Electromagnetic thermal expansion valve
A technology of thermal expansion valve and solenoid valve, applied in the field of expansion valve, can solve the problems such as twisting of the coil connecting line, affecting the normal use of the electromagnetic expansion valve, and unable to completely prevent the rotation of the electromagnetic coil.
Pending Publication Date: 2018-12-07
NINGBO SONGYING AUTOMOBILE PARTS
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Problems solved by technology
Although the electromagnetic thermal expansion valve of the prior art adopts measures such as flat non-slip rubber gaskets and thread locking glue to prevent the electromagnetic coil from rotating, it cannot completely prevent the electromagnetic coil from rotating, which may easily cause the coil connecting wire to twist and fall off, affecting the normal operation of the electromagnetic expansion valve. use
Method used
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[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0018] As shown in the figure, an electromagnetic thermal expansion valve includes a valve body 1, a power head 2, an O-ring 3, a push rod sleeve 4, a thimble 5, an O-ring 6, a bead seat part 7, a damping clip 8, a spring 9, O-ring 10, adjusting cap 11, O-ring 12, solenoid valve 13, gasket 14, screw 15; the valve body 1 and the power head 2 are connected by threads and sealed by O-ring 3; the top The rod sleeve 4 is arranged under the middle power head 2 of the valve body 1; the ejector pin 5 is arranged under the middle power head 2 of the valve body 1 and passes through the ejector rod sleeve 4; under the ejector rod sleeve 4, the ejector pin 5 is arranged between the valve body 1 There is an O-ring 6; the bead seat part 7 is arranged below the thimble 5; a damping clip 8 and a spring 9 are arranged below the bead seat part 7, and are fixedl...
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An electromagnetic thermal expansion valve comprises a valve body, a power head, an O-shaped ring, an ejector rod sleeve, a centre, a ball seat part, a damping clamp, a spring, an adjusting cap, an electromagnetic valve, a gasket and a screw; an electromagnetic coil is provided with a positioning pin, the valve body is provided with a positioning hole, the positioning pin of the electromagnetic coil is installed in the positioning hole of the valve body, and the electromagnetic coil is prevented from rotating; a copper core is provided with an electromagnetic valve balance hole, and the electromagnetic valve can be quickly closed when needs to be closed; and a moving iron core is provided with a pressure balance hole, the pressure balance hole is not parallel to the axis of the movable iron core, the pressure balance hole and the movable iron core are in the zigzag shape, the pressure balance speed of the upper portion and the lower portion of the movable iron core can be decreased when the electromagnetic valve needs to be opened, thus, the electromagnetic valve is slowly opened, and a compressor is protected from liquid impact.
Description
technical field [0001] The invention relates to the field of automobile air conditioners, and more specifically relates to an expansion valve. Background technique [0002] The expansion valve is an important part of the automobile air-conditioning refrigeration device, and it is one of the four basic equipments in the refrigeration system. The superheat at the outlet of the evaporator is used to adjust the flow of refrigerant sent to the evaporator. The principle of the expansion valve’s control of the refrigerant flow is that the power head senses the superheat at the outlet of the evaporator, and the pressure difference caused by the superheated refrigerant and the saturated refrigerant in the power head drives the opening and closing of the valve hole, so that as much refrigerant as possible enters Evaporator, so that the evaporator can play its best performance. [0003] The thermal expansion valve only plays the role of adjusting the pressure and flow of refrigerant....
Claims
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Login to View More IPC IPC(8): F25B41/06F25B41/34F25B41/36
CPCF25B41/31
Inventor 严雅灯施孝哉张艺耀俞崇捷陈宇涛
Owner NINGBO SONGYING AUTOMOBILE PARTS