CN210318565U - Noise reduction throttle valve and throttle valve assembly - Google Patents
Noise reduction throttle valve and throttle valve assembly Download PDFInfo
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- CN210318565U CN210318565U CN201920869382.XU CN201920869382U CN210318565U CN 210318565 U CN210318565 U CN 210318565U CN 201920869382 U CN201920869382 U CN 201920869382U CN 210318565 U CN210318565 U CN 210318565U
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Abstract
The utility model relates to an air conditioner is choke valve technical field for the refrigeration, concretely relates to throttle valve and choke valve subassembly of making an uproar fall. The noise reduction throttle valve comprises a valve seat, a valve core and a retainer ring, wherein the valve core comprises a large-diameter section and a small-diameter section, and a connection step surface is arranged between the large-diameter section and the small-diameter section; the check ring is provided with a guide hole matched with the small-diameter section, one end of the check ring facing the valve core is provided with a leaning surface matched with the connection step surface, when the valve core is positioned at the limit position of one side of the valve core cavity far away from the valve hole, the free end of the small-diameter section extends out of the guide hole of the check ring, and the end surface of the free end of the small-diameter section is not lower than the end surface of one side of the check ring far away from the valve core. The noise reduction throttle valve with the structure effectively reduces impact noise generated by axial float, radial rotation and axial deviation of the valve core, and the valve core has lighter mass, shorter valve seat length and lower cost.
Description
Technical Field
The utility model relates to an air conditioner is choke valve technical field for the refrigeration, concretely relates to throttle valve and choke valve subassembly of making an uproar fall.
Background
After the air conditioner is shut down, the refrigerant flows from the high-pressure component to the low-pressure component due to the change of pressure. When the refrigerant flows through the throttle valve, the throttle valve is in an un-throttling state at the moment, the valve core is suspended in the valve seat, and the valve core can generate axial movement in the valve seat in the pressure balancing process.
In the prior art, one end of the valve core is in line contact with the port position of the valve seat, so that the valve core is prevented from being separated from the valve seat. This structural style of line contact leads to still radial rotation to take place when case axial float, and the striking can take place in the position of line contact when case axial float, and the same can produce the striking with the inner chamber of disk seat when case is rotatory simultaneously, and the striking of above-mentioned two kinds of forms all can produce great noise. In addition, because a certain gap is formed between the outer wall of the valve core and the inner cavity of the valve seat, the valve core and the valve seat are not always coaxial in the shifting process of the valve core, and the inclination of the valve core relative to the axis can also cause noise to be generated between the valve core and the inner cavity of the valve seat due to impact.
Except after the air conditioner is shut down, in the variable frequency air conditioner in the prior art, when the variable frequency air conditioner runs at a low frequency, because the pressure of a refrigerant in a system is lower, when the pressure of the refrigerant is basically equal to the weight of the valve core, the valve core can be suspended at any position in the valve seat, and in the pressure change and balance process, the valve core can generate axial movement, rotation and axial line inclination, and the three noises can be generated.
With the technical development of the silent air conditioner, the noise of the air conditioner needs to be further improved and raised. The present application will be directed to improvements in the construction of the throttle valve to further reduce noise.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to solve the great technical defect of choke valve noise in air conditioner field among the prior art.
In order to solve the technical problem, the utility model provides a technical scheme as follows: a noise reducing throttle valve comprising at least:
the valve comprises a valve seat, a valve hole and a valve core cavity which are communicated with each other are arranged in the valve seat, the inner diameter of the valve core cavity is larger than that of the valve hole, a transition conical surface is arranged between the valve core cavity and the valve hole, and at least one liquid flow channel which radially penetrates through the wall of the valve core cavity is arranged on the wall of the valve core cavity, close to the transition conical surface, along the circumferential direction;
the valve core is arranged in a valve core cavity of the valve seat, and one end of the valve core, which faces the valve hole, is provided with a cambered surface for contacting and sealing with the transition conical surface in a throttling state;
the valve core comprises a large-diameter section close to one side of the valve hole and a small-diameter section far away from one side of the valve hole, and a connection step surface is arranged between the large-diameter section and the small-diameter section;
the check ring is fixedly installed at one end, far away from the valve hole, of the valve core cavity, the check ring is provided with a guide hole matched with the small-diameter section, a leaning surface matched with the connection step surface is arranged at one end, facing the valve core, of the check ring, when the valve core is located at the limit position, far away from one side of the valve hole, of the valve core cavity, the free end of the small-diameter section extends out of the guide hole of the check ring, and the end face of the free end of the small-diameter section is not lower than the end face, far away from one side of the.
In a preferred embodiment, the small diameter section has a length of 1/5 to 2/5 of the total length of the valve spool.
In a preferred embodiment, the small diameter section has a length 1/3 which is the total length of the valve cartridge.
According to a preferred embodiment, a check ring installation cavity is formed in one end, far away from a valve hole, of a valve core cavity, a limiting step is arranged at the bottom of the check ring installation cavity, and a limiting surface matched with the limiting step is arranged at one end, facing the valve core, of the check ring.
In a preferred embodiment, the outer wall of the valve core close to one end of the valve hole is provided with an annular avoidance groove.
In a preferred embodiment, the surface of the abutting surface and/or the surface of the engaging step surface is a rough surface.
In a preferred embodiment, the abutment surface is a plane perpendicular to the axis of the retainer ring, and the engagement step surface is a plane perpendicular to the axis of the spool.
In a preferred embodiment, the engagement step surface is an external conical surface, and the abutment surface is an internal conical surface adapted to the external conical surface.
Compared with the prior art, the noise reduction throttle valve based on the structure has the following technical effects:
(1) when the valve core is in the extreme position of the non-throttling state, the connecting step surface of the valve core is contacted with the abutting surface of the retainer ring, compared with the linear contact of the end surface of the valve core and the valve seat in the prior art, the contact area is increased, the friction force is increased, the resistance of the rotation of the valve core is increased, the rotation speed of the valve core and the number of rotation turns in unit time are reduced, and therefore the noise generated by the impact of the rotation of the valve core and the valve body is reduced;
(2) in the axial movement process of the valve core, when the valve core moves to the limit position, because the connection step surface of the valve core is in surface contact with the abutting surface of the retainer ring, compared with the line contact in the prior art, the noise generated by the impact is more clumsy, the noise is less, and meanwhile, after the valve core reaches the limit position, because the contact area of the surface contact is larger, the valve core can be kept for a longer time in the state, the frequent axial movement of the valve core is prevented, and the impact noise generated by the axial movement of the valve core is reduced;
(3) in the prior art, the diameter of the outer wall of the valve core is basically consistent, the valve core in the embodiment comprises a large-diameter section and a small-diameter section, and in the process of converting the valve core from a throttling state to a non-throttling state, the small-diameter section of the valve core firstly enters the guide hole of the retaining ring;
(4) in the embodiment, the impact between the outer wall of the valve core and the inner wall of the valve core cavity mainly occurs between the large-diameter section and the valve core cavity, compared with the prior art, the area of the valve core in contact with the valve core cavity is obviously reduced, and the impact noise of the valve core is also smaller under the conditions of reduced contact area and reduced contact length;
(5) in the prior art, the diameter of the outer wall of the valve core is basically consistent, and the valve core cannot extend out of the valve seat, in this embodiment, the valve core comprises a large-diameter section and a small-diameter section, and the free end of the small-diameter section can extend out of the check ring or even the valve seat in a non-throttling state, so that the length of the valve seat can be smaller than that of the valve seat in the prior art, and the cost of the valve seat is inevitably reduced under the condition that the length of the valve seat is shortened;
(6) when the connecting step surface is an external conical surface and the abutting surface is an internal conical surface matched with the external conical surface, compared with a plane perpendicular to the axis, the matching area of the conical surfaces is larger, so that when the valve core axially moves to an extreme position for impact, the conical surfaces also have the function of dispersing impact force, so that the impact is more tedious, and the impact noise is less; meanwhile, the contact area of the conical surface is larger, the resistance of the valve core to rotation is larger, and the impact noise generated by the rotation of the valve core is further reduced;
(7) when at least one of the surfaces of the abutting surface and the engaging step surface is rough, the resistance to the rotation of the valve element is further increased, and the impact noise generated by the rotation of the valve element is further reduced.
Drawings
FIG. 1 is a schematic structural diagram of a noise reduction throttle valve in an unthrottled state according to a first embodiment;
FIG. 2 is a schematic structural diagram of a noise reduction throttle valve according to the first embodiment in a throttling state;
FIG. 3 is a schematic structural view illustrating an explosion state of the noise reduction throttle valve according to the first embodiment;
FIG. 4 is a schematic end view of a retainer ring;
FIG. 5 is a schematic structural view of a throttle valve assembly according to a second embodiment;
FIG. 6 is a schematic structural view of a noise reduction throttle valve according to a third embodiment in a non-throttle state;
FIG. 7 is a schematic structural view of a noise reduction throttle valve according to a third embodiment in a throttled state;
FIG. 8 is a schematic structural view showing an explosion state of the noise reduction throttle valve according to the third embodiment;
fig. 9 is a schematic structural view of a throttle valve assembly according to a fourth embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, an integral connection, or a detachable connection; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.
Example one
The noise reduction throttle valve of the present embodiment, as shown in fig. 1 to 3, includes a valve seat 10, a valve element 20, and a retainer 30. The valve seat 10 is provided with a valve hole 12 and a valve core chamber 11 for installing the valve core 20, which are communicated with each other, and the valve core 20 is axially movable in the valve core chamber 11.
The inner diameter of the valve core cavity 11 is larger than that of the valve hole 12, and a transition conical surface 13 is arranged between the valve core cavity 11 and the valve hole 12.
In this embodiment, two liquid flow channels 14 radially penetrating through the cavity wall of the spool cavity 11 are circumferentially arranged at the position of the cavity wall of the spool cavity 11 close to the transition conical surface 13. Of course, the number of the flow channels 14 may be one, or may be more than two, and preferably two.
In this embodiment, a check ring installation cavity 15 is arranged at one end of the valve core cavity 11, which is far away from the valve hole 12, and a limiting step 16 is arranged at the bottom of the check ring installation cavity 15. Wherein, the retainer ring 30 is installed in the retainer ring installation cavity 15, and one end of the retainer ring 30 facing the valve core 20 is provided with a limit surface 33 matched with the limit step 16. When the valve seat is installed, after the limiting surface 33 is abutted against the limiting step 16, the retainer ring and the valve seat can be fixed through welding; the mode shown in fig. 1-2 can also be adopted, the port of the valve seat is processed by necking, and the retainer ring is riveted in the retainer ring installation cavity 15.
The valve body 20 of the present embodiment, as shown in fig. 1 to 3, includes a large diameter section 21 on a side close to the valve hole and a small diameter section 22 on a side away from the valve hole, and an engagement step surface 23 is provided between the large diameter section and the small diameter section. One end of the valve core 20 facing the valve hole 12 is provided with a cambered surface 25 for contacting and sealing with the transition conical surface 13 in a throttling state. Preferably, an annular avoiding groove 24 is formed in the outer wall of the large-diameter section of the valve core 20 close to one end of the valve hole, so that the cambered surface 25 and the transition conical surface 13 can be completely in contact sealing. In the state that the cambered surface 25 and the transition conical surface 13 can be completely contacted and sealed, namely the throttling state shown in fig. 2, due to the pressure of the refrigerant, the valve core is tightly attached to the valve seat, the valve core cannot shake, and no noise is generated.
In this embodiment, the retainer ring 30 is provided with a guide hole 31 adapted to the small-diameter section 22, and an abutting surface 32 adapted to the engaging step surface 23 is provided at an end facing the valve core 20. And when the valve core is positioned at the limit position of one side of the valve core cavity far away from the valve hole, the free end of the small-diameter section extends out of the guide hole of the retainer ring, and the end face of the free end of the small-diameter section is not lower than the end face of one side of the retainer ring far away from the valve core. Therefore, the length of the valve seat can be reduced, and the production cost is saved under the condition of meeting the use requirement.
In this embodiment, the abutting surface 32 is a plane perpendicular to the axis of the retainer ring, and the engaging step surface 23 is a plane perpendicular to the axis of the spool.
Preferably, the abutting surface 32 and the limiting surface 33 are the same plane in this embodiment.
Preferably, in the present embodiment, as shown in fig. 4, the surface of the abutting surface 32 is a rough surface, for example, a surface processed by knurling, which can significantly increase the friction between the abutting surface 32 and the engaging step surface 23. Of course, the surface of the engaging step surface 23 may be provided as a rough surface, or both surfaces may be provided as rough surfaces.
Wherein the length of the small diameter section of the valve core usually occupies 1/5 to 2/5 of the total length of the valve core. In this embodiment, the small diameter section of the valve spool preferably has a length 1/3 which is the total length of the valve spool. Within a suitable length range, cost, life and performance are all within a more balanced range.
In addition, the valve core comprises a large-diameter section and a small-diameter section, so that the valve core is light in weight, the center of gravity of the valve core is shifted towards one end of the large-diameter section, the shifting of the center of gravity can reduce the swinging of the valve core, and certain contribution is made to the noise reduction of the throttle valve.
The retainer ring in the embodiment is usually made of stainless steel or copper, is made of the conventional material, and is beneficial to cost reduction and mass production.
Example two
As shown in fig. 5, the throttle valve assembly of the present embodiment includes a valve tube 40, a valve seat installation cavity 41 is disposed in the valve tube 40, the noise reduction throttle valve of the first embodiment is disposed in the valve seat installation cavity 41, and a filter screen 42 is disposed at both ends of the throttle valve in the valve tube of the present embodiment.
Preferably, the screen 42 in this embodiment is made of stainless steel, and has a mesh size of 50 to 150 meshes.
It should be noted that, the present embodiment is a specific application of the noise reduction throttle valve of the first embodiment, the throttle valve assembly of the present embodiment can be directly applied to an air conditioner, and both ends of the throttle valve assembly are connected to a refrigerant pipeline of the air conditioner. The throttle valve component with the structure also has the mute technical advantage of the noise reduction throttle valve in the first embodiment, so that the air conditioner mute effect of the throttle valve component is better.
EXAMPLE III
As shown in fig. 6 to 8, the noise reduction throttle valve of the present embodiment is mainly different from the first embodiment in that the engagement step surface of the valve core 20 is an external tapered surface 23 ', and the abutment surface of the retainer ring 30 is an internal tapered surface 32 ' adapted to the external tapered surface 23 '. In the adapted condition, the taper of the outer tapered surface 23 'is the same as the taper of the inner tapered surface 32'.
The connecting step surface and the abutting surface are arranged into an outer conical surface 23 'and an inner conical surface 32' which are mutually matched, compared with the first embodiment, the matching area of the conical surfaces is larger, the matching length is longer, and therefore when the valve core axially moves to the limit position for collision, the conical surfaces also have the function of dispersing collision force, so that the collision is more tedious, and the collision noise is less; meanwhile, the contact area of the conical surface is larger, the resistance of the valve core to rotation is larger, and the impact noise generated by the rotation of the valve core is further reduced.
Example four
As shown in fig. 9, the throttle valve assembly of the present embodiment has the same structure as that of the second embodiment, except that the noise reduction throttle valve used in the third embodiment has a better noise reduction effect, and accordingly, the air conditioner with the throttle valve assembly has a better mute effect.
In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (10)
1. A noise reducing throttle valve comprising at least:
the valve comprises a valve seat (10), wherein a valve hole (12) and a valve core cavity (11) which are communicated with each other are arranged in the valve seat, the inner diameter of the valve core cavity is larger than that of the valve hole, a transition conical surface (13) is arranged between the valve core cavity and the valve hole, and at least one liquid flow channel (14) which radially penetrates through the wall of the valve core cavity is arranged on the wall of the valve core cavity, close to the transition conical surface, along the circumferential direction;
the valve core (20) is arranged in a valve core cavity of the valve seat, and one end of the valve core, facing the valve hole, is provided with a cambered surface (25) for contacting and sealing with the transition conical surface in a throttling state;
the valve core is characterized by comprising a large-diameter section (21) close to one side of the valve hole and a small-diameter section (22) far away from one side of the valve hole, wherein a connection step surface (23) is arranged between the large-diameter section and the small-diameter section;
the valve core cavity sealing structure is characterized by further comprising a check ring (30), the check ring is fixedly installed at one end, far away from the valve hole, of the valve core cavity, the check ring is provided with a guide hole (31) matched with the small-diameter section, a leaning surface (32) matched with the connection step surface is arranged at one end, facing the valve core, of the check ring, when the valve core is located at the limit position, far away from one side of the valve hole, of the valve core cavity, the free end of the small-diameter section extends out of the guide hole of the check ring, and the end face of the free end of the small-.
2. The noise reducing throttle valve of claim 1 wherein the small diameter section has a length of 1/5 to 2/5 of the total length of the spool.
3. The noise reducing throttle valve of claim 2 wherein the small diameter section has a length of 1/3 times the total length of the spool.
4. The noise reduction and throttling valve according to claim 1, characterized in that a retainer ring mounting cavity (15) is arranged at one end of the valve core cavity far away from the valve hole, a limiting step (16) is arranged at the bottom of the retainer ring mounting cavity, and a limiting surface (33) matched with the limiting step is arranged at one end of the retainer ring facing the valve core.
5. The noise reducing throttle valve according to claim 1, wherein the outer wall of the valve core near one end of the valve hole is provided with an annular escape groove (24).
6. The noise reducing and throttling valve of claim 1, wherein the surfaces of the abutment surfaces and/or the engaging step surfaces are roughened surfaces.
7. A noise reducing throttle valve according to any of claims 1-6 characterized in that the abutment surface is a plane perpendicular to the retainer axis and the abutment step surface is a plane perpendicular to the spool axis.
8. Noise reducing throttle valve according to any of claims 1-6, characterized in that said abutment step surface is an external conical surface (23 ') and said abutment surface is an internal conical surface (32') adapted to said external conical surface.
9. A throttle valve assembly, characterized by at least comprising a valve tube (40), a valve seat installation cavity (41) is arranged in the valve tube, the noise reduction throttle valve of any one of claims 1-8 is arranged in the valve seat installation cavity, and a filter screen is arranged in the valve tube at both ends of the throttle valve.
10. The throttle valve assembly of claim 9, wherein the screen has a mesh size of 50 to 150 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920869382.XU CN210318565U (en) | 2019-06-11 | 2019-06-11 | Noise reduction throttle valve and throttle valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920869382.XU CN210318565U (en) | 2019-06-11 | 2019-06-11 | Noise reduction throttle valve and throttle valve assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318565U true CN210318565U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920869382.XU Active CN210318565U (en) | 2019-06-11 | 2019-06-11 | Noise reduction throttle valve and throttle valve assembly |
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| CN (1) | CN210318565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454581A (en) * | 2019-06-11 | 2019-11-15 | 新昌县丰亿电器有限公司 | A kind of noise reduction throttle valve and throttle valve component |
-
2019
- 2019-06-11 CN CN201920869382.XU patent/CN210318565U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454581A (en) * | 2019-06-11 | 2019-11-15 | 新昌县丰亿电器有限公司 | A kind of noise reduction throttle valve and throttle valve component |
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