Linear compressor
US-2015369224-A1 · Dec 24, 2015 · US
Apparatus for controlling a linear compressor
US9243620B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9243620-B2 |
| Application number | US-66075904-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 30, 2004 |
| Priority date | Aug 30, 2004 |
| Publication date | Jan 26, 2016 |
| Grant date | Jan 26, 2016 |
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- Title
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Abstract
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The present invention discloses a linear compressor which can rapidly overcome load and improve compression efficiency, by synchronizing an operation frequency of a linear motor with a natural frequency of a movable member varied by the load and varying a stroke of the movable member according to the load. The linear compressor includes a fixed member having a compression space inside, a movable member linearly reciprocated in the fixed member in the axial direction, for compressing refrigerants sucked into the compression space, one or more springs installed to elastically support the movable member in the motion direction of the movable member, spring constants of which being varied by load, and a linear motor installed to be connected to the movable member, for linearly reciprocating the movable member in the axial direction, and varying a stroke of the movable member according to a predetermined refrigeration force, so that the movable member can be linearly reciprocated to reach a top dead center.
First claim
Opening claim text (preview).
What is claimed is: 1. An apparatus for controlling a linear compressor, comprising: a power source unit for applying a direct current voltage by rectifying an external alternating current voltage; an inverter unit for receiving the direct current voltage from the power source unit, generating an alternating current voltage according to an inverter control signal, and applying the alternating current voltage to a coil wound body; and a control unit for setting a current voltage having a peak-peak value according to a refrigeration force and having a positive peak value equalized to a positive peak value of a maximum voltage threshold value of the inverter, wherein the control unit generates the inverter control signal used for generating the set current voltage, and applies the inverter control signal to the inverter unit, wherein the control unit varies a negative peak value of the set current voltage according to the load when the positive peak value of the set current voltage is maintained identically, wherein, when the refrigeration force is high, the peak-peak value of the varied set current voltage is larger than a peak-peak value according to the maximum voltage threshold value of the inverter unit, and wherein, when the refrigeration force is low, the peak-peak value of the varied set current voltage is smaller than the peak-peak value according to the maximum voltage threshold value of the inverter unit. 2. The apparatus of claim 1 , wherein, when a value of the varied set current voltage is positive, a movable member of the compressor performs compression, and, when a value of the varied set current voltage is negative, the movable member performs suction. 3. The apparatus of claim 1 , wherein the negative peak value of the set current voltage is varied by a predetermined ratio corresponding to the load. 4. The apparatus of claim 1 , wherein the negative peak value of the set current voltage is varied by adding a predetermined alternating current voltage.
Assignees
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Classifications
Length of piston stroke · CPC title
with polarised armatures moving in alternate directions by reversal or energisation of a single coil system · CPC title
- F04B35/045Primary
using solenoids · CPC title
Voltage · CPC title
Resonant frequency · CPC title
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Frequently asked questions
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- What does patent US9243620B2 cover?
- The present invention discloses a linear compressor which can rapidly overcome load and improve compression efficiency, by synchronizing an operation frequency of a linear motor with a natural frequency of a movable member varied by the load and varying a stroke of the movable member according to the load. The linear compressor includes a fixed member having a compression space inside, a movabl…
- Who is the assignee on this patent?
- Choi Bong-Jun, Jang Chang-Yong, Cho Man-Seok, and 6 more
- What technology area does this patent fall under?
- Primary CPC classification F04B35/045. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).