Throttle valve

Abstract

The utility model provides a throttle valve which comprises a body part provided with a first flow channel, a valve port and a second flow channel which are sequentially communicated in the flowing direction of fluid. The valve element is movably arranged in the first flow channel, the first end of the valve element is used for blocking or opening the valve port, the valve element is provided with a throttling channel, and the throttling channel penetrates through the valve element in the flowing direction of fluid; when the valve element blocks the valve port, one end of the throttling channel communicates with the valve port, and the other end of the throttling channel communicates with the first flow channel. The second flow channel comprises a confluence section, a flow guide section and a liquid outlet flow channel which are communicated in sequence, the confluence section is communicated with the valve port, the flow guide section comprises at least two flow dividing cavities, and the flow dividing cavities are communicated with the confluence section and the liquid outlet flow channel. According to the scheme, the problem that in the prior art, a throttling valve is large in noise can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a throttle valve. Background Art

[0002] A throttle valve is a fluid control valve that is widely used in refrigeration equipment such as air conditioners and refrigerators.

[0003] A throttle valve typically includes a body and a valve core. The body has a first flow channel, a valve port, and a second flow channel, which are sequentially connected along the flow direction of the fluid. The valve core is movably disposed within the first flow channel. The first end of the valve core is used to block or open the valve port. The valve core is provided with a throttling channel that passes through the valve core in the direction of its movement. When the valve core blocks the valve port, fluid flows from the throttling channel into the second flow channel, achieving throttling.

[0004] However, when the fluid flows from the throttling channel with a smaller flow area to the second flow channel with a larger flow area, the uniformity of the fluid flow deteriorates due to the sudden change in the flow area, which can easily cause turbulence and generate noise, affecting the user experience. Utility Model Content

[0005] The utility model provides a throttle valve to solve the problem of high noise of the throttle valve in the prior art.

[0006] The utility model provides a throttle valve, which includes: a main body, which is provided with a first flow channel, a valve port and a second flow channel that are connected in sequence along the flow direction of the fluid; a valve core, which is movably arranged in the first flow channel, and the first end of the valve core is used to block or open the valve port, and the valve core is provided with a throttling channel, and the throttling channel passes through the valve core along the flow direction of the fluid; when the valve core blocks the valve port, one end of the throttling channel is connected to the valve port, and the other end of the throttling channel is connected to the first flow channel; the second flow channel includes a confluence section, a guide section and a liquid outlet flow channel that are connected in sequence, and the confluence section is connected to the valve port, wherein the guide section includes at least two diversion chambers, and the diversion chambers are both connected to the confluence section and the liquid outlet flow channel.

[0007] Furthermore, a projection of the throttling channel on the flow guiding section is located in one of the diversion cavities.

[0008] Furthermore, the diversion cavity includes a central diversion cavity and at least two peripheral diversion cavities, and the peripheral diversion cavities are arranged on the periphery of the central diversion cavity.

[0009] Furthermore, at least two peripheral diversion chambers are provided, and the peripheral diversion chambers are provided around the periphery of the central diversion chamber.

[0010] Furthermore, the diversion chambers are arranged in the flow guide section along a direction perpendicular to the flow direction.

[0011] Furthermore, when the valve core blocks the valve port, the distance between the throttling channel and the guide section along the direction from the valve port to the guide section is set between 0.5 mm and 0.7 mm.

[0012] Furthermore, the throttle valve further includes: a flow guide portion, which is arranged in the flow guide section, extends along the flow direction, is provided with at least one flow guide portion, and cooperates with the flow guide section to form a diversion chamber.

[0013] Furthermore, along the direction from the converging section to the liquid outlet channel, the thickness of the guide portion is the same or gradually increases.

[0014] Furthermore, the main body includes: a valve tube; a valve seat, which is arranged in the valve tube, and the valve port and the confluence section are arranged on the valve seat; wherein the guide section is located in the valve seat or in the valve tube.

[0015] Furthermore, the valve seat includes a seat body and a guide tube connected in sequence along the axial direction. The seat body is sealed with the valve tube. There is a gap between the guide tube and the valve tube. The end where the seat body and the guide tube are connected forms a valve port. A flow hole is provided on the side wall of the guide tube. The flow hole is connected to the gap. The valve core is movably arranged in the guide tube, and the guide section is formed in the seat body.

[0016] Furthermore, along the axial direction of the seat body, the length of the guide section is set between 40% and 80% of the length of the seat body.

[0017] By applying the technical solution of the present invention, when fluid flows from the first flow channel to the second flow channel, the valve core is in the throttling position under the action of the fluid, the valve core of the throttling valve blocks the valve port, and the fluid flows from the throttling channel through the valve port and sequentially through the confluence section, the guide section, and the liquid outlet channel. Because the guide section includes multiple diversion chambers, and the two ends of each diversion chamber are respectively connected to the confluence section and the liquid outlet channel, the multiple diversion chambers guide and divert the fluid as it passes through the multiple diversion chambers, thereby improving the smoothness and uniformity of the fluid flow process, reducing the turbulence of the fluid, and reducing the noise of the throttle valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 The structure diagram of the first throttle valve provided by the embodiment of the utility model is shown;

[0020] Figure 2 A cross-sectional view showing the cooperation between the valve seat and the valve core of the first throttle valve provided by an embodiment of the utility model is shown;

[0021] Figure 3 A top view of a valve seat of a first throttle valve provided by an embodiment of the present utility model is shown;

[0022] Figure 4 A cross-sectional view showing the cooperation between the valve seat and the valve core of the second throttle valve provided by an embodiment of the present utility model is shown;

[0023] Figure 5 A top view of a valve seat of a second throttle valve provided in an embodiment of the present utility model is shown.

[0024] Figure 6 A cross-sectional view showing the cooperation between the valve seat and the valve core of the third throttle valve provided by an embodiment of the present utility model is shown;

[0025] Figure 7 A schematic diagram showing the dimensional relationship between the valve seat and the flow guide portion of the first throttle valve provided by an embodiment of the utility model is shown.

[0026] The above drawings include the following reference numerals:

[0027] 10. Body part;

[0028] 101, first flow channel; 102, valve port; 103, second flow channel; 104, interval;

[0029] 1031, confluence section; 1032, diversion section; 1033, liquid outlet channel;

[0030] 10321, central shunt cavity; 10322, peripheral shunt cavity;

[0031] 10323, first diversion chamber; 10324, second diversion chamber; 10325, third diversion chamber;

[0032] 11. Valve tube; 12. Valve seat; 121. Seat body; 122. Guide tube; 1221. Flow hole;

[0033] 20. Valve core; 201. Throttle channel;

[0034] 30. Diversion part. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] like Figures 1 to 3 As shown, the embodiment of the present invention provides a throttle valve, which includes a body 10 and a valve core 20. The body 10 is provided with a first flow channel 101, a valve port 102, and a second flow channel 103 that are sequentially connected along the flow direction of the fluid; the valve core 20 is movably arranged in the first flow channel 101, and the first end of the valve core 20 is used to block or open the valve port 102. The valve core 20 is provided with a throttle channel 201, and the throttle channel 201 passes through the valve core 20 along the flow direction of the fluid; when the valve core 20 blocks the valve port 102, one end of the throttle channel 201 is connected to the valve port 103. 2, the other end of the throttling channel 201 is connected to the first flow channel 101; the second flow channel 103 includes a converging section 1031, a guide section 1032 and a liquid outlet flow channel 1033 which are connected in sequence, the converging section 1031 is connected to the valve port 102, wherein the guide section 1032 includes a plurality of diversion cavities, each of which is connected to the converging section 1031 and the liquid outlet flow channel 1033, that is, the two ends of each diversion cavity are respectively connected to the converging section 1031 and the liquid outlet flow channel 1033.

[0037] It can be understood that the projection of the throttling channel 201 is located inside the valve port 102, and the valve core 20 has a throttling position. When the valve core 20 is in the throttling position, the valve core 20 blocks the valve port 102, and the throttling channel 201 is directly connected to the valve port 102, and the throttling channel 201 is connected to the confluence section 1031 through the valve port 102; when the valve core 20 is in the non-throttling position, the throttling channel 201 is not directly connected to the valve port 102, and the first flow channel 101 is connected to the valve port 102.

[0038] By applying the technical solution of the present invention, when the fluid flows from the first flow channel 101 to the second flow channel 103, the valve core 20 is in the throttling position under the action of the fluid, and the valve core 20 of the throttle valve blocks the valve port 102. The fluid flows from the throttle channel 201 through the valve port 102 and sequentially through the confluence section 1031, the guide section 1032, and the liquid outlet channel 1033. Because the guide section 1032 includes multiple diversion cavities, and the two ends of each diversion cavity are respectively connected to the confluence section and the liquid outlet channel, the multiple diversion cavities guide and divert the fluid when the fluid passes through the multiple diversion cavities, thereby improving the smoothness and uniformity of the fluid flow process, reducing the turbulence of the fluid, and reducing the noise of the throttle valve.

[0039] In the embodiment of this solution, the projection of the throttle channel 201 on the guide section 1032 is located in one of the diversion chambers. This arrangement can reduce the direct impact of the fluid on the throttle valve and further reduce the noise of the throttle valve.

[0040] like Figures 1 to 3As shown, in other embodiments of this solution, multiple diversion cavities are arranged perpendicular to the flow direction of the fluid in the guide section 1032. This arrangement can help achieve a uniform distribution of the flow field, reduce the possibility of vortex formation in the fluid in the guide section 1032, and improve the stability of the entire flow process.

[0041] This embodiment illustrates an example in which three diverter cavities are arranged perpendicular to the fluid flow direction within the flow guide section 1032. The three diverter cavities are a first diverter cavity 10323, a second diverter cavity 10324, and a third diverter cavity 10325. The first diverter cavity 10323 and the third diverter cavity 10325 are symmetrically arranged on either side of the second diverter cavity 10324. The projection of the throttling channel 201 on the flow guide section 1032 is located within the second diverter cavity 10324.

[0042] Along the direction perpendicular to the flow direction of the fluid, the cross-sectional profile of the second diverter cavity 10324 includes two first parallel straight line segments and a first arc segment arranged opposite to each other; the cross-sectional profile of the first diverter cavity 10323 includes a second straight line segment and a second arc segment, and the second straight line segment is parallel to the first straight line segment. In some embodiments of the present solution, the diverter cavity includes a central diverter cavity 10321 and a peripheral diverter cavity 10322, and the peripheral diverter cavity 10322 is arranged on the periphery of the central diverter cavity 10321, and the projection of the throttling channel 201 is located within the central diverter cavity 10321. Such an arrangement can ensure the diversion effect of the central diverter cavity 10321 and the peripheral diverter cavity 10322 on the fluid, and can reduce the possibility of the fluid directly impacting the inner wall of the guide section 1032.

[0043] like Figure 4 and Figure 5 As shown, in some other embodiments of the present solution, the diversion cavity includes a central diversion cavity 10321 and a peripheral diversion cavity 10322 , and the peripheral diversion cavity 10322 is arranged on the periphery of the central diversion cavity 10321 .

[0044] In some embodiments of the present solution, a peripheral diversion cavity 10322 is provided, and the peripheral diversion cavity 10322 is annular.

[0045] In other embodiments of the present solution, at least two peripheral diversion chambers 10322 are located on the periphery of the central diversion chamber 10321 along the circumferential direction surrounding the flow direction.

[0046] Specifically, the diverter chamber includes a central diverter chamber 10321 and at least two peripheral diverter chambers 10322. The projection of the throttling channel 201 on the guide section 1032 is located within the central diverter chamber 10321, and the multiple peripheral diverter chambers 10322 are symmetrically distributed relative to the central diverter chamber 10321. The peripheral diverter chambers 10322 are symmetrically distributed relative to the central diverter chamber 10321. Such a configuration helps achieve symmetry and uniformity in fluid flow, optimizes the distribution of the flow field, more effectively separates the fluid, reduces the generation of eddies and turbulence, and reduces system vibration and noise caused by asymmetric flow. In addition, the symmetrical distribution of the peripheral diverter chambers 10322 helps make the remixing process of the fluid after diversion more uniform, further reducing the noise of the throttle valve.

[0047] like Figure 4 and Figure 5 As shown, this solution is illustrated by an example in which four peripheral diversion chambers 10322 surround a central diversion chamber 10321. In the direction perpendicular to the center line of the central diversion chamber 10321, the cross-sectional profile of the central diversion chamber 10321 is circular, and the cross-sectional profile of the peripheral diversion chamber 10322 is fan-shaped.

[0048] Furthermore, the first flow channel 101, valve port 102, confluence section 1031, outlet flow channel 1033, and throttling channel 201 are coaxially circular in cross-section perpendicular to the flow direction of the fluid. In the flow direction of the fluid, the centerline of the central diversion cavity 10321 coincides with the centerline of the throttling channel 201.

[0049] Furthermore, when the valve core 20 seals the valve port 102, the distance a between the throttling channel 201 and the guide section 1032 along the direction from the valve port 102 to the guide section 1032 is set to be between 0.5 mm and 0.7 mm. This arrangement can buffer the fluid flowing out of the throttling channel 201, ensuring that the fluid can be redistributed within the diversion chamber. Setting a between 0.5 mm and 0.7 mm can optimize the fluid's dynamic performance, ensuring that the fluid has a suitable velocity distribution and flow characteristics before entering the guide section 1032.

[0050] Wherein, a can be set to 0.5mm, 0.55mm, 0.6mm, 0.65mm or 0.7mm, etc. In the embodiment of this solution, the length of a is set to 0.64mm.

[0051] like Figure 6 and Figure 7Specifically, the throttle valve further includes a guide portion 30 disposed within the guide section 1032. The guide portion 30 extends along the flow direction and cooperates with the guide section 1032 to form a diversion chamber. The guide portion 30 extends along the flow direction, helping to more effectively guide the fluid flow, reducing direct impact of the fluid on the guide portion 30, and reducing noise and vibration generated by the impact.

[0052] Furthermore, the side of the guide portion 30 facing the converging section 1031 is a circular arc surface that protrudes toward one end of the converging section 1031. The circular arc surface can smoothly guide the fluid flow, reduce direct impact between the fluid and the guide portion surface, reduce the local resistance caused by such impact, improve the smoothness of fluid flow, reduce turbulence, and reduce noise.

[0053] like Figure 7 As described above, in the embodiment of this solution, the guide portion 30 has a uniform thickness along the direction from the confluence section 1031 to the liquid outlet channel 1033. The uniform thickness of the guide portion 30 helps maintain uniform fluid flow characteristics, ensuring a consistent flow resistance and flow velocity distribution when the fluid passes through the guide portion, thereby reducing fluctuations and turbulence during the flow process.

[0054] Specifically, in the embodiment of this solution, the guide portion 30 is a guide plate.

[0055] like Figure 6 As shown, in other embodiments of this solution, the thickness of the guide portion 30 gradually increases along the direction from the converging section 1031 to the liquid outlet channel 1033. As the fluid flows from the converging section 1031 to the diversion cavity, the thickness of the guide portion 30 gradually increases, which can reduce the possibility of fluid separation on the surface of the guide portion 30, thereby reducing resistance.

[0056] In this solution, the thickness h1 of the guide portion 30 at one end close to the converging section 1031 is 0.15 mm to 0.25 mm, and the thickness h2 of the guide portion 30 at one end away from the converging section 1031 is 0.25 mm to 0.35 mm.

[0057] The thickness of the guide portion 30 at the end close to the confluence section 1031 can be set to 0.15 mm, 0.25 mm, or 0.2 mm, etc.; the thickness of the guide portion 30 at the end away from the confluence section 1031 can be set to 0.25 mm, 0.3 mm, or 0.35 mm, etc. As long as the thickness of the guide portion 30 gradually increases from the confluence section 1031 to the liquid outlet channel 1033, it is sufficient.

[0058] In the embodiment of this solution, the guide portion 30 and the main body portion 10 are welded.

[0059] In other embodiments of the present solution, the guide portion 30 and the main body 10 are integrally formed.

[0060] like Figure 1 As shown, specifically, the main body 10 includes a valve tube 11 and a valve seat 12 that are separately arranged. The valve seat 12 is arranged in the valve tube 11 , and the valve port 102 and the confluence section 1031 are arranged on the valve seat 12 .

[0061] In some embodiments of the present solution, the flow guide section 1032 is located inside the valve tube 11 .

[0062] In the embodiment of this solution, the flow guide section 1032 is located in the valve seat 12. The valve port 102 and the confluence section 1031 are both provided on the valve seat 12, which can facilitate control of the length of the confluence section 1031.

[0063] Specifically, the valve seat 12 includes a seat body 121 and a guide tube 122, which are connected in sequence along the axial direction. The seat body 121 is sealed with the valve tube 11. An annular gap 104 is provided between the guide tube 122 and the side wall of the valve tube 11. The end where the seat body 121 and the guide tube 122 are connected forms a valve port 102. A flow hole 1221 is provided on the side wall of the guide tube 122, which is connected to the gap 104. The valve core 20 is movably disposed within the guide tube 122, and a guide section 1032 is formed within the seat body 121. The sealed fit between the seat body 121 and the valve tube 11 prevents fluid leakage. The guide tube 122 provides precise guidance for the movement of the valve core 20, ensuring that the valve core 20 remains stable and centered during movement, thereby improving the adjustment accuracy and response speed of the throttle valve.

[0064] Specifically, the inner diameter of the guide tube 122 is larger than that of the seat body 121, and the valve port 102 is formed at the location where the inner sidewall of the guide tube 122 connects with the inner sidewall of the seat body 121. This arrangement ensures that when the valve core 20 moves to the valve port 102, the end surface of the valve core 20 near the valve port 102 abuts against the stepped ring formed between the guide tube 122 and the seat body 121, ensuring the stability of the valve core 20 in the throttling position.

[0065] Furthermore, the end of the guide tube 122, away from the seat body 121, is bent inward to form a stopper structure, which abuts against the end of the valve core 20, away from the valve port 102. This arrangement prevents the valve core from excessive movement or dislodging within the guide tube 122, ensuring that the valve core is always in the correct position for fluid regulation. Furthermore, this arrangement is simple in structure and facilitates assembly of the valve seat 12 and valve core 20.

[0066] Furthermore, along the axis of the base 121, the length of the guide portion 30 is set between 40% and 80% of the length of the base 121. When the length of the guide section 1032 is less than 40% of the length of the base 121, the confluence section 1031 can be ensured to have an appropriate length. However, if the length of the guide portion 30 is too short, the noise reduction effect is low. When the length of the guide portion 30 is greater than 80% of the length of the base 121, the guide portion 30 is too long, and the confluence section 1031 may be short, or the end of the guide portion 30 may protrude from the base 121 away from the confluence section 1031. In summary, in this solution, setting the length of the guide portion 30 between 40% and 80% of the length of the base 121 ensures both the confluence section 1031 and the guide section 1032 have an appropriate length, while also ensuring a good noise reduction effect.

[0067] The length of the air guide portion 30 can be set to 40%, 50%, 60%, 70% or 80% of the length of the seat body 121.

[0068] like Figure 7 As shown, it can be understood that, in this solution, the lengths of the plurality of guide portions 30 are the same, and the end surfaces of the plurality of guide portions 30 facing the valve port 102 are flush.

[0069] The length a of the converging section 1031 is the shortest distance between the end surface of the flow guide portion 30 facing the valve port 102 and the valve port 102 .

[0070] The length b of the flow guide portion 30 is the maximum distance between two end surfaces of the flow guide portion 30 along the flow direction of the fluid.

[0071] The length c of the seat body 121 is the length of the internal channel of the seat body 121 along the axial direction of the seat body 121 .

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0074] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0075] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0076] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A throttle valve, characterized in that: The throttle valve comprises: The main body (10) is provided with a first flow channel (101), a valve port (102) and a second flow channel (103) which are sequentially connected along the flow direction of the fluid; A valve core (20) is movably arranged in the first flow channel (101), a first end of the valve core (20) is used to block or open the valve port (102), and the valve core (20) is provided with a throttling channel (201), and the throttling channel (201) passes through the valve core (20) along the flow direction of the fluid; when the valve core (20) blocks the valve port (102), one end of the throttling channel (201) is communicated with the valve port (102), and the other end of the throttling channel (201) is communicated with the first flow channel (101); The second flow channel (103) comprises a confluence section (1031), a guide section (1032) and a liquid outlet flow channel (1033) which are connected in sequence, wherein the confluence section (1031) is connected to the valve port (102), wherein the guide section (1032) comprises at least two diversion chambers, and each of the diversion chambers is connected to the confluence section (1031) and the liquid outlet flow channel (1033).

2. The throttle valve according to claim 1, characterized in that The projection of the throttling channel (201) on the guide section (1032) is located in one of the diversion cavities.

3. The throttle valve according to claim 1, characterized in that The diversion cavity includes a central diversion cavity (10321) and a peripheral diversion cavity (10322), and the peripheral diversion cavity (10322) is arranged on the periphery of the central diversion cavity (10321).

4. The throttle valve according to claim 3, characterized in that At least two peripheral diversion chambers (10322) are provided, and the peripheral diversion chambers (10322) are provided around the periphery of the central diversion chamber (10321).

5. The throttle valve according to claim 1, characterized in that The diversion chamber is arranged in the guide section (1032) along a direction perpendicular to the flow direction.

6. The throttle valve according to claim 1, characterized in that When the valve core (20) blocks the valve port (102), the distance between the throttling channel (201) and the guide section (1032) along the direction from the valve port (102) to the guide section (1032) is set between 0.5 mm and 0.7 mm.

7. The throttle valve according to any one of claims 1 to 6, characterized in that The throttle valve further comprises: A flow guide portion (30) is arranged in the flow guide section (1032), the flow guide portion (30) extends along the flow direction, and the flow guide portion (30) cooperates with the flow guide section (1032) to form the diversion cavity.

8. The throttle valve according to claim 7, characterized in that Along the direction from the confluence section (1031) to the liquid outlet channel (1033), the thickness of the guide portion (30) is the same or gradually increases.

9. The throttle valve according to any one of claims 1 to 6, characterized in that The main body (10) comprises: Valve pipe (11); A valve seat (12) is arranged in the valve tube (11), and the valve port (102) and the confluence section (1031) are arranged on the valve seat (12); Wherein, the guide section (1032) is located in the valve seat (12) or in the valve tube (11).

10. The throttle valve according to claim 9, characterized in that The valve seat (12) includes a seat body (121) and a guide tube (122) connected in sequence along the axial direction, the seat body (121) is sealed with the valve tube (11), a gap (104) is provided between the guide tube (122) and the valve tube (11), one end of the seat body (121) connected to the guide tube (122) forms the valve port (102), a flow hole (1221) is provided on the side wall of the guide tube (122), the flow hole (1221) is connected with the gap (104), the valve core (20) is movably provided in the guide tube (122), and the guide section (1032) is formed in the seat body (121).

11. The throttle valve according to claim 10, characterized in that Along the axial direction of the seat body (121), the length of the guide section (1032) is set between 40% and 80% of the length of the seat body (121).

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