CN117307440B - Frequency conversion level middle oil-free vacuum compressor - Google Patents
Frequency conversion level middle oil-free vacuum compressor Download PDFInfo
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- CN117307440B CN117307440B CN202311612060.4A CN202311612060A CN117307440B CN 117307440 B CN117307440 B CN 117307440B CN 202311612060 A CN202311612060 A CN 202311612060A CN 117307440 B CN117307440 B CN 117307440B
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- 238000006243 chemical reaction Methods 0.000 title claims description 3
- 230000006835 compression Effects 0.000 claims abstract description 34
- 238000007906 compression Methods 0.000 claims abstract description 34
- 230000000712 assembly Effects 0.000 claims abstract description 30
- 238000000429 assembly Methods 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 5
- 238000007667 floating Methods 0.000 claims description 42
- 238000013016 damping Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 11
- 239000010985 leather Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B27/0404—Details, component parts specially adapted for such pumps
- F04B27/0409—Pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B27/0404—Details, component parts specially adapted for such pumps
- F04B27/0423—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B27/0404—Details, component parts specially adapted for such pumps
- F04B27/0451—Particularities relating to the distribution members
- F04B27/0465—Particularities relating to the distribution members to plate like distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B27/053—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with an actuating element at the inner ends of the cylinders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Abstract
The invention belongs to the technical field of compressors for oxygenerators, and particularly provides a variable-frequency horizontal middle-set oil-free vacuum compressor, which comprises a motor and two groups of vacuum compression mechanisms, wherein the motor is a bidirectional motor, and the two groups of vacuum compression mechanisms are respectively axially assembled on two sides of the motor; the vacuum compression mechanism comprises a lower base, a supporting body, an upper base, a cylinder assembly and an eccentric shaft. The support body is formed by integrating a rectangular base and four upright posts. The invention adopts a middle eight-cylinder symmetrical design, can relatively reduce the working frequency of the cylinder assembly on the premise of ensuring stable working pressure and compression flow, so as to reduce the working heat production quantity of the cylinder assembly, and simultaneously, a plurality of cylinder assemblies can also play the role of distributing hot spots; the assembly angles of the two eccentric shafts differ by 180 degrees, and partial forces of all the cylinder assemblies are balanced, so that the running torque fluctuation of a motor shaft is reduced, and the working efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of compressors for oxygenerators, and particularly provides a variable-frequency horizontal middle-arranged oil-free vacuum compressor.
Background
In the field of design and manufacture of oxygenerators, common structures of oil-free vacuum compressors include double-cylinder horizontal symmetrical structures, V-shaped double-cylinder structures, tetrahedron structures and the like.
The conventional structure of the tetrahedral oil-free vacuum compressor is that four cylinders are driven to alternately operate through the output end of a motor and the eccentric shaft transmission to realize the vacuum compression effect. This type of vacuum compressor can satisfy the work demand of most oxygen scenes, but consider low atmospheric pressure environment such as altitude operation (the higher the altitude, the rarefaction of air, the actual oxygen volume in the same volume of air reduces), because the rarefaction of air, the high-frequency operation of vacuum compressor is required to satisfy the oxygenerator demand, and the high-frequency operation's cylinder subassembly can produce a large amount of working heat, leads to cylinder subassembly life to be shorter than anticipated far.
Disclosure of Invention
In order to achieve the above purpose, the invention adopts the following technical scheme: the variable-frequency horizontal middle-set oil-free vacuum compressor comprises a motor and two groups of vacuum compression mechanisms, wherein the motor is a bidirectional motor, and the two groups of vacuum compression mechanisms are respectively axially assembled on two sides of the motor;
the vacuum compression mechanism comprises a lower base, a supporting body, an upper base, cylinder assemblies and an eccentric shaft, wherein the lower base is fixedly connected with the end face of the motor, the supporting body is axially and fixedly arranged on the lower base, the upper base is fixedly arranged on the end face of the supporting body, the cylinder assemblies are radially assembled on the side wall of the supporting body, the eccentric shaft is fixedly arranged on the output shaft of the motor, and the output shaft of the motor drives the cylinder assemblies through the eccentric shaft.
Further, the vacuum compression mechanism is provided with four cylinder assemblies, and the four cylinder assemblies are distributed in a central symmetry manner, namely, the assembly included angle of the two connected cylinder assemblies is 90 degrees;
the assembly angles of the two eccentric shafts differ by 180 deg..
Further, the support body is formed by integrating a rectangular base and four upright posts, two bottom air chambers are symmetrically arranged on the bottom surface of the rectangular base of the support body, two upper floating cylinder assembly positions and two lower floating cylinder assembly positions are respectively arranged on the four side walls of the support body, the two upper floating cylinder assembly positions are distributed oppositely, and correspondingly, the two lower floating cylinder assembly positions are also distributed oppositely;
wherein the upper floating cylinder assembly position is positioned at the position with the middle part being inclined upwards, the lower floating cylinder assembly position is positioned at the position with the middle part being inclined downwards, air passages are arranged in the four upright posts of the support body, the side wall of the support body is provided with a first air inlet and outlet port, a cylinder body connecting port and a communication port, the first air inlet and outlet are positioned below the assembly position of the floating cylinder, the cylinder body connectors are positioned at two sides of the assembly position of the floating cylinder, the first air inlet and outlet and the cylinder body connectors are communicated with the bottom air chamber, the communication ports are positioned at two sides of the assembly position of the floating cylinder, and the communication ports are communicated with the air passage;
the four air cylinder assemblies are respectively assembled at the two upper floating air cylinder assembling positions and the two lower floating air cylinder assembling positions.
Further, two top air chambers are symmetrically arranged on the top surface of the upper base, an air chamber cover is buckled on the top surface of the upper base in a sealing way, four air passage connectors are arranged on the bottom surface of the upper base, the four air passage connectors are respectively communicated with the two top air chambers in pairs, the four air passage connectors are respectively in butt joint with the four air passages, two second air inlet and outlet openings are arranged on the side wall of the upper base, and the two second air inlet and outlet openings are respectively communicated with the two top air chambers.
Further, the cylinder assembly comprises a cylinder body, a connecting rod, a valve plate and a valve chamber, one end of the connecting rod is of an annular structure, the other end of the connecting rod is of a piston head, the annular structure is rotationally connected with the eccentric shaft through a bearing, a cup pressing plate is assembled on the end face of the piston head, a cup is clamped and fixed between the cup pressing plate and the piston head, the cup and the cup pressing plate are arranged in the cylinder body, two cavities are symmetrically arranged in the valve chamber, the valve plate and the valve chamber are buckled, an air vent and an air inlet hole are formed in the valve plate, the air vent and the air inlet hole are respectively communicated with the two cavities, a valve plate is assembled on one side of the valve plate at the air vent and used for one-way blocking the air vent, and a valve plate is assembled on one side of the air inlet hole and is away from the valve chamber and used for one-way blocking the air inlet hole;
and a buffer hole is formed in the leather cup pressing plate, a buffer sheet is assembled at the buffer hole, and the buffer sheet is positioned at one side close to the connecting rod.
Further, be provided with a plurality of screw rod assembly seats on the lateral wall of motor axial, be equipped with a plurality of damping screw rods between two sets of vacuum compression mechanism, damping screw rod's middle part has all cup jointed damping sleeve spare, and damping screw rod passes through damping sleeve spare joint in screw rod assembly seat department.
Further, the cylinder assembly at the assembling position of the floating cylinder is a compression cylinder group, and the cylinder assembly at the assembling position of the floating cylinder is a vacuum cylinder group;
the valve plate and the valve chamber of the compression cylinder group are respectively a first valve plate and a first valve chamber, the valve plate and the valve chamber of the vacuum cylinder group are respectively a second valve plate and a second valve chamber, the appearance of the first valve plate is different from that of the second valve plate, and the appearance of the first valve chamber is different from that of the second valve chamber.
The beneficial effects of using the invention are as follows:
the invention adopts a middle eight-cylinder symmetrical design, can relatively reduce the working frequency of the cylinder assembly on the premise of ensuring stable working pressure and compression flow, so as to reduce the working heat production quantity of the cylinder assembly, and simultaneously, a plurality of cylinder assemblies can also play the role of distributing hot spots;
the assembly angles of the two eccentric shafts differ by 180 degrees, and partial forces of all the cylinder assemblies are balanced, so that the running torque fluctuation of a motor shaft is reduced, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic diagram of the motor of the present invention;
FIG. 4 is a schematic view of the structure of the lower base, the supporting body and the upper base of the present invention;
FIG. 5 is a schematic view of another structure of the lower base, the supporting body and the upper base of the present invention;
FIG. 6 is a schematic view of the surface of the support body of the present invention on which the floating cylinder assembly is located;
FIG. 7 is a cross-sectional view taken at A-A of FIG. 6;
FIG. 8 is an exploded view of the cylinder block and connecting rod portion of the cylinder assembly of the present invention;
FIG. 9 is an exploded view of a valve chamber portion of the cylinder assembly of the present invention;
FIG. 10 is another exploded view of the valve chamber portion of the compression cylinder bank of the present invention;
FIG. 11 is an exploded view of the valve chamber portion of the vacuum cylinder block of the present invention;
FIG. 12 is another exploded view of the valve chamber portion of the vacuum cylinder bank of the present invention;
FIG. 13 is a schematic view showing an assembled state of the eccentric shaft of the present invention;
the reference numerals include:
1-a motor;
101-a screw assembly base; 102-a damping screw; 103-a shock absorbing sleeve;
2-a lower base;
3-a support;
301-bottom plenum; 302-a first air inlet and outlet; 303-cylinder connection port; 304-airway; 305-communication ports; 306-floating cylinder assembly; 307-assembling the floating cylinder;
4-an upper base;
401-a plenum cover; 402-top plenum; 403-airway connection port; 404-a second air inlet and outlet;
a 5-cylinder assembly;
501-a cylinder; 502-connecting rod; 503-leather cup; 504-a leather cup pressing plate; 505-buffer holes; 506-buffer sheet; 507—a valve plate; 508-ventilation holes; 509-valve plates; 510-an air inlet hole; 511-valve chamber;
5071-a first valve plate; 5111-first valve chamber; 5072-a second valve plate; 5112-second valve chamber;
6-eccentric shaft.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
Example 1
Referring to fig. 1-2, the variable frequency horizontal middle-set oil-free vacuum compressor comprises a motor 1 and two groups of vacuum compression mechanisms, wherein the motor 1 is a bidirectional motor, and the two groups of vacuum compression mechanisms are respectively axially assembled on two sides of the motor 1;
the vacuum compression mechanism comprises a lower base 2, a support body 3, an upper base 4, an air cylinder assembly 5 and an eccentric shaft 6, wherein the lower base 2 is fixedly connected with the end face of the motor 1, the support body 3 is axially and fixedly installed on the lower base 2, the upper base 4 is fixedly installed on the end face of the support body 3, a plurality of air cylinder assemblies 5 are radially assembled on the side wall of the support body 3, the eccentric shaft 6 is fixedly installed on the output shaft of the motor 1, and the output shaft of the motor 1 drives the air cylinder assemblies 5 through the eccentric shaft 6.
Preferably, each group of vacuum compression mechanism is provided with four cylinder assemblies 5, and the four cylinder assemblies 5 are distributed in a central symmetry manner, namely, the assembly included angle of the two connected cylinder assemblies 5 is 90 degrees;
referring to fig. 13, the assembly angles of the two eccentric shafts 6 differ by 180 °;
with the midpoint of the motor 1 as a reference, when the eight cylinder assemblies 5 respectively enter and go into and go out of the vacuum or compression stroke, the running states of the two cylinder assemblies 5 with relatively symmetrical positions are opposite, and the adjacent cylinder assemblies 5 always keep 90-degree phase difference with each other, so that partial forces of the cylinder assemblies 5 are neutralized and balanced, the running torque fluctuation of a motor shaft is reduced, and the working efficiency is improved.
Preferably, the motor 1 is a bidirectional variable frequency motor, and the operation rotating speed of the motor 1 can be adaptively adjusted by matching with an altitude sensor and a pressure sensor, so that the effects of increasing the output gas amount and reducing the energy consumption are achieved.
Standard oxygenerator gas source requirements: working pressure 0.14MPa and compression flow 35 liter are standard;
recording the motor speed data of a conventional machine type (tetrahedral structure oil-free vacuum compressor) and the motor speed data of the machine type (the limit speed of the motor is 2500);
| elevation (Rice) | Conventional motor speed (rpm) | Motor speed of the present model (rpm) |
| 2000 | 1500 | 650 |
| 3000-4000 | 2300 | 1250 |
| 4000-5000 | 2500 (compressed flow 20 liter) | 2500 |
The data of the table show that the machine type can effectively ensure the compression flow under the conditions of no service life and low operation power consumption at the altitude of 2000-4000 meters, and the conventional machine type is difficult to provide the compression flow of 35 liters even under the altitude of 4000-5000 meters, and the machine type can still achieve the key index of effective oxygen production under the condition of full-load operation.
Example two
Compared to the first embodiment, the difference of this embodiment is that:
referring to fig. 1-10, a support body 3 is formed by integrally forming a rectangular base and four upright posts, two bottom air chambers 301 are symmetrically arranged on the bottom surface of the rectangular base of the support body 3, two floating cylinder assembling positions 306 and two floating cylinder assembling positions 307 are respectively arranged on four side walls of the support body 3, the two floating cylinder assembling positions 306 are oppositely distributed, and correspondingly, the two floating cylinder assembling positions 307 are oppositely distributed, wherein the floating cylinder assembling positions 306 are located at the position with the upper middle part, the floating cylinder assembling positions 307 are located at the position with the lower middle part, air passages 304 are arranged in the four upright posts of the support body 3, first air inlet and outlet openings 302, cylinder connecting openings 303 and communication openings 305 are arranged on the side walls of the support body 3, the first air inlet and outlet openings 302 are located below the floating cylinder assembling positions 306, the cylinder connecting openings 303 are located at two sides of the lower floating cylinder assembling positions 307, the first air inlet and outlet openings 302 and the cylinder connecting openings 303 are communicated with the bottom air chambers 301, and the communication openings 305 are located at two sides of the floating cylinder assembling positions 306, and the communication openings 305 are communicated with the air passages;
the four cylinder assemblies 5 are respectively assembled at two floating cylinder assembling positions 306 and two floating cylinder assembling positions 307;
two top air chambers 402 are symmetrically arranged on the top surface of the upper base 4, an air chamber cover 401 is buckled on the top surface of the upper base 4 in a sealing way, four air passage connectors 403 are arranged on the bottom surface of the upper base 4, the four air passage connectors 403 are respectively communicated with the two top air chambers 402 in pairs, the four air passage connectors 403 are respectively in butt joint with the four air passages 304, two second air inlet and outlet ports 404 are arranged on the side wall of the upper base 4, and the two second air inlet and outlet ports 404 are respectively communicated with the two top air chambers 402.
Preferably, a plurality of screw rod assembly seats 101 are axially arranged on the side wall of the motor 1, a plurality of damping screws 102 are assembled between the two groups of vacuum compression mechanisms, damping sleeve members 103 are sleeved at the middle parts of the damping screws 102, and the damping screws 102 are clamped at the screw rod assembly seats 101 through the damping sleeve members 103.
The cylinder assembly 5 comprises a cylinder body 501, a connecting rod 502, a valve plate 507 and a valve chamber 511, wherein one end of the connecting rod 502 is of an annular structure, the other end of the connecting rod is a piston head, the annular structure is rotationally connected with an eccentric shaft 6 through a bearing, a cup pressing plate 504 is assembled on the end face of the piston head, a cup 503 is clamped and fixed between the cup pressing plate 504 and the piston head, the cup 503 and the cup pressing plate 504 are arranged in the cylinder body 501, two cavities are symmetrically arranged in the valve chamber 511, the valve plate 507 and the valve chamber 511 are buckled, an air vent 508 and an air inlet 510 are arranged on the valve plate 507, the air vent 508 and the air inlet 510 are respectively communicated with the two cavities, a valve plate 509 is assembled on one side of the valve chamber 511 at the air vent 508 and used for one-way blocking the air vent 508, and a valve plate 509 is assembled on one side of the air inlet 510 and is arranged on the side away from the valve chamber 511 and used for one-way blocking 510;
the leather cup pressing plate 504 is provided with a buffer hole 505, a buffer sheet 506 is assembled at the buffer hole 505, and the buffer sheet 506 is positioned at one side close to the connecting rod 502.
The first air inlet and outlet port 302 and the second air inlet and outlet port 404 are respectively connected with an external air inlet and outlet pipeline.
During operation of the device, a part of air flow passes through the lower base 2 and is communicated with the cylinder assembly 5 through the cylinder body connecting port 303, and the other part of air flow passes through the upper base 4 and is communicated with the cylinder assembly 5 through the air passage 304 and the communication port 305.
Example III
Compared with the second embodiment, the difference of this embodiment is that:
referring to fig. 8-12, the two cylinder assemblies 5 located at the floating cylinder assembly locations 306 are compression cylinder banks; the two cylinder assemblies 5 located at the lower floating cylinder assembly 307 are vacuum cylinder groups;
referring to fig. 9 and 10, the valve plate 507 and the valve chamber 511 of the compression cylinder group are a first valve plate 5071 and a first valve chamber 5111, respectively, the first valve plate 5071 and the first valve chamber 5111 are regular rectangular in outer shape, and four corners are rounded;
referring to fig. 11 and 12, the valve plate 507 and the valve chamber 511 of the vacuum cylinder group are a second valve plate 5072 and a second valve chamber 5112, respectively, the second valve plate 5072 and the second valve chamber 5112 are rectangular in shape, four sides of the valve plate 507 and the valve chamber 511 are arc-shaped which are concave inwards, and four corners of the valve plate are chamfer angles;
the appearance difference of the compression cylinder group and the vacuum cylinder group is favorable for distinguishing the assembly positions of the accessories in the assembly process, plays a foolproof effect, and is favorable for carrying out specialized optimization on the compression cylinder group and the vacuum cylinder group in the subsequent design improvement process.
The foregoing is merely exemplary of the present invention, and many variations may be made in the specific embodiments and application scope of the invention by those skilled in the art based on the spirit of the invention, as long as the variations do not depart from the gist of the invention.
Claims (4)
1. Frequency conversion level centrally-arranged oil-free vacuum compressor is characterized in that: the device comprises a motor and two groups of vacuum compression mechanisms, wherein the motor is a bidirectional motor, and the two groups of vacuum compression mechanisms are axially assembled on two sides of the motor respectively;
the vacuum compression mechanism comprises a lower base, a support body, an upper base, cylinder assemblies and an eccentric shaft, wherein the lower base is fixedly connected with the end face of the motor, the support body is axially and fixedly arranged on the lower base, the upper base is fixedly arranged on the end face of the support body, the cylinder assemblies are radially assembled on the side wall of the support body, the eccentric shaft is fixedly arranged on the output shaft of the motor, and the output shaft of the motor drives the cylinder assemblies through the eccentric shaft;
the vacuum compression mechanism is provided with four cylinder assemblies, and the four cylinder assemblies are distributed in a central symmetry manner, namely, the assembly included angle of the two connected cylinder assemblies is 90 degrees;
the assembly angles of the two eccentric shafts differ by 180 degrees;
the support body is formed by integrating a rectangular base and four upright posts, two bottom air chambers are symmetrically arranged on the bottom surface of the rectangular base of the support body, two upper floating cylinder assembly positions and two lower floating cylinder assembly positions are respectively arranged on the four side walls of the support body, the two upper floating cylinder assembly positions are distributed oppositely, and correspondingly, the two lower floating cylinder assembly positions are also distributed oppositely;
wherein the upper floating cylinder assembly position is positioned at the position with the middle part being inclined upwards, the lower floating cylinder assembly position is positioned at the position with the middle part being inclined downwards, air passages are arranged in the four upright posts of the support body, the side wall of the support body is provided with a first air inlet and outlet port, a cylinder body connecting port and a communication port, the first air inlet and outlet are positioned below the assembly position of the floating cylinder, the cylinder body connectors are positioned at two sides of the assembly position of the floating cylinder, the first air inlet and outlet and the cylinder body connectors are communicated with the bottom air chamber, the communication ports are positioned at two sides of the assembly position of the floating cylinder, and the communication ports are communicated with the air passage;
the four air cylinder assemblies are respectively assembled at two upper floating air cylinder assembling positions and two lower floating air cylinder assembling positions;
the top surface symmetry of going up the base has seted up two top air chambers, and the sealed lock has the air chamber lid on the top surface of going up the base, has seted up four air flue connectors on the bottom surface of going up the base, four air flue connectors pairwise communicate with two top air chambers respectively, and four air flue connectors dock with four air flue respectively, has seted up two second air inlet and outlet on the lateral wall of going up the base, two second air inlet and outlet communicate with two top air chambers respectively.
2. The variable frequency horizontal center oil free vacuum compressor of claim 1 wherein: the cylinder assembly comprises a cylinder body, a connecting rod, a valve plate and a valve chamber, wherein one end of the connecting rod is of an annular structure, the other end of the connecting rod is of a piston head, the annular structure is rotationally connected with an eccentric shaft through a bearing, a leather cup pressing plate is assembled on the end face of the piston head, a leather cup is clamped and fixed between the leather cup pressing plate and the piston head, the leather cup and the leather cup pressing plate are arranged in the cylinder body, two cavities are symmetrically arranged in the valve chamber, the valve plate is buckled with the valve chamber, an air vent and an air inlet hole are formed in the valve plate, the air vent and the air inlet hole are respectively communicated with the two cavities, a valve plate is assembled on one side of the valve chamber at the air vent and used for one-way blocking, and a valve plate is assembled on one side of the air inlet hole, which is away from the valve chamber, and used for one-way blocking the air inlet hole;
and a buffer hole is formed in the leather cup pressing plate, a buffer sheet is assembled at the buffer hole, and the buffer sheet is positioned at one side close to the connecting rod.
3. The variable frequency horizontal center oil free vacuum compressor of claim 1 wherein: a plurality of screw rod assembly seats are axially arranged on the side wall of the motor, a plurality of damping screws are assembled between the two groups of vacuum compression mechanisms, damping sleeve members are sleeved at the middle parts of the damping screws, and the damping screws are clamped at the screw rod assembly seats through the damping sleeve members.
4. The variable frequency horizontal center oil free vacuum compressor of claim 1 wherein: the cylinder assembly at the assembling position of the floating cylinder is a compression cylinder group, and the cylinder assembly at the assembling position of the floating cylinder is a vacuum cylinder group;
the valve plate and the valve chamber of the compression cylinder group are respectively a first valve plate and a first valve chamber, the valve plate and the valve chamber of the vacuum cylinder group are respectively a second valve plate and a second valve chamber, the appearance of the first valve plate is different from that of the second valve plate, and the appearance of the first valve chamber is different from that of the second valve chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311612060.4A CN117307440B (en) | 2023-11-29 | 2023-11-29 | Frequency conversion level middle oil-free vacuum compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311612060.4A CN117307440B (en) | 2023-11-29 | 2023-11-29 | Frequency conversion level middle oil-free vacuum compressor |
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| Publication Number | Publication Date |
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| CN117307440A CN117307440A (en) | 2023-12-29 |
| CN117307440B true CN117307440B (en) | 2024-01-30 |
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| CN202311612060.4A Active CN117307440B (en) | 2023-11-29 | 2023-11-29 | Frequency conversion level middle oil-free vacuum compressor |
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| CN106121957A (en) * | 2016-08-30 | 2016-11-16 | 重庆气体压缩机厂有限责任公司 | A kind of piston compressor |
| CN106194651A (en) * | 2016-08-31 | 2016-12-07 | 瑞立集团瑞安汽车零部件有限公司 | A kind of main air compressor machine of electronic oil-free |
| CN106704139A (en) * | 2017-01-15 | 2017-05-24 | 刘明生 | Electromagnetic gas compressor |
| CN116906296A (en) * | 2023-09-14 | 2023-10-20 | 沈阳海龟医疗科技有限公司 | V-shaped vacuum compressor |
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| US20180195503A1 (en) * | 2017-01-11 | 2018-07-12 | Bristol Compressors International, Llc | Fluid compressor |
| US20180291885A1 (en) * | 2017-04-06 | 2018-10-11 | Gardner Denver Thomas, Inc. | Valve plate and head cover assembly |
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| CN102086853A (en) * | 2009-12-04 | 2011-06-08 | 迈奇两合公司 | Piston machine for use as a vacuum pump for medical purposes |
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| CN106704139A (en) * | 2017-01-15 | 2017-05-24 | 刘明生 | Electromagnetic gas compressor |
| CN116906296A (en) * | 2023-09-14 | 2023-10-20 | 沈阳海龟医疗科技有限公司 | V-shaped vacuum compressor |
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