CN219827134U - Double-rotor structure of compressor - Google Patents

Abstract

The utility model discloses a double-rotor structure of a compressor, which comprises a cylinder body and a cylinder cover arranged above the cylinder body; the inner cavity of the cylinder body is provided with a first rotor and a second rotor, wherein the first rotor and the second rotor are mutually perpendicular; the cross section curves of the first rotor and the second rotor at the same axial position are conjugate; the first rotor and the second rotor form an outer Zhou Bianrong cavity together with the cylinder body and the cylinder cover respectively, wherein the outer Zhou Bianrong cavity is changed by synchronous rotation of the first rotor and the second rotor and is used for pumping fluid. According to the utility model, the first rotor and the second rotor are driven to synchronously rotate through the synchronous toothed ring, a medium enters the low-pressure chamber from the air inlet, compression work is applied by the first rotor and the second rotor, the medium is transported to the high-pressure chamber by compression work, the upper end surface and the lower end surface of the medium slide without gaps in the process of moving the medium from the low-pressure chamber to the high-pressure chamber, the gas is in the relatively closed chamber, no end surface leakage occurs, the volumetric efficiency is improved, and the power loss is reduced.

Description

Double-rotor structure of compressor

Technical Field

The utility model relates to the technical field of compressor rotors, in particular to a double-rotor structure of a compressor.

Background

In order to avoid scraping damage between the top of the rotor and the end cover and between the end face of the rotor and the pump body and blocking of the whole machine, the upper end face and the lower end face of the rotor and the end cover and the pump body are in clearance fit, a larger clearance is kept between the upper end face and the lower end face of the rotor and the pump body, the effective sealing area is very small, a certain pressure is applied to play a role in sealing, the rotor works in a sliding rotation mode with a relatively high relative friction speed, and leakage easily occurs through the clearance between the end faces when the compressor or the pump conveys media, so that the efficiency of the compressor or the pump is reduced; moreover, the disadvantage of incomplete exhaust in the pump body is also present, which causes energy loss and reduces the exhaust gas quantity, the maximum pressure rise is reduced, the working efficiency is very low, and the performance of the compressor is affected.

Disclosure of Invention

The utility model aims to provide a double-rotor structure of a compressor, which aims to solve the problems of poor end face tightness and lower volumetric efficiency of the rotor structure of the existing compressor.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a double-rotor structure of a compressor comprises a cylinder body and a cylinder cover arranged above the cylinder body; the inner cavity of the cylinder body is provided with a first rotor and a second rotor, wherein the first rotor and the second rotor are mutually perpendicular; the first rotor center point is provided with a first rotation shaft, wherein the first rotor takes the first rotation shaft as a rotation center; the second rotor center point is provided with a second rotation shaft, wherein the second rotor takes the second rotation shaft as a rotation center; the rotation phases of the first rotor and the second rotor are the same, wherein the cross section curves of the first rotor and the second rotor at the same axial position are conjugate; the first rotor and the second rotor form an outer Zhou Bianrong cavity together with the cylinder body and the cylinder cover respectively, wherein the outer Zhou Bianrong cavity is changed by synchronous rotation of the first rotor and the second rotor and is used for pumping fluid.

Preferably, the lower ends of the first rotating shaft and the second rotating shaft are respectively fixedly connected with a gear, wherein the gears are driven by a synchronous gear ring and used for driving the first rotor and the second rotor to synchronously rotate.

Preferably, the first rotor and the second rotor are identical in structure, wherein the cross section of the first rotor is 8-shaped.

Preferably, the upper ends of the first rotor and the second rotor are tightly attached to the inner wall of the cylinder cover, and the first rotor and the second rotor are in sliding connection with the inner wall of the cylinder cover; the side edges of the first rotor and the second rotor are tightly attached to the inner wall of the cylinder body, and the first rotor and the second rotor are in sliding connection with the inner wall of the cylinder body.

Preferably, one side of the cylinder body is provided with an air inlet, and the other side of the cylinder body is provided with an air outlet; the first rotor and the second rotor are sealed at one side close to the air inlet to form a low-pressure chamber, and the first rotor and the second rotor are sealed at one side close to the air outlet to form a high-pressure chamber.

Preferably, the first rotor comprises a rotor body, a top surface sliding block arranged on the upper end surface of the rotor body and a bottom surface sliding block arranged on the lower end surface of the rotor body, wherein the top surface sliding block and the bottom surface sliding block are fixedly connected with the rotor body through screws respectively.

Preferably, the rotor body is made of metal material, wherein a fixing hole matched with the first rotation shaft is formed in the center of the rotor body; the two ends of the rotor body are respectively provided with a lightening hole, wherein the rotor body is provided with a threaded hole.

Preferably, the top surface slide block and the bottom surface slide block have the same structure, wherein the top surface slide block and the bottom surface slide block are made of graphite materials or engineering plastics.

Preferably, the center of the top surface sliding block is provided with a shaft hole, and two ends of the top surface sliding block are provided with through holes corresponding to the lightening holes; and the top surface sliding block is provided with a counter bore, a screw is arranged in the counter bore, and the counter bore corresponds to the threaded hole on the upper end surface of the rotor body.

Preferably, the top surface sliding block and the bottom surface sliding block are fixed at the upper end and the lower end of the rotor body in a gluing or nested installation mode.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the first rotor and the second rotor are installed and fixed in the cylinder body at 90 degrees, and the first rotor and the second rotor are driven to synchronously rotate through the synchronous toothed ring, so that the first rotor and the second rotor are in close contact with the end face of the cylinder cover and relatively slide, no gap exists between the first rotor and the second rotor, and similarly, the first rotor and the second rotor are in close contact with the inner wall of the cylinder body and relatively slide, and no gap exists between the first rotor and the second rotor; when a medium enters the low-pressure chamber from the air inlet, compression work is performed by the first rotor and the second rotor, the medium is conveyed and moved to the high-pressure chamber by compression work, the medium is raised to the required pressure, and the medium is output from the air outlet; the upper end face and the lower end face of the medium slide without gaps in the process from the low-pressure chamber to the high-pressure chamber, the gas is in a relatively closed chamber, the end face leakage does not occur, the volumetric efficiency is improved, the power loss is reduced, the compressor can keep working with high efficiency for a long time, and the compressor has wide market prospect.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the structure of the present utility model;

FIG. 3 is a schematic exploded view of the structure of the first rotor of the present utility model;

fig. 4 is a structural cross-sectional view of the first rotor of the present utility model.

Wherein: 1. a cylinder; 2. a cylinder cover; 3. a first rotor; 301. a rotor body; 302. a top surface slider; 303. a bottom surface slide block; 4. a second rotor; 5. a first rotation shaft; 6. a second rotation shaft; 7. an air inlet; 8. an exhaust port; 9. a low pressure chamber; 10. a high pressure chamber; 11. a screw; 12. a fixing hole; 13. a lightening hole; 14. a threaded hole; 15. a shaft hole; 16. a through hole; 17. and (5) countersinking.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

Referring to fig. 1 to 4 in combination, a dual rotor structure of a compressor includes a cylinder block 1 and a cylinder head 2 disposed above the cylinder block 1; the cylinder body 1 and the cylinder cover 2 have the functions of connection and fixation and sealing at the same time; the inner cavity of the cylinder body 1 is provided with a first rotor 3 and a second rotor 4, wherein the first rotor 3 and the second rotor 4 are mutually perpendicular; the center point of the first rotor 3 is provided with a first rotation shaft 5, wherein the first rotor 3 takes the first rotation shaft 5 as a rotation center; the center point of the second rotor 4 is provided with a second rotation shaft 6, wherein the second rotor 4 takes the second rotation shaft 6 as a rotation center; the rotation phases of the first rotor 3 and the second rotor 4 are the same, wherein the cross section curves of the first rotor 3 and the second rotor 4 at the same axial position are conjugate; the first rotor 3, the second rotor 4, respectively, form with the cylinder block 1 and the cylinder head 2 an outer Zhou Bianrong cavity, wherein the outer Zhou Bianrong cavity is varied by synchronous rotation of the first rotor 3 and the second rotor 4 for pumping fluid. The medium enters a low-pressure chamber 9 from an air inlet 7, is transported to a high-pressure chamber 10 by compression work of the first rotor 3 and the second rotor 4, and rises to the required pressure and is output from an air outlet 8; in the process of medium from the low-pressure chamber 9 to the high-pressure chamber 10, the upper end face and the lower end face slide without gaps, and the gas is in a relatively closed chamber, so that the volumetric efficiency is improved, and the power loss is reduced.

Specifically, the lower ends of the first rotation shaft 5 and the second rotation shaft 6 are respectively and fixedly connected with a gear, wherein the gears are driven by a synchronous gear ring and used for driving the first rotor 3 and the second rotor 4 to synchronously rotate, the synchronous gears can enable the first rotor 3 and the second rotor 4 to synchronously rotate, the types of the synchronous gears include, but are not limited to, mechanical, electronic, variable frequency and the like, and the driving device can be a traditional motor for driving the first rotor 3 and the second rotor 4 through a transmission shaft or a direct-drive motor with motor rotors arranged in the first rotor 3 and the second rotor 4.

Specifically, the first rotor 3 and the second rotor 4 have the same structure, wherein the cross section of the first rotor 3 is 8-shaped; the cross-sectional shapes of the first rotor 3 and the second rotor 4 are not limited to the 8-shape in the present embodiment, but may be a variable volume space formed by being distributed in a cascade and being dynamically conjugated in the front-rear direction, and the volume of the variable volume space can be changed during rotation, for example, oval, oblong, elliptical, or the like.

Specifically, the upper ends of the first rotor 3 and the second rotor 4 are tightly attached to the inner wall of the cylinder cover 2, wherein the first rotor 3 and the second rotor 4 are in sliding connection with the inner wall of the cylinder cover 2; the side edges of the first rotor 3 and the second rotor 4 are tightly attached to the inner wall of the cylinder body 1, and the first rotor 3 and the second rotor 4 are in sliding connection with the inner wall of the cylinder body 1. The first rotor 3 and the second rotor 4 are in close contact with the end surface of the cylinder cover 2, relatively slide, and have no gap therebetween, and likewise, the first rotor 3 and the second rotor 4 are in close contact with the inner wall of the cylinder body 1, relatively slide, and have no gap therebetween; an air inlet 7 is formed in one side of the cylinder body 1, and an air outlet 8 is formed in the other side of the cylinder body 1; the first rotor 3 and the second rotor 4 are sealed to form a low-pressure chamber 9 on the side close to the air inlet 7, and the first rotor 3 and the second rotor 4 are sealed to form a high-pressure chamber 10 on the side close to the air outlet 8. The medium enters a low-pressure chamber 9 from an air inlet 7, is transported to a high-pressure chamber 10 by compression work of the first rotor 3 and the second rotor 4, and rises to the required pressure and is output from an air outlet 8; in the process of medium from the low-pressure chamber 9 to the high-pressure chamber 10, the upper end face and the lower end face of the first rotor 3 and the second rotor 4 slide without gaps, gas is in a relatively closed chamber, end face leakage does not occur, the volumetric efficiency is improved, and the power loss is reduced.

Specifically, the first rotor 3 includes a rotor body 301, a top surface slider 302 disposed on an upper end surface of the rotor body 301, and a bottom surface slider 303 disposed on a lower end surface of the rotor body 301, where the top surface slider 302 and the bottom surface slider 303 are fixedly connected with the rotor body 301 through screws 11 to form a whole; the end face of the top surface sliding block 302 is attached to the upper end face of the rotor body 301 without gaps, the end face of the bottom surface sliding block 303 is attached to the lower end face of the rotor body 301 without gaps, and the connecting mode that the screw 11 is connected with the threaded hole 14 is adopted, so that the structure is simple and cheap, the process is mature and reliable, and the fastening is completely free from falling.

Specifically, the rotor body 301 is made of a metal material, wherein a fixing hole 12 adapted to the first rotation shaft 5 is formed in the center of the rotor body 301; the two ends of the rotor body 301 are respectively provided with a lightening hole 13, wherein the rotor body 301 is provided with a threaded hole 14.

Specifically, the top surface slider 302 and the bottom surface slider 303 have the same structure, wherein the top surface slider 302 and the bottom surface slider 303 are made of graphite material or engineering plastic. In the embodiment, graphite materials are selected, wherein the graphite has the advantages of high wear resistance, high durability, stable property, difficult reaction of medium, mature process, low manufacturing cost, low peristaltic property, high processing precision of 0.001mm grade and the like.

Specifically, the center of the top surface sliding block 302 is provided with a shaft hole 15, wherein two ends of the top surface sliding block 302 are provided with through holes 16 corresponding to the weight reducing holes 13; the counter bore 17 is formed in the top surface slide block 302, the screw 11 is arranged in the counter bore 17, the counter bore 17 corresponds to the threaded hole 14 on the upper end face of the rotor body 301, the end face of the top surface slide block 302 is attached to the upper end face of the rotor body 301 without gaps, the top surface slide block 302 is fixedly connected with the rotor body 301 through the screw 11 to form a whole, the top surface slide blocks 302 on the upper end faces of the first rotor 3 and the second rotor 4 are conveniently in close contact with the lower end face of the cylinder cover 2, and the top surface slide blocks slide relatively, so that end face leakage does not occur, and volumetric efficiency is improved.

Specifically, the top surface slider 302 and the bottom surface slider 303 are fixed at the upper and lower ends of the rotor body 301 by gluing or nesting mounting, wherein the shape of the top surface slider 302 and the bottom surface slider 303 can be a line shape which is one with the outer ring of the rotor body 301.

To sum up: according to the utility model, the first rotor 3 and the second rotor 4 are installed and fixed in the cylinder body 1 at 90 degrees, and the first rotor 3 and the second rotor 4 are driven to synchronously rotate through the synchronous toothed ring, the upper end surfaces of the first rotor 3 and the second rotor 4 are in close contact with the lower end surface of the cylinder cover 2, and relatively slide, so that no gap exists between the upper end surfaces of the first rotor 3 and the second rotor 4, and similarly, the side edges of the first rotor 3 and the second rotor 4 are in close contact with the inner wall of the cylinder body 1, relatively slide, and no gap exists between the side edges of the first rotor 3 and the second rotor; when a medium enters the low-pressure chamber 9 from the air inlet 7, the medium is conveyed to the high-pressure chamber 10 by compression work of the first rotor 3 and the second rotor 4, and the medium is raised to the required pressure and is output from the air outlet 8; the upper end face and the lower end face of the medium slide without gaps in the process from the low-pressure chamber 9 to the high-pressure chamber 10, the gas is in a relatively closed chamber, the end face leakage does not occur, the volumetric efficiency is improved, the power loss is reduced, and the compressor can conveniently maintain the work with high efficiency for a long time.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (10)

1. The double-rotor structure of the compressor comprises a cylinder body (1) and a cylinder cover (2) arranged above the cylinder body (1); the device is characterized in that a first rotor (3) and a second rotor (4) are arranged in an inner cavity of the cylinder body (1), wherein the first rotor (3) and the second rotor (4) are mutually perpendicular; the center point of the first rotor (3) is provided with a first rotation shaft (5), wherein the first rotor (3) takes the first rotation shaft (5) as a rotation center; the center point of the second rotor (4) is provided with a second rotation shaft (6), wherein the second rotor (4) takes the second rotation shaft (6) as a rotation center; the rotation phases of the first rotor (3) and the second rotor (4) are the same, wherein the cross section curves of the first rotor (3) and the second rotor (4) at the same axial position are conjugate; the first rotor (3) and the second rotor (4) respectively form an outer Zhou Bianrong cavity with the cylinder body (1) and the cylinder cover (2), wherein the outer Zhou Bianrong cavity is changed by synchronous rotation of the first rotor (3) and the second rotor (4) and is used for pumping fluid.

2. The double-rotor structure of the compressor according to claim 1, wherein gears are fixedly connected to the lower ends of the first rotating shaft (5) and the second rotating shaft (6), respectively, and the gears are driven by a synchronous gear ring and used for driving the first rotor (3) and the second rotor (4) to synchronously rotate.

3. A compressor double rotor structure according to claim 2, wherein the first rotor (3) and the second rotor (4) are identical in structure, and wherein the first rotor (3) has a cross-sectional shape of an "8".

4. A compressor double-rotor structure according to claim 3, wherein the upper ends of the first rotor (3) and the second rotor (4) are tightly attached to the inner wall of the cylinder cover (2), and the first rotor (3) and the second rotor (4) are slidingly connected with the inner wall of the cylinder cover (2); the side edges of the first rotor (3) and the second rotor (4) are tightly attached to the inner wall of the cylinder body (1), and the first rotor (3) and the second rotor (4) are in sliding connection with the inner wall of the cylinder body (1).

5. A compressor double rotor structure according to claim 1, wherein one side of the cylinder (1) is provided with an air inlet (7), and wherein the other side of the cylinder (1) is provided with an air outlet (8); the first rotor (3) and the second rotor (4) are sealed at one side close to the air inlet (7) to form a low-pressure chamber (9), and the first rotor (3) and the second rotor (4) are sealed at one side close to the air outlet (8) to form a high-pressure chamber (10).

6. The double-rotor structure of the compressor according to claim 1, wherein the first rotor (3) comprises a rotor body (301), a top surface slider (302) arranged on the upper end surface of the rotor body (301), and a bottom surface slider (303) arranged on the lower end surface of the rotor body (301), wherein the top surface slider (302) and the bottom surface slider (303) are fixedly connected with the rotor body (301) through screws (11) respectively.

7. The double-rotor structure of the compressor according to claim 6, wherein the rotor body (301) is made of a metal material, and a fixing hole (12) adapted to the first rotation shaft (5) is formed in the center of the rotor body (301); the two ends of the rotor body (301) are respectively provided with a lightening hole (13), wherein the rotor body (301) is provided with a threaded hole (14).

8. The double-rotor structure of a compressor according to claim 7, wherein the top surface slider (302) and the bottom surface slider (303) are identical in structure, and wherein the top surface slider (302) and the bottom surface slider (303) are made of graphite material or engineering plastic.

9. The double-rotor structure of the compressor according to claim 8, wherein the center of the top surface sliding block (302) is provided with a shaft hole (15), and through holes (16) corresponding to the weight reducing holes (13) are formed at two ends of the top surface sliding block (302); and a counter bore (17) is formed in the top surface sliding block (302), a screw (11) is arranged in the counter bore (17), and the counter bore (17) corresponds to the threaded hole (14) in the upper end surface of the rotor body (301).

10. A compressor double rotor structure according to claim 9, wherein the top slider (302) and the bottom slider (303) are fixed to the upper and lower ends of the rotor body (301) by means of gluing or nesting.