Motor operated valve
A technology of electric valves and electric motors, which is applied in the direction of valve lifts, valve details, valve devices, etc., can solve the problems of increased manufacturing costs and labor-intensive work of electric valves 150, and achieve the effects of low manufacturing cost, easy manufacturing, and simplified structure
Active Publication Date: 2015-05-20
FUJIKOKI MFG CO LTD
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Problems solved by technology
[0010] As described above, conventionally, when manufacturing the rotor feed bolt 170 having the fully closed restricting body 158a, it is necessary to prepare the installation bush 183, and after the installation bush 183 is integrated with the male threaded pipe 161, the mold device 180 is used in the Molding is performed in a state where the male threaded pipe 161 is inserted, so it takes a lot of time and effort to manufacture, which in turn causes a problem that the manufacturing cost of the electric valve 150 increases.
Method used
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Embodiment Construction
[0132] Next, embodiments for implementing the present invention will be described with reference to the drawings.
[0133] figure 1 Showing the first embodiment of the electric valve related to the present invention, figure 1 (a) shows a cross-sectional view when fully closed, figure 1 (b) shows a cross-sectional view when fully opened.
[0134] The electric valve 1 is composed of the following components: a valve body 5, which has two conduits 2, 3 and a valve seat 4; a housing 6 connected to the valve body 5; and a rotor 7, which is disposed on the housing. The inside of 6 constitutes a part of the motor; the stator (not shown), which is fixed on the outer periphery of the housing 6, rotates and drives the rotor 7; the valve stem (male threaded part) 10, which passes through the support ring 9 and The rotor 7 is connected into one body; the stem frame (female screw part) 11, the lower end of the stem frame 11 is pressed into and fixed on the valve body 5, and the valve...
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The invention provides a motor operated valve, which is low in cost and makes it easy to prepare an assembly which can substantially serve as a rotor feed bolt. The motor operated valve of the invention comprises: a male thread component (10) which has a male thread portion (10a) and rotates along with the rotation of a rotor (7) of a motor; a valve core (12) which is arranged to the male thread component and is configured in a state relative to a valve seat (4); a movable side limit body (9a, 17) which rotates along with the rotation of the male thread component; a female thread component (11) which is arranged to a valve body (5) and is screwed with the male thread portion; and a fixed side limit body (11d, 11f) which is arranged to the female thread component and abuts against the movable side limit body. The male thread component has extended male thread forming portions (10y, 10z), which are formed by extending the original male thread portion screwed with the female thread component. The movable side limit body and the extended male thread forming portions are threadedly imbedded.
Description
technical field [0001] The present invention relates to an electric valve used for flow control and the like of refrigerant in a refrigeration cycle system. Background technique [0002] Conventionally, as the above-mentioned electric valve, for example, in Patent Document 1, a Figure 4 The electric valve 150 shown, the electric valve 150 has: a valve body 155, the valve body 155 has a first flow path 152 and a second flow path 153 communicated with the valve chamber 151, and the valve chamber of the second flow path 153 communicates The part is provided with: a valve seat 154; a rod-shaped needle valve 157 close to the throttle port 156 of the valve body 155; a cylindrical airtight casing 159; a stator coil 167 arranged outside the airtight casing 159; a rotor 164, the The rotor 164 is rotated by the energization and excitation of the stator coil 167 inside the airtight casing 159, so that it can move in the valve opening and closing direction. The rotor 164 has a cylindri...
Claims
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IPC IPC(8): F16K31/04
CPCF16K1/32F16K1/36F16K27/02F16K31/04F16K31/043
Inventor 大内共存
Owner FUJIKOKI MFG CO LTD