Refrigerant switching valve and equipment equipped with refrigerant switching valve

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerant change-over valve, which improves the change-over performance of a refrigerant, and a device.SOLUTION: A refrigerant change-over valve 60 includes: a valve body 80; driving means 74; a rotor pinion gear 75 and an idler gear 79 which transmit rotations from the driving means to the valve body 80; a case 66 including these components; a valve seat plate 67 provided at one end of the case 66; a first valve seat plate part 67a serving as an outer shell of an outer periphery of the valve seat plate 67; a second valve seat plate part 67b which is thicker than the first valve seat plate part 67a; an inflow pipe connection part A of the first valve seat plate part 67a with which an outflow pipe 68 is connected; and a communication pipe connection part of the second valve seat plate part 67b with which a communication pipe 69 is connected. The communication pipe connection part may be opened or closed by rotations of the valve body 80. The idler gear 79 is pivotably supported at a position, which is separated from an upper stage part 95a thicker than a lower stage part 95b of the first valve seat plate part 67a, by an idler shaft 78. The valve seat plate 67 and the case 66 are joined in a sealing manner.

Description

technical field [0001] The present invention relates to a refrigerant switching valve and a device provided with the refrigerant switching valve. Background technique [0002] Conventionally, there exist the following patent documents 1-6 as background art of this invention. [0003] In Patent Document 1 (Japanese Patent No. 4208441), the following technology is disclosed in claim 1: "A valve drive device is a valve drive device in a multi-directional control mode, comprising a main body and a housing, and the main body is provided with In the fluid flow path, there are a plurality of openings communicating with the inflow pipe or the outflow pipe, and the main body includes a valve body for opening and closing the openings, a drive unit for driving the valve body, and rotation is transmitted from the drive unit to the valve body. The rotation transmission member, the valve seat plate formed with the opening and press-contacted with the valve body to open and close the open...

AI Technical Summary

Problems solved by technology

[0023] Therefore, the material cost of the refrigerant piping increases, and the assembly cost increases, which may increase the cost.

[0024] In the structure described in Patent Document 3, since a plurality of valve bodies are required to open and close a plurality of valve ports, the number of parts increases and the cost increases.

[0025] In Patent Document 4, it is described that only any one of the three outlet channels communicates with the inlet channel (the first switching position, the second switching position, and the fourth switching position), and the position where all the outlet channels are simultaneously closed (the first switching position) Three switching positions), blocking one outlet channel and the other two outlet channels communicate with the inlet channel (the fifth switching position), but outside (outside the position where the outlet channel communicates with the inlet channel or the position of blocking) The connected state of the channels is not recorded

[0026] In the structure described in Patent Document 5, one of the three discharge holes is connected to the suction hole, and the other two discharge holes are connected to each other, so that the upstream and downstream of the two heat exchangers are replaced, and the cooling and cooling can be switched. Heating, but there is no description of other connected states

[0027] In the structure described in Patent Document 6, the valve body is driven via the reduction gear and the valve body holder supported in a floatable manner, so the number of parts increases and the cost is high.

In addition, as in Patent Document 5, one of the three discharge ports communicates with the suction port, and the other two discharge ports communicate with each other, so that the upstream and downstream of the two heat exchangers are replaced, and cooling and cooling can be switched. heat, but other connected states are not described

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