CN116658395A - Double-cylinder opposite moving-magnet type reciprocating linear compressor - Google Patents

Double-cylinder opposite moving-magnet type reciprocating linear compressor Download PDF

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Publication number
CN116658395A
CN116658395A CN202310188431.4A CN202310188431A CN116658395A CN 116658395 A CN116658395 A CN 116658395A CN 202310188431 A CN202310188431 A CN 202310188431A CN 116658395 A CN116658395 A CN 116658395A
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CN
China
Prior art keywords
piston
cylinder
coil
face
frame
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
CN202310188431.4A
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Chinese (zh)
Inventor
刘辉
房涛
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Liaoning Technical University
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Liaoning Technical University
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Priority to CN202310188431.4A priority Critical patent/CN116658395A/en
Publication of CN116658395A publication Critical patent/CN116658395A/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
    • 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
    • F04B35/045—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 using solenoids
    • 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
    • F04B27/005—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders with two cylinders
    • 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
    • F04B27/02—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders arranged oppositely relative to main shaft
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0083—Pulsation and noise damping means using blow off silencers
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

The invention provides a novel double-cylinder opposite moving-magnet type reciprocating linear compressor, wherein the whole structure adopts opposite type to counteract mechanical vibration of a left part and a right part; the left part and the right part are composed of a cylinder, a piston, a compression spring, a correction spring, a supporting structure and a shell respectively except for a public stand, a coil frame assembly, a piston connecting frame and a magnetic ring embedded in a groove of the piston connecting frame; the tail part of the piston is elastically supported on the inner wall of the sealing shell through the correction spring and the spring middle supporting frame, and the head part of the piston is elastically supported on the inner wall of the sealing shell through the compression spring; the coil is wound in the coil frame assembly, and the magnetic ring on the piston connecting frame makes reciprocating linear motion in an alternating magnetic field generated in the coil frame assembly, so that the piston compresses gas to do work. The invention realizes the opposite type of pistons to counteract the mechanical vibration of the left part and the right part through the connection of the piston connecting frames; the compression process of the compressor is to work through the suction channel and enter the interior of the compressor. The linear motor drives the piston to reciprocate, and the working medium enters the compressor through the air inlet channel. The piston is driven by the linear motor to reciprocate, working medium enters the compression cavity through the air inlet silencer and the air inlet valve plate, and after the pressure is increased, the air outlet valve plate is opened and is discharged through the air outlet silencer and the air outlet hole. The compressor has the advantages of compact structure, stable connection, high operation efficiency and long service life, and has good popularization and application values.

Description

Double-cylinder opposite moving-magnet type reciprocating linear compressor
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a double-cylinder opposite moving-magnet type reciprocating linear compressor.
Background
With the improvement of the world technology level and the rapid development of economy, the refrigerating device is applied to the front of various advanced technologies and has huge market potential. The compressor is the core of the refrigeration system and is also a mechanical device that compresses and increases the pressure of air, refrigerant, or other various working gases. Compressors are used in industrial equipment such as refrigerators and air conditioners.
The compressor is a power source of a refrigeration system, and is broadly divided into a reciprocating compressor in which a compression space for sucking or discharging working gas is formed between a piston and a cylinder, and the piston is linearly reciprocated inside the cylinder to compress a refrigerant.
The existing compressor is complex in structure and unstable in operation, and is high in cost and cannot meet the durable use requirement.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide the double-cylinder opposite moving-magnet type reciprocating linear compressor which is reasonable in structure and stable in operation, and meanwhile, the cost of the compressor is reduced, and the service requirement of durability is met.
In order to achieve the above purpose, the invention provides a double-cylinder opposite moving-magnet type reciprocating linear compressor, which comprises a sealed shell, a rotor assembly and a coil frame assembly, wherein the rotor assembly and the coil frame assembly are positioned in the sealed shell.
The rotor assembly comprises a piston, a piston connecting frame and a magnetic ring, wherein the piston is positioned on the central axis of the sealing shell, the magnetic ring is embedded in a groove of the piston connecting frame, the right end of the left piston is elastically supported on the left wall surface of the left coil frame fixing frame through a left correction spring and the left coil frame fixing frame, and the left end of the left piston is elastically supported on the inner wall of the left casing through a left compression spring.
The coil frame assembly is fixed on the periphery of the piston through the cylinder fixing frame, a coil is wound in the coil frame assembly, and a magnetic ring on the piston makes reciprocating linear motion in an alternating magnetic field generated in the coil frame assembly, so that the piston compresses gas to do work, and the low-temperature low-pressure refrigerant gas is compressed into high-temperature high-pressure refrigerant gas.
Further, the coil frame assembly comprises four quarter arc line coil frames, a coil positioned in the middle of the arc line coil frames and a coil frame locking ring for fixing the arc line coil frames together;
the upper part of each circular arc line bag frame is provided with symmetrical rectangular flanges, the lower part of each circular arc line bag frame is provided with symmetrical rectangular grooves, and the side surface of each circular arc line bag frame is provided with an arc-shaped groove for placing the locking ring of the coil frame.
The middle of each circular arc line wrapping frame is provided with an oval handle rod used for winding the coil.
Optionally, be equipped with the muffler that admits air in the left side cavity of piston, the right side cavity of piston and cylinder transition cooperation, be equipped with the exhaust silencer in the cylinder.
Further, an annular groove for placing a magnetic ring is formed in the outer surface of the piston, four threaded holes in threaded connection with the air inlet silencer baffle are formed in the left end face of the piston, and an annular flange for supporting the rear compression spring is arranged on the rightmost side of the piston.
The inside of the piston is provided with a baffle plate which divides the inside of the piston into a left cavity and a right cavity, eight air inlets are uniformly distributed on the baffle plate, and the air inlets are blocked by an air inlet valve plate under normal air pressure.
The center of the baffle has a piston shaft extending inside the left cavity.
Preferably, the intake silencer is composed of a left side part and a right side part.
The left end face of the left part is provided with three crescent grooves and a shaft hole matched with the piston shaft rod, the center position and two ends of the right end face of the left part are provided with first step grooves, and the inside of the left part is provided with a circular cavity and an internal baffle.
The inside of right side part has annular cavity, left side baffle and right side baffle, have three crescent recess and carry out complex shaft hole with the piston axostylus axostyle on the right side baffle, the central point of right side part right-hand member face puts and both ends open have with the first ladder groove of left side part carries out complex second ladder groove.
Preferably, the exhaust silencer is composed of a left part, a middle part and a right part.
The left side of left side part is the ring-shaped terminal surface, and its right-hand member face is opened there is the ladder groove, and its inside middle baffle is opened there are 4 symmetrically distributed's through-hole.
The left end face of the middle part is provided with a stepped groove, the middle baffle plate inside the stepped groove is provided with 4 symmetrically distributed through holes, and the right end face of the middle part is provided with 4 symmetrically distributed threaded holes.
The right part is formed by transitional connection of a left cylinder and a right cylinder through a round table-shaped cylinder, and partial external threads are formed outside the left cylinder and are used for being in threaded connection with a threaded hole in the center of the right end face of the middle part.
Further, the cylinder is cylindrical and is internally provided with a cylinder inner cavity, four symmetrically distributed through holes are formed in the left side end face of the cylinder, a circular groove is formed in the left side face of the cylinder inner cavity, a threaded hole for fixing an exhaust valve plate is formed in the center of the circular groove, and the cylinder inner cavity and the exhaust silencer are in transition fit.
The right end face of the air cylinder is flush with the right end face of the middle part, 4 symmetrically distributed threaded holes are formed in the right end face of the air cylinder, and the air cylinder is fixed with the air cylinder fixing frame through threaded connection of slotted cylindrical head screws and the threaded holes.
Preferably, the left end threaded connection of piston axostylus axostyle has spring coupling axostylus axostyle, and the mid portion of spring coupling axostylus axostyle is the polished rod, the left side external screw thread and the spring lock nut threaded connection of spring coupling axostylus axostyle, its right side external screw thread and the internal thread threaded connection of piston axostylus axostyle.
And a correction spring for adjusting the position of the piston is arranged between the spring lock nut and the left end of the piston shaft lever.
Optionally, the spring intermediate support frame is the shape of protruding in the upper and lower level, and its two ears share four symmetrically distributed's screw hole about, spring intermediate support frame and seal housing's left side casing realize fixedly through using hexagon socket head cap screw and screw hole threaded connection.
The end face of the boss of the spring middle support frame is provided with an annular boss corresponding to the annular boss of the air inlet silencer baffle, and the front compression spring is supported between the annular boss and the annular boss.
The center position of the boss end face is provided with a shaft hole matched with the spring connecting shaft rod, and the left side boss and the right side boss used for fixing the correction spring are formed on the left end face and the right end face of the shaft hole.
Further, the cylinder fixing frame is in a cylindrical shape, and the inside of the cylinder fixing frame is divided into a left cavity and a right cavity by using a middle baffle plate.
The left end face of the cylinder fixing frame is fixed at the right end of the coil frame assembly, and the right end face of the cylinder fixing frame is attached to the right side shell of the sealing shell.
The middle baffle is provided with 8 symmetrically distributed threaded through holes, 4 threaded through holes are aligned with threaded holes on the right end face of the air cylinder, the air cylinder and the air cylinder fixing frame are fixedly connected through threaded connection of slotted cylindrical head screws and the threaded through holes, and the other 4 threaded through holes are aligned with threaded holes on the right end face of the middle part, and the exhaust silencer and the air cylinder fixing frame are fixedly connected through threaded connection of slotted cylindrical head screws and the threaded through holes.
The left side of middle baffle is equipped with the ring shape boss, back hold-down spring supports the annular flange of piston right-hand member face with between the ring shape boss, middle baffle's central point put open have with right side part clearance fit's through-hole.
By the above, the novel moving-magnet type reciprocating linear compressor adopts a moving-magnet type structure, optimizes the structure of the prior compressor, has reasonable structure, reduces the size and the cost, reduces the air gap between the piston and the cylinder, increases the specific thrust, and ensures that the compressor has the use requirements of energy conservation, high efficiency and durability. The magnetic ring is embedded into the piston, so that the internal size is reduced, the air gap is reduced, the specific thrust of the compressor is increased, and meanwhile, the compression springs are arranged on the two sides of the piston, so that the resonant frequency of the compressor is achieved, and the working efficiency of the compressor can be greatly improved. The invention optimizes the structure of a plurality of parts, realizes the effects of compact structure, stable connection, high efficiency in operation and long service life of the compressor, and has remarkable progress and good popularization and application value for the prior art.
Drawings
Fig. 1 is a schematic sectional structure of a compressor according to the present invention.
Fig. 2 is a perspective view of a quarter section of the coil holder of the present invention.
Fig. 3 is a perspective view showing the overall structure of the coil holder of the present invention.
Fig. 4 is a perspective view showing the overall structure of the piston according to the present invention in a state.
Fig. 5 is a perspective view showing another state of the overall structure of the piston of the present invention.
Fig. 6 is a cross-sectional view of the overall structure of the piston of the present invention.
Fig. 7 is a perspective view showing the structure of the primary intake silencer of the present invention in a state.
Fig. 8 is a perspective view of a structure of the primary intake silencer of the present invention in another state.
Fig. 9 is a schematic view of the structure of the primary intake silencer of the present invention.
Fig. 10 is a perspective view showing a structure of the secondary intake silencer according to the present invention.
Fig. 11 is a perspective view of a structure of the secondary intake silencer according to the present invention in another state.
Fig. 12 is a schematic structural view of the secondary intake silencer of the present invention.
Fig. 13 is a perspective view showing the general structure of the intake silencer of the present invention.
Fig. 14 is a structural perspective view of the baffle plate of the intake silencer of the present invention.
Fig. 15 is a perspective view showing the structure of the cylinder according to the present invention in a state.
Fig. 16 is a structural perspective view of the cylinder of the present invention in another state.
Fig. 17 is a perspective view showing the structure of the primary exhaust muffler of the present invention in a state.
Fig. 18 is a perspective view of the structure of the primary exhaust muffler of the present invention in another state.
Fig. 19 is a schematic view of the structure of the primary exhaust muffler of the present invention.
Fig. 20 is a perspective view showing the structure of the secondary exhaust muffler according to the present invention in a state.
Fig. 21 is a perspective view of a structure of the secondary exhaust silencing of the present invention in another state.
Fig. 22 is a schematic view of the structure of the secondary exhaust silencing of the present invention.
Fig. 23 is a structural perspective view of three-stage exhaust silencing of the present invention.
Fig. 24 is a perspective view of the general structure of the exhaust muffler of the present invention.
Fig. 25 is a schematic view showing the general structure of the exhaust silencing of the present invention.
Fig. 26 is a structural perspective view of an intake valve sheet of the present invention.
Fig. 27 is a structural perspective view of an exhaust valve sheet of the present invention.
Fig. 28 is a structural perspective view of the intermediate housing of the present invention.
Fig. 29 is a schematic structural view of the intermediate housing of the present invention.
Fig. 30 is a structural perspective view of the two-end housing of the present invention.
Fig. 31 is a schematic structural view of the two-end housing of the present invention.
Fig. 32 is a perspective view of the overall structure of the seal housing of the present invention.
Fig. 33 is a schematic view of the overall structure of the seal housing of the present invention.
Fig. 34 is a structural perspective view of the magnetic ring of the present invention.
Fig. 35 is a structural perspective view of the piston connecting frame of the present invention.
Fig. 36 is a structural perspective view of the fixing frame of the present invention.
Fig. 37 is a schematic structural view of the fixing frame of the present invention.
Fig. 38 is a perspective view showing an internal structure of the compressor of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, modifications, equivalents, improvements, etc., which are apparent to those skilled in the art without the benefit of this disclosure, are intended to be included within the scope of this invention.
It should be noted that all directional indications (such as outer, inner, left, right … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed. Where "left" corresponds to the left side in fig. 1 and "right" corresponds to the right side in fig. 1.
Referring to fig. 1 to 38, a double-cylinder opposite moving-magnet type reciprocating linear compressor of the present invention is described in detail, and the double-cylinder opposite moving-magnet type reciprocating linear compressor of the present invention adopts a moving-magnet type scheme to implement reciprocating linear work in the compressor, and is often applied to refrigeration equipment such as air conditioners, refrigerators, etc.
The double-cylinder opposite moving-magnet type reciprocating linear compressor is internally provided with a part for compressing refrigerant, the sealed shells 1,2 and 2 'are sealed containers, and the inside of the sealed shells 1,2 and 2' is filled with low-pressure refrigerant. The invention relates to a double-cylinder opposite moving-magnet type reciprocating linear compressor which comprises a rotor component, coil frame assemblies 3,4 and 5, a coil frame fixing ring 8, a coil frame fixing frame 9, a cylinder 18, an exhaust valve plate 19, exhaust silencers 21,22 and 23, sealed shells 1,2 and 2', an air inlet pipe 29, an air outlet pipe 30, connecting screws 25,26 and 27, nuts 28, an air inlet pipe 29 and an air outlet pipe 30. The hermetic shell of the compressor of the present invention is divided into three parts, namely, a left side shell 2, a middle shell 1, and a right side shell 2'.
The rotor assembly comprises connecting screws 16 and 17, a piston connecting frame 6, a front compression spring 24, an air inlet silencing baffle 12, a piston 11, air inlet silencers 13 and 14, an air inlet valve plate 15, a magnetic ring 7 and a correction spring 10.
Describing the structure of the coil holder assemblies 3,4,5 in detail with reference to fig. 2, the coil holder assembly of the present invention is formed by fixing four quarter-circle arc coil holders 300 (herein referred to as small coil holders) together by the coil holder locking ring 5, each small coil holder 300 has a symmetrical rectangular flange 302 at the upper portion and a symmetrical rectangular groove 301 at the lower portion, and an arc groove 303 for placing the coil holder locking ring 5 at the side of the small coil holder 300, an oval handle 304 is provided in the middle of each small coil holder 300, and the oval handle 304 is used for facilitating the installation of the coil 401, and also for making the structure between the coil 401 and the handle 304 compact and efficient in operation, and there is a certain depth between the oval handle 304 and the inner edge 105 and the outer edge 106 of the small coil holder 300, so that a sufficient space is available for winding the required number of turns of the coil 401 according to the power requirement of the compressor.
Referring to fig. 3 for describing the assembly of the coil rack in detail, the coil rack is assembled by placing the upper rectangular flange 302 of each small coil rack 300 into the rectangular groove 301 of the lower part of another small coil rack to be assembled into a round coil rack in a crossing manner, then locking the round coil rack by the coil rack locking ring 5, and finally forming the whole coil rack 3,4,5. Both sides of the coil rack are fixed with a coil rack fixing frame 9 through a coil rack fixing ring 8 in the middle shell 1. The number of turns of the coil 401 on the coil rack is determined according to the power requirement of the compressor, the coil 401 with the determined number of turns is wound on the handle rod 304 of each small coil rack, then the small coil rack 300 with the coil 401 is assembled, and finally the whole coil rack with the coil is formed.
The structure of the piston 11 will be described in detail with reference to fig. 4,5 and 6, the left end surface 1101 of the piston 11 has four screw holes 1102 which are screw-coupled with the intake silencer baffle plate 12, and the rightmost side of the piston 11 is provided with an annular flange 1103 for supporting the hold-down spring 24.
The interior of piston 11 is divided into two parts, with the left side forming a left side cavity 1108 by piston inner surface 1105 and the left side of flapper 1106, and piston shaft 1107, and the right side forming a right side cavity 1109 by piston inner surface 1104 and the right side of flapper 1106, piston shaft 1107 extending inside left side cavity 1108. The left cavity 1108 is used for placing the air intake silencers 13 and 14, the right cavity 1109 is in transition fit with the air cylinder 18 to do work, eight regularly distributed air inlets 1110 are formed in the inner baffle 1106 of the piston 11, the air inlets 1110 are blocked by the air inlet valve plate 15 under normal air pressure, the air inlet valve plate 15 is fixedly connected with a threaded hole 1601 on the right side of the baffle 1106 through a slotted cylinder head screw 16 in a threaded manner, and when the inner air pressure is far lower than the external atmospheric pressure, the air inlet valve plate 15 is opened. The right cavity 1109 is in transition fit with the cylinder 18 to do work, an inner thread 601 is arranged on the inner side of an extending section of the piston shaft 1107 in the piston and is used for being in threaded connection with the piston connecting frame 6, external threads are arranged on two side end parts of the piston connecting frame 6, threads on the left side of the piston connecting frame are in threaded connection with the left piston 11, and threads on the right side of the piston connecting frame are in threaded connection with the right piston 11'.
Referring to fig. 7, 8, 9, 10, 11, 12 and 13 for describing the structure of the intake silencer in detail, the intake silencer of the present invention is composed of two parts, namely a primary intake silencer 13 and a secondary intake silencer 14, the left end face of the primary intake silencer 13 is provided with three crescent grooves 1302 and a shaft hole 1303 matched with a piston shaft 1107, a stepped groove 1309,1310 is formed in the center of the right end face of the shaft hole, the stepped groove 1309 and the annular boss 1310 are respectively formed, a circular cavity 1304 and an internal baffle 1305 are formed in the parts, a circular groove 1306 is formed in the internal baffle 1305, and two stepped grooves 1307,1308 are formed in the right end face of the parts, namely a groove 1307 and a boss 1308, for matching with the secondary intake silencer 14.
The left end face of the secondary intake silencer 14 is also provided with two stepped grooves 1402,1401, namely a groove 1402 and a boss 1401, which are used for being matched with the primary intake silencer 13, the groove 1309 of the primary intake silencer 13 is tightly contacted with the boss 1041 of the secondary intake silencer 14, but the groove 1310 is not jointed with the boss 1402, and a gap is reserved. The left end face of the shaft hole inside the secondary air intake silencer 14 is provided with a stepped groove 1404,1405 which is an annular boss 1404 and an annular groove 1405 respectively, the annular groove 1309 of the primary air intake silencer 13 is tightly attached to the annular boss 1405 of the secondary air intake silencer 14, but the annular boss 1310 is not attached to the annular groove 1405, and a gap is reserved between the annular boss 1310 and the annular groove 1405.
The second-stage intake silencer 14 is internally provided with a circular cavity 1406, a left baffle 1408 in the part is provided with a circular groove 1407, a right baffle 1409 in the part is provided with three crescent grooves 1410 and a shaft hole 1403 matched with a piston shaft 1107, and the right baffle 1409 is a certain distance from the right end face of the part, so that the intake of the piston 11 is facilitated, and a better silencing effect can be realized. The intake silencers 13,14 are engaged with the piston shaft 1107 through their own shaft holes 1303,1403, and the thickness of the intake silencers 13,14 is consistent with the width of the left cavity 1108 inside the piston, i.e., the left end face 1101 of the piston 11 is flush with the left end face of the intake silencers 13, 14.
Describing the structure of the intake silencer baffle plate 12 in detail with reference to fig. 14, the intake silencer baffle plate 12 is provided with 4 threaded holes 1202 which are regularly distributed, meanwhile, a through hole 1203 is formed in the middle of the intake silencer baffle plate 12, the intake silencer baffle plate 12 is arranged at the left side of the intake silencers 13 and 14, and on one hand, the intake silencers 13 and 14 are fixed to move axially; at the same time, the air intake silencer baffle plate 12 is provided with three crescent through holes 1201, when the air intake silencer baffle plate 12 is installed, the crescent through holes 1201 of the air intake silencer baffle plate 12 are aligned with crescent grooves 1410 on the left end faces of the air intake silencers 13 and 14, meanwhile, the through holes 1203 of the air intake silencer baffle plate 12 penetrate through a piston shaft 1107, and finally, through threaded connection with threaded holes 1102 of the piston 11 through threaded holes 1203 of the air intake silencer baffle plate 12 by using slotted cylindrical head screws 17, fixing is achieved.
As shown in fig. 15 and 16, the cylinder 18 of the present invention is similar to a cylinder, the left end surface of the cylinder 18 is provided with four symmetrically distributed through holes 1806, the left side surface of the cylinder cavity 1802 is provided with a circular groove 1804, meanwhile, the center position of the circular groove 1804 is provided with a threaded hole 1803 (blind hole), the exhaust valve plate 19 is fixed by a slotted cylinder head screw 20, the exhaust valve plate 19 shields the four through holes 1801 in a normal state, and when the exhaust pressure is greater than the valve plate opening pressure, the exhaust valve plate 19 is opened. The cylinder cavity 1802 is a transition fit with the exhaust mufflers 21,22,23 to facilitate installation of the exhaust mufflers 21,22,23, and the right end face 1805 of the cylinder 18 is flush with the right end face of the secondary exhaust muffler 22. Meanwhile, the right end face 1805 of the air cylinder 18 is provided with 4 symmetrically distributed threaded holes 1806, and the air cylinder 18 is in threaded connection with the threaded holes 1806 through slotted cylindrical head screws 26, so that the air cylinder 18 is fixed with the sealed shells 1,2 and 2'.
The construction of the exhaust silencers 21,22,23 is described in detail below with reference to fig. 17, 18, 19, 20, 21,22,23, 24, 25, and the exhaust silencers 21,22,23 of the present invention are composed of three parts, namely, a primary exhaust silencer 21, a secondary exhaust silencer 22, and a tertiary exhaust silencer 23, respectively. The left side of the primary exhaust silencer 21 is a circular end face 2101, the right end face of the primary exhaust silencer is provided with a stepped groove, which is respectively an annular groove 2102 and an annular boss 2103, and the middle baffle 2104 is provided with 4 symmetrically distributed through holes 2105. The left end face of the secondary exhaust silencer 22 is provided with a stepped groove which is respectively an annular groove 2201 and an annular boss 2202, a middle baffle 2203 is provided with 4 symmetrically distributed through holes 2204, the right side of the middle baffle 2203 is provided with a cavity 2205, the right side end face 2206 is provided with 4 symmetrically distributed threaded holes 2207, the exhaust silencers 21,22 and 23 are in threaded connection with the threaded holes 2207 through slotted cylinder head screws 25, the exhaust silencers 21,22 and 23 are fixed with the sealed shells 1,2 and 2', meanwhile, the center position of the right end face 2206 of the exhaust silencer is provided with a threaded hole 2208 (communicated with the cavity 2205) for being in threaded connection with external threads 2304 on the left side of the tertiary exhaust silencer 23, and the fixation is realized. The three-stage exhaust silencer 23 is formed by transitional connection of a left cylinder 2301 and a right cylinder 2303 through a round table cylinder 2302, and part of external threads 2304 are formed outside the left cylinder 2301 and are used for being in threaded connection with a threaded hole 2208 of the two-stage exhaust silencer 22, so that fixation is realized.
As shown in fig. 26, the intake valve plate 15 of the present invention is a circular thin member, the left end surface 1500 of the intake valve plate is provided with 8 circular bosses 1501 with equal thickness, the circular bosses 1501 are used for shielding the intake holes 1110 of the piston 11 in a normal state, meanwhile, a through hole 1502 is formed in the center of the intake valve plate 15, and the slotted cylinder head screw 16 is in threaded connection with the threaded hole 1601 on the right side of the baffle 1106 through the through hole 1502, so as to achieve fixation. When the internal air pressure is far lower than the external atmospheric pressure, the intake valve plate 15 is opened.
As shown in fig. 27, the exhaust valve plate 19 of the present invention is a circular thin member, the left end surface 1900 of the exhaust valve plate is provided with 4 circular bosses 1901 with equal thickness, the circular bosses 1901 are used for shielding the exhaust holes 1801 of the air cylinder 18 in a normal state, meanwhile, a through hole 1902 is formed in the center of the exhaust valve plate 19, the through hole 1902 is used for screwing through a slotted cylinder head screw 20, and the slotted cylinder head screw 20 is connected with a threaded hole 1803 (blind hole) in the middle of the air cylinder 18 through the through hole 1902, so as to realize fixation. When the internal pressure is greater than the discharge valve plate opening pressure, the discharge valve plate 19 is opened.
The construction of the compressor housing (seal housing 1,2 ') according to the present invention is described in detail below with reference to fig. 28, 29, 30, 31, 32, and 33, and the compressor housing is divided into three parts, namely, a left side housing 2, a middle housing 1, and a right side housing 2'. The inner end surfaces 201 of the two side shells 2,2' are respectively provided with 4 holes 202, and the holes 202 are used for fixing the middle shell 1 through slotted cylindrical head screws 27, and the slotted cylindrical head screws 27 are connected with nuts 28 through the through holes 202. The inner sides 206 of the outer end surfaces of the two side shells 2 and 2' are provided with annular stepped grooves 208 and 209, which are respectively an annular groove 208 and an annular boss 209, and the right end surfaces of the two side shells are simultaneously provided with 4 regularly and symmetrically distributed internal threaded holes 211 and 4 regularly and symmetrically distributed external threaded holes 212. The central threaded hole 210 and the three-stage exhaust silencer are in threaded connection with the threaded hole 211 and the threaded hole 2207 through the socket head cap screws 25, so that the exhaust silencers 21,22 and 23 are fixed with the sealed shells 1,2 and 2'; the cylinder 18 is fixed with the sealed shells 1,2 and 2' through the threaded connection of the inner hexagon screws 26, the threaded holes 212 and the threaded holes 1806; and through holes 210 which are in clearance fit with the three-stage exhaust silencers 23 are formed in the center of the two side housings 2, 2'. The middle shell 1 is similar to a cylinder shape, the left side and the right side of the middle shell are respectively provided with 4 holes 103 and 101, the left side 4 holes 103 are fixed with the two side shells 2 and 2 through hexagonal screws 27, nuts 28 and holes 201,101,103, meanwhile, the outer surface of the middle shell 1 is provided with an air inlet hole 105, and an annular boss 108 in the shell of the middle shell 1, a coil frame fixing ring 5 and a coil frame fixing frame 6 are used for fixing the coil frames 3,4 and 5.
As shown in fig. 34 and 35, the permanent magnet 4 (magnetic ring) of the invention is embedded in the groove 601 of the piston connecting frame 6 and can pass through the coil frame, and both ends of the piston connecting frame 6 are simultaneously provided with the internal thread 602 and the external thread 603 to realize the fixation with the piston 11.
As shown in fig. 36 and 37, in the present invention, an intake silencer is added to the inside of the piston and is fixed by the baffle plate, and at the same time, springs are installed at both side ends of the piston, the left side spring is supported by the coil holder fixing frame 9 and the fixed baffle plate 10, and the right side spring is supported by both side housings and the piston. The invention maintains coaxiality when the cylinder and the piston are installed, reduces the air gap and increases the specific thrust of the compressor, and realizes compact structure, stable connection, high efficiency in operation and long fatigue life of the compressor by carrying out structural optimization on a plurality of parts.
The whole working process of the double-cylinder opposite moving-magnet type reciprocating linear compressor comprises the steps that alternating current is conducted through coils of a coil frame of the compressor, an alternating magnetic field is generated inside the coil frame (if an electric signal is positive, an N-pole to an S-pole magnetic field is generated from top to bottom, and an S-pole to an N-pole magnetic field is generated on the contrary), at the moment, the moving direction of a magnetic ring 7 on a piston connecting frame 6 in the alternating magnetic field is continuously changed, the magnetic ring 7 is embedded in a groove of the piston connecting frame 6, at the moment, the moving direction of a piston 6 is consistent with the moving direction of a magnetic ring 10, the piston 6 makes reciprocating linear motion in the left-right direction according to the change of the magnetic field, so that compressed gas working is achieved, and the low-temperature low-pressure refrigerant gas is compressed into high-temperature high-pressure refrigerant gas through the piston motion.
In summary, the magnetic ring 10 is embedded into the piston 6 through the piston connecting frame 6, so that the internal size is reduced, the air gap is reduced, the specific thrust of the compressor is increased, and meanwhile, the compression springs are arranged on two sides of the piston 6, so that the resonant frequency of the compressor is achieved, and the working efficiency of the compressor can be greatly improved. The invention optimizes the structure of a plurality of parts, realizes the effects of compact structure, stable connection, high efficiency in operation and long service life of the compressor, and has remarkable progress and good popularization and application value for the prior art.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (8)

1. A double-cylinder opposed moving-magnet type reciprocating linear compressor characterized by comprising a sealed housing (1, 2 '), a mover assembly and a coil carrier assembly (3, 4, 5) located within the sealed housing (1, 2');
the rotor assembly comprises a left piston (11) and a right piston (11 ') which are positioned on the central axis of the sealed shell (1, 2'), a piston connecting frame (6) and a ring magnet (7) which is embedded in a groove of the piston connecting frame (6), wherein the right end of the left piston (11) is elastically supported on the left wall surface of the left coil frame fixing frame (9) through a left correction spring (10) and a left coil frame fixing frame (9), and the left end of the left piston (11) is elastically supported on the inner wall of the left shell (2) through a left compression spring (24); the left end of the right piston (11 ') is elastically supported on the right wall surface of the coil rack assembly fixing rack (9 ') through a right correction spring (10 ') and a right coil rack assembly fixing rack (9 '), and the right end of the right piston (11 ') is elastically supported on the inner wall of the right shell (2 ') through a right compression spring (24 ');
the coil frame assembly (3, 4, 5) is fixed on the periphery of the piston connecting frame (6) through a coil frame fixing ring (8, 8 ') and a coil frame fixing frame (9, 9 '), a coil (4) is wound in the coil frame assembly (3, 4, 5), and a magnetic ring (7) on the piston connecting frame (6) makes reciprocating linear motion in an alternating magnetic field generated inside the coil frame assembly (3, 4, 5), so that the compressed gas of the left piston (11) and the right piston (11 ') does work, and the compressed gas of low temperature and low pressure is compressed into the compressed gas of high temperature and high pressure;
an air inlet silencer (13, 14) is arranged in a right cavity of the left piston (11), the left cavity of the left piston (11) is in transition fit with a left cylinder (18), and an exhaust silencer (21, 22, 23) is arranged in the left cylinder (18); an air inlet silencer (13 ',14 ') is arranged in the left cavity of the right piston (11 '), the right cavity of the right piston (11 ') is in transition fit with a right cylinder (18 '), and an exhaust silencer (21 ',22',23 ') is arranged in the right cylinder (18 ');
the left cylinder (18) is cylindrical, a cylinder inner cavity (1802) is formed in the left cylinder, four symmetrically distributed through holes (1801) are formed in the right side end face of the left cylinder (18), a circular groove (1804) is formed in the right side face of the cylinder inner cavity (1802), a threaded hole (1803) for fixing an exhaust valve plate (19) is formed in the center of the circular groove (1804), and the cylinder inner cavity (1802) and the exhaust silencers (21, 22 and 23) are in transition fit; the right cylinder (18 ') is in a cylindrical shape, a cylinder inner cavity (1802 ') is formed in the right cylinder, four symmetrically distributed through holes (1801 ') are formed in the left end face of the right cylinder (18 '), a circular groove (1804 ') is formed in the left side face of the cylinder inner cavity (1802 '), a threaded hole (1803 ') for fixing an exhaust valve plate (19 ') is formed in the center of the circular groove (1804 '), and the cylinder inner cavity (1802 ') and the exhaust silencers (21 ',22',23 ') are in transition fit;
the left end face (1805) of the left air cylinder (18) is flush with the left end face of the middle part (22) of the exhaust silencer (21, 22, 23), the left end face (1805) of the left air cylinder (18) is provided with four symmetrically distributed threaded holes (1806), and the left air cylinder (18) is fixed with the left casing (2) through threaded connection of slotted cylindrical head screws (26) and the threaded holes (1806); the right end face (1805 ') of the right cylinder (18 ') is flush with the right end face of the middle part (22 ') of the exhaust silencer (21 ',22',23 '), the right end face (1805 ') of the right cylinder (18 ') is provided with four symmetrically distributed threaded holes (1806 '), and the right cylinder (18 ') is fixed with the right casing (2 ') through threaded connection of slotted cylinder head screws (26 ') and the threaded holes (1806 ').
2. The double-cylinder opposed moving-magnet type reciprocating linear compressor according to claim 1, characterized in that the coil holder assembly (3, 4, 5) comprises four quarter-circle coil holders (300), a coil (401) located in the middle of the circle coil holders (300), a coil holder locking ring (5) fixing the circle coil holders (301) together;
the upper part of each circular arc line wrapping frame (301) is provided with a symmetrical rectangular flange (302), the lower part of each circular arc line wrapping frame is provided with a symmetrical rectangular groove (301), and the side surface of each circular arc line wrapping frame is provided with an arc-shaped groove (303) for placing the locking ring (5) of the circular arc line wrapping frame;
each arc line wrapping frame (300) is provided with an oval handle rod (304) in the middle for winding the coil (401).
3. The double-cylinder opposed moving-magnet type reciprocating linear compressor according to claim 1, characterized in that the outer surface of the piston connecting frame (6) is provided with an annular groove (601) for placing a magnet ring (5).
4. The double-cylinder opposed moving-magnet type reciprocating linear compressor according to claim 1, characterized in that the right end surface (1101) of the left piston (11) is provided with four screw holes (1102) screw-connected with an intake silencer baffle plate (12), and the leftmost side of the left piston (11) is provided with an annular flange (1103) for supporting the left compression spring (24);
the left end surface (1101 ') of the right piston (11 ') is provided with four threaded holes (1102 ') which are in threaded connection with the air inlet silencer baffle plate (12 '), and the rightmost side of the right piston (11 ') is provided with an annular flange (1103 ') for supporting the right compression spring (24 ');
a baffle plate (1104) which divides the inner part of the left piston (11) into a left cavity (1105) and a right cavity (1106) is formed in the left piston (11); eight air inlets (1108) are uniformly distributed on the baffle (1104), and the air inlets (1108) are blocked by the air inlet valve plate (15) under normal air pressure; the centre of the baffle (1104) has a piston shaft (1109) extending inside the left cavity (1105);
a baffle (1104 ') for dividing the inner part of the right piston (11 ') into a right side cavity (1105 ') and a left side cavity (1106 ') is formed in the right piston (11 '); eight air inlets (1108 ') are uniformly distributed on the baffle plate (1104'), and the air inlets (1108 ') are blocked by the air inlet valve plate (15') under normal air pressure; the center of the baffle (1104 ') has a piston shaft (1109 ') extending inside the right side cavity (1105 ').
5. The double-cylinder opposed moving-magnet reciprocating linear compressor according to claim 4, characterized in that the intake silencers (13, 14) consist of a left-hand part (14) and a right-hand part (13);
the right end face of the right part (13) is provided with three crescent grooves (1301) and a shaft hole (1302) matched with the piston shaft lever (1109), the center position and two ends of the left end face of the right part (13) are provided with first step grooves, and a circular ring-shaped cavity (1303) and an internal baffle (1304) are arranged in the right part;
the inside of left side part (14) has ring cavity (1401), right side baffle (1403) and left side baffle (1402), have three crescent recess (1404) and carry out complex shaft hole (1409) with piston axostylus axostyle (1109) on left side baffle (1402), the central point of left side part (14) left end face puts and both ends open have with the first ladder groove of right side part (13) carries out complex second ladder groove.
6. The double-cylinder opposed moving-magnet type reciprocating linear compressor according to claim 4, characterized in that the exhaust muffler (21, 22, 23) is composed of three parts of a left side part (23), a middle part (22), a right side part (21);
the left part (23) is formed by transitional connection of a right cylinder (2301) and a left cylinder (2303) through a round table-shaped cylinder (2302), and part of external threads (2304) are arranged outside the right cylinder (2301) and are used for being in threaded connection with a threaded hole (2208) in the center of a left end face (2206) of the middle part (22);
the right end face of the middle part (22) is provided with a stepped groove (2201), the middle baffle plate (2203) in the middle part is provided with 4 symmetrically distributed through holes (2204), and the left end face (2206) of the middle part is provided with 4 symmetrically distributed threaded holes (2207);
the left side of right side part (21) is ring-shaped terminal surface (2103), and its right-hand member face opens has ladder groove (2102), and inside intermediate baffle (2104) open 4 symmetrically distributed's through-hole (2105).
7. The double-cylinder opposite moving-magnet type reciprocating linear compressor according to claim 1, characterized in that the outer surface of the piston connecting frame (6) is provided with an annular groove (601) for placing a magnet ring (7), and the left end of the piston connecting frame (6) is provided with a threaded hole (602) and an external thread (603) which are in threaded connection with the left piston (11).
8. The double-cylinder opposed moving-magnet type reciprocating linear compressor according to claim 1, characterized in that a right end face (901) of the coil holder fixing frame (9) is fixed to a left end of the coil holder assembly (3, 4, 5);
the left end face (901 ') of the coil rack fixing frame (9') is fixed at the right end of the coil rack assembly (3, 4, 5);
the left end face (902) of the coil rack group fixing frame (9) is provided with an annular boss (903) corresponding to the annular boss formed by the left piston (11) right end piston shaft rod (1109) and the air inlet silencer baffle plate (12), and the left correction spring (10) is supported between the annular boss formed by the left piston (11) right end piston shaft rod (1109) and the air inlet silencer baffle plate (12) and the annular boss (903).
CN202310188431.4A 2023-03-02 2023-03-02 Double-cylinder opposite moving-magnet type reciprocating linear compressor Pending CN116658395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310188431.4A CN116658395A (en) 2023-03-02 2023-03-02 Double-cylinder opposite moving-magnet type reciprocating linear compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310188431.4A CN116658395A (en) 2023-03-02 2023-03-02 Double-cylinder opposite moving-magnet type reciprocating linear compressor

Publications (1)

Publication Number Publication Date
CN116658395A true CN116658395A (en) 2023-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310188431.4A Pending CN116658395A (en) 2023-03-02 2023-03-02 Double-cylinder opposite moving-magnet type reciprocating linear compressor

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Country Link
CN (1) CN116658395A (en)

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