Summary of the invention
The present invention is carried out to solve the problems referred to above, it is therefore intended that provide a kind of oil-free lubrication Linearkompressor.
The invention provides a kind of oil-free lubrication Linearkompressor, have the feature that, including: compression unit, it is used for
Refrigerant is compressed;And linear electric motors, for providing driving force for compression unit, wherein, compression unit includes gas
Cylinder component, piston component, at least one flat spring, flat spring support and a plurality of cylindrical spring, cylinder assembly includes cylinder,
Piston component includes piston, the permanent magnet being arranged on piston and the piston holder being connected with flat spring, linear electric motors quilt
The bolt group of connecting plate spring support and cylinder is fixed and overlaps on the permanent magnet, between having between permanent magnet and linear electric motors
Gap, one end of piston component is fixed on flat spring support by flat spring, and the other end is arranged on linear electric motors and cylinder assembly
Between, cylindrical spring is arranged between piston component and cylinder assembly, and permanent magnet is at the electromagnetic force by linear electric motors
Rear drive piston does straight reciprocating motion for compressing refrigerant in cylinder.
In the oil-free lubrication Linearkompressor that the present invention provides, it is also possible to have a feature in that wherein, piston component
Also including gas bearing, inlet valve, gas bearing includes that gas bearing seat, gas bearing seat are the opening straight tube with bottom surface,
Inlet valve is arranged on opening straight tube outer bottom center, piston be provided centrally with hollow circular cylinder, the end face of this hollow circular cylinder
Being connected with the bottom surface in the opening straight tube of gas bearing, piston is fixing with gas bearing seat to be connected, and space between the two is
Gas storage chamber.
It addition, in the oil-free lubrication Linearkompressor that the present invention provides, it is also possible to have a feature in that wherein, gas
Body bearing block uses sealed with brazing with the contact surface of piston.
It addition, in the oil-free lubrication Linearkompressor that the present invention provides, it is also possible to have a feature in that wherein, gas
Cylinder component also includes cylinder head, air bleeding valve, volute spring, and cylinder head is fixing with the ring flange end of cylinder to be connected, and air bleeding valve is at gas
It is connected on the end face of the cylindrical inner via hole of cylinder by volute spring in cylinder cap.
It addition, in the oil-free lubrication Linearkompressor that the present invention provides, it is also possible to have a feature in that wherein, row
Air valve uses plate-like air bleeding valve.
It addition, in the oil-free lubrication Linearkompressor that the present invention provides, it is also possible to have a feature in that wherein, gas
The two ends, lateral wall of body bearing block are respectively arranged with two parallel and annular gas tanks with this gas bearing seat central axis,
Throttle orifice that is that be symmetrical arranged four radial directions on annular gas tank bottom center line and that communicate with gas storage chamber.
It addition, in the oil-free lubrication Linearkompressor that the present invention provides, it is also possible to have a feature in that wherein, gas
Body bearing block lateral wall is also cased with the lubrication circle that a plurality of self-lubricating material is made, and self-lubricating material is polyimides, corresponding
The throttling slit communicated with throttle orifice it is provided with in the center of annular gas tank.
It addition, in the oil-free lubrication Linearkompressor that the present invention provides, it is also possible to have a feature in that wherein, circle
The number of post spring is at least four, and this cylindrical spring circumference is evenly provided on the bottom surface of piston.
It addition, in the oil-free lubrication Linearkompressor that the present invention provides, it is also possible to have a feature in that wherein, live
The flange end of plug support is fixing with the center of flat spring to be connected, and the other end is fixed with the bottom surface of piston and is connected and in piston holder
Heart through hole is connected with the central through hole of piston.
It addition, in the oil-free lubrication Linearkompressor that the present invention provides, also include shell and a plurality of for damping
Support spring, shell is connected with flat spring support, cylinder by a plurality of support springs.
The effect of invention and effect
According to oil-free lubrication Linearkompressor involved in the present invention, have the feature that, including for refrigeration is situated between
The compression unit that matter is compressed;And for providing the linear electric motors of driving force for compression unit, wherein compression unit includes
Cylinder assembly, piston component, at least one flat spring, flat spring support and a plurality of cylindrical spring, cylinder assembly includes gas
Cylinder, piston component includes piston, the permanent magnet being arranged on piston and the piston holder being connected with flat spring, linear electric motors
The bolt group of connected flat spring support and cylinder is fixed and overlaps on the permanent magnet, has between permanent magnet and linear electric motors
Gap, one end of piston component is fixed on flat spring support by flat spring, and the other end is arranged on linear electric motors and air cylinder group
Between part, cylindrical spring is arranged between piston component and cylinder assembly, and permanent magnet is at the electromagnetism masterpiece by linear electric motors
In cylinder, straight reciprocating motion is done for compressing refrigerant with rear drive piston.
Have employed Linear Synchronous vibration motor according to oil-free lubrication Linearkompressor involved in the present invention, Linear Synchronous shakes
Swing motor and can utilize the resonance principle of its electromagnetic force and spring force, automatically generate high-frequency reciprocating linear motion, can push directly on
Mover moves.Linearkompressor does not convert rotational motion into reciprocating crank mechanism, therefore its little, efficiency of loss
Height, compact conformation, volume are little.
Oil-free lubrication Linearkompressor involved in the present invention have employed the flat spring of bigger radial rigidity and props up bulging
Contracting machine piston, for keeping the clearance seal of motor process piston and cylinder;May be provided for required for piston movement is axial
Rigidity, controls the resonant frequency of piston movement.Use flat spring support technology can realize Linearkompressor clearance seal.
The Linearkompressor of the present invention uses flat spring and cylindrical spring to combine and supports compressor piston assembly, is greatly improved
The axial rigidity of Linearkompressor and radial rigidity.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, real below
Execute example to combine accompanying drawing the oil-free lubrication Linearkompressor of the present invention is specifically addressed.
Fig. 1 is oil-free lubrication Linearkompressor internal structure generalized section in embodiments of the invention.
As it is shown in figure 1, oil-free lubrication Linearkompressor 100 have linear electric motors 10, compression unit 20, outer cover unit 30,
And a plurality of support spring 40.
Linear electric motors 10 include coil rack 11, excitation coil 12, left outside stator 13, right external stator 14.
Coil rack 11 is used for accommodating enamel-covered wire.
Enamel-covered wire is wrapped in by coil winding machine and makes on coil rack 11 by excitation coil 12.
Left outside stator 13 and right external stator 14 be stuck in excitation coil 12 both sides constitute linear electric motors 10, linear electric motors 10 in
Cylindric.
Compression unit 20 include cylinder assembly 21, flat spring assembly 22, a plurality of bolt group 23, piston component 24,
A plurality of cylindrical springs 25, compression chamber 26.
Cylinder assembly 21 includes cylinder 211, inner stator 212, cylinder head 213, a plurality of cylinder head trip bolt 214, row
Air valve 215, volute spring 216, exhaustor 217.
Cylinder 211 is in ring flange shape, and one end is flange, and the other end is disk and is evenly arranged with 8 along disk circumference
Through hole, cylinder 211 has cylindrical inner via hole.
The cylindrical shape of inner stator 212, is enclosed within the outside of cylinder 211 flange and fixing with cylinder 211 is connected.
Cylinder head 213 shape in disk form, is provided with cavity at the middle part of disk, is additionally provided with and circle in cylinder head 213
The exhaust duct aperture of the central cavity connection of dish.
Cylinder head 213 is fixedly connected on the end face of cylinder 211 disk end by 8 cylinder head trip bolts 214.
Air bleeding valve 215 uses plate-like air bleeding valve.
Volute spring 216 is for connecting air bleeding valve 215 in the cavity of cylinder head, and supports air bleeding valve 215 and be allowed to connect
On the end face of cylinder 211 cylinder inner via hole.
One end of exhaustor 217 is by exhaust duct aperture and cylinder head 213 fixed seal connection and the cavity with cylinder head 213
Being connected, the other end leads to the outside of outer cover unit 30.
Flat spring assembly 22 includes at least one flat spring 221, a plurality of packing ring 222, flat spring support 223, a plurality of
Flat spring trip bolt 224, nut 225.
Flat spring 221 has bigger radial rigidity and axial rigidity, and flat spring 221 is in the form of annular discs, and middle part is provided with logical
Hole, quantity at least one, embodiment is 3.
2 packing rings 222 are respectively separated and are arranged between 3 flat springs 221.
Flat spring support 223 is hollow cylindrical, and one end is provided with the boss for installing plate spring 221, and this boss can
To prevent flat spring 221 slip vertically, boss is circumferentially evenly arranged with 4 outside threaded holes, on the end face of the other end
Circumference is uniformly arranged 8 through holes.
The outer rim of 3 flat springs 221 is fixed on flat spring support 223 by 4 flat spring trip bolts 224.
The quantity of bolt group 23 is 8 groups, is respectively correspondingly arranged on 8 through holes of flat spring support 223 and cylinder 211
In, linear electric motors 10 are sandwiched between flat spring support 223 and cylinder 211, and connected flat spring support 223 and cylinder 211
8 groups of bolt groups 23 fixed.
Fig. 2 is piston assembly structure generalized section in oil-free lubrication Linearkompressor in embodiments of the invention.
As in figure 2 it is shown, piston component 24 includes piston 241, permanent magnet 242, gas bearing 243, inlet valve 244, answers
Several inlet valve trip bolts 245, piston holder 246, a plurality of piston trip bolt 247.
Piston 241, in having the drum of bottom surface, is additionally provided with hollow circular cylinder at the center of its bottom surface, this hollow
Passage is as the inlet channel of refrigerant, and piston 241 material is metal, is aluminium alloy in embodiment.
Permanent magnet 242 is drum, permanent magnet 242 be enclosed within outside piston 241 and with piston 241 company of being adhesively fixed
Connect.
Gas bearing 243 includes gas bearing seat 243a, gas storage chamber 243b, annular gas tank 243c, throttle orifice 243d, lubrication
Circle 243e, throttling slit 243f, gas bearing air inlet 243g, check valve 243h.
Gas bearing seat 243a is the opening straight tube with bottom surface, and this opening straight tube is enclosed within the hollow circular cylinder of piston 241
Outside on and fixing with piston 241 be connected, the space formed between the two is gas storage chamber 243b;Wherein, this hollow circular cylinder
End face be connected with the bottom surface in gas bearing seat 243a opening straight tube;Gas bearing seat 243a material is metal, embodiment
In be aluminium alloy;Gas bearing seat 243a uses sealed with brazing with the contact surface of piston 241.
The two ends, straight tube lateral wall of gas bearing seat 243a be respectively arranged with two parallel and with this gas bearing seat 243a
The annular gas tank 243c of central axis.
Throttling that is that be symmetrical arranged four radial directions on annular gas tank 243c bottom center line and that communicate with gas storage chamber 243b
Hole 243d.
3 lubrication circle 243e being made up of self-lubricating material also it are cased with on the lateral wall of gas bearing seat 243a, should be from profit
Sliding material is polyimides.
The corresponding center at annular gas tank 243c is provided with the throttling slit 243f communicated with throttle orifice 243d.
Gas bearing air inlet 243g is arranged on the bottom surface of gas bearing seat 243a.
Check valve 243h is arranged in gas bearing air inlet 243g.
Inlet valve 244 is fixedly connected in the outside bottom surface of gas bearing seat 243a by 4 inlet valve trip bolts 245
On heart through hole.
Piston holder 246, in the flange plate-like of flange and have central through hole, the flange end of piston holder 246 sets
Being equipped with external screw thread, ring flange end is circumferentially evenly arranged with 8 screwed holes.
The flange end of piston holder 246 being connected centrally through nut 225 is fixing with flat spring 221 through flat spring 221.
The ring flange end of piston holder 246 is fixedly connected on piston 241 by 8 piston trip bolts 247 and piston 241
Bottom surface and the central through hole of piston holder 246 be connected with the central through hole of piston 241.
One end of piston component 24 is fixed on flat spring support by flat spring, the other end be arranged on linear electric motors 10 with
Between cylinder assembly 21 and and linear electric motors 10 and cylinder assembly 21 between be respectively provided with gap.
Cylindrical spring 25 is used to support between piston component 24 and cylinder assembly 21, at least four cylindrical spring 25 circumference
It is evenly provided on the inner bottom surface of piston 241, is used for improving axial rigidity required when piston 241 moves, cylinder in embodiment
Spring 25 quantity is 6.
Compression chamber 26 is the space formed between piston 241, inlet valve 244, cylinder 211 and air bleeding valve 215.
Outer cover unit 30 includes support 31, lower house 32, upper shell 33.
Support 31 is fixed in the use environment of reality.
Lower house 32 is fixedly connected on support 31, and the side of lower house 32 is provided with air inlet 321, and opposite side is provided with
Exhaust duct aperture.
Upper shell 33 fixed seal connection is on lower house 32.
Linear electric motors 10 and compression unit 20 use 4 to support spring 40 and are supported and are arranged in outer cover unit 30.
Connect lower house 32 supports spring 40 at the lower section of flat spring support 223 one end and cylinder 211 ring flange end
It is respectively arranged below 1.
Accordingly, above relevant position, also it is respectively provided with 1 support spring 40 and be connected with upper shell 33.
4 support spring 40 and are used for alleviating vibration when piston 241 moves and driving lower house 32, upper shell 33 to vibrate institute
The noise sent.
The operation principle of oil-free lubrication Linearkompressor 100 is:
The active force of flat spring 221, the active force of cylindrical spring 25 act on jointly with the electromagnetic force three of linear electric motors 10
Making piston 241 produce resonance motion, permanent magnet drives piston 241 after by the electromagnetic force of linear electric motors in cylinder
Do straight reciprocating motion for compressing refrigerant.Compressor intake method is that working media is from air inlet 321 along intake method
Inside entrance compressor, enter compression chamber 26 through inlet channel and inlet valve 244, working media through piston 241 compress with
After, entering discharge chamber by plate-like air bleeding valve 215, last refrigerant discharges housing by exhaustor 217.
Owing to flat spring 221 has bigger radial rigidity, it is ensured that without radial deflection during piston 241 axially-movable, it is ensured that
Clearance seal between piston 241 and cylinder 211, makes the contactless fricting movement of piston 241, it is achieved compressor oil-free lubrication;Plate
Spring 221 and cylindrical spring 25 act on jointly can provide the axial rigidity required for compressor, controls being total to of piston 241 motion
Vibration frequency.Use the common support of two kinds of springs, substantially increase axial rigidity and the radial rigidity of Linearkompressor so that live
Plug 241 is reliable when resonance motion.
The gas bearing 243 work process when piston 241 moves is:
The working media being drawn into compression chamber 26 is compressed by Linearkompressor piston 241, the pressure in compression chamber 26
When power reaches the unlatching pressure of check valve 243h, a small amount of high-pressure working medium enters gas storage chamber by gas bearing air inlet 243g
243b, if the unlatching pressure that the pressure in compression chamber 26 is less than check valve 243h, check valve 243h closes to prevent gas storage chamber
Working media in 243b is back in compression chamber 26.High-pressure working medium in gas storage chamber 243b is flowed into by throttle orifice 243d
In annular gas tank 243c.Throttle orifice 243d produces certain throttling action to high-pressure working medium, and the working media after throttling exists
Uniformly spreading in annular gas tank 243c, then the working media throttling slit 243f on lubrication circle 243e again carries out two partial nodes
Stream, the working media after throttling flows uniformly into shape the gas bearing 243 gap with cylinder 211 from throttling slit 243f
Becoming air film, air film supports piston component 24 and does straight reciprocating motion in cylinder 211.Linearkompressor 100 uses gas bearing
Support technology achieves the oil-free lubrication of compressor, and utilizes working media itself to realize clearance seal, reduces gas axle
Hold the friction of 243 and cylinder 211, reduce noise when piston 241 moves.