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Flow path switching valve

A flow path switching and valve seat technology, applied to valve details, valve devices, multi-way valves, etc., can solve the problems of increased heat loss and efficiency deterioration, and achieve the purpose of suppressing valve leakage, reducing pressure loss, and reducing heat exchange capacity Effect

Active Publication Date: 2019-04-05
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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PUM

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Abstract

The invention provides a flow path switching valve, which can prevent valve leakage and is capable of effectively inhibiting pressure loss. A union body (25) is composed of one or more sheets with a pair of support plate parts (25a). The support plate parts are parallel to the surfaces of main valve seats (a first main valve seat (13) and a second main valve seat (14)) and are separated in the direction, which is orthogonal with the surfaces of the main valve seats namely the height direction of the surface of the main vale seats. As pistons (21, 22) reciprocate, first and second sliding valvecores (15A, 15B) are connected to, embedded in, or clamped to the support plate parts (25a) in a moving mode.

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