CN112696804B - Noise reduction control method and device for indoor unit of air conditioner and air conditioner - Google Patents
Noise reduction control method and device for indoor unit of air conditioner and air conditioner Download PDFInfo
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- CN112696804B CN112696804B CN202011492984.1A CN202011492984A CN112696804B CN 112696804 B CN112696804 B CN 112696804B CN 202011492984 A CN202011492984 A CN 202011492984A CN 112696804 B CN112696804 B CN 112696804B
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a noise reduction control method and device for an air conditioner indoor unit and an air conditioner, and relates to the technical field of air conditioners, wherein the noise reduction control method for the air conditioner indoor unit comprises the following steps: judging whether the target air-conditioning indoor unit is in a stable operation state, if so, acquiring the indoor environment temperature of the target air-conditioning indoor unit, and determining the current temperature rise rate based on the environment temperature and the current set temperature; acquiring operation parameters of a target air-conditioning indoor unit, and controlling the rotating speed of the target air-conditioning indoor unit based on the current temperature rise rate and the operation parameters so as to reduce the noise of the target air-conditioning indoor unit; the operation parameters comprise the inlet pipe temperature and the outlet pipe temperature of the target air-conditioning indoor unit and the operation current of the target air-conditioning indoor unit. The method and the device improve the reasonability of the rotation speed determination of the target air-conditioning indoor unit, reduce the noise of the target air-conditioning indoor unit, and improve the comfort experience of users.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a noise reduction control method and device for an indoor unit of an air conditioner and the air conditioner.
Background
The air conditioner noise is the noise that air conditioning system during operation sent, and the indoor noise of air conditioner place environment mainly is produced by indoor motor, and the higher the rotational speed of indoor motor is, and the noise value is bigger, and the travelling comfort is experienced better. With the increasing demand of people for comfort of air conditioners, how to reduce the indoor noise of the air conditioner becomes a problem to be considered. After the air conditioning unit is started, the temperature difference between the indoor environment temperature and the set temperature is large, the unit load output is large, the noise reduction control is performed on the indoor motor in an accidental mode, the problem that the environment temperature cannot reach the current set temperature is easily caused, or the current of the indoor motor is easily caused to be abnormal in the process of controlling the rotating speed of the motor, and then the indoor motor is damaged. Therefore, the existing noise reduction control technology of the indoor unit has the problems of poor rationality, high air conditioner noise and low user comfort.
Disclosure of Invention
In order to solve the problems, the invention provides a noise reduction control method and device for an indoor unit of an air conditioner and the air conditioner, which can improve the reasonability of the rotation speed determination of a target indoor unit of the air conditioner, reduce the noise of the target indoor unit of the air conditioner and improve the comfort experience of a user.
According to an embodiment of the present invention, on the one hand, a noise reduction control method for an indoor unit of an air conditioner is provided, including: judging whether a target air-conditioning indoor unit is in a stable operation state, if so, acquiring the indoor environment temperature of the target air-conditioning indoor unit, and determining the current temperature rise rate based on the environment temperature and the current set temperature; acquiring operation parameters of the target air-conditioning indoor unit, and controlling the rotating speed of the target air-conditioning indoor unit based on the current temperature rise rate and the operation parameters so as to reduce the noise of the target air-conditioning indoor unit; the operation parameters comprise the inlet pipe temperature and the outlet pipe temperature of the target air-conditioning indoor unit and the operation current of the target air-conditioning indoor unit.
Through adopting above-mentioned technical scheme, control the rotational speed of target air conditioning indoor set based on current temperature rise rate and operational parameter, when can compromise user's silence demand, prevent that the operating current of indoor motor from leading to the air conditioner damage too big, promoted the rationality of target air conditioning indoor set motor speed, reduced the noise of target air conditioning indoor set, promoted user's comfortable nature and experienced.
Preferably, the step of determining whether the target indoor unit of the air conditioner is in a stable operation state, if so, obtaining the indoor ambient temperature of the target indoor unit of the air conditioner, and determining the current temperature rise rate based on the ambient temperature and the current set temperature includes: the method comprises the steps of obtaining the running time of a target air-conditioning indoor unit, obtaining the indoor environment temperature of the target air-conditioning indoor unit when the running time reaches the preset time, and determining that the target air-conditioning indoor unit is in a stable running state when the difference value between the environment temperature and the current set temperature is within the preset range; and calculating the change rate of the ambient temperature within first preset time based on the current set temperature to obtain the current temperature rise rate.
By adopting the technical scheme, whether the target air-conditioning indoor unit is in a stable operation state or not can be accurately detected, and the current temperature rise rate is determined when the target air-conditioning indoor unit stably operates, so that the rotating speed of an indoor motor of the target air-conditioning indoor unit is controlled in a proper time period based on the current temperature rise rate, and the rotating speed control rationality of the motor is improved.
Preferably, the step of controlling the rotation speed of the target air-conditioning indoor unit based on the current temperature rise rate and the operating parameter to reduce the noise of the target air-conditioning indoor unit includes: step a, acquiring a target rotating speed corresponding to the current temperature rise rate from a preset rotating speed relation table; the rotating speed relation table comprises a plurality of temperature rise values, and a minimum motor rotating speed and a minimum noise value corresponding to each temperature rise value; b, determining the suction superheat degree of the target air conditioner indoor unit based on the inlet pipe temperature and the outlet pipe temperature; and c, controlling the rotating speed of the target air-conditioning indoor unit based on the suction superheat degree and the target rotating speed so as to reduce the noise of the target air-conditioning indoor unit.
By adopting the technical scheme, the minimum motor rotating speed corresponding to the current temperature rise rate is obtained, the rotating speed of the target air-conditioning indoor unit is controlled based on the air suction superheat degree of the target air-conditioning indoor unit, and the indoor motor can be controlled on the basis of considering the superheat in the air suction pipe, so that the target air-conditioning compressor and the indoor motor are protected.
Preferably, the step of controlling the rotation speed of the target air-conditioning indoor unit based on the suction superheat degree and the target rotation speed to reduce the noise of the target air-conditioning indoor unit includes: and when the suction superheat degree is greater than or equal to a first temperature and less than or equal to a second temperature, finely controlling the rotating speed of the target air-conditioning indoor unit based on the running current and the target rotating speed so as to reduce the noise of the target air-conditioning indoor unit.
By adopting the technical scheme, when the suction superheat degree of the target air conditioner indoor unit meets the temperature requirement, the indoor motor is accurately controlled based on the running current and the target rotating speed, and the reliability of indoor motor control is improved.
Preferably, the step of finely controlling the rotation speed of the target air-conditioning indoor unit based on the operating current and the target rotation speed to reduce the noise of the target air-conditioning indoor unit includes: and when the running current is within a preset current range, controlling the rotating speed of the target air-conditioning indoor unit to be reduced to the target rotating speed so as to enable the noise value of the target air-conditioning indoor unit to be a target noise value.
By adopting the technical scheme, the rotating speed of the indoor motor can be accurately controlled to be the target rotating speed, and the target rotating speed is obtained from the preset rotating speed relation table, so that the target rotating speed can meet the temperature rise rate, the noise value of the target air-conditioning indoor unit is reduced as much as possible, and the comfort of a user is improved.
Preferably, the step of controlling the rotation speed of the target air conditioning indoor unit based on the suction superheat degree and the target rotation speed includes: and when the suction superheat degree is larger than a second temperature or the running current is larger than a preset current range, controlling the rotating speed of the target air-conditioning indoor unit to reduce a second rotating speed value, and returning to execute the step a when the target air-conditioning indoor unit runs for a second preset time.
By adopting the technical scheme, the problem that the running current of the indoor motor is too large and further the motor is damaged can be avoided, the problem that the compressor is damaged due to the fact that the suction superheat degree is too large can also be avoided, the target rotating speed corresponding to the current temperature rise rate is determined by returning after the rotating speed of the indoor motor is reduced, self-adaptive control of the rotating speed of the indoor motor can be achieved, and the stability of controlling the rotating speed of the indoor motor is improved.
Preferably, the step of controlling the rotation speed of the target air conditioning indoor unit based on the suction superheat degree and the target rotation speed includes: and when the suction superheat degree is smaller than a first temperature or the running current is smaller than a preset current range, controlling the rotating speed of the target air-conditioning indoor unit to be increased by a third rotating speed value, and returning to execute the step a when the target air-conditioning indoor unit runs for a third preset time.
By adopting the technical scheme, the problem that the compressor is easily damaged due to the fact that the suction superheat degree is too small can be avoided, the phenomenon that the rotating speed of the indoor motor is too low to cause too high heating of the motor can also be avoided, the rotating speed of the motor is controlled to be increased so that the rotating speed of the indoor motor is larger than the minimum rated rotating speed, and the reliability of rotating speed control of the indoor unit of the target air conditioner is improved.
Preferably, the step of obtaining the target rotation speed corresponding to the current temperature rise rate from a preset rotation speed relationship table includes: taking the temperature rise rate with the minimum absolute value of the difference value between the current temperature rise rate and the preset rotating speed relation table as a target temperature rise rate; and taking the minimum motor rotating speed corresponding to the target temperature rise rate in the preset rotating speed relation table as the target rotating speed.
By adopting the technical scheme, the temperature rise rate closest to the current temperature rise rate is obtained from the preset rotating speed relation table, and the minimum motor rotating speed corresponding to the temperature rise rate closest to the current temperature rise rate is taken as the target rotating speed, so that the fine control of the rotating speed of the indoor motor can be realized, and the noise value of the target air conditioner indoor unit is reduced.
According to an embodiment of the present invention, in another aspect, there is provided a noise reduction control device for an indoor unit of an air conditioner, including: the temperature rise rate determining module is used for judging whether the target air-conditioning indoor unit is in a stable operation state, if so, acquiring the indoor environment temperature of the target air-conditioning indoor unit, and determining the current temperature rise rate based on the environment temperature and the current set temperature; the rotating speed control module is used for acquiring the operating parameters of the target air-conditioning indoor unit and controlling the rotating speed of the target air-conditioning indoor unit based on the current temperature rise rate and the operating parameters so as to reduce the noise of the target air-conditioning indoor unit; the operation parameters comprise an inlet pipe temperature and an outlet pipe temperature of the target air-conditioning indoor unit and an operation current of the target air-conditioning indoor unit.
According to an embodiment of the present invention, in another aspect, there is provided an air conditioner including a computer readable storage medium storing a computer program and a processor, the computer program being read by the processor and when executed, implementing the method according to any one of the first aspect.
The invention has the following beneficial effects: when the target indoor air-conditioning unit is in a stable operation state, the current temperature rise rate is calculated according to the indoor environment temperature and the current set temperature, the rotating speed of the target indoor air-conditioning unit can be automatically controlled according to the current temperature rise rate, the pipe inlet temperature, the pipe outlet temperature and the operation current of the indoor motor, the reasonability of the determination of the rotating speed of the target indoor air-conditioning unit is improved, the noise of the target indoor air-conditioning unit is reduced, and the comfort experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a flow chart of a noise reduction control method for an indoor unit of an air conditioner according to the present invention;
fig. 2 is a schematic structural diagram of a noise reduction control device of an indoor unit of an air conditioner according to the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The first embodiment is as follows:
the embodiment provides a noise reduction control method for an air conditioner indoor unit, which can be applied to a target air conditioner indoor unit, where the target air conditioner indoor unit can be any variable frequency air conditioner that needs to reduce noise, such as a variable frequency central air conditioner, and refer to a flow chart of the noise reduction control method for the air conditioner indoor unit shown in fig. 1, where the method mainly includes the following steps S102 to S104:
step S102: and judging whether the target air-conditioning indoor unit is in a stable operation state, if so, acquiring the indoor environment temperature of the target air-conditioning indoor unit, and determining the current temperature rise rate based on the environment temperature and the current set temperature.
When the target air-conditioning indoor unit is started, because the temperature difference between the indoor environment temperature and the current set temperature input by the user is large, the unit load output of the target air-conditioning indoor unit is large, the change speed of the indoor temperature is high, when the target air-conditioning indoor unit is in a stable operation state, the temperature difference between the indoor environment temperature and the current set temperature is small, and the unit load output of the target air-conditioning indoor unit is reduced.
And detecting the running state of the target air-conditioning indoor unit, judging whether the target air-conditioning indoor unit is in a stable running state according to the running state of the target air-conditioning indoor unit, and calculating the current temperature rise rate of the target air-conditioning indoor unit based on the indoor environment temperature of the target air-conditioning indoor unit and the current set temperature input by a user when the target air-conditioning indoor unit is in the stable running state. In one embodiment, the current temperature rise rate may be a change rate of a difference value between an indoor environment temperature at which the target indoor air conditioner is located and a current set temperature within a preset time; in another embodiment, the current temperature increase rate may be a ratio of a difference between an ambient temperature of the room where the target indoor unit of the air conditioner is located and a current temperature to a temperature reference value, where the temperature reference value may be an ambient temperature at a previous time (i.e., an ambient temperature collected before a preset time).
Step S104: and acquiring the operating parameters of the target air-conditioning indoor unit, and controlling the rotating speed of the target air-conditioning indoor unit based on the current temperature rise rate and the operating parameters so as to reduce the noise of the target air-conditioning indoor unit.
The operation parameters comprise the inlet pipe temperature and the outlet pipe temperature of the target air-conditioning indoor unit and the operation current of the indoor motor, the inlet pipe temperature and the outlet pipe temperature are respectively the temperatures of the inlet and the outlet of the air suction pipeline of the target air-conditioning compressor, and the inlet pipe temperature and the outlet pipe temperature of the target air-conditioning indoor unit can be detected through the temperature sensor. According to the current ambient temperature change rate, the inlet pipe temperature and the outlet pipe temperature of the target air-conditioning indoor unit and the running current of the indoor motor, the rotating speed of the indoor motor can be gradually reduced and the noise of the target air-conditioning indoor unit can be reduced when the target air-conditioning indoor unit runs stably; the rotating speed of the target air-conditioning indoor unit is controlled based on the current temperature rise rate and the operation parameters, so that the air-conditioning damage caused by the overlarge operation current of the indoor motor can be prevented while the mute requirement of a user is considered, and the rotating speed reasonability of the indoor motor of the target air-conditioning indoor unit is improved.
According to the noise reduction control method for the indoor unit of the air conditioner, when the target indoor unit of the air conditioner is in a stable operation state, the current temperature rise rate is calculated according to the indoor environment temperature and the current set temperature, the rotating speed of the target indoor unit of the air conditioner can be automatically controlled according to the current temperature rise rate, the pipe inlet temperature, the pipe outlet temperature and the operation current of the indoor motor, the reasonability of the determination of the rotating speed of the target indoor unit of the air conditioner is improved, the noise of the target indoor unit of the air conditioner is reduced, and the comfort experience of a user is improved.
In order to accurately determine the current temperature increase rate, the embodiment provides an implementation manner of determining whether the target air-conditioning indoor unit is in a stable operation state, obtaining an indoor ambient temperature of the target air-conditioning indoor unit, and determining the current temperature increase rate based on the ambient temperature and a current set temperature, and may specifically refer to the following steps (1) to (2):
step (1): and acquiring the running time of the target air-conditioning indoor unit, when the running time reaches preset time, or acquiring the indoor environment temperature of the target air-conditioning indoor unit, and when the difference value between the environment temperature and the current set temperature is within a preset range, determining that the target air-conditioning indoor unit is in a stable running state.
When the target air conditioner indoor unit operates, a user cannot timely judge whether the air conditioner unit operates stably, and further cannot judge the time for lowering the windshield to reduce the noise of the air conditioner. In an embodiment, the target indoor air conditioner may automatically time after being powered on, the controller of the target indoor air conditioner may obtain the operation time of the target indoor air conditioner in real time, and when the operation time of the target indoor air conditioner reaches a preset time, it may be determined that the target indoor air conditioner is currently in a stable operation state, where the preset time may be determined according to a compressor frequency of the target indoor air conditioner, such as 10 to 30 minutes.
In another embodiment, the indoor ambient temperature of the target indoor air conditioning unit may be detected by a temperature sensor, and after the air conditioning unit operates stably, the deviation between the indoor ambient temperature and the current set temperature input by the user is usually within a preset range, at this time, the load output demand of the air conditioning unit is reduced, and the rotation speed of the indoor unit may be appropriately reduced. Therefore, when the difference between the indoor ambient temperature of the target air-conditioning indoor unit and the current set temperature is within a preset range, which may be [ -0.5 ℃, +0.5 ℃ ] or [ -1 ℃, +1 ℃ ], it may be determined that the target air-conditioning indoor unit is in a stable operation state.
Step (2): and calculating the change rate of the ambient temperature in the first preset time based on the current set temperature to obtain the current temperature rise rate.
When the target air conditioner indoor unit is in a stable operation state, calculating a current temperature rise rate Δ x in real time based on the ambient temperature and a current set temperature, where the current temperature rise rate Δ x is (T-T)/Δ s, T is the current set temperature, T is the ambient temperature, and Δ s is a first preset time, where a value range of the first preset time may be any value between 1min and 5min, such as 2 min. Whether the target air-conditioning indoor unit is in the stable operation state or not is judged, whether the target air-conditioning indoor unit is in the stable operation state or not can be accurately detected, and the current temperature rise rate is determined when the target air-conditioning indoor unit stably operates, so that the indoor motor rotating speed of the target air-conditioning indoor unit is controlled in a proper time period based on the current temperature rise rate, and the reasonability of motor rotating speed control is improved.
In order to reduce the noise of the target air-conditioning indoor unit and enable the target air-conditioning indoor unit to meet the set temperature requirement of the user, the embodiment provides an implementation manner that the rotation speed of the target air-conditioning indoor unit is controlled based on the current temperature rise rate and the operation parameter so as to reduce the noise of the target air-conditioning indoor unit, and the implementation manner can be specifically executed by referring to the following steps a to c:
step a, obtaining a target rotating speed corresponding to the current temperature rise rate from a preset rotating speed relation table.
The rotating speed relation table comprises a plurality of temperature rise values and the minimum motor rotating speed and the minimum noise value corresponding to each temperature rise value. The preset rotating speed relation table can be obtained according to historical operating data of the target air-conditioning indoor unit or by performing a minimum motor rotating speed test on the target air-conditioning indoor unit, and is shown in the following table:
| minimum noise value/db | Minimum motor speed r/min | Rate of temperature rise |
| D1 | v1 | Δx1 |
| D2 | v2 | Δx2 |
| D3 | v3 | Δx3 |
| D4 | v4 | Δx4 |
| D5 | v5 | Δx5 |
| D… | v… | Δx… |
As shown in table one, the minimum motor rotation speed corresponding to the temperature rise rate Δ x1 is v1, the minimum noise value corresponding to the temperature rise rate Δ x1 is D1, and so on, the minimum motor rotation speed corresponding to the temperature rise rate Δ x5 is v5, and the minimum noise value corresponding to the temperature rise rate Δ x5 is D5. When the temperature rise rate is Δ x1, the minimum motor rotation speed v1 is the minimum motor rotation speed of the indoor motor (which may also be referred to as an optimum motor rotation speed, and the minimum motor rotation speed is greater than the minimum rated rotation speed and less than the rotation speed corresponding to the mute level of the target air conditioning indoor unit), that is, the temperature rise rate of the indoor motor can reach the target temperature rise rate Δ x1 corresponding to the minimum motor rotation speed at the minimum motor rotation speed v1, so that the noise of the indoor motor is reduced to the minimum noise value D1.
In order to obtain a target rotating speed corresponding to the current temperature rise rate, the temperature rise rate with the minimum absolute value of the difference value between the current temperature rise rate and the preset rotating speed relation table can be used as the target temperature rise rate; and taking the minimum motor rotating speed corresponding to the target temperature rise rate in a preset rotating speed relation table as the target rotating speed. And calculating the difference value between the current temperature rise rate delta x and each temperature rise rate in a preset rotating speed relation table, taking the absolute value of the difference value, and taking the temperature rise rate with the minimum absolute value of the difference value between the current temperature rise rate delta x and the current temperature rise rate delta x as a target temperature rise rate, namely taking the temperature rise rate which is closest to the current temperature rise rate delta x in the preset rotating speed relation table as the target temperature rise rate. For example, when | Δ x- Δ x1| among the above-described absolute values of the difference from the current temperature increase rate Δ x is the minimum value, it is determined that the target temperature increase rate corresponding to the current temperature increase rate Δ x is Δ x 1. The minimum motor rotation speed v1 corresponding to the target temperature rise rate Δ x1 is taken as a target rotation speed, and the minimum noise value D1 corresponding to the target temperature rise rate Δ x1 is taken as a target noise value.
The indoor motor of the target air conditioner can be a direct current motor, the lower the rotating speed of the indoor motor is, the smaller the noise value of the indoor unit of the target air conditioner is, the better the comfort experience of a user is, but when the rotating speed of the indoor motor is too low, the heat generation of the motor is too high, the indoor motor is easy to burn, and when the rotating speed of the indoor motor is too low, the air suction superheat degree of the indoor unit of the target air conditioner is small, the liquid return of the compressor is easy to occur, the compressor is further damaged, and therefore the rotating speed regulation of the indoor motor is very necessary. Because the minimum motor rotating speed corresponding to each temperature rise rate in the preset rotating speed relation table is the optimal motor rotating speed, and each minimum motor rotating speed is greater than the minimum rated rotating speed, the noise value is reduced, simultaneously, the rotating speed of the indoor motor is prevented from being too low, the motor and the compressor are prevented from being burnt, and the reliability of controlling the rotating speed of the indoor motor is improved.
And b, determining the suction superheat degree of the target air conditioner indoor unit based on the inlet pipe temperature and the outlet pipe temperature.
And detecting the inlet pipe temperature and the outlet pipe temperature of the target air-conditioning indoor unit in real time, and calculating the difference value of the inlet pipe temperature and the outlet pipe temperature to obtain the suction superheat degree delta t. Whether the target air-conditioning indoor unit has suction superheat is judged according to the suction superheat degree deltat, and the superheat in the suction pipe, which is called harmful superheat, should be minimized.
And c, controlling the rotating speed of the target air-conditioning indoor unit based on the suction superheat degree and the target rotating speed so as to reduce the noise of the target air-conditioning indoor unit.
In order to prevent overheating in a target air-conditioning intake pipe, the rotation speed of the target air-conditioning indoor unit is controlled based on the magnitude of the intake superheat and the target rotation speed so that the intake superheat is within a reasonable temperature range, and the noise of the target air-conditioning indoor unit is reduced while protecting a compressor. In this embodiment, an embodiment of controlling the rotation speed of the target air conditioning indoor unit according to the temperature range in which the suction superheat degree is located is provided, and the following embodiments may be specifically referred to:
the first implementation mode comprises the following steps: and when the suction superheat degree is greater than or equal to the first temperature and less than or equal to the second temperature, finely controlling the rotating speed of the target air-conditioning indoor unit based on the operating current and the target rotating speed so as to reduce the noise of the target air-conditioning indoor unit.
And judging whether the air suction superheat degree delta t is greater than or equal to the first temperature and less than or equal to the second temperature, namely judging whether the air suction superheat degree is in a reasonable temperature range, for example, when the air suction superheat degree is greater than or equal to 1 ℃ and less than or equal to 5 ℃, determining that the air suction superheat degree of the target air-conditioning indoor unit meets the requirement, and finely controlling the rotating speed of the indoor motor based on the running current of the target air-conditioning indoor motor so as to reduce the noise of the target air-conditioning indoor unit.
And when the running current of the motor in the target air-conditioning indoor unit is within the preset current range, controlling the rotating speed of the target air-conditioning indoor unit to be reduced to the target rotating speed so as to enable the noise value of the target air-conditioning indoor unit to be the target noise value. Detecting the running current value I of the indoor motor, judging whether the running current I is in a preset current range, if so, determining that the running current of the indoor motor meets the requirement, controlling the rotating speed of the indoor motor to be reduced to a target rotating speed, wherein the target rotating speed is the corresponding minimum motor rotating speed under the current temperature rise rate, and the minimum motor rotating speed is greater than the minimum rated rotating speed of the motor. Wherein, the predetermined current range may be [ (1-10%) rated current, (1+ 10%) rated current ].
The second embodiment: and c, when the suction superheat degree is larger than a second temperature or the running current is larger than a preset current range, controlling the rotating speed of the target air-conditioning indoor unit to reduce a second rotating speed value, and when the target air-conditioning indoor unit runs for a second preset time, returning to execute the step a.
When the suction superheat degree is higher than a second temperature, the suction superheat degree does not meet the temperature requirement, the rotating speed of the indoor motor is controlled to be reduced to reduce the suction superheat degree, and the second temperature can be 5 ℃. When the operating current is greater than a preset current range, such as when the operating current of the indoor motor is greater than (1+ 10%) rated current, it is determined that the operating current of the indoor motor is excessive, and in order to prevent damage to the motor of the target air conditioning indoor unit, the motor rotation speed is controlled to be reduced such that the operating current of the motor is reduced.
And when the rotating speed of the target air-conditioning indoor unit is controlled to be reduced, the rotating speed of the motor can be controlled to be reduced by a second rotating speed value, the value range of the second rotating speed can be [5r/min, 15r/min ], when the rotating speed of the target air-conditioning indoor unit is reduced by the second rotating speed and the reduced rotating speed is kept for a second preset time, the step a is returned to be executed to recalculate the current temperature rise rate and obtain the minimum rotating speed of the motor corresponding to the current temperature rise rate, so that the automatic noise reduction control of the target air-conditioning indoor unit is realized, and the second preset time can be 10min for example.
The problem that the running current of the indoor motor is too large and further the motor is damaged is avoided by controlling the rotating speed reduction of the indoor motor, the problem that the compressor is damaged by too large suction superheat degree can be avoided, the target rotating speed corresponding to the current temperature rise rate is determined by returning after the rotating speed of the indoor motor is reduced, the self-adaptive control of the rotating speed of the indoor motor can be realized, and the stability of the control of the rotating speed of the indoor motor is improved.
The third embodiment is as follows: and c, when the suction superheat degree is lower than the first temperature or the running current is lower than the preset current range, controlling the rotating speed of the target air-conditioning indoor unit to be increased by a third rotating speed value, and when the target air-conditioning indoor unit runs for a third preset time, returning to execute the step a.
When the suction superheat degree is lower than the first temperature, the suction superheat degree is too low and does not meet the temperature requirement, the rotating speed of the indoor motor is controlled to be increased so as to improve the suction superheat degree, and the first temperature can be 1 ℃. When the running current is smaller than the preset current range, such as when the running current of the indoor motor is smaller than (1-10%) rated current, the running current of the indoor motor is determined to be too small, in order to prevent the too low rotating speed of the indoor motor from causing the too high heating of the motor, the rotating speed of the motor is controlled to be increased so that the rotating speed of the indoor motor is larger than the minimum rated rotating speed, and the reliability of rotating speed control of the target indoor unit of the air conditioner is improved.
And when the rotating speed of the indoor motor is increased, controlling the rotating speed of the indoor motor to increase by a third rotating speed value, wherein the value range of the third rotating speed value can be [5r/min, 15r/min ], and when the rotating speed of the indoor motor is increased by the third rotating speed value and the increased rotating speed is kept for a third preset time, returning to execute the step a, wherein the third preset time can be 10min for example. The indoor motor is enabled to keep the adjusted rotating speed to run for a period of time, the flow of the refrigerant in the pipeline can be changed, the current temperature rise rate is further changed, the minimum motor rotating speed corresponding to the current temperature rise rate is obtained by returning and executing after the current temperature rise rate is changed, the rotating speed of the indoor motor can be reduced as far as possible while the temperature requirement of a user is met, the noise value is made to be as small as possible, and the comfort experience of the user is improved.
According to the noise reduction control method for the indoor unit of the air conditioner, when the target indoor unit of the air conditioner stably operates, the temperature rise rate, the air suction superheat degree and the operating current of the indoor motor of the target indoor unit of the air conditioner are detected, the reasonable motor rotating speed is automatically set based on the temperature rise rate, the air suction superheat degree, the operating current of the indoor motor and a preset rotating speed relation table, the indoor motor is finely adjusted within a small range, the self-adaptive control of the rotating speed of the indoor motor of the target indoor unit of the air conditioner is achieved, the noise value of the target indoor unit of the air conditioner is reduced, and the comfort of the target indoor unit of the air conditioner is improved.
Example two:
corresponding to the noise reduction control method for the indoor unit of the air conditioner provided in the first embodiment, the embodiment of the present invention provides an example of applying the noise reduction control method for the indoor unit of the air conditioner to perform adaptive control on the rotating speed of an indoor motor of a variable frequency air conditioner, and the following steps 1 to 4 may be specifically referred to:
step 1, when the variable frequency air conditioner is in a stable operation state, detecting indoor environment temperature and current set temperature input by a user, calculating the current temperature rise rate in real time according to the environment temperature and the current set temperature, and acquiring a target rotating speed corresponding to the current temperature rise rate from a preset rotating speed relation table.
Step 2, detecting the pipe inlet temperature and the pipe outlet temperature of the indoor unit of the variable frequency air conditioner in real time, calculating the air suction superheat degree according to the pipe inlet temperature and the pipe outlet temperature, judging whether the air suction superheat degree delta t meets the condition that delta t is larger than or equal to 1 ℃ and smaller than or equal to 5 ℃, and if so, executing the step 3; if not, when the suction superheat degree delta t is larger than 5 ℃, controlling the rotating speed of the indoor unit to be reduced by 5r/min, and after the indoor unit operates for 10min, returning to execute the step 1; and when the suction superheat delta t is less than 1 ℃, controlling the rotating speed of the indoor unit to be increased by 5r/min, and after the indoor unit operates for 10min, returning to execute the step 1.
Step 3, detecting the running current of the indoor motor, judging whether the running current is in the range of [ (1-10%) rated current, (1+ 10%) rated current ], and if so, executing step 4; if not, when the running current of the indoor motor is greater than (1+ 10%) rated current, controlling the rotating speed of the indoor unit to be reduced by 5r/min, and after the indoor unit runs for 10min, returning to execute the step 1; and when the running current of the indoor motor is less than (1-10%) rated current, controlling the rotating speed of the indoor unit to be increased by 5r/min, and after the indoor unit runs for 10min, returning to execute the step 1.
And 4, controlling the rotating speed of the indoor motor to be reduced to a target rotating speed so as to reduce the noise value of the variable frequency air conditioner.
According to the indoor motor rotating speed self-adaptive control method of the variable frequency air conditioner, the rotating speed of the indoor motor of the variable frequency air conditioner can be self-adaptively controlled according to the temperature rise rate, the motor running current and the suction superheat degree of the variable frequency air conditioner.
Example three:
corresponding to the noise reduction control method for the indoor unit of the air conditioner provided in the first embodiment, an embodiment of the present invention provides a noise reduction control device for an indoor unit of an air conditioner, where the device may be applied to a target indoor unit of an air conditioner, and refer to a schematic structural diagram of the noise reduction control device for the indoor unit of the air conditioner shown in fig. 2, where the device includes the following modules:
and the temperature rise rate determining module 21 is configured to determine whether the target air-conditioning indoor unit is in a stable operation state, obtain an indoor ambient temperature of the target air-conditioning indoor unit if the target air-conditioning indoor unit is in the stable operation state, and determine a current temperature rise rate based on the ambient temperature and a current set temperature.
The rotating speed control module 22 is used for acquiring the operating parameters of the target air-conditioning indoor unit and controlling the rotating speed of the target air-conditioning indoor unit based on the current temperature rise rate and the operating parameters so as to reduce the noise of the target air-conditioning indoor unit; the operation parameters comprise inlet pipe temperature and outlet pipe temperature of the target air-conditioning indoor unit and operation current of the target air-conditioning indoor unit.
According to the noise reduction control method for the indoor unit of the air conditioner, when the target indoor unit of the air conditioner is in a stable operation state, the current temperature rise rate is calculated according to the indoor environment temperature and the current set temperature, the rotating speed of the target indoor unit of the air conditioner can be automatically controlled according to the current temperature rise rate, the pipe inlet temperature, the pipe outlet temperature and the operation current of the indoor motor, the reasonability of the determination of the rotating speed of the target indoor unit of the air conditioner is improved, the noise of the target indoor unit of the air conditioner is reduced, and the comfort experience of a user is improved.
In an embodiment, the temperature rise rate determining module 21 is further configured to obtain an operation time of the target air-conditioning indoor unit, and when the operation time reaches a preset time, or obtain an ambient temperature of an indoor location where the target air-conditioning indoor unit is located, and when a difference between the ambient temperature and a current set temperature is within a preset range, determine that the target air-conditioning indoor unit is in a stable operation state; and calculating the change rate of the ambient temperature in the first preset time based on the current set temperature to obtain the current temperature rise rate.
In one embodiment, the rotational speed control module 22 includes:
the acquisition unit is used for acquiring a target rotating speed corresponding to the current temperature rise rate from a preset rotating speed relation table; the rotating speed relation table comprises a plurality of temperature rise values and a minimum motor rotating speed and a minimum noise value corresponding to each temperature rise value.
And a determination unit for determining the suction superheat degree of the target air conditioning indoor unit based on the inlet pipe temperature and the outlet pipe temperature.
And the control unit is used for controlling the rotating speed of the target air-conditioning indoor unit based on the suction superheat degree and the target rotating speed so as to reduce the noise of the target air-conditioning indoor unit.
In one embodiment, the control unit is further configured to finely control the rotation speed of the target air-conditioning indoor unit based on the operation current and the target rotation speed so as to reduce the noise of the target air-conditioning indoor unit when the suction superheat degree is equal to or higher than the first temperature and equal to or lower than the second temperature.
In an embodiment, the control unit is further configured to control the target air conditioning indoor unit rotation speed to decrease to the target rotation speed when the operating current is within a preset current range, so that the noise value of the target air conditioning indoor unit is the target noise value.
In an embodiment, the control unit is further configured to control the rotation speed of the target air-conditioning indoor unit to decrease by a second rotation speed value when the suction superheat degree is greater than a second temperature or when the operation current is greater than a preset current range, and calculate the current temperature rise rate when the target air-conditioning indoor unit operates for a second preset time, and input the calculated current temperature rise rate to the obtaining unit.
In an embodiment, the control unit is further configured to control the rotation speed of the target air-conditioning indoor unit to increase by a third rotation speed value when the suction superheat degree is less than the first temperature or when the operation current is less than the preset current range, and calculate the current temperature rise rate when the target air-conditioning indoor unit operates for a third preset time, and input the calculated current temperature rise rate to the obtaining unit.
According to the noise reduction control device for the indoor unit of the air conditioner, when the target indoor unit of the air conditioner stably operates, the temperature rise rate, the air suction superheat degree and the operating current of the indoor motor of the target indoor unit of the air conditioner are detected, the reasonable motor rotating speed is automatically set based on the temperature rise rate, the air suction superheat degree, the operating current of the indoor motor and a preset rotating speed relation table, the indoor motor is finely adjusted within a small range, the self-adaptive control of the rotating speed of the indoor motor of the target indoor unit of the air conditioner is achieved, the noise value of the target indoor unit of the air conditioner is reduced, and the comfort of the target indoor unit of the air conditioner is improved.
Example four:
corresponding to the control of the indoor unit of the air conditioner provided in the first embodiment, the present embodiment provides an air conditioner, which includes a computer readable storage medium storing a computer program and a processor, where the computer program is read by the processor and executed to implement the noise reduction control method of the indoor unit of the air conditioner provided in the first embodiment.
Example five:
the present embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned noise reduction control method for an indoor unit of an air conditioner, and can achieve the same technical effect, and in order to avoid repetition, the 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, in this document, relational terms such as first and second, and the like are 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 noise reduction control device of the air conditioner indoor unit and the air conditioner disclosed by the embodiment correspond to the noise reduction control method of the air conditioner indoor unit disclosed by the embodiment, so that the description is relatively simple, and the relevant points can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
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 (9)
1. A noise reduction control method for an indoor unit of an air conditioner is characterized by comprising the following steps:
judging whether a target air-conditioning indoor unit is in a stable operation state, if so, acquiring the indoor environment temperature of the target air-conditioning indoor unit, and determining the current temperature rise rate based on the environment temperature and the current set temperature;
acquiring operation parameters of the target air-conditioning indoor unit, and controlling the rotating speed of the target air-conditioning indoor unit based on the current temperature rise rate and the operation parameters so as to reduce the noise of the target air-conditioning indoor unit; the operation parameters comprise an inlet pipe temperature and an outlet pipe temperature of the target air-conditioning indoor unit and an operation current of the target air-conditioning indoor unit, wherein the inlet pipe temperature is the inlet temperature of an air suction pipeline of the target air-conditioning compressor, and the outlet pipe temperature is the outlet temperature of the air suction pipeline of the target air-conditioning compressor;
the step of controlling the rotating speed of the target air-conditioning indoor unit based on the current temperature rise rate and the operation parameters to reduce the noise of the target air-conditioning indoor unit comprises the following steps:
step a, acquiring a target rotating speed corresponding to the current temperature rise rate from a preset rotating speed relation table; the rotating speed relation table comprises a plurality of temperature rise values, and a minimum motor rotating speed and a minimum noise value corresponding to each temperature rise value; the target rotating speed is the minimum motor rotating speed corresponding to the current temperature rise rate in the preset rotating speed relation table;
b, determining the suction superheat degree of the target air conditioner indoor unit based on the inlet pipe temperature and the outlet pipe temperature;
and c, controlling the rotating speed of the target air-conditioning indoor unit based on the suction superheat degree and the target rotating speed so as to reduce the noise of the target air-conditioning indoor unit.
2. The noise reduction control method for an indoor unit of an air conditioner as claimed in claim 1, wherein the step of determining whether a target indoor unit of an air conditioner is in a stable operation state, if so, obtaining an ambient temperature of a room where the target indoor unit of the air conditioner is located, and determining a current temperature rise rate based on the ambient temperature and a current set temperature includes:
the method comprises the steps of obtaining the running time of a target air-conditioning indoor unit, obtaining the indoor environment temperature of the target air-conditioning indoor unit when the running time reaches the preset time, and determining that the target air-conditioning indoor unit is in a stable running state when the difference value between the environment temperature and the current set temperature is within the preset range;
and calculating the change rate of the ambient temperature within first preset time based on the current set temperature to obtain the current temperature rise rate.
3. The noise reduction control method for an indoor unit of an air conditioner according to claim 1, wherein the step of controlling the rotation speed of the target indoor unit of the air conditioner based on the degree of superheat of suction air and the target rotation speed to reduce the noise of the target indoor unit of the air conditioner comprises:
and when the suction superheat degree is greater than or equal to a first temperature and less than or equal to a second temperature, finely controlling the rotating speed of the target air-conditioning indoor unit based on the running current and the target rotating speed so as to reduce the noise of the target air-conditioning indoor unit.
4. The noise reduction control method for an indoor unit of an air conditioner according to claim 3, wherein the step of finely controlling the rotation speed of the target indoor unit of the air conditioner based on the operation current and the target rotation speed to reduce the noise of the target indoor unit of the air conditioner comprises:
and when the running current is within a preset current range, controlling the rotating speed of the target air-conditioning indoor unit to be reduced to the target rotating speed so as to enable the noise value of the target air-conditioning indoor unit to be a target noise value.
5. The noise reduction control method of an air conditioning indoor unit of claim 1, wherein the step of controlling the rotation speed of the target air conditioning indoor unit based on the suction superheat degree and the target rotation speed comprises:
and when the suction superheat degree is larger than a second temperature or the running current is larger than a preset current range, controlling the rotating speed of the target air-conditioning indoor unit to reduce a second rotating speed value, and returning to execute the step a when the target air-conditioning indoor unit runs for a second preset time.
6. The noise reduction control method of an air conditioning indoor unit of claim 1, wherein the step of controlling the rotation speed of the target air conditioning indoor unit based on the suction superheat degree and the target rotation speed comprises:
and when the suction superheat degree is smaller than a first temperature or the running current is smaller than a preset current range, controlling the rotating speed of the target air-conditioning indoor unit to be increased by a third rotating speed value, and returning to execute the step a when the target air-conditioning indoor unit runs for a third preset time.
7. The noise reduction control method for an indoor unit of an air conditioner as claimed in claim 1, wherein the step of obtaining the target rotation speed corresponding to the current temperature rise rate from a preset rotation speed relationship table comprises:
taking the temperature rise rate with the minimum absolute value of the difference value between the current temperature rise rate and the preset rotating speed relation table as a target temperature rise rate;
and taking the minimum motor rotating speed corresponding to the target temperature rise rate in the preset rotating speed relation table as the target rotating speed.
8. The utility model provides a machine noise reduction control device in air conditioning which characterized in that includes:
the temperature rise rate determining module is used for judging whether the target air-conditioning indoor unit is in a stable operation state, if so, acquiring the indoor environment temperature of the target air-conditioning indoor unit, and determining the current temperature rise rate based on the environment temperature and the current set temperature;
the rotating speed control module is used for acquiring the operating parameters of the target air-conditioning indoor unit and controlling the rotating speed of the target air-conditioning indoor unit based on the current temperature rise rate and the operating parameters so as to reduce the noise of the target air-conditioning indoor unit; the operation parameters comprise an inlet pipe temperature and an outlet pipe temperature of the target air-conditioning indoor unit and an operation current of the target air-conditioning indoor unit, wherein the inlet pipe temperature is the inlet temperature of an air suction pipeline of the target air-conditioning compressor, and the outlet pipe temperature is the outlet temperature of the air suction pipeline of the target air-conditioning compressor;
the rotating speed control module is used for acquiring a target rotating speed corresponding to the current temperature rise rate from a preset rotating speed relation table; the rotating speed relation table comprises a plurality of temperature rise values, and a minimum motor rotating speed and a minimum noise value corresponding to each temperature rise value; the target rotating speed is the minimum motor rotating speed corresponding to the current temperature rise rate in the preset rotating speed relation table; determining the suction superheat degree of the target air-conditioning indoor unit based on the inlet pipe temperature and the outlet pipe temperature; and controlling the rotating speed of the target air-conditioning indoor unit based on the suction superheat degree and the target rotating speed so as to reduce the noise of the target air-conditioning indoor unit.
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.
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| CN113531860B (en) * | 2021-07-15 | 2022-10-25 | 珠海格力电器股份有限公司 | Noise reduction control method of air conditioner and air conditioner |
| CN115200147B (en) * | 2022-06-30 | 2023-11-10 | 珠海格力电器股份有限公司 | Control method of air conditioner floor heating system and air conditioner floor heating system |
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| CN103245031B (en) * | 2012-02-06 | 2015-11-11 | 珠海格力电器股份有限公司 | Air-conditioner and control method thereof and device |
| CN104896665B (en) * | 2015-05-26 | 2017-12-22 | 美的集团武汉制冷设备有限公司 | The control method and device of air conditioner |
| CN105241007B (en) * | 2015-09-29 | 2018-01-26 | 海信（广东）空调有限公司 | A kind of control method for frequency conversion air conditioner and device |
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| KR102071963B1 (en) * | 2018-03-09 | 2020-01-31 | 엘지전자 주식회사 | Coolant noise reduction type air conditioner indoor unit and control method thereof |
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