CN207213207U - A kind of electric expansion valve - Google Patents
A kind of electric expansion valve Download PDFInfo
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- CN207213207U CN207213207U CN201721195354.1U CN201721195354U CN207213207U CN 207213207 U CN207213207 U CN 207213207U CN 201721195354 U CN201721195354 U CN 201721195354U CN 207213207 U CN207213207 U CN 207213207U
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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
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Abstract
A kind of electric expansion valve, including driving part and valve part, the valve part includes the valve body with stream import and flowing path outlet, the valve element being placed in the inner chamber of the valve body and valve port portion, the valve element includes main paragraph and the regulation section towards the valve port portion, the main paragraph is connected with the regulation section by tapering transition section, the regulation section includes the first arc section of at least one section adjusting refrigerant flow rate change curve, the valve port portion is in straight section shape, from the valve port portion to the valve element direction, extension is formed with tapered opening section, the height of the tapered opening section is more than the height in the valve port portion；The refrigerant flow adjustment curve defines pulse number R value of the abscissa for input, ordinate is the refrigerant flow W values in valve port portion, the flow adjustment curve includes valve port and opens section and implement the Flow-rate adjustment section of regulation flow, and the Flow-rate adjustment section is the cumulative curve of curvature.
Description
Technical field
It the utility model is related to control valve technical field, more particularly to a kind of electronic expansion for adjusting refrigerant flow rate
Valve.
Background technology
In all kinds of refrigerating/heating equipment such as air-conditioning, refrigerator, Teat pump boiler, generally use electronic expansion valve regulation stream
The flow of body.
Electric expansion valve generally includes the motor (driving part) with stepper motor and the valve body as execution unit
Part two parts, valve part include the valve body with refrigerant flow path import and flowing path outlet, are placed in valve body inner chamber
Valve element and the valve seat with valve port portion, by the motor input pulse signal to driving part, to drive valve element relative to valve port
The axial movement in portion, by the refrigerant flow in valve port portion, reach the refrigerant flow of regulation flowing path outlet to change to control
Heat exchange balance in air-conditioning or refrigerator, so the flow curve in electric expansion valve is crucial technical characteristic, is directly determined
Refrigeration system operating efficiency.
At Japanese patent publication (JP 2002-122367 publications), disclose a kind of for improvement system refrigerant
Flow curve and a kind of electric expansion valve designed, i.e. Fig. 1 for a kind of electric expansion valve of prior art valve element and valve seat knot
Structure graph of a relation；Fig. 2 is the flow of electronic expansion valve curve map in Fig. 1；Structure setting such as Fig. 1 institutes of its needle-like valve element and valve seat
Show, valve element 314 includes Flow-rate adjustment section 314f, has conical section between Flow-rate adjustment section 314f and main paragraph (accompanying drawing is without mark)
314a, also include conical section 314b in Flow-rate adjustment section 314f lower end.Valve seat 310 includes the valve port 313a and and valve port of taper
The opening portion of 313a connections is formed, and (abscissa represents pulse ratio to its flow of electronic expansion valve curve, indulges substantially as shown in Figure 2
Coordinate representation flow rate ratio).In the art, electric expansion valve has anxious open form flow curve, and for example flow is in P2 ' section pulses
Preceding changes in flow rate is smaller, and changes in flow rate is very fast after P2 ' pulses, can so ensure before P2 ' section pulses Flow-rate adjustment ratio of precision compared with
It is high.Flow before P2 ' pulses also approximately linear, between P2 ' and P1 ' changes in flow rate relation be (Q2 '-Q1 ')/(P2 '-P1 ')=
K, and K is approximately a constant.But although above-mentioned technology can improve essence of the electric expansion valve under small guide vane to a certain extent
Degree, but because whole piece flow curve has catastrophe point, due to being influenceed by foozle, the fluctuation of P3 ' positions is very big, typically has
The difference of 40-60 pulses, make P2 ' points that the difference of at least 40 pulses also occur, flow can not be pre- before and after causing P2 ' points
Know, so as to cause the reduction of whole piece curve adjustment precision.Although simultaneously the changes in flow rate rule before P2 ' points meet (Q2 '-Q1 ')/
(P2 '-P1 ')=K, and K is approximately a constant, but to wonder that one pulse flow increase ratio of change is still highly difficult, so
Expansion valve adjustment number can be increased, the stability of air-conditioning system is influenceed, will also result in Energy Efficiency Ratio decline.Main frame producer flows to fixed point
Amount control accuracy also has excessive dependence, causes many unnecessary controls to waste.So how according to the spy of refrigeration system
Provisioning request, the flow curve for improving electric expansion valve is continued to optimize, is that the art to be made great efforts to solve the problems, such as.
Utility model content
The purpose of this utility model is to provide a kind of flow of electronic expansion valve curve of new optimization, and provides one kind simultaneously
Valve seat construction.A kind of electric expansion valve disclosed in the utility model, including driving part and valve part, the valve part bag
Include the valve body with stream import and flowing path outlet, the valve element being placed in the inner chamber of the valve body and valve port portion, the valve
Core includes main paragraph and the regulation section towards the valve port portion, and the main paragraph passes through tapering transition Duan Lian with the regulation section
Connect, the regulation section includes the first arc section of at least one section adjusting refrigerant flow rate change curve, and the valve port portion is in straight section
Shape, from the valve port portion to the valve element direction, extension is more than institute formed with tapered opening section, the height of the tapered opening section
State the height in valve port portion；The refrigerant flow adjustment curve defines pulse number R value of the abscissa for input, and ordinate is
The refrigerant flow W values in valve port portion, the flow adjustment curve include valve port and open section and implement the Flow-rate adjustment of regulation flow
Section, the Flow-rate adjustment section are the cumulative curve of curvature.
As the further optimization or improvement to above-mentioned technical proposal, technical characteristic therein can also be made following
Conversion：
The regulation section of the valve element also includes the second arc section being connected with first arc section, first arc section
Tangent with second arc section, the radius of curvature of first arc section is more than the radius of curvature of second arc section.
The regulation section of the valve element also includes the three-arc section being connected with second arc section, second arc section
Tangent with the three-arc section, the radius of curvature of second arc section is more than the radius of curvature of the three-arc section.
The radius of curvature of first arc section is twice or more than twice of the radius of curvature of the three-arc section.
The valve port portion and the tapered opening section are opened on valve seat, and the valve seat is fixedly connected with the valve body.
The valve seat is integrated material cutting forming with the valve body.
The electric expansion valve that the utility model provides, poppet head by the tangent different radii of one section of circular arc or multiterminal circle
Arc forms, it is ensured that and it is smaller in the change of small guide vane zone flow, it is larger in big opening amount region changes in flow rate, and both conversion nothings
Catastrophe point, it is easy to air-conditioning system to adjust.Calculated by curve, refrigerant flow change ratio is nearly equal to a constant, so
The umber of pulse adjusted every time is calculated easily by control algolithm, reduces regulation number, the stability of system is improved, reduces system
Energy consumption.Valve seat can flexibly be set, and can be both fixedly connected as an independent part with valve body, can also be with valve sheet
Body is molded as a global facility by way of machining, improves the general applicability of the technical program.
Brief description of the drawings
Fig. 1：The valve element and valve seat construction graph of a relation of a kind of electric expansion valve of background technology；
Fig. 2：A kind of flow of electronic expansion valve curve map in Fig. 1；
Fig. 3：The electronic expansion valve structure figure for the first embodiment that the utility model provides；
Fig. 4：The valve element of electric expansion valve and valve seat construction graph of a relation in Fig. 3；
Fig. 5：Valve element in Fig. 4 is moved to the graph of a relation of h1 points position；
Fig. 6：Valve element in Fig. 4 is moved to the graph of a relation of h2 points position；
Fig. 7：Another valve element and the valve seat construction graph of a relation of electric expansion valve in Fig. 3；
Fig. 8：Flow adjustment curve figure corresponding to Fig. 3 valve elements and valve seat construction；
Fig. 9：The electronic expansion valve structure figure for the second embodiment that the utility model provides.
Embodiment
In order that those skilled in the art is better understood from the technical solution of the utility model, below in conjunction with the accompanying drawings and have
The utility model is described in further detail for body embodiment.
Fig. 3 is refer to, Fig. 3 is the electronic expansion valve structure figure for the first embodiment that the utility model provides.
Electric expansion valve includes being arranged on the coil (not shown) of the periphery of shell 300 made of metal and is arranged on outer
The magnet rotor 200 of the inner circumferential of shell 300, coil and magnet rotor 200 coordinate equivalent to stepper motor jointly, form the drive of electric expansion valve
Dynamic component.
Valve body 400 with stream import 401 and flowing path outlet 402 forms inner chamber 500 with the closed welding of shell 300.
Two adapters are welded with valve body 400 and form stream import 401 and flowing path outlet 402.Valve seat 700 with valve port portion 701
It is weldingly fixed on valve body 400.In the present embodiment, valve seat 700 is an independent part, it is of course also possible to by valve
Seat 700 makes a unitary member with valve body 400, and is molded using machining.Screw mandrel 900 is fixed with magnet rotor 200
Connection, specifically, magnet rotor 200 can be molded by way of injection using screw mandrel 900 as inserts, screw mandrel 200 turns with magnetic
Son 200 rotation and rotate, screw mandrel 900 is connected with needle-like valve element 800.Valve body 400, adapter 600, valve seat 700 and valve element 800
Deng composition valve part.
Nut 100 is fixedly connected on valve body 400, and outer by what is set on the periphery of its internal thread and screw mandrel 900
Screw thread is engaged, and is elevating movement by the convert rotational motion of screw mandrel 900, so as to make elevating movement with movable valve plug 800, with close
Or away from valve port portion 701, so as to realize the regulation of valve port portion aperture, and then realize the regulation of cold medium flux.
Stop mechanism 600 is additionally provided with the top of magnet rotor 300, stop mechanism 600 includes being fixedly connected with screw mandrel 200
Arresting lever 901, and spring guide rail 601, slip ring 602, slip ring 602 can lead under the drive of arresting lever 901 along spring
Rail 601 slides, and spring guide rail 601 is provided with retainer and lower retainer, when slip ring 602 slides into the upper of spring guide rail 601
Stop sliding during retainer, also stop sliding when slip ring 602 slides into the lower retainer of spring guide rail 601, thus control
The distance that arresting lever 901 rotates, and then control the start-stop position of valve element 800.
The operation principle of electric expansion valve is, when needing the flow for adjusting electronic expansion to control change, coil to be applied
Appropriate pulse signal, magnet rotor 200 rotate under the driving of coil, and drive screw mandrel 900 to rotate together with, and screw mandrel 900 is with consolidating
The nut 100 being scheduled on valve body 400 forms screw thread and coordinated, because nut 100 is fixed on valve body 400, so screw mandrel 900
While rotating, moving up and down for axial direction is also carried out, so as to be moved up and down with movable valve plug 800, makes valve element 800 relative to valve seat
700 valve port portion 701 produces axial movement, to change the flow of the refrigerant by valve port portion 701, realizes the stream of refrigeration system
Amount control.
Fig. 4 is the valve element and valve seat construction graph of a relation of electric expansion valve in Fig. 3；Fig. 5 is that valve element is moved to H1 points position
Graph of a relation；Fig. 6 is the graph of a relation that valve element is moved to H2 points position.
As shown in Fig. 4, Fig. 5 and Fig. 6.In this specific embodiment, valve element 800 includes the master being connected with foregoing screw mandrel 900
Body section 801 and the regulation section 802 towards valve seat 700, main paragraph 801 are connected with regulation section 802 by taper transition 803.
In the present embodiment, regulation section 802 includes the first arc section 805.The design of the position relationship of first arc section 805 is subsequently being chatted
State definition, the valve port portion 701 of valve seat 700 is a diameter of Φ 2 straight section, and valve seat 700 is from valve port portion 701 towards the valve element 800
Upwardly extend to form tapered opening section 702.Specific ginseng is formed below by way of the position relationship in the valve port portion 701 with valve seat 700
Number, to design the work that the point of the first arc section 805 of valve element 800 reaches optimizing regulation refrigerant flow curve.
The tapering transition section 803 of valve element 800 can define end diameter be Φ 3, big end be Φ 5, then valve seat 700 in straight
The diameter of phi 2 in the valve port portion 701 of section meets relation：The ＜ Φ 5 of 3 ＜ Φ of Φ 2.Further, can be true due to the ＜ Φ 5 of 3 ＜ Φ of Φ 2
It is scheduled in the tapering transition section 803 of valve element 800, a lateral cross section, the valve port of its diameter and the straight section of valve seat 700 can be found
The diameter of phi 2 in portion 701 is equal, and it is regulating reference surface 804 to define the section.
Because the ＜ Φ 5 of 3 ＜ Φ of Φ 2, electric expansion valve is at closed position, the tapering transition section 803 and core print seat of valve element 800
700 straight section valve port section 702 abuts, so when valve is just opened, the tapering transition section 803 of valve element 800 works, typically at this
Individual region application pulse is small, and valve port is in firm open position, and flow control is unstable, not as normal regulating region, is referred to as " valve
Mouth opens section ".As umber of pulse increases, after general pulse is more than 100, electronic expansion valve core regulation section 802 (arc section 805)
The regulation of control circulation area is formed between the straight section valve port section 702 of core print seat 700, belongs to flow normal regulating scope, is referred to as
" Flow-rate adjustment section ".
In flow of electronic expansion valve normal regulating scope, valve element 800 is with valve seat 700 in a certain relative position (such as X points, figure
In do not mark) when can be as defined as follows：1. regulating reference surface 804 is defined as to the axial distance on the upper top in valve port portion 701
The upper top in Hx, 2. valve port portion 701 is defined as Ax, valve port portion to the vertical beeline of the first arc section 805 of valve element 800
On 701 top to the fore-and-aft distance of the first arc section 805 of valve element 800 be Bx；3. valve port circulation area is defined as Sx, according to
Upper definition, the valve port circulation area Sx in the X points can be calculated as follows：Sx=3.14 × Ax × (Φ 3-Bx)+
3.14×(Φ22-Φ32)/4。
According to defined above, when valve element 800 moves through any two point (and 2 at 1 point to the direction of valve port portion 701 is left
Point), the values (h1, A1, B1, S1) of two points, (h2, A2, B2, S2) can be obtained.Screw thread section square such as screw mandrel 900 is P, screw mandrel
Umber of pulse required for the circle of 900 rotation one is Q, then the arteries and veins required for valve element 800 rises to second point position from first position
Rush number W=(H2-H1)/P*Q.Then the cambered surface of the first arc section 805 is designed by determining Ax and Bx, meets relation
Formula：It is approximately constant value that S1/S2, which opens W powers, (i.e.：K is constant).
According to defined above, implement the stroke range of regulation flow in the valve element 800, or after umber of pulse is more than 100, when
Valve element 800 moves to the direction of valve port portion 701 is left, the equal section of the arbitrarily mobile two sections of axial distances of valve element 800, Ke Yiding
Justice：Circulation area is S3 at valve port during first paragraph start position, and circulation area is S4 at valve port during final position；Second segment
Circulation area is S5 at valve port during start position, and circulation area is S6 at valve port during final position, then meets relation：S3/
S4 and S5/S6 approximately equals are (i.e.：S4/S3≈S6/S5)
Fig. 8 is the flow adjustment curve figure corresponding to Fig. 3 valve elements and valve seat construction.As shown in Figure 8.Flow curve can be determined
Adopted abscissa is the pulse signal R values of input, and ordinate is the flow W values of refrigerant, and flow curve includes valve port and opens section
(L1) and the connection valve port opens section L1 Flow-rate adjustment section L2, opens section L1 in valve port, belongs to small-pulse effect section, valve port is in
Firm open position, flow control is unstable, and this stage mainly opens valve port；It is general as umber of pulse is big in Flow-rate adjustment section L2
After 100, electric expansion valve enters inbound traffics normal regulating scope.It is in Flow-rate adjustment section L2 that the setting of bent curvature of a curve is cumulative, i.e.,
As umber of pulse increases, the steeper concave shaped of flow curve, in whole Flow-rate adjustment section L2 sections, the break not happened suddenly, curve
In smooth curved line.
Arbitrarily set (such as V1 and V2) to valve opening position at 2 points on Flow-rate adjustment section L2, define V1 coordinates be (R1, W1),
V2 coordinates are (R2, W2), then meet relational expression：(R2-R1) open (W2/W1) power be approximately constant (i.e.：K is
Constant).
Flow-rate adjustment section L2 arbitrarily set to valve opening position two sections of equidistant curves of abscissa such as (V3-V4) section and
(V5-V6) section, define (V3-V4) section curve corresponding to ordinate start point/end point be (W3, W4), horizontal stroke corresponding to V3-V4 section curves
Coordinate start point/end point is (R3, R4)；Ordinate start point/end point corresponding to defining (V5-V6) section curve is (W5, W6), V3-V4
Abscissa start point/end point corresponding to section curve is (R5, R6).Under conditions of R6-R5=R4-R3, then meet relational expression：
W6/W5 and W4/W3 approximately equals are (i.e.：W4/W3≈W6/W5)。
Fig. 7 is another preferably valve core structure figure of the electric expansion valve in Fig. 3.As shown in Figure 7.The present embodiment is with before
The scheme difference of stating is, the regulation section 802 of valve element 800 includes three sections of circular arcs, the first arc section 805, the second arc section 806,
Three-arc section 807.And first the radius of curvature of arc section 805 be more than the second arc section 806, the curvature of the second arc section 806
Radius is more than three-arc section 807, the first arc section 805 and 806 tangent, the second arc section 806 of the second arc section and the 3rd circle
Segmental arc 807 is tangent.Set three sections of tangent circular arcs to form the regulation section 802 of valve element 800, be for the ease of optimization design because
One section of circular arc of setting, which is difficult to reach, in the parameter request of the complicated refrigerant circulation area of some systematic comparisons, on valve element wants
Optimization stream adjustment curve, such setting can simplify design.
Compared according to the control requirement of general electric expansion valve and parameter designing, it is preferred that as used three sections of tangent circles
Arc, the curvature of first paragraph circular arc 805 are twice or more than twice of the curvature of the 3rd section of circular arc 807.
Can certainly only have two sections of tangent circular arcs to form valve element, can also reach the purpose of needs, will not be repeated here.
It should be understood that it should also meet in the scheme of the setting multi-section circular arc of regulation section 802 of valve element 800 foregoing
Relational expression, it illustrates with foregoing, will not be repeated here.
Fig. 9 is refer to, Fig. 9 is the electronic expansion valve structure figure for the second embodiment that the utility model provides.
It should be noted that present embodiment and first embodiment exist in overall structure and each modular construction it is poor
It is different, for convenience, by the part for playing phase same-action in each part in electric expansion valve use same naming method with
And reference.
Electric expansion valve includes being arranged on the coil (not shown) of the periphery of shell 300 made of metal and is arranged on outer
The magnet rotor 200 of the inner circumferential of shell 300, coil and magnet rotor 200 coordinate equivalent to stepper motor jointly, form the drive of electric expansion valve
Dynamic component.
Valve body 400 with stream import 401 and flowing path outlet 402 forms inner chamber 500 with the closed welding of shell 300.
Two adapters are welded with valve body 400 and form stream import 401 and flowing path outlet 402.Valve body 400 is provided with straight section shape
Valve port portion 701, in the present embodiment, valve port portion 701 directly opens up on valve body 400, it is of course also possible to individually set again
A valve seat is put, and valve port portion 701 is opened on valve seat, the valve seat with valve port portion 701 is then passed through into the side such as welding again
Formula is fixed on valve body.
In the top of valve body 400, cover lid 403 is also fixedly connected with, cover lid 403 can pass through punching using stainless steel material
The mode of pressure is made.Cover lid 403 can be fixed with shell 300 by way of welding, so as to surround inner chamber 500.
Magnetic rotor component includes rotor 200 made of connecting plate 201 and magnetic material, in processing, will can connect
Plate 201 is used as inserts, is put into mould, and by modes such as injections, magnet rotor 200, connecting plate are molded on connecting plate 201
Through hole is offered on 201, the arresting lever 901 being fixedly connected with connecting plate passes from through hole, hangs down what is surrounded into magnet rotor 200
In inner chamber.
Screw mandrel 900 is fixedly connected with connecting plate 201, can be specifically fixed by the way of welding.
Nut 100 is fixed by connection sheet 101 and cover lid 403.Specifically, can be by connection made of sheet metal
Piece 101 is put into mould as inserts, is molded nut by way of injection, is then again welded connection sheet 101 and cover lid 403
Connect fixation.
Nut 100 is engaged by its internal thread with the external screw thread set on the periphery of screw mandrel 900, by the rotation of screw mandrel 900
Transhipment turn turns to elevating movement, so as to movable valve plug 800 make elevating movement, with close to or away from valve port portion 701, so as to realize
The regulation of valve port portion aperture, and then realize the regulation of cold medium flux.
Stop mechanism 600 is additionally provided between magnet rotor 300 and nut 100, stop mechanism 600 includes arresting lever 901,
And spring guide rail 601 on the periphery of nut 100, slip ring 602 are arranged on, slip ring 602 can be in the drive lower edge of arresting lever 901
Spring guide rail 601 to slide, spring guide rail 601 is provided with retainer and lower retainer, when slip ring 602 slides into spring guide rail
Stop sliding during 601 upper retainer, also stop sliding when slip ring 602 slides into the lower retainer of spring guide rail 601, so
The distance of the rotation of arresting lever 901 is just controlled, and then controls the start-stop position of valve element 800.Certainly lower retainer simultaneously not only limits
In being arranged in spring guide rail 601, retainer under can also being set on the body of nut 100, support the slide downward of slip ring 602
Contact the lower retainer on nut and realize stop.
Guide member 404 is also fixedly connected with valve body 400, guide member 404 is a part in substantially tubular,
The internal perisporium of its upper end can be oriented to needle part, when the periphery wall of its upper end can assemble to nut 100
It is oriented to.In addition, the guide part being oriented to valve element 800 is additionally provided with the lower end of guide member 404.Pass through guide member
404 setting so that the axiality between nut, valve element, valve port portion is more preferable.Valve body is stretched into the bottom of guide member 404
In 400 inner chamber, it is also prevented from refrigerant and directly impacts needle, there is the technique effect for reducing electric expansion valve operation noise.
For in present embodiment, structure and matching relationship between valve element 800 and valve port portion 701, being referred to first
Embodiment is understood that this is no longer going to repeat them.
Electric expansion valve disclosed in the utility model, poppet head by the tangent different radii of one section of circular arc or multistage circle
Arc forms, it is ensured that and it is smaller in the change of small guide vane zone flow, it is larger in big opening amount region changes in flow rate, and both conversion nothings
Catastrophe point, it is easy to air-conditioning system to adjust.Electric expansion valve disclosed in another aspect the utility model, changes in flow rate ratio are normal close to one
Number, it is easy to the umber of pulse adjusted every time is calculated by control algolithm, reduces regulation number, improves the stability of system, drop
The energy consumption of low system.And valve seat can flexibly be set, can be both fixedly connected as an independent part with valve body,
It can be molded with valve body as a global facility by way of machining, improve generally being applicable for the technical program
Property.
It should be noted that specification of the present utility model refer in full up, down, left, right, before and after, the orientation such as inside and outside
Word is for being easy to illustrate the technical solution of the utility model, and is defined by the mark of Figure of description, can not be interpreted as
To limitation of the present utility model.
Due to the finiteness of literal expression, and unlimited concrete structure objectively be present, for the general of the art
For logical technical staff, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of electric expansion valve, it is characterised in that including driving part and valve part, the valve part is included with stream
The valve body of road import and flowing path outlet (400), the valve element (800) being placed in the inner chamber (500) of the valve body (400) and valve
Oral area (701), the valve element (800) includes main paragraph (801) and the regulation section (802) towards the valve port portion (701), described
Main paragraph (801) is connected with the regulation section (802) by tapering transition section (803), and the regulation section (802) includes at least one
The first arc section (805) of section adjusting refrigerant flow rate change curve,
The valve port portion (701) is in straight section shape, and from the valve port portion (701) to the valve element (800) direction, extension is formed with cone
Shape open section (702), the height of the tapered opening section (702) are more than the height of the valve port portion (701)；The cold-producing medium stream
Amount adjustment curve defines pulse number R value of the abscissa for input, and ordinate is the refrigerant flow W values of valve port portion (701),
The flow adjustment curve includes valve port and opens section (L1) and implement the Flow-rate adjustment section (L2) of regulation flow, the Flow-rate adjustment
Section (L2) is the cumulative curve of curvature.
2. electric expansion valve as claimed in claim 1, it is characterised in that the regulation section (802) of the valve element (800) also includes
The second arc section (806) being connected with first arc section (805), first arc section (805) and second circular arc
Section (806) is tangent, and the radius of curvature of first arc section (805) is more than the radius of curvature of second arc section (806).
3. electric expansion valve as claimed in claim 2, it is characterised in that the regulation section (802) of the valve element (800) also includes
The three-arc section (807) being connected with second arc section (806), second arc section (806) and the three-arc
Section (807) is tangent, and the radius of curvature of second arc section (806) is more than the radius of curvature of the three-arc section (807).
4. electric expansion valve as claimed in claim 3, it is characterised in that the radius of curvature of first arc section (805) is
Twice or more than twice of the radius of curvature of the three-arc section (807).
5. electric expansion valve as claimed in claim 1, it is characterised in that the valve port portion (701) and the tapered opening section
(702) it is opened on valve seat (700), the valve seat (700) is fixedly connected with the valve body (400).
6. electric expansion valve as claimed in claim 5, it is characterised in that the valve seat (700) is with the valve body (400)
Integral material cutting forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721195354.1U CN207213207U (en) | 2017-09-18 | 2017-09-18 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721195354.1U CN207213207U (en) | 2017-09-18 | 2017-09-18 | A kind of electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207213207U true CN207213207U (en) | 2018-04-10 |
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ID=61821325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721195354.1U Active CN207213207U (en) | 2017-09-18 | 2017-09-18 | A kind of electric expansion valve |
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| CN (1) | CN207213207U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541935A (en) * | 2019-08-30 | 2019-12-06 | 珠海格力电器股份有限公司 | Low-noise electronic expansion valve and refrigerating machine |
| CN112146313A (en) * | 2019-06-28 | 2020-12-29 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN112901793A (en) * | 2019-12-04 | 2021-06-04 | 伊希欧1控股有限公司 | Expansion valve |
| WO2021253985A1 (en) * | 2020-06-17 | 2021-12-23 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2021253984A1 (en) * | 2020-06-17 | 2021-12-23 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2022257706A1 (en) * | 2021-06-11 | 2022-12-15 | 浙江盾安人工环境股份有限公司 | Flow regulation valve |
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2017
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| CN110541935A (en) * | 2019-08-30 | 2019-12-06 | 珠海格力电器股份有限公司 | Low-noise electronic expansion valve and refrigerating machine |
| CN112901793A (en) * | 2019-12-04 | 2021-06-04 | 伊希欧1控股有限公司 | Expansion valve |
| WO2021253985A1 (en) * | 2020-06-17 | 2021-12-23 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2021253984A1 (en) * | 2020-06-17 | 2021-12-23 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| KR20230012613A (en) * | 2020-06-17 | 2023-01-26 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | electronic expansion valve |
| KR102673402B1 (en) | 2020-06-17 | 2024-06-10 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | electronic expansion valve |
| WO2022257706A1 (en) * | 2021-06-11 | 2022-12-15 | 浙江盾安人工环境股份有限公司 | Flow regulation valve |
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