CN104848482A - Preheating control method of air conditioner compressor - Google Patents
Preheating control method of air conditioner compressor Download PDFInfo
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- CN104848482A CN104848482A CN201510221985.5A CN201510221985A CN104848482A CN 104848482 A CN104848482 A CN 104848482A CN 201510221985 A CN201510221985 A CN 201510221985A CN 104848482 A CN104848482 A CN 104848482A
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Classifications
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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
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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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
Abstract
The invention discloses a preheating control method of an air conditioner compressor. The method comprises the following steps: judging a compressor state; judging a temperature condition when the compressor state is a preheating-required state; starting a compressor preheating control when the temperature conditioner is a preheating-required condition; closing the compressor preheating control when the compressor state is a state without requiring the preheating, or when the compressor state is the preheating-required state but the temperature condition is a condition without requiring the preheating. By using the preheating control method of the air conditioner compressor, the power consumption of preheating the compressor can be reduced upon normally starting the compressor.
Description
Technical field
The invention belongs to air-conditioning technique field, specifically relate to compressor of air conditioner control method, in particular, relate to compressor of air conditioner preheating control method.
Background technology
At present, most air-conditioning is all provided with compressor preheating controlling functions, affects air-conditioning normally work to prevent compressor from can not start at low ambient temperatures.
But according to the height of ambient temperature, existing air-conditioning just judges whether that performing compressor preheating controls, and can cause the waste of pre-heat power consumption.Tracing it to its cause, is that compressor also can start without the need to preheating at low temperatures due to the constantly progress of compressor lubricant oil technique on the one hand, is on the other hand also may start without the need to preheating at low temperatures under the different running status of compressor.Therefore, the simple ambient temperature that relies on, as factor of judgment, causes opening preheat function when also can start without the need to pre-thermocompressor, thus causes power attenuation.
Summary of the invention
The object of this invention is to provide a kind of compressor of air conditioner preheating control method, while normal startup compressor, reduce the power consumption of compressor preheating.
For achieving the above object, the present invention adopts following technical proposals to be achieved:
A kind of compressor of air conditioner preheating control method, described method comprises:
Judge compressor state;
When described compressor state is for needing preheat mode, then judge temperature conditions;
When described temperature conditions is for needing preheating condition, starts compressor preheating and controlling;
Be without the need to preheat mode in described compressor state, or described compressor state for need preheat mode but described temperature conditions for during without the need to preheating condition, close compressor warm-up control.
Method as above, described compressor state, for needing preheat mode, is specially:
Meet compressor power on first service condition, compressor operating time be less than the first setting-up time after halt condition, compressor operating time shut down and the arbitrary condition be greater than downtime in the second setting-up time condition after being not less than described first setting-up time;
Described compressor state is without the need to preheat mode, is specially:
Compressor power on first service condition, compressor operating time be less than the first setting-up time after halt condition, compressor operating time is shut down after being not less than described first setting-up time and the second setting-up time condition that is greater than downtime does not all meet.
Method as above, described temperature conditions, for needing preheating condition, is specially:
Outdoor environment temperature is less than the first design temperature, and the defrosting temperature of air-conditioner outdoor unit is greater than the temperature venting one's pent-up feelings of compressor;
Described temperature conditions is without the need to preheating condition, is specially:
Outdoor environment temperature is not less than described first design temperature, or, outdoor environment temperature be less than described first design temperature but the temperature venting one's pent-up feelings of compressor be greater than air-conditioner outdoor unit defrosting temperature and feel elated and exultant temperature with defrosting temperature difference be greater than the second design temperature.
Method as above, when described compressor state is for needing preheat mode, if described temperature conditions meet outdoor environment temperature is less than described first design temperature, the temperature venting one's pent-up feelings of compressor is greater than air-conditioner outdoor unit defrosting temperature and temperature of feeling elated and exultant is not more than described second design temperature with the difference of defrosting temperature time, keep compressor preheating to control constant.
Method as above, described maintenance compressor preheating controls constant, is specially:
If start in compressor preheating control procedure, described temperature conditions meets outdoor environment temperature is less than described first design temperature, the temperature venting one's pent-up feelings of compressor is greater than air-conditioner outdoor unit defrosting temperature and temperature of feeling elated and exultant is not more than described second design temperature with the difference of defrosting temperature, continue to perform compressor preheating to control, until described temperature conditions is without the need to preheating condition;
If in close compressor warm-up control process, described temperature conditions meets outdoor environment temperature is less than described first design temperature, the temperature venting one's pent-up feelings of compressor is greater than air-conditioner outdoor unit defrosting temperature and temperature of feeling elated and exultant is not more than described second design temperature with the difference of defrosting temperature, continue close compressor warm-up control, until described temperature conditions is for needing preheating condition.
Method as above, described startup compressor preheating controls, and is specially: control the work of compressor stator coil electricity; Described close compressor warm-up control, is specially: control compressor stator coil blackout.
Method as above, the work of described control compressor stator coil electricity, is specially: utilize pwm signal to control the work of compressor stator coil electricity, and according to the difference of described outdoor environment temperature, controls the dutycycle of described pwm signal.
Method as above, the described difference according to described outdoor environment temperature, controls the dutycycle of described pwm signal, is specially:
If described outdoor environment temperature is less than described first design temperature and be greater than the 3rd design temperature, the dutycycle controlling described pwm signal is less than 50%;
If described outdoor environment temperature is less than or equal to described 3rd design temperature and is greater than the 4th design temperature, the dutycycle controlling described pwm signal is 50%;
If described outdoor environment temperature is less than or equal to described 4th design temperature, the dutycycle controlling described pwm signal is 100%.
Compared with prior art, advantage of the present invention and good effect are: compressor of air conditioner preheating control method provided by the invention, first judges compressor state, if compressor state is without the need to preheat mode, then no matter temperature how, does not all need to perform warm-up control; Only in compressor state for needing preheat mode and temperature conditions performs warm-up control for needing during preheating condition again, thus can ensure normally to start compressor, the power consumption caused with regard to opening warm-up control in bootable situation without the need to preheating at compressor being avoided again, improving the energy-saving effect of air-conditioning.
After reading the specific embodiment of the present invention by reference to the accompanying drawings, the other features and advantages of the invention will become clearly.
Accompanying drawing explanation
Fig. 1 is the flow chart of a compressor of air conditioner preheating control method of the present invention embodiment.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below with reference to drawings and Examples, the present invention is described in further detail.
Refer to Fig. 1, this figure is depicted as the flow chart of a compressor of air conditioner preheating control method of the present invention embodiment.
As shown in Figure 1, the method that this embodiment realizes compressor of air conditioner warm-up control comprises the steps:
Step 11: compressor of air conditioner powers on operation.
Step 12: judge that whether compressor state is for needing preheat mode.If so, step 13 is performed; Otherwise, perform step 14.
What in air-conditioning master control borad memory, store the compressor preset needs preheat mode, when compressor of air conditioner powers on operation, detect the current state of compressor, and make comparisons with the preheat mode that needs preset, thus judge that whether the current state of compressor is for needing preheat mode, and then perform different process according to judged result.
Step 13: if step 12 judges that compressor state is as needing preheat mode, then judge that whether temperature conditions is for needing preheating condition.If so, step 15 is performed; Otherwise, go to step 14.
Store in air-conditioning master control borad memory preset need preheat temperature condition, after power-on of air conditioner, detect in real time the temperature needed.Judging that the current state of compressor is as when needing preheat mode, makes comparisons the temperature of detection and Xu's preheat temperature condition preset, judges that whether current temperature conditions is for needing preheating condition, and perform different process according to judged result.
Step 14: close compressor warm-up control.
This step performs according to the judged result of step 12 and step 13.Specifically, if step 12 judges that compressor state is as without the need to preheat mode, shows that compressor does not need preheating can normally start, then close compressor warm-up control yet, namely do not need to perform compressor preheating yet and control.Or although step 12 judges that compressor state is as needing preheat mode, step 13 judges that Current Temperatures condition is as without the need to preheating condition, and in the case, compressor does not need preheating can normally start yet, close compressor warm-up control yet.Then, normal startup compressor.
Step 15: start compressor preheating and control.
This step performs according to the judged result of step 13.Specifically, if step 12 judges that compressor state is as needing preheat mode, and step 13 judges that Current Temperatures condition is as needing preheating condition, then start compressor preheating and control, compressor can normally be started.
In the warm-up control process of this embodiment, not directly determine whether performing warm-up control to compressor according to temperature conditions, but first compressor state is judged.Because the freezing state of compressor state reflection compressor oil, be direct, the key factor that determine that can compressor normally start, thus, it is more direct, accurate to judge.If compressor state is without the need to preheat mode, shows that not preheating also can normally start, and the impact of temperature need not be considered again, and then effectively prevent the power consumption opened preheating in the case and cause.And when compressor state is for needing preheat mode, then determine it is close or open compressor in conjunction with temperature conditions, guarantee that compressor normally can start warm-up control when needs preheating could start.
For compressor need preheat mode, temperature conditions need preheating condition, can set according to compressor of air conditioner environment for use, compressor performance.But different settings is different to power consumption, compressor start performance impact.Preferably, setting is below adopted to realize.
Compressor state, for needing preheat mode, refers to the arbitrary condition in three conditions met below:
Compressor power on first service condition, compressor operating time be less than the first setting-up time after halt condition, compressor operating time shut down after being not less than the first setting-up time and be greater than the second setting-up time downtime.
Wherein, the first setting-up time and the second setting-up time be research staff on air-conditioning production line rule of thumb and test the setting value drawn in a large number, and to be prestored in the memory of air-conditioning main controller.Such as, the first setting-up time is 2min, and the second setting-up time is 2h.Due to compressor startup and stop all being controlled by air-conditioning main controller, thus whether main controller can be easy to obtain compressor and power on first operation, running time of compressor and downtime.So; if it is determined that compressor is the operation that powers on first; or judge that compressor is operating less than 2min just shutdown; or judge that compressor is shut down at more than the 2min that operated and has been greater than 2h downtime; as long as meet one of them condition; just judging that current compressor state is as needing preheat mode, preheating may be needed normally to start.
And if above-mentioned three conditions all do not meet, then judge that compressor state is as without the need to preheat mode.
Temperature conditions, for needing preheating condition, refers to that outdoor environment temperature is less than the first design temperature, and the defrosting temperature of air-conditioner outdoor unit is greater than the temperature venting one's pent-up feelings of compressor.
And temperature conditions is without the need to preheating condition, refer to that outdoor environment temperature is not less than the first design temperature, or, outdoor environment temperature be less than the first design temperature but the temperature venting one's pent-up feelings of compressor be greater than air-conditioner outdoor unit defrosting temperature and feel elated and exultant temperature with defrosting temperature difference be greater than the second design temperature.
Outdoor environment temperature can be detected by the temperature sensor be arranged on air-conditioner outdoor unit, defrosting temperature can be detected by the temperature sensor on machine condenser disposed in the outdoor, the temperature venting one's pent-up feelings of compressor can detect by being arranged on the feel elated and exultant temperature sensor of mouth of compressor, and air-conditioning main controller easily can must get corresponding temperature value by the detected value reading each temperature sensor.First design temperature and the second design temperature are the setting values that research staff rule of thumb and in a large number tests on air-conditioning production line and air-conditioning makes the environmental condition of land used draw, and are prestored in the memory of air-conditioning main controller.Such as, the first design temperature is 8 DEG C, and the second design temperature is 3 DEG C.So, if it is determined that outdoor environment temperature is less than 8 DEG C, and the defrosting temperature of off-premises station is greater than the temperature venting one's pent-up feelings of compressor, shows that now compressor oil may be freezing and cause normally starting, needs to perform preheating.And if outdoor environment temperature is not less than 8 DEG C; Or although outdoor environment temperature is less than 8 DEG C, the temperature venting one's pent-up feelings of compressor is greater than the defrosting temperature of air-conditioner outdoor unit, and temperature of feeling elated and exultant is greater than 3 DEG C with the difference of defrosting temperature, in these situations, even if compressor not preheating also can normally start, then without the need to performing warm-up control.
As preferred embodiment, when compressor is for needing preheat mode, if temperature conditions meet outdoor environment temperature is less than the first design temperature, the temperature venting one's pent-up feelings of compressor is greater than air-conditioner outdoor unit defrosting temperature and temperature of feeling elated and exultant is not more than the second design temperature with the difference of defrosting temperature time, will keep compressor preheating control constant.
And it is constant to keep compressor preheating to control, specifically, if start in compressor preheating control procedure, temperature conditions meets outdoor environment temperature is less than the first design temperature, the temperature venting one's pent-up feelings of compressor is greater than air-conditioner outdoor unit defrosting temperature and temperature of feeling elated and exultant is not more than the second design temperature with the difference of defrosting temperature, then continue to perform compressor preheating to control, until temperature conditions is without the need to preheating condition; If in close compressor warm-up control process, temperature conditions meets outdoor environment temperature is less than the first design temperature, the temperature venting one's pent-up feelings of compressor is greater than air-conditioner outdoor unit defrosting temperature and temperature of feeling elated and exultant is not more than the second design temperature with the difference of defrosting temperature, then continue close compressor warm-up control, until temperature conditions is for needing preheating condition.
For example, the operation if compressor powers on first, outdoor environment temperature is 5 DEG C, and defrosting temperature is greater than compressor and feels elated and exultant temperature, and both temperature difference are 2 DEG C, then start compressor preheating and control; Along with compressor is felt elated and exultant the rising of temperature, when compressor feel elated and exultant temperature higher than defrosting temperature 1 DEG C time, then keep situation above, continue to perform warm-up control, until compressor is felt elated and exultant, temperature is higher than defrosting temperature 3 DEG C, and satisfied temperature condition is without the need to preheating condition, close compressor warm-up control.And if compressor powers on operation first, outdoor environment temperature is 5 DEG C, and compressor is felt elated and exultant, temperature is higher than defrosting temperature 1 DEG C, then keep the state that compressor preheating is closed, to feel elated and exultant temperature until defrosting temperature is greater than compressor, meet the temperature conditions needing preheating, start compressor preheating and control.
When startup or close compressor warm-up control, preferably adopt the mode controlling the work of compressor stator coil electricity to start compressor preheating and control, and employing controls the mode close compressor warm-up control of compressor stator coil blackout.Thus, by heating in compressor body, the efficiency of heating surface is high; And the method is without the need to setting up extra heater, simplifies structure, saving air-conditioning cost.
As preferred embodiment, when warm-up control, utilize pwm signal to control the work of compressor stator coil electricity, and according to the difference of outdoor environment temperature, control the dutycycle of pwm signal.Specifically, if outdoor environment temperature is less than the first design temperature and be greater than the 3rd design temperature, the dutycycle controlling pwm signal is less than 50%; If outdoor environment temperature is less than or equal to the 3rd design temperature and be greater than the 4th design temperature, the dutycycle controlling pwm signal is 50%; If outdoor environment temperature is less than or equal to the 4th design temperature, the dutycycle controlling pwm signal is 100%.
Wherein, the 3rd design temperature and the 4th design temperature are also preset and the temperature value stored, and acquisition methods is with reference to the first design temperature and the second design temperature.For example, the 3rd design temperature is 4 DEG C, and the 4th design temperature is 0 DEG C.If it is determined that current outdoor environment temperature is less than 8 DEG C but be greater than 4 DEG C, performs compressor preheating and control, and be 33% by the Duty ratio control of the pwm signal controlling compressor stator coil electricity; If current outdoor environment temperature is less than 4 DEG C but be greater than 0 DEG C, performs compressor preheating and control, and be 50% by the Duty ratio control of the pwm signal controlling compressor stator coil electricity; And if current outdoor environment temperature is less than 0 DEG C, performs compressor preheating and control, and be 100% by the Duty ratio control of the pwm signal controlling compressor stator coil electricity.By the dutycycle of the difference adjustment pwm signal according to outdoor environment temperature, guaranteeing to reduce power consumption further while compressor normally starts, reach energy-saving effect.
Above embodiment only in order to technical scheme of the present invention to be described, but not is limited; Although with reference to previous embodiment to invention has been detailed description, for the person of ordinary skill of the art, still can modify to the technical scheme described in previous embodiment, or equivalent replacement is carried out to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of the present invention's technical scheme required for protection.
Claims (8)
1. a compressor of air conditioner preheating control method, is characterized in that, described method comprises:
Judge compressor state;
When described compressor state is for needing preheat mode, then judge temperature conditions;
When described temperature conditions is for needing preheating condition, starts compressor preheating and controlling;
Be without the need to preheat mode in described compressor state, or described compressor state for need preheat mode but described temperature conditions for during without the need to preheating condition, close compressor warm-up control.
2. method according to claim 1, is characterized in that, described compressor state, for needing preheat mode, is specially:
Meet compressor power on first service condition, compressor operating time be less than the first setting-up time after halt condition, compressor operating time shut down and the arbitrary condition be greater than downtime in the second setting-up time condition after being not less than described first setting-up time;
Described compressor state is without the need to preheat mode, is specially:
Compressor power on first service condition, compressor operating time be less than the first setting-up time after halt condition, compressor operating time is shut down after being not less than described first setting-up time and the second setting-up time condition that is greater than downtime does not all meet.
3. method according to claim 1, is characterized in that, described temperature conditions, for needing preheating condition, is specially:
Outdoor environment temperature is less than the first design temperature, and the defrosting temperature of air-conditioner outdoor unit is greater than the temperature venting one's pent-up feelings of compressor;
Described temperature conditions is without the need to preheating condition, is specially:
Outdoor environment temperature is not less than described first design temperature, or, outdoor environment temperature be less than described first design temperature but the temperature venting one's pent-up feelings of compressor be greater than air-conditioner outdoor unit defrosting temperature and feel elated and exultant temperature with defrosting temperature difference be greater than the second design temperature.
4. method according to claim 3, it is characterized in that, when described compressor state is for needing preheat mode, if described temperature conditions meet outdoor environment temperature is less than described first design temperature, the temperature venting one's pent-up feelings of compressor is greater than air-conditioner outdoor unit defrosting temperature and temperature of feeling elated and exultant is not more than described second design temperature with the difference of defrosting temperature time, keep compressor preheating to control constant.
5. method according to claim 4, is characterized in that, described maintenance compressor preheating controls constant, is specially:
If start in compressor preheating control procedure, described temperature conditions meets outdoor environment temperature is less than described first design temperature, the temperature venting one's pent-up feelings of compressor is greater than air-conditioner outdoor unit defrosting temperature and temperature of feeling elated and exultant is not more than described second design temperature with the difference of defrosting temperature, continue to perform compressor preheating to control, until described temperature conditions is without the need to preheating condition;
If in close compressor warm-up control process, described temperature conditions meets outdoor environment temperature is less than described first design temperature, the temperature venting one's pent-up feelings of compressor is greater than air-conditioner outdoor unit defrosting temperature and temperature of feeling elated and exultant is not more than described second design temperature with the difference of defrosting temperature, continue close compressor warm-up control, until described temperature conditions is for needing preheating condition.
6. method according to claim 3, is characterized in that, described startup compressor preheating controls, and is specially: control the work of compressor stator coil electricity; Described close compressor warm-up control, is specially: control compressor stator coil blackout.
7. method according to claim 6, it is characterized in that, described control compressor stator coil electricity work, is specially: utilize pwm signal to control the work of compressor stator coil electricity, and according to the difference of described outdoor environment temperature, control the dutycycle of described pwm signal.
8. method according to claim 7, is characterized in that, the described difference according to described outdoor environment temperature, controls the dutycycle of described pwm signal, be specially:
If described outdoor environment temperature is less than described first design temperature and be greater than the 3rd design temperature, the dutycycle controlling described pwm signal is less than 50%;
If described outdoor environment temperature is less than or equal to described 3rd design temperature and is greater than the 4th design temperature, the dutycycle controlling described pwm signal is 50%;
If described outdoor environment temperature is less than or equal to described 4th design temperature, the dutycycle controlling described pwm signal is 100%.
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| CN106766446A (en) * | 2016-11-29 | 2017-05-31 | 重庆美的通用制冷设备有限公司 | Air-conditioner and lubricating oil temperature determination methods, the control device for compressor |
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| CN110701056A (en) * | 2019-10-28 | 2020-01-17 | 宁波奥克斯电气股份有限公司 | Preheating control method and device for compressor, compressor and air conditioner |
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| CN106196790B (en) * | 2016-07-15 | 2019-05-07 | 珠海格力电器股份有限公司 | A kind of compressor assembly, compressor preheating device control device and method |
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| CN108278712B (en) * | 2017-01-04 | 2020-10-09 | 奥克斯空调股份有限公司 | Power supply control method for preheating of variable frequency compressor |
| CN108278712A (en) * | 2017-01-04 | 2018-07-13 | 奥克斯空调股份有限公司 | A kind of power control method of variable frequency compressor preheating |
| CN107120792A (en) * | 2017-05-05 | 2017-09-01 | 广东美的暖通设备有限公司 | Air-conditioning system starts control method, device and air-conditioning |
| CN109682020A (en) * | 2018-12-28 | 2019-04-26 | Tcl空调器(中山)有限公司 | A kind of compressor preheating control method, system, storage medium and air-conditioner outdoor unit |
| CN110701056A (en) * | 2019-10-28 | 2020-01-17 | 宁波奥克斯电气股份有限公司 | Preheating control method and device for compressor, compressor and air conditioner |
| CN110701056B (en) * | 2019-10-28 | 2021-05-14 | 宁波奥克斯电气股份有限公司 | Preheating control method and device for compressor, compressor and air conditioner |
| CN111140462A (en) * | 2020-01-09 | 2020-05-12 | 珠海格力电器股份有限公司 | Compressor preheating structure, control method and air conditioner |
| CN111140462B (en) * | 2020-01-09 | 2021-05-25 | 珠海格力电器股份有限公司 | Compressor preheating structure, control method and air conditioner |
| CN112728725A (en) * | 2021-01-22 | 2021-04-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Control device and method of compressor and air conditioner |
| CN112728725B (en) * | 2021-01-22 | 2022-02-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Control device and method of compressor and air conditioner |
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