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A rotary valve for multi-gas storage refrigerators

A technology of rotary valve and refrigerator, applied in multi-port valve, valve device, mechanical equipment and other directions, can solve the problems of long valve core life, short valve core life, difficult to take into account the valve core axial thrust, etc., and achieve long life Effect

Active Publication Date: 2017-10-27
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the axial thrust requirements of the two pairs of spools are different, it is difficult to take into account the axial thrust of the two pairs of spools by using one balance chamber. shortened lifespan

Method used

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  • A rotary valve for multi-gas storage refrigerators
  • A rotary valve for multi-gas storage refrigerators
  • A rotary valve for multi-gas storage refrigerators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] A rotary valve for multi-gas storage refrigerators, such as figure 1 with figure 2As shown, it includes the valve body, two pairs of valve cores, valve shaft 5 and motor 9. The valve core is formed by the cooperation of the stator and the mover. On the stator, a sealing surface is formed. The stator and the mover are provided with different interfaces respectively. Chamber 13, the valve shaft 5 is set in the valve body, and is fixedly connected with the movers of the two pairs of valve cores in the radial direction through pins, and can move freely in the axial direction. The shaft of the motor 9 is connected with the valve shaft 5 to drive the valve shaft 5 and The mover on the valve shaft 5 rotates. During the rotation, the interface on the mover and the interface on the stator are closed or staggered, which controls whether the pulse tube or regenerator is connected to the external gas store or high and low pressure gas; two pairs Separate balance chambers are for...

Embodiment 2

[0048] Such as Figure 11 As shown, the difference from Embodiment 1 is that the balance chamber is surrounded by a boss provided on the mover and a cavity provided on the valve shaft.

[0049] The low-pressure gas outlet can directly open on the left valve body 1 without going through the motor, and the flow through the motor is for cooling the motor. If the motor generates little heat, this can greatly simplify the design.

[0050] figure 2 and Figure 11 Among them, the valve shaft 5 can be supported by bearings, so that the motor does not bear axial force. In this way, the requirements on the motor can be reduced.

[0051] If the high-pressure gas inlet 12 enters the low-pressure gas, the high-pressure gas flows out from the motor, or the gas-collecting chamber 14 of the left valve body 1 opens a hole and flows in, then the gas-collecting chamber 14 is a high-pressure chamber, and the valve chamber 13 is a low-pressure chamber. figure 1 , figure 2 At this time, the ...

Embodiment 3

[0053] In the pre-cooled two-stage pulse tube refrigerator, it consists of two relatively independent cold heads, and the other cold head is connected to the high and low pressure gas source by another high and low pressure valve. This can be done by Figure 12 to Figure 14 The shown high and low pressure air source valve stator structure is realized, and the second high and low pressure air source valve stator regenerator interface 711a is opened on the high and low pressure air source valve stator. Its position can be staggered by 90 degrees with the first high and low pressure air source valve stator regenerator interface 711, so that the second high and low pressure air source valve stator regenerator interface 711a and the first high and low pressure air source valve stator regenerator interface 711 realizes the switching of high and low pressure gas.

[0054] The opening of the second high and low pressure air source valve stator regenerator interface 711a on the left v...

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PUM

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Abstract

The invention relates to a rotary valve for a multi-air storage refrigerator, which includes a valve body, two pairs of valve cores, a valve shaft and a motor. The valve core is formed by the cooperation of a stator and a mover. , the movers are respectively pressed on the stator, and the stator and the mover are respectively provided with different interfaces, the interfaces on the stator are connected with the external air reservoir and the vessel, and the valve shaft and the movers of the two pairs of valve cores are fixedly connected in the radial direction through pins , and can move freely in the axial direction, the motor is connected to the valve shaft to drive the valve shaft and the mover on the valve shaft to rotate; two pairs of spool movers and valve shafts form independent balance chambers, and the two balance The cavities communicate with the gas with different back pressure of the mover through the hole on the valve shaft, and balance the axial thrust of the two pairs of spools through the balance cavity. Compared with the prior art, the two pairs of spools in the present invention use separate balance chambers to balance the axial thrust of the spools, so that the surface pressures of the two pairs of spools can be optimized respectively, thereby achieving the overall stability of the rotary valve. long life.

Description

technical field [0001] The invention relates to a valve for a refrigerator with multiple gas storages, in particular to a rotary valve for a refrigerator with multiple gas storages. Background technique [0002] Common multi-gas storage refrigerators, such as multi-gas storage pulse tube refrigerators or multi-gas storage GM refrigerators, are connected to multiple gas storages and connected to high and low pressure gas sources at the same time. In these multi-gas storage refrigerators, it is a common way to use a rotary valve to control the opening and closing of the gas storage or the gas source. Among the existing valves composed of two rotary surfaces, the valve for controlling the opening and closing of the gas storage is on one rotary surface, and the valve for controlling the opening and closing of high and low pressure gas sources is on the other rotary surface. This requires two pairs of spools, each with a stator and a mover. The existing structure is that two pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/074
Inventor 朱绍伟
Owner TONGJI UNIV