Title:
SURGE ABSORPTION CIRCUIT FOR SINGLE-PHASE AIR CONDITIONING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/052205
Kind Code:
A1
Abstract:
A surge absorption circuit for a single-phase air conditioning system, comprising: an L line and an N line, wherein one end (ACL, ACN) of each of the two is connected to a power source, and the other end (ACL', ACN') of each is connected to one pin of a rectifier bridge; a common mode inductor, which comprises a magnetic ring (R), and first and second common mode coils (L1, N1) that are connected in series in the L line and the N line respectively; a first surge absorption unit, which is connected to the side of the common mode inductor close to the power source and which comprises first and second varistors (ZNR1, ZNR2) and a first discharge tube (DSA1), wherein one end of each of the first and second varistors (ZNR1, ZNR2) is connected to the L line and the N line respectively, and the other end of each is connected to each other and grounded by means of the first discharge tube (DSA1); and a second surge absorption unit, which is connected to the side of the common mode inductor close to the power source and which comprises a second discharge tube (DSA2) and a third varistor (ZNR3), wherein the two are connected in series between the L line and the N line. The surge absorption circuit may improve the ability of an air conditioning circuit to absorb and withstand a surge voltage of several thousand volts.
Inventors:
CONG ANPING (CN)
SHAO HAIZHU (CN)
GENG YAN (CN)
SHI BIN (CN)
ZHANG BO (CN)
HU XIANGHUI (CN)
JIA XINXU (CN)
FENG ZHENGYANG (CN)
SHAO HAIZHU (CN)
GENG YAN (CN)
SHI BIN (CN)
ZHANG BO (CN)
HU XIANGHUI (CN)
JIA XINXU (CN)
FENG ZHENGYANG (CN)
Application Number:
PCT/CN2020/113717
Publication Date:
March 25, 2021
Filing Date:
September 07, 2020
Export Citation:
Assignee:
QINGDAO HAIER AIR CONDITIONING ELECTRONIC CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
International Classes:
H02H9/04
Foreign References:
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| CN201402965Y | 2010-02-10 | |||
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| CN204084739U | 2015-01-07 | |||
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| CN108809105A | 2018-11-13 | |||
| CN104638903A | 2015-05-20 | |||
| CN107342580A | 2017-11-10 | |||
| CN203859338U | 2014-10-01 | |||
| JP2010098872A | 2010-04-30 |
Attorney, Agent or Firm:
HANRAY LAW FIRM (CN)
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