CN102252119A - Electrically operated valve and heat exchange device comprising same - Google Patents
Electrically operated valve and heat exchange device comprising same Download PDFInfo
- Publication number
- CN102252119A CN102252119A CN2010101819322A CN201010181932A CN102252119A CN 102252119 A CN102252119 A CN 102252119A CN 2010101819322 A CN2010101819322 A CN 2010101819322A CN 201010181932 A CN201010181932 A CN 201010181932A CN 102252119 A CN102252119 A CN 102252119A
- Authority
- CN
- China
- Prior art keywords
- needle
- valve
- operated valve
- screw mandrel
- mortor operated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses an electrically operated valve. The electrically operated valve comprises a valve plug base (1) which is provided with a valve plug cavity and a valve port (11) communicated with the valve plug cavity, and a valve needle (2) which is extended into the valve plug cavity and is matched with the valve port (11); a lead screw (3) is connected with the upper part of the valve needle (2); and a pilot sleeve (4) is arranged outside the lead screw (3) and is fixedly connected with the valve plug base (1). By the electrically operated valve, the concentricity between the pilot sleeve (4) and the valve port (11) can be improved so that the sealing performance between the valve needle (2) and the valve port (11) can be improved and the frictional resistance during rotation of a rotator (6) can be reduced. Moreover, the invention also discloses a heat exchange device comprising the electrically operated valve.
Description
Technical field
The present invention relates to the flow control component technical field, particularly a kind of mortor operated valve.In addition, the invention still further relates to a kind of heat-exchange device that comprises said electric valve.
Background technique
At refrigeration technology field, mortor operated valve is the cold medium flux controlling component of chiller plant, its working procedure is generally: mortor operated valve opens in chiller plant systems such as air-conditioning or cuts out, thus the circulation and the interruption of control refrigerant, and the size that can regulate cold medium flux.Certainly, the Applicable scope of mortor operated valve is not limited in above-mentioned refrigeration technology field, such as, also be widely used in Hydraulic Field.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of typical mortor operated valve in the prior art.
Mortor operated valve of the prior art comprise shell 5 ', shell 5 ' in be provided with rotor 6 ', this rotor 6 ' with screw mandrel 3 ' be connected, screw mandrel 3 ' the outside by the nut 8 that has been threaded ', and this nut 8 ' be located at pilot sleeve 4 ' in.As shown in Figure 1, the below of mortor operated valve be provided with the stretching valve seat 9 of shell 5 ' be connected ', stretching valve seat 9 ' with valve core case 1 ' be connected, and valve core case 1 ' offer valve port 1 ' 1; The needle 2 of mortor operated valve ' be connected screw mandrel 3 ' the underpart, and along with screw mandrel 3 ' move up and down, open or close port 1 ' 1.
The working procedure of mortor operated valve shown in Figure 1 is: along with rotor 6 ' rotate, screw mandrel 3 ' rotate because screw mandrel 3 ' with nut 8 ' by being threaded, thereby screw mandrel 3 ' move upward, thereby drive needle 2 ' move upward, thereby open valve port 1 ' 1; When rotor 6 ' counterrotating, screw mandrel 3 ' movement process with above-mentioned opposite, this moment screw mandrel 3 ' drive under, needle 2 ' move downward, close port 1 ' 1.
In the above-mentioned prior art, pilot sleeve 4 ' at bottom bending and stretching valve seat 9 ' be connected, because this stretching valve seat 9 ' formed precision is not high, thereby valve core case 1 ' valve port 1 ' 1 and stretching valve seat 9 ' between existence assembling coaxiality error, and then cause valve port 1 ' 1 and pilot sleeve 4 ' between the bigger coaxiality error of existence.In addition, the bending structure more complicated of pilot sleeve 4 ' underpart, machining accuracy are difficult to guarantee, have strengthened manufacture cost on the one hand, also strengthened on the other hand pilot sleeve 4 ' and valve port 1 ' 1 between coaxiality error.
Pilot sleeve 4 ' and valve port 1 ' 1 between have bigger coaxiality error, can cause needle 2 ' and valve port 1 ' 1 between coaxiality error bigger, thereby cause problems such as valve port is 1 ' 1 poorly sealed, eccentric wear.In addition, pilot sleeve 4 ' and valve port 1 ' 1 between have bigger coaxiality error, the surface friction drag in the time of also can increasing rotor 6 ' rotation, and then influenced the reliability of mortor operated valve work.
In sum, how to guarantee pilot sleeve 4 ' and valve port 1 ' 1 between coaxality, be the problem that those skilled in the art need solution badly.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of mortor operated valve, this mortor operated valve can improve the coaxality between pilot sleeve and the valve port, thereby can improve the sealability between needle and the valve port on the one hand, the surface friction drag in the time of rotor rotation can being reduced on the other hand.In addition, the present invention also provides a kind of heat-exchange device that comprises said electric valve.
For solving the problems of the technologies described above, the invention provides a kind of mortor operated valve, comprise valve core case, the valve port that described valve core case is provided with spool chamber and is communicated with described spool chamber; Described mortor operated valve also comprises and stretches into the needle that cooperates with described valve port in the described spool chamber; The top of described needle is connected with screw mandrel, and the outside of described screw mandrel is provided with pilot sleeve; Described pilot sleeve is fixedlyed connected with described valve core case.
Preferably, the underpart of described pilot sleeve is welded in the inside of described valve core case upper end portion.
Preferably, the inwall of described spool chamber is provided with first guide portion, and described needle is provided with second guide portion of fitting with described first guide portion; The lower end part of described second guide portion is in described spool chamber, and its upper end portion is stretched in the described pilot sleeve and with the inwall of described pilot sleeve and fitted.
Preferably, the upper end portion interference fit of described valve core case is in the inside of described pilot sleeve underpart.
Preferably, the inwall of described spool chamber is provided with first guide portion, and described needle is provided with second guide portion of fitting with described first guide portion.
Preferably, described needle is provided with the needle chamber, and the underpart of described screw mandrel is rotatably stretched in the described needle chamber and flexibly connected vertically with the upper end portion of described needle; Also be connected with elastic member between the diapire in the underpart of described screw mandrel and described needle chamber.
Preferably, the upper end portion of described needle is provided with the screw mandrel cover; Described screw mandrel cover is rotatably passed in the underpart of described screw mandrel, and described screw mandrel cover below is provided with the back-up ring that is connected with described screw mandrel.
Preferably, described needle comprises the point that cooperates with described valve port, and described point comprises flow control division, and the top of described flow control division is connected with the needle sealed department, and described valve port is opened or closed to described needle sealed department.
Preferably, the top of described needle sealed department also offers connected needle stepped part.
In addition, for solving the problems of the technologies described above, the present invention also provides a kind of heat-exchange device, comprises above-mentioned each described mortor operated valve.
On the basis of existing technology, the valve core case of mortor operated valve provided by the present invention directly is connected with pilot sleeve, and valve port forms by Vehicle Processing, thereby can guarantee coaxality between valve port and the pilot sleeve with comparalive ease, because pilot sleeve play the guiding role to screw mandrel and the needle that links together, thereby can guarantee coaxality between needle and the valve port, reduce the coaxiality error between the two, thereby improve the sealability between needle and the valve port, and avoided the eccentric wear problem simultaneously.In addition, because coaxality is improved, thereby the surface friction drag during rotor rotation obviously reduces, thereby improved the reliability of mortor operated valve work.
In addition, the technique effect of the heat-exchange device that comprises described mortor operated valve provided by the present invention and the technique effect of said electric valve are basic identical, do not repeat them here.
Description of drawings
Fig. 1 is the structural representation of a kind of typical mortor operated valve in the prior art;
Fig. 2 is that the axle of mortor operated valve is surveyed schematic representation in an embodiment of the present invention;
Fig. 3 is the main pseudosection of mortor operated valve among Fig. 2;
Fig. 4 is the main pseudosection of mortor operated valve among the another kind of embodiment of the present invention.
Embodiment
Core of the present invention provides a kind of mortor operated valve, and this mortor operated valve can improve the coaxality between pilot sleeve and the valve port, thereby can improve the sealability between needle and the valve port on the one hand, the surface friction drag in the time of can reducing rotor rotation on the other hand.In addition, another core of the present invention is for providing a kind of heat-exchange device that comprises said electric valve.
In order to make those skilled in the art understand technological scheme of the present invention better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2, Fig. 3 and Fig. 4, Fig. 2 is that the axle of mortor operated valve is surveyed schematic representation in an embodiment of the present invention; Fig. 3 is the main pseudosection of mortor operated valve among Fig. 2; Fig. 4 is the main pseudosection of mortor operated valve among the another kind of embodiment of the present invention.
In one embodiment, as shown in Figure 3 and Figure 4, mortor operated valve provided by the present invention comprises shell 5, is provided with rotor 6 in the shell 5, and this rotor 6 is connected with screw mandrel 3, and the outside of screw mandrel 3 is by the nut 8 that has been threaded, and this nut 8 is located in the pilot sleeve 4.The below of mortor operated valve is provided with the stretching valve seat 9 that is connected with shell 5, and stretching valve seat 9 is connected with valve core case 1, and valve core case 1 offers valve port 11; The needle 2 of mortor operated valve is connected the underpart of screw mandrel 3, and along with the moving up and down of screw mandrel 3, opens or close port 11.
In addition, the circumferential side wall of pilot sleeve 4 is set with spring guide rail 71, slip ring 72 comes back rotation up and down spring guide rail 71 between the abut, rotor 6 is fixed on the upper end of screw mandrel 3 by the rotor bore suit, and the retainer 61 of rotor 6 cooperates the number of turns of rotating with restrict rotor 6 and the stroke of oscilaltion with slip ring 72.Screw mandrel 3 is provided with outside thread, and the endoporus of nut 8 is provided with internal thread, the motion thread pair of this mortor operated valve of the supporting formation of above-mentioned internal and external threads.
On the basis of above-mentioned prior art, as shown in Figure 3 and Figure 4, pilot sleeve 4 is fixedlyed connected with valve core case 1, thus changed pilot sleeve 4 in the prior art ' be connected stretching valve seat 9 ' on structural design.
The valve core case 1 of mortor operated valve provided by the present invention directly is connected with pilot sleeve 4, thereby can guarantee coaxality between valve port 11 and the pilot sleeve 4 with comparalive ease, because 4 pairs of screw mandrels that link together of pilot sleeve 3 play the guiding role with needle 2, thereby can guarantee coaxality between needle 2 and the valve port 11, reduce the coaxiality error between the two, thereby improved the sealability between needle 2 and the valve port 11, and avoided the eccentric wear problem simultaneously.In addition, because coaxality is improved, thereby the surface friction drag of rotor 6 when rotating obviously reduces, thereby improved the reliability of mortor operated valve work.
Please refer to Fig. 3, in the above-described embodiments, the underpart of pilot sleeve 4 is connected in the inside of valve core case 1 upper end portion, particularly, inwall in valve core case 1 upper end portion is provided with the connection stepped part, the underpart of pilot sleeve 4 is supported on this connection stepped part, and concrete Placement can be interference fit or welding; Perhaps as shown in Figure 4, the upper end portion of valve core case 1 is connected in the inside of pilot sleeve 4 underparts, particularly, outer wall in valve core case 1 upper end portion is provided with another and connects stepped part, the underpart of pilot sleeve 4 be supported in this another connect on the stepped part, concrete Placement can be interference fit or welding.Obviously, above-mentioned two kinds of improved procedures can further improve the coaxality between pilot sleeve 4 and the valve core case 1, and then improve the coaxality between pilot sleeve 4 and the valve port 11.
Further, please refer to Fig. 3 and Fig. 4, the inwall of valve core case 1 can further be provided with first guide portion 12, needle 2 is provided with second guide portion 25 of fitting with first guide portion 12, in the present embodiment, first guide portion 12 and second guide portion 25 are fitted mutually, and have than less friction between the two, so that needle 2 moves up and down with respect to valve core case 1.Obviously, this structural design can play good leading role to needle 2, thereby further guarantees the coaxality between needle 2 and the valve port 11.Need to prove that when the underpart of pilot sleeve 4 was connected in the inside of valve core case 1 upper end portion, the upper end portion of second guide portion 25 was stretched in the pilot sleeve 4, and fit that the lower end part of second guide portion 25 is in spool chamber with the inwall of pilot sleeve 4.
Please refer to Fig. 3 and Fig. 4, in above-mentioned any embodiment, needle 2 can further be provided with the needle chamber, and the underpart of screw mandrel 3 is rotatably stretched in the described needle chamber and flexibly connected vertically with the upper end portion of needle 2; Also be connected with elastic member 23 between the diapire in the underpart of screw mandrel 3 and described needle chamber.
In the prior art, as shown in Figure 1, screw mandrel 3 ' lower end is connected with small sleeve, needle 2 ' the upper end portion stretch in the cavity that this small sleeve surrounds and screw mandrel 3 ' be connected.Obviously, with respect to the prior art, present embodiment has omitted the structural design of small sleeve, directly offer needle chamber 21 in the inside of needle 2, the underpart of screw mandrel 3 is stretched into this needle chamber 21 and is connected with needle 2, thereby has reduced the assembling component, and then has reduced cost of material and assembly cost.
Further, as shown in Figure 3 and Figure 4, the upper end portion of needle 2 is provided with screw mandrel cover 22; Screw mandrel cover 22 is rotatably passed in the underpart of screw mandrel 3, and is provided with and is positioned at the back-up ring 31 that screw mandrel overlaps 22 belows.
When screw mandrel 3 moves downward, screw mandrel 3 pressure elasticity parts 23, elastic member 23 acts on the diapire in needle chamber 21, moves downward thereby promote needle 2, and then close port 11; When screw mandrel 3 moved upward, because the interaction of back-up ring 31 and screw mandrel cover 22, screw mandrel 3 drove needles 2 and moves upward, and valve port 11 is opened.
In above-mentioned any embodiment, can also make further improvement to the point 24 of needle 2.As shown in Figure 3 and Figure 4, point 24 comprises flow control division 241, this flow control division 241 is used for adjusting the flow of valve port 11, obviously, along with this flow control division 241 rises, by the flow increase of valve port 11, along with this flow control division 241 descends, flow by valve port 11 reduces, and closes until valve port 11.The top of flow control division 241 is connected with needle sealed department 242, and needle sealed department 242 is opened or close port 11.
On the basis of the described scheme of epimere, the top of needle sealed department 242 also offers connected needle stepped part 243.Obviously, with respect to the structure that does not have needle stepped part 243 in the prior art, this kind structural design can significantly reduce flow resistance, and then has increased flow.
In addition; Fig. 2, Fig. 3 and pilot sleeve 4 shown in Figure 4 are the cylindrical straight tube; but be not limited to this; can also improve the structure of pilot sleeve 4 according to the size of nut 8 and valve core case 1; underpart external diameter and internal diameter are big such as being designed to, upper end portion external diameter and internal diameter is little or underpart external diameter and internal diameter is little, upper end portion external diameter and the big stepped sleeve of internal diameter; obviously, these improve also within protection scope of the present invention.
Heat-exchange device provided by the present invention comprises the described mortor operated valve of above-mentioned any specific embodiment, and this heat-exchange device is specifically as follows air-conditioning, refrigerator, heat pump water heater and various refrigeration, heating device etc.; Other parts of heat-exchange device can be with reference to prior art, and this paper no longer launches.
More than to a kind of mortor operated valve provided by the present invention and comprise that the heat-exchange device of this mortor operated valve is described in detail.Used specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. a mortor operated valve comprises valve core case (1), the valve port (11) that described valve core case (1) is provided with spool chamber and is communicated with described spool chamber; Described mortor operated valve also comprises and stretches into the needle (2) that cooperates with described valve port (11) in the described spool chamber; The top of described needle (2) is connected with screw mandrel (3), and the outside of described screw mandrel (3) is provided with pilot sleeve (4); It is characterized in that described pilot sleeve (4) is fixedlyed connected with described valve core case (1).
2. mortor operated valve as claimed in claim 1 is characterized in that, the underpart of described pilot sleeve (4) is welded in the inside of described valve core case (1) upper end portion.
3. mortor operated valve as claimed in claim 2 is characterized in that, the inwall of described spool chamber is provided with first guide portion (12), and described needle (2) is provided with second guide portion (25) of fitting with described first guide portion (12); The lower end part of described second guide portion (25) is in described spool chamber, and its upper end portion is stretched in the described pilot sleeve (4) and with the inwall of described pilot sleeve (4) and fitted.
4. mortor operated valve as claimed in claim 1 is characterized in that, the upper end portion interference fit of described valve core case (1) is in the inside of described pilot sleeve (4) underpart.
5. mortor operated valve as claimed in claim 4 is characterized in that, the inwall of described spool chamber is provided with first guide portion (12), and described needle (2) is provided with second guide portion (25) of fitting with described first guide portion (12).
6. as each described mortor operated valve of claim 1 to 5, it is characterized in that described needle (2) is provided with the needle chamber, the underpart of described screw mandrel (3) is rotatably stretched in the described needle chamber (21) and is flexibly connected vertically with the upper end portion of described needle (2); Also be connected with elastic member (23) between the diapire in the underpart of described screw mandrel (3) and described needle chamber (21).
7. mortor operated valve as claimed in claim 6 is characterized in that, the upper end portion of described needle (2) is provided with screw mandrel cover (22); Described screw mandrel cover (22) is rotatably passed in the underpart of described screw mandrel (3), and described screw mandrel cover (22) below is provided with the back-up ring (31) that is connected with described screw mandrel.
8. as each described mortor operated valve of claim 1 to 5, it is characterized in that, described needle (2) comprises the point (24) that cooperates with described valve port (11), described point (24) comprises flow control division (241), the top of described flow control division (241) is connected with needle sealed department (242), and described valve port (11) is opened or closed to described needle sealed department (242).
9. mortor operated valve as claimed in claim 8 is characterized in that, the top of described needle sealed department (242) also offers connected needle stepped part (243).
10. a heat-exchange device is characterized in that, comprises as each described mortor operated valve of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101819322A CN102252119A (en) | 2010-05-21 | 2010-05-21 | Electrically operated valve and heat exchange device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101819322A CN102252119A (en) | 2010-05-21 | 2010-05-21 | Electrically operated valve and heat exchange device comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102252119A true CN102252119A (en) | 2011-11-23 |
Family
ID=44979591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101819322A Pending CN102252119A (en) | 2010-05-21 | 2010-05-21 | Electrically operated valve and heat exchange device comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102252119A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388939A (en) * | 2012-05-11 | 2013-11-13 | 浙江三花股份有限公司 | Electronic expansion valve |
| WO2013177865A1 (en) * | 2012-05-29 | 2013-12-05 | 浙江三花股份有限公司 | Electronic expansion valve |
| US9322582B2 (en) | 2012-05-11 | 2016-04-26 | Zhejiang Sanhua Co., Ltd. | Electronic expansion valve |
| US9541315B2 (en) | 2012-08-10 | 2017-01-10 | Zhejiang Sanhua Co., Ltd. | Electronic expanding valve |
| US9689595B2 (en) | 2012-05-18 | 2017-06-27 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electronic expansion valve |
| US9810461B2 (en) | 2012-06-20 | 2017-11-07 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electronic expansion valve |
| CN107327579A (en) * | 2017-04-10 | 2017-11-07 | 诸暨市亿霸电子阀门有限公司 | A kind of electric expansion valve |
| CN110529606A (en) * | 2018-05-25 | 2019-12-03 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| EP4033180A4 (en) * | 2020-12-04 | 2022-07-27 | Shanghai Kelai Mechatronics Engineering Co., Ltd | Electromagnetic valve having hard sealing structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003075008A (en) * | 2001-08-31 | 2003-03-12 | Fuji Koki Corp | Motor-operated valve |
| CN2654971Y (en) * | 2003-10-01 | 2004-11-10 | 浙江三花股份有限公司 | Electronic expansion valve body structure |
| CN1749606A (en) * | 2004-09-17 | 2006-03-22 | 株式会社不二工机 | Electric valve |
| CN1869482A (en) * | 2005-05-27 | 2006-11-29 | 株式会社不二工机 | Motor-operated valve |
| CN101135385A (en) * | 2006-08-31 | 2008-03-05 | 浙江三花制冷集团有限公司 | Electric Valve |
| JP2008169910A (en) * | 2007-01-11 | 2008-07-24 | Fuji Koki Corp | Motor-operated valve |
| CN101294634A (en) * | 2007-03-20 | 2008-10-29 | 株式会社不二工机 | Electric valve |
-
2010
- 2010-05-21 CN CN2010101819322A patent/CN102252119A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003075008A (en) * | 2001-08-31 | 2003-03-12 | Fuji Koki Corp | Motor-operated valve |
| CN2654971Y (en) * | 2003-10-01 | 2004-11-10 | 浙江三花股份有限公司 | Electronic expansion valve body structure |
| CN1749606A (en) * | 2004-09-17 | 2006-03-22 | 株式会社不二工机 | Electric valve |
| CN1869482A (en) * | 2005-05-27 | 2006-11-29 | 株式会社不二工机 | Motor-operated valve |
| CN101135385A (en) * | 2006-08-31 | 2008-03-05 | 浙江三花制冷集团有限公司 | Electric Valve |
| JP2008169910A (en) * | 2007-01-11 | 2008-07-24 | Fuji Koki Corp | Motor-operated valve |
| CN101294634A (en) * | 2007-03-20 | 2008-10-29 | 株式会社不二工机 | Electric valve |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388939B (en) * | 2012-05-11 | 2016-06-01 | 浙江三花股份有限公司 | A kind of electric expansion valve |
| WO2013166790A1 (en) * | 2012-05-11 | 2013-11-14 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103388939A (en) * | 2012-05-11 | 2013-11-13 | 浙江三花股份有限公司 | Electronic expansion valve |
| US9297562B2 (en) | 2012-05-11 | 2016-03-29 | Zhejiang Sanhua Co., Ltd. | Electronic expansion valve |
| US9322582B2 (en) | 2012-05-11 | 2016-04-26 | Zhejiang Sanhua Co., Ltd. | Electronic expansion valve |
| US9689595B2 (en) | 2012-05-18 | 2017-06-27 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electronic expansion valve |
| CN103453699B (en) * | 2012-05-29 | 2016-08-10 | 浙江三花股份有限公司 | A kind of electric expansion valve |
| US9341399B2 (en) | 2012-05-29 | 2016-05-17 | Zhejiang Sanhua Co., Ltd. | Electronic expansion valve |
| CN103453699A (en) * | 2012-05-29 | 2013-12-18 | 浙江三花股份有限公司 | Electronic expansion valve |
| WO2013177865A1 (en) * | 2012-05-29 | 2013-12-05 | 浙江三花股份有限公司 | Electronic expansion valve |
| US9810461B2 (en) | 2012-06-20 | 2017-11-07 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electronic expansion valve |
| US9541315B2 (en) | 2012-08-10 | 2017-01-10 | Zhejiang Sanhua Co., Ltd. | Electronic expanding valve |
| CN107327579A (en) * | 2017-04-10 | 2017-11-07 | 诸暨市亿霸电子阀门有限公司 | A kind of electric expansion valve |
| CN107327579B (en) * | 2017-04-10 | 2024-03-29 | 诸暨市亿霸电子阀门有限公司 | Electronic expansion valve |
| CN110529606A (en) * | 2018-05-25 | 2019-12-03 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| CN110529606B (en) * | 2018-05-25 | 2022-04-29 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| EP4033180A4 (en) * | 2020-12-04 | 2022-07-27 | Shanghai Kelai Mechatronics Engineering Co., Ltd | Electromagnetic valve having hard sealing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102252119A (en) | Electrically operated valve and heat exchange device comprising same | |
| KR102096387B1 (en) | Electronic expansion valve | |
| CN101929550B (en) | Electronic expansion valve | |
| CN101560998B (en) | Self-control positioning bidirectional hydraulic change-over valve | |
| CN202149235U (en) | Electrically-operated valve | |
| CN104791536B (en) | A kind of direct-driven motor-operated valve | |
| CN103249977A (en) | Electric valve | |
| CN103052999A (en) | Electromagnetic drive unit and method for producing same | |
| CN104791502A (en) | Electric valve | |
| CN101135386A (en) | Electric valve | |
| CN204628743U (en) | A kind of electric expansion valve | |
| CN105436867B (en) | A kind of automatic leading mechanism on bushing press | |
| CN104132149A (en) | Electric valve | |
| CN203516769U (en) | Electronic expansion valve for ground source heat pump | |
| CN206449036U (en) | A kind of reciprocating compressor novel high speed magnetic valve | |
| CN201521701U (en) | Magnetic valve for fluid control | |
| CN204213453U (en) | Pole shoe guide pin bushing integral type valve control electromagnet structure | |
| CN203532836U (en) | Opening type friction-free ball valve | |
| CN207421469U (en) | A kind of variable-torque electrohydraulic actuator based on the butterfly valve interlocked firmly | |
| CN103486329A (en) | Ball head assembly and drying machine valve installing structure with same | |
| CN110094513A (en) | A kind of motor-driven valve | |
| CN102853142B (en) | Electric valve | |
| CN204004479U (en) | A kind of electric expansion valve | |
| CN210566373U (en) | Electric control flow valve | |
| CN203770293U (en) | Energy-saving hydraulic cylinder with thrust automatically converted |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111123 |