CN203421269U - Electronic expansion valve with speed reducing mechanism and refrigerating system - Google Patents
Electronic expansion valve with speed reducing mechanism and refrigerating system Download PDFInfo
- Publication number
- CN203421269U CN203421269U CN201320498991.1U CN201320498991U CN203421269U CN 203421269 U CN203421269 U CN 203421269U CN 201320498991 U CN201320498991 U CN 201320498991U CN 203421269 U CN203421269 U CN 203421269U
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- Prior art keywords
- driving gear
- expansion valve
- electric expansion
- valve
- gear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model discloses an electronic expansion valve with a speed reducing mechanism and a refrigerating system. The electronic expansion valve comprises a valve seat (15) and a valve body (11), wherein a valve needle assembly (13) matched with a valve opening of the valve seat (15), a motor (12) and a bearing (21) arranged between an output shaft of the motor and the motor outer end cover (121) are arranged in the valve body (11), and the motor (12) drives the valve needle assembly through the speed reducing mechanism, The speed reducing mechanism comprises a driving gear arranged on the output shaft of the motor, and a first transmission gear matched and meshed with the driving gear, wherein the interval between the first transmission gear and the motor outer end cover is smaller than the interval between the bearing and the first transmission gear. By means of the electronic expansion valve, transmission teeth of the first transmission gear can be effectively prevented from making contact with the bearing, the transmission teeth of the first transmission gear and the bearing can be protected, abrasion between the first transmission gear and the bearing is eliminated, the transmission teeth of the first transmission gear are beneficially protected, and the reliability of transmission is ensured.
Description
Technical field
The utility model relates to heat transfer technology field, particularly a kind of electric expansion valve with reducing gear and refrigeration system.
Background technique
Electric expansion valve is one of primary component of refrigeration system, and electric expansion valve is arranged at the upstream of vaporizer, and Main Function is for changing high pressure, the cooling liquid refrigerant of the degree of depth into liquid and the vapour mixture of low pressure, low temperature.
Wherein, with the electric expansion valve of reducing gear, be a kind of typical electric expansion valve, because being provided with reducing gear, its inside can, by the reduction speed ratio of reducing gear is rationally set, reach the object of the moment of torsion that increases rotating shaft.Introduce the concrete structure of a kind of electric expansion valve with reducing gear conventional in prior art below.
Please refer to Fig. 1, Fig. 1 is a kind of typically with the structural representation of the electric expansion valve of reducing gear in prior art.
This electric expansion valve comprises valve seat 5 and valve body 1, on valve seat 5, be provided with medium import 5a and media outlet 5b, medium import 5a and media outlet 5b are communicated with by the inner valve port arranging of valve seat 5, in valve body 1, be provided with the motor 2 of the needle assembly that coordinates with valve port and the action of valve needle assembly, motor 2 can valve needle assembly knee-action, aperture between control valve needle assemblies and valve port, controls thereby realize the object that flows through valve port flow.
In prior art reducing gear mainly comprise be arranged at the driving gear 3 of output on main shaft and with the first driving gear 4 of driving gear 3 fit engagement, take reducing gear as two reduction gear be example, reducing gear also comprises the second driving gear 7 with the first driving gear 4 engagements, the second driving gear 7 is installed on the upper end portion of transmission shaft 8, needle assembly 9 is located at the underpart of transmission shaft 8, for needle assembly 9 can selectivity be moved towards valve port or away from valve port, the underpart of gear shaft is provided with screw section, by screw section, connects.
Because electric expansion valve valve intracavity gas forms scouring force by the aperture on 39, can cause unavoidably on the first driving gear 4 and lift phenomenon, in addition, the horizontal dress of valve body or upside-down mounting are in air-conditioning system, also may make driving gear collide the motor bearings 6 of its upper end, facts have proved, the driving cog of the first driving gear often with bearing 6 collisions, yet between bearing 6 and the first driving gear 4, wear-resisting wiping parts are set is difficults, so not only aggravate bearing and gear wear, and increased resistance when gear meshes, affect the reliability of transmission.
Therefore, how improving the structure of electric expansion valve in prior art, avoid the driving cog portion of driving gear and the collision between bearing, is those skilled in that art's technical problems urgently to be resolved hurrily.
Model utility content
The purpose of this utility model is for providing a kind of electric expansion valve with reducing gear, and this electric expansion valve can effectively be avoided the driving cog portion of driving gear and the collision between bearing, improves the reliability of transmission.Another object of the present utility model is for providing a kind of refrigeration system with above-mentioned electric expansion valve.
For solving the problems of the technologies described above, the utility model provides a kind of electric expansion valve with reducing gear, a kind of electric expansion valve with reducing gear, comprise valve seat and valve body, in described valve body, there is the needle assembly coordinating with the valve port of described valve work, motor and be located at the output shaft of described motor and the bearing between motor outer-end cover, described motor via reducer structure drives described needle assembly, described reducing gear comprise the output shaft that is placed in described motor driving gear and with the first driving gear of described driving gear fit engagement, the spacing of described the first driving gear and described motor outer-end cover is less than the spacing of described bearing and described the first driving gear.
Preferably, the transmission shaft of described the first driving gear is multidiameter shaft, and described multidiameter shaft is provided with First terrace, and described the first driving gear is located between described First terrace and described motor outer-end cover.
Preferably, the diameter of described the first driving gear and described First terrace contact jaw portion is greater than the diameter of described First terrace.
Preferably, the transmission shaft of described the first driving gear is provided with second-order tread away from the end of described motor outer-end cover, and the transmission shaft of described the first driving gear is installed in described valve body by described second-order tread.
Preferably, described the first driving gear is provided with boss on the end face of described motor, and the spacing of described boss and described motor outer-end cover is the spacing of described the first driving gear and described motor outer-end cover.
Preferably, described boss is around the annular boss that the transmission shaft mounting hole of described the first driving gear is installed.
Preferably, the junction surface between the end face of described annular boss and the end face of described the first driving gear is conical surface.
Preferably, between described the first driving gear and described motor outer-end cover, be also provided with wear-resistant gasket.
Preferably, described wear-resistant gasket is Graphite pad or teflon gasket.
In the utility model, the spacing of the first driving gear and motor outer-end cover is less than the spacing of the first driving gear and bearing, when electric expansion valve at work, because the pressure of valve port place medium promotes the first driving gear play that makes progress, the first driving gear is in the play process that makes progress, because the spacing of the first driving gear and motor outer-end cover is less than the spacing of the first driving gear and bearing 21, the first driving gear will be first against motor outer-end cover, under the effect of motor outer-end cover, suppress the first driving gear and continue upwards play, thereby contacting between the driving cog of effectively having avoided the first driving gear and bearing 21, driving cog and the bearing of the first driving gear have effectively been protected, the wearing and tearing between the first driving gear and bearing have been eliminated, be conducive to protect the driving cog portion of the first driving gear, guarantee the reliability of transmission, and, motor outer-end cover in the utility model is fixed component, wear-resisting wiping parts are set on motor outer-end cover will be easily a lot, reduce the wearing and tearing of the first driving gear and motor outer-end cover.
In addition, on the basis of above-mentioned electric expansion valve, the utility model also provides a kind of refrigeration system, comprise compressor, vaporizer, condenser and be connected in described condenser and described vaporizer between the electric expansion valve with reducing gear, described electric expansion valve is the electric expansion valve with reducing gear described in above-mentioned arbitrary embodiment.
Because this refrigeration system has above-mentioned electric expansion valve, therefore refrigeration system also has the above-mentioned technique effect of electric expansion valve, at this, do not repeating.
Accompanying drawing explanation
Fig. 1 is a kind of typically with the structural representation of the electric expansion valve of reducing gear in prior art;
Fig. 2 is with the structural representation of the electric expansion valve of reducing gear in a kind of embodiment of the utility model;
Fig. 3 is the local enlarged diagram in Fig. 2;
Fig. 4 is the structural representation of transmission shaft in a kind of embodiment of the utility model;
Fig. 5 is the structural representation of the first driving gear in a kind of embodiment of the utility model;
Fig. 6 is the sectional view of the first driving gear shown in Fig. 5.
Wherein, in Fig. 1, the one-to-one relationship between reference character and component names is as follows:
1 valve body, 2 motors, 3 driving gears, 4 first driving gears, 5 valve seats, the import of 5a medium, 5b media outlet, 6 bearings, 7 second driving gears, 8 transmission shafts, 9 needle assemblies.
Wherein, in Fig. 2 to Fig. 6, the one-to-one relationship between reference character and component names is as follows:
11 valve bodies, 12 motors, 121 motor outer-end covers, 122 output shafts, 21 bearings, 30 driving gears, 31 first driving gears, 31a annular boss, 311 conical surfaces, 312 first driving cog portions, 313 second driving cog portions, 32 first driving gearshafts, 32a First terrace, 32b second step face, 34 second driving gears, 35 second driving gearshafts, 13 needle assemblies, 14 wear-resistant gaskets, 15 valve seats.
Embodiment
Core of the present utility model is for providing a kind of electric expansion valve with reducing gear, and this electric expansion valve can effectively be avoided the driving cog portion of driving gear and the collision between bearing, improves the reliability of transmission.Another core of the present utility model is for providing a kind of refrigeration system with above-mentioned electric expansion valve.
The reducing gear of take in electric expansion valve is herein introduced technological scheme as double reduction as example, certainly those skilled in that art are to be understood that, the application of the technical program is including, but not limited to double reduction electric expansion valve, can also be for having the electric expansion valve of the reducing gear of one-level, three grades or more grades.
In order to make those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is with the structural representation of the electric expansion valve of reducing gear in a kind of embodiment of the utility model; Fig. 3 is the local enlarged diagram in Fig. 2.
Electric expansion valve with reducing gear provided by the utility model comprises valve seat 15 and valve body 11, valve body 11 is installed on valve seat 15, the two forms a Seal cage, on valve seat 15, be provided with medium import and media outlet, medium import and media outlet are communicated with by the inner valve port arranging of valve seat, in valve body 11, be also provided with the motor 12 of the needle assembly 13 that coordinates with valve port and 13 actions of valve needle assembly, motor 12 can be stepper motor, motor 12 can valve needle assembly 13 knee-actions, aperture between control valve needle assemblies 13 and valve port, thereby realize, control the object that flows through valve port flow.
The output shaft 122 of motor and the bearing 21 between motor outer-end cover 121, bearing 21 is generally oil bearing, reducing gear comprise the output shaft 122 that is placed in motor driving gear 30 and with the first driving gear 31 of driving gear 30 fit engagement, the first driving gear 31 meshes with the driving cog portion of driving gear 30 by the first driving cog portion 312 arranging on it, for the reducing gear of double reduction, also comprise the second driving gear 34, the first driving gear 31 is also provided with the second driving cog portion 313 with the second driving gear 34 fit engagement, the underpart of the transmission shaft of the second driving gear 34 (referred to as the second driving gearshaft 35) is connected with needle assembly 13.
The first driving gear 31 of the electric expansion valve in the utility model and the spacing of motor outer-end cover 121 are less than the spacing of the first driving gear 31 and bearing 21.
It should be noted that, the first driving gear 31 of indication refers to such an extent that be that motor outer-end cover 121 is to the spacing of the end face part of its first corresponding driving gear 31 with the spacing of motor outer-end cover 121 herein, in like manner, the first driving gear 31 refers to such an extent that be that bearing 21 end faces are to the spacing of the end face part of its first corresponding driving gear 31 with the spacing of bearing 21.
In the utility model, the spacing of the first driving gear 31 and motor outer-end cover 121 is less than the spacing of the first driving gear 31 and bearing 21, when electric expansion valve at work, when promoting the residing transmission shaft of the first driving gear 31 and move upward due to the pressure of valve port place medium, under the drive of transmission shaft, the first driving gear 31 play that also will make progress, the first driving gear 31 is in the play process that makes progress, because the spacing of the first driving gear 31 and motor outer-end cover 121 is less than the spacing of the first driving gear 31 and bearing 21, the first driving gear 31 will be first against motor outer-end cover 121, under the effect of motor outer-end cover 121, suppress the first driving gear 31 and continue upwards play, thereby contacting between the driving cog of effectively having avoided the first driving gear 31 and bearing 21, driving cog and the bearing 21 of the first driving gear 31 have effectively been protected, the wearing and tearing between the first driving gear 31 and bearing 21 have been eliminated, be conducive to protect the driving cog of the first driving gear 31, guarantee the reliability of transmission, and, motor outer-end cover 121 in the utility model is fixed component, wear-resisting wiping parts are set on motor outer-end cover 121 will be easily a lot, reduce the wearing and tearing of the first driving gear 31 and motor outer-end cover 121.
Please refer to Fig. 4, Fig. 4 is the structural representation of transmission shaft in a kind of embodiment of the utility model.
A kind of preferred embodiment in, the transmission shaft of the first driving gear can be multidiameter shaft, referred to as the first driving gearshaft 32, multidiameter shaft is provided with First terrace 32a, the first driving gearshaft 31 is located between First terrace 32a and motor outer-end cover 121, First terrace 32a can play certain position-limiting action to the first driving gear 31 like this, and when electric expansion valve is vertically installed, First terrace 32a can play a supporting role to the first driving gear 31, is conducive to improve the reliability of transmission.
In above-described embodiment, the first driving gear 31 contacts end diameter with First terrace 32a is greater than the diameter of First terrace 32a, from Fig. 3, the diameter of the contact end of the first driving gear 31 is far longer than the diameter of First terrace 32a, in this mode of execution, the transmission surface of contact of First terrace 32a and the first driving gear 31 is smaller, surface friction drag is just smaller, greatly reduces transmission loss.
Further, the transmission shaft of the first driving gear 31 is provided with second step face 32b away from the end of motor outer-end cover 121, and the transmission shaft of the first driving gear 31 is installed in valve body 11 by second step face 32b; Facilitate like this installation of transmission shaft.
Please refer to Fig. 5 and Fig. 6, Fig. 5 is the structural representation of the first driving gear in a kind of embodiment of the utility model; Fig. 6 is the sectional view of the first driving gear shown in Fig. 5.
In a kind of concrete mode of execution, above-mentioned the first driving gear 31 is provided with boss on the end face of motor 12, and the spacing of boss and motor outer-end cover 121 is the spacing of the first driving gear 31 and motor outer-end cover 121.
Certainly, the shape of above-mentioned boss can be various ways, can be column, taper etc., has introduced boss below preferred embodiment a kind of.
A kind of preferred embodiment in, above-mentioned boss can be that annular boss 31a processes than being easier to around the annular boss 31a that the transmission shaft mounting hole of the first driving gear 31 is installed.
Further, the junction surface between the end face of annular boss 31a and the end face of the first driving gear 31 can be conical surface 311, and processing technology is fairly simple.
In the various embodiments described above, between the first driving gear 31 and motor outer-end cover 121, can also be provided with wear-resistant gasket 14, wear-resistant gasket 14 can increase anti-attrition and the wear-resisting effect between driving gear and motor outer-end cover 121.
Wear-resistant gasket 14 can be fixed in the boss surface of driving gear, also can be fixed on the surface of motor outer-end cover 121.
Wear-resistant gasket 14 in the various embodiments described above can be the reasonable Graphite pad of wear resistance or teflon gasket.
In addition, on the basis of above-mentioned electric expansion valve, the utility model also provides a kind of refrigeration system, comprise compressor, vaporizer, condenser and be connected in described condenser and described vaporizer between the electric expansion valve with reducing gear, described electric expansion valve is the electric expansion valve with reducing gear described in above-mentioned arbitrary embodiment.
Because this refrigeration system has above-mentioned electric expansion valve, therefore refrigeration system also has the above-mentioned technique effect of electric expansion valve, at this, do not repeating.
The otherwise data of refrigeration system, please refer to prior art.
Above a kind of electric expansion valve with reducing gear provided by the utility model and refrigeration system are described in detail.Applied specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. the electric expansion valve with reducing gear, comprise valve seat (15) and valve body (11), in described valve body (11), there is the needle assembly (13) coordinating with the valve port of described valve seat (15), motor (12) and be located at the output shaft of described motor and the bearing (21) between motor outer-end cover (121), described motor (12) drives described needle assembly (13) by reducing gear, described reducing gear comprise the output shaft (122) that is placed in described motor driving gear (30) and with first driving gear (31) of described driving gear (30) fit engagement, it is characterized in that, the spacing of described the first driving gear (31) and described motor outer-end cover (121) is less than the spacing of described bearing and described the first driving gear (31).
2. electric expansion valve as claimed in claim 1, it is characterized in that, the transmission shaft of described the first driving gear (31) is multidiameter shaft, described multidiameter shaft is provided with First terrace (32a), and described the first driving gear (31) is located between described First terrace (32a) and described motor outer-end cover (121).
3. electric expansion valve as claimed in claim 2, is characterized in that, described the first driving gear (31) contacts end diameter with described First terrace (32a) is greater than the diameter of described First terrace (32a).
4. electric expansion valve as claimed in claim 3, it is characterized in that, the transmission shaft of described the first driving gear (31) is provided with second step face (32b) away from the end of described motor outer-end cover (121), and the transmission shaft of described the first driving gear (31) is installed in described valve body (11) by described second step face (32b).
5. the electric expansion valve as described in claim 1 to 4 any one, it is characterized in that, described the first driving gear (31) is provided with boss on the end face of described motor (12), and the spacing of described boss and described motor outer-end cover (121) is the spacing of described the first driving gear (31) and described motor outer-end cover (121).
6. electric expansion valve as claimed in claim 5, is characterized in that, described boss is around the annular boss (31a) that the transmission shaft mounting hole of described the first driving gear (31) is installed.
7. electric expansion valve as claimed in claim 6, is characterized in that, the junction surface between the end face of described annular boss (31a) and the end face of described the first driving gear (31) is conical surface (311).
8. electric expansion valve as claimed in claim 5, is characterized in that, between described the first driving gear (31) and described motor outer-end cover (121), is also provided with wear-resistant gasket (14).
9. electric expansion valve as claimed in claim 8, is characterized in that, described wear-resistant gasket (14) is Graphite pad or teflon gasket.
10. a refrigeration system, comprise compressor, vaporizer, condenser and be connected in described condenser and described vaporizer between the electric expansion valve with reducing gear, it is characterized in that, described electric expansion valve is the electric expansion valve with reducing gear described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498991.1U CN203421269U (en) | 2013-08-15 | 2013-08-15 | Electronic expansion valve with speed reducing mechanism and refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498991.1U CN203421269U (en) | 2013-08-15 | 2013-08-15 | Electronic expansion valve with speed reducing mechanism and refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203421269U true CN203421269U (en) | 2014-02-05 |
Family
ID=50020368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320498991.1U Expired - Lifetime CN203421269U (en) | 2013-08-15 | 2013-08-15 | Electronic expansion valve with speed reducing mechanism and refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203421269U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020135162A1 (en) * | 2018-12-25 | 2020-07-02 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and air conditioning system using same |
| CN111365466A (en) * | 2018-12-25 | 2020-07-03 | 浙江盾安禾田金属有限公司 | Electronic expansion valve and air conditioning system using same |
-
2013
- 2013-08-15 CN CN201320498991.1U patent/CN203421269U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020135162A1 (en) * | 2018-12-25 | 2020-07-02 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and air conditioning system using same |
| CN111365466A (en) * | 2018-12-25 | 2020-07-03 | 浙江盾安禾田金属有限公司 | Electronic expansion valve and air conditioning system using same |
| US11796234B2 (en) | 2018-12-25 | 2023-10-24 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and air conditioning system with electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160811 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee after: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. Address before: 312500 Liquan village of Chengguan Zhejiang city of Shaoxing province Xinchang County town Patentee before: ZHEJIANG SANHUA Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20140205 |
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| CX01 | Expiry of patent term |