CN209414145U - A kind of pump head and scroll air compressor for scroll air compressor - Google Patents

Abstract

The utility model relates to new-energy automobile braking technology fields, and in particular to a kind of pump head and scroll air compressor for scroll air compressor.Pump head provided by the present application for scroll air compressor; including shell and the scroll plate component being disposed in the housing, anti-rotation crankshaft and elastic component; flying height is formed in the pump head; when in scroll air compressor stopping process; elastic component provides an elastic force for scroll plate component, so that flying height is immobilized and is maintained at maximum rating, and the gap of scroll plate component internal is minimum at this time; it that is to say pump housing gap minimum, pump head inner sealing is good；When pump head internal pressure increase overcomes the elastic force of elastic component, reduce the flying height inside pump head, pump housing gap increases at this time, the deformation of the pump housing can be absorbed by the increase in pump housing gap, and then cause seal member overcompression to be worn after effectively avoiding pump housing heat preservation deformation, the reliability of sealing element is improved under the premise of guaranteeing sealing.

Description

A kind of pump head and scroll air compressor for scroll air compressor

Technical field

The utility model relates to Compressor Technology fields, and in particular to a kind of pump head and whirlpool for scroll air compressor Revolve air compressor.

Background technique

Oil-free turbo-compressor is because it can be realized oil free compression and high-efficient, small in size, light weight, run smoothly Feature is widely used in new energy vehicle brake field.In general, screw compressor by casing, fixed scroll, orbiter, Bracket, crankshaft, anti-rotation mechanism, cooling system and motor are constituted.The molded line of dynamic and static scroll plate is spiral shape, orbiter Opposite fixed scroll is eccentric and differs 180 ° of installations, and multiple crescent-shaped spaces are then formd between dynamic and static scroll plate.In dynamic whirlpool When capstan makees the revolution translation without rotation using the center of fixed scroll as rotation center and with certain radius of turn, outer ring crescent moon Shape space will be constantly mobile to center, at this point, air is gradually pushed to central space, volume constantly reduces and pressure is continuous It increases, until communicating with central exhaust port, pressure-air is discharged the pump housing, completes compression process.

It wherein in oil-free turbo-compressor, is bolted to connection between orbiter and bearing block, anti-rotation eccentric Crank axle includes two cylinders, and the first cylinder is fixedly connected with a pair of bearings, the second cylinder and second pair of bearing inner race gap Cooperation, second pair of bearing outer ring interference be fixed on bracket, and the second cylindrical center opens up bolt hole, by screw by eccentric mechanism Pin is fixed on the inner ring of second pair of bearing, and crank-pin is rotated together with bearing inner race, but it is above-mentioned using bolt by dynamic whirlpool Capstan and bearing block link together, and dynamic and static scroll plate is axially fixed on bracket, and air compressor machine is in high temperature and pressure operational process Deflection of pump body causes pump housing gap to reduce (gap namely between the orbiting and fixed scroll), and dynamic and static scroll plate after a deformation can Lead to sealing part abrasion, and then causes pump housing poor reliability.

Utility model content

(1) the technical problem to be solved by the utility model is to existing turbo-compressor passes through screw for eccentric mechanism Pin is fixed on the inner ring of second pair of bearing, dynamic and static scroll plate axial restraint, is made in the deformation of high temperature and pressure operational process middle pump body Reduce at pump housing gap, leads to sealing part abrasion.

(2) technical solution

In order to solve the above-mentioned technical problem, the utility model provides a kind of pump head for scroll air compressor, packet Scroll plate component, anti-rotation crankshaft and the elastic component for including shell and being disposed in the housing, one end of the anti-rotation crankshaft It is connect with housing into rotation, the other end is rotatedly connected with the scroll plate component, and the anti-rotation crank throw is for preventing the vortex Disk component rotation；Flying height is formed in the pump head, the elastic component is used to provide a bullet for the scroll plate component Power, the scroll plate component in elastic force and the pump head under the action of pressure along the axial movement of the anti-rotation crankshaft, with Increase or reduce the flying height.

One embodiment according to the present utility model, the anti-rotation crankshaft and the shell or the scroll plate component it Between form the flying height, one end of the anti-rotation crankshaft is fixedly connected with one in shell and scroll plate component, institute The other end for stating anti-rotation crankshaft is connect with another in shell and scroll plate component by elastic component, and the elastic component is used for One is provided along axial elastic force for the anti-rotation crankshaft.

One embodiment according to the present utility model, the anti-rotation crankshaft include shaft body and are eccentrically set on the axis Eccentric shaft on ontology, the shaft body are connect with the housing into rotation, and the eccentric shaft and scroll plate component rotation connect It connects.

One embodiment according to the present utility model, the shaft body are connect by elastic component with the shell, described inclined Mandrel and the scroll plate component are rotatablely connected, and the flying height is formed between the shaft body and the shell.

One embodiment according to the present utility model, the elastic component are compressed spring, and one end of the compressed spring is supported By on the housing, the other end is resisted against in the shaft body.

One embodiment according to the present utility model, the shaft body are equipped with blind hole, and one end of the compressed spring is supported By on the housing, the other end is resisted against in the inner bottom wall of the blind hole.

One embodiment according to the present utility model, the shell are equipped with step pin, an end cap of the compressed spring On the step pin, the other end is resisted against in the inner bottom wall of the blind hole.

One embodiment according to the present utility model, the shell is equipped with first axle bearing bore, in the first axle bearing bore First bearing is installed, the shaft body is rotatably assorted with the first bearing, and the step pin is set to the first axle bearing bore It is interior.

One embodiment according to the present utility model, the shaft body further include the shaft shoulder, the shaft shoulder and the first axle The flying height is formed between holding.

One embodiment according to the present utility model, the shaft body are connect with the housing into rotation, and the eccentric shaft is logical It crosses elastic component to be connected with the scroll plate component, forms the flying height between the eccentric shaft and the scroll plate component.

One embodiment according to the present utility model, the scroll plate component are equipped with bearing block, set on the bearing block There is second bearing hole, second bearing is equipped in the second bearing hole, the eccentric shaft and the second bearing are rotatablely connected, institute It states and forms the flying height between the shaft shoulder on eccentric shaft and the second bearing.

One embodiment according to the present utility model, the elastic component are compressed spring, and one end of the compressed spring is solid It is scheduled on the bearing block, the other end is fixed on the eccentric shaft.

One embodiment according to the present utility model, the eccentric shaft are equipped with blind hole, and one end of the compressed spring is solid It is scheduled on the bearing block, the other end is fixed in the inner bottom wall of the blind hole.

One embodiment according to the present utility model, the scroll plate component include mutually matched orbiter and quiet whirlpool Capstan, the fixed scroll is fixed on the housing, and the orbiter is equipped with bearing block, and the bearing block is moved with described The flying height is formed between scroll plate, the elastic component is set between the bearing block and the orbiter.

One embodiment according to the present utility model, the elastic component are compressed spring, and one end of the compressed spring is supported It leans against on orbiter, the other end is resisted against on the bearing block.

One embodiment according to the present utility model, further includes step pin, and one end of the compressed spring is resisted against described On orbiter, the other end is connected by step pin with the bearing block.

One embodiment according to the present utility model, the bearing block are equipped with the first pin hole, set on the orbiter There is the second pin hole, one end of the step pin is fixed in first pin hole, the other end and the second pin hole clearance fit, One end of the compressed spring is socketed on the step pin, and the other end is resisted against in the inner bottom wall of second pin hole.

The utility model additionally provides a kind of scroll air compressor, including pump head as described in any one of the above embodiments.

One embodiment according to the present utility model, the scroll air compressor further include driving motor, the driving Motor is equipped with drive shaft, and the scroll plate component in the drive shaft and the pump head is rotatablely connected.

The utility model has the beneficial effects that the pump head provided by the present application for scroll air compressor, including shell with And scroll plate component, anti-rotation crankshaft and the elastic component being disposed in the housing, flying height is formed in the pump head, works as whirlpool It revolves in air compressor stopping process, elastic component provides an elastic force for scroll plate component, and flying height is made to immobilize holding In maximum rating, the gap of scroll plate component internal is minimum at this time, that is to say pump housing gap minimum, and pump head inner sealing is good It is good；When pump head internal pressure increase overcomes the elastic force of elastic component, reduce the flying height inside pump head, pump housing gap increases at this time Greatly, the deformation of the pump housing can be absorbed by the increase in pump housing gap, so effectively avoid cause after pump housing heat preservation deformation it is close Component overcompression abrasion is sealed, improves the reliability of sealing element under the premise of guaranteeing sealing.

Detailed description of the invention

The advantages of the utility model is above-mentioned and/or additional aspect is from the description of the embodiment in conjunction with the following figures by change Obviously and it is readily appreciated that, in which:

Fig. 1 is the perspective view in the application for the pump head of scroll air compressor；

Fig. 2 is the cross-sectional view of pump head described in embodiment one；

Fig. 3 is the partial enlarged view of Fig. 2；

Fig. 4 is the structural schematic diagram of elastic component；

Fig. 5 is the cross-sectional view of pump head described in embodiment three；

Fig. 6 is the structural schematic diagram of three bottom bracket of embodiment；

Fig. 7 is the portion the C enlarged drawing of Fig. 5.

Wherein corresponding relationship of the Fig. 1 into Fig. 7 between appended drawing reference and component names are as follows:

1, shell, 11, scroll plate component, 111, orbiter, 112, fixed scroll, the 113, second pin hole, 12, anti-rotation Crankshaft, 121, shaft body, 122, eccentric shaft, 123, the shaft shoulder, 124, blind hole, 13, flying height, 14, compressed spring, 15, first Bearing hole, 151, first bearing, 16, step pin, the 161, first cylinder, the 162, second cylinder, 17, bearing block, the 171, second axis Bearing bore, 172, second bearing, the 173, first pin hole, the 18, first cover board, the 19, second cover board.

Specific embodiment

In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen The feature in embodiment and embodiment please can be combined with each other.

As shown in Figures 1 to 6, the utility model provides a kind of pump head for scroll air compressor, including shell 1 And scroll plate component 11, anti-rotation crankshaft 12 and elastic component in the shell 1, one end of the anti-rotation crankshaft 12 It is rotatablely connected with shell 1, the other end is rotatedly connected with the scroll plate component 11, and the anti-rotation crank throw is for preventing the whirlpool 11 rotation of capstan component；Flying height 13 is formed in the pump head, the elastic component is used to mention for the scroll plate component 11 For an elastic force, the scroll plate component 11 is in elastic force and the pump head along the anti-rotation crankshaft 12 under the action of pressure Axial movement, to increase or reduce the flying height 13.

Pump head provided by the utility model for scroll air compressor, including shell 1 and be set to the shell 1 in Scroll plate component 11, anti-rotation crankshaft 12 and elastic component, flying height 13 is formed in the pump head, wherein between the floating Gap 13 forms an amount of floating for 11 mobile cushioning of scroll plate component in shell, and pump housing gap refers to orbiter 111, the seal clearance of fixed scroll 112 tooth top and bottom of the tooth, i.e. flying height 13 are integrally equal to amount of floating plus this body space, float Momentum is integrally constant；In scroll air compressor stopping process, elastic component is that scroll plate component 11 provides an elastic force, So that flying height 13 is immobilized and be maintained at maximum rating, the gap inside scroll plate component 11 is minimum at this time, that is to say the pump housing Gap is minimum, and pump head inner sealing is good；When pump head internal pressure increase overcomes the elastic force of elastic component, make floating inside pump head Dynamic gap 13 reduces, and since whole amount of floating is constant, pump housing gap increases at this time, can be by the increase in pump housing gap come absorption pump The deformation of body, and then avoid the abrasion of orbiter and fixed scroll, can guarantee to improve sealing element under the premise of sealing By property.

The setting of elastic component and flying height 13 realizes the floating of scroll plate component 11 in the application, can pass through floating Gap 13 drives pump body to have variable gap, the deformation of the pump housing is sponged by pump housing gap, with existing vortex Disk component 11 is compared with the fixation of shell 1 leads to the changeless pump head in pump housing gap, after effectively avoiding pump housing heat preservation deformation Cause seal member overcompression to be worn, improves the reliability of sealing element under the premise of guaranteeing sealing.

Embodiment one

As shown in Figures 1 to 4, it is formed between the anti-rotation crankshaft 12 and the shell 1 or the scroll plate component 11 One end of the flying height 13, the anti-rotation crankshaft 12 is fixedly connected with one in shell 1 and scroll plate component 11, institute The other end for stating anti-rotation crankshaft 12 is connect with another in shell 1 and scroll plate component 11 by elastic component, the elasticity Part is used to provide one for the anti-rotation crankshaft 12 along axial elastic force.The flying height 13 can be scroll plate component 11 Internal gap that is to say that pump housing gap forms the effect of a snubber, when pump head shutdown does not work, flying height 13 Maximum, pump housing gap are minimum；When pump head internal pressure increases, flying height 13 reduces, and pump housing gap increases, and pump housing gap increases The deformation quantity of pump housing high temperature deformation is sponged greatly, and then leads to seal member overcompression after effectively avoiding pump housing heat preservation deformation Abrasion improves the reliability of sealing element under the premise of guaranteeing sealing.

As shown in Figures 1 to 4, the anti-rotation crankshaft 12 includes shaft body 121 and is eccentrically set on the shaft body 121 On eccentric shaft 122, the shaft body 121 is rotatablely connected with the shell 1, the eccentric shaft 122 and the scroll plate component 11 rotation connections；The shaft body 121 is connect by elastic component with the shell 1, the eccentric shaft 122 and the scroll plate group Part 11 is rotatablely connected, and the flying height 13 is formed between the shaft body 121 and the shell 1.In this way when pump head is shut down not When work, elastic component is that the anti-rotation crankshaft 12 provides an elastic force towards scroll plate component 11, between floating at this time Gap 13 is maximum, and pump housing gap is minimum；When pump head internal pressure increases, pump body pressure overcomes elastic component elastic force, pushes institute It is mobile axially towards 1 side of shell to state anti-rotation crankshaft 12, flying height 13 reduces at this time, and pump housing gap increases, between the pump housing Gap increase sponges the deformation quantity of pump housing high temperature deformation, and then leads to seal member mistake after effectively avoiding pump housing heat preservation deformation Compression abrasion, improves the reliability of sealing element under the premise of guaranteeing sealing.

As shown in Figure 2 and Figure 4, the elastic component is compressed spring 14, and one end of the compressed spring 14 is resisted against described On shell 1, the other end is resisted against in the shaft body 121；Compressed spring 14 is in compressive state in the initial state, is described Anti- rotation crankshaft 12 provides one by shell 1 towards an elastic force of scroll plate component 11, and the elastic force that compressed spring 14 provides makes The shaft body 121 and the shell 1 between keep a maximum flying height 13, when 11 internal pressure of scroll plate component Scroll plate component 11 provides the pressure towards shell 1 for anti-rotation crankshaft 12 and opens the bullet for overcoming compressed spring 14 when increase Power, the flying height 13 formed between the shaft body 121 and the shell 1 at this time become smaller, and pump housing gap increases.

As shown in Figures 2 and 3, the shaft body 121 is equipped with blind hole 124, and one end of the compressed spring 14 is resisted against On the shell 1, the other end is resisted against in the inner bottom wall of the blind hole 124；Since the shaft body 121 is equipped with blind hole 124, Therefore the position of compressed spring 14 can be defined, to prevent the dislocation of compressed spring 14 to be detached from installation site, together When blind hole 124 setting can also reduce 14 the space occupied of compressed spring, and then reduce the volume of ontology, realization device is small-sized The requirement of change.

Optionally, as shown in Figures 2 to 4, the shell 1 is equipped with step pin 16, an end cap of the compressed spring 14 On the step pin 16, the other end is resisted against in the inner bottom wall of the blind hole 124, wherein the step pin 16 includes coaxially being in Step-like the first cylinder 161 and the second cylinder 162, the outer diameter of first cylinder 161 are greater than the outer of second cylinder 162 Diameter, the internal diameter of the compressed spring 14 is greater than the outer diameter of second cylinder 162, and the outer diameter of the compressed spring 14 is less than institute The outer diameter of the first cylinder 161 is stated, such compressed spring 14 can be set in second main body.It is wherein described in this application The first small cylinder 161 of its street can be with the shell 1 integrated molding be also possible to by welding or snap fit with it is described The inner wall of shell 1 is fixedly connected.First cylinder 161 and second cylinder 162 are an integral structure, and can be described One circle of outside cutting of first cylinder 161 forms second cylinder 162, can also use integrated injection molding.

Optionally, the shell 1 is also possible in the present embodiment equipped with blind hole 124, the shaft body 121 be equipped with The step pin 16 that the blind hole 124 cooperates equally can be realized in the application through blind hole 124 and step pin 16 to compressed spring 14 purposes being fixed.

As shown in Figures 2 to 4, the shell 1 is equipped with first axle bearing bore 15, and the is equipped in the first axle bearing bore 15 One bearing 151, the shaft body 121 are rotatably assorted with the first bearing 151, and the step pin 16 is set to the first bearing In hole 15；The scroll plate component 11 is equipped with bearing block 17, and the bearing block 17 is equipped with second bearing hole 171, and described the Second bearing 172 is equipped in two bearing holes 171, the eccentric shaft 122 is rotatablely connected with the second bearing 172, due to described Bearing body and eccentric shaft 122 are eccentric settings, thus can limit the scroll plate component 11 do plane rotation movement without Rotation.

As shown in Figures 2 and 3, the scroll plate component 11 includes that the scroll plate component 11 includes mutually matched dynamic Scroll plate 111 and fixed scroll 112, the fixed scroll 112 are fixed on the shell 1, and the orbiter 111 is equipped with The bearing block 17, the fixed scroll 112 are fixed by screws on the shell 1, and orbiter 111 is bent by anti-rotation Axis 12 realizes anti-rotation function, and during compressor operation, the air of low-temp low-pressure enters dynamic and static scroll plate 112 from air entry It is compressed in the crescent confined space of formation, the gas for forming high temperature and pressure is arranged from exhaust outlet to be discharged, and air is in dynamic vortex Pressure between disk 111 and fixed scroll 112 between compression process middle pump body increases, i.e., the described orbiter 111 and quiet vortex Pressure between disk 112 increases, and orbiter 111 and fixed scroll 112 can be deformed, and due to elastic component and flying height 13 setting that is to say 111 He of orbiter so that orbiter 111 can move in the circumferential relative to fixed scroll 112 Pump housing gap between fixed scroll 112 is absorbed the deformation for neutralizing the pump housing by pump housing gap, and then effectively prevents the pump housing The problem of causing the seal member overcompression between orbiter 111 and fixed scroll 112 to be worn after heat preservation deformation, is guaranteeing to move The reliability and service life of sealing element are improved under the premise of sealing between scroll plate 111 and fixed scroll 112.While first Pass through grease lubrication, the available good lubrication of compressed spring 14 in bearing 151 or second bearing 172.

It optionally, is interference fit between the eccentric shaft 122 and the second bearing 172；The second bearing 172 is logical It crosses the second cover board 19 to be fixed in the second bearing hole 171, second cover board 19 passes through screw and the orbiter 111 It is fixedly connected, further, the outer ring of the second bearing 172 is fixed on the second bearing hole 171 by the second cover board 19 It is interior, while the eccentric shaft 122 of the anti-rotation crankshaft 12 and the inner ring of the second bearing 172 are interference fitted；The shaft body Clearance fit between 121 and the first bearing 151, the specific first bearing 151 are fixed on institute by the first cover board 18 It states in first axle bearing bore 15, first cover board 18 is fixedly connected by screw with the shell 1；Preferably, the first axle 151 outer ring is held to be fixed in the first axle bearing bore 15 by the first cover board 18, the inner ring of the first bearing 151 with it is described 121 clearance fit of shaft body.In this way when carrying out pump head assembly, first fixed scroll 112 is fixed on the shell 1, then Orbiter 111 is engaged with the fixed scroll 112, is being to be fixedly connected with bearing block 17 with orbiter 111 with screw, Then second bearing 172 is fixed in second bearing hole 171 using the second cover board 19, then makes eccentric shaft 122 and the second axis Hold 172 interference fits, then first axle bearing bore 15 install first bearing 151, and by the first cover board 18 to first bearing 151 into Row is fixed, and is inserted into first bearing 151 and 151 clearance fit of first bearing, completion assembly by shaft body 121.

As shown in figure 3, the shaft body 121 is equipped with the shaft shoulder 113, the flying height 13 is the shaft shoulder 113 and the Gap between one bearing 151, original state is since compressed spring 14 gives described 12 1 elastic force of anti-rotation crankshaft, and elastic force is by moving Scroll plate 111 is towards fixed scroll 112, therefore the gap between the shaft shoulder 113 and the first bearing 151 is maximum, when pump housing work When making internal pressure increase, pressure overcomes spring force, makes anti-rotation crankshaft 12 by fixed scroll 112 towards fixed scroll 112 Direction it is mobile, therefore flying height 13 becomes smaller, and then the pump housing gap between orbiter 111 and fixed scroll 112 increases.

Embodiment two

The present embodiment and the technical solution of embodiment one are substantially the same, and the main distinction is, are floated described in the present embodiment Dynamic gap 13 is that the eccentric shaft 122 is formed with the scroll plate component 11, that is to say the eccentric shaft 122 and the bearing The flying height 13 is formed between seat 17；Specifically, the flying height 13 is the shaft shoulder 113 on the anti-rotation crankshaft 12 With the gap between second bearing 172, the elastic component is compressed spring 14, and one end of the compressed spring 14 is fixed on described On bearing block 17, the other end is fixed on the eccentric shaft 122；Since compressed spring 14 is needed to the anti-rotation crankshaft 12 1 A elastic force towards 111 direction of orbiter, therefore 14 original state of compressed spring is in tensional state；Preferably, institute Eccentric shaft 122 is stated equipped with blind hole 124, one end of the compressed spring 14 is fixed on the bearing block 17, and the other end is fixed In the inner bottom wall of the blind hole 124.

It optionally, is clearance fit between eccentric shaft 122 described in the present embodiment and second bearing 172, with described first It is interference fit between bearing 151；In this way when carrying out pump head assembly, first bearing 151 is first mounted on first axle bearing bore 15 It is interior, then first bearing 151 is fixed by the first cover board 18, then matches shaft body 121 and 151 interference of first bearing It closes, then second bearing 172 is fixed in second bearing hole 171, and be fixed by the second cover board 19, by eccentric shaft 122 With 172 clearance fit of second bearing；Then it reuses screw orbiter 111 and bearing block 17 link together, then will Fixed scroll 112 is fixed on the shell 1, and engages with orbiter 111.

Embodiment three

As shown in Figures 5 to 7, the pump head for scroll air compressor provided in this embodiment include shell 1 with And scroll plate component 11, anti-rotation crank throw week and elastic component in the shell 1, the scroll plate component 11 includes mutual The orbiter 111 and fixed scroll 112 of cooperation, the fixed scroll 112 are fixed on the shell 1, the orbiter 111 are equipped with bearing block 17, and the flying height 13, the bullet are formed between the bearing block 17 and the orbiter 111 Property part be set between the bearing block 17 and the orbiter 111.

Elastic component is in compressive state in the initial state, provides one by orbiter 111 for the orbiter 111 Towards the elastic force of fixed scroll 112, the bearing block 17 and the described and orbiter 111 that the elastic force that elastic component provides makes Between keep a maximum flying height 13, when orbiter 111 and 112 compressed air internal pressure of fixed scroll increase When, the pressure opposite with elastic component elastic force by one of orbiter 111, the bearing block 17 and the orbiter at this time The flying height 13 formed between 111 becomes smaller, and the pump housing gap between orbiter 111 and fixed scroll 112 increases, due to dynamic Scroll plate 111 can between bearing block 17 and fixed scroll 112 axial floating, therefore can absorb and neutralize orbiter 111 and fixed scroll 112 deformation, effectively avoid the pump housing heat preservation deformation after cause seal member overcompression wear, guarantee The reliability of sealing element is improved under the premise of sealing.

The elastic component is compressed spring 14, and one end of the compressed spring 14 is resisted against on orbiter 111, the other end It is resisted against on the bearing block 17；It further include step pin 16, one end of the compressed spring 14 is resisted against the orbiter 111 On, the other end is connected by step pin 16 with the bearing block 17；As shown in Figures 5 to 7, the bearing block 17 is equipped with first Pin hole 173, the orbiter 111 are equipped with the second pin hole 113, and one end of the step pin 16 is fixed on first pin hole In 173, the other end and 113 clearance fit of the second pin hole, one end of the compressed spring 14 is socketed in the step pin 16 On, the other end is resisted against in the inner bottom wall of second pin hole 113.Preferably, in the bearing block 17 and the orbiter It is equipped with multiple groups compressed spring 14 between 111, and then sets on the bearing block 17 that there are three the first pin holes 173.

Example IV

A kind of scroll air compressor is present embodiments provided, including pump head described in any of the above-described embodiment, wherein institute Stating scroll air compressor further includes driving motor, and the driving motor is equipped with drive shaft, the drive shaft and the pump head Interior scroll plate component 11 is rotatablely connected.

Wherein scroll air compressor includes driving motor, mounting base and pump head, the driving motor and the pump head It is each attached on the mounting base；Orbiter 111,112 bearing block 17 of fixed scroll and anti-rotation crankshaft are equipped in pump head 12, the driving motor and drive shaft are sequentially connected, and drive shaft includes ontology and is eccentrically set on inclined in the shaft body 121 Heart pin；The pump head includes drive end bearing bracket, shell 1 and rear end cap, and the fixed scroll 112 is fixed by screws on shell 1, institute It is identical as the eccentricity of the drive shaft to state anti-rotation crankshaft 12, for limiting 111 rotation of orbiter, makes the dynamic whirlpool Capstan 111 is merely able to do eccentric rotary motion under the drive of drive shaft；Optionally, the anti-rotation crankshaft of multiple groups is equipped in pump head 12, it can guarantee the equilibrium that do not stress in pump head in this way, the rear end cap is equipped with air inlet pipe, the air inlet pipe and the quiet vortex The compression chamber connection formed between disk 112 and orbiter 111.In the screw compressor course of work, passed through by driving motor Drive shaft driving orbiter 111 does revolution translation, and orbiter 111 and the intermeshing of fixed scroll 112 are to form crescent moon Shape compression chamber, as air enters compression chamber by air intake duct, the work of orbiter 111 continues revolution and is translatable and remains good Meshing state, compression chamber constantly elapses to center, and volume constantly reduces, and cavity internal pressure constantly rises；Make a reservation for when compression reaches When compression ratio, pressure-air is discharged by the center exhaust outlet of fixed scroll 112 by exhaust valve.

In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term " on ", "lower" To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage Solution is limitations of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as indicating Or imply relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connection ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be direct connection, can also by intermediary indirect communication, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' " contains Justice is two or more.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (19)

1. a kind of pump head for scroll air compressor, it is characterised in that: including shell (1) and be set to the shell (1) Interior scroll plate component (11), anti-rotation crankshaft (12) and elastic component, one end and shell (1) of the anti-rotation crankshaft (12) turn Dynamic connection, the other end are rotatedly connected with the scroll plate component (11), and the anti-rotation crank throw is for preventing the scroll plate group Part (11) rotation；It is formed in the pump head flying height (13), the elastic component is used to mention for the scroll plate component (11) For an elastic force, the scroll plate component (11) is in elastic force and the pump head along the anti-rotation crankshaft under the action of pressure (12) axial movement, to increase or reduce the flying height (13).

2. the pump head according to claim 1 for scroll air compressor, it is characterised in that: the anti-rotation crankshaft (12) it is formed between the shell (1) or the scroll plate component (11) flying height (13), the anti-rotation crankshaft (12) one end is fixedly connected with one in shell (1) and scroll plate component (11), the anti-rotation crankshaft (12) it is another End is connect with another in shell (1) and scroll plate component (11) by elastic component, and the elastic component is used to prevent certainly to be described Turn crankshaft (12) and provides one along axial elastic force.

3. the pump head according to claim 2 for scroll air compressor, it is characterised in that: the anti-rotation crankshaft It (12) include shaft body (121) and the eccentric shaft (122) being eccentrically set on the shaft body (121), the shaft body (121) It is rotatablely connected with the shell (1), the eccentric shaft (122) and the scroll plate component (11) are rotatablely connected.

4. the pump head according to claim 3 for scroll air compressor, it is characterised in that: the shaft body (121) It is connect by elastic component with the shell (1), the eccentric shaft (122) and the scroll plate component (11) are rotatablely connected, described The flying height (13) are formed between shaft body (121) and the shell (1).

5. the pump head according to claim 4 for scroll air compressor, it is characterised in that: the elastic component is compression One end of spring (14), the compressed spring (14) is resisted against on the shell (1), and the other end is resisted against the shaft body (121) on.

6. the pump head according to claim 5 for scroll air compressor, it is characterised in that: the shaft body (121) It is equipped with blind hole (124), one end of the compressed spring (14) is resisted against on the shell (1), and the other end is resisted against described blind In the inner bottom wall in hole (124).

7. the pump head according to claim 6 for scroll air compressor, it is characterised in that: set on the shell (1) Have step pin (16), for an end cap of the compressed spring (14) on the step pin (16), the other end is resisted against the blind hole (124) in inner bottom wall.

8. the pump head according to claim 7 for scroll air compressor, it is characterised in that: set on the shell (1) Have first axle bearing bore (15), is equipped with first bearing (151) in the first axle bearing bore (15), the shaft body (121) and institute It states first bearing (151) to be rotatably assorted, the step pin (16) is set in the first axle bearing bore (15).

9. the pump head according to claim 8 for scroll air compressor, it is characterised in that: the shaft body (121) Further include the shaft shoulder (123), forms the flying height (13) between the shaft shoulder (123) and the first bearing (151).

10. the pump head according to claim 3 for scroll air compressor, it is characterised in that: the shaft body (121) It is rotatablely connected with the shell (1), the eccentric shaft (122) is connected by elastic component with the scroll plate component (11), described The flying height (13) are formed between eccentric shaft (122) and the scroll plate component (11).

11. the pump head according to claim 10 for scroll air compressor, it is characterised in that: the scroll plate component (11) bearing block (17) are equipped with, the bearing block (17) is equipped with second bearing hole (171), the second bearing hole (171) Interior to be equipped with second bearing (172), the eccentric shaft (122) and the second bearing (172) are rotatablely connected, the eccentric shaft (122) flying height (13) are formed between the shaft shoulder (123) on and the second bearing (172).

12. the pump head according to claim 11 for scroll air compressor, it is characterised in that: the elastic component is pressure One end of contracting spring (14), the compressed spring (14) is fixed on the bearing block (17), and the other end is fixed on the bias On axis (122).

13. the pump head according to claim 12 for scroll air compressor, it is characterised in that: the eccentric shaft (122) blind hole (124) are equipped with, one end of the compressed spring (14) is fixed on the bearing block (17), and the other end is fixed In the inner bottom wall of the blind hole (124).

14. the pump head according to claim 1 for scroll air compressor, it is characterised in that: the scroll plate component It (11) include mutually matched orbiter (111) and fixed scroll (112), the fixed scroll (112) is fixed on the shell On body (1), the orbiter (111) is equipped with bearing block (17), the bearing block (17) and the orbiter (111) it Between formed the flying height (13), the elastic component be set between the bearing block (17) and the orbiter (111).

15. the pump head according to claim 14 for scroll air compressor, it is characterised in that: the elastic component is pressure One end of contracting spring (14), the compressed spring (14) is resisted against on orbiter (111), and the other end is resisted against the bearing block (17) on.

16. the pump head according to claim 15 for scroll air compressor, it is characterised in that: further include step pin (16), one end of the compressed spring (14) is resisted against on the orbiter (111), and the other end passes through step pin (16) and institute Bearing block (17) are stated to be connected.

17. the pump head according to claim 16 for scroll air compressor, it is characterised in that: the bearing block (17) It is equipped with the first pin hole (173), the orbiter (111) is equipped with the second pin hole (113), one end of the step pin (16) It is fixed in first pin hole (173), the other end and the second pin hole (113) clearance fit, the compressed spring (14) One end be socketed on the step pin (16), the other end is resisted against in the inner bottom wall of second pin hole (113).

18. a kind of scroll air compressor, it is characterised in that: including the described in any item pump heads of such as claim 1 to 17.

19. scroll air compressor according to claim 18, it is characterised in that: it further include driving motor, the driving Motor is equipped with drive shaft, and the scroll plate component (11) in the drive shaft and the pump head is rotatablely connected.