CN216198963U

CN216198963U - Three-stage vortex rotor compressor

Info

Publication number: CN216198963U
Application number: CN202122919329.6U
Authority: CN
Inventors: 王伟; 王国章; 杜希刚
Original assignee: Hefei Sansong Hot And Cold Technology Co ltd
Current assignee: Hefei Sansong Hot And Cold Technology Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-04-05
Anticipated expiration: 2031-11-25

Abstract

The utility model provides a three-stage vortex rotor compressor, which comprises a high-low pressure isolation plate, a sealed shell, a motor mechanism, a driving crankshaft, an upper fixed vortex, a movable vortex, a lower fixed vortex and a rolling rotor.

Description

Three-stage vortex rotor compressor

Technical Field

The utility model relates to the technical field of refrigeration compressors, in particular to a three-stage scroll rotor compressor.

Background

The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, and is a heart of a refrigeration system, and is characterized by that it can suck low-temperature low-pressure refrigerant gas from air suction pipe, after it is compressed, it can discharge high-temperature high-pressure refrigerant gas into exhaust pipe to provide power for refrigeration cycle.

The publication number is CN110594152B, which mainly adopts two sets of scroll mechanisms and supporting structures, and adopts step compression to share the load of the compressor, so as to greatly improve the internal pressure ratio of the compressor compared with the traditional single set of scroll compression mechanism, and to solve the problem that the internal pressure ratio of the scroll compression mechanism is not adjustable, a pressure ratio adjusting valve is adopted to deal with the problem, but the scheme still has the following disadvantages: the compressor adopts two-stage compression to perfectly deal with when the internal pressure ratio is smaller, but when the internal pressure ratio needs to be increased continuously, some forces are not careful, and the larger internal pressure ratio cannot be realized.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a three-stage scroll rotor compressor to solve the problems set forth above in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a three-level vortex rotor compressor, includes high low pressure division board, sealed casing, motor mechanism, drive crankshaft, goes up the fixed scroll, moves the scroll, decides the scroll and rolls the rotor down, wherein:

a high-low pressure isolation plate is fixed at the upper end of the interior of the sealed shell, the high-low pressure isolation plate divides the sealed area of the interior of the sealed shell into an upper chamber I and a lower chamber II, a motor mechanism, a driving crankshaft, an upper fixed scroll, a movable scroll and a lower fixed scroll are arranged in the chamber II, the motor mechanism is mounted on the inner wall of the sealed shell and connected with the driving crankshaft for driving the driving crankshaft to rotate, and the movable scroll and a rolling rotor are mounted on the driving crankshaft;

move the vortex and have two side vortex teeth, its downside vortex tooth cooperatees with the upside vortex tooth of deciding the vortex down and forms first stage compressor, the induction port of one-level compressor directly links to each other with the breathing pipe that passes seal housing, the upside vortex tooth that moves the vortex cooperatees with the downside vortex tooth of last deciding the vortex and forms second stage compressor, the up end of going up deciding the vortex is provided with the recess, and rolls the rotor setting and be in constitute third stage compressor in the recess, the upper end of going up deciding the vortex is provided with passageway and the inside intercommunication of third stage compressor, go up deciding the vortex and decide vortex and cavity II intercommunication down, cavity I and the inside intercommunication of third stage compressor, I lateral wall of cavity is provided with the blast pipe with outside intercommunication.

Preferably, the hermetic case is composed of a case, an upper cover and a lower cover, which are respectively installed at an upper end and a lower end of the case.

Preferably, one or more gas passages are arranged on the contact surfaces of the upper fixed vortex and the lower fixed vortex and the sealed shell.

Preferably, the bottom of the lower fixed scroll is provided with one or more exhaust passages.

Preferably, a one-way exhaust valve assembly is arranged on the high-low pressure isolation plate, and the chamber I is communicated with the interior of the third-stage compressor through the exhaust valve assembly.

Preferably, the upper surface of the movable vortex is abutted with a cross ring, and the cross ring is positioned between the movable vortex and the upper fixed vortex.

Preferably, one or more air supply or liquid spraying pipes are arranged on the sealed shell and are communicated with the inside of the cavity II.

Preferably, the motor mechanism comprises a motor stator and a motor rotor, the motor stator is fixed on the inner side wall of the sealed shell, the motor rotor is movably installed in the motor stator, and the driving crankshaft is connected with the motor rotor.

Preferably, a bearing support is installed in the sealing shell, and the bottom of the driving crankshaft is rotatably inserted in the bearing support.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model combines the scroll compressor and the rotor compressor, realizes three-stage compression of inlet air, can improve the compression with higher internal pressure ratio under the condition that the volume of the whole compressor is not increased, and the rotor compressor has no problem of internal pressure ratio, so that the total internal pressure ratio of the compressor can be self-adjusted in a larger range, the reliability of the whole compressor is high, the running range of the compressor is enlarged, the efficiency of the compressor is improved, and the axial force of the movable scroll can be greatly reduced and the load of the whole compressor is reduced because the two sides of the movable scroll are provided with compressed gas.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a sealed housing and a motor mechanism according to the present invention;

FIG. 3 is a schematic structural view of an upper non-orbiting scroll in the present invention;

fig. 4 is a schematic structural view of a lower non-orbiting scroll according to the present invention.

In the figure: 1 high-low pressure isolation plate, 2 sealing shell, 201 shell, 202 upper cover, 203 lower cover, 21 cavity I, 22 cavity II, 3 motor mechanism, 301 motor stator, 302 motor rotor, 4 driving crankshaft, 5 upper fixed vortex, 51 gas channel, 52 channel, 6 movable vortex, 7 lower fixed vortex, 71 exhaust channel, 8 rolling rotor, 9 air make-up or liquid spray pipe, 10 air suction pipe, 11 exhaust pipe, 12 exhaust valve component, 13 cross ring, 14 bearing support.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1 to 4, the present invention provides a technical solution:

the utility model provides a three-level vortex rotor compressor, includes high low pressure division board 1, sealed casing 2, motor mechanism 3, drive crankshaft 4, goes up fixed vortex 5, moves vortex 6, down fixed vortex 7 and rolling rotor 8, wherein:

the sealed shell 2 is composed of a shell 201, an upper cover 202 and a lower cover 203, the upper cover 202 and the lower cover 203 are respectively installed at the upper end and the lower end of the shell 201, a high-low pressure isolation plate 1 is fixed inside the upper cover 202, the high-low pressure isolation plate 1 divides a sealed area formed by the shell 201, the upper cover 202 and the lower cover 203 into an upper chamber I21 and a lower chamber II 22, a motor mechanism 3, a driving crankshaft 4, an upper fixed scroll 5, a movable scroll 6 and a lower fixed scroll 7 are arranged in the chamber II 22, the motor mechanism 3 comprises a motor stator 301 and a motor rotor 302, the motor stator 301 is fixed on the inner side wall of the shell 201, the motor rotor 302 is movably installed in the motor stator 301, the driving crankshaft 4 is connected with the motor rotor 302, the principle is the same as that of a common motor in the prior art, when the motor mechanism 3 works, motor stator 301 is fixed, and motor rotor 302 rotates to drive driving crankshaft 4 and rotate, bearing support 14 is installed to the bottom of casing 201, driving crankshaft 4 bottom is rotated and is inserted and establish in bearing support 14, makes driving crankshaft 4's rotation more smooth and easy reliable, it installs on driving crankshaft 4 to move vortex 6 and rolling rotor 8, and the two can rotate along with driving crankshaft 4's rotation, and rolling rotor 8 is eccentric wheeled structure.

Go up fixed vortex 5 and down fixed vortex 7 and fix in cavity II 22, it has two side vortex teeth to move vortex 6, and its downside vortex tooth cooperatees with the upside vortex tooth of lower fixed vortex 7 and forms first stage compressor, it is provided with one or more exhaust passage 71 to decide vortex 7 bottom down, the induction port of first stage compressor and the breathing pipe 10 that passes seal housing 2 directly link to each other, and first stage compressor is at the during operation, moves vortex 6 and rotates for lower fixed vortex 7, and it is gaseous through breathing pipe 10 direct entering move vortex 6 and down in the compression chamber that fixed vortex 7 constitutes, through exhaust passage 71 and gas channel 51 discharge in cavity II 22 behind the one-level compression, accomplish one-level compression, the induction port and the gas vent of first stage compressor are located and move vortex 6 and down fixed vortex 7 sides.

The upper side scroll wrap of the movable scroll 6 is matched with the lower side scroll wrap of the upper fixed scroll 5 to form a second-stage compressor, the upper surface of the movable scroll 6 is abutted against a cross ring 13, the cross ring 13 is positioned between the movable scroll 6 and the upper fixed scroll 5, the cross ring 13 is matched with the upper fixed scroll 5 and the movable scroll 6 to ensure that the movable scroll 6 can only move horizontally relative to the upper fixed scroll 5, one or more gas passages 51 are arranged on the contact surfaces of the upper fixed scroll 5, the lower fixed scroll 7 and the sealing shell 2 to ensure that the upper fixed scroll 5 and the lower fixed scroll 7 are communicated with a chamber II 22 to ensure that gas can smoothly flow in the compressor, when the second-stage compressor works, the movable scroll 6 rotates relative to the upper fixed scroll 5, gas after one-stage compression is sucked through the gas passages 51 to enter a compression chamber formed by the movable scroll 6 and the upper fixed scroll 5, and enters a third-stage compression chamber through a passage 52 after the second-stage compression, and the secondary compression is completed, and because the two sides of the movable scroll 6 are provided with compressed gas, the axial force of the movable scroll can be greatly reduced, and the load of the whole compressor is reduced, and the air suction port and the air exhaust port of the secondary compressor are positioned on the side surfaces of the movable scroll 6 and the upper fixed scroll 5.

The upper end surface of the upper fixed scroll 5 is provided with a groove, the rolling rotor 8 is arranged in the groove to form a third-stage compressor, the upper end of the groove is in contact with the high-low pressure isolation plate 1 for sealing, the third-stage compressor is a rotor type compressor and has no problem of internal pressure ratio, so that the total internal pressure ratio of the compressor can be self-adjusted in a large range, the reliability of the whole compressor is high, the running range of the compressor is enlarged, the efficiency of the compressor is improved, the upper end of the upper fixed scroll 5 is provided with a channel 52 which is communicated with the inside of the third-stage compressor, the high-low pressure isolation plate 1 is provided with a one-way exhaust valve assembly 12, the chamber I21 is communicated with the inside of the third-stage compressor through the exhaust valve assembly 12, the side wall of the chamber I21 is provided with an exhaust pipe 11 communicated with the outside, and the compression with a high internal pressure ratio can be improved under the condition that the volume of the whole compressor is not increased, then discharge into cavity I21 through discharge valve subassembly 12 in to discharge the compressor through blast pipe 11, be equipped with one or more tonifying qi or spray tube 9 on seal housing 2, and tonifying qi or spray tube 9 and cavity II 22 inside intercommunication, tonifying qi or spray tube 9 can be when compressor operating condition seriously surpasss internal pressure ratio adjustment range, ensure compressor normal operating, compare with traditional direct hydrojet or tonifying qi of carrying out the hydrojet to vortex middle compression chamber, this passageway both ends pressure differential is invariable, the passageway is not restricted by the structure, and the resistance is little, and hydrojet or tonifying qi are abundant, the gas vent and the induction port of third level compressor are located respectively and decide the recess of the up end of vortex 5 and high-low pressure division board 1 contact department and recess side.

The use principle of the utility model is as follows: when the utility model is used, the motor mechanism 3 works, the motor rotor 302 in the motor mechanism drives the driving crankshaft 4 to rotate, the driving crankshaft 4 drives the movable scroll 6 and the rolling rotor 8 to rotate, the movable scroll 6 rotates relative to the upper fixed scroll 5 and the lower fixed scroll 7, gas directly enters a compression chamber formed by the movable scroll 6 and the lower fixed scroll 7 through the air suction pipe 10 to be compressed for the first stage, the gas after the first stage of compression is discharged into a chamber II 22 through the exhaust passage 71 and the gas passage 51, the compression chamber formed by the movable scroll 6 and the upper fixed scroll 5 sucks the gas after the first stage of compression through the gas passage 51 to be compressed for the second stage, the gas after the second stage of compression enters a third stage of compression chamber through the passage 52, the rolling rotor 8 rotates to compress the gas after the second stage of compression discharged from the passage 52, and then discharged into chamber i 21 through discharge valve assembly 12 and out of the compressor through discharge tube 11.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a three-level vortex rotor compressor, includes high low pressure division board (1), sealed casing (2), motor mechanism (3), drive crankshaft (4), goes up and decides vortex (5), moves vortex (6), down decides vortex (7) and rolling rotor (8), its characterized in that:

the high-low pressure separation plate (1) is fixed at the upper end of the interior of the sealed shell (2), the high-low pressure separation plate (1) divides the sealed area of the interior of the sealed shell (2) into an upper chamber I (21) and a lower chamber II (22), a motor mechanism (3), a driving crankshaft (4), an upper fixed scroll (5), a movable scroll (6) and a lower fixed scroll (7) are arranged in the chamber II (22), the motor mechanism (3) is installed on the inner wall of the sealed shell (2) and connected with the driving crankshaft (4) for driving the driving crankshaft (4) to rotate, and the movable scroll (6) and the rolling rotor (8) are installed on the driving crankshaft (4);

the movable scroll (6) is provided with bilateral scroll wraps, the scroll wrap at the lower side of the movable scroll is matched with the scroll wrap at the upper side of the lower fixed scroll (7) to form a first-stage compressor, the air suction port of the primary compressor is directly connected with an air suction pipe (10) passing through the sealed shell (2), the upper side scroll wrap of the movable scroll (6) is matched with the lower side scroll wrap of the upper fixed scroll (5) to form a second-stage compressor, the upper end surface of the upper fixed scroll (5) is provided with a groove, and the rolling rotor (8) is arranged in the groove to form a third-stage compressor, the upper end of the upper fixed scroll (5) is provided with a channel (52) communicated with the interior of the third-stage compressor, the upper fixed vortex (5) and the lower fixed vortex (7) are communicated with a chamber II (22), the chamber I (21) is communicated with the inside of the third-stage compressor, and an exhaust pipe (11) communicated with the outside is arranged on the side wall of the chamber I (21).

2. The three-stage scroll rotor compressor of claim 1, wherein: the sealed shell (2) is composed of a shell (201), an upper cover (202) and a lower cover (203), wherein the upper cover (202) and the lower cover (203) are respectively arranged at the upper end and the lower end of the shell (201).

3. The three-stage scroll rotor compressor of claim 1, wherein: one or more gas passages (51) are arranged on the contact surfaces of the upper fixed scroll (5) and the lower fixed scroll (7) and the sealed shell (2).

4. The three-stage scroll rotor compressor of claim 1, wherein: one or more exhaust passages (71) are arranged at the bottom of the lower fixed scroll (7).

5. The three-stage scroll rotor compressor of claim 1, wherein: be provided with unidirectional discharge valve subassembly (12) on high low pressure division board (1), cavity I (21) are through discharge valve subassembly (12) and the inside intercommunication of third level compressor.

6. The three-stage scroll rotor compressor of claim 1, wherein: the upper surface of the movable vortex (6) is abutted against the cross ring (13), and the cross ring (13) is positioned between the movable vortex (6) and the upper fixed vortex (5).

7. The three-stage scroll rotor compressor of claim 1, wherein: and one or more air supply or liquid spraying pipes (9) are arranged on the sealed shell (2), and the air supply or liquid spraying pipes (9) are communicated with the inside of the cavity II (22).

8. The three-stage scroll rotor compressor of claim 1, wherein: the motor mechanism (3) comprises a motor stator (301) and a motor rotor (302), the motor stator (301) is fixed on the inner side wall of the sealed shell (2), the motor rotor (302) is movably mounted in the motor stator (301), and the driving crankshaft (4) is connected with the motor rotor (302).

9. The three-stage scroll rotor compressor of claim 1, wherein: a bearing support (14) is installed in the sealed shell (2), and the bottom of the driving crankshaft (4) is rotatably inserted in the bearing support (14).