Inlet structure and pressure drop device and air conditioner
An inflow and hollow technology, applied in the valve device, the valve device for absorbing fluid energy, the valve lifter, etc., can solve the problems of uneven fluid entering the throttling orifice, vibration and noise, uneven inflow, etc. Solve the problem of self-excited vibration and noise, reduce the possibility of downstream vortex shedding, and improve the effect of uniform distribution
Active Publication Date: 2018-02-09
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0002] The inlet structure of the existing pressure drop device, the fluid inlet directly impacts on the valve needle, and flows into the throttle hole along the gap between the valve needle and the throttle hole to realize the pressure drop. The existing defects are: (1) In the inlet structure with a pressure drop device, the fluid directly impacts on the valve needle, causing the self-excited vibration of the valve needle system and the structure-fluid coupling effect, resulting in corresponding vibration and noise problems; (2) the existing inlet structure fluid enters The throttle hole is very uneven, the flow velocity near the inlet end is fast, and the flow velocity at the far inlet end is slow, and the inflow is seriously uneven. The phenomenon of vortex shedding is likely to occur when the flow is under the throttle hole, resulting in corresponding noise problems and affecting the noise quality of the product.
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[0023] In order to make the object, technical solution and advantages of the present invention clearer, the inflow structure, the pressure drop device and the air conditioner of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0024] refer to figure 1 and figure 2 , an embodiment of the pressure drop device of the present invention includes a valve body 1 and an inflow structure, and the inflow structure is arranged in the valve body 1, wherein the valve body 1 includes a valve core seat 11 and a magnet 12, and the magnet 12 is embedded in the valve body. In the core seat 11, the magnet 12 and the valve core seat 11 form a cavity for accommodating the inflow structure; the inflow structure includes a valve needle assembly 2 and a hollow sleeve 7,...
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The invention provides a flow inlet structure which is applied to a valve body. The flow inlet structure comprises a valve needle assembly and a hollow sleeve, wherein the valve needle assembly is sleeved with the hollow sleeve, the hollow part of the hollow sleeve is a step hole, a valve needle of the valve needle assembly is arranged in the step hole, a first annular flange matched with the valve body is arranged on the periphery of one end of the hollow sleeve, a second annular flange matched with the valve body is arranged on the periphery of the hollow sleeve, is arranged on one side of the first annular flange and is separated from the first annular flange, and the first annular flange is provided with a first through hole. The invention further relates to a pressure drop device and an air conditioner. According to the flow inlet structure, the pressure drop device and the air conditioner, the hollow sleeve avoids direct impact to the valve needle from fluid, and the problems of self-induced vibration and noise are resolved.
Description
technical field [0001] The invention relates to the refrigeration field, in particular to an inflow structure, a pressure drop device and an air conditioner. Background technique [0002] In the inflow structure of the existing pressure drop device, the fluid inlet directly impacts on the valve needle, and flows into the throttle hole along the gap between the valve needle and the throttle hole to realize the pressure drop. The existing defects are: (1) In the inlet structure with a pressure drop device, the fluid directly impacts the valve needle, causing the self-excited vibration of the valve needle system and the structure-fluid coupling effect, resulting in corresponding vibration and noise problems; (2) the existing inlet structure fluid enters The throttle hole is very uneven, the flow velocity near the inlet end is fast, and the flow velocity at the far inlet end is slow, the inflow is seriously uneven, and the flow under the throttle hole is easy to form vortex shed...
Claims
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IPC IPC(8): F16K1/38F16K47/02
CPCF16K1/38F16K47/08
Inventor 王继承周军杨阳周金冶张馨云段向春
Owner GREE ELECTRIC APPLIANCES INC