CN117072439A - Labyrinth rotor compressor - Google Patents

Labyrinth rotor compressor Download PDF

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Publication number
CN117072439A
CN117072439A CN202211656511.XA CN202211656511A CN117072439A CN 117072439 A CN117072439 A CN 117072439A CN 202211656511 A CN202211656511 A CN 202211656511A CN 117072439 A CN117072439 A CN 117072439A
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CN
China
Prior art keywords
labyrinth
rotor
cylindrical surface
cylinder body
compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211656511.XA
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Chinese (zh)
Inventor
刘忠臣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian Qixiang Technology Co ltd
Original Assignee
Dalian Qixiang Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202210887884.1A external-priority patent/CN115143112A/en
Application filed by Dalian Qixiang Technology Co ltd filed Critical Dalian Qixiang Technology Co ltd
Publication of CN117072439A publication Critical patent/CN117072439A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/40—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and having a hinged member
    • F04C18/44—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and having a hinged member with vanes hinged to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C21/00—Oscillating-piston pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/10—Stators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/601—Shaft flexion

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

The invention provides a labyrinth rotor compressor, which comprises a cylinder body (1), an end cover (2), a rotor (6), a sliding sheet (7) and a crankshaft (10), wherein the crankshaft (10) is concentrically arranged with the inner cylindrical surface of the cylinder body (1) through a bearing on the end cover (2), and an eccentric journal (12) of the crankshaft (10) is concentrically arranged with the outer cylindrical surface of the rotor (6), and is characterized in that: the inner cylindrical surface of the cylinder body (1) is internally tangent with the outer cylindrical surface of the rotor (6), and at least one of the outer cylindrical surface of the rotor (6) or the inner cylindrical surface of the cylinder body (1) is provided with a plurality of labyrinth grooves (3) along the axis parallel direction to form the labyrinth rotor compressor. The invention can be applied to a refrigeration compressor, an air compressor, a natural gas compressor, a vacuum pump, an oil delivery pump, a pneumatic motor and a hydraulic motor.

Description

Labyrinth rotor compressor
Technical Field
The invention belongs to the technical field of mechanical engineering, relates to an engine and a pump, relates to a variable capacity machine, such as a rotor compressor or a pump or a motor, relates to a hydraulic machine or a hydraulic engine, a wind power engine, a liquid variable capacity machine, a liquid or elastic fluid pump, a fluid pressure executing mechanism, a general hydraulic technology and a pneumatic technology, and particularly relates to a compressor and a pump for conveying gas or liquid, in particular to an air compressor, a natural gas compressor, a refrigeration compressor, a heat pump compressor, a vacuum pump and an oil delivery pump, and can also be used as a pneumatic motor or a hydraulic motor.
Background
The rotor type compressor has a simple structure, low cost and more application in the market of refrigeration compressors. The cylindrical rotor of the rotor type compressor is in linear contact with the cylindrical cylinder sleeve in theory, the air tightness is poor, the contact line is changed at any time and is not easy to seal by embedding sealing strips in conventional sealing grooves, and the problem that the leakage amount is large is verified when the rotor type compressor is used for an air compressor test due to long pressure rising time. This serious leakage problem makes current rotor compressors unsuitable for use as air compressors, as well as compressors that deliver clean gas, such as natural gas compressors.
Disclosure of Invention
The invention aims to overcome the defects in the technology and provide the rotor compressor or the rotor pump or the rotor motor with a novel structure, so that the sealing effect is obviously improved, the rotor compressor is suitable for conveying pure gas and liquid, and the application range of the rotor compressor is widened.
Technical proposal
The technical scheme of the invention is realized as follows:
a labyrinth rotor of a labyrinth rotor compressor, characterized by: the outer cylindrical surface of the rotor is provided with a plurality of labyrinth grooves in the axis parallel direction, and the labyrinth grooves are completely or incompletely communicated and remain cylindrical surfaces at the end parts or are intermittent array labyrinth grooves.
The utility model provides a labyrinth rotor compressor, includes cylinder body, end cover, bent axle, rotor, gleitbretter, and the bent axle passes through the bearing on the end cover and sets up with the cylinder body is concentric, and the eccentric journal of bent axle sets up with the cylinder body is concentric with the cylinder face of rotor, is equipped with the inlet and outlet hole on cylinder body or the end cover, and cylinder body's inner cylinder face one side sets up the slide that can hold the gleitbretter, its characterized in that: the inner cylindrical surface of the cylinder body is internally tangent with the outer cylindrical surface of the labyrinth rotor, at least one of the outer cylindrical surface of the labyrinth rotor or the inner cylindrical surface of the cylinder body is provided with a plurality of labyrinth grooves along the axis parallel direction, and a crescent cavity formed by the outer cylindrical surface of the labyrinth rotor, the inner cylindrical surface of the cylinder body and the end cover is separated into at least two working cavities by a sliding vane to form the labyrinth rotor compressor.
Further, the labyrinth rotor is fixedly connected with the sliding sheets, cylindrical holes are formed in one side of the inner cylindrical surface of the cylinder body in parallel, two crescent sealing flaps are arranged in the cylindrical holes, one side surface of each sealing flap is a cylindrical surface, the other side surface is a plane, a slide way is formed in the middle of each crescent sealing flap, and the sliding sheets penetrate through the slide way to form the swing type labyrinth rotor compressor.
Further, the labyrinth rotor is provided with a cylindrical hinge hole and is hinged with the sliding vane, a slot is formed in one side of the inner cylindrical surface of the cylinder body, a slide way capable of accommodating the sliding vane is arranged on one side of the inner cylindrical surface of the cylinder body, and the sliding vane slides in the slide way to form the hinged sliding vane type labyrinth rotor compressor.
Further, one end of the sliding vane is an arc surface, the other end of the sliding vane is provided with a spring, the spring keeps contact sliding connection with one end of the arc surface of the sliding vane all the time, and when the labyrinth rotor rotates around the rotating shaft, the sliding vane slides in the sliding way to form the spring sliding vane type labyrinth rotor compressor.
Further, the eccentric shaft neck of the crankshaft is externally and slidably connected with the labyrinth rotor, the labyrinth rotor is a cylindrical ring with coaxial inner and outer cylindrical surfaces, the outer cylindrical surface of the labyrinth rotor and the outer cylindrical surface of the eccentric shaft neck are concentrically arranged, the outer cylindrical surface of the labyrinth rotor is internally tangent with the inner cylindrical surface of the cylinder body, one end of the sliding vane is provided with a hinge hole, the hinge hole is an open cylindrical surface, the hinge hole is internally hinged with the hinge pillar, the section of the hinge pillar is crescent, one side surface of the hinge pillar is provided with an inwards concave inner cylindrical surface, the inner cylindrical surface of the hinge pillar is matched with the outer cylindrical surface of the labyrinth rotor, the spring compresses the inner cylindrical surface of the hinge pillar on the outer cylindrical surface of the labyrinth rotor by virtue of elasticity, the sliding vane slides in a slide way when the labyrinth rotor rotates around the rotating shaft, and a crescent cavity formed by the outer cylindrical surface of the labyrinth rotor, the inner cylindrical surface of the cylinder body and the end cover is separated into at least two working cavities by the sliding vane and the hinge pillar, and the hinge pillar forms the hinge sliding vane type labyrinth rotor compressor.
Further, the labyrinth grooves are completely or incompletely penetrated along the axis parallel direction along the outer cylindrical surface of the labyrinth rotor or the inner cylindrical surface of the cylinder body, and the cylindrical surface is reserved at the end part.
Further, the cross-sectional shape of the labyrinth groove may be rectangular, trapezoidal, circular arc, zigzag, inverted hook or other semi-closed curve shape.
Further, the side walls of the two end planes of the rotor cylinder are provided with sealing grooves, and sealing strips or sealing rings are arranged in the sealing grooves.
Further, the cylinder body is provided with a cylinder sleeve in a split mode on the inner surface, the inner surface of the cylinder sleeve is a cylindrical surface, the inner cylindrical surface of the cylinder sleeve is inscribed with the outer cylindrical surface of the rotor, a labyrinth groove is arranged near the inner cylindrical surface of the cylinder sleeve along the axial parallel direction, and the inner cylindrical surface of the cylinder sleeve is coaxially arranged with the crankshaft.
Further, the rotor is fixedly connected with the sliding vane, an extension line of the sliding vane points to the axis of the rotor, and the rotor and the sliding vane are of an integrated structure, or of a split combined type fixed connection structure.
Advantageous effects
The beneficial effects of the invention are as follows:
1. the sealing performance is strong. The outer cylindrical surface of the rotor is provided with a plurality of axial labyrinth grooves of the mildly-hemp, or the inner cylindrical surface of the cylinder body is provided with a plurality of axial labyrinth grooves of the mildly-hemp, or at least one of the axial labyrinth grooves is provided with the axial labyrinth grooves, the outer cylindrical surface of the rotor and the inner cylindrical surface of the cylinder body are inscribed, the distance between the rotor and the outer cylindrical surface of the cylinder body is very small in the length of a section of arc surface at the tangent position, the labyrinth grooves are provided with a plurality of chambers, the gas pressure in the process of gradually leaking the gas of the compression chamber to the expansion chamber is greatly reduced after the gas passes through one labyrinth groove, the pressure is almost not generated after the gas reaches the outer labyrinth grooves, and the leakage quantity is greatly reduced. Even without the presence of lubricating oil, the gas leakage is small. The tail end of the sliding vane is changed from the line contact of the current convex arc shape and the outer cylindrical surface labyrinth rotor into the surface contact of the concave cylinder and the outer cylindrical surface, the sealing surface is larger, the sealing is tighter, and the gas leakage quantity can be greatly reduced. The labyrinth grooves are intermittent, so that gas pressure of the middle labyrinth groove can be prevented from leaking at two ends due to the fact that the gas pressure of the middle labyrinth groove is quickly communicated to two sides along the labyrinth grooves, and in addition, the sealing effect is not affected due to the fact that each labyrinth groove is intermittent and can be distributed on a curve or staggered in some positions.
2. The application range is wide. The rotor and the cylinder of the existing rotor compressor are smooth cylindrical surfaces, the tangent position of the rotor and the cylinder sleeve is in line contact, and a certain gap is required to be kept between the rotor and the cylinder sleeve due to the need of high-speed rotation, so that gas leakage cannot be avoided, the contact line position is changed at any time and is not easy to seal, lubricating oil is mixed in refrigerant gas to effectively reduce leakage, the rotor and the cylinder sleeve can only be applied to a refrigeration compressor at present, obvious leakage can occur when pure gas is compressed, and the rotor and the cylinder sleeve cannot be applied, and are not suitable for being used as compressors for conveying the pure gas. According to the invention, the labyrinth grooves are arranged on the outer cylindrical surface of the rotor or the inner cylindrical surface of the cylinder body, so that the leakage amount can be greatly reduced even if pure gas is compressed. Therefore, the rotor compressor can be used in a wider range, and can be used as an air compressor, a natural gas compressor and the like in addition to a refrigeration compressor, and can be used as a vacuum pump and a pneumatic motor in the reverse.
3. High pressure resistance. The rotor and the inner cylindrical surface of the cylinder body of the existing rotor type compressor are smooth cylindrical surfaces, and after the rotor type compressor reaches a certain pressure, the pressure difference between a compression cavity and an expansion cavity is large, and the rotor type compressor can generate serious leakage due to small gap sealing in a inscribed cylindrical surface line contact mode, so that serious pressure loss is caused, and very high pressure is difficult to reach. And the higher the pressure, the larger the energy consumption loss is, and the longer the pressure-up time is. The invention arranges the labyrinth groove on the outer cylindrical surface of the rotor or the inner cylindrical surface of the cylinder body, and the leakage amount can be greatly reduced even if the compressed pure gas reaches high pressure, thus the rotor compressor is suitable for being used as a high-pressure gas compressor or a high-pressure pump or a high-pressure pneumatic motor or a high-pressure hydraulic motor.
4. The volumetric efficiency is improved. According to the invention, the labyrinth grooves are arranged on the outer cylindrical surface of the rotor or the inner cylindrical surface of the cylinder body, so that the leakage quantity of the compressor can be greatly reduced, and the actual volumetric efficiency is improved.
5. Energy and electricity are saved. According to the invention, the labyrinth grooves are arranged on the outer cylindrical surface of the rotor or the inner cylindrical surface of the cylinder body, so that the leakage amount of the compressor or the pump or the motor is reduced, and the idle work is reduced, thereby saving energy and electricity.
Drawings
The invention will now be further described with reference to the accompanying drawings and examples:
fig. 1 is a schematic perspective view of a cylinder with labyrinth grooves according to the present invention.
Fig. 2 is a schematic perspective view of a rotor with labyrinth grooves and hinge holes according to the present invention.
Fig. 3 is a schematic perspective view of a rotor with labyrinth grooves and integrated sliding sheets according to the present invention.
Fig. 4 is a schematic perspective view of a rotor compressor with a labyrinth groove and hinged sliding vane according to the present invention.
Fig. 5 is a schematic diagram of the principle of the labyrinth groove and the partial enlarged structure of fig. 4.
Fig. 6 is a schematic perspective view of a swing rotor compressor with a labyrinth groove in a rotor according to the present invention.
Fig. 7 is a schematic perspective view of a spring sliding vane rotor compressor with labyrinth grooves in a cylinder block according to the present invention.
Fig. 8 is a schematic perspective view of a slider with hinge holes according to the present invention.
Fig. 9 is a schematic perspective view of the hinge post of the present invention.
Fig. 10 is a schematic perspective view of a labyrinth rotor with intermittent labyrinth grooves according to the present invention.
Fig. 11 is a schematic perspective view of a spring vane rotor compressor with a rotor having intermittent labyrinth grooves according to the present invention.
In the figure, the cylinder body, the 2-end cover, the 3-labyrinth groove, the 4-cylinder sleeve, the 5-hinge hole, the 6-rotor, the 7-sliding sheet, the 8-air inlet and outlet hole, the 9-crescent flap, the 10-crankshaft, the 11-slideway, the 12-eccentric journal, the 13-spring, the 14-fastener, the 15-balance weight, the 16-cylinder hole, the 17-sealing strip, the 18-sealing ring, the 19-hinge column, the 20-outer cylindrical surface and the 21-inner cylindrical surface are arranged.
Detailed Description
For the sake of clarity of the construction of the invention, the end cap 2 of the compressor front is removed or hidden from the internal structure. As shown in fig. 1, the cylinder 1 of the present invention has a cylindrical surface inside, and a labyrinth groove 3 is provided on the surface of the cylindrical surface, and the direction of the labyrinth groove 3 is arranged in the axis parallel direction. For the sake of clarity of the structure of the invention, the scale of the view of the labyrinth 3 is enlarged, the actual size is set according to the need, the size of the labyrinth 3 century is smaller than that of the figure, and only a thin line is actually visible but no specific structure is visible. In order to be convenient for connect gleitbretter 7, the fluting sets up slide 2 on the cylinder body 1, and slide 2 is the parallel opening in both sides, can sliding connection gleitbretter 7.
As shown in fig. 2, the rotor 6 of the present invention has a cylindrical ring with a cylindrical surface on the outside, and the labyrinth grooves 3 are provided on the surface of the cylindrical surface, and the direction of the labyrinth grooves 3 is parallel to the axis. In order to facilitate the connection of the sliding vane 7, the labyrinth rotor 6 is provided with a cylindrical hinge hole 5, and the sliding vane 7 can be hinged. Since the position close to the hinge hole 5 is close to the intake and exhaust ports, the labyrinth groove 3 may not be provided in this partial region.
As shown in fig. 3, the rotor 6 of the present invention has a cylindrical ring having a cylindrical surface on the outside, and the labyrinth grooves 3 are provided on the surface of the cylindrical surface. The rotor 6 is fixedly connected with a sliding vane 7. The rotor 6 and the sliding sheet 7 are integrally formed, or can be formed by split combination and fixed connection.
The labyrinth grooves 3 are arranged along the direction parallel to the axis and distributed near the cylindrical surface of the rotor 6 or the cylinder body 1, the cross section of the labyrinth grooves 3 can be rectangular, trapezoidal, circular arc, zigzag or inverted hook, or other semi-closed curve, and the shape of the labyrinth grooves is designed according to the requirements and the manufacturing process conditions.
Exemplary applications of the present invention will now be further described with reference to specific examples.
Embodiment one:
as shown in fig. 4, taking a hinged sliding vane type rotor refrigeration compressor as an example, the rotor compressor mainly comprises a cylinder body 1, a cylinder sleeve 4, end covers 2, a rotor 6, sliding vanes 7, a crankshaft 10 and a balance weight 15, wherein the end covers 2 on two sides of the cylinder body 1 are fixedly connected through bolt fasteners 14, the cylinder sleeve 4 is fixedly arranged in the cylinder body 1 in a split type, the cylinder sleeve 4 is made of wear-resistant materials, so that the service life is prolonged, and the inner cylindrical surface of the cylinder sleeve 4 is inscribed with the outer cylindrical surface of the rotor 6. The outer shape of the labyrinth rotor 6 is a cylindrical ring with a cylindrical surface on the outside, a plurality of labyrinth grooves 3 are arranged on the surface of the outer cylindrical surface, and the directions of the labyrinth grooves 3 are arranged along the axis parallel direction. A cylindrical hinge hole 5 is provided on the labyrinth rotor 6 to hinge-connect the sliding sheets 7. One end of the cylinder body 1 is provided with a slide way 11 in a groove, and the slide way 11 is connected with the sliding sheet 7 in a sliding way. One end of the sliding vane 7 is a convex cylindrical surface, the other side of the sliding vane 7 is a flat plate and can freely slide in the slide way 11, and the cylindrical surface of the sliding vane 7 is hinged in the cylindrical hinge hole 5 of the labyrinth rotor 6. The crescent cavity surrounded by the outer cylindrical surface of the labyrinth rotor 6, the inner cylindrical surface of the cylinder body 1 and the end cover 2 is divided into two working cavities by the sliding vane 7, and the hinged sliding vane type labyrinth rotor compressor is formed. The crankshaft 10 extending from one end of the cylinder body 1 is connected with a prime motor, the prime motor drives an eccentric journal 12 on the crankshaft 10 to rotate to drive a labyrinth rotor 6 which is in sliding connection with the eccentric journal to rotate, and in the rotating process of the labyrinth rotor 6, the volume of one working cavity is gradually increased to become an expansion cavity, and the volume of the other working cavity is gradually decreased to become a compression cavity, so that the working cavities are gradually changed to form a positive-displacement compressor, a pump and a motor.
The outer part of the labyrinth rotor 6 is a cylindrical surface, a plurality of labyrinth grooves 3 are arranged on the surface of the cylindrical surface, the directions of the labyrinth grooves 3 are arranged along the axis parallel direction, and the labyrinth grooves penetrate through the outer cylindrical surface of the labyrinth rotor 6. The interior of the cylinder body 1 is a smooth cylindrical surface, the inner cylindrical surface of the cylinder body 1 is inscribed with the outer cylindrical surface of the rotor 6, and a plurality of labyrinth cavities are jointly enclosed at the tangent position.
As shown in fig. 5, the outer cylindrical surface of the labyrinth rotor 6 is provided with a plurality of labyrinth grooves 3, the cross section of the labyrinth grooves 3 can be rectangular or trapezoidal, the two side surfaces can be planes or arc-shaped curved surfaces, the inner cylindrical surface of the cylinder body 1 near the tangent position is very close to the outer cylindrical surface of the labyrinth rotor 6, the gap is very small, a long and narrow cavity parallel to each other is formed between the concave labyrinth grooves 3 on the rotor and the smooth inner cylindrical surface of the cylinder body 1, a labyrinth sealing structure is formed, the pressure of gas is greatly reduced every time the gas passes through one labyrinth groove in the process of gradually leaking high-pressure gas of the compression cavity to the expansion cavity, the power of gas transmission is from pressure difference, almost no pressure difference exists when the gas passes through a plurality of labyrinth grooves and reaches the outer labyrinth groove, and the leakage quantity is greatly reduced.
Embodiment two:
as shown in fig. 6, taking a swing rotor refrigeration compressor as an example, when the cylinder body 1 is made of wear-resistant materials, a cylinder sleeve 4 does not need to be arranged, the rotor compressor mainly comprises the cylinder body 1, an end cover 2, a rotor 6, a sliding sheet 7, a crankshaft 10 and a balance block 15 which are fixedly connected together, wherein the end covers 2 on two sides of the cylinder body 1 are fixedly connected through bolt fasteners 14, the crankshaft 10 extending out of one end of the cylinder body 1 is connected with a prime motor, the prime motor drives an eccentric shaft neck 12 on the crankshaft 10 to rotate so as to drive the rotor 6 which is in sliding connection with the eccentric shaft neck to rotate, and the inner cylindrical surface of the cylinder body 1 is inscribed with the outer cylindrical surface of the rotor 6. The outer shape of the labyrinth rotor 6 is a cylindrical ring with a cylindrical surface on the outside, a plurality of labyrinth grooves 3 are arranged on the surface of the cylindrical surface, and the directions of the labyrinth grooves 3 are arranged along the axis parallel direction. The sliding vane 7 is fixedly connected to the labyrinth rotor 6, an extension line of the sliding vane 7 points to the axis of the labyrinth rotor 6, and the labyrinth rotor 6 and the sliding vane 7 are of an integrated structure in the figure, so that the connecting strength is high. One end of the cylinder body 1 is provided with a cylindrical hole 16 in a slotting way, the cylindrical hole 16 is an open cylindrical hole, one side of the cylindrical hole is open and communicated with the inner cylindrical surface of the cylinder body 1, two crescent flaps 9 are hinged in the cylindrical hole 16, one side surface of each crescent flap 9 is a cylindrical surface, the other side surface of each crescent flap 9 is a plane, a slide way 11 is formed between the two crescent flaps 9, a slide sheet 7 is connected in a sliding way 11, the slide sheet 7 is a flat plate with the same interval as the slide way 11, and the slide sheet can freely slide in the slide way 11. The rotor 6 and the sliding sheets 7 are plane in side surfaces, so that the sealing is easy, and the sealing can be realized by arranging a sealing strip 17 and a sealing ring 18 in a sealing groove.
The outer slotting of the cylindrical hole 16 of the cylinder body 1 is provided with a cavity which can avoid the sliding sheet 7 extending out of the crescent flap 9. The crescent cavity surrounded by the outer cylindrical surface of the labyrinth rotor 6, the inner cylindrical surface of the cylinder body 1, the end cover 2 and the crescent valve 9 is divided into two working cavities by the sliding vane 7 to form the swing type labyrinth rotor compressor, the pump and the motor.
Embodiment III:
as shown in fig. 7, taking a spring sliding vane type rotor refrigeration compressor as an example, the rotor compressor mainly comprises a cylinder body 1, an end cover 2, a rotor 6, a sliding vane 7, a crankshaft 10, a spring 13, a fastener 14 and a balance weight 15, wherein the end covers 2 at two sides are fixed on two sides of the cylinder body 1 by a positioning pin and are fixedly connected by a bolt fastener 14. The rotor 6 is a cylinder ring with a smooth outer surface, one end of the cylinder body is provided with a slide way 11 in a grooved way, the slide way 11 is connected with the slide sheet 7 in a sliding way, the slide sheet 7 can freely slide in the slide way 11, one end of the slide sheet 7 is connected with a spring 13, the other end of the slide sheet 7 is an arc cylindrical surface, and the arc end of the slide sheet 7 is always pressed on the outer cylindrical surface of the rotor 6 by pushing the slide sheet 7 by means of the elastic force of the spring 13. The crescent cavity surrounded by the outer cylindrical surface of the rotor 6, the inner cylindrical surface of the cylinder body 1 and the end cover 2 is divided into two working cavities by the sliding vane 7, so that the spring sliding vane type labyrinth rotor compressor is formed.
The inside of the cylinder body 1 is a cylindrical surface, a plurality of labyrinth grooves 3 are arranged on the surface of the inner cylindrical surface, and the directions of the labyrinth grooves 3 are arranged along the axis parallel direction. The inner cylindrical surface of the cylinder body 1 is inscribed with the outer cylindrical surface of the rotor 6, the inner cylindrical surface of the cylinder body 1 and the outer cylindrical surface of the rotor 6 are close to each other near the tangent position, the gap is very small, so that a plurality of parallel long and narrow cavities are formed between the concave labyrinth grooves 3 on the cylinder body 1 and the smooth outer cylindrical surfaces of the rotor 6 to form a labyrinth sealing structure, the gas pressure is greatly reduced every time the gas pressure passes through one labyrinth groove in the process of gradually leaking the high-pressure gas of the compression cavity to the expansion cavity, the pressure is almost not increased to the outer labyrinth grooves, and the leakage quantity is greatly reduced. The tightness between the rotor 6 and the cylindrical surface of the cylinder 1 is enhanced.
Embodiment four:
as shown in fig. 8, the sliding vane 7 of the present invention is provided with a hinge hole 5 near one end of the circular rotor 6, the axis of the hinge hole 5 is parallel to the large plane of the sliding vane 7, and the hinge hole 5 is perpendicular to the narrow planes at both sides. The cross section of the hinge hole 5 is a major arc or a minor arc, and the cross section of the hinge hole 5 is preferably a major arc. A plurality of discontinuous labyrinth grooves 3 are arranged on the side surfaces of the rotor 6 and the sliding sheets 7 for sealing.
As shown in fig. 9, the shape of the hinge post 19 is crescent, the section of the crescent is a major arc or a minor arc, the section of the hinge post 19 is preferably a major arc, and the hinge post 19 is embedded into the hinge hole 5 and is not easy to automatically deviate. An inner cylindrical surface 21 which is concave inwards is arranged on one side surface of the outer cylindrical surface of the annular rotor 6, the axis of the inner cylindrical surface 21 is parallel to the axis of the outer cylindrical surface 20 of the hinge post 19, and two side surfaces of two sides of the hinge post 19 which are perpendicular to the axis are planes. The length of the hinge post 19 is equal or slightly different from the width of the slide 7.
As shown in fig. 10, the outer shape of the labyrinth rotor 6 is a cylindrical ring with concentric inner and outer surfaces, a plurality of through labyrinth grooves 3 are arranged in parallel on the surface of the outer cylindrical surface at intervals, the directions of the labyrinth grooves 3 are arranged along the axis parallel direction, each labyrinth groove 3 is discontinuous but not continuous and is arranged in an array, the labyrinth grooves are distributed on each straight line at equal intervals, the labyrinth grooves 3 are distributed on the surface of the outer cylindrical surface at equal angles in the circumferential direction. The two side planes of the labyrinth rotor 6 are also provided with a plurality of layers of concentric ring labyrinth grooves, the concentric ring labyrinth grooves can be continuous, and the concentric ring labyrinth grooves can also be discontinuous labyrinth grooves which are arranged in an array manner along the circumferential direction.
As shown in fig. 11, the labyrinth rotor compressor mainly comprises a cylinder body 1, end covers 2, a rotor 6, sliding sheets 7, a crankshaft 10, springs 13, positioning pins and a balance weight 15, wherein the end covers 2 on two sides are kept to be positioned and fixed on two sides of the cylinder body 1 by the positioning pins and the cylinder body 1, so that bearing holes of the end covers 2 are arranged concentrically with an inner cylindrical surface 16 of the cylinder body 1, and are fixedly connected by a bolt fastener 14. The labyrinth rotor 6 is slidably disposed on an eccentric journal 12 of the crankshaft 10. The labyrinth rotor 6 is a cylindrical ring, and the inner cylindrical surface and the outer cylindrical surface of the cylindrical ring are concentrically arranged.
The crankshaft 10 is eccentrically provided with an eccentric journal 12, the axis of the outer cylindrical surface of the eccentric journal 12 is parallel to the rotation axis of the crankshaft 10, and the outer cylindrical surface of the eccentric journal 12 is provided with an oil conveying groove and an oil conveying hole. The eccentric journal 12 is arranged concentrically with the outer cylindrical surface of the labyrinth rotor 6, and the eccentric journal 12 of the crankshaft 10 is in sliding fit with the inner cylindrical surface of the labyrinth rotor 6. The outer cylindrical surface of the labyrinth rotor 6 is internally tangent with the inner cylindrical surface 16 of the cylinder body 1, the cylinder body 1 or the end cover 2 is provided with an air inlet and exhaust hole 8, one end of the cylinder body 1 is provided with a slot, a slide way 11 is arranged at one end of the cylinder body, the slide way 11 is in sliding connection with the slide sheet 7, the slide sheet 7 can freely slide in the slide way 11, one end of the slide sheet 7, which is close to the outer cylindrical surface of the annular labyrinth rotor 6, is provided with a hinge hole 5, the axis of the hinge hole 5 is parallel to the large plane of the slide sheet, and the hinge hole 5 is perpendicular to the narrow planes at two sides. The inside of the cylindrical hinge hole 5 of the sliding sheet 7 is hinged with the hinge post 19, and the hinge post 19 can flexibly rotate in the hinge hole 5 of the sliding sheet 7. The shape of the hinge column 19 is crescent, wherein an inner cylindrical surface 21 is arranged on one side surface of the outer cylindrical surface of the circular ring-shaped labyrinth rotor 6, the diameter of the inner cylindrical surface 21 of the hinge column 19 is equal to that of the outer cylindrical surface of the labyrinth rotor 6, and the planes at the two ends of the hinge column 19 are perpendicular to the axis of the outer cylindrical surface 6.
One end of the sliding vane 7 is connected with the spring 13, the sliding vane 7 is pushed by means of the elasticity of the spring 13, the inner cylindrical surface 21 of the hinged column 19 hinged with the sliding vane 7 is always pressed on the outer cylindrical surface of the labyrinth rotor 6, the inner cylindrical surface 21 of the hinged column 19 is matched with the outer cylindrical surface of the labyrinth rotor 6 to form a large-area surface seal, a plurality of parallel labyrinth grooves 3 are arranged on the surface of the outer cylindrical surface of the labyrinth rotor 6, the inner cylindrical surface 21 of the hinged column 19 is contacted with the outer cylindrical surface of the rotor 6, gaps hardly exist, a plurality of parallel long and narrow cavities are formed between the labyrinth grooves 3 and the inner cylindrical surface 21 to form a labyrinth seal structure, and the pressure of gas is reduced when the high-pressure gas of the compression cavity gradually leaks to the expansion cavity, the pressure of the gas is reduced when the gas passes through the labyrinth grooves, the pressure is not reduced until the outer labyrinth grooves are almost not pressed, the leakage quantity is almost not existed, and the tightness between the sliding vane 7 and the outer cylindrical surface of the labyrinth rotor 6 is enhanced.
The crescent cavity enclosed by the outer cylindrical surface of the labyrinth rotor 6 and the inner cylindrical surface 16 of the cylinder body 1 and the end cover 2 is divided into two working cavities by the sliding vane 7 and the hinge post 19. The spring sliding vane type labyrinth rotor compressor is formed.
The outer cylindrical surface of the rotor 6 and the inner cylindrical surface of the cylinder body 1 can form a labyrinth sealing structure only if one of the outer cylindrical surface and the inner cylindrical surface is provided with a labyrinth groove, and the other is a smooth cylindrical surface. For ease of manufacture, it is preferable to machine a labyrinth groove in the outer cylindrical surface of the rotor 6. Since the labyrinth seal is not required to be maintained on the outer cylindrical surface of the rotor passing through the region of the intake and exhaust holes 8, it is unnecessary to machine a labyrinth groove near the intake and exhaust hole region.
The length of the labyrinth groove 3 does not have to be entirely through the outer cylindrical surface of the rotor 6, for example, the labyrinth groove does not have to be machined near both ends of the rotor 6, so that the gas entering the labyrinth groove does not leak out to both end surfaces. The middle labyrinth groove can be prevented from being damaged under the blocking of the cylindrical surfaces with the smooth two ends.
The two crescent petals 9 can also be connected into an integral form to form a cylindrical swing cylinder, a slide way 11 with the same width as the slide sheet 7 is arranged in a groove in the swing cylinder, the slide sheet 7 can be contained in the slide way 11, and the function of the two crescent petals 9 formed by dividing the swing cylinder when the swing cylinder is penetrated by the slide way 11 is the same.
The shape of the discontinuous labyrinth grooves is not necessarily a straight line, and can be a curve, or can be diamond, parallelogram, ellipse, round dot, triangle and other shapes.
The cylinder body 1 or the end cover 2 is provided with an air inlet and outlet hole 8 which is respectively communicated with a working cavity enclosed by the cylinder body 1, the rotor 6, the sliding vane 7 and the end cover 2. The air inlet and outlet holes 8 can be internally provided with a one-way valve according to the requirement.
The crankshaft 10 is provided with the balance weight 15, so that a rotary assembly formed by combining the rotor 6 and the crankshaft 10 achieves dynamic balance, and vibration and noise are reduced.
The side of the end cap 2 may be provided with wear plates of wear resistant material to improve wear resistance for extended service life.
The embodiment has high structural strength and good sealing performance, can be used as an air compressor and a compressor for conveying other gases, and the bottom of the compressor can be provided with a support as required for supporting, and the structural form of the support is determined according to the working environment conditions. In addition, peripheral auxiliary equipment such as an air storage tank and other pipelines are required to be arranged, and the conventional structures are not repeated.
Industrial applicability: when the working medium is air, the invention is used as an air compressor and a blower. When the conveying medium is natural gas, the invention is used as a natural gas compressor. When the working medium is changed from gas into liquid such as water or oil, the invention becomes a water pump or an oil delivery pump, and is used in industry and chemical industry. When high pressure gas or liquid is used as the driving working medium, the invention can be used as a pneumatic motor or a hydraulic motor and an engine. When the working medium is a refrigerant, the invention becomes a refrigeration compressor, such as a refrigerator compressor, a freezer compressor, an air conditioner compressor, and an automobile air conditioner compressor. When used as a compressor, a check valve is provided in the exhaust hole 8 to prevent the backflow of high-pressure gas or liquid.
The invention can also be used as a vacuum pump and a vacuum unit for scientific research, medical treatment, papermaking, textile, food, traffic and other industries. As a vacuum pump, a pneumatic motor or a hydraulic motor, a one-way valve is arranged in the air inlet hole to prevent the gas or liquid from flowing backwards.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.

Claims (10)

1. A labyrinth rotor of a labyrinth rotor compressor, characterized by: the outer cylindrical surface of the rotor (6) is provided with a plurality of labyrinth grooves (3) along the axis parallel direction, and the labyrinth grooves (3) are completely or incompletely communicated and remain cylindrical surfaces at the end parts or are intermittent array labyrinth grooves.
2. The utility model provides a labyrinth rotor compressor, including cylinder body (1), end cover (2), bent axle (10), rotor (6), gleitbretter (7), bearing on bent axle (10) through end cover (2) sets up with the cylinder is concentric in cylinder body (1), eccentric journal (12) of bent axle (10) set up with the cylinder is concentric in rotor (6), be equipped with on cylinder body (1) or end cover (2) inlet and outlet hole (8), cylinder body (1) interior cylinder one side sets up slide (11) that can hold gleitbretter (7), its characterized in that: the inner cylindrical surface of the cylinder body (1) is internally tangent with the outer cylindrical surface of the labyrinth rotor (6), at least one of the outer cylindrical surface of the labyrinth rotor (6) or the inner cylindrical surface of the cylinder body (1) is provided with a plurality of labyrinth grooves (3) along the axis parallel direction, and a crescent cavity formed by the outer cylindrical surface of the labyrinth rotor (6), the inner cylindrical surface of the cylinder body (1) and the end cover (2) is separated into at least two working cavities by a sliding vane (7), so that the labyrinth rotor compressor is formed.
3. The labyrinth rotor compressor as recited in claim 2, wherein: the labyrinth rotor (6) is fixedly connected with the sliding vane (7), a cylindrical hole (16) is formed in one side of the inner cylindrical surface of the cylinder body (1) in parallel, two crescent sealing flaps (9) are arranged in the cylindrical hole (16), one side surface of each sealing flap (9) is a cylindrical surface, the other side surface of each sealing flap is a plane, a slide way (11) is formed in the middle of each crescent sealing flap (9), and the sliding vane (7) penetrates through the slide way (11) to form the swing type labyrinth rotor compressor.
4. The labyrinth rotor compressor as recited in claim 2, wherein: the labyrinth rotor (6) is provided with a cylindrical hinge hole (5) which is hinged with the sliding vane (7), a groove is formed in one side of the inner cylindrical surface (of the cylinder body (1) and is provided with a slide way (11) which can accommodate the sliding vane (7), and the sliding vane (7) slides in the slide way (11) to form the hinged sliding vane type labyrinth rotor compressor.
5. The labyrinth rotor compressor as recited in claim 2, wherein: one end of the sliding vane (7) is an arc surface, the other end of the sliding vane (7) is provided with a spring (13), the spring (13) keeps the labyrinth rotor (6) and one end of the arc surface of the sliding vane (7) in contact sliding connection all the time, and when the labyrinth rotor (6) rotates around a rotating shaft, the sliding vane (7) slides in the sliding rail (11) to form the spring sliding vane type labyrinth rotor compressor.
6. The labyrinth rotor compressor as recited in claim 2, wherein: the eccentric journal (12) of the crankshaft (10) is externally connected with the labyrinth rotor (6) in a sliding manner, the labyrinth rotor (6) is a cylindrical ring with coaxial inner and outer cylindrical surfaces, the outer cylindrical surface of the labyrinth rotor (6) and the outer cylindrical surface of the eccentric journal (12) are concentrically arranged, the outer cylindrical surface of the labyrinth rotor (6) is internally tangent to the inner cylindrical surface of the cylinder body (12), one end of the sliding vane (1) is provided with the hinge hole (5), the hinge hole (5) is internally connected with the hinge pillar (3), the section of the hinge pillar (3) is in a crescent shape, one side surface of the hinge pillar (3) is provided with the inner cylindrical surface (5) which is concave inwards, the inner cylindrical surface (5) of the hinge pillar (3) is matched with the outer cylindrical surface of the labyrinth rotor (6), the spring (13) tightly presses the inner cylindrical surface (5) of the hinge pillar (3) on the outer cylindrical surface of the labyrinth rotor (6) by virtue of elasticity, when the labyrinth rotor (6) rotates around the rotating shaft, the sliding vane (7) slides in the sliding rail (11), the outer cylindrical surface of the labyrinth rotor (6) and the inner cylindrical surface of the cylinder (12) and an end cover (15) are connected with each other in a crescent shape, and at least two working slide vane cavities (1) are formed by the hinge pillar (3), and the two working slide vane compressor cavities are formed.
7. The labyrinth rotor compressor as recited in claims 1 to 6, characterized by: the labyrinth grooves (3) are completely or incompletely communicated along the axis parallel direction along the outer cylindrical surface of the labyrinth rotor (6) or the inner cylindrical surface of the cylinder body (1), and the end parts of the labyrinth grooves are reserved with cylindrical surfaces or intermittent array labyrinth grooves.
8. The labyrinth rotor compressor as recited in claims 1 to 6, characterized by: the cross section of the labyrinth groove (3) can be rectangular, trapezoidal, circular arc-shaped, zigzag-shaped, inverted beard hook or other semi-closed curve shape.
9. The labyrinth rotor compressor as recited in claims 1 to 6, characterized by: the side walls of the two end planes of the cylinder of the rotor (6) are provided with sealing grooves, and sealing strips (17) or sealing rings (18) are arranged in the sealing grooves.
10. The labyrinth rotor compressor as recited in claims 1 to 6, characterized by: the cylinder body (1) is provided with a cylinder sleeve (4) on the inner surface in a split mode, the inner surface of the cylinder sleeve (4) is a cylindrical surface, the inner cylindrical surface of the cylinder sleeve (4) is inscribed with the outer cylindrical surface of the rotor (6), a labyrinth groove (3) is arranged near the inner cylindrical surface of the cylinder sleeve (4) along the axial parallel direction, and the inner cylindrical surface of the cylinder sleeve (4) and the crankshaft (10) are coaxially arranged.
CN202211656511.XA 2022-06-22 2022-12-22 Labyrinth rotor compressor Pending CN117072439A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202210712151 2022-06-22
CN2022107121514 2022-06-22
CN2022108878841 2022-07-27
CN202210887884.1A CN115143112A (en) 2022-07-27 2022-07-27 Rotor compressor with hinged column sliding vane and pump

Publications (1)

Publication Number Publication Date
CN117072439A true CN117072439A (en) 2023-11-17

Family

ID=88710256

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211656511.XA Pending CN117072439A (en) 2022-06-22 2022-12-22 Labyrinth rotor compressor

Country Status (1)

Country Link
CN (1) CN117072439A (en)

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