CN203979607U - A kind of electric expansion valve - Google Patents
A kind of electric expansion valve Download PDFInfo
- Publication number
- CN203979607U CN203979607U CN201420357234.7U CN201420357234U CN203979607U CN 203979607 U CN203979607 U CN 203979607U CN 201420357234 U CN201420357234 U CN 201420357234U CN 203979607 U CN203979607 U CN 203979607U
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- gear
- electric expansion
- expansion valve
- spool
- lower cover
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Abstract
The utility model discloses a kind of electric expansion valve, belong to chiller plant flow control technique field, solve the little technical problem of existing electric expansion valve valve opening force square, electric expansion valve of the present utility model comprises valve body, magnetic rotor component and mangetic core assembly, described mangetic core assembly comprises the spool can axial reciprocating moving, described magnetic rotor component comprises magnet rotor and mandrel, between described mandrel and spool, be provided with screw rod, also comprise multiple geared system, described multiple geared system comprises gear carrier, be located at gear carrier center and connect the first gear of described mandrel, and the second gear that described screw flight is connected and be engaged in the first gear and the second gear between transition gear, described screw rod lower end and spool offset, the drive screw axial reciprocating that rotatablely moves of described the second gear moves.The utility model embodiment is applied to electric expansion valve, normally the electric expansion valve of slowdown type.
Description
[technical field]
The utility model relates to electric expansion valve, belongs to chiller plant flow control technique field.
[background technique]
Direct driving type electronic expansion valve is to utilize stator coil to drive, the magnet rotor generation of electric expansion valve inside is rotatablely moved, the bolt rotary that drive is attached thereto, screw rod and nut seat form screw pair, when bolt rotary, follow upper and lower displacement, thereby drive needle move up and down and change valve port of valve body circulation area, regulate by the uninterrupted of the fluid of electric expansion valve with this.Common direct driving type electronic expansion valve in prior art, is generally only applicable to the frequency converting air conditioner that refrigerating capacity is little, and the larger air-conditioning system of refrigerating capacity relatively, as central air-conditioner etc., because refrigerating capacity increases, requires valve port diameter to increase, and need to have larger valve opening force square.The magnet rotor of existing common direct driving type electronic expansion valve by screw pair effect after by the direct output torque of needle, there is the shortcomings such as valve opening force square is little, control impuls number is few, Flow-rate adjustment low precision, cannot meet the flow control requirement of large refrigerating capacity air-conditioning system.
[model utility content]
Problem to be solved in the utility model is just to provide a kind of electric expansion valve, effectively improves valve opening force square, increases control impuls number.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of electric expansion valve, comprise valve body, magnetic rotor component and mangetic core assembly, described mangetic core assembly comprises the spool can axial reciprocating moving, described magnetic rotor component comprises magnet rotor and mandrel, between described mandrel and spool, be provided with screw rod, also comprise multiple geared system, described multiple geared system comprises gear carrier, be located at gear carrier center and connect the first gear of described mandrel, and the second gear that described screw flight is connected and be engaged in the first gear and the second gear between transition gear, described screw rod lower end and spool offset, the drive screw axial reciprocating that rotatablely moves of described the second gear moves.
Further, described multiple geared system is planet wheel speed reducer, and described transition gear is a planet wheel.
Further, described multiple geared system is tertiary gear speed reducer, described transition gear comprises one-level transition gear and secondary transition gear, described one-level transition gear is engaged between the first gear and secondary transition gear, and secondary transition gear is engaged between the second gear and one-level transition gear.
Further, described gear carrier comprises upper cover and lower cover, described lower cover has diapire and step-like sidewall, described the first gear and transition gear are positioned at the space of upper cover and lower cover formation, described the second gear is located at the bottom outside of lower cover, the sidewall of described lower cover is provided with dodges hole, and described transition gear has gearwheel and small gear, and described small gear engages with the second gear through dodging hole.
Further, described cover rim is provided with buckle, and the sidewall of described lower cover is provided with draw-in groove, and described upper cover and lower cover are fastened and connected.
Further, described cover rim is provided with location piece, and described location piece is provided with limited bayonet, and the sidewall of described lower cover is provided with location convex tendon, and described location convex tendon inserts in limited bayonet.
Further, described upper cover center is provided with the boss projecting upwards, boss center is provided with core axle hole, described mandrel lower end is provided with first step axle and second step axle, described first step axle passes core axle hole and is fixedly connected with described the first gear, described second step axle and boss offset, and second step axle can rotate freely in core axle hole.
Further, described the second gear comprises diapire, along the ring gear of diapire week side setting be located at the tapped hole at diapire center, described ring gear engages with the small gear of described transition gear, described screw rod comprises limited part, screw section and resisting part, described lower cover center is provided with spacing hole, described limited part inserts in spacing hole and limits screw rod rotation, and described screw section coordinates with tapped hole, and described resisting part and spool offset.
Further, described mangetic core assembly also comprises the valve core case being fixedly connected with valve body, described valve core case comprises the first holding cavity and the second holding cavity, described multiple geared system is fixedly mounted in the first holding cavity, described spool is arranged in the second holding cavity, is provided with the elastic element that coordinates screw rod control valve core movement in described the second holding cavity.
Further, described electric expansion valve also comprises the coil block being arranged on magnetic rotor component, and described valve core case is provided with and extends to valve body outside and the location piece for fixed coil assembly.
The beneficial effects of the utility model:
In electric expansion valve of the present utility model, be provided with multiple geared system, magnetic rotor component torque is inputted from the first gear, after slowing down by transition gear, exported by the second gear, the second gear and screw flight are connected, rotatablely moving of the second gear can be changed into the axially reciprocating of screw rod, thereby realize the switch valve adjusting of mangetic core assembly.The utility model, by the decelerating effect of multiple geared system, has increased output torque greatly, increases control impuls number, can meet the flow control requirement of large refrigerating capacity air-conditioning system.
The upper cover of described gear carrier adopts seizing type to be connected with lower cover, facilitate assembling parts, and lower cover has diapire and step-like sidewall, the first gear and transition gear are positioned at the space of upper cover and lower cover formation, the second gear is located at the bottom outside of lower cover, the structure of whole multiple geared system is compacter compared to existing technologies, wherein the first gear is arranged on gear carrier center as sun gear, only around the first gear axis rotation, and transition gear is also only walked around and is crossed gear axis rotation, can be around the first gear revolution, so by the second gear output torque.By above-mentioned design, can make the structure of multiple geared system simpler, part placement is compacter, thereby in the situation that increases multiple geared system, effectively controls the volume of electric expansion valve.
The valve core case of the utility model mangetic core assembly has the first holding cavity and the second holding cavity, multiple geared system is fixedly mounted in the first holding cavity, spool is arranged in the second holding cavity, in the time of assembling, first by valve core case and valve body welding, again multiple geared system and spool are installed in valve core case, greatly reduce the assembling difficulty of speed-reduction type electronic expansion valve, improve efficiency of assembling; In addition, multiple geared system and spool are assembled in a valve core case, can make the interior part placement of valve compacter.
Because multiple geared system and spool are assemblied in a valve core case, and multiple geared system is fixedly mounted in the first holding cavity, spool is arranged in the second holding cavity, the second holding cavity plays the effect of guide spool motion, adopt this assembling mode, can improve the coaxality of multiple geared system and spool, reduce the wearing and tearing that gear and spool cause because of coaxiality deviation, improve part working life, also the running of part is more smooth and easy simultaneously, is conducive to improve flow control effect.
In the prior art, for the coil block of fixing electric expansion valve, location piece need to be installed on valve body conventionally, be connected the location of realizing coil block by the buckle on coil block with the location piece of valve body.The utility model is arranged on location piece on valve core case, has removed the operation of independent installation location piece from, improves efficiency of assembling.
These features of the present utility model and advantage will be below embodiment, accompanying drawing in detailed exposure.
[brief description of the drawings]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the overall structure schematic diagram of electric expansion valve in the utility model preferred embodiment;
Fig. 2 is A place partial enlarged drawing in Fig. 1;
Fig. 3 is the structural representation of the utility model preferred embodiment middle gear frame upper cover;
Fig. 4 is the structural representation of the utility model preferred embodiment middle gear frame lower cover;
Fig. 5 is the connection diagram of the utility model preferred embodiment middle gear frame lower cover and upper cover;
Fig. 6 is the structural representation of transition gear in the utility model preferred embodiment;
Fig. 7 is the structural representation of the second gear in the utility model preferred embodiment;
Fig. 8 is the structural representation of mandrel in the utility model preferred embodiment;
Fig. 9 is the structural representation of screw rod in the utility model preferred embodiment;
Figure 10 is the structural representation of valve core case in the utility model preferred embodiment.
[embodiment]
Accompanying drawing below in conjunction with the utility model embodiment is explained and illustrated the utility model embodiment's technological scheme, but following embodiment is only preferred embodiment of the present utility model, not all.Based on the embodiment in mode of execution, those skilled in the art are other embodiments that obtains under the prerequisite of not making creative work, all belong to protection domain of the present utility model.
With reference to Fig. 1,2, the electric expansion valve of the utility model preferred embodiment, comprises valve body 2, magnetic rotor component 3, mangetic core assembly 4, screw rod 6 and coil block 1, and wherein mangetic core assembly 4 comprises valve core case 43, spool 41 and elastic element 42.Magnetic rotor component 3 comprises sleeve pipe 31, magnet rotor 33 and mandrel 32, and coil block 1 is enclosed within on sleeve pipe 31.The present embodiment is also provided with multiple geared system in electric expansion valve.When work, coil block 1 is switched on, make magnet rotor 33 be with moving mandrel 32 to rotate by electromagnetic induction effect, mandrel 32 is to multiple geared system input torque, multiple geared system is exported torque to screw rod 6, in the time of screw rod 6 axial downward movement, act on spool 41 compression elastic element 42, realize and close valve; In the time that screw rod 6 axially moves upward, spool 41, under elastic element 42 effects, upwards moves along valve core case 43, realizes and drives valve, and thus, the switch valve of having realized mangetic core assembly 4 by the axially reciprocating of screw rod 6 regulates.
The multiple geared system of the present embodiment is planet wheel speed reducer, the second gear 54 that comprise gear carrier, be located at the first gear 50 of gear carrier center and connecting mandrel 32, is connected with screw rod 6 screw-thread fit and be engaged in the first gear 50 and the second gear 54 between transition gear 53, transition gear 53 is planet wheels.With reference to Fig. 2-5, the gear carrier of the present embodiment comprises upper cover 51 and lower cover 52, wherein upper cover 51 center is provided with the boss 511 projecting upwards, boss 511 centers are provided with core axle hole 512, in conjunction with Fig. 8, aforesaid mandrel 32 lower ends are provided with first step axle 321 and second step axle 322, first step axle 321 passes core axle hole 512 and is fixedly connected with the first gear 50, second step axle 322 offsets with boss 511, and second step axle 322 can rotate freely in core axle hole 512, mandrel 32 can drive the first gear 50, but between mandrel 32 and upper cover 51, can not produce interference.
With reference to Fig. 2-7, aforesaid transition gear 53 has gearwheel 531 and small gear 532, and the number of teeth of gearwheel 531 is greater than the number of teeth of small gear 532, and gearwheel 531 is determined according to actual designing requirement with the reduction speed ratio of small gear 532.In order to make multiple geared system structure compacter, the lower cover 52 of the present embodiment has diapire 522 and step-like sidewall 521, the first gear 50 and transition gear 53 are positioned at the space that upper cover 51 and lower cover 52 form, the second gear 54 is located at the bottom outside of lower cover 52, upper cover 51 is provided with upper shaft hole 513, and the diapire 522 of lower cover 52 is provided with lower shaft hole 5222; Transition gear 53 centers are coated with bearing pin 533, and upper shaft hole 513 is inserted in bearing pin 533 upper ends, and lower shaft hole 5222 is inserted in bearing pin 533 lower ends.When work, 53 rotations centered by bearing pin 533 of transition gear, can not revolve round the sun around the first gear 50.On the sidewall 521 of lower cover 52, be provided with and dodge hole 5212, it is corresponding with small gear 532 positions of transition gear 53 that this dodges hole 5212, and small gear 532 engages with the second gear 54 through dodging hole 5212.Above-mentioned layout can make the structure of multiple geared system simpler, and part placement is compacter, thereby in the situation that increases multiple geared system, effectively controls the volume of electric expansion valve.
With reference to Fig. 3-5, for convenience of assembling, the present embodiment adopts buckle structure to connect upper cover 51 and lower cover 52, concrete: upper cover 51 marginating compartments are arranged several buckles 514, each buckle 514 has radially outstanding snap fit 5141, on the sidewall of lower cover 52, be provided with the draw-in groove corresponding with buckle 514 5210, utilize the resiliently deformable of buckle 514 to make snap fit 5141 embed draw-in groove 5210, upper cover 51 is fixed in lower cover 52.In order to improve fixed effect, the present embodiment is also provided with some location pieces 515 at upper cover 51 edges, location piece 515 is provided with limited bayonet 5151, the sidewall 5212 of lower cover 52 is provided with location convex tendon 5211, when assembling, limited bayonet 5151 inserts along location convex tendon 5211, location convex tendon 5211 embeds in limited bayonet 5151, in the time of upper cover and lower cover assembling, play leading role, guiding upper cover packs into along location convex tendon, when buckle and draw-in groove are fastened, aforesaid bearing pin also can just catch up with axis hole and lower shaft hole coordinates; After installation, play the effect that restriction upper cover 51 circumferentially rotates relative to lower cover 52.
With reference to Fig. 2,7, second gear 54 of the present embodiment comprises diapire, along the ring gear 541 of diapire week side setting be located at the tapped hole 542 at diapire center, wherein ring gear 541 is centered around the bottom outside of aforesaid gears frame lower cover 52, and engage with the small gear 532 of transition gear 53, tapped hole 542 is for installing aforesaid screw rod 6.The second gear 54, as the torque output block of multiple geared system, can rotate relative to gear carrier.With reference to Fig. 2, 9, the screw rod 6 of the present embodiment is followed successively by limited part 61 from top to bottom, screw section 62 and resisting part 63, be provided with spacing hole 5221 at aforementioned lower cover 52 center, limited part 61 is inserted into and in spacing hole 5221, limits screw rod 6 and rotate, when actual design, spacing hole 5221 is designed to D shape, the square abnormity that waits, limited part 61 matches with it, because lower cover 52 is fixed relatively, the two cooperation can limit the rotation of screw rod 6, but do not interfere the axial motion of screw rod 6, again because the second gear 54 is limited in the axial direction, the second gear 54 is by driving screw rod 6 to produce axial displacement with the screw-thread fit of screw section 62.The resisting part 63 of screw rod 6 lower ends has limited step 631 and bulb 632, when this limited step 631 offsets with tapped hole 542 lower end surfaces, can limit screw rod 6 to top offset; The bulb 632 of resisting part 63 is against on spool 41 upper-end surfaces, corresponding, the present embodiment at spool 41 upper end setting-ins spool spindle nose 411, the bulb 632 of resisting part 63 is against on spool spindle nose 411.
On the diapire of the second gear 54, be provided with annular convex rib 543, annular convex rib 543 is arranged around the tapped hole 542 at center.In working procedure, annular convex rib 543 is fitted with the diapire 522 of lower cover 52, thereby can avoid the directly diapire of contact the second gear 54 of diapire of lower cover 52, reduces friction.
With reference to Fig. 2,10, the valve core case 43 of the present embodiment is fixed on valve body 2 upper ends, there is first holding cavity 431 on top and the second holding cavity 432 of bottom, between the two by stepped part 433 transition, aforesaid multiple geared system is fixedly mounted in the first holding cavity 431, concrete, the lower cover sidewall 521 of gear carrier is fixedly connected with valve core case 43 upper end sidewalls, generally adopts welding manner to connect.Aforesaid spool 41 is arranged in the second holding cavity 432, when practical application, the second holding cavity 432 can comprise spring fitting chamber 4321 and directed cavity 4322, aforesaid elastic element 42, can adopt Compress Spring, be enclosed within on spool 41 and spacing in spring fitting chamber 4321, the sidewall of directed cavity 4322 is pressed close to spool 41 sidewalls, guide spool 41 axial motions.The stepped part 433 of valve core case 43 is fixed on circular step groove 21 places of valve body 2 upper ends, and valve core case 43 upper ends are fixedly connected with the sleeve pipe 31 of aforementioned magnetic rotor component 3.
The present embodiment has also designed equalizing orifice 4331 in stepped part 433, can make fluid circulation fast between valve core case 43 and valve body 2, reaches pressure balanced object.
Adopt the valve core case 43 of the present embodiment, multiple geared system is fixedly mounted in the first holding cavity 431, spool 41 is arranged in the second holding cavity 432, in the time of assembling, first valve core case 43 and valve body 2 are welded, again multiple geared system and spool 41 are installed in valve core case 43, greatly reduce the assembling difficulty of speed-reduction type electronic expansion valve, improve efficiency of assembling; In addition, multiple geared system and spool 41 are assembled in a valve core case 43, can make the interior part placement of valve compacter.
In addition, because multiple geared system and spool 41 are assemblied in a valve core case 43, the lower cover 52 of multiple geared system is fixedly connected with valve core case 43 upper end sidewalls, spool 41 is arranged in the second holding cavity 432, its directed cavity 4322 plays the effect that guide spool 41 moves, adopt this assembling mode, can improve the coaxality of multiple geared system and spool 41, reduce the wearing and tearing that gear 532 and spool 41 cause because of coaxiality deviation, improve part working life, also the running of part is more smooth and easy simultaneously, is conducive to improve flow control effect.
With reference to Fig. 1,10, on the valve core case 43 of the present embodiment, be also provided with the location piece 434 that extends to valve body 2 outsides, on location piece 434, be provided with positioning convex 4341, coil block 1 is provided with buckle, buckle one end and coil are fixed, and the other end fastens on positioning convex 4341, by fixing coil block 1.The present embodiment is arranged on location piece on valve core case 43, has removed the operation of independent installation location piece from, improves efficiency of assembling.
The lower cover 52 of the present embodiment gear carrier and the preferred stamping part of valve core case 43, the upper cover 51 of gear carrier and the preferred moulding of the second gear 54, effectively simplified structure, improves efficiency of assembling, reduces experimental manufacturing cost
By above-described embodiment scheme, the electric expansion valve of the present embodiment arranges multiple geared system, can effectively improve valve opening force square, increases control impuls number, has the features such as adjusting is steady, noise is little, flow segmentation.
In other embodiments, above-mentioned transition gear can be multi-stage speed-reducing structure, be after moment is inputted by the first gear, after multi-stage speed-reducing by transition gear, exported by the second gear, for example multiple geared system is tertiary gear speed reducer again, and transition gear comprises one-level transition gear and secondary transition gear, one-level transition gear is engaged between the first gear and secondary transition gear, and secondary transition gear is engaged between the second gear and one-level transition gear.
The utility model embodiment is applied to electric expansion valve, normally speed-reduction type electronic expansion valve.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this, is familiar with this those skilled in the art and should be understood that the utility model includes but not limited to accompanying drawing and the content of describing in embodiment above.Any amendment that does not depart from function and structure principle of the present utility model all will be included in the scope of claims.
Claims (10)
1. an electric expansion valve, comprise valve body, magnetic rotor component and mangetic core assembly, described mangetic core assembly comprises the spool can axial reciprocating moving, described magnetic rotor component comprises magnet rotor and mandrel, between described mandrel and spool, be provided with screw rod, it is characterized in that: also comprise multiple geared system, described multiple geared system comprises gear carrier, be located at gear carrier center and connect the first gear of described mandrel, and the second gear that described screw flight is connected and be engaged in the first gear and the second gear between transition gear, described screw rod lower end and spool offset, the drive screw axial reciprocating that rotatablely moves of described the second gear moves.
2. a kind of electric expansion valve as claimed in claim 1, is characterized in that: described multiple geared system is planet wheel speed reducer, and described transition gear is a planet wheel.
3. a kind of electric expansion valve as claimed in claim 1, it is characterized in that: described multiple geared system is tertiary gear speed reducer, described transition gear comprises one-level transition gear and secondary transition gear, described one-level transition gear is engaged between the first gear and secondary transition gear, and secondary transition gear is engaged between the second gear and one-level transition gear.
4. a kind of electric expansion valve as claimed in claim 1, it is characterized in that: described gear carrier comprises upper cover and lower cover, described lower cover has diapire and step-like sidewall, described the first gear and transition gear are positioned at the space of upper cover and lower cover formation, described the second gear is located at the bottom outside of lower cover, the sidewall of described lower cover is provided with dodges hole, and described transition gear has gearwheel and small gear, and described small gear engages with the second gear through dodging hole.
5. a kind of electric expansion valve as claimed in claim 4, is characterized in that: described cover rim is provided with buckle, the sidewall of described lower cover is provided with draw-in groove, and described upper cover and lower cover are fastened and connected.
6. a kind of electric expansion valve as claimed in claim 4, is characterized in that: described cover rim is provided with location piece, described location piece is provided with limited bayonet, and the sidewall of described lower cover is provided with location convex tendon, and described location convex tendon inserts in limited bayonet.
7. a kind of electric expansion valve as claimed in claim 4, it is characterized in that: described upper cover center is provided with the boss projecting upwards, boss center is provided with core axle hole, described mandrel lower end is provided with first step axle and second step axle, described first step axle passes core axle hole and is fixedly connected with described the first gear, described second step axle and boss offset, and second step axle can rotate freely in core axle hole.
8. a kind of electric expansion valve as described in claim 4 to 7 any one, it is characterized in that: described the second gear comprises diapire, along the ring gear of diapire week side setting be located at the tapped hole at diapire center, described ring gear engages with the small gear of described transition gear, described screw rod comprises limited part, screw section and resisting part, described lower cover center is provided with spacing hole, described limited part inserts in spacing hole and limits screw rod rotation, and described screw section coordinates with tapped hole, and described resisting part and spool offset.
9. a kind of electric expansion valve as described in claim 1 to 7 any one, it is characterized in that: described mangetic core assembly also comprises the valve core case being fixedly connected with valve body, described valve core case comprises the first holding cavity and the second holding cavity, described multiple geared system is fixedly mounted in the first holding cavity, described spool is arranged in the second holding cavity, is provided with the elastic element that coordinates screw rod control valve core movement in described the second holding cavity.
10. a kind of electric expansion valve as claimed in claim 9, is characterized in that: described electric expansion valve also comprises the coil block being arranged on magnetic rotor component, and described valve core case is provided with and extends to valve body outside and the location piece for fixed coil assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357234.7U CN203979607U (en) | 2014-06-30 | 2014-06-30 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357234.7U CN203979607U (en) | 2014-06-30 | 2014-06-30 | A kind of electric expansion valve |
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| Publication Number | Publication Date |
|---|---|
| CN203979607U true CN203979607U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420357234.7U Active CN203979607U (en) | 2014-06-30 | 2014-06-30 | A kind of electric expansion valve |
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| CN (1) | CN203979607U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822822A (en) * | 2015-01-08 | 2016-08-03 | 艾默生环境优化技术(苏州)有限公司 | Speed reducing mechanism and electronic expansion valve comprising same |
| 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 |
| WO2019105454A1 (en) * | 2017-12-01 | 2019-06-06 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and cooling system having same |
| CN109869488A (en) * | 2017-12-01 | 2019-06-11 | 浙江三花智能控制股份有限公司 | Electric expansion valve and refrigeration system with it |
| CN110725985A (en) * | 2018-07-17 | 2020-01-24 | 浙江三花制冷集团有限公司 | Electric ball valve and manufacturing method thereof |
| CN110939747A (en) * | 2018-09-25 | 2020-03-31 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| 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 |
-
2014
- 2014-06-30 CN CN201420357234.7U patent/CN203979607U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822822B (en) * | 2015-01-08 | 2019-08-06 | 艾默生环境优化技术(苏州)有限公司 | Speed reducing mechanism and electronic expansion valve comprising same |
| CN105822822A (en) * | 2015-01-08 | 2016-08-03 | 艾默生环境优化技术(苏州)有限公司 | Speed reducing mechanism and electronic expansion valve comprising same |
| 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 |
| 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 |
| US11168804B2 (en) | 2017-12-01 | 2021-11-09 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electronic expansion valve and cooling system having same |
| CN109869488B (en) * | 2017-12-01 | 2021-10-01 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigeration system with same |
| CN109869488A (en) * | 2017-12-01 | 2019-06-11 | 浙江三花智能控制股份有限公司 | Electric expansion valve and refrigeration system with it |
| WO2019105454A1 (en) * | 2017-12-01 | 2019-06-06 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and cooling system having same |
| CN110725985A (en) * | 2018-07-17 | 2020-01-24 | 浙江三花制冷集团有限公司 | Electric ball valve and manufacturing method thereof |
| US11131397B2 (en) | 2018-07-17 | 2021-09-28 | Zhejiang Sanhua Climate And Appliance Controls Group Co., Ltd | Electric ball valve and manufacturing method therefor |
| CN110725985B (en) * | 2018-07-17 | 2021-11-12 | 浙江三花制冷集团有限公司 | Electric ball valve and manufacturing method thereof |
| CN110939747A (en) * | 2018-09-25 | 2020-03-31 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN110939747B (en) * | 2018-09-25 | 2023-09-12 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
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