CN106895660A - Frequency conversion refrigerator and control system and control method thereof - Google Patents

Frequency conversion refrigerator and control system and control method thereof Download PDF

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Publication number
CN106895660A
CN106895660A CN201710065756.8A CN201710065756A CN106895660A CN 106895660 A CN106895660 A CN 106895660A CN 201710065756 A CN201710065756 A CN 201710065756A CN 106895660 A CN106895660 A CN 106895660A
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CN
China
Prior art keywords
inverter
speed
refrigerator
compressor
frequency
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CN201710065756.8A
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Chinese (zh)
Inventor
孙祥
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安徽美芝制冷设备有限公司
美的集团股份有限公司
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Priority to CN201710065756.8A priority Critical patent/CN106895660A/en
Publication of CN106895660A publication Critical patent/CN106895660A/en

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    • 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 COVERED BY ANY OTHER SUBCLASS
    • F25D29/00Arrangement or mounting of control or safety devices
    • F25D29/003Arrangement or mounting of control or safety devices for movable devices
    • 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 COVERED BY ANY OTHER SUBCLASS
    • F25D2600/00Control issues
    • F25D2600/06Controlling according to a predetermined profile

Abstract

The invention discloses a frequency conversion refrigerator and a control system and control method thereof. The control system comprises a master controller and a frequency conversion controller; the master controller is used for obtaining a refrigeration requirement of the frequency conversion refrigerator and generating a rotating speed signal according to the refrigeration requirement of the frequency conversion refrigerator; the frequency conversion controller is used for receiving the rotating speed signal and generating a rotating speed command according to the rotating speed signal to control the running rotating speed of a frequency conversion compressor; and when the needed rotating speed corresponding to the rotating speed signal is smaller than the lowest running rotating speed of the frequency conversion compressor, the frequency conversion compressor is controlled to run at the lowest running rotating speed, and the frequency conversion compressor is controlled to run with a first displacement. According to the system, when the needed rotating speed of the compressor is smaller than the lowest running rotating speed, the frequency conversion controller is controlled to run at the lowest running rotating speed and with small displacement, and therefore the optimal rotating speed is used when the frequency conversion refrigerator works in the energy-saving mode, and the power dissipation of the refrigerator can be reduced while the refrigeration working condition of the frequency conversion refrigerator and the lubrication reliability of the compressor are guaranteed.

Description

变频冰箱及其控制系统和控制方法 Inverter refrigerator and its control system and control method

技术领域 FIELD

[0001]本发明涉及电器技术领域,特别涉及一种变频冰箱的控制系统、一种变频冰箱和一种变频冰箱的控制方法。 [0001] The present invention relates to the field of electrical technology, and particularly relates to a control system for a refrigerator frequency A frequency control method of a refrigerator and one inverter refrigerator.

背景技术 Background technique

[0002]变频冰箱的变频压缩机最大特征就是压缩机的转速可变,一般范围12〇〇〜4500 转/分钟左右。 [0002] wherein the maximum frequency inverter refrigerator compressor is a variable speed compressor, the general range of about 12〇〇~4500 revolutions / minute. 变频压缩机的转速越低,冰箱的功耗越低,越有利于节能。 The lower the rotation speed of the inverter compressor, the lower power consumption of the refrigerator, the more favorable energy. 变频冰箱在匹配压缩机的运行转速时,需要在保证变频冰箱制冷需求的同时,使变频压缩机工作在较低转速以降低冰箱的功耗。 When frequency refrigerator match the operating speed of the compressor, it is necessary to ensure that inverter refrigerator cooling requirements while the inverter compressor operate at a lower speed to reduce power consumption of the refrigerator.

[0003]但变频压缩机的转速不可能无限小,如果变频压缩机的转速低于一定转速,那么会导致变频压缩机无法泵油润滑并且整机的振动无法抑制。 [0003] However, the rotational speed of the inverter compressor can not be infinitely small, if the rotational speed of the inverter compressor is below a certain speed, it will not cause the inverter compressor lubricating oil pump and machine vibration can not be suppressed.

[0004]相关技术中,当变频冰箱工作在节能模式时,控制变频压缩机在较低转速转动,但该转速低于变频压缩机的最优工作转速,即无法保证变频压缩机在节能模式下使用最优的转速,进而无法保证变频压缩机的润滑可靠性和有效抑制整机的振动。 [0004] In the related art, when the frequency refrigerator operating in the power saving mode, the inverter compressor rotation control at a lower speed, but the speed is lower than the optimum operating speed of the inverter compressor, i.e., the inverter compressor can not be guaranteed in the power-saving mode using the optimal rotational speed, and thus can not guarantee the reliability and effectively suppress vibration lubrication inverter compressor machine.

发明内容 SUMMARY

[0005] 本发明旨在至少在一定程度上解决上述技术中的技术问题之一。 [0005] The present invention aims to address at least some extent one of the above-described technical problems in the art. 为此,本发明的一个目的在于提出一种变频冰箱的控制系统,该系统在压缩机的需求转速小于最低运行转速时,控制变频压缩机以最低运行转速和小排量运行,从而可以使变频冰箱工作在节能模式时变频压缩机工作在最优转速,既可以保证变频冰箱制冷工况,又可以保证变频压缩机润滑可靠性和有效抑制整机的振动,同时还可以降低变频冰箱的功耗。 To this end, an object of the present invention is to provide a control system for a refrigerator of frequency, when the rotational speed of the compressor system demand is less than the minimum operating speed, to control the operation of the inverter compressor small displacement and the minimum operating speed, so that the frequency can be refrigerator operating in a power saving mode inverter compressor work at an optimal speed, both to ensure frequency refrigerator cooling conditions, and can ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, while reducing the power consumption of the inverter refrigerator .

[0006] 本发明的第二个目的在于提出一种变频冰箱。 [0006] A second object of the present invention is to provide a frequency refrigerator.

[0007] 本发明的第三个目的在于提出一种变频冰箱的控制方法。 [0007] A third object of the present invention is to provide a method for controlling the inverter refrigerator.

[0008] 为达到上述目的,本发明第一方面实施例提出了一种变频冰箱的控制系统,所述变频冰箱包括排量可变的变频压缩机,所述控制系统包括主控制器和变频控制器,其中,所述主控制器,用于获取所述变频冰箱的制冷需求,并根据所述变频冰箱的制冷需求生成转速信号,以及将所述转速信号发送给所述变频控制器;所述变频控制器与所述主控制器相连,所述变频控制器用于接收所述转速信号,并根据所述转速信号生成转速指令以对所述变频压缩机的运行转速进行控制,其中,当所述转速信号对应的需求转速小于所述变频压缩机的最低运行转速时,所述变频控制器控制所述变频压缩机以所述最低运行转速运行, 并控制所述变频压缩机以第一排量运行。 [0008] To achieve the above object, a first aspect of the embodiment of the present invention proposes a control system for an inverter refrigerator, said refrigerator comprising a variable frequency inverter compressor displacement, the control system comprises a master controller and the inverter control , wherein the master controller, configured to obtain the frequency of the refrigerator cooling requirements, and generates a speed signal in accordance with the cooling requirements of the inverter refrigerator, and sending the speed signal to the inverter controller; the frequency controller and the main controller is connected to the variable frequency controller for receiving said speed signal, and to control the operation of the rotational speed of the inverter compressor speed signal generates a speed command, wherein, when the when the speed signal corresponding to the demand speed is less than the minimum operating speed of the inverter compressor, the controller controls the inverter frequency to the lowest compressor operating speed operation, and controls the operation of the first inverter compressor displacement .

[0009] 根据本发明实施例的变频冰箱的控制系统,通过主控制器获取变频冰箱的制冷需求,并根据变频冰箱的制冷需求生成转速信号,以及将转速信号发送给变频控制器,变频控制器接收转速信号,并根据转速信号生成转速指令以对变频压缩机的运行转速进行控制, 其中,当转速信号对应的需求转速小于变频压缩机的最低运行转速时,变频控制器控制变频压缩机以最低运行转速运行,并控制变频压缩机以第一排量运行。 [0009] The frequency control system of the refrigerator of the embodiment of the present invention, obtained by the main controller of the inverter refrigerator cooling demand, and generating a signal in accordance with the rotational speed of the inverter refrigerator cooling demand, and transmitting the speed signal to the inverter controller, the inverter controller receiving a speed signal, and to control the operating speed of the inverter compressor speed signal generates a speed command, wherein, when a speed signal corresponding to the needs of the inverter compressor speed is less than the minimum operating speed, the controller controls the inverter compressor frequency with the lowest operating speed operation, and controls the operation of the first inverter compressor displacement. 由此,该系统可以使变频冰箱工作在节能模式时变频压缩机工作在最优转速,既可以保证变频冰箱制冷工况,又可以保证变频压缩机润滑可靠性和有效抑制整机的振动,同时还可以降低变频冰箱的功耗。 Thus, the system may make the frequency refrigerator operating in the power saving mode inverter compressor work at an optimal speed, both to ensure frequency refrigerator cooling conditions, and can ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, while It can also reduce the power consumption of the inverter refrigerator.

[0010] 另外,根据本发明上述实施例的变频冰箱的控制系统还可以具有如下附加的技术特征: [0010] Further, the refrigerator according to the frequency control system of the above-described embodiments of the present invention may also have the following additional technical features:

[0011] 根据本发明的一个实施例,当所述转速信号对应的需求转速大于等于所述变频压缩机的最低运行转速时,所述变频控制器控制所述变频压缩机以所述转速信号对应的需求转速运行,并控制所述变频压缩机以第二排量运行,其中,所述第二排量大于所述第一排量。 When [0011] According to one embodiment of the present invention, when the speed signal corresponding to the demand speed is greater than or equal to the minimum operating speed of the inverter compressor, the inverter controller controls the variable frequency signal corresponding to the rotational speed of the compressor demand speed operation, and controls the operation of the second inverter compressor displacement, wherein the second displacement is greater than the first displacement.

[0012] 根据本发明的一个实施例,当所述转速信号对应的需求转速小于所述变频压缩机的最低运行转速时,所述主控制器控制所述变频冰箱进入节能工况。 [0012] According to one embodiment of the present invention, when the speed signal corresponding to the needs of the inverter compressor speed is less than the minimum operating speed, the main controller controls the variable frequency energy into the refrigerator conditions.

[0013] 根据本发明的一个实施例,所述变频压缩机为往复式压缩机。 [0013] According to one embodiment of the present invention, the inverter compressor is a reciprocating compressor.

[0014] 根据本发明的一个实施例,所述变频压缩机为可变排量压缩机。 [0014] According to one embodiment of the present invention, the inverter compressor is a variable displacement compressor.

[0015] 为达到上述目的,本发明第二方面实施例提出了一种变频冰箱,包括本发明第一方面实施例所述的变频冰箱的控制系统。 [0015] To achieve the above object, a second aspect of the embodiment of the present invention proposes an inverter refrigerator embodiments, the control system comprising frequency refrigerator according to the first aspect of the embodiment of the present invention.

[0016] 本发明实施例的变频冰箱,通过上述的变频冰箱的控制系统的主控制器获取变频冰箱的制冷需求,并根据变频冰箱的制冷需求生成转速信号,以及将转速信号发送给变频控制器,变频控制器接收转速信号,并根据转速信号生成转速指令以对变频压缩机的运行转速进行控制,其中,当转速信号对应的需求转速小于变频压缩机的最低运行转速时,变频控制器控制变频压缩机以最低运行转速运行,并控制变频压缩机以第一排量运行。 [0016] The inverter refrigerator according to an embodiment of the present invention, obtaining inverter refrigerator cooling demand by the main controller of the control system of the above-described inverter refrigerator, and generates speed signals in accordance with frequency refrigerator cooling demand, and transmitting the speed signal to the inverter controller , frequency controller receives the speed signal, and to control the operating speed of the inverter compressor speed signal generates a speed command, wherein, when a speed signal corresponding to the needs of the inverter compressor speed is less than the minimum operating speed, the controller controls the inverter frequency The compressor runs with the lowest operating speed, and control the operation of the first inverter compressor displacement. 由此,该变频冰箱工作在节能模式时可以使变频压缩机工作在最优转速,既可以保证变频冰箱制冷工况,又可以保证变频压缩机润滑可靠性和有效抑制整机的振动,同时还可以降低变频冰箱的功耗。 Accordingly, the frequency refrigerator operating in the power saving mode of the inverter compressor can work at an optimal speed, both to ensure frequency refrigerator cooling conditions, and can ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, and also you can reduce the power consumption of the inverter refrigerator.

[0017] 为达到上述目的,本发明第三方面实施例提出了一种变频冰箱的控制方法,所述变频冰箱包括排量可变的变频压缩机、主控制器和变频控制器,所述控制方法包括以下步骤:所述主控制器获取所述变频冰箱的制冷需求,并根据所述变频冰箱的制冷需求生成转速信号,以及将所述转速信号发送给所述变频控制器;所述变频控制器接收所述转速信号, 并根据所述转速信号生成转速指令以对所述变频压缩机的运行转速进行控制,其中,当所述转速信号对应的需求转速小于所述变频压缩机的最低运行转速时,所述变频控制器控制所述变频压缩机以所述最低运行转速运行,并控制所述变频压缩机以第一排量运行。 [0017] To achieve the above object, a third aspect of the embodiment of the present invention proposes a control method of the inverter refrigerator, said refrigerator comprising a variable frequency inverter compressor displacement, the master controller and the inverter controller, the control the method comprises the steps of: obtaining a master controller of the inverter refrigerator cooling requirements, and generates speed signals in accordance with the cooling requirements of the inverter refrigerator, and sending the speed signal to the inverter controller; the inverter control receives the speed signal, and to control the operation of the rotational speed of the inverter compressor speed signal generates a speed command, wherein, when said speed signal corresponding to the needs of the inverter compressor speed is less than the minimum operating speed when, the variable frequency controller controls the operation of the inverter compressor to the lowest rotational speed, and controls the operation of the first inverter compressor displacement.

[0018] 根据本发明实施例的变频冰箱的控制方法,首先,通过主控制器获取变频冰箱的制冷需求,并根据变频冰箱的制冷需求生成转速信号,以及将转速信号发送给变频控制器, 然后,通过变频控制器接收转速信号,并根据转速信号生成转速指令以对变频压缩机的运行转速进行控制,其中,当转速信号对应的需求转速小于变频压缩机的最低运行转速时,变频控制器控制变频压缩机以最低运行转速运行,并控制变频压缩机以第一排量运行。 [0018] The inverter control method of a refrigerator of the embodiment of the present invention, firstly, acquires frequency refrigerator cooling demand by the main controller, and generating a speed signal in accordance with the cooling requirements of inverter refrigerator, and transmitting the speed signal to the inverter controller, and received speed signal by the inverter controller, and to control the operating speed of the inverter compressor speed signal generates a speed command, wherein, when a speed signal corresponding to the needs of the inverter compressor speed is less than the minimum operating speed, the controller controls the inverter at the lowest operating speed of the inverter compressor operation, and controls the operation of the first inverter compressor displacement. 由此, 该方法可以使变频冰箱工作在节能模式时变频压缩机工作在最优转速,既可以保证变频冰箱制冷工况,又可以保证变频压缩机润滑可靠性和有效抑制整机的振动,同时还可以降低变频冰箱的功耗。 Thus, the method allows inverter refrigerator operating in the power saving mode inverter compressor work at an optimal speed, both to ensure frequency refrigerator cooling conditions, and can ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, while It can also reduce the power consumption of the inverter refrigerator.

[0019] 另外,根据本发明上述实施例的变频冰箱的控制方法还可以具有如下附加的技术特征: [0019] Further, inverter control method of the refrigerator according to the embodiment of the present invention may also have the following additional technical features:

[0020] 根据本发明的一个实施例,当所述转速信号对应的需求转速大于等于所述变频压缩机的最低运行转速时,所述变频控制器控制所述变频压缩机以所述转速信号对应的需求转速运行,并控制所述变频压缩机以第二排量运行,其中,所述第二排量大于所述第一排量。 When [0020] According to one embodiment of the present invention, when the speed signal corresponding to the demand speed is greater than or equal to the minimum operating speed of the inverter compressor, the inverter controller controls the variable frequency signal corresponding to the rotational speed of the compressor demand speed operation, and controls the operation of the second inverter compressor displacement, wherein the second displacement is greater than the first displacement.

[0021] 根据本发明的一个实施例,当所述转速信号对应的需求转速小于所述变频压缩机的最低运行转速时,所述主控制器控制所述变频冰箱进入节能工况。 [0021] According to one embodiment of the present invention, when the speed signal corresponding to the needs of the inverter compressor speed is less than the minimum operating speed, the main controller controls the variable frequency energy into the refrigerator conditions.

附图说明 BRIEF DESCRIPTION

[0022] 本发明上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解,其中, The above-described invention and / or additional aspects and advantages of the drawings from the following description of embodiments will become apparent and more readily appreciated [0022] present, wherein,

[0023] 图1是根据本发明一个实施例的变频冰箱的控制系统的方框示意图; [0023] FIG. 1 is a block schematic diagram of a control system according to one embodiment of the frequency refrigerator of the present invention;

[0024]图2是根据本发明一个实施例的变频冰箱的控制系统的工作原理示意图;以及[0025]图3是根据本发明一个实施例的变频冰箱的控制方法的流程图。 [0024] FIG. 2 is a schematic view of the operating principle of the frequency control system of the refrigerator according to one embodiment of the present invention; and [0025] FIG. 3 is a flowchart of a control method for inverter refrigerator according to one embodiment of the present invention.

具体实施方式 Detailed ways

[0026]下面详细描述本发明的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。 [0026] Example embodiments of the present invention is described in detail below, exemplary embodiments of the embodiment shown in the accompanying drawings, wherein same or similar reference numerals designate the same or similar elements or elements having the same or similar functions. 下面通过参考附图描述的实施例是示例性的,旨在用于解释本发明,而不能理解为对本发明的限制。 By following with reference to the embodiments described are exemplary, and are intended for explaining the present invention and should not be construed as limiting the present invention.

[0027]下面参考附图来描述本发明实施例提出的变频冰箱及其控制系统和控制方法。 [0027] Examples set forth below with reference to the embodiment and the inverter refrigerator control system and control method of the present invention is described in the accompanying drawings. [0028]图1是根据本发明一个实施例的变频冰箱的控制系统的方框示意图。 [0028] FIG. 1 is a block schematic diagram of a control system according to one embodiment of the frequency refrigerator of the present invention. 其中,所述变频冰箱包括排量可变的变频压缩机1〇〇,控制系统包括主控制器10和变频控制器20。 Wherein the refrigerator includes a variable frequency inverter compressor displacement 1〇〇, the control system includes a master controller 10 and frequency controller 20.

[0029] 主控制器10用于获取变频冰箱的制冷需求,并根据变频冰箱的制冷需求生成转速信号,以及将转速信号发送给变频控制器20。 [0029] The main controller 10 is configured to obtain frequency refrigerator cooling demand, and generating a speed signal in accordance with the cooling requirements of inverter refrigerator, and transmitting the speed signal to the inverter controller 20. 变频控制器20与主控制器10相连,变频控制器20用于接收转速信号,并根据转速信号生成转速指令以对变频压缩机100的运行转速进行控制,其中,当转速信号对应的需求转速n小于变频压缩机100的最低运行转速nl时,变频控制器20控制变频压缩机100以最低运行转速nl运行,并控制变频压缩机100以第一排量运行。 Frequency controller 20 is connected to the main controller 10, frequency controller 20 for receiving a rotational speed signal, and to control the operating speed of the inverter compressor 100 generates a speed command signal according to the rotational speed, wherein, when a speed signal corresponding to the demand speed n nl is less than the minimum operating speed of the inverter compressor 100, the controller 20 controls the frequency of the inverter compressor 100 to run at the lowest operating speed nl, the inverter compressor 100 and controls the operation of the first displacement.

[0030] 具体地,如图2所示,在变频冰箱运行时,主控制器10获取变频冰箱的制冷需求,例如,主控制器10可以根据变频冰箱制冷腔室内的温度获取变频冰箱的制冷需求,然后主控制器10根据变频冰箱的制冷需求判断变频压缩机100的需求转速n并生成转速信号并发送至变频控制器20。 [0030] Specifically, as shown in FIG frequency operation of the refrigerator, the main controller 10 obtains the cooling demand of inverter refrigerator 2, e.g., the main controller 10 can acquire cooling demand frequency inverter refrigerator according to the temperature of the refrigerator cooling chamber , the main controller 10 then determines the rotational speed of the inverter compressor 100 needs to generate n and the speed frequency signal and transmits to the controller 20 in accordance with the cooling requirements of inverter refrigerator. 然后,变频控制器20根据转速信号对应的需求转速n生成转速指令,以控制变频压缩机100的运行转速和运行排量,其中,如果转速信号对应的需求转速n小于变频压缩机100的最低运行转速nl,为保证变频压缩机100的润滑可靠性和有效抑制整机的振动,变频控制器20控制变频压缩机100以最低运行转速nl运行,同时,为达到降低变频冰箱的能耗,变频控制器20控制变频压缩机100以第一排量运行即小排量运行。 Then, the controller 20 is n frequency generated speed command signal according to the demand speed corresponding to the rotational speed, to control the operating speed and displacement operation of the compressor inverter 100, wherein, if the speed signal corresponding to the rotational speed n is less than the minimum operating requirements of the inverter compressor 100 NL speed, in order to ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, 20 100 nl lowest operating frequency controller controls the operating speed of the inverter compressor, at the same time, to reduce energy consumption of the inverter refrigerator, frequency control 100 20 controls the inverter compressor 100 operates in a first displacement that is small displacement operation. 需要说明的是, 最低运行转速nl为变频压缩机1〇〇设计的最低转速。 It should be noted that the minimum speed for the lowest run nl speed inverter compressor 1〇〇 design. 由此,该系统既可以保证变频冰箱制冷工况,又可以保证变频压缩机润滑可靠性和有效抑制整机的振动,同时还可以降低变频冰箱的功耗。 Thus, the system can not only ensure frequency refrigerator cooling conditions, and can ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, while reducing the power consumption of the inverter refrigerator.

[0031]根据本发明的一个实施例,如图2所示,当转速信号对应的需求转速n大于等于变频压缩机100的最低运行转速nl时,变频控制器20控制变频压缩机100以转速信号对应的需求转速n运行,并控制变频压缩机100以第二排量运行(即大排量运行),以保证变频冰箱的制冷效果。 When [0031] According to one embodiment of the present invention, shown in Figure 2, when a speed signal corresponding to the rotational speed n is greater than demand for the lowest frequency equal to the operating speed of the compressor 100 nl, the controller 20 controls the inverter 100 to the inverter compressor speed signal n corresponding to the demand speed operation, the inverter compressor 100 and controls the operation of the second displacement (i.e., large displacement operation) to ensure that the cooling effect of the inverter refrigerator. 其中,第二排量大于第一排量。 Wherein the second displacement is greater than the first displacement.

[0032] 根据本发明的一个实施例,当转速信号对应的需求转速n小于变频压缩机100的最低运行转速nl时,主控制器10控制变频冰箱进入节能工况。 [0032] According to one embodiment of the present invention, when a speed signal corresponding to the rotational speed n is less than the demand of the inverter compressor 100 at the lowest running speed NL, the main controller 10 controls the refrigerator into the energy conversion conditions.

[0033] 也就是说,如果n<nl,则主控制器10控制变频冰箱工作在节能模式。 [0033] That is, if n <nl, the main controller 10 controls the inverter refrigerator energy-saving operation mode. 在变频冰箱工作在节能模式时,为保证变频压缩机100的润滑可靠性和有效抑制整机的振动,变频控制器20控制变频压缩机100以最低运行转速nl运行,同时,为达到降低变频冰箱的能耗,变频控制器20控制变频压缩机100以第一排量运行即小排量运行。 In the frequency refrigerator operating in the power saving mode, the inverter compressor 100 in order to ensure reliable and efficient lubrication suppressing vibration of the machine, 20 100 nl lowest operating frequency controller controls the operating speed of the inverter compressor, at the same time, to reduce frequency of the refrigerator energy, the controller 20 controls the frequency of the inverter compressor 100 that is operating in a first displacement of small displacement operation.

[0034] 需要说明的是,在本发明实施例中,变频压缩机100为往复式压缩机,且变频压缩机100为可变排量压缩机。 [0034] Incidentally, in the embodiment of the present invention, the inverter compressor 100 is a reciprocating compressor and the inverter compressor 100 is a variable displacement compressor.

[0035] 综上所述,根据本发明实施例的变频冰箱的控制系统,通过主控制器获取变频冰箱的制冷需求,并根据变频冰箱的制冷需求生成转速信号,以及将转速信号发送给变频控制器,变频控制器接收转速信号,并根据转速信号生成转速指令以对变频压缩机的运行转速进行控制,其中,当转速信号对应的需求转速小于变频压缩机的最低运行转速时,变频控制器控制变频压缩机以最低运行转速运行,并控制变频压缩机以第一排量运行。 [0035] As described above, the control system according to an embodiment of the inverter refrigerator of the present invention, obtained by the main controller of the inverter refrigerator cooling demand, and generating a signal in accordance with the rotational speed of the inverter refrigerator cooling demand, and transmitting the speed control signal to the inverter , frequency controller receives the speed signal, and to control the operating speed of the inverter compressor speed signal generates a speed command, wherein, when a speed signal corresponding to the needs of the inverter compressor speed is less than the minimum operating speed, the controller controls the inverter at the lowest operating speed of the inverter compressor operation, and controls the operation of the first inverter compressor displacement. 由此,该系统可以使变频冰箱工作在节能模式时变频压缩机工作在最优转速,既可以保证变频冰箱制冷工况,又可以保证变频压缩机润滑可靠性和有效抑制整机的振动,同时还可以降低变频冰箱的功耗。 Thus, the system may make the frequency refrigerator operating in the power saving mode inverter compressor work at an optimal speed, both to ensure frequency refrigerator cooling conditions, and can ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, while It can also reduce the power consumption of the inverter refrigerator.

[0036] 本发明实施例还提出一种变频冰箱,其包括上述的变频冰箱的控制系统。 Example [0036] The present invention further provides an inverter refrigerator, comprising a control system according to the frequency of the refrigerator.

[0037] 本发明实施例的变频冰箱,通过上述的变频冰箱的控制系统的主控制器获取变频冰箱的制冷需求,并根据变频冰箱的制冷需求生成转速信号,以及将转速信号发送给变频控制器,变频控制器接收转速信号,并根据转速信号生成转速指令以对变频压缩机的运行转速进行控制,其中,当转速信号对应的需求转速小于变频压缩机的最低运行转速时,变频控制器控制变频压缩机以最低运行转速运行,并控制变频压缩机以第一排量运行。 [0037] The inverter refrigerator according to an embodiment of the present invention, obtaining inverter refrigerator cooling demand by the main controller of the control system of the above-described inverter refrigerator, and generates speed signals in accordance with frequency refrigerator cooling demand, and transmitting the speed signal to the inverter controller , frequency controller receives the speed signal, and to control the operating speed of the inverter compressor speed signal generates a speed command, wherein, when a speed signal corresponding to the needs of the inverter compressor speed is less than the minimum operating speed, the controller controls the inverter frequency The compressor runs with the lowest operating speed, and control the operation of the first inverter compressor displacement. 由此,该变频冰箱工作在节能模式时可以使变频压缩机工作在最优转速,既可以保证变频冰箱制冷工况,又可以保证变频压缩机润滑可靠性和有效抑制整机的振动,同时还可以降低变频冰箱的功耗。 Accordingly, the frequency refrigerator operating in the power saving mode of the inverter compressor can work at an optimal speed, both to ensure frequency refrigerator cooling conditions, and can ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, and also you can reduce the power consumption of the inverter refrigerator.

[0038] 图3是根据本发明一个实施例的变频冰箱的控制方法的流程图。 [0038] FIG. 3 is a flowchart of a control method for inverter refrigerator according to one embodiment of the present invention. 其中,变频冰箱包括排量可变的变频压缩机、主控制器和变频控制器,如图3所示,变频冰箱的控制方法包括以下步骤: Wherein the refrigerator includes a variable frequency inverter compressor displacement, the master controller and the inverter controller, shown in Figure 3, inverter control method of the refrigerator comprises steps of:

[0039] S1,主控制器获取变频冰箱的制冷需求,并根据变频冰箱的制冷需求生成转速信号,以及将转速信号发送给变频控制器。 [0039] S1, the main controller acquires inverter refrigerator refrigeration requirement, and generates a signal according to the rotational speed of the inverter refrigerator cooling demand, and transmitting the speed signal to the inverter controller.

[0040] S2,变频控制器接收转速信号,并根据转速信号生成转速指令以对变频压缩机的运行转速进行控制,其中,当转速信号对应的需求转速n小于变频压缩机的最低运行转速nl 时,变频控制器控制变频压缩机以最低运行转速nl运行,并控制变频压缩机以第一排量运行。 [0040] S2, the controller receives the speed frequency signal, and to control the operating speed of the inverter compressor speed signal generates a speed command, wherein, when a speed signal corresponding to the needs of the inverter compressor rotational speed n is less than the minimum operating speed nl , the controller controls the inverter compressor operating frequency at minimum operating speed NL, and controls the operation of the first inverter compressor displacement.

[0041] 具体地,在变频冰箱运行时,主控制器获取变频冰箱的制冷需求,例如,主控制器可以根据变频冰箱制冷腔室内的温度获取变频冰箱的制冷需求,然后主控制器根据变频冰箱的制冷需求判断变频压缩机的需求转速n并生成转速信号并发送至变频控制器。 [0041] Specifically, in inverter operation of the refrigerator, the main controller acquires inverter refrigerator cooling demand, e.g., the main controller may obtain the cooling demand frequency inverter refrigerator according to the temperature of the refrigerator cooling chamber, then the main controller according to the frequency refrigerator Analyzing refrigeration demand requirements of the inverter compressor rotational speed n and generating a speed signal and sent to the frequency controller. 然后,变频控制器根据转速信号对应的需求转速n控制变频压缩机的运行转速和运行排量,其中,如果转速信号对应的需求转速n小于变频压缩机的最低运行转速nl,为保证变频压缩机的润滑可靠性和有效抑制整机的振动,变频控制器控制变频压缩机以最低运行转速nl运行,同时,为达到降低变频冰箱的能耗,变频控制器控制变频压缩机以第一排量运行即小排量运行。 Then, n frequency controller controls the inverter compressor operating speed and operating according to the displacement speed signal corresponding to the speed requirements, wherein, if the speed signal corresponding to the needs of the inverter compressor rotational speed n is less than the minimum operating speed NL, the inverter compressor to ensure lubrication reliability and effectively suppress vibration of the machine, the controller controls the inverter compressor frequency operating at the lowest operating speed nl, while the frequency is to reduce energy consumption of the refrigerator, the controller controls the inverter compressor frequency operating in a first displacement That small displacement operation. 需要说明的是,最低运行转速nl为变频压缩机设计的最低转速。 It should be noted that the minimum operating speed nl lowest speed inverter compressor design. 由此,该方法既可以保证变频冰箱制冷工况,又可以保证变频压缩机润滑可靠性和有效抑制整机的振动,同时还可以降低变频冰箱的功耗。 Thus, this method can not only ensure frequency refrigerator cooling conditions, and can ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, while reducing the power consumption of the inverter refrigerator.

[0042] 根据本发明的一个实施例,当转速信号对应的需求转速n大于等于变频压缩机的最低运行转速nl时,变频控制器控制变频压缩机以转速信号对应的需求转速n运行,并控制变频压缩机以第二排量运行(即大排量运行),以保证变频冰箱的制冷效果。 [0042] According to the present embodiment when an embodiment of the invention, when the rotation speed signal corresponding to the rotational speed n than the minimum needs of the operating speed of the inverter compressor nl, the controller controls the inverter to the inverter compressor speed signal corresponding to the speed demand operation n, and the control in a second run the inverter compressor displacement (i.e., large displacement operation) to ensure that the cooling effect of the inverter refrigerator. 其中,第二排量大于第一排量。 Wherein the second displacement is greater than the first displacement.

[0043] 根据本发明的一个实施例,当转速信号对应的需求转速n小于变频压缩机的最低运行转速nl时,主控制器控制变频冰箱进入节能工况。 [0043] According to one embodiment of the present invention, when the rotational speed signal corresponding to the needs of the inverter compressor rotational speed n is less than the minimum operating speed NL, the main controller controls the inverter refrigerator into the energy conservation condition.

[0044] 也就是说,如果n<nl,则主控制器控制变频冰箱工作在节能模式。 [0044] That is, if n <nl, the main controller controls the inverter refrigerator energy-saving operation mode. 在变频冰箱工作在节能模式时,为保证变频压缩机的润滑可靠性和有效抑制整机的振动,变频控制器控制变频压缩机以最低运行转速nl运行,同时,为达到降低变频冰箱的能耗,变频控制器控制变频压缩机以第一排量运行即小排量运行。 In the frequency refrigerator operating in the power saving mode, in order to ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, the controller controls the frequency of the inverter compressor nl running at minimum operating speed, the same time, to reduce energy consumption of the inverter refrigerator , the controller controls the inverter compressor frequency operating in a first displacement that is small displacement operation.

[0045] 需要说明的是,在本发明实施例中,变频压缩机为往复式压缩机,且变频压缩机为可变排量压缩机。 [0045] Incidentally, in the embodiment of the present invention, the inverter compressor is a reciprocating compressor and the inverter compressor is a variable displacement compressor.

[0046] 根据本发明实施例的变频冰箱的控制方法,首先,通过主控制器获取变频冰箱的制冷需求,并根据变频冰箱的制冷需求生成转速信号,以及将转速信号发送给变频控制器, 然后,通过变频控制器接收转速信号,并根据转速信号生成转速指令以对变频压缩机的运行转速进行控制,其中,当转速信号对应的需求转速小于变频压缩机的最低运行转速时,变频控制器控制变频压缩机以最低运行转速运行,并控制变频压缩机以第一排量运行。 [0046] The inverter control method of a refrigerator of the embodiment of the present invention, firstly, acquires frequency refrigerator cooling demand by the main controller, and generating a speed signal in accordance with the cooling requirements of inverter refrigerator, and transmitting the speed signal to the inverter controller, and received speed signal by the inverter controller, and to control the operating speed of the inverter compressor speed signal generates a speed command, wherein, when a speed signal corresponding to the needs of the inverter compressor speed is less than the minimum operating speed, the controller controls the inverter at the lowest operating speed of the inverter compressor operation, and controls the operation of the first inverter compressor displacement. 由此, 该方法可以使变频冰箱工作在节能模式时变频压缩机工作在最优转速,既可以保证变频冰箱制冷工况,又可以保证变频压缩机润滑可靠性和有效抑制整机的振动,同时还可以降低变频冰箱的功耗。 Thus, the method allows inverter refrigerator operating in the power saving mode inverter compressor work at an optimal speed, both to ensure frequency refrigerator cooling conditions, and can ensure the reliability of the inverter compressor lubrication and effectively suppress vibration of the machine, while It can also reduce the power consumption of the inverter refrigerator.

[0047] 在本发明的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“长度”、“宽度”、 “厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底” “内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。 [0047] In the description of the present invention, it is to be understood that the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front "," rear "," left "," right "," vertical "," horizontal "," top "," bottom "," inner "," outer "," clockwise "," counterclockwise "," axis to "," radial "," circumferential "and indicates the position or location or orientation relationship positional relationship shown in the accompanying drawings, for convenience of description only and the present invention is to simplify the description, not indicate or imply referred devices or elements must have a specific orientation, the orientation of a particular configuration and operation, can not be construed as limiting the present invention.

[0048] 此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指不或暗不相对重要性或者隐含指明所指示的技术特征的数量。 [0048] In addition, the terms "first", "second" are used for descriptive purposes only, not to be construed as meaning not dark or not the relative importance of the number of technical features specified or implicitly indicated. 由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。 Thus, there is defined "first", "second" features may be explicitly or implicitly include at least one of the feature. 在本发明的描述中,“多个”的含义是至少两个,例如两个,三个等,除非另有明确具体的限定。 In the description of the present invention, the meaning of the "plurality" is at least two, e.g. two, three, etc., unless explicitly specifically limited.

[0049] 在本发明中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。 [0049] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed" and like terms are to be broadly understood, for example, may be a fixed connection, may be detachable connection, or integrally; may be a mechanical connector may be electrically connected; may be directly connected, can also be connected indirectly through intervening structures, it may be interaction between the two internal communicating elements or two elements, unless otherwise expressly limited. 对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。 Those of ordinary skill in the art, to be understood that the specific meanings in the present invention depending on the circumstances.

[0050]在本发明中,除非另有明确的规定和限定,第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触,或第一和第二特征通过中间媒介间接接触。 [0050] In the present invention, unless otherwise expressly specified or limited, the first feature in the "on" a second or "lower" may be in direct contact with the first and second characteristic or the first and second characteristics by intermediary indirect contact. 而且,第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方,或仅仅表示第一特征水平高度高于第二特征。 Also, the first feature a second feature in the "on", "above" and "upper" But first feature a second feature directly above or obliquely upward or simply represents a first characteristic level is higher than the height of the second feature. 第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方,或仅仅表示第一特征水平高度小于第二特征。 In the first feature a second feature "beneath", "below" and "lower" may be just below the first feature or the second feature obliquely downward, or just less than the level represented by the first feature a second feature.

[0051] 在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。 [0051] In the description of the present specification, reference to the term "one embodiment," "some embodiments", "an example", "a specific example", or "some examples" means that a description of the exemplary embodiment or embodiments described a particular feature, structure, material, or characteristic is included in at least one embodiment of the present invention, embodiments or examples. 在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。 In the present specification, a schematic representation of the above terms must not be the same for the embodiment or exemplary embodiments. 而且,描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。 Furthermore, the particular features, structures, materials, or characteristics described may be in any one or more embodiments or examples combined in suitable manner. 此外,在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。 Furthermore, different embodiments or examples and embodiments or features of different exemplary embodiments without conflicting, those skilled in the art described in this specification can be combined and the combination thereof.

[0052]尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。 [0052] Although the above has been illustrated and described embodiments of the present invention, it is understood that the above embodiments are exemplary and are not to be construed as limiting the present invention, within the scope of the invention to those of ordinary skill in the art It may be variations of the above embodiments, modifications, alternatives, and modifications.

Claims (8)

1.一种变频冰箱的控制系统,其特征在于,所述变频冰箱包括排量可变的变频压缩机, 所述控制系统包括主控制器和变频控制器,其中, 所述主控制器,用于获取所述变频冰箱的制冷需求,并根据所述变频冰箱的制冷需求生成转速信号,以及将所述转速信号发送给所述变频控制器; 所述变频控制器与所述主控制器相连,所述变频控制器用于接收所述转速信号,并根据所述转速信号生成转速指令以对所述变频压缩机的运行转速进行控制,其中,当所述转速信号对应的需求转速小于所述变频压缩机的最低运行转速时,所述变频控制器控制所述变频压缩机以所述最低运行转速运行,并控制所述变频压缩机以第一排量运行。 An inverter refrigerator control system, characterized in that the refrigerator comprises a variable frequency inverter compressor displacement, the control system comprises a master controller and the inverter controller, wherein the master controller, with to obtain the variable frequency refrigerator cooling requirements, and generates a speed signal in accordance with the cooling requirements of the inverter refrigerator, and sending the speed signal to the inverter controller; coupled to the variable frequency controller and the main controller, the frequency controller for receiving said speed signal, and to control the operation speed of the inverter compressor is generated according to the rotational speed of said rotational speed command signal, wherein, when said speed signal corresponding to the frequency compression speed is less than demand when the minimum operating speed of the machine, the controller controls the inverter frequency to the lowest compressor operating speed operation, and controls the operation of the first inverter compressor displacement.
2. 如权利要求1所述的变频冰箱的控制系统,其特征在于,当所述转速信号对应的需求转速大于等于所述变频压缩机的最低运行转速时,所述变频控制器控制所述变频压缩机以所述转速信号对应的需求转速运行,并控制所述变频压缩机以第二排量运行,其中,所述第二排量大于所述第一排量。 2. The frequency control system of the refrigerator according to claim 1, wherein, when a speed signal corresponding to the demand speed is greater than or equal to the minimum operating speed of the inverter compressor, the controller controls the variable frequency inverter the compressor rotational speed signal corresponding to the speed demand, and controls the operation of the second inverter compressor displacement, wherein the second displacement is greater than the first displacement.
3. 如权利要求1所述的变频冰箱的控制系统,其特征在于,当所述转速信号对应的需求转速小于所述变频压缩机的最低运行转速时,所述主控制器控制所述变频冰箱进入节能工况。 3. The frequency control system of the refrigerator according to claim 1, wherein, when the demand speed corresponding to the speed signal less than the minimum operating speed of the inverter compressor when the main controller controls the variable frequency refrigerator enter the energy-saving conditions.
4. 如权利要求1-3中任一项所述的变频冰箱的控制系统,其特征在于,所述变频压缩机为往复式压缩机。 4. The inverter refrigerator control system as claimed in any one of claims 1-3, characterized in that, the inverter compressor is a reciprocating compressor.
5. —种变频冰箱,其特征在于,包括如权利要求1-4中任一项所述的变频冰箱的控制系统。 5. - species inverter refrigerator, wherein the control system comprises a frequency refrigerator according to any one of 1 to 4 claim.
6.—种变频冰箱的控制方法,其特征在于,所述变频冰箱包括排量可变的变频压缩机、 主控制器和变频控制器,所述控制方法包括以下步骤: 所述主控制器获取所述变频冰箱的制冷需求,并根据所述变频冰箱的制冷需求生成转速信号,以及将所述转速信号发送给所述变频控制器; 所述变频控制器接收所述转速信号,并根据所述转速信号生成转速指令以对所述变频压缩机的运行转速进行控制,其中,当所述转速信号对应的需求转速小于所述变频压缩机的最低运行转速时,所述变频控制器控制所述变频压缩机以所述最低运行转速运行,并控制所述变频压缩机以第一排量运行。 6.- frequency control methods of the refrigerator, wherein the refrigerator comprises a variable frequency inverter compressor displacement, the master controller and the inverter controller, the control method comprising the steps of: said main controller acquires the inverter refrigerator cooling demand and cooling demand is generated from the inverter refrigerator speed signal, and transmitting the speed signal to the inverter controller; the variable frequency controller receives the speed signal, and in accordance with the the rotational speed of the rotational speed signal generating instructions to control the operation speed of the inverter compressor, wherein, when said speed signal corresponding to the demand speed is lower than the minimum operating speed of the inverter compressor, the controller controls the variable frequency inverter the minimum operating speed compressor operation, and controls the operation of the first inverter compressor displacement.
7.如权利要求6所述的变频冰箱的控制方法,其特征在于,当所述转速信号对应的需求转速大于等于所述变频压缩机的最低运行转速时,所述变频控制器控制所述变频压缩机以所述转速信号对应的需求转速运行,并控制所述变频压缩机以第二排量运行,其中,所述第二排量大于所述第一排量。 7. The control method according to claim 6 frequency refrigerator, wherein, when the speed signal corresponding to the demand speed is greater than or equal to the minimum operating speed of the inverter compressor, the controller controls the variable frequency inverter the compressor rotational speed signal corresponding to the speed demand, and controls the operation of the second inverter compressor displacement, wherein the second displacement is greater than the first displacement.
8.如权利要求6所述的变频冰箱的控制方法,其特征在于,当所述转速信号对应的需求转速小于所述变频压缩机的最低运行转速时,所述主控制器控制所述变频冰箱进入节能工况。 The control method according to claim 6 frequency refrigerator, wherein, when the demand speed corresponding to the speed signal less than the minimum operating speed of the inverter compressor when the main controller controls the variable frequency refrigerator enter the energy-saving conditions.
CN201710065756.8A 2017-02-06 2017-02-06 Frequency conversion refrigerator and control system and control method thereof CN106895660A (en)

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