Valve silencer, electronic expansion valve and air conditioning system

Abstract

The utility model provides a valve silencer, an electronic expansion valve and an air-conditioning system, which comprise a shell, a first air inlet, a second air inlet, a first air outlet and a second air outlet, wherein the shell is provided with a first inlet and a first outlet for fluid to flow in and out; the flow dividing assembly is arranged in the shell and located at the first inlet, the flow dividing assembly comprises a guide column and a plurality of flow dividing plates arranged around the guide column, and fluid firstly flows and disperses in the circumferential direction of the guide column and then is scattered all around through the flow dividing plates so as to disperse and reduce bubbles in the fluid; and the gathering channels are located in the shell and connected with the flow dividing assembly and the first outlet, and the gathering channels are used for gathering the dispersed fluid and discharging the gathered fluid through the first outlet. According to the valve silencer, the electronic expansion valve and the air conditioning system, the technical problem that noise is large when a large-flow refrigerant enters and exits the electronic expansion valve in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction of control valves, and particularly relates to a valve silencer, an electronic expansion valve and an air conditioning system. Background Art

[0002] The electronic expansion valve is a key component in refrigeration and heating equipment. By controlling the opening degree of the electronic expansion valve, the flow rate of gas / liquid can be adjusted, so as to realize the system function and achieve the purpose of precise control.

[0003] With the improvement of the diversification of the functions of air conditioning systems, the application of electronic expansion valves is becoming more and more extensive. Refrigeration products use electronic expansion valves to adjust the flow rate of refrigerant in the air conditioning system to achieve the matching operation of the system. The refrigerant exists in a mixed flow state of gas and liquid, and the unstable flow state impacts the electronic expansion valve, resulting in abnormal noise in the internal adjustment channel of the electronic expansion valve, which affects the user experience.

[0004] In order to solve this defect, the related technology discloses a solution using a shunt hole and a shunt plate, which is arranged along the streamline direction. By shunting the refrigerant, a single fluid is divided into multiple fluids through a plurality of shunt holes and shunt plates to reduce noise. However, the direction of the refrigerant flow channel does not change, and the throttling effect of the shunt hole itself affects the flow state. Although the noise is reduced, the flow rate is decreased, and it is difficult to meet the noise reduction requirements for large flow rates when the opening degree is large.

[0005] Therefore, the existing technology needs to be further developed. Content of the Utility Model

[0006] The purpose of the utility model is to overcome the above technical deficiencies and provide a valve silencer, an electronic expansion valve and an air conditioning system to solve the technical problem of large noise when a large flow rate of refrigerant enters and exits the electronic expansion valve in the related technology.

[0007] To achieve the above technical purpose, the utility model adopts the following technical solutions: A valve silencer is provided, including: a housing, on which a first inlet and a first outlet for fluid to enter and exit are provided; a shunt assembly, which is arranged in the housing and is located at the first inlet. The shunt assembly includes a guide post and a plurality of shunt plates arranged around the guide post. The fluid first flows and spreads along the circumferential direction of the guide post, and then scatters around through the plurality of shunt plates to disperse and reduce the bubbles in the fluid; a plurality of gathering channels, each of which is located in the housing and connects the shunt assembly with the first outlet. The gathering channels are used to gather the dispersed fluid and discharge it through the first outlet.

[0008] Further, the end of the guide post is in a conical shape to guide the circumferential flow of the fluid.

[0009] Further, the flow splitter plate includes a straight plate and a curved plate. The straight plate is connected to the curved plate. The fluid first passes through the straight plate for preliminary separation and then scatters counterclockwise or clockwise around the circumference along the curved surface of the curved plate.

[0010] Further, the housing includes a first housing and a second housing. The first housing is connected to the second housing. The first housing is of a cylindrical structure. The first inlet is provided on the first housing. The flow splitting assembly is arranged inside the first housing. One end of the second housing is connected to the first housing, and the other end of the second housing gradually tapers. The first outlet is provided at the end of the second housing, so that the inner diameter of the first inlet is larger than that of the first outlet. A plurality of converging channels are all located on the inner wall of the second housing.

[0011] Further, the plurality of converging channels start from one end close to the first housing, spiral along the inner wall of the second housing, and gradually converge towards the first outlet to form a spiral channel.

[0012] Further, the spiral channel and the curved surface of the curved plate cooperate with each other in the fluid direction, so that after the fluid scatters along the curved surface of the curved plate in the clockwise or counterclockwise direction, it enters the spiral channel and spirals and converges along the inner wall of the second housing in the same direction to the first outlet.

[0013] Further, a plurality of flow splitting plates in the flow splitting assembly form a plurality of flow splitting channels around the guide column. The number of converging channels is N times the number of flow splitting channels, where N≥2.

[0014] An electronic expansion valve includes a valve seat and a silencing chamber. The silencing chamber is arranged inside the valve seat, and the valve silencer as described above is installed in the silencing chamber.

[0015] Further, it further includes a rotor and a valve needle. The rotor is rotatable relative to the valve seat. A second inlet, a second outlet and a throttle port for controlling the fluid flow rate by the valve needle are provided on the valve seat. The fluid enters from the second inlet, flows through the first inlet, the first outlet and the throttle port in sequence, and finally discharges from the second outlet.

[0016] An air-conditioning system includes the electronic expansion valve as described above.

[0017] Beneficial effects:

[0018] 1. For the valve silencer of the present utility model, by providing a flow splitting assembly, the refrigerant is scattered by a plurality of flow splitting plates, effectively dispersing and reducing the bubbles in the fluid and reducing the noise during fluid flow; after the refrigerant is dispersed, it re-converges in the converging channels, thus meeting the noise reduction requirements for the flow of a large flow of refrigerant.

[0019] 2. The electronic expansion valve of the present utility model, through the combined design of a straight plate and a curved plate, preliminarily separates the fluid and then scatters it along the curved surface. With the mutual cooperation of the spiral channel and the curved plate, the refrigerant flows more smoothly, reducing the turbulence phenomenon caused by the change of the flow channel, making the system operation more stable, and further reducing the noise.

[0020] 3. The valve silencer housing consists of two parts. By cleverly combining the dispersion, gathering, and spiral flow of the refrigerant, it not only improves the noise reduction effect but also enhances the compactness of the overall structure, contributing to the application of the electronic expansion valve in different air conditioning systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a cross-sectional view of the valve silencer adopted in the embodiment of the present utility model;

[0022] Figure 2 is a schematic structural diagram of a perspective of the flow splitting component of the valve silencer adopted in the embodiment of the present utility model;

[0023] Figure 3 is a schematic structural diagram of another perspective of the flow splitting component of the valve silencer adopted in the embodiment of the present utility model;

[0024] Figure 4 is a schematic structural diagram of the interior of the second housing of the valve silencer adopted in the embodiment of the present utility model;

[0025] Figure 5 is a schematic structural diagram of the exterior of the second housing of the valve silencer adopted in the embodiment of the present utility model

[0026] Figure 6 is a partial cross-sectional view of the electronic expansion valve adopted in the embodiment of the present utility model;

[0027] Figure 7 is Figure 6 a partial enlarged view of part A in

[0028] Figure 8 is a schematic diagram of the internal flow direction of the fluid in the electronic expansion valve adopted in the embodiment of the present utility model;

[0029] Figure 9 is a cross-sectional view of the electronic expansion valve adopted in the embodiment of the present utility model;

[0030] Figure 10 is Figure 9 a partial enlarged view of part B in

[0031] Among them, the above-mentioned drawings include the following reference numerals:

[0032] 1. Housing; 11. First inlet; 12. First outlet; 13. First housing; 14. Second housing; 2. Diverting assembly; 21. Guide post; 22. Diverting plate; 221. Straight plate; 222. Arc plate; 23. Diverting channel; 3. Converging channel; 31. Spiral channel; 41. Valve seat; 42. Sound silencing chamber; 43. Rotor; 44. Valve needle; 45. Second inlet; 46. Second outlet; 47. Throttle port. Detailed implementation manners

[0033] In order to enable those skilled in the art to better understand the solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0034] According to an embodiment of the present utility model, a valve silencer is provided. Please refer to Figures 1 to 10 , including: a housing 1, on which a first inlet 11 and a first outlet 12 for fluid to enter and exit are provided; a diverting assembly 2, which is arranged in the housing 1 and located at the first inlet 11. The diverting assembly 2 includes a guide post 21 and a plurality of diverting plates 22 arranged around the guide post 21. The fluid first flows and spreads along the circumferential direction of the guide post 21, and then scatters in all directions through the plurality of diverting plates 22 to disperse and reduce the bubbles in the fluid; a plurality of converging channels 3, each of which is located in the housing 1 and connects the diverting assembly 2 and the first outlet 12. The converging channels 3 are used to converge the dispersed fluid and discharge it through the first outlet 12. Taking the refrigerant as an example of the fluid, through the design of the diverting assembly 2, the refrigerant first flows and spreads along the circumferential direction of the guide post 21, and then scatters in all directions through the plurality of diverting plates 22, effectively dispersing and reducing the bubbles in the fluid, thereby reducing the noise generated when the fluid passes through the valve. The plurality of converging channels 3 re-converge the dispersed fluid, enabling the refrigerant to pass through the throttle air inlet of the valve body orderly, ensuring that the refrigerant is more stable when flowing out of the valve, helping to reduce the impact of the large-flow refrigerant on the valve and the subsequent pipeline, improving the problem of the disordered internal turbulent flow of the refrigerant impacting the valve port to generate air flow and liquid flow noise, and further reducing the noise. The valve silencer in this embodiment solves the technical problem of the large noise generated when the large-flow refrigerant enters and exits the electronic expansion valve in the related art.

[0035] Refer to Figure 1 and Figure 2 , for the valve silencer in this embodiment, the end of the guide post 21 is in a conical shape to guide the circumferential flow of the fluid. The design that the end of the guide post 21 is in a conical shape can more effectively guide the circumferential flow of the refrigerant, enabling the refrigerant to disperse more smoothly.

[0036] Refer to Figure 2 and Figure 3 For the valve silencer of this embodiment, the flow dividing plate 22 includes a straight plate 221 and an arc plate 222. The straight plate 221 is connected to the arc plate 222. The fluid first passes through the straight plate 221 for preliminary separation, and then scatters counterclockwise or clockwise around the circumference along the curved surface of the arc plate 222. The design of the straight plate 221 and the arc plate 222 enables the refrigerant to be preliminarily separated by the straight plate 221 after entering the valve silencer, and then scatter along the curved surface of the arc plate 222, effectively dispersing the bubbles in the refrigerant and reducing the refrigerant impact. The curved surface design of the arc plate 222 not only enables the fluid to be evenly scattered, but also optimizes the flow path of the refrigerant, helping the refrigerant to pass through the valve silencer more smoothly and reducing the fluid resistance. The combined use of the straight plate 221 and the arc plate 222 further enhances the silencing effect of the valve silencer, enabling the refrigerant with a large flow rate to maintain a low noise level when entering and leaving the valve.

[0037] Refer to Figure 1 and Figure 4 For the valve silencer of this embodiment, the housing 1 includes a first housing 13 and a second housing 14. The first housing 13 is connected to the second housing 14. The first housing 13 has a cylindrical structure. The first inlet 11 is provided on the first housing 13. The flow dividing assembly 2 is provided inside the first housing 13. One end of the second housing 14 is connected to the first housing 13, and the other end of the second housing 14 gradually tapers. The first outlet 12 is provided at the end of the second housing 14, so that the inner diameter of the first inlet 11 is larger than the inner diameter of the first outlet 12. A plurality of converging channels 3 are all located on the inner wall of the second housing 14. By dividing the housing into the first housing 13 and the second housing 14, with the first housing 13 having a cylindrical structure, it is convenient to install the flow dividing assembly 2, while the conical structure of the second housing 14 is beneficial for the convergence and discharge of the refrigerant, optimizing the refrigerant path. A plurality of converging channels 3 are all located on the inner wall of the second housing 14, which can re-converge the dispersed refrigerant, reduce the turbulence and impact of the refrigerant during the discharge process, and further improve the silencing effect.

[0038] Refer to Figure 4 For the valve silencer of this embodiment, a plurality of converging channels 3 start from one end close to the first housing 13, spiral along the inner wall of the second housing 14, and gradually converge towards the first outlet 12, forming a spiral channel 31. The plurality of converging channels 3 form the spiral channel 31, enabling the refrigerant to pass through a spiral path before discharge, which helps to reduce the turbulence and bubbles in the refrigerant and enhance the stability of the refrigerant. The spiral channel 31 is provided inside the second housing 14, while the outer surface of the conical second housing 14 is a smooth curved surface. The internal and external structures of the second housing 14 are respectively as Figure 4 and Figure 5As shown. The design of the spiral channel 31 extends the flow path of the refrigerant in the valve silencer, increases the contact time between the refrigerant and the inner wall of the silencer, thereby improving the noise reduction effect.

[0039] Refer to Figure 1 , in the valve silencer of this embodiment, the spiral channel 31 and the curved surface of the arc plate 222 cooperate with each other in the fluid direction, so that after the fluid is scattered along the curved surface of the arc plate 222 in a clockwise or counterclockwise direction, it enters the spiral channel 31 and spirally converges along the inner wall of the second housing 14 to the first outlet 12 in the same direction. The refrigerant is first scattered along the curved surface of the arc plate 222 in a clockwise or counterclockwise direction, and this design enables the refrigerant to be preliminarily adjusted in direction and dispersed before entering the spiral channel 31. Subsequently, the refrigerant spirally converges to the first outlet 12 along the spiral channel 31 in the same direction as the scattering direction of the arc plate 222. This same-direction flow path reduces the turbulence and mutual impact of the refrigerant in the channel, thereby reducing the generation of noise.

[0040] Refer to Figure 2 , in the valve silencer of this embodiment, a plurality of flow dividing plates 22 in the flow dividing assembly 2 form a plurality of flow dividing channels 23 around the guide post 21, and the number of converging channels 3 is N times the number of flow dividing channels 23, where N≥2. A plurality of flow dividing plates 22 in the flow dividing assembly 2 form a plurality of flow dividing channels 23 around the guide post 21, which can effectively disperse the refrigerant into multiple small streams, reduce the refrigerant impact, and reduce noise. The number of converging channels 3 is N times the number of flow dividing channels 23, where N≥2. Preferably, the number of converging channels 3 is 2 to 3 times the number of flow dividing channels 23. This design can ensure that the dispersed refrigerant can be re-converged more efficiently, reduce refrigerant loss, and ensure the stability of the refrigerant.

[0041] Refer to Figure 6 , Figure 7 , Figure 8 and Figure 9 , the electronic expansion valve of this embodiment includes a valve seat 41 and a silencing cavity 42. The silencing cavity 42 is arranged in the valve seat 41, and the above-mentioned valve silencer is installed in the silencing cavity 42. By installing the above-mentioned valve silencer in the silencing cavity 42 in the valve seat 41, the refrigerant flowing through the electronic expansion valve can be effectively dispersed and converged, reducing the refrigerant impact and turbulence, thereby significantly reducing noise and improving the user experience.

[0042] Refer to Figure 9 and Figure 10, the electronic expansion valve of this embodiment further includes a rotor 43 and a valve needle 44. The rotor 43 is rotatable relative to the valve seat 41. The valve seat 41 is provided with a second inlet 45, a second outlet 46, and a throttle port 47 for controlling the fluid flow rate by the valve needle 44. The fluid enters from the second inlet 45, flows through the first inlet 11, the first outlet 12, and the throttle port 47 in sequence, and finally discharges from the second outlet 46. Through the rotatable design of the rotor 43 relative to the valve seat 41 and the control of the throttle port 47 by the valve needle 44, the precise adjustment of the refrigerant flow rate is achieved, and the flexibility of flow control is improved. The refrigerant enters from the second inlet 45, flows through the first inlet 11, the first outlet 12, and the throttle port 47 in sequence, and finally discharges from the second outlet 46. This design optimizes the refrigerant flow path, reduces the resistance loss of the refrigerant, and improves the noise reduction effect of the electronic expansion valve.

[0043] The air-conditioning system of this embodiment includes the electronic expansion valve described above. The air-conditioning system adopts the above-mentioned electronic expansion valve. Through the design of the valve silencer inside the electronic expansion valve, it can effectively reduce the noise generated during the flow of the refrigerant and improve the user experience. By measures such as reducing noise and improving the flow control accuracy, the air-conditioning system of this embodiment can provide a more comfortable and quiet use environment for users.

[0044] The technical solution of the present utility model is based on solving the problem of liquid flow noise caused by abnormal refrigerant flow in the electronic expansion valve. In the air-conditioning system, there are two-phase refrigerants and medium fluids mixed with lubricating oil, etc. During the throttling operation of the electronic expansion valve, complex physical state changes occur. Due to the sudden change of the flow path, the refrigerant impacts the throttle port disorderly to form a turbulent flow, and at the same time, a large number of bubbles are generated. The bubbles collapse and break under high pressure to generate liquid flow noise. In the optimized structure of the electronic expansion valve, a contraction type transition noise reduction and silencing cavity 42 is provided at the inlet. Inside the cavity, there is a "rotating impeller channel", that is, a flow splitting channel 23 separated by multiple groups of straight plates 221 and arc plates 222 arranged at intervals, which guides the high-speed refrigerant to perform a rotary circumferential movement in the flow splitting channel 23, and then enters the throttle port 47 along the spiral groove on the conical surface of the second housing 14, solving the problem of liquid cooling noise caused by the disorderly impact of the high-speed turbulent flow on the valve body.

[0045] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0046] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and will not be elaborated here.

[0047] The serial numbers of the above embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0048] In the above embodiments of the present application, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0049] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A valve silencer, characterized in that, Comprising: A housing (1) provided with a first inlet (11) and a first outlet (12) for fluid to enter and exit. A flow splitting assembly (2) disposed within the housing (1) and located at the first inlet (11). The flow splitting assembly (2) includes a guiding column (21) and a plurality of flow splitting plates (22) arranged around the guiding column (21). The fluid first flows and spreads circumferentially along the guiding column (21), and then scatters in all directions through the plurality of flow splitting plates (22) to disperse and reduce the bubbles in the fluid. A plurality of converging channels (3), each of which is located in the housing (1) and connects the flow splitting assembly (2) to the first outlet (12). The converging channels (3) are used to converge the dispersed fluid and discharge it through the first outlet (12).

2. The valve silencer according to claim 1, characterized in that, The end of the guiding column (21) is conical to guide the circumferential flow of the fluid.

3. The valve silencer according to claim 1, wherein, The flow splitting plate (22) includes a straight plate (221) and an arc plate (222). The straight plate (221) is connected to the arc plate (222). The fluid is first preliminarily separated by the straight plate (221), and then scatters in all directions counterclockwise or clockwise along the curved surface of the arc plate (222).

4. The valve silencer according to claim 3, characterized in that, The housing (1) includes a first housing (13) and a second housing (14). The first housing (13) is connected to the second housing (14). The first housing (13) has a cylindrical structure. The first inlet (11) is provided on the first housing (13). The flow splitting assembly (2) is disposed within the first housing (13). One end of the second housing (14) is connected to the first housing (13), and the other end of the second housing (14) gradually tapers. The first outlet (12) is provided at the end of the second housing (14), so that the inner diameter of the first inlet (11) is greater than the inner diameter of the first outlet (12). The plurality of converging channels (3) are all located on the inner wall of the second housing (14).

5. The valve silencer according to claim 4, characterized in that, The plurality of converging channels (3) start from one end close to the first housing (13), spiral along the inner wall of the second housing (14), and gradually converge towards the first outlet (12) to form a spiral channel (31).

6. The valve silencer according to claim 5, characterized in that, The spiral channel (31) cooperates with the curved surface of the arc plate (222) in the fluid direction, so that after the fluid scatters in a clockwise or counterclockwise direction along the curved surface of the arc plate (222), it enters the spiral channel (31) and spirally converges along the inner wall of the second housing (14) to the first outlet (12) in the same direction.

7. The valve silencer according to claim 1, characterized in that, The plurality of flow splitting plates (22) in the flow splitting assembly (2) form a plurality of flow splitting channels (23) around the guiding column (21). The number of the converging channels (3) is N times the number of the flow splitting channels (23), where N≥2.

8. An electronic expansion valve, characterized in that, It includes a valve seat (41) and a silencing cavity (42). The silencing cavity (42) is arranged inside the valve seat (41), and a valve silencer as described in any one of claims 1-7 is installed inside the silencing cavity (42).

9. The electronic expansion valve according to claim 8, wherein, It further includes a rotor (43) and a valve needle (44). The rotor (43) is rotatable relative to the valve seat (41). A second inlet (45), a second outlet (46), and a throttle port (47) for controlling the fluid flow rate by the valve needle (44) are arranged on the valve seat (41). The fluid enters from the second inlet (45), successively flows through the first inlet (11), the first outlet (12), and the throttle port (47), and finally discharges from the second outlet (46).

10. An air conditioning system, characterized in that, It includes an electronic expansion valve as described in claim 8 or 9.

Images