Booster pump cooling device and booster pump

Abstract

The invention relates to a booster pump cooling device and a booster pump. The booster pump cooling device comprises a motor, a fan and a clutch structure, rotating shafts of the motor and the fan are arranged along the same axis, and the clutch structure comprises a fixed disc and a movable assembly which are arranged on the two rotating shafts respectively; the movable assembly comprises a movable disc and a supporting disc which are sequentially away from the fixed disc in the axial direction, and further comprises a spring used for driving the movable disc to move in the direction close to the supporting disc. One of the fixed disc, the movable disc and the supporting disc is a magnet, one adjacent to the magnet is a magnet or a ferromagnet, and the magnetic force direction between the two is opposite to the elastic force direction of the spring; when the temperature of the magnet is lower than the critical temperature, the magnetic force between the two is greater than the elasticity of the spring, and the movable disc is disconnected from the fixed disc; when the temperature of the magnet is larger than or equal to the critical temperature, the magnetic force between the two is smaller than the elastic force of the spring.

Description

Technical Field

[0001] The present invention relates to the technical field of water purifiers, and particularly to a booster pump cooling device and a booster pump. Background Art

[0002] With the update and iteration of water purification products, water purifiers are developing towards the direction of small volume and large flow rate, that is, the power of the booster pumps used on water purifiers is getting larger and larger, and the volume and occupied space of the booster pumps are decreasing. This will cause the heat generated by the booster pumps during operation to increase and it is difficult to dissipate heat.

[0003] Currently, the solutions to this problem mainly include adding a fan on the booster pump or the pump head to increase the heat dissipation effect by the rotation of the fan; in addition, for integrated design and cost saving, generally, the rotating shaft of the fan is connected to the rotating shaft of the motor inside the pump to obtain power, but this will cause a part of the power of the motor inside the pump to always be provided for the rotation of the fan.

[0004] In the actual use process of the water purifier, the booster pump usually does not work continuously for a long time, that is, in most cases, it will not reach the critical temperature. Therefore, when the fan rotates to cool the booster pump before reaching the critical temperature, it will cause waste of the power of the motor inside. Summary of the Invention

[0005] Based on this, it is necessary to provide a booster pump cooling device and a booster pump that can avoid power waste on the premise of ensuring the heat dissipation effect for the problem that the fan used to cool the booster pump always rotates currently, resulting in waste of the power of the booster pump motor.

[0006] The present application first provides a booster pump cooling device, including a motor, a fan, and a clutch structure. The rotating shafts of the motor and the fan are arranged along the same axis. The clutch structure includes a fixed disk and a movable component respectively arranged on the two rotating shafts.

[0007] The movable component includes a movable disk and a support disk that are sequentially away from the fixed disk along the axial direction. The movable disk is fixed to the corresponding rotating shaft in the circumferential direction and is movably connected to the rotating shaft in the axial direction. The support disk is fixed relative to the corresponding rotating shaft in the axial direction. The movable component further includes a spring for driving the movable disk to move towards the support disk.

[0008] One of the fixed disk, the movable disk, and the support disk is a magnet, and one of the adjacent ones to this magnet is a magnet or a ferromagnetic body. The magnetic force direction between the two is opposite to the elastic force direction of the spring.

[0009] When the temperature of the magnet is lower than the critical temperature, the magnetic force between the two is greater than the elastic force of the spring, and the movable disk is disconnected from the fixed disk; when the temperature of the magnet is greater than or equal to the critical temperature, the magnetic force between the two is less than the elastic force of the spring, and the movable disk is in driving connection with the fixed disk.

[0010] In one embodiment, the support disk is fixed to the rotating shaft where the movable disk is located, and both ends of the spring are fixed to the support disk and the movable disk respectively.

[0011] In one embodiment, pin holes are radially formed on the support disk, the fixed disk and their respective corresponding rotating shafts, so that the support disk and the fixed disk can be fixed to their respective corresponding rotating shafts through pins.

[0012] In one embodiment, guiding portions extending axially are provided on the outer circumferential surfaces of the two rotating shafts, and guiding holes are axially formed through the movable disk and the fixed disk. When the guiding portions are aligned with the guiding holes, the pin holes on the support disk and the corresponding rotating shaft, and the pin holes on the fixed disk and the corresponding rotating shaft are parallel to each other.

[0013] In one embodiment, in the two end faces of the movable disk and the fixed disk that are close to each other, at least one clutch hole is formed in one of them, and a clutch protrusion that can be correspondingly matched with the clutch hole is fixed on the other.

[0014] In one embodiment, the two end faces of the movable disk and the fixed disk that are close to each other are both circular, and the clutch holes and the clutch protrusions are evenly distributed along the circumferences of their respective end faces.

[0015] In one embodiment, the fixed disk is fixed to the motor rotating shaft of the motor, and the movable assembly is arranged on the fan rotating shaft of the fan.

[0016] In one embodiment, the support disk is a magnet, the movable disk is a magnet or a ferromagnetic body, and the support disk and the movable disk attract each other.

[0017] In one embodiment, the support disk is a neodymium iron boron magnet, and the movable disk is a ferromagnetic body.

[0018] In the second aspect of the present application, a booster pump is provided, including a housing and the above-mentioned booster pump cooling device. The motor is arranged inside the housing and can drive the booster pump to operate, and the fan is located outside the housing and the rotating shaft of the fan is rotatably connected to the housing.

[0019] The above-mentioned supercharger cooling device controls the clutch between the movable disk and the fixed disk through a magnet and a spring, and utilizes the characteristic that the magnetism of the magnet weakens as the temperature increases. When the temperature of the motor approaches the overheat temperature, the fan is automatically connected to the motor for accelerated heat dissipation. When the temperature of the motor drops below the overheat temperature, the fan is automatically disconnected from the motor. Thus, on the premise of ensuring that the motor will not overheat, the energy consumption of the motor for heat dissipation is reduced, and the power waste of the motor is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the supercharger in this application;

[0021] Figure 2 is Figure 1 a cross-sectional view along the front view direction;

[0022] Figure 3 is Figure 2 a perspective view of the supercharger cooling device in [the figure];

[0023] Figure 4 is a perspective view of the movable disk and the fixed disk in [the figure] from another angle.

[0024] Reference numerals: 10, motor; 11, motor rotating shaft; 20, fan; 21, fan rotating shaft; 30, clutch structure; 31, fixed disk; 31a, clutch hole; 32, movable assembly; 321, movable disk; 321a, clutch protrusion; 322, elastic member; 323, support disk; 40, guiding portion; 50, guiding hole; 100, housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by 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. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0027] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0030] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0031] Please refer to Figure 1 and Figure 2As shown in the figure, the present application first provides a supercharger cooling device, including a motor 10, a fan 20, and a clutch structure 30. The rotating shafts of the motor 10 and the fan 20 are arranged along the same axis. The clutch structure 30 includes a fixed disk 31 and a movable component 32 respectively arranged on the two rotating shafts. The movable component 32 includes a movable disk 321 and a support disk 323 that are sequentially away from the fixed disk 31 along the axial direction. The movable disk 321 is fixed to the corresponding rotating shaft in the circumferential direction and is movably connected to the rotating shaft in the axial direction. The support disk 323 is fixed relative to the corresponding rotating shaft in the axial direction. The movable component 32 further includes an elastic member 322 for driving the movable disk 321 to move towards the support disk 323. One of the fixed disk 31, the movable disk 321, and the support disk 323 is a magnet, and one of the adjacent ones to the magnet is a magnet or a ferromagnetic material. The magnetic force direction between the two is opposite to the elastic force direction of the elastic member 322. When the magnet temperature is less than the critical temperature, the magnetic force between the above two is greater than the elastic force of the elastic member 322, and the movable disk 321 is disconnected from the fixed disk 31. When the magnet temperature is greater than or equal to the critical temperature, the magnetic force between the above two is less than the elastic force of the elastic member 322, and the movable disk 321 is in driving connection with the fixed disk 31.

[0032] For the convenience of description, the magnet in the present application refers to a material with magnetism; the ferromagnetic material refers to materials such as iron, cobalt, and nickel that can be attracted by the magnet; the magnet temperature refers to the real-time temperature of the magnet; the critical temperature is a preset value of the magnet temperature. When the magnet heats up to the critical temperature, the temperature of the motor 10 is at a critical point close to overheating.

[0033] Specifically, when the supercharger starts to operate, the magnet temperature is less than the critical temperature, the movable disk 321 is disconnected from the fixed disk 31, and the motor 10 does not drive the fan 20 to rotate.

[0034] With the continuous operation of the supercharger, the motor 10 generates heat and gradually heats up. At the same time, through the heat exchange of air, the magnet temperature also gradually rises. The magnetism of the magnet gradually decreases as the temperature rises until the magnet temperature rises to the critical temperature. At this time, the motor 10 is at a critical point close to overheating, and the magnetism of the magnet drops to a point where the suction / repulsion force between it and the ferromagnetic material or another magnet is less than the elastic force of the elastic member 322. The movable disk 321 is in driving connection with the fixed disk 31 under the elastic force of the elastic member 322, that is, the motor 10 drives the fan 20 to rotate at an accelerated speed for heat dissipation through the clutch structure 30.

[0035] With the accelerating heat dissipation effect of the rotation of the fan 20, the temperature of the motor 10 gradually decreases. Due to the certain hysteresis in heat exchange through air, when the temperature of the magnet drops below the critical temperature, the temperature of the motor 10 has already dropped below its overheat temperature. At this time, the magnetic force of the magnet resumes to be greater than the elastic force of the elastic member 322 between the suction force / repulsion force with the ferromagnetic body or another magnet. The movable disk 321 and the fixed disk 31 are disconnected again under the action of the suction force / repulsion force to overcome the elastic force of the elastic member 322, and the motor 10 no longer drives the fan 20 to rotate;

[0036] By repeating the above process, the temperature of the motor 10 can be controlled below the overheat temperature.

[0037] More specifically, according to the different models of the motor 10, the overheat temperature is also different. In this application, according to the different overheat temperatures of the motor 10, a suitable critical temperature is determined, and a suitable magnet and elastic member 322 are selected according to the critical temperature. As long as it is ensured that when the ambient temperature is less than the critical temperature, the suction force / repulsion force between the magnet and the ferromagnetic body or another magnet is greater than the elastic force of the elastic member 322, and vice versa, the suction force / repulsion force is less than the elastic force of the elastic member 322.

[0038] It is not difficult to understand that in this application, the clutch between the movable disk 321 and the fixed disk 31 is controlled by the magnet and the elastic member 322, and the characteristic that the magnetic force of the magnet weakens with the increase of temperature is utilized. When the temperature of the motor 10 approaches the overheat temperature, the fan 20 is automatically connected to the motor 10 for accelerated heat dissipation. When the temperature of the motor 10 drops below the overheat temperature, the fan 20 is automatically disconnected from the motor 10, thereby reducing the energy consumption of the motor 10 for heat dissipation and avoiding the power waste of the motor 10 on the premise of ensuring that the motor 10 will not overheat.

[0039] Please refer to Figure 2 As shown, in some embodiments, the fixed disk 31 is fixed to the motor shaft 11 of the motor 10, and the movable assembly 32 is disposed on the fan shaft 21 of the fan 20.

[0040] It is worth mentioning that the motor 10 always needs a part of its power to drive the parts arranged on the motor shaft 11 to rotate; compared with the fixed disk 31, the movable assembly 32 has more parts and greater weight. Therefore, fixing the fixed disk 31 to the motor shaft 11 can effectively reduce the power waste caused by driving the parts on the motor shaft 11 to rotate when the motor 10 is not overheated compared with disposing the movable assembly 32 on the motor shaft 11.

[0041] Of course, in some other embodiments, the fixed disk 31 can also be fixed to the fan shaft 21 of the fan 20, and the movable assembly 32 is disposed on the motor shaft 11 of the motor 10.

[0042] In some embodiments, the support disk 323 and the movable disk 321 attract each other, and the elastic member 322 is a compression spring; when the temperature of the magnet is less than the critical temperature, the elastic member 322 is in a compressed state, and the suction force between the support disk 323 and the movable disk 321 is greater than the elastic force of the elastic member 322, and the movable disk 321 is disconnected from the fixed disk 31; when the temperature of the magnet is greater than or equal to the critical temperature, the suction force between the support disk 323 and the movable disk 321 is less than the elastic force of the elastic member 322, and the movable disk 321 is drivingly connected to the fixed disk 31 under the action of the elastic force of the elastic member 322.

[0043] Preferably, the support disk 323 is a magnet, and the movable disk 321 is a magnet or a ferromagnetic body.

[0044] More preferably, the support disk 323 is a neodymium iron boron magnet, and the movable disk 321 is a ferromagnetic body; specifically, the N series sintered neodymium iron boron magnet has a maximum operating temperature of 80 °C and a Curie temperature (demagnetization temperature) of 310 °C, which is more suitable for the overheating temperature of most motors 10.

[0045] In some other embodiments, both the movable disk 321 and the fixed disk 31 are magnets, and the movable disk 321 and the fixed disk 31 repel each other, and the elastic member 322 is a compression spring; when the temperature of the magnet is less than the critical temperature, the elastic member 322 is in a compressed state, and the repulsive force between the movable disk 321 and the fixed disk 31 is greater than the elastic force of the elastic member 322, and the movable disk 321 is disconnected from the fixed disk 31; when the temperature of the magnet is greater than or equal to the critical temperature, the repulsive force between the movable disk 321 and the fixed disk 31 is less than the elastic force of the elastic member 322, and the movable disk 321 is drivingly connected to the fixed disk 31 under the action of the elastic force of the elastic member 322.

[0046] Please refer to Figure 2 As shown, in some embodiments, the support disk 323 is fixed to the rotating shaft where the movable disk 321 is located, and both ends of the elastic member 322 are fixed to the support disk 323 and the movable disk 321 respectively; so that the support disk 323, the elastic member 322 and the movable disk 321 can form a whole and rotate synchronously under the drive of the rotating shaft, avoiding wear caused by the rotation of the elastic member 322 relative to the support disk 323 or the movable disk 321.

[0047] Please refer to Figure 2 As shown, in some embodiments, the support disk 323, the fixed disk 31 and their respective corresponding rotating shafts are all provided with pin holes along the radial direction, so that the support disk 323 and the fixed disk 31 can be fixed to their respective corresponding rotating shafts through pins.

[0048] Of course, other common fixing methods can also be used to fix between the support disk 323, the fixed disk 31 and their respective corresponding rotating shafts, such as clamping, welding, etc., and the present application does not make further limitations here.

[0049] Please refer to Figure 2 and Figure 3 As shown, in some embodiments, guide portions 40 extending axially are provided on the outer peripheral surfaces of both rotating shafts. The movable disk 321 and the fixed disk 31 are both axially through-opened with guide holes 50. When the guide portions 40 are aligned with the guide holes 50, the support disk 323 and the pin holes on the corresponding rotating shafts, as well as the fixed disk 31 and the pin holes on the corresponding rotating shafts, are all parallel to each other.

[0050] The design of the guide portions 40 and the guide holes 50 can facilitate the alignment of the pin holes, so as to facilitate the installation of the cooling device of the booster pump in this application.

[0051] Please refer to Figure 4 As shown, in some embodiments, in the two end faces of the movable disk 321 and the fixed disk 31 that are close to each other, at least one clutch hole 31a is opened in one of them, and a clutch projection 321a that can be correspondingly matched with the clutch hole 31a is fixedly provided on the other.

[0052] Of course, in some other embodiments, the movable disk 321 and the fixed disk 31 can also be other clutch structures, such as friction disks, etc., as long as the two can be in driving connection when contacting in the axial direction and disconnected when disengaging in the axial direction. This application does not make further limitations here.

[0053] Please refer to Figure 4 As shown, in some embodiments, the two end faces of the movable disk 321 and the fixed disk 31 that are close to each other are both circular, and the clutch holes 31a and the clutch projections 321a are evenly distributed along the circumferences of their respective end faces.

[0054] In a second aspect of this application, a booster pump is provided, including a housing 100 and the above-mentioned cooling device of the booster pump. The motor 10 is arranged inside the housing 100 and can drive the booster pump to operate. The fan 20 is located outside the housing 100, and the rotating shaft of the fan 20 is rotatably connected to the housing 100.

[0055] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as these combinations of technical features do not conflict, they should all be considered as the scope described in this specification.

[0056] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A supercharger pump cooling device, characterized in that, It includes a motor (10), a fan (20) and a clutch structure (30). The rotating shafts of the motor (10) and the fan (20) are arranged along the same axis. The clutch structure (30) includes a fixed disk (31) and a movable component (32) respectively arranged on the two rotating shafts. The movable component (32) includes a movable disk (321) and a support disk (323) that are sequentially away from the fixed disk (31) along the axial direction. The movable disk (321) is fixed to the corresponding rotating shaft in the circumferential direction and is movably connected to the rotating shaft in the axial direction. The support disk (323) is fixed relative to the corresponding rotating shaft in the axial direction. The movable component (32) further includes an elastic member (322) for driving the movable disk (321) to move towards the support disk (323). One of the fixed disk (31), the movable disk (321) and the support disk (323) is a magnet, and one of the adjacent ones to this magnet is a magnet or a ferromagnetic body. The magnetic force direction between the two is opposite to the elastic force direction of the elastic member (322). When the temperature of the magnet is less than the critical temperature, the magnetic force between the above two is greater than the elastic force of the elastic member (322), and the movable disk (321) is disconnected from the fixed disk (31). When the temperature of the magnet is greater than or equal to the critical temperature, the magnetic force between the above two is less than the elastic force of the elastic member (322), and the movable disk (321) is in transmission connection with the fixed disk (31).

2. The supercharging pump cooling device according to claim 1, characterized in that, The support disk (323) is fixed to the rotating shaft where the movable disk (321) is located, and both ends of the elastic member (322) are fixed to the support disk (323) and the movable disk (321) respectively.

3. The cooling device for the booster pump according to claim 2, characterized in that, Pin holes are radially formed on the support disk (323), the fixed disk (31) and their respective corresponding rotating shafts, so that the support disk (323) and the fixed disk (31) can be fixed to their respective corresponding rotating shafts through pins.

4. The supercharging pump cooling device according to claim 3, characterized in that, Guide portions (40) extending along the axial direction are provided on the outer circumferential surfaces of the two rotating shafts. The movable disk (321) and the fixed disk (31) are both axially through-opened with guide holes (50). When the guide portion (40) is aligned with the guide hole (50), the pin holes on the support disk (323) corresponding to the rotating shaft and the pin holes on the fixed disk (31) corresponding to the rotating shaft are parallel to each other.

5. The supercharging pump cooling device according to claim 1, wherein Among the two end faces of the movable disk (321) and the fixed disk (31) that are close to each other, at least one clutch hole (31a) is formed on one of them, and a clutch protrusion (321a) that can be correspondingly matched with the clutch hole (31a) is fixed on the other.

6. The cooling device for the booster pump according to claim 5, wherein The two end faces of the movable disk (321) and the fixed disk (31) that are close to each other are both circular, and the clutch holes (31a) and the clutch protrusions (321a) are evenly distributed along the circumferences of their respective end faces.

7. The pressure boosting pump cooling device according to any one of claims 1 to 6, characterized in that The fixed disk (31) is fixed to the motor shaft (11) of the motor (10), and the movable assembly (32) is arranged on the fan shaft (21) of the fan (20).

8. The cooling device for the booster pump according to claim 7, wherein, The support disk (323) is a magnet, the movable disk (321) is a magnet or a ferromagnetic body, and the support disk (323) and the movable disk (321) attract each other.

9. The supercharging pump cooling device according to claim 8, wherein, The support disk (323) is a neodymium iron boron magnet, and the movable disk (321) is a ferromagnetic body.

10. A booster pump, characterized in that, It includes a housing (100) and the booster pump cooling device according to any one of claims 1 to 9. The motor (10) is arranged inside the housing (100) and can drive the booster pump to operate. The fan (20) is located outside the housing (100), and the shaft of the fan (20) is rotatably connected to the housing (100).

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