Photoelectrically controlled eccentric-positioning one-arm four-way reversing valve

Abstract

The invention relates to a photo-electric control eccentric positioning single-arm four-way makeshift valve, which comprises a valve body which is divided into a high pressure chamber and a transmission valve via the baffle plate; a inlet tube connecting the valve body; a shared tube; the first exchange tube, the second exchange tube; and a transmission device and a makeshift device individually arranged at he transmission chamber and the high pressure chamber. Wherein, the transmission device comprises a motor and a transmission axle; the baffle plate has a axial hole; the shared tube, the first exchange tube and the second exchange tube are in triangle arranged in the high pressure chamber; the makeshift device comprises a single-arm swing block and a teeth plate which are contacted tightly; the single-arm swing block has a low pressure gas groove to cover the tube mouths between the shared tube and the first/second exchange tube; the bottom of single-arm swing block that relative to the mouth of shared tube is mounted on the baffle plate via the axle; the tope of transmission axle has a speed-reducing gear; the teeth plate has saw-tooth at its front; and the speed-reducing gear is meshed with the teeth plate. The invention uses the eccentric positioning to reduce the mechanical resistance in the transmission and improve the efficiency and accuracy.

Description

【Technical field】 [0001] The invention relates to a four-way reversing valve used in a heat pump air conditioner and refrigeration device to change the direction of refrigerant flow, in particular to a photoelectric control type eccentric positioning single-arm four-way reversing valve. 【Background technique】 [0002] The four-way reversing valve can change the flow direction of the refrigerant according to the different needs of cooling and heating. [0003] The traditional four-way reversing valve generally uses an electromagnetic control method. When the low-pressure refrigerant enters the indoor heat exchanger (this is the evaporator), the air conditioner sends cold air to the room; when the high-pressure refrigerant enters the indoor heat exchanger (this time When it is a condenser), the air conditioner sends hot air to the room. Chinese patent CN1254805A discloses an "electrically controlled four-way reversing valve". It has a valve cylinder with a valve seat in the c...

AI Technical Summary

Problems solved by technology

[0007] 1. Since the rotating shaft is used for center positioning between the rotary valve block and the transmission mechanism, when the motor drives the valve block to rotate, it will be laborious and easily lead to inaccurate positioning. As the use time increases, the valve Positioning angle accuracy degrades progressively when blocks are rotated

[0008] 2. The motor used in the transmission mechanism needs to be driven by alternating current. Therefore, the performance of the four-way reversing valve is easily affected by the external power grid, resulting in a decrease in working stability.

[0009] 3. There is no scientific use of energy consumption, and no control over the running time of the motor, resulting in a large waste of electric energy

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