CN209308959U - Movable scroll component, compression assembly and scroll compressor - Google Patents

Abstract

The present disclosure provides an orbiting scroll member, a compression assembly and a scroll compressor, wherein the orbiting scroll member includes an end plate; and an orbiting scroll blade formed at the first side of the end plate. The end plate has a body portion on which the orbiting scroll blade is formed and a flange portion extending radially outward from the body portion in a stepped manner with the body portion. According to the disclosure, through the structural arrangement of the movable scroll part, the oldham ring can be arranged between the fixed scroll part and the movable scroll part, so that the size of a thrust surface between an end plate of the movable scroll part and a main bearing seat is not limited by the oldham ring, and a larger space is provided for increasing the size of the thrust surface and the bearing radius.

Description

Dynamic vortex component, compression assembly and screw compressor

Technical field

This disclosure relates to Compressor Technology field, particularly, be related to the dynamic vortex component being applied in screw compressor and Compression assembly and screw compressor including such dynamic vortex component.

Background technique

The content of this part provides only background information relevant to the disclosure, may not constitute the prior art.

Screw compressor is freezed or is heated commonly used to compression refrigerant.Wherein, for compressing refrigerant Component is commonly known as compression mechanism (compression assembly), and compression mechanism may include that can be engaged with each other to form multiple compression chambers Determine vortex component and dynamic vortex component.Dynamic vortex component can carry out translation rotation relative to determine vortex component to realize convection current Enter the compression of the fluid in compression chamber.The translation rotation of dynamic vortex component is generally realized by cross slip-ring.

In some screw compressors with axial elasticity design feature, cross slip-ring is typically mounted on dynamic vortex component End plate lower section.However, such structure arrangement easily influences effectively contacting between the end plate and main bearing seat of dynamic vortex component Face (also referred to as thrust surface) influences oil film on thrust surface for example, the area and/or outer diameter size to thrust surface cause to limit Continuously, to reduce the performance and operational reliability of screw compressor.In addition, thrust surface area and/or outer diameter it is limited Can bring can not effectively avoid the problem that the problem of toppling and also bring along vortex noise and abrasion of dynamic vortex component.Separately Outside, in the art, there is also dynamic vortex components can disadvantageously result in dynamic vortex component weight when ensuring that its thrust surface is enough It is excessive and the problem of influence in compressor using space.

Accordingly, it is desirable to provide a kind of improved structure is at least one of to mitigate or eliminate the above problem.

Utility model content

The disclosure is designed to provide a kind of improved dynamic vortex component, the compression assembly including such dynamic vortex component And the screw compressor including this compression assembly, to realize at least one of following purposes: reducing the weight of dynamic vortex component Amount, the size for increasing thrust surface and bearing radius, reduce the risk of toppling of dynamic vortex component, reduce noise, mitigate thrust surface On friction, increase design space, so that structure is more compact, improves the performance of screw compressor and improve its reliability etc..

According to one aspect of the disclosure, a kind of dynamic vortex component, including end plate are provided；It is formed in the of the end plate Dynamic vortex blade at one side, wherein the end plate has body part and flange part, is formed on the body part described dynamic Volution blade, the flange part are extended radially outwardly in the form of forming ladder with the body part from the body part.

According to one embodiment, at the first side of the end plate, the flange part is lower than the body part, At the second side opposite with the first side of the end plate, the flange part is flushed with the body part.

According to one embodiment, one or more depressed sections are formed on the flange part.

According to one embodiment, it is formed on the flange part adjacent with the depressed section one or more convex Portion.

According to one embodiment, receiving channel is formed on the flange part.

According to one embodiment, the receiving channel is formed through the flange part；Or the receiving channel is formed as Blind slot.

According to one embodiment, the receiving channel is arranged at the protrusion being formed on the flange part.

A kind of compression assembly another aspect of the present disclosure provides, the compression assembly include nibbling each other It closes to form the determine vortex component and dynamic vortex component of multiple compression chambers, wherein the dynamic vortex component is above-mentioned dynamic vortex Component.

According to one embodiment, the compression assembly further includes being arranged in the determine vortex component and the dynamic vortex portion Cross slip-ring between part.

According to one embodiment, the cross slip-ring includes the receiving channel for being configured to be fitted on the dynamic vortex component In protrusion.

According to one embodiment, the cross slip-ring further includes the protrusion being fitted in the keyway of the determine vortex component Portion.

According to the another aspect of the disclosure, a kind of screw compressor is provided, the screw compressor includes above-mentioned Compression assembly.

According to the disclosure, by the structure setting of dynamic vortex component, cross slip-ring can be arranged in determine vortex component with Between dynamic vortex component, so that the size of the thrust surface between the end plate and main bearing seat of dynamic vortex component is no longer influenced by cross and slides The limitation of ring, to provide bigger space to increase the size of thrust surface and bearing radius.It is used for due to that can increase The bearing radius for resisting tilting moment, can be effectively reduced required thrust power, and reduce required back pressure in turn, simultaneously The risk of toppling of dynamic vortex component can be reduced, noise is reduced, friction and determine vortex component and dynamic whirlpool on mitigation thrust surface The abrasion between component is revolved, improves the performance of screw compressor and improves its reliability.Moreover, the disclosure can more effective land productivity With the space (such as radial space) of screw compressor, increase the structure design space of cross slip-ring, and can be vortexed The structure of compressor in a longitudinal direction is more compact and effectively reduces its weight while ensuring dynamic vortex end plate intensity.

Detailed description of the invention

By description referring to the drawings, the feature and advantage of one or several embodiments of the disclosure will become more Add and is readily appreciated that.Attached drawing as described herein is only to be not intended to limit the model of the disclosure in any way for purpose of explanation It encloses, attached drawing is not necessarily drawn to scale, and some features may be amplified, reduce or carry out angle adjustment, specific to show The details of component.In the accompanying drawings:

Fig. 1 shows the longitudinal profile of illustrative screw compressor known to one kind；

Fig. 2 a to Fig. 2 c respectively illustrates determine vortex component, dynamic vortex component and main shaft in the screw compressor of Fig. 1 Hold the stereoscopic schematic diagram of seat；

Fig. 3 shows the stereoscopic schematic diagram of the dynamic vortex component in Fig. 2 b from another angle；

Fig. 4 shows the exemplary structure schematic diagram of cross slip-ring；

Fig. 5 is the partial structurtes enlarged diagram of the screw compressor of Fig. 1；

Fig. 6 shows the stereoscopic schematic diagram of dynamic vortex component in accordance with one embodiment of the present disclosure；

Fig. 7 shows the stereoscopic schematic diagram of the dynamic vortex component in Fig. 6 from another angle；And

Fig. 8 shows the stereoscopic schematic diagram of dynamic vortex component in accordance with another embodiment of the present disclosure.

Specific embodiment

The description of each embodiment of the disclosure is only exemplary below, and be definitely not to the disclosure and its application or The limitation of usage.It adopts in various figures and identical component is denoted by the same reference numerals, therefore the construction of same parts Repeated description will not be done.

In the disclosure, it is the convenience of description, whirlpool can be determined along the axial floating slightly moved with determine vortex component It is described for the scroll compressor structure of rotation type to according to each structure of the disclosure.It is understood that this public affairs It the structure opened and opens one's minds and is equally applicable to other types of screw compressor (for example, scroll compression of the tooth top with sealing ring Machine).

Fig. 1 is combined to summarize the basic structure and related work principle of screw compressor first below.Fig. 1 is shown A kind of longitudinal profile of known illustrative screw compressor.As shown in Figure 1, screw compressor generally may include shell 110, the top cover 112 of 110 one end of shell, the bottom cover 114 for the other end that shell 110 is arranged in and setting are set in top cover The partition 116 of high-pressure side and low-pressure side is separated between 112 and shell 110 and by the inner space of screw compressor.At this In example, the space between partition 116 and top cover 112 constitutes high-pressure side, and between partition 116, shell 110 and bottom cover 114 Space constitute low-pressure side.Low-pressure side is provided with the inlet suction port (not shown) for sucking fluid, is provided in high-pressure side For the exhaust joint (not shown) of compressed fluid to be discharged.It has been can be set in shell 110 by determine vortex component 150 and has been moved Compression mechanism (also referred to as compression assembly), rotary shaft 130 and the horse for driving rotary shaft 130 that scroll element 160 is constituted Up to 120.It wherein, can between the determine vortex blade 156 of determine vortex component 150 and the dynamic vortex blade 166 of dynamic vortex component 160 To form a series of compression chambers, for being compressed to the working fluid (such as refrigerant) for entering compression chamber.

In general, being provided in the side opposite with determine vortex blade 156 is provided with of the end plate 154 of determine vortex component 150 Back pressure cavity 158.Back pressure cavity 158 passes through the axially extending through-hole (not shown) and one of compression chamber formed in end plate 154 (such as middle pressure chamber) is in fluid communication, to establish determine vortex component 150 towards the back pressure of 160 bias of dynamic vortex component.By It is supported in the side of dynamic vortex component 160 by main bearing seat 140, so can be effectively using the back pressure in back pressure cavity 158 Determine vortex component 150 and dynamic vortex component 160 are forced together.When the pressure in such as compression chamber is more than preset value, these Resultant force caused by pressure in compression chamber will be more than the back pressure that provides in back pressure cavity 158 so that determine vortex component 150 It moves upwards.At this point, the fluid in compression chamber will pass through the top of the determine vortex blade 156 of determine vortex component 150 and dynamic vortex The top of the dynamic vortex blade 166 in gap and dynamic vortex component 160 between the end plate 164 of component 160 and determine vortex component Clearance leakage between 150 end plate 154 realizes unloading to low-pressure side, to provide axial elasticity for screw compressor.

The first end of drive shaft 130 can be supported by the base bearing being arranged in main bearing seat 140, and drive shaft 130 first end extends in the hub 162 of dynamic vortex component 160.The first end of drive shaft 130 can be set Unloading bushing has can be set between eccentric crank pin 132 and the hub 162 of dynamic vortex component 160 in eccentric crank pin 132 142.Motor 120 can drive rotary shaft 130 to be rotated, and rotary shaft 130 can be served as a contrast by means of eccentric crank pin 132, unloading The hub 162 of set 142 and dynamic vortex component 160 is further driven to dynamic vortex component 160 and carries out relative to determine vortex component 150 Translation rotation (that is, the central axis of dynamic vortex component 160 revolves around the central axis of determine vortex component 150, but dynamic vortex portion Part 160 will not be rotated around the central axis of itself) to realize the compression to fluid.

The translation rotation of dynamic vortex component 160 can be realized by cross slip-ring 190.Fig. 4 shows cross slip-ring Exemplary structure schematic diagram.As shown in figure 4, cross slip-ring 190 can have annular base 196 and two pairs of protrusions 192, 194, the keyway 155 that a pair of protrusion (for example, 192) therein can be fitted respectively over determine vortex component 150 (please refers to figure In 2a), the receiving channel 165 that another pair protrusion (for example, 194) can be fitted respectively over dynamic vortex component 160 (please refers to figure In 2b).It is understood that in this example, cross slip-ring 190 is matched with determine vortex component 150 and dynamic vortex component 160 respectively It is fitted together and is arranged in below dynamic vortex component, therefore, two pairs of protrusions 192,194 are arranged in the phase of annular base 196 Ipsilateral (being seen as upside from Fig. 4 angle).But in other configurations, cross slip-ring 190 can respectively with dynamic vortex component and master Bearing block matched together, two pairs of protrusions 192,194 can be arranged in the two sides of annular base as a result,.Therefore, cross The structure of slip ring 190 is not limitation with structure as shown in Figure 4.

Contact surface between the end plate 164 and main bearing seat 140 of dynamic vortex component 160 is commonly referred to as thrust surface.It is being vortexed In the operational process of compressor, thrust surface is in addition to for example as between the end plate 164 of dynamic vortex component 160 and main bearing seat 140 Effectively supporting surface, provide effectively for the end plate 164 of dynamic vortex component 160 and the concerned contact surface of main bearing seat 140 Except the effects of lubrication, has the function of supporting dynamic vortex component 160 also to prevent it from toppling.As a result, in dynamic vortex portion Forming effective thrust surface also between the end plate 164 and main bearing seat 140 of part 160 and becoming screw compressor reliability service can not neglect Depending on one of factor.

A- Fig. 2 c and Fig. 5 referring further to Figure 2.Fig. 2 a to Fig. 2 c is respectively illustrated to be determined in the screw compressor of Fig. 1 The stereoscopic schematic diagram of scroll element 150, dynamic vortex component 160 and main bearing seat 140.Fig. 5 is the office of the screw compressor of Fig. 1 Portion's structure enlargement diagram basically illustrates determine vortex component 150, dynamic vortex component 160, cross slip-ring 190 and base bearing The relative positional relationship of seat 140.It can be seen that in the assembled condition in conjunction with these attached drawings, the annular base of cross slip-ring 190 196 can be located at 146 periphery of thrust surfaces of main bearing seat 140.A pair of protrusion 192 therein can be inserted into respectively determines whirlpool In two corresponding keyways 155 for revolving component 150, another pair protrusion 194 can be inserted into the two of dynamic vortex component 160 respectively In a corresponding receiving channel 165.Thus, it is possible to realize translation rotation of the dynamic vortex component 160 relative to determine vortex component 150.

The inventors discovered that the annular base 196 due to cross slip-ring 190 is arranged in the thrust surfaces of main bearing seat 140 146 periphery, therefore inevitably will limit the size and size of the thrust surfaces 146 of main bearing seat 140, it thus also can shadow The size of thrust surface between the end plate 164 and main bearing seat 140 of sound of movement scroll element 160.Due to inclining for dynamic vortex component 160 Thrust power F and the bearing radius covered on end plate 164 of the torque mainly by acting on dynamic vortex component 160 (is formed effectively only The radius on the surface of pushing surface) R both (such as product) offsets, if bearing radius R is smaller, need biggish thrust Power acts on the end plate 164 of dynamic vortex component 160, so as to tilting moment of the resistant function on dynamic vortex component 160.Such as This, it is also necessary to increase the back pressure in back pressure cavity to make thrust power become larger, therefore also will increase dynamic vortex component 160 and determine vortex Axial force between component 150.Moreover, if the thrust area of thrust surface is smaller, act on pressure on thrust surface compared with Greatly, it is easy to increase the abrasion of thrust surface.

However, can reduce institute if the thrust area of bearing radius R and/or thrust surface can be increased as much as possible The thrust power needed, therefore also can reduce required back pressure, it can not only more effectively resist what dynamic vortex component toppled in this way Risk, and can obtain further such as reducing noise, the abrasion for mitigating scroll element, simplify structure, reduce cost Beneficial effect, to further promote the Performance And Reliability of screw compressor.For this purpose, present inventors have proposed by cross slip-ring The improved technology design being arranged between determine vortex component and dynamic vortex component, and provide the improvement for such technical concept Dynamic vortex modular construction.Just Fig. 6-Fig. 8 is combined to do further to according to the dynamic vortex component and associated component of the disclosure below Explanation.

Fig. 6 shows the stereoscopic schematic diagram of dynamic vortex component 260 in accordance with one embodiment of the present disclosure.Fig. 7 is from another One angle shows the stereoscopic schematic diagram of the dynamic vortex component in Fig. 6.As shown in Figure 6 and Figure 7, according to the disclosure reality The dynamic vortex component 260 for applying mode may include end plate 264, the dynamic vortex blade at the first side for being formed in end plate 264 266 and the hub 262 that is formed at the second side opposite with first side of end plate 264 (however, it is to be appreciated that dynamic whirlpool Rotation component can also be alternatively arranged pelmatozoa and be driven with driven shaft).Wherein, end plate 264 can have body part 2642 With flange part 2646.Dynamic vortex blade 266 is formed on body part 2642.Flange part 2646 can be from body part 2642 along diameter To extending outwardly, and arranged in the form of forming ladder with body part 2642.Particularly, flange part and body part are in second side Face flushes at (lower surface), but at first side (upper surface), flange part is lower than body part, this allows to true Protect the weight for increasing thrust surface and reducing dynamic vortex end plate while the intensity for ensuring body part.In other words, it is formed with The upper surface of the flange part 2646 of the upper surface and adjacent body portion 2642 of the body part 2642 of dynamic vortex blade 266 is in different Horizontal plane.

By such structure setting, cross slip-ring can be arranged on the flange part 2646 of dynamic vortex component 260, so that The size of thrust surface between the end plate 264 and main bearing seat of dynamic vortex component 260 is no longer influenced by the limitation of cross slip-ring, thus Bigger space is provided to increase size and the bearing radius of thrust surface.Due to that can increase for resisting tilting moment Radius is supported, required thrust power can be effectively reduced, and reduce required back pressure in turn, so as to reduce dynamic vortex The risk of toppling of component reduces noise, mitigates the friction on thrust surface, improves the performance of screw compressor and improves it reliably Property.Moreover, such structure arrangement can more effectively utilize the radial space of screw compressor, the structure for increasing cross slip-ring is set Space is counted, and the structure of screw compressor in a longitudinal direction can be made more compact.

It could be formed with receiving channel 2645 on flange part 2646, to be equipped with the complementary protuberance portion of cross slip-ring.For example, connecing Slot 2645 of receiving may include symmetrically arranging with one another a pair of of receiving channel.As a result, for example, cross slip-ring can be configured to include point It is not arranged in two pairs of protrusions of the two sides up and down of its annular base, one pair of them protrusion is fitted on determine vortex component, and Another pair protrusion is fitted in the receiving channel 2645 of dynamic vortex component 260.To realize dynamic vortex portion by the cross slip-ring The translation rotation of part.According to the specific structure of the determine vortex component cooperated with dynamic vortex component 260 arrangement and screw compressor Corresponding construction design, cross slip-ring can use different structure type, herein not to determine vortex component and cross slip-ring and The structure of other associated components does concrete restriction.

Advantageously, one or more depressed sections 2648 can be formed on flange part 2646.Thus, it is possible to mitigate dynamic whirlpool The quality of component 260 is revolved, and the utilization rate for increasing radial space can be made, so that overall structure is more compact.

Optionally, as shown in fig. 7, receiving channel 2645 can be formed through flange part 2646.In this way, can be sliding for cross Ring provides bigger height space, can further decrease the pressure including determine vortex component, cross slip-ring and dynamic vortex component The longitudinal size of contracting component, and thus further decrease the overall dimensions of screw compressor.

Optionally, as shown in figure 8, receiving channel 2645 can be formed as the form of blind slot.In this way, dynamic vortex component 260 The surface of end 264 contacted with main bearing seat can be formed as continuous surface, so as to continuously stop with bigger Pushing surface improves lubrication, mitigates friction, reduces the risk that scroll element topples, and improves performance, improves reliability.

Present disclosure also relates to a kind of compression assembly, the compression assembly may include can be fitted to each other so as to formed be used for pair The determine vortex component for multiple compression chambers that working fluid is compressed and dynamic vortex component as described herein.The compression assembly is also It may include cross slip-ring.It is designed according to the structure of dynamic vortex component provided by the design concept of the disclosure and the disclosure, Determine vortex component can be changed accordingly according to the actual situation and modification, it can be using having feasible cross slip-ring knot Structure is perhaps provided new cross slip-ring structure design and can both be designed using existing structure or carry out part to dependency structure Change or adjustment, also can according to need and special supporting structure be provided.Screw compressor can not only be improved as a result, Performance, and increase the flexibility of application.

Present disclosure also relates to the screw compressors including compression assembly above-mentioned.As previously mentioned, according to the dynamic whirlpool of the disclosure The structure setting for revolving component, cross slip-ring can be arranged between determine vortex component and dynamic vortex component, can increase thrust The area and radius in face can increase structure design space and the space of cross slip-ring, can make screw compressor Vertical structure is more compact, can reduce the risk of toppling of dynamic vortex component, reduces noise, mitigates friction, improves scroll compression The performance of machine simultaneously improves its reliability.

Although the numerous embodiments of the disclosure have already been described in detail herein, it should be appreciated that, the disclosure is not limited to In the specific embodiment be described in detail and shown here, without departing from the spirit and scope of the disclosure, Ke Yiyou Those skilled in the art realizes other modifications and variant.Moreover, all modifications made on the basis of the disclosure and Variant is both fallen in the scope of the present disclosure.All components described herein can by component equivalent in other technologies Lai Instead of.

Claims (12)

1. a kind of dynamic vortex component, which is characterized in that the dynamic vortex component includes:

End plate；And

The dynamic vortex blade being formed at the first side of the end plate,

Wherein, the end plate has body part and flange part, is formed with the dynamic vortex blade, the flange on the body part Portion is extended radially outwardly in the form of forming ladder with the body part from the body part.

2. dynamic vortex component according to claim 1, wherein at the first side of the end plate, the flange Portion be lower than the body part, at the second side opposite with the first side of the end plate, the flange part with it is described Body part flushes.

3. dynamic vortex component according to claim 2, wherein be formed with one or more recessed portions on the flange part Point.

4. dynamic vortex component according to claim 3, wherein be formed on the flange part adjacent with the depressed section One or more protrusions.

5. dynamic vortex component according to any one of claims 1 to 4, wherein be formed with receiving on the flange part Slot.

6. dynamic vortex component according to claim 5, wherein

The receiving channel is formed through the flange part；Or

The receiving channel is formed as blind slot.

7. dynamic vortex component according to claim 5, wherein the receiving channel, which is arranged in, to be formed on the flange part At protrusion.

8. a kind of compression assembly, the compression assembly include can be engaged with each other with formed the determine vortex component of multiple compression chambers and Dynamic vortex component, which is characterized in that the dynamic vortex component is the dynamic vortex according to any one of claim 1 to 7 Component.

9. compression assembly according to claim 8, wherein the compression assembly further includes being arranged in the determine vortex component With the cross slip-ring between the dynamic vortex component.

10. compression assembly according to claim 9, wherein the cross slip-ring includes being configured to be fitted in the dynamic whirlpool Revolve the protrusion in the receiving channel on component.

11. compression assembly according to claim 10, wherein the cross slip-ring further includes being fitted in the determine vortex portion Protrusion in the keyway of part.

12. a kind of screw compressor, which is characterized in that the screw compressor includes according to any in claim 8 to 11 Compression assembly described in.