Title:
FREEZE PROTECTION VALVE USING A PHASE CHANGE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2010/137749
Kind Code:
A1
Abstract:
The present invention relates to a freeze protection valve which prevents a pipe from freezing by discharging water in the pipe in advance before the pipe is frozen as exterior temperature drops below the freezing temperature of the water. The freeze protection valve comprises: a housing to be coupled to a pipe port of a movable pipe in which a fluid flows; a drain chamber which is provided in a portion of the housing facing toward the pipe port and which has a water intake hole connected to the inside of the movable pipe and a water drain hole connected to the outside of the housing; a receiving chamber which is provided on the opposite side of the drain chamber of the housing and which accommodates a phase change material that is phase-changed from a liquid to a solid according to a temperature drop and reduced in volume; and a plunger which is movably installed in the drain chamber and has: a piston positioned inside the receiving chamber and moved according to the volume variation of the phase change material at one side of the plunger; and a valve for opening/shutting the water intake hole according to the movement of the piston at the other side of the plunger.
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Inventors:
KIM, Joungha (3 Daelim Apt, Sinbu-dong Dongnam-gu, Cheonan-si, Chungcheongnam-do 330-773, 330-773, KR)
김종하 (충청남도 천안시 동남구 신부동 대림아파트, 330-773 Chungcheongnam-do, 330-773, KR)
YUN, Jaeho (6 Ssangyong 3 Cha Apt, 852 Manhyeongmaeul,Sanghyeondong, Suji-gu, Yonginsi, Gyeonggi-do 448-523, 448-523, KR)
김종하 (충청남도 천안시 동남구 신부동 대림아파트, 330-773 Chungcheongnam-do, 330-773, KR)
YUN, Jaeho (6 Ssangyong 3 Cha Apt, 852 Manhyeongmaeul,Sanghyeondong, Suji-gu, Yonginsi, Gyeonggi-do 448-523, 448-523, KR)
Application Number:
KR2009/002756
Publication Date:
December 02, 2010
Filing Date:
May 25, 2009
Export Citation:
Assignee:
KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY (35-3 Hongcheon-ri, Ipjang-myeon Seobuk-gu, Cheonan-si, Chungcheongnam-do 330-825, 330-825, KR)
한국생산기술연구원 (충청남도 천안시 서북구 입장면 홍천리 35-3, 330-825 Chungcheongnam-do, 330-825, KR)
SUNGJI AIR-CONDITIONING TECHNOLOGY CO., LTD. (206 Sungbo Plaza, l53 Yangiae-dong, Seocho-gu, Seoul 137-130, 137-130, KR)
주식회사 성지공조기술 (서울특별시 서초구 양재동 153 성보프라자 206, 137-130 Seoul, 137-130, KR)
KIM, Joungha (3 Daelim Apt, Sinbu-dong Dongnam-gu, Cheonan-si, Chungcheongnam-do 330-773, 330-773, KR)
한국생산기술연구원 (충청남도 천안시 서북구 입장면 홍천리 35-3, 330-825 Chungcheongnam-do, 330-825, KR)
SUNGJI AIR-CONDITIONING TECHNOLOGY CO., LTD. (206 Sungbo Plaza, l53 Yangiae-dong, Seocho-gu, Seoul 137-130, 137-130, KR)
주식회사 성지공조기술 (서울특별시 서초구 양재동 153 성보프라자 206, 137-130 Seoul, 137-130, KR)
KIM, Joungha (3 Daelim Apt, Sinbu-dong Dongnam-gu, Cheonan-si, Chungcheongnam-do 330-773, 330-773, KR)
International Classes:
E03B7/10; F16K31/64
Attorney, Agent or Firm:
LEE, Keon-Cheol (J K & LEE IP Law Firm, 607 Kolon Science Valley 1cha,187-10 Guro-dong, Guro-Gu, Seoul 152-050, 152-050, KR)
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