CN105508623A - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
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- CN105508623A CN105508623A CN201410500188.6A CN201410500188A CN105508623A CN 105508623 A CN105508623 A CN 105508623A CN 201410500188 A CN201410500188 A CN 201410500188A CN 105508623 A CN105508623 A CN 105508623A
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- valve seat
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- core
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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
The invention provides an electronic expansion valve which comprises a first valve seat, a second valve seat, a valve seat core, a transverse connecting pipe, a vertical connecting pipe, a valve needle, a nut, a screw and a second circulating passage, wherein a main valve port is formed at one end of the second valve seat; a first circulating passage is arranged on the lateral wall of the second valve seat; the valve seat core is provided with a valve core hole; the valve needle is arranged corresponding to the valve core hole of the valve seat core; the screw is screwed into the nut in a reciprocating manner along the moving direction of the valve needle so as to drive the valve needle to move along the sliding direction of the valve seat core; the second circulating passage is arranged on the nut and communicates the inner cavity of the second valve seat with the inner cavity of the first valve seat; the first circulating passage is used for communicating the main valve port with the inner cavity of the first valve seat when the valve seat core opens the main valve port; and the second end of the second valve seat and the first end of the nut are combined to form a limiting structure so as to limit the sliding position of the valve seat core in the second valve seat. By adopting the electronic valve disclosed by the invention, the problem that the screw is stuck due to impact to the valve needle caused by reverse flow of a refrigerant can be solved.
Description
Technical field
The present invention relates to electric expansion valve, be especially applied to the electric expansion valve in the refrigeration system such as air conditioner, refrigerator.
Background technique
At air-conditioning market, due to its indoor set and outdoor unit distant, therefore generally can adopt two electric expansion valves, and these two electric expansion valves must distinguish one-way valve in parallel, so could improve the working efficiency of air-conditioning system to greatest extent.
In the process of electric expansion valve work, when refrigeration agent forward flow, first can open needle, flow out from the primary valve little valve seat after the passage then on valve seat core.When refrigeration agent reverse flow, there will be refrigeration agent temporary impact valve seat core, valve seat core is slided in little valve seat, and then impact needle, needle is impacted the cooperation between screw rod and nut, the problem of screw deadlocking may be caused.
Summary of the invention
The object of this invention is to provide a kind of electric expansion valve, impact needle when can avoid refrigeration agent reverse flow and cause the problem of screw deadlocking.
For solving the problems of the technologies described above, as one aspect of the present invention, providing a kind of electric expansion valve, comprising: the first valve seat; Second valve seat, is fixedly connected on the first end end of the first valve seat, and the first end end of the second valve seat is provided with primary valve, the sidewall of the second valve seat is provided with the first-class circulation passage of the sidewall running through the second valve seat; Valve seat core, is slidably disposed on the second valve seat interior to open or to close primary valve, includes the spool bore being communicated to primary valve; Horizontal adapter, is communicated to the inner chamber of the first valve seat; Vertical joint pipe, is fixedly connected on the exit position of primary valve; Needle, is arranged accordingly with the spool bore of valve seat core; Nut, is arranged in the first valve seat; Screw rod, the movement direction along needle is reciprocally screwed onto in nut, and valve needle moves to open or cut-off valve core bore along the glide direction of valve seat core; Second circulation passage, is arranged on nut, and by the intracavity inter-connection of the inner chamber of the second valve seat and the first valve seat; First-class circulation passage when primary valve opened by valve seat core by the intracavity inter-connection of primary valve and the first valve seat; Second end of the second valve seat and the first end of nut are combined to form limit structure, the sliding position of restriction valve seat core in the second valve seat.
Further, the first end of nut is socketed on the second end of the second valve seat.
Further, the sidewall of the second valve seat between limit structure and first-class circulation passage is provided with the 3rd circulation passage, the 3rd circulation passage when primary valve closed by valve seat core by the intracavity inter-connection of the inner chamber of the second valve seat and the first valve seat.
Further, the second sleeve that the second valve seat comprises pedestal and is fixedly connected with pedestal, pedestal is fixedly installed on the first valve seat, and valve seat core is slidably disposed in the second sleeve.
Further, nut sleeve is connected to the second sleeve, and second circulation passage is arranged on the first end near the second valve seat of nut along the radial direction of nut.
Further, the first end end of nut is provided with end bosses, forms catching step between the first end end face of end bosses and nut, and the second end end abutment of the second sleeve is on catching step, end bosses is set in the second sleeve, and limit structure is end bosses.
Further, nut sleeve is located in the second sleeve, and the first end end in insertion second sleeve of nut is the limit structure of spacing valve seat core.
Further, nut has step hole, and the second jacket casing is located in the hole, large footpath of nut, and the internal diameter of the diameter holes of nut is less than the internal diameter of the second sleeve, and the step of step hole is the limit structure of spacing valve seat core.
Further, nut has step hole, and the second jacket casing is located in the hole, large footpath of nut, and limit structure is be fastened on the baffle ring between the first end end of the second sleeve and the step of step hole.
Further, during the reverse work of electric expansion valve, when primary valve opened by valve seat core, needle opens spool bore.
Further, the first end of nut is also socketed with the first sleeve, and the first sleeve extends to valve seat core, and needle is slidably disposed in the first sleeve; Second end of the second valve seat and the first end of the first sleeve are combined to form limit structure, to limit the sliding position of valve seat core in the second valve seat.
The present invention is combined to form limit structure between the second end end and the first end of nut of the second valve seat; can be formed spacing to the axial motion of valve seat core; thus when refrigeration agent reverse flow; the distance that axial motion occurs when the impact being subject to refrigeration agent valve seat core can be limited by limit structure; make valve seat core only mobile intended distance; too large impact can not be caused to needle; thus protection is formed to whole electric expansion valve; effectively prevent refrigeration agent reverse flow and cause valve seat core to impact needle, and then causing the problem of screw deadlocking.
Accompanying drawing explanation
Fig. 1 diagrammatically illustrates the sectional structure chart of the electric expansion valve according to the first embodiment of the present invention;
Fig. 2 diagrammatically illustrates the sectional structure chart of electric expansion valve according to a second embodiment of the present invention;
Fig. 3 diagrammatically illustrates the sectional structure chart of electric expansion valve according to the third embodiment of the invention;
Fig. 4 diagrammatically illustrates the sectional structure chart of electric expansion valve according to a fourth embodiment of the invention;
Fig. 5 diagrammatically illustrates the sectional structure chart of electric expansion valve according to a fifth embodiment of the invention;
Fig. 6 diagrammatically illustrates the sectional structure chart of split type second valve seat of electric expansion valve according to an embodiment of the invention.
Reference character in figure: 10, the first valve seat; 20, the second valve seat; 30, valve seat core; 40, horizontal adapter; 50, vertical joint pipe; 60, needle; 70, nut; 80, screw rod; 21, primary valve; 22, first-class circulation passage; 23, limit structure; 24, pedestal; 25, the second sleeve; 31, spool bore; 71, second circulation passage; 72, the first sleeve; 73, large hole, footpath; 74, diameter holes; 75, the 3rd circulation passage; 76, end bosses.
Embodiment
Below embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Please refer to Fig. 1 to 6, according to embodiments of the invention, electric expansion valve comprises the first valve seat 10, second valve seat 20, valve seat core 30, horizontal adapter 40, vertical joint pipe 50, needle 60, nut 70 and screw rod 80.First valve seat 10 has inner chamber, and miscellaneous part is arranged in the first valve seat 10.
Second valve seat 20 is fixedly connected on the first end end of the first valve seat 10, and the first end end of the second valve seat 20 is provided with primary valve 21, and the second end of the second valve seat 20 is provided with sliding channel; The sidewall of the second valve seat 20 is provided with the first-class circulation passage 22 of the sidewall running through the second valve seat 20, this first-class circulation passage 22 is by the intracavity inter-connection of the inner chamber of the second valve seat 20 and the first valve seat 10.Second end end of the second valve seat 20 is provided with opening.
The sliding channel that valve seat core 30 is slidably disposed on the second valve seat 20 is interior to open or to close primary valve 21, valve seat core 30 includes the spool bore 31 being communicated to primary valve 21, this spool bore 31 extends along the glide direction of valve seat core 30, and run through whole valve seat core 30, the inner chamber of the second valve seat 20 is connected with primary valve 21.When valve seat core 30 is positioned at the position closing primary valve 21, first-class circulation passage 22 is blocked, and the passage between primary valve 21 and the inner chamber of the first valve seat 10 is disconnected, and the inner chamber of the first valve seat 10 is merely able to by realizing between spool bore 31 with primary valve 21 being communicated with; When valve seat core 30 is positioned at the position of opening primary valve 21, first-class circulation passage 22 is by the intracavity inter-connection of primary valve 21 and the first valve seat 10.
Horizontal adapter 40 is communicated to the inner chamber of the first valve seat 10; Vertical joint pipe 50 is fixedly connected on the exit position of primary valve 21, and is communicated to the inner chamber of the second valve seat 20 by primary valve 21.
Needle 60 is arranged accordingly with the spool bore 31 of valve seat core 30; Nut 70 is arranged in the first valve seat 10; Screw rod 80 is reciprocally screwed onto in nut 70 along the movement direction of needle 60, and valve needle 60 moves to open or cut-off valve core bore 31 along the glide direction of valve seat core 30.By the gap between adjustment needle 60 and spool bore 31, the effect of Flow-rate adjustment can be played.
Second end of the second valve seat 20 and the first end of nut 70 are combined to form limit structure 23, and this limit structure 23 is arranged on the sliding path of valve seat core 30, to carry out spacing to the axial motion of valve seat core 30.In the present embodiment, the first end of nut 70 is socketed on the second end of the second valve seat 20, and limit structure 23 is formed in both binding site.
Electric expansion valve also comprises second circulation passage 71, and this second circulation passage 71 is arranged on nut 70, and when primary valve 21 closed by valve seat core 30 by the intracavity inter-connection of the inner chamber of the second valve seat 20 and the first valve seat 10.
When refrigeration agent forward flow, the inner chamber of the first valve seat 10 is entered from horizontal adapter 40, now valve seat core 30 is in the position closing primary valve 21, first-class circulation passage 22 is blocked by valve seat core 30, refrigeration agent cannot enter in primary valve 21 via first-class circulation passage 22 from the inner chamber of the first valve seat 10, and thus horizontal adapter 40 cannot be connected with between vertical joint pipe 50 by first-class circulation passage 22.But because the inner chamber of the first valve seat 10 also can be communicated with primary valve 21 by spool bore 31, therefore refrigeration agent now can also from the inner chamber of the first valve seat 10 after the opening of the second end of the second valve seat 20, primary valve 21 is flowed to from spool bore 31, then vertical joint pipe 50 is entered, realize being communicated with of horizontal adapter 40 and vertical joint pipe 50, now by the aperture regulating the position of needle 60 to carry out modulating valve core bore 31, the Flow-rate adjustment to refrigeration agent can be realized.
When refrigeration agent reverse flow, can enter in primary valve 21 from vertical joint pipe 50, now under the percussion of refrigeration agent, axial motion is there is in valve seat core 30 to the direction away from primary valve 21, first-class circulation passage 22 is opened, refrigeration agent enters the inner chamber of the first valve seat 10 through first-class circulation passage 22, then flows out through horizontal adapter 40.In the process of valve seat core 30 axial motion, after moving to certain distance, reach the position at limit structure 23 place, due to the barrier effect of limit structure 23, can not continue to move vertically, therefore can not causing greater impact to needle 60, also with regard to avoiding after needle 60 is impacted, the cooperating structure of nut 70 and screw rod 80 being impacted, and then the problem causing screw rod 80 stuck.
When refrigeration agent reverse flow, because second circulation passage 71 is arranged on nut 70, and by the intracavity inter-connection of the inner chamber of the second valve seat 20 and the first valve seat 10, when primary valve 21 opened by valve seat core 30, the inner chamber of the first valve seat 10 can be made through the intracavity inter-connection of second circulation passage 71 with second valve seat 20 at valve seat core 30 back side, the pressure of the pressure of the inner chamber of second valve seat 20 at valve seat core 30 back side and the inner chamber of the first valve seat 10 is consistent, it is hereby ensured the back pressure removed suffered by valve seat core 30, valve seat core 30 is made to move to limit position, there will not be the oscillator noise of valve seat core 30.
In addition, when refrigeration agent reverse flow, the refrigerant pressure of vertical joint pipe 50 one end is larger, the inner chamber of the first valve seat 10 is entered after flowing through first-class circulation passage 22, now because second circulation passage 71 is arranged on nut 70, therefore valve seat core 30 can not move to the position at second circulation passage 71 place, also would not result in blockage to second circulation passage 71, thus refrigeration agent can enter the inner chamber of the second valve seat 20 through second circulation passage 71 from the inner chamber of the first valve seat 10, the refrigerant pressure at valve seat core 30 two ends is made to realize balance, the impact forces of refrigeration agent to valve seat core 30 can be reduced further, and then reduce refrigeration agent to the impact forces of needle 60.
Preferably, during the reverse work of electric expansion valve, when primary valve 21 opened by valve seat core 30, needle 60 opens spool bore 31, so, because needle 60 opens spool bore 31, therefore the refrigeration agent of reverse flow can flow out from the gap between needle 60 and valve seat core 30, the impact forces that the refrigeration agent that significantly can reduce reverse flow causes needle 60, and formed between valve seat core 30 and needle 60 and cushion, reduce the impact forces that valve seat core 30 pairs of needles 60 cause.
In order to the percussion that the cooperating structure reducing needle 60 pairs of nuts 70 and screw rod 80 better causes, preferably, also buffer structure is provided with between needle 60 and screw rod 80, this buffer structure is such as spring, after needle 60 is impacted, can first come to form buffering to the percussion of needle 60 by spring, therefore can reduce the impact that needle 60 may cause further, improve safety and reliability when electric expansion valve uses.
In conjunction with shown in Figure 1, in first embodiment of the present invention, the second sleeve 25 that second valve seat 20 comprises pedestal 24 and is fixedly connected with pedestal 24, be formed in one between pedestal 24 and the second sleeve 25 structure, pedestal 24 is fixedly installed on the first valve seat 10, valve seat core 30 is slidably disposed in the second sleeve 25, and first-class circulation passage 22 runs through the sidewall of the close first end of the second sleeve 25 along the radial direction of the second sleeve 25.Nut 70 is socketed on the second sleeve 25, and second circulation passage 71 is arranged on the first end near the second valve seat 20 of nut 70 along the radial direction of nut 70.This first-class circulation passage 22 can be circular hole, also can be the through hole of other shapes.Preferably, multiple first-class circulation passage 22 is arranged along the circumferential uniform intervals of the second sleeve 25.
Second end end abutment of the second sleeve 25 is in the first end end of nut 70, the first end end of nut 70 is provided with end bosses 76, catching step is formed between the first end end face of end bosses 76 and nut 70, the external diameter of end bosses 76 is less than the internal diameter of the second sleeve 25, make end bosses 76 can stretch in the second sleeve 25, formed radial spacing to the second sleeve 25, now this end bosses 76 is the limit structure 23 formed between nut 70 and the second valve seat 20.External diameter due to this end bosses 76 is less than the internal diameter of the second sleeve 25, therefore can be set in the second sleeve 25, and be arranged on the sliding path of valve seat core 30, the position that slides axially of valve seat core 30 is limited, thus effectively avoids causing greater impact to needle 60 in valve seat core 30 movement process and causing the problem of screw deadlocking.
In conjunction with shown in Figure 2, in the middle of second embodiment of the present invention, the concrete structure of electric expansion valve is substantially identical with the first embodiment, difference is, in the present embodiment, the second valve seat 20 sidewall between limit structure 23 and first-class circulation passage 22 is provided with the 3rd circulation passage the 75, three circulation passage 75 when primary valve 21 closed by valve seat core 30 by the intracavity inter-connection of the inner chamber of the second valve seat 20 and the first valve seat 10.
When refrigeration agent forward flow, first-class circulation passage 22 is closed, 3rd circulation passage 75 and second circulation passage 71 are all opened, refrigeration agent in first valve seat 10 can flow in the second valve seat 20 through the 3rd circulation passage 75 and second circulation passage 71 fast, then flow out from primary valve 21, now the 3rd circulation passage 75 can form auxiliary flow circulation passage, makes refrigeration agent can be circulated to the inner chamber of the second valve seat 20 more fast swimmingly.When refrigeration agent reverse flow, the 3rd circulation passage 75 is closed by valve seat core 30, and second circulation passage 71 and first-class circulation passage 22 are opened, and now can be adjusted the damping size suffered by valve seat core 30 by the circulation area adjusting second circulation passage 71.
In conjunction with shown in Figure 3, according to the 3rd embodiment of the present invention, the difference of itself and first embodiment is, in the present embodiment, the first end of nut 70 is tube-in-tube structure, and the external diameter of this tube-in-tube structure is less than or equal to the internal diameter of the second sleeve 25 of the second valve seat 20, makes the first end of nut 70 can be set in the second sleeve 25, and extend in the second sleeve 25, the first end end in insertion second sleeve 25 of nut 70 forms the limit structure 23 of spacing valve seat core 30.
In the present embodiment, the entire outer diameter of nut 70 is less, partly can stretch into the limit structure 23 as the axial movement position of spacing valve seat core 30 in the second sleeve 25, do not need to carry out other transformations to nut 70 again, therefore structure is more simple, processes also more convenient, can reduce manufacturing procedure, cut down finished cost, improve work efficiency.
In conjunction with shown in Figure 4, according to the 4th embodiment of the present invention, it is substantially identical with first embodiment, difference is, in the present embodiment, the first end end of nut 70 has step hole, second sleeve 25 of the second valve seat 20 is set in the hole, large footpath 73 of nut 70 first end end, and coaxially arrange with nut 70, thus the accurate guiding to screw rod 80, needle 60 and spool bore 31 can be realized, ensure the fluency that needle 60 moves and reliability.
In the present embodiment, the end abutment of the second sleeve 25 of the second valve seat 20 is on the step of the step hole of nut 70, internal diameter due to the diameter holes 74 of nut 70 is less than the internal diameter of the second sleeve 25, therefore still step hole is formed between the endoporus of the second sleeve 25 and the diameter holes 74 of nut 70, the diameter holes of this step hole is the diameter holes 74 of nut 70, the hole, large footpath of this step hole is the internal diameter of the second sleeve 25, the step of limit structure 23 for being formed between the second sleeve 25 and nut 70, because this step is positioned on the sliding path of valve seat core 30, and the small aperture of this step is less than the external diameter of valve seat core 30, therefore valve seat core 30 cannot continue axial motion after reaching the step of this step hole, thus axial limiting is formed to valve seat core 30.
In conjunction with shown in Figure 5, according to the 5th embodiment of the present invention, it is substantially identical with the 4th embodiment, and difference is, in the present embodiment, the baffle ring between the step of limit structure 23 step hole that is the first end end and nut 70 that are fastened on the second valve seat 20.The first surface of this baffle ring is connected on the first end end face of the second valve seat 20, and the second face is connected on the step surface of step hole, and is compressed with coordinating between nut 70 by the second valve seat 20, and valve seat core 30 realizes the spacing of axial direction by this baffle ring.
Preferably, the first end of nut 70 can also be arranged with the first sleeve 72, first sleeve 72 and extend to valve seat core 30, and needle 60 is slidably disposed in the first sleeve 72.Sheathed first set cylinder 72 in nut 70, can simplify the structure of nut 70 itself, reduce the difficulty of processing of nut 70, and be convenient to follow-up replacing and maintenance work.For the structure of sheathed first sleeve 72 of first end of nut 70, the second end of the second valve seat 20 and the first end of the first sleeve 72 are combined to form limit structure 23, to limit the sliding position of valve seat core 30 in the second valve seat 20.The limit structure 23 that second end of the second valve seat 20 and the first end of the first sleeve 72 are combined to form and the mode of limit structure 23 formed between above-mentioned nut 70 and the second valve seat 20 similar, just the direct connection relational between original nut 70 with the second valve seat 20 is replaced in order to nut 70 carries out the mode that is connected by the first sleeve 72 and the second valve seat 20.
In conjunction with shown in Figure 6, in the present embodiment, second valve seat 20 is also comprise pedestal 24 and the second sleeve 25, but pedestal 24 and the second sleeve 25 are machine shaping respectively, then be fixedly connected into and be integrated, can be welded as a whole between pedestal 24 and the second sleeve 25, also can be fixed together by worm structure etc.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an electric expansion valve, is characterized in that, comprising:
First valve seat (10);
Second valve seat (20), be fixedly connected on the first end end of described first valve seat (10), the first end end of described second valve seat (20) is provided with primary valve (21), the sidewall of described second valve seat (20) is provided with the first-class circulation passage (22) of the sidewall running through described second valve seat (20);
Valve seat core (30), is slidably disposed on described second valve seat (20) interior to open or to close described primary valve (21), includes the spool bore (31) being communicated to described primary valve (21);
Horizontal adapter (40), is communicated to the inner chamber of described first valve seat (10);
Vertical joint pipe (50), is fixedly connected on the exit position of described primary valve (21);
Needle (60), is arranged accordingly with the spool bore (31) of described valve seat core (30);
Nut (70), is arranged in described first valve seat (10);
Screw rod (80), movement direction along described needle (60) is reciprocally screwed onto in described nut (70), drives described needle (60) to move to open or close described spool bore (31) along the glide direction of described valve seat core (30);
Second circulation passage (71), is arranged on described nut (70), and by the inner chamber of described second valve seat (20) and the intracavity inter-connection of described first valve seat (10);
Described first-class circulation passage (22) when described valve seat core (30) opens described primary valve (21) by the intracavity inter-connection of described primary valve (21) and described first valve seat (10);
Second end of described second valve seat (20) and the first end of described nut (70) are combined to form limit structure (23), limit the sliding position of described valve seat core (30) in described second valve seat (20).
2. electric expansion valve according to claim 1, is characterized in that, the first end of described nut (70) is socketed on the second end of described second valve seat (20).
3. electric expansion valve according to claim 1, it is characterized in that, described second valve seat (20) sidewall between described limit structure (23) and described first-class circulation passage (22) is provided with the 3rd circulation passage (75), described 3rd circulation passage (75) when described valve seat core (30) closes described primary valve (21) by the inner chamber of described second valve seat (20) and the intracavity inter-connection of described first valve seat (10).
4. electric expansion valve according to claim 1, it is characterized in that, the second sleeve (25) that described second valve seat (20) comprises pedestal (24) and is fixedly connected with described pedestal (24), described pedestal (24) is fixedly installed on described first valve seat (10), and described valve seat core (30) is slidably disposed in described second sleeve (25).
5. electric expansion valve according to claim 4, it is characterized in that, described nut (70) is socketed on described second sleeve (25), and described second circulation passage (71) is arranged on the first end of close described second valve seat (20) of described nut (70) along the radial direction of described nut (70).
6. electric expansion valve according to claim 5, it is characterized in that, the first end end of described nut (70) is provided with end bosses (76), catching step is formed between the first end end face of described end bosses (76) and described nut (70), second end end abutment of the second sleeve (25) is on described catching step, described end bosses (76) is set in described second sleeve (25), and described limit structure (23) is described end bosses (76).
7. electric expansion valve according to claim 5, it is characterized in that, described nut (70) is set in described second sleeve (25), and the first end end in described second sleeve of the insertion (25) of described nut (70) is the described limit structure (23) of spacing described valve seat core (30).
8. electric expansion valve according to claim 5, it is characterized in that, described nut (70) has step hole, described second sleeve (25) is set in the hole, large footpath (73) of described nut (70), the internal diameter of the diameter holes (74) of described nut (70) is less than the internal diameter of described second sleeve (25), and the step of described step hole is the described limit structure (23) of spacing described valve seat core (30).
9. electric expansion valve according to claim 5, it is characterized in that, described nut (70) has step hole, described second sleeve (25) is set in the hole, large footpath (73) of described nut (70), and described limit structure (23) is for being fastened on the baffle ring between the first end end of described second sleeve (25) and the step of described step hole.
10. electric expansion valve according to any one of claim 1 to 10, it is characterized in that, the first end of described nut (70) is also socketed with the first sleeve (72), described first sleeve (72) extends to described valve seat core (30), and described needle (60) is slidably disposed in described first sleeve (72); Second end of described second valve seat (20) and the first end of the first sleeve (72) are combined to form described limit structure (23), to limit the sliding position of described valve seat core (30) in described second valve seat (20).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410500188.6A CN105508623B (en) | 2014-09-26 | 2014-09-26 | Electric expansion valve |
| JP2015004815U JP3202781U6 (en) | 2015-09-24 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410500188.6A CN105508623B (en) | 2014-09-26 | 2014-09-26 | Electric expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105508623A true CN105508623A (en) | 2016-04-20 |
| CN105508623B CN105508623B (en) | 2019-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410500188.6A Active CN105508623B (en) | 2014-09-26 | 2014-09-26 | Electric expansion valve |
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| Country | Link |
|---|---|
| CN (1) | CN105508623B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107420566A (en) * | 2016-05-23 | 2017-12-01 | 浙江盾安人工环境股份有限公司 | Electric expansion valve |
| CN107655241A (en) * | 2016-07-26 | 2018-02-02 | 浙江盾安禾田金属有限公司 | A kind of pilot-operated type electric expansion valve |
| CN108692081A (en) * | 2017-04-07 | 2018-10-23 | 浙江盾安机械有限公司 | Electric expansion valve |
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| CN103423460A (en) * | 2012-05-18 | 2013-12-04 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103512288A (en) * | 2012-06-20 | 2014-01-15 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103511636A (en) * | 2012-06-27 | 2014-01-15 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN203604661U (en) * | 2013-09-30 | 2014-05-21 | 苏州优冷机电科技有限公司 | Electronic expansion valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420566A (en) * | 2016-05-23 | 2017-12-01 | 浙江盾安人工环境股份有限公司 | Electric expansion valve |
| CN107655241A (en) * | 2016-07-26 | 2018-02-02 | 浙江盾安禾田金属有限公司 | A kind of pilot-operated type electric expansion valve |
| CN108692081A (en) * | 2017-04-07 | 2018-10-23 | 浙江盾安机械有限公司 | Electric expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3202781U (en) | 2016-02-25 |
| CN105508623B (en) | 2019-07-12 |
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