CN101122343B - Pilot type control valve - Google Patents
Pilot type control valve Download PDFInfo
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- CN101122343B CN101122343B CN2007101412795A CN200710141279A CN101122343B CN 101122343 B CN101122343 B CN 101122343B CN 2007101412795 A CN2007101412795 A CN 2007101412795A CN 200710141279 A CN200710141279 A CN 200710141279A CN 101122343 B CN101122343 B CN 101122343B
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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
- F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
- F16K31/143—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a piston
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/0606—Multiple-way valves fluid passing through the solenoid coil
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The guide type control valve of the invention comprises a main valve (5) and an electric pilot valve (7), wherein the main valve comprises the following components: a valve body (10) which is formed with a valve chamber (13) for leading in and leading out the fluid; and a main valve core (20) which is sliding-freely inserted in the valve body (10) and does opening or closing to the main valve opening (14) arranged on the valve body (10) and comprises a large diameter part (20A) and a minor diameter part (20B) and the cross section of which is shaped like a reverse Chinese character tu, and the electric pilot valve comprises the following components: a separating component (32) which is installed that the component closes the top opening of the valve body (10) and a backpressure chamber (33) is separated between the separating component and the main valve core (20); and a pilot valve core (35) which does opening and closing to the pilot valve opening (27) arranged on the main valve core (20), the electric pilot valve is arranged with a voltage equalizing channel (24) which communicates the valve chamber (13) with the backpressure chamber (33), and exerts the force facing to the valve-opening direction to the main valve core (20) with the compressed spiral spring (25), besides the main valve core (20) is caused to move to the valve-opening direction following the moving of the pilot valve core (35) to the valve-opening direction. Otherwise, the outer diameter Da of the large diameter part (20A) of the main valve core (20) is 1.5 to 3 times of the diameter Db of the main valve opening (14). The present invention can provide a guide type control valve which can optionally and subtly regulate the opening degree of the valve and can effectively avoid the generating of the noise, and can get an excellent response property and action stability as well as control property , etc.
Description
Technical field
The present invention relates to be applicable to the control valve of the refrigeration cycle of air conditioner etc., especially relate to can be arbitrarily the pilot-operated type control valve of control valve opening (opening area) fine.
Background technique
For example; Have in the multi-connected air conditioner of many indoor sets to an outdoor unit, as can be arranged on suitably control valve between outdoor unit and the indoor set known record such as following patent documentation 1 arranged used the pilot-operated type control valve of solenoid valve as pilot valve.
Above-mentioned pilot-operated type control valve has main valve and electromagnetic type pilot valve usually; Above-mentioned main valve have the valve body that is formed with the valve chamber that imports and exports refrigeration agent, intercalation sliding freely in this valve body and can with the main valve seat contact on being arranged on above-mentioned valve body, the main valve plug that separates, above-mentioned main valve plug be compressed all the time helical spring towards the top application of force of (valve opening position).In addition, the airtight main valve top that is fixed on of above-mentioned electromagnetic type pilot valve (partition member) is to seal the top opening of above-mentioned valve body.
In above-mentioned valve body, between main valve plug and main valve seat, be formed with above-mentioned valve chamber, be separated out back pressure chamber between main valve plug and the above-mentioned electromagnetic type pilot valve (partition member).
On above-mentioned main valve plug, be formed with the first guiding path of up/down perforation, the spool of above-mentioned electromagnetic type pilot valve contacts, separates with the guide's valve seat (valve port) that is arranged on this elder generation guiding path upper end portion.In addition, on above-mentioned main valve plug or valve body etc., be formed with and all press path to be communicated with above-mentioned valve chamber and back pressure chamber.
In the pilot-operated type control valve that so constitutes;, the electromagnetic type pilot valve do not closing the pilot valve seat under the application of force of the valve-closing spring of spool in pilot valve of pilot valve when switching on; And the spool of pilot valve (closes the valve direction) with main valve plug towards the below and pushes, thereby main valve also becomes closed condition.Therefore, at this moment, the high-pressure refrigerant that imports in the valve chamber can't be derived to outlet, but this high-pressure refrigerant imports back pressure chamber through the above-mentioned path of all pressing, thereby back pressure chamber also becomes high pressure, at full tilt main valve plug is pressed against on the main valve seat.
On the other hand, to the energising of electromagnetic type pilot valve, then guide's spool is raised and leaves guide's valve seat from above-mentioned closed condition, and pilot valve is opened.Thus, the refrigeration agent of back pressure chamber is derived to outlet through first guiding path, and the pressure of back pressure chamber descends, and the power (opening the power of valve) that pushes away main valve plug on the application of force of compression helical spring etc. overcomes the power (closing the power of valve) that presses down main valve plug, main valve plug by on push away main valve open.
Patent documentation 1: Japanese Patent Laid is opened clear 64-3177 communique
In the aforesaid existing pilot-operated type control valve; As long as have open small-bore pilot valve with regard to linkage open bigbore main valve; Thereby can open and close the advantage of bigbore main valve etc. with little driving force, but owing to used solenoid valve as pilot valve, thereby have following shortcoming.That is, in fact can only obtain these two positions of complete shut-down state and full-gear, fine control valve opening (opening area).In addition, before opening main valve, only open the opening area of pilot valve, so the opening area of valve integral body is little, all embossing is time-consuming, and response is not so good.In addition, when opening main valve, opening area increases quickly, thereby deafening noise takes place the flow rapid change.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of can be arbitrarily and control valve opening and can suppress the pilot-operated type control valve that noise takes place, can also obtain good responsiveness and action stability and control characteristic etc. effectively fine.
To achieve these goals; Pilot-operated type control valve of the present invention utilizes motoring guide spool to open and close basically; Open and close primary valve by main valve plug and this guide's spool interlock ground; Said main valve plug becomes the piston type that the cross section with large-diameter portion and minor diameter is down convex shape; And said main valve plug is followed said guide's spool and is moved towards valve opening position towards moving of valve opening position, and the aperture of said electrodynamic type pilot valve is held under certain state basically, and said guide's spool and main valve plug are moved towards valve opening position together.
For preferable form more specifically, pilot-operated type control valve of the present invention has main valve and electrodynamic type pilot valve, and said main valve comprises: the valve body that is formed with the valve chamber that imports and exports fluid; And intercalation sliding freely in this valve body with to being arranged on the piston type main valve plug that primary valve is that open and close, that have large-diameter portion and minor diameter, the cross section is down convex shape on the said valve body, said electrodynamic type pilot valve comprises: be mounted to opening above the said valve body of sealing and and said main valve plug between be separated out the partition member of back pressure chamber; And guide's spool that the poppet port that is arranged on the said main valve plug is opened and closed; Said electrodynamic type pilot valve is provided with all pressures path with said valve chamber and the connection of said back pressure chamber; Utilize compression helical spring to said main valve plug all the time towards the valve opening position application of force; And making said main valve plug follow said guide's spool moves towards valve opening position towards moving of valve opening position; The aperture of said electrodynamic type pilot valve is held under certain state basically, said guide's spool and main valve plug are moved towards valve opening position together.
The pilot-operated type control valve of preferable form, the external diameter of the large-diameter portion of said main valve plug are 1.5 to 3 times of bore of said primary valve.Promptly; As illustrative (valve port) opening area of opening the required pilot valve of main valve of Fig. 6; If the external diameter of the large-diameter portion of main valve plug is less than 1.5 times of degree of the bore of primary valve, then the opening area of the more little required pilot valve of its multiplying power increases with precipitous slope.This means that above-mentioned multiplying power is more little, the pilot valve that needs, to open the valve driving force big more.And when above-mentioned multiplying power surpassed 3 times, the opening area of required pilot valve not too reduced.Therefore, even above-mentioned multiplying power is made the size that also not too can reduce pilot valve more than 3 times and opened the valve driving force, thereby be useless.
Said electrodynamic type pilot valve preferably includes: jar; Be provided in the rotor in week in this jar; Be contained in the stator on said jar outward in order to drive this rotor rotation; Be configured between said rotor and the said guide's spool, utilize the rotation of said rotor to make said guide's spool at axially movable driving mechanism.
The pilot-operated type control valve of other preferable forms, the external diameter of the large-diameter portion of said main valve plug is bigger than the external diameter of said rotor.In addition, the bore of said primary valve 3 to 9 times of bore of said poppet port preferably.Thus, if open small-bore pilot valve with regard to linkage open bigbore main valve, can open and close bigbore main valve with little driving force.
In the pilot-operated type control valve of the present invention, used the pilot valve of DYN dynamic pilot valve rather than electromagnetic type, thereby can make valve opening (opening area), can accelerate all to press the time according to variations smoothly such as the umber of pulses of supplying with pilot valve as pilot valve.Therefore, can be arbitrarily and control valve opening (opening area) fine, and can suppress the generation of noise effectively, and can obtain good responsiveness, action stability, control characteristic etc.In addition; The external diameter of the large-diameter portion through making main valve plug becomes 1.5～3 times of bore of primary valve; Just can make pilot valve become required minimal size, its result can suppress the required consumes electric power of open and close valve etc., realizes comprising the whole miniaturization of valve of motor portion; And the sliding stability of main valve plug, thereby can obtain better controlling characteristic and action stability more.
Description of drawings
Fig. 1 is the longitudinal sectional view of an example of expression pilot-operated type control valve of the present invention, pilot valve: closed condition, main valve: closed condition.
Fig. 2 is the longitudinal sectional view that is used to explain the action of pilot-operated type control valve shown in Figure 1, pilot valve: open mode, main valve: closed condition.
Fig. 3 is the longitudinal sectional view that is used to explain the action of pilot-operated type control valve shown in Figure 1, pilot valve: open mode, main valve: open mode (little aperture).
Fig. 4 is the longitudinal sectional view that is used to explain the action of pilot-operated type control valve shown in Figure 1, pilot valve: open mode, main valve: open mode (maximum opening).
Fig. 5 is the plotted curve that is used to explain the action of pilot-operated type control valve shown in Figure 1.
Fig. 6 is the plotted curve that is used to explain the opening area of opening the required pilot valve of main valve.
Fig. 7 is expression with pack into the circuit diagram of the example in the refrigeration cycle of air conditioner of pilot-operated type control valve shown in Figure 1.
Embodiment
Below, describe with reference to the example of accompanying drawing pilot-operated type control valve of the present invention.
Fig. 1 is the longitudinal sectional view of an example of expression pilot-operated type control valve of the present invention.
The pilot-operated type control valve 1 of diagram example is suitable in air conditioners such as multi-connected air conditioner, being configured between outdoor unit and the indoor set, and pattern is electronic leading type, is made up of main valve 5 and the electrodynamic type pilot valve 7 that is arranged on these main valve 5 upsides.
Above-mentioned main valve 5 has valve body 10, and this valve body 10 comprises: the valve chamber cylindrical shell 11 cylindraceous with bottom with holes; And utilize the valve seat member 12 of sealing and fixing on the base apertures of this valve chamber cylindrical shell 11 such as welding; In this valve body 10, be formed with valve chamber 13; In addition; Be connected with the inlet ducts (joint) 41 that is used for the refrigeration agent of high pressure is imported valve chamber 13 at the periphery sidepiece; (valve seat member 12) is connected with and is used for the delivery channel (joint) 42 of refrigeration agent from valve chamber 13 derivation in the bottom, and in addition, the partition member 32 of pedestal shape is with the sealing and fixing such as state utilization welding of the top opening of draught excluder body 10 (valve chamber cylindrical shell 11).
On the valve seat member 12 of above-mentioned main valve 5, be provided with the primary valve 14 of the main valve seat 14a of band conical surface; Intercalation sliding freely has the cross section to be down the main valve plug 20 of the piston type of convex shape on the valve seat member 12 in valve body 10 (valve chamber cylindrical shell 11), between this main valve plug 20 (large-diameter portion 20A) and above-mentioned partition member 32, is separated out back pressure chamber 33.
Be provided with the main valve portion 21 that contacts, separates with above-mentioned main valve seat 14a in the underpart of above-mentioned main valve plug 20 (minor diameter 20B); In addition; On the large-diameter portion 20A of main valve plug 20, be formed with the balancing orifice 24 of the minor diameter that is communicated with above-mentioned valve chamber 13 and back pressure chamber 33; In addition, between large-diameter portion 20A and valve chamber cylindrical shell 11, be provided with Sealing 70.
In addition, on above-mentioned main valve plug 20, be formed with the first guiding path 28 of these main valve plug central authorities of up/down perforation.Particularly, the top surface portion central authorities of above-mentioned main valve plug 20 be pressed into be fixed be arranged on after the 36a of pilot valve portion contact, the guide's valve seat member 22 that separates on the underpart of guide's spool 35 of stating.Guide's valve seat member 22 is provided with the poppet port 27 of band guide valve seat 27a, and this poppet port 27 becomes the upper end portion of above-mentioned first guiding path 28.
The electrodynamic type pilot valve 7 that is arranged on above-mentioned main valve 5 upsides also comprises except comprising above-mentioned partition member 32 and having needle-like guide's spool 35 with the level of the pilot valve portion 36 that contacts, separates with guide's valve seat 27a: the underpart is through welding by the jar 34 of sealing engagement on above-mentioned partition member 32; Be arranged on with leaving specified gap this jar 34 interior week, around spin axis O rotor rotated 55; Be contained in the stator 50A on the jar 34 outward in order to drive these rotor 55 rotations.
Said stator 50A comprises: the yoke 51 that is made up of magnetic material; Be wound on the stator coil up and down 53,53 on this yoke 51 through coil rack 52; And resin molded cover 56, constitute stepping motor 50 by rotor 55 with stator 50A.
Above-mentioned jars 34 utilize nonmagnetic metal plate such as stainless steel as raw material; Have the cylindric of top through formation such as deep drawn processing; The underpart of this jar (opening end edge portion) is docked with the upper step portion of partition member 32 and is utilized welded seal to engage, the inner hermetic seal state that keeps.
The driving mechanism that make above-mentioned guide's spool 35 (pilot valve portion 36) and guide's valve seat 27a contact, separates is the tubular guide bush 37 of guide's spool 35 to be arranged and be arranged on the screwfeed mechanism 60 that the spool retainer 40 of tubular of the lower opening of its periphery constitutes by intercalation sliding freely.Promptly; The underpart of above-mentioned guide bush 37 is pressed into (screwing) and is fixed on the partition member 32; And near the central part of guide bush, be formed with external thread part 62; Above-mentioned spool retainer 40 is formed with the internal thread part (moving the screw section) 61 that the external thread part (retaining thread portion) 62 with guide bush 37 screws, and the central part at logical its top can be rotated and inserted with relatively moving to the top minor diameter of guide's spool 35 relatively.In the nut 44 that is placed in spool retainer 40 top upper surfaces (recess), be pressed into the upper end portion of the top minor diameter that is fixed with guide's spool 35.
In addition, compression is installed in buffering between the intermediate step portion of top and guide's spool 35 of spool retainer 40 with 38 pairs of above-mentioned guide's spools 35 of helical spring application of force towards the below all the time.The balancing orifice 37a that in the side of guide bush 37 is formed with back pressure chamber 33 and jar 34, all presses.
On the top of spool retainer 40, be provided with the Returnning spring 45 that constitutes by helical spring.When screwing of the mobile screw section 61 of the retaining thread portion of guide bush 37 62 and spool retainer 40 removed, Returnning spring 45 and jars 34 top butt were towards making retaining thread portion 62 recover the direction effect that screws with mobile screw section 61.
The following baffle element (fixed stop) 66 that constitutes a side of countercheck mechanism is fixed on the above-mentioned guide bush 37, and the last baffle element (moving block) 67 that constitutes the opposing party of countercheck mechanism is fixed on the spool retainer 40.
In this example; The D outer diameter a of the large-diameter portion 20A of above-mentioned main valve plug 20 is 1.5～3 times of bore Db of primary valve 14; And the D outer diameter c than above-mentioned rotor 55 is big; The bore of primary valve 14 is 3～9 times of bore of poppet port 27, and the aperture of the relative aperture balancing orifice 24 of poppet port 27 (minimum portion) is big.
At this, 1.5～3 times the reason that the aforesaid D outer diameter a that makes the large-diameter portion 20A of main valve plug 20 is become the bore Db of primary valve 14 describes.Promptly; As illustrative (the valve port 27) opening area of opening the required pilot valve 7 of main valve 5 of Fig. 6; If the D outer diameter a of the large-diameter portion 20A of main valve plug 20 is less than 1.5 times of the bore Db of primary valve 14, then the opening area of the more little required pilot valve of its multiplying power increases with precipitous slope.This means that above-mentioned multiplying power is more little, the pilot valve that needs, to open the valve driving force big more.And when above-mentioned multiplying power surpassed 3 times, the opening area of required pilot valve not too reduced.Therefore, even above-mentioned multiplying power is made the size that also not too can reduce pilot valve more than 3 times and is opened the valve driving force, so be useless.
Become 3～9 times of bore of poppet port 27 through the bore that makes primary valve 14, if open small-bore pilot valve 7 with regard to linkage open bigbore main valve 5, so can open and close bigbore main valve 5 with small driving force.
The pilot-operated type control valve 1 of electronic leading type with this example of above-mentioned formation; When above-mentioned main valve 5 is in closed condition (like Fig. 1, shown in Figure 2; The main valve portion 21 of main valve plug 20 sits in the state on the main valve seat 14a) and electrodynamic type pilot valve 7 during for open mode (guide's spool 35 leaves the state of guide's valve seat 27a); For example to supply with pulse to stepping motor 50 (stator coil 53,53) along phase place; Make the relative guide bush of rotor 55 37 towards folk prescription to rotation; The then screwfeed of the retaining thread portion through guide bush 37 62 and the mobile screw section 61 of spool retainer 40, spool retainer 40 are moved towards the below, and the pilot valve portion 36 of guide's spool 35 takes a seat and is crimped on guide's valve seat 27a and goes up and become closed condition.
Carve at this moment, last baffle element 67 also not with following baffle element 66 butts, formerly the pilot valve portion 36 of guide valve core 35 sits under the state on guide's valve seat 27a, spool retainer 40 continues to rotate decline.At this moment, the relative guide's spools 35 of spool retainer 40 descend, thereby thereby buffering be compressed the decline power of absorption spool retainer 40 with helical spring 38.After this, when rotor 55 continues rotation, spool retainer 40 descends, and then goes up baffle element 67 and bumps with following baffle element 66 and connect, even continuation is to the decline of stator coil 53,53 supply pulses also can forcibly stopping spool retainer 40.
As stated; When main valve 5 and electrodynamic type pilot valve 7 are in closed condition (state shown in Figure 1); The high-pressure refrigerant that imports in the valve chamber 13 from inlet ducts 41 imports back pressure chamber 33 through balancing orifice 24; Back pressure chamber 33 becomes high pressure, so the main valve portion 21 of main valve plug 20 is pressed against on the main valve seat 14a at full tilt.Like the longitudinal axis is that aperture is that opening area, transverse axis are the shown in Figure 5 of umber of pulse (rotating amount of rotor 55); At this moment; The valve opening of this pilot-operated type control valve 1 is that opening area (the effective vent area of the effective vent area+poppet port 27 of primary valve 14) is zero (umber of pulse from 0 to Ta), and the refrigerant flow that flows to delivery channel 42 from valve chamber 13 also is zero.
, above-mentioned main valve 5 and electrodynamic type pilot valve 7 begin for example to supply with pulse when being in closed condition (state shown in Figure 1) with antiphase to stepping motor 50 (stator coil 53,53); The relative guide bush of rotor 55 37 courts are rotated with above-mentioned opposite direction; The then screwfeed of the retaining thread portion through guide bush 37 62 and the mobile screw section 61 of spool retainer 40 is like Fig. 2 and shown in Figure 5, when umber of pulse (rotating amount) when becoming Ta; The pilot valve portion 36 of guide's spool 35 is along with spool retainer 40 begins to leave guide's valve seat 27a towards moving of top; Pilot valve 7 begins to open, and is as shown in Figure 5, and the valve opening of this pilot-operated type control valve 1 is that opening area slowly increased before umber of pulse becomes Tb; The refrigeration agent of back pressure chamber 33 flows out to delivery channel 42 through first guiding path 28, and the pressure of back pressure chamber 33 reduces pressure gradually.
When umber of pulse (rotating amount) when becoming Tb; As shown in Figure 2, the 36 before guide valve seat 27a of pilot valve portion of guide's spool 35 leave predetermined distance α, and the effective vent area of poppet port 27 (opening area of this pilot-operated type control valve 1) becomes Sa; The power (opening the power of valve) that pushes away main valve plug 20 on the elastic force of compression helical spring 25 etc. overcomes the power (closing the power of valve) that presses down main valve plug 20; Thereby main valve plug 20 by on push away, main valve portion 21 begins to leave main valve seat 4a, main valve 5 begins to open.
Then, further increase umber of pulse, as shown in Figure 3 before umber of pulse becomes Tc, the rising that main valve plug 20 is followed guide's spool 35 move and by on push away.Particularly; Formerly the 36 before guide valve seat 27a of pilot valve portion of guide valve core 35 leave the state of afore mentioned rules distance alpha; The aperture that is about to electrodynamic type pilot valve 7 remains under roughly certain state, and (valve opening position) moves towards the top together for above-mentioned guide's spool 35 and main valve plug 20.Thus, as shown in Figure 5, when umber of pulse (rotating amount) between the Tb to Tc the time, the opening area of this pilot-operated type control valve 1 (aperture) increases with certain slope smoothly gradually.Promptly; In this example; Dimensions of each several part etc. is set for: when umber of pulse between the Tb to Tc the time; 36 before guide valve seat 27a leave under the state of predetermined distance α in the pilot valve portion that keeps guide's spool 35, guide's spool 35 and main valve plug 20 relative pulse numbers (rotating amount) same distance that respectively rises.
When umber of pulse becomes Tc, as shown in Figure 4, the upper surface stop part 29 of main valve plug 20 and fixed stop 39 butts that are arranged on partition member 32 lower surfaces, thereby the rising of prevention main valve plug 20.Therefore, even umber of pulse has surpassed Tc, the valve opening of this pilot-operated type control valve 1 is the Sb of opening area also can be not Tc greater than umber of pulse the time, keeps the aperture (maximum opening) of this moment.
As stated, in the pilot-operated type control valve 1 of this example, used electrodynamic type pilot valve rather than electromagnetic type pilot valve, thereby valve opening (opening area) is changed according to the umber of pulse of supplying with pilot valve 7 smoothly, can accelerate all to press the time as pilot valve.Therefore, can be arbitrarily and control valve opening (opening area) fine, and can suppress the generation of noise effectively, and can obtain good responsiveness, action stability, control characteristic etc.In addition; The D outer diameter a of large-diameter portion 20A through making main valve plug 20 becomes 1.5～3 times of bore Db of primary valve 14; Just can make pilot valve 7 become required minimal size, its result can suppress the required consumes electric power of open and close valve etc., realizes comprising the whole miniaturization of valve of stepping motor 50 parts; And the sliding stability of main valve plug 20, thereby can obtain better controlling characteristic and action stability.
With reference to Fig. 7 the example in the refrigeration cycle of air conditioner that the pilot-operated type control valve 1 of this example is packed into is described below.At this, in air conditioner, when heating if on outdoor heat converter, generate the decline that frost will cause heating performance; Therefore need carry out Defrost operation in order to defrost; But when carrying out Defrost operation, just can't carry out heating operation, cause room temperature to descend, diminish travelling comfort.In addition, in this refrigeration cycle, used four-way valve as flow channel switching valve in the past; But in the general four-way valve,, stop at compressor in order to eliminate the refrigeration agent sound; Realized heating → defrosting after all pressures of high low pressure, the switching that defrosts → heat, thereby should switch spended time.Therefore hope to shorten to comprise the defrosting time of all pressing the stand-by period,, in refrigeration cycle shown in Figure 7 100, replace above-mentioned four-way valve and used the pilot-operated type control valve 1 of this example in order to tackle above-mentioned requirements.
In the refrigeration cycle 100 shown in Figure 7, flowing of the refrigeration agent during refrigeration representes that with solid arrow the mobile with dashed lines arrow of the refrigeration agent when heating is represented.
That is, (1) when heating, pilot-operated type control valve 210: open mode, pilot-operated type control valve 220: closed condition becomes flowing from the interface c → interface d of three-way valve 160.(2) switch to the defrost process 1 pilot-operated type control valve 210 from heating: open mode, pilot-operated type control valve 220: open up to standard-sized sheet gradually.At this moment, the pressure of the interface e of three-way valve 160 rises, and interface c is identical pressure with interface e, produces flowing of interface c → interface d, interface e → interface d.(3) switch to the defrost process 2 pilot-operated type control valve 210 from heating: close up to full cut-off pilot-operated type control valve 220: open mode gradually.At this moment, the pressure of the interface c of three-way valve 160 descends, and becomes flowing of interface e → interface d.(4) during Defrost operation (flowing of refrigeration agent is identical when freezing), pilot-operated type control valve 210: closed condition, pilot-operated type control valve 220: open mode, close up to full cut-off gradually.(5) switch to the process of heating 1 pilot-operated type control valve 210 from defrosting: open up to standard-sized sheet pilot-operated type control valve 220: open mode gradually.At this moment, the pressure of interface c rises, and interface e is identical pressure with interface c, produces flowing of interface e → interface d, interface c → interface d.(6) switch to the process of heating 2 pilot-operated type control valve 210 from defrosting: open mode, pilot-operated type control valve 220: open up to standard-sized sheet gradually.At this moment, the pressure of interface e descends, and becomes flowing of interface c → interface d.
Like this; Through the pilot-operated type control valve 1 (210,220) that uses above-mentioned example, the switching of modulating valve arbitrarily, just can change opening area gradually is flow; Need not stop compressor 110 just can heat → defrost; The switching that defrosts → heat, it is just changeable to stop compressor 110, thereby the defrosting time that can shorten winter.
Claims (5)
1. a pilot-operated type control valve is characterized in that, has main valve and electrodynamic type pilot valve,
Said main valve comprises: the valve body that is formed with the valve chamber that imports and exports fluid; And intercalation sliding freely in this valve body with to being arranged on the piston type main valve plug that primary valve is that open and close, that have large-diameter portion and minor diameter, the cross section is down convex shape on the said valve body,
Said electrodynamic type pilot valve comprises: be mounted to above the said valve body of sealing opening and and said main valve plug between be separated out the partition member of back pressure chamber; And guide's spool that the poppet port that is arranged on the said main valve plug is opened and closed,
Said electrodynamic type pilot valve is provided with all pressures path with said valve chamber and the connection of said back pressure chamber; Utilize compression helical spring to said main valve plug all the time towards the valve opening position application of force; And making said main valve plug follow said guide's spool moves towards valve opening position towards moving of valve opening position
The aperture of said electrodynamic type pilot valve is held under certain state basically, said guide's spool and main valve plug are moved towards valve opening position together.
2. pilot-operated type control valve as claimed in claim 1 is characterized in that, the external diameter of the large-diameter portion of said main valve plug is 1.5 to 3 times of bore of said primary valve.
3. pilot-operated type control valve as claimed in claim 1 is characterized in that, said electrodynamic type pilot valve comprises: jar; Be provided in the rotor in week in this jar; Be contained in the stator on said jar outward in order to drive this rotor rotation; Be configured between said rotor and the said guide's spool, utilize the rotation of said rotor to make said guide's spool at axially movable driving mechanism.
4. pilot-operated type control valve as claimed in claim 3 is characterized in that the external diameter of the large-diameter portion of said main valve plug is bigger than the external diameter of said rotor.
5. like each described pilot-operated type control valve in the claim 1 to 4, it is characterized in that the bore of said primary valve is 3 to 9 times of bore of said poppet port.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-214365 | 2006-08-07 | ||
| JP2006214365 | 2006-08-07 | ||
| JP2006214365 | 2006-08-07 |
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| Publication Number | Publication Date |
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| CN101122343A CN101122343A (en) | 2008-02-13 |
| CN101122343B true CN101122343B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101412795A Active CN101122343B (en) | 2006-08-07 | 2007-08-07 | Pilot type control valve |
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| Country | Link |
|---|---|
| KR (1) | KR101342780B1 (en) |
| CN (1) | CN101122343B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210212A (en) * | 2017-06-30 | 2019-01-15 | 浙江三花汽车零部件有限公司 | A kind of motor-driven valve |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110001077A1 (en) * | 2009-07-01 | 2011-01-06 | Maxitrol Company | Modulator valve assembly having an anti-backlash device |
| CN101818818A (en) * | 2010-04-26 | 2010-09-01 | 浙江盾安禾田金属有限公司 | Valve core component of pilot valve and stepped direct-acting electromagnetic valve |
| US20130186487A1 (en) * | 2010-08-06 | 2013-07-25 | Kawasaki Jukogyo Kabushiki Kaisha | Gas pressure regulating valve |
| DE102010055747B3 (en) * | 2010-12-22 | 2012-07-05 | Magna Steyr Fahrzeugtechnik Ag & Co Kg | pressure reducer |
| JP5818498B2 (en) * | 2011-04-22 | 2015-11-18 | 株式会社不二工機 | Directional switching valve |
| CN102705520A (en) * | 2012-06-21 | 2012-10-03 | 太仓凯鑫电子有限公司 | Solenoid valve |
| JP6031931B2 (en) * | 2012-10-03 | 2016-11-24 | 株式会社デンソー | Refrigeration cycle equipment |
| CN103912708A (en) * | 2013-01-08 | 2014-07-09 | 浙江三花股份有限公司 | Pilot-operated electromagnetic valve and assembling method thereof |
| CN105020400A (en) * | 2014-04-24 | 2015-11-04 | 张未鸣 | Independently-guided type piston 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 |
| WO2019001249A1 (en) | 2017-06-30 | 2019-01-03 | 浙江三花汽车零部件有限公司 | Electric valve |
| JP6924499B2 (en) * | 2019-03-13 | 2021-08-25 | 株式会社不二工機 | solenoid 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5060689B2 (en) | 2001-04-13 | 2012-10-31 | 株式会社鷺宮製作所 | Flow control valve and control device for flow control valve |
-
2007
- 2007-05-29 KR KR1020070051949A patent/KR101342780B1/en active IP Right Grant
- 2007-08-07 CN CN2007101412795A patent/CN101122343B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210212A (en) * | 2017-06-30 | 2019-01-15 | 浙江三花汽车零部件有限公司 | A kind of motor-driven valve |
| CN109210212B (en) * | 2017-06-30 | 2020-01-21 | 浙江三花汽车零部件有限公司 | Electric valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101122343A (en) | 2008-02-13 |
| KR20080013701A (en) | 2008-02-13 |
| KR101342780B1 (en) | 2013-12-19 |
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