Throttle valve and air conditioning system

Abstract

The throttling valve comprises a valve seat assembly, a valve element and a silencing part, the valve seat assembly is provided with a valve port, and the valve element is movably arranged in the valve seat assembly and can open or close the valve port; the silencing piece is installed on the valve element, and the silencing piece and the valve port are oppositely arranged in the flowing direction of the refrigerant in the valve port. The throttle valve provided by the utility model can effectively reduce the noise during throttling.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a throttle valve and an air conditioning system. Background Art

[0002] The throttle valve is mainly used in air conditioning systems. A valve core is installed in the throttle valve. The valve core cooperates with the valve port to open or close the valve port and adjust the flow rate of the refrigerant flowing through the valve port. However, when the refrigerant flows out of the valve port, the flow area increases rapidly, which causes a large number of bubbles to be generated in the refrigerant. As the bubbles flow through the valve body with the refrigerant, they impact the valve seat assembly or the valve core and break, and generate vibrations, causing noise. Utility Model Content

[0003] Based on this, it is necessary to provide a throttle valve and an air conditioning system that can effectively reduce throttling noise.

[0004] A throttle valve comprises a valve seat assembly, a valve core and a silencer. The valve seat assembly has a valve port. The valve core is movably mounted in the valve seat assembly and can open or close the valve port. The silencer is mounted on the valve core and is arranged opposite to the valve port along the flow direction of the refrigerant.

[0005] In one of the embodiments, when the valve core closes the valve port, the silencer is spaced apart from the end surfaces of the valve port that are close to each other.

[0006] In one embodiment, the valve core includes a main body section, a sealing section, and a connecting section connecting the main body section and the sealing section. The sealing section is arranged close to the valve port and is used to open or close the valve port. The silencer is fixedly sleeved on the connecting section; wherein, the maximum diameter of the sealing section is d1, the maximum diameter of the connecting section is d2, the maximum diameter of the main body section is d3, and d3>d2≥d1.

[0007] In one of the embodiments, the projection of the silencer on the plane where the valve port is located does not exceed the projection of the main body section on the plane where the valve port is located.

[0008] In one embodiment, the cross-sectional shape of the silencer is the same as the cross-sectional shape of the main body section, and the distance from a preset position on the outer peripheral wall of the silencer to the center axis of the valve core is defined as l1, and the distance from a corresponding position on the outer peripheral wall of the main body section to the center axis of the valve core is defined as l2, wherein l2-0.05mm<l1<l2.

[0009] In one embodiment, the cross-sectional shape of the silencer is different from the cross-sectional shape of the main body section. The cross-sectional shape of the silencer is circular, and the outer diameter of the silencer is l1. The minimum distance from the outer peripheral wall of the main body section to the center axis of the valve core is l2, wherein l2-0.05mm<l1<l2.

[0010] In one embodiment, the muffler is configured as a porous structure, or the muffler is configured as one of mineral wool board, glass wool, foam plastic, and metal powder sintered parts. In one embodiment, the muffler is configured as a plate-like structure, and a plurality of through holes are opened on the plate-like structure muffler, and the through holes penetrate the end surface of the muffler facing the valve port and the end surface away from the valve port.

[0011] In one embodiment, the throttle valve further includes a valve tube, the valve seat assembly includes a first valve seat and a second valve seat, the first valve seat and the second valve seat are located at both ends of the valve tube, the first valve seat is provided with a first valve port, the second valve seat is provided with a second valve port, and the valve core includes a first valve core and a second valve core; wherein the silencer is mounted on the first valve core, the first valve core is movably mounted on the first valve seat and is used to open or close the first valve port, and the first valve core cooperates with the first valve port to achieve throttling. The second valve core is movably mounted on the second valve seat and is used to open or close the second valve port.

[0012] An air conditioning system comprises the throttle valve described in any one of the above embodiments.

[0013] Compared with the prior art, the throttle valve and air conditioning system provided by the present application have a muffler for absorbing or breaking bubbles in the refrigerant. Furthermore, since the muffler is arranged opposite to the valve port along the flow direction of the refrigerant, when the valve port is opened, along the flow direction of the refrigerant, the muffler forms a barrier in front of the valve port, thereby preventing the refrigerant from rapidly diffusing to the surroundings when flowing out of the valve port, thereby causing a rapid increase in the flow area, which is beneficial to reducing the amount of bubbles generated when the refrigerant flows out of the valve port, thereby further reducing the noise during throttling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 A partial schematic diagram of a throttle valve provided for this application;

[0016] Figure 2 A cross-sectional view of a throttle valve provided for this application;

[0017] Figure 3 A schematic diagram of the structure of the valve core provided for this application;

[0018] Figure 4 A top view of the valve core provided for this application;

[0019] Figure 5A schematic structural diagram of a sound-absorbing member according to one embodiment of the present application;

[0020] Figure 6 for Figure 5 a cross-sectional view of the muffler shown;

[0021] Figure 7 A schematic structural diagram of a sound-absorbing member according to another embodiment of the present application;

[0022] Figure 8 for Figure 7 A cross-sectional view of the silencer shown.

[0023] Figure numerals: 100, throttle valve; 10, valve seat assembly; 11, valve port; 111, first valve port; 112, second valve port; 12, first valve seat; 13, second valve seat; 14, valve chamber; 15, second flow channel; 20, valve core; 21, main body section; 211, milling surface; 22, sealing section; 23, connecting section; 24, first valve core; 25, second valve core; 26, first flow channel; 30, silencer; 31, through hole; 40, valve pipe; 41, first chamber; 42, second chamber; 50, connecting piece; 51, first channel; 52, second channel; 60, filter assembly. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0029] See also Figure 1 The present application provides a throttle valve 100, which includes a valve seat assembly 10, a valve core 20 and a muffler 30. The valve seat assembly 10 has a valve port 11, and the valve core 20 is movably mounted in the valve seat assembly 10 and can open or close the valve port 11. The muffler 30 is mounted on the valve core 20, and the muffler 30 is arranged opposite to the valve port 11 along the flow direction of the refrigerant. The muffler 30 is used to absorb or break bubbles in the refrigerant. In addition, since the muffler 30 is arranged opposite to the valve port 11 along the flow direction of the refrigerant, when the valve port 11 is opened, along the flow direction of the refrigerant, the muffler 30 forms a barrier in front of the valve port 11, thereby preventing the refrigerant from rapidly diffusing to the surroundings when flowing out of the valve port 11, thereby causing a rapid increase in the flow area, which is conducive to reducing the amount of bubbles generated when the refrigerant flows out of the valve port 11, and is conducive to further reducing the throttling noise.

[0030] Optionally, the silencer 30 is configured as a porous structure, which means that the silencer 30 has multiple holes. The silencer absorbs and eliminates bubbles in the fluid through the holes thereon to prevent the bubbles from following the flow of the refrigerant and directly impacting the valve seat assembly 10 or the valve core 20, thereby effectively reducing throttling noise.

[0031] For example, in one embodiment, Figure 5 and Figure 6 As shown, the silencer 30 is configured as a filter structure. In this embodiment, the silencer 30 adheres to and decomposes bubbles in the refrigerant through the filter.

[0032] In another embodiment, if Figure 7 and Figure 8 As shown, the silencer 30 may also be configured as a plate-like structure, and a plurality of through holes 31 are provided on the plate-like structure silencer 30, and the through holes 31 penetrate the end surface of the silencer 30 facing the valve port 11 and the end surface away from the valve port 11. In this embodiment, the silencer 30 absorbs and decomposes bubbles through the through holes 31.

[0033] Alternatively, in other embodiments, the silencer 30 may also be configured as one of mineral wool board, glass wool, foam plastic, and metal powder sintered component.

[0034] Please continue reading Figure 1 The valve seat assembly 10 has a valve cavity 14, and the valve port 11 is connected to the valve cavity 14. The silencer 30 is fixedly installed on the valve core 20 and can follow the valve core 20 to move in the valve cavity 14 toward or away from the valve port 11. At least part of one end of the valve core 20 can extend into the valve port 11, and part of the outer wall of the valve core 20 cooperates with the inner wall of the valve port 11 to form a first flow channel 26. Specifically, as the valve core 20 moves toward the direction close to the valve port 11 and gradually penetrates into the valve port 11, the flow area of ​​the first flow channel 26 gradually decreases to throttle the refrigerant flowing from the valve port 11 to the valve core 20, until the outer wall of the valve core 20 abuts against the inner wall of the valve port 11, and the flow area of ​​the first flow channel 26 is zero, that is, the valve port 11 is closed. Correspondingly, as the valve core 20 moves away from the direction close to the valve port 11 and gradually leaves the valve port 11, the flow area of ​​the first flow channel 26 gradually increases, thereby gradually opening the valve port 11.

[0035] Furthermore, if Figure 1 As shown, when the valve core 20 closes the valve port 11, the silencer 30 is spaced apart from the end faces of the valve port 11 that are close to each other. It is understandable that such a setting can avoid interference between the silencer 30 and the valve port 11 when the valve core 20 closes the valve port 11, thereby preventing the valve port 11 from being closed tightly.

[0036] See also Figure 1 , Figure 3 and Figure 4 The valve core 20 includes a main body section 21, a sealing section 22, and a connecting section 23 connecting the main body section 21 and the sealing section 22. The sealing section 22 is arranged close to the valve port 11 and is used to open or close the valve port 11. The silencer 30 is fixedly sleeved on the connecting section 23 and welded to the connecting section 23. The maximum diameter of the sealing section 22 is d1, the maximum diameter of the connecting section 23 is d2, the maximum diameter of the main body section 21 is d3, and d3>d2≥d1. The outer peripheral wall of the main body section 21 and the inner wall of the valve cavity 14 are arranged at intervals to form a second flow channel 15, and the second flow channel 15 is for the circulation of refrigerant.

[0037] Furthermore, the projection of the muffler 30 on the plane where the valve port 11 is located does not exceed the projection of the main body section 21 on the plane where the valve port 11 is located. That is, along the circumference of the valve core 20, the outer edge of the muffler 30 does not protrude from the outer edge of the main body section 21, so that the muffler 30 can be prevented from blocking the refrigerant in the second flow channel 15, and even if the muffler 30 is blocked, it will not affect the flow of the refrigerant from the second flow channel 15.

[0038] Optionally, the size relationship between the silencer 30 and the main body section 21 can be set in the following two forms.

[0039] Embodiment 1:

[0040] The cross-sectional shape of the muffler 30 is the same as that of the main body 21. The distance from the preset position on the outer peripheral wall of the muffler 30 to the central axis of the muffler 30 is defined as l1, and the distance from the corresponding position on the outer peripheral wall of the main body 21 to the central axis of the main body 21 is defined as l2, wherein l2-0.05mm<l1<l2. It should be noted that the "corresponding position" on the outer peripheral wall of the main body 21 refers to the position on the outer peripheral wall of the main body 21 along the circumference of the valve core 20, which has the same deflection angle relative to the central axis of the valve core 20 as the "preset position" on the outer peripheral wall of the muffler 30. It can be understood that, in this way, along the circumference of the valve core 20, the outer edge contour line of the muffler 30 is located on the inner side of the outer edge contour line of the main body 21, and is parallel to the outer edge contour line of the main body 21. In addition, a gap of the same size is formed between the outer edge contour line of the muffler 30 and the outer edge contour line of the main body 21, and the value of this gap is between 0 and 0.05mm. The larger the outer edge contour of the muffler 30 is, the better the absorption effect of the muffler 30 on bubbles is. Therefore, by setting l2-0.05mm<l1<l2, the muffler 30 has a sufficiently large outer edge contour, so as to avoid the muffler 30 from blocking the refrigerant in the second flow channel 15, and at the same time, it is also beneficial to ensure the effect of the muffler 30 in absorbing bubbles. For example, the gap value between the outer edge contour of the muffler 30 and the outer edge contour of the main body section 21 can be 0.015mm, 0.025mm, 0.035mm, 0.04mm, etc., which can be set according to actual needs.

[0041] Embodiment 2

[0042] See also Figures 4 to 6, the cross section of the muffler 30 is different from that of the main section 21. Optionally, the cross section of the muffler 30 is circular, and the outer diameter of the muffler 30 is l1, and the minimum spacing from the outer peripheral wall of the main section 21 to the central axis of the main section 21 is l2, wherein l2-0.05mm<l1<l2. In this way, along the circumference of the valve core 20, the outer peripheral wall of the muffler 30 is located on the inner side of the outer edge contour line of the main section 21, and forms a gap of inconsistent size with the outer edge contour line of the main section 21, and the minimum value of the gap is between 0 and 0.05mm. Similarly, the larger the outer diameter l1 of the muffler 30, the better the absorption effect of the muffler 30 on bubbles. Therefore, by setting l2-0.05mm<l1<l2, the muffler 30 has a sufficiently large outer diameter l1, thereby avoiding the muffler 30 from blocking the refrigerant in the second flow channel 15, and also helping to ensure the effect of the muffler 30 in absorbing bubbles. For example, the minimum value of the gap may be 0.015 mm, 0.025 mm, 0.035 mm, 0.04 mm, etc., and may be set according to actual needs.

[0043] For example, in one embodiment, the silencer 30 is cylindrical, and the outer diameter of the silencer 30 is l1; the main body section 21 is cylindrical, and the outer wall of the cylindrical surface has four evenly spaced milling surfaces 211, and the distance between the milling surface 211 and the central axis of the valve core 20 is l2, wherein l2-0.05mm<l1<l2. The milling surface 211 is used to increase the distance between the outer peripheral wall of the main body section 21 and the inner wall of the valve cavity 14, that is, to increase the flow area of ​​the second flow channel 15.

[0044] The throttle valve 100 can be configured for one-way flow or two-way flow. When the throttle valve 100 is configured for two-way flow, please refer to Figure 2 The throttle valve 100 also includes a valve tube 40, and the valve seat assembly 10 includes a first valve seat 12 and a second valve seat 13. The first valve seat 12 and the second valve seat 13 are located at both ends of the valve tube 40. The first valve seat 12 is provided with a first valve port 111, and the second valve seat 13 is provided with a second valve port 112. The valve core 20 includes a first valve core 24 and a second valve core 25. Among them, the silencer 30 is installed on the first valve core 24, and the first valve core 24 is movably installed on the first valve seat 12 and is used to open or close the first valve port 111, and the first valve core 24 cooperates with the first valve port 111 to achieve throttling, and the second valve core 25 is movably installed on the second valve seat 13 and is used to open or close the second valve port 112. In this way, the throttle valve 100 can achieve two-way flow and form a one-way throttling at the first valve port 111.

[0045] Specifically, a connecting piece 50 is further provided in the valve pipe 40, and the connecting piece 50 is provided in the valve pipe 40 and is located between the first valve seat 12 and the second valve seat 13. The valve pipe 40 forms a first cavity 41 at one end of the first valve seat 12 away from the second valve seat 13, and the valve pipe 40 forms a second cavity 42 at one end of the second valve seat 13 away from the first valve seat 12. The connecting piece 50 has a first channel 51 and a second channel 52, and the first channel 51 connects the second cavity 42 and the first valve port 111. In this way, the refrigerant can flow from the second cavity 42 to the first valve seat 12 through the first channel 51 and the first valve port 111, and throttling occurs at the first valve port 11. The second channel 52 connects the first cavity 41 and the second valve port 112. In this way, the refrigerant can flow from the first cavity 41 to the second valve seat 13 through the second channel 52 and the second valve port 112. Among them, the first cavity 41 and the second cavity 42 are respectively provided with a filter assembly 60, and the filter assembly 60 is used to filter the refrigerant. During the assembly of the throttle valve 100, the first valve seat 12 and the second valve seat 13 can be press-fitted and connected to the two ends of the connecting piece 50 respectively, and then the silencer 30 can be welded and fixed to the first valve core 24 and installed into the first valve seat 12, and the second valve core 25 can be installed into the second valve seat 13; then the above components are installed into the valve tube 40 together, and the connecting piece 50 is fixedly connected to the valve tube 40 by necking the valve tube 40.

[0046] The present application also provides an air conditioning system, which includes the throttle valve 100 described in any one of the above embodiments.

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A throttle valve, characterized in that: The throttle valve comprises a valve seat assembly (10), a valve core (20) and a silencer (30); the valve seat assembly (10) has a valve port (11); the valve core (20) is movably mounted in the valve seat assembly (10) and is capable of opening or closing the valve port (11); The silencer (30) is installed on the valve core (20), and along the flow direction of the refrigerant, the silencer (30) is arranged opposite to the valve port (11).

2. The throttle valve according to claim 1, characterized in that: When the valve core (20) closes the valve port (11), the silencer (30) is spaced apart from the end surfaces of the valve port (11) that are close to each other.

3. The throttle valve according to claim 1, characterized in that: The valve core (20) comprises a main body section (21), a sealing section (22) and a connecting section (23) connecting the main body section (21) and the sealing section (22); the sealing section (22) is arranged close to the valve port (11) and is used to open or close the valve port (11); the silencer (30) is fixedly sleeved on the connecting section (23); The maximum diameter of the sealing section (22) is d1, the maximum diameter of the connecting section (23) is d2, the maximum diameter of the main body section is d3, and d3>d2≥d1.

4. The throttle valve according to claim 3, characterized in that: The projection of the silencer (30) on the plane where the valve port (11) is located does not exceed the projection of the main body section (21) on the plane where the valve port (11) is located.

5. The throttle valve according to claim 4, characterized in that: The cross-sectional shape of the silencer (30) is the same as the cross-sectional shape of the main body section (21), and the distance from a preset position on the outer peripheral wall of the silencer (30) to the central axis of the valve core (20) is defined as l1, and the distance from a corresponding position on the outer peripheral wall of the main body section (21) to the central axis of the valve core (20) is defined as l2, wherein l2-0.05mm<l1<l2.

6. The throttle valve according to claim 4, characterized in that: The cross-sectional shape of the silencer (30) is different from the cross-sectional shape of the main body section (21); the cross-sectional shape of the silencer (30) is circular, and the outer diameter of the silencer (30) is l1; the minimum distance between the outer peripheral wall of the main body section (21) and the central axis of the valve core (20) is l2, wherein l2-0.05mm<l1<l2.

7. The throttle valve according to claim 1, characterized in that The silencer (30) is configured as a porous structure, or the silencer (30) is configured as one of a mineral wool board, glass wool, foam plastic, and a metal powder sintered part.

8. The throttle valve according to claim 1, characterized in that The silencer (30) is configured as a plate-like structure, and a plurality of through holes (31) are provided on the silencer (30) of the plate-like structure. The through holes (31) penetrate the end surface of the silencer (30) facing the valve port (11) and the end surface facing away from the valve port (11).

9. The throttle valve according to claim 1, characterized in that The throttle valve further comprises a valve tube (40), the valve seat assembly (10) comprises a first valve seat (12) and a second valve seat (13), the first valve seat (12) and the second valve seat (13) are located at two ends of the valve tube (40), the first valve seat (12) is provided with a first valve port (111), the second valve seat (13) is provided with a second valve port (112), and the valve core (20) comprises a first valve core (24) and a second valve core (25); The silencer (30) is installed on the first valve core (24), the first valve core (24) is movably mounted on the first valve seat (12) and is used to open or close the first valve port (111), and the first valve core (24) cooperates with the first valve port (111) to achieve throttling, and the second valve core (25) is movably mounted on the second valve seat (13) and is used to open or close the second valve port (112).

10. An air conditioning system, characterized in that: The air conditioning system comprises a throttle valve according to any one of claims 1 to 9.

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