CN105485349A - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
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- CN105485349A CN105485349A CN201410478647.5A CN201410478647A CN105485349A CN 105485349 A CN105485349 A CN 105485349A CN 201410478647 A CN201410478647 A CN 201410478647A CN 105485349 A CN105485349 A CN 105485349A
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- valve
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- electric expansion
- expansion valve
- valve seat
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Abstract
The invention provides an electronic expansion valve. The electronic expansion valve comprises a valve body (1), a vertical connecting pipe (2), a transverse connecting pipe (3), a valve seat (4) and a valve needle (5). The valve seat (4), the vertical connecting pipe (2) and the transverse connecting pipe (3) are all arranged on the valve body (1). A main valve port (6) is formed in the valve seat (4). The valve needle (5) can move in the axial direction relative to the main valve port (6) of the valve seat (4) so as to open or close the main valve port (6). The electronic expansion valve is characterized in that an annular sleeve (7) is arranged on the valve seat (4) in the axial direction, the valve needle (5) is sleeved with the annular sleeve (7), and an annular channel (8) is formed between the annular sleeve (7) and the valve needle (5); the height of the annular channel (8) is larger than or equal to a quarter of the stroke of the valve needle (5). According to the electronic expansion valve, the problem that the phenomenon of deviated flow occurs when refrigerating fluid flows reversely, and consequentially high noise is generated can be solved.
Description
Technical field
The present invention relates to apparatus of air conditioning accessory field, particularly relate to a kind of electric expansion valve.
Background technique
Electric expansion valve regulates vaporizer liquid supply rate according to pre-set programs, because belonging to electronic type shaping modes, therefore is called electric expansion valve.It has adapted to the electrical integrated demand for development of refrigerator, has the good characteristic that heating power expansion valve is incomparable, for the intelligentized control method of refrigeration system provides condition, is a kind of rising auto-control energy-saving element.
As shown in Figure 1, comprise vertical joint pipe 2 ', horizontal adapter 3 ', valve seat 4 ' and needle 5 ', valve seat 4 ' is provided with primary valve 6 ', and needle 5 ' matches to open or close primary valve 6 ' with valve seat 4 ' existing electric expansion valve.When the reverse work of this electric expansion valve, refrigeration agent flows to horizontal adapter 3 ' from vertical joint pipe 2 ' through primary valve 6 ', and in this process, refrigeration agent easily at primary valve 6 ' place, Biased flow phenomenon occurs, thus produces larger noise, affects the experience of user.
Summary of the invention
The object of this invention is to provide a kind of electric expansion valve, can avoid producing during refrigeration agent reverse flow Biased flow phenomenon occurs, produce the problem of larger noise.
For solving the problems of the technologies described above, as one aspect of the present invention, provide a kind of electric expansion valve, comprise valve body, vertical joint pipe, horizontal adapter, valve seat and needle, valve seat, vertical joint pipe and horizontal adapter are all arranged on valve body, valve seat is provided with primary valve, the primary valve of needle opposite valve seat can move axially open or close primary valve, valve seat is in axial direction provided with ring sleeve, ring sleeve is set in outside needle, and and form annular pass between needle, the height of annular pass is more than or equal to 1/4 of needle stroke.
Further, the height of annular pass is 1/3 to 1/2 of needle stroke.
Further, the equivalent aera at the smallest cross-sectional place of annular pass is 1 to 3 times of the equivalent aera of primary valve when all opening.
Further, the equivalent aera at the smallest cross-sectional place of annular pass is 1.2 to 1.5 times of the equivalent aera of primary valve when all opening.
Further, ring sleeve is provided with axially open away from one end of valve seat.
Further, the periphery wall of ring sleeve and the periphery wall of valve seat coaxially isometrical.
Further, ring sleeve axially extends in the middle part of the end face of valve seat, and and forms annular gap between the inner chamber perisporium of valve body.
Further, ring sleeve is disposed radially the radial passage being communicated with horizontal adapter and primary valve, 1/4 of the equivalent aera when equivalent aera of radial passage is less than or equal to primary valve standard-sized sheet.
Further, the end, one end away from valve seat of ring sleeve is provided with guiding end plate, needle is located on guiding end plate, the radial direction of ring sleeve is provided with radial passage, the equivalent aera of radial passage is more than or equal to equivalent aera during primary valve standard-sized sheet, and the distance between radial passage and valve seat is greater than 1/4 of the stroke of needle.
Further, electric expansion valve also comprises nut and screw rod, and nut is arranged in valve body; Nut or valve body guiding needle, screw rod is reciprocally screwed onto in nut along the movement direction of needle, and valve needle is opened or closed primary valve.
The present invention is provided with ring sleeve at the primary valve place of valve seat, this ring sleeve is set in outside needle, and and form annular pass between needle, and the height of this annular pass is more than or equal to 1/4 of needle stroke, annular pass is made to have enough drainage height, drainage can be carried out when the reverse work of electric expansion valve to refrigeration agent, prevent refrigeration agent generation Biased flow phenomenon, the problem that the noise produced due to bias current when therefore can avoid refrigeration agent reverse flow is larger.
Accompanying drawing explanation
Fig. 1 diagrammatically illustrates the sectional structure schematic diagram of electric expansion valve of the prior art;
Fig. 2 diagrammatically illustrates the sectional structure schematic diagram of electric expansion valve according to an embodiment of the invention;
Fig. 3 diagrammatically illustrates the cooperating structure schematic diagram of ring sleeve according to the electric expansion valve of the first embodiment of the present invention and needle;
Fig. 4 diagrammatically illustrates the ring sleeve of electric expansion valve according to a second embodiment of the present invention and the cooperating structure schematic diagram of needle;
Fig. 5 diagrammatically illustrates the ring sleeve of electric expansion valve according to the third embodiment of the invention and the cooperating structure schematic diagram of needle;
Fig. 6 diagrammatically illustrates the ring sleeve of electric expansion valve according to a fourth embodiment of the invention and the cooperating structure schematic diagram of needle.
Reference character in figure: 1, valve body; 2, vertical joint pipe; 3, horizontal adapter; 4, valve seat; 5, needle; 6, primary valve; 7, ring sleeve; 8, annular pass; 9, axially open; 10, annular gap; 11, lead end plate; 12, radial passage; 13, nut; 14, screw rod.
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. 2 to Fig. 6, according to embodiments of the invention, electric expansion valve comprises valve body 1, vertical joint pipe 2, horizontal adapter 3, valve seat 4 and needle 5, valve seat 4, vertical joint pipe 2 and horizontal adapter 3 are all arranged on valve body 1, valve seat 4 is provided with primary valve 6, the primary valve 6 of needle 5 opposite valve seat 4 can move axially, to open or to close primary valve 6, valve seat 4 is in axial direction provided with ring sleeve 7, ring sleeve 7 is set in outside needle 5, and and form annular pass 8 between needle 5, the height h of annular pass 8 is more than or equal to 1/4 of needle 5 stroke.Survey calculation the height of annular pass 8 and the stroke of needle 5 are all contact position when closing from needle 5 and primary valve 6.
Because the primary valve place at valve seat is provided with ring sleeve 7 in embodiments of the invention, this ring sleeve 7 is set in outside needle 5, and and form annular pass 8 between needle 5, and the height h of this annular pass 8 is more than or equal to 1/4 of needle 5 stroke, annular pass 8 is made to have enough drainage height, drainage can be carried out to refrigeration agent when the reverse work of electric expansion valve, prevent refrigeration agent from restriction place, Biased flow phenomenon occurring, the problem that the noise produced due to bias current when therefore can avoid refrigeration agent reverse flow is larger.
Preferably, the height of annular pass 8 is 1/3 to 1/2 of needle 5 stroke, can ensure that there are enough drainage height annular pass 8, thus can play better drainage to refrigeration agent.
The equivalent aera at the smallest cross-sectional place of annular pass 8 is 1 to 3 times of the equivalent aera of primary valve 6 when all opening, the circulation area of refrigeration agent can be controlled, make refrigeration agent can not produce second throttle because circulation area diminishes, ensure flow during refrigeration agent reverse flow, the circulation area of this outer annular channel 8 is also unlikely to excessive, therefore also can not affect the original flow of electric expansion valve, the circulation area due to annular pass 8 can be avoided to occur noise too greatly.
Preferably, the equivalent aera at the smallest cross-sectional place of annular pass 8 is 1.2 to 1.5 times of the equivalent aera of primary valve 6 when all opening, and can obtain good drainage effect within the scope of this.
Electric expansion valve also comprises nut 13 and screw rod 14, and nut 13 is arranged in valve body 1; Nut 13 or valve body 1 lead needle 5, and screw rod 14 is reciprocally screwed onto in nut 13 along the movement direction of needle 5, and primary valve 6 is opened or closed to valve needle 5.Preferably, also damping spring is provided with between screw rod 14 and needle 5, the first end of damping spring is connected on the blocked part of screw rod 14, second end is connected on the blocked part of needle 5, can be formed the impact forces between screw rod 14 and needle 5 and cushion, avoiding when closing primary valve 6 that to cause screw rod 14 to occur stuck because active force is excessive, improving safety and reliability during electric expansion valve work.
In conjunction with shown in Figure 3, according in the electric expansion valve of the first embodiment of the present invention, ring sleeve 7 is uniform section annular, and the annular pass 8 that itself and needle 5 are formed also is set to uniform section, and ring sleeve 7 is provided with axially open 9 away from one end of valve seat 4.The water conservancy diversion direction that the refrigeration agent of reverse flow can drill annular pass 8 moves to axially open 9 place, then flows out via horizontal adapter 3.In this structure, coordinate away from valve seat 4 one end and needle 5 relation of guiding without the need to what consider ring sleeve 7, therefore process simple and convenient, easy to implement.
In the present embodiment, preferably, ring sleeve 7 axially extends in the middle part of the end face of valve seat 4, and and form annular gap 10 between the inner chamber perisporium of valve body 1, the impact on refrigerant flow can be reduced, ensure the service behaviour of electric expansion valve.
In conjunction with shown in Figure 4, in electric expansion valve according to a second embodiment of the present invention, ring sleeve 7 is provided with axially open 9 away from one end of valve seat 4, the periphery wall of ring sleeve 7 and the periphery wall of valve seat 4 coaxially isometrical, and to fit with the intracavity sidewall of valve body 1.The ring sleeve 7 of this kind of structure is identical with the external diameter of valve seat 4, therefore directly can be processed by the external diameter of ring sleeve 7 and valve seat 4 by same cylindrical body man-hour adding, and structure is simple, easy to process, can cut down finished cost.
In conjunction with shown in Figure 5, according to the third embodiment of the invention in electric expansion valve, ring sleeve 7 is provided with axially open 9 away from one end of valve seat 4, and ring sleeve 7 is disposed radially the radial passage 12 being communicated with horizontal adapter 3 and primary valve 6,1/4 of the equivalent aera when equivalent aera of radial passage 12 is less than or equal to primary valve 6 standard-sized sheet.The radial passage 12 of this kind of structure, because internal diameter is less, equivalent aera is less, and the refrigerant flow passed through is also less, therefore substantially can not affect electric expansion valve and produce noise.This radial passage 12 can assist axially open 9 pairs of refrigeration agents to carry out conducting, therefore can ensure the peak rate of flow of electric expansion valve, improves the performance of electric expansion valve.
In conjunction with shown in Figure 6, according to the third embodiment of the invention, in electric expansion valve, the end, one end away from valve seat 4 of ring sleeve 7 is provided with guiding end plate 11, is tightly connected between guiding end plate 11 and needle 5, and leading role is played to needle 5, needle 5 is located on guiding end plate 11.Because refrigeration agent cannot flow out via guiding end plate 11 position, therefore the radial direction of ring sleeve 7 is provided with the radial passage 12 flowing to horizontal adapter 3 for refrigeration agent from vertical joint pipe 2, the equivalent aera of radial passage 12 is more than or equal to equivalent aera during primary valve 6 standard-sized sheet, and the distance between radial passage 12 and valve seat 4 is greater than 1/4 of the stroke of needle 5, namely the height of radial passage 12 on annular pass 8 is more than or equal to 1/4 of needle stroke.By said structure, can ensure that annular pass 8 can continue to play effective guide function to refrigeration agent on the basis avoiding ring sleeve 7 pairs of refrigeration agents to carry out second throttle, avoid, during refrigeration agent reverse work, Biased flow phenomenon occurs.
The contrast table of electric expansion valve noise when electric expansion valve noise when being the refrigeration agent reverse flow before not adopting embodiments of the invention scheme in following table and the refrigeration agent reverse flow after adopting embodiments of the invention scheme:
| Valve port latus rectum (mm) | 1 | 1.3 | 1.6 | 1.8 | 2 | 2.4 | 2.8 | 3 |
| Noise (db) before transformation | 70 | 69 | 75 | 77 | 82 | 81 | 83 | 84 |
| Noise (db) after transformation | 32 | 31 | 33 | 35 | 34 | 337 | 37 | 36 |
As can be seen from the table, it is known after verification experimental verification is carried out to different valve port latus rectum, when valve port latus rectum be 1.3,1.6,1.8,2.0,2.4,2.8,3.0mm time, electric expansion valve according to an embodiment of the invention, the Biased flow phenomenon that refrigeration agent occurs all obviously can be reduced when refrigeration agent reverse flow, and reducing the noise produced therefrom, the noise problem of electric expansion valve is obviously improved.
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, comprise valve body (1), vertical joint pipe (2), horizontal adapter (3), valve seat (4) and needle (5), described valve seat (4), vertical joint pipe (2) and horizontal adapter (3) are all arranged on described valve body (1), described valve seat (4) is provided with primary valve (6), the primary valve (6) of the relatively described valve seat (4) of described needle (5) can move axially, to open or to close described primary valve (6), it is characterized in that, described valve seat (4) is in axial direction provided with ring sleeve (7), described ring sleeve (7) is set in described needle (5) outward, and and form annular pass (8) between described needle (5), the height of described annular pass (8) is more than or equal to 1/4 of described needle (5) stroke.
2. electric expansion valve according to claim 1, is characterized in that, the height of described annular pass (8) is 1/3 to 1/2 of described needle (5) stroke.
3. electric expansion valve according to claim 1 and 2, is characterized in that, the equivalent aera at the smallest cross-sectional place of described annular pass (8) is 1 to 3 times of the equivalent aera of described primary valve (6) when all opening.
4. electric expansion valve according to claim 3, is characterized in that, the equivalent aera at the smallest cross-sectional place of described annular pass (8) is 1.2 to 1.5 times of the equivalent aera of described primary valve (6) when all opening.
5. electric expansion valve according to claim 1 and 2, is characterized in that, described ring sleeve (7) is provided with axially open (9) away from one end of described valve seat (4).
6. electric expansion valve according to claim 1 and 2, is characterized in that, the periphery wall of described ring sleeve (7) and the periphery wall of described valve seat (4) coaxially isometrical.
7. electric expansion valve according to claim 1 and 2, it is characterized in that, described ring sleeve (7) axially extends in the middle part of the end face of described valve seat (4), and and forms annular gap (10) between the inner chamber perisporium of described valve body (1).
8. electric expansion valve according to claim 7, it is characterized in that, described ring sleeve (7) is disposed radially the radial passage (12) being communicated with described horizontal adapter (3) and described primary valve (6), 1/4 of the equivalent aera when equivalent aera of described radial passage (12) is less than or equal to described primary valve (6) standard-sized sheet.
9. electric expansion valve according to claim 7, it is characterized in that, the end, one end away from described valve seat (4) of described ring sleeve (7) is provided with guiding end plate (11), described needle (5) is located on described guiding end plate (11), the radial direction of described ring sleeve (7) is provided with radial passage (12), the equivalent aera of described radial passage (12) is more than or equal to equivalent aera during described primary valve (6) standard-sized sheet, distance between described radial passage (12) and described valve seat (4) is greater than 1/4 of the stroke of described needle (5).
10. electric expansion valve according to claim 1 and 2, is characterized in that, described electric expansion valve also comprises nut (13) and screw rod (14), and described nut (13) is arranged in described valve body (1); Described nut (13) or described valve body (1) lead described needle (5), described screw rod (14) is reciprocally screwed onto in described nut (13) along the movement direction of described needle (5), drives described needle (5) to open or close described primary valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410478647.5A CN105485349A (en) | 2014-09-18 | 2014-09-18 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410478647.5A CN105485349A (en) | 2014-09-18 | 2014-09-18 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105485349A true CN105485349A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410478647.5A Pending CN105485349A (en) | 2014-09-18 | 2014-09-18 | Electronic expansion valve |
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| Country | Link |
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| CN (1) | CN105485349A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958774A (en) * | 2017-12-25 | 2019-07-02 | 浙江盾安机械有限公司 | A kind of electric expansion valve |
| CN113847436A (en) * | 2021-09-17 | 2021-12-28 | 浙江恒森实业集团有限公司 | Electronic expansion valve rotor assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0635688A1 (en) * | 1993-07-15 | 1995-01-25 | Sporlan Valve Company | Dual port valve with stepper motor actuator |
| JP2008215813A (en) * | 2008-06-13 | 2008-09-18 | Daikin Ind Ltd | Expansion valve and refrigeration device |
| CN201891901U (en) * | 2010-11-10 | 2011-07-06 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN102913678A (en) * | 2012-10-19 | 2013-02-06 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN102954235A (en) * | 2011-08-11 | 2013-03-06 | 株式会社鹭宫制作所 | Valve body feeding mechanism of fluid control valve and fluid control valve using the mechanism |
| CN204114161U (en) * | 2014-09-18 | 2015-01-21 | 浙江盾安人工环境股份有限公司 | Electric expansion valve |
-
2014
- 2014-09-18 CN CN201410478647.5A patent/CN105485349A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0635688A1 (en) * | 1993-07-15 | 1995-01-25 | Sporlan Valve Company | Dual port valve with stepper motor actuator |
| JP2008215813A (en) * | 2008-06-13 | 2008-09-18 | Daikin Ind Ltd | Expansion valve and refrigeration device |
| CN201891901U (en) * | 2010-11-10 | 2011-07-06 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN102954235A (en) * | 2011-08-11 | 2013-03-06 | 株式会社鹭宫制作所 | Valve body feeding mechanism of fluid control valve and fluid control valve using the mechanism |
| CN102913678A (en) * | 2012-10-19 | 2013-02-06 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN204114161U (en) * | 2014-09-18 | 2015-01-21 | 浙江盾安人工环境股份有限公司 | Electric expansion valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958774A (en) * | 2017-12-25 | 2019-07-02 | 浙江盾安机械有限公司 | A kind of electric expansion valve |
| CN109958774B (en) * | 2017-12-25 | 2022-06-17 | 浙江盾安机械有限公司 | Electronic expansion valve |
| CN113847436A (en) * | 2021-09-17 | 2021-12-28 | 浙江恒森实业集团有限公司 | Electronic expansion valve rotor assembly |
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160413 |
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| RJ01 | Rejection of invention patent application after publication |