CN210343700U

CN210343700U - Screw vortex three-stage compressor

Info

Publication number: CN210343700U
Application number: CN201921197634.5U
Authority: CN
Inventors: 沈叶凯; 司玉宝; 张炯焱
Original assignee: Ningbo Baosi Energy Equipment Co Ltd
Current assignee: Ningbo Baosi Energy Equipment Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-04-17
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses a screw scroll three-stage compressor, which comprises a motor, a screw compressor and a scroll compressor, wherein the input end of the scroll compressor is in transmission connection with the output end of the screw compressor, the input end of the screw compressor is in transmission connection with the output end of the motor, and the air inlet of the scroll compressor is communicated with the air outlet of the screw compressor; the utility model discloses can combine screw compressor and scroll compressor respective advantage and can overcome respective defect to can improve discharge pressure, volumetric efficiency, efficiency value and the performance of little discharge capacity compressor.

Description

Screw vortex three-stage compressor

Technical Field

The utility model relates to a compressor technical field, concretely relates to tertiary compressor of screw rod vortex.

Background

At present, in the compressor market, a screw compressor and a scroll compressor are designed independently, the working principle of the screw compressor is that a pair of mutually meshed male and female rotors are arranged in the screw compressor, and the purpose of compression is realized through the movement of the male and female rotors; the working principle of the scroll compressor is that a pair of mutually meshed scrolls are arranged in the scroll compressor, one of the scrolls is a movable scroll, the other is a fixed scroll, and the movable scroll rotates relative to the fixed scroll, so that the purpose of compression is realized; aiming at the defects of poor volumetric efficiency and poor energy efficiency value of a small-displacement screw compressor under the working condition of normal pressure or medium-high pressure; aiming at the problems that the scroll compressor has larger volume and is not compact in structure, the energy efficiency value is not ideal and the efficiency is higher under the working condition of large displacement; therefore, it is necessary to develop a compressor which combines the advantages of the two and overcomes the disadvantages of the two.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a tertiary compressor of screw rod vortex, it is through after combining screw compressor and scroll compressor each other, can improve discharge pressure, volumetric efficiency, efficiency value and the performance of small discharge capacity compressor.

The utility model discloses a tertiary compressor of screw scroll, including motor, screw compressor and scroll compressor, scroll compressor's input and screw compressor's output transmission are connected, and screw compressor's input and the output transmission of motor are connected, and scroll compressor's air inlet and screw compressor's gas outlet intercommunication.

The utility model discloses a screw scroll tertiary compressor, wherein, screw compressor includes the cylinder, the first order exhaust seat that fixes in cylinder one end sealedly and the second grade exhaust seat that fixes in cylinder one end sealedly, be provided with the first order compression unit between first order exhaust seat and the cylinder, be provided with the second grade compression unit between second grade exhaust seat and the cylinder, first order compression unit and second grade compression unit all are connected with motor drive, the air inlet of second grade compression unit communicates with the gas outlet of first order compression unit, the air inlet of scroll compressor communicates with the gas outlet of second grade compression unit; the front end of the cylinder is hermetically fixed with a gear box cover, the motor is fixed at the front end of the gear box cover, and an output shaft of the motor extends into the gear box cover and is fixed with a first gear.

The utility model discloses a three-stage compressor of screw rod vortex, wherein, one-level compression unit is including setting up one-level male rotor and the negative rotor of one-level between one-level exhaust seat and cylinder, and the both ends of one-level male rotor rotate with cylinder and one-level exhaust seat respectively and are connected, and the both ends of the negative rotor of one-level rotate with cylinder and one-level exhaust seat respectively and are connected, and the front end of one-level male rotor stretches into in the gear case lid and is fixed with the second gear, second gear and first gear engagement.

The utility model discloses a tertiary compressor of screw rod vortex, wherein, second grade compression unit is including setting up second grade male rotor and the cloudy rotor of second grade between second grade exhaust seat and cylinder, and the both ends of second grade male rotor rotate with cylinder and second grade exhaust seat respectively and are connected, and the both ends of the cloudy rotor of second grade rotate with cylinder and second grade exhaust seat respectively and are connected, and the front end of the cloudy rotor of second grade stretches into in the gear case lid and is fixed with third gear, third gear and first gear engagement.

The utility model discloses a tertiary compressor of screw rod vortex, wherein, scroll compressor fixes the casing at second grade exhaust seat tail end and fixes the quiet whirlpool dish at the casing tail end including sealing ground, is provided with between quiet whirlpool dish and the casing and moves the whirlpool dish, and the rear end of second grade positive rotor extends to between casing and the quiet whirlpool dish, moves the tail end fixed of whirlpool dish and second grade positive rotor.

The utility model discloses a tertiary compressor of screw rod vortex, wherein, the front end of second grade male rotor stretches into in the gear case lid, and the outside cover that is located the second grade male rotor in the gear case lid is equipped with first balancing piece, and the outside cover that is located the second grade male rotor in the casing is equipped with the second balancing piece, and first balancing piece and second balancing piece are all fixed with second grade male rotor.

The utility model discloses a three-stage screw vortex compressor, wherein, the internal perisporium of first balancing piece is provided with first keyway, is provided with the first locating key that is used for with first keyway gomphosis on the outer wall of second grade positive rotor, and first balancing piece is fixed with second grade positive rotor through the first bolt that wears to establish in first balancing piece, first bolt and first balancing piece threaded connection; the second balancing block is fixed with the second-stage male rotor through a second bolt arranged in the second balancing block in a penetrating mode, and the second bolt is in threaded connection with the second balancing block.

The utility model discloses a tertiary compressor of screw rod vortex, wherein, scroll compressor is including fixing the casing at one-level exhaust seat tail end and fixing the quiet whirlpool dish at the casing tail end with sealing, is provided with between quiet whirlpool dish and the casing and moves the whirlpool dish, and the rear end of one-level positive rotor extends to between casing and the quiet whirlpool dish, and the tail end of moving whirlpool dish and one-level positive rotor is fixed, and the casing passes through intake pipe and second grade exhaust seat intercommunication.

The utility model discloses a three-level compressor of screw rod vortex, wherein, the outside cover of one-level male rotor front end is equipped with third balancing piece, and the outside cover that is located the one-level male rotor in the casing is equipped with the fourth balancing piece, and third balancing piece and fourth balancing piece are all fixed with one-level male rotor.

The utility model discloses a three-stage compressor of screw rod vortex, wherein, be provided with the third keyway on the internal perisporium of third balancing piece, be provided with the third navigation key that is used for with third keyway gomphosis on the outer wall of one-level positive rotor, the third balancing piece is fixed with one-level positive rotor through the third bolt that wears to establish in the third balancing piece, third bolt and third balancing piece threaded connection; the inner peripheral wall of the fourth balancing block is provided with a fourth key groove, the outer wall of the first-stage male rotor is provided with a fourth positioning key used for being embedded with the fourth key groove, the fourth balancing block is fixed with the first-stage male rotor through a fourth bolt arranged in the fourth balancing block in a penetrating mode, and the fourth bolt is in threaded connection with the fourth balancing block.

The utility model discloses can combine screw compressor and scroll compressor respective advantage and can overcome respective defect to can improve discharge pressure, volumetric efficiency, efficiency value and the performance of little discharge capacity compressor.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic perspective view of a first embodiment of the present invention;

fig. 2 is a schematic perspective view of a first embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a first embodiment of the present invention;

FIG. 4 is a partially exploded view of a first embodiment of the present invention;

FIG. 5 is a partially exploded view of a first embodiment of the present invention;

fig. 6 is a schematic structural diagram of the first and second weights and the second stage male rotor according to the first embodiment of the present invention after being assembled;

fig. 7 is a schematic structural diagram of the first and second weights and the second stage male rotor according to the first embodiment of the present invention after being assembled;

fig. 8 is a schematic perspective view of a second embodiment of the present invention;

FIG. 9 is a partially exploded view of a second embodiment of the present invention;

fig. 10 is a schematic structural view of a third balancing block and a fourth balancing block of a second embodiment of the present invention after being assembled with a first-stage male rotor;

fig. 11 is a schematic structural diagram of the second embodiment of the present invention after the third and fourth balance blocks are assembled with the first-stage male rotor.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Implementation mode one

As shown in fig. 1-7, the utility model discloses a three-stage screw scroll compressor, including motor 1, screw compressor 2 and scroll compressor 3, the input of scroll compressor 3 is connected with the output transmission of screw compressor 2, and the input of screw compressor 2 is connected with the output transmission of motor 1, and the air inlet of scroll compressor 3 communicates with the gas outlet of screw compressor 2.

The screw compressor 2 comprises a cylinder 21, a first-stage exhaust seat 22 fixed at one end of the cylinder 21 in a sealing manner and a second-stage exhaust seat 23 fixed at one end of the cylinder 21 in a sealing manner, a first-stage compression unit is arranged between the first-stage exhaust seat 22 and the cylinder 21, a second-stage compression unit is arranged between the second-stage exhaust seat 23 and the cylinder 21, the first-stage compression unit and the second-stage compression unit are both in transmission connection with the motor 1, an air inlet of the second-stage compression unit is communicated with an air outlet of the first-stage compression unit, and an air inlet of the scroll compressor 3 is; this screw compressor is at the during operation, and the air that the one-level compression unit can be with in the external environment inhales the cylinder and compress the air, and the air after the compression can be carried for the second grade compression unit, and the second grade compression unit can carry out further compression with the air from the one-level compression unit to carry the air after will further compressing for scroll compressor.

The front end of the cylinder 21 is hermetically fixed with a gear box cover 4, the motor 1 is fixed at the front end of the gear box cover 4, and the output shaft of the motor 1 extends into the gear box cover 4 and is fixed with a first gear 11.

The primary compression unit comprises a primary male rotor 241 and a primary female rotor 242 which are arranged between the primary exhaust seat 22 and the cylinder 21, two ends of the primary male rotor 241 are respectively rotatably connected with the cylinder 21 and the primary exhaust seat 22, two ends of the primary female rotor 242 are respectively rotatably connected with the cylinder 21 and the primary exhaust seat 22, the front end of the primary male rotor 241 extends into the gear box cover 4 and is fixed with a second gear 243, and the second gear 243 is meshed with the first gear 11; after adopting this kind of one-level compression unit, one-level male rotor can be driven by the motor, and one-level female rotor is driven, and after one-level male rotor and one-level female rotor rotated, can inhale the cylinder with the air in the external environment and compress the air, and the air after the compression can be carried for second grade compression unit.

The two-stage compression unit comprises a two-stage male rotor 251 and a two-stage female rotor 252 which are arranged between the two-stage exhaust seat 23 and the cylinder 21, two ends of the two-stage male rotor 251 are respectively and rotatably connected with the cylinder 21 and the two-stage exhaust seat 23, two ends of the two-stage female rotor 252 are respectively and rotatably connected with the cylinder 21 and the two-stage exhaust seat 23, the front end of the two-stage female rotor 252 extends into the gear box cover 4 and is fixed with a third gear 253, and the third gear 253 is meshed with the first gear 11; after adopting this kind of second grade compression unit, the second grade negative rotor can be driven by the motor, and the second grade positive rotor is driven, and the second grade negative rotor rotates the back with the second grade positive rotor, can carry out further compression to the air that comes from the one-level compression unit, and the air after the further compression can be carried for scroll compressor.

The scroll compressor 3 comprises a shell 31 fixed at the tail end of the secondary exhaust seat 23 in a sealing way and a fixed scroll 32 fixed at the tail end of the shell 31 in a sealing way, a movable scroll 33 is arranged between the fixed scroll 32 and the shell 31, the rear end of the secondary male rotor 251 extends to a position between the shell 31 and the fixed scroll 32, and the movable scroll 33 is fixed with the tail end of the secondary male rotor 251; when the scroll compressor works, the movable scroll disk is driven by the second-stage male rotor, and after the second-stage male rotor drives the movable scroll disk to rotate, the scroll compressor can further compress air from the second-stage compression unit and discharge the further compressed air through the static scroll disk.

The front end of the secondary male rotor 251 extends into the gear box cover 4, a first balance block 254 is sleeved outside the secondary male rotor 251 positioned in the gear box cover 4, a second balance block 255 is sleeved outside the secondary male rotor 251 positioned in the shell 31, and the first balance block 254 and the second balance block 255 are both fixed with the secondary male rotor 251; the arrangement of the first balance weight and the second balance weight can ensure the dynamic balance of the secondary male rotor.

A first key groove 2541 is arranged on the inner peripheral wall of the first balance block 254, a first positioning key 2511 which is used for being embedded with the first key groove 2541 is arranged on the outer wall of the secondary male rotor 251, the first balance block 254 is fixed with the secondary male rotor 251 through a first bolt 2542 which is arranged in the first balance block 254 in a penetrating mode, and the first bolt 2542 is in threaded connection with the first balance block 254; after adopting this kind of structure, first balancing piece can realize circumferentially spacingly with second grade positive rotor, can avoid first balancing piece relative second grade positive rotor to appear free rotation's phenomenon promptly, and first balancing piece can be fixed reliably through first bolt and second grade positive rotor.

A second key groove 2551 is formed in the inner peripheral wall of the second balance block 255, a second positioning key 2512 which is used for being embedded with the second key groove 2551 is formed in the outer wall of the secondary male rotor 251, the second balance block 255 is fixed with the secondary male rotor 251 through a second bolt 2552 which is arranged in the second balance block 255 in a penetrating mode, and the second bolt 2552 is in threaded connection with the second balance block 255; after adopting this kind of structure, second balancing piece and second grade positive rotor can realize circumference spacing, can avoid the relative second grade positive rotor of second balancing piece to appear free rotation's phenomenon promptly, and the second balancing piece can be fixed reliably through second bolt and second grade positive rotor. Second embodiment

As shown in fig. 8 to 11, unlike the first embodiment:

the scroll compressor 3 comprises a shell 31 fixed at the tail end of the first-stage exhaust seat 22 and a fixed scroll 32 fixed at the tail end of the shell 31 in a sealing way, wherein a movable scroll 33 is arranged between the fixed scroll 32 and the shell 31, the rear end of the first-stage male rotor 241 extends to a position between the shell 31 and the fixed scroll 32, the movable scroll 33 is fixed with the tail end of the first-stage male rotor 241, and the shell 31 is communicated with the second-stage exhaust seat 23 through an air inlet pipe 5; when the scroll compressor works, the movable scroll disk is driven by the first-stage male rotor, and after the first-stage male rotor drives the movable scroll disk to rotate, the scroll compressor can further compress air from the second-stage compression unit and discharge the further compressed air through the static scroll disk.

The outer part of the front end of the first-stage male rotor 241 is sleeved with a third balancing block 244, the outer part of the first-stage male rotor 241 in the shell 31 is sleeved with a fourth balancing block 245, and the third balancing block 244 and the fourth balancing block 245 are both fixed with the first-stage male rotor 241; the third balancing block and the fourth balancing block are arranged, so that the dynamic balance of the first-stage male rotor can be ensured.

A third key groove 2441 is formed in the inner peripheral wall of the third balance block 244, a third positioning key 2411 for being engaged with the third key groove 2441 is formed in the outer wall of the first-stage male rotor 241, the third balance block 244 is fixed with the first-stage male rotor 241 through a third bolt 2442 penetrating through the third balance block 244, and the third bolt 2442 is in threaded connection with the third balance block 244; a fourth key groove 2451 is formed in the inner peripheral wall of the fourth balancing mass 245, a fourth positioning key 2412 for being embedded with the fourth key groove 2451 is arranged on the outer wall of the primary male rotor 241, the fourth balancing mass 245 is fixed with the primary male rotor 241 through a fourth bolt 2452 penetrating through the fourth balancing mass 245, and the fourth bolt 2452 is in threaded connection with the fourth balancing mass 245; by adopting the structure, the third balancing block and the first-stage male rotor can realize circumferential limit, namely the phenomenon that the third balancing block freely rotates relative to the first-stage male rotor can be avoided, and the third balancing block can be reliably fixed with the first-stage male rotor through the third bolt; after adopting this kind of structure, circumference is spacing can be realized with one-level male rotor to the fourth balancing piece, can avoid the relative one-level male rotor of fourth balancing piece to appear free rotation's phenomenon promptly, and the fourth balancing piece can be fixed reliably with one-level male rotor through the fourth bolt.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a three-stage compressor of screw vortex which characterized in that: including motor (1), screw compressor (2) and scroll compressor (3), the input of scroll compressor (3) is connected with the output transmission of screw compressor (2), the input of screw compressor (2) is connected with the output transmission of motor (1), the air inlet of scroll compressor (3) and the gas outlet intercommunication of screw compressor (2).

2. The three-stage screw scroll compressor according to claim 1, wherein the screw compressor (2) comprises a cylinder (21), a primary exhaust seat (22) hermetically fixed at one end of the cylinder (21) and a secondary exhaust seat (23) hermetically fixed at one end of the cylinder (21), a primary compression unit is arranged between the primary exhaust seat (22) and the cylinder (21), a secondary compression unit is arranged between the secondary exhaust seat (23) and the cylinder (21), the primary compression unit and the secondary compression unit are both in transmission connection with the motor (1), an air inlet of the secondary compression unit is communicated with an air outlet of the primary compression unit, and an air inlet of the scroll compressor (3) is communicated with an air outlet of the secondary compression unit; the front end of the cylinder (21) is hermetically fixed with a gear box cover (4), the motor (1) is fixed at the front end of the gear box cover (4), and an output shaft of the motor (1) extends into the gear box cover (4) and is fixed with a first gear (11).

3. The three-stage screw scroll compressor according to claim 2, wherein the one-stage compression unit comprises a one-stage male rotor (241) and a one-stage female rotor (242) which are arranged between a one-stage exhaust seat (22) and a cylinder (21), both ends of the one-stage male rotor (241) are respectively and rotatably connected with the cylinder (21) and the one-stage exhaust seat (22), both ends of the one-stage female rotor (242) are respectively and rotatably connected with the cylinder (21) and the one-stage exhaust seat (22), a front end of the one-stage male rotor (241) extends into a gear box cover (4) and is fixed with a second gear (243), and the second gear (243) is meshed with the first gear (11).

4. The three-stage screw scroll compressor according to claim 2, wherein the two-stage compression unit comprises a two-stage male rotor (251) and a two-stage female rotor (252) which are arranged between the two-stage discharge seat (23) and the cylinder (21), both ends of the two-stage male rotor (251) are respectively and rotatably connected with the cylinder (21) and the two-stage discharge seat (23), both ends of the two-stage female rotor (252) are respectively and rotatably connected with the cylinder (21) and the two-stage discharge seat (23), a front end of the two-stage female rotor (252) extends into the gear box cover (4) and is fixed with a third gear (253), and the third gear (253) is meshed with the first gear (11).

5. The screw scroll three-stage compressor according to claim 4, wherein the scroll compressor (3) includes a housing (31) sealingly fixed to an end of the secondary discharge base (23) and a fixed scroll (32) sealingly fixed to an end of the housing (31), an orbiting scroll (33) is disposed between the fixed scroll (32) and the housing (31), a rear end of the secondary male rotor (251) extends between the housing (31) and the fixed scroll (32), and the orbiting scroll (33) is fixed to an end of the secondary male rotor (251).

6. The three-stage screw scroll compressor according to claim 5, wherein the front end of the secondary male rotor (251) extends into the gear box cover (4), a first balance block (254) is sleeved outside the secondary male rotor (251) in the gear box cover (4), a second balance block (255) is sleeved outside the secondary male rotor (251) in the housing (31), and the first balance block (254) and the second balance block (255) are both fixed with the secondary male rotor (251).

7. The three-stage screw scroll compressor according to claim 6, wherein the first balance block (254) is provided with a first key groove (2541) on an inner peripheral wall thereof, the second-stage male rotor (251) is provided with a first positioning key (2511) on an outer wall thereof for being engaged with the first key groove (2541), the first balance block (254) is fixed with the second-stage male rotor (251) by a first bolt (2542) inserted into the first balance block (254), and the first bolt (2542) is in threaded connection with the first balance block (254); the inner peripheral wall of the second balance block (255) is provided with a second key groove (2551), the outer wall of the secondary male rotor (251) is provided with a second positioning key (2512) which is used for being embedded with the second key groove (2551), the second balance block (255) is fixed with the secondary male rotor (251) through a second bolt (2552) which is arranged in the second balance block (255) in a penetrating mode, and the second bolt (2552) is in threaded connection with the second balance block (255).

8. The three-stage screw scroll compressor according to claim 3, wherein the scroll compressor (3) comprises a housing (31) fixed at the rear end of the first stage discharge seat (22) and a fixed scroll (32) hermetically fixed at the rear end of the housing (31), an orbiting scroll (33) is disposed between the fixed scroll (32) and the housing (31), the rear end of the first stage male rotor (241) extends to between the housing (31) and the fixed scroll (32), the orbiting scroll (33) is fixed with the rear end of the first stage male rotor (241), and the housing (31) is communicated with the second stage discharge seat (23) through an air inlet pipe (5).

9. Three-stage screw scroll compressor according to claim 8, wherein the first stage male rotor (241) is externally fitted with a third balance mass (244) at the front end, and the first stage male rotor (241) in the housing (31) is externally fitted with a fourth balance mass (245), and the third balance mass (244) and the fourth balance mass (245) are fixed to the first stage male rotor (241).

10. The three-stage screw scroll compressor according to claim 9, wherein a third key groove (2441) is formed in an inner peripheral wall of the third balance block (244), a third positioning key (2411) for fitting with the third key groove (2441) is formed in an outer wall of the first-stage male rotor (241), the third balance block (244) is fixed to the first-stage male rotor (241) by a third bolt (2442) inserted into the third balance block (244), and the third bolt (2442) is threadedly coupled to the third balance block (244); the inner peripheral wall of the fourth balancing block (245) is provided with a fourth key groove (2451), the outer wall of the first-stage male rotor (241) is provided with a fourth positioning key (2412) which is used for being embedded with the fourth key groove (2451), the fourth balancing block (245) is fixed with the first-stage male rotor (241) through a fourth bolt (2452) penetrating through the fourth balancing block (245), and the fourth bolt (2452) is in threaded connection with the fourth balancing block (245).