Heat dissipation device of booster pump and booster pump

Abstract

The invention relates to a heat dissipation device of a booster pump and the booster pump. The heat dissipation device of the booster pump comprises a coupling, a motor and a fan, the coupler comprises a first transmission disc and a second transmission disc which are arranged on the coupler and a rotating shaft of the motor respectively, a gap is formed between the first transmission disc and the second transmission disc, and the first transmission disc and / or the second transmission disc are / is thermal expansion workpieces. When the environment temperature is greater than or equal to the critical temperature, the first transmission disc and the second transmission disc are in expansion contact for transmission connection; when the environment temperature is lower than the critical temperature, the first transmission disc and the second transmission disc shrink and are separated to be disconnected; by utilizing the characteristic that the volume of the thermal expansion part correspondingly expands and shrinks along with the temperature rise and fall, when the temperature of the motor is close to the overheat temperature, the fan is automatically connected to the motor to accelerate heat dissipation, and when the temperature of the motor is reduced to be lower than the overheat temperature, the fan and the motor are automatically disconnected, so that the heat dissipation efficiency of the motor is improved on the premise of ensuring that the motor is not overheat. The heat dissipation energy consumption of the motor is reduced, and the power waste of the motor is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field related to water purifiers, and in particular to a booster pump heat dissipation device and a booster pump. Background Art

[0002] With the update and iteration of water purification products, water purifiers are developing towards smaller size and larger flow rate. That is, the power of the booster pumps used in water purifiers is getting bigger and bigger, while the size and space occupied by the booster pumps are decreasing. This will cause the heat generated by the booster pumps during operation to increase and become difficult to dissipate.

[0003] The current solution to this problem is mainly to add a fan to the booster pump or pump head to increase the heat dissipation effect through the rotation of the fan; in addition, in order to achieve integrated design and save costs, the fan's rotating shaft is generally connected to the rotating shaft of the motor in the pump to obtain power, but this will result in a portion of the power of the motor in the pump always being provided to the fan rotation.

[0004] In actual use 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 critical temperature is not reached, the fan rotates to cool the booster pump, which will cause power waste of the internal motor. Summary of the Invention

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

[0006] The present application first provides a booster pump heat dissipation device, comprising a coupling, a motor, and a fan; the coupling comprises a first transmission plate and a second transmission plate, which are respectively arranged on the coupling and the rotating shaft of the motor and have a gap therebetween, wherein the first transmission plate and / or the second transmission plate 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 and contact to form a transmission connection; when the ambient temperature is lower than the critical temperature, the first transmission disc and the second transmission disc contract and separate to disconnect.

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

[0009] With such a setting, compared with other arrangement methods, on the one hand, at least part of the first driving disk is embedded in the second driving disk, so the space occupied by the coupling is relatively small, which can leave space for the arrangement of other components, conforming to the current development trend of water purifier products towards small size and miniaturization; on the other hand, after the first driving disk expands, its entire outer peripheral surface is in driving connection with the second driving disk, and the contact area between the two is relatively large, so the driving connection is more stable.

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

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

[0012] In one embodiment, the thermal expansion coefficient range of the second driving disk is 7.8×10 -7 / K~36×10 -7 / K.

[0013] With such a setting, to ensure that under the same change in ambient temperature, the expansion and contraction amount of the first driving disk is greater than that of the second driving disk, so as to ensure that the first driving disk can be in driving connection with or disconnected from the second driving disk.

[0014] In one embodiment, the second driving disk is made of ceramic material.

[0015] In one embodiment, the first driving disk is provided with a through hole.

[0016] With such a setting, it is convenient for the thermal deformation of the first driving disk, so that the expansion deformation of the first driving disk after heating is more obvious, which is beneficial to the engagement and disengagement between the first driving disk and the second driving disk with temperature change.

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

[0018] With such a setting, the structural strength of the first driving disk can meet the actual use requirements, and the through hole has a relatively obvious improvement on the thermal deformation ability of the first driving disk.

[0019] In one embodiment, the second driving disk is provided with a receiving cavity, the inner side wall of the receiving cavity has second engaging teeth, the first driving disk is arranged in the receiving cavity, and the outer peripheral surface of the first driving disk has first engaging teeth that can be engaged with the second engaging teeth.

[0020] The second aspect of the present application provides a booster pump, which includes a housing and the above-mentioned booster pump heat dissipation device. The motor is arranged inside the housing and can drive the booster pump to operate. The fan is located outside the housing, and the rotating shaft of the fan is rotatably connected to the housing.

[0021] For the above-mentioned booster pump heat dissipation device, by designing the first driving disk and the second driving disk, and utilizing the characteristics that the volumes of the first driving disk and the second driving disk expand and contract correspondingly with the rise and fall of temperature, when the temperature of the motor approaches the overheat temperature, the fan is automatically connected to the motor for accelerated heat dissipation. After the temperature of the motor drops below the overheat temperature, the fan is automatically disconnected from the motor, thereby reducing the energy consumption of the motor for heat dissipation and avoiding the power waste of the motor on the premise of ensuring that the motor will not overheat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective view of the booster pump heat dissipation device of the present application;

[0023] Figure 2 is Figure 1 an exploded view of the coupling in

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

[0025] Reference numerals: 10, first driving disk; 11, through hole; 12, first engaging tooth; 20, second driving disk; 21, accommodating cavity; 22, second engaging tooth; 100, coupling; 200, motor; 300, fan; 1, housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the above objects, features, and advantages of the present invention more obvious 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 in order to fully understand 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 connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship 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. is based on the orientation or positional relationship shown in the drawings, and is 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 therefore should not be construed as a limitation of the present invention.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0029] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood 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 limited. 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.

[0030] In the present invention, unless otherwise clearly defined and limited, 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 indirectly in 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.

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

[0032] Please refer to Figure 1 and Figure 2 As shown, the present application first provides a supercharger pump heat dissipation device, including a coupling 100, a motor 200 and a fan 300; the coupling 100 includes a first drive disk 10 and a second drive disk 20, which are respectively disposed on the rotating shafts of the coupling 100 and the motor 200 and have a gap, wherein the first drive disk 10 and / or the second drive disk 20 is a thermally expandable part; when the ambient temperature is greater than or equal to the critical temperature, the first drive disk 10 and the second drive disk 20 expand and contact to be drivingly connected; when the ambient temperature is less than the critical temperature, the first drive disk 10 and the second drive disk 20 contract and disengage to disconnect the connection.

[0033] For the convenience of description, the critical temperature in the present 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 at the critical point close to overheating.

[0034] It can be understood that when the motor 200 runs at a low speed or starts to run, the 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, and the ambient temperature is less than the critical temperature. At this time, the first drive disk 10 and the second drive disk 20 are disconnected, and the motor 200 does not drive the fan 300 to rotate;

[0035] As the rotation speed of the motor 200 increases or it continues to run, the heat generated and accumulated by the motor 200 gradually increases, and the ambient temperature gradually rises. Thus, through the heat exchange of the air, the temperature of the coupling 100 also gradually rises, and the volumes of the first drive disk 10 and / or the second drive disk 20 increase due to the expansion with the rise of their respective temperatures until the ambient temperature rises to the critical temperature. At this time, the motor 200 is at the critical point close to overheating, and the first drive disk 10 and / or the second drive disk 20 just expand to be drivingly connected to each other, and the motor 200 drives the fan 300 to rotate through the coupling 100 to accelerate heat dissipation;

[0036] With the accelerated heat dissipation effect as the fan 300 rotates, the temperature of the motor 200 gradually decreases. Due to the certain lag in heat exchange through air, when the environment drops below the critical temperature, the temperature of the motor 200 has already dropped below its overheat temperature. At this time, the first drive disk 10 and / or the second drive disk 20 contract to disconnect again, and the motor 200 no longer drives the fan 300 to rotate;

[0037] Repeating the above process can automatically control the temperature of the motor 200 below the overheat temperature.

[0038] More specifically, according to the different models of the motor 200, the overheat temperature is also different. And in this application, the appropriate critical temperature can be determined according to the different overheat temperatures of the motor 200, and the appropriate first drive disk 10 and second drive disk 20 can be selected according to the critical temperature (when the ambient temperature rises to the critical temperature, the first drive disk 10 and the second drive disk 20 just expand to be in driving connection), so as to realize the overheat control of different models of the motor 200.

[0039] It is not difficult to understand that in this application, by designing the first drive disk 10 and the second drive disk 20, the characteristics that the volumes of the first drive disk 10 and the second drive disk 20 expand and contract correspondingly with the rise and fall of temperature are utilized. When the temperature of the motor 200 approaches the overheat temperature, the fan 300 is automatically connected to the motor 200 for accelerated heat dissipation. When the temperature of the motor 200 drops below the overheat temperature, the fan 300 is automatically disconnected from the motor 200. Thus, on the premise of ensuring that the motor 200 will not overheat, the energy consumption of the motor 200 for heat dissipation is reduced, and the power waste of the motor 200 is avoided.

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

[0041] Similarly optionally, the relative positional relationship between the rotating shaft of the motor 200 and the rotating shaft of the fan 300 includes, but is not limited to, parallel, perpendicular, coaxial, etc. As long as the shape of the coupling 100 is adjusted according to the relative positional relationship between the two to ensure that the first drive disk 10 and the second drive disk 20 can thermally expand and achieve driving connection after the ambient temperature rises, and contract and disconnect again after the ambient temperature drops.

[0042] For example: The rotating shaft of the motor 200 and the rotating shaft of the fan 300 are parallel to each other. There is a gap between the first drive disk 10 and the second drive disk 20 in the initial state along the radial direction, and when the ambient temperature reaches the critical temperature, the expansion amount of the first drive disk 10 and / or the first drive disk 20 is equal to the gap between the two.

[0043] Preferably, in combination with Figure 1 and Figure 2 As shown, in some embodiments, the rotating shafts of the motor 200 and the fan 300 are arranged along the same axis. The second transmission disk 20 is sleeved outside the first transmission disk 10, and the coefficient of thermal expansion of the first transmission disk 10 is greater than that of the second transmission disk 20.

[0044] Sleeving the second transmission disk 20 outside the first transmission disk 10, compared with other arrangement methods, on the one hand, at least part of the first transmission disk 10 is embedded in the second transmission disk 20, and the space occupied by the coupling 100 is less, which can leave space for the arrangement of other components, conforming to the current development direction of water purifier products towards small volume and miniaturization; on the other hand, after the first transmission disk 10 expands, the entire outer peripheral surface is in transmission connection with the second transmission disk 20, and the contact area between the two is relatively large, and the transmission connection is more stable.

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

[0046] With such a setting, to ensure that under the same amount of environmental temperature change, the expansion and contraction amount of the first transmission disk 10 is greater than that of the second transmission disk 20, so as to ensure that the first transmission disk 10 can be in transmission connection or disconnected from the second transmission disk 20.

[0047] Preferably, in some embodiments, the first transmission disk 10 is copper, iron-nickel-cobalt (FeNiCo) alloy or a polymer material with a relatively large expansion coefficient, such as a high-temperature resistant volume expansion type 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 is provided with a through hole 11.

[0049] It is not difficult to understand that opening the through hole 11 on the surface of the first transmission disk 10 can facilitate the thermal deformation of the first transmission disk 10, so that the expansion deformation of the first transmission disk 10 after heating is more obvious, which is beneficial to the engagement and disengagement between the first transmission disk 10 and the second transmission disk 20 with temperature change.

[0050] Preferably, in some embodiments, the area of the through hole 11 accounts for 40% - 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 driving disk 10. If the area of the through hole 11 is too small, the improvement of the thermal deformation ability of the first driving disk 10 will be relatively small. Through calculation, simulation testing and experimental verification, when the area of the through hole 11 accounts for 40% - 50% of the total area of the first driving disk 10, the structural strength of the first driving disk 10 can meet the actual use requirements, and the through hole 11 has a relatively obvious improvement on the thermal deformation ability of the first driving disk 10.

[0052] Optionally, please refer to Figure 2 As shown, the first driving disk 10 is provided with a plurality of through holes 11, and the plurality of through holes 11 are uniformly arranged along the axial direction of the first driving disk 10 to ensure that the first driving disk 10 expands relatively uniformly when heated, and at the same time, the structural strength of each position of the first driving disk 10 is also relatively uniform.

[0053] Preferably, the through hole 11 includes a small circular hole, a strip hole and a large circular hole. Among them, the small circular holes are uniformly arranged along the circumferential direction, the strip hole and the large circular hole are located outside the small circular holes, and the two are uniformly arranged at intervals along the circumferential direction.

[0054] More preferably, the first driving disk 10 is provided with 8 small circular holes, 4 strip holes and 4 large circular holes.

[0055] Please refer to Figure 2 As shown, in some embodiments, the second driving disk 20 is provided with a receiving cavity 21, the inner side wall of the receiving cavity 21 has second engaging teeth 22, the first driving disk 10 is disposed in the receiving cavity 21, and the outer peripheral surface of the first driving disk 10 has first engaging teeth 12 that can engage with the second engaging teeth 22.

[0056] Preferably, a plurality of second engaging teeth 22 are uniformly distributed along the circumferential direction on the inner side wall of the receiving cavity 21, and the outer peripheral surface of the first driving disk 10 has a plurality of first engaging teeth 12 corresponding to the second engaging teeth 22 one by one, so that the first driving disk 10 can be fully engaged with the second driving disk 20 after thermal expansion.

[0057] More preferably, the edges of the first engaging teeth 12 and the second engaging teeth 22 both have chamfers to play a certain guiding role and facilitate the engagement between the two.

[0058] Of course, in some other embodiments, the transmission connection manner between the first driving disk 10 and the second driving disk 20 can be other common transmission connection manners such as friction disk contact. As long as the two can thermally expand and achieve transmission connection after the environmental temperature rises, and contract and disconnect again after the environmental temperature drops, the present application does not make further limitations here.

[0059] In some embodiments, the first driving disk 10 is fixedly arranged on the rotating shaft of the motor 200, and the second driving disk 20 is fixedly arranged on the rotating shaft of the fan 300.

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

[0061] Please refer to Figure 1 As shown, in some embodiments, pin holes are radially opened on the first transmission plate 10, the second transmission plate 20 and their corresponding rotating shafts, so that the first transmission plate 10, the second transmission plate 20 and their 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 may also be fixed using other commonly used fixing methods, such as clamping, welding, etc., and this application does not make further limitations here.

[0063] Furthermore, in some embodiments, the outer circumferential surfaces of the two rotating shafts are provided with guide portions extending in the axial direction, and the first transmission plate 10 and the second transmission plate 20 are both provided with guide holes extending therethrough in the axial direction. When the guide portions are aligned with the guide holes, the first transmission plate 10, the second transmission plate 20 and the pin holes on their respective corresponding rotating shafts are parallel to each other; through the design of the guide portions and the guide holes, the alignment of the pin holes can be facilitated, so as to facilitate the installation of the booster pump heat dissipation device of the present application.

[0064] Please refer to Figure 3 As shown, the second aspect of the present application provides a booster pump, including a shell 1 and the above-mentioned booster pump heat dissipation device, the motor 200 is arranged inside the shell 1 and can drive the booster pump to operate, the fan 300 is located outside the shell 1 and the rotating shaft of the fan 300 is rotatably connected to the shell 1.

[0065] In some embodiments, elytra are evenly arranged on the outer circumference of the housing 1 to increase the heat dissipation area of the housing 1 and facilitate heat dissipation of the fan 300.

[0066] In some embodiments, a fairing is further provided on the outside of the shell 1, which covers the fan 300 and the elytra inside. The fairing has a hole on the side facing the fan 300, so that the outside air is introduced into the interior of the fairing through the fairing hole when the fan 300 rotates, and flows through the elytra around the boost pump to take away heat.

[0067] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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 above-described embodiments merely 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 modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A heat dissipation device for a booster pump, characterized in that, It includes a coupling (100), a motor (200) and a fan (300); The coupling (100) includes a first drive disk (10) and a second drive disk (20), which are respectively arranged on the rotating shafts of the coupling (100) and the motor (200) and have a gap. Among them, the first drive disk (10) and / or the second drive disk (20) is a thermally expandable part; When the ambient temperature is greater than or equal to the critical temperature, the first drive disk (10) and the second drive disk (20) expand and contact to be in driving connection; when the ambient temperature is less than the critical temperature, the first drive disk (10) and the second drive disk (20) contract and disengage to disconnect the connection.

2. The heat dissipation device for a booster pump according to claim 1, characterized in that, The rotating shafts of the motor (200) and the fan (300) are arranged along the same axis; the second drive disk (20) is sleeved outside the first drive disk (10), and the thermal expansion coefficient of the first drive disk (10) is greater than that of the second drive disk (20).

3. The supercharger pump heat dissipation device according to claim 1, characterized in that, The thermal expansion coefficient range of the first driving disk (10) is 17×10 -6 / K to 70×10 -6 / K.

4. The heat dissipation device of the booster pump according to claim 3, characterized in that, The first drive disk (10) is made of copper, iron-nickel-cobalt alloy or polymer material.

5. The heat dissipation device for a booster pump according to claim 3, wherein, The coefficient of thermal expansion of the second transmission disk (20) ranges from 7.8×10 -7 / K to 36×10 -7 / K.

6. The supercharger pump heat dissipation device according to claim 5, characterized in that, The second drive disk (20) is made of ceramic material.

7. The heat dissipation device of the booster pump according to claim 2, wherein, The first drive disk (10) is provided with a through hole (11).

8. The booster pump heat dissipation device according to claim 7, characterized in that, The area of the through hole (11) accounts for 40% - 50% of the total area of the first drive disk (10).

9. The heat dissipation device of the booster pump according to claim 2, wherein, The second drive disk (20) is provided with a receiving cavity (21), the inner side wall of the receiving cavity (21) has second engaging teeth (22), the first drive disk (10) is arranged in the receiving cavity (21), and the outer peripheral surface of the first drive disk (10) has first engaging teeth (12) that can engage with the second engaging teeth (22).

10. A booster pump, characterized in that, It includes a housing (1) and the supercharger heat dissipation device according to any one of claims 1 - 9. The motor (200) is arranged inside the housing (1) and can drive the supercharger to operate. The fan (300) is located outside the housing (1), and the rotating shaft of the fan (300) is rotatably connected to the housing (1).

Images