CN101042197B - Electric valve - Google Patents

Electric valve Download PDF

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Publication number
CN101042197B
CN101042197B CN2007100897924A CN200710089792A CN101042197B CN 101042197 B CN101042197 B CN 101042197B CN 2007100897924 A CN2007100897924 A CN 2007100897924A CN 200710089792 A CN200710089792 A CN 200710089792A CN 101042197 B CN101042197 B CN 101042197B
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CN
China
Prior art keywords
valve shaft
valve
shaft support
metalwork
rotor
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Application number
CN2007100897924A
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Chinese (zh)
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CN101042197A (en
Inventor
佐藤雅也
望月健一
梅泽仁志
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Fujikoki Corp
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Fujikoki Corp
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Publication of CN101042197A publication Critical patent/CN101042197A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures

Abstract

The invention provides an electric motor valve which can miniaturize tank length and valve body, stabilize rotor rotation, eliminate rotating directional stress on the valve seat face applied by valve core and be manufactured with low cost. A cylinder (38) with a bottom is embedded in a guiding bush (26), thereby the rotation of an embedded metal piece (36) incorporated with a rotor (30) is guided and transmitted stably to a valve shaft stand (32). The embedded metal piece (36) and the valve shaft stand (32) are clamped non-rotatably but capable of relative moving in axial direction by a special-shaped shaft embedded with a special-shaped hole. The valve shaft stand (32) moves along the axis direction during rotation by a spiral feeding mechanism between the valve shaft stand and the guiding bush (26). The movement of the valve shaft stand (32) in axis direction is transmitted to a valve core (23) on top of a valve shaft 24, and the circulation flow can be adjusted by contacting and separating of the valve core (23) and the valve seat (22).

Description

Mortor operated valve
Technical field
The mortor operated valve that the present invention relates to pack into and use in air conditioner, the refrigerator etc. especially relates to the mortor operated valve that can realize miniaturization, low noiseization with simple formation.
Background technique
In the past, the mortor operated valve that uses in this air conditioner of packing into, the refrigerator etc. is an equipment of regulating the flow of fluid such as refrigeration agent, generally include valve body, be fixed in the jar that the round-ended cylinder shape is arranged on the top of above-mentioned valve body by flange shape portion with valve chamber and valve seat, inboard at this jar is built-in with rotor, is embedded with the stator that central part has inserting hole outside above-mentioned jar outside.Disclosed the such mortor operated valve of an example in the patent documentation 1.
Fig. 4 represents the longitudinal sectional view of above-mentioned existing mortor operated valve 1 like this, valve body 2 has valve chamber 2c, guide bush fixing part 2d, jar Fixed Division 2e, be provided with fluid intake channel 2a, the fluid outlet pipe 2b of fluid inflow and outflows such as refrigeration agent at valve chamber 2c, and the valve seat 2f that to be provided with the formed spool 3a in the top of valve shaft 3 in valve chamber 2c inside be the needle-valve contact separation.
Guide bush fixing part 2d is positioned at the top of valve chamber, and valve body 2 and guide bush 4 is fixing.Periphery at guide bush 4 is formed with outer screw section 4a, and formed female thread 5a of portion of the interior week of valve shaft support 5 and outer screw section 4a screw, and constitute screwfeed mechanism by outer screw section 4a and the 5a of female thread portion.The underpart is formed with valve shaft 3 intercalation slidably of spool 3a in valve shaft support 5, contract be contained in the valve shaft support 5 compression helical spring 3b all the time to valve shaft 3 towards the below application of force.
Jar Fixed Division 2e is positioned at the upper end of valve body 2 and is made of by riveted fixing and the lower end surface annular metal sheet by solder bond inner peripheral surface, by in its peripheral part and jar 1 flange shape welding, jar 1 is fixed on the valve body 2.Valve shaft 3 and rotor 7 are by support ring 6 combinations.The brazen metal ring that support ring 6 inserts when being shaped by rotor 7 constitutes.Interior all holes portion of the top teat of valve shaft support 5 and support ring 6 is chimeric, with this teat riveted fixing, thereby with rotor 7, support ring 6 and 5 combinations of valve shaft support.Pushing nut 3c is pressed into the upper end that is fixed on valve shaft 3, compression helical spring 3d cylindraceous chimeric loosely or with the periphery Elastic Contact be installed in the periphery of pushing nut 3c, when screwing of the 5a of female thread portion of the outer screw section 4a of guide bush 4 and valve shaft support 5 freed, can apply this power that screws of recovery.In addition, the upper limit that moves of the top of valve shaft 3 and rotor 7 is by the decision that contacts of the inner face of the spring 3d on the top of being located at rotor 7 and jar 1.By being fixed on the last baffle element 8 on the valve shaft support 5 and being fixed on the countercheck mechanism of stroke that following baffle element 9 on the guide bush 4 is construed as limiting the above-below direction of valve shaft 3.
Be built-in with rotor 7 in the inside of jar 1, not shown stator is embedded in the outside of jar 1 outward.Be provided with stator coil and yoke up and down in the inside of stator, stator coil is by lead and be located at the connector energising of stator periphery.Yoke is excitation by the energising of stator coil, thereby makes rotor 7 rotations, by screwfeed mechanism valve shaft support 5 and valve shaft 3 is relatively moved, so that spool 3a regulates the flow of refrigeration agent as on-off action.
The formation of relevant stator etc. is a known structure in the existing mortor operated valve technical field, for example can adopt following structure etc., illustrate for detailed structure: the mounting plate that below stator, is fixed with metal ring-type, make with the spline sheet of this mounting plate formation one and engage with the fluid intake channel 2a that gives prominence to from valve body 2 along continuous straight runs, and card complex hole is engaged with one side of the ring-type weld part of valve body 2 and jar 1, to press against on the another side of ring-type weld part with the push-pads that mounting plate forms one, thereby stator is fixed.
But in said electric valve, rotor rotates with it, and the effect of the screwfeed mechanism by being configured in the guide bush outside desires to make the axial position of the valve shaft that is configured in the guide bush inboard to change, and can produce following phenomenon thus.That is,, be dissimilar, so the rotating force of paying rotor with electromagnetic action from stator changes because of valve position along with the axial position of the switching rotor of valve changes.Allow moving axially of rotor because have to, so the axial dimension of mortor operated valve increases easily, and because the screwfeed mechanism of guide bush and valve shaft support is positioned at the below of rotor, thereby the external diameter of jar total length and valve body increases and maximizes.And screwfeed mechanism is positioned at the below of rotor, and rotor drives by the screwfeed mechanism rotation of so configuration, vibrates easily during the rotor rotation.
In addition, also following problems can appear in said electric valve.That is, collar and spring have been used in the connection between rotor and the valve shaft support, cause the part number to increase.And, because be to utilize the block piece restrict rotor to move, so can produce impulsive sound during the block piece butt axial.The countercheck mechanism of restrict rotor rotation is positioned at the below of rotor equally, so produce the space at 8,9 peripheral parts of Fig. 4, becomes the dead angle.
Patent documentation 1: the Japan Patent spy opens 2001-50415 communique (paragraph 0034～0038)
For this reason, need be by the embedding metalwork that connects rotor and guide bush be studied, make the rotation of rotor valve shaft and the driving mechanism structure that passes to spool by being configured in guide bush inside, the structure that rotor does not move vertically in jar inside when making the valve switching, to solve above-mentioned each problem, there is the problem that should solve in this respect.
Summary of the invention
Consider the problems referred to above, the mortor operated valve that the object of the present invention is to provide a kind of stress that can make the spin stabilization of jar total length and valve body miniaturization, rotor and can eliminate the sense of rotation that spool applies the seat surface of valve seat, do not have the block piece impulsive sound, can make with low cost.
In order to address the above problem, mortor operated valve of the present invention comprises: valve body, and it utilizes spool that the valve shaft tip portion is provided with and the valve seat contact separation in the valve chamber to regulate the circulation flow; Rotor, it is built in the inside that is installed in the jar on the described valve body, and is driven from the outside rotation in order to make described spool and described valve seat contact separation; And drive and mechanism, the contact separation action that its rotation transformation with described rotor is described spool, described driving mechanism comprises: guide bush, its configuration direction from described valve body side towards described rotor in described jar is extended and is fixed; Embed metalwork, itself and described rotor is integrated and rotatably guided by described guide bush; The valve shaft support, it is configured in the described guide bush, can not rotate relatively with described embedding metalwork but can be on axial direction engaging with relatively moving; Screwfeed mechanism, it is arranged between described guide bush and the described valve shaft support, will be the moving of described axial direction of described valve shaft support from the rotation transformation of described rotor.
Adopt this mortor operated valve, when valve opens and closes, be not rotated with in jar, not changing axial position at electromagnetic action lower rotor part from stator.The rotation of rotor passes to the embedding metalwork that constitutes one with rotor, and the rotation that embeds metalwork passes to the valve shaft support, and this valve shaft support and embedding metalwork snap in guide bush and can not rotate relatively but can relatively move at axial direction.The rotation that embeds metalwork is directed to the lining guiding, so stably rotation is passed to the valve shaft support.When the valve shaft support rotated, the valve shaft support moved along axial direction by being arranged on the screwfeed mechanism between valve shaft support and the guide bush.At this moment, the valve shaft support snaps into and can not rotate relatively with embedding metalwork, can rotate with embedding metalwork, but can relatively move on axial direction, can change the position of relative embedding metalwork.The valve shaft support is at the mobile spool that is provided with on the valve shaft tip portion that passes to of axial direction, spool and indoor valve seat contact separation, adjustable through-current capacity.
In described mortor operated valve, described embedding metalwork be configured as have with the incorporate peripheral portion of described rotor with the band eaves cap shape of tube portion at the bottom of the band that described peripheral portion links to each other, tube portion at the bottom of described band, the rotation of described embedding metalwork can be guided by described guide bush.Be cast into etc. by the peripheral portion that when rotor is shaped, will embed metalwork, embed metalwork and rotor becoming one easily.Because tube portion is configured as band eaves cap shape at the bottom of embedding the band of metalwork, thereby by the tube face of this face and guide bush is chimeric, the rotation of embedding metalwork by and guide bush between the mutual guiding of a face obtain stable guiding.
In described mortor operated valve, the described relatively embedding metalwork of described valve shaft support can make the irregularly-shaped hole that forms in the tube portion at the bottom of the described band of the special-shaped axial region that has on the described valve shaft support and described embedding metalwork chimeric.The irregularly-shaped hole that forms in the tube portion at the bottom of the special-shaped axial region by the valve shaft support and the band of described embedding metalwork is chimeric, and embedding the relative valve shaft support of metalwork can not rotate relatively, and the rotation that embeds metalwork does not pass to the valve shaft support with dallying.The valve shaft support can engage with the embedding metalwork with relatively moving, so allow the valve shaft support to embed axial the relatively moving of metalwork relatively.
In described mortor operated valve, described embedding metalwork can be configured to tube portion at the bottom of the described band be embedded in rotatably obtain under the state of described guide bush inside the guiding.By such configuration, the outer circumferential face of tube portion is directed to the inner peripheral surface guiding of lining at the bottom of the band of embedding metalwork.
In the described mortor operated valve, described embedding metalwork is configured to rotatably obtain guiding under tube portion at the bottom of the described band covers the state in the described guide bush outside.By such configuration, the inner peripheral surface of tube portion is directed to the outer circumferential face guiding of lining at the bottom of the band of embedding metalwork.
In described mortor operated valve, described valve shaft support can be by being connected around the guiding bindiny mechanism that does not have constraint on the sense of rotation of axis and lead in the scope of the gap stroke of being scheduled on the described axial direction with described valve shaft.Valve shaft and valve shaft support be by being connected around the abandoned guiding of the sense of rotation of axis bindiny mechanism, so when the switching of valve was especially closed valve events, its rotating force did not pass to valve shaft during the rotation of valve shaft support, can alleviate the stress that produces between spool and the valve seat.In addition, this guiding bindiny mechanism is on axial direction, pilot valve bracing strut and valve shaft in predetermined gap stroke range, the occasion that moves at the feeding effect lower edge of screwfeed mechanism axial direction when therefore the valve shaft support rotates has alleviated the stress that produces between spool and the valve seat in the scope of this gap stroke.
In the mortor operated valve with guiding bindiny mechanism, described guiding bindiny mechanism comprises: spring, and it applies the thrust of described relatively valve shaft support towards described valve seat direction to described valve shaft; Block piece, it is arranged on the described valve shaft support, and limits the release of described valve shaft; Spheroid, it limits described valve shaft and moves and allow the level and smooth relative rotation of valve shaft with respect to described valve shaft support relative to described valve shaft support towards the direction of compressing described spring.Owing to have this guiding bindiny mechanism, valve shaft is applied under the effect of spring all the time towards the power of the direction of spool and valve seat butt, is restricted by moving with the valve seat butt.Even further release the valve shaft support behind spool and the valve seat butt, valve shaft is also motionless, Yi Bian only the valve shaft support can be in the scope of gap stroke compress spring on one side and advances.Valve shaft compresses on one side relative to the valve shaft support towards the restriction that is subjected to spheroid relative to moving of the direction that retreats spring on one side.Spheroid is the contact of rolling with contacting of valve shaft support and valve shaft, and Zuo Yong friction between the two is low friction, can eliminate the power of the sense of rotation that passes to valve shaft in fact.
In mortor operated valve with guiding bindiny mechanism, the configurable bottom of described guiding bindiny mechanism at described valve shaft support.Under this occasion, make the form that its bottom is divided embed from the top in the guide bush by embedding metalwork, can shorten the length of valve shaft support, its result helps the miniaturization of mortor operated valve.
In mortor operated valve with guiding bindiny mechanism, the configurable top of described guiding bindiny mechanism at described valve shaft support.Under this occasion, the valve shaft support must be accommodated the length of guiding bindiny mechanism size.The configuration of such guiding bindiny mechanism and make the bottom branch that embeds metalwork last ground will embed metalwork from above the combination of form of covering guide bush, can avoid axial length long, thereby preferable.At this moment, described valve shaft support can be guaranteed the length of targeting part that valve shaft is led in its underpart.
In described each mortor operated valve, described screwfeed mechanism preferably includes the outer screw section that screws with described female thread portion that forms on the female thread portion that forms on the described guide bush and the described valve shaft support.Be fixed on and be formed with female thread portion on the guide bush on the valve body, but the valve shaft support with the outer screw section that screws with this female thread portion in guide bush under the screwfeed effect limit rotation edge axial direction move.
The present invention has above-mentioned formation, for the on-off action that carries out valve is that the driving mechanism that move of spool on the valve shaft direction comprises with the rotation transformation of rotor: guide bush, and its configuration direction from the valve body side towards rotor in jar is extended and is fixed; Embed metalwork, it guides with rotor is integrated and rotatably be directed to lining; The valve shaft support, it is configured in the guide bush, and embeds that metalwork can not rotate relatively but can engage on the axial direction of valve shaft with relatively moving; And screwfeed mechanism, it is arranged between guide bush and the valve shaft support, to be the moving of valve shaft direction of valve shaft support from the rotation transformation of rotor, thereby with have the existing mortor operated valve that the valve shaft support is configured in the structure in the guide bush outside and compare, rotor does not move axially, and the rotation of embedding metalwork is directed to lining guiding, its result, can make jar total length and valve body miniaturization, and make the spin stabilization of rotor.In addition, owing to be not in jar, to be provided with to allow moving axially but directly limiting the formation of the countercheck mechanism of its amount of movement of rotor, so pulse control for the rotor rotation, need not make the countercheck mechanism action for the setting of reference point, thereby quietization of energy, do not need to be used to be provided with the space of countercheck mechanism, can realize the miniaturization of mortor operated valve.And, can simplify the engaging that embeds metalwork and guide bush, reduce the part number, so the mortor operated valve made from low cost can be provided.
Description of drawings
Fig. 1 is the figure of an example of expression mortor operated valve of the present invention.
Fig. 2 is the end view drawing that embeds other chimeric forms of metalwork and valve shaft support in the expression mortor operated valve of the present invention.
Fig. 3 is the figure of another example of expression mortor operated valve of the present invention.
Fig. 4 is the longitudinal sectional view of expression one routine existing mortor operated valve.
Embodiment
Below, be elaborated with reference to the example of accompanying drawing to mortor operated valve of the present invention.Fig. 1 is the figure of an example of expression mortor operated valve of the present invention, and figure (a) is its longitudinal sectional view, and figure (b) is the end view drawing of another chimeric form of expression embedding metalwork and valve shaft support.Mortor operated valve 10 comprises: the spool 23 of valve seat 22 contact separations in utilization and the valve chamber 21 is regulated the valve body 20 of the circulation flow of refrigeration agent; Be fixed on the valve body 20, be built-in with the jar 40 of the rotor 30 that makes spool 23 contact separations.The outer known stator that is embedded with not shown rotation driving rotor 30 on the jar 40.Stator comprises the yoke that is made of magnetic material, is wound on stator coil up and down on this yoke by bobbin, and stator is embedded in outward on jars 40.Constitute stepping motor by rotor 30 and stator as the driving source of the valve on-off action that carries out mortor operated valve 10.The fluid intake channel 20b of the fluid outlet pipe 20a of vertical and substantially horizontal extends out from valve body 20.
Jars 40 have a round-ended cylinder shape for what is formed by nonmagnetic metal such as stainless steels, and utilize welding to wait and be fixed on the flange shape plate 41 of stainless steel, inner maintenance airtight conditions, and this flange shape plate 41 is fixed in the top of valve body 20.Spool 23 constitutes the structure of needle-valve in brazen valve shaft 24 lower ends.Making the spool 23 and the driving mechanism of valve seat 22 contact separations is screwfeed mechanisms, and this screwfeed mechanism comprises: be fixed from the direction extension of valve body 20 to rotor 30, and be formed with the tubular guide bush 26 of retaining thread portion 25; Valve shaft support 32 with mobile screw section 31 that the retaining thread portion 25 with guide bush 26 screws.
Retaining thread portion 25 forms female thread portion week in the bottom of guide bush 26.In addition, mobile screw section 31 forms outer screw section in the lower, outer perimeter of valve shaft support 32.Guide bush 26 and valve shaft support 32 are all formed by brazen cylindric material.
Rotor 30 is connected by embedding metalwork 36 with valve shaft support 32.In this example, embed metalwork 36 and form, when rotor 30 is shaped, embed by one piece of brazen metal ring shaping.Embed metalwork 36 be configured as peripheral portion 37 with ring-type with the hat-shaped that eaves is arranged of tube portion 38 at the bottom of the band that peripheral portion 37 links to each other.Be cast into by the peripheral portion 37 that when rotor 30 is shaped, will embed metalwork 36, embed metalwork 36 and rotor 30 becoming one structures.In embedding metalwork 36, band end tube portion 38 is entrenched in the top of guide bush 26, so the rotation of embedding metalwork 36 is directed to lining 26 and stably guides during rotor 30 rotations.In this example, the cylindrical outside surfaces of band end tube portion 38 embeds from the upper end of guide bush 26, and is chimeric with cylindrical internal surface.
The bottom of tube portion 38 divides 38a to be formed with circular irregularly-shaped hole 39 in addition at the bottom of the band that embeds metalwork 36.The top 33 of valve shaft support 32 become just in time can be chimeric with the irregularly-shaped hole 39 that embeds metalwork 36 special-shaped axial region.In this example, shown in Fig. 1 (b), be formed with tabular surface 33a, 33a and 39a, 39a as the top 33 and the irregularly-shaped hole 39 of special-shaped axial region.By the chimeric engaging of special-shaped axial region (top 33) and irregularly-shaped hole 39, also rotation together of valve shaft support 32 when embedding metalwork 36 rotations, and valve shaft support 32 can embed metalwork 36 relatively and axially relatively moving.Therefore, the rotation that embeds metalwork 36 can not pass to valve shaft support 32 with dallying, and embedding metalwork 36 relatively moves along the valve axis direction while valve shaft support 32 can rotate relatively under the effect of screwfeed mechanism.
Valve body 20, valve shaft 24, guide bush 26, valve shaft support 32, embedding metalwork 36 all are made of brass as mentioned above, as the formation of having considered recirculation.And except embedding metalwork 36, each part all is to embed or the screw thread combination, so for example pass through the chimeric of relief valve bracing strut 32 and guide bush 26, just can utilize each part again.Certainly, also can use for example stainless steel of brass metal in addition.Certainly, also can only use for example stainless steel of brass metal in addition to valve shaft 24.
In mortor operated valve 10, connect by guiding bindiny mechanism 50 between valve shaft 24 and the valve shaft support 32, this guiding bindiny mechanism 50 is unfettered on the sense of rotation of axis, but leading in the scope of predetermined gap stroke on the axial direction.In this example, guiding bindiny mechanism 50 is configured in the bottom 34 of valve shaft support 32.The bottom 34 of valve shaft support 32 becomes the cavity of the tubular of lower opening, contains the top and the guiding bindiny mechanism 50 of valve shaft 24 in this cavity.34 outer circumferential face is formed with above-mentioned mobile screw section 31 in the bottom.The valve shaft 24 that the lower end is formed with spool 23 is made of brass, and the center of ground intercalation at valve shaft support 32 can move up and down.
Guiding bindiny mechanism 50 comprises: compression helical spring 51, its to valve shaft 24 apply all the time relative valve shaft support 32 towards the below promptly towards the thrust of valve seat 22 directions; Block piece 52, it is arranged on the valve shaft support 32, and restriction valve shaft 24 moves towards the below; Spheroid 53, its restriction valve shaft 24 moves and allows the level and smooth relative rotation of valve shaft 24 with respect to valve shaft support 32 relative to valve shaft support 32 towards the compression direction of compression helical spring 51.Block piece 52 forms by the tubular lower end edge portion turnup with valve shaft support 32.Block piece 52 also constitutes the anti-avulsion part that prevents that valve shaft 24 from coming off from valve shaft support 32.Owing to have guiding bindiny mechanism 50, be applied in all the time towards the power of closing the valve direction at the spool 23 of the effect lower valve shaft 24 of compression helical spring 51, intermediate flange portion and block piece 52 butts by valve shaft 24 have limited valve shaft 24 to the amount of movement that closes the valve direction.Behind spool 23 and valve seat 22 butts, valve shaft 24 can compress the relative valve shaft support 32 in one side to spring 51 on one side and relatively retreat in the scope of gap stroke.Moving of this direction of retreat of valve shaft 24 is limited owing to spheroid 53 contacts with valve shaft support 32 and valve shaft 24.Spheroid 53 is the contact of rolling with contacting of valve shaft support 32 and valve shaft 24, and Zuo Yong friction between the two is low friction, when valve shaft support 32 is driven by rotor 30 rotations, and can the actual power of eliminating the sense of rotation that passes to valve shaft 24.
Valve shaft 24 is connected by guiding bindiny mechanism 50 with valve shaft support 32, thereby valve shaft 24 and valve shaft support 32 are in the not constraint of sense of rotation around axis, when the switching of valve is especially closed valve events, its rotating force passed to valve shaft 24 hardly when valve shaft support 32 was rotated, and can alleviate or eliminate the stress that produces between spool 23 and the valve seat 22.In addition, lead bindiny mechanism 50 on axial direction, pilot valve bracing strut 32 and valve shaft 24 in predetermined gap stroke range.Therefore, when moving axially in the feeding effect lower edge of screwfeed mechanism during valve shaft support 32 rotation, the stress of generation only acts in the scope that is restricted as the gap stroke between spool 23 and the valve seat 22, can avoid bigger stress.
Valve body 20 is made of metals such as brass, with the end of jar 40 with wait the stepped part that is fixed in the flange shape plate 41 on the valve body 20 to carry out butt welding by welding, thereby valve body 20 is combined with jar 40.But, be not limited to butt welding, also the end of jar 40 flatly can be bent to form towards periphery and be flange shape portion, utilize so-called involutory weldering to fix this lip part and flange shape plate 41.
Action to the mortor operated valve 10 of above-mentioned formation describes below.Lift off a seat 22 open under the valve state of spool 23, in guiding bindiny mechanism 50, valve shaft 24 under the effect of compression helical spring 51 with block piece 52 butts, thereby the position is restricted, spheroid 53 not with valve shaft 24 and valve shaft support 32 both sides butt simultaneously.When not shown stator coil being carried out the energising of direction during excitation, rotor 30, embedding metalwork 36 and valve shaft support 32 are fixed in guide bush 26 rotations on the valve body 20 relatively, the screwfeed mechanism that retaining thread portion 25 by guide bush 26 and the mobile screw section of valve shaft support 32 31 constitute, for example valve shaft support 32 moves towards the below, take a seat with valve seat 22 butts by the spool 23 that guiding bindiny mechanism 50 forms valve shaft 24 tops, valve port is closed.
When making rotor 30 continue rotation under the state that keeps spool 23 close port, valve shaft support 32 is further rotated decline.Valve shaft support 32 valve shafts 24 relative and valve seat 22 butts descend, so the decline of valve shaft support 32 moves through the compression of compression helical spring 51 and is absorbed.Along with the carrying out of rotor 30 rotations, spheroid 53 and valve shaft 24 and valve shaft support 32 both sides while butt, even stator is continued energising, the decline of valve shaft support 32 also is forced to stop.Determine that the rotating amount of rotor 30 of the amount of movement limit of valve shaft support 32 controlled by the umber of pulse of stepping motor.
Spheroid 53 by with valve shaft 24 and valve shaft support 32 both sides simultaneously butt play the effect of block piece.Although a key element as guiding bindiny mechanism 50 in the cavity of spheroid 53 in valve shaft support 32 is configured in the entire axial length of rotor 30, but it is chimeric with guide bush 26 to embed metalwork 36, valve shaft support 32 also is subjected to the guiding of guide bush 26 on top in its rotation, so rotor 30 and the 32 rare big inclinations of valve shaft support, the on-off action of valve is stable.
When stator coil being carried out the energising of another direction during excitation, rotor 30, embedding metalwork 36 and valve shaft support 32 are fixed in guide bush 26 courts and the rotation of above-mentioned opposite direction on the valve body 20 relatively, the screwfeed mechanism that retaining thread portion 25 by guide bush 26 and the mobile screw section of valve shaft support 32 31 constitute, valve shaft support 32 moves towards the top.The spool 23 make valve shaft 24 lower ends that should move by valve shaft support 32 is lifted off a seat and 22 valve port is opened, and refrigeration agent can pass through valve port.Can regulate the throughput of refrigeration agent by the rotating amount of rotor 30, the rotating amount of rotor 30 is limited by umber of pulse, so can carry out correct adjusting.
Like this, rotor 30 rotations, the screwfeed mechanism that retaining thread portion 25 by guide bush 26 and the mobile screw section of valve shaft support 32 31 constitute, valve shaft support 32 and valve shaft 24 are axially sliding, although rotor 30 rotation but axially motionless, so under the electromagnetic action from stator, the rotating force of stepping motor stabilizes to necessarily.And, embedding that the relative guide bush of metalwork 36 26 is rotatable to be guided to chimericly, so rotor 30 is swung for a short time when rotating, can stably rotate.
Other examples of the embedded structure of formed special-shaped axial region on the top 33 that 38a goes up formed irregularly-shaped hole and valve shaft support 32 are divided in the bottom that Fig. 2 represents to embed metalwork 36.In the example shown in Fig. 2 (a), divide the rectangular opening 59a that is formed with on the 38a as irregularly-shaped hole in the bottom.At this moment, formed special-shaped axial region is a axial region with the chimeric rectangular cross-section of rectangular opening 59a on the top 33 of valve shaft support 32.In the example shown in Fig. 2 (b), divide the D shape hole 59b that is formed with on the 38a as irregularly-shaped hole in the bottom.At this moment, the special-shaped axial region of valve shaft support 32 is D oblique crank Zs chimeric with D shape hole 59b.In the example shown in Fig. 2 (c), divide the concavo-convex hole 59c that is formed with on the 38a as irregularly-shaped hole in the bottom.The special-shaped axial region of valve shaft support 32 is concavo-convex axles chimeric with concavo-convex hole 59c.
The following describes other examples of the present invention.Fig. 3 is the longitudinal sectional view of other examples of mortor operated valve of the present invention.This example is compared with above-mentioned example, and the embedding metalwork is different with the configuration of guiding bindiny mechanism 50, so this respect is elaborated, other identical in fact formations is put on identical reference marks, and detailed.
In the mortor operated valve 60 shown in Figure 3, embed metalwork 76 and be the state that band end tube portion 78 covers the outside of guide bushs 66 with the posture of being with end tube portion 78 to be in the top.Therefore, the inner peripheral surface that embeds metalwork 76 outer circumferential face that is directed to lining 66 rotatably guides.By embedding this configuration of metalwork 76, the upper interior portion space free time of guide bush 66, the guiding bindiny mechanism 80 that has in the valve shaft support 32 can utilize this space and dispose.That is, guiding bindiny mechanism 80 is configured in the top of the position that is provided with screwfeed mechanism.The formations of guiding bindiny mechanism 80 itself are compared with guiding bindiny mechanism 50, remove member as the elastic force that supports compression helical spring 51 and are mounted in not variation the collar 81 in the groove on valve shaft 25 circumference.
Be formed with the mobile screw section 31 that the retaining thread portion 25 with guide bush 66 screws on valve shaft support 32, mobile screw section 31 forms the top side tube part 82 of outer screw section with tubular inner face guiding valve shaft 24.By this structure, valve shaft 24 its axial mobile guiding that are subjected to embedding metalwork 76 respectively on top are subjected to the guiding of the top side tube part 82 of guide bush 66 at intermediate portion, thereby can prevent the inclination of valve shaft 24, obtain the on-off action of level and smooth valve.Like this, the situation that is positioned at the rotor below with screwfeed mechanism in the existing mortor operated valve is compared the external diameter that can significantly reduce axial length and valve body 20, realizes the miniaturization of mortor operated valve 60.

Claims (10)

1. a mortor operated valve is characterized in that, comprising: valve body, and the circulation flow is regulated in its spool by being located at the valve shaft tip portion and the valve seat contact separation in the valve chamber; Rotor, its be built in the inside that is installed in the jar on the described valve body and in order to make described spool and described valve seat contact separation by from outside rotation driving; And driving mechanism, its rotation transformation with described rotor is the contact separation action of described spool with respect to described valve seat, described driving mechanism comprises: guide bush, and its configuration direction from described valve body side towards described rotor in described jar is extended and is fixed; Embed metalwork, it is with described rotor is integrated and rotated by described guide bush guiding; The valve shaft support, it is configured in the described guide bush, can not rotate relatively with described embedding metalwork but can on axial direction, relatively move combination; Screwfeed mechanism, it is arranged between described guide bush and the described valve shaft support, will be the moving of described axial direction of described valve shaft support from the rotation transformation of described rotor.
2. mortor operated valve as claimed in claim 1, it is characterized in that, described embedding metalwork be configured as have with the incorporate peripheral portion of described rotor with the band eaves cap shape of tube portion at the bottom of the band that described peripheral portion links to each other, tube portion at the bottom of described band, described embedding metalwork is by described guide bush guiding rotation.
3. mortor operated valve as claimed in claim 2, it is characterized in that, chimeric by the irregularly-shaped hole that forms in the tube portion at the bottom of the described band of the special-shaped axial region that has on the described valve shaft support and described embedding metalwork, the described relatively embedding metalwork of described valve shaft support can not rotate relatively but can relatively move on axial direction.
4. mortor operated valve as claimed in claim 2 is characterized in that, is embedded under the state of described guide bush inside in tube portion at the bottom of the described band, and described embedding metalwork is by described guide bush guiding rotation.
5. mortor operated valve as claimed in claim 2 is characterized in that, is entrenched under the state of described guide bush outside in tube portion at the bottom of the described band, and described embedding metalwork is by described guide bush guiding rotation.
6. mortor operated valve as claimed in claim 1, it is characterized in that described valve shaft support and described valve shaft are by around not having constraint on the sense of rotation of described axis and being connected in the guiding bindiny mechanism of leading on the described axial direction in the scope of predetermined gap stroke.
7. mortor operated valve as claimed in claim 6 is characterized in that, described guiding bindiny mechanism comprises: spring, and it applies the thrust of relative valve shaft support towards described valve seat direction to described valve shaft; Block piece, it is arranged on the described valve shaft support, and limits the release of described valve shaft; Spheroid, it limits described valve shaft and moves and allow the level and smooth relative rotation of valve shaft with respect to described valve shaft support relative to described valve shaft support towards the direction of compressing described spring.
8. mortor operated valve as claimed in claim 6 is characterized in that, the described bindiny mechanism of leading is configured in the bottom of described valve shaft support.
9. mortor operated valve as claimed in claim 6 is characterized in that, the described bindiny mechanism of leading is configured in the top of described valve shaft support.
10. as each described mortor operated valve in the claim 1 to 9, it is characterized in that described screwfeed mechanism comprises the female thread portion that forms on the described guide bush, and the outer screw section that screws with described female thread portion that forms on the described valve shaft support.
CN2007100897924A 2006-03-23 2007-03-22 Electric valve Active CN101042197B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102135204B (en) * 2010-01-26 2015-03-18 株式会社不二工机 Motorized valve
JP6359593B2 (en) * 2016-06-14 2018-07-18 株式会社鷺宮製作所 Motorized valve
KR102045912B1 (en) * 2019-03-06 2019-11-18 정귀현 Flue gas regulator in coke oven
WO2021149019A1 (en) * 2020-01-24 2021-07-29 Padmini Vna Mechatronics Pvt. Ltd. An improved idle air control valve with enhanced efficiency
JP7349415B2 (en) * 2020-07-09 2023-09-22 株式会社鷺宮製作所 Two-stage electric valve and refrigeration cycle system
CN114458773B (en) * 2020-10-21 2024-03-29 盾安环境技术有限公司 Electronic expansion valve
JP7349420B2 (en) 2020-11-27 2023-09-22 株式会社鷺宮製作所 Electric valve and refrigeration cycle system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1467397A (en) * 2002-06-25 2004-01-14 株式会社不二工机 Motor-operated valve
CN2747423Y (en) * 2004-10-28 2005-12-21 浙江三花股份有限公司 Small electronic expansion valve
CN1749607A (en) * 2004-09-17 2006-03-22 株式会社不二工机 Electric valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0694910B2 (en) * 1988-01-14 1994-11-24 株式会社鷺宮製作所 Electric control valve
JP3328530B2 (en) * 1996-12-12 2002-09-24 太平洋工業株式会社 Motorized valve stopper structure
WO2004003414A1 (en) * 2002-06-26 2004-01-08 Chiyoda Kuchokiki Co., Ltd. Motor-operated valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1467397A (en) * 2002-06-25 2004-01-14 株式会社不二工机 Motor-operated valve
CN1749607A (en) * 2004-09-17 2006-03-22 株式会社不二工机 Electric valve
CN2747423Y (en) * 2004-10-28 2005-12-21 浙江三花股份有限公司 Small electronic expansion valve

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JP特开2004-162775A 2004.06.10
JP特开2004-92801A 2004.03.25
JP特开2006-70990A 2006.03.16

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