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Patent Searching and Data


Title:
FLOW PATH SWITCHING VALVE
Document Type and Number:
WIPO Patent Application WO/2017/217181
Kind Code:
A1
Abstract:
A flow path switching valve is provided with: a rotating section (221) rotating about the valve axis (CLv); a packing section (241) supported on the rotating section so as not to be rotatable relative thereto; and a valve body section (12). The valve body section has formed therein a valve chamber (12a) in which the rotating section and the packing section are accommodated, an inflow hole (12b), and outlet holes (12c, 12d). The valve body section has a valve chamber outer peripheral section (121) surrounding the valve chamber around the valve axis. The outlet holes have outlet hole opening ends (18a, 20a) open to the valve chamber at locations on the valve chamber outer peripheral section. The valve chamber outer peripheral section has body seal sections (181, 201) extended so as to surround the outlet hole opening ends and exposed to the inside of the valve chamber. As the rotating section rotates, the packing section is positioned at a predetermined position at which the packing section closes an outlet hole opening end. When positioned at the predetermined position, the packing section is pressed against body seal sections in the radial direction (DRr) relative to the valve axis by the pressure of fluid within the valve chamber, the pressure being higher than pressure within the outlet hole.

Inventors:
SUZUKI Tamaki (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
HASHIMURA Nobuyuki (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
SHIMIZU Tadao (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
KANAZAWA Hirofumi (Toyota-cho Toyota-sh, Aichi 71, 〒4718571, JP)
Application Number:
JP2017/018715
Publication Date:
December 21, 2017
Filing Date:
May 18, 2017
Export Citation:
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Assignee:
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 〒4718571, JP)
International Classes:
F16K5/04; F16K11/076
Foreign References:
JPS6078171A1985-05-02
JP2001050408A2001-02-23
Attorney, Agent or Firm:
YOU-I PATENT FIRM (Nagoya Nishiki City Bldg. 4F 1-6-5, Nishiki Naka-ku, Nagoya-sh, Aichi 03, 〒4600003, JP)
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