Apparatus and method for controlling a linear compressor and a linear compressor and a refrigerator having the same

A technology of linear compressors and control devices, which is applied to parts of pumping devices for elastic fluids, electromechanical devices, and mechanical energy control, and can solve the problems of increasing losses between cylinders and pistons, reducing efficiency, and reducing maximum refrigeration capacity. minor issues

Active Publication Date: 2016-06-08
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] However, the initial value of the piston is an element that determines the maximum cooling capacity. If the initial value is reduced, the friction area per unit time between the cylinder and the piston decreases when the operating frequency is the same, thereby reducing the loss caused by friction and improving efficiency. But at the same time, it is not easy to cope with overload due to the reduced maximum cool

Method used

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  • Apparatus and method for controlling a linear compressor and a linear compressor and a refrigerator having the same
  • Apparatus and method for controlling a linear compressor and a linear compressor and a refrigerator having the same
  • Apparatus and method for controlling a linear compressor and a linear compressor and a refrigerator having the same

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no. 1 example

[0119] image 3 It is a configuration diagram of a linear compressor control device according to an embodiment of the present invention.

[0120] like image 3 As shown, the linear compressor control device 100 according to an embodiment of the present invention includes: a driving part 110, which drives the linear compressor 200 based on a control signal, and a detection part 120, which detects the motor current corresponding to the motor of the linear compressor 200 and / or the motor voltage, the asymmetric current generating unit 130 generates an asymmetric motor current by using a current offset in the detected motor current, and the control unit 140 generates an asymmetric motor current based on the asymmetric motor current and / or The sensed motor voltage generates the control signal; wherein the current offset is variable based on a change in piston position.

[0121] image 3 The structural elements of the linear compressor control shown are not mandatory, and a linea...

no. 2 example

[0241] This embodiment can be realized by a part or combination of the structures or steps included in the foregoing or subsequent embodiments. In order to clarify the description of this embodiment, repeated parts can be replaced by it and the detailed description is omitted.

[0242] The control device of the linear compressor in this embodiment may include: a driving part 110, which drives the linear compressor based on a control signal, a detection part 120, which detects the motor current and / or motor voltage of the linear compressor, and an asymmetric current generating part 130. Generate an asymmetric motor current by utilizing a current offset in the detected motor current, and the control unit 140 generates the asymmetric motor current based on the asymmetric motor current and / or the detected motor voltage. A control signal; wherein the current offset is variable based on a change in piston position.

[0243]According to an embodiment of the present invention, the cur...

no. 3 example

[0288] This embodiment can be realized by a part or combination of the structures or steps included in the foregoing or subsequent embodiments. In order to clarify the description of this embodiment, repeated parts can be replaced by it and the detailed description is omitted.

[0289] According to this embodiment, the current offset used by the asymmetrical current generator 130 in the motor current can be changed according to the operation mode of the linear compressor.

[0290] In this case, the operation mode may be at least one of a symmetrical control mode, an asymmetrical control mode, and a reverse asymmetrical control mode.

[0291] As an example, the symmetrical control mode is a mode for improving efficiency, and can be regarded as a high-efficiency mode. Furthermore, the symmetrical control mode is a mode in which relatively low load or low cooling capacity operation is performed compared with the above-mentioned asymmetrical control mode, and can be regarded as a ...

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PUM

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Abstract

An apparatus and method for controlling a linear compressor and a linear compressor and a refrigerator having the same are provided. The apparatus may include a drive configured to drive the linear compressor based on a control signal, a detector configured to detect a motor current of the linear compressor, an asymmetric current generator configured to generate an asymmetric motor current by applying a current offset to the detected motor current, and a controller configured to generate the control signal based on the asymmetric motor current. The current offset may be changed based on a change in a position of a piston of the linear compressor.

Description

technical field [0001] The invention relates to a linear compressor control device and a control method. Background technique [0002] A compressor (compressor) is usually a mechanical device that increases pressure by compressing refrigerant or other working gases, and is widely used in refrigerators and air conditioners. [0003] Compressors can be divided into reciprocating compressors (Reciprocating Compressor), rotary compressors (Rotary Compressor), and scroll compressors (Scroll Compressor). The reciprocating compressor forms a compression space between the piston and the cylinder for sucking and discharging the working gas, and the piston performs linear reciprocating motion inside the cylinder to compress the refrigerant. In the rotary compressor, a compression space for sucking or discharging working gas is formed between an eccentrically rotating roller and a cylinder, and the rotor eccentrically rotates along the inner wall of the cylinder to compress the refrig...

Claims

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Application Information

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IPC IPC(8): F04B49/06
CPCF04B35/045F04B49/06F04B49/12F04B2201/02F04B2203/0401F04B2203/0402H02K7/14H02K33/06F04B35/04F04B49/065F04B49/20F04B51/00F04B53/14
Inventor 林成镇朴大根宋永熊
Owner LG ELECTRONICS INC
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