CN-121993379-A - New energy vehicle-mounted oil-water-cooling piston type air compressor

CN121993379ACN 121993379 ACN121993379 ACN 121993379ACN-121993379-A

Abstract

The invention provides a new energy vehicle-mounted oil-water-cooling piston type air compressor, which belongs to the technical field of air compressors and comprises a crankcase, a driving box, a crankshaft assembly and a compression cylinder assembly, wherein the bottom of the crankcase is connected with an oil pan to form a crankshaft cavity, a breathing cavity is formed in the top of the crankcase and is communicated with the crankshaft cavity through a breathing hole, a water passing hole is formed in the wall of the crankcase, a first water cooling channel is formed in the wall of the driving box, one end of the crankshaft assembly penetrates into the crankcase, the other end of the crankshaft assembly penetrates into the driving box and is connected with a power rotor, the compression cylinder assembly is arranged in the crankcase and is in transmission connection with the crankshaft assembly, a second water cooling channel is arranged in the compression cylinder assembly and is communicated with the first water cooling channel through the water passing hole, and an oil filtering assembly is arranged at a cavity opening of the breathing cavity and is connected with an air inlet end of the compression cylinder assembly. The novel energy vehicle-mounted oil-water-cooled piston type air compressor provided by the invention can meet the requirements of lubrication, cooling and exhaust oil content and improve the compactness of the whole machine.

Inventors

CHEN WENJIN
YANG WEIQIANG
XU JINGAI
ZHANG BOYANG
SUN BINGTAO

Assignees

耐力股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260410

Claims (10)

1. The utility model provides a on-vehicle oily water-cooling piston air compressor machine that has of new forms of energy which characterized in that includes: the bottom of the crankcase is detachably connected with a downward concave oil pan to form a closed crank cavity, a breathing cavity is formed at the top of the crankcase, the breathing cavity is communicated with the top of the crank cavity through a breathing hole, and a water passing hole is formed in the wall of the crankcase; the driving box is in butt joint with one end of the crankcase, and a first water cooling channel is arranged in the wall of the driving box; One end of the crankshaft assembly penetrates into the crankcase and is in running fit with the crankcase, and the other end of the crankshaft assembly penetrates into the driving box and is fixedly connected with the power rotor in the driving box; The compression cylinder assembly is arranged on the crankcase and is in transmission connection with the crankshaft assembly, a second water cooling channel is arranged in the compression cylinder assembly, and the second water cooling channel is communicated with the first water cooling channel through the water passing hole; And the oil filtering component is arranged at the cavity opening of the breathing cavity and is connected with the air inlet end of the compression cylinder assembly.
2. The new energy vehicle-mounted oil-water-cooled piston air compressor of claim 1, wherein an oil collision cavity is formed in a wall of the crankcase, the oil collision cavity is located below the side of the breathing cavity, the breathing hole comprises a first pore canal and a second pore canal, the first pore canal extends downwards from the bottom of the breathing cavity to the wall of the oil collision cavity, and the second pore canal extends downwards from the bottom of the oil collision cavity to the top of the crankshaft cavity.
3. The new energy vehicle-mounted oil-water cooled piston air compressor of claim 1, wherein the breathing cavity is provided with an arc groove cavity bottom, the arc groove cavity bottom gradually decreases from one end to the other end, and the breathing hole is positioned at the lower end of the arc groove cavity bottom.
4. The new energy vehicle-mounted oil-water-cooled piston air compressor of claim 1, wherein an oil baffle is arranged in the breathing cavity, the oil baffle shields the breathing hole at intervals and divides the breathing cavity into a first cavity and a second cavity, and a breathing gap communicated with the first cavity and the second cavity is formed between the oil baffle and the cavity wall of the breathing cavity.
5. The new energy vehicle-mounted oil-water cooled piston air compressor of claim 1, wherein the compression cylinder assembly comprises a primary compression cylinder group and a secondary compression cylinder group, wherein the primary compression cylinder group and the secondary compression cylinder group are distributed at the top of the crankcase in an included angle, the breathing cavity and the oil filtering component are positioned between the primary compression cylinder group and the secondary compression cylinder group, and the oil filtering component is connected with the air inlet end of the primary compression cylinder group.
6. The new energy vehicle-mounted oil-water-cooled piston air compressor of claim 5, wherein the primary compression cylinder group is provided with a cylinder wall water hole and a primary cylinder cover water-cooled cavity, the secondary compression cylinder group is provided with a cylinder periphery water jacket and a secondary cylinder cover water-cooled cavity, one end of the cylinder wall water hole is communicated with the water hole, the other end of the cylinder wall water hole is communicated with the primary cylinder cover water-cooled cavity, the primary cylinder cover water-cooled cavity is communicated with the secondary cylinder cover water-cooled cavity through an external air cooling pipe, the secondary cylinder cover water-cooled cavity is communicated with the cylinder Zhou Shuitao, a water return port communicated with the cylinder Zhou Shuitao is arranged on the cylinder periphery of the secondary compression cylinder group, one end of the first water cooling channel is communicated with the water hole, and the other end of the first water cooling channel is provided with a water inlet.
7. The novel energy vehicle-mounted oil-water-cooled piston air compressor of claim 1, wherein the crankcase and the driving box are connected through a double-sided flange, the driving box is opened towards one end of the crankcase and is provided with a first concave spigot, the crankcase is opened towards one end of the driving box and is provided with a second concave spigot, one side of the double-sided flange is provided with a first convex spigot which is in sealing engagement with the first concave spigot, and the other side of the double-sided flange is provided with a second convex spigot which is in sealing engagement with the second concave spigot; the center of the double-sided flange is provided with a shaft hole in running fit with the crankshaft assembly, the coaxiality of the shaft hole, the first convex spigot and the second convex spigot is in a design tolerance range, and the side area of the shaft hole of the double-sided flange is provided with a perforation communicated with the first water cooling channel and the water passing hole.
8. The new energy vehicle-mounted oil-water-cooled piston air compressor of claim 7, wherein one end of the crankcase far away from the double-sided flange is open and is in sealing connection with a first end cover based on a third concave spigot, wherein coaxiality of the third concave spigot and the first concave spigot is within a design tolerance range, a shaft seat is arranged in the center of the first end cover, a third convex spigot which is in sealing engagement with the third concave spigot is formed on the periphery of the shaft seat, and coaxiality of the third convex spigot and the shaft seat is within the design tolerance range; The driving box is far away from one end of the double-sided flange, is opened and is detachably connected with a second end cover, one end of the crankshaft assembly is in running fit with the shaft seat, the other end of the crankshaft assembly penetrates through the shaft hole and is provided with a cone connecting section, the center of the power rotor is provided with a cone hole, the bottom of the cone hole is penetrated with a fastener, the cone connecting section penetrates into the cone hole and is provided with a tensioning gap with the bottom of the cone hole, and the fastener is connected with one end of the cone connecting section penetrating into the cone hole.
9. The novel energy vehicle-mounted oil-water cooled piston type air compressor of claim 1, wherein the crankshaft assembly comprises an integrally formed crankshaft body and crankshaft connecting rods with split structures, the crankshaft body and two end cavity walls of the crankshaft cavity form rotary fit, the crankshaft connecting rods comprise connecting rod bodies and buckling seats, one ends of the connecting rod bodies are rotatably connected with pistons of the compression cylinder assembly, connecting seats are arranged at the other ends of the connecting rod bodies, the connecting seats are connected with the buckling seats in a buckling mode to form round holes in rotary fit with the crankshaft body, and oil poking rods extending downwards are arranged on the buckling seats.
10. The new energy vehicle-mounted oil-water-cooled piston air compressor of any one of claims 1-9, wherein a plurality of ribs are distributed on the inner wall of the crankcase at intervals, the ribs extend from bottom to top, and a plurality of grooves which are sunken towards the inside of the crank cavity are distributed on the peripheral wall of the oil pan at intervals.

Description

New energy vehicle-mounted oil-water-cooling piston type air compressor Technical Field The invention belongs to the technical field of air compressors, and particularly relates to a new energy vehicle-mounted oil-water-cooled piston type air compressor. Background The piston type air compressor is a high-pressure air generating device commonly used on new energy commercial vehicles, and can be divided into an oil engine and an oil-free engine according to a lubricating mode. The oil piston type air compressor can lubricate the inner walls of the crankshaft, the connecting rod and the cylinder barrel by utilizing lubricating oil in the crankcase, and meanwhile, the lubricating oil also has a cooling effect. Based on the cooling effect of lubricating oil, the oil-bearing piston type air compressor generally adopts an air cooling heat dissipation mode, and is characterized in that air flow blown to a crankcase by a fan is utilized to promote heat dissipation of the wall of the crankcase, so that lubricating oil is maintained at a relatively low temperature to cool moving parts in a crank cavity. However, the requirements of the new energy commercial vehicle on space layout and light weight are increasing at present. When the oil piston type air compressor adopts the traditional air cooling scheme, the cooling fan needs to be axially arranged, and meanwhile, the air guide cover is also arranged on the periphery of the crankcase, so that the length and the width of the whole air compressor are not dominant. If the body size of the compression crankcase meets the market requirement on the whole engine size, the internal space of the crankcase is insufficient, the lubricating oil amount is reduced, the lubricating oil level is increased, and a series of negative problems such as increased internal pressure fluctuation of the crankcase, poor lubricating effect, increased exhaust oil content and the like are caused. In view of the above facts, there is a need to develop new cooling schemes and complete machine structures for oil piston air compressors, so that the cooling schemes and complete machine structures can meet the market size requirements of the complete machine while avoiding the negative problems. Disclosure of Invention The embodiment of the invention provides a new energy vehicle-mounted oil-water-cooled piston type air compressor, which aims to improve the compactness of the whole structure on the basis of meeting the requirements of lubrication, cooling and exhaust oil content of the piston type air compressor. In order to achieve the purpose, the invention adopts the technical scheme that the novel energy vehicle-mounted oil-water-cooling piston type air compressor comprises: The bottom of the crankcase is detachably connected with the oil pan which is sunken downwards to form a closed crank cavity, a breathing cavity is formed at the top of the crankcase, the breathing cavity is communicated with the top of the crank cavity through a breathing hole, and a water passing hole is formed in the wall of the crankcase; the driving box is butted with one end of the crank case, and a first water cooling channel is arranged in the wall of the driving box; One end of the crankshaft assembly penetrates into the crankcase and is in running fit with the crankcase, and the other end of the crankshaft assembly penetrates into the driving box and is fixedly connected with the power rotor in the driving box; The compression cylinder assembly is arranged in the crankcase and is in transmission connection with the crankshaft assembly, a second water cooling channel is arranged in the compression cylinder assembly, and the second water cooling channel is communicated with the first water cooling channel through a water passing hole; The oil filtering assembly is arranged at the cavity opening of the breathing cavity and is connected with the air inlet end of the compression cylinder assembly. In one possible implementation, an oil collision cavity is formed in the wall of the crankcase, the oil collision cavity is located below the side of the breathing cavity, the breathing hole comprises a first pore canal and a second pore canal, the first pore canal extends downwards from the bottom of the breathing cavity to the wall of the oil collision cavity, and the second pore canal extends downwards from the bottom of the oil collision cavity to the top of the crankshaft cavity. In some embodiments, the breathing cavity has an arcuate slot cavity floor that gradually decreases from one end to the other, and the breathing orifice is located at a lower end of the arcuate slot cavity floor. The breathing cavity is internally provided with an oil baffle plate, the oil baffle plate shields the breathing hole at intervals and divides the breathing cavity into a first cavity and a second cavity, and a breathing gap for communicating the first cavity and the second cavity is formed between the oil baffle plate and the cavity wall