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Electric Valve

A technology of electric valves and valve bodies, which is applied in the direction of lifting valves, valve details, valve devices, etc., can solve the problems of poor wear resistance and achieve the effect of enhancing wear resistance and reducing jitter

Active Publication Date: 2008-03-05
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects in the above-mentioned prior art that the screw thread needs to participate in the guidance of the screw rod and requires its matching clearance to be small, resulting in poor wear resistance, and to provide a nut-to-screw Electric valve with reliable guidance and enhanced thread wear resistance

Method used

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  • Electric Valve
  • Electric Valve
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Examples

Experimental program
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Embodiment Construction

[0015] The electric valve shown in Figure 2 includes a valve body 6 and a coil (not shown in the figure) arranged at an appropriate position. Two connecting pipes 7, 8 are connected to the valve body 6. The valve port 9 between the two connecting pipes 7, 8 has a housing chamber 5 formed above the valve port 9, and a valve needle 10 corresponding to the valve port 9, a magnet 3 for sensing the electromagnetic field of the coil, and a valve needle 10 corresponding to the valve port 9 are arranged in the housing chamber 5. And the screw rod 2 with the valve needle 10 that rotates with the magnet 3 is provided with a nut 4 in the accommodating cavity 5; the difference between this structure and the existing structure is that the nut 4 (see Figure 3 for details) includes an upper guide hole 17 , the lower guide hole 12 and the internal thread section 15 in the middle; The threaded section 15 cooperates, and the upper guide section 16 and the lower guide section 11 of the screw man...

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Abstract

This invention is a motorized valve that is used to adjust refrigerant quantity of refrigerating system. The holding cavity is arranged with cooperated lead screw and nut, in order to change the magnet rotation into radial movement of valve needle. The nut includes upper guiding hole, lower guiding hole and intermediate internal thread section. The lead screw includes upper guiding section, low guiding section and intermediate external thread section. The said external and internal thread sections are cooperated. The said upper and lower guiding sections are located in the upper and lower guiding holes. Both sides of nut internal thread sections are arranged with guiding holes that are used to guide the lead screw. Thus, the screw thread section is freed from guiding the lead screw. It avoids the impact of magnet vibration and increases the abrasion resistant capability of thread section.

Description

technical field [0001] The invention relates to components for refrigeration systems, in particular to an electric valve for regulating refrigerant flow. Background technique [0002] The current common electric valve is shown in Figure 1, including a valve body 6, a coil (not shown), the screw rod 2 and the magnet 3 are integrally injection molded, and the screw rod 2 is provided with an upper guide section 16 and an external thread section 14, and The nut 4 that the screw mandrel 2 cooperates has an upper guide hole 17 (position corresponding to the guide section 16 on the screw mandrel), and an internal thread section 14 . The internal thread section 15 on the nut 4 cooperates with the external thread section 14 on the screw rod 2 so that the circular motion of the magnet 3 in response to the electromagnetic field of the coil is converted into a linear motion of the valve needle 10, so that the valve needle 10 moves away or approaches The valve port 9 is used to adjust t...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K31/06F25B41/06
CPCF25B2341/065Y02B30/72Y02B30/70F25B41/34
Inventor 张胜昌詹才意吕铭
Owner ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD