WO2017076099A1 - 采用直线压缩机的冰箱控制方法及控制系统 - Google Patents

采用直线压缩机的冰箱控制方法及控制系统 Download PDF

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Publication number
WO2017076099A1
WO2017076099A1 PCT/CN2016/095269 CN2016095269W WO2017076099A1 WO 2017076099 A1 WO2017076099 A1 WO 2017076099A1 CN 2016095269 W CN2016095269 W CN 2016095269W WO 2017076099 A1 WO2017076099 A1 WO 2017076099A1
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Prior art keywords
output power
linear compressor
ambient temperature
refrigerator
operating state
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PCT/CN2016/095269
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English (en)
French (fr)
Inventor
戚斐斐
朱小兵
刘建如
姬立胜
张书锋
Original Assignee
青岛海尔股份有限公司
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Application filed by 青岛海尔股份有限公司 filed Critical 青岛海尔股份有限公司
Priority to EP16861368.5A priority Critical patent/EP3372934B1/en
Priority to US15/750,501 priority patent/US10591196B2/en
Publication of WO2017076099A1 publication Critical patent/WO2017076099A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, 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
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, 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
    • F04B49/12—Control, 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 by varying the length of stroke of the working members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/073—Linear compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/31—Low ambient temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2106—Temperatures of fresh outdoor air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F25B31/023—Compressor arrangements of motor-compressor units with compressor of reciprocating-piston type

Definitions

  • the invention relates to the technical field of refrigerators and linear compressors, in particular to a refrigerator control method and a control system using a linear compressor.
  • a driven fluid machine that boosts low pressure gas into high pressure gas is the heart of the refrigeration system. It sucks low-temperature and low-pressure refrigerant gas from the suction pipe, drives the piston to compress it by running the motor, and then discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle, thereby achieving compression ⁇ condensation (heat release) ) ⁇ expansion ⁇ evaporation (endothermic) refrigeration cycle.
  • Linear compressors are widely used in small refrigeration fields such as refrigerators. They are simple in structure, low in friction loss, low in noise, easy to adjust flow by adjusting voltage, simple and reliable in frequency conversion adjustment, and can achieve less oil or oil-free lubricating oil.
  • a Chinese patent, such as CN 203394701U discloses a linear compressor, which, as shown in FIG. 1, includes an exhaust mechanism 1 and a compressor assembly.
  • the compressor assembly includes a cylinder 16, a piston assembly, a moving magnet linear oscillation motor,
  • the resonant spring 8, the compressor casing, the piston assembly includes a piston 2, a piston rod 3, a rod end plate 10, and an intake valve 15;
  • the exhaust mechanism 1 includes an exhaust valve plate 17, an exhaust valve plate 18, and the like.
  • the linear compressor is electronically controlled during the working process.
  • the linear compressor piston 2 has a small stroke, and it is easy to cause the piston 2 to collide with the exhaust valve plate 18 to cause the compressor to fail.
  • a protection program will be set to prevent damage to the mechanical parts of the compressor.
  • the linear compressor inverter board will start the protection program to stop the linear compressor.
  • the technical problem solved by the present invention is to provide a refrigerator control method and control system using a linear compressor.
  • a refrigerator control method using a linear compressor comprising:
  • the output power of the linear compressor is controlled to be a preset first output power, and if T is less than or equal to T0, the output power of the linear compressor is controlled to be a preset second output power, The second output power is greater than the first output power.
  • the method further comprises:
  • the value of the second output power is updated with the current output power.
  • the method further comprises:
  • the third output power is associated with the ambient temperature T, and when the ambient temperature is less than or equal to T, the linear compressor is started with a third output power.
  • monitoring the operating state of the linear compressor specifically includes:
  • the linear compressor has a longer running time at the first output power than each time at the second output power.
  • a refrigerator control system using a linear compressor comprising a temperature monitoring device and a main control board connected to the temperature monitoring device, wherein
  • the temperature monitoring device is configured to monitor an ambient temperature T at which the refrigerator is located;
  • the main control board is configured to compare the ambient temperature T with a preset ambient temperature threshold T0;
  • the main control board is further configured to control the output power of the linear compressor. If T is greater than T0, the output power of the linear compressor is controlled to be a preset first output power. If T is less than or equal to T0, the control station The output power of the linear compressor is a preset second output power, wherein the second output power is greater than the first output power.
  • the main control board is further configured to monitor an operating state of the linear compressor, and when the operating state of the linear compressor is abnormal, increase a predetermined amplitude on the second output power. After the linear compressor operating state is normal, the value of the second output power is updated with the current output power.
  • the main control board is further configured to monitor an operating state of the linear compressor, and when the operating state of the linear compressor is abnormal, a predetermined amplitude is increased on the current output power, and the The output power is set to a third output power, and when the linear compressor operating state is normal, the third output power is associated with the ambient temperature T, and when the ambient temperature is less than or equal to T, the third output power is The linear compressor is started.
  • the main control board is further configured to determine whether the linear compressor is unexpectedly stopped when operating within a predetermined time, and if so, the linear compressor operating state is considered abnormal.
  • the main control board is further configured to control the linear compressor to have a longer running time each time the first output power is lower than a running time of the second output power.
  • the present invention increases the output of the linear compressor by increasing the output power of the linear compressor, thereby avoiding the linear compressor being protected by the frequency conversion board and causing the refrigerator to fail to work normally.
  • FIG. 1 is a schematic structural view of a linear compressor in the prior art.
  • FIG. 2 is a flow chart of a method of controlling a refrigerator in a first embodiment of the present invention.
  • FIG. 3 is a schematic block diagram of a refrigerator control system according to a first embodiment of the present invention.
  • FIG. 4 is a flow chart of a method of controlling a refrigerator in a second embodiment of the present invention.
  • Fig. 5 is a flow chart showing a method of controlling a refrigerator in a third embodiment of the present invention.
  • the control method includes:
  • the output power of the linear compressor is controlled to be a preset first output power, and if T is less than or equal to T0, the output power of the linear compressor is controlled to be a preset second output power, wherein, second The output power is greater than the first output power.
  • a refrigerator control system using a linear compressor is further disclosed in the embodiment, which includes a temperature detecting device 100 and a main control board 200 connected to the temperature monitoring device, wherein:
  • the temperature monitoring device 100 is used to monitor the ambient temperature T where the refrigerator is located;
  • the main control board 200 is configured to compare the ambient temperature T with a preset ambient temperature threshold T0;
  • the main control board 200 is also used to control the output power of the linear compressor. If T is greater than T0, the output power of the linear compressor is controlled to be a preset first output power, and if T is less than or equal to T0, the linear compressor is controlled.
  • the output power is a preset second output power, wherein the second output power is greater than the first output power.
  • the ambient temperature T in the present embodiment is acquired by a temperature sensor, and the temperature sensor is disposed on the refrigerator cabinet.
  • the temperature sensor can be obtained by other temperature detecting devices, such as a thermometer.
  • the present invention belongs to a control method of a refrigerator at a low temperature
  • the preset ambient temperature threshold T0 is a threshold for defining a "low temperature" in the present invention. If the preset ambient temperature threshold T0 can be set to 10 ° C, the ambient temperature T ⁇ The case of 10 ° C is in the category of low temperature. Of course, 10 ° C is only a preferred ambient temperature threshold of the present invention, and in other embodiments, other temperature values, such as 5 ° C, 0 ° C, etc., may be set in the preset environment. When the temperature threshold T0 is set to other temperatures, the definition of the corresponding "low temperature" is different.
  • the existing linear compressor frequency conversion board generally sets a frequency conversion protection program, and the frequency conversion protection is turned on when the piston hits the exhaust valve plate, so that the refrigerator stops working. In order to avoid the linear compressor being protected by the frequency conversion board, when the refrigerator is working at low temperature, it is necessary to forcibly change the operating condition of the refrigerator.
  • the output power of the linear compressor is controlled to be a preset first output power P1
  • the output power of the linear compressor is controlled to be a preset The second output power P2, wherein the second output power P2 is greater than the first output power P1.
  • the linear compressor When the ambient temperature T is lower than the preset ambient temperature threshold T0, the heat load of the refrigerator is lower, and the cooling capacity required for the compartment is relatively low. At this time, the linear compressor will operate at a lower output power, and the linear compressor The output power is related to the stroke of the piston. The lower the output power of the linear compressor, the smaller the piston stroke. In the embodiment, by increasing the output power of the linear compressor, thereby increasing the stroke of the piston in the linear compressor, the collision between the piston and the exhaust valve plate is avoided, and the frequency conversion plate is avoided. The inverter protection program will not be turned on and the refrigerator will operate normally.
  • the cooling capacity provided by the linear compressor for the compartment is increased per unit time, and the compartment is required under the conditions of the first output power P1 and the second output power P2.
  • the amount of cooling is equal, so that the time at which the linear compressor provides the same amount of cooling at the second output power P2 is less than the time at which the first output power P1 is operated.
  • the monitored ambient temperature T is 0 ° C
  • the preset ambient temperature threshold T0 is 10 ° C
  • the linear compressor output power is increased from the first output power 20 W to the second
  • the output power is 30W, which increases the stroke of the piston in the linear compressor.
  • the control method includes:
  • the output power of the linear compressor is controlled to be a preset first output power, and if T is less than or equal to T0, the output power of the linear compressor is controlled to be a preset second output power, wherein, second The output power is greater than the first output power;
  • the embodiment further includes:
  • the value of the second output power is updated with the current output power.
  • the present embodiment also discloses a refrigerator control system using a linear compressor, which comprises a temperature detecting device and a main control board connected to the temperature monitoring device, wherein:
  • the temperature monitoring device is used for monitoring the ambient temperature T where the refrigerator is located;
  • the main control board is configured to compare the ambient temperature T with a preset ambient temperature threshold T0;
  • the main control board is also used to control the output power of the linear compressor. If T is greater than T0, the output power of the linear compressor is controlled to be a preset first output power, and if T is less than or equal to T0, the output of the linear compressor is controlled.
  • the power is a preset second output power, wherein the second output power is greater than the first output power;
  • the main control board is also used to monitor the running state of the linear compressor. When the running state of the linear compressor is abnormal, the predetermined output value is increased on the second output power. When the running state of the linear compressor is normal, the current output power is updated. The value of the second output power.
  • the monitored ambient temperature T is 0 ° C
  • the preset ambient temperature threshold T0 is 10 ° C
  • the linear compressor output power is increased from the first output power 20 W to the second The output power is 30W.
  • Monitor the running state of the linear compressor If the linear compressor is running abnormally, increase the predetermined amplitude by 5W based on the second output power of 30W, and the linear compressor will run at 35W output power. If the linear compressor runs at 35W output power When the state is normal, the second output power P2 is updated to 35W. Thereafter, if the ambient temperature is lower than 10 ° C, the compressor is directly increased from the first output power 20 W to the updated second output power 35 W in the next operation.
  • the linear compressor operation state will be continuously monitored. If the linear compressor operating state is abnormal, the output power will continue to increase according to the predetermined amplitude of 5W, such as increasing to 50W.
  • the second output power is updated to 50W. Thereafter, if the ambient temperature is lower than 10 ° C, the compressor will increase directly from the first output power 20 W to the second output power 50 W in the next operation.
  • the control process of the output power of the entire linear compressor is a dynamic cycle process, and the second output power is a dynamically updated value. When the linear compressor is started at a low temperature, it is not necessary to increase the predetermined amplitude from 30W each time.
  • the control method includes:
  • the output power of the linear compressor is controlled to be a preset first output power, and if T is less than or equal to T0, the output power of the linear compressor is controlled to be a preset second output power, wherein, second The output power is greater than the first output power;
  • the embodiment further includes:
  • the third output power is associated with the ambient temperature T, and when the ambient temperature is less than or equal to T, the linear compressor is started with the third output power.
  • the present embodiment also discloses a refrigerator control system using a linear compressor, which comprises a temperature detecting device and a main control board connected to the temperature monitoring device, wherein:
  • the temperature monitoring device is used for monitoring the ambient temperature T where the refrigerator is located;
  • the main control board is configured to compare the ambient temperature T with a preset ambient temperature threshold T0;
  • the main control board is also used to control the output power of the linear compressor. If T is greater than T0, the output power of the linear compressor is controlled to be a preset first output power, and if T is less than or equal to T0, the output of the linear compressor is controlled.
  • the power is a preset second output power, wherein the second output power is greater than the first output power;
  • the main control board is also used to monitor the running status of the linear compressor; when the linear compressor is running abnormally, the current output The power is increased by a predetermined amplitude, and the increased output power is set to a third output power; when the linear compressor operating state is normal, the third output power is associated with the ambient temperature T, when the ambient temperature is less than or equal to T When the linear compressor is started with the third output power.
  • the monitored ambient temperature T is 0 ° C
  • the preset ambient temperature threshold T0 is 10 ° C
  • the linear compressor output power is increased from the first output power 20 W to the second The output power is 30W.
  • the linear compressor operating state is monitored. If the linear compressor is operating abnormally, the predetermined output voltage is increased by 5 W based on the current output power of 30 W, and the linear compressor is operated with an output power of 35 W. At the same time, the current output power of 35 W is set to The third output power P3.
  • the running state of the linear compressor is continuously monitored. If the running state of the linear compressor is abnormal, the current output power is continuously increased according to the predetermined amplitude of 5 W until the linear compressor The output power is stopped after the running state is normal, and the current output power is set to the third output power P3. If the linear compressor is normally operated when the output power of the linear compressor is increased to 50 W in this embodiment, the current output power 50 W is updated to the third output power, and the ambient temperature at this time is 0 ° C and the corresponding third output. The power is 50W for correlation.
  • the linear compressor is started with the third output power of 50 W; if the ambient temperature is between 0 °C and 10 °C, Then, the linear compressor is started at the second output power of 30 W.
  • the control process of the output power of the entire linear compressor in this embodiment is also a dynamic cycle process, and the third output power is a dynamically updated value, and the linear compressor does not need to be scheduled from 30W every time when starting at a low temperature.
  • the amplitude increases.
  • first output power and the second output power preset in the embodiments of the present invention are 20W and 30W, and the predetermined amplitude of the output power increase is 5W.
  • first output power and The difference in the second output power may also be a predetermined amplitude, and the linear compressor gradually increases from the first output power 20W by a predetermined amplitude 5W after the low temperature operation, and updates the second output power in real time.
  • the present invention increases the output of the linear compressor by increasing the output power of the linear compressor, thereby avoiding the linear compressor being protected by the frequency conversion board and causing the refrigerator to fail to work normally.

Abstract

一种采用直线压缩机的冰箱控制方法及控制系统，所述控制方法包括：监测冰箱所处的环境温度T；将所述环境温度T与预设环境温度阈值T0比较；若T大于T0，则控制所述直线压缩机的输出功率为预设的第一输出功率，若T小于或等于T0，则控制所述直线压缩机的输出功率为预设的第二输出功率，其中，所述第二输出功率大于所述第一输出功率。通过控制直线压缩机的输出功率，以增加直线压缩机内活塞的行程，避免了直线压缩机被变频板保护而导致冰箱无法正常工作。

Description

采用直线压缩机的冰箱控制方法及控制系统 技术领域
本发明涉及冰箱及直线压缩机技术领域，尤其涉及一种采用直线压缩机的冰箱控制方法及控制系统。
背景技术
压缩机将低压气体提升为高压气体的一种从动的流体机械，是制冷系统的心脏。它从吸气管吸入低温低压的制冷剂气体，通过电机运转带动活塞对其进行压缩后，向排气管排出高温高压的制冷剂气体，为制冷循环提供动力，从而实现压缩→冷凝(放热)→膨胀→蒸发(吸热)的制冷循环。
直线压缩机广泛应用于冰箱等小制冷量领域，其结构简单、摩擦损耗少、噪音低、可方便地通过调节电压调节流量、比变频调节简单可靠、可以实现少油或无油润滑油等优点。如CN 203394701U的中国专利公开了一种直线压缩机，结合图1所示，其包括排气机构1和压缩机组件二部分，压缩机组件包括气缸16、活塞组件、动磁式直线振荡电机、谐振弹簧8、压缩机机壳，活塞组件包括活塞2、活塞杆3、杆端板10和吸气阀15；排气机构1包括排气阀片17、排气阀板18等。
直线压缩机工作过程中为电子控制，当输出功率小时，直线压缩机活塞2行程较小，极易发生活塞2与排气阀板18相撞的情况造成压缩机失效。为此，直线压缩机变频板设计时，会设置保护程序，防止压缩机机械部件受损，例如，直线压缩机变频板会启动保护程序让直线压缩机停止工作。
冰箱在低温下工作时，冰箱的热负荷较低，间室需要的制冷量也会相对较低，此时，直线压缩机会以较低的输出功率运行，导致直线压缩机活塞的行程小，存在撞击排气阀板的隐患。
发明内容
针对现有技术的不足，本发明解决的技术问题是提供一种采用直线压缩机的冰箱控制方法及控制系统。
为解决上述技术问题，本发明的技术方案是这样实现的：
一种采用直线压缩机的冰箱控制方法，所述控制方法包括：
监测冰箱所处的环境温度T；
将所述环境温度T与预设环境温度阈值T0比较；
若T大于T0，则控制所述直线压缩机的输出功率为预设的第一输出功率，若T小于或等于T0，则控制所述直线压缩机的输出功率为预设的第二输出功率，其中，所述第二输出功率大于所述第一输出功率。
作为本发明的进一步改进，所述方法还包括：
监控所述直线压缩机运行状态；
当所述直线压缩机运行状态异常时，在所述第二输出功率上增加预定幅值；
当所述直线压缩机运行状态正常后，以当前的输出功率的大小更新所述第二输出功率的值。
作为本发明的进一步改进，所述方法还包括：
监控所述直线压缩机运行状态；
当所述直线压缩机运行状态异常时，在当前的输出功率上增加预定幅值，并将增加后的输出功率设置为第三输出功率；
当所述直线压缩机运行状态正常后，将所述第三输出功率与所述环境温度T关联，当环境温度小于或等于T时，以第三输出功率启动所述直线压缩机。
作为本发明的进一步改进，监控所述直线压缩机运行状态具体包括：
判断所述直线压缩机在预定时间内运行时是否意外停止；
若是，则认为所述直线压缩机运行状态为异常。
作为本发明的进一步改进，所述直线压缩机在所述第一输出功率下每次的运行时间比在所述第二输出功率下每次的运行时间长。
相应地，一种采用直线压缩机的冰箱控制系统，所述控制系统包括温度监测装置和与所述温度监测装置相连的主控板，其中，
所述温度监测装置用于监测冰箱所处的环境温度T；
所述主控板用于将所述环境温度T与预设环境温度阈值T0比较；
所述主控板还用于控制直线压缩机的输出功率，若T大于T0，则控制所述直线压缩机的输出功率为预设的第一输出功率，若T小于或等于T0，则控制所述直线压缩机的输出功率为预设的第二输出功率，其中，所述第二输出功率大于所述第一输出功率。
作为本发明的进一步改进，所述主控板还用于监控所述直线压缩机运行状态，当所述直线压缩机运行状态异常时，在所述第二输出功率上增加预定幅值，当所述直线压缩机运行状态正常后，以当前的输出功率的大小更新所述第二输出功率的值。
作为本发明的进一步改进，所述主控板还用于监控所述直线压缩机运行状态，当所述直线压缩机运行状态异常时，在当前的输出功率上增加预定幅值，并将增加后的输出功率设置为第三输出功率，当所述直线压缩机运行状态正常后，将所述第三输出功率与所述环境温度T关联，当环境温度小于或等于T时，以第三输出功率启动所述直线压缩机。
作为本发明的进一步改进，所述主控板还用于判断所述直线压缩机在预定时间内运行时是否意外停止，若是，则认为所述直线压缩机运行状态为异常。
作为本发明的进一步改进，所述主控板还用于控制所述直线压缩机在所述第一输出功率下每次的运行时间比在所述第二输出功率下每次的运行时间长。
本发明的有益效果是：
由以上技术方案可以看出，本发明通过控制直线压缩机的输出功率，以增加直线压缩机内活塞的行程，避免了直线压缩机被变频板保护而导致冰箱无法正常工作。
附图说明
图1为现有技术中直线压缩机的结构示意图。
图2为本发明第一实施方式中冰箱控制方法的流程图。
图3为本发明第一实施方式中冰箱控制系统的模块示意图。
图4为本发明第二实施方式中冰箱控制方法的流程图。
图5为本发明第三实施方式中冰箱控制方法的流程图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面结合附图对本发明的具体实施方式进行详细说明。这些优选实施方式的示例在附图中进行了例示。附图中所示和根据附图描述的本发明的实施方式仅仅是示例性的，并且本发明并不限于这些实施方式。
在此，还需要说明的是，为了避免因不必要的细节而模糊了本发明，在附图中仅仅示出了与本发明的方案密切相关的结构和/或处理步骤，而省略了与本发明关系不大的其他细节。
另外，还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。
参图2所示，介绍本发明第一实施方式中采用直线压缩机的冰箱控制方法，该控制方法包括：
监测冰箱所处的环境温度T；
将环境温度T与预设环境温度阈值T0比较；
若T大于T0，则控制直线压缩机的输出功率为预设的第一输出功率，若T小于或等于T0，则控制直线压缩机的输出功率为预设的第二输出功率，其中，第二输出功率大于第一输出功率。
相应地，参图3所示，本实施方式中还公开了一种采用直线压缩机的冰箱控制系统，其包括温度检测装置100及与温度监测装置相连的主控板200，其中：
温度监测装置100用于监测冰箱所处的环境温度T；
主控板200用于将所述环境温度T与预设环境温度阈值T0比较；
主控板200还用于控制直线压缩机的输出功率，若T大于T0，则控制直线压缩机的输出功率为预设的第一输出功率，若T小于或等于T0，则控制直线压缩机的输出功率为预设的第二输出功率，其中，第二输出功率大于第一输出功率。
优选地，本实施方式中的环境温度T通过温度传感器获取，温度传感器设置于冰箱箱体上，当然除了温度传感器外还可以通过其他的温度检测装置获取，如温度计等。
本发明属于冰箱在低温下的控制方法，而预设环境温度阈值T0是用于定义本发明中“低温”的阈值，如该预设环境温度阈值T0可以设置为10℃，则环境温度T≤10℃的情况均属于低温的范畴，当然10℃仅为本发明一优选的环境温度阈值，在其他实施方式中也可以设置为其他温度值，如5℃、0℃等，在该预设环境温度阈值T0设置为其他温度时，对应的“低温”的定义则不同。
一般冰箱在低温(环境温度小于或等于预设环境温度阈值)工作时，冰箱的热负荷较低，间室需要的制冷量也会相对较低，此时，直线压缩机会以较低的输出功率运行，导致直线压缩机活塞的行程小，活塞有撞击在排气阀板上的风险，造成机械部件破坏。现有的直线压缩机变频板一般会设置变频保护程序，在活塞撞击排气阀板时开启变频保护，从而冰箱停止工作。为避免直线压缩机被变频板保护，冰箱在低温工作时，需强制改变冰箱的运行工况。
本实施方式中，若T大于T0，则控制直线压缩机的输出功率为预设的第一输出功率P1，若T小于或等于T0，则控制所述直线压缩机的输出功率为预设的第二输出功率P2，其中，第二输出功率P2大于第一输出功率P1。
环境温度T低于预设环境温度阈值T0时，冰箱的热负荷较低，间室需要的制冷量也会相对较低，此时，直线压缩机会以较低的输出功率运行，直线压缩机的输出功率与活塞的行程相关，直线压缩机的输出功率越低活塞行程越小。本实施方式中通过增大直线压缩机的输出功率，进而增大直线压缩机中活塞的行程，就避免了活塞与排气阀板之间的撞击，变频板 不会开启变频保护程序，冰箱能够正常运行。
值得一提的是，由于直线压缩机的功率增大，即单位时间内直线压缩机为间室提供的制冷量增大，而在第一输出功率P1和第二输出功率P2条件下间室需要的制冷量相等，因此，直线压缩机提供相同的制冷量时以第二输出功率P2运行的时间小于以第一输出功率P1运行的时间。
如在本发明的一具体实施例中，监测得到的环境温度T为0℃，预设环境温度阈值T0为10℃，则将直线压缩机的输出功率从第一输出功率20W增大到第二输出功率30W，以此增大直线压缩机中活塞的行程。
以下介绍本发明第二实施方式中采用直线压缩机的冰箱控制方法，该控制方法包括：
监测冰箱所处的环境温度T；
将环境温度T与预设环境温度阈值T0比较；
若T大于T0，则控制直线压缩机的输出功率为预设的第一输出功率，若T小于或等于T0，则控制直线压缩机的输出功率为预设的第二输出功率，其中，第二输出功率大于第一输出功率；
上述步骤与第一实施方式相同，进一步地，参图4所示，本实施方式中还包括：
监控直线压缩机运行状态；
当直线压缩机运行状态异常时，在第二输出功率上增加预定幅值；
当直线压缩机运行状态正常后，以当前的输出功率的大小更新第二输出功率的值。
相应地，本实施方式中还公开了一种采用直线压缩机的冰箱控制系统，其包括温度检测装置及与温度监测装置相连的主控板，其中：
温度监测装置用于监测冰箱所处的环境温度T；
主控板用于将所述环境温度T与预设环境温度阈值T0比较；
主控板还用于控制直线压缩机的输出功率，若T大于T0，则控制直线压缩机的输出功率为预设的第一输出功率，若T小于或等于T0，则控制直线压缩机的输出功率为预设的第二输出功率，其中，第二输出功率大于第一输出功率；
主控板还用于监控直线压缩机运行状态，当直线压缩机运行状态异常时，在第二输出功率上增加预定幅值，当直线压缩机运行状态正常后，以当前的输出功率的大小更新第二输出功率的值。
如在本发明的一具体实施例中，监测得到的环境温度T为0℃，预设环境温度阈值T0为10℃，则将直线压缩机的输出功率从第一输出功率20W增大到第二输出功率30W。此后 监控直线压缩机运行状态，若直线压缩机运行异常，在第二输出功率30W的基础上增加预定幅值5W，直线压缩机以35W的输出功率运行，若直线压缩机在35W的输出功率下运行状态正常，则将第二输出功率P2更新为35W。此后，若环境温度低于10℃，压缩机下次运行时直接从第一输出功率20W增大到更新后的第二输出功率35W。
进一步地，在直线压缩机的输出功率增大到35W时，还会继续监控直线压缩机运行状态，若直线压缩机运行状态异常则继续按照预定幅度5W增大输出功率，如增加到50W时直线压缩机正常运行，则将第二输出功率更新为50W。此后，若环境温度低于10℃，压缩机下次运行时直接从第一输出功率20W增大到第二输出功率50W。整个直线压缩机输出功率的控制过程是一个动态循环的过程，且第二输出功率是一个动态更新的值，直线压缩机在低温下启动时无需每次都从30W依次按照预定幅值增大。
以下介绍本发明第三实施方式中采用直线压缩机的冰箱控制方法，该控制方法包括：
监测冰箱所处的环境温度T；
将环境温度T与预设环境温度阈值T0比较；
若T大于T0，则控制直线压缩机的输出功率为预设的第一输出功率，若T小于或等于T0，则控制直线压缩机的输出功率为预设的第二输出功率，其中，第二输出功率大于第一输出功率；
上述步骤与第一实施方式相同，进一步地，参图5所示，本实施方式中还包括：
监控直线压缩机运行状态；
当直线压缩机运行状态异常时，在当前的输出功率上增加预定幅值，并将增加后的输出功率设置为第三输出功率；
当直线压缩机运行状态正常后，将第三输出功率与所述环境温度T关联，当环境温度小于或等于T时，以第三输出功率启动直线压缩机。
相应地，本实施方式中还公开了一种采用直线压缩机的冰箱控制系统，其包括温度检测装置及与温度监测装置相连的主控板，其中：
温度监测装置用于监测冰箱所处的环境温度T；
主控板用于将所述环境温度T与预设环境温度阈值T0比较；
主控板还用于控制直线压缩机的输出功率，若T大于T0，则控制直线压缩机的输出功率为预设的第一输出功率，若T小于或等于T0，则控制直线压缩机的输出功率为预设的第二输出功率，其中，第二输出功率大于第一输出功率；
主控板还用于监控直线压缩机运行状态；当直线压缩机运行状态异常时，在当前的输出 功率上增加预定幅值，并将增加后的输出功率设置为第三输出功率；当直线压缩机运行状态正常后，将第三输出功率与所述环境温度T关联，当环境温度小于或等于T时，以第三输出功率启动直线压缩机。
如在本发明的一具体实施例中，监测得到的环境温度T为0℃，预设环境温度阈值T0为10℃，则将直线压缩机的输出功率从第一输出功率20W增大到第二输出功率30W。此后监控直线压缩机运行状态，若直线压缩机运行异常，在当前的输出功率30W的基础上增加预定幅值5W，直线压缩机以35W的输出功率运行，同时，将当前的输出功率35W设置为第三输出功率P3。
进一步地，在直线压缩机的输出功率增大到35W时，还会继续监控直线压缩机运行状态，若直线压缩机运行状态异常则继续按照预定幅度5W增大当前的输出功率，直至直线压缩机运行状态正常后停止输出功率的增加，并将当前的输出功率设置为第三输出功率P3。如本实施例中直线压缩机的输出功率增加到50W时直线压缩机正常运行，则将当前的输出功率50W更新为第三输出功率，并将此时的环境温度0℃与对应的第三输出功率50W进行关联。
关联后，在直线压缩机下一次运行过程中，若监测到环境温度小于或等于0℃，则以第三输出功率50W启动直线压缩机；若监测到环境温度在0℃～10℃之间，则以第二输出功率30W启动直线压缩机。
本实施例中整个直线压缩机输出功率的控制过程同样是一个动态循环的过程，且第三输出功率是一个动态更新的值，直线压缩机在低温下启动时无需每次都从30W依次按照预定幅值增大。
应当理解的是，本发明各实施例中预设的第一输出功率、第二输出功率为20W和30W，而输出功率增加的预定幅值为5W，在其他实施例中，第一输出功率和第二输出功率的差也可以与预定幅值，直线压缩机在低温运行后从第一输出功率20W按照预定幅值5W逐渐增大，并实时更新第二输出功率。
由以上技术方案可以看出，本发明通过控制直线压缩机的输出功率，以增加直线压缩机内活塞的行程，避免了直线压缩机被变频板保护而导致冰箱无法正常工作。
应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施方式中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。
上文所列出的一系列的详细说明仅仅是针对本申请的可行性实施方式的具体说明，它们并非用以限制本申请的保护范围，凡未脱离本申请技艺精神所作的等效实施方式或变更均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种采用直线压缩机的冰箱控制方法，其特征在于，所述控制方法包括：
    监测冰箱所处的环境温度T；
    将所述环境温度T与预设环境温度阈值T0比较；
    若T大于T0，则控制所述直线压缩机的输出功率为预设的第一输出功率，若T小于或等于T0，则控制所述直线压缩机的输出功率为预设的第二输出功率，其中，所述第二输出功率大于所述第一输出功率。
  2. 如权利要求1所述的采用直线压缩机的冰箱控制方法，其特征在于，所述方法还包括：
    监控所述直线压缩机运行状态；
    当所述直线压缩机运行状态异常时，在所述第二输出功率上增加预定幅值；
    当所述直线压缩机运行状态正常后，以当前的输出功率的大小更新所述第二输出功率的值。
  3. 如权利要求1所述的采用直线压缩机的冰箱控制方法，其特征在于，所述方法还包括：
    监控所述直线压缩机运行状态；
    当所述直线压缩机运行状态异常时，在当前的输出功率上增加预定幅值，并将增加后的输出功率设置为第三输出功率；
    当所述直线压缩机运行状态正常后，将所述第三输出功率与所述环境温度T关联，当环境温度小于或等于T时，以第三输出功率启动所述直线压缩机。
  4. 如权利要求2或3所述的采用直线压缩机的冰箱控制方法，其特征在于，监控所述直线压缩机运行状态具体包括：
    判断所述直线压缩机在预定时间内运行时是否意外停止；
    若是，则认为所述直线压缩机运行状态为异常。
  5. 如权利要求1所述的采用直线压缩机的冰箱控制方法，其特征在于，所述直线压缩机在所述第一输出功率下每次的运行时间比在所述第二输出功率下每次的运行时间长。
  6. 一种采用直线压缩机的冰箱控制系统，其特征在于，所述控制系统包括温度监测装置和与所述温度监测装置相连的主控板，其中，
    所述温度监测装置用于监测冰箱所处的环境温度T；
    所述主控板用于将所述环境温度T与预设环境温度阈值T0比较；
    所述主控板还用于控制直线压缩机的输出功率，若T大于T0，则控制所述直线压缩机 的输出功率为预设的第一输出功率，若T小于或等于T0，则控制所述直线压缩机的输出功率为预设的第二输出功率，其中，所述第二输出功率大于所述第一输出功率。
  7. 如权利要求6所述的采用直线压缩机的冰箱控制系统，其特征在于，所述主控板还用于监控所述直线压缩机运行状态，当所述直线压缩机运行状态异常时，在所述第二输出功率上增加预定幅值，当所述直线压缩机运行状态正常后，以当前的输出功率的大小更新所述第二输出功率的值。
  8. 如权利要求6所述的采用直线压缩机的冰箱控制系统，其特征在于，所述主控板还用于监控所述直线压缩机运行状态，当所述直线压缩机运行状态异常时，在当前的输出功率上增加预定幅值，并将增加后的输出功率设置为第三输出功率，当所述直线压缩机运行状态正常后，将所述第三输出功率与所述环境温度T关联，当环境温度小于或等于T时，以第三输出功率启动所述直线压缩机。
  9. 如权利要求7或8所述的采用直线压缩机的冰箱控制系统，其特征在于，所述主控板还用于判断所述直线压缩机在预定时间内运行时是否意外停止，若是，则认为所述直线压缩机运行状态为异常。
  10. 如权利要求6所述的采用直线压缩机的冰箱控制系统，其特征在于，所述主控板还用于控制所述直线压缩机在所述第一输出功率下每次的运行时间比在所述第二输出功率下每次的运行时间长。
PCT/CN2016/095269 2015-11-05 2016-08-15 采用直线压缩机的冰箱控制方法及控制系统 WO2017076099A1 (zh)

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