CN205047484U - Drive arrangement and compressor - Google Patents

Drive arrangement and compressor Download PDF

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Publication number
CN205047484U
CN205047484U CN201520805060.0U CN201520805060U CN205047484U CN 205047484 U CN205047484 U CN 205047484U CN 201520805060 U CN201520805060 U CN 201520805060U CN 205047484 U CN205047484 U CN 205047484U
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China
Prior art keywords
slide rail
drive unit
disk
drive
slide
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Application number
CN201520805060.0U
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Chinese (zh)
Inventor
张竞
钟瑞兴
张治平
李宏波
蒋楠
谢蓉
蒋彩云
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201520805060.0U priority Critical patent/CN205047484U/en
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Abstract

The utility model relates to a drive arrangement, include: slewing mechanism, slide rail, slider, guide arm and guiding mechanism, wherein the slide rail is arc, and slewing mechanism includes drive shaft and connecting piece, and the slide rail is connected with the drive shaft through the connecting piece and can rotates down in the drive shaft drive, setting that the centre of a circle of slide rail and the axis of drive shaft deviate mutually, guide arm slidable sets up in guiding mechanism, the slider is connected with the slide rail and is restricted and slide in following the slide rail, slider and rotatable being connected of guide arm, and through rotating the slide rail, the slider can drive the guide arm and be reciprocating motion in guiding mechanism. In this application, owing to for the face contact between each moving part who mutually supports, can effectively slow down the wearing and tearing between each part, this drive arrangement's life has been increased, this drive arrangement simple structure, the transmission is accurate fast, can drive adjustable diffuser and make the adjustment to diffuser gas channel's size is quick accurate, has effectively avoided " surge " the emergence of phenomenon of compressor.

Description

A kind of drive unit and compressor
Technical field
The utility model relates to Compressor Technology, relates more specifically to a kind of compressor drive unit.
Background technique
Centrifugal compressor is in running, and when load reduces, when in compressor inner flow passage, gas flow obviously reduces, air-flow in runner, serious deterioration can occur and occur rotating the phenomenon departed from.When forming saltant type stall, can there is serious deterioration in centrifugal compressor internal flow state, cause gas backstreaming.This periodic gas backstreaming can cause centrifugal compressor system that circumferential low frequency significantly oscillatory occurences occurs, i.e. " surge ".
In order to avoid there is " surge ", widen the range of operation of compressor simultaneously, existing centrifugal compressor mainly utilizes this device of adjustable diffuser type, when the operating mode of small flow, by reducing diffuser intake width of flow path, increase this place's gas flow rate, thus gas discharge is prevented gas backstreaming, avoid surge occurs.The drive unit scheme of adjustable diffuser type has multiple, and one of them is cammingly adjustable diffuser type drive unit.In cammingly adjustable diffuser type drive unit, guide rod and adjustable diffuser type are locked by locking nut, capacity eccentric bearing, guide rod (guide rod is contacted with capacity eccentric bearing by the effect of spring) formation cam mechanism.Its driving principle is: when capacity eccentric bearing rotates, profile and the spring acting in conjunction of capacity eccentric bearing force guide rod axially reciprocating, and then controls the aperture of adjustable diffuser type.
For existing cammingly adjustable diffuser type drive unit, mainly there is following problem in it: 1. capacity eccentric bearing and guide rod are that linear contact lay easily weares and teares; 2. guide rod is contacted with capacity eccentric bearing by the effect of spring, and spring is subject to periodic thrust load, and under periodic Cyclic Load, spring easily produces fatigue ruption, finally causes drive unit to lose efficacy; 3. because assembly space is limited, existing adjustable diffuser type drive unit more complicated, affects the efficiency of assembling of workman.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of wearing and tearing that can effectively slow down between each parts, and then adds the drive unit in working life.
Another object of the present utility model is to provide a kind of size of adjustable diffuser type to Diffuser gas flow that can drive to adjust fast and accurately, effectively can avoid the drive unit of the generation of compressor " surge " phenomenon.
According to first aspect of the present utility model, a kind of drive unit is provided, it is characterized in that, comprise: rotating mechanism, slide rail, slide block, guide rod and guide mechanism, wherein slide rail is circular arc, rotating mechanism comprises live axle and link, and slide rail to be connected with live axle by link and can to rotate under drive shaft, the setting that the center of circle of described slide rail and the axis of described live axle deviate; Described guide rod is slidably arranged in guide mechanism; Described slide block is connected with described slide rail and is restricted to and can only slide along described slide rail, the connection of described slide block and described rod being rotatable, and by rotating described slide rail, described slide block can drive described guide rod to move reciprocatingly in described guide mechanism.
Preferably, described link comprises the disk around described drive shaft turns, and described slide rail to be located on described disk and coaxially to arrange with described disk, and described live axle is connected the rotation driving described disk bias with described disk.
Preferably, the radial outside of described disk is provided with slide rail assembly department, and described slide rail is fixed on described disk by described slide rail assembly department.
Preferably, described disk is axially provided with stepped part, described stepped part forms slide rail assembly department.
Preferably, described slide rail and described disk overall processing form.
Preferably, the arc round angle α that described slide rail is corresponding is set to 90 °-120 °.
Preferably, described slide block is in T shape, comprises head and joint; Slide rail comprises sliding cavity, sliding cavity is provided with limited part, the head of described slide block is slidably arranged in described sliding cavity, and described limited part can not depart from from sliding cavity for limiting described head, and described joint stretches out described slide rail by the opening on sliding cavity and is connected with guide rod.
Preferably, between described slide rail and described slide block be Spielpassung.
Preferably, the matching gap of described Spielpassung is 0.25-0.35mm.
Preferably, described slide rail is split-type structural, and it is connected to form by half rail that two are separated.
Preferably, high-abrasive material is set on the inwall of described slide rail and/or on the surface of matching with described slide rail of slide block.
Preferably, described high-abrasive material is teflon.
According to second aspect of the present utility model, a kind of compressor being provided with described drive unit is provided, it is characterized in that, drive unit described at least one is circumferentially set in described compressor housing, for driving adjustable diffuser type.
Preferably, the number of described drive unit is 2-6.
In the application, owing to being face contact between each moving element of cooperatively interacting, effectively can slowing down the wearing and tearing between each parts, add the working life of this drive unit; This driving device structure is simple, and transmission fast accurate, can drive the size of adjustable diffuser type to Diffuser gas flow to adjust fast and accurately, effectively prevent the generation of compressor " surge " phenomenon.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the utility model embodiment, above-mentioned and other objects of the present utility model, feature and advantage will be more clear, in the accompanying drawings:
Fig. 1 is the overall structure schematic diagram of drive unit in the application;
Fig. 2 is the structural representation of disk in the application;
Fig. 3 is the structural representation of slide rail in the application;
Fig. 4 is the structural representation of slide block in the application.
Embodiment
Hereinafter with reference to accompanying drawing, various embodiment of the present utility model is described in more detail.In various figures, identical element adopts same or similar reference character to represent.For the sake of clarity, the various piece in accompanying drawing is not drawn in proportion.
Drive unit in the application can be used for any applicable by driven object, is not limited only to compressor, is described below with its example that is applied as on the compressor.
As Figure 1-4, a kind of drive unit, comprise: rotating mechanism, slide rail 2, slide block 3, guide rod 4 and guide mechanism 6, wherein slide rail 2 is in circular arc, rotating mechanism comprises live axle 5 and link, slide rail 2 to be connected with live axle 5 by link and can to rotate under live axle 5 drives, the setting that the center of circle of described slide rail 2 and the axis of described live axle 5 deviate; Described guide rod 4 is slidably arranged in guide mechanism 6; Described slide block 3 is connected with described slide rail 2 and is restricted to and can only slide along described slide rail 2, described slide block 3 is connected with described guide rod 4 is rotating, by rotating described slide rail 2, described slide block 3 can drive described guide rod 4 to move reciprocatingly in described guide mechanism 6; According to the excursion of adjustable diffuser guide vane aperture, the central angle of described slide rail 2 correspondence is 90 °-120 °.
Described link can be connecting rod, and connecting rod two ends are fixedly connected with slide rail 2 with live axle 5 respectively.As one preferably mode of execution, described link comprises the disk 1 rotated around described live axle 5, described slide rail 2 to be located on described disk 1 and coaxially to arrange with described disk 1, one end of described live axle 5 is connected the rotation driving described disk 1 bias with described disk 1, the other end of described live axle 5 is connected with power mechanism, such as be connected with stepper motor, for driving described disk 1.The axle center of described live axle 5 and the distance of center circle of described slide rail 2 are from being eccentric distance e, and the minimum width that described eccentric distance e allows according to Diffuser gas flow determines.The exradius of described disk 1 is 50-80mm, is preferably 60mm.
Described slide rail 2 also can form by overall processing with described disk 1, can reduce the processing of described disk 1 being installed the tapped hole required for described slide rail 2 like this, improve the reliability of mechanism kinematic simultaneously.
The radial outside of described disk 1 is provided with slide rail assembly department 11, and described slide rail 2 is fixed on described disk 1 by described slide rail assembly department 11.Preferably, described disk 1 is axially provided with stepped part, described stepped part forms slide rail assembly department 11.
Described slide block 3 is in T shape, comprises head 31 and joint 32; Slide rail 2 comprises sliding cavity 21, sliding cavity 21 is provided with limited part 211, the head 31 of described slide block 3 is slidably arranged in described sliding cavity 21, described limited part 211 can not depart from from sliding cavity 21 for limiting described head 31, and described joint 32 stretches out described slide rail 2 by the opening on sliding cavity 21 and is connected with guide rod 4.Be Spielpassung between described slide rail 2 and described slide block 3.Preferably, the matching gap of described Spielpassung is 0.25-0.35mm.
Preferably, described slide rail 2 is split-type structural, and it is connected to form by half rail that two are separated.This structure is convenient to the processing of sliding cavity 21 on the one hand, makes described slide rail 2 be more prone to be fixed on described rotating mechanism on the other hand, and is conducive to the assembling of described slide block 3 and guide rod 4.
In order to increase the wear resistance between slide rail 2 and slide block 3 fitting surface, also can arrange high-abrasive material on the inwall of described slide rail 2 and/or on the surface of matching with described slide rail 2 of slide block 3, described high-abrasive material is preferably teflon.
When drive unit in the application is applied, can at least one this drive unit be circumferentially set in compressor housing, such as can this drive units some be circumferentially set uniformly, adjust fast and accurately according to the size of change to Diffuser gas flow of throughput and load to drive adjustable diffuser type; Simultaneously in order to avoid drive unit too much causes complex structure, the number of this drive unit is preferably 2-6, is more preferably 3-4.
In the application, owing to being face contact between each moving element of cooperatively interacting, effectively can slowing down the wearing and tearing between each parts, add the working life of this drive unit; Simultaneously, this driving device structure is simple, transmission fast accurate, can drive adjustable diffuser type to adjust fast and accurately according to the size of change to Diffuser gas flow of throughput and load, effectively prevent the generation of compressor " surge " phenomenon in running.
Should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or control panel, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Last it is noted that obviously, above-described embodiment is only for the utility model example is clearly described, and the restriction not to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of amplifying out or variation be still among protection domain of the present utility model.

Claims (14)

1. a drive unit, it is characterized in that, comprise: rotating mechanism, slide rail (2), slide block (3), guide rod (4) and guide mechanism (6), wherein slide rail (2) is in circular arc, rotating mechanism comprises live axle (5) and link, slide rail (2) to be connected with live axle (5) by link and can to rotate under live axle (5) drive, the setting that the center of circle of described slide rail (2) and the axis of described live axle (5) deviate; Described guide rod (4) is slidably arranged in guide mechanism (6); Described slide block (3) is connected with described slide rail (2) and is restricted to and can only slide along described slide rail (2), described slide block (3) is connected with described guide rod (4) is rotating, by rotating described slide rail (2), described slide block (3) can drive described guide rod (4) to move reciprocatingly in described guide mechanism (6).
2. drive unit according to claim 1, it is characterized in that, described link comprises the disk (1) rotated around described live axle (5), described slide rail (2) is located at described disk (1) and goes up and coaxially arrange with described disk (1), and described live axle (5) is connected the rotation driving described disk (1) eccentric with described disk (1).
3. drive unit according to claim 2, it is characterized in that, the radial outside of described disk (1) is provided with slide rail assembly department (11), and described slide rail (2) is fixed on described disk (1) by described slide rail assembly department (11).
4. drive unit according to claim 3, is characterized in that, (1) is axially provided with stepped part with described disk, and described stepped part forms slide rail assembly department (11).
5. drive unit according to claim 2, is characterized in that, described slide rail (2) and described disk (1) overall processing form.
6. drive unit according to claim 1, is characterized in that, the arc round angle α that described slide rail (2) is corresponding is set to 90 °-120 °.
7. drive unit according to claim 1, is characterized in that, described slide block (3) is in T shape, comprises head (31) and joint (32); Slide rail (2) comprises sliding cavity (21), sliding cavity (21) is provided with limited part (211), the head (31) of described slide block (3) is slidably arranged in described sliding cavity (21), described limited part (211) can not depart from from sliding cavity (21) for limiting described head (31), and described joint (32) stretches out described slide rail (2) by the opening on sliding cavity (21) and is connected with guide rod (4).
8. drive unit according to claim 7, is characterized in that, is Spielpassung between described slide rail (2) and described slide block (3).
9. drive unit according to claim 8, is characterized in that, the matching gap of described Spielpassung is 0.25-0.35mm.
10. drive unit according to claim 7, is characterized in that, described slide rail (2) is split-type structural, and it is connected to form by half rail that two are separated.
11. drive units according to claim 7, is characterized in that, on the inwall of described slide rail (2) and/or on the surface of matching with described slide rail (2) of slide block (3), arrange high-abrasive material.
12. drive units according to claim 11, is characterized in that, described high-abrasive material is teflon.
13. 1 kinds of compressors being provided with the drive unit described in any one of claim 1-12, is characterized in that, in described compressor housing, circumferentially arrange drive unit described at least one, for driving adjustable diffuser type.
14. compressors according to claim 13, is characterized in that, the number of described drive unit is 2-6.
CN201520805060.0U 2015-10-15 2015-10-15 Drive arrangement and compressor Active CN205047484U (en)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240306A (en) * 2015-10-15 2016-01-13 珠海格力电器股份有限公司 Drive device and compressor
CN109578340A (en) * 2018-12-19 2019-04-05 西安交通大学 A kind of axial flow compressor change groove depth formula casing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240306A (en) * 2015-10-15 2016-01-13 珠海格力电器股份有限公司 Drive device and compressor
WO2017063575A1 (en) * 2015-10-15 2017-04-20 珠海格力电器股份有限公司 Driving apparatus and compressor
CN105240306B (en) * 2015-10-15 2018-01-02 珠海格力电器股份有限公司 A kind of drive device and compressor
CN109578340A (en) * 2018-12-19 2019-04-05 西安交通大学 A kind of axial flow compressor change groove depth formula casing

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