CN106871361B - Control method of air conditioner - Google Patents
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- CN106871361B CN106871361B CN201710132269.9A CN201710132269A CN106871361B CN 106871361 B CN106871361 B CN 106871361B CN 201710132269 A CN201710132269 A CN 201710132269A CN 106871361 B CN106871361 B CN 106871361B
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- 239000003570 air Substances 0.000 description 65
- 230000001276 controlling effect Effects 0.000 description 16
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000037323 metabolic rate Effects 0.000 description 3
- 230000035807 sensation Effects 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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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
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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
-
- 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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Atmospheric Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method of an air conditioner, which comprises the following steps: controlling the air conditioner to enter a comfort control mode; controlling an air conditioner to adjust the indoor temperature to a set temperature; determining a current PMV value; and adjusting the set temperature according to the determined PMV value. According to the control method of the air conditioner, the air conditioner can meet the requirement of user comfort, and meanwhile, the air conditioner can run in an energy-saving mode, and energy consumption is reduced.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a control method of an air conditioner.
Background
The control and regulation of the air conditioner to the indoor temperature in the prior art are generally realized by regulating the frequency of a compressor, the rotating speed of a fan or the opening of a throttle valve, and during regulation, the temperature is often only required to reach a comfortable requirement, so that when the air conditioner completes regulation, although the indoor temperature reaches the set temperature, a user does not feel particularly comfortable due to poor coordination among various operation parameters of the air conditioner, and the existing air conditioner has the defects of rough regulation during operation, high energy consumption and difficulty in meeting the requirement of energy-saving operation.
Disclosure of Invention
The invention aims to provide a control method of an air conditioner, which can enable the air conditioner to meet the requirement of user comfort, and meanwhile, the air conditioner can run in an energy-saving manner, so that the energy consumption is reduced.
According to an aspect of the present invention, there is provided a control method of an air conditioner, including: controlling the air conditioner to enter a comfort control mode; controlling an air conditioner to adjust the indoor temperature to a set temperature; determining a current PMV value; and adjusting the set temperature according to the determined PMV value.
Preferably, the controlling the air conditioner to adjust the indoor temperature to the set temperature includes: acquiring the current indoor temperature; detecting a temperature deviation between the current indoor temperature and a set temperature; and adjusting the indoor temperature according to the temperature deviation.
Preferably, the step of adjusting the indoor temperature according to the temperature deviation is implemented by PID control.
Preferably, the step of adjusting the set temperature according to the determined PMV value comprises: when PMV is greater than T1, controlling the set temperature to fall by a ℃; when PMV is less than T2, controlling the set temperature to rise by b ℃; when the PMV is more than or equal to T2 and less than or equal to T1, keeping the current set temperature; the PMV was checked every t 1.
Preferably, the step of adjusting the indoor temperature according to the temperature deviation includes: detecting the current compressor running frequency; and adjusting the running frequency of the compressor according to the temperature deviation.
Preferably, the step of adjusting the indoor temperature according to the temperature deviation includes: detecting the current wind speed; and adjusting the wind speed according to the temperature deviation.
Preferably, the step of determining the current PMV value comprises: acquiring current indoor temperature, wind speed, relative humidity and radiation temperature; the current PMV is determined from the indoor temperature, wind speed, relative humidity and radiation temperature.
Preferably, after determining the current PMV value, the step of adjusting the set temperature according to the determined PMV value further comprises: acquiring temperature compensation information; compensating the current indoor temperature according to the temperature compensation information; and determining the current PMV according to the adjusted indoor temperature.
Preferably, the step of controlling the air conditioner to enter the comfort control mode includes: starting the air conditioner; setting a set temperature; controlling the air conditioner to operate for t2 time until the air conditioner stably operates; and controlling the air conditioner to enter a comfort control mode.
In the invention, the PMV is adopted to control the temperature regulation of the air conditioner, so that the indoor environment can be quickly regulated to a comfortable range value, the use experience of a user is improved, meanwhile, the energy-saving control of the air conditioner can be realized, the fine control of the air conditioner is realized, the running frequency of the air conditioner and the rotating speed of a fan can stably run with smaller numerical values, and the electric energy can be saved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a control logic diagram of an air conditioner according to an embodiment of the present invention.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. 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 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, 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, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. The embodiments 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. As for the methods, products and the like disclosed by the embodiments, the description is simple because the methods correspond to the method parts disclosed by the embodiments, and the related parts can be referred to the method parts for description.
PMV (Predicted Mean volume average thermal sensation index) is an evaluation index for representing human thermal response (thermal sensation), and represents the average of the thermal sensations of most people in the same environment.
The wind speed in the present application is a wind speed around the periphery of the human body. The air conditioner has the advantages that the air outlet of the air conditioner is provided with the air speed sensor, the control precision of the air speed sensor can be 0.01m/s, the air conditioner can comprise a detection mechanism such as an infrared sensor, the distance between the moving position of indoor personnel and the air outlet of the air conditioner can be detected, and the air speed value of the peripheral side of a human body can be obtained through the air speed of the air outlet and the relative position of the personnel and the air conditioner.
Referring to fig. 1 and 2 in combination, according to an embodiment of the present invention, a control method of an air conditioner includes: controlling the air conditioner to enter a comfort control mode; controlling an air conditioner to adjust the indoor temperature to a set temperature; determining a current PMV value; and adjusting the set temperature according to the determined PMV value.
According to the invention, the PMV is adopted to control the temperature regulation of the air conditioner, the indoor temperature is accurately controlled in real time according to the PMV range in a comfortable state, so that the indoor environment can be quickly regulated to a comfortable range value, the human body feeling can be more comfortable, the use experience of a user can be further improved, meanwhile, the energy-saving control of the air conditioner can be realized, the fine control of the air conditioner is realized, the running frequency of the air conditioner and the rotating speed of a fan can stably run at smaller values, and the electric energy can be saved.
The step of controlling the air conditioner to adjust the indoor temperature to the set temperature includes: acquiring the current indoor temperature; detecting a temperature deviation between the current indoor temperature and a set temperature; and adjusting the indoor temperature according to the temperature deviation. Preferably, the step of adjusting the indoor temperature according to the temperature deviation is implemented by PID (proportional integral derivative) control.
Through detecting the temperature deviation between the current indoor temperature and the set temperature, the rapid adjustment of the indoor temperature can be realized according to the temperature deviation, so that the indoor temperature can be rapidly adjusted to the set temperature. In this embodiment, the indoor temperature is adjusted by PID control, which can accurately control the indoor temperature by PID control, thereby improving the indoor temperature adjustment efficiency. Of course, the indoor temperature may be adjusted by PI (proportional integral) control, PD (proportional differential) control, or the like.
After the indoor temperature reaches the set temperature, although the temperature reaches the requirement, factors in various aspects such as the indoor wind speed, the temperature, the humidity and the radiation temperature may not be adjusted in place, so that the PMV value is out of the set range, and at the moment, the phenomenon of user discomfort still occurs, and meanwhile, the problems of low operation efficiency and the like of the air conditioner are caused, so that the purpose of energy saving is difficult to achieve, and the energy efficiency ratio of the air conditioner is reduced. Therefore, at this time, the set temperature needs to be adjusted again, and other parameters need to be adjusted accordingly, so that the finally obtained PMV value reaches the set PMV value range, and thus the indoor environment is in a comfortable range, and a user obtains better use experience.
In this embodiment, the step of adjusting the set temperature according to the determined PMV value includes: when PMV is greater than T1, controlling the set temperature to fall by a ℃; when PMV is less than T2, controlling the set temperature to rise by b ℃; when the PMV is more than or equal to T2 and less than or equal to T1, keeping the current set temperature; the PMV was checked every t 1. The set temperature is adjusted once per detection, and is also adjusted once in one detection period. For example, when the PMV > T1 is detected for the first time, the set temperature is controlled to drop a ℃ once, and then the PMV value is detected again at time T1, if the PMV > T1 is still detected, the set temperature is controlled to drop a ℃ once again in the period, so that the adjustment of the set temperature can ensure that the PMV value is gradually adjusted to be in the comfort range.
The above-mentioned T1 is, for example, 0.5, T2 is, for example, -0.5, and T1 is, for example, 10 minutes. a is, for example, 0.4, and b is, for example, 0.4, however, the above numerical values may be adjusted as needed, and may be specifically set according to the model or the like.
When the air conditioner detects the indoor temperature once every 10 minutes, the indoor temperature can be adjusted by adjusting the running frequency of the compressor, the wind speed of the fan and/or the opening of the throttle valve, and when different parameters are selected, the control strategy can be correspondingly adjusted.
When the indoor temperature is adjusted by adjusting the operating frequency of the compressor, the adjusting the indoor temperature according to the temperature deviation includes: detecting the current compressor running frequency; and adjusting the running frequency of the compressor according to the temperature deviation.
The step of adjusting the indoor temperature according to the temperature deviation includes: detecting the current wind speed; and adjusting the wind speed according to the temperature deviation.
The step of determining the current PMV value comprises: acquiring current indoor temperature, wind speed, relative humidity and radiation temperature; the current PMV is determined from the indoor temperature, wind speed, relative humidity and radiation temperature.
Wherein, the current PMV is determined according to the indoor temperature, the wind speed, the relative humidity and the radiation temperature according to the following formula:
wherein, M is the metabolic rate, unit: w/s; w is the power of human body, unit: w/s; paIs the partial pressure of water vapor in ambient air, unit: pa; t is taIs the indoor temperature in units;
fclthe ratio of the surface area of the dressed human body to the surface area of the naked body;
average radiant temperature in units; t is tclAverage temperature of the outer surface of the human body after dressing in unit; h iscConvective heat transfer coefficient, W/s.m2℃。
The M range is: 116 to 197.258W/m2. W is typically taken to be 0.
Partial pressure P of water vapor in ambient airaCalculated according to the following formula:
Pa＝φa.Ps
φais the relative humidity;
the ratio f of the surface area of the body to the surface area of the naked bodyclCalculated according to the following formula:
wherein IclFor clothing thermal resistance, 0.9clo is generally adopted in winter, 0.5clo is adopted in summer, and 0.155k.m is adopted in 1clo in northern part2/w。
Mean radiant temperature
On the premise of ensuring the stability of the PMV value, the average radiation temperature and the indoor temperature are in inverse proportion, and the influence of the indoor temperature on the PMV value is larger.
Average temperature t of outer surface of dressed human bodyclCalculated according to the following formula:
wherein the content of the first and second substances,
surface heat transfer coefficient hcCalculated according to the following formula:
wherein V is the wind speed. Wind speed v is less than 0.15m/s in winter, and less than 0.25m/s in summer, and is generally 0.15m/s in winter and 0.25m/s in summer.
There are generally 6 factors affecting the thermal comfort of the human body: indoor temperature, wind speed, relative humidity, radiation temperature, human body metabolic rate and clothing thermal resistance. And the human body metabolic rate and the clothing thermal resistance are generally set as constants when designing the air conditioner. Therefore, the current PMV can be determined according to the indoor temperature, the wind speed, the relative humidity and the radiation temperature, and the indoor temperature and the relative humidity are adjusted, so that the PMV is in a range that a human body feels comfortable, and the comfort of the operation of the air conditioner is improved.
After the current PMV value is determined, the step of adjusting the set temperature according to the determined PMV value further comprises: acquiring temperature compensation information; compensating the current indoor temperature according to the temperature compensation information; and determining the current PMV according to the adjusted indoor temperature. When the air conditioner adjusts the set temperature according to the PMV, the situation that the set temperature is actively adjusted by a user may be met, for the situation, the temperature adjustment quantity of the user can be obtained, and then the temperature adjustment quantity is taken as temperature compensation information and is taken together as a calculation parameter of the PMV in combination with the current set temperature value to calculate the PMV, so that the PMV can be adjusted in combination with the needs of the user, real-time, rapid and accurate adjustment of the indoor temperature is achieved, the indoor temperature adjustment can better meet the differentiation requirements of various users, and the user can obtain better use experience.
The step of controlling the air conditioner to enter the comfort control mode includes: starting the air conditioner; setting a set temperature; controlling the air conditioner to operate for t2 time until the air conditioner stably operates; and controlling the air conditioner to enter a comfort control mode. During the initial start-up of the air conditioner, the operation of the air conditioner is unstable, and thus it is not necessary to control the air conditioner to enter the comfort control mode at this time. After the air conditioner operates for t2 time, each operating parameter is stabilized, and the indoor temperature reaches the set temperature stably, the comfort control mode of the air conditioner can be started, so that the air conditioner determines whether the operating parameters of the air conditioner need to be adjusted according to the PMV value obtained by the current indoor temperature, and the more energy-saving and efficient air conditioner operation effect can be obtained. T2 here is, for example, 30 min.
The control method of the air conditioner of the present invention is explained with reference to fig. 2 as follows:
firstly, the air conditioner receives a set temperature, then adjusts the frequency of the compressor by taking the set temperature as a target through a PID control mode, then obtaining corresponding temperature variation, wind speed variation and relative humidity variation according to the adjusted compressor frequency, obtaining the adjusted actual temperature value, then returning the regulated actual temperature to the set temperature for comparison, regulating the running frequency of the compressor according to the comparison result until the indoor temperature is regulated to the set temperature range, then obtaining the current indoor temperature, wind speed, relative humidity, radiation temperature and the like, obtaining the PMV value under the current operating environment according to the current indoor temperature, wind speed, relative humidity, radiation temperature and the like, and then determining a set temperature value to be adjusted according to the PMV value, and transmitting the temperature correction value to the current set temperature so as to adjust the current set temperature. After the set temperature is adjusted once according to the current PMV value, the indoor temperature is detected again after 10 minutes, the corresponding PMV value is obtained, and then the set temperature is adjusted again according to the PMV value, so that the circulation adjustment is carried out, and the indoor environment can be always maintained in the optimal comfort range.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. A method of controlling an air conditioner, comprising:
controlling the air conditioner to enter a comfort control mode;
controlling an air conditioner to adjust the indoor temperature to a set temperature;
acquiring temperature compensation information;
compensating the current indoor temperature according to the temperature compensation information;
determining the current PMV according to the adjusted indoor temperature;
adjusting the set temperature according to the determined PMV value;
wherein the temperature compensation information includes a temperature adjustment amount of the user.
2. The control method according to claim 1, wherein the step of controlling the air conditioner to adjust the indoor temperature to the set temperature includes:
acquiring the current indoor temperature;
detecting a temperature deviation between the current indoor temperature and a set temperature;
and adjusting the indoor temperature according to the temperature deviation.
3. The control method according to claim 2, wherein the step of adjusting the indoor temperature according to the temperature deviation is implemented by PID control.
4. The control method of claim 1, wherein the step of adjusting the set temperature in accordance with the determined PMV value comprises:
when PMV is greater than T1, controlling the set temperature to fall by a ℃;
when PMV is less than T2, controlling the set temperature to rise by b ℃;
when the PMV is more than or equal to T2 and less than or equal to T1, keeping the current set temperature;
the PMV was checked every t 1.
5. The control method according to claim 2, wherein the step of adjusting the indoor temperature according to the temperature deviation includes:
detecting the current compressor running frequency;
and adjusting the running frequency of the compressor according to the temperature deviation.
6. The control method according to claim 2, wherein the step of adjusting the indoor temperature according to the temperature deviation includes:
detecting the current wind speed;
and adjusting the wind speed according to the temperature deviation.
7. The control method of claim 1, wherein the step of determining a current PMV value comprises:
acquiring current indoor temperature, wind speed, relative humidity and radiation temperature;
the current PMV is determined from the indoor temperature, wind speed, relative humidity and radiation temperature.
8. The control method according to claim 1, wherein the step of controlling the air conditioner to enter a comfort control mode comprises:
starting the air conditioner;
setting a set temperature;
controlling the air conditioner to operate for t2 time until the air conditioner stably operates;
and controlling the air conditioner to enter a comfort control mode.
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| CN110701750B (en) * | 2019-10-23 | 2021-07-20 | 广东美的制冷设备有限公司 | Operation control method, operation control device, air conditioner, and storage medium |
| CN112856775A (en) * | 2021-02-02 | 2021-05-28 | 青岛海尔空调器有限总公司 | Control method of air conditioner with indoor unit provided with double heat exchangers and air conditioner |
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| CN105987482A (en) * | 2015-02-05 | 2016-10-05 | 青岛海尔空调电子有限公司 | Air conditioner control method and air conditioner |
| CN106369766A (en) * | 2016-10-31 | 2017-02-01 | 广州华凌制冷设备有限公司 | Adjusting method and adjusting device for operating parameters of air conditioner and terminal |
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Effective date of registration: 20200910 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Co-patentee after: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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Effective date of registration: 20201103 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee before: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. |