CN117704144A

CN117704144A - Expansion valve and air conditioning system

Info

Publication number: CN117704144A
Application number: CN202211090561.6A
Authority: CN
Inventors: 张克鹏; 赵俊; 贺宇辰; 徐冠军
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2024-03-15

Abstract

The invention provides an expansion valve and an air conditioning system, the expansion valve comprises a valve body, a valve port and a flow passage are arranged in the valve body, the flow cross section of the valve port is A, and a silencing assembly comprises: the silencing component is arranged in the flow channel and is provided with a silencing channel communicated with the flow channel; the flow cross-sectional area of the sound damping passage is 0.5A to 2A. The invention solves the problem of poor silencing effect of the silencing component in the prior art.

Description

Expansion valve and air conditioning system

Technical Field

The invention relates to the technical field of expansion valve silencing, in particular to an expansion valve and an air conditioning system.

Background

At present, in the use process of the electronic expansion valve, because two-phase fluid flows unstably, bubbles before or after throttling are different in size, discontinuous noise is easy to generate, and the noise value is large.

In the prior art, a silencing structure is generally arranged on an electronic expansion valve, the silencing structure comprises a plurality of silencing blocks with fine holes, and a refrigerant achieves a silencing effect in the process of flowing through the fine holes.

However, the structure of the noise reduction structure is complex, the refrigerant needs to flow through two-stage pore channels, impurities in the refrigerant are easy to be blocked in the pores, and the noise reduction effect is affected.

Disclosure of Invention

The invention mainly aims to provide an expansion valve and an air conditioning system, which are used for solving the problem that a silencing assembly in the prior art is poor in silencing effect.

In order to achieve the above object, according to a first aspect of the present invention, there is provided an expansion valve comprising a valve body having a valve port and a flow passage therein, the valve port having a flow cross-sectional area a, the expansion valve further comprising: the silencing component is arranged in the flow channel and is provided with a silencing channel communicated with the flow channel; the flow cross-sectional area of the sound damping passage is 0.5A to 2A.

Further, the sound damping channel comprises a flow channel; at least part of the surface of the silencing component is attached to the inner wall surface of the flow channel, the circulation groove is arranged on the surface of the silencing component, and the circulation groove is sunken towards the middle of the silencing component relative to the surface of the silencing component.

Further, the silencing component comprises a first end and a second end which are oppositely arranged, and the circulation groove extends in a spiral shape from the first end of the silencing component to the second end of the silencing component.

Further, the flow-through channel extends along a curved trajectory; or, the flow channel extends in the axial direction of the muffler component.

Further, the plurality of flow grooves are arranged at intervals along the circumferential direction of the silencing member.

Further, the silencing channel comprises a plurality of silencing holes, and the silencing holes are arranged in the silencing component at intervals.

Further, the hole core line of the silencing hole is parallel to the axis of the silencing component; or, the sound deadening hole extends along a curved trajectory.

Further, the expansion valve further includes: the support is arranged in the runner, the installation cavity is arranged in the support and communicated with the runner, and the silencing component is arranged in the installation cavity.

Further, at least part of the silencing component is in interference fit with the mounting cavity; or the silencing component is riveted with the inner wall surface of the mounting cavity.

According to a second aspect of the present invention, there is provided an air conditioning system, comprising a refrigerant circulation line and an expansion valve, wherein the expansion valve is disposed in the refrigerant circulation line, and the expansion valve is the expansion valve described above.

According to the technical scheme, the expansion valve comprises a valve body, wherein a valve port and a flow channel are arranged in the valve body, the flow cross section of the valve port is A, a silencing part is arranged in the flow channel, and a silencing channel communicated with the flow channel is arranged on the silencing part; the flow cross-sectional area of the sound damping passage is 0.5A to 2A. When the area of the flow section of the silencing channel is smaller than 0.5A, the medium can be throttled when flowing through the silencing component, the circulation of the medium in the flow channel is affected, when the area of the flow section of the silencing channel is larger than 2A, the silencing effect of the silencing channel can be reduced, and bubbles in the medium cannot be thinned. By limiting the area of the flow section of the silencing channel, the medium can not be throttled in the process of flowing through the silencing channel, and the silencing effect can be achieved.

Drawings

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

fig. 1 shows a schematic structural view of an expansion valve according to the present invention;

FIG. 2 shows a structural cross-sectional view of a first embodiment of a sound attenuating member in an expansion valve according to the present invention;

FIG. 3 shows a schematic installation view of a first embodiment of a silencing component in an expansion valve according to the invention;

FIG. 4 is a schematic view showing the structure of a first embodiment of a muffler component in an expansion valve according to the present invention;

FIG. 5 shows a schematic structural view of a second embodiment of a silencing component in an expansion valve according to the present invention;

FIG. 6 shows a schematic installation view of a second embodiment of a sound attenuating member in an expansion valve according to the present invention;

FIG. 7 is a schematic view showing the construction of a third embodiment of a muffler component in an expansion valve according to the present invention;

FIG. 8 shows a schematic installation view of a third embodiment of a sound attenuating member in an expansion valve according to the present invention;

fig. 9 shows a schematic structural view of an air conditioning system according to the present invention.

Wherein the above figures include the following reference numerals:

100. a valve body; 101. a valve port; 102. a flow passage; 400. a refrigerant circulation line; 500. a first filter; 600. a second filter; 700. an evaporator; 800. a condenser;

1. a sound deadening member; 10. a sound damping channel; 11. a flow channel; 12. a sound deadening hole; 2. a bracket; 20. a mounting cavity; 3. and a positioning part.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

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 example embodiments in accordance with 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.

Referring to fig. 1 to 9, the present invention provides an expansion valve, which includes a valve body 100, wherein the valve body 100 has a valve port 101 and a flow passage 102, the flow cross-sectional area of the valve port 101 is a, and the expansion valve further includes: the silencing component 1 is arranged in the flow channel 102, and a silencing channel 10 communicated with the flow channel 102 is arranged on the silencing component 1; the flow cross-sectional area of the sound damping passage 10 is 0.5A to 2A.

The expansion valve provided by the invention comprises a valve body 100, wherein a valve port 101 and a flow channel 102 are arranged in the valve body 100, the flow cross section area of the valve port 101 is A, a silencing component 1 is arranged in the flow channel 102, and a silencing channel 10 communicated with the flow channel 102 is arranged on the silencing component 1; the flow cross-sectional area of the sound damping passage 10 is 0.5A to 2A. When the area of the flow section of the silencing channel 10 is smaller than 0.5A, a significant pressure drop occurs when the medium flows through the silencing component 1, the medium in the flow channel 102 is affected, and when the area of the flow section of the silencing channel 10 is larger than 2A, the silencing effect of the silencing channel 10 is reduced, and bubbles in the medium cannot be thinned. By defining the area of the flow cross section of the sound-damping channel 10, the medium will not experience a significant pressure drop during the flow through the sound-damping channel 10, but will also have a sound-damping effect.

Here, the flow cross section of the valve port 101 in the present application refers to a cross section where the circumferential surface of the valve needle contacts the inner wall surface of the valve port channel when the valve is closed, and when the surface of the valve needle and the inner wall surface of the valve port channel are both cylindrical surfaces, the circumferential surface of the valve needle contacts the inner wall surface of the valve port channel, and at this time, the surface of the valve needle contacting the valve port channel is a cylindrical surface, and the radial cross section of the cylindrical surface is the flow cross section described above; when the bottom of the valve needle is a cone, the valve needle is provided with a radial circumferential surface which is in contact with the inner wall surface of the valve port channel as the valve port channel is in a cone shape, and the circumferential surface is a flow section.

Embodiment one:

specifically, the sound damping channel 10 includes a flow channel 11; at least a part of the surface of the silencer component 1 is attached to the inner wall surface of the flow passage 102, the flow channel 11 is provided on the surface of the silencer component 1, and the flow channel 11 is recessed toward the middle of the silencer component 1 with respect to the surface of the silencer component 1. In this way, a passage for the flow medium is formed between the flow channel 11 and the inner wall surface of the flow passage 102, and the arrangement is simple and easy to implement.

As shown in fig. 2 to 4, in a first embodiment of the flow channel 11 provided by the present invention, the silencing component 1 includes a first end and a second end disposed opposite to each other, and the flow channel 11 extends in a spiral shape from the first end of the silencing component 1 to the second end of the silencing component 1. In this way, a screw thread structure is formed on the outer surface of the silencing component 1, the medium in the flow channel 102 flows through the flow grooves 11, the flow stroke of the medium can be prolonged by the spiral flow grooves 11, and all bubbles in the medium can be thinned as much as possible, so that the silencing effect of the silencing component 1 is optimized. The flow cross-sectional area of the flow channel 11 is 0.5A to 2A.

In this embodiment, the muffler assembly further includes: the support 2 is arranged in the runner 102, the installation cavity 20 is arranged in the support 2, the installation cavity 20 is communicated with the runner 102, and the silencing component 1 is arranged in the installation cavity 20. At least part of the silencing component 1 is in interference fit with the mounting cavity 20; or, the muffler member 1 is riveted to the inner wall surface of the installation cavity 20. In this way, the medium can smoothly flow into the circulation groove 11, and the influence on the medium circulation and the silencing effect of the silencing component 1 caused by blocking the circulation groove 11 by the independently arranged supporting component is avoided.

In a second embodiment of the flow channel 11 provided by the invention, as shown in fig. 7 and 8, the flow channel 11 extends along a curved trajectory. The plurality of flow grooves 11 are provided, and the plurality of flow grooves 11 are provided at intervals in the circumferential direction of the muffler member 1. Wherein the total area of the flow cross section of each flow channel 11 is in the range of 0.5A to 2A. The flow of the medium is divided by the plurality of flow grooves 11, and bubbles generated in the medium are further offset. Wherein two adjacent flow channels 11 are connected by a protruding portion.

In this embodiment, the muffler assembly further includes: the support 2 is arranged in the runner 102, the installation cavity 20 is arranged in the support 2, the installation cavity 20 is communicated with the runner 102, and the silencing component 1 is arranged in the installation cavity 20. At least part of the silencing component 1 is in interference fit with the mounting cavity 20; or, the silencing member 1 is riveted with the inner wall surface of the installation cavity 20; or set up location portion 3 on the internal face of installation cavity 20, location portion 3 extends towards the middle part direction of installation cavity 20 by the internal face of installation cavity 20, and location portion 3 has the bearing terminal surface, and the bearing terminal surface is laminated with the bellying, carries out the bearing through the bearing terminal surface to the bellying, can utilize location portion 3 to support to sound-deadening part 1 like this, has still avoided location portion 3 to block the noise elimination effect that influences medium circulation and sound-deadening part 1 that leads to the circulation slot 11 simultaneously.

As shown in fig. 5 and 6, in the third embodiment of the flow groove 11 provided by the present invention, the flow groove 11 extends in the axial direction of the sound deadening member 1. The plurality of flow grooves 11 are provided, and the plurality of flow grooves 11 are provided at intervals in the circumferential direction of the muffler member 1. Wherein the total area of the flow cross section of each flow channel 11 is in the range of 0.5A to 2A. The flow of the medium is divided by the plurality of flow grooves 11, and bubbles generated in the medium are further offset. Wherein two adjacent flow channels 11 are connected by a protruding portion.

In the present application, the sound deadening passageway 10 includes a plurality of sound deadening holes 12, and the plurality of sound deadening holes 12 are provided at intervals in the sound deadening member 1. The hole core line of the silencing hole 12 is parallel to the axis of the silencing component 1; alternatively, the sound deadening hole 12 extends along a curved trajectory. The silencing effect on the medium is achieved by the cooperation of the silencing holes 12 and the circulation grooves 11. Wherein the sum of the total area of the flow cross section of each sound deadening hole 12 and the area of the flow cross section of the flow groove 11 is 0.5A to 2A.

Specifically, in the present application, the sound damping passage 10 includes the flow groove 11 and the sound damping hole 12, the flow groove 11 is provided at the surface of the sound damping member 1, the sound damping hole 12 is provided in the sound damping member 1, the sound damping hole 12 is a through hole, wherein the sum of the cross-sectional area of the flow section of the flow groove 11 and the cross-sectional area of the flow section of the sound damping hole 12 ranges from 0.5A to 2A. Through the common cooperation of circulation slot 11 and amortization hole 12, when the medium in runner 102 flows through amortization part 1, a part of medium is through circulation slot 11 amortization, and another part of medium is through amortization hole 12 amortization, can avoid the medium to flow through behind the amortization part 1 the medium flow direction concentrate and then lead to the condition of stress concentration, has reduced the impact force of medium to the amortization part 1 simultaneously, and it is more even to refine the bubble in the medium, has optimized the amortization effect.

In the present embodiment, the number of the circulation grooves 11 is one or more, and when the number of the circulation grooves 11 is one, the circulation grooves 11 extend from the first end to the second end of the silencing component 1 along the spiral direction, so that the outer surface of the silencing component 1 forms a thread structure; when the number of the flow grooves 11 is plural, the flow grooves 11 are provided at intervals in the circumferential direction of the muffler member 1, and at this time, the extending direction of the flow grooves 11 coincides with the axial direction of the muffler member 1 or the flow grooves 11 extend along a curved track. The number of the sound deadening holes 12 is plural, and the plurality of sound deadening holes 12 are provided in the sound deadening member 1 at intervals. When the number of the flow grooves 11 and the number of the sound deadening holes 12 are plural, the sum of the total area of the flow cross section of each flow groove 11 and the total area of the flow cross section of each sound deadening hole 12 is 0.5A to 2A.

Preferably, when the flow grooves 11 are provided in one, the cross-sectional area of the flow section of one flow groove 11 is equal to the total cross-sectional area of the flow sections of the plurality of sound deadening holes 12.

Embodiment two:

the present embodiment differs from the above-described embodiment in that the sum of the maximum cross-sectional area of the flow cross-section of the flow channel 11 and the minimum cross-sectional area of the flow cross-section of the sound deadening hole 12 is in the range of 0.5A to 2A.

Specifically, the area of the flow cross section of the flow channel 11 gradually decreases or gradually increases from both ends of the flow channel 11 to the middle of the flow channel 11; when the area of the flow cross section of the flow groove 11 gradually decreases from the two ends of the flow groove 11 to the middle of the flow groove 11, bubbles in the medium can be thinned while increasing the flow velocity when the medium flows through the flow groove 11, and the silencing effect can be improved.

When the silencing member 1 is placed in the vertical direction, the shape of the orthographic projection of the flow channel 11 on the horizontal plane is one or more of a circular ring shape, a rectangle, a triangle, and a trapezoid.

Further, the flow cross-sectional area of the sound deadening hole 12 gradually decreases or gradually increases from both ends of the sound deadening hole 12 to the middle of the sound deadening hole 12. When the area of the flow section of the sound deadening hole 12 is gradually reduced or gradually increased, the flow speed can be increased when the medium flows out, and bubbles with different sizes in the medium are gradually thinned in the process of flowing through the sound deadening hole 12 so as to optimize the sound deadening effect.

As shown in fig. 9, the present invention further provides an air conditioning system, which includes a refrigerant circulation pipeline 400 and an expansion valve, wherein the expansion valve is disposed on the refrigerant circulation pipeline 400, and the expansion valve is the expansion valve in the foregoing embodiment.

The refrigerant circulation pipeline 400 is further provided with an evaporator 700, a condenser 800, a first filter 500 and a second filter 600, and the valve body 100 of the expansion valve is arranged between the first filter 500 and the second filter 600, so that when the refrigerants in the refrigerant circulation pipeline 400 flow in different directions, the refrigerants can be filtered, and medium in the refrigerants is prevented from blocking the silencing channel 10.

From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

the expansion valve provided by the invention comprises a valve body 100, wherein a valve port 101 and a flow channel 102 are arranged in the valve body 100, the flow cross section area of the valve port 101 is A, a silencing component 1 is arranged in the flow channel 102, and a silencing channel 10 communicated with the flow channel 102 is arranged on the silencing component 1; the flow cross-sectional area of the sound damping passage 10 is 0.5A to 2A. When the area of the flow section of the silencing channel 10 is smaller than 0.5A, the medium throttles when flowing through the silencing component 1, the medium flowing in the flow channel 102 is affected, and when the area of the flow section of the silencing channel 10 is larger than 2A, the silencing effect of the silencing channel 10 is reduced, and bubbles in the medium cannot be thinned. By defining the area of the flow cross section of the sound-deadening passageway 10, the medium is not throttled during the flow through the sound-deadening passageway 10, and the sound-deadening effect can be achieved.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of being practiced otherwise than as specifically illustrated and described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "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 of "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.

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

Claims

1. An expansion valve, comprising a valve body (100), wherein the valve body (100) is internally provided with a valve port (101) and a flow passage (102), and the flow cross-sectional area of the valve port (101) is A, and the expansion valve is characterized in that the expansion valve further comprises:

a silencing component (1) arranged in the flow channel (102), wherein a silencing channel (10) communicated with the flow channel (102) is arranged on the silencing component (1);

the flow cross-section of the sound attenuation channel (10) has an area of 0.5A to 2A.

2. Expansion valve according to claim 1, characterized in that the sound-damping channel (10) comprises a flow channel (11);

at least part of the surface of the silencing part (1) is attached to the inner wall surface of the flow channel (102), the circulation groove (11) is formed in the surface of the silencing part (1), and the circulation groove (11) is sunken towards the middle of the silencing part (1) relative to the surface of the silencing part (1).

3. Expansion valve according to claim 2, wherein the silencing element (1) comprises a first end and a second end arranged opposite each other, the flow channel (11) extending helically from the first end of the silencing element (1) to the second end of the silencing element (1).

4. Expansion valve according to claim 2, characterized in that the flow channel (11) extends along a curved trajectory; or alternatively, the first and second heat exchangers may be,

the flow channel (11) extends in the axial direction of the silencing member (1).

5. The expansion valve of claim 4, wherein the valve is configured to,

the number of the circulation grooves (11) is plural, and the plurality of the circulation grooves (11) are arranged at intervals along the circumferential direction of the silencing component (1).

6. The expansion valve of claim 1, wherein the valve is configured to,

the silencing channel (10) comprises a plurality of silencing holes (12), and the silencing holes (12) are arranged in the silencing component (1) at intervals.

7. The expansion valve of claim 6, wherein the valve is configured to,

the hole core line of the silencing hole (12) is parallel to the axis of the silencing component (1); or, the sound deadening hole (12) extends along a curved trajectory.

8. The expansion valve of claim 1, further comprising:

the support (2) is arranged in the runner (102), an installation cavity (20) is arranged in the support (2), the installation cavity (20) is communicated with the runner (102), and the silencing component (1) is arranged in the installation cavity (20).

9. Expansion valve according to claim 8, wherein at least part of the silencing element (1) is interference fitted with the mounting cavity (20); or, the silencing component (1) is riveted with the inner wall surface of the installation cavity (20).

10. An air conditioning system comprising a refrigerant flow line (400) and an expansion valve, the expansion valve being arranged within the refrigerant flow line (400), characterized in that the expansion valve is an expansion valve according to any one of claims 1 to 9.