An electric air pump

Abstract

The application relates to an electric air pump, which comprises an outer shell, an air compressor core, a core cover and a circuit assembly. The air compressor core is arranged in the outer shell, the core cover covers the air compressor core, and the core cover and the outer shell form a closed air cooling channel. The outer shell is provided with an air inlet at a position corresponding to an air inlet end of the air compressor core and is provided with a gas outlet at a position corresponding to an air outlet end of the air compressor core. The circuit assembly is arranged in the outer shell and is located outside the air cooling channel. The application forms a closed air cooling channel through the outer shell and the core cover, and then forms an air cooling airflow from the air inlet to the gas outlet when the air compressor core works, so that the high-temperature airflow generated by the core working is directionally discharged outside the shell, the overall temperature in the shell is effectively reduced, and the influence of the heat generated by the core working on other components is reduced.

Description

Technical Field

[0001] This application relates to the technical field of air pumps, and more specifically to an electric air pump. Background Technology

[0002] Electric air pumps, such as vehicle-mounted electric air pumps, use a DC motor to drive a gear and linkage mechanism, causing the piston of the air compressor cylinder to reciprocate linearly, compressing air to form high-pressure gas. During this operation, considerable heat is generated, especially when the cylinder is under high pressure, as the friction between the rubber parts of the piston rod and the cylinder wall generates significant heat. If this heat from the motor and the frictional heat from the structural components remains inside the device, it can negatively impact the internal circuitry and shorten the lifespan of the components. Utility Model Content

[0003] To address the problems existing in the prior art, this application aims to provide an electric air pump. This application utilizes a closed air-cooling channel formed by the outer casing and the compressor cover. This allows for the generation of a cooling airflow during compressor operation, directing the high-temperature airflow generated by the compressor out of the casing, effectively reducing the overall temperature inside the casing and minimizing the impact of heat generated by the compressor on other components.

[0004] The electric air pump described in this application includes a housing, an air compressor core, a core cover, and a circuit assembly. The air compressor core is disposed within the housing, and the core cover covers the air compressor core, forming a closed air-cooling channel with the housing. The housing has an air inlet at a position corresponding to the air inlet end of the air compressor core, and a gas outlet at a position corresponding to the air outlet end of the air compressor core. The circuit assembly is disposed within the housing and located outside the air-cooling channel.

[0005] Preferably, the outer shell includes a shell assembly, an end cap, a first side cap, and a second side cap. The shell assembly includes a first shell and a second shell that are interlocked. The end cap is disposed at one end of the shell assembly and connected to the first shell and the second shell. The first side cap and the second side cap are respectively located on both sides of the shell assembly.

[0006] Preferably, the air-cooling channel is L-shaped, the air inlet is located on one side of the housing assembly, and the gas outlet is located on the end cap.

[0007] Preferably, the air inlet includes multiple rows of air inlets, which are arranged along the width direction of the housing assembly. The air inlets in the same row are arranged at equal intervals along the length direction of the housing assembly, and a partition is provided between two adjacent rows of air inlets.

[0008] Preferably, a plurality of first heat dissipation holes are formed on the back of the housing near the gas outlet.

[0009] Preferably, the housing has a plurality of second heat dissipation holes formed on the outside of the gas outlet, the plurality of second heat dissipation holes being circumferentially distributed on the outside of the gas outlet, and the second heat dissipation holes being elongated holes.

[0010] Preferably, a mounting position adapted to the air compressor core is formed between the second housing and the core cover, the air compressor core is disposed at the mounting position, and the circuit assembly is disposed on the side of the core cover away from the air compressor core.

[0011] Preferably, the electric air pump further includes an energy storage power supply electrically connected to the air compressor core and the circuit assembly. The energy storage power supply is located at one end of the housing away from the air compressor core. The energy storage power supply is detachably connected to the housing, and the housing has a replacement port at a position corresponding to the energy storage power supply. A tail cover is provided at the replacement port.

[0012] Preferably, the electric air pump further includes a start-up power output interface electrically connected to the air compressor core and the circuit assembly, and the start-up power output interface is disposed on one side of the housing.

[0013] Preferably, the power supply output interface is provided with an interface flip cover.

[0014] The electric air pump described in this application has the advantage that it forms a closed air-cooling channel by setting up an outer shell and a core cover. The air compressor core is set in the air-cooling channel, and the outer shell has an air inlet and a gas outlet. When the air compressor core is working, the airflow flows in from the air inlet, carries away the heat generated by the core after passing through the core, forming a high-temperature airflow, and then is discharged directionally from the gas outlet. This can effectively reduce the overall temperature inside the outer shell when the core is working, and the high-temperature airflow is isolated in the air-cooling channel, which effectively reduces the impact of the high-temperature airflow on other components inside the outer shell, which is beneficial to improving the reliability and durability of the electric air pump. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an electric air pump as described in Example 1;

[0016] Figure 2 yes Figure 1 Exploded view;

[0017] Figure 3 yes Figure 1 An enlarged view of position A in the middle;

[0018] Figure 4 yes Figure 1An enlarged view of position B in the middle;

[0019] Figure 5 This is a schematic diagram of the internal structure of an electric air pump as described in Example 1;

[0020] Figure 6 This is a schematic diagram of the structure of an electric air pump as described in Example 2;

[0021] Figure 7 This is one of the structural schematic diagrams of an electric air pump described in Embodiment 3 (with a hidden interface flip cover);

[0022] Figure 8 This is the second schematic diagram of the structure of an electric air pump described in Example 3.

[0023] Explanation of reference numerals in the attached drawings: 1-outer shell, 1a-air inlet, 1a1-air inlet hole, 1a2-partition, 1b-gas outlet, 1c1-first heat dissipation hole, 1c2-second heat dissipation hole, 11-first housing, 12-second housing, 13-end cover, 14-first side cover, 15-second side cover, 16-tail cover, 17-starting power output interface, 18-interface flip cover, 2-air compressor core, 3-core cover, 4-circuit assembly, 5-energy storage power supply. Detailed Implementation

[0024] like Figures 1-5 As shown, the electric air pump described in this application includes a housing 1, an air compressor core 2, a core cover 3, and a circuit assembly 4. The air compressor core 2 is specifically an air compressor core, disposed within the housing 1. The core cover 3 is located at the air compressor core 2 and, together with the housing 1, forms a closed air-cooling channel. The housing 1 has an air inlet 1a at a position corresponding to the air inlet end of the air compressor core 2, which communicates with the outside for air intake. The housing 1 also has a gas outlet 1b at a position corresponding to the air outlet end of the air compressor core 2, which communicates with the outside for the discharge of high-temperature airflow. The circuit assembly 4 is disposed within the housing 1 and outside the air-cooling channel. For example, the circuit assembly 4 is an integrated circuit board commonly used in electric air pumps, electrically connected to the air compressor core 2, for controlling the start and stop of the air compressor core 2. In other optional embodiments, the electric air pump also includes conventional circuit components such as LED indicator lights, a display screen, and a switch button. The LED indicator lights are electrically connected to the circuit board and are disposed on the surface of the housing 1 to indicate the operating status of the electric air pump. The display screen is electrically connected to the circuit board and is disposed on the surface of the housing 1 to display parameter information of the electric air pump. The switch button is disposed on the surface of the housing 1 and electrically connected to the circuit board to control the start and stop of the electric air pump.

[0025] Furthermore, in this embodiment, the outer shell 1 includes a shell assembly, an end cap 13, a first side cap 14, and a second side cap 15. The shell assembly includes a first shell 11 and a second shell 12 that are fastened together by snaps. Both the first shell 11 and the second shell 12 are square shells and are adapted to each other. The first shell 11 and the second shell 12 are fastened together to form an integral square outer shell.

[0026] End cap 13 is disposed at one end of the housing assembly and is connected to the housing assembly by bolts or snaps. The first side cover 14 and the second side cover 15 have a hollow structure in the middle and are respectively disposed on both sides of the housing assembly and are connected to the housing assembly by bolts or snaps.

[0027] Details as follows Figure 5 As shown, Figure 5 The dashed arrow in the middle indicates the airflow direction. The air-cooling channel is L-shaped. The air inlet 1a is located on one side of the housing assembly, and the gas outlet 1b is located on the end cover 13, so that the air inlet direction and the air outlet direction are perpendicular to each other. This can extend the length of the air-cooling channel, improve the cooling effect, and make the structure compact and the overall size of the air pump small.

[0028] When the electric air pump is working, the air compressor core 2 operates, drawing in ambient temperature airflow from the air inlet 1a through the fan blade end of the core. The airflow passes through the motor, gear pair, cylinder and other components of the air compressor core 2, carrying away the heat energy generated during the operation of the components. After flowing through the air cooling channel, the airflow is discharged from the gas outlet 1b at the end cover 13, realizing the directional flow of high temperature airflow and reducing the impact of high temperature airflow on other components inside the housing.

[0029] Please refer to the detailed information. Figure 3 The air inlet 1a includes multiple rows of air inlet holes 1a1, each of which is a circular hole. The multiple rows of air inlet holes 1a1 are arranged along the width direction of the housing assembly, while the air inlet holes 1a1 in the same row are arranged at equal intervals along the length direction of the housing assembly. This matrix arrangement of the multiple air inlet holes 1a1 ensures uniform airflow and prevents large foreign objects from entering the housing. A partition 1a2 is provided between adjacent rows of air inlet holes 1a1. The partition 1a2 is elongated and extends along the length direction of the housing assembly. The partition 1a2 separates adjacent rows of air inlet holes 1a1, preventing airflow interference between different rows of air inlet holes 1a1.

[0030] Please see Figure 1 On the back of the outer casing 1, near the gas outlet 1b, there are several first heat dissipation holes 1c1. The first heat dissipation holes 1c1 are located near the gas outlet 1b and are used to dissipate the heat of the high-temperature gas flowing in the air-cooling channel.

[0031] Please refer to the detailed information. Figure 4The outer casing 1 has a plurality of second heat dissipation holes 1c2 formed on the outside of the gas outlet 1b. The plurality of second heat dissipation holes 1c2 are circumferentially distributed on the outside of the gas outlet 1b. The second heat dissipation holes 1c2 are elongated holes. The second heat dissipation holes 1c2 cooperate with the aforementioned first heat dissipation holes 1c1 to form a heat dissipation structure, which can further enhance the heat dissipation effect on the high-temperature gas in the air-cooling channel.

[0032] Furthermore, in this embodiment, a mounting position adapted to the air compressor core 2 is formed between the second housing 12 and the core cover 3. The air compressor core 2 is located at the mounting position, and the circuit assembly 4 is located on the side of the core cover 3 away from the air compressor core 2. That is, the air compressor core 2, the core cover 3 and the circuit assembly 4 are stacked in an up-and-down manner, which has the advantages of compact structure and easy assembly.

[0033] Regarding the power supply configuration, the electric air pump has at least the following three implementation methods:

[0034] Example 1

[0035] like Figure 5 As shown, this electric air pump does not have an internal power supply; it uses its own power cord to connect to the car's cigarette lighter socket for power.

[0036] Example 2

[0037] like Figure 6 As shown, the electric air pump also includes an energy storage power supply 5 electrically connected to the air compressor core 2 and the circuit assembly 4. The energy storage power supply 5 is specifically a lithium battery. The energy storage power supply 5 is located at the lower end of the outer casing 1, away from the air compressor core 2, so that the weight of the air pump is balanced at both ends, making it easy to place stably.

[0038] The energy storage power supply 5 is detachably connected to the outer casing 1, for example, by clipping the energy storage power supply 5 into a battery slot. The outer casing 1 has a replacement port corresponding to the energy storage power supply 5, which communicates with the battery slot, facilitating the insertion and removal of the battery for replacement. A tail cap 16 is provided at the replacement port to close it.

[0039] This embodiment features an electric air pump equipped with an energy storage power supply 5, which can operate without an external power source, thus expanding the scope of application of the air pump and eliminating its limitation to vehicle-mounted usage scenarios.

[0040] Example 3

[0041] like Figure 7 , Figure 8As shown, the electric air pump also includes a start-up power output interface 17 that is electrically connected to the air compressor core 2 and the circuit assembly 4. The start-up power output interface 17 is located on one side of the housing 1. The start-up power output interface 17 can be used to connect to an external power source when the energy storage power source 5 is depleted, thus meeting the emergency use requirements.

[0042] Furthermore, an interface cover 18 is provided at the power output interface 17. The interface cover 18 is a hinged, flip-up cover structure, which facilitates the sealing of the power output interface 17.

[0043] The three implementation methods described above can be selected and configured according to actual needs.

[0044] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application.

[0045] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this application.

Claims

1. An electric air pump, characterized in that, The device includes an outer casing, an air compressor core, a core cover, and a circuit assembly. The air compressor core is housed within the outer casing, and the core cover covers the air compressor core, forming a closed air-cooling channel with the outer casing. The outer casing has an air inlet at a position corresponding to the air inlet end of the air compressor core and an air outlet at a position corresponding to the air outlet end of the air compressor core. The circuit assembly is housed within the outer casing and located outside the air-cooling channel.

2. The electric air pump according to claim 1, characterized in that, The outer casing includes a casing assembly, an end cap, a first side cap, and a second side cap. The casing assembly includes a first casing and a second casing that are interlocked. The end cap is disposed at one end of the casing assembly and is connected to the first casing and the second casing. The first side cap and the second side cap are respectively located on both sides of the casing assembly.

3. The electric air pump according to claim 2, characterized in that, The air-cooling channel is L-shaped, the air inlet is located on one side of the housing assembly, and the gas outlet is located on the end cover.

4. The electric air pump according to claim 3, characterized in that, The air inlet includes multiple rows of air inlets, which are arranged along the width of the housing assembly. The air inlets in the same row are arranged at equal intervals along the length of the housing assembly, and a partition is provided between two adjacent rows of air inlets.

5. The electric air pump according to claim 2, characterized in that, The back of the outer casing has several first heat dissipation holes formed near the gas outlet.

6. The electric air pump according to claim 5, characterized in that, The outer casing has a plurality of second heat dissipation holes formed on the outside of the gas outlet. The plurality of second heat dissipation holes are circumferentially distributed on the outside of the gas outlet, and the second heat dissipation holes are elongated holes.

7. The electric air pump according to claim 2, characterized in that, A mounting position adapted to the air compressor core is formed between the second housing and the core cover. The air compressor core is disposed at the mounting position, and the circuit assembly is disposed on the side of the core cover away from the air compressor core.

8. The electric air pump according to claim 1, characterized in that, It also includes an energy storage power supply electrically connected to the air compressor core and the circuit assembly. The energy storage power supply is located at one end of the housing away from the air compressor core. The energy storage power supply is detachably connected to the housing. The housing has a replacement port at a position corresponding to the energy storage power supply. A tail cap is provided at the replacement port.

9. The electric air pump according to claim 8, characterized in that, It also includes a start-up power output interface electrically connected to the air compressor core and the circuit assembly, the start-up power output interface being disposed on one side of the housing.

10. The electric air pump according to claim 9, characterized in that, The power supply output interface is equipped with an interface flip cover.

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