On-vehicle air compressor self-cleaning equipment and its working method

Abstract

The present invention provides an in-vehicle air compressor self-cleaning device and its working method, including a volute casing. A permanent magnet synchronous motor is installed on one side of the volute casing, and an oil-free scroll pump head is installed on the other side. A plate fin radiator is installed on one side of the volute casing. Blow pipes are connected to both sides of the plate fin radiator, and a dust blowing gun interface is connected to one end of the plate fin radiator away from the blow pipes. The present invention can achieve the purpose of self-cleaning of the air compressor without human intervention.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of vehicle-mounted air compressors, and particularly relates to a self-cleaning device for vehicle-mounted air compressors and its working method. Background Art

[0002] Pure electric buses, pure electric heavy trucks, and pure electric logistics vehicles all use pneumatic braking as a braking solution, and an electric air compressor provides a compressed air source for the braking system.

[0003] Vehicle-mounted air compressors all adopt an air-cooled heat dissipation solution. Compared with industrial air compressors, the environmental working conditions of vehicle-mounted compressors are much harsher. For example, the dust on the road is very heavy, and mud splashes onto the compressor body on rainy days. If it is not cleaned and purged in time, it will directly affect the heat dissipation of the air compressor.

[0004] Although the instruction manuals of air compressor manufacturers clearly require vehicle manufacturers and end customers (bus companies) to regularly purge and dust-clean the compressors, due to human factors and the limitations of bus yard conditions (no purge air source can be connected), in fact, very few customers can perform regular maintenance. Therefore, this problem has always been a pain point in the industry, and there is no ideal solution. Summary of the Invention

[0005] The present invention mainly provides a self-cleaning device for vehicle-mounted air compressors and its working method to solve the technical problems raised in the above background art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0007] A self-cleaning device for a vehicle-mounted air compressor, including a volute. A permanent magnet synchronous motor is installed on one side of the volute, and an oil-free scroll pump head is installed on the other side. A plate fin radiator is installed on one side of the volute. A shunt blowing mechanism is provided at the bottom ends of the volute and the oil-free scroll pump head;

[0008] Blowback pipes are connected to both sides of the plate fin radiator, and a dust blowing gun interface is connected to one end of the plate fin radiator away from the blowback pipes;

[0009] The shunt blowing mechanism includes a support frame sleeved outside the bottom ends of the volute and the oil-free scroll pump head, a cold storage air bag arranged inside the support frame, and an air outlet assembly connected to the air outlet end of the cold storage air bag;

[0010] The air outlet assembly includes a first high-pressure air release valve installed on one side surface of the cold storage air bag, a first air delivery pipe connected to the air outlet end of the first high-pressure air release valve, and a one-way valve connected to the end of the first air delivery pipe away from the first high-pressure air release valve. The end of the one-way valve away from the first air delivery pipe is connected to two second air delivery pipes through a three-way pipe, and the second air delivery pipes are connected to the top ends of the adjacent blowback pipes.

[0011] Further, on one side where the two soot blowing pipes are close to each other, a plurality of small holes are successively arranged from top to bottom.

[0012] Further, the support frame includes a bottom plate slidably connected to the lower surface of the cold storage airbag, a surrounding frame installed on the upper surface of the bottom plate, a plurality of through holes provided on the bottom plate, and limiting columns provided inside the through holes, and the limiting columns are installed on the lower surface of the cold storage airbag.

[0013] Further, a semiconductor refrigerator is installed inside the cold storage airbag, and an air inlet pipe is installed on one side of the cold storage airbag.

[0014] Further, a plurality of springs are installed inside the cold storage airbag, and a buffer plate is connected to the inside of the cold storage airbag through the plurality of springs.

[0015] Further, a bellows-type folding airbag is installed on the upper surface of the cold storage airbag, a plurality of second high-pressure air release valves are installed on the lower surface of the bellows-type folding airbag, and one end of the second high-pressure air release valve away from the bellows-type folding airbag extends into the cold storage airbag.

[0016] Further, a lifting plate is installed on the inner wall of the top end of the bellows-type folding airbag, and air pumps are installed at the four corners of the lower surface of the lifting plate.

[0017] Further, a wear-resistant plate is installed on the upper surface of the bellows-type folding airbag.

[0018] According to the above technical solution of the in-vehicle air compressor self-cleaning device, a working method of the in-vehicle air compressor self-cleaning device will also be provided, including the following steps:

[0019] Step 1, the permanent magnet synchronous motor stops working;

[0020] Step 2, open the start valve of the air compressor to lead the air flow in the pipeline of the air compressor to the soot blowing pipe;

[0021] Step 3, clean the plate-fin radiator through the instantaneous release of the air flow inside the soot blowing pipe.

[0022] Further, in the present invention, the following steps are also included: dock with a dust blowing gun through a dust blowing gun interface, and start the permanent magnet synchronous motor to clean the permanent magnet synchronous motor of the air compressor.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The present invention can enable the air compressor to achieve self-cleaning without human intervention, actually achieving regular maintenance and preventing the influence of harsh environmental conditions on the heat dissipation of the air compressor. A quick connector is reserved at the air outlet of the air compressor. The logistics maintenance personnel only need to carry a dust blowing gun with a quick connector, directly dock it with the quick interface of the air compressor before use, and start the air compressor to carry out purging and cleaning work.

[0025] The present invention will be explained and described in detail below in conjunction with the accompanying drawings and specific embodiments. Brief Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the present invention;

[0027] Figure 2 is a top view of the present invention;

[0028] Figure 3 is a side view of the present invention;

[0029] Figure 4 is a schematic structural diagram of the flow-dividing blowing mechanism of the present invention;

[0030] Figure 5 is a top view of the flow-dividing blowing mechanism of the present invention;

[0031] Figure 6 is an exploded view of the flow-dividing blowing mechanism of the present invention;

[0032] Figure 7 is an exploded view of the cold storage airbag of the present invention;

[0033] Figure 8 is an exploded view of the bellows-type folding airbag of the present invention.

[0034] In the figure: 1, permanent magnet synchronous motor; 2, volute; 3, oil-free scroll pump head; 4, dust blowing gun interface; 5, dust blowing pipe; 6, plate-fin radiator; 7, flow-dividing blowing mechanism; 71, support frame; 711, bottom plate; 712, surrounding frame; 713, through hole; 714, limit post; 72, cold storage airbag; 721, semiconductor refrigerator; 722, intake pipe; 723, spring; 724, buffer plate; 73, air outlet assembly; 731, first high-pressure air release valve; 732, first air delivery pipe; 733, one-way valve; 734, second air delivery pipe; 74, bellows-type folding airbag; 741, second high-pressure air release valve; 742, air pump; 743, lifting plate; 744, wear-resistant plate. Detailed Embodiments

[0035] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0036] It should be noted that when an element is referred to as being "fixedly installed on" another element, it can be directly on the other element or there can 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", "left", "right" and similar expressions used herein are only for illustrative purposes.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] For the embodiments, please refer to the attached Figure 1-8 , an on-vehicle air compressor self-cleaning device, including a volute 2, a permanent magnet synchronous motor 1 is installed on one side of the volute 2, and an oil-free scroll pump head 3 is installed on the other side. A plate fin radiator 6 is installed on one side of the volute 2;

[0039] Blowback pipes 5 are connected to both sides of the plate fin radiator 6, and a dust blowing gun interface 4 is connected to one end of the plate fin radiator 6 away from the blowback pipes 5;

[0040] It should be noted that in this embodiment, a plurality of small holes are successively provided from top to bottom on the side where the two blowback pipes 5 are close to each other;

[0041] Furthermore, a centrifugal impeller is installed inside the volute 2, and the centrifugal impeller rotates coaxially with the permanent magnet synchronous motor 1;

[0042] Furthermore, the pipeline of the air compressor is connected to the blowback pipe 5 through a pipeline.

[0043] Please refer to the attached Figure 4 , 6 and 7. The support frame 71 includes a bottom plate 711 that is slidably connected to the lower surface of the cold storage airbag 72, a surrounding frame 712 installed on the upper surface of the bottom plate 711, a plurality of through holes 713 provided on the bottom plate 711, and limit posts 714 provided inside the through holes 713. The limit posts 714 are installed on the lower surface of the cold storage airbag 72;

[0044] A semiconductor refrigerator 721 is installed inside the cold storage airbag 72, and an air inlet pipe 722 is installed on one side of the cold storage airbag 72;

[0045] A plurality of springs 723 are installed inside the cold storage airbag 72, and a buffer plate 724 is connected inside the cold storage airbag 72 through the plurality of springs 723;

[0046] It should be noted that in this embodiment, the bottom plate 711 provides support for the cold storage airbag 72. The bottom plate 711 has through holes 713 thereon for the limiting posts 714 to move, so that the cold storage airbag 72 restricts and guides its own movement through the movement of the limiting posts 714 thereon in the through holes 713;

[0047] Furthermore, the cold storage airbag 72 is refrigerated by the semiconductor refrigerator 721 therein, so that cold air is stored inside the cold storage airbag 72. The cold storage airbag 72 intakes air through the air inlet pipe 722, and the intake end of the air inlet pipe 722 is connected to the exhaust pipe of the air compressor;

[0048] Furthermore, when the volute 2 and the oil-free scroll pump head 3 vibrate during operation and collide with the buffer plate 724, the buffer plate 724 buffers through the expansion and contraction of the spring 723, so that the vibration force is transmitted to the cold storage airbag 72. Before buffering by the cold storage airbag 72, buffering is first performed by the buffer plate 724.

[0049] Please refer specifically to Attachments Figure 4 、 6 and 8. An accordion-folded airbag 74 is installed on the upper surface of the cold storage airbag 72. A plurality of second high-pressure air release valves 741 are installed on the lower surface of the accordion-folded airbag 74, and one end of the second high-pressure air release valve 741 away from the accordion-folded airbag 74 extends into the cold storage airbag 72;

[0050] A lifting plate 743 is installed on the inner wall of the top end of the accordion-folded airbag 74, and air pumps 742 are installed at the four corners of the lower surface of the lifting plate 743;

[0051] A wear-resistant plate 744 is installed on the upper surface of the accordion-folded airbag 74;

[0052] It should be noted that in this embodiment, when the volute 2 and the oil-free scroll pump head 3 collide with the accordion-folded airbag 74, causing the accordion-folded airbag 74 to expand and contract, the gas inside the accordion-folded airbag 74 is compressed, so that the air pressure inside the accordion-folded airbag 74 exceeds the threshold value of the second high-pressure air release valve 741, and the air exceeding the threshold value is discharged into the cold storage airbag 72 through the second high-pressure air release valve 741, thereby increasing the gas inside the cold storage airbag 72;

[0053] Furthermore, when the bellows - type folding airbag 74 expands and contracts, the lifting plate 743 inside it also descends by means of this expansion and contraction, causing the lifting plate 743 to push the air pump 742, enabling the air pump 742 to pump air. Since the air outlet end of the air pump 742 is inside the bellows - type folding airbag 74, air is supplied to the bellows - type folding airbag 74. By arranging a spring outside the air pump 742, the air pump 742 returns to its original working position through the spring.

[0054] Furthermore, the upper surface of the bellows - type folding airbag 74 is provided with a wear - resistant plate 744 to increase wear resistance.

[0055] As Figure 1-8 shown, according to the above - mentioned embodiments, a working method of the in - vehicle air compressor self - cleaning device will also be provided, including the following steps:

[0056] Step 1, the permanent - magnet synchronous motor 1 stops working;

[0057] Step 2, open the start valve of the air compressor so that the air flow in the pipeline of the air compressor is led to the soot - blowing pipe 5;

[0058] Step 3, clean the plate - fin radiator 6 through the instantaneous release of the air flow inside the soot - blowing pipe 5.

[0059] Furthermore, it also includes the following steps: dock with a dust - blowing gun through the dust - blowing gun interface 4, and start the permanent - magnet synchronous motor 1 to clean the permanent - magnet synchronous motor 1 of the air compressor.

[0060] The specific operation mode of the present invention is as follows:

[0061] The permanent - magnet synchronous motor 1 stops working, the start valve of the air compressor is opened so that the air flow in the pipeline of the air compressor is led to the soot - blowing pipe 5, and the plate - fin radiator 6 is cleaned through the instantaneous release of the air flow inside the soot - blowing pipe 5;

[0062] Dock with a dust - blowing gun through the dust - blowing gun interface 4, and start the permanent - magnet synchronous motor 1 to clean the permanent - magnet synchronous motor 1 of the air compressor.

[0063] The above - mentioned description of the present invention with reference to the accompanying drawings is exemplary. Obviously, the specific implementation of the present invention is not limited by the above - mentioned manner. As long as such non - substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. On-vehicle air compressor self-cleaning equipment, including a volute (2), characterized in that , a permanent magnet synchronous motor (1) is installed on one side of the volute (2), and an oil-free scroll pump head (3) is installed on the other side. A plate-fin radiator (6) is installed on one side of the volute (2). A shunt blowing mechanism (7) is provided at the bottom ends of the volute (2) and the oil-free scroll pump head (3); both sides of the plate-fin radiator (6) are connected with dust blowing pipes (5), and a dust blowing gun interface (4) is reserved at the air compressor exhaust port. One end of the plate-fin radiator (6) away from the dust blowing pipe (5) is connected to the dust blowing gun interface (4); the shunt blowing mechanism (7) includes a support frame (71) sleeved outside the bottom ends of the volute (2) and the oil-free scroll pump head (3), a cold storage air bag (72) arranged inside the support frame (71), and an air outlet assembly (73) connected to the air outlet end of the cold storage air bag (72); the air outlet assembly (73) includes a first high-pressure air release valve (731) installed on one side surface of the cold storage air bag (72), a first air delivery pipe (732) connected to the air outlet end of the first high-pressure air release valve (731), and a one-way valve (733) connected to one end of the first air delivery pipe (732) away from the first high-pressure air release valve (731). One end of the one-way valve (733) away from the first air delivery pipe (732) is connected to two second air delivery pipes (734) through a three-way pipe, and the second air delivery pipes (734) are connected to the top ends of the adjacent dust blowing pipes (5); a plurality of small holes are sequentially arranged from top to bottom on one side of the two dust blowing pipes (5) close to each other; the support frame (71) includes a bottom plate (711) slidably connected to the lower surface of the cold storage air bag (72), a surrounding frame (712) installed on the upper surface of the bottom plate (711), a plurality of through holes (713) arranged on the bottom plate (711), and limit columns (714) arranged inside the through holes (713), and the limit columns (714) are installed on the lower surface of the cold storage air bag (72); a semiconductor refrigerator (721) is installed inside the cold storage air bag (72), and an air inlet pipe (722) is installed on one side of the cold storage air bag (72). The air inlet end of the air inlet pipe (722) is connected to the exhaust pipe of the air compressor; a plurality of springs (723) are installed inside the cold storage air bag (72), and a buffer plate (724) is connected inside the cold storage air bag (72) through the plurality of springs (723).

2. The on-vehicle air compressor self-cleaning equipment according to claim 1, characterized in that an accordion-folded air bag (74) is installed on the upper surface of the cold storage air bag (72), a plurality of second high-pressure air release valves (741) are installed on the lower surface of the accordion-folded air bag (74), and one end of the second high-pressure air release valve (741) away from the accordion-folded air bag (74) extends into the cold storage air bag (72).

3. The on-vehicle air compressor self-cleaning equipment according to claim 2, characterized in that A lifting plate (743) is installed on the inner wall of the top end of the bellows-folded airbag (74), and air pumps (742) are installed at the four top corners of the lower surface of the lifting plate (743).

4. The vehicle-mounted air compressor self-cleaning device according to claim 3, characterized in that a wear-resistant plate (744) is installed on the upper surface of the bellows-folded airbag (74).

5. A working method of the vehicle-mounted air compressor self-cleaning device according to any one of claims 1-4, characterized in that it includes the following steps Step 1, the permanent magnet synchronous motor (1) stops working; Step 2, open the start valve of the air compressor to introduce the air flow in the pipeline of the air compressor to the soot blowing pipe (5); Step 3, clean the plate-fin radiator (6) through the instantaneous release of the air flow inside the soot blowing pipe (5); It further includes the following steps: dock with a dust blowing gun through the dust blowing gun interface (4), and start the permanent magnet synchronous motor (1) to clean the permanent magnet synchronous motor (1) of the air compressor.

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