Air pump

Abstract

An inflation device, specifically an air pump, comprising an electric motor support. The electric motor support comprises a first flow guide shell, a second flow guide shell and a mounting shell, wherein the first flow guide shell and the second flow guide shell are coaxially arranged, a first air duct being reserved between the first flow guide shell and the second flow guide shell; and the mounting shell is arranged at the top of the second flow guide shell, the mounting shell being provided with fan blades and an electric motor, the electric motor passing through the mounting shell to connect to the fan blades, and the fan blades allowing air to flow into the first air duct. The electric motor is arranged inside the second flow guide shell, and a second air duct is provided between the second flow guide shell and the electric motor, the second flow guide shell being provided with a ventilation opening for communicating the first air duct with the second air duct, allowing some of the air from the first air duct to flow into the second air duct through the ventilation opening to cool the electric motor. In the air pump, some of the air from the first air duct flows into the second air duct through the ventilation opening to cool the electric motor in the second air duct; thus, the problem of the electric motor overheating in the air pump can be effectively solved, significantly reducing the temperature on the surface of the electric motor, thus greatly prolonging the service life of the electric motor.

Description

An air pump Technical Field

[0001] The utility model relates to the field of inflation equipment, and further relates to an air pump. Background Art

[0002] At present, the motors of most air pumps are built inside the air pumps, and the heat dissipation performance of the motors is extremely poor. Especially when working at high power, the motors are easily damaged due to excessive temperature, which affects the service life of the motors. The motors may even overheat and cause spontaneous combustion, posing serious safety hazards.

[0003] Utility Model Content

[0004] In response to the above technical problems, the purpose of the present utility model is to provide an air pump, in which part of the airflow in the first air duct reaches the second air duct through the vent and cools the motor in the second air duct, which can effectively solve the problem of motor heating in the air pump, significantly reduce the temperature of the motor surface, and greatly improve the life of the motor.

[0005] In order to achieve the above object, the utility model provides an air pump, comprising a motor bracket; the motor bracket comprises a first flow guide shell, a second flow guide shell and a mounting shell;

[0006] The first guide shell and the second guide shell are coaxially arranged, a first air duct is left between the first guide shell and the second guide shell, the mounting shell is arranged on the top of the second guide shell, the mounting shell is provided with fan blades, and a motor is further provided under the mounting shell, the motor passes through the mounting shell and is connected to the fan blades, and the fan blades rotate to allow airflow to enter the first air duct;

[0007] The motor is arranged inside the second air guide shell and a second air duct is provided between the second air guide shell and the motor. A vent is provided on the second air guide shell, and the vent connects the first air duct and the second air duct, so that part of the airflow in the first air duct can pass through the vent to reach the second air duct and cool the motor.

[0008] In some embodiments, the system further includes a first fairing and a second fairing, wherein the first fairing is connected to the first guide shell, and the second fairing is connected to the second guide shell, a space is left between the first fairing and the second fairing and is connected to the first air duct, and a first air outlet is provided at one end of the first fairing away from the motor bracket;

[0009] The interior of the second fairing is communicated with the second air duct, and the end of the motor away from the mounting shell is relatively located inside the second fairing. The end of the second fairing away from the motor bracket is provided with a second air outlet.

[0010] In some embodiments, the vents are arranged in a circumferential manner on the second air guide shell, and the vents are relatively located in the middle of the motor.

[0011] In some embodiments, the motor bracket also includes a third guide shell, which is arranged below the mounting shell and surrounds the motor, and the second air duct is left between the third guide shell and the second guide shell, and the end of the third guide shell away from the mounting shell is relatively located in the center of the motor.

[0012] In some embodiments, the radial cross-section of the second fairing gradually decreases following the airflow direction of the second air duct, so that the airflow reaching the second air duct flows toward the end of the motor away from the mounting shell and gathers toward the second air outlet; the radial cross-section of the first fairing also gradually decreases following the airflow direction of the first air duct, so that the airflow passing through the first air duct gathers toward the first air outlet.

[0013] In some embodiments, the second fairing is always located inside the first fairing, the second air outlet is relatively located inside the first fairing, and the second air outlet is coaxially arranged with the first air outlet.

[0014] In some embodiments, a first mounting block is further provided between the first guide shell and the second guide shell, the first mounting block is along the airflow direction of the first air duct, and the ventilation holes are provided between adjacent first mounting blocks.

[0015] In some embodiments, a second mounting block is further provided between the second guide shell and the third guide shell, a portion of the second mounting block extends out of the second guide shell, and the second fairing is fixed to the second guide shell through the second mounting block.

[0016] In some embodiments, an air inlet shell is further included, which is connected to the top of the first guide shell and is relatively located above the fan blades. An air inlet is also provided on the air inlet shell, and the air inlet is coaxially arranged with the first guide shell.

[0017] The motor support is disposed in the housing, the housing is provided with a first opening and a second opening, the first opening is communicated with the air inlet of the air inlet housing, and the second opening is communicated with the first air outlet of the first fairing;

[0018] A battery and a main board are also provided in the shell, and the battery is electrically connected to the motor and the main board.

[0019] Compared with the prior art, the air pump provided by the present invention has at least one of the following beneficial effects:

[0020] 1. Part of the airflow from the first air duct reaches the second air duct through the vents and cools the motor in the second air duct, which can effectively solve the problem of motor heating in the air pump, significantly reduce the temperature of the motor surface, and greatly increase the life of the motor.

[0021] 2. The vent is relatively located in the middle of the motor. At the same time, the heat source of the motor is mostly concentrated at the tail of the motor. The airflow from the first air duct to the second air duct directly passes through the middle of the motor to the tail, dissipating heat to the tail of the motor in a targeted manner, significantly reducing the temperature of the tail of the motor and achieving better heat dissipation effect. At the same time, it reduces airflow consumption and increases airflow velocity.

[0022] 3. The third guide shell is arranged on the outside of the motor to block and guide the airflow entering the second fan, control the airflow to the tail of the motor, and increase the airflow velocity in the second air duct.

[0023] 4. The radial cross-section of the second fairing gradually decreases, which can rectify the airflow in the second air duct, so that the airflow in the second air duct reaches and passes through the tail end of the motor faster, thereby improving the heat dissipation effect of the motor; at the same time, it accelerates the airflow flow in the second air duct, increases the airflow flow through the second air outlet, and enhances the air outlet effect of the air pump.

[0024] 5. The second air outlet is relatively located inside the first fairing, so that the airflow of the second air duct first reaches the first air duct through the second air outlet, and then mixes with the airflow of the first air duct before flowing out from the first air outlet, which further enhances the air output of the first air outlet, avoids the airflow turbulence between the first air outlet and the second air outlet, prevents the air pump from having turbulent and poor air outlet, and reduces noise; at the same time, the airflow in the second air duct is first mixed with the airflow in the first air duct, reducing the temperature of the gas flowing out of the second air duct, preventing the air pump from blowing out gas with too high a temperature, damaging gas parts, and improving the safety performance of the air pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0026] Figure 1 is an overall view of an air pump;

[0027] FIG2 is a structural diagram of a motor bracket;

[0028] Figure 3 is an installation diagram of the motor;

[0029] FIG4 is an assembly cross-sectional view of the motor bracket;

[0030] Figure 5 is an exploded view of the air pump;

[0031] FIG6 is a cross-sectional view of the air pump;

[0032] FIG7 is a cross-sectional view of the outer shell.

[0033] Description of Figure Numbers:

[0034] Motor bracket 1, first air guide shell 11, first mounting block 111, second air guide shell 12, vent 121, second mounting block 122, mounting shell 13, third air guide shell 14, first air duct 15, second air duct 16, first fairing 2, first air outlet 21, second fairing 3, second air outlet 31, air inlet shell 4, air inlet 41, fan blades 5, motor 6, outer shell 7, first opening 71, second opening 72, battery 8, mainboard 9. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0036] To simplify the drawings, only the parts relevant to the utility model are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0037] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0038] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0039] In addition, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the present utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be considered as the scope of protection of the present utility model.

[0040] 1 to 4 , the utility model provides an air pump, comprising a motor bracket 1; the motor bracket 1 comprises a first air guide shell 11, a second air guide shell 12 and a mounting shell 13; the first air guide shell 11 and the second air guide shell 12 are coaxially arranged, and a first air duct 15 is left between the first air guide shell 11 and the second air guide shell 12; the mounting shell 13 is arranged on the top of the second air guide shell 12, and a fan blade 5 is provided on the mounting shell 13, and a motor 6 is also provided below the mounting shell 13, the motor 6 passes through the mounting shell 13 to connect to the fan blade 5, and the fan blade 5 rotates to allow the air flow to enter the first air duct 15; the motor 6 is arranged inside the second air guide shell 12 and a second air duct 16 is provided between the second air guide shell 12 and the motor 6, and a vent 121 is provided on the second air guide shell 12, the vent 121 connects the first air duct 15 and the second air duct 16, so that part of the air flow in the first air duct 15 can reach the second air duct 16 through the vent 121 and cool the motor 6.

[0041] In this embodiment, part of the airflow from the first air duct 15 reaches the second air duct 16 through the vent 121 and cools the motor 6 in the second air duct 16, which can effectively solve the problem of heating of the motor 6 in the air pump, significantly reduce the surface temperature of the motor 6, and greatly improve the life of the motor 6.

[0042] Specifically, mounting housing 13 is disposed above second air guide housing 12. Fan blades 5 are positioned above mounting housing 13, and motor 6 is positioned below. The output end of motor 6 passes through mounting housing 13 and connects to fan blades 5. Mounting housing 13 seals one end of second air guide housing 12, separating motor 6 from fan blades 5. Mounting housing 13 also includes mounting holes for mounting motor 6. Ventilation openings 121 are disposed around second air guide housing 12 at intervals, connecting first air duct 15 and second air duct 16. Part of the airflow from first air duct 15 passes through vents 121 to reach second air duct 16 and cool the surface of motor 6.

[0043] It is worth noting that, referring to Figure 5, the air pump also includes a first fairing 2 and a second fairing 3. The first fairing 2 is connected to the first guide shell 11, and the second fairing 3 is connected to the second guide shell 12. A space is left between the first fairing 2 and the second fairing 3 and is connected to the first air duct 15. The end of the first fairing 2 away from the motor bracket 1 is provided with a first air outlet 21; the interior of the second fairing 3 is connected to the second air duct 16, and the end of the motor 6 away from the mounting shell 13 is relatively located inside the second fairing 3. The end of the second fairing 3 away from the motor bracket 1 is provided with a second air outlet 31. In this embodiment, the first fairing 2 and the first guide shell 11, the second fairing 3 and the second guide shell 12 are separated, which facilitates installation and disassembly. In a modified embodiment, the first fairing 2, the first guide shell 11 and / or the second fairing 3, the second guide shell 12 can also be integrally formed, that is, the first fairing 2 and the second fairing 3 are part of the motor bracket 1.

[0044] Further, referring to FIG. 4 , the vents 121 are arranged in a circumferential manner on the second air guide shell 12 , and the vents 121 are relatively located in the middle of the motor 6 .

[0045] In this embodiment, the vent 121 is relatively located in the middle of the motor 6, and the heat dissipation source of the motor 6 is mostly concentrated at the tail of the motor 6. The airflow from the first air duct 15 to the second air duct 16 directly passes through the middle of the motor 6 to the tail, and the tail of the motor 6 is dissipated in a targeted manner, which significantly reduces the temperature of the tail of the motor 6 and has a better heat dissipation effect; at the same time, it reduces the airflow consumption and increases the airflow velocity.

[0046] Specifically, the vent 121 is located relatively in the middle of the motor 6. The airflow passes through the vent 121 and the tail of the motor 6, dissipating heat from high heat sources at the tail of the motor 6 such as carbon brushes, making the heat dissipation more targeted.

[0047] Furthermore, the motor bracket 1 also includes a third air guide shell 14, which is arranged below the mounting shell 13 and surrounds the motor 6. A second air duct 16 is left between the third air guide shell 14 and the second air guide shell 12. The end of the third air guide shell 14 away from the mounting shell 13 is relatively located in the center of the motor 6.

[0048] In this embodiment, the third guide shell 14 is arranged outside the motor 6 to block and guide the airflow entering the second air duct 16, control the airflow to flow to the tail of the motor 6, and increase the airflow velocity in the second air duct 16.

[0049] 6 , the radial cross-section of the second fairing 3 gradually decreases following the airflow direction of the second air duct 16 , so that the airflow reaching the second air duct 16 flows toward the end of the motor 6 away from the mounting shell 13 and gathers toward the second air outlet 31 .

[0050] In this embodiment, the radial cross-section of the second fairing 3 gradually decreases, which can rectify the airflow in the second air duct 16, so that the airflow in the second air duct 16 reaches and passes through the tail end of the motor 6 faster, thereby improving the heat dissipation effect of the motor 6; at the same time, it accelerates the airflow flow rate of the second air duct 16, thereby increasing the airflow flow rate passing through the second air outlet 31, thereby enhancing the air outlet effect of the air pump.

[0051] Specifically, the radial cross-section of the first fairing 2 also gradually decreases following the direction of the airflow in the first air duct 15, so that the airflow passing through the first air duct 15 is gathered toward the first air outlet 21. The first fairing 2 and the second fairing 3 have the same function, which is to increase the airflow rate in the first air duct 15. It is worth noting that the second fairing 3 is always located inside the first fairing 2, and the second air outlet 31 is relatively located inside the first fairing 2 and is coaxially arranged with the first air outlet 21. The first fairing 2, the second fairing 3 and the motor 6 housing are all coaxially arranged to ensure uniform airflow from the air pump. The second air outlet 31 is positioned relative to the first fairing 2, allowing the airflow from the second air duct 16 to first reach the first air duct 15 through the second air outlet 31 before mixing with the airflow from the first air duct 15 and exiting through the first air outlet 21. This means that the airflow from the second air duct 16 first enters the first air duct 15 before exiting through the first air outlet 21. This further increases the air output from the first air outlet 21, avoids airflow turbulence between the first and second air outlets 21, prevents turbulent and blocked air output from the air pump, and reduces noise. Furthermore, the airflow in the second air duct 16 first mixes with the airflow in the first air duct 15, lowering the temperature of the air flowing out of the second air duct 16. This prevents excessively high temperatures from blowing out the air pump, which could damage other parts of the equipment and improve the safety of the air pump.

[0052] Further, referring to Figures 2 and 3, a first mounting block 111 is further provided between the first guide shell 11 and the second guide shell 12. The first mounting block 111 is along the airflow direction of the first air duct 15, and ventilation holes are provided between adjacent first mounting blocks 111.

[0053] In this embodiment, the first mounting block 111 is arranged around the first guide shell 11 and the second guide shell 12 to strengthen the connection strength between the first guide shell 11 and the second guide shell 12. The first mounting block 111 also plays a guiding role, allowing the airflow to pass through the first air duct 15 faster and more orderly.

[0054] Specifically, the first mounting block 111 includes but is not limited to a sheet shape, and may also be a waist-round shape, an elliptical shape, etc. As long as the first mounting block 111 can play a fixing and diverting role, it is within the protection scope of this application.

[0055] Furthermore, a second mounting block 122 is disposed around the second guide shell 12 and the third guide shell 14 . Part of the second mounting block 122 extends out of the second guide shell 12 , and the second fairing 3 is fixed to the second guide shell 12 via the second mounting block 122 .

[0056] In this embodiment, a second mounting block 122 is further provided around the second flow guide shell 12 and the third flow guide shell 14 , and the second mounting block 122 plays a role of fixing and guiding.

[0057] Specifically, a portion of the second mounting block 122 extends out of the second air guide housing 12 , and the second fairing 3 is fixedly connected to the second air guide housing 12 via screws to the second mounting block 122 .

[0058] Furthermore, referring to Figure 1, it also includes an air inlet shell 4, which is connected to the top of the first guide shell 11 and is relatively located above the fan blades 5. The air inlet shell 4 is also provided with an air inlet 41, which is coaxially arranged with the first guide shell 11.

[0059] Furthermore, referring to Figure 7 , an outer shell 7 is provided on the outside of the air pump. A space is provided between the outer shell 7, the motor bracket 1, and the first fairing 2 to protect the motor bracket 1 and accommodate other components, such as the battery 8. Specifically, the outer shell 7 comprises an upper shell and a lower shell, which are connected vertically and mounted to facilitate disassembly and maintenance. The motor bracket 1 is disposed within the outer shell 7. The outer shell 7 is provided with a first opening 71 and a second opening 72. The first opening 71 communicates with the air inlet 41 of the air inlet housing 4, and the second opening 72 communicates with the first air outlet 21 of the first fairing 2. The outer shell 7 also houses a battery 8 and a main board 9, which are electrically connected to the motor 6 and the main board 9. The main board 9 is mounted on the inner side of the outer shell 7 via a main board bracket.

[0060] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An air pump, characterized in that: It includes a motor bracket, and the motor bracket includes a first flow guide shell, a second flow guide shell and a mounting shell; The first guide shell and the second guide shell are coaxially arranged, a first air duct is left between the first guide shell and the second guide shell, the mounting shell is arranged on the top of the second guide shell, a fan blade is arranged on the mounting shell, a motor is further arranged under the mounting shell, the motor passes through the mounting shell and is connected to the fan blade, and the fan blade rotates to make the air flow enter the first air duct; The motor is arranged inside the second air guide shell and a second air duct is arranged between the second air guide shell and the motor. A vent is arranged on the second air guide shell, and the vent connects the first air duct and the second air duct, so that part of the airflow in the first air duct can reach the second air duct through the vent and cool the motor.

2. An air pump according to claim 1, characterized in that: It also includes a first fairing and a second fairing, wherein the first fairing is connected to the first guide shell, the second fairing is connected to the second guide shell, a space is left between the first fairing and the second fairing and is connected to the first air duct, and a first air outlet is provided at one end of the first fairing away from the motor bracket; The interior of the second fairing is communicated with the second air duct, one end of the motor away from the mounting shell is relatively located inside the second fairing, and one end of the second fairing away from the motor bracket is provided with a second air outlet.

3. An air pump according to claim 2, characterized in that: The vents are arranged on the second guide shell in a circumferential manner and are relatively located in the middle of the motor.

4. An air pump according to claim 3, characterized in that: The motor bracket also includes a third guide shell, which is arranged below the mounting shell and surrounds the motor. The second air duct is left between the third guide shell and the second guide shell. The end of the third guide shell away from the mounting shell is relatively located in the center of the motor.

5. An air pump according to claim 2, characterized in that: The radial cross-section of the second fairing gradually decreases following the airflow direction of the second air duct, so that the airflow reaching the second air duct flows toward the end of the motor away from the mounting shell and gathers toward the second air outlet.

6. An air pump according to claim 5, characterized in that: The radial cross-section of the first fairing also gradually decreases along the flow direction of the airflow in the first air duct, so that the airflow passing through the first air duct gathers toward the first air outlet; The second fairing is always located inside the first fairing, the second air outlet is relatively located inside the first fairing, and the second air outlet is coaxially arranged with the first air outlet.

7. An air pump according to claim 1, characterized in that: A first mounting block is disposed around the first air guide shell and the second air guide shell. The first mounting block is along the air flow direction of the first air duct, and the ventilation holes are disposed between adjacent first mounting blocks.

8. An air pump according to claim 4, characterized in that: A second mounting block is disposed around the second flow guide shell and the third flow guide shell, a portion of the second mounting block extends out of the second flow guide shell, and the second fairing is fixed to the second flow guide shell through the second mounting block.

9. An air pump according to claim 2, characterized in that: It also includes an air inlet shell, which is connected to the top of the first guide shell and is relatively located above the fan blades. The air inlet shell is also provided with an air inlet, and the air inlet is coaxially arranged with the first guide shell.

10. An air pump according to claim 9, characterized in that: It also includes an outer shell, the motor bracket is arranged in the outer shell, and the outer shell is provided with a first opening and a second opening, the first opening is communicated with the air inlet of the air inlet shell, and the second opening is communicated with the first air outlet of the first fairing; A battery and a main board are also arranged in the shell, and the battery is electrically connected to the motor and the main board.

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