CN113465098A - Control method and device for optimizing shutdown airflow sound of compressor and air conditioner - Google Patents

Control method and device for optimizing shutdown airflow sound of compressor and air conditioner Download PDF

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Publication number
CN113465098A
CN113465098A CN202110555069.0A CN202110555069A CN113465098A CN 113465098 A CN113465098 A CN 113465098A CN 202110555069 A CN202110555069 A CN 202110555069A CN 113465098 A CN113465098 A CN 113465098A
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China
Prior art keywords
compressor
temperature difference
pressure side
frequency
temperature
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CN202110555069.0A
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Chinese (zh)
Inventor
夏治新
袁前
王啸娟
颜景旭
胡洪昊
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Priority to CN202110555069.0A priority Critical patent/CN113465098A/en
Publication of CN113465098A publication Critical patent/CN113465098A/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
    • F24F11/30—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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—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
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump 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
    • F24F11/88—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
    • 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
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

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

Abstract

The invention provides a control method and a control device for optimizing shutdown airflow sound of a compressor and an air conditioner, wherein the method comprises the following steps: if the condition that the compressor is stopped is met, acquiring the running frequency and the temperature difference of the high-pressure side of the compressor; the high-pressure side temperature difference is the difference between the high-pressure side coil pipe temperature and the high-pressure side environment temperature; if the running frequency of the compressor is greater than the frequency threshold and the temperature difference of the high-pressure side is greater than the temperature difference threshold, controlling the compressor to run in a frequency reduction mode; and after the compressor operates for the first time length in a frequency reduction mode, if the temperature difference of the high-pressure side is smaller than or equal to the temperature difference threshold value, the compressor is controlled to stop. The invention can reduce the system pressure difference before the shutdown, control the compressor to shutdown after the temperature difference of the high-pressure side meets the condition, quickly balance the system pressure after the shutdown, and eliminate the airflow noise generated by the shutdown of the compressor.

Description

Control method and device for optimizing shutdown airflow sound of compressor and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and device for optimizing shutdown airflow sound of a compressor and an air conditioner.
Background
With the continuous updating and upgrading of air conditioning technology, the requirements of consumers on low noise and the like of the air conditioner are higher and higher. When the existing air conditioner is stopped or is stopped for defrosting when the operation reaches the set temperature, if the operation frequency of a compressor is high and the system pressure difference is large before the air conditioner is stopped, obvious airflow sound can be often generated on the indoor machine side when the compressor is stopped, and the use experience of a user is influenced.
Disclosure of Invention
The invention solves the problem that the existing air conditioner generates airflow noise when the compressor is stopped.
To solve the above problems, the present invention provides a control method for optimizing sound of compressor shutdown air flow, the method comprising: if the condition that the compressor is stopped is met, acquiring the running frequency and the temperature difference of the high-pressure side of the compressor; the high-pressure side temperature difference is the difference between the high-pressure side coil pipe temperature and the high-pressure side environment temperature; if the running frequency of the compressor is greater than a frequency threshold value and the temperature difference of the high-pressure side is greater than a temperature difference threshold value, controlling the compressor to run in a frequency reduction mode; and after the compressor operates for the first time length in a frequency reduction mode, if the temperature difference of the high-pressure side is less than or equal to the temperature difference threshold value, controlling the compressor to stop.
The invention controls the compressor to operate in a frequency reducing mode under the condition that the operation frequency of the compressor is greater than the frequency threshold and the temperature difference of the high-pressure side is greater than the temperature difference threshold, and can reduce the operation frequency of the compressor before the shutdown and operate for a certain time by adding the shutdown frequency reducing buffer control logic, thereby reducing the system pressure difference before the shutdown, controlling the compressor to stop when the temperature difference of the high-pressure side meets the condition, quickly balancing the system pressure after the shutdown, and eliminating the airflow noise generated by the shutdown of the compressor.
Optionally, the method further comprises: and after the compressor operates for the first time length in a frequency reduction mode, if the temperature difference of the high-pressure side is greater than the temperature difference threshold value, controlling the compressor to continue to operate for the second time length and then stopping the compressor.
The invention can properly prolong the running time when continuously operating in the frequency reduction mode, thereby ensuring that the system pressure difference is reduced to be less than the preset level after continuously operating for a period of time, and controlling the compressor to directly stop without further executing detection and judgment logic.
Optionally, the second duration is greater than or equal to the first duration.
The invention can properly prolong the running time when continuing to operate the frequency reduction, reduce the control logic and control the compressor to directly stop after the time is reached.
Optionally, the acquiring the high-pressure side temperature difference includes: detecting whether the operation mode of the air conditioner is a cooling mode or a heating mode; if the mode is a refrigeration mode, calculating the difference value between the temperature of the outer disc and the outdoor environment temperature to obtain the temperature difference of the high-pressure side; if the heating mode is adopted, the difference value between the temperature of the inner disc and the indoor environment temperature is calculated to obtain the temperature difference of the high-pressure side.
The invention can respectively calculate the corresponding high-pressure side temperature difference aiming at different operation modes, thereby controlling the compressor to stop after the high-pressure side temperature difference meets the condition and eliminating the airflow noise generated by the compressor stopping.
Optionally, the method further comprises: and if the running frequency of the compressor is less than or equal to the frequency threshold value, controlling the compressor to stop.
The invention can control the compressor to directly stop without executing frequency reduction buffering under the condition that the running frequency of the compressor is less than or equal to the frequency threshold value, thereby improving the stop speed of the air conditioner.
Optionally, the value range of the frequency threshold is 30-70 Hz; and/or the value range of the temperature difference threshold is 0-10 ℃.
The invention provides the value ranges of the frequency threshold and the temperature difference threshold, can improve the judgment accuracy of the magnitude of the pressure difference, and further can improve the necessity and effectiveness of executing the frequency reduction buffer control logic, so that the system pressure can be quickly balanced after the compressor is stopped.
Optionally, the value range of the first duration is 10-60 s; and/or the value range of the second time length is 10-90 s.
The invention provides the value range of the down-conversion operation time length, the system pressure difference before shutdown can be reduced, the compressor is controlled to be stopped after the temperature difference of the high-pressure side meets the condition, the system pressure can be quickly balanced after the shutdown, and the airflow noise generated by the compressor stopping is eliminated.
The present invention provides a control device for optimizing compressor shutdown airflow sound, the device comprising: the acquisition module is used for acquiring the running frequency of the compressor and the temperature difference of the high-pressure side if the condition that the compressor is stopped is detected to be met; the high-pressure side temperature difference is the difference between the high-pressure side coil pipe temperature and the high-pressure side environment temperature; the frequency reduction module is used for controlling the compressor to perform frequency reduction operation if the operation frequency of the compressor is greater than a frequency threshold and the temperature difference of the high-pressure side is greater than a temperature difference threshold; and the shutdown module is used for controlling the compressor to be shut down if the temperature difference of the high-pressure side is less than or equal to the temperature difference threshold value after the compressor operates for a first time length in a frequency reduction mode.
The invention provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium stores a computer program, and the computer program is read by the processor and runs to realize the control method for optimizing the stopping airflow sound of the compressor.
The present invention provides a computer-readable storage medium storing a computer program which, when read and executed by a processor, implements the above-described control method for optimizing compressor off-stream sound.
The control device for optimizing the stop airflow sound of the compressor, the air conditioner and the computer readable storage medium can achieve the same technical effect as the control method for optimizing the stop airflow sound of the compressor.
Drawings
FIG. 1 is a schematic flow chart of a control method for optimizing compressor stall airflow sound in one embodiment of the present invention;
FIG. 2 is a schematic flow chart of another control method for optimizing compressor stall airflow sound in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control device for optimizing compressor off-stream sound in one embodiment of the present invention.
Description of reference numerals:
301-an obtaining module; 302-a frequency reduction module; 303-shutdown module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
When the ambient temperature of the existing air conditioning system is detected to reach the set temperature or meet the defrosting condition, the compressor immediately executes a shutdown command, the operating frequency of the compressor is directly reduced to zero from the current frequency, the system refrigerant pressure difference is large at the moment, the high pressure and the low pressure cannot be rapidly balanced, airflow noise is easily excited and transmitted to the indoor side, and the indoor unit emits noise.
Specifically, the control method of the invention reduces the pressure difference of the system refrigerant by adding a frequency reduction buffer stage before the compressor is stopped, thereby eliminating the airflow sound when the compressor is stopped.
FIG. 1 is a schematic flow diagram of a control method for optimizing compressor stall airflow sound in one embodiment of the present invention, the method comprising:
s102, if the condition that the compressor is stopped is detected to be met, the running frequency of the compressor and the temperature difference of the high-pressure side are obtained.
The compressor stopping condition can be that the air conditioning system is stopped when reaching a set temperature, the air conditioning system is stopped before defrosting, and the like.
The high-pressure side temperature difference is a difference between the high-pressure side coil temperature and the high-pressure side ambient temperature, and the high-pressure side is an outdoor side or an indoor side respectively based on different operation modes, such as a cooling mode or a heating mode. Based on this, the process of acquiring the high-pressure side temperature difference may include the following steps: detecting whether the operation mode of the air conditioner is a cooling mode or a heating mode; if the mode is a refrigeration mode, calculating the difference value between the temperature of the outer disc and the outdoor environment temperature to obtain the temperature difference of the high-pressure side; if the heating mode is adopted, the difference value between the temperature of the inner disc and the indoor environment temperature is calculated to obtain the temperature difference of the high-pressure side.
The air conditioning system can detect the current operation mode, the compressor operation frequency f and the indoor environment temperature TInner ringIntermediate temperature (inner disc temperature) T of indoor unit evaporatorInner discOutdoor ambient temperature TOuter ringIntermediate temperature (outer plate temperature) T of condenser of outdoor unitOuter plateAnd the difference value delta T between the temperature of the high-pressure side coil pipe and the temperature of the high-pressure side environment.
Optionally, when the operation mode is the cooling mode, the high-pressure side temperature difference Δ T is TOuter plate-TOuter ring(ii) a When the operation mode is the heating mode, the temperature difference delta T on the high-pressure side is equal to TInner disc-TInner ring。
And S104, if the running frequency of the compressor is greater than the frequency threshold and the temperature difference of the high-pressure side is greater than the temperature difference threshold, controlling the compressor to perform frequency reduction running.
In the case of a high operating frequency of the compressor, the load of the air conditioning system is also large, for example, the air conditioning system is in a state where cooling or heating is not finished for a long time under a high load, and the system pressure difference is generally large in this state.
In the cooling mode, if TOuter plate-TOuter ringThe value of (b) is large, and the temperature of the outdoor condenser is obviously higher than the outdoor ambient temperature, which indicates that the outdoor condenser may be in a state that the high-load refrigeration is not finished for a long time, and the system pressure difference is generally large in this state.
In the heating mode, if TInner disc-TInner ringIf the value of (b) is greater, the temperature of the evaporator of the indoor unit is obviously higher than the temperature of the indoor environment, which indicates that the indoor unit may be in a state that the heating of the high load is not finished for a long time, and the system pressure difference is generally greater in this state.
According to the embodiment, the running frequency and the high-pressure side temperature difference of the compressor are combined to be used as the basis for judging the system pressure difference, so that whether the frequency reduction buffer control logic needs to be executed or not is determined, the system pressure difference is judged by combining the threshold conditions of the frequency and the temperature difference, the judgment accuracy of the pressure difference can be effectively improved, the necessity and effectiveness for executing the frequency reduction buffer control logic can be further improved, and the system pressure can be rapidly balanced after the compressor is stopped.
If the running frequency of the compressor is less than or equal to the frequency threshold, the corresponding load is small, the system pressure difference is small, the system pressure can be quickly balanced after the compressor is stopped, and the compressor can be controlled to directly stop without executing frequency reduction buffering, so that the stop speed of the air conditioner is increased.
And S106, after the compressor operates for the first time period in a frequency reduction mode, if the temperature difference of the high-pressure side is smaller than or equal to the temperature difference threshold value, the compressor is controlled to stop.
Wherein the compressor may be down-clocked to operate at or below the frequency threshold. And after the frequency reduction operation is carried out for the first time, the temperature difference of the high-pressure side is detected again, and if the temperature difference of the high-pressure side is reduced to be less than or equal to the temperature difference threshold value, the compressor is controlled to stop.
And after the compressor operates for the first time period in a frequency reduction mode, if the temperature difference of the high-pressure side is greater than the temperature difference threshold value, controlling the compressor to continue to operate for a second time period and then stopping. And after the frequency reduction operation is carried out for the first time period, the temperature difference of the high-pressure side is detected again, if the temperature difference of the high-pressure side is not reduced to be less than or equal to the temperature difference threshold value, the compressor is controlled to continue to operate for the second time period so as to further reduce the system pressure difference before the shutdown, and the compressor is controlled to directly shut down after the operation for the second time period.
Optionally, the second duration is greater than or equal to the first duration. Considering that the reduction speed of the temperature difference on the high-pressure side is not enough in the process of operating for the first time period, the operation time period can be properly prolonged when the frequency reduction operation is continued, so that the system pressure difference is reduced to be less than the preset level after the operation is continued for a period of time, and the compressor can be controlled to be directly stopped without further executing detection and judgment logic.
According to the control method for optimizing the shutdown airflow sound of the compressor, the compressor is controlled to operate in a frequency reduction mode under the condition that the operation frequency of the compressor is greater than a frequency threshold value and the temperature difference of the high-pressure side is greater than a temperature difference threshold value, the operation frequency of the compressor before shutdown can be reduced and the compressor can operate for a certain time by adding shutdown frequency reduction buffer control logic, so that the system pressure difference before shutdown is reduced, the compressor is controlled to be stopped after the temperature difference of the high-pressure side meets the condition, the system pressure can be quickly balanced after shutdown, and the airflow noise generated when the compressor is stopped is eliminated.
Optionally, the frequency threshold value ranges from 30 to 70Hz, such as 50Hz, and the temperature difference threshold value ranges from 0 to 10 ℃, such as 3 ℃; the value range of the first duration is 10-60 s, such as 20 s; the second duration ranges from 10 s to 90s, for example, 30 s.
Referring to FIG. 2, a schematic flow diagram of a control method for optimizing compressor stall airflow sound includes the steps of:
s201, when the air conditioning system detects that the shutdown condition of the compressor is met, the air conditioning system enters a shutdown frequency-reducing buffer control logic.
S202, detecting the current operation mode, f and TInner ring、TInner disc、TOuter ring、TOuter plateAnd Δ T.
S203, judging whether f is more than fSetting upAnd DeltaT > < DeltaTSetting up. If yes, executing S204; if not, the process continues to S206.
Alternatively, fSetting upThe value range is 30-70 Hz, for example, 50 Hz; delta TSetting upThe value range is 0-10 ℃, for example, the value is 3 ℃. If the judgment condition is met, the operation frequency of the current compressor is high, the system pressure difference is large, and the frequency reduction buffer control needs to be executed.
When f is less than or equal to fSetting upWhen the compressor is in use, the running frequency of the compressor is lower, and the compressor is not requiredThe frequency reducing buffer stage is executed, and the compressor can be controlled to be directly stopped.
S204, reducing the running frequency of the compressor from f to fSetting upAfter t of operation1The length of time.
S205, detecting the delta T and judging whether the delta T is less than or equal to the delta TSetting up. If yes, go to S206; if not, the process continues to S207.
The running frequency of the compressor is reduced from f to fSetting upThen, t is run again1And detecting the delta T after the time is long, and when the delta T is less than or equal to the delta T, setting to show that the system pressure difference is smaller at the moment, and executing shutdown operation.
And S206, controlling the compressor to directly stop.
S207, continuing to operate t2And directly stopping the machine after the time length.
If t is running1After a time duration, detecting DeltaT > < DeltaTSetting upThen t is run again2And directly stopping the machine after the time length. Alternatively, t1The value range is 10-60 s, for example, 20 s; t is t2The value range is 10-90 s, for example, 30 s.
According to the control method provided by the embodiment, the frequency reduction buffering stage is added before the air conditioner compressor is stopped so as to reduce the running frequency of the compressor before the air conditioner compressor is stopped and reduce the system pressure difference before the air conditioner compressor is stopped, so that the system pressure can be quickly balanced after the air conditioner compressor is stopped, and further, the air flow noise generated when the air conditioner compressor is stopped is eliminated.
The control method provided by this embodiment determines the operating frequency of the compressor and the system pressure difference by detecting the operating mode of the air conditioner before shutdown, the operating frequency of the compressor, and the difference between the corresponding temperature of the high-pressure side coil and the ambient temperature, so as to determine whether to execute the down-conversion buffer control, and execute the down-conversion buffer control only under the conditions of higher operating frequency of the compressor and larger system pressure difference. The system pressure difference before shutdown is reduced, meanwhile, the damage of system devices (such as a four-way reversing valve, a throttle valve and the like) caused by overlarge system shutdown pressure difference can be reduced, and the reliability and the service life of the system are improved.
Fig. 3 is a schematic structural diagram of a control device for optimizing sound of compressor shutdown air flow according to an embodiment of the present invention, the control device includes:
an obtaining module 301, configured to obtain an operating frequency and a high-pressure side temperature difference of a compressor if it is detected that a compressor shutdown condition is met; the high-pressure side temperature difference is the difference between the high-pressure side coil pipe temperature and the high-pressure side environment temperature;
the frequency reducing module 302 is configured to control the compressor to perform frequency reduction operation if the operating frequency of the compressor is greater than a frequency threshold and the temperature difference between the high-pressure sides is greater than a temperature difference threshold;
and the shutdown module 303 is configured to control the compressor to shutdown if the temperature difference on the high-pressure side is less than or equal to the temperature difference threshold after the compressor operates for the first time period in a frequency reduction mode.
The control device for optimizing the shutdown airflow sound of the compressor provided by the embodiment controls the compressor to operate in a frequency reduction mode under the condition that the operation frequency of the compressor is greater than a frequency threshold value and the temperature difference of the high-pressure side is greater than a temperature difference threshold value, and can reduce the operation frequency of the compressor before shutdown and operate for a certain time by adding shutdown frequency reduction buffer control logic, so that the system pressure difference before shutdown is reduced, the compressor is controlled to be stopped after the temperature difference of the high-pressure side meets the condition, the system pressure can be quickly balanced after shutdown, and the airflow noise generated when the compressor is stopped is eliminated.
Optionally, as an embodiment, the down-conversion module 302 is further configured to: and after the compressor operates for the first time length in a frequency reduction mode, if the temperature difference of the high-pressure side is greater than the temperature difference threshold value, controlling the compressor to continue to operate for the second time length and then stopping the compressor.
Optionally, as an embodiment, the second duration is greater than or equal to the first duration.
Optionally, as an embodiment, the obtaining module 301 is specifically configured to: detecting whether the operation mode of the air conditioner is a cooling mode or a heating mode; if the mode is a refrigeration mode, calculating the difference value between the temperature of the outer disc and the outdoor environment temperature to obtain the temperature difference of the high-pressure side; if the heating mode is adopted, the difference value between the temperature of the inner disc and the indoor environment temperature is calculated to obtain the temperature difference of the high-pressure side.
Optionally, as an embodiment, the shutdown module 303 is further configured to: and if the running frequency of the compressor is less than or equal to the frequency threshold value, controlling the compressor to stop.
Optionally, as an embodiment, a value range of the frequency threshold is 30 to 70 Hz; and/or the value range of the temperature difference threshold is 0-10 ℃.
Optionally, as an embodiment, a value range of the first duration is 10 to 60 seconds; and/or the value range of the second time length is 10-90 s.
The embodiment of the invention also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the control method for optimizing the shutdown airflow sound of the compressor.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is read and executed by a processor, the method provided in the foregoing embodiment is implemented, and the same technical effect can be achieved, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The control device for optimizing the sound of the compressor stopping air flow and the air conditioner disclosed by the embodiment correspond to the control method for optimizing the sound of the compressor stopping air flow disclosed by the embodiment, so that the description is simple, and relevant points can be referred to the description of the method part.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. A control method for optimizing compressor shutdown airflow sound, the method comprising: if the condition that the compressor is stopped is met, acquiring the running frequency and the temperature difference of the high-pressure side of the compressor;
the high-pressure side temperature difference is the difference between the high-pressure side coil pipe temperature and the high-pressure side environment temperature;
if the running frequency of the compressor is greater than a frequency threshold value and the temperature difference of the high-pressure side is greater than a temperature difference threshold value, controlling the compressor to run in a frequency reduction mode;
and after the compressor operates for the first time length in a frequency reduction mode, if the temperature difference of the high-pressure side is less than or equal to the temperature difference threshold value, controlling the compressor to stop.
2. The control method for optimizing compressor shutdown airflow sound of claim 1, further comprising:
and after the compressor operates for the first time length in a frequency reduction mode, if the temperature difference of the high-pressure side is greater than the temperature difference threshold value, controlling the compressor to continue to operate for the second time length and then stopping the compressor.
3. The control method for optimizing compressor shutdown airflow sound of claim 2, said second period of time being greater than or equal to said first period of time.
4. The control method for optimizing compressor shutdown airflow sound of claim 1, wherein said obtaining a high side temperature differential comprises:
detecting whether the operation mode of the air conditioner is a cooling mode or a heating mode;
if the mode is a refrigeration mode, calculating the difference value between the temperature of the outer disc and the outdoor environment temperature to obtain the temperature difference of the high-pressure side;
if the heating mode is adopted, the difference value between the temperature of the inner disc and the indoor environment temperature is calculated to obtain the temperature difference of the high-pressure side.
5. The control method for optimizing compressor shutdown airflow sound of claim 1, further comprising:
and if the running frequency of the compressor is less than or equal to the frequency threshold value, controlling the compressor to stop.
6. The control method for optimizing compressor shutdown airflow sound according to claim 1, wherein the frequency threshold value is in a range of 30-70 Hz; and/or the value range of the temperature difference threshold is 0-10 ℃.
7. The control method for optimizing compressor shutdown airflow sound according to claim 3, characterized in that the value of the first time period is in the range of 10-60 s; and/or the value range of the second time length is 10-90 s.
8. A control apparatus for optimizing compressor off air flow sound, said apparatus comprising:
the acquisition module is used for acquiring the running frequency of the compressor and the temperature difference of the high-pressure side if the condition that the compressor is stopped is detected to be met; the high-pressure side temperature difference is the difference between the high-pressure side coil pipe temperature and the high-pressure side environment temperature;
the frequency reduction module is used for controlling the compressor to perform frequency reduction operation if the operation frequency of the compressor is greater than a frequency threshold and the temperature difference of the high-pressure side is greater than a temperature difference threshold;
and the shutdown module is used for controlling the compressor to be shut down if the temperature difference of the high-pressure side is less than or equal to the temperature difference threshold value after the compressor operates for a first time length in a frequency reduction mode.
9. An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the method of any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method according to any one of claims 1-7.
CN202110555069.0A 2021-05-21 2021-05-21 Control method and device for optimizing shutdown airflow sound of compressor and air conditioner Pending CN113465098A (en)

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CN115076939A (en) * 2022-06-23 2022-09-20 宁波奥克斯电气股份有限公司 Air conditioner external unit resonance control method and device, storage medium and air conditioner

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Application publication date: 20211001