CN221097687U - Silencing component and electronic expansion valve with same - Google Patents

Abstract

The utility model provides a silencing assembly and an electronic expansion valve with the same. By the technical scheme provided by the utility model, the problems that after the fluid in the valve cavity passes through the valve port, the flow speed of the fluid is increased and the noise is relatively high after the fluid changes into a gas-liquid two-phase state in the prior art can be solved.

Description

Silencing component and electronic expansion valve with same

Technical Field

The utility model relates to the technical field of electronic expansion valves, in particular to a silencing assembly and an electronic expansion valve with the same.

Background

An existing electronic expansion valve comprises a valve cavity and a valve port which are communicated with each other. After the fluid in the valve cavity passes through the valve port, the flow speed of the fluid is increased, and the condition that the fluid is changed from a liquid state to a gas-liquid two-phase state possibly occurs, so that the noise of the electronic expansion valve is relatively large.

Disclosure of utility model

The utility model provides a silencing assembly and an electronic expansion valve with the same, and aims to solve the problems that after fluid in a valve cavity in the prior art passes through a valve port, the flow speed of the fluid is increased, and noise is relatively high after the fluid changes into a gas-liquid two-phase state.

According to one aspect of the present utility model, there is provided a muffler assembly having a filtering portion and a buffering portion sequentially disposed along an axial direction, the filtering portion being configured to filter bubbles in a gas-liquid two-phase fluid, the buffering portion being located downstream of the filtering portion, the buffering portion having a liquid inlet, a buffering chamber and a choke sequentially communicating, the liquid inlet being disposed at one end of the buffering portion near the filtering portion, the choke being disposed on a side wall of the buffering portion.

Further, the filtering part is provided with a first area and a second area, and the second area is arranged outside the first area in a circumferential ring shape; the first area is provided with through holes, the second area is a filtering area, and the filtering area is used for filtering bubbles.

Further, the through hole is provided coaxially with the filter portion.

Further, the sectional area of the buffer chamber gradually decreases in the direction from the filter portion to the buffer portion.

Further, the end face of the end, far away from the filtering part, of the buffer cavity is an arc-shaped face.

Further, the buffer portion is provided with a plurality of chokes, and the chokes are distributed at intervals along the circumferential direction of the buffer cavity.

Further, the projection of the through hole in the axial direction on the buffer portion does not coincide with any throttle.

Further, the buffer portion comprises a cylindrical pipe section and a conical pipe section which are sequentially communicated along the axis direction, the cylindrical pipe section is close to the filtering portion, one end, far away from the cylindrical pipe section, of the conical pipe section is closed, and the throttling port is arranged on the side wall of the conical pipe section.

According to another aspect of the present utility model, there is provided an electronic expansion valve comprising a valve body having a valve port and the above-described muffler assembly disposed downstream of the valve port, a filter portion of the muffler assembly disposed adjacent the valve port.

Further, the valve body is provided with a valve port, a flaring section and a connecting section which are sequentially communicated, a filtering part of the silencing assembly is positioned in the connecting section, the outer side wall of a buffering part of the silencing assembly is welded with the inner wall of the connecting section, one end, far away from the buffering part, of the filtering part is abutted with the flaring section, and the other end of the filtering part is abutted with the buffering part.

By applying the technical scheme of the utility model, the filtering part and the buffer part are sequentially arranged, so that the noise reduction effect on the fluid can be improved. Especially when liquid phase fluid passes through the first large-section channel, the small-section channel and the second large-section channel in sequence, the liquid phase fluid throttles and expands after passing through the small-section channel, the flow speed of the liquid phase fluid can be increased, bubbles can be generated in the second large-section channel, bubbles are continuously generated in the installation process, the sizes of the bubbles are inconsistent in the installation process, continuous sound appears, and noise is generated. When noise reduction is needed, the noise reduction component can be arranged at one end of the second large-section channel, which is close to the small-section channel, fluid flowing out of the small-section channel sequentially passes through the filtering part and the buffer part, and the filtering part filters out large bubbles in the fluid first, so that the consistency of the sizes of the bubbles is improved, and the noise of the fluid is reduced; and then, the filtered fluid flows into the buffer part, the buffer cavity buffers the fluid, the flow speed of the fluid is reduced, the buffered fluid flows out of the noise reduction part through the throttling port, and the noise generated by the fluid is further reduced. The setting of this scheme falls the noise through filtering bubble, buffering, three aspect jointly to the fluid, has promoted the noise reduction effect to the fluid.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic structural view of a muffler assembly provided by the present utility model;

FIG. 2 illustrates a cross-sectional view of a muffler assembly provided by the present utility model;

FIG. 3 shows a schematic diagram of the structure of the filtering part provided by the utility model;

FIG. 4 shows a front view of a filter portion provided by the present utility model;

FIG. 5 shows a top view of a filter element provided by the present utility model;

FIG. 6 shows a cross-sectional view of a filter portion provided by the present utility model;

FIG. 7 shows a cross-sectional view of a cushioning portion provided by the present utility model;

FIG. 8 shows a top view of a cushioning portion provided by the present utility model;

FIG. 9 illustrates a bottom view of a cushioning portion provided by the present utility model;

Fig. 10 is a schematic structural view of another buffer portion according to an embodiment of the present disclosure;

Fig. 11 shows a cross-sectional view of the buffer part 20 shown in fig. 10;

Fig. 12 shows a schematic structural diagram of an electronic expansion valve provided by the utility model;

fig. 13 shows a partial structure diagram at a in fig. 12.

Wherein the above figures include the following reference numerals:

10. A filtering part; 101. a through hole; 102. a second region;

20. A buffer section;

201. a liquid inlet; 202. a buffer chamber; 203. a choke;

21. a cylindrical tube section; 22. a conical tube section;

30. a valve body;

301. A valve port; 302. a flaring section; 303. and a connecting section.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 11, the embodiment of the present utility model provides a muffler assembly, which has a filtering portion 10 and a buffering portion 20 sequentially arranged along an axial direction, the filtering portion 10 is used for filtering bubbles in a gas-liquid two-phase fluid, the buffering portion 20 is located at a downstream of the filtering portion 10, the buffering portion 20 has a liquid inlet 201, a buffering cavity 202 and a choke 203 sequentially communicated, the liquid inlet 201 is disposed at one end of the buffering portion 20 close to the filtering portion 10, and the choke 203 is disposed on a side wall of the buffering portion 20.

By applying the technical scheme of the utility model, the filtering part 10 and the buffer part 20 are sequentially arranged, so that the noise reduction effect on the fluid can be improved. Especially when liquid phase fluid passes through the first large-section channel, the small-section channel and the second large-section channel in sequence, the liquid phase fluid throttles and expands after passing through the small-section channel, the flow speed of the liquid phase fluid can be increased, bubbles can be generated in the second large-section channel, the bubbles are continuously generated in the installation process, the sizes of the bubbles are inconsistent in the cracking process, discontinuous sounds appear, and noise is generated. When noise reduction is needed, the noise reduction component of the scheme can be arranged at one end of the second large-section channel, which is close to the small-section channel, fluid flowing out of the small-section channel sequentially passes through the filtering part 10 and the buffer part 20, and the filtering part 10 filters out large bubbles in the fluid at first, so that the uniformity of the sizes of the bubbles is improved, and the noise of the fluid is reduced; after that, the filtered fluid flows into the buffer portion 20, the buffer cavity 202 buffers the fluid, the flow speed of the fluid is reduced, and the buffered fluid flows out of the noise reduction portion through the orifice 203, so that noise generated by the fluid is further reduced. The setting of this scheme falls the noise through filtering bubble, buffering, three aspect jointly to the fluid, has promoted the noise reduction effect to the fluid. In addition, the arrangement of the scheme is simple in structure and wide in applicable range.

In actual working conditions, when fluid passes through the small-section channel, the throttling expansion is carried out, when the fluid flows out of the small-section channel, the flow velocity in the middle part of the fluid is different from that in the periphery, the flow velocity in the middle part of the fluid is higher, the flow velocity in the periphery is lower, and bubbles are easy to generate in the periphery and gas-liquid two phases are formed.

As shown in fig. 1 to 6, in the present embodiment, the filtering portion 10 has a first region and a second region 102, and the second region 102 is disposed outside the first region in a circumferential ring shape; the first region has through holes 101, and the second region 102 is a filtering region for filtering bubbles. By the arrangement, the fluid flowing out of the small-section channel, namely the liquid-phase refrigerant in the middle part, passes through the through holes 101 as much as possible, and the surrounding fluid, namely the gas-liquid two-phase refrigerant containing bubbles, passes through the filtering area as much as possible. The filtering effect on bubbles of the fluid is ensured, and meanwhile, the smoothness of fluid circulation is ensured.

Further, the through hole 101 is provided coaxially with the filter portion 10. In general, when assembling, the filtering portion 10 is coaxially disposed with the small-section passage, and the through hole 101 is disposed coaxially with the filtering portion 10, so that it is ensured that the middle portion of the fluid flowing out of the small-section passage directly flows into the buffer portion 20 through the through hole 101, and the smoothness of fluid circulation is further improved.

In this embodiment, the inner edge of the second region 102 extends to the wall of the through hole 101, and the outer edge of the second region 102 extends to the outer side wall of the filtering portion 10. By such arrangement, the filter unit 10 can be ensured to have a sufficient filter area, and the filtering effect on bubbles can be further improved.

The specific structure of the filter unit 10 is not limited in this embodiment. In this embodiment, the entire filter unit 10 is a sintered filter mesh having a substantially circular annular plate-like structure. By this arrangement, the filter portion 10 can be applied to most circular channels, and the adaptability of the device is improved.

In other embodiments of the present disclosure, the outer contour of the filtering portion 10 may be configured as a polygonal structure, and the contour of the corresponding channel may be adapted.

The specific form of the through hole 101 is not limited in this scheme, and the through hole can be set to be a round through hole or a special-shaped through hole, and can be matched with the actual working condition. In this embodiment, the through hole 101 is a circular through hole.

As shown in fig. 1, 7 to 9, in this embodiment, the buffer portion 20 is disposed coaxially with the filter portion 10, the liquid inlet 201 is disposed on an end face of the buffer portion 20 near one end of the filter portion 10, and the liquid inlet 201 is disposed coaxially with the through hole 101. The axial projection of the through hole 101 on the buffer portion 20 is located in the liquid inlet 201. The diameter of the liquid inlet 201 is larger than the inner diameter of the second region, and the diameter of the liquid inlet 201 is smaller than the outer diameter of the second region. By this arrangement, the buffer portion 20 can be prevented from blocking the fluid flowing through the through hole 101, and the smoothness of the fluid flowing can be ensured.

Specifically, the cross-sectional area of the buffer chamber 202 gradually decreases in the direction from the filter portion 10 to the buffer portion 20. In this embodiment, the cross section of the buffer chamber 202 along the direction from the filter portion 10 to the buffer portion 20 is substantially in the shape of an inverted triangle. By the arrangement, the side wall of the buffer cavity 202 is a smooth surface, the front impact of fluid on the buffer cavity 202 is reduced, the smoothness of fluid circulation in the buffer cavity is guaranteed, the buffer effect of the buffer cavity 202 is improved, and the noise reduction effect is improved.

Further, an end surface of the buffer chamber 202 at an end far from the filtering portion 10 is an arc surface. By the arrangement, the direct impact force of the fluid on the buffer cavity 202 can be further reduced, the buffer effect of the buffer cavity 202 on the fluid is further improved, and the noise reduction effect is further improved.

In other embodiments of the present disclosure, the cross section of the buffer chamber 202 along the direction from the filtering portion 10 to the buffer portion 20 may also be configured as an inverted trapezoid structure.

In other embodiments of the present embodiment, the cross section of the buffer chamber 202 along the direction from the filtering portion 10 to the buffer portion 20 may also be rectangular.

Further, the buffer portion 20 has a plurality of chokes 203, and the plurality of chokes 203 are spaced apart along the circumferential direction of the buffer chamber 202. The arrangement of the plurality of chokes 203 can further improve the effect of diversion and noise reduction on the fluid in the buffer cavity 202, and greatly reduce the noise of the fluid.

Further, the projection of the through hole 101 in the axial direction of the buffer portion 20 does not coincide with any of the throttle openings 203. By the arrangement, the situation that the fluid flowing into the buffer cavity 202 from the through hole 101 directly flows out of the buffer cavity 202 from the throttle 203 can be reduced, the buffer effect of the buffer cavity 202 is improved, and the noise of the fluid is further reduced.

Further, the buffer portion 20 includes a cylindrical tube section 21 and a tapered tube section 22 which are sequentially communicated in the axial direction, the cylindrical tube section 21 is disposed close to the filter portion 10, one end of the tapered tube section 22 remote from the cylindrical tube section 21 is closed, and the choke 203 is disposed on the side wall of the tapered tube section 22. By the arrangement, the cylindrical pipe section 21 can be matched with the filtering part 10 or other parts, and convenience in assembling the buffering part 20 is improved.

The specific shape of the orifice 203 is not limited in this embodiment.

In some embodiments of the present disclosure, the cross section of the orifice 203 is circular, and an included angle is formed between the axial direction of the orifice 203 and the axial direction of the buffer chamber 202.

In other embodiments of the present disclosure, the cross section of the orifice 203 is circular, and the axial direction of the orifice 203 is parallel to the axial direction of the buffer chamber 202.

In this embodiment, the liquid inlet 201 is disposed on the cylindrical tube section 21 and penetrates the cylindrical tube section 21 along the axial direction, and the diameter of the liquid inlet 201 is the same as the diameter of one end of the buffer cavity 202 near the liquid inlet 201. And, the cylindrical tube section 21 and the tapered tube section 22 are integrally formed. By this arrangement, convenience in processing the buffer portion 20 can be improved.

Further, the outer diameter of the cylindrical tube section 21 is the same as the outer diameter of the filter portion 10. By this arrangement, the convenience of assembling the cylindrical tube section 21 and the filter portion 10 can be improved.

As shown in fig. 1 to 11, the present utility model also provides an electronic expansion valve comprising a valve body 30 and the above-described muffler assembly, the valve body 30 having a valve port 301, the muffler assembly being disposed downstream of the valve port 301, and a filter portion 10 of the muffler assembly being disposed adjacent to the valve port 301.

Specifically, the valve body 30 has a valve port 301, a flaring section 302 and a connecting section 303 which are sequentially communicated, the filtering portion 10 of the silencing assembly is located in the connecting section 303, the outer side wall of the buffering portion 20 of the silencing assembly is welded with the inner wall of the connecting section 303, one end, far away from the buffering portion 20, of the filtering portion 10 is abutted to the flaring section 302, and the other end of the filtering portion 10 is abutted to the buffering portion 20. So set up, can promote the convenience of assembling this amortization subassembly and valve body 30. And the air bubbles in the fluid can flow to the filtering part 10 through the hole wall of the flaring section 302, so that the flaring section 302 has a certain air bubble guiding effect.

Further, the through hole 101 of the filter portion 10 is disposed coaxially with the valve port 301. By the arrangement, the middle part of the fluid flowing out of the valve port 301 is opposite to the through hole 101, so that the smoothness of the fluid flowing into the buffer cavity 202 is improved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a silencing assembly, its characterized in that, silencing assembly has filter unit (10) and buffer (20) that set gradually along the axis direction, filter unit (10) are used for filtering the bubble in the two-phase fluid of gas-liquid, buffer (20) are located filter unit (10)'s low reaches, buffer (20) have feed liquor mouth (201), buffer chamber (202) and choke (203) that communicate in proper order, feed liquor mouth (201) set up buffer (20) be close to filter unit (10) one end, choke (203) set up on the lateral wall of buffer (20).

2. The muffler assembly of claim 1, wherein,

The filter part (10) is provided with a first area and a second area (102), and the second area (102) is arranged outside the first area in a circumferential ring shape;

The first region is provided with a through hole (101), and the second region (102) is a filtering region which is used for filtering the bubbles.

3. The muffler assembly as claimed in claim 2, characterized in that the through hole (101) is arranged coaxially with the filter house (10).

4. The muffler assembly as defined in claim 1, wherein the cross-sectional area of the cushion chamber (202) gradually decreases in a direction from the filtering portion (10) to the cushion portion (20).

5. The muffler assembly as defined in claim 4, wherein an end surface of the buffer chamber (202) at an end remote from the filter portion (10) is an arcuate surface.

6. The muffler assembly as defined in claim 2, wherein the cushion portion (20) has a plurality of the chokes (203), the plurality of chokes (203) being spaced apart along a circumference of the cushion chamber (202).

7. The muffler assembly as claimed in claim 6, characterized in that the axial projection of the through hole (101) on the buffer (20) is not coincident with any of the chokes (203).

8. The muffler assembly of claim 1, wherein,

The buffer part (20) comprises a cylindrical pipe section (21) and a conical pipe section (22) which are sequentially communicated along the axial direction, the cylindrical pipe section (21) is close to the filtering part (10), one end, far away from the cylindrical pipe section (21), of the conical pipe section (22) is closed, and the throttle opening (203) is formed in the side wall of the conical pipe section (22).

9. An electronic expansion valve, characterized by comprising a valve body (30) and a silencing assembly according to any of claims 1 to 8, the valve body (30) having a valve port (301), the silencing assembly being arranged downstream of the valve port (301), a filter portion (10) of the silencing assembly being arranged close to the valve port (301).

10. The electronic expansion valve according to claim 9, wherein the valve body (30) is provided with the valve port (301), a flaring section (302) and a connecting section (303) which are communicated in sequence, the filtering part (10) of the silencing assembly is positioned in the connecting section (303), the outer side wall of the buffering part (20) of the silencing assembly is welded with the inner wall of the connecting section (303), one end, far away from the buffering part (20), of the filtering part (10) is abutted with the flaring section (302), and the other end of the filtering part (10) is abutted with the buffering part (20).