CN109578660A - Motor-driven valve - Google Patents
Motor-driven valve Download PDFInfo
- Publication number
- CN109578660A CN109578660A CN201810877531.7A CN201810877531A CN109578660A CN 109578660 A CN109578660 A CN 109578660A CN 201810877531 A CN201810877531 A CN 201810877531A CN 109578660 A CN109578660 A CN 109578660A
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- CN
- China
- Prior art keywords
- valve
- holder
- plug
- main
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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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
- 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
- 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
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating 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
- 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
- F16K1/02—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 with screw-spindle
-
- 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
- F16K1/44—Details of seats or valve members of double-seat 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
- 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
- F16K1/48—Attaching valve members to screw-spindles
-
- 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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- 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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid 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
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
- F16K39/024—Devices for relieving the pressure on the sealing faces for lift valves using an auxiliary valve on the main valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Fluid-Driven Valves (AREA)
Abstract
A kind of motor-driven valve is provided, reduces torque required for valve opening, can be improved action, durability, and can be realized miniaturising for motor-driven valve.It is moved upward along with valve holder (23) by lifting drive, pilot valve (27) and main valve plug (25) are engaged with different ascending amounts with valve holder (23) according to pilot valve (27), the such sequence of main valve plug (25), thus, pressure access (26A) open after, have the time poorly (periodically) open valve port (11b).
Description
Technical field
The present invention relates to a kind of the electronic of flow control for being assembled in refrigeration cycle etc. and being used in the fluids such as refrigerant
Valve.
Background technique
As this motor-driven valve for being used in refrigeration cycle etc., for example, as it is known that a kind of motor-driven valve, has: spool；Valve
Axis, the valve shaft spool is kept into can move axially relatively and can relative rotation, and the valve shaft have external screw thread
Portion；Spool force application spring, spool force application spring compression are installed between the spool and the valve shaft；Valve body, valve master
Body is provided with guide rod and valve seat, which has an internal thread part screwed togather with the external thread part of the valve shaft, the valve seat with
The spool contact, separation；And lift drive mechanism etc., the lift drive mechanism have for making the valve shaft relative to institute
The rotor and stator that guide rod is gone up and down while rotating are stated, the valve for being sliding freely intercalated in the cylindrical portion of the guide rod is protected
Gripping member is set to the lower part of the valve shaft, also, the spool can move axially relatively and being capable of interpolation with the relative rotation
In the valve holder, and the spool schedules the bottom of the valve holder (for example, referring to following patent documents 1 by Anti-release clamp
Deng).
However, in recent years, in such motor-driven valve applied to refrigeration cycle etc., it is desirable that do not change product size
And heavy caliber (big flow), head pressure can be corresponded to.
Specifically, in recent years, air-conditioning equipment etc. requires high capacity, the electricity of refrigeration cycle for the air-conditioning equipment etc. etc.
Dynamic valve needs heavy caliber and copes with the head pressure under dual-flow.In order to meet such requirement, needed when carrying out valve opening movement
Big driving torque is wanted, even and if being also required to apply energy to valve part in the case where countercurrent direction generates head pressure in valve closing
Enough keep the load of valve closing.
In order to obtain big driving torque, needs to improve the output torque of the motor as lifting drive, need height
Magnmet rotor material of magnetic force etc., the worry for thering is the enlargement for leading to product, cost to improve.In addition, for closing under head pressure
Valve is kept and the helical spring etc. that needs to have big load, so that having leads to the mutual frictional resistance of constitutional detail because of the load
The worry of increase etc..
For such a problem, such as following patent documents 2 propose following technology: being arranged in valve chamber to major diameter
Major diameter spool that valve port is opened and closed and the path spool that the valve port for the path being set in the major diameter spool is opened and closed this
Two spools poorly carry out valve opening to the valve port of path and the valve port of major diameter with the two spools with the time, to reduce major diameter
The compression load of spool, prevents the enlargement of motor, and then prevents the enlargement of motor-driven valve.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2016-156447 bulletin
Patent document 2: Japanese Unexamined Patent Publication 8-21554 bulletin
(problems to be solved by the invention)
However, in the existing motor-driven valve documented by above patent document 2, it is provided with to path spool to valve closing direction
The spring (valve closing buffer spring) of force, and it is provided with the spring (Spring) to exert a force to major diameter spool to valve closing direction, in institute
After stating path spool valve opening, the major diameter spool overcomes the spring (Spring) to exert a force to the major diameter spool to valve closing direction
It exerts a force and rises carry out valve opening using the snap-in function of the fastened component engaged with the path spool.Therefore, described big
When diameter spool valve opening, the torque compressed to the spring (valve closing buffer spring) and the spring (Spring) is needed, no
It obtains and does not increase driving torque, therefore, it is desirable to further decrease torque.
Summary of the invention
The present invention makes in view of the foregoing, and its purpose is to provide a kind of motor-driven valves, reduces needed for valve opening
Torque, and can be improved action, durability, and can be realized miniaturising for motor-driven valve.
(means for solving the problems)
In order to reach the purpose, motor-driven valve of the invention substantially has: valve body, the valve body have valve chamber,
Inflow entrance and outflux, and it is provided between the valve chamber and the outflux valve port of valve seat；Main valve plug, the main valve
Core is for being opened and closed the valve port；Back pressure chamber, the back pressure chamber are formed in the back side of the main valve plug；Access is pressed, this is
Pressure access is set in the main valve plug so that the valve port to be connected to the back pressure chamber；Pilot valve, the pilot valve are used for
The pressure access is opened and closed；Force application part, the force application part exert a force to the pilot valve to valve closing direction；Valve is kept
The main valve plug and the pilot valve are kept into and can relatively move along lifting direction by part, the valve holder；And lifting
Driving device, which has the rotor and stator for moving the valve holder along lifting direction, described
Back pressure chamber is connected to the valve chamber, is moved upward along with the valve holder by the lifting drive, described
Pilot valve and the main valve plug according to sequence as the pilot valve, the main valve plug with different ascending amounts with it is described
The engaging of valve holder opens the valve port as a result, after the pressure access is opened.
In a preferred manner, when the valve holder by the lifting drive from most down position upwards
When continuously moving, in the state of keeping the main valve plug to close the valve port, the pilot valve passes through the force section
The force of part and engage with the valve holder, and the pilot valve is moved upward together with the valve holder and is beaten
The pressure access is opened, later, when the valve holder just moves further up, the main valve plug and the valve holder
Engaging, the main valve plug are moved upward together with the valve holder and open the valve port.
In other preferred modes, the valve holder has cylindrical shape, configured with described in the valve holder
The top of main valve plug, the pilot valve and the force application part, and the main valve plug in the valve holder
The back side marks off the back pressure chamber.
In a more preferred manner, the apical pore of the valve holder and valve shaft link, which is configured to through the liter
It drops driving device and can go up and down.
In other preferred modes, in order to reduce the resistance of the rotational slide between the valve holder and the main valve plug
Power is clamped with washer between the valve holder and the main valve plug.
In other preferred modes, using the force application part, via the pilot valve to the main valve plug to
Valve closing direction force.
In other preferred modes, the pressure access is by being set to the vertical hole in the main valve plug along lifting direction
It constitutes.
In other preferred modes, the pilot valve has inverted cone relative to the face of taking a seat for pressing access
Face.
(invention effect)
In motor-driven valve of the invention, it is moved upward along with valve holder by lifting drive, pilot valve
Core and main valve plug are engaged with different ascending amounts with valve holder according to sequence as pilot valve, main valve plug, as a result, equal
Press access open after, have the time poorly (periodically) open valve port, therefore, before valve port valve opening, pressure access open and
The upper and lower differential pressure of main valve plug is reduced and (is pressed), and the force application part to be exerted a force to valve closing direction to pilot valve is in valve port valve opening
When not to main valve plug exert a force, therefore driving torque reduce, can be improved action, durability, and can be realized motor-driven valve
It miniaturises.
In addition, pilot valve is relative to pressing the face of taking a seat of access with the rounding conical surface, therefore, after capable of reducing valve opening
Changes in flow rate gradient (rising degree), can be improved the controlling of low discharge control area.
Detailed description of the invention
Fig. 1 is the longitudinal section view for indicating an embodiment of motor-driven valve of the invention.
Fig. 2 is the action specification for motor-driven valve shown in FIG. 1, expression closed valve state major part amplification vertical profile view
Figure.
Fig. 3 is that the action specification for motor-driven valve shown in FIG. 1, expression valve opening midway state major part amplification is vertical
Cross-sectional view.
Fig. 4 is the major part for the opening state that the action specification for motor-driven valve shown in FIG. 1, expression press access
Amplify longitudinal section view.
Fig. 5 is the major part amplification of the action specification for motor-driven valve shown in FIG. 1, expression valve port opening state
Longitudinal section view.
Fig. 6 is other the longitudinal section view for indicating motor-driven valve shown in FIG. 1.
Fig. 7 is the metering characteristics figure of Fig. 1 and motor-driven valve shown in fig. 6.
(symbol description)
1 motor-driven valve
6 first entrances (inflow entrance)
7 second entrances (outflux)
10 valve bodies
11 valve base parts
11a valve seat
11b valve port
12 valve chambers
15 guide rods
15i internal thread part
20 back pressure chambers
21 valve shafts
21e external thread part
23 valve holders
23b inward flange shape hook portion
23c inner circumferential stage portion
24 spool force application springs (force application part)
25 main valve plugs
25d outward flange shape engaging portion
26 vertical holes
26A presses access
27 pilot valves
27b spring-loaded portion
The flange shape engaging portion of 27c
28 valve hole parts
29 washers
30 rotors
35 valve closing direction movable stops
36 valve opening position movable stops
45 shells
50 stators
55 valve closing direction fixed stops
56 valve opening position fixed stops
Specific embodiment
Hereinafter, embodimentsing of the present invention will be described while referring to attached drawing.
Fig. 1 is the longitudinal section view for indicating an embodiment of motor-driven valve of the invention, and Fig. 2~Fig. 5 is for shown in FIG. 1
The figure of the action specification of motor-driven valve.
In addition, in the present specification, top to bottom, left and right, front and rear etc. indicate that the description of position, direction is in order to avoid illustrating to become
It is loaded down with trivial details and advantageously mark the position being not necessarily referring under actual use state in attached drawing, direction.
In addition, in the various figures, for easy understanding invent, and realize and facilitate drawing, sometimes with the size of each structure member
It compares, the description for increasing or reducing is formed in the gap between component, separation distance between component etc..
The motor-driven valve 1 of illustrated embodiment has valve body 10, shell 45, guide rod 15, valve shaft 21, rotor 30 and determines
Son 50, valve body 10 are the bottomed cylindricals of upper surface opening, and the lower end of shell 45 is sealingly engaged in the valve by welding etc.
The upper end face peripheral side of main body 10, guide rod 15 have flange shape plectane 18, and the flange shape plectane 18 is fixed by welding etc.
In the upper end face inner circumferential side of valve body 10, it is formed in the external thread part 21e of the shaft-like portion periphery 21a of valve shaft 21 and leads with being formed in
Screwed togather to the internal thread part 15i of the path top 15b of bar 15, rotor 30 and the connection of valve shaft 21 be fixed as can unitary rotation, it is fixed
Periphery outside son 50 embedded in the shell 45 is to carry out rotation driving to rotor 30.
Here, stepping motor is constituted by rotor 30 and stator 50, in addition, by the internal thread part 15i and valve of guide rod 15
The external thread part 21e of axis 21 constitutes feed screw mechanism, is made of the stepper motor and feed screw mechanism for making valve shaft
The lifting drive that 21 (and aftermentioned valve holders 23) are gone up and down while rotating.
The valve body 10 is to be made using such as sheet metal as raw material by punch process, at the bottom of valve body 10
Portion 10b is fixed with valve base part 11 by soldering etc., which has the valve port 11b with valve seat 11a, and in valve
Lower part of the top of main body 10 inserted with guide rod 15.In addition, in illustrated example, around the valve seat 11a in valve base part 11
(that is, around aftermentioned main valve plug 25) erects the longitudinal wall 11c for being provided with short cylinder shape.
The side of the valve chamber 12 marked off in the valve body 10 is bonded to be made of pipe fitting the by being brazed etc.
One entrance 6 is bonded to the second entrance 7 being made of pipe fitting by soldering etc. in valve base part 11 (lower part).
The valve shaft 21 includes the top small diameter portion 21b for being externally embedded to the union body 32 of the rotor 30；Have and guide rod
The shaft-like portion 21a for the external thread part 21e that 15 internal thread part 15i is screwed togather；And more than the shaft-like portion 21a (external thread part 21e)
The disk-shaped lower part major diameter linking part 21c of the heavy wall with flange 21d on the lower.The lower end of valve shaft 21 maintains circle
The valve holder 23 of tubular, the apical pore part of the valve holder 23 are fixedly linked on flange 21d (in illustrated example, by riveting
Socket part 23a rivets fixation), flange 21d is set to the periphery of the lower part major diameter linking part 21c of valve shaft 21, and valve
Holder 23 is sliding freely intercalated in the major diameter cylindrical shape trunk 15a of guide rod 15.That is, in this example, cylindric valve
The apical pore of holder 23 is closed by the lower part major diameter linking part 21c of valve shaft 21, and 21 one of the valve holder 23 and valve shaft
Ground is gone up and down while rotating.(interpolation) is sliding freely inserted into this along the vertical direction (lifting direction) in the top of main valve plug 25
The lower part of valve holder 23 is simultaneously kept, also, pilot valve 27 along the vertical direction (lifting direction) be sliding freely inserted into it is (interior
Insert) it the upside of main valve plug 25 in valve holder 23 and is kept.
In this example, main valve plug 25 is using such as metal as raw material and by configuring along up and down direction (axes O direction)
The component production of shaft-like with the level, which includes the spool portion 25a of inverted cone mesa-shaped, under spool portion 25a
Portion is inserted in valve seat 11a (valve port 11b) and takes a seat；The columned trunk 25b being connected with the top of spool portion 25a；
And the major diameter head 25c being connected with the top of trunk 25b.
The lower end that 25 (the major diameter head 25c) Anti-release clamp of main valve plug is scheduled to valve holder 23, in the main valve
The washer 29 being made of the cyclic annular plectane of thin-walled is clipped between core 25 (major diameter head 25c) and the lower end of valve holder 23,
And mark off the inwardly projecting setting of inward flange shape hook portion 23b for the trunk 25b of the main valve plug 25 through-hole inserted
In the lower end of valve holder 23.When valve holder 23 is moved upward relative to valve body 10, it is configured at valve holder 23
The washer 29 of inward flange shape hook portion 23b be hooked in outward flange shape engaging portion 25d and, outward flange shape engaging portion locking by anticreep
25d by the main valve plug 25 major diameter head 25c (lower surface) outer peripheral portion (in other words, trunk 25b and major diameter head
Downward circular table top between 25c) it constitutes.In addition, be clipped on valve holder 23 (inward flange shape hook portion 23b) with
The setting of the washer 29 between main valve plug 25 (outward flange shape engaging portion 25d) comes for reducing valve holder 23 and main valve plug
Rotational slide resistance between 25 (in other words, prevents the rotary motion of the valve holder 23 carried out by the lifting drive
It is transmitted to main valve plug 25).
In addition, in order to constitute valve port 11b and the upside (back side) for being formed in main valve plug 25 (in valve holder 23)
Pressure access (also referred to as first guiding path) 26A that back pressure chamber 20 is connected to, (the axes O side along the vertical direction in the main valve plug 25
To) perforation is provided with step and the diameter vertical hole 26 smaller than valve port 11b.
On the other hand, it is placed in the upper surface of main valve plug 25 (vertical hole 26) substantially round with spring-loaded portion 27b
The pilot valve 27 of tubular.The valve hole part 28 of short cylindrical shape is kept fixed in the lower end (lower surface) of the pilot valve 27
The vertical hole 26 of (in illustrated example, carrying out riveting fixation by caulking part 27a), the valve hole part 28 and the main valve plug 25 is (
Pressure access 26A) upper end edge portion (poppet port) contact, separation and press this access 26A to be opened and closed, and be by such as rubber
The production of glue elastomeric material.In addition, flange shape spring-loaded portion 27b is set to the lower part of pilot valve 27 with protruding outward
Periphery, in the lower part major diameter linking part 21c of spring-loaded portion 27b (upper surface) and valve shaft 21 (set by the periphery of lower surface
The concave face for the annular shape set) between, compression is equipped with spool and gives as security the compression helical spring structure by cylindrical shape for pressing simultaneous buffering
At spool force application spring (force application part) 24.By the spool force application spring 24 (force), pilot valve 27 always by
Under (valve closing direction) exert a force, and main valve plug 25 via pilot valve 27 by downward (valve closing direction) force.
It is formed with and the flange shape spring-loaded portion 27b size engaged in the midriff inner circumferential of valve holder 23
Inner circumferential stage portion 23c.When valve holder 23 is moved upward relative to valve body 10, by the spring-loaded portion of pilot valve 27
The flange shape engaging portion 27c that the outer peripheral portion of 27b (lower surface) is constituted is (upward by the inner circumferential stage portion of valve holder 23
Circular table top) 23c is locking by hook.
In addition, in this example, valve holder 23 downside of the inner circumferential stage portion 23c (in) is provided with multiple perforations
Hole (cross-drilled hole) 23d, the back pressure chamber 20 (inside of valve holder 23) and valve chamber 12 connect always via described through hole 23d etc.
It is logical.
Above-mentioned valve shaft 21, valve holder 23, main valve plug 25, pilot valve 27 and spool force application spring 24 is in main valve plug
25 lift off a seat 11a state (valve opening state) under substantially integrally gone up and down while rotating, main valve plug 25, pilot valve
27 and spool force application spring 24 (lifting direction) relative movement and valve can be held in the relative rotation along the vertical direction
In holder 23.
In addition, in this case, in closed valve state (valve holder 23, main valve plug 25 and pilot valve as shown in Figure 1
27 be in most down position states, and pressure access 26A close, valve port 11b close states) under, pilot valve 27 it is convex
The inner circumferential stage portion 23c (upward table top) (in the up-down direction) of edge shape engaging portion 27c (lower surface) and valve holder 23
It separates defined distance La, the outward flange shape engaging portion 25d (lower surface) of main valve plug 25 and is configured at the interior of valve holder 23
The washer 29 (upper surface) (in the up-down direction) of flange shape hook portion 23b separates defined distance Lb, with the pass of Lb > La
It is to set each separation distance (referring to Fig. 2).It is moved upwards along with valve holder 23 by lifting drive as a result,
Dynamic, pilot valve 27 and main valve plug 25 are engaged according to pilot valve 17, the sequence of main valve plug 25 with different ascending amounts (position)
In valve holder 23 (narration in detail later).
In addition, there is defined width, height, depth and section in order to set the origin position of rotor 30 and valve shaft 21
For rectangle valve closing direction fixed stop 55 be set to projecting upwards guide rod 15 path top 15b upper surface,
It is set to being downwardly projected with the valve opening position fixed stop 56 that defined width, height, depth and section are rectangle
The top of the major diameter cylindrical shape trunk 15a of guide rod 15.
The upper end of valve closing direction movable stop 35 and the external thread part 21e in valve shaft 21 screw togather and locking by anticreep
In the disk-shaped top of rotor 30.The valve closing direction is made of with movable stop 35 nut portions 35a and retainer 35s, nut
Portion 35a is screwed together in external thread part 21e, and the shape under overlooking is hexagon and is on one side arc-shaped, and retainer 35s is from the nut
Portion 35a is downwardly projected setting, and having defined width, height, depth and section is rectangle.
It is screwed togather in addition, abutting locking valve opening position movable stop 36 with the valve opening position fixed stop 56
In the external thread part 21e of valve shaft 21 lower end and by Anti-release clamp schedule the valve shaft 21 lower part major diameter linking part 21c.This is opened
Valve direction is made of with movable stop 36 nut portions 36a and retainer 36s, and nut portions 36a is screwed togather with external thread part 21e, only
Dynamic portion 36s projects upwards setting from nut portions 36a, and having defined width, height, depth and section is rectangle.
The rotor 30 is made of the cylindric magnet 31 with top and the union body 32 being integrated at the top of this, is linked
Top small diameter portion 21b outside body 32 in valve shaft 21, and be placed in valve closing direction movable stop 35 and weld
It connects and is fixed on the top small diameter portion 21b.
Here, being provided with recess portion 33 in the lower face side at the top of the rotor 30, which has at both ends
The D cutting part for being formed as D shape under vertical view, in the part in arc-shaped being formed in other than the D cutting part of the recess portion 33, to support
The state connect is embedded with one side in arc-shaped of the nut portions 35a of valve closing direction movable stop 35, the nut
The another both sides of portion 35a are embedded into D cutting part with the state abutted, as a result, rotor 30, valve closing direction movable stop 35 and valve
Axis 21 is integrally gone up and down while rotating.
On the other hand, outer embedded with by yoke 51, bobbin 52, coil 53, resin molded body in the periphery of the shell 45
The stator 50 of the compositions such as 54.The stator 50 is and being set to positioning mounting (illustration omitted) of its bottom relative to valve body
10 positioning are fixed in defined position.
As a result, when rotor 30 rotates, valve shaft 21 is integrally rotated with the rotor 30, at this point, valve shaft 21 and valve holder
23 gone up and down by the feed screw mechanism along with pilot valve 27 and spool 25, and refrigerant passes through flow quilt as a result,
Adjustment.
The movement (especially, valve opening acts) that the motor-driven valve 1 of above structure is directed at while referring to Fig. 2~Fig. 5 is specific
Ground is illustrated.
In addition, fluid (refrigerant) is in both directions (from 6 direction of the first entrance in the motor-driven valve 1 of present embodiment
The direction (horizontal → under) of second entrance 7 and from the second entrance 7 towards the direction (under → horizontal) of the first entrance 6 the two
Direction) flowing, but the movement of motor-driven valve 1 is essentially identical from the flow direction in fluid (refrigerant), therefore, with
Under, it is illustrated so that the case where pressure eliminates the cross → lower flowing of (balance) effect can be played as representative.Therefore, below
In movement, the first entrance 6 becomes inflow entrance (high-pressure side), the second entrance 7 becomes outflux (low-pressure side).
Under closed valve state as shown in Figure 2, valve closing direction movable stop 35 and valve closing direction fixed stop
55 abut and it is locking, rotor 30, valve shaft 21 and valve holder 23 are in most down position.At this point, the flange of pilot valve 27
The inner circumferential stage portion 23c (upward table top) of shape engaging portion 27c (lower surface) and valve holder 23 separates defined distance La,
The outward flange shape engaging portion 25d (lower surface) of the main valve plug 25 and inward flange shape hook portion 23b for being configured at valve holder 23
Washer 29 (upper surface) separates defined distance Lb (> La), passes through spool force application spring 24 (force), pilot valve 27
By downward (valve closing direction) force, and main valve plug 25 is via pilot valve 27 and by downward (valve closing direction) force.Therefore, first
Guide valve core 27 (lower surface of valve hole part 28) crimps the upper end of the vertical hole 26 (pressure access 26A) of (being seated at) main valve plug 25
Edge (poppet port) and close and press access 26A, and main valve plug 25 (spool portion 25a) is crimped and (is taken a seat) in valve body 10
Valve seat 11a and close port 11b.
When becoming the pulse of valve closing direction drive mode to the supply of stator 50 from closed valve state shown in Fig. 2, rotor
30 and valve shaft 21 rotate, pass through the feed screw mechanism being made of internal thread part 15i and external thread part 21e, rotor 30, valve shaft
21, valve holder 23 and valve closing direction are risen while rotating with movable stop 36.It is until its ascending amount reaches La
Only (until state shown in Fig. 3), the flange shape engaging portion 27c of pilot valve 27 is not hooked in the inner circumferential step of valve holder 23
Portion 23c, by spool force application spring 24 (force), to keep the state for access 26A and valve port 11b being pressed to close (with Fig. 2 phase
Same closed valve state).At this point, the decrement of spool force application spring 24 gradually decreases and its overall length is progressively longer therewith.
Rotor 30, valve shaft 21, valve holder 23 and valve opening position with movable stop 36 further. while rotating
Rise, when its ascending amount reaches La, as shown in figure 3, the flange of (passing through the force of spool force application spring 24) pilot valve 27
Shape engaging portion 27c engages with the inner circumferential stage portion 23c of valve holder 23.(Fig. 4 until ascending amount is more than La and reaches Lb
Shown in until state), due to the upper and lower pressure difference of main valve plug 25, main valve plug 25 (spool portion 25a) is being kept to be pressed
Under the state (that is, the state for keeping 25 close port 11b of main valve plug) of the valve seat 11a of valve body 10, pilot valve 27 passes through
The flange shape engaging portion 27c and the engaging of the inner circumferential stage portion 23c and with valve holder 23 together (integrally) it is mobile (on
Rise), upper end edge portion of the pilot valve 27 (lower surface of valve hole part 28) from the vertical hole 26 of main valve plug 25 (pressure access 26A)
(poppet port) leaves, thus pressure access 26A opening.In addition, when ascending amount is more than La, due to flange shape engaging portion 27c
Engage with inner circumferential stage portion 23c, therefore the overall length of spool force application spring 24 does not change.From the first entrance (inflow entrance) 6
The fluid that the back pressure chamber 20 is flowed into via valve chamber 12 flows into valve port 11b via the pressure access 26A in main valve plug 25.
Flow into the flow of the fluid (that is, the fluid flowed out to the second entrance (outflux) 7) of valve port 11b with valve holder 23 and
The rising (ascending amount) of pilot valve 27 and be gradually increased (Small Flow Control region).In the Small Flow Control region, effect
In the lower pressure (power acted on to valve closing direction) and lifting force (power acted on to valve opening position) balance (differential pressure quilt of main valve plug 25
It eliminates).
After pressure access 26A is opened as described, rotor 30, valve shaft 21, valve holder 23 and valve opening position
Further risen while rotating with movable stop 36, when its ascending amount reaches Lb (> La), as shown in figure 4, main valve
The outward flange shape engaging portion 25d of core 25 engages with the washer 29 for the inward flange shape hook portion 23b for being configured at valve holder 23.And
And when the ascending amount is more than Lb, as shown in figure 5, main valve plug 25 is by the outward flange shape engaging portion 25d and is configured at described
The washer 29 of inward flange shape hook portion 23b engage and together (integrally) mobile (rising) with valve holder 23, main valve plug 25 (
Spool portion 25a) it is left from the valve seat 11a of valve body 10, so that valve port 11b is open.It is flowed into from the first entrance (inflow entrance) 6
The fluid of valve chamber 12 flows into valve port 11b (diameter is relatively large compared with pressing access 26A), flows into the fluid of valve port 11b
The flow of (that is, the fluid flowed out to the second entrance (outflux) 7) (rises with the rising of valve holder 23 and main valve plug 25
Amount) and it is gradually increased (big flow control area).In the big flow control area, the lower pressure for acting on main valve plug 25 (is closed
The power in valve direction) and lifting force (power of valve opening position) also balance (differential pressure is eliminated).
In addition, final, valve opening position movable stop 36 abuts and locking with valve opening position fixed stop 56, by
This, rotor 30, the rotation of valve shaft 21 and valve retainer 23 and rising are forcibly stopped.
As described above, in the motor-driven valve of present embodiment 1, pass through lifting driving dress along with valve holder 23
It sets and upward direction is mobile, pilot valve 27 and main valve plug 25 are according to sequence as pilot valve 27, main valve plug 25 with difference
Ascending amount be sticked in valve holder 23, as a result, after pressure access 26A is opened, valve port 11b has poorly (stage time
Property) (in other words, the pressure access 26A and valve port 11b is successively periodically opened) is opened, therefore, in valve port 11b
Pressure access 26A is opened before valve opening and the upper and lower differential pressure of main valve plug 25 is reduced and (pressed), and to pilot valve 27 to closing
The spool force application spring (force application part) 24 of valve direction force does not exert a force to main valve plug 25 in valve port 11b valve opening, therefore
Driving torque reduces, and can be improved action, durability, and can be realized miniaturising for motor-driven valve 1.
In addition, in the above-described embodiment, being seated at the upper of the vertical hole 26 (pressure access 26A) being arranged in main valve plug 25
The lower surface (face of taking a seat) of the valve hole part 28 of the pilot valve 27 of end edge portion is made of plane, still, for example, as shown in fig. 6,
Pilot valve 27 is for pressing the face 27A that takes a seat of access 26A also to can have the rounding conical surface.In the example shown in Fig. 6, described
The face 27A that takes a seat is made of the inverted cone table top with the rounding conical surface.In this case, by adjusting the face of taking a seat (the rounding conical surface)
Inclination angle (pilot angle) θ of 27A etc., as shown in fig. 7, for example compared with above embodiment, after capable of reducing rigid valve opening
The gradient (rising degree) of changes in flow rate can be improved the controlling of low discharge control area (referring to Fig. 4).
Claims (8)
1. a kind of motor-driven valve, which is characterized in that have:
Valve body, which has valve chamber, inflow entrance and outflux, and is arranged between the valve chamber and the outflux
Valve port with valve seat；
Main valve plug, the main valve plug is for being opened and closed the valve port；
Back pressure chamber, the back pressure chamber are formed in the back side of the main valve plug；
Access is pressed, this presses access to be set in the main valve plug so that the valve port to be connected to the back pressure chamber；
Pilot valve, the pilot valve are used to that the pressure access to be opened and closed；
Force application part, the force application part exert a force to the pilot valve to valve closing direction；
Valve holder, which is kept into the main valve plug and the pilot valve can be along the opposite shifting in lifting direction
It is dynamic；And
Lifting drive, the lifting drive have for making the valve holder edge go up and down the rotor and determine that direction is moved
Son,
The back pressure chamber is connected to the valve chamber,
It is moved upward along with the valve holder by the lifting drive, the pilot valve and the main valve
Core is engaged with different ascending amounts with the valve holder according to sequence as the pilot valve, the main valve plug, as a result,
After the pressure access is opened, the valve port is opened.
2. motor-driven valve according to claim 1, which is characterized in that
When the valve holder by the lifting drive from when most down position continuously moves upwards, keeping
The main valve plug is closed in the state of the valve port, and the pilot valve is protected by the force of the force application part with the valve
Gripping member engaging, and the pilot valve is moved upward together with the valve holder and opens the pressure access, later,
When the valve holder just moves further up, the main valve plug engages with the valve holder, the main valve plug and institute
Valve holder is stated to be moved upward together and open the valve port.
3. motor-driven valve according to claim 1 or 2, which is characterized in that
The valve holder has cylindrical shape, top, the pilot valve in the valve holder configured with the main valve plug
Core and the force application part, and the back side of the main valve plug in the valve holder marks off the back pressure chamber.
4. motor-driven valve according to claim 3, which is characterized in that
The apical pore and valve shaft of the valve holder link, which is configured to go up and down by the lifting drive.
5. motor-driven valve according to any one of claims 1 to 4, which is characterized in that
In order to reduce the rotational slide resistance between the valve holder and the main valve plug, in the valve holder and the master
Washer is clamped between spool.
6. motor-driven valve according to any one of claims 1 to 5, which is characterized in that
Using the force application part, exert a force to the main valve plug to valve closing direction via the pilot valve.
7. the motor-driven valve according to any one of claims 1 to 6, which is characterized in that
The pressure access is made of the vertical hole being set in the main valve plug along lifting direction.
8. motor-driven valve according to any one of claims 1 to 7, which is characterized in that
The pilot valve has the rounding conical surface relative to the face of taking a seat for pressing access.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-188018 | 2017-09-28 | ||
| JP2017188018A JP6643292B2 (en) | 2017-09-28 | 2017-09-28 | Electric valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578660A true CN109578660A (en) | 2019-04-05 |
| CN109578660B CN109578660B (en) | 2022-02-01 |
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ID=65919636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810877531.7A Active CN109578660B (en) | 2017-09-28 | 2018-08-03 | Electric valve |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6643292B2 (en) |
| KR (1) | KR102473774B1 (en) |
| CN (1) | CN109578660B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637230A (en) * | 2020-05-22 | 2020-09-08 | 杭州易超新能源汽车科技有限公司 | Novel combination valve |
| WO2022242495A1 (en) * | 2021-05-17 | 2022-11-24 | 丹佛斯有限公司 | Flow control valve |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7208127B2 (en) * | 2019-10-11 | 2023-01-18 | 株式会社鷺宮製作所 | Electric valve and refrigeration cycle system |
| JP7138953B2 (en) * | 2020-05-21 | 2022-09-20 | 株式会社不二工機 | electric valve |
| JP7465845B2 (en) * | 2021-04-15 | 2024-04-11 | 株式会社鷺宮製作所 | Motor-operated valve and refrigeration cycle system |
| JP2022187265A (en) * | 2021-06-07 | 2022-12-19 | 株式会社不二工機 | electric valve |
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| CN101149118A (en) * | 2006-09-20 | 2008-03-26 | 株式会社不二工机 | Motor-operated valve |
| JP2009210120A (en) * | 2008-03-06 | 2009-09-17 | Toyota Motor Corp | Pilot type solenoid valve, and fuel cell system |
| CN201827486U (en) * | 2010-03-31 | 2011-05-11 | 张国臣 | Sealing adjustable valve |
| CN102297189A (en) * | 2010-06-25 | 2011-12-28 | 株式会社不二工机 | Female screw member, motor operated valve using same, and method for producing female screw member for motor operated valve |
| JP2016164435A (en) * | 2015-03-06 | 2016-09-08 | 株式会社鷺宮製作所 | Motor valve |
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| JPS601491Y2 (en) * | 1982-12-28 | 1985-01-16 | 日本電子株式会社 | vacuum valve device |
| JP2898906B2 (en) | 1995-06-29 | 1999-06-02 | 株式会社不二工機 | Electric flow control valve |
| JP2012117584A (en) * | 2010-11-30 | 2012-06-21 | Saginomiya Seisakusho Inc | Electric flow control valve |
| JP6563213B2 (en) | 2015-02-24 | 2019-08-21 | 株式会社不二工機 | Motorized valve and its assembly method |
| JP6706574B2 (en) * | 2016-12-13 | 2020-06-10 | 太平洋工業株式会社 | valve |
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2017
- 2017-09-28 JP JP2017188018A patent/JP6643292B2/en active Active
-
2018
- 2018-06-18 KR KR1020180069375A patent/KR102473774B1/en active IP Right Grant
- 2018-08-03 CN CN201810877531.7A patent/CN109578660B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101149118A (en) * | 2006-09-20 | 2008-03-26 | 株式会社不二工机 | Motor-operated valve |
| JP2009210120A (en) * | 2008-03-06 | 2009-09-17 | Toyota Motor Corp | Pilot type solenoid valve, and fuel cell system |
| CN201827486U (en) * | 2010-03-31 | 2011-05-11 | 张国臣 | Sealing adjustable valve |
| CN102297189A (en) * | 2010-06-25 | 2011-12-28 | 株式会社不二工机 | Female screw member, motor operated valve using same, and method for producing female screw member for motor operated valve |
| JP2016164435A (en) * | 2015-03-06 | 2016-09-08 | 株式会社鷺宮製作所 | Motor valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637230A (en) * | 2020-05-22 | 2020-09-08 | 杭州易超新能源汽车科技有限公司 | Novel combination valve |
| CN111637230B (en) * | 2020-05-22 | 2021-03-30 | 杭州易超新能源汽车科技有限公司 | Novel combination valve |
| WO2022242495A1 (en) * | 2021-05-17 | 2022-11-24 | 丹佛斯有限公司 | Flow control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6643292B2 (en) | 2020-02-12 |
| KR102473774B1 (en) | 2022-12-05 |
| KR20190037079A (en) | 2019-04-05 |
| JP2019060479A (en) | 2019-04-18 |
| CN109578660B (en) | 2022-02-01 |
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