WO2022237172A1 - 用于冰箱的压缩机控制方法与冰箱 - Google Patents

用于冰箱的压缩机控制方法与冰箱 Download PDF

Info

Publication number
WO2022237172A1
WO2022237172A1 PCT/CN2021/139645 CN2021139645W WO2022237172A1 WO 2022237172 A1 WO2022237172 A1 WO 2022237172A1 CN 2021139645 W CN2021139645 W CN 2021139645W WO 2022237172 A1 WO2022237172 A1 WO 2022237172A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
speed
actual
power
rotational speed
Prior art date
Application number
PCT/CN2021/139645
Other languages
English (en)
French (fr)
Inventor
苏翔飞
李涛
侯建国
Original Assignee
青岛海尔电冰箱有限公司
海尔智家股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛海尔电冰箱有限公司, 海尔智家股份有限公司 filed Critical 青岛海尔电冰箱有限公司
Publication of WO2022237172A1 publication Critical patent/WO2022237172A1/zh

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022Compressor control arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06Control using electricity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00Arrangement or mounting of control or safety devices
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the invention relates to refrigerator control, in particular to a compressor control method and the refrigerator for the refrigerator.
  • Inverter refrigerators refer to refrigerators that use inverter compressors.
  • the speed of the inverter compressor is not fixed and can be adjusted according to the cooling state. Under the condition of high storage temperature, the speed of the compressor is increased to achieve the purpose of cooling down as soon as possible; under the condition of low temperature of the storage, the speed of the compressor is reduced to keep the temperature stable.
  • the inverter refrigerator has low power consumption and good mute effect, which avoids the frequent start and stop of the compressor.
  • the safety protection mechanism of the compressor is to ensure the safe operation of the refrigerator.
  • the compressor is controlled to stop, so as to protect the compressor.
  • overheating protection measures may cause the compressor to start frequently, and even increase the wear and tear of the compressor in serious cases, reduce the service life of the compressor, and cause the reliability of the refrigerator to decline.
  • An object of the present invention is to provide a compressor control method for a refrigerator and a refrigerator that avoid frequent startup and shutdown of the compressor.
  • a further object of the present invention is to increase the energy efficiency of the refrigerator.
  • Another further object of the present invention is to make the frequency adjustment of the compressor smoother.
  • the present invention provides a compressor control method for a refrigerator, the control method comprising:
  • the rotating speed of the compressor is reduced with the set value of the rotating speed being the target value, and the speed reducing rate is configured as the first speed regulation rate.
  • the actual power when the actual power is greater than the maximum value of the preset limited FM power range, it also includes:
  • the power protection threshold is greater than the maximum value of the frequency modulation power range
  • the compressor is controlled to stop.
  • the compressor is controlled to stop.
  • the method further includes:
  • the restart After the number of restarts exceeds the threshold of the set number of times, the restart will be stopped and an alarm signal will be output; and when the actual power of the compressor in the continuous running state is less than the minimum value of the frequency regulation power range, the number of restarts will be cleared.
  • the method further includes: adjusting the rotation speed of the compressor with the rotation speed set value as the target value.
  • the step of adjusting the rotational speed of the compressor with the rotational speed setting value as a target value includes:
  • the actual speed is less than the set value of the speed, the actual speed is increased at the third speed regulation rate;
  • the actual speed is greater than the set value of the speed, the actual speed is reduced at a fourth speed regulation rate, wherein the third speed regulation rate is greater than the fourth speed regulation rate.
  • the step of obtaining the actual power of the compressor includes:
  • the step of determining the rotational speed setting value of the compressor includes:
  • the operating parameters include the set freezing temperature of the refrigerator and the operating environment temperature of the refrigerator, and the corresponding table is pre-configured with the set freezing temperature, operating environment temperature and rotating speed. Correspondence of setting values.
  • a refrigerator which includes:
  • a controller includes a memory and a processor, wherein the memory stores a machine-executable program, and when the machine-executable program is executed by the processor, any one of the above compressor control methods for a refrigerator is realized.
  • the actual rotational speed of the compressor is compared with the rotational speed set value; when the actual rotational speed is less than In the case of the speed setting value, the actual speed is maintained; when the actual speed is greater than or equal to the speed setting value, the speed of the compressor is reduced with the speed setting value as the target value, and the speed reduction rate is configured as the first speed regulation rate.
  • the limited frequency modulation power range can be set according to the normal operating power of the compressor, that is, the limited frequency modulation power range is a value range higher than the normal operating power of the compressor. Within the limited frequency modulation power range, the compressor speed is only allowed to be adjusted downwards, and the upward adjustment is prohibited, so as to avoid further increase of the compressor power.
  • the compressor control method and refrigerator used in refrigerators of the present invention further judge whether the actual power is greater than the preset power protection threshold when the actual power is greater than the maximum value of the preset limited frequency modulation power range.
  • the speed of the compressor is quickly reduced to avoid direct shutdown of the compressor.
  • the compressor control method for a refrigerator of the present invention and the refrigerator control the compressor to shut down according to the actual frequency of the compressor in an extreme state, so as to avoid serious failure of the compressor in an abnormal state.
  • the compressor control method and refrigerator used in the refrigerator of the present invention optimize the restart strategy after the compressor stops abnormally, and can restore the compressor to normal operation to a certain extent.
  • Fig. 1 is a schematic block diagram of a refrigerator according to one embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a compressor control method for a refrigerator according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a circuit for collecting voltage signals in a compressor control method for a refrigerator according to an embodiment of the present invention.
  • Fig. 4 is a schematic diagram of a circuit for collecting current signals in a compressor control method for a refrigerator according to an embodiment of the present invention.
  • the refrigerator in this embodiment can be a storage device with a refrigeration system to keep food or other storage items at a constant low temperature.
  • the refrigerating system can be a common compression refrigerating system, which provides cold energy to the storage compartment through, for example, direct cooling and/or air cooling, so that the storage compartment has a desired preservation temperature.
  • the refrigeration system can be a refrigeration cycle system composed of a compressor, a condenser, a throttling device, and an evaporator.
  • the evaporator is configured to directly or indirectly provide cooling to the storage compartment. Since the overall structure of the refrigerator and the refrigeration system itself are well-known and easy to implement by those skilled in the art, in order not to cover up and obscure the invention point of the present application.
  • FIG. 1 is a schematic block diagram of a refrigerator 10 according to one embodiment of the present invention.
  • the refrigerator 10 of this embodiment may generally include a compressor 130 and a controller 100 .
  • the compressor 130 as the power of the refrigeration cycle, is driven and rotated by the motor, extracts the vapor in the evaporator, and increases the pressure and temperature of the refrigerant vapor through compression, creating conditions for transferring the heat of the refrigerant vapor to the external environment medium, and also That is, the low-temperature and low-pressure refrigerant vapor is compressed to a high-temperature and high-pressure state.
  • the rotation speed of the compressor 130 can be adjusted through frequency conversion technology, and the frequency conversion board can adjust the rotation speed of the compressor 130 by changing the power supply frequency of the compressor 130 . That is, the power supply frequency is directly proportional to the rotation speed of the compressor 130 (the ratio is determined by the number of poles of the motor).
  • n 30*f.
  • f the power supply frequency, which is controlled and adjusted by the frequency conversion board, and 60Hz corresponds to 1800 revolutions per second.
  • the adjustment of the rotational speed of the compressor 130 can adjust the discharge capacity (refrigerant flow rate) accordingly, thereby further adjusting the cooling capacity.
  • the controller 100 includes a memory 120 and a processor 110, wherein the memory 120 stores a machine-executable program, and when the machine-executable program is executed by the processor 110, any compressor control method for a refrigerator in this embodiment is implemented.
  • the machine-executable program for performing the method of this embodiment may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or in one or more Source or object code written in any combination of programming languages.
  • the memory 120 may be a tangible device capable of holding and storing instructions used by the processor 110, and may be implemented by various computer-readable storage media.
  • the processor 110 adopts an execution device with a certain data processing capability, such as a single-chip microcomputer, an embedded processor, a microprocessor, and the like.
  • FIG. 2 is a schematic diagram of a compressor control method for a refrigerator according to an embodiment of the present invention.
  • the compressor control method for a refrigerator in this embodiment may generally include:
  • Step S202 obtaining the actual power and actual speed of the compressor, and determining the set value of the compressor's speed
  • Step S204 judging whether the actual power belongs to the preset limited FM power range
  • Step S206 when the actual power belongs to the preset limited frequency regulation power range (that is, when the actual power is greater than or equal to the minimum value of the limited frequency regulation power range and less than or equal to the maximum value of the limited frequency regulation power range), the actual speed of the compressor and the speed setting value for comparison;
  • Step S208 in the case that the actual speed is lower than the set value of the speed, maintain the actual speed
  • Step S210 in the case that the actual rotational speed is greater than or equal to the rotational speed setting value, reduce the rotational speed of the compressor with the rotational speed setting value as the target value, and configure the deceleration rate as the first speed regulation rate.
  • the actual speed of the compressor is compared with the speed setting value; when the actual speed is less than the speed setting value, Maintain the actual speed; when the actual speed is greater than or equal to the set value of the speed, reduce the speed of the compressor with the set value of the speed as the target value, and configure the speed reduction rate as the first speed regulation rate.
  • the limited frequency modulation power range can be set according to the normal operating power of the compressor, that is, the limited frequency modulation power range is a value range higher than the normal operating power of the compressor.
  • the compressor is only allowed to adjust downwards, but prohibits upward adjustments, so as to avoid further increase of the compressor power.
  • the value range around 200W can be used as the limited frequency modulation power range, which can be specifically set to 197W to 204W.
  • the compressor can be considered as possibly over-powered.
  • the rotational speed of the compressor is only allowed to be adjusted downwards, and is forbidden to be adjusted upwards, so as to avoid further increase of the compressor power, so that the compressor can run stably.
  • the deceleration rate can be configured as the preset first speed regulation rate, for example, decrement by 5 revolutions every 200 ms, so as to ensure smooth adjustment of the compressor as much as possible. Under normal circumstances, the power of the compressor can be restored to the normal power range below the frequency regulation power range through a smooth frequency reduction.
  • Acquiring the actual power of the compressor in step S202 may be obtained by collecting the power supply signal of the compressor, which may include collecting the power supply signal of the compressor, and calculating the actual power of the compressor according to the power supply signal.
  • the above electrical signals include voltage signals and current signals.
  • Fig. 3 is a schematic diagram of a circuit for collecting voltage signals in a compressor control method for a refrigerator according to an embodiment of the present invention
  • Fig. 4 is a circuit diagram for collecting current signals in a compressor control method for a refrigerator according to an embodiment of the present invention The schematic diagram of the collected circuit.
  • the actual power of the compressor can be calculated from the power supply voltage and power supply current of the compressor.
  • both the voltage signal and the current signal can preferably adopt high-precision A/D sampling (for example, adopt 12-bit A/D conversion).
  • OVP is used to connect one A/D converter to provide a voltage signal to the A/D converter.
  • I_line is used to connect another A/D converter to provide current signal to the A/D converter.
  • A/D conversion can use the built-in A/D conversion function of the processor.
  • the compressor is powered by a commercial frequency power supply, that is, it can generally be powered by a 220V AC power supply.
  • the voltage VDC is about 310V.
  • the voltage division signal output from OVP is about 2.5V.
  • R5 and C1 are used for voltage regulation and current limiting respectively.
  • I_shunt is connected to the common ends of the three lower bridge arms of the IGBT driving the compressor in the frequency converter VVVF to obtain the supply current signal.
  • the current signal acquisition circuit is amplified by a discharge circuit composed of RS, R6, R7, R8, R9, R10, R11, C2 and operational amplifier OP.
  • a discharge circuit composed of RS, R6, R7, R8, R9, R10, R11, C2 and operational amplifier OP.
  • an amplifying circuit with a magnification of 5 times can be configured.
  • the current signal After being amplified by the amplifier, the current signal can be converted into a corresponding voltage for sampling by the A/D.
  • the current signal acquisition circuit can be configured to correspond to 2.5V voltage output when the current is 0, and correspond to 5V voltage output when the current is 5A. If the current exceeds 5A, it is considered to need overcurrent protection.
  • the voltage and current after sampling processing can be calculated by the processor to obtain the actual power.
  • the actual speed of the compressor can be determined according to the output frequency of the inverter, and the frequency is proportional to the speed of the compressor (the ratio is determined by the number of poles of the motor).
  • the rotational speed setting value of the compressor is generally set according to the cooling state of the refrigerator. As the rotational speed of the compressor changes, the cooling capacity changes accordingly. Therefore, the cooling capacity can be provided by increasing the rotational speed of the compressor when the compressor is operating normally.
  • the step of determining the rotational speed setting value of the compressor may include: collecting operating parameters of the refrigerator; querying a pre-configured correspondence table to obtain the rotational speed setting value corresponding to the operating parameters, and the operating parameters may include refrigerator setting The freezing temperature and the operating environment temperature of the refrigerator are set, and the correspondence table is pre-configured with the corresponding relationship between the setting freezing temperature, the operating environment temperature and the set value of the rotating speed.
  • Table 1 is a specific example of the corresponding table in the compressor control method for a refrigerator in this embodiment.
  • the set speed shown in Table 1 is the way to adjust the compressor power within the normal operating range.
  • the power range of less than 197W can be regarded as the normal operating range.
  • this operating range when there is a deviation between the actual speed of the compressor and the set speed, it can be adjusted accordingly.
  • the rotation speed of the compressor can also be adjusted at the target value of the rotation speed setting value. Specifically, if the actual speed is less than the set value of the speed, the actual speed is increased at the third speed regulation rate; if the actual speed is greater than the speed setting value, the actual speed is reduced at the fourth speed regulation rate, wherein the third speed regulation rate is greater than the fourth Speed regulation rate, that is, the speed-up rate can be greater than the speed-down rate.
  • the third speed regulation rate can be increased by 5 revolutions every 200 milliseconds
  • the fourth speed regulation rate can be decreased by 2 revolutions every 200 milliseconds.
  • Such an adjustment method can make the compressor run more smoothly and avoid excessive loss caused by excessive speed adjustment.
  • the third speed regulation rate is greater than the fourth speed regulation speed, which can be more in line with the operating characteristics of the compressor, and is beneficial to reduce the energy consumption of the compressor.
  • the actual power is greater than the maximum value of the preset limited frequency modulation power range, it can further determine whether the actual power is greater than the preset power protection threshold, and if the actual power is greater than the power protection threshold, directly reduce the speed of the compressor.
  • the power protection threshold is greater than the maximum value of the limited frequency modulation power range, which can be configured in advance according to the test. For example, for a compressor whose general operating power does not exceed 200W, when the limited frequency modulation power range is set to 197W to 204W, the power protection threshold can be Set to 210W. That is, once the actual power of the compressor exceeds 210W, the power of the compressor is directly reduced by reducing the speed.
  • the speed reduction rate is configured as the second speed regulation rate, and the second speed regulation rate is greater than the first speed regulation rate, and the state of the compressor is stabilized through rapid frequency reduction. For example, you can reduce 8 revolutions every 200 milliseconds, and try to reduce the power of the compressor without stopping the machine.
  • the first low speed threshold may be pre-configured based on compressor operating conditions. For example, for the compressor shown in Table 1, it can be set to 1800 revolutions. If the actual rotational speed of the compressor is lower than the first low-speed threshold but the actual power is still greater than the power protection threshold, it can be considered that the compressor is abnormal, and it can be stopped directly at this time.
  • the compressor may also be controlled to stop.
  • the second low-speed threshold can also be pre-configured according to the operating conditions of the compressor, and it can be set to be the same as or different from the first low-speed threshold. For example, for the compressor shown in Table 1, it can also be set to 1800 revolutions. In this case, it can be considered that no further speed reduction is required, so that the compressor can be stopped directly.
  • the aforementioned forced shutdown only occurs when it is determined that the compressor is in an abnormal state. That is to say, the compressor will be forced to stop only in extreme conditions, and its protection shutdown rate is much lower than the existing compressor protection measures, thereby reducing the loss of the compressor and improving the reliability of the compressor.
  • the compressor After controlling the compressor to stop, it is also possible to restart the compressor after a set time, and count the number of restarts of the compressor; when the number of restarts exceeds the threshold of the set number of times, stop restarting the compressor and output an alarm signal; and when compression occurs
  • the number of restarts will be cleared.
  • the compressor can be restarted after a set time (can be set to 10s to 50s, such as 30s), and the fault can be eliminated by automatic restart.
  • the number threshold can be set to 2 to 10 times, for example, 5 times
  • the number threshold can be set to 2 to 10 times, for example, 5 times
  • control logic of the above compressor control method is introduced below.
  • the limit frequency regulation power range is set to 197W to 204W
  • the power protection threshold is set to 210W
  • speed setting value is shown in Table 1
  • the control logic can be:
  • the compressor starts to decelerate, and the deceleration speed is 8 revolutions every 200 milliseconds. If the speed setting value set at this time is lower than 1800 rpm, it can be considered that the compressor does not need to continue to reduce the speed, and the compressor can be directly controlled to stop.
  • the task compressor can also be controlled without continuing to reduce the speed, and the compressor can be directly controlled to stop.
  • the set speed of the compressor is lower than the actual speed, it will decrease by 5 revolutions every 200 milliseconds until it reaches the set speed of the compressor. If the set speed is much higher than the actual speed, the actual speed will be maintained and the speed will not be increased.
  • the speed of the compressor is limited to avoid further increase of the power of the compressor and maintain the stable operation of the compressor. Avoid the direct shutdown of the compressor, greatly reducing the number of abnormal startup and shutdown of the compressor. By optimizing the restart strategy after the compressor stops abnormally, the compressor can be restored to normal operation to a certain extent. At the same time, when the compressor cannot automatically return to normal, stop and restart the compressor to avoid deterioration of the fault and facilitate timely maintenance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

一种用于冰箱(10)的压缩机(130)控制方法与冰箱(10),所述控制方法包括:获取压缩机(130)的实际功率和实际转速,并确定压缩机(130)的转速设定值;判断实际功率是否属于预设的限制调频功率范围;若是,将压缩机(130)的实际转速与转速设定值进行比较;在实际转速小于转速设定值的情况下,维持实际转速;在实际转速大于或等于转速设定值的情况下,以转速设定值为目标值降低压缩机(130)的转速,并且降速速率配置为第一调速速率。通过上述控制方法,避免了压缩机(130)频繁启停,提高了冰箱(10)的能耗效率,使得压缩机(130)调频更加平顺,大大提高了冰箱(10)的可靠性和稳定性。

Description

用于冰箱的压缩机控制方法与冰箱 技术领域
本发明涉及冰箱控制,特别是涉及用于冰箱的压缩机控制方法与冰箱。
背景技术
变频冰箱是指使用变频压缩机的冰箱。变频压缩机的转速并不固定,可以根据制冷状态进行调整。在储物温度较高的工况下,压缩机转速提高,达到尽快降温的目的;在储物温度较低的工况下,压缩机转速降低,可以保持温度稳定。变频冰箱的耗电量低、静音效果好,避免了压缩机的频繁启停。
压缩机的安全保护机制是保证冰箱安全运行的方面,当电机温度或压缩机自身温度超过一设定温度后,控制压缩机停机,从而达到保护压缩机的作用。但是这种过热保护措施,存在导致压缩机频繁启动的现象,严重时甚至会增加压缩机的磨损,减小压缩机的使用寿命,导致冰箱可靠性下降。
发明内容
本发明的一个目的是要提供一种避免压缩机频繁启停的用于冰箱的压缩机控制方法与冰箱。
本发明一个进一步的目的是要提高冰箱的能耗效率。
本发明另一个进一步的目的是要使得压缩机调频更加平顺。
特别地,本发明提供了一种用于冰箱的压缩机控制方法,该控制方法包括:
获取压缩机的实际功率和实际转速,并确定压缩机的转速设定值;
判断实际功率是否属于预设的限制调频功率范围;
若是,将压缩机的实际转速与转速设定值进行比较;
在实际转速小于转速设定值的情况下,维持实际转速;
在实际转速大于或等于转速设定值的情况下,以转速设定值为目标值降低压缩机的转速,并且降速速率配置为第一调速速率。
可选地,在实际功率大于预设的限制调频功率范围的最大值的情况下,还包括:
判断实际功率是否大于预设的功率保护阈值,功率保护阈值大于限制调频功率范围的最大值;
若是,降低压缩机的转速,并且降速速率配置为第二调速速率,并且第二调速速率大于第一调速速率。
可选地,在实际功率大于功率保护阈值的情况下,如果出现转速设定值小于预设的第一低速阈值,则控制压缩机停机。
可选地,在实际功率大于限制调频功率范围的最大值的情况下,如果出现压缩机的实际转速小于预设的第二低速阈值,则控制压缩机停机。
可选地,在控制压缩机停机的步骤之后还包括:
经过设定时间后重启压缩机,并对压缩机的重启次数进行计数;
在重启次数超出设定次数阈值后,停止重启并输出报警信号;并且在出现压缩机持续运行状态下的实际功率小于限制调频功率范围的最小值的情况后,重启次数被清零。
可选地,在判断实际功率小于预设的限制调频功率范围的最低值的情况下,还包括:以转速设定值为目标值调整压缩机的转速。
可选地,以转速设定值为目标值调整压缩机的转速的步骤包括:
若实际转速小于转速设定值,以第三调速速率提高实际转速;
若实际转速大于转速设定值,以第四调速速率降低实际转速,其中第三调速速率大于第四调速速率。
可选地,获取压缩机的实际功率的步骤包括:
采集压缩机的供电信号,并根据供电信号计算压缩机的实际功率。
可选地,确定压缩机的转速设定值的步骤包括:
采集冰箱的运行参数;
在预先配置的对应表查询得出运行参数对应的转速设定值,运行参数包括冰箱的设定冷冻温度以及冰箱的运行环境温度,并且对应表预先配置有设定冷冻温度、运行环境温度与转速设定值的对应关系。
根据本发明的另一个方面,还提供了一种冰箱,其包括:
压缩机;以及
控制器,控制器包括存储器和处理器,其中存储器存储有机器可执行程序,机器可执行程序被处理器执行时实现上述任一种的用于冰箱的压缩机控制方法。
本发明的用于冰箱的压缩机控制方法与冰箱,在压缩机的实际功率位于预设的限制调频功率范围的情况下,将压缩机的实际转速与转速设定值进行 比较;在实际转速小于转速设定值的情况下,维持实际转速;在实际转速大于或等于转速设定值的情况下,以转速设定值为目标值降低压缩机的转速,并且降速速率配置为第一调速速率。限制调频功率范围可以根据压缩机的正常运行功率进行设置,也即限制调频功率范围为高于压缩机的正常运行功率的数值范围。在该限制调频功率范围内,压缩机转速仅允许下调,而禁止上调,从而避免压缩机功率进一步升高。
进一步地,本发明的用于冰箱的压缩机控制方法与冰箱,在实际功率大于预设的限制调频功率范围的最大值的情况下,进一步判断实际功率是否大于预设的功率保护阈值,在实际功率大于预设的功率保护阈值时,快速降低压缩机的转速,避免压缩机直接停机。
更进一步地,本发明的用于冰箱的压缩机控制方法与冰箱,在极端状态下,根据压缩机的实际频率控制压缩机进行停机,避免异常状态下压缩机出现严重故障。
更进一步地,本发明的用于冰箱的压缩机控制方法与冰箱,对压缩机异常停机后的重启策略进行优化,在一定程度上可以使压缩机恢复正常运行。
根据下文结合附图对本发明具体实施例的详细描述,本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。
附图说明
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解,这些附图未必是按比例绘制的。附图中:
图1是根据本发明一个实施例的冰箱的示意框图;
图2是根据本发明一个实施例的用于冰箱的压缩机控制方法的示意图;
图3是根据本发明一个实施例的用于冰箱的压缩机控制方法中进行电压信号采集的电路示意图;以及
图4是根据本发明一个实施例的用于冰箱的压缩机控制方法中进行电流信号采集的电路示意图。
具体实施方式
本实施例的冰箱可以为具有制冷系统的储物设备,使食物或其他存储物保持恒定低温状态。制冷系统可为常见的压缩制冷系统,其通过例如直冷和 /或风冷形式向储物间室提供冷量,以使储物间室具有期望的保藏温度。
制冷系统可为由压缩机、冷凝器、节流装置和蒸发器等构成的制冷循环系统。蒸发器配置成直接或间接地向储物间室内提供冷量。由于冰箱的整体结构、制冷系统本身是本领域技术人员习知且易于实现的,为了不掩盖和模糊本申请的发明点。
图1是根据本发明一个实施例的冰箱10的示意框图。本实施例的冰箱10一般性地可以包括压缩机130以及控制器100。
压缩机130作为制冷循环的动力,由电机拖动旋转,抽出蒸发器内蒸气,并通过压缩作用提高制冷剂蒸气的压力和温度,创造将制冷剂蒸气的热量向外界环境介质转移的条件,也即将低温低压制冷剂蒸气压缩至高温高压状态。压缩机130的转速可以通过变频技术进行调整,变频板可以通过改变压缩机130的供电频率调整压缩机130的转速。也即供电频率与压缩机130的转速成正比(比例由电机的电极数确定)。例如对于一种实际使用的变频压缩机,其转速n=30*f。其中,f为供电频率,并由变频板受控调整,60Hz对应1800转每秒。压缩机130的转速调整可以相应调整排气量(制冷剂流速),从而进一步调整制冷量。
控制器100包括存储器120和处理器110,其中存储器120存储有机器可执行程序,机器可执行程序被处理器110执行时实现本实施例的任一种用于冰箱的压缩机控制方法。用于执行本实施例的方法的机器可执行程序可以是汇编指令、指令集架构(ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。存储器120可以是可以保持和存储由处理器110使用的指令的有形设备,可由各种计算机可读存储介质实现。处理器110采用具有一定数据处理能力的执行装置,例如单片机、嵌入式处理器、微处理器等。
图2是根据本发明一个实施例的用于冰箱的压缩机控制方法的示意图。本实施例的用于冰箱的压缩机控制方法一般性地可以包括:
步骤S202,获取压缩机的实际功率和实际转速,并确定压缩机的转速设定值;
步骤S204,判断实际功率是否属于预设的限制调频功率范围;
步骤S206,在实际功率属于预设的限制调频功率范围(也即实际功率大于等于限制调频功率范围的最小值并且小于等于限制调频功率范围的最 大值时),将压缩机的实际转速与转速设定值进行比较;
步骤S208,在实际转速小于转速设定值的情况下,维持实际转速;
步骤S210,在实际转速大于或等于转速设定值的情况下,以转速设定值为目标值降低压缩机的转速,并且降速速率配置为第一调速速率。
本实施例的方法,在压缩机的实际功率位于预设的限制调频功率范围的情况下,将压缩机的实际转速与转速设定值进行比较;在实际转速小于转速设定值的情况下,维持实际转速;在实际转速大于或等于转速设定值的情况下,以转速设定值为目标值降低压缩机的转速,并且降速速率配置为第一调速速率。
限制调频功率范围可以根据压缩机的正常运行功率进行设置,也即限制调频功率范围为高于压缩机的正常运行功率的数值范围。在该限制调频功率范围内,压缩机仅允许下调,而禁止上调,从而避免压缩机功率进一步升高。
例如对于一般运行功率不超过200W的压缩机,可以将200W左右的数值范围作为限制调频功率范围,具体地可以设置为197W至204W。在197W至204W的限制调频功率范围内,压缩机可被认为功率可能超限。在该状况下,压缩机的转速仅允许下调,而禁止上调,从而避免压缩机功率进一步升高,使得压缩机可以稳定运行。进一步地,降速速率可以配置为预设的第一调速速率,例如每200ms降低5转,尽量保证压缩机可以平顺调整。在一般情况下,通过平稳的降频,可以使得压缩机功率恢复至限制调频功率范围以下正常功率范围内。
需要说明的是,本实施例中例举数值仅以具体应用实例进行示例,本领域技术人员可以根据压缩机的规格等情况,对相应数值进行配置。
步骤S202中获取压缩机的实际功率可以通过对压缩机的供电信号进行采集得到,其可以包括采集压缩机的供电信号,并根据供电信号计算压缩机的实际功率。上述电信号包括电压信号以及电流信号。
图3是根据本发明一个实施例的用于冰箱的压缩机控制方法中进行电压信号采集的电路示意图,图4是是根据本发明一个实施例的用于冰箱的压缩机控制方法中进行电流信号采集的电路示意图。
根据功率的计算公式:功率=电压*电流,压缩机的实际功率可以通过压缩机的供电电压以及供电电流计算得到。为了提高精度,电压信号和电流信号可以均优选采用高精度A/D采样(例如采用12位A/D转换)。在电压采 集电路中,OVP用于连接一路A/D转换器,从而向该路A/D转换器提供电压信号。在电流采集电路中,I_line用于连接另一路A/D转换器,从而向A/D转换器提供电流信号。A/D转换可以使用处理器的内置A/D转换功能。
在一般工况下,压缩机使用工频电源进行供电,也即一般可以采用220V的交流电源进行供电,经过整流滤波后,电压VDC约为310V。经过R1、R2、R3、R4的串联分压,从OVP输出的分压信号约为2.5V。R5、C1分别用于稳压限流。
在电流信号采集电路中,I_shunt连接变频器VVVF中驱动压缩机的IGBT三个下桥臂的公共端,以得到供电电流信号。由于电流信号较弱,电流信号采集电路采用由RS、R6、R7、R8、R9、R10、R11、C2以及运算放大器OP构成的放电电路进行放大,例如可以配置放大倍数为5倍的放大电路。经过放大器的放大处理,电流信号可以转换为相应的电压,以供A/D进行采样。对于电源电流一般不超过5A的压缩机,可以将电流信号采集电路配置为在电流为0时对应于2.5V电压输出,在电流为5A时对应于5V电压输出。如果电流超过5A,则认为需要过流保护。
经过采样处理后的电压电流可以被处理器进行计算,得到实际功率。
压缩机的实际转速可以根据变频器的输出频率确定,频率与压缩机转速成正比(比例由电机的电极数确定)。例如对于一种实际使用的变频压缩机的转速n=30*f,f为供电频率,并由变频板受控调整,60Hz对应1800转每秒。
压缩机的转速设定值一般根据冰箱的制冷状态进行设置,由于压缩机的转速变化导致制冷量相应变化,因此在压缩机正常运行时可以通过提高压缩机的转速来提供制冷量。在本实施例中,确定压缩机的转速设定值的步骤可以包括:采集冰箱的运行参数;在预先配置的对应表查询得出运行参数对应的转速设定值,运行参数可以包括冰箱的设定冷冻温度以及冰箱的运行环境温度,并且对应表预先配置有设定冷冻温度、运行环境温度与转速设定值的对应关系。
表1是本实施例的用于冰箱的压缩机控制方法中对应表的具体实例。
表1
Figure PCTCN2021139645-appb-000001
从表1中可以看出随着环温RT的上升、冷冻设定温度的下降,冰箱所需的制冷量提高,此时可以相应提高压缩机的转速。对应地,随着环温RT的下降、冷冻设定温度的提高,冰箱所需的制冷量降低,此时可以相应降低压缩机的转速。表中的数值仅为示例,本领域技术人员可以根据压缩机及冰箱规格对相应数值进行配置。
表1所示的设定转速是压缩机功率在正常运行范围内的调整方式。对于一般运行功率不超过200W的压缩机,可以将小于197W的功率范围作为正常运行范围,在该运行范围内,在出现压缩机的实际转速与设定转速出现偏差时,可以相应调整。
也就是说,在判断实际功率小于预设的限制调频功率范围的最低值的情况下,还可以转速设定值为目标值调整压缩机的转速。具体地,如果实际转速小于转速设定值,以第三调速速率提高实际转速;如果实际转速大于转速设定值,以第四调速速率降低实际转速,其中第三调速速率大于第四调速速率,即升速速率可以大于降速速率。例如可以在提高转速时,第三调速速率可以为每200毫秒升5转,第四调速速率可以为每200毫秒降2转。这样的调节方式,可以使得压缩机运行更加平顺,避免调速过快导致的过度损耗。其中第三调速速率大于第四调速速率,可以更加符合压缩机的运行特点,有利于降低压缩机的能耗。
在实际功率大于预设的限制调频功率范围的最大值的情况下,还可以进一步判断实际功率是否大于预设的功率保护阈值,并且如果实际功率大于功率保护阈值,直接降低压缩机的转速。功率保护阈值大于限制调频功率范围的最大值,其可以预先根据测试进行配置,例如对于一般运行功率不超过200W的压缩机,在限制调频功率范围设置为197W至204W的情况下,功 率保护阈值可以设置为210W。也即一旦压缩机的实际功率超出210W,直接通过降速来降低压缩机功率。在此情况下,降速速率配置为第二调速速率,并且第二调速速率大于第一调速速率,通过快速降频,稳定压缩机的状态。例如可以每200毫秒降8转,尽量在不停机的情况下,降低压缩机功率。
在实际功率大于功率保护阈值的情况下,如果出现转速设定值小于预设的第一低速阈值,则控制压缩机停机。第一低速阈值可以根据压缩机的运行情况预先配置。例如对于表1所示的压缩机,可以设置为1800转。如果压缩机的实际转速低于第一低速阈值而实际功率仍然大于功率保护阈值可以认为压缩机出现异常,此时可以直接停机。
在实际功率大于限制调频功率范围的最大值的情况下,如果出现压缩机的实际转速小于预设的第二低速阈值,也可以控制压缩机停机。第二低速阈值也可以根据压缩机的运行情况预先配置,其可以设置为与第一低速阈值相同或者不同。例如对于表1所示的压缩机,同样也可以设置为1800转。在该情况下,可以认为不需要进一步降速,从而可以直接使压缩机停机。
上述强制停机仅仅发生确定压缩机出现异常状态的情况下。也即压缩机仅在极端状态下才会被强制停机,其保护停机率大大低于现有的压缩机保护措施,从而减小了压缩机损耗,提高了压缩机的可靠性。
在控制压缩机停机之后还可以经过设定时间后重启压缩机,并对压缩机的重启次数进行计数;在重启次数超出设定次数阈值后,停止重启压缩机并输出报警信号;并且在出现压缩机持续运行状态下的实际功率小于限制调频功率范围的最小值的情况后,重启次数被清零。例如在压缩机因功率超限而强制停机时,可以在设定时间(可以设置为10s至50s,例如30s)后重启压缩机,通过自动重启来排除故障。
如果在重启后,压缩机重复因功率超限而强制停机的次数超过次数阈值(可以设置为2至10次,例如5次),可以认为压缩机已经无法通过自动重启来排除故障,此时停止重启压缩机,并可以输出报警信号,以便及时进行维修。如果压缩机的异常通过重启被排除,也即压缩机的实际功率稳定运行于限制调频功率范围最小值以下的数值范围内,那么可以清零重启次数,恢复压缩机的正常工作。
以下针对一种具体实例,介绍上述压缩机控制方法的控制逻辑。例如对于正常运行功率不超过200W,限制调频功率范围设置为197W至204W, 功率保护阈值设置为210W,转速设定值如表1所示的一种具体压缩机,其控制逻辑可以为:
若压缩机实际功率超过210W,压缩机开始降速,降速速度为每200毫秒,降8转。如果此时设定的转速设定值低于1800转,可以认为压缩机不需要继续降速,可以直接控制压缩机停机。
在压缩机降速的过程中,如果实际功率小于204W,进入限制调频功率范围(197W至204W)。如果压缩机的实际转速低于1800转,则同样可以任务压缩机不需要继续降速,可以直接控制压缩机停机。
如果出现上述的强制压缩机停机的情况,可以在30秒后尝试重新启动压缩机。如果压缩机重复因功率超限而强制停机的次数超过5次,则不再尝试重新启动。
在压缩机的异常状态通过重启被排除,也即压缩机重新启动后,实际功率稳定在197W以下,那么可以清零重启次数,恢复压缩机的正常工作。
在197W至204W的限制调频功率范围内,如果压缩机的设定转速小于实际转速,则每200毫秒降5转,直至将至压缩机的设定转速。如果设定转速大大于实际转速,则维持实际转速,不进行升速。
在压缩机的实际功率恢复至197W以下,以转速设定值为目标值调整压缩机的转速。在需要升速时,每200毫秒升5转;在需要降速时,每200毫秒降2转。
需要说明的是,本实施例中数值仅为例举,本领域技术人员可以根据压缩机规格以及实际测试结果,对相应数值进行配置。
本实施例的用于冰箱的压缩机控制方法,在压缩机功率稍高,达到限制调频功率范围时,通过限制压缩机升速,来避免压缩机功率进一步升高,维持压缩机稳定运行,尽量避免压缩机直接停机,大大降低了压缩机的异常启停的次数。通过对压缩机异常停机后的重启策略进行优化,在一定程度上可以使压缩机恢复正常运行。同时压缩机无法自动恢复正常时,停止重启压缩机,避免故障恶化,便于及时维修。
至此,本领域技术人员应认识到,虽然本文已详尽示出和描述了本发明的多个示例性实施例,但是,在不脱离本发明精神和范围的情况下,仍可根据本发明公开的内容直接确定或推导出符合本发明原理的许多其他变型或修改。因此,本发明的范围应被理解和认定为覆盖了所有这些其他变型或修 改。

Claims (10)

  1. 一种用于冰箱的压缩机控制方法,包括:
    获取所述压缩机的实际功率和实际转速,并确定所述压缩机的转速设定值;
    判断所述实际功率是否属于预设的限制调频功率范围;
    若是,将所述压缩机的实际转速与所述转速设定值进行比较;
    在所述实际转速小于所述转速设定值的情况下,维持所述实际转速;
    在所述实际转速大于或等于所述转速设定值的情况下,以所述转速设定值为目标值降低所述压缩机的转速,并且降速速率配置为第一调速速率。
  2. 根据权利要求1所述的用于冰箱的压缩机控制方法,其中
    在所述实际功率大于预设的限制调频功率范围的最大值的情况下,还包括:
    判断所述实际功率是否大于预设的功率保护阈值,所述功率保护阈值大于所述限制调频功率范围的最大值;
    若是,降低所述压缩机的转速,并且降速速率配置为第二调速速率,并且所述第二调速速率大于所述第一调速速率。
  3. 根据权利要求2所述的用于冰箱的压缩机控制方法,其中
    在所述实际功率大于所述功率保护阈值的情况下,如果出现所述转速设定值小于预设的第一低速阈值,则控制所述压缩机停机。
  4. 根据权利要求2所述的用于冰箱的压缩机控制方法,其中
    在所述实际功率大于所述限制调频功率范围的最大值的情况下,如果出现所述压缩机的实际转速小于预设的第二低速阈值,则控制所述压缩机停机。
  5. 根据权利要求3或4所述的用于冰箱的压缩机控制方法,其中在控制所述压缩机停机的步骤之后还包括:
    经过设定时间后重启所述压缩机,并对所述压缩机的重启次数进行计数;
    在所述重启次数超出设定次数阈值后,停止重启并输出报警信号;并且在出现所述压缩机持续运行状态下的实际功率小于所述限制调频功率范围的最小值的情况后,所述重启次数被清零。
  6. 根据权利要求1所述的用于冰箱的压缩机控制方法,其中
    在所述判断所述实际功率小于预设的限制调频功率范围的最低值的情况下,还包括:以所述转速设定值为目标值调整所述压缩机的转速。
  7. 根据权利要求6所述的用于冰箱的压缩机控制方法,其中
    所述以所述转速设定值为目标值调整所述压缩机的转速的步骤包括:
    若所述实际转速小于所述转速设定值,以第三调速速率提高所述实际转速;
    若所述实际转速大于所述转速设定值,以第四调速速率降低所述实际转速,其中所述第三调速速率大于所述第四调速速率。
  8. 根据权利要求1所述的用于冰箱的压缩机控制方法,其中所述获取所述压缩机的实际功率的步骤包括:
    采集所述压缩机的供电信号,并根据所述供电信号计算所述压缩机的实际功率。
  9. 根据权利要求1所述的用于冰箱的压缩机控制方法,其中确定所述压缩机的转速设定值的步骤包括:
    采集所述冰箱的运行参数;
    在预先配置的对应表查询得出所述运行参数对应的所述转速设定值,所述运行参数包括冰箱的设定冷冻温度以及冰箱的运行环境温度,并且所述对应表预先配置有所述设定冷冻温度、所述运行环境温度与所述转速设定值的对应关系。
  10. 一种冰箱,包括:
    压缩机;以及
    控制器,所述控制器包括存储器和处理器,其中所述存储器存储有机器 可执行程序,所述机器可执行程序被处理器执行时实现根据权利要求1至9中任意一项的用于冰箱的压缩机控制方法。
PCT/CN2021/139645 2021-05-13 2021-12-20 用于冰箱的压缩机控制方法与冰箱 WO2022237172A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110521996.0 2021-05-13
CN202110521996.0A CN115342562B (zh) 2021-05-13 2021-05-13 用于冰箱的压缩机控制方法与冰箱

Publications (1)

Publication Number Publication Date
WO2022237172A1 true WO2022237172A1 (zh) 2022-11-17

Family

ID=83946502

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/139645 WO2022237172A1 (zh) 2021-05-13 2021-12-20 用于冰箱的压缩机控制方法与冰箱

Country Status (2)

Country Link
CN (1) CN115342562B (zh)
WO (1) WO2022237172A1 (zh)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6181538B1 (en) * 1999-02-19 2001-01-30 Samsung Electronics Co., Ltd. Compressor control device for refrigerator and method thereof
CN106246523A (zh) * 2016-08-18 2016-12-21 合肥美的电冰箱有限公司 变频压缩机控制方法、控制器及冰箱
CN106642979A (zh) * 2016-12-29 2017-05-10 合肥华凌股份有限公司 压缩机控制方法和控制装置以及冰箱
CN108061426A (zh) * 2017-12-07 2018-05-22 合肥华凌股份有限公司 冰箱的控制方法、冰箱及计算机可读存储介质
CN108332464A (zh) * 2018-02-09 2018-07-27 珠海格力电器股份有限公司 压缩机控制方法、控制装置及空调机组
CN108708847A (zh) * 2018-05-28 2018-10-26 四川长虹精密电子科技有限公司 变频压缩机过功率保护方法
CN108759295A (zh) * 2018-07-18 2018-11-06 长虹美菱股份有限公司 一种冰箱冷凝器风机转速控制方法
CN108759296A (zh) * 2018-07-18 2018-11-06 长虹美菱股份有限公司 一种风冷冰箱的风机转速控制方法
KR20190029369A (ko) * 2017-09-12 2019-03-20 엘지전자 주식회사 공기조화기
CN111102681A (zh) * 2019-12-16 2020-05-05 珠海格力电器股份有限公司 压缩机加热装置控制方法、计算机可读存储介质和空调
CN111963414A (zh) * 2020-07-02 2020-11-20 惠州市德赛西威汽车电子股份有限公司 一种准确计算压缩机请求功率与限制功率的方法及系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621718B2 (ja) * 1986-05-26 1994-03-23 三洋電機株式会社 冷凍装置の能力制御方法
JPH0210061A (ja) * 1988-06-29 1990-01-12 Hitachi Ltd 空気調和機
CN107024047B (zh) * 2017-03-30 2019-06-28 广东美的制冷设备有限公司 压缩机控制方法和装置
CN109386998B (zh) * 2017-08-04 2020-12-01 奥克斯空调股份有限公司 一种变频空调器保护控制方法
CN110953776A (zh) * 2019-11-22 2020-04-03 海信(山东)冰箱有限公司 制冷设备和制冷设备的压缩机的停机控制方法
CN111156748B (zh) * 2019-12-25 2020-12-22 珠海格力电器股份有限公司 一种变频空调限制功率控制方法、存储介质及空调

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6181538B1 (en) * 1999-02-19 2001-01-30 Samsung Electronics Co., Ltd. Compressor control device for refrigerator and method thereof
CN106246523A (zh) * 2016-08-18 2016-12-21 合肥美的电冰箱有限公司 变频压缩机控制方法、控制器及冰箱
CN106642979A (zh) * 2016-12-29 2017-05-10 合肥华凌股份有限公司 压缩机控制方法和控制装置以及冰箱
KR20190029369A (ko) * 2017-09-12 2019-03-20 엘지전자 주식회사 공기조화기
CN108061426A (zh) * 2017-12-07 2018-05-22 合肥华凌股份有限公司 冰箱的控制方法、冰箱及计算机可读存储介质
CN108332464A (zh) * 2018-02-09 2018-07-27 珠海格力电器股份有限公司 压缩机控制方法、控制装置及空调机组
CN108708847A (zh) * 2018-05-28 2018-10-26 四川长虹精密电子科技有限公司 变频压缩机过功率保护方法
CN108759295A (zh) * 2018-07-18 2018-11-06 长虹美菱股份有限公司 一种冰箱冷凝器风机转速控制方法
CN108759296A (zh) * 2018-07-18 2018-11-06 长虹美菱股份有限公司 一种风冷冰箱的风机转速控制方法
CN111102681A (zh) * 2019-12-16 2020-05-05 珠海格力电器股份有限公司 压缩机加热装置控制方法、计算机可读存储介质和空调
CN111963414A (zh) * 2020-07-02 2020-11-20 惠州市德赛西威汽车电子股份有限公司 一种准确计算压缩机请求功率与限制功率的方法及系统

Also Published As

Publication number Publication date
CN115342562A (zh) 2022-11-15
CN115342562B (zh) 2023-08-15

Similar Documents

Publication Publication Date Title
JP2021081179A5 (zh)
US8838277B2 (en) Systems and methods involving heating and cooling system control
US7793509B2 (en) System and method for capacity control in a multiple compressor chiller system
CN104990211B (zh) 多机头变频离心式中央空调机组的控制方法
CN109028491B (zh) 一种变频空调压缩机软启动方法、系统及空调器
CN109099556A (zh) 空调低温制冷控制方法及空调器
CN110260492B (zh) 一种变频空调制冷模式下的风机及压缩机控制方法
CN111023420B (zh) 一种压缩机快速启动控制方法、装置、空调器及存储介质
CN112393482B (zh) 变频风冷冷水机组及其变工况启动控制方法
CN107218705B (zh) 室外电机的控制方法、空调器、及存储介质
CN109751911B (zh) 冷却塔风机频率自适应调节方法及空调系统
WO2022012568A1 (zh) 压缩机的控制方法、控制装置和换热系统
US20140343733A1 (en) Systems And Methods For Compressor Overspeed Control
CN115638528B (zh) 风冷式冷水机组系统及其控制方法、控制器和存储介质
CN112074693A (zh) 变频控制系统及其控制方法
CN113503664A (zh) 变频压缩机控制方法及制冷器具
CN114811860B (zh) 多联机空调系统控制方法及多联机空调系统
JP2009515130A (ja) 多重圧縮機冷却器システムでの能力制御のためのシステムおよび方法
WO2022237172A1 (zh) 用于冰箱的压缩机控制方法与冰箱
CN111256438B (zh) 具有二级防冰堵保护的冷冻式干燥系统的工作方法
JP5971964B2 (ja) ターボ冷凍機
CN110440406B (zh) 一种风机控制方法、装置及机组设备
CN114738955A (zh) 空调器及其控制方法和控制装置
CN114508808B (zh) 一种磁悬浮变频冷水机组
JP2020079688A (ja) ターボ冷凍機

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21941734

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21941734

Country of ref document: EP

Kind code of ref document: A1