CN203082326U - Worm gear speed reduction type electronic expansion valve - Google Patents
Worm gear speed reduction type electronic expansion valve Download PDFInfo
- Publication number
- CN203082326U CN203082326U CN2013200136731U CN201320013673U CN203082326U CN 203082326 U CN203082326 U CN 203082326U CN 2013200136731 U CN2013200136731 U CN 2013200136731U CN 201320013673 U CN201320013673 U CN 201320013673U CN 203082326 U CN203082326 U CN 203082326U
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- CN
- China
- Prior art keywords
- worm
- worm gear
- screw rod
- expansion valve
- stepper motor
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- 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.)
- Expired - Lifetime
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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
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- Mechanically-Actuated Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses a worm gear speed reduction type electronic expansion valve which comprises a valve body assembly, a driving system and a sealing assembly. The sealing assembly is arranged between the valve body assembly and the driving system. The valve body assembly is provided with a valve core. The driving system comprises a step motor and a worm gear transmission mechanism used for driving the valve core to move. The step motor is connected with the worm gear transmission mechanism. The worm gear transmission mechanism is connected with the valve core. According to the worm gear speed reduction type electronic expansion valve, a worm gear speed reduction system is adopted, the structure is simple, the number of parts is small, and transmission with a large transmission ratio can be easily achieved on the premise that the structure size is not changed.
Description
Technical field:
The utility model relates to the electronic expansion valve technology field, especially relates to a kind of worm gear reducer formula electric expansion valve that specifically is applied in the central air conditioner main machine system.
Background technique:
In the prior art, speed-reduction type electronic expansion valve is compared with direct-acting type electronics expansion valve, Flow-rate adjustment is more accurate, it is linear that Flow characteristics more is tending towards, regulation quality is better, stepper motor has increased the output torque greatly through the deceleration system transferring power, can be applicable in the bigger refrigeration system of flow adjustment range.Existing speed-reduction type electronic expansion valve, as shown in Figure 1, comprise valve component 1, drive system 2 and black box 3, its deceleration system adopts fixed shaft gear train, satisfy the requirement of reduction speed ratio by the multi-stage gear engagement driving, complex structure, amount of parts is many, is difficult to realize the big speed ratio transmission under the prerequisite that does not increase physical dimension.Therefore be necessary to be improved.
The model utility content:
At the deficiency that prior art exists, the purpose of this utility model provides a kind of worm gear reducer formula electric expansion valve, and it is simple in structure, and amount of parts is few, realizes the big speed ratio transmission easily.
To achieve these goals, the technological scheme that the utility model adopted is:
A kind of worm gear reducer formula electric expansion valve, comprise valve component, drive system, black box, black box is arranged between valve component and the drive system, valve component is provided with spool, drive system comprises stepper motor and is used to drive the Worm and worm-wheel gearing that spool moves, stepper motor connects Worm and worm-wheel gearing, and Worm and worm-wheel gearing connects spool.
Further, described Worm and worm-wheel gearing comprises worm screw, worm gear, screw rod and is used to drive the screw rod cover that spool moves up and down, worm screw is fixed in the rotating shaft of stepper motor, the worm and wheel transmission cooperates, the screw rod upper end is fixed in worm gear, screw rod and the coaxial rotation of worm gear, screw rod lower end and the engagement of screw rod cover, the screw rod cover connects spool.
Further, described Worm and worm-wheel gearing comprises bearing, and the lower cover of stepper motor is provided with bearing support, bearing press mounting on the bearing support of stepper motor lower cover, interference fit between bearing and the bearing support.
Further, described worm and wheel is the space interlaced arrangement and is meshing with each other.
Further, the central part of described worm gear offers mounting hole, and the upper end of screw rod is fixed in the mounting hole of worm gear, interference fit between the upper end of screw rod and the mounting hole of worm gear.
After adopting said structure, the utility model is compared the advantage that is had with prior art and is:
(1), adopt worm type of reduction gearing in the drive system, can obtain bigger single staged transmission ratio, amount of parts is few, compact structure;
(2), the engagement of worm tooth and worm-gear tooth progresses into or withdraws from engagement in the worm type of reduction gearing, thereby stable drive, vibration and noise are little;
(3), worm and wheel is the space interlaced arrangement in the drive system, transmits the motion and the power of space alternating axis, and the stepper motor mounting point is freely made things convenient for;
(4), be covered with the stepper motor installation position under the motor, make that motor is installed, convenient fixing, good operation stability;
(5), the worm and worm gear engagement driving has self-locking performance, can reduce the reaction of load torque to stepper motor during work, thereby reduce the stepper motor step-out.
Description of drawings:
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of the speed-reduction type electronic expansion valve of prior art.
Fig. 2 is the structural representation of speed-reduction type electronic expansion valve of the present utility model.
Fig. 3 is the internal structure signal office of speed-reduction type electronic expansion valve of the present utility model.
Among the figure: 1, valve component 2, drive system 201, screw rod cover, 202, screw rod 203, bearing 204, stepper motor 205, worm screw 206, worm gear 3, black box.
Embodiment:
The following stated only is preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
Embodiment, see that Fig. 2 is to shown in Figure 3: a kind of worm gear reducer formula electric expansion valve, be mainly used in the central air conditioner main machine system, can regulate cold medium flux and realize the throttling hypotensive effect, comprise valve component 1, drive system 2, black box 3, black box 3 is arranged between valve component 1 and the drive system 2, valve component 1 is provided with spool, drive system 2 comprises stepper motor 204 and is used to drive the Worm and worm-wheel gearing that spool moves, stepper motor 204 connects Worm and worm-wheel gearing, and Worm and worm-wheel gearing connects spool.
Worm and worm-wheel gearing comprises worm screw 205, worm gear 206, screw rod 202 and is used to drive the screw rod cover 201 that spool moves up and down, worm screw 205 is fixed in the rotating shaft of stepper motor 204, worm screw 205 cooperates with worm gear 206 transmissions, and worm screw 205 is the space interlaced arrangement with worm gear 206 and is meshing with each other.Screw rod 202 upper ends are fixed in worm gear 206, screw rod 202 and worm gear 206 coaxial rotations, and the central part of worm gear 206 offers mounting hole, and the upper end of screw rod 202 is fixed in the mounting hole of worm gear 206, interference fit between the mounting hole of the upper end of screw rod 202 and worm gear 206.Screw rod 202 lower ends and 201 engagements of screw rod cover, screw rod cover 201 connects spool.
Worm and worm-wheel gearing also is provided with a bearing 203, and the lower cover of stepper motor 204 is provided with bearing support, and bearing 203 press-fits on the bearing support of stepper motor 204 lower covers, interference fit between bearing 203 and the bearing support.
During work, the locking system that drive system 2 places valve component 1 and black box 3 to form, rotatablely moving of controller output pulse control step motor 204, stepper motor 204 drives worm screw 205 and rotates, worm screw 205 and worm gear 206 engagement driving, increasing through slowing down will rotatablely move behind the square passes to screw rod 202, screw rod 202 overlaps 201 engagement driving with screw rod, to rotatablely move and convert straight line motion to, screw rod overlaps 201 lower ends and spool 301 is affixed, thereby drive spool 301 moves up and down change refrigerant circulation area, regulate cold medium flux, throttling step-down, and then the control air-conditioning system degree of superheat.The utility model adopts the worm and gear deceleration system, and simple in structure, amount of parts is few, realizes the big speed ratio transmission under the prerequisite that does not change physical dimension easily.
Above content only is preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (5)
1. worm gear reducer formula electric expansion valve, comprise valve component (1), drive system (2), black box (3), black box (3) is arranged between valve component (1) and the drive system (2), valve component (1) is provided with spool, it is characterized in that: drive system (2) comprises stepper motor (204) and is used to drive the Worm and worm-wheel gearing that spool moves, stepper motor (204) connects Worm and worm-wheel gearing, and Worm and worm-wheel gearing connects spool.
2. a kind of worm gear reducer formula electric expansion valve according to claim 1, it is characterized in that: described Worm and worm-wheel gearing comprises worm screw (205), worm gear (206), screw rod (202) and be used to drive the screw rod cover (201) that spool moves up and down, worm screw (205) is fixed in the rotating shaft of stepper motor (204), worm screw (205) cooperates with worm gear (206) transmission, screw rod (202) upper end is fixed in worm gear (206), screw rod (202) and the coaxial rotation of worm gear (206), screw rod (202) lower end and screw rod cover (201) engagement, screw rod cover (201) connects spool.
3. a kind of worm gear reducer formula electric expansion valve according to claim 2, it is characterized in that: described Worm and worm-wheel gearing comprises bearing (203), the lower cover of stepper motor (204) is provided with bearing support, bearing (203) press-fits on the bearing support of stepper motor (204) lower cover, interference fit between bearing (203) and the bearing support.
4. a kind of worm gear reducer formula electric expansion valve according to claim 2 is characterized in that: described worm screw (205) is the space interlaced arrangement with worm gear (206) and is meshing with each other.
5. a kind of worm gear reducer formula electric expansion valve according to claim 2, its feature
Be: the central part of described worm gear (206) offers mounting hole, and the upper end of screw rod (202) is fixed in the mounting hole of worm gear (206), interference fit between the mounting hole of the upper end of screw rod (202) and worm gear (206).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200136731U CN203082326U (en) | 2013-01-10 | 2013-01-10 | Worm gear speed reduction type electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200136731U CN203082326U (en) | 2013-01-10 | 2013-01-10 | Worm gear speed reduction type electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203082326U true CN203082326U (en) | 2013-07-24 |
Family
ID=48828164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200136731U Expired - Lifetime CN203082326U (en) | 2013-01-10 | 2013-01-10 | Worm gear speed reduction type electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203082326U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791544A (en) * | 2014-01-20 | 2015-07-22 | 浙江三花股份有限公司 | Directly operated type electric valve and assembly method thereof |
| JP2018025302A (en) * | 2014-01-20 | 2018-02-15 | 浙江三花制冷集団有限公司 | Direct action-type electrically-operated valve and its mounting method |
-
2013
- 2013-01-10 CN CN2013200136731U patent/CN203082326U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791544A (en) * | 2014-01-20 | 2015-07-22 | 浙江三花股份有限公司 | Directly operated type electric valve and assembly method thereof |
| JP2018025302A (en) * | 2014-01-20 | 2018-02-15 | 浙江三花制冷集団有限公司 | Direct action-type electrically-operated valve and its mounting method |
| US10352467B2 (en) | 2014-01-20 | 2019-07-16 | Zhejiang Sanhua Climate And Appliance Controls Group Co., Ltd | Direct-action-type electrically-operated valve and assembly method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |