Booster pump heat sink and booster pump

Abstract

The application relates to a booster pump heat dissipation device and a booster pump. The booster pump heat dissipation device comprises a coupling, a motor and a fan; the coupling comprises a first transmission disc and a second transmission disc, which are arranged on the rotating shafts of the coupling and the motor respectively and have a gap, wherein the first transmission disc and / or the second transmission disc is a thermal expansion part; when the ambient temperature is greater than or equal to a critical temperature, the first transmission disc and the second transmission disc are in expansion contact to realize transmission connection; when the ambient temperature is less than the critical temperature, the first transmission disc and the second transmission disc are in shrinkage separation to realize disconnection; the volume of the thermal expansion part is expanded or shrunk according to the temperature change, so that when the motor temperature approaches an overheating temperature, the fan is automatically connected to the motor to accelerate heat dissipation; when the motor temperature is reduced to be lower than the overheating temperature, the fan is automatically disconnected from the motor, so that the energy consumption of the motor for heat dissipation is reduced under the premise that the motor is prevented from overheating, and the power waste of the motor is avoided.

Description

Technical Field

[0001] This invention relates to the technical field of water purifiers, and in particular to a booster pump cooling device and a booster pump. Background Technology

[0002] With the upgrading and iteration of water purification products, water purifiers are developing towards smaller size and larger flow rate. This means that the booster pumps used in water purifiers are becoming more powerful, while the size and space occupied by the booster pumps are decreasing. This leads to an increase in the heat generated by the booster pumps during operation and makes it difficult to dissipate the heat.

[0003] The current solutions to this problem mainly involve adding a fan to the booster pump or pump head to improve heat dissipation. In addition, for the sake of integrated design and cost savings, the fan's rotating shaft is usually connected to the rotating shaft of the motor inside the pump to obtain power. However, this results in a portion of the power from the motor inside the pump always being used to power the fan.

[0004] In actual use, the booster pump of a water purifier usually does not work continuously for a long time, meaning it will not reach the critical temperature in most cases. Therefore, when the critical temperature is not reached, the fan rotates to cool the booster pump, which leads to a waste of the internal motor's power. Summary of the Invention

[0005] Therefore, it is necessary to address the problem that the fan used for cooling the booster pump is always running, resulting in wasted power of the booster pump motor. A booster pump cooling device and booster pump that can avoid power waste while ensuring cooling effect should be provided.

[0006] This application first provides a booster pump cooling device, including a coupling, a motor and a fan; the coupling includes a first transmission disk and a second transmission disk, which are respectively disposed on the shaft of the coupling and the shaft of the motor and have a gap, wherein the first transmission disk and / or the second transmission disk are thermal expansion components;

[0007] When the ambient temperature is greater than or equal to the critical temperature, the first transmission disc and the second transmission disc expand to make contact and connect for transmission; when the ambient temperature is less than the critical temperature, the first transmission disc and the second transmission disc contract to disengage and disconnect.

[0008] In one embodiment, the motor and the fan shafts are arranged along the same axis, the second transmission disk is sleeved outside the first transmission disk, and the coefficient of thermal expansion of the first transmission disk is greater than that of the second transmission disk.

[0009] Compared to other arrangements, this configuration has several advantages. First, the first transmission disc is at least partially embedded within the second transmission disc, resulting in less space occupied by the coupling and allowing room for other components. This aligns with the current trend of water purifiers towards smaller size and miniaturization. Second, after the first transmission disc expands, its entire outer circumference is connected to the second transmission disc, resulting in a relatively large contact area and a more stable transmission connection.

[0010] In one embodiment, the coefficient of thermal expansion of the first transmission disc is in the range of 17 × 10⁻⁶. -6 / K~70×10 -6 / K.

[0011] In one embodiment, the first transmission disc is made of copper, iron-nickel-cobalt alloy, or polymer material.

[0012] In one embodiment, the coefficient of thermal expansion of the second transmission disc is in the range of 7.8 × 10⁻⁶. -7 / K~36×10 -7 / K.

[0013] This configuration ensures that, under the same ambient temperature change, the expansion and contraction of the first transmission disc is greater than that of the second transmission disc, thereby ensuring that the first transmission disc can be connected or disconnected from the second transmission disc.

[0014] In one embodiment, the second drive disc is made of ceramic material.

[0015] In one embodiment, the first transmission disc has a through hole.

[0016] This design facilitates the thermal deformation of the first transmission disc, making its expansion and deformation after heating more pronounced, which is beneficial for the engagement and disengagement of the first and second transmission discs as the temperature changes.

[0017] In one embodiment, the area of ​​the through hole accounts for 40% to 50% of the total area of ​​the first transmission disk.

[0018] With this configuration, the structural strength of the first transmission disc can meet the actual usage requirements, and the through hole significantly improves the thermal deformation capability of the first transmission disc.

[0019] In one embodiment, the second transmission disk has a receiving cavity, the inner sidewall of the receiving cavity has a second meshing tooth, the first transmission disk is disposed in the receiving cavity, and the outer peripheral surface of the first transmission disk has a first meshing tooth that can mesh with the second meshing tooth.

[0020] A second aspect of this application provides a booster pump, including a housing and the aforementioned booster pump cooling device, wherein a motor is disposed inside the housing and is capable of driving the booster pump to operate, and a fan is located outside the housing and the fan's shaft is rotatably connected to the housing.

[0021] The aforementioned booster pump cooling device utilizes the characteristic that the volume of the first and second transmission discs expands and contracts with temperature changes by designing the first and second transmission discs. This allows the fan to automatically connect to the motor to accelerate heat dissipation when the motor temperature approaches the overheating temperature, and to automatically disconnect the fan from the motor when the motor temperature drops below the overheating temperature. This reduces the energy consumption of the motor for heat dissipation while ensuring that the motor does not overheat, thus avoiding power waste. Attached Figure Description

[0022] Figure 1 This is a perspective view of the booster pump cooling device of this application;

[0023] Figure 2 for Figure 1 Exploded view of the coupling;

[0024] Figure 3 This is a perspective view of the booster pump of this application.

[0025] Reference numerals: 10, first transmission disc; 11, through hole; 12, first meshing tooth; 20, second transmission disc; 21, accommodating cavity; 22, second meshing tooth; 100, coupling; 200, motor; 300, fan; 1, housing. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 or an electrical connection; 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 invention according to the specific circumstances.

[0030] In this invention, 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," "over," and "on top" of 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.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] Please combine Figure 1 as well as Figure 2 As shown, this application first provides a booster pump cooling device, including a coupling 100, a motor 200, and a fan 300; the coupling 100 includes a first transmission disk 10 and a second transmission disk 20, which are respectively disposed on the shafts of the coupling 100 and the motor 200 and have a gap, wherein the first transmission disk 10 and / or the second transmission disk 20 are thermal expansion components; when the ambient temperature is greater than or equal to the critical temperature, the first transmission disk 10 and the second transmission disk 20 expand to contact each other for transmission connection; when the ambient temperature is less than the critical temperature, the first transmission disk 10 and the second transmission disk 20 contract to disengage and disconnect.

[0033] For ease of description, the critical temperature in this application is a preset value of the ambient temperature. When the ambient temperature rises to the critical temperature, the temperature of the motor 200 is close to the critical point of overheating.

[0034] Understandably, when the motor 200 is running at low speed or at the start of operation, the amount of heat generated and accumulated by the motor 200 is less, and the ambient temperature in the space where the coupling is located is relatively low. The ambient temperature is lower than the critical temperature. At this time, the first transmission disc 10 is disconnected from the second transmission disc 20, and the motor 200 will not drive the fan 300 to rotate.

[0035] As the speed of motor 200 increases or continues to run, the heat generated and accumulated by motor 200 gradually increases, and the ambient temperature gradually rises. As a result, the temperature of coupling 100 also gradually rises through the heat exchange with the air. The volume of the first transmission disc 10 and / or the second transmission disc 20 expands and increases with their respective temperatures until the ambient temperature reaches the critical temperature. At this point, motor 200 is close to the critical point of overheating. The first transmission disc 10 and / or the second transmission disc 20 just expand to the point of mutual transmission connection. Motor 200 drives fan 300 to rotate through coupling 100 to accelerate heat dissipation.

[0036] As the fan 300 rotates and accelerates the heat dissipation, the temperature of the motor 200 gradually decreases. Due to the lag in heat exchange through the air, when the ambient temperature drops below the critical temperature, the temperature of the motor 200 is already below its overheating temperature. At this time, the first transmission disc 10 and / or the second transmission disc 20 retract and disconnect again, and the motor 200 no longer drives the fan 300 to rotate.

[0037] By repeating the above process, the temperature of motor 200 can be automatically controlled below the overheating temperature.

[0038] More specifically, the overheating temperature varies depending on the model of motor 200. This application can determine a suitable critical temperature based on the different overheating temperatures of motor 200, and select appropriate first transmission disc 10 and second transmission disc 20 according to the critical temperature (when the ambient temperature rises to the critical temperature, the first transmission disc 10 and the second transmission disc 20 just expand to the transmission connection) to achieve overheat control of different models of motor 200.

[0039] It is not difficult to understand that, by designing the first transmission disk 10 and the second transmission disk 20, this application utilizes the characteristic that the volume of the first transmission disk 10 and the second transmission disk 20 expands and contracts accordingly with temperature rise and fall. This allows the fan 300 to automatically connect to the motor 200 to accelerate heat dissipation when the temperature of the motor 200 approaches the overheating temperature. When the temperature of the motor 200 drops below the overheating temperature, the fan 300 automatically disconnects from the motor 200. This reduces the energy consumption of the motor 200 for heat dissipation while ensuring that the motor 200 does not overheat, thus avoiding power waste of the motor 200.

[0040] Optionally, the transmission connection between the first transmission disk 10 and the second transmission disk 20 can be a straight / bevel gear meshing, friction disk contact, etc., as long as the two can thermally expand and achieve transmission connection after the ambient temperature rises, and contract and disconnect again after the ambient temperature drops. This application does not make any further limitations here.

[0041] Alternatively, the relative positional relationship between the motor 200 shaft and the fan 300 shaft can be adjusted, including but not limited to parallel, perpendicular, or coaxial. This can be achieved by adjusting the shape of the coupling 100 according to the relative positional relationship between the two shafts, so that the first transmission disc 10 and the second transmission disc 20 can thermally expand and achieve transmission connection after the ambient temperature rises, and shrink and disconnect again after the ambient temperature drops.

[0042] For example, the shaft of motor 200 is parallel to the shaft of fan 300. The first transmission disk 10 and the second transmission disk 20 have a gap in the radial direction in the initial state. When the ambient temperature reaches the critical temperature, the expansion of the first transmission disk 10 and / or the first transmission disk 20 is equal to the gap between them.

[0043] For the best option, please refer to the following: Figure 1 as well as Figure 2 As shown, in some embodiments, the shafts of the motor 200 and the fan 300 are arranged along the same axis, and the second transmission disk 20 is sleeved outside the first transmission disk 10. The coefficient of thermal expansion of the first transmission disk 10 is greater than that of the second transmission disk 20.

[0044] By mounting the second transmission disc 20 outside the first transmission disc 10, compared to other arrangements, on the one hand, the first transmission disc 10 is at least partially embedded within the second transmission disc 20, reducing the space occupied by the coupling 100 and allowing space for other components, which aligns with the current trend of water purifiers towards smaller size and miniaturization; on the other hand, after the first transmission disc 10 expands, its entire outer circumference is connected to the second transmission disc 20, resulting in a relatively large contact area between the two and a more stable transmission connection.

[0045] In some embodiments, the first transmission disk 10 is made of a material with a large coefficient of thermal expansion, and the coefficient of thermal expansion of the first transmission disk 10 is in the range of 17 × 10⁻⁶. -6 / K~70×10 -6 / K; The second transmission disc 20 is made of a material with a low coefficient of thermal expansion, and the coefficient of thermal expansion of the second transmission disc 20 is in the range of 7.8×10. -7 / K~36×10 -7 / K.

[0046] This configuration ensures that, under the same ambient temperature change, the expansion and contraction of the first transmission disc 10 is greater than that of the second transmission disc 20, thereby ensuring that the first transmission disc 10 can be connected or disconnected from the second transmission disc 20.

[0047] Preferably, in some embodiments, the first transmission disk 10 is a copper, iron-nickel-cobalt (FeNiCo) alloy or a polymer material with a large coefficient of thermal expansion, such as a high-temperature resistant bulk expansion polymer material; the second transmission disk 20 is a ceramic material, etc.

[0048] Please refer to Figure 2 As shown, in some embodiments, the first transmission disk 10 has a through hole 11.

[0049] It is easy to understand that by opening a through hole 11 on the surface of the first transmission disk 10, the thermal deformation of the first transmission disk 10 can be facilitated, so that the expansion and deformation of the first transmission disk 10 after being heated is more obvious, which is beneficial to the engagement and disengagement between the first transmission disk 10 and the second transmission disk 20 as the temperature changes.

[0050] Preferably, in some embodiments, the area of ​​the through hole 11 accounts for 40% to 50% of the total area of ​​the first transmission disk 10.

[0051] If the area of ​​the through hole 11 is too large, it will affect the structural strength of the first transmission disk 10. If the area of ​​the through hole 11 is too small, it will have little effect on improving the thermal deformation capability of the first transmission disk 10. After calculation, simulation test and experimental verification, when the area of ​​the through hole 11 accounts for 40% to 50% of the total area of ​​the first transmission disk 10, the structural strength of the first transmission disk 10 can meet the actual use requirements, and the through hole 11 has a significant effect on improving the thermal deformation capability of the first transmission disk 10.

[0052] Optional, please refer to Figure 2 As shown, the first transmission disk 10 has multiple through holes 11, which are evenly arranged along the axial direction of the first transmission disk 10 to ensure that the first transmission disk 10 expands relatively evenly after being heated, and that the structural strength of each position of the first transmission disk 10 is also relatively uniform.

[0053] Preferably, the through hole 11 includes small round holes, strip holes and large round holes, wherein each small round hole is evenly arranged circumferentially, and the strip holes and large round holes are located outside the small round holes and are evenly spaced circumferentially.

[0054] More preferably, the first transmission disc 10 has 8 small round holes, 4 strip holes and 4 large round holes.

[0055] Please refer to Figure 2 As shown, in some embodiments, the second transmission disk 20 has a receiving cavity 21, the inner sidewall of the receiving cavity 21 has a second meshing tooth 22, the first transmission disk 10 is disposed in the receiving cavity 21, and the outer peripheral surface of the first transmission disk 10 has a first meshing tooth 12 that can mesh with the second meshing tooth 22.

[0056] Preferably, the inner wall of the accommodating cavity 21 is evenly distributed with a plurality of second meshing teeth 22 along the circumferential direction, and the outer peripheral surface of the first transmission disk 10 has a plurality of first meshing teeth 12 corresponding one-to-one with the second meshing teeth 22, so that the first transmission disk 10 can fully mesh with the second transmission disk 20 after being heated and expanded.

[0057] More preferably, the edges of both the first meshing tooth 12 and the second meshing tooth 22 are chamfered to provide a certain guiding effect and facilitate meshing between the two.

[0058] Of course, in other embodiments, the transmission connection between the first transmission disk 10 and the second transmission disk 20 can be other commonly used transmission connection methods such as friction disk contact, as long as the two can thermally expand and achieve transmission connection after the ambient temperature rises, and contract and disconnect again after the ambient temperature drops. This application does not make any further limitations here.

[0059] In some embodiments, the first transmission disk 10 is fixed to the shaft of the motor 200, and the second transmission disk 20 is fixed to the shaft of the fan 300.

[0060] It is worth mentioning that the motor 200 always needs to use a portion of its power to drive the parts mounted on the motor 200 shaft to rotate. Compared to the second transmission disc 20, the first transmission disc 10 is smaller in size and has a through hole 11, and is lighter in weight. Therefore, fixing the first transmission disc 10 to the shaft of the motor 200 can effectively reduce the power waste caused by the motor 200 driving the parts on its own shaft to rotate when it is not overheated.

[0061] Please refer to Figure 1 As shown, in some embodiments, the first transmission disk 10, the second transmission disk 20, and their respective corresponding rotating shafts are all provided with pin holes in the radial direction, so that the first transmission disk 10, the second transmission disk 20, and their respective corresponding rotating shafts can be fixed by pins.

[0062] Of course, the first transmission disc 10, the second transmission disc 20 and their respective corresponding rotating shafts can also be fixed using other commonly used fixing methods, such as snap-fitting, welding, etc. This application does not make any further limitations here.

[0063] Furthermore, in some embodiments, both rotating shafts have axially extending guide portions on their outer peripheral surfaces. The first transmission disk 10 and the second transmission disk 20 are both provided with axially extending guide holes. When the guide portions are aligned with the guide holes, the pin holes on the first transmission disk 10, the second transmission disk 20, and their respective corresponding rotating shafts are parallel to each other. The design of the guide portions and guide holes facilitates the alignment of the pin holes, thereby facilitating the installation of the booster pump cooling device of this application.

[0064] Please refer to Figure 3 As shown, the second aspect of this application provides a booster pump, including a housing 1 and the aforementioned booster pump cooling device, a motor 200 disposed inside the housing 1 and capable of driving the booster pump to operate, and a fan 300 located outside the housing 1 with the fan 300's shaft rotatably connected to the housing 1.

[0065] In some embodiments, sheaths are uniformly provided on the outer peripheral surface of the housing 1 to increase the heat dissipation area of ​​the housing 1 and facilitate heat dissipation by the fan 300.

[0066] In some embodiments, a shroud is also provided on the outside of the housing 1. The shroud covers both the fan 300 and the elytra inside. The shroud has an opening on the side facing the fan 300 so that the rotation of the fan 300 can introduce outside air into the shroud through the opening and flow through the elytra around the booster pump to remove heat.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A booster pump cooling device, characterized in that, Includes a coupling (100), a motor (200), and a fan (300); The coupling (100) includes a first transmission disc (10) and a second transmission disc (20), which are respectively disposed on the shaft of the coupling (100) and the motor (200) and have a gap, wherein the first transmission disc (10) and / or the second transmission disc (20) are thermal expansion components; When the ambient temperature is greater than or equal to the critical temperature, the first transmission disk (10) and the second transmission disk (20) expand to contact each other for transmission connection; when the ambient temperature is less than the critical temperature, the first transmission disk (10) and the second transmission disk (20) contract to disengage and disconnect. The motor (200) and the fan (300) have their shafts arranged along the same axis; the second transmission disk (20) is sleeved outside the first transmission disk (10), and the thermal expansion coefficient of the first transmission disk (10) is greater than that of the second transmission disk (20). The second transmission disk (20) has a receiving cavity (21), the inner sidewall of the receiving cavity (21) has a second meshing tooth (22), the first transmission disk (10) is disposed in the receiving cavity (21), and the outer peripheral surface of the first transmission disk (10) has a first meshing tooth (12) that can mesh with the second meshing tooth (22).

2. The booster pump cooling device according to claim 1, characterized in that, The thermal expansion coefficient of the first transmission disc (10) is in the range of ~ .

3. The booster pump cooling device according to claim 2, characterized in that, The first transmission disk (10) is made of copper, iron-nickel-cobalt alloy or polymer material.

4. The booster pump cooling device according to claim 2, characterized in that, The range of the thermal expansion coefficient of the second transmission disc (20) is: ~ .

5. The booster pump cooling device according to claim 4, characterized in that, The second transmission disc (20) is made of ceramic material.

6. The booster pump cooling device according to claim 1, characterized in that, The first transmission disc (10) has a through hole (11).

7. The booster pump cooling device according to claim 6, characterized in that, The area of ​​the through hole (11) accounts for 40% to 50% of the total area of ​​the first transmission disk (10).

8. A booster pump, characterized in that, Includes a housing (1) and a booster pump cooling device as described in any one of claims 1 to 7, wherein the motor (200) is disposed inside the housing (1) and is capable of driving the booster pump to operate, and the fan (300) is located outside the housing (1) and the rotating shaft of the fan (300) is rotatably connected to the housing (1).

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