Straight-way type electronic expansion valve

An electronic expansion valve, straight-through technology, applied in high-efficiency regulation technology, climate sustainability, fluid circulation arrangement, etc., can solve problems such as jamming, large radial size of stop component structure, and affecting the overall height of the valve body, etc. Achieve the effect of preventing the valve from being stuck and difficult to open, and solving production difficulties

Active Publication Date: 2011-11-23
SHANGHAI JUNLE REFRIGERATION CONTROL
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Problems solved by technology

But this technical solution mainly has the following disadvantages: (1) its limit mechanism adopts a stop assembly, and the stop rod used causes the radial dimension of the stop assembly structure to be large, which affects the overall height of the valve body, and due to machining accuracy (2) The number of internal parts of the valve body is large and the structure is complex, which increases the difficulty of assembling the parts and will inevitably increase the cost of the product

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  • Straight-way type electronic expansion valve

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Embodiment Construction

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0018] Such as figure 1 As shown, a straight-through electronic expansion valve mainly includes a sleeve 1, a screw sleeve 6, a valve body 8, connecting pipes 9, 10, and a rotor composed of a multi-pole magnetic ring 4 inside the sleeve 1, bolts 14, and a valve needle 2. . Such as figure 2 As shown, the bolt 14 is used as an insert, and is fixedly connected with the upper positioning block 13 made of resin material by integral injection molding, and at the same time, a block-shaped protrusion 13a with a limiting effect is formed in the lower dire...

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Abstract

The invention provides a straight-way type electronic expansion valve. The straight-way type electronic expansion valve can move up and down under the lead of a screw thread when a rotor rotates by using the match between the external screw thread of a bolt and the internal screw thread of a threaded sleeve of the integrally molded rotor by injection so that the movement of a valve needle relative to a valve port of a valve is controlled, and the flow of a refrigerant is controlled. A blocky projection having a limitation function is used to limit a revolving position of the screw thread and control the pretension amount of the valve needle to the valve port, so as to avoid blocking of the valve and difficulty in opening the valve caused by tightly closing the valve. The valve needle is matched with the valve port by adjusting the relative position of the valve needle and a gasket so as to effectively solve production problem caused by accumulation of production errors. The straight-way type electronic expansion valve has a compact structure, a small volume, stable work performance, low noise, long service life, and a wide application prospect.

Description

technical field [0001] The invention relates to valve technology, in particular to a straight-through electronic expansion valve, which is used in the fields of air conditioning and refrigeration to control the flow of refrigerant. Background technique [0002] At present, the electronic expansion valve uses the working principle of the stepping motor, uses the coil to drive the rotation of the magnetic rotor part, and converts the rotation of the magnetic rotor part into the up and down movement of the screw, and the screw drives the valve needle connected to it to rise or fall. , so as to control the flow rate of the electronic expansion valve. The invention patent with the authorized publication number CN1789768A represents this common technical solution. Its main structure includes a sleeve, a valve seat, a nut, a screw, a stopper assembly and a magnetic rotor, etc., wherein the sleeve and the valve seat are respectively formed The valve cavity and the valve body cavity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06
CPCY02B30/72Y02B30/70
Inventor 冯志军陈成
Owner SHANGHAI JUNLE REFRIGERATION CONTROL
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