CN100507323C - Electric valve - Google Patents
Electric valve Download PDFInfo
- Publication number
- CN100507323C CN100507323C CNB2005100554376A CN200510055437A CN100507323C CN 100507323 C CN100507323 C CN 100507323C CN B2005100554376 A CNB2005100554376 A CN B2005100554376A CN 200510055437 A CN200510055437 A CN 200510055437A CN 100507323 C CN100507323 C CN 100507323C
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- Prior art keywords
- valve
- mentioned
- sleeve
- holding member
- rotor
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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
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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
- 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
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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
- 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
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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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
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention provides an electric valve comprising a valve stem of a valve body, a valve main body provided with a valve seat which can be connected with and separated form the valve body, a sleeve connected with the valve main body, a rotor arranged at the inner circumference of the sleeve, a stator arranged at the outer circumference of the sleeve in a way of rotating to drive the rotor, a guidance part held and fixed on the valve main body, a cylindrical part guiding the valve stem, and a screw thread transmission mechanism arranged between the rotor and the valve body. The valve seat is connected with and separated from the valve body with the rotation of the rotor, the valve main body is composed of the valve seat part produced through cutting; a cylindrical valve chamber forming part which is produced through stamping and is provided with a flange shaped part supported by the sleeve; and a connection holding part produced through stamping, the outer circumferential side of the sleeve is welded on the flange shaped part supported by the sleeve of the valve chamber forming part in a overlapped way, and the guidance part is held and fixed on the inner circumferential side of the sleeve.
Description
Technical field
The mortor operated valve that the present invention relates to be assembled in air conditioner, the refrigerator etc. and use, in particular, the present invention relates to following mortor operated valve, in this mortor operated valve, valve body partly adopts the punch process part, so that the cost of cutback valve main body, and can make rotary system constituent elements (rotor, valve body, sleeve, valve rod, guide element etc.) guarantee higher coaxality.
Background technique
Fig. 6 represents the existing example of this mortor operated valve.Illustrated mortor operated valve 9 comprises valve body 20, and this valve body 20 comprises the valve chamber valve seat formation parts 20A cylindraceous of the band stepped part that forms valve chamber 21, valve seat 22 (valve port 22a) and circular flange shape sleeve support unit 23 etc.This valve body 20 can be by engaging the valve body 24a (valve rod 24) that leaves with valve seat 22, regulate refrigeration agent etc. fluid pass through flow, form at the valve chamber valve seat of making by cutting on the top stage portion 20a of parts 20A, the fixing flange shape sleeve support unit of making by cutting or punch process 23, on this flange shape sleeve support unit 23 (stepped part 23a formed thereon), the bottom 40b (also with reference to Fig. 7) of sleeve 40 of the band round-ended cylinder shape of lower opening is arranged by butt joint welding manner sealing engagement.
In a side of the valve chamber 21 of above-mentioned valve body 20, be fixedly connected with the 1st conduit 41 of refrigeration agent turnover usefulness by modes such as welding, below valve chamber 21, be fixedly connected with the 2nd conduit 42 of refrigeration agent turnover usefulness.
In the interior week of above-mentioned sleeve 40, be provided with rotor 30 with specified gap, drive the mode of this rotor 30 according to rotation, periphery at above-mentioned sleeve 40, setting is by yoke 51, coil rack 52, stator coil 53,53 and the stator 50 that forms such as resin molded outer cover 56, constitute stepper motors by above-mentioned rotor 30 and stator 50.
In addition, between rotor 30 and valve rod 24, be provided with the rotation that utilizes rotor 30, make above-mentioned valve body 24a engage the driving mechanism that leaves usefulness with above-mentioned valve seat 22.This driving mechanism constitutes screw thread conveyer 15, this screw thread conveyer 15 is by the guide element 26 of tubular (periphery formed retaining thread portion 25), and lower opening have round-ended cylinder shape valve rod keep body 32 (interior week place form, the movable whorl portion 31 that screws togather with said fixing screw section 25) constitutes, the bottom 26a of this guide element 26 is pressed into and is fixed in the embedding hole 28 that is opened in the valve body 20, above-mentioned valve rod 24 is inserted in slidably in this guide element 26, and this valve rod keeps body 32 to be arranged at the periphery of above-mentioned valve rod 24 and guide element 26.
More particularly, the bottom position of valve rod holding part 32 is inserted at the top of valve rod 24 in the mode of moving about, in its tip portion, be fixed with nut part 33, by above-mentioned screw thread conveyer 15, valve rod keeps body 32 rotations, realize lifting simultaneously, at this moment, valve rod 24 is followed this action and lifting (when valve body 24a is pressed against on the valve seat 22 in supporting, not rotation jointly).
In the mortor operated valve 9 of such scheme, if leave the state (valve port 22a is an open mode) of (rising) at valve body 24a and valve seat 22, stator coil 53,53 is carried out unidirectional energising, carry out excitation, the guide element 26 of relative fixed on valve body 20 then, rotor 30 and valve rod keep body 32 to rotate along a direction, and by above-mentioned screw thread conveyer 15, valve rod keeps body 32 to descend, valve body 24a supporting is pressed against on the valve seat 22, and 22a closes with valve port.
Be supported on moment on the valve seat 22 at valve body 24a, being arranged at valve rod keeps the movable retainer 37 of the bottom of body 32 not contact with the fixed stop portion 27 of being fixed in valve body 20 sides as yet, state at valve body 24a close port 22a, rotor 30 and valve rod maintenance body 32 also in rotation, are realized descending.At this moment, because relative valve rod 24, valve rod keeps body 32 to descend, and is compressed so be arranged at the helical spring 34 of the buffering usefulness between valve rod maintenance body 32 and the valve rod 24, thus, the valve body 24a of valve rod 24 is pressed on the valve seat 22 complete closed (full cut-off) forcibly.
Then, if rotor 30 is further rotated, valve rod keeps body 32 to descend, and then movable retainer 37 contacts with fixed stop portion 27, continues stator spring 53,53 is switched on, even in this case, still stops rotation and decline that valve rod keeping body 32 forcibly.
If from this halted state, to stator spiral 53,53 carry out the energising of other direction, carry out excitation, then relative guide element 26, rotor 30 and valve rod keep body 32 along rotating with above-mentioned opposite direction, by above-mentioned screw thread conveyer 15, this time, valve rod keeps body 32 to rise, valve body 24a and valve seat 22 leave, open valve port 22a, the refrigeration agent of sending into valve chamber 21 from the 1st conduit 41 flows to the 2nd conduit 42, corresponding to the ascending amount of valve body 24a by valve port 22a, that adjusts refrigeration agent quantitatively passes through flow (specifically, with reference to following patent documentation 1 etc.).
Patent documentation 1:JP spy opens document 2001-No. 50415
Summary of the invention
For the mortor operated valve 9 in past as described above, people wish to require the cost of cutback valve main body 20 parts.That is, the major component in valve body 20 parts in past (the valve chamber valve seat forms parts 20A) is made into single part by cutting, so have undesirable situation that component costs rises.So, people consider following mode, promptly, valve body partly is divided into several parts, the valve seat part that is difficult to make by punch process is for passing through shape, the size that cutting is made easily, and other part is divided into several parts, makes by the punch process that manufacture cost is lower, then, they are assembled.But the occasion at parts employing punch process part has the problem of the processing assembly precision of these parts.
Promptly, must make rotary system constituent elements (rotor 30, valve body 20, sleeve 40, valve rod 24, guide element 26, valve rod maintenance body 32 etc.) guarantee higher coaxality, promptly, must not make these spin axiss or central axis produce dislocation (make each axis consistent) with common axes O, if the processing assembly precision of rotary system constituent elements is lower, then produce and to form required coaxality, produce sleeve 40 and rotor 30 frictions, or the situations such as surface friction drag increase of slipping part of valve rod 24 and guide element 26, performance, reductions such as durability, so by several component-assembled valve bodies, and then the occasion of assembling mortor operated valve integral body, importantly how to make the rotary system constituent elements guarantee higher coaxality.
The present invention be directed to such situation proposes, the object of the present invention is to provide a kind of mortor operated valve, wherein, valve body part adopts the punch process part, so that the cost of cutback valve main body, and can make rotor as the rotary system constituent elements, valve body, sleeve, valve rod, guide element etc. guarantee higher coaxality.
To achieve these goals, mortor operated valve of the present invention consists essentially of the valve rod with valve body; Have above-mentioned valve body and engage the valve body of the valve seat that leaves; The sleeve that engages with above-mentioned valve body; Be arranged at the rotor in the interior week of this sleeve; Be arranged at the stator of the periphery of above-mentioned sleeve according to the mode of this rotor of rotation driving; Guide element, this guide element remains secured on the above-mentioned valve body, has the cylindric portion that above-mentioned valve rod is led; The screw thread conveyer, this screw thread conveyer is arranged between above-mentioned rotor and the above-mentioned valve body, utilizes the rotation of above-mentioned rotor, above-mentioned valve body is engaged with above-mentioned valve seat leave.
It is characterized in that above-mentioned valve body is by the valve base part of making by cutting, the valve chamber of making by punch process, have sleeve support lug shape portion cylindraceous forms parts and connects holding member and constitutes, this connection holding member by punch process make, outer circumferential side forms in the sleeve support lug shape portion of parts to carry the mode welding joint in above-mentioned valve chamber, in interior all sides, be maintained fixed above-mentioned guide element.
According to a preferred form, above-mentioned connection holding member is the band round-ended cylinder shape of flanged pin shape portion, its by be intercalated in above-mentioned valve chamber form the interior week of parts cylindrical part, forms flange shape portion in top side in the sleeve support lug shape portion of parts and the bottom formation with holes that is used to be maintained fixed above-mentioned guide element in above-mentioned valve chamber to carry the mode welding joint.
In addition, according to another preferred form, it is tabular that above-mentioned connection holding member is annulus.
In addition, according to the preferred form of going back, the external diameter of above-mentioned connection holding member or its flange shape portion in top side forms the external diameter of the sleeve support lug shape portion of parts less than above-mentioned valve chamber, by above-mentioned sleeve support lug shape portion and the above-mentioned holding member that is connected, or the stepped part of flange shape the formation in its top side, by the bottom of the above-mentioned sleeve of butt joint welding manner sealing engagement.
According to a preferred form also, in the interior perimembranous of above-mentioned connection holding member, be fixed or welding joint has above-mentioned guide element, perhaps above-mentioned guide element is integrally formed by punch process with the above-mentioned holding member that is connected.
According to a preferred form again, form hole in the parts by being formed at above-mentioned valve chamber, insert in the above-mentioned valve chamber end of the conduit of refrigeration agent turnover usefulness, and an above-mentioned end contacts with above-mentioned valve base part.
In mortor operated valve of the present invention, valve body partly is divided into several parts, the part (valve seat part) that forms complicated shape is for the shape that can make by cutting easily, as size, other part is divided into can carry out punch process easily, guarantee the parts of high-precision shape, make, then, they are assembled, thus, the cost of cutback valve main body makes rotor as the rotary system constituent elements, valve body, sleeve, valve rod, guide element etc. obtain required coaxality.
Particularly, valve chamber forms parts and is the cylindric of flanged pin shape portion, connect holding member and be the cylindric of flanged pin shape portion, it forms the cylindrical part in the interior week of parts by being intercalated in above-mentioned valve chamber, to carry the top side flange shape portion of mode welding joint in the sleeve support lug shape portion of valve chamber formation parts, and the bottom formation with holes that is used to be maintained fixed above-mentioned guide element, in addition, by the butt joint welding, form parts by valve chamber and be connected the stepped part that holding member forms, the bottom of coupling spool, thus, can make the spin axis of whole rotary system constituent elementss and central axis can produce dislocation hardly, can make them guarantee higher coaxality, thus, reduce the surface friction drag that part produces that slips at the rotary system constituent elements, consequently, performance, raisings such as endurance quality.
In addition, form hole in the parts by being formed at valve chamber, insert in the valve chamber end that refrigeration agent is passed in and out the conduit of usefulness, and an above-mentioned end contact with above-mentioned valve base part, carries out the location of conduit easily, and the also raisings such as operation of conduit when welding.
Description of drawings
Fig. 1 is an embodiment's of expression mortor operated valve of the present invention longitudinal sectional view;
Fig. 2 is the part enlarged view of expression valve body shown in Figure 1;
Fig. 3 is another embodiment's of expression mortor operated valve of the present invention longitudinal sectional view;
Fig. 4 constitutes rotation restriction the fixed stop portion (A) of stop mechanism and the figure of movable retainer (B) of mortor operated valve shown in Figure 3 for expression;
The figure that Fig. 5 uses with the action specification of stop mechanism for the rotation restriction of mortor operated valve shown in Figure 4;
Fig. 6 is the longitudinal sectional view of an example of expression mortor operated valve in the past;
Fig. 7 is the part enlarged view of valve body shown in Figure 6.
Embodiment
With reference to the accompanying drawings, embodiments of the invention are described.
Fig. 1 is an embodiment's of expression mortor operated valve of the present invention longitudinal sectional view.The mortor operated valve 10 of present embodiment is identical with aforesaid mortor operated valve shown in Figure 69, comprise have valve chamber 71, the valve body 70 of valve seat 72 (valve port 72a).This valve body 70 is formed parts 74 and is connected holding member 76 by valve base part 72 and valve chamber and constitutes (will be explained hereinafter), this valve base part 72 is made by cutting, has valve port 72a, this valve chamber forms parts 74 and makes by punch process, be and have the cylindric of the sleeve support lug shape 74a of portion, this connects holding member 76 and makes by punch process, be the cylindric of the flanged pin shape 76b of portion, can be by engaging the valve body 24a (valve rod 24) that leaves with valve seat 72, adjust refrigeration agent etc. fluid pass through flow.In addition, form at above-mentioned valve chamber on the sleeve support lug shape 74a of portion of parts 74, by butt joint welding (weld part K), sealing and engage the bottom 40b (also with reference to Fig. 2) of sleeve 40 of the band round-ended cylinder shape of lower opening.
In a side of the valve chamber 71 of above-mentioned valve body 70, be fixedly connected with the 1st conduit 41 of refrigeration agent turnover usefulness by modes such as welding, in addition, below valve chamber 71, be fixedly connected with the 2nd conduit 42 that refrigeration agent passes in and out usefulness by modes such as welding.In this occasion, form hole 74c in the parts 74 by being formed at valve chamber, the inside of valve chamber 71 is inserted in an end of the 1st conduit 41, and an above-mentioned end contacts with stepped part 72b in being formed at valve base part 72.
In the interior week of above-mentioned sleeve 40, according to mode with predetermined gap, rotor 30 is set, periphery at above-mentioned sleeve 40, be provided with the stator 50 that forms by yoke 51, coil rack 52 and stator coil 53,53 and resin molded outer cover 56 etc., so that rotation drives this rotor 30, by above-mentioned rotor 30 and said stator 50, constitute stepper motor.
In addition, between rotor 30 and valve rod 24, be provided with driving mechanism, this driving mechanism utilizes the rotation of rotor 30, above-mentioned valve body 24a is engaged with above-mentioned valve seat 72 leave.This driving mechanism constitutes screw thread conveyer 15, this screw thread conveyer 15 is by the guide element 80 (periphery formed retaining thread portion 25) of the tubular of band stepped part, and the valve rod of the band round-ended cylinder shape of lower opening keep body 32 (interior week formed, the movable whorl portion 31 that screws togather with said fixing screw section 25) forms, this guide element 80 remains secured on the connection holding member 76 of above-mentioned valve body 70, in this guide element 80, be inserted with valve rod 24 slidably, this valve rod keeps body 32 to be arranged at the periphery of above-mentioned valve rod 24 and guide element 80.
More particularly, the minimum point that valve rod keeps body 32 is inserted in the mode of moving about in the top of valve rod 24, in its tip portion, be fixed with nut part 33, if by above-mentioned screw thread conveyer 15, valve rod keeps body 32 in rotation, realize lifting, then valve rod 24 is followed this motion, realizes lifting (when valve body 24a supporting is pressed against on the valve seat 72, not rotation jointly).
In addition, above-mentioned valve rod 24 is being setovered downwards at ordinary times by the helical spring 34 of the buffering usefulness between the intermediate step portion of the bottom position that is installed on valve rod with compress mode and keeps body 32 and valve rod 24.In the side of guide element 80, form the balancing orifice 82a of the uniform pressure in valve chamber 71 and the realization sleeve 40.
Lowest part at valve rod maintenance body 32 is provided with the recovery spring 35 that is formed by helical spring.When this recovery spring 35 is thrown off according to screwing togather of the movable whorl portion 31 that keeps body 32 at the retaining thread portion 25 of guide element 80 and valve rod, contact, make retaining thread portion 25 and movable whorl portion 31 screw togather the mode effect of recovery with the inner face of sleeve 40.
Valve rod keeps body 32 to be connected by supporting ring 36 with rotor 30, and this supporting ring 36 is formed by the brazen metal ring that embeds when rotor 30 is shaped in the present embodiment.On supporting ring 36, be fixed with the top teat that valve rod keeps body 32 to compress mode, thus, rotor 30, supporting ring 36 and valve rod maintenance body 32 are integral and are connected.
Than large-diameter portion 80a, be fixed with one fixed stop portion 27 of the stop mechanism that constitutes rotation restriction usefulness in the bottom of guide element 80, keep being fixed with another person's who constitutes stop mechanism movable retainer 37 on the body 32 at valve rod.
Here, in the present embodiment, connection holding member that the valve chamber that constitutes valve base part 72 valve body 70, that make by cutting, makes by punch process forms parts 74, make by identical punch process 76 is made by stainless steel, in above-mentioned valve base part 72, be pressed into the cylindric bottom that valve chamber forms parts 74, fix by modes such as welding.Thus, make valve base part 72 and valve chamber form parts 74 and obtain higher coaxality.
Also have, above-mentioned connection holding member 76 in Fig. 2 with shown in the amplification mode, bottom 76c by cylindrical part 76a, flange shape the 76b in top side and 76d with holes constitutes, this cylindrical part 76a is intercalated in the interior week that above-mentioned valve chamber forms parts 74, the sleeve support lug shape 74a of portion that flange shape the 76b in this top side is equipped on valve chamber formation parts 74 goes up and welding joint, this bottom 76c compresses the mode of processing by the bottom (thin cylindrical part) 82 to above-mentioned guide element 80, be connected with above-mentioned guide element 80, keep this guide element 80.Any position in the bottom surface of flange shape the 76b in the top side of above-mentioned connection holding member 76 (or above-mentioned valve chamber forms the end face of parts 74) is formed with and is convenient to the projection 76e that welding joint is used.On valve chamber formation parts 74, engage when connecting holding member 76, form the interior week of parts 74 at valve chamber, intercalation (being pressed into) connects the cylindrical part 76a of holding part 76, and on the sleeve support lug shape 74a of portion, carry and press flange shape the 76b in top side (above-mentioned teat 76e nips) that connects holding member 76, state in pressurization protrudes welding.Thus, with higher coaxality, valve chamber formed parts 74 and be connected holding member 76 engage, in addition, the coaxality of they and guide element 80 also increases.
In addition, in the present embodiment, the external diameter that connects flange shape the 76b in top side of holding member 76 forms the external diameter of the sleeve support lug shape 74a of portion of parts 74 less than valve chamber, on the stepped part 73 that forms by this sleeve support lug shape 74a of portion and flange shape the 76a in top side, the bottom 40b of sealing engagement sleeve 40 by butt joint welding (weld part K).Thus, not only the central axis at sleeve 40 forms parts 74 with the valve base part 72 that constitutes valve body 70, valve chamber, and connect between the central axis of holding member 76, and between the central axis of the central axis of sleeve 40 and guide element 80, produce dislocation hardly, in addition, keep body 32 at interior valve rod 24, the valve rod that inserts in the guide element 80, and then also produce dislocation between the axis of rotor 30 hardly, make whole rotary system constituent elementss obtain higher coaxality (common axes O).
In the mortor operated valve 10 of such scheme, if leave the state (valve port 72a is in open mode) of (rising) at valve body 24a and valve seat 72, stator coil 53,53 is carried out the energising of a direction, carry out excitation, then remain secured to the guide element 80 on the connection holding member 76 of valve body 70 relatively, rotor 30 and valve rod keep body 32 to rotate along a direction, and by above-mentioned screw thread conveyer 15, valve rod keeps body 32 to descend, valve body 24a supporting is pressed against on the valve seat 72, and 72a closes with valve port.
When valve body 24a is supported on the valve seat 72, being arranged at valve rod keeps the movable retainer 37 of the bottom of body 32 not contact with the fixed stop portion 27 of being fixed in valve body 70 sides as yet, at the state of valve body 24a close port 72a, rotor 30 and valve rod keep body 32 to be further rotated, and descend simultaneously.At this moment, because relative valve rod 24, valve rod keeps body 32 to descend, so will be arranged at helical spring 34 compressions that valve rod keeps the buffering usefulness between body 32 and the valve rod 24, thus, the valve body 24a with valve rod 24 presses on the valve seat 72 forcibly, makes it close (complete shut-down) fully.
Then, if rotor 30 is further rotated, valve rod keeps body 32 to descend, and then movable retainer 37 contacts with fixed stop portion 27, and stator coil 53,53 is continued charging, even in this case, still makes valve rod keep the rotation and the decline of body 32 to stop forcibly.
If from this halted state, to stator coil 53,53 carry out the energising of other direction, carry out excitation, then relative guide element 80, rotor 30 and valve rod keep body 32 along the direction rotation opposite with above-mentioned occasion, by above-mentioned screw thread conveyer 15, this time, valve rod keeps body 32 to rise, valve body 24a and valve seat 72 leave, open valve port 72a, the refrigeration agent of sending into valve chamber 71 from the 1st conduit 41 flows out to the 2nd conduit 42 by valve port 72a, corresponding to the ascending amount of valve body 24a, adjust the flow that passes through of refrigeration agent quantitatively.
Describe as the front, in the mortor operated valve 10 of present embodiment, valve body 70 parts are divided into 3 parts, promptly, be divided into valve base part 72, valve chamber forms parts 74 and is connected holding member 76, valve base part 72 is can be by the easy shape of making of cutting, size, other part (valve chamber forms parts 74 and is connected holding member 76) is divided into and carries out punch process easily, can guarantee higher processing assembly precision shape (flanged pin shape portion cylindric) parts and make, then, these parts are assembled, like this, realize the reduction of the cost of valve body part, make rotary system constituent elements (valve body 70, sleeve 40, rotor 30, valve rod 24, guide element 80 etc.) obtain required coaxality.
Particularly, valve chamber forms parts 74 and is the cylindric of flanged pin shape portion, connect holding member 76 and be the cylindric of flanged pin shape portion, it is by cylindrical part 76a, the bottom 76c of flange shape 76b in top side and 76d with holes constitutes, this cylindrical part 76a is intercalated in the interior week that valve chamber forms parts 74, the sleeve support lug shape 74a of portion that flange shape the 76b in this top side is equipped on valve chamber formation parts 74 goes up and welding joint, this bottom 76c is maintained fixed guide element 80, in addition, on forming parts 74 by valve chamber and being connected the stepped part 73 that holding member 76 forms, by the butt joint welding, the bottom 40b of coupling spool 40, thus, can be between the spin axis and central axis of whole rotary system constituent elementss, produce dislocation hardly, can make them guarantee higher coaxality, thus, the surface friction drag that slips the part generation at the rotary system constituent elements be reduced, consequently, performance, endurance qualities etc. all improve.
In addition, by being formed at the hole 74c in the above-mentioned valve chamber formation parts 74, the inside that above-mentioned valve chamber 71 is inserted in one end of the 1st conduit 41, and an above-mentioned end is contacted with the stepped part 72b of above-mentioned valve base part 72, thus, carry out the location of the 1st conduit 41 easily, and the operation of the welding of conduit 41 fixedly time the etc. improves also.
Fig. 3 represents another embodiment of mortor operated valve of the present invention.In Fig. 3, for the corresponding part of each several part of aforesaid mortor operated valve 10 shown in Figure 1, adopt same label, the repetitive description thereof will be omitted, emphasis is described difference below.
In the present embodiment, by nut part 62, be connected with valve rod 60 according to the mode that can be integral rotation and one lifting on rotor 30, valve rod 60 and valve body 61 are discrete items.Specifically, the valve body 61 of discrete item is at valve rod 60 relatively, carries out axial relatively move and counterrotating state is intercalated in the cylindrical portion 60 of the bottom that is formed at above-mentioned valve rod 60.The collar 66 of bottom compressed part (the thin cylindrical part) 60c of this valve body 61 by being fixed in above-mentioned cylindrical portion 60b is in case the mode buckle of throwing off.In the inside of above-mentioned cylindrical portion 60b, the helical spring 64 of the buffering usefulness that valve body 61 is setovered is installed by ball 65 downwards with compress mode.
In addition, be provided with and be used to make above-mentioned valve body 61 to engage the screw thread conveyer 16 that leaves with above-mentioned valve seat 22, this screw thread conveyer 16 is made of retaining thread portion 28 and movable whorl portion 29, this retaining thread portion 28 is formed at interior week of interior threaded part 82 of being fixed in the top of the guide element 80 ' that is formed by cylindrical duct in embedded mode, this movable whorl portion 29 is formed at the periphery of the first half 60a of above-mentioned valve rod 60, screws togather with said fixing screw section 28.So, in the mortor operated valve 11 of present embodiment,, then be integral ground with it if make rotor 30 rotations, make valve rod 60 rotations, at this moment, by above-mentioned screw thread conveyer 16, valve rod 60 is followed valve body 61 and lifting, thus, adjusts the flow that passes through of refrigeration agent.
In addition, on the periphery of above-mentioned guide element 80 ', be embedded with outward to constitute and rotate fixed stop portion 68 and the movable retainer (slider) 69 of restriction with stop mechanism.Fixed stop portion 68 for resemble shown in Fig. 4 (A), number of active coils is 5.5 (5 circles half), the direction of reeling is a helical spring (shape is with the line bending in the shape of a spiral) to the right, its tip portion forms from the top side clamping part 68a that spiral part is bent upwards, and its bottom forms from spiral part towards reclinate bottom side clamping part 68b.In addition, movable retainer 69 for resemble shown in Fig. 4 (B), number of active coils is 1.5 (1 circles half), coiling direction is a helical spring (shape is with the line bending in the shape of a spiral) to the right, its tip portion forms from the spiral bulk-breaking and gives prominence to contacting part 69a to the side of side bending, and the bottom of spiral part (end) constitutes the end face contacting part 69b that is formed at tabular surface.
Slightly greater than the diameter as the wire rod of the material of fixed stop portion 68, still, the pitch of movable retainer 69 is identical with the pitch of fixed stop portion 68 as the diameter of the wire rod of the material of movable retainer 69.Fixed stop portion 68 (bottom side clamping part 68b) is fixed on the guide element 80 ', and movable retainer 69 is assembled on the spiral part of fixed stop portion 68 as shown in Figure 5, can realize lifting in the spiral part rotation.
The outstanding contacting part 69a in the side of movable retainer 69 is by when rotor 30 rotations (any one in when just changeing, when reversing), be based in rotor 30 interior week lengthwise slurcocks 39 and promote.So, at rotor 30 during around the rotation of the clockwise direction seen from the plane, movable retainer 69 rotates along equidirectional, descend simultaneously, finally, the position that drops in Fig. 5 is as shown in the solid line, and end face contacting part 69b contacts with the bottom side clamping part 68b of fixed stop portion 68 and realize buckle, thus, stop rotor 30 rotations and decline forcibly.When rotor rotates along the counter clockwise direction of seeing from the plane, movable retainer 69 rotates along equidirectional, rise simultaneously, finally, the position of rising most among Fig. 5 is as by shown in the imaginary line, and the outstanding contacting part 69a in side contacts with the top side clamping part 68a of fixed stop portion 68, the realization buckle, thus, force to stop the rotation and the rising of rotor 30.
On the other hand, in the present embodiment, valve body 70 forms parts 74 by its structure valve base part 72 and the valve chamber identical with the above embodiments, and the be connected holding members 76 ' different with aforesaid embodiment with its structure constitute.The connection holding member 76 ' of present embodiment is pure Circular Plate, peripheral part is equipped on above-mentioned valve chamber and forms on the sleeve support lug shape 74a of portion of parts 74, according to mode welding joint same as the previously described embodiments, interior perimembranous is connected and fixed on the bottom of above-mentioned guide element 80 ' by welding.In this occasion, owing on the connection holding member 76 ' of present embodiment, do not have the foregoing description cylindrical part 76a such, that be intercalated in the interior week of valve chamber formation parts 74, so when welding joint is on valve chamber formation parts 74, adopt anchor clamps etc. and position, can improve coaxality.
In addition, connecting on the holding member 76 ', forming the balancing orifice of realizing in valve chamber 71 and the sleeve 40 77 of all pressing.In addition, same as the previously described embodiments, the external diameter that connects holding member 76 ' forms the external diameter of the sleeve support lug shape 74a of portion of parts 74 less than valve chamber, by the sleeve support lug shape 74a of portion be connected the stepped part 73 that holding member 76 ' (peripheral end face) forms, by the bottom 40b of butt joint welding (weld part K) mode sealing engagement sleeve 40.
Same in the mortor operated valve 11 of such scheme, can obtain and the essentially identical action effect of the foregoing description, realize the cost cutting of valve body part, do not have in can previous embodiment but fully degree guarantee the coaxality of rotary system constituent elements.
In addition, be the occasion of cylinder tubulose, can pass through punch process, be integrally formed this guide element and be connected holding member at guide element.Like this, can be by being integrally formed guide element and being connected holding member, further cutting down cost is guaranteed higher coaxality.
Claims (7)
1. mortor operated valve, this mortor operated valve comprises the valve rod with valve body; Have above-mentioned valve body and engage the valve body of the valve seat that leaves; The sleeve that engages with above-mentioned valve body; Be arranged at the rotor in the interior week of this sleeve; Be arranged at the stator of the periphery of above-mentioned sleeve according to the mode of rotation driving rotor; Guide element, this guide element remains secured on the above-mentioned valve body, has the cylindric portion that above-mentioned valve rod is led; The screw thread conveyer, this screw thread conveyer is arranged between above-mentioned rotor and the above-mentioned valve body, utilize the rotation of above-mentioned rotor, above-mentioned valve body is engaged with above-mentioned valve seat to be left, it is characterized in that above-mentioned valve body is by the valve base part of making by cutting, and make by punch process, the valve chamber cylindraceous that has sleeve support lug shape portion forms parts, and the connection holding member constitutes, this connection holding member is made by punch process, form in the sleeve support lug shape portion of parts at this outer circumferential side that connects holding member in above-mentioned valve chamber to carry the mode welding joint, in this interior all side that connect holding member, be maintained fixed above-mentioned guide element.
2. mortor operated valve according to claim 1, it is characterized in that above-mentioned connection holding member is the band round-ended cylinder shape of flanged pin shape portion, its by be intercalated in above-mentioned valve chamber form the interior week of parts cylindrical part, forms flange shape portion in top side in the sleeve support lug shape portion of parts and the bottom formation with holes that is used to be maintained fixed above-mentioned guide element in above-mentioned valve chamber to carry the mode welding joint.
3. mortor operated valve according to claim 1, it is tabular to it is characterized in that above-mentioned connection holding member is annulus.
4. according to each described mortor operated valve in the claim 1～3, it is characterized in that the external diameter of above-mentioned connection holding member or its flange shape portion in top side forms the external diameter of the sleeve support lug shape portion of parts less than above-mentioned valve chamber, by above-mentioned sleeve support lug shape portion and above-mentioned flange shape the stepped part that forms of holding member or its top side that be connected, by the bottom of the above-mentioned sleeve of butt joint welding manner sealing engagement.
5. according to each described mortor operated valve in the claim 1～3, it is characterized in that interior perimembranous, be fixed or welding joint has above-mentioned guide element at above-mentioned connection holding member.
6. according to each described mortor operated valve in the claim 1～3, it is characterized in that above-mentioned guide element is integrally formed by punch process with the above-mentioned holding member that is connected.
7. according to each described mortor operated valve in the claim 1～3, it is characterized in that insert in the above-mentioned valve chamber one end of the conduit of refrigeration agent turnover usefulness by being formed at the hole in the above-mentioned valve chamber formation parts, an above-mentioned end contacts with above-mentioned valve base part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004272341A JP4612377B2 (en) | 2004-09-17 | 2004-09-17 | Motorized valve |
| JP272341/2004 | 2004-09-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749607A CN1749607A (en) | 2006-03-22 |
| CN100507323C true CN100507323C (en) | 2009-07-01 |
Family
ID=36162673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100554376A Expired - Fee Related CN100507323C (en) | 2004-09-17 | 2005-03-17 | Electric valve |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4612377B2 (en) |
| KR (1) | KR101165317B1 (en) |
| CN (1) | CN100507323C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482274A (en) * | 2014-10-28 | 2015-04-01 | 珠海格力电器股份有限公司 | Electronic expansion valve |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4762018B2 (en) * | 2006-03-23 | 2011-08-31 | 株式会社不二工機 | Motorized valve |
| JP2008101765A (en) * | 2006-09-20 | 2008-05-01 | Fuji Koki Corp | Motorized valve |
| JP5164579B2 (en) * | 2008-01-10 | 2013-03-21 | 株式会社不二工機 | Motorized valve and its assembly method |
| JP5106135B2 (en) * | 2008-01-10 | 2012-12-26 | 株式会社不二工機 | Reversible flow control valve |
| JP5342951B2 (en) * | 2009-07-23 | 2013-11-13 | 株式会社不二工機 | Motorized valve |
| WO2012048659A1 (en) * | 2010-10-15 | 2012-04-19 | 浙江三花股份有限公司 | Electrical valve |
| CN102454818A (en) * | 2010-10-15 | 2012-05-16 | 浙江三花股份有限公司 | Electric valve |
| JP5400122B2 (en) * | 2011-10-27 | 2014-01-29 | 株式会社鷺宮製作所 | Motorized valve |
| CN105443841B (en) * | 2014-06-09 | 2018-06-05 | 浙江三花智能控制股份有限公司 | A kind of pilot-operated type control valve and multi-connected air conditioner |
| JP6270650B2 (en) * | 2014-07-18 | 2018-01-31 | 株式会社鷺宮製作所 | Motorized valve |
| JP6214487B2 (en) * | 2014-07-18 | 2017-10-18 | 株式会社鷺宮製作所 | Motorized valve |
| JP6214488B2 (en) * | 2014-07-18 | 2017-10-18 | 株式会社鷺宮製作所 | Motorized valve |
| JP6501609B2 (en) * | 2015-05-20 | 2019-04-17 | 株式会社不二工機 | Motor-operated valve and method of assembling the same |
| JP6240243B2 (en) * | 2016-03-07 | 2017-11-29 | 株式会社鷺宮製作所 | Motorized valve and motorized valve manufacturing method |
| JP6753789B2 (en) * | 2017-01-25 | 2020-09-09 | 株式会社鷺宮製作所 | Solenoid valve and refrigeration cycle system |
| JP2018021671A (en) * | 2017-09-13 | 2018-02-08 | 株式会社鷺宮製作所 | Electric valve |
| JP6503033B2 (en) * | 2017-09-19 | 2019-04-17 | 株式会社鷺宮製作所 | Motorized valve |
| JP6621793B2 (en) * | 2017-11-20 | 2019-12-18 | 株式会社不二工機 | Motorized valve |
| JP6772210B2 (en) * | 2018-03-28 | 2020-10-21 | 株式会社不二工機 | Solenoid valve |
| WO2020230382A1 (en) * | 2019-05-15 | 2020-11-19 | 株式会社不二工機 | Flow control valve |
| JP7106154B2 (en) * | 2020-05-27 | 2022-07-26 | 株式会社不二工機 | electric valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60179581A (en) * | 1984-02-27 | 1985-09-13 | Taiheiyo Kogyo Kk | Motor-operated valve easy for reverse starting |
| JP4224187B2 (en) * | 1999-06-02 | 2009-02-12 | 株式会社不二工機 | Motorized valve |
| JP4442788B2 (en) * | 2000-11-15 | 2010-03-31 | 株式会社鷺宮製作所 | Motorized valve |
| JP4786834B2 (en) * | 2001-09-03 | 2011-10-05 | 株式会社鷺宮製作所 | Motorized valve |
| JP4220178B2 (en) * | 2001-09-03 | 2009-02-04 | 株式会社鷺宮製作所 | Motorized valve |
| JP4004272B2 (en) * | 2001-11-09 | 2007-11-07 | 日本電産サンキョー株式会社 | Valve opening / closing drive device |
| JP2004183756A (en) * | 2002-12-02 | 2004-07-02 | Fuji Koki Corp | Electric operated valve |
-
2004
- 2004-09-17 JP JP2004272341A patent/JP4612377B2/en active Active
-
2005
- 2005-03-15 KR KR1020050021300A patent/KR101165317B1/en active IP Right Grant
- 2005-03-17 CN CNB2005100554376A patent/CN100507323C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482274A (en) * | 2014-10-28 | 2015-04-01 | 珠海格力电器股份有限公司 | Electronic expansion valve |
| CN104482274B (en) * | 2014-10-28 | 2016-09-14 | 珠海格力电器股份有限公司 | Electric expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4612377B2 (en) | 2011-01-12 |
| CN1749607A (en) | 2006-03-22 |
| KR20060043634A (en) | 2006-05-15 |
| KR101165317B1 (en) | 2012-07-18 |
| JP2006084012A (en) | 2006-03-30 |
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