Dehumidification valve

Abstract

The invention provides a dehumidification valve for an air conditioner, wherein the pulsation of a refrigerant is reduced by means of a simple structure so as to improve the quietness property. A valve seat part (2b) is provided with a plurality of throttling grooves (21). During the dehumidifying operation, the valve spool is driven through electrifying an electromagnetic coil unit (6). By means of a valve part (3a), the valve seat part (2b) of a valve seat member (2) with a flange is closed. By means of the throttling grooves (21), the refrigerant is expanded to realize the throttling effect. Pulsation absorbent members (4) are arranged around the valve shaft (3b) of the valve core (3). By means of the pulsation absorbent members (4), the pulsation energy of the refrigerant flowing into a valve chamber (1A) through a primary-side joint (10) is absorbed. Each pulsation absorbent member (4) is composed of a sintered filter, a demisting filter, a foam member, a member laminated with a flat plate, a member laminated with a bending plate, a double-layer spiral spring, double-layer punching metal and the like. Alternatively, the valve shaft of the valve core is made of porous pulsation absorbent members.

Description

technical field [0001] The present invention relates to a dehumidification valve provided between a first heat exchanger and a second heat exchanger constituting an indoor heat exchanger of an air conditioner to throttle refrigerant during a dehumidification operation. Background technique [0002] Conventionally, in an air conditioner having a dehumidification operation function, an indoor heat exchanger is constituted by a first heat exchanger and a second heat exchanger, and a dehumidification valve is provided between the two heat exchangers. In addition, during normal operation, the dehumidification valve is fully opened to make the two heat exchangers function as a whole, and during dehumidification operation, the dehumidification valve is made to function as a throttling device, so that the upstream side (high pressure side) The first heat exchanger functions as a condenser, and the second heat exchanger on the downstream side (low-pressure side) functions as an evapo...

AI Technical Summary

Problems solved by technology

[0010] However, the refrigerant flowing into the valve chamber from the primary-side joint on the high-pressure side is a liquid-gas mixed refrigerant, and due to the discharge of the refrigerant from the compressor, the throttling of the expansion valve provided upstream of the dehumidification valve, and the air conditioner Bending of piping, etc., generates pulsation of refrigerant from the primary side joint to the valve chamber

Therefore, the tank system is excellent in terms of durability and low cost, but the pulsation of the refrigerant increases the tank passing sound (the sound when the refrigerant passes through the tank), and there is room for improvement in terms of quietness

Images