Air compressor structure with backward filtration of intake air

Abstract

A kind of air compressor structure of backward filtering intake, including an air compressor: air compressor includes at least one drive motor, and is combined with a closure cover after drive motor, air compressor is set to the air inlet of the closure cover, again by air inlet is connected with a filter assembly, so that filter assembly is connected to the external backward position of the drive motor of air compressor;With this, when air compressor starts, external air first enters drive motor by filter assembly, dust, sand and moisture in air are filtered by external filter assembly in air, dust, sand and moisture in air can effectively prevent entering air compressor inside (such as drive motor and cylinder body inside), cause drive motor, cylinder body damage and corrosion, reach effectively improve the service life of air compressor, and can make the air compressor be applicable to various harsh environments.

Description

Technical Field

[0001] This utility model relates to a rear-filtered air intake air compressor structure, and more particularly to an air compressor structure in which a filter assembly is connected rearward to the drive motor of the air compressor to prevent dust, gravel and water vapor in the air from entering the air compressor and causing damage and corrosion to the drive motor and cylinder, thereby effectively extending the service life of the air compressor and making it suitable for various harsh environments. Background Technology

[0002] Currently, air compressors or inflators are mainly used in pneumatic tools, vehicle tires, and various inflatable devices as a source of air for inflation. Therefore, in the DIY field, air compressors or inflators not only serve as essential tools in workplaces and home repairs, but are also indispensable equipment for emergency tire inflation.

[0003] The main working principle of an air compressor or inflator is that the internal electric motor directly drives the crankshaft, causing the crankshaft to rotate. This, in turn, drives the connecting rod to make the piston reciprocate up and down, causing changes in the cylinder volume. This compresses and exhausts pressurized gas. Therefore, during the entire intake, compression, and exhaust stroke, due to the changes in cylinder volume, the compressed air passes through a one-way valve mechanism (check valve) and is output through a hose via an air nozzle, thus inflating an object.

[0004] However, existing medium or small air compressors or inflators (such as vehicle-mounted emergency backup inflators, portable inflators, or benchtop inflators) do not have filtration devices to filter dust, grit, and moisture. Furthermore, the air intake of these existing medium and small air compressors or inflators is achieved through the gaps around the electric motor (drive motor) or through an open space reserved in the lower part of the cylinder block (i.e., the crankshaft rotation position). Therefore, when the environment contains dust, grit, etc., once these particles enter the air compressor or inflator, they will inevitably damage the electric motor (drive motor) and cause wear between the piston and cylinder wall, severely affecting its inflation efficiency. In addition, if moisture from a high-humidity environment enters the air compressor or inflator, it will inevitably cause corrosion of the electric motor (drive motor) and the piston and cylinder, further severely affecting the inflation efficiency and service life of the air compressor or inflator.

[0005] Therefore, the main problem this invention aims to solve is how to provide an air compressor or inflator that can filter dust, gravel, and moisture from the outside air to improve the overall inflation efficiency and service life of the air compressor or inflator. Utility Model Content

[0006] The main objective of this utility model is to provide a rear-filtered air compressor structure, comprising: an air compressor having at least one air inlet and at least one air outlet, the air compressor including at least one drive motor, the drive motor being rearwardly connected to a sealing cover, the air inlet being disposed on the sealing cover and communicating with the interior of the drive motor, the air inlet being communicatingly connected to a filter assembly, the filter assembly being relatively connected to the rearward end of the drive motor of the air compressor; when the air compressor is started, external air enters the drive motor through the filter assembly, and then the compressed air is discharged through the air outlet by the cylinder body to perform inflation operation.

[0007] Furthermore, the filter assembly includes a housing, a filter material, and a top cover. The housing has a filter space inside for housing the filter material. The housing has multiple air inlets and at least one exhaust port around the filter material. The top cover is attached to the top of the housing to seal the filter space. The housing also has a protruding connecting portion at the exhaust port, which is connected to the air inlet of the air compressor, so that the air inlet of the air compressor is connected to the filter assembly.

[0008] Furthermore, the air compressor is provided with at least one fan outside the drive motor for blowing external cold air toward the air compressor.

[0009] The beneficial effects of this utility model are:

[0010] The main technical feature of this utility model is that a filter assembly is connected to the bottom (rearward) end of the drive motor of the air compressor. This external filter assembly filters dust, grit, and water vapor in the air, effectively preventing dust, grit, and water vapor from entering the air compressor and causing damage and corrosion to the drive motor and cylinder. This effectively extends the service life of the air compressor and makes the air compressor or inflator widely applicable to various environments (e.g., suitable for use on beaches, seasides, or dusty environments). Attached Figure Description

[0011] Figure 1 : A perspective view of an embodiment of the rear-filtered air intake air compressor structure of this utility model;

[0012] Figure 2 Partial exploded view of an embodiment of the rear-filtered air intake air compressor structure of this utility model;

[0013] Figure 3 : A schematic diagram of the air flow direction of an embodiment of the rear-filtered air intake air compressor structure of this utility model.

[0014] Explanation of reference numerals in the attached figures:

[0015] 1. Air compressor

[0016] 11. Air Inlet

[0017] 12. Air vent

[0018] 13. Drive motor

[0019] 131. Sealing cap

[0020] 2. Filter assembly

[0021] 21. Shell

[0022] 210. Filter space

[0023] 211. Air Inlet

[0024] 212. Exhaust port

[0025] 213. Joint

[0026] 22. Filter media

[0027] 23. Top cover

[0028] 4. Fan. Detailed Implementation

[0029] To facilitate a quick and easy understanding of the other features, advantages, and effects of this utility model, the features and advantages of this utility model will now be described in detail with reference to the accompanying drawings. The following embodiments further illustrate the viewpoints of this utility model, but are not intended to limit the scope of this utility model in any way.

[0030] Please refer to the following: Figures 1 to 3 As shown, this utility model discloses a rear-filtered air compressor structure, including an air compressor 1, which can be a medium or small air compressor (such as a portable vehicle air compressor, a small household air compressor, or a small benchtop air compressor).

[0031] The air compressor 1 is provided with at least one air inlet 11 and at least one air outlet 12. The air compressor 1 includes a drive motor 13, a gear set, and at least one or more cylinders (including connecting rods and pistons). However, the combination of the drive motor 13 of the air compressor 1 with the gear set, cylinder, connecting rod and piston is not a technical feature of this utility model, and will not be described in detail here.

[0032] Each drive motor 13 of the air compressor 1 is rearwardly connected to a sealed cover 131, and an air inlet 11 is disposed opposite to the sealed cover 131 so that the air inlet 11 communicates with the interior of the drive motor 13. A filter assembly 2 is directly connected to the air inlet 11 of the air compressor 1, and the filter assembly 2 is directly connected to a rearward position outside the drive motor 13 of the air compressor 1. The air outlet 12 of the air compressor 1 can be located at the top of the cylinder. Figure 1 As shown, the air compressor 1 of this utility model is provided with a drive motor 13, and the air compressor 1 of this utility model includes an air inlet 11.

[0033] The filter assembly 2 includes a housing 21, a filter material 22, and a top cover 23. The housing 21 has an internal filter space 210 for housing the filter material 22. The housing 21 has multiple air inlets 211 and at least one exhaust outlet 212 with narrow slits around its periphery relative to the filter material 22. The top cover 23 is attached to the top of the housing 21 to seal the filter space 210. A connecting portion 213 extends from the exhaust outlet 212 of the housing 21 and connects to the air inlet 11 of the air compressor 1, thus enabling communication between the air inlet 11 of the air compressor 1 and the filter assembly 2.

[0034] The air compressor 1 may be further provided with at least one fan 4 outside the drive motor 13, which is used to blow external cold air onto the air compressor 1 to cool the air compressor 1.

[0035] like Figures 1 to 3 As shown, when the air compressor 1 starts, external air is forcibly drawn in through the air inlet 211 of the filter assembly 2, which has a forced air intake function. That is, external air enters through the air inlet 211 of the filter assembly 2, is filtered by the filter material 22, and then flows from the exhaust port 212 of the filter assembly 2 to the joint 213, the air inlet 11, and then into the drive motor 13 of the air compressor 1. The compressed air is then output from the air outlet 12 by the cylinder body. In this way, the filter assembly 2 filters dust, gravel, and water vapor in the air to prevent dust, gravel, and water vapor in the air from entering the drive motor 13 and the cylinder body of the air compressor 1, causing wear, damage, and corrosion of the drive motor 13 and the cylinder body.

[0036] Therefore, the main technical feature of this utility model is that an external filter assembly 2 is connected to the air compressor 1, which can filter dust, gravel and water vapor in the air, so as to effectively prevent dust, gravel and water vapor in the air from entering the air compressor 1 and causing damage and corrosion to the drive motor 13 and cylinder body, thereby effectively improving the service life of the air compressor 1 and making the air compressor 1 widely applicable to various environments (e.g., suitable for use in harsh environments such as beaches, seaside or dusty environments).

Claims

1. An air compressor structure which filters intake air in a backward direction, characterized by, include: An air compressor is provided with at least one air inlet and at least one air outlet. The air compressor includes at least one drive motor. The drive motor is rear-connected to a sealing cover. The air inlet is disposed on the sealing cover and communicates with the interior of the drive motor. A filter assembly is communicated and connected to the air inlet. The filter assembly is connected to the rear end of the drive motor of the air compressor.

2. The air compressor structure with rear-filtered air intake as described in claim 1, characterized in that, The filter assembly includes a housing, a filter material, and a top cover. The housing has a filter space inside for housing the filter material. The housing has multiple air inlets and at least one exhaust port around the filter material. The top cover is attached to the top of the housing to seal the filter space. The housing has a protruding joint at the exhaust port, which is connected to the air inlet of the air compressor, so that the air inlet of the air compressor is connected to the filter assembly.

3. The air compressor structure with rear-filtered air intake as described in claim 1, characterized in that, The air compressor is also provided with at least one fan outside the drive motor for blowing cold air from outside onto the air compressor.

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