CN208153800U - A kind of two-period form electric expansion valve - Google Patents
A kind of two-period form electric expansion valve Download PDFInfo
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- CN208153800U CN208153800U CN201820244945.1U CN201820244945U CN208153800U CN 208153800 U CN208153800 U CN 208153800U CN 201820244945 U CN201820244945 U CN 201820244945U CN 208153800 U CN208153800 U CN 208153800U
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- electric expansion
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Abstract
The utility model discloses a kind of two-period form electric expansion valves, including valve body, the valve body be provided with valve chamber be connected to the big valve port of valve chamber, the big needle component for opening and closing big valve port is equipped in the valve chamber, the big needle component includes big needle, the big needle is equipped with valve opening and is connected to the small valve port of valve opening, and the valve opening is connected with the small needle for opening and closing small valve port, and the small needle is provided with from small needle bottom and is connected to the through flow hole that valve chamber is located at big needle above section upwards.The technical solution adopted in the utility model passes through through flow hole and carries out pressure release when importing and exporting the increasing of side pressure difference, realizes inlet and outlet side pressure balance.
Description
Technical field
The utility model relates to air-conditioning technical fields, and in particular to electric expansion valve.
Background technique
Electric expansion valve is mainly used in all kinds of refrigeration such as air-conditioning, Teat pump boiler, in heating equipment at present, for controlling
Fluid flow, the basic principle is that gas/liquid flow is adjusted by the aperture for controlling electric expansion valve, to realize system function
And achieve the purpose that accurately to control；Common expansion valve mainly includes that direct driving type electronic expansion valve and speed-reduction type electronic are swollen in the market
Swollen valve is influenced by valve opening difference force, and the bore of direct driving type electronic expansion valve is generally no greater than 3.2mm, is greater than 3.2mm bore one
As select speed-reduction type electronic expansion valve, such electric expansion valve mainly use The gear deceleration structure increase driving moment, to guarantee
Valve opening driving moment, such expansion valve mechanism are complicated, and size is big, at high cost, application reliability is relatively low；Two-period form electronic expansion
Two valve ports are usually arranged in valve, realize that two sections of flows are adjusted, and small needle control delicate flow control, big valve head guarantees full-gear
Lower big flow, big aperture；Small valve port bore is generally within 2.0mm, in order to carry out flow fine adjustment；Big valve port generally exists
8.0mm or more, to guarantee CV value requirement when valve body standard-sized sheet.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of two sections for can balancing valve head or more difference force
Formula electric expansion valve.
In order to solve the above technical problems, the utility model adopts the following technical solution：A kind of two-period form electric expansion valve, packet
Include valve body, the valve body be provided with valve chamber be connected to the big valve port of valve chamber, be equipped with the big needle for opening and closing big valve port in the valve chamber
Component, the big needle component includes big needle, and the big needle is equipped with valve opening and is connected to the small valve port of valve opening, the valve opening
It is connected with the small needle for opening and closing small valve port, the small needle, which is provided with, to be connected to valve chamber from small needle bottom upwards and be located at big needle
The through flow hole of above section.
Preferably, the valve body is equipped with guide sleeve at valve chamber place suitable for reading, and the guide sleeve is equipped with matches with big needle guiding
The major diameter pilot hole of conjunction and the path pilot hole cooperated with small needle guiding.
Preferably, the first sealing ring with the sealing cooperation of major diameter pilot hole inner wall is installed in the outer circle of the big needle.
Preferably, the second sealing ring with the sealing cooperation of small needle outer circle is installed in the valve opening.
Preferably, the valve opening is equipped with first step above small valve port, is equipped with the second sealing on the first step
Circle.
Preferably, the valve opening connects on the upside of first step is provided with the second step that bore is greater than first step, institute
It states and the first pressing sleeve that restricted second sealing ring moves up is installed on second step.
Preferably, the middle part of the small needle is equipped with flange, and the suitable for reading of the valve opening is equipped with third step, the third platform
Interference is pressed with the second pressing sleeve on rank, and the inner hole of second pressing sleeve is less than the outer diameter of flange.
Preferably, the big needle offers the radial communication hole being connected to valve opening between small valve port and first step.
Preferably, silencing block is installed at the big valve port.
Preferably, the bore of the big valve port is in 10mm or more.
The technical solution adopted in the utility model, small needle are provided with from small needle bottom and are connected to valve chamber upwards positioned at big
The through flow hole of needle above section carries out pressure release by through flow hole when importing and exporting the increasing of side pressure difference, realizes that inlet and outlet side pressure is poor
Balance while guaranteeing driving moment, can be realized valve body structure miniaturization.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and detailed description：
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the assembly structure diagram of big needle component；
Fig. 3 is the decomposition texture schematic diagram of big needle component；
Fig. 4 is the structural schematic diagram of small needle.
Specific embodiment
The technical solution of the utility model embodiment is explained below with reference to the attached drawing of the utility model embodiment and
Illustrate, but following embodiments are only the preferred embodiment of the utility model, and not all.Based on the implementation example in the implementation mode,
Those skilled in the art's obtained other embodiments without making creative work, belong to the utility model
Protection scope.
As shown in Figures 1 to 4, a kind of two-period form electric expansion valve, including valve body 1, the valve body 1 are provided with valve chamber and company
The big valve port 11 of port valve chamber, first interface (import), second interface (outlet), the first adapter tube 12 of first interface connection, second connect
Mouth the second adapter tube 13 of connection, the valve chamber is interior to be equipped with the big needle component 2 for opening and closing big valve port 11, and the big needle component 2 includes
Big needle 21, the big needle 21 are equipped with valve opening 212 and are connected to the small valve port 211 of valve opening 212, and the valve opening 212 is connected with
Open and close the small needle 3 of small valve port 211.The small needle 3, which is provided with, to be connected to valve chamber from small 3 bottom of needle upwards and is located at big needle
The through flow hole 32 of 21 above sections.The utility model uses principle of stepping motor, and the every reception certain amount pulse of stepper motor is led to
Crossing helicitic texture drives the small realization of needle 3 to move up and down, and small needle 3 is moved to after certain position, and big needle 21 is driven to carry out
It moves up and down.Small needle 3 and big needle 21 are gradually opened, to realize the switching of different flow state between inlet and outlet, Ke Yishe
A pulse threshold is set, within the scope of pulse threshold, big needle 21 is failure to actuate, and screw rod drives small needle 3 to far from small valve port 211
Position spinning movement, small needle 3 carries out flow adjusting at this time, realizes the close adjusting of small-flow precise；Pulse value is more than pulse threshold
Afterwards, big needle 21 starts to act, and the flow exported at this time realizes big flow mainly from big valve port 11, big aperture.Due to small valve
Needle 3 is provided with from small needle bottom and is connected to the through flow hole 32 that valve chamber is located at big needle above section upwards, in inlet and outlet side pressure
When difference increases, pressure release is carried out by through flow hole 32, realizes inlet and outlet side pressure balance, while guaranteeing driving moment, Neng Goushi
Existing valve body structure miniaturization.
In the utility model, the driving part 4 of small needle is driven to include：Coil component, rotor, leads movable plate, spiral shell at casing
Mother, limit spring etc., specific structure and principle are identical as electric expansion valve driving part structure and principle in the prior art, herein
It repeats no more.
Wherein, the valve body 1 is equipped with guide sleeve 14 at valve chamber place suitable for reading, and the guide sleeve 14 is equipped with and leads with big needle 21
Path pilot hole 142 to the major diameter pilot hole 141 of cooperation and with the guiding cooperation of small needle 3.In the outer circle of the big needle 21
The first sealing ring 23 with the sealing cooperation of 141 inner wall of major diameter pilot hole is installed.Big needle 21 is in 23 frictional force of the first sealing ring
Under the influence of, it only moves up and down, does not rotate.It is equipped in the valve opening 212 and the sealing cooperation of small 3 outer circle of needle
Second sealing ring 24.The utility model also adds the first sealing ring 23 and the while through flow hole 32 are arranged on small needle 3
Two sealing rings 24 guarantee leakproofness, realize inlet and outlet side pressure release by through flow hole 32, to realize inlet and outlet side pressure balance.
Second sealing ring 24 in order to facilitate the installation of is equipped with first step above the valve opening 212, pacifies on the first step
Dress second sealing ring 24.The big needle 21 is offered between small valve port 211 and first step and is connected to valve opening 212
Radial communication hole 213.The valve opening 212 connects on the upside of first step is provided with second that bore is greater than first step
Rank installs the first pressing sleeve 25 that restricted second sealing ring 24 moves up on the second step.
With reference to shown in Fig. 1 and Fig. 4, the middle part of the small needle 3 is equipped with flange 31, and the suitable for reading of the valve opening 212 is equipped with the
Three steps, interference is pressed with the second pressing sleeve 26 on the third step.The inner hole of second pressing sleeve 26 is less than the outer of flange 31
Diameter controls the stroke that small needle 3 moves up and down so that flange 31 is limited in valve opening 212.Through flow hole 32 includes being located at flange
31 and under axial hole and the radial hole above flange 31.
In addition, being equipped with silencing block 22 at the big valve port 211.Valve opening noise can be reduced.
It will be appreciated by those skilled in the art that being big needle 21, the size of small needle 3 and big valve port 11, small valve port 211
Bore be designed by flow demand.In the utility model, the bore of big valve port 11 is designed in 10mm or more.In big valve port 11
Bore be less than 10mm even more hour, big about 21 pressure difference of needle is not obvious enough, from simplify structure consideration, can be not provided with leading to
Discharge orifice 32 and the first sealing ring 23 and the second sealing ring 24.The bore of big valve port 11 is designed in 10mm or more, can be played
The advantage of the utility model eliminates difference force to expansion valve on the basis of guaranteeing that the CV value after big 21 valve opening of needle requires
The influence of valve opening performance.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, being familiar with the those skilled in the art should be understood that the utility model includes but is not limited to attached drawing and specific embodiment party above
Content described in formula.The modification of any function and structure principle without departing from the utility model is intended to be included in claims
Range in.
Claims (10)
1. a kind of two-period form electric expansion valve, including valve body, the valve body be provided with valve chamber be connected to the big valve port of valve chamber, it is described
The big needle component for opening and closing big valve port is equipped in valve chamber, the big needle component includes big needle, and the big needle is equipped with valve opening
And the small valve port of connection valve opening, the valve opening are connected with the small needle for opening and closing small valve port, it is characterised in that：The small needle is set
It is equipped with from small needle bottom and is connected to the through flow hole that valve chamber is located at big needle above section upwards.
2. a kind of two-period form electric expansion valve according to claim 1, it is characterised in that：The valve body is at valve chamber place suitable for reading
Guide sleeve is installed, the guide sleeve is equipped with the major diameter pilot hole of big needle guiding cooperation and cooperates with small needle guiding small
Diameter pilot hole.
3. a kind of two-period form electric expansion valve according to claim 2, it is characterised in that：Pacify in the outer circle of the big needle
Equipped with the first sealing ring with the sealing cooperation of major diameter pilot hole inner wall.
4. a kind of two-period form electric expansion valve according to claim 3, it is characterised in that：Be equipped in the valve opening with it is small
Second sealing ring of needle outer circle sealing cooperation.
5. a kind of two-period form electric expansion valve according to claim 4, it is characterised in that：The valve opening is above small valve port
Equipped with first step, the second sealing ring is installed on the first step.
6. a kind of two-period form electric expansion valve according to claim 5, it is characterised in that：The valve opening is on first step
Side, which connects, is provided with the second step that bore is greater than first step, and it is upward to install restricted second sealing ring on the second step
The first mobile pressing sleeve.
7. a kind of two-period form electric expansion valve according to claim 6, it is characterised in that：The middle part of the small needle is equipped with
Flange, the suitable for reading of the valve opening are equipped with third step, and interference is pressed with the second pressing sleeve, second pressing sleeve on the third step
Inner hole be less than flange outer diameter.
8. a kind of two-period form electric expansion valve according to claim 5, it is characterised in that：The big needle small valve port with
The radial communication hole being connected to valve opening is offered between first step.
9. according to claim 1 to a kind of two-period form electric expansion valve described in 8 any one, it is characterised in that：The big valve
Silencing block is installed at mouthful.
10. according to claim 1 to a kind of two-period form electric expansion valve described in 8 any one, it is characterised in that：The big valve
The bore of mouth is in 10mm or more.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820244945.1U CN208153800U (en) | 2018-02-11 | 2018-02-11 | A kind of two-period form electric expansion valve |
| JP2020543052A JP7058744B2 (en) | 2018-02-11 | 2019-02-01 | Electronic expansion valve |
| PCT/CN2019/074514 WO2019154342A1 (en) | 2018-02-11 | 2019-02-01 | Electronic expansion valve |
| JP2022050845A JP7369815B2 (en) | 2018-02-11 | 2022-03-25 | electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820244945.1U CN208153800U (en) | 2018-02-11 | 2018-02-11 | A kind of two-period form electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208153800U true CN208153800U (en) | 2018-11-27 |
Family
ID=64382908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820244945.1U Active CN208153800U (en) | 2018-02-11 | 2018-02-11 | A kind of two-period form electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208153800U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019154342A1 (en) * | 2018-02-11 | 2019-08-15 | 浙江盾安机械有限公司 | Electronic expansion valve |
| CN113915339A (en) * | 2020-07-09 | 2022-01-11 | 株式会社鹭宫制作所 | Two-stage electric valve and refrigeration cycle system |
| WO2023143203A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2023143202A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
-
2018
- 2018-02-11 CN CN201820244945.1U patent/CN208153800U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019154342A1 (en) * | 2018-02-11 | 2019-08-15 | 浙江盾安机械有限公司 | Electronic expansion valve |
| CN113915339A (en) * | 2020-07-09 | 2022-01-11 | 株式会社鹭宫制作所 | Two-stage electric valve and refrigeration cycle system |
| CN113915339B (en) * | 2020-07-09 | 2024-04-02 | 株式会社鹭宫制作所 | Two-stage electric valve and refrigeration cycle system |
| WO2023143203A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2023143202A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
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