CN2637833Y - Electron expansion valve used for flow restriction prossure reducing and regualting flow quantity - Google Patents
Electron expansion valve used for flow restriction prossure reducing and regualting flow quantity Download PDFInfo
- Publication number
- CN2637833Y CN2637833Y CN 03255339 CN03255339U CN2637833Y CN 2637833 Y CN2637833 Y CN 2637833Y CN 03255339 CN03255339 CN 03255339 CN 03255339 U CN03255339 U CN 03255339U CN 2637833 Y CN2637833 Y CN 2637833Y
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- China
- Prior art keywords
- valve
- valve seat
- hole
- electric expansion
- expansion valve
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- Expired - Lifetime
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Abstract
The utility model relates to an electronic expansion valve applied to fluid throttling expansion and flow regulation, containing a coil, a valve seat, a casing that is connected with the valve seat and a sealing cap at the upper end of the casing. The valve seat is matched with a rotor part by a thread; the upper part of the rotor part is matched with a stop dog and the lower part of the rotor is provided with a valve stem that is matched with a valve seat hole. The utility model is characterized in that the valve stem is provided with a pressure balance hole that can balance the pressure difference the valve stem suffered when a valve port is about to be closed or after the valve port is already completely closed, therefore, the pressure suffered by the valve stem before or after the valve port during the whole working process is balanced, which means the flow before and after the valve port mutual offsets, thereby improving the opening valve ability of the electronic expansion valve and enhancing the service performance of the electronic expansion valve.
Description
[technical field]
The utility model relates to a kind of throttling expansion of fluid and electric expansion valve of Flow-rate adjustment of being used for.
[background technique]
The throttling expansion that is used for fluid (step-down) of claimant's research and development and the electric expansion valve of Flow-rate adjustment are shown in Fig. 1～4: it comprises coil 4, valve seat 6, be connected in the capping 1 of sleeve pipe 28 on the valve seat and sleeve pipe upper end, pass through a screw pair 11 and a rotor part 5 on the described valve seat 6,13 cooperate, the upper end of this rotor part cooperates with a stopper, its lower end is provided with the valve rod that cooperates with valve seat orifice, thereby form torus knot circulation road FT1, after applying pulse power supply for coil 4, rotate by the multi-stage rotor 13 that permanent-magnet material is made, and change the circumferential movement of rotor 5 into axial motion by screw pair 11, so just change the orifice size of valve body throttling passage FT1, thereby also just realized the throttling expansion and the Flow-rate adjustment of fluid.The electric expansion valve of this structure, when the coniform lower end of valve rod was about to close valve seat orifice 7 (valve port), because fluid is bigger at the flow velocity at valve port place, dynamic pressure was higher, and static pressure is lower, and valve rod is subjected to an action of pressure; After the complete close port of valve rod, the pressure difference that exists before and after the valve port is more obvious; The pressure difference that results under the above-mentioned two states acts on the valve rod, causes out the valve ability to reduce (be that rotor part drives valve rod and withdraws valve port, time can be subjected to coming from the resistance that pressure difference produced before and after the valve port), influences the usability of electric expansion valve.
[model utility content]
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the existing technological deficiency of above-mentioned electric expansion valve, provide a kind of the have throttling expansion that is used for fluid of opening the valve ability more by force and Flow-rate adjustment, improving the usability of electric expansion valve.For this reason, the utility model is taked following technical proposals:
A kind of electric expansion valve that is used for the throttling step-down and regulates flow, comprise coil, valve seat, be connected in the capping of sleeve pipe on the valve seat and sleeve pipe upper end, cooperate with a rotor part by screw pair on the described valve seat, the upper end of this rotor part cooperates with a stopper, its lower end is provided with the valve rod that cooperates with valve seat orifice, it is characterized in that having pressure compensation opening on the described valve rod.When this pressure compensation opening can the balance valve port be about to be closed and be closed the suffered action of pressure of back valve rod fully, make valve rod in entire work process before and after the valve port suffered pressure all be balance, the hydrodynamic pressure that is the valve port front and back is cancelled out each other, thereby improve the valve ability of opening of electric expansion valve, strengthen the usability of electric expansion valve.
As further perfect and optimization, can also take following technique measures to technique scheme:
Described valve seat orifice is one to communicate with the valve body inlet/outlet
Shape passage, described equalizing orifice comprise axial hole and communicate with axial hole radially lateral opening.
Have the annular groove corresponding on described valve seat or the valve rod: when this annular groove equally can the balance valve port be about to be closed and be closed the suffered action of pressure of back valve rod fully, be used with equalizing orifice and has better using effect with valve seat orifice; Annular groove on the valve seat can directly be opened on the valve seat, also the valve port parts as a valve seat part can be set in valve seat again, valve seat orifice is positioned on these valve port parts, and annular groove is opened on the periphery of valve port parts.
The lower end of described rotor part has a valve rod hole, and this hole is built-in with a spring, and described valve rod is spacing in this hole by the flange and a fixed cover of its upper end, and described spring is conflicted in the upper end of valve rod.
The top of described rotor part has a screw hole, described stopper comprises the screw rod that can move up and down, the position limit pin of screw rod upper end, the position-limited lever that is fixed on the top cover downside and cooperates with position limit pin in this hole, described screw flight groove is distributed in the stage casing of screw rod, and the two ends of thread groove are stop end, connect a stop pin that cooperates with thread groove on the described hole wall.
An affixed swivel nut as a valve seat part on the described valve seat, described rotor is screwed onto in this swivel nut.
The utility model is by being provided with the equalizing orifice structure on the valve rod of existing structure, and the annular groove corresponding with valve seat orifice be set on valve seat or valve rod further, when being about to be closed and be closed back valve rod suffered action of pressure fully with the balance valve port, be used the valve ability of opening that improves electric expansion valve with equalizing orifice, strengthen the usability of electric expansion valve; It is skillfully constructed, and is simple in structure, and using effect is good.
Below in conjunction with Figure of description the utility model is described further.
[description of drawings]
Fig. 1 is an electric expansion valve structural representation formerly.
Fig. 2 is the I portion enlarged view among Fig. 1.
Fig. 3 is the II portion enlarged view among Fig. 1.
Fig. 4 is the III portion enlarged view among Fig. 1.
Fig. 5 is a structural representation of the present utility model.
Fig. 6 is that B-B among Fig. 5 is to view.
Fig. 7 is the stem structure schematic representation of band groove.
Fig. 8 is the valve seat construction schematic representation of band groove.
Fig. 9 for for the E-E among Fig. 8 to view.
Figure 10 is for being located at annular groove the structural representation on the valve port parts.
[embodiment]
Shown in Fig. 1～4: the utility model comprise with the electric expansion valve of formerly electric expansion valve with coil 4, the valve seat 6 of spline structure, be fixed in the sleeve pipe 28 on the valve seat and be welded on the capping 1 of sleeve pipe upper end: affixed swivel nut 12 on the valve seat 6, rotor 5 is screwed onto in the swivel nut, multi-stage rotor 13 and the rotor 5 formation rotor part that is connected as a single entity, thus between rotor 5 and swivel nut 12 (being between rotor part and the valve seat) formation one screw pair 11; Apply pulse power supply to coil, can make multi-stage rotor 13 drive rotor 5 and move axially by screw pair.The upper end of rotor part cooperates with a stopper, its lower end connects valve rod: stopper comprises the screw rod 2 (being Spielpassung between screw rod 2 and the screw hole 14) that can move up and down in the screw hole 14 of rotor upper end, be fixed on the position limit pin 17 of screw rod 2 upper ends, the position-limited lever 18 that is fixed on top cover 1 downside and cooperates with position limit pin, and the thread groove 15 of screw rod 2 is distributed in the stage casing of screw rod, the two ends of thread groove 15 are the stop end of chocking construction 16, connect the stop pin 3 that a front end portion is positioned at thread groove 15 on the hole wall of screw hole 14, because the two ends of thread groove are chocking construction, so screw rod 2 relatively rotates with axial stroke with rotor 5 and fixes; The lower end of rotor 5 has valve rod hole 27, and this hole is built-in with spring 10, and valve rod 8 is spacing in this hole by the flange 19 of fixed cover 9 and its upper end, and spring is conflicted in the upper end of valve rod 8.
Shown in Fig. 5～10: other is with formerly electric expansion valve phase region:
Have on the valve rod 8 by axial hole 20 that communicates and radially lateral opening 21 pressure compensation openings that constitute (seeing Fig. 5, Figure 10); Be provided with annular groove between valve rod and valve seat, the axial position of this annular groove should guarantee not blocked by valve seat when valve rod is positioned at its limit inferior position, thereby plays the effect of balance valve port (position that valve rod combines with valve seat orifice) front and back pressure.In the specific implementation, can realize by following several modes: as shown in Figure 7, annular groove 23 is set in the lower end of valve rod; Shown in Fig. 8,9, on valve seat 6
Shape valve seat orifice 22 combines the position that forms valve port annular groove 24 is set with valve rod 8; As shown in figure 10, the part of valve port parts 26 as valve seat is set earlier in valve seat 6, and will
Shape valve seat orifice 22 is positioned on these valve port parts 26, and annular groove 25 is set on the periphery on the valve port parts 26 again.
The electric expansion valve of said structure, valve rod 8 with
The shape valve seat orifice combines and forms two fan-shaped throttling passage FT2 (seeing Fig. 5,10), when valve rod 8 axially slides up and down, has just changed the circulation area of fan-shaped throttling passage FT2, thereby realizes the throttling expansion and the Flow-rate adjustment of fluid; By regulating valve seat hole 22 matching gap with valve rod 8, minimum discharge that can modulating valve.
Coil is applied pulse power supply, rotate in swivel nut by the multi-stage rotor that permanent-magnet material is made, and change the circumferential movement of rotor into axial motion, drive stem shaft and slide up and down by screw pair, change the circulation area of fan-shaped throttling passage, realize the throttling expansion and the Flow-rate adjustment of fluid; Because the two ends of thread groove are stop end, so screw rod and relative rotation of rotor and axial stroke are fixed.
Claims (7)
1, a kind of electric expansion valve that is used for the throttling step-down and regulates flow, comprise coil (4), valve seat (6), be connected in the capping (1) of sleeve pipe (28) on the valve seat and sleeve pipe upper end, described valve seat (6) is gone up by screw pair (11) and is cooperated with a rotor part (5,13), the upper end of this rotor part cooperates with a stopper, its lower end is provided with the valve rod (8) that cooperates with valve seat orifice (22), it is characterized in that having pressure compensation opening on the described valve rod (8).
2, the electric expansion valve that is used for the throttling step-down and regulates flow according to claim 1 is characterized in that described valve seat orifice (22) is one to communicate with the valve body inlet/outlet
Shape passage, described equalizing orifice comprise axial hole (20) and radially lateral opening (21) that communicate with axial hole.
3, the electric expansion valve that is used for the throttling step-down and regulates flow according to claim 1 and 2 is characterized in that having the annular groove corresponding with valve seat orifice (23,24) on described valve seat (6) or the valve rod (8).
4, the electric expansion valve that is used for the throttling step-down and regulates flow according to claim 3, it is characterized in that being provided with in the described valve seat (6) valve port parts (26), described valve seat orifice (22) is positioned on these valve port parts, and has annular groove (25) on the periphery of these valve port parts.
5, the electric expansion valve that is used for the throttling step-down and regulates flow according to claim 1, the lower end that it is characterized in that described rotor part has a valve rod hole (27), this hole is built-in with a spring (10), described valve rod (8) is spacing in this hole by the flange (19) and a fixed cover (9) of its upper end, and described spring (10) is conflicted in the upper end of valve rod (8).
6, the electric expansion valve that is used for the throttling step-down and regulates flow according to claim 1, the top that it is characterized in that described rotor part has a screw hole (14), described stopper comprises the screw rod (2) that can move up and down, the position limit pin (17) of screw rod upper end, the position-limited lever (18) that is fixed on top cover (1) downside and cooperates with position limit pin in this hole, the thread groove of described screw rod (2) is distributed in its stage casing, and the two ends of thread groove (15) are stop end, connect a stop pin (3) that cooperates with thread groove (15) on the hole wall of described screw hole.
7, the electric expansion valve that is used for the throttling step-down and regulates flow according to claim 1 is characterized in that a upward affixed swivel nut (12) of described valve seat (6), and described rotor part is screwed onto in this swivel nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03255339 CN2637833Y (en) | 2003-07-02 | 2003-07-02 | Electron expansion valve used for flow restriction prossure reducing and regualting flow quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03255339 CN2637833Y (en) | 2003-07-02 | 2003-07-02 | Electron expansion valve used for flow restriction prossure reducing and regualting flow quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2637833Y true CN2637833Y (en) | 2004-09-01 |
Family
ID=34294910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03255339 Expired - Lifetime CN2637833Y (en) | 2003-07-02 | 2003-07-02 | Electron expansion valve used for flow restriction prossure reducing and regualting flow quantity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2637833Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348897C (en) * | 2004-12-14 | 2007-11-14 | 浙江三花制冷集团有限公司 | Electronic expansion valve |
| CN104343994A (en) * | 2013-07-31 | 2015-02-11 | 浙江三花股份有限公司 | Thermal expansion valve |
| CN106439211A (en) * | 2016-10-12 | 2017-02-22 | 诸暨市亿霸电子阀门有限公司 | Valve rod assembly on electronic expansion valve |
| CN106641430A (en) * | 2016-10-12 | 2017-05-10 | 诸暨市亿霸电子阀门有限公司 | Novel electronic expansion valve |
| CN107542966A (en) * | 2016-06-29 | 2018-01-05 | 株式会社不二工机 | Motor-driven valve |
| CN107654713A (en) * | 2016-07-26 | 2018-02-02 | 浙江三花制冷集团有限公司 | Magnetic valve and its valve seat |
| CN109780224A (en) * | 2017-11-13 | 2019-05-21 | 艾默生环境优化技术(苏州)有限公司 | Electric expansion valve |
| CN110454579A (en) * | 2018-05-08 | 2019-11-15 | 艾默生环境优化技术(苏州)有限公司 | Needle component and electric expansion valve with the needle component |
| CN110836270A (en) * | 2018-08-17 | 2020-02-25 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN112576763A (en) * | 2019-09-27 | 2021-03-30 | 株式会社鹭宫制作所 | Electric valve and refrigeration cycle system |
| WO2021098303A1 (en) * | 2019-11-19 | 2021-05-27 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| CN114352797A (en) * | 2022-01-20 | 2022-04-15 | 广东威灵电机制造有限公司 | Electronic expansion valve, refrigeration equipment and automobile |
-
2003
- 2003-07-02 CN CN 03255339 patent/CN2637833Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348897C (en) * | 2004-12-14 | 2007-11-14 | 浙江三花制冷集团有限公司 | Electronic expansion valve |
| CN104343994A (en) * | 2013-07-31 | 2015-02-11 | 浙江三花股份有限公司 | Thermal expansion valve |
| CN107542966A (en) * | 2016-06-29 | 2018-01-05 | 株式会社不二工机 | Motor-driven valve |
| CN107654713A (en) * | 2016-07-26 | 2018-02-02 | 浙江三花制冷集团有限公司 | Magnetic valve and its valve seat |
| CN106439211B (en) * | 2016-10-12 | 2024-04-26 | 诸暨市亿霸电子阀门有限公司 | Valve rod assembly on electronic expansion valve |
| CN106439211A (en) * | 2016-10-12 | 2017-02-22 | 诸暨市亿霸电子阀门有限公司 | Valve rod assembly on electronic expansion valve |
| CN106641430A (en) * | 2016-10-12 | 2017-05-10 | 诸暨市亿霸电子阀门有限公司 | Novel electronic expansion valve |
| CN106641430B (en) * | 2016-10-12 | 2024-04-26 | 诸暨市亿霸电子阀门有限公司 | Novel electronic expansion valve |
| CN109780224A (en) * | 2017-11-13 | 2019-05-21 | 艾默生环境优化技术(苏州)有限公司 | Electric expansion valve |
| CN110454579A (en) * | 2018-05-08 | 2019-11-15 | 艾默生环境优化技术(苏州)有限公司 | Needle component and electric expansion valve with the needle component |
| CN110836270B (en) * | 2018-08-17 | 2021-09-28 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN110836270A (en) * | 2018-08-17 | 2020-02-25 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN112576763A (en) * | 2019-09-27 | 2021-03-30 | 株式会社鹭宫制作所 | Electric valve and refrigeration cycle system |
| WO2021098303A1 (en) * | 2019-11-19 | 2021-05-27 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| CN114352797A (en) * | 2022-01-20 | 2022-04-15 | 广东威灵电机制造有限公司 | Electronic expansion valve, refrigeration equipment and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SANHUA CO., LTD., ZHEJIANG Free format text: FORMER OWNER: ZHEJIANG SANHUA GROUP CO., LTD. Effective date: 20050225 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050225 Address after: 312500 Liquan, Chengguan Town, Xinchang County, Zhejiang Province Patentee after: Zhejiang Sanhua Group Co., Ltd. Address before: 312500 Liquan, Chengguan Town, Xinchang County, Zhejiang Province Patentee before: Zhejiang Sanhua Group Corp., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130702 Granted publication date: 20040901 |