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Expansion valve

An expansion valve and valve port technology, applied in the field of expansion valves, can solve the problems of low qualification rate, difficult manufacturing and molding, large size error, etc., and achieve the effects of saving production time, simple and reliable structure, and reducing processing difficulty.

Inactive Publication Date: 2018-01-19
HENAN KELONG REFRIGERATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The temperature-sensing mechanism of the existing expansion valve used in the refrigeration cycle is built in to reduce noise and achieve rapid cooling or heating. The stop ring on the existing expansion valve is when the motor is working, the rotor rotates with the stop ring, and when it stops , due to inertia, the stop ring cannot stop running immediately, and it is prone to collisions, which will lead to the service life of the stop ring over time. In addition, the stop ring and the wire sleeve nut are made of metal, which is difficult to manufacture and shape, with many processes and large dimensional errors , so the pass rate is low, the noise is large during use, and the cost is high

Method used

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Embodiment Construction

[0008] Embodiments are described in detail in conjunction with the above accompanying drawings, as figure 1 As shown, the screw rod 9 is assembled on the internal screw of the wire sleeve nut 4, the lower end of the screw rod is connected with the valve needle 6, the valve needle is installed on the valve port, the upper end of the screw rod is connected with the rotor insert 2, and the upper end of the valve port is The wire sleeve nut 4 is covered, the stop ring 7 is set on the upper end of the outer wall of the wire sleeve nut, the top of the wire sleeve nut is equipped with a stop ring 8, the rotor and the screw rod 9 are connected by a shaft, and the valve seat 5 is covered with Valve cover 1.

[0009] The wire sleeve nut is as figure 2 As shown, the outer wall of the wire sleeve nut is provided with an external thread for the rotation of the stop ring, the upper end of the wire sleeve nut has a groove matching the outer ring surface of the stop ring, and the lower end ...

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Abstract

The invention discloses an expansion valve. The expansion valve comprises a lead screw. The lead screw is assembled onto an internal thread of a threaded sleeve nut. The lower end of the lead screw isconnected with a valve needle. The valve needle is mounted on a valve port. The upper end of the lead screw is connected with a rotor insert sheet. The upper end of the valve port is sleeved with thethreaded sleeve nut. The upper end of the outer wall of the threaded sleeve nut is sleeved with a stop ring. The top of the threaded sleeve nut is provided with a check ring. A rotor and the lead screw are connected through a shaft. The outer wall of the threaded sleeve nut is provided with an external thread for allowing the stop ring to rotate. The upper end of the threaded sleeve nut is provided with a groove matched with the outer ring surface of the check ring. The inner ring surface of the check ring is provided with a protrusion. The outer ring surface of the check ring is provided with a check protruding block. The check protruding block and the protrusion on the inner ring surface are arranged in a back-to-back mode. By means of the technical scheme, the expansion valve is simpleand reliable in structure; the product cost can be lowered; the machining difficulty can be reduced; and the output time can be saved.

Description

technical field [0001] The invention relates to an expansion valve, which is suitable for the fields of refrigeration, air conditioning and heat pumps, and realizes automatic regulation of refrigerant flow. Background technique [0002] The temperature-sensing mechanism of the existing expansion valve used in the refrigeration cycle is built in to reduce noise and achieve rapid cooling or heating. The stop ring on the existing expansion valve is when the motor is working, the rotor rotates with the stop ring, and when it stops , due to inertia, the stop ring cannot stop running immediately, and it is prone to collisions, which will lead to the service life of the stop ring over time. In addition, the stop ring and the wire sleeve nut are made of metal, which is difficult to manufacture and shape, with many processes and large dimensional errors , so the pass rate is low, the noise is large during use, and the cost is high. Contents of the invention [0003] The task of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/50
Inventor 王在中王镇华
Owner HENAN KELONG REFRIGERATION TECH CO LTD
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