CN203489549U - Air conditioner and electronic expansion valve - Google Patents
Air conditioner and electronic expansion valve Download PDFInfo
- Publication number
- CN203489549U CN203489549U CN201320346080.7U CN201320346080U CN203489549U CN 203489549 U CN203489549 U CN 203489549U CN 201320346080 U CN201320346080 U CN 201320346080U CN 203489549 U CN203489549 U CN 203489549U
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- Prior art keywords
- needle
- valve
- expansion valve
- electric expansion
- tilting section
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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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Abstract
The utility model provides an electronic expansion valve, which comprises a valve pin installed on a valve pin base and a valve hole installed on a valve base and coordinated with the valve pin, wherein when the valve pin is at an upper dead center, a pin head of the valve pin has clearance with the top end of the valve hole along an axial direction of the valve pin. With the above arrangement, the valve pin can be separated from the valve hole when the valve pin is at the upper dead center, namely that the valve pin does not carried out throttling of the valve hole. Therefore, circulation area of the valve hole is increased greatly. When the electronic expansion valve is used, circulation volume of a refrigerant can be increased, so that volume of the refrigerant transmitted to an air conditioning outer machine is increased, defrosting time is shortened and defrosting efficiency is increased. The utility model also provides an air conditioner with the electronic expansion valve.
Description
Technical field
The utility model relates to air-conditioning production technical field, particularly a kind of air-conditioning and electric expansion valve thereof.
Background technology
Air-conditioning is under the pattern heating, and what outdoor machine of air-conditioner blew is cold wind, and heat exchange temperature is at subzero several years or tens degree, and now the dewfall on machine fin outside of the steam in outside air, is then frozen into ice cube, forms frost.
After forming frost, off-premises station is blocked by ice cube, cannot dispel the heat, and is easy to make refrigerant in outer machine to evaporate, hypotony, and make system jump low-voltage variation, even shut down.
For the processing that defrosts of the frost on external machine, reaching certain condition, (every kind of air-conditioning dispatches from the factory and sets: if fin temperature is lower than environment temperature preset temperature, and lasting Preset Time), start defrosting, now system changes refrigeration mode into, and cross valve is by inside and outside machine exchange function, in outer machine, refrigerant is HTHP freon, melted ice cube, reached impose a condition (dispatch from the factory and set, be generally outer machine fin temperature and reach preset temperature) rear defrosting and finish.
Electric expansion valve is to regulate evaporimeter liquid supply rate according to pre-set programs, regulates pattern, therefore be called electric expansion valve because belonging to electronic type.It has adapted to the electrical integrated demand for development of refrigeration machine, has the incomparable good characteristic of heating power expansion valve, and for the intellectuality of refrigeration system, control condition is provided, be a kind of rising auto-control energy-saving element.
At present, the aperture of air-conditioner electric expansion valve is 0-500step, is used for transducer air conditioning, and expansion valve opening changes along with factors vary such as indoor and outdoor surroundings temperature, compressor frequencies, so that system is in optimum state.Particularly: electric expansion valve is comprised of valve body and stepper motor two parts, and stepper motor rotates, the needle of traction valve body is done rectilinear motion, thereby changes the circulation area of valve port, reaches the object of throttling.
Because even current electric expansion valve is when the maximum opening, also there is the problem of throttling, make in defrost process, the coolant quantity of circulation is had to certain restriction, therefore, increased the catalyst time, reduced defrosting efficiency.
Therefore, how reducing the amount of restriction of electric expansion valve, to improve defrosting efficiency, is the current technical issues that need to address of those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of electric expansion valve, reduces the amount of restriction of electric expansion valve, to improve defrosting efficiency.Another object of the present utility model is to provide a kind of air-conditioning with above-mentioned electric expansion valve.
For solving the problems of the technologies described above, the utility model provides following technical scheme:
A kind of electric expansion valve, comprise the needle being arranged on needle needle stand and be arranged on valve seat and the valve port coordinating with described needle, wherein, described needle is when top dead centre, and the syringe needle of described needle and the top of described valve port have gap along the axis direction of described needle.
Preferably, in above-mentioned electric expansion valve, described needle at least comprise two sections by described needle backshank the tilting section to described needle syringe needle convergent, and the angle of inclination of adjacent inclined section increases gradually.
Preferably, in above-mentioned electric expansion valve, described needle specifically comprises:
Be arranged on the first tilting section on described needle needle stand, the top of described the first tilting section coordinates with described valve port;
The second tilting section being connected with described the first tilting section, and the angle of inclination of described the second tilting section is greater than the angle of inclination of described the first tilting section.
Preferably, in above-mentioned electric expansion valve, described the first tilting section is connected by knuckle with described the second tilting section.
Preferably, in above-mentioned electric expansion valve, the 0.6-0.95 that the diameter of the junction of described the first tilting section and described the second tilting section is described valve port diameter doubly.
Preferably, in above-mentioned electric expansion valve, the 0.1-0.5 that described the one the second tilting sections are valve port diameter away from the diameter of one end of described the first tilting section doubly.
Preferably, in above-mentioned electric expansion valve, described needle is when top dead centre, and the 0.01-0.1 that the syringe needle of described needle is described valve port diameter to the distance on the top of described valve port doubly.
Preferably, in above-mentioned electric expansion valve, described valve port diameter is 1.8-4.8mm.
An air-conditioning, comprises electric expansion valve, and wherein, described electric expansion valve is the electric expansion valve described in above-mentioned any one.
The utility model provides a kind of electric expansion valve, comprise the needle being arranged on needle needle stand and be arranged on valve seat and the valve port coordinating with above-mentioned needle, wherein, needle is when top dead centre, and the syringe needle of needle and the top of valve port have gap along the axis direction of needle.By above-mentioned setting, can make at needle during in top dead centre, it is separated with valve port, and needle, no longer to valve port throttling, therefore, has increased the circulation area of valve port greatly.When using this electric expansion valve, just can improve the circulation of refrigerant, thereby improve the coolant quantity that is transported to outdoor machine of air-conditioner, shortened defrosting time, improved defrosting efficiency.
The utility model also provides a kind of air-conditioning, it comprises electric expansion valve, and this electric expansion valve is above-mentioned disclosed electric expansion valve, because above-mentioned electric expansion valve has above-mentioned technique effect, therefore the air-conditioning that, has this electric expansion valve also has above-mentioned technique effect.
Accompanying drawing explanation
The structural representation of the electric expansion valve that Fig. 1 provides for the utility model embodiment;
The structural representation during electric expansion valve that Fig. 2 provides for the utility model embodiment zero aperture state;
The structural representation when electric expansion valve that Fig. 3 provides for the utility model embodiment has certain aperture;
The structural representation when electronic expansion valve opening that Fig. 4 provides for the utility model embodiment arrives flex point;
Structural representation during the non-throttling of electric expansion valve that Fig. 5 provides for the utility model embodiment.
The specific embodiment
Core of the present utility model is to provide a kind of electric expansion valve, reduces the amount of restriction of electric expansion valve, to improve defrosting efficiency.Another object of the present utility model is to provide a kind of air-conditioning with above-mentioned electric expansion valve.
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with drawings and embodiments, the utility model is described in further detail.
Please refer to shown in Fig. 1-Fig. 5, the utility model embodiment discloses a kind of electric expansion valve, comprise the needle 12 being arranged on needle needle stand 11 and be arranged on valve seat and the valve port 2 coordinating with above-mentioned needle 12, wherein, needle 12 is when top dead centre, and the top of the syringe needle of needle 12 and valve port 2 has gap along the axis direction of needle 12.
Because needle 12 is when top dead centre (position of the ultimate range that needle moves to the direction away from valve port), its syringe needle is (after electric expansion valve installation, it is near one end of valve port) along the axis direction of needle 12, there is gap with the top of valve port 2, be that needle 12 is when top dead centre, it is separated with valve port 2, now needle 12 no longer carries out throttling to valve port 2, therefore, has increased greatly the circulation area of valve port 2.When using this electric expansion valve, just can improve the circulation of refrigerant, thereby improve the coolant quantity that is transported to outdoor machine of air-conditioner, shortened defrosting time, improved defrosting efficiency.
In the present embodiment, disclosed needle 12 at least comprises that two sections of syringe needles by needle 12 are to the tilting section of the backshank convergent of needle 12, and the angle of inclination of adjacent inclined section increases gradually.By needle 12 is set to multistage, be in tilted layout, and angle of inclination increases gradually, so that in the electric expansion valve course of work, operator can select according to different traffic requirements and needle 12 displacement relations, to meet the requirement to flow sudden change.Changes in flow rate is set to sudden change, so that when defrosting reduces throttling, increases refrigerant circulation.
In specific embodiment, needle 12 specifically comprises: the first tilting section 121 and the second tilting section 122.
Wherein, the top of the first tilting section 121 is arranged on needle needle stand 22, and the diameter of the first tilting section 121 tops (being the backshank of needle) coordinates with the diameter of valve port 2, with the changes in flow rate that guarantees this electric expansion valve since 0, be complete throttling, be illustrated in figure 20 aperture state.It will be understood by those skilled in the art that, in actual production, can the first tilting section 121 of differing tilt angles need to be set according to different throttlings, the angle of inclination of the first tilting section 121 is not specifically limited herein, and do not limit the diameter at the first tilting section 121 tops, can make according to actual needs the aperture of electric expansion valve not since 0 yet.
The second tilting section 122 is connected with the first tilting section 121, and the angle of inclination of the second tilting section 122 is greater than the angle of inclination of the first tilting section 121, to guarantee to realize at the first tilting section 121 and the second tilting section 122 places the sudden change of circulation area, increase fast the circulation of refrigerant, so that quickly defrosting, shorten defrosting time, improve defrosting efficiency.It will be appreciated by persons skilled in the art that for the angle of inclination of the second tilting section 122, be also not specifically limited, can limit according to different needs.
In order to prevent that refrigerant from occurring disturbance at flex point place, and prevent that refrigerant from impacting wearing and tearing to flex point place, in preferred embodiment, the first tilting section 121 is connected by knuckle with the second tilting section 122.Radius and arc length for knuckle can be selected according to length and the angle of inclination of the first tilting section 121 and the second tilting section 122, as long as can realize the first tilting section 121 and the second tilting section 122 rounding ofves.
In one embodiment, the 0.6-0.95 that the diameter of the junction of the first tilting section 121 and the second tilting section 122 (D ' position in Fig. 1) is set to valve port 2 diameters doubly., be only to provide a kind of size of concrete flex point herein, in actual production, can have set according to different traffic requirements, and all in protection domain.
Theoretically, the syringe needle of needle 12 is that needle 12 is the smaller the better near the position (d in Fig. 1) of valve port 2, to reduce the throttling problem to refrigerant as far as possible, but consider reliability of structure and stability, the 0.1-0.5 that in the present embodiment, the diameter of the syringe needle of needle 12 is set to valve port 2 diameters doubly.
Because the movement of needle 12 needs the driving of motor, and the displacement that needle 12 moves can not be excessive, therefore, in another specific embodiment by needle 12 when the top dead centre, the 0.01-0.1 that the syringe needle of needle 12 is set to valve port 2 diameters to the distance on the top of valve port 2 is doubly.In actual production process, can coagulate frost amount according to the defrosting condition of setting and set, and need to jointly to predeterminable range, set according to the heat exchange efficiency of refrigerant flow rate and heat exchanger, to realize the outer machine of the refrigerant flow direction quick and high heat exchange, realize and defrosting.
In order to increase the circulation area of electric expansion valve, in this specific embodiment, on the one hand the diameter of needle 12 is dwindled gradually, the diameter by valve port 2 that on the other hand can be relative is done greatly, further to realize the increase of circulation area.Particularly, the diameter of valve port 2 (D in Fig. 1) is 1.8-4.8mm, and the diameter of the valve port 2 within the scope of this has increased 0.2-5 doubly than the valve port of conventional electronic valve in prior art, therefore, makes amount of restriction less, has effectively increased circulation area.
A kind of air-conditioning is also provided in the utility model embodiment, and it comprises that electronic expansion sends out, and this electric expansion valve is above-mentioned disclosed electric expansion valve.Because this air-conditioning has above-mentioned electric expansion valve, therefore, there is air-conditioning and also there is above-mentioned all technique effects, this is no longer going to repeat them.
In this description, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. an electric expansion valve, comprise the needle (12) being arranged on needle needle stand (11) and be arranged on valve seat and the valve port (2) coordinating with described needle (12), it is characterized in that, described needle (12) is when top dead centre, and the top of the syringe needle of described needle (12) and described valve port (2) has gap along the axis direction of described needle (12).
2. electric expansion valve according to claim 1, is characterized in that, described needle (12) at least comprise two sections by described needle (12) backshank the tilting section to described needle (12) syringe needle convergent, and the angle of inclination of adjacent inclined section increases gradually.
3. electric expansion valve according to claim 2, is characterized in that, described needle (12) specifically comprises:
Be arranged on upper the first tilting section of described needle needle stand (11) (121), the top of described the first tilting section (121) coordinates with described valve port (2);
The second tilting section (122) being connected with described the first tilting section (121), and the angle of inclination of described the second tilting section (122) is greater than the angle of inclination of described the first tilting section (121).
4. electric expansion valve according to claim 3, is characterized in that, described the first tilting section (121) is connected by knuckle with described the second tilting section (122).
5. electric expansion valve according to claim 3, is characterized in that, the diameter of the junction of described the first tilting section (121) and described the second tilting section (122) is 0.6-0.95 times of described valve port (2) diameter.
6. electric expansion valve according to claim 5, is characterized in that, described the second tilting section (122) away from the diameter of one end of described the first tilting section (121) be described valve port (2) diameter 0.1-0.5 doubly.
7. electric expansion valve according to claim 1, is characterized in that, described needle (12) when top dead centre, the syringe needle of described needle (12) to the distance on the top of described valve port (2) be described valve port (2) diameter 0.01-0.1 doubly.
8. according to the electric expansion valve described in claim 1-7 any one, it is characterized in that, described valve port (2) diameter is 1.8-4.8mm.
9. an air-conditioning, comprises electric expansion valve, it is characterized in that, described electric expansion valve is the electric expansion valve described in above-mentioned 1-8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320346080.7U CN203489549U (en) | 2013-06-17 | 2013-06-17 | Air conditioner and electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320346080.7U CN203489549U (en) | 2013-06-17 | 2013-06-17 | Air conditioner and electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203489549U true CN203489549U (en) | 2014-03-19 |
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ID=50260375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320346080.7U Expired - Lifetime CN203489549U (en) | 2013-06-17 | 2013-06-17 | Air conditioner and electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203489549U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236180A (en) * | 2013-06-17 | 2014-12-24 | 珠海格力电器股份有限公司 | Air conditioner and electronic expansion valve thereof |
| CN106369893A (en) * | 2016-11-21 | 2017-02-01 | 珠海格力电器股份有限公司 | Air conditioner and electronic expansion valve of air conditioner |
| WO2017024795A1 (en) * | 2015-08-11 | 2017-02-16 | 浙江三花制冷集团有限公司 | Electronic expansion valve |
-
2013
- 2013-06-17 CN CN201320346080.7U patent/CN203489549U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236180A (en) * | 2013-06-17 | 2014-12-24 | 珠海格力电器股份有限公司 | Air conditioner and electronic expansion valve thereof |
| WO2017024795A1 (en) * | 2015-08-11 | 2017-02-16 | 浙江三花制冷集团有限公司 | Electronic expansion valve |
| US10670011B2 (en) | 2015-08-11 | 2020-06-02 | Zhejiang Sanhua Climate And Appliance Controls Group Co., Ltd | Electronic expansion valve |
| CN106369893A (en) * | 2016-11-21 | 2017-02-01 | 珠海格力电器股份有限公司 | Air conditioner and electronic expansion valve of air conditioner |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140319 |
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| CX01 | Expiry of patent term |