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Patent Searching and Data


Title:
BACK PRESSURE CONTROL VALVE AND SCROLL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2018/221229
Kind Code:
A1
Abstract:
[Problem] To achieve optimization of back pressure in a scroll compressor. [Solution] This back pressure control valve (400) is provided with: a valve hole (484A) communicating with a discharge chamber; a body (440) in which a first pressure chamber H6 communicating with a back pressure chamber, a second pressure chamber H7 communicating with an intake chamber, a third pressure chamber H8 communicating with the back pressure chamber, a fourth pressure chamber H9 into which an injection pressure Pinj is introduced, and a fifth pressure chamber H10 into which a reference pressure P0 is introduced are arranged in series; a valve body (420) extending from the first pressure chamber H6 to the fourth pressure chamber H9 and adjusting an opening; and a pressure reducing member (460) which moves the valve body (420) by means of the pressure difference between the injection pressure Pinj and the reference pressure P0. The valve body (420) has: a first pressure receiving surface S1 which receives a discharge pressure Pd in the valve opening direction; a second pressure receiving surface S2 which receives an intake pressure Ps in the valve opening direction; a third pressure receiving surface S3 which receives a back pressure Pm in the valve closing direction; and a fourth pressure receiving surface S4 which receives an injection pressure Pinj in the valve opening direction.

Inventors:
TESHIMA Atsuo (20 Kotobuki-ch, Isesaki-shi Gunma 02, 〒3728502, JP)
Application Number:
JP2018/019006
Publication Date:
December 06, 2018
Filing Date:
May 17, 2018
Export Citation:
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Assignee:
SANDEN HOLDINGS CORPORATION (20 Kotobuki-cho, Isesaki-shi Gunma, 02, 〒3728502, JP)
International Classes:
F04C18/02; F04C28/00; F04C28/26
Foreign References:
JP2010150967A2010-07-08
JPH10325396A1998-12-08
JP2017057784A2017-03-23
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