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flow switching valve

A flow path switching and valve seat technology, applied in valve details, valve devices, multi-port valves, etc., can solve the problems of increased heat loss and efficiency deterioration, and achieve the goal of suppressing valve leakage, reducing pressure loss, and ensuring tightness. Effect

Active Publication Date: 2022-03-15
FUJIKOKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, the high-temperature and high-pressure refrigerant and the low-temperature and low-pressure refrigerant flow through the adjacent ports pB and pC through the main valve seat during cooling operation, and between the adjacent ports pF and pF through the main valve seat during heating operation. Port pC flows, but the main valve seat provided with each port is generally made of metal with high thermal conductivity, so the amount of heat exchange between them (that is, heat loss) increases, and there is also a problem that the efficiency of the system deteriorates.

Method used

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Embodiment Construction

[0072] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0073] figure 1 as well as figure 2 It is a longitudinal sectional view showing one embodiment of a six-way switching valve as a channel switching valve of the present invention, figure 1 is a diagram showing the first communication state (during cooling operation), figure 2 is a diagram showing the second communication state (during heating operation). image 3 is along figure 1 Sectional view of the U-U arrow line.

[0074] In addition, in this specification, expressions indicating positions and directions such as up and down, left and right, front and rear, etc. are marked according to the drawings for convenience in order to avoid cumbersome description, and are not limited to those actually incorporated into a heat pump cooling and heating system. The position and direction in the state of etc.

[0075] In addition, in each figure, gaps formed between co...

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Abstract

The present invention provides a channel switching valve capable of preventing valve leakage and effectively suppressing pressure loss. The connecting body 25 is made of one or more plates with a pair of support plate portions (25a), and the pair of support plate portions are connected to the main valve seats (the first main valve seat (13) and the second main valve seat (14)). The seat surfaces of the main valve seats are parallel and separated in the direction (height direction of the seat surfaces) orthogonal to the seat surfaces of the main valve seats (the first main valve seat (13) and the second main valve seat (14)). The pair of first and second slide valve elements (15A, 15B) are respectively connected, fitted, or engaged with the pair of support plate portions ( 25a).

Description

technical field [0001] The present invention relates to a flow path switching valve that switches a flow path by moving a spool, for example, relates to a flow path switching valve suitable for flow path switching in heat pump cooling and heating systems. Background technique [0002] Generally, heat pump cooling and heating systems such as room air conditioners and car air conditioners include a compressor, outdoor heat exchanger, indoor heat exchanger, expansion valve, etc., and a flow path switching valve as a flow path (flow direction) switching means. [0003] As such a channel switching valve, a four-way switching valve is known, but a six-way switching valve may be used instead. [0004] Below, refer to Figure 7 (A) and (B) briefly describe an example of a heat pump cooling and heating system equipped with a six-way switching valve. The heat pump cooling and heating system 100 shown in the figure switches the operation mode (cooling operation and heating operation) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/065F16K3/314F16K3/30F16K31/122
CPCF16K3/30F16K3/314F16K11/0655F16K31/122
Inventor 田渕健资
Owner FUJIKOKI MFG CO LTD