Miniature air pump with active heat dissipation function

Abstract

The embodiment of the utility model provides a miniature air pump with an active heat dissipation function. The miniature air pump comprises a shell, a motor and fan blades. The motor comprises a shell, an output shaft, a stator, a rotor and an end cover; a containing cavity, an air inlet and an air outlet are defined in the shell, and the containing cavity communicates with the air inlet and the air outlet; the end cover is connected with the shell, the stator is arranged in the shell and arranged on the periphery of the rotor in a sleeving mode, and the output shaft is connected with the fan blades. The opening is defined in the end cover, the fan blades are arranged in the end cover, the air outlet ends of the fan blades face the air outlet, the output shaft of the motor is coaxially connected with the fan blades, the motor can drive the fan blades to rotate in the process of driving the inflation assembly to work, and the heat dissipation effect of the miniature air pump is improved. And secondly, fan blades are arranged in the motor of the micro air pump driving inflation assembly, the air flowing speed in the active heat dissipation micro air pump can be increased under the condition that the motor and the size are not increased, and the heat dissipation effect of the active heat dissipation micro air pump is improved.

Description

Technical Field

[0001] This application relates to the field of pump technology, and in particular to a miniature air pump with active cooling. Background Technology

[0002] Air pumps are commonly used inflation devices.

[0003] In related technologies, since the outer shell temperature of the air pump is very high, and given the size of the air pump, it is impossible to set up a heat dissipation structure inside the air pump, when the air pump heats up severely, the common method is to put a silicone sleeve on the outer wall of the pump body to insulate the micro air pump that is actively cooling.

[0004] However, this method will cause the air pump to heat up more severely, resulting in unsatisfactory heat dissipation effect of the air pump in related technologies. Utility Model Content

[0005] This application provides a miniature air pump with active cooling to solve or alleviate one or more technical problems in the prior art.

[0006] This application provides a miniature air pump with active cooling, comprising: a housing, a motor, and fan blades; the motor includes a housing, an output shaft, a stator, a rotor, and an end cover; the housing defines a receiving cavity, an air inlet, and an air outlet, the receiving cavity being connected to the air inlet and the air outlet respectively; the end cover is connected to the housing, the stator is disposed within the housing and sleeved on the outer periphery of the rotor, and the output shaft is connected to the fan blades; the end cover defines an opening, the fan blades are disposed within the end cover, and the air outlet end of the fan blades faces the air outlet.

[0007] In some embodiments, the air outlet is disposed on one side of the housing in a first direction, and the air inlet is disposed on one side of the housing in a second direction, wherein the first direction and the second direction intersect.

[0008] In some embodiments, the opening and the air outlet are arranged opposite each other.

[0009] In some embodiments, at least one air inlet is defined on the housing.

[0010] In some embodiments, the cross-section of the accommodating cavity is L-shaped.

[0011] In some embodiments, the system further includes an inflation assembly, which is connected to a motor drive, and the inflation assembly and the motor are spaced apart along a second direction.

[0012] In some embodiments, the inflation assembly includes a cylinder, a connecting rod, an eccentric shaft, a transmission gear, and a piston. The transmission gear and the output shaft are coaxially connected. The eccentric shaft is disposed on the transmission gear. One end of the connecting rod is rotatably connected to the eccentric shaft. The piston is disposed at the other end of the connecting rod and is slidably disposed in the cylinder.

[0013] In some embodiments, the transmission gear and the fan blades are disposed on both sides of the rotor in the first direction.

[0014] In some embodiments, the side of the cylinder away from the motor is positioned opposite the air inlet;

[0015] In some embodiments, a gap is defined between the end cap and the air outlet.

[0016] In some embodiments, the device further includes a separator and a battery, the separator being disposed within the housing, the motor and fan blades being disposed on one side of the separator, and the battery being disposed on the other side of the separator.

[0017] The embodiments of this application have the following beneficial effects:

[0018] Based on the aforementioned active cooling miniature air pump, this application coaxially connects the motor's output shaft to the fan blades, allowing the motor to simultaneously drive the fan blades while powering the inflation component. Furthermore, by aligning the fan blades' outlet towards the air outlet, the motor's rotation of the fan blades directs airflow from inside the casing towards the outlet. This configuration allows external air to enter the housing through the inlet and exit through the outlet, thus removing heat from the motor and inflation component within the active cooling miniature air pump. Since the motor synchronously drives the fan blades, there is no need for a separate cooling component within the active cooling miniature air pump. This improves the cooling effect and reduces the space occupied by a cooling component, thereby reducing the overall size of the active cooling miniature air pump and enhancing its portability. Secondly, by incorporating fan blades within the motor driving the inflation component, the airflow speed inside the active cooling miniature air pump can be increased without increasing the motor's size, further enhancing its cooling effect. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0022] Figure 1 A schematic diagram of the structure according to an embodiment of this application is shown;

[0023] Figure 2 A cross-sectional view is shown according to an embodiment of this application;

[0024] Figure 3 A schematic diagram showing the connection relationship between the motor and the inflation assembly according to an embodiment of this application is provided.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. A miniature air pump with active cooling;

[0027] 10. Outer casing; 110. Receptacle; 120. Air inlet; 130. Air outlet;

[0028] 20. Motor; 210. Housing; 211. Air inlet; 220. Output shaft; 230. Stator; 240. Rotor; 250. End cover; 251. Opening;

[0029] 30. Fan blades;

[0030] 40. Inflation assembly; 410. Cylinder; 420. Connecting rod; 430. Eccentric shaft; 440. Transmission gear; 450. Piston;

[0031] 50. Battery;

[0032] 60. Partition;

[0033] X, the first direction; Y, the second direction. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] The following application provides many different embodiments or examples for implementing different structures of this application. To simplify this application, components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0036] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or movement change, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0037] See Figures 1-3 This application provides an active cooling miniature air pump 1, which is used to connect to the valve of a tire, balloon, or swim ring to inflate the tire, balloon, or swim ring. The active cooling miniature air pump 1 includes a housing 10, a motor 20, and a fan blade 30. The housing 10 defines a receiving cavity 110, an air inlet 120, and an air outlet 130, with the receiving cavity 110 communicating with the air inlet 120 and the air outlet 130, respectively. The motor 20 is disposed within the receiving cavity 110, and the output shaft 220 of the motor 20 is coaxially connected to the fan blade 30. The motor 20 can drive the output shaft 220 to rotate, thereby driving the fan blade 30 to rotate, with the air outlet end of the fan blade 30 facing the air outlet 130.

[0038] According to the technology of this application, the motor 20 can drive the inflation component 40 of the actively cooled miniature air pump 1 to output gas, thereby inflating a tire, balloon, or swimming ring. This application connects the output shaft 220 of the motor 20 coaxially with the fan blade 30, so that the motor 20 can simultaneously drive the fan blade 30 to rotate while driving the inflation component 40. Furthermore, by setting the air outlet of the fan blade 30 to face the air outlet 130, the rotation of the fan blade 30 by the motor 20 can drive the air inside the casing 10 to be blown out towards the air outlet 130. With this configuration, the actively cooled miniature air pump... 1. External air can enter the accommodating cavity 110 through the air inlet 120 and be blown out through the air outlet 130, thereby removing the heat from the motor 20 and the air filling component 40 inside the actively cooling micro air pump 1. Furthermore, the motor 20 drives the fan blade 30 to rotate synchronously during operation, eliminating the need to install a heat dissipation component inside the actively cooling micro air pump 1. This improves the heat dissipation effect of the actively cooling micro air pump 1 and reduces the space occupied by the heat dissipation component, thereby reducing the volume of the actively cooling micro air pump 1 of this application and improving its convenience.

[0039] In some embodiments, see Figure 2 and Figure 3 The motor 20 includes a housing 210, an output shaft 220, a stator 230, a rotor 240, and an end cover 250. The end cover 250 is connected to the housing 210. The stator 230 is disposed inside the housing 210 and sleeved on the outer periphery of the rotor 240. The output shaft 220 is connected to the rotor 240. The end cover 250 defines an opening 251, and a fan blade 30 is disposed inside the end cover 250. Thus, the fan blade 30 is disposed inside the motor 20 of the active cooling micro air pump 1 driving the air filling assembly 40. In this way, the fan blade 30 is disposed inside the motor 20 of the active cooling micro air pump 1, which drives the air filling assembly 40. This increases the air flow speed inside the active cooling micro air pump 1 without increasing the size of the motor 20, thereby improving the heat dissipation effect of the active cooling micro air pump 1.

[0040] For example, end cap 250 and housing 210 are spaced apart along a first direction X, and end cap 250 and housing 210 are detachably connected. Stator 230 is fixedly disposed on the inner wall of housing 210. Stator 230 can be a stationary fixed part of motor 20, and stator 230 can generate a rotating magnetic field after current is applied. Rotor 240 can be the rotating part of motor 20. For example, if motor 20 is a permanent magnet synchronous motor 20, and rotor 240 is used in permanent magnet synchronous motor 20, rotor 240 can generate a constant magnetic field and can rotate under the action of rotating magnetic field generated by stator 230 based on the principle of like poles repelling and unlike poles attracting. If motor 20 is an asynchronous induction motor 20, and rotor 240 is used in asynchronous induction motor 20, rotor 240 can obtain an electromagnetic torque and rotate under the action of rotating magnetic field generated by stator 230 based on the phenomenon of electromagnetic induction. Thus, this application can drive the output shaft 220 to rotate while the stator 230 drives the rotor 240 to rotate, thereby driving the fan blade 30 to rotate.

[0041] For example, the air inlet 120 may include multiple holes through which air from outside the pump body enters the receiving cavity 110. It is understood that the number of holes can be selected based on the appearance of the actively cooling micro air pump 1 and the required airflow rate, and is not limited herein.

[0042] For example, the air outlet 130 may include multiple holes through which air from the accommodating cavity 110 is output to the outside of the actively cooling miniature air pump 1. It is understood that the number of holes can be selected according to the appearance of the actively cooling miniature air pump 1 and the required airflow, and is not limited herein.

[0043] In some embodiments, see Figures 1 to 3 The air outlet 130 is located on one side of the housing 10 in the first direction X, and the air inlet 120 is located on one side of the housing 10 in the second direction Y. The first direction X and the second direction Y intersect. This arrangement allows for a more rational layout of the active cooling micro air pump 1 and increases the length of the accommodating cavity 110 between the air inlet 120 and the air outlet 130, thereby increasing the airflow distance within the accommodating cavity 110. Specifically, the first direction X and the second direction Y are perpendicular.

[0044] The inflation component 40 and the motor 20 are spaced apart along the second direction Y. In order to improve the volume and layout rationality of the active cooling micro air pump 1, the output shaft 220 of the motor 20 needs to extend along the first direction X, thereby reducing the length of the active cooling micro air pump 1 in the second direction Y. Therefore, the fan blade 30 sleeved on the output shaft 220 of the motor 20 also blows air towards the first direction X. In order to avoid the air blown out by the fan blade 30 being blocked, the air outlet 130 is set on one side of the outer shell 10 in the first direction X, which is conducive to improving the smoothness of air flow inside the active cooling micro air pump 1.

[0045] The term "perpendicular" includes not only absolute perpendicularity, but also approximate perpendicularity as commonly understood in engineering, such as the angle between two lines, between a line and a surface, or between two surfaces, which is between 89° and 91°.

[0046] In some embodiments, the opening 251 and the air outlet 130 are arranged opposite to each other, so that the air blown out by the fan blade 30 can pass through the opening 251 and the air outlet 130 in sequence and be discharged to the outside of the actively cooling micro air pump 1.

[0047] In some embodiments, see Figure 2 The housing 210 is provided with at least one air inlet 211. Air from outside the actively cooling micro air pump 1 enters the accommodating cavity 110 through the air inlet 120 and then enters the interior of the housing 210 through the air inlet 211. The air inside the housing 210 is driven by the fan blades 30 to pass through the opening 251 and the air outlet 130 in sequence and then discharged to the outside of the actively cooling micro air pump 1.

[0048] It should be noted that the air inlet 211 can be a gap formed during the assembly of the housing 210, or it can be an air inlet 211 opened on the housing 210, and there is no limitation here.

[0049] In some embodiments, the cross-section of the accommodating cavity 110 is L-shaped. This arrangement allows for a more rational layout of the active cooling micro air pump 1 and increases the length of the accommodating cavity 110 between the air inlet 120 and the air outlet 130, thereby increasing the airflow distance within the accommodating cavity 110.

[0050] In some embodiments, see Figure 2 This application also includes an inflation component 40, which is connected to a motor 20 via a transmission. The inflation component 40 and the motor 20 are spaced apart along the second direction Y. The motor can drive the inflation component 40 to work, thereby realizing the inflation function.

[0051] In some embodiments, see Figure 2The inflation assembly 40 includes a cylinder 410, a connecting rod 420, an eccentric shaft 430, a transmission gear 440, and a piston 450. The transmission gear 440 and the output shaft 220 are coaxially connected. The eccentric shaft 430 is mounted on the transmission gear 440. One end of the connecting rod 420 is rotatably connected to the eccentric shaft 430, and the piston 450 is mounted on the other end of the connecting rod 420. The piston 450 is slidably mounted within the cylinder 410. The rotation of the transmission gear 440 drives the connecting rod 420 to perform a crank reciprocating motion, causing the piston 450 to reciprocate within the cylinder 410, thus realizing the inflation function of the inflation assembly 40.

[0052] In some embodiments, the transmission gear 440 and the fan blade 30 are disposed on both sides of the rotor 240 in the first direction X. This arrangement allows the rotor 240 to rotate simultaneously, thereby driving the fan blade 30 and the transmission gear 440 to rotate. On the other hand, the arrangement of the transmission gear 440 and the fan blade 30 on both sides of the rotor 240 in the first direction X can prevent mutual interference between the transmission gear 440 and the fan blade 30.

[0053] In some embodiments, the side of the cylinder 410 away from the motor 20 is positioned opposite to the air inlet 120, and a small air passage is formed between the side of the cylinder 410 away from the motor 20 and the air inlet 120.

[0054] In some embodiments, a gap is defined between the end cap 250 and the air outlet 130.

[0055] In some embodiments, this application further includes a separator 60 and a battery 50. The separator 60 is disposed inside the housing 10, and the separator 60 divides the housing 10 into two isolated cavities. The motor 20 and the fan blade 30 are disposed on one side of the separator 60, and the battery 50 is disposed on the other side of the separator 60. This arrangement reduces the heat transferred from the inflation assembly 40 to the battery 50 and improves the service life of the battery 50.

[0056] In summary, compared with the prior art, this application has the following beneficial effects:

[0057] According to the technology of this application, the motor 20 can drive the inflation component 40 of the actively cooled miniature air pump 1 to output gas, thereby inflating a tire, balloon, or swimming ring. This application connects the output shaft 220 of the motor 20 coaxially with the fan blade 30, so that the motor 20 can simultaneously drive the fan blade 30 to rotate while driving the inflation component 40. Furthermore, by setting the air outlet of the fan blade 30 to face the air outlet 130, the rotation of the fan blade 30 by the motor 20 can drive the air inside the casing 10 to be blown out towards the air outlet 130. With this configuration, the actively cooled miniature air pump 1... External air enters the accommodating cavity 110 through the air inlet 120 and is blown out through the air outlet 130, thereby removing the heat from the motor 20 and the air filling component 40 inside the actively cooled miniature air pump 1. Furthermore, the motor 20 synchronously drives the fan blade 30 to rotate during operation, eliminating the need for a heat dissipation component inside the actively cooled miniature air pump 1. This improves the heat dissipation effect of the actively cooled miniature air pump 1 and reduces the space occupied by the heat dissipation component, thereby reducing the volume of the actively cooled miniature air pump 1 of this application and improving its convenience.

[0058] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0059] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0060] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A miniature air pump (1) for active heat dissipation, characterized in that, include: The fan comprises a housing (10), a motor (20), and fan blades (30); the motor (20) includes a housing (210), an output shaft (220), a stator (230), a rotor (240), and an end cover (250); the housing (10) defines a receiving cavity (110), an air inlet (120), and an air outlet (130), the receiving cavity (110) being connected to the air inlet (120) and the air outlet (130) respectively; The end cap (250) is connected to the housing (210), the stator (230) is disposed inside the housing (210), the stator (230) is sleeved on the outer periphery of the rotor (240), and the output shaft (220) is connected to the fan blade (30). The end cap (250) defines an opening (251), the fan blade (30) is disposed inside the end cap (250), and the air outlet end of the fan blade (30) faces the air outlet (130).

2. The micro air pump (1) for active heat dissipation according to claim 1, characterized in that, The air outlet (130) is located on one side of the outer casing (10) in the first direction (X), and the air inlet (120) is located on one side of the outer casing (10) in the second direction (Y). The first direction (X) and the second direction (Y) intersect.

3. The micro air pump (1) for active heat dissipation according to claim 1, characterized in that, The opening (251) and the air outlet (130) are arranged opposite to each other.

4. The micro air pump (1) for active heat dissipation according to claim 1, characterized in that, The housing (210) is provided with at least one air inlet (211).

5. The micro air pump (1) for active heat dissipation according to claim 1, characterized in that, The cross-section of the accommodating cavity (110) is L-shaped.

6. The micro air pump (1) for active heat dissipation according to claim 2, characterized in that, It also includes an inflation assembly (40), which is connected to the motor (20) and the inflation assembly (40) are spaced apart along the second direction (Y).

7. The micro air pump (1) for active heat dissipation according to claim 6, characterized in that, The inflation assembly (40) includes a cylinder (410), a connecting rod (420), an eccentric shaft (430), a transmission gear (440), and a piston. The transmission gear (440) and the output shaft (220) are coaxially connected. The eccentric shaft (430) is mounted on the transmission gear (440). One end of the connecting rod (420) is rotatably connected to the eccentric shaft (430). The piston is mounted on the other end of the connecting rod (420) and is slidably mounted inside the cylinder (410).

8. The micro air pump (1) for active heat dissipation according to claim 7, characterized in that, The transmission gear (440) and the fan blade (30) are disposed on both sides of the rotor (240) in the first direction (X).

9. The micro air pump (1) for active heat dissipation according to claim 7, characterized in that, The cylinder (410) is positioned opposite the air inlet (120) on the side away from the motor (20).

10. The micro air pump (1) for active heat dissipation according to claim 1, characterized in that, It also includes a partition (60) and a battery (50), the partition (60) being disposed inside the housing (10), the motor (20) and the fan blade (30) being disposed on one side of the partition (60), and the battery (50) being disposed on the other side of the partition (60).

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