CN110822106B - Transmission device for refrigeration valve and refrigeration valve - Google Patents
Transmission device for refrigeration valve and refrigeration valve Download PDFInfo
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- CN110822106B CN110822106B CN201810902052.6A CN201810902052A CN110822106B CN 110822106 B CN110822106 B CN 110822106B CN 201810902052 A CN201810902052 A CN 201810902052A CN 110822106 B CN110822106 B CN 110822106B
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- valve
- needle
- input shaft
- central axis
- transmission
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/24—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with valve members that, on opening of the valve, are initially lifted from the seat and next are turned around an axis parallel to the seat
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to a transmission for a refrigeration valve, comprising: an input shaft rotatable about a central axis thereof; a ball connected to the input shaft in a manner restricting rotation in a circumferential direction; a valve needle arranged on the central axis and movable up and down along the central axis; and a conversion mechanism provided between the input shaft and the valve needle and configured to convert a rotational movement of the input shaft into a movement of the valve needle in the central axis direction; when the input shaft rotates for one circle, the valve needle is driven by the conversion mechanism to move back and forth along the direction of the central axis at least twice. The invention also provides a refrigeration valve provided with the transmission device. The transmission device can realize quick axial movement of the valve needle under the condition that the valve ball rotates at a slow speed.
Description
Technical Field
The invention relates to a transmission device for a refrigeration valve and a refrigeration valve provided with the transmission device.
Background
The refrigerating valve is an important component in a refrigerating system, and can be set as a flow distribution valve with stopping and expanding functions. The expansion function is to make the medium-temperature high-pressure liquid refrigerant become low-temperature low-pressure wet steam through the throttling, and then the refrigerant absorbs heat in the evaporator to achieve the refrigeration effect. The stopping function is to perform the opening function in the refrigerating system pipeline, and the opening size can control the flow quantity and the flowing direction of the refrigerant. The refrigerant valve generally includes a valve needle (valve cartridge) and a valve ball, which are respectively controlled by respective driving devices to regulate the inflow and outflow of refrigerant. However, the two separate drives make the internal structure of the refrigerating valve very complicated and indirectly increase the losses of the refrigerating valve.
Thus, a need exists for a new refrigeration valve having an independent drive.
Disclosure of Invention
In view of the above, according to a first aspect of the present invention, there is provided a transmission for a refrigeration valve, which effectively solves the above and other problems of the prior art. In the transmission according to the present invention, the transmission includes:
an input shaft rotatable about a central axis thereof;
a ball connected to the input shaft in a manner restricting rotation in a circumferential direction;
a valve needle arranged on the central axis and movable up and down along the central axis; and
a conversion mechanism that is provided between the input shaft and the valve needle and that is provided to convert a rotational movement of the input shaft into a movement of the valve needle in the central axis direction;
when the input shaft rotates for one circle, the valve needle is driven by the conversion mechanism to move back and forth at least twice along the direction of the central axis.
In an advantageous embodiment of the transmission according to the invention, the conversion mechanism comprises:
a driver connected to the input shaft in a manner of restricting rotation in a circumferential direction, and on which the needle is provided; and
a guide portion fixed to a housing of the refrigeration valve,
the driver and the guide part can rotate relatively, and the driver can drive the valve needle to move back and forth along the central axis while rotating.
In a further advantageous embodiment of the transmission according to the invention, a pin is provided on the driver, and the guide is arranged outside the driver and is provided with a groove for guiding the pin in the circumferential direction,
wherein the groove has a shape of at least two peaks and valleys,
the valve needle is movable back and forth at least twice in the direction of the centre axis when the pin is moved along the groove.
In a further advantageous embodiment of the transmission according to the invention, the conversion mechanism comprises:
a pushing part fixed at the valve ball;
a driving member mounted on a housing of the refrigerant valve in such a manner as to be movable in an axial direction and to restrict circumferential rotation, one end of the driving member abutting against the pushing portion, and the other opposite end thereof being provided with the needle; and
the elastic piece is elastically pre-deformed and installed between the shell of the refrigeration valve and the driving piece, so that elastic force for driving the driving piece to move towards the direction of the pushing portion is applied, wherein the driving piece and the pushing portion can rotate relatively, and the driving piece can move back and forth along the central axis while the pushing portion rotates.
In a further advantageous embodiment of the transmission according to the invention, a contour configured in the shape of at least two wave crests and wave troughs is provided on the region where the driver and the push portion are in contact.
In a further advantageous embodiment of the transmission according to the invention, the drive element is connected to the valve needle by means of a spring element.
In a further advantageous embodiment of the transmission according to the invention, the driver is connected to the valve needle by means of a resilient element.
In a further advantageous embodiment of the transmission according to the invention, a projection for preventing a relative rotation of the drive member with respect to the housing of the refrigeration valve is provided on the surface of the drive member.
In a further advantageous embodiment of the transmission according to the invention, the push portion is formed integrally with the valve ball.
Further, according to a second aspect of the present invention, there is also provided a refrigeration valve. The refrigeration valve is provided with the transmission device, and comprises a first valve and a second valve, wherein the first valve comprises the valve needle, and the second valve comprises the valve ball.
The transmission device for the refrigeration valve not only can realize the quick movement of the valve needle in the axial direction while the valve ball rotates slowly, but also has the advantages of reducing abrasion, occupying space and the like.
Drawings
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and detailed description, wherein:
FIG. 1 is a schematic structural view of a first embodiment of the transmission for a refrigeration valve of the present invention;
FIG. 2 is an enlarged partial schematic view of a shift mechanism of the transmission for the refrigeration valve of FIG. 1;
FIG. 3 is a schematic construction of a second embodiment of the transmission for a refrigeration valve of the present invention; and
fig. 4 is a partially enlarged schematic view of a conversion mechanism of the transmission for the refrigerating valve in fig. 3.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings. First, it should be noted that the directional terms such as upper, lower, left, right, front, rear, inner, outer, top, bottom, etc., which are mentioned or may be mentioned in the present specification, are defined with respect to the configurations shown in the respective drawings, and they are relative concepts, and thus may be changed according to the positions and the use states thereof. Therefore, these and other directional terms should not be construed as limiting terms.
One embodiment of the transmission for a refrigeration valve of the present invention is shown in fig. 1. Such a refrigeration valve may be a flow distributing valve with shut-off and expansion functions. As shown in fig. 1, the transmission device is composed of an input shaft 11, a valve ball 12, a valve needle 13, a conversion mechanism and the like. The input shaft 11 is connected to a motor output shaft and is rotatable about its central axis, and the valve ball 12 is connected to the input shaft 11 in such a manner as to restrict the circumferential rotation, in other words, the valve ball 12 and the input shaft 11 cannot rotate with each other, both can rotate only in synchronism, and both can move with each other in the axial direction. It is noted that the input shaft 11 may be driven by a motor output shaft or may be rotated by manual operation by an operator. The valve needle 13 is arranged on the centre axis and can move up and down along the centre axis. The conversion mechanism is provided between the input shaft 11 and the needle 13, and is designed to convert a rotational movement of the input shaft 11 into a movement of the needle 13 in the center axis direction. When the input shaft 11 or the valve ball 12 rotates once, the valve needle 13 is arranged to be able to move back and forth at least twice in the direction of the center axis.
It should be noted that the function of the refrigeration valve mentioned in the present invention is to distribute the refrigerant flow and the expansion degree of the two paths, and the adjustment is respectively adjusted by the combination of the opening degrees of the valve needle and the valve ball. In practical applications, one path of refrigerant needs a gentle opening adjustment, and the other path needs a very rapid opening adjustment, so that the ball valve is responsible for the gentle opening adjustment, and the valve needle is responsible for the rapid opening adjustment. By the combined adjusting mode, the influence on the change of the opening degree of one path can be minimized when one path is adjusted greatly. And when the valve ball is required to be adjusted to a stage with a larger opening range, the valve ball has the same adjusting range as the front section.
In the specific embodiment of the transmission for a refrigeration valve as shown in fig. 1-2, the conversion mechanism comprises an actuator 14 and a guide 15, wherein the actuator 14 is connected to the input shaft 11 in a manner such that it is restricted from rotating in the circumferential direction and the valve needle 13 is arranged on the actuator. In addition, the guide part 15 may be arranged outside the actuator 14 and fixed to a housing (not shown) of the refrigeration valve, wherein the actuator 14 and the guide part 15 are rotatable relative to each other, and the actuator 14 can drive the valve needle 13 to move back and forth along the central axis while rotating. Further, as can be clearly seen in fig. 2, the driver 14 is provided with a pin 16 and the guide portion 15 is provided with a groove 17 for guiding the pin 16 in the circumferential direction, wherein the groove 17 has the shape of at least two peaks and valleys, so that the valve needle 13 can be moved back and forth at least twice in the direction of the centre axis when the input shaft 11 is rotated one revolution when the pin 16 is moved along the groove 17.
It will be appreciated by a person skilled in the art that in practice to avoid hard contact of the valve needle 13 with the actuator 14, the actuator 14 may preferably be connected to the valve needle 13 by a resilient element, such as a spring.
In other preferred embodiments combined with the above embodiments, as shown in fig. 3, the conversion mechanism in the transmission for the refrigeration valve may further include a driving member 24, a pushing portion 25, and a resilient member 26. In this embodiment, reference may be made to the above embodiments for connection relationship between the input shaft 21 and the valve ball 22, which is not described herein again. The pushing portion 25 is fixed at the valve ball 22, preferably integrally formed with the valve ball 22. The driver 24 is mounted on the housing of the refrigeration valve in an axially movable but circumferentially limited manner (in other words, the driver 24 is not rotatable relative to the housing of the refrigeration valve), one end of which abuts against the push portion 25 and the opposite end of which is provided with the needle 23. The resilient member 26 is elastically pre-deformed between the housing of the refrigeration valve and the driving member 24, thereby applying an elastic force that urges the driving member 24 in the direction of the pushing portion 25. The driving element 24 and the pushing element 25 can rotate relatively, and the driving element 24 can move back and forth along the central axis while the pushing element 25 rotates. Further, a profile configured in the shape of at least two peaks and valleys is provided on a portion where the driving member 24 and the pushing portion 25 contact.
It will be appreciated by those skilled in the art that in practice to avoid hard contact of the valve needle 23 with the actuating member 24, the actuating member may preferably be connected to the valve needle by a resilient element, such as a spring.
With continued reference to fig. 4, two protrusions 27 are disposed on the surface of the driving member 24 for preventing the driving member from rotating relative to the housing of the refrigeration valve. A person skilled in the art may provide a plurality of protrusions 27, for example three, four, five or more, on the surface of the driving member. In addition, the bump 27 may be set to have different sizes according to actual conditions. It should also be noted that the actual positions of these projections 27 can also be designed flexibly in different situations.
Furthermore, the invention also proposes a refrigeration valve and the refrigeration valve is provided with the above-mentioned transmission device, the refrigeration valve comprises a first valve and a second valve, wherein the first valve comprises the valve needle and the second valve comprises the valve ball.
In summary, in view of the fact that the transmission device for the refrigeration valve can ensure that the valve ball can complete the movement of the valve needle in the axial direction while rotating, and the transmission device can effectively reduce the abrasion, the use of the transmission device in the refrigeration valve can not only save the inner space of the refrigeration valve, but also improve the whole service life of the refrigeration valve.
The above describes several embodiments of the present invention in detail to explain the transmission for a refrigeration valve and a refrigeration valve equipped with the same, and these examples are provided only for illustrating the principle of the present invention and its embodiments, not for limiting the present invention, and those skilled in the art can make various modifications and improvements without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to be included within the scope of this invention and defined in the claims which follow.
Claims (10)
1. A transmission for a refrigeration valve, the transmission comprising:
an input shaft rotatable about a central axis thereof;
a ball connected to the input shaft in a manner restricting rotation in the circumferential direction;
a valve needle arranged on the central axis and movable up and down along the central axis; and
a conversion mechanism that is provided between the input shaft and the needle, and that is provided to convert a rotational movement of the input shaft into a movement of the needle in the central axis direction;
when the input shaft rotates for one circle, the valve needle is driven by the conversion mechanism to move back and forth at least twice along the direction of the central axis.
2. The transmission of claim 1, wherein the conversion mechanism comprises:
a driver connected to the input shaft in a manner of restricting rotation in a circumferential direction, and on which the needle is provided; and
a guide portion fixed to a housing of the refrigeration valve,
the driver and the guide part can rotate relatively, and the driver can drive the valve needle to move back and forth along the central axis while rotating.
3. Transmission according to claim 2, characterized in that a pin is provided on the driver and that the guide is arranged outside the driver and is provided with a groove for a guide pin in the circumferential direction,
wherein the groove has a shape of at least two peaks and valleys,
the valve needle is movable back and forth at least twice in the direction of the centre axis when the pin is moved along the groove.
4. The transmission of claim 1, wherein the conversion mechanism comprises:
a pushing part fixed at the valve ball;
a driving member mounted on a housing of the refrigerant valve in such a manner as to be movable in an axial direction and to restrict circumferential rotation, one end of the driving member abutting against the pushing portion, and the opposite end thereof being provided with the needle; and
a resilient member elastically pre-deformed installed between a housing of the refrigerant valve and the driving member to apply an elastic force urging the driving member to move in a direction of the push portion,
the driving piece and the pushing portion can rotate relatively, and the driving piece can move back and forth along the central axis while the pushing portion rotates.
5. Transmission according to claim 4, characterized in that a profile configured in the shape of at least two peaks and valleys is provided on the location where the driving element and the pushing part are in contact.
6. Transmission according to claim 4 or 5, characterized in that the drive member is connected to the valve needle by means of a resilient element.
7. Transmission according to claim 2 or 3, characterized in that the driver is connected to the valve needle by means of a resilient element.
8. Transmission according to claim 4 or 5, wherein a projection is provided on a surface of the driving member for preventing a relative rotation of the driving member with respect to the housing of the refrigeration valve.
9. The transmission of claim 4 or 5, wherein the push portion is integrally formed with the valve ball.
10. A refrigeration valve, characterized in that it is equipped with a transmission according to any of claims 1-9, comprising a first valve and a second valve, wherein the first valve comprises the valve needle and the second valve comprises the valve ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810902052.6A CN110822106B (en) | 2018-08-09 | 2018-08-09 | Transmission device for refrigeration valve and refrigeration valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810902052.6A CN110822106B (en) | 2018-08-09 | 2018-08-09 | Transmission device for refrigeration valve and refrigeration valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110822106A CN110822106A (en) | 2020-02-21 |
| CN110822106B true CN110822106B (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810902052.6A Active CN110822106B (en) | 2018-08-09 | 2018-08-09 | Transmission device for refrigeration valve and refrigeration valve |
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| Country | Link |
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| CN (1) | CN110822106B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1003336A (en) * | 1963-02-25 | 1965-09-02 | Perry Fay Company | Fluid control valve mechanism |
| DE4026721A1 (en) * | 1990-08-24 | 1992-02-27 | Bosch Gmbh Robert | INJECTION VALVE AND METHOD FOR PRODUCING AN INJECTION VALVE |
| US5397100A (en) * | 1993-10-15 | 1995-03-14 | Mueller Industries, Inc. | Flow refrigeration valve |
| CN102032381A (en) * | 2009-09-27 | 2011-04-27 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN102165176A (en) * | 2008-09-23 | 2011-08-24 | 罗伯特·博世有限公司 | Injector for injecting high-pressure fuel into the combustion chamber of an internal combustion engine |
| CN102734476A (en) * | 2011-04-02 | 2012-10-17 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN106414192A (en) * | 2014-06-26 | 2017-02-15 | 罗伯特·博世有限公司 | Discharge valve comprising a receiving element |
| CN106594319A (en) * | 2015-10-20 | 2017-04-26 | 博世热力技术（山东）有限公司 | Four-way valve with improved pilot valve |
| CN106837646A (en) * | 2015-11-13 | 2017-06-13 | 罗伯特·博世有限公司 | Valve for dosage fluid and the device with such valve |
| CN106930881A (en) * | 2015-12-21 | 2017-07-07 | 罗伯特·博世有限公司 | Valve for measuring fluid |
-
2018
- 2018-08-09 CN CN201810902052.6A patent/CN110822106B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1003336A (en) * | 1963-02-25 | 1965-09-02 | Perry Fay Company | Fluid control valve mechanism |
| DE4026721A1 (en) * | 1990-08-24 | 1992-02-27 | Bosch Gmbh Robert | INJECTION VALVE AND METHOD FOR PRODUCING AN INJECTION VALVE |
| US5397100A (en) * | 1993-10-15 | 1995-03-14 | Mueller Industries, Inc. | Flow refrigeration valve |
| CN102165176A (en) * | 2008-09-23 | 2011-08-24 | 罗伯特·博世有限公司 | Injector for injecting high-pressure fuel into the combustion chamber of an internal combustion engine |
| CN102032381A (en) * | 2009-09-27 | 2011-04-27 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN102734476A (en) * | 2011-04-02 | 2012-10-17 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN106414192A (en) * | 2014-06-26 | 2017-02-15 | 罗伯特·博世有限公司 | Discharge valve comprising a receiving element |
| CN106594319A (en) * | 2015-10-20 | 2017-04-26 | 博世热力技术（山东）有限公司 | Four-way valve with improved pilot valve |
| CN106837646A (en) * | 2015-11-13 | 2017-06-13 | 罗伯特·博世有限公司 | Valve for dosage fluid and the device with such valve |
| CN106930881A (en) * | 2015-12-21 | 2017-07-07 | 罗伯特·博世有限公司 | Valve for measuring fluid |
Non-Patent Citations (1)
| Title |
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| 新型双向热力膨胀阀与变频空调器实用状态下的节能分析;叶兴海等;《制冷与空调》;20120628;第第12卷卷(第03期);第95-102页 * |
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| Publication number | Publication date |
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| CN110822106A (en) | 2020-02-21 |
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