阅读说明：本技术 一种车用压缩机 (Compressor for vehicle ) 是由 周武彬 周坤 王业荣 马升 于 2020-11-13 设计创作，主要内容包括：本发明公开了一种车用压缩机,包括气缸及与驱动机构连接的传动主轴,气缸内设有相互啮合的第一转子和第二转子；气缸连接有齿轮箱且该气缸与齿轮箱之间形成安装腔；传动主轴的驱动端伸入在安装腔内且该传动主轴通过齿轮组件与第一转子相连接；传动主轴上连接有油泵,油泵包括泵座及泵盖,泵盖连接在泵座上,泵座内设有第一泵齿轮和第二泵齿轮,第一泵齿轮和第二泵齿轮相互啮合,第一泵齿轮与传动主轴连接；油泵通过油路给传动主轴轴承组件、齿轮组件的齿轮、第一转子的排气端的轴承组件及第二转子的排气端的轴承组件进行喷油润滑。该车用压缩机结构简单且紧凑,成本较低,体积较小,占用空间较小且重量较轻。(The invention discloses a vehicle compressor, which comprises a cylinder and a transmission main shaft connected with a driving mechanism, wherein a first rotor and a second rotor which are meshed with each other are arranged in the cylinder; the cylinder is connected with a gear box, and an installation cavity is formed between the cylinder and the gear box; the driving end of the transmission main shaft extends into the mounting cavity and the transmission main shaft is connected with the first rotor through a gear assembly; the transmission main shaft is connected with an oil pump, the oil pump comprises a pump seat and a pump cover, the pump cover is connected to the pump seat, a first pump gear and a second pump gear are arranged in the pump seat, the first pump gear and the second pump gear are meshed with each other, and the first pump gear is connected with the transmission main shaft; the oil pump is used for spraying oil to lubricate the bearing assembly of the transmission main shaft, the gear of the gear assembly, the bearing assembly of the exhaust end of the first rotor and the bearing assembly of the exhaust end of the second rotor through oil paths. The vehicle compressor has the advantages of simple and compact structure, lower cost, smaller volume, smaller occupied space and lighter weight.)

1. A kind of vehicle compressor, including air cylinder and transmission main shaft in connection with drive mechanism, there are first trochanters and second trochanters engaged with each other in the said air cylinder; the method is characterized in that: the cylinder is connected with a gear box, and an installation cavity is formed between the cylinder and the gear box; the driving end of the transmission main shaft extends into the mounting cavity and the transmission main shaft is connected with the first rotor through a gear assembly; the transmission main shaft is connected with an oil pump, the oil pump comprises a pump seat and a pump cover, the pump cover is connected to the pump seat, a first pump gear and a second pump gear are arranged in the pump seat, the first pump gear and the second pump gear are meshed with each other, and the first pump gear is connected with the transmission main shaft; the oil pump is used for spraying oil to lubricate a transmission main shaft bearing assembly, a gear of the gear assembly, a bearing assembly at the exhaust end of the first rotor and a bearing assembly at the exhaust end of the second rotor through oil paths.

2. The vehicular compressor according to claim 1, wherein: the transmission main shaft is arranged between the cylinder and the gear box, and two ends of the transmission main shaft are respectively connected to the cylinder and the gear box through bearings; and the oil pump sprays oil to the bearings at two ends of the transmission main shaft through an oil way for lubrication.

3. The vehicular compressor according to claim 2, wherein: the transmission main shaft is positioned on one side of the cylinder and above the exhaust end of the first rotor and the exhaust end of the second rotor.

4. The vehicular compressor according to claim 2, wherein: the oil pump is arranged on the gear box, and one end of the first pump gear is exposed out of the pump seat and is connected with the end part of the transmission main shaft arranged on the gear box.

5. The vehicular compressor according to claim 4, wherein: the end part of a first pump gear of the oil pump is provided with a driving block, and the driving block is connected to the end part of the transmission main shaft.

6. The vehicular compressor according to claim 5, wherein: the driving block is fixedly connected to the end part of the first pump gear of the oil pump, a groove is formed in the end part of the transmission main shaft, the driving block is matched with the groove, and the transmission main shaft rotates to drive the driving block and the first pump gear of the oil pump to rotate together.

7. The vehicular compressor according to claim 6, wherein: the side wall of the gear box is provided with a mounting groove, the bottom of the mounting groove is provided with a first transmission main shaft bearing, and the end part of the transmission main shaft is arranged in the first transmission main shaft bearing; the oil pump is embedded in the mounting groove, and the tail end of the oil pump is exposed outside the mounting groove.

8. The vehicular compressor according to claim 7, wherein: the pump cover of the oil pump is provided with a limiting step, and the limiting step is limited at the notch of the mounting groove.

9. The vehicular compressor according to claim 7, wherein: the outer side wall of the pump base is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the sealing ring is sealed between the inner side wall of the mounting groove and the outer side wall of the pump base.

10. The vehicular compressor according to claim 1, wherein: the vehicle compressor further comprises an oil tank, the oil tank is connected with the air cylinder, and the oil tank is communicated with the oil way.

11. The vehicular compressor according to claim 2, wherein: the oil tank is connected to the bottom of the cylinder.

12. The vehicular compressor according to claim 10, wherein: the oil pump is characterized in that a first oil inlet oil duct and a second oil inlet oil duct are arranged in the side wall of the mounting cavity, one end of the first oil inlet oil duct is communicated with the oil tank, the other end of the first oil inlet oil duct is communicated with one end of the second oil inlet oil duct, the other end of the second oil inlet oil duct is communicated with the oil duct in the oil pump, and an annular groove is formed in the other end of the second oil inlet oil duct.

13. The vehicular compressor according to claim 1, wherein: one side of the oil pump is provided with an oil inlet channel and an oil inlet, the other side of the oil pump is provided with an oil outlet channel and an oil outlet, the oil outlet channel and the oil outlet are provided with a bearing axial oil injection port, and the oil pump performs oil injection lubrication on the transmission main shaft bearing assembly through the bearing axial oil injection port.

Technical Field

The invention relates to the technical field of compressors, in particular to a vehicle compressor.

Background

With the market demand that oil-free compressors are more and more concerned by the public, the oil-free compressors are also confirmed in the industries of food, medical treatment, textile and the like. The powder conveying compressor needs oil-free environment transportation in order to ensure that transported objects are not polluted by oil. In the screw compressor in the prior art, an external oil pump is required to supply oil to a bearing for lubrication, so that the structure is complex and the cost is high; in addition, the external oil pump makes the whole volume of oil-free compressor great, occupies great area, and weight is heavier moreover.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a vehicle compressor which is simple and compact in structure, low in cost, small in size, small in occupied space and light in weight.

The technical scheme of the invention is that the invention provides a vehicle compressor with the following structure, which comprises a cylinder and a transmission main shaft connected with a driving mechanism, wherein a first rotor and a second rotor which are meshed with each other are arranged in the cylinder; the cylinder is connected with a gear box, and an installation cavity is formed between the cylinder and the gear box; the driving end of the transmission main shaft extends into the mounting cavity and the transmission main shaft is connected with the first rotor through a gear assembly; the transmission main shaft is connected with an oil pump, the oil pump comprises a pump seat and a pump cover, the pump cover is connected to the pump seat, a first pump gear and a second pump gear are arranged in the pump seat, the first pump gear and the second pump gear are meshed with each other, and the first pump gear is connected with the transmission main shaft; the oil pump is used for spraying oil to lubricate a transmission main shaft bearing assembly, a gear of the gear assembly, a bearing assembly at the exhaust end of the first rotor and a bearing assembly at the exhaust end of the second rotor through oil paths.

After adopting the structure, compared with the prior art, the vehicle compressor provided by the invention has the following advantages:

the oil pump of the vehicle compressor is arranged on the transmission main shaft, so that an external oil pump is not needed, and the oil pump is a gear pump, so that the vehicle compressor has the advantages of simple structure, long service life, small volume and light weight. The oil pump driving and connecting modes are simple forming connection, and the assembly is convenient.

As an improvement, the transmission main shaft is arranged between the cylinder and the gear box, and two ends of the transmission main shaft are respectively connected to the cylinder and the gear box through bearings; and the oil pump sprays oil to the bearings at two ends of the transmission main shaft through an oil way for lubrication. After adopting this kind of structure, simple structure, the equipment is convenient.

As an improvement, the transmission main shaft is positioned on one side of the cylinder and above the exhaust end of the first rotor and the exhaust end of the second rotor. After adopting this kind of structure, simple structure and compactness.

As an improvement, the oil pump is arranged on the gear box, and one end of the first pump gear is exposed out of the pump seat and connected with the end part of the transmission main shaft arranged on the gear box. After adopting this kind of structure, simple structure, the equipment is convenient.

As an improvement, a driving block is arranged at the end part of a first pump gear of the oil pump, and the driving block is connected to the end part of the transmission main shaft. After adopting this kind of structure, simple structure, the equipment is convenient.

As an improvement, the driving block is fixedly connected to the end of the first pump gear of the oil pump, a groove is formed in the end of the transmission main shaft, the driving block is matched in the groove, and the transmission main shaft rotates to drive the driving block and the first pump gear of the oil pump to rotate together. After adopting this kind of structure, simple structure, the equipment is convenient.

As an improvement, a mounting groove is arranged on the side wall of the gear box, a first transmission main shaft bearing is arranged at the bottom of the mounting groove, and the end part of the transmission main shaft is arranged in the first transmission main shaft bearing; the oil pump is embedded in the mounting groove, and the tail end of the oil pump is exposed outside the mounting groove. After adopting this kind of structure, the structure is compacter.

As an improvement, a pump cover of the oil pump is provided with a limiting step, and the limiting step is limited at the notch of the mounting groove. After adopting this kind of structure, the oil pump dismouting is more convenient.

As an improvement, the outer side wall of the pump base is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the sealing ring is sealed between the inner side wall of the mounting groove and the outer side wall of the pump base. After adopting this kind of structure, the pump mount with the mounting groove between sealed effect is better.

As an improvement, the vehicle compressor also comprises an oil tank, the oil tank is connected with the cylinder, and the oil tank is communicated with the oil path. After adopting this kind of structure, automobile-used compressor is from taking the oil tank, and the structure is compacter, further reduce cost, reduction volume.

As an improvement, the oil tank is connected to the bottom of the cylinder. After adopting this kind of structure, structural design is more reasonable.

As an improvement, a first oil inlet oil duct and a second oil inlet oil duct are arranged in the side wall of the mounting cavity, one end of the first oil inlet oil duct is communicated with the oil tank, the other end of the first oil inlet oil duct is communicated with one end of the second oil inlet oil duct, the other end of the second oil inlet oil duct is communicated with the oil duct in the oil pump, and an annular groove is formed in the other end of the second oil inlet oil duct. With the structure, lubricating oil can sufficiently enter the oil pump.

As an improvement, one side of the oil pump is provided with an oil inlet channel and an oil inlet, the other side of the oil pump is provided with an oil outlet channel and an oil outlet, the oil outlet channel and the oil outlet are provided with a bearing axial oil nozzle, and the oil pump performs oil injection lubrication on the transmission main shaft bearing assembly through the bearing axial oil nozzle. After adopting this kind of structure, can simplify the oil circuit, reduce the loss, can lubricate more high-efficiently.

Drawings

Fig. 1 is a schematic sectional view of a compressor for a vehicle according to the present invention.

Fig. 2 is a schematic sectional view of another angle of the compressor for a vehicle according to the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 1.

Fig. 4 is a schematic structural view of an oil pump of a compressor for a vehicle according to the present invention.

Fig. 5 is a schematic sectional view illustrating an oil pump of a compressor for a vehicle according to the present invention.

Fig. 6 is an enlarged schematic view of the direction B-B in fig. 4.

Fig. 7 is a sectional view schematically showing the structure of the gear case of the compressor for vehicles according to the present invention.

Fig. 8 is a sectional view schematically illustrating another angle of the gear box of the vehicular compressor according to the present invention.

Fig. 9 is a cross-sectional view schematically illustrating another aspect of the compressor for a vehicle according to the present invention.

Fig. 10 is a cross-sectional view schematically illustrating another aspect of the compressor for a vehicle according to the present invention.

Fig. 11 is a sectional structure view of a cylinder of a compressor for a vehicle according to the present invention.

Fig. 12 is a sectional view schematically illustrating another angle of the cylinder of the compressor for vehicles according to the present invention.

Fig. 13 is a sectional view schematically illustrating another angle of the cylinder of the compressor for vehicles according to the present invention.

Shown in the figure: 1. the oil pump comprises an air cylinder, 2, a gear box, 201, a mounting groove, 3, a transmission main shaft, 301, a groove, 4, an oil pump, 401, a pump seat, 402, a pump cover, 403, a first pump gear, 404, a second pump gear, 405, a sealing groove, 406, a limiting step, 5, an oil tank, 6, a first rotor, 7, a second rotor, 8, a mounting cavity, 9, a first transmission main shaft bearing, 10, a driving block, 11, a sealing ring, 12, a first oil inlet oil duct, 13, a second oil inlet oil duct, 14, a first oil outlet oil duct, 15, a second oil outlet oil duct, 16, a third oil outlet oil duct, 17, a fourth oil outlet oil duct, 18, a fifth oil outlet oil duct, 19, a sixth oil outlet oil duct, 21, an eighth oil outlet oil duct, 22 and an oil collecting plate.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "has," "having," "contains," and/or "containing," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

As shown in fig. 1 to 6, the present embodiment discloses a compressor for a vehicle, which includes a cylinder 1, a gear box, a transmission main shaft 3, an oil pump 4 and an oil tank 5.

The two ends of the cylinder 1 are provided with openings, a first rotor 6 and a second rotor 7 which are meshed with each other are arranged in the cylinder 1, the first rotor 6 can be a male rotor or a female rotor, and correspondingly, the second rotor 7 can be a female rotor or a male rotor. The exhaust end of the cylinder 1 is provided with a first mounting hole and a second mounting hole. The exhaust end of the first rotor 6 is mounted in the first mounting hole through a first bearing assembly and a first seal assembly, and the exhaust end of the second rotor 7 is mounted in the second mounting hole through a second bearing assembly and a second seal assembly. The air cylinder is characterized in that an air inlet seat is connected to an opening of an air inlet end of the air cylinder 1, and a third mounting hole and a fourth mounting hole are formed in the air inlet seat. The air inlet end of the first rotor 6 is mounted in the third mounting hole through a third bearing assembly and a third sealing assembly, and the air inlet end of the second rotor 7 is mounted in the fourth mounting hole through a fourth bearing assembly and a fourth sealing assembly. The air inlet seat is connected with an air inlet which is communicated with the inner cavity of the air cylinder 1.

The opening of the exhaust end of the cylinder 1 is connected with the gear box, and the edge of the exhaust end of the cylinder 1 is fixedly and hermetically connected with the edge of the gear box. An installation cavity 8 is formed between the exhaust end of the cylinder 1 and the gear box. The transmission main shaft 3 crosses the installation cavity 8, and two ends of the transmission main shaft 3 are respectively connected between the gear box and the end surface of the cylinder 1 through a first transmission main shaft bearing 9 and a second rotation main shaft bearing. The transmission main shaft 3 is positioned at one side of the cylinder 1 and above the exhaust end of the first rotor 6 and the exhaust end of the second rotor 7. The transmission main shaft 3 is in transmission connection with the exhaust end of the first rotor 6 through a gear assembly.

The side wall of the gear box is provided with a mounting groove 1, and the first transmission main shaft bearing 9 is arranged at the bottom of the mounting groove 1. The oil pump 4 is embedded in the mounting groove 1. The oil pump 4 comprises a pump base 401 and a pump cover 402, the pump cover 402 is connected to the pump base 401, and a cavity is formed between the pump base 401 and the pump cover 402. A first pump gear 403 and a second pump gear 404 are arranged in the cavity, and the first pump gear 403 and the second pump gear 404 are meshed with each other. One end of the first pump gear 403 is exposed out of the pump seat 401, a driving block 10 is fixedly connected to an end of the first pump gear 403 of the oil pump 4, a groove 301 is formed in an end of the transmission main shaft 3 installed in the first transmission main shaft bearing 9, the driving block 10 is matched in the groove 301, so that the end of the first pump gear 403 is connected with the end of the transmission main shaft 3, and the transmission main shaft 3 rotates to drive the driving block 10 and the first pump gear 403 of the oil pump 4 to rotate together. The lateral wall of pump seat 401 on be equipped with seal groove 405, seal groove 405 in be equipped with sealing washer 11, sealing washer 11 sealed in mounting groove 1 inside wall with pump seat 401 between the lateral wall. The pump cover 402 of the oil pump 4 is provided with a limiting step 406, and the limiting step 406 is limited at the notch of the mounting groove 1, so that the tail end of the oil pump 4 is exposed out of the mounting groove 1.

As shown in fig. 7 to 13, the oil tank 5 is connected to the cylinder 1, and the oil tank 5 is communicated with the oil passage. The oil tank 5 is connected to the bottom of the cylinder 1. One side of the oil pump 4 is provided with an oil inlet channel and an oil inlet, the other side of the oil pump 4 is provided with an oil outlet channel and an oil outlet, the oil outlet channel and the oil outlet are provided with a bearing axial oil nozzle, and the position of the bearing axial oil nozzle is just opposite to the ball of the first transmission main shaft bearing 9, so that the cooling and lubricating effects on the bearing are good. A first oil inlet oil duct 12 and a second oil inlet oil duct 13 are arranged in the side wall of the mounting cavity 8, one end of the first oil inlet oil duct 12 is communicated with the oil tank 5, the other end of the first oil inlet oil duct 12 is communicated with one end of the second oil inlet oil duct 13, the other end of the second oil inlet oil duct 13 is communicated with an oil inlet of the oil pump 4, and a first annular groove is formed in the other end of the second oil inlet oil duct 13. A first oil outlet channel 14, a second oil outlet channel 15 and a third oil outlet channel 16 are further arranged in the side wall of the mounting cavity 8. The initial end of the first oil outlet duct 14 is provided with a second annular groove, the initial end is connected with the oil outlet of the oil pump 4, and the annular groove structure facilitates the transportation of lubricating oil. And the first oil outlet duct 14 is provided with an oil injection port, and the position of the oil injection port is aligned with the meshing point of the gear assembly to fully lubricate and cool the gear. Lubricating oil enters the oil pump 4 along the oil duct and is transported along the first oil outlet duct 14 after being pressurized by the oil pump 4, and the first oil outlet duct 14 is arranged on the inner wall of the gear box. The second oil outlet duct 15 is arranged at the bottom of the gear box and the bottom of the cylinder, and the second oil outlet duct 15 is communicated with the first oil outlet duct 14 to extend lubricating oil from the gear box to the cylinder. The third oil outlet passage 16 is arranged in the cylinder, and the third oil outlet passage 16 is communicated with the second oil outlet passage 15. And a fourth oil outlet channel 17, a fifth oil outlet channel 18, a sixth oil outlet channel 19, a seventh oil outlet channel and an eighth oil outlet channel 20 which are mutually communicated are also arranged in the cylinder. The fourth oil outlet duct 17 is communicated with the third oil outlet duct 16, an axial oil duct is axially formed in the fourth oil outlet duct 17, an oil duct is formed in a bearing seat of the first rotor exhaust end, the axial oil duct is communicated with the fourth oil outlet duct 17, and the oil duct of the bearing seat is communicated with the axial oil duct, so that oil injection lubrication is performed on a bearing assembly of the first rotor exhaust end. And a radial oil injection port is formed in the seventh oil outlet duct and used for lubricating the synchronous gear. An oil collecting plate 21 is arranged in the gear box, and a synchronous gear at the exhaust end of the first rotor 6 and a synchronous gear at the exhaust end of the second rotor 7 rotate to flow the lubricating oil thrown onto the oil collecting plate 21 to the meshing point of the synchronous gear at the exhaust end of the first rotor 6 and the synchronous gear at the exhaust end of the second rotor 7 along the oil collecting plate 21.

When the vehicle compressor works, the driver drives the transmission main shaft 3 to rotate, and drives the oil pump 4 and the gear assembly to operate, so that the first rotor 6 is driven to rotate, and the first rotor 6 drives the second rotor 7 to work. The lubricating oil in the oil tank 5 is sucked into an oil path in the mounting cavity 8 from an oil suction port at the bottom of the cylinder 1 and then is delivered to each position requiring oil injection lubrication through the oil path.