CN103836211A - Valve seat assembly of electronic expansion valve and manufacturing method of valve seat assembly - Google Patents
Valve seat assembly of electronic expansion valve and manufacturing method of valve seat assembly Download PDFInfo
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- CN103836211A CN103836211A CN201410113388.6A CN201410113388A CN103836211A CN 103836211 A CN103836211 A CN 103836211A CN 201410113388 A CN201410113388 A CN 201410113388A CN 103836211 A CN103836211 A CN 103836211A
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- valve
- valve seat
- central axis
- electric expansion
- expansion valve
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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
- F16K1/42—Valve seats
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
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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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses a valve seat assembly of an electronic expansion valve. The valve seat assembly of the electronic expansion valve is characterized by comprising a valve seat and a second connecting pipe, wherein the valve seat is provided with a valve cavity, the second connecting pipe is fixedly connected with the side wall of the valve seat, the first central axis of the second connecting pipe is perpendicular to the second central axis of the valve seat, and the edge face of the second connecting pipe does not exceed the inner circumferential face of the valve cavity in any section where the first central axis is located. The invention further provides a manufacturing method of the valve seat assembly of the electronic expansion valve. According to the valve seat assembly of the electronic expansion valve, it is ensured that the end of the second connecting pipe cannot extend into the valve cavity or damage the integrality of the valve cavity, the noise caused by irregular shape of the valve cavity when a refrigerant flows can be lowered, moreover, the matching length of the connecting pipe and the valve seat can be fully ensured, welding strength is improved, and the uniformity of the assembly size of the connecting pipe can be ensured.
Description
Technical field
The present invention relates to control valve technical field, relate in particular to a kind of for regulating the electric expansion valve of fluid flow.
Background technique
In all kinds of refrigeration, the heating devices such as air-conditioning, refrigerator, heat pump water heater, conventionally adopt the flow of electronic expansion valve regulation fluid.In addition, electric expansion valve also can be used as pilot valve and is applied in solenoid valve.
Electric expansion valve generally includes valve component, nut assembly, needle screw component, rotor assembly, valve component generally includes valve seat and connecting tube, on valve seat, there is valve port, the common integrally welded formation valve component of valve seat and connecting tube, the needle of needle screw component is arranged in the nut of nut assembly.
In order to solve valve port and needle, the coaxality problem of the parts such as nut, in the patent application that claimant is 201110374661.7 at application number, proposed to arrange valve core case 11 on valve seat, as shown in Figure 1, and top guide section and bottom guide section are set on nut, valve core case 11 is with valve seat 12 and be fixed on the adapter of first on valve seat 12 13, second takes over 14 common formation valve base parts, the inner chamber of valve seat 12 forms valve pocket 121, the lower end inner circle wall of the periphery wall of the upper end of valve core case 11 and nut 32 is fixed, the inner circle wall of the upper end of valve core case 11 and needle 21 form Spielpassung, and provide guiding to needle 21.And the upper end of nut 32 pair provides guiding with the screw mandrel 22 that needle is fixed as one.The design of this structure has solved the technical problem of needle and valve port coaxality.But still there is certain room for improvement aspect reduction noise in the electric expansion valve of this structure.
As shown in Figure 1, because the second adapter 14 is inserted in valve seat 12, the end of taking over is stretched in the valve pocket 121 that valve seat 12 forms, and has destroyed so to a certain extent the integrity of valve pocket 121, and making is that columned space is (after fit on valve core case 11 and needle 21 originally, this space can be similar to thinks annular space) become irregular, when refrigerant enters after valve pocket 121, in flow process, easily produce and disturb, thereby cause the bubble in liquid refrigerants to break, thereby produce noise.In addition, the second end of taking over is stretched in valve pocket, cannot control exactly the length that end is stretched into, and like this, just cannot ensure to take over the conformity of fitted position.
Therefore, how to develop one on the basis of existing technology, by valve pocket and runner are designed, reduce the noise that refrigerant produces, and can make to take over fitted position and be consistent, be conducive to batch production, be those skilled in the art's technical barriers urgently to be resolved hurrily simultaneously.
Summary of the invention
The object of this invention is to provide a kind of valve component of electric expansion valve, the improvement design by valve pocket and runner, can effectively avoid interference that refrigerant is caused, thereby reduce noise.For this reason, the present invention takes following technological scheme:
A valve component for electric expansion valve, is characterized in that:
Comprise the valve seat that is provided with valve pocket; The second adapter being fixedly connected with the sidewall of described valve seat, the vertical setting of the second central axis of described second the first central axis of taking over and described valve seat;
On the arbitrary section along described the first central axis place, the described second edge surface of taking over is no more than the inner peripheral surface of described valve pocket.
Preferably, described valve seat comprise basic portion and with the integral bottom with bottom hole of described basic portion, in described basic portion, offer side opening, described second take over coordinate and be fixedly connected with described side opening.
Preferably, described the second adapter has main part, minor diameter part and edge part, and described minor diameter part stretches into described side opening, and described edge surface is positioned on the inner peripheral surface of described valve pocket.
Alternatively, it is characterized in that, described second takes over as straight tube, and described main part is also provided with the location pit for locating.
Alternatively, described second takes over as bend pipe, has the horizontal segment that coordinates with described side opening and with the substantially vertical setting of described horizontal segment vertical section.
Preferably, described the second adapter coordinates and is welded and fixed by press-fiting with described valve seat.
Electric expansion valve valve component provided by the invention, the intersection line of the sidewall of the edge of the second adapter and valve seat is set as being no more than to the inner circle contour of valve pocket, ensure that the second end of taking over can not extend in valve pocket, can not destroy the integrity of valve pocket, be conducive to improve the noise causing because cavity geometry is irregular when refrigerant flows.
Meanwhile, the present invention also provides a kind of valve component manufacture method of electric expansion valve, it is characterized in that, comprises the following steps:
11) valve seat and valve core case are located by laser beam welding or close-fitting;
21) the first adapter is press fit in the 3rd stepped part of described valve core case;
31) the second adapter is pressed fit in the side opening of valve seat.
41) implement welding, valve core case, valve seat, the first adapter, second are taken over and form valve component.
Wherein, above-mentioned steps 11), step 21) and step 31) order can exchange.
Preferably, in implementation step 31) before, further comprising the steps of:
30) processing edge part, the end face that adopts the external cylindrical surface isometrical or bigger with the internal diameter of valve pocket to take over along the direction cutting second perpendicular to the first central axis, thus form edge part.
Preferably, it is characterized in that described step 31) be specially:
Adopt machinery location or photoelectricity location, the 3rd central axis of side opening is arranged on to specified position, and makes the first central axis and described the 3rd central axes of the second adapter, take over described valve seat and be fixed with pressure described second.
Preferably, while being press-fitted, valve seat inside is also provided with locating stud, and the internal diameter of the external diameter of described locating stud and the valve pocket of described valve seat is roughly the same.
The above-mentioned method that is press-fitted, can fully ensure to take over and the length of thread engagement of valve seat, is conducive to improve weld strength, and can ensures to take over the conformity of fitted position.
Brief description of the drawings
Fig. 1: the structural representation of a kind of electric expansion valve of prior art;
Fig. 2: electronic expansion valve structure schematic diagram provided by the invention;
The D-D sectional view of Fig. 3: Fig. 2;
Fig. 4: the structural representation of valve core case in Fig. 2;
Fig. 5: the valve seat construction schematic diagram in Fig. 2;
Fig. 6: the first mode of execution schematic diagram that electric expansion valve provided by the invention second is taken over;
Fig. 7: the second machining sketch chart of taking over shown in Fig. 6;
Fig. 8: the second mode of execution schematic diagram that electric expansion valve provided by the invention second is taken over;
Fig. 9: the second machining sketch chart of taking over shown in Fig. 8;
Figure 10: A-A sectional view in Fig. 9;
Figure 11: electric expansion valve second provided by the invention is taken over and is press-fitted schematic diagram.
Embodiment
In order to make those skilled in the art better understand technological scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 2, Fig. 2 is electronic expansion valve structure schematic diagram provided by the invention.
Electric expansion valve provided by the invention comprises valve component, nut assembly, needle screw component and magnetic rotor component.
Nut assembly comprises nut 32 and connecting sheet 31, and connecting sheet 31 is one-body molded as inserts and nut 32, and connecting sheet 31 is welded and fixed with valve seat 12.The internal thread segment that nut 32 arranges by middle part and screw mandrel 22 screw-thread fit.Inner edge portion in nut 32 bottoms is provided with guide section.In the endoporus on the top of nut 32, be provided with the screw mandrel guide section coordinating with screw mandrel 22, screw mandrel guide section can be arranged on nut 32 and upside or downsides screw mandrel 22 matching thread sections, the guiding while rotation to be conducive to screw mandrel.The excircle on the top of nut 32 is set with spring guide rail 33 and stop slip ring 34.
The needle 21 that needle screw component comprises screw mandrel 22 and driven by screw mandrel 22, in the present embodiment, one end of screw mandrel 22 is connected with needle 21, and the other end is connected with magnetic rotor component 41.Wherein, screw mandrel 22 is set to mutually to rotate with needle 21, but can relatively not throw off.
The external stability of valve seat 12 has outer cover 5, thereby the space that forms sealing is provided with magnetic rotor component 41, in the present embodiment in outer cover, magnetic rotor component 41 comprises magnet rotor body, rotor retainer 42 and is connected the connecting body of the two, and magnetic rotor component is fixed on the upper end of screw mandrel 22.
The working principle of above-mentioned electric expansion valve is, magnetic rotor component 41 is rotated under the driving of electromagnetic coil (not shown), and drive screw mandrel 22 together to rotate, screw mandrel 22 passes through screw-thread fit with nut 32, like this, screw mandrel 22, in rotating, also carries out axial moving up and down, thereby drive needle 21 to move up and down, thereby make needle 21 realize on-off action to valve port 112.
Please refer to Fig. 3, Fig. 4, Fig. 5, wherein, Fig. 3 is the D-D sectional view of Fig. 2, and Fig. 4 is the structural representation of valve core case in Fig. 2, and Fig. 5 is the valve seat construction schematic diagram in Fig. 2.
Valve component comprises valve core case 11 and valve seat 12.Valve seat 12 be bottom with the roughly tubular structure of valve core case matching hole, its inner valve pocket 121 that forms.In the present embodiment, valve component also further comprises the first connecting tube 13 and the second connecting tube 14.Valve core case 11, valve seat 12, the first connecting tube 13, the second connecting tube 14 are fixedly connected with, thereby form valve component.
As shown in Figure 4, valve core case 11 is tubular structure substantially, has base portion 114, is provided with first step portion 115 in the upper end of base portion 114, and lower end is disposed with second step portion 116 and the 3rd stepped part 117.Be processed with valve port 112 in the underpart of valve core case 11, in the present embodiment, valve port 112 comprises the first tapering 1121, straight section portion 1122 and the second tapering 1123 that set gradually.Wherein, the flow of electric expansion valve, for coordinating with needle 21, is controlled in the first tapering 1121.
In the circumferential side wall of valve core case 11, be provided with some intercommunicating pores 113, the inner chamber of valve core case 11 is communicated with valve pocket 121.
As shown in Figure 5, valve seat 12 is roughly cup-shaped, have the basic 12b of portion and with the integrated bottom 12e of the basic 12b of portion, on the 12e of bottom, offer bottom hole 12d, for being fixedly connected with valve core case 11.On the sidewall of the basic 12b of portion, offer side opening 12c, when assembling, second takes over 14 is press-fited and coordinates and be welded and fixed with valve seat 12 by side opening 12c.
The top of valve seat 12 is provided with stepped part 12a, for being fixedly connected with outer cover 5.When installation, outer cover 5 is resisted against to stepped part 12a upper, like this, can ensures the coaxality of outer cover 5 and valve seat 12.
The valve pocket 121 that the basic 12b of portion of valve seat 12 forms has inner peripheral surface 1211.
Please refer to Fig. 6, Fig. 6 is the first mode of execution schematic diagram that electric expansion valve provided by the invention second is taken over.
Second to take over 14 be bend pipe, comprises main part 141 and the horizontal segment 1411 for coordinating with valve seat 12, and bending afterwards with vertical section 1412 of horizontal segment 1411 substantially vertical settings.It should be noted that the level of present embodiment indication and be vertically taking the view shown in Fig. 6 as benchmark can not be interpreted as the restriction to protection domain.
In the end of horizontal segment 1411, be provided with the minor diameter part 142 that one section of diameter is less than main part 141, wherein, minor diameter part 142 directly and the side opening 12c offering on valve seat 12 be press-fitted.Particularly, can be along perpendicular to the direction of valve seat central axis, side opening 12c being set on the sidewall of valve seat 12, then the minor diameter part of the second adapter 14 142 being press-fitted to rear enforcement with side opening 12c is welded and fixed, like this, the first central axis S1 of the second adapter 14 becomes vertical setting with the second central axis S2 of valve seat 12.
The end of minor diameter part 142 is also provided with the edge part 143 that is definite shape, edge part 143 has edge surface 1431, in the present embodiment, after minor diameter part 142 and valve seat 12 assemble, taking the first central axis S1 as benchmark, all through on the cross section of S1, the edge surface 1431 of the second adapter 14 is no more than the inner peripheral surface 1211 of valve pocket 121." being no more than " that this place refers to, refers to that, on any cross section through the first central axis S1, the second adapter 14 does not all enter the inside of inner peripheral surface 1211.
Although can there is certain gap with inner peripheral surface 1211 in the edge surface 1431 of the second adapter 14, also can play similar effect, but as preferred embodiment, edge surface 1431 can be set to overlap with inner peripheral surface 1211, be that minor diameter part 142 stretches into after side opening 12c, edge surface 1431 is positioned on inner peripheral surface 1211.Particularly, when processing edge part 143, as shown in Figure 7, adopt the external cylindrical surface 50 isometrical or bigger with the internal diameter of valve pocket 121 to take over 14 end face along the direction cutting second perpendicular to the first central axis S1.Above-mentioned external cylindrical surface 50 is virtual concepts, in practical operation, can be cylindrical cutting tool, can be also the mode that adopts line cutting, only needs on the end face of the second adapter 14, to cut the edge surface 1431 that cross section is circular arc.The technology enlightenment that those skilled in the art provide based on the application, can apply other any suitable processing modes in related domain and process edge surface 1431 at the end face of taking over.For the assembling that ensures to take over, cutting direction direction along vertical section 1412 (being perpendicular to paper direction in Fig. 7) also in perpendicular to the first central axis S1, and the medial axis of cylndrical surface 50 is crossing with the first central axis S1, thereby form edge part 143 and edge surface 1431, like this, edge surface 1431 just can overlap with inner peripheral surface 1211, is positioned on same circumferential surface.
Please refer to Figure 11, electric expansion valve second provided by the invention is taken over and is press-fitted schematic diagram.In order to ensure that edge surface 1431 overlaps with inner peripheral surface 1211, in the time press-fiting, at the interior placement positioning pin 60 of valve pocket 121, the cross section of locating stud 60 is ring, its internal diameter is set to the external diameter of valve core case 11 roughly equal, its external diameter is set to the internal diameter of the valve pocket 121 of valve seat 12 roughly equal, like this, when the second adapter 14 that processes edge part 143 is pressed into, in the time that edge part 143 touches locating stud 60, will stop moving, like this, just can ensure that the inner peripheral surface 1211 of edge surface 1431 and valve seat is positioned on same circumferential surface.This processing mode, while being conducive to produce in batches, ensures the length of thread engagement of adapter and valve seat, is conducive to improve weld strength, and can ensures to take over the conformity of fitted position.
Below in conjunction with Fig. 8-Figure 10, illustrate that second takes over the second mode of execution of 14.
Please refer to Fig. 8, Fig. 8 is the second mode of execution schematic diagram that electric expansion valve provided by the invention second is taken over, and Fig. 9 is the second machining sketch chart of taking over shown in Fig. 8, and Figure 10 is A-A sectional view in Fig. 6 and Fig. 9.
The second adapter 14 is straight tube,, compared with the first mode of execution, does not possess bending part, owing to not possessing vertical section corresponding with the first mode of execution, and in the time of processing edge part 143 and assembling, the just direction of necessary consideration edge surface 1431.For smooth assembling, one or more location pit 145 is set on the outer circle wall of main part 141, the 4th central axis S4 of location pit 145 and the first central axis S1 of the second adapter 14 are crossing, now, it is not shown that the 4th central axis S4 and the first central axis S1 limit plane P 1().
In the time of processing edge part 143, position with location pit 145, adopt the external cylindrical surface 50 isometrical or bigger with the internal diameter of valve pocket 121 along taking over 14 end face with the perpendicular direction cutting second of plane P 1, and the first central axis S1 of the medial axis of external cylindrical surface 50 and the second adapter 14 is crossing, thereby form edge part 143 and edge surface 1431.Above-mentioned external cylindrical surface 50 is virtual concepts, in practical operation, can be cylindrical cutting tool, can be also the mode that adopts line cutting, only needs on the end face of the second adapter 14, to cut the edge surface 1431 that cross section is circular arc.The technology enlightenment that those skilled in the art provide based on the application, can apply other any suitable processing modes in related domain and process edge surface 1431 at the end face of taking over.In the time press-fiting, second takes over 14 locates with location pit 145, makes the central axis S2 of plane P 1 perpendicular to valve seat 12.Wherein, the axis of cutting tool can become α angle with the 3rd central axis S3 on projection plane, and in the time press-fiting, the 3rd central axis S3 also becomes α angle with the second central axis S2 on projection plane.
In addition, above-mentioned location pit 145 is also applicable to the situation that the second adapter 14 is bend pipe, as shown in Figure 6, and simultaneously identical with reference to the A-A view of figure 10(Fig. 6 and Fig. 9).Second 14 methods that can first adopt above-mentioned the second mode of execution to provide are provided, and at main part, location pit 145 are set, and then process edge surface 1431.Recycling location pit 145 positions and bends operation, forms bend pipe.This manufacture method can be produced in enormous quantities easily, and can ensure the conformity of product size.
The description of those skilled in the art based on above-mentioned mode of execution, can make and be equal to accordingly replacement.
The valve component manufacture method of electric expansion valve provided by the invention, specifically can comprise the following steps:
11) by valve seat 12 with valve core case 11 is located by laser beam welding or close-fitting location;
21) the first adapter 13 is press fit in the 3rd stepped part 117 of described valve core case 11;
31) the second adapter 14 is pressed fit in the side opening 12c of valve seat 12.
41) implement welding, make valve core case 11, valve seat 12, the first adapter 13, the second adapter 14 form valve components.
Be understandable that above-mentioned steps 11), step 21) and step 31) order can exchange.The process that adapter press-fits has a detailed description hereinbefore, repeats no more herein.
In implementation step 31) before, further comprising the steps of:
30) processing edge part 143, adopts the external cylindrical surface isometrical or bigger with the internal diameter of valve pocket 121 to take over 14 end face along the direction cutting second perpendicular to the first central axis S1, thereby forms edge part 143.
Step 31) the step that press-fits be specially: adopt machinery location or photoelectricity location, the 3rd central axis S3 of side opening 12c is arranged on to specified position, and the central axis S1 of the second adapter 14 is overlapped with the 3rd central axis S3, thereby the second adapter 14 is fixed with pressure with described valve seat 12.
The above is only the description of preferred implementation of invention, it should be pointed out that up, down, left, right, before and after in specification of the present invention, the orientation word such as inside and outside just more for clarity, should not regard limitation of the present invention as.Due to the finiteness of literal expression; and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a valve component for electric expansion valve, is characterized in that:
Comprise the valve seat (12) that is provided with valve pocket (121);
The second adapter (14) being fixedly connected with the sidewall of described valve seat (12), described second takes over first central axis (S1) of (14) and the vertical setting of the second central axis (S2) of described valve seat (12);
On the arbitrary section along described the first central axis (S1) place, the described second edge surface (1431) of taking over (14) is no more than the inner peripheral surface (1211) of described valve pocket (121).
2. the valve component of electric expansion valve as claimed in claim 1, it is characterized in that, described valve seat (12) comprises basic portion (12b) and the bottom (12e) with the integral band bottom hole of described basic portion (12b) (12d), in described basic portion (12b), offer side opening (12c), described second takes over (14) coordinates and is fixedly connected with described side opening (12c).
3. the valve component of electric expansion valve as claimed in claim 2, it is characterized in that, described second takes over (14) has main part (141), minor diameter part (142) and edge part (143), described minor diameter part (142) stretches into described side opening (12c), and described edge surface (1431) is positioned on the inner peripheral surface of described valve pocket (121).
4. the valve component of electric expansion valve as claimed in claim 3, is characterized in that, described the second adapter (14) is straight tube, and described main part (141) is also provided with the location pit (145) for locating.
5. the valve component of electric expansion valve as claimed in claim 3, it is characterized in that, described second to take over (14) be bend pipe, have with the horizontal segment (1411) of described side opening (12c) cooperation and with vertical section (1412) of the substantially vertical setting of described horizontal segment (1411).
6. the valve component of the electric expansion valve as described in claim 4 or 5, is characterized in that, described second takes over (14) coordinates and is welded and fixed by press-fiting with described valve seat (12).
7. a valve component manufacture method for electric expansion valve, is characterized in that, comprises the following steps:
11) by valve seat (12) with valve core case (11) is located by laser beam welding or close-fitting location;
21) the first adapter (13) is press fit in the 3rd stepped part (117) of described valve core case (11);
31) the second adapter (14) is pressed fit in the side opening (12c) of valve seat (12).
41) implement welding, make valve core case (11), valve seat (12), first take over (13), second and take over (14) formation valve component.
Wherein, above-mentioned steps 11), step 21) and step 31) order can exchange.
8. the valve component manufacture method of electric expansion valve as claimed in claim 7, is characterized in that,
In implementation step 31) before, further comprising the steps of:
30) processing edge part (143), adopts the external cylindrical surface isometrical or bigger with the internal diameter of valve pocket (121) to take over the end face of (14) along the direction cutting second perpendicular to the first central axis (S1), thereby forms edge part (143).
9. the valve component manufacture method of electric expansion valve as claimed in claim 7, is characterized in that, described step 31) be specially:
Adopt machinery location or photoelectricity location, the 3rd central axis (S3) of side opening (12c) is arranged on to specified position, and first central axis (S1) of the second adapter (14) is overlapped with described the 3rd central axis (S3), take over (14) by described second and be fixed with pressure with described valve seat (12).
10. the valve component manufacture method of electric expansion valve as claimed in claim 9, it is characterized in that, while being press-fitted, valve seat (12) inside is also provided with locating stud (60), and the internal diameter of the valve pocket (121) of the external diameter of described locating stud (60) and described valve seat (12) is roughly the same.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410113388.6A CN103836211A (en) | 2014-03-25 | 2014-03-25 | Valve seat assembly of electronic expansion valve and manufacturing method of valve seat assembly |
| PCT/CN2014/086175 WO2015143845A1 (en) | 2014-03-25 | 2014-09-10 | Valve base assembly for electronic expansion valve and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410113388.6A CN103836211A (en) | 2014-03-25 | 2014-03-25 | Valve seat assembly of electronic expansion valve and manufacturing method of valve seat assembly |
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| Publication Number | Publication Date |
|---|---|
| CN103836211A true CN103836211A (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410113388.6A Pending CN103836211A (en) | 2014-03-25 | 2014-03-25 | Valve seat assembly of electronic expansion valve and manufacturing method of valve seat assembly |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015143845A1 (en) * | 2014-03-25 | 2015-10-01 | 浙江三花股份有限公司 | Valve base assembly for electronic expansion valve and manufacturing method thereof |
| CN105972233A (en) * | 2016-07-20 | 2016-09-28 | 珠海格力电器股份有限公司 | Expansion valve, refrigerant cycle system and air conditioner |
| CN106369208A (en) * | 2016-08-31 | 2017-02-01 | 浙江新三荣制冷有限公司 | Mute electronic expansion valve |
| CN106369893A (en) * | 2016-11-21 | 2017-02-01 | 珠海格力电器股份有限公司 | Air conditioner and electronic expansion valve of air conditioner |
| CN106705510A (en) * | 2015-07-17 | 2017-05-24 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and valve seat component thereof |
| CN107449187A (en) * | 2017-09-19 | 2017-12-08 | 广东美的制冷设备有限公司 | Electric expansion valve |
| JP2018119595A (en) * | 2017-01-25 | 2018-08-02 | 株式会社鷺宮製作所 | Motor valve and refrigeration cycle system |
| CN108397558A (en) * | 2018-05-14 | 2018-08-14 | 浙江中宝自控元件有限公司 | A kind of high cooperation precision electric valve |
| CN108692081A (en) * | 2017-04-07 | 2018-10-23 | 浙江盾安机械有限公司 | Electric expansion valve |
| WO2019148693A1 (en) * | 2018-01-31 | 2019-08-08 | 浙江三花制冷集团有限公司 | Electric valve and manufacturing method thereof |
| CN111102367A (en) * | 2018-10-27 | 2020-05-05 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| EP3964738A4 (en) * | 2019-05-10 | 2022-06-29 | Zhejiang Dunan Artificial Environment Co., Ltd. | Nut assembly for electronic expansion valve, electronic expansion valve, and limiting element mounting method |
| WO2023104542A1 (en) * | 2021-12-08 | 2023-06-15 | Danfoss Power Solutions Aps | Shock-valve |
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| WO2019148693A1 (en) * | 2018-01-31 | 2019-08-08 | 浙江三花制冷集团有限公司 | Electric valve and manufacturing method thereof |
| KR20200086718A (en) * | 2018-01-31 | 2020-07-17 | 저장 산후아 클라이메이트 앤드 어플라이언스 컨트롤스 그룹 컴퍼니 리미티드 | Electric valve and its manufacturing method |
| KR102313777B1 (en) | 2018-01-31 | 2021-10-15 | 저장 산후아 클라이메이트 앤드 어플라이언스 컨트롤스 그룹 컴퍼니 리미티드 | Electric valve and its manufacturing method |
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| CN111102367A (en) * | 2018-10-27 | 2020-05-05 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| EP3964738A4 (en) * | 2019-05-10 | 2022-06-29 | Zhejiang Dunan Artificial Environment Co., Ltd. | Nut assembly for electronic expansion valve, electronic expansion valve, and limiting element mounting method |
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