Rotary multi-way switching valve

Abstract

The invention discloses a rotary multi-way switching valve which is driven by a stepping motor and comprises an outer housing, a shaft, a rotor and a valve seat at the lower part of the rotor, wherein the rotor is sheathed on the shaft, a sliding blocks is arranged on the lower end surface of the rotor, the sliding block can rotate along with the rotor under the drive the stepping motor, valve ports communicated with inlet and outlet connecting pipes are arranged on a plurality of concentric circumferences of the upper end surface of the valve seat, at least two valve ports are arranged in the same radial direction, one or more valve ports are arranged on each circumference, at least two boss planes which have different radii and are matched with the corresponding valve ports and sealed are arranged on the axial bottom end surface of the sliding block, a pressure spring is arranged on the upper end surface of the sliding block, and the upper end of the pressure spring is sheathed in the lower end of the rotor. The rotary multi-way switching valve can simultaneously carry out switching control on a plurality of the valve ports when a valve core stays at a certain angle and realize the combination of various states of a refrigerant.

Description

technical field [0001] The invention relates to a rotary multi-way switching valve, which is mainly used in a refrigeration system for high-end household refrigerators to control different flow directions and sizes of refrigerants. Background technique [0002] With the continuous improvement of the quality of life, high-end household refrigerators are required to achieve multi-section temperature control and soft freezing technology that is safer for food. The existing two-position three-way refrigerator solenoid valve cannot meet the above requirements. The existing two The three-way refrigerator solenoid valve is driven by an electromagnetic coil, and the valve core moves in a straight line with only two working positions, which cannot realize multi-channel and multi-state control. The valve ports of other rotary solenoid valves with similar structures are distributed on the same diameter circle, so that Only one valve port state can be set at the same rotation angle, thu...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of the quality of life, high-end household refrigerators are required to achieve multi-section temperature control and soft freezing technology that is safer for food. The existing two-position three-way refrigerator solenoid valve cannot meet the above requirements. The existing two The three-way refrigerator solenoid valve is driven by an electromagnetic coil, and the valve core moves in a straight line with only two working positions, which cannot realize multi-channel and multi-state control. The valve ports of other rotary solenoid valves with similar structures are distributed on the same diameter circle, so that Only one valve port state can be set at the same rotation angle, which restricts the setting of the number of valve ports, reduces the number of control channels and control states, and cannot realize the combination of various control states for refrigerator refrigerants

Images