Title:
暖房回路
Document Type and Number:
Japanese Patent JP6841705
Kind Code:
B2
Abstract:
To provide a three-way valve capable of preventing a pressure within a heating circuit from excessively rising by a shut-off operation of a circulation pump 105 without releasing a heat medium to the outside in a case where a tree-way valve 1 is used in the heating circuit.SOLUTION: The three-way valve 1 comprises a cylindrical valve body 3 that is provided within a valve casing 2 in a freely rotatable manner, the valve body including: a first port 22 to which the circulation pump 105 is connected; a second port 23 to which a return path 104 from a heating terminal 102 is connected; and a third port 24 to which a bypass path 106 in which a liquid-liquid heat exchanger 107 for hot water supply is interposed is connected. At a first rotation position of the valve body 3, the first port 22 and the second port 23 are communicated and at a second rotation position of the valve body 3, the first port 22 and the third port 24 are communicated. A one-way valve 4 which allows a fluid to flow from the third port 24 to the first port 22 when a pressure in the third port 24 becomes equal to or higher than a predetermined value is assembled with a portion of a peripheral wall part 31 of the valve body 3 corresponding to the third port 24 at the first rotation position.SELECTED DRAWING: Figure 1
Inventors:
Shinya Furukawa
Application Number:
JP2017067301A
Publication Date:
March 10, 2021
Filing Date:
March 30, 2017
Export Citation:
Assignee:
Rinnai Corporation
International Classes:
F16K11/22; F16K3/26; F16K11/076; F16K11/085
Domestic Patent References:
| JP61274176A | ||||
| JP2017044266A | ||||
| JP47018956Y1 | ||||
| JP64035263U | ||||
| JP9119532A |
Attorney, Agent or Firm:
Seiryu Corporation