Silicone oil fan clutch

Abstract

This utility model discloses a silicone oil fan clutch. The silicone oil fan clutch includes a clutch body and a flow guiding structure. The clutch body includes an end cover and a temperature sensing element connected to the end cover. The flow guiding device includes a frame and blades. The frame has a temperature sensing channel, surrounds the temperature sensing element, and is connected to the end cover. The blades are located in the temperature sensing channel and are connected to the frame. This silicone oil fan clutch has accurate temperature sensing, low risk of dynamic balance vibration and abnormal noise, reliable structure, and is not easily damaged.

Description

Technical Field

[0001] This utility model belongs to the field of clutch technology, and in particular relates to a silicone oil fan clutch. Background Technology

[0002] With the widespread use of energy-saving technologies, the requirements for energy saving in automobile engines are becoming increasingly stringent. Since the fan is a consumer of engine power, in order to reduce fan power consumption, reduce noise and wear, prevent engine overcooling, reduce pollution, and save fuel, fan clutches are often used to control the operation of the fan.

[0003] Silicone oil fan clutches are a common type of fan clutch. Their oil circuit design typically employs a valve plate and oil inlet connection. The working principle is as follows: a bimetallic temperature sensor detects temperature, causing the main shaft to rotate. This causes the valve plate to rotate away from the oil inlet, injecting oil into the working chamber and driving the fan to rotate with the drive shaft. Conversely, the valve plate rotates back, closing the oil inlet. However, this type of clutch suffers from inaccurate temperature sensing.

[0004] Existing technology addresses the aforementioned problems by using a temperature-sensing coil radially positioned on the end cover along the drive shaft and a drainage fan coaxially positioned on the side of the end cover away from the drive plate. However, moving the temperature-sensing coil to one side of the clutch end cover results in uneven distribution of the end cover heat sinks, low heat dissipation efficiency, and risks of vibration or abnormal noise during high-speed rotation of the drainage fan, as well as issues such as the drainage fan blades being prone to collisions. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the related art.

[0006] This utility model provides a silicone oil fan clutch, comprising: Clutch body, the clutch body including an end cover and a temperature sensing element connected to the end cover; and The flow guiding device includes: A frame having a temperature-sensing channel, the frame surrounding the temperature-sensing element, and the frame connected to the end cap; and The blade is located in the temperature sensing channel and is connected to the frame.

[0007] This utility model discloses a silicone oil fan clutch comprising a clutch body and a flow guiding device. The frame of the flow guiding device is connected to the end cover of the clutch body. When the end cover of the clutch body rotates at low speed, the end cover drives the frame connected to it to rotate, and the blades connected to the frame rotate together with the frame, guiding the airflow along the temperature sensing channel to the temperature sensing element. On the one hand, this silicone oil fan clutch has accurate temperature sensing, enabling it to more precisely control the speed of the radiator fan, improve the cooling effect of the water tank, and thus stabilize the engine's operating conditions, reduce energy consumption, improve energy utilization, and extend engine life. On the other hand, this silicone oil fan clutch has low risk of dynamic balance vibration and abnormal noise, reliable structure, and is not easily damaged.

[0008] In some embodiments, a plurality of blades are provided, and the plurality of blades are evenly spaced along the circumference of the frame.

[0009] By setting multiple blades evenly spaced circumferentially along the frame, the flow guiding effect of the flow guiding device is improved, thereby improving the temperature sensing accuracy of the silicone oil fan clutch.

[0010] In some embodiments, the frame includes an inner frame and an outer frame, the outer frame surrounding the temperature sensing element, the outer frame being connected to the end cap, the outer frame defining the temperature sensing channel, the inner frame being located in the temperature sensing channel, one end of the blade being connected to the inner frame, and the other end of the blade being connected to the outer frame.

[0011] By setting up a frame including an inner frame and an outer frame, with one end of the blade connected to the inner frame and the other end connected to the outer frame, the risk of dynamic balance vibration and abnormal noise of the flow guide device is reduced, and the structure is more reliable.

[0012] In some embodiments, the width of the blade gradually increases along the direction from the inner frame to the outer frame.

[0013] By setting the blade width to gradually increase along the direction from the inner frame to the outer frame, on the one hand, the connection between the blade and the frame is more solid and the blade strength is higher; on the other hand, the sweeping area of ​​the blade is larger and the airflow guiding effect is better.

[0014] In some embodiments, the outer frame has a protrusion at one end near the clutch body, and the protrusion is connected to the end cover.

[0015] By setting a protrusion at one end of the outer frame near the clutch body, it is convenient to connect the outer frame and the end cover using the protrusion.

[0016] In some embodiments, a plurality of protrusions are provided, and the plurality of protrusions are evenly spaced along the circumference of the outer frame, with two adjacent protrusions defining a ventilation space.

[0017] By setting multiple protrusions evenly spaced along the circumference of the outer frame, on the one hand, the connection points between the outer frame and the end cover can be increased, thus increasing the connection strength between the outer frame and the end cover; on the other hand, a ventilation space can be formed between two adjacent protrusions, allowing gas to flow out from the ventilation space and preventing damage to the temperature sensing element.

[0018] In some embodiments, the protrusion and the outer frame are an integral structure.

[0019] By integrating the protrusions and the outer frame into a single structure, the process is simple and there is no risk of loose connections.

[0020] In some embodiments, the inner frame has weight-reducing holes extending axially thereon.

[0021] By setting weight-reducing holes extending axially along the inner frame, the overall weight of the flow guide device is reduced, improving the reliability of the silicone oil fan clutch.

[0022] In some embodiments, the cross-sectional shape of the outer frame is annular along the axial direction of the outer frame.

[0023] By setting the cross-sectional shape of the outer frame to be annular along its axial direction, airflow resistance is minimized, noise is reduced, and space containment is improved.

[0024] In some embodiments, the frame and the blade are an integral structure.

[0025] By making the frame and blades a single integrated structure, the process is simple and there is no risk of loose connections. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a silicone oil fan clutch provided in one embodiment of the present invention; Figure 2 This is a schematic diagram of the flow guiding device provided in one embodiment of the present invention.

[0028] Figure label: 1. Clutch body; 11. End cap; 12. Temperature sensing element; 13. Heat sink; 2. Flow guiding device; 21. Frame; 211. Inner frame; 2111. Weight reduction hole; 212. Outer frame; 213. Temperature sensing channel; 22. Leaves; 23. Protrusion; 231. Ventilation space. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0030] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0031] A silicone oil fan clutch includes a clutch body and a flow guiding device. The clutch body includes an end cover and a temperature sensing element connected to the end cover. The flow guiding device includes a frame and blades. The frame has a temperature sensing channel, surrounds the temperature sensing element, and is connected to the end cover. The blades are located in the temperature sensing channel and are connected to the frame.

[0032] This utility model discloses a silicone oil fan clutch comprising a clutch body and a flow guiding device. The frame of the flow guiding device is connected to the end cover of the clutch body. When the end cover of the clutch body rotates at low speed, the end cover drives the frame connected to it to rotate, and the blades connected to the frame rotate together with the frame, guiding the airflow along the temperature sensing channel to the temperature sensing element. On the one hand, this silicone oil fan clutch has accurate temperature sensing, enabling it to more precisely control the speed of the radiator fan, improve the cooling effect of the water tank, and thus stabilize the engine's operating conditions, reduce energy consumption, improve energy utilization, and extend engine life. On the other hand, this silicone oil fan clutch has low risk of dynamic balance vibration and abnormal noise, reliable structure, and is not easily damaged.

[0033] like Figure 1 and Figure 2 As shown, the silicone oil fan clutch includes a clutch body 1 and a flow guiding device 2. The flow guiding device 2 includes a frame 21 and blades 22. The clutch body 1 includes an end cover 11 and a temperature sensing element 12. The temperature sensing element 12 is connected to the end cover 11. The frame 21 has a temperature sensing channel 213. The frame 21 surrounds the temperature sensing element 12. The frame 21 is connected to the end cover 11. The blades 22 are located in the temperature sensing channel 213. The blades 22 are connected to the frame 21. When the end cover 11 of the clutch body 1 rotates at low speed, the end cover 11 will drive the frame 21 connected to it to rotate, and the blades 22 connected to the frame 21 will rotate together with the frame 21, guiding the airflow along the temperature sensing channel 213 to the temperature sensing element 12.

[0034] Optionally, the temperature sensing element 12 is a bidirectional metal sheet temperature sensing coil.

[0035] In some embodiments, the temperature sensing element 12 is disposed in the middle of the end cover 11. The clutch body 1 also includes a heat sink 13. The heat sink 13 is connected to the end cover 11. The heat sink 13 surrounds the temperature sensing element 12. This arrangement ensures that the heat sink 13 is evenly distributed on the end cover 11, resulting in high heat dissipation efficiency.

[0036] In some embodiments, the frame 21 is connected to the end cap 11 by welding, which is simple and provides a strong connection. Of course, in other embodiments, the frame 21 can also be connected to the end cap 11 by bolts.

[0037] In some embodiments, the temperature sensing channel 213 is a cylindrical channel. Airflow can be guided to the temperature sensing element 12 through the air sensing channel 213. Of course, in other embodiments, the temperature sensing channel 213 can also be a prismatic channel.

[0038] In some embodiments, the blade 22 and the frame 21 are integrally formed, which simplifies the manufacturing process and eliminates the risk of loose connections. Since the blade 22 and frame 21 are integrally molded, the flow guiding device 2 generates less noise and has higher reliability when the blade 22 rotates with the frame 21.

[0039] Of course, in other embodiments, the blade 22 and the frame 21 can also be connected by welding.

[0040] In some embodiments, the frame 21 includes an inner frame 211 and an outer frame 212. The outer frame 212 surrounds the temperature sensing element 12. The outer frame 212 is connected to the end cap 11. The outer frame 212 defines a temperature sensing channel 213. The inner frame 211 is located in the temperature sensing channel 213. One end of the blade 22 is connected to the inner frame 211. The other end of the blade 22 is connected to the outer frame 212. By configuring the frame 21 to include an inner frame 211 and an outer frame 212, with one end of the blade 22 connected to the inner frame 211 and the other end of the blade 22 connected to the outer frame 212, the risk of dynamic balance vibration and abnormal noise of the flow guide device 2 is reduced, and the structure is more reliable.

[0041] It can be understood that the blade 22 and the frame 21 are an integral structure, or that the blade 22 and the inner frame 211 are an integral structure. Alternatively, the blade 22 and the outer frame 212 can be understood as an integral structure. Furthermore, the blade 22 can be understood as an integral structure with both the inner and outer frames 211 and 212.

[0042] In some embodiments, a protrusion 23 is provided at one end of the outer frame 212 near the clutch body 1. The protrusion 23 is connected to the end cover 11. By providing the protrusion 23 at one end of the outer frame 212 near the clutch body 1, it is convenient to use the protrusion 23 to connect the outer frame 212 and the end cover 11.

[0043] Specifically, the protrusion 23 is connected to the end cap 11 by welding.

[0044] Of course, in other embodiments, the protrusion 23 can also be connected to the end cap 11 by bolts.

[0045] In some embodiments, the outer frame 212 and the protrusion 23 are an integral structure. By making the protrusion 23 and the outer frame 212 an integral structure, the process is simple and there is no risk of loosening of the connection.

[0046] Of course, in other embodiments, the protrusion 23 can also be connected to the outer frame 212 by welding.

[0047] In some embodiments, multiple protrusions 23 are provided, and the multiple protrusions 23 are evenly spaced along the circumference of the outer frame 212. Two adjacent protrusions 23 define a ventilation space 231. By providing multiple protrusions 23 evenly spaced along the circumference of the outer frame 212, on the one hand, the connection points between the outer frame 212 and the end cover 11 can be increased, and the connection between the outer frame 212 and the end cover 11 can be strengthened; on the other hand, a ventilation space 231 can be formed between two adjacent protrusions 23, and gas can flow out from the ventilation space 231, avoiding damage to the temperature sensing element 12.

[0048] Specifically, protrusion 23 is a rectangular plate-like structure.

[0049] Of course, in other embodiments, the protrusion 23 may also be a trapezoidal plate structure.

[0050] Specifically, there are four protrusions 23, which are evenly spaced along the circumference of the outer frame 212.

[0051] Of course, in other embodiments, two protrusions 23 may be provided, with the two protrusions 23 evenly spaced along the circumference of the outer frame 212. Three protrusions 23 may also be provided, with the three protrusions 23 evenly spaced along the circumference of the outer frame 212. More protrusions 23 may also be provided.

[0052] In some embodiments, the cross-sectional shape of the outer frame 212 is annular along the axial direction. By setting the cross-sectional shape of the outer frame 212 to be annular along the axial direction, airflow resistance is minimized, noise is reduced, and space containment is improved.

[0053] Of course, in other embodiments, the cross-sectional shape of the outer frame 212 along the axial direction of the outer frame 212 can also be elliptical.

[0054] In some embodiments, the outer diameter of the outer frame 212 is equal along the axial direction of the outer frame 212, which is simple in process and convenient for manufacturing.

[0055] Of course, in other embodiments, the outer diameter of the outer frame 212 may gradually decrease or gradually increase along the axial direction of the outer frame 212.

[0056] In some embodiments, the inner frame 211 has a weight-reducing hole 2111. The weight-reducing hole 2111 extends axially along the inner frame 211. By providing the weight-reducing hole 2111 extending axially along the inner frame 211, the overall weight of the flow guide device 2 is reduced, improving the reliability of the silicone oil fan clutch.

[0057] Specifically, the weight-reducing hole 2111 is a circular hole. Of course, in other embodiments, the weight-reducing hole 2111 can also be an elliptical hole.

[0058] In some embodiments, the length of the weight-reducing hole 2111 along the axial direction of the inner frame 211 is equal to the length of the inner frame 211, that is, the weight-reducing hole 2111 penetrates through the inner frame 211. Of course, in other embodiments, the length of the weight-reducing hole 2111 along the axial direction of the inner frame 211 may also be less than the length of the inner frame 211.

[0059] In some embodiments, the cross-sectional shape of the inner frame 211 along the axial direction is annular. Of course, in other embodiments, the cross-sectional shape of the inner frame 211 along the axial direction may also be elliptical.

[0060] In some embodiments, the axial direction of the inner frame 211 is parallel to the axial direction of the outer frame 212.

[0061] In some embodiments, the length of the inner frame 211 is equal to the length of the outer frame 212 along the axial direction of the inner frame 211. Of course, in other embodiments, the length of the inner frame 211 may be less than the length of the outer frame 212 along the axial direction of the inner frame 211.

[0062] In some embodiments, the inner frame 211 and the outer frame 212 are coaxially arranged.

[0063] In some embodiments, the difference between the outer diameter and the inner diameter of the inner frame 211 is smaller than the difference between the outer diameter and the inner diameter of the outer frame 212.

[0064] In some embodiments, the width of the blades 22 gradually increases along the direction from the inner frame 211 to the outer frame 212. On the one hand, this makes the connection between the blades 22 and the frame 21 more robust, and the blades 22 stronger; on the other hand, it makes the sweeping area of ​​the blades 22 larger, and the airflow guiding effect better. Of course, in other embodiments, the width of the blades 22 can also be equal along the direction from the inner frame 211 to the outer frame 212.

[0065] In some embodiments, multiple blades 22 are provided, and the multiple blades 22 are evenly spaced along the circumference of the frame 21. By providing multiple blades 22 evenly spaced along the circumference of the frame 21, the flow guiding effect of the flow guiding device 2 is improved, thereby improving the temperature sensing accuracy of the silicone oil fan clutch.

[0066] Specifically, there are four blades 22, which are evenly spaced along the circumference of the frame 21.

[0067] Of course, in other embodiments, two blades 22 may also be provided, with the two blades 22 evenly spaced along the circumference of the frame 21. Three blades 22 may also be provided, with the three blades 22 evenly spaced along the circumference of the frame 21. More blades 22 may also be provided.

[0068] In some embodiments, the length of the blade 22 along the axial direction of the inner frame 211 is equal to the length of the inner frame 211. Of course, in other embodiments, the length of the blade 22 along the axial direction of the inner frame 211 may be less than or greater than the length of the inner frame 211.

[0069] Working principle: When the end cover 11 of the clutch body 1 rotates at low speed, the end cover 11 will drive the frame 21 connected to it to rotate, and the blade 22 connected to the frame 21 will rotate together with the frame 21, guiding the airflow along the temperature sensing channel 213 to the temperature sensing element 12.

[0070] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0073] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0074] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0075] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A silicone oil fan clutch characterized by, The utility model relates to a kind of clutch, comprising: Clutch body (1), the clutch body (1) includes end cover (11) and temperature sensing piece (12) connected to the end cover (11); And Flow guide device (2), the flow guide device (2) includes: Frame (21), the frame (21) has temperature sensing passage (213), the frame (21) surrounds the temperature sensing piece (12), and the frame (21) is connected to the end cover (11); And Blade (22), the blade (22) is located in the temperature sensing passage (213), and the blade (22) is connected to the frame (21).

2. The silicone oil fan clutch of claim 1, wherein, The blade (22) is provided with multiple, multiple blade (22) is evenly spaced along the circumference of the frame (21).

3. The silicone oil fan clutch of claim 1 wherein, The frame (21) includes inner frame (211) and outer frame (212), the outer frame (212) surrounds the temperature sensing piece (12), and the outer frame (212) is connected to the end cover (11), and the outer frame (212) defines the temperature sensing passage (213), and the inner frame (211) is located in the temperature sensing passage (213), one end of the blade (22) is connected to the inner frame (211), and the other end of the blade (22) is connected to the outer frame (212).

4. The silicone oil fan clutch of claim 3, wherein, Along the direction of the inner frame (211) to the outer frame (212), the width of the blade (22) gradually increases.

5. The silicone oil fan clutch of claim 3 wherein, The outer frame (212) is provided with protrusion (23) close to one end of the clutch body (1), and the protrusion (23) is connected to the end cover (11).

6. The silicone oil fan clutch of claim 5 wherein, The protrusion (23) is provided with multiple, multiple protrusion (23) is evenly spaced along the circumference of the outer frame (212), and adjacent two protrusion (23) defines ventilation space (231).

7. The silicone oil fan clutch of claim 5 wherein, The protrusion (23) and the outer frame (212) are integrated structure.

8. The silicone oil fan clutch of claim 3 wherein, The inner frame (211) has weight-reducing hole (2111) extending in its axial direction.

9. The silicone oil fan clutch of claim 3 wherein, Along the axial direction of the outer frame (212), the shape of the cross section of the outer frame (212) is circular ring.

10. The silicone oil fan clutch of claim 1 wherein, The frame (21) and the blade (22) are integrated structure.

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