Invention Grant
- Patent Title: Negative pressure release port and refrigeration device
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Application No.: US16298775Application Date: 2019-03-11
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Publication No.: US11248832B2Publication Date: 2022-02-15
- Inventor: Tadashi Okada
- Applicant: PHC HOLDINGS CORPORATION
- Applicant Address: JP Tokyo
- Assignee: PHC HOLDINGS CORPORATION
- Current Assignee: PHC HOLDINGS CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: McDermott Will and Emery LLP
- Priority: JPJP2016-177697 20160912
- Main IPC: F25D21/04
- IPC: F25D21/04 ; F25D23/06 ; F25D17/04 ; F16K17/04

Abstract:
Provided is a negative pressure release port that can prevent freezing in a channel. This negative pressure release port comprises: a cylindrical member made of a pipe in which a fluid can pass through and a base; a heating element disposed on one end inside the pipe; a retaining member that retains the heating element; a rib that connects an inner wall face of the pipe and the retaining member; and a check valve that is provided inside the base provided more toward the other end than the heating element, that allows air passing through the interior of the base to flow from the other end to the one end, and prevents flow from the one end to the other end.
Public/Granted literature
- US20190204003A1 NEGATIVE PRESSURE RELEASE PORT AND REFRIGERATION DEVICE Public/Granted day:2019-07-04
Information query
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