical scheme, when the emission source is determined to be the wireless emission source, the forced shutdown signal is sent by the remote controller, and at the moment, the situation that the user actively intends to shutdown can be determined, and the shutdown operation is directly executed to shut down the whole multi-connected air conditioner.
In any one of the above technical solutions, preferably, the method further includes: detecting whether a starting-up instruction is received within a preset time period from the moment of switching to the standby mode; and when detecting that the starting instruction is not received, closing the multi-connected air conditioner.
In the technical scheme, whether a power-on instruction is received or not is detected within a preset time period from the moment of switching to a standby mode according to a forced power-off instruction of a wired emission source, when the power-on instruction is detected to be received, the fact that the received forced power-off instruction is possible to be in misoperation is indicated, when the power-on instruction is not detected to be received, the fact that the received forced power-off instruction is not in misoperation is indicated, and after the preset time period, the multi-connected air conditioner is controlled to be closed, so that the power-off operation of the forced power-off instruction of the wired emission source is achieved under the condition that the misoperation is not caused.
Specifically, the preset time period may be set according to actual needs, for example, set to 3 minutes or 5 minutes, etc., so as to reduce energy consumption.
According to the second aspect of the present invention, there is also provided a linkage control apparatus including: the detection unit is used for detecting whether the shutdown trigger instruction belongs to a preset trigger instruction or not when the plurality of indoor units stop running according to the shutdown trigger instruction; and the switching unit is used for switching the multi-connected air conditioner to a standby mode when the shutdown trigger instruction is detected to belong to a preset trigger instruction, wherein in the standby mode, the compressor of the multi-connected air conditioner continues to run.
In the technical scheme, the shutdown trigger instruction for stopping the operation of the indoor units is determined when the indoor units stop operating, whether the shutdown trigger instruction belongs to the preset trigger instruction is detected, and the multi-connected air conditioner is switched to the standby mode when the shutdown trigger instruction belongs to the preset trigger instruction is detected.
Specifically, the preset trigger instruction may include a shutdown instruction when the indoor ambient temperature reaches the preset operating temperature, a shutdown instruction when there is a probability of misoperation, and the like.
And the plurality of indoor units stop running according to the shutdown trigger instruction, and mainly mean that fans and heat exchangers of the indoor units stop running.
In the above technical solution, preferably, the method further includes: the control unit is used for controlling the fan of the outdoor unit to continue to operate when the shutdown trigger instruction is detected to belong to a preset trigger instruction; an adjusting unit: controlling and adjusting the opening degree of a throttling component of the outdoor unit to be reduced to a specified opening degree; the regulated unit is further configured to: and controlling and adjusting the working frequency of the compressor to a preset initial range so that the exhaust pressure of the compressor is within a preset pressure range.
According to the technical scheme, when the shutdown trigger instruction is detected to belong to the preset trigger instruction, the operation state of the device on the outer side is controlled and adjusted, specifically, the fan of the outdoor unit is controlled to continue to operate, and/or the opening degree of the throttling component of the outdoor unit is reduced to the designated opening degree, and/or the working frequency of the compressor is controlled to be adjusted to the preset initial range, so that the exhaust pressure of the compressor is in the preset pressure range, the state of the air conditioner device on the outdoor side is adjusted in the standby mode, and the energy consumption is further saved.
The throttling component is an electronic expansion valve, the electronic expansion valve comprises an electric expansion valve and an electromagnetic expansion valve, and the liquid supply amount of the heat exchanger is adjusted by controlling the opening degree.
Specifically, when the multi-connected air conditioner is detected to enter a standby mode, a fan of a heat exchanger of the outdoor unit continues to operate, a throttling component of the outdoor unit keeps a certain flow, a pressure sensor detects the exhaust pressure of the compressor to maintain the exhaust pressure P between 2.6MPa and less than or equal to P and less than or equal to 3.0MPa, when the exhaust pressure P is greater than 3.0MPa, the working frequency of the compressor is controlled to be reduced, and when the exhaust pressure P is less than 2.6MPa, the working frequency of the compressor is controlled to be increased.
The working efficiency of the compressor is characterized by the utilization degree of the energy transmitted to the gas by the compressor, and the higher the utilization degree is, the higher the working efficiency of the compressor is.
In any one of the above technical solutions, preferably, the method further includes: a first closing unit: controlling the throttle parts of part of indoor units to be closed; the adjusting unit is also used for: and controlling and adjusting the opening degree of the throttling part of the other part of indoor units to be reduced.
According to the technical scheme, when the shutdown trigger instruction is detected to belong to the preset trigger instruction, the throttling parts of the indoor units are controlled to be closed, and the opening degree of the throttling part of the other indoor unit is controlled to be reduced, so that the opening degree of the throttling part is adjusted outside the stop operation of the fan and the heat exchanger of the indoor unit, and the probability of invalid use of the refrigerant is reduced.
Specifically, for example, the opening degree of a part of the throttle members is reduced to 1/5 of the total opening degree, and the other part of the throttle members is closed.
In any one of the above technical solutions, preferably, the method further includes: and the determining unit is used for determining that the shutdown trigger instruction belongs to the preset trigger instruction to switch to the standby mode when detecting that the plurality of indoor units stop running due to the fact that the environment temperatures in the plurality of rooms reach the corresponding preset running temperatures.
In the technical scheme, when the shutdown trigger instruction generated by the plurality of indoor units due to the fact that the plurality of indoor environment temperatures reach the preset operation temperature is detected, the shutdown trigger instruction is determined to belong to the preset trigger instruction, so that the standby mode is entered when the indoor environment temperatures of the plurality of indoor units reach the preset operation temperature, after the indoor environment temperatures deviate from the preset operation temperature, the purpose of readjusting to the preset operation temperature is achieved only by adjusting the opening degree of a throttling component of the outdoor unit and the working frequency of the compressor, on one hand, frequent starting and stopping of the compressor is not needed, the service life of the compressor is prolonged, on the other hand, the duration of the compressor rerunning to the specified working frequency is shortened, and the use experience of a user is improved.
In any one of the above technical solutions, preferably, the determining unit is further configured to: when detecting that the plurality of indoor units stop operating according to the forced shutdown instruction, determining a transmission source of the shutdown instruction; the determination unit is further configured to: when the emission source is a wired emission source, the shutdown trigger instruction is determined to belong to a preset trigger instruction so as to switch to a standby mode.
In the technical scheme, when the situation that the operation of a plurality of indoor units stops according to the forced shutdown instruction is detected, the emission source of the shutdown instruction is determined, when the emission source is detected to be a wired emission source, namely the forced shutdown instruction is sent through wire control or centralized control, in order to prevent misoperation, the shutdown trigger instruction can be determined to belong to a preset trigger instruction, so that the standby mode is switched, and whether the shutdown trigger instruction is misoperation can be determined by detecting whether a subsequent operation instruction of a user is received or not in the standby mode, so that the probability of frequent startup of a compressor caused by misoperation shutdown is reduced, and the energy waste caused by misoperation is further reduced.
In any one of the above technical solutions, preferably, the method further includes: and the second closing unit is used for closing the multi-connected air conditioner when the emission source is a wireless emission source.
In the technical scheme, when the emission source is determined to be the wireless emission source, the forced shutdown signal is sent by the remote controller, and at the moment, the situation that the user actively intends to shutdown can be determined, and the shutdown operation is directly executed to shut down the whole multi-connected air conditioner.
In any one of the above technical solutions, preferably, the detection unit is further configured to: detecting whether a starting-up instruction is received within a preset time period from the moment of switching to the standby mode; the second closing unit is further configured to: and when detecting that the starting instruction is not received, closing the multi-connected air conditioner.
In the technical scheme, whether a power-on instruction is received or not is detected within a preset time period from the moment of switching to a standby mode according to a forced power-off instruction of a wired emission source, when the power-on instruction is detected to be received, the fact that the received forced power-off instruction is possible to be in misoperation is indicated, when the power-on instruction is not detected to be received, the fact that the received forced power-off instruction is not in misoperation is indicated, and after the preset time period, the multi-connected air conditioner is controlled to be closed, so that the power-off operation of the forced power-off instruction of the wired emission source is achieved under the condition that the misoperation is not caused.
Specifically, the preset time period may be set according to actual needs, for example, set to 3 minutes or 5 minutes, etc., so as to reduce energy consumption.
According to a third aspect of the present invention, a multiple air conditioner is further provided, which includes the linkage control device according to any one of the above technical solutions, and therefore the technical effects of the multiple air conditioner including the linkage control device according to any one of the above technical solutions are not described herein again.
According to the technical scheme, the shutdown trigger instruction for stopping the operation of the indoor units is determined when the indoor units stop operating, whether the shutdown trigger instruction belongs to the preset trigger instruction or not is detected, the multi-connected air conditioner is switched to the standby mode when the shutdown trigger instruction belongs to the preset trigger instruction is detected, and the compressors of the multi-connected air conditioner can continue to operate in the standby mode.
Drawings
FIG. 1 shows a schematic flow diagram of a coordinated control method according to one embodiment of the invention;
FIG. 2 shows a schematic block diagram of a coordinated control device according to an embodiment of the invention;
FIG. 3 illustrates a schematic block diagram of a multi-connected air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic structural view illustrating a multi-connected air conditioner according to an embodiment of the present invention;
FIG. 5 shows a schematic flow diagram of a coordinated control method according to another embodiment of the invention;
fig. 6 shows a schematic flow chart of a linkage control method according to yet another embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced using third parties different from those described herein, and thus, the scope of the present invention is not limited by the specific embodiments disclosed below.
FIG. 1 shows a schematic flow diagram of a coordinated control method according to one embodiment of the invention.
As shown in fig. 1, a linkage control method according to an embodiment of the present invention includes: 102, when the plurality of indoor units stop operating according to the shutdown trigger instruction, detecting whether the shutdown trigger instruction belongs to a preset trigger instruction; and 104, switching the multi-connected air conditioner to a standby mode when the shutdown trigger instruction is detected to belong to a preset trigger instruction, wherein in the standby mode, the compressor of the multi-connected air conditioner continues to operate.
In the technical scheme, the shutdown trigger instruction for stopping the operation of the indoor units is determined when the indoor units stop operating, whether the shutdown trigger instruction belongs to the preset trigger instruction is detected, and the multi-connected air conditioner is switched to the standby mode when the shutdown trigger instruction belongs to the preset trigger instruction is detected.
Specifically, the preset trigger instruction may include a shutdown instruction when the indoor ambient temperature reaches the preset operating temperature, a shutdown instruction when there is a probability of misoperation, and the like.
And the plurality of indoor units stop running according to the shutdown trigger instruction, and mainly mean that fans and heat exchangers of the indoor units stop running.
In the foregoing technical solution, preferably, when it is detected that the shutdown trigger instruction belongs to the preset trigger instruction, the method switches the multi-split air conditioner to the standby mode, and specifically includes the following steps: when the shutdown trigger instruction is detected to belong to a preset trigger instruction, controlling a fan of the outdoor unit to continue to operate; and/or controlling the opening degree of a throttling component of the outdoor unit to be reduced to a specified opening degree; and/or controlling and adjusting the working frequency of the compressor to a preset initial range so that the discharge pressure of the compressor is within a preset pressure range.
According to the technical scheme, when the shutdown trigger instruction is detected to belong to the preset trigger instruction, the operation state of the device on the outer side is controlled and adjusted, specifically, the fan of the outdoor unit is controlled to continue to operate, and/or the opening degree of the throttling component of the outdoor unit is reduced to the designated opening degree, and/or the working frequency of the compressor is controlled to be adjusted to the preset initial range, so that the exhaust pressure of the compressor is in the preset pressure range, the state of the air conditioner device on the outdoor side is adjusted in the standby mode, and the energy consumption is further saved.
The throttling component is an electronic expansion valve, the electronic expansion valve comprises an electric expansion valve and an electromagnetic expansion valve, and the liquid supply amount of the heat exchanger is adjusted by controlling the opening degree.
Specifically, when the multi-connected air conditioner is detected to enter a standby mode, a fan of a heat exchanger of the outdoor unit continues to operate, a throttling component of the outdoor unit keeps a certain flow, a pressure sensor detects the exhaust pressure of the compressor to maintain the exhaust pressure P between 2.6MPa and less than or equal to P and less than or equal to 3.0MPa, when the exhaust pressure P is greater than 3.0MPa, the working frequency of the compressor is controlled to be reduced, and when the exhaust pressure P is less than 2.6MPa, the working frequency of the compressor is controlled to be increased.
The working efficiency of the compressor is characterized by the utilization degree of the energy transmitted to the gas by the compressor, and the higher the utilization degree is, the higher the working efficiency of the compressor is.
In any one of the above technical solutions, preferably, when it is detected that the shutdown trigger instruction belongs to the preset trigger instruction, the method switches the multi-connected air conditioner to the standby mode, and specifically includes the following steps: controlling the throttle parts of part of indoor units to be closed; and controlling and adjusting the opening degree of the throttling part of the other part of the indoor units to be reduced.
According to the technical scheme, when the shutdown trigger instruction is detected to belong to the preset trigger instruction, the throttling parts of the indoor units are controlled to be closed, and the opening degree of the throttling part of the other indoor unit is controlled to be reduced, so that the opening degree of the throttling part is adjusted outside the stop operation of the fan and the heat exchanger of the indoor unit, and the probability of invalid use of the refrigerant is reduced.
Specifically, for example, the opening degree of a part of the throttle members is reduced to 1/5 of the total opening degree, and the other part of the throttle members is closed.
In any one of the above technical solutions, preferably, when the plurality of indoor units stop operating according to the shutdown trigger instruction, detecting whether the shutdown trigger instruction belongs to a preset trigger instruction, specifically includes the following steps: when the plurality of indoor units are detected to stop operating due to the fact that the environment temperatures of the plurality of indoor units reach the corresponding preset operating temperatures, the shutdown trigger instruction is determined to belong to the preset trigger instruction, and the standby mode is switched.
In the technical scheme, when the shutdown trigger instruction generated by the plurality of indoor units due to the fact that the plurality of indoor environment temperatures reach the preset operation temperature is detected, the shutdown trigger instruction is determined to belong to the preset trigger instruction, so that the standby mode is entered when the indoor environment temperatures of the plurality of indoor units reach the preset operation temperature, after the indoor environment temperatures deviate from the preset operation temperature, the purpose of readjusting to the preset operation temperature is achieved only by adjusting the opening degree of a throttling component of the outdoor unit and the working frequency of the compressor, on one hand, frequent starting and stopping of the compressor is not needed, the service life of the compressor is prolonged, on the other hand, the duration of the compressor rerunning to the specified working frequency is shortened, and the use experience of a user is improved.
In any one of the above technical solutions, preferably, when the plurality of indoor units stop operating according to the shutdown trigger instruction, detecting whether the shutdown trigger instruction belongs to a preset trigger instruction, specifically includes the following steps: when detecting that the plurality of indoor units stop operating according to the forced shutdown instruction, determining a transmission source of the shutdown instruction; when the emission source is a wired emission source, the shutdown trigger instruction is determined to belong to a preset trigger instruction so as to switch to a standby mode.
In the technical scheme, when the situation that the operation of a plurality of indoor units stops according to the forced shutdown instruction is detected, the emission source of the shutdown instruction is determined, when the emission source is detected to be a wired emission source, namely the forced shutdown instruction is sent through wire control or centralized control, in order to prevent misoperation, the shutdown trigger instruction can be determined to belong to a preset trigger instruction, so that the standby mode is switched, and whether the shutdown trigger instruction is misoperation can be determined by detecting whether a subsequent operation instruction of a user is received or not in the standby mode, so that the probability of frequent startup of a compressor caused by misoperation shutdown is reduced, and the energy waste caused by misoperation is further reduced.
In any one of the above technical solutions, preferably, the method further includes: and when the emission source is a wireless emission source, the multi-connected air conditioner is turned off.
In the technical scheme, when the emission source is determined to be the wireless emission source, the forced shutdown signal is sent by the remote controller, and at the moment, the situation that the user actively intends to shutdown can be determined, and the shutdown operation is directly executed to shut down the whole multi-connected air conditioner.
In any one of the above technical solutions, preferably, the method further includes: detecting whether a starting-up instruction is received within a preset time period from the moment of switching to the standby mode; and when detecting that the starting instruction is not received, closing the multi-connected air conditioner.
In the technical scheme, whether a power-on instruction is received or not is detected within a preset time period from the moment of switching to a standby mode according to a forced power-off instruction of a wired emission source, when the power-on instruction is detected to be received, the fact that the received forced power-off instruction is possible to be in misoperation is indicated, when the power-on instruction is not detected to be received, the fact that the received forced power-off instruction is not in misoperation is indicated, and after the preset time period, the multi-connected air conditioner is controlled to be closed, so that the power-off operation of the forced power-off instruction of the wired emission source is achieved under the condition that the misoperation is not caused.
Specifically, the preset time period may be set according to actual needs, for example, set to 3 minutes or 5 minutes, etc., so as to reduce energy consumption.
The steps in the linkage control method can be sequentially adjusted, combined and deleted according to actual needs.
FIG. 2 shows a schematic block diagram of a coordinated control device according to an embodiment of the invention.
As shown in fig. 2, the interlock control apparatus 200 according to the embodiment of the present invention includes: the detecting unit 202 is configured to detect whether the shutdown trigger instruction belongs to a preset trigger instruction when the plurality of indoor units stop operating according to the shutdown trigger instruction; the switching unit 204 is configured to switch the multi-connected air conditioner to a standby mode when it is detected that the shutdown trigger instruction belongs to a preset trigger instruction, where in the standby mode, the compressors of the multi-connected air conditioner continue to operate.
In the technical scheme, the shutdown trigger instruction for stopping the operation of the indoor units is determined when the indoor units stop operating, whether the shutdown trigger instruction belongs to the preset trigger instruction is detected, and the multi-connected air conditioner is switched to the standby mode when the shutdown trigger instruction belongs to the preset trigger instruction is detected.
Specifically, the preset trigger instruction may include a shutdown instruction when the indoor ambient temperature reaches the preset operating temperature, a shutdown instruction when there is a probability of misoperation, and the like.
And the plurality of indoor units stop running according to the shutdown trigger instruction, and mainly mean that fans and heat exchangers of the indoor units stop running.
In the above technical solution, preferably, the method further includes: the control unit 206 is configured to control the fan of the outdoor unit to continue to operate when the shutdown trigger instruction is detected to belong to the preset trigger instruction; the adjusting unit 208: controlling and adjusting the opening degree of a throttling component of the outdoor unit to be reduced to a specified opening degree; the regulated unit 208 is further configured to: and controlling and adjusting the working frequency of the compressor to a preset initial range so that the exhaust pressure of the compressor is within a preset pressure range.
According to the technical scheme, when the shutdown trigger instruction is detected to belong to the preset trigger instruction, the operation state of the device on the outer side is controlled and adjusted, specifically, the fan of the outdoor unit is controlled to continue to operate, and/or the opening degree of the throttling component of the outdoor unit is reduced to the designated opening degree, and/or the working frequency of the compressor is controlled to be adjusted to the preset initial range, so that the exhaust pressure of the compressor is in the preset pressure range, the state of the air conditioner device on the outdoor side is adjusted in the standby mode, and the energy consumption is further saved.
The throttling component is an electronic expansion valve, the electronic expansion valve comprises an electric expansion valve and an electromagnetic expansion valve, and the liquid supply amount of the heat exchanger is adjusted by controlling the opening degree.
Specifically, when the multi-connected air conditioner is detected to enter a standby mode, a fan of a heat exchanger of the outdoor unit continues to operate, a throttling component of the outdoor unit keeps a certain flow, a pressure sensor detects the exhaust pressure of the compressor to maintain the exhaust pressure P between 2.6MPa and less than or equal to P and less than or equal to 3.0MPa, when the exhaust pressure P is greater than 3.0MPa, the working frequency of the compressor is controlled to be reduced, and when the exhaust pressure P is less than 2.6MPa, the working frequency of the compressor is controlled to be increased.
The working efficiency of the compressor is characterized by the utilization degree of the energy transmitted to the gas by the compressor, and the higher the utilization degree is, the higher the working efficiency of the compressor is.
In any one of the above technical solutions, preferably, the method further includes: the first closing unit 210: controlling the throttle parts of part of indoor units to be closed; the adjustment unit 208 is further configured to: and controlling and adjusting the opening degree of the throttling part of the other part of indoor units to be reduced.
According to the technical scheme, when the shutdown trigger instruction is detected to belong to the preset trigger instruction, the throttling parts of the indoor units are controlled to be closed, and the opening degree of the throttling part of the other indoor unit is controlled to be reduced, so that the opening degree of the throttling part is adjusted outside the stop operation of the fan and the heat exchanger of the indoor unit, and the probability of invalid use of the refrigerant is reduced.
Specifically, for example, the opening degree of a part of the throttle members is reduced to 1/5 of the total opening degree, and the other part of the throttle members is closed.
In any one of the above technical solutions, preferably, the method further includes: a determining unit 212, configured to determine that the shutdown trigger instruction belongs to a preset trigger instruction to switch to the standby mode when it is detected that the plurality of indoor units stop operating due to the ambient temperatures in the plurality of rooms reaching the corresponding preset operating temperatures.
In the technical scheme, when the shutdown trigger instruction generated by the plurality of indoor units due to the fact that the plurality of indoor environment temperatures reach the preset operation temperature is detected, the shutdown trigger instruction is determined to belong to the preset trigger instruction, so that the standby mode is entered when the indoor environment temperatures of the plurality of indoor units reach the preset operation temperature, after the indoor environment temperatures deviate from the preset operation temperature, the purpose of readjusting to the preset operation temperature is achieved only by adjusting the opening degree of a throttling component of the outdoor unit and the working frequency of the compressor, on one hand, frequent starting and stopping of the compressor is not needed, the service life of the compressor is prolonged, on the other hand, the duration of the compressor rerunning to the specified working frequency is shortened, and the use experience of a user is improved.
In any of the above technical solutions, preferably, the determining unit 212 is further configured to: when detecting that the plurality of indoor units stop operating according to the forced shutdown instruction, determining a transmission source of the shutdown instruction; the determination unit 212 is further configured to: when the emission source is a wired emission source, the shutdown trigger instruction is determined to belong to a preset trigger instruction so as to switch to a standby mode.
In the technical scheme, when the situation that the operation of a plurality of indoor units stops according to the forced shutdown instruction is detected, the emission source of the shutdown instruction is determined, when the emission source is detected to be a wired emission source, namely the forced shutdown instruction is sent through wire control or centralized control, in order to prevent misoperation, the shutdown trigger instruction can be determined to belong to a preset trigger instruction, so that the standby mode is switched, and whether the shutdown trigger instruction is misoperation can be determined by detecting whether a subsequent operation instruction of a user is received or not in the standby mode, so that the probability of frequent startup of a compressor caused by misoperation shutdown is reduced, and the energy waste caused by misoperation is further reduced.
In any one of the above technical solutions, preferably, the method further includes: and a second turning-off unit 214 for turning off the multi-connected air conditioner when the transmission source is a wireless transmission source.
In the technical scheme, when the emission source is determined to be the wireless emission source, the forced shutdown signal is sent by the remote controller, and at the moment, the situation that the user actively intends to shutdown can be determined, and the shutdown operation is directly executed to shut down the whole multi-connected air conditioner.
In any of the above technical solutions, preferably, the detecting unit 202 is further configured to: detecting whether a starting-up instruction is received within a preset time period from the moment of switching to the standby mode; the second closing unit 214 is further configured to: and when detecting that the starting instruction is not received, closing the multi-connected air conditioner.
In the technical scheme, whether a power-on instruction is received or not is detected within a preset time period from the moment of switching to a standby mode according to a forced power-off instruction of a wired emission source, when the power-on instruction is detected to be received, the fact that the received forced power-off instruction is possible to be in misoperation is indicated, when the power-on instruction is not detected to be received, the fact that the received forced power-off instruction is not in misoperation is indicated, and after the preset time period, the multi-connected air conditioner is controlled to be closed, so that the power-off operation of the forced power-off instruction of the wired emission source is achieved under the condition that the misoperation is not caused.
Specifically, the preset time period may be set according to actual needs, for example, set to 3 minutes or 5 minutes, etc., so as to reduce energy consumption.
Fig. 3 shows a schematic block diagram of a multi-connected air conditioner according to an embodiment of the present invention.
As shown in fig. 3, the multi-connected air conditioner 300 according to the embodiment of the present invention includes the linkage control device 200 according to any one of the above technical solutions, and therefore, the technical effects of the linkage control device 200 according to any one of the above technical solutions are not repeated herein.
As shown in fig. 4, the multi-connected air conditioner according to the embodiment of the present invention includes: the system comprises a compressor 302, a pressure sensor 304, a four-way reversing valve 306, an outdoor heat exchanger 308, a fan 310 of the outdoor heat exchanger, a main electronic expansion valve 312 of an outdoor unit, a low-pressure liquid storage tank 314 and one or more indoor units 41-4 n, wherein 412, 422 and 4n2 are respectively electronic expansion valves of the indoor units, 414, 424 and 4n4 are respectively fans of the indoor units, 416, 426 and 4n6 are respectively heat exchanger components of the indoor units, and 418, 428 and 4n8 are respectively environment temperature sensors of the indoor units.
When all the indoor units are detected to be shut down, for example, after the indoor unit 42 is shut down by heating, the fan 424 of 42 stops running immediately, the electronic expansion valve 422 of the fan is closed, the frequency of the compressor 302 is reduced to a preset initial value, for example, 20Hz, the fan 310 of the outdoor heat exchanger 308 continues to operate, the outdoor main electronic expansion valve 312 keeps a certain flow opening degree, the exhaust pressure P detected by the pressure sensor 304 is maintained between 2.6MPa and P and 3.0MPa, the compressor 302 keeps the current frequency, and when the exhaust pressure P is greater than 3.0MPa, the compressor 302 reduces the frequency; when the exhaust pressure P is less than 2.6MPa, the frequency of the compressor 302 is increased, and when the shutdown time of all the indoor units exceeds T, which can be 5-10 min, the outdoor unit is shut down, the compressor 302 stops running, and the heat exchanger fan 308 of the outdoor unit is closed.
When the environment temperature of all the indoor units is detected to reach the set operation temperature and the indoor units are stopped, for example, after the environment temperature sensor 428 of the indoor unit 42 detects that the environment temperature of the indoor side reaches the set temperature Ts, the fan 424 of the indoor unit 42 stops operating immediately, the electronic expansion valve 422 is closed, the frequency of the compressor is reduced to a certain initial value, for example, 20Hz, the fan 310 of the outdoor unit heat exchanger continues operating, the main electronic expansion valve 312 of the outdoor unit keeps a certain flow opening, the exhaust pressure P detected by the pressure sensor 304 is maintained between 2.6MPa and P and 3.0MPa, the compressor 302 keeps the current frequency, when the exhaust pressure P is greater than 3.0MPa, the compressor 302 reduces the frequency, when the exhaust pressure P is less than 2.6MPa, the compressor 302 increases the frequency, the outdoor unit automatically opens the electronic expansion valve openings of a small number of the indoor units according to the internal, and closing the electronic expansion valves of the other indoor units to enter a standby mode.
The units in the multi-connected air conditioner can be combined, divided and deleted according to actual needs.
The first embodiment is as follows:
fig. 5 shows a schematic flow diagram of a coordinated control method according to another embodiment of the invention.
As shown in fig. 5, a coordinated control method according to another embodiment of the present invention includes: 502, the multi-connected air conditioner is in a running state; step 504, judging whether the ambient temperature of all indoor units reaches the preset operation temperature, if yes, entering step 506, and if no, returning to step 502; step 506, the multi-connected air conditioner is switched to a standby mode, and the compressor of the multi-connected air conditioner continues to operate in the standby mode.
Example two:
fig. 6 shows a schematic flow chart of a linkage control method according to yet another embodiment of the present invention.
As shown in fig. 6, a coordinated control method according to still another embodiment of the present invention includes: step 602, the multi-connected air conditioner is in an operating state; step 604, receiving a forced shutdown instruction; step 606, detecting a source forced shutdown instruction transmitted for a wired transmission source, and entering step 610; step 608, detecting a source forced shutdown command transmitted for the wireless transmission source, and proceeding to step 614; step 610, switching the multi-connected air conditioner to a standby mode, and continuing to operate the compressor of the multi-connected air conditioner in the standby mode; step 612, detecting whether a starting-up instruction is received or not within a preset time period from the moment of switching to the standby mode, if yes, returning to step 602, and if no, entering step 614; and step 614, turning off the multi-connected air conditioner.
The technical scheme of the invention is described in detail with reference to the accompanying drawings, and is characterized in that when a plurality of indoor units stop operating, a shutdown trigger instruction for stopping operating the plurality of indoor units is determined, and whether the shutdown trigger instruction belongs to a preset trigger instruction is detected, so that when the shutdown trigger instruction belongs to the preset trigger instruction, the multi-connected air conditioner is switched to a standby mode, and in the standby mode, a compressor of the multi-connected air conditioner can continue to operate.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. A linkage control method is suitable for a multi-connected air conditioner, the multi-connected air conditioner comprises an outdoor unit and a plurality of indoor units, and the linkage control method is characterized by comprising the following steps:
when the indoor units stop operating according to the shutdown trigger instruction, detecting whether the shutdown trigger instruction belongs to a preset trigger instruction;
when the shutdown trigger instruction is detected to belong to the preset trigger instruction, the multi-connected air conditioner is switched to a standby mode,
wherein, in the standby mode, the compressor of the multi-connected air conditioner continues to operate;
when the plurality of indoor units stop operating according to the shutdown trigger instruction, detecting whether the shutdown trigger instruction belongs to a preset trigger instruction, specifically comprising the following steps:
when the situation that the plurality of indoor units stop operating according to the forced shutdown instruction is detected, determining a transmission source of the shutdown instruction;
and when the emission source is a wired emission source, determining that the shutdown trigger instruction belongs to the preset trigger instruction so as to switch to the standby mode.
2. The linkage control method according to claim 1, wherein when it is detected that the shutdown trigger instruction belongs to the preset trigger instruction, the method switches the multi-connected air conditioner to a standby mode, and specifically comprises the following steps:
when the shutdown trigger instruction is detected to belong to the preset trigger instruction, controlling a fan of the outdoor unit to continue to operate; and/or
Controlling and adjusting the opening degree of a throttling component of the outdoor unit to be reduced to a specified opening degree; and/or
And controlling and adjusting the working frequency of the compressor to a preset initial range so that the discharge pressure of the compressor is within a preset pressure range.
3. The linkage control method according to claim 2, wherein when it is detected that the shutdown trigger instruction belongs to the preset trigger instruction, the multi-connected air conditioner is switched to a standby mode, and specifically the method further comprises the following steps:
controlling the throttle parts of part of the indoor units to be closed; and
and controlling and adjusting the opening degree of the throttling part of the other part of the indoor unit to be reduced.
4. The linkage control method according to any one of claims 1 to 3, wherein when the plurality of indoor units stop operating according to the shutdown trigger instruction, detecting whether the shutdown trigger instruction belongs to a preset trigger instruction specifically includes the following steps:
when the plurality of indoor units are detected to stop operating due to the fact that the environment temperatures in the plurality of rooms reach the corresponding preset operating temperatures, the operation stop trigger instruction is determined to belong to the preset trigger instruction, and the standby mode is switched.
5. The coordinated control method according to claim 1, further comprising:
and when the emission source is a wireless emission source, the multi-connected air conditioner is turned off.
6. The coordinated control method according to claim 1, further comprising:
detecting whether a starting-up instruction is received within a preset time period from the moment of switching to the standby mode;
and when the starting instruction is not received, the multi-connected air conditioner is closed.
7. A linkage control device is suitable for a multi-connected air conditioner, the multi-connected air conditioner comprises an outdoor unit and a plurality of indoor units, and the linkage control device is characterized by comprising:
the detection unit is used for detecting whether the shutdown trigger instruction belongs to a preset trigger instruction or not when the indoor units stop running according to the shutdown trigger instruction;
a switching unit for switching the multi-connected air conditioner to a standby mode when the shutdown trigger instruction is detected to belong to the preset trigger instruction,
wherein, in the standby mode, the compressor of the multi-connected air conditioner continues to operate;
a determination unit: the emission source is used for determining the shutdown instruction when the plurality of indoor units are detected to stop running according to the forced shutdown instruction;
the determination unit is further configured to: and when the emission source is a wired emission source, determining that the shutdown trigger instruction belongs to the preset trigger instruction so as to switch to the standby mode.
8. The coordinated control device according to claim 7, further comprising:
the control unit is used for controlling the fan of the outdoor unit to continue to operate when the shutdown trigger instruction is detected to belong to the preset trigger instruction;
an adjusting unit: controlling and adjusting the opening degree of a throttling component of the outdoor unit to be reduced to a specified opening degree;
the regulated unit is further configured to: and controlling and adjusting the working frequency of the compressor to a preset initial range so that the discharge pressure of the compressor is within a preset pressure range.
9. The coordinated control device according to claim 8, further comprising:
a first closing unit: controlling the throttle parts of part of the indoor units to be closed;
the adjustment unit is further configured to: and controlling and adjusting the opening degree of the throttling part of the other part of the indoor unit to be reduced.
10. The linkage control device according to any one of claims 7 to 9,
the determining unit is used for determining that the shutdown trigger instruction belongs to the preset trigger instruction to switch to the standby mode when detecting that the indoor units stop running due to the fact that the indoor environment temperatures reach the corresponding preset running temperatures.
11. The coordinated control device according to claim 7, further comprising:
and the second closing unit is used for closing the multi-connected air conditioner when the transmitting source is a wireless transmitting source.
12. The coordinated control device according to claim 11,
the detection unit is further configured to: detecting whether a starting-up instruction is received within a preset time period from the moment of switching to the standby mode;
the second closing unit is further configured to: and when the starting instruction is not received, the multi-connected air conditioner is closed.
13. A multi-connected air conditioner, comprising: a linkage control apparatus according to any one of claims 7 to 12.
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