Four-way valve for air conditioner

Abstract

The invention discloses a four-way valve for an air conditioner, comprising a four-way valve block arranged in a four-way valve shell. A four-way valve exhausting communication pipe, a four-way valve evaporator communication pipe, a four-way valve return air communication pipe and a four-way valve condenser communication pipe which are communicated with the inner cavity of the four-way valve shell are arranged on the four-way valve shell. The four-way valve has the following structural characteristics that: one end of the four-way valve block is connected with one end of a spring; the other end of the spring is connected with the inner wall of the four-way valve shell; and an electromagnetic coil for controlling the expansion and the contraction of the spring is arranged on the four-way valve shell at the position of the spring. The spring comprises a left spring and a right spring; the electromagnetic coil comprises a left electromagnetic coil and a right electromagnetic coil; the left and right ends of the four-way valve block are respectively connected with one ends of the left spring and the right spring; the other end of the left spring is connected with the left inner wall of the four-way valve shell; and the other end of the right spring is connected with the right inner wall of the four-way valve shell. The invention has the characteristics of less parts, low production cost, low energy consumption, easier control and wide application range.

Description

technical field [0001] The invention relates to a four-way valve, in particular to a four-way valve for an air conditioner. Background technique [0002] The switching between cooling and heating of the air-conditioning heat pump system is accomplished through a four-way valve. Generally speaking, when cooling, see the attached figure 1 , the traditional four-way valve is through the electromagnetic coil 4 on the pilot valve 2, the spring 5 on the pilot valve 2 is in a relaxed state, and the high and low pressure inside the pilot valve 2 drives the four-way valve block 13 to move to the exhaust port 12 It communicates with the condenser port 9, and the return air port 10 communicates with the evaporator port 11. For heating, see attached figure 2 , the electromagnetic coil 4 of the pilot valve 2 must always be in the energized state, the spring 5 on the pilot valve 2 is in a contracted state, and the high and low pressure inside the pilot valve 2 drives the four-way valv...

AI Technical Summary

Problems solved by technology

[0005] The bistable four-way reversing valve can solve the problem that the heating of the traditional four-way valve must be powered on all the time. However, the structure of the bistable four-way reversing valve is extremely complicated: it includes two electromagnetic coil assemblies, One action valve block assembly and four valve blocks, etc., and the sealing requirements between the four valve blocks and the valve block cavity are high, so there is a risk of leakage. The reversing reliability of the bistable four-way reversing valve There will also be certain risks

In addition, since the parts of the bistable four-way reversing valve involve welding and other processes in the production process, and the welding process is likely to cause poor movement of the slider and other conditions, the production requirements of the bistable four-way reversing valve very high, making it quite expensive to produce

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