Title:
EXPANSION VALVE FOR A VEHICLE AIR-CONDITIONING UNIT
Document Type and Number:
WIPO Patent Application WO/2011/129529
Kind Code:
A1
Abstract:
The present invention provides an expansion valve for a vehicle air-conditioning unit, which throttles a refrigerant introduced from a condenser in order to supply the throttled refrigerant to an evaporator, and which controls an aperture by means of a refrigerant introduced from the evaporator and discharged into a compressor. The expansion valve for a car air-conditioning unit comprises: a valve main body which includes first to fourth ports, a throttle channel throttling a refrigerant introduced through the first port and discharged into the second port, a first internal channel in communication with the throttle channel and with the first port to allow a refrigerant introduced through the first port to be discharged into the throttle channel, a second internal channel in communication with the third and the fourth ports to allow a refrigerant introduced through the third port to be discharged into the fourth port, and a through hole formed vertically to pass through the first and second internal channels; a valve part which includes a needle inserted into the through hole to be movable in a vertical direction and a sleeve coupled to one end of the needle to adjust an aperture of the throttle channel according to the movement of the needle; a driving part coupled to the valve main body to vertically move the needle by a refrigerant introduced through the third port; and an elastic member to which the needle is inserted and coupled to allow the needle to be inclined vertically. Accordingly, unstable vibrations of the needle are prevented, thus enabling the expansion valve to stably operate.
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Inventors:
LEE, Geon-Ho (#108-102, Parktown 52 Sunae-dong, Bundang-gu, Seongnam, Gyeonggi-do 463-020, 463-020, KR)
이건호 (경기도 성남시 분당구 수내동 52 파크타운 108동 102호, 463-020 Gyeonggi-do, 463-020, KR)
LEE, Yong-Ju (#623-205 Dongbo Apt, SinnamugilYeongtong-dong Yeongtong-gu, Suwon-si, Gyeonggi-do 443-470, 443-470, KR)
이건호 (경기도 성남시 분당구 수내동 52 파크타운 108동 102호, 463-020 Gyeonggi-do, 463-020, KR)
LEE, Yong-Ju (#623-205 Dongbo Apt, SinnamugilYeongtong-dong Yeongtong-gu, Suwon-si, Gyeonggi-do 443-470, 443-470, KR)
Application Number:
KR2011/001751
Publication Date:
October 20, 2011
Filing Date:
March 14, 2011
Export Citation:
Assignee:
DOOWON TECHNICAL COLLEGE (678 Jangwon-ri, Juksan-myeon Anseong-si, Gyeonggi-do 456-893, 456-893, KR)
학교법인 두원학원 (경기도 안성시 죽산면 장원리 678, 456-893 Gyeonggi-do, 456-893, KR)
DOOWON ELECTRONICS CO., LTD (156-1 Wolseon-ri, Yeongin-myeon Asan-si, Chungcheongnam-do 336-821, 336-821, KR)
주식회사 두원전자 (충청남도 아산시 영인면 월선리 156-1, 336-821 Chungcheongnam-do, 336-821, KR)
LEE, Geon-Ho (#108-102, Parktown 52 Sunae-dong, Bundang-gu, Seongnam, Gyeonggi-do 463-020, 463-020, KR)
학교법인 두원학원 (경기도 안성시 죽산면 장원리 678, 456-893 Gyeonggi-do, 456-893, KR)
DOOWON ELECTRONICS CO., LTD (156-1 Wolseon-ri, Yeongin-myeon Asan-si, Chungcheongnam-do 336-821, 336-821, KR)
주식회사 두원전자 (충청남도 아산시 영인면 월선리 156-1, 336-821 Chungcheongnam-do, 336-821, KR)
LEE, Geon-Ho (#108-102, Parktown 52 Sunae-dong, Bundang-gu, Seongnam, Gyeonggi-do 463-020, 463-020, KR)
International Classes:
B60H1/32; B60H1/00; F25B41/04; F25B41/06
Attorney, Agent or Firm:
TAEBAEK INTELLECTUAL PROPERTY LAW FIRM (#906, Kolon technovalley 60-4 Gasan-dong, Geumcheon-gu, Seoul 153-770, 153-770, KR)
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