WO2016011777A1 - 离心式压缩机的调节结构及离心式压缩机 - Google Patents

离心式压缩机的调节结构及离心式压缩机 Download PDF

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Publication number
WO2016011777A1
WO2016011777A1 PCT/CN2014/095148 CN2014095148W WO2016011777A1 WO 2016011777 A1 WO2016011777 A1 WO 2016011777A1 CN 2014095148 W CN2014095148 W CN 2014095148W WO 2016011777 A1 WO2016011777 A1 WO 2016011777A1
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Prior art keywords
centrifugal compressor
driving
hole
slot
adjustment structure
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PCT/CN2014/095148
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English (en)
French (fr)
Inventor
蒋彩云
张治平
钟瑞兴
蒋楠
谢蓉
王宏兴
刘建飞
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Publication of WO2016011777A1 publication Critical patent/WO2016011777A1/zh
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable

Definitions

  • the invention relates to the technical field of household appliances, in particular to an adjustment structure of a centrifugal compressor and a centrifugal compressor.
  • a regulator is installed at the impeller outlet of the centrifugal compressor to form an adjustable section of the impeller outlet, and the outlet width of the impeller is adjusted according to the operation of the unit.
  • the existing regulators for centrifugal compressors are linked with the impeller adjustment mechanism, the control is not independent, and the structure is not independent, so the control is not accurate enough, and the refrigerant gas cannot be prevented from flowing backward.
  • the object of the present invention is to provide an adjustment structure of a centrifugal compressor with reasonable design, independent structure and easy installation, and a centrifugal compressor having the same, which can precisely adjust the width of the impeller diffusing outlet of the centrifugal compressor, and It can prevent the refrigerant gas from flowing backwards.
  • the connected support and the mounting plate are formed together, including a driving device, a driving ring, a transmission and an adjustable device; the driving ring is respectively connected with the driving device and the transmission device, the adjustable device and the transmission
  • the device is connected to block the expansion and discharge outlet;
  • the drive ring is of a ring shape and is fitted on the support;
  • the drive ring is provided with a slot corresponding to the transmission, the transmission One end of the device is disposed in the slot, one end of the transmission disposed in the slot is movable within the slot, and the driving device drives the drive ring to be the same as the support A relative rotational movement of the shaft, the drive ring driving the adjuster to move by the transmission for changing an obstruction range of the adjuster to adjust a width of the diffuser outlet.
  • the slot is divided into three segments, which are a first segment hole, a second segment hole and a third segment hole, and the first segment hole and the third segment hole are straight grooves.
  • a hole, the second hole is a chute hole; a center line of the first hole, a center line of the second hole, and a center line of the third hole are sequentially connected to form a hole a center line of the slot, wherein a center line of the first hole is parallel to a center line of the third hole, and a center line of the second hole is The acute angle ⁇ between the center lines of the third section of the hole is 14.5 ° ⁇ 40 °;
  • the transmission device includes a guiding rod and a sliding rod, the guiding rod and the adjustable device are fixedly connected, the sliding rod includes a fixing portion and a driving portion, and the fixing portion is fixedly connected with the guiding rod, the driving Inserting in the slot, the driving ring pushes the driving portion through the slot, thereby driving the sliding rod to drive the guiding rod to move, thereby driving the adjustable device to move to change the The occlusion range of the adjuster.
  • the adjustment structure of the centrifugal compressor further includes a baffle for preventing the drive ring from being disengaged from the support, the baffle being fixedly coupled to the support and abutting Outside the drive ring.
  • the slot is a straight slot
  • the drive ring is provided with an internal thread
  • the support is provided with an external thread
  • the internal thread is matched with the external thread
  • the transmission includes a guide rod and a slide bar, the guide rod and the adjuster are fixedly connected, the slide rod
  • a fixing portion and a driving portion are fixedly connected to the guiding rod, the driving portion is inserted in the slot, and the driving ring pushes the driving portion through the slot to drive the
  • the sliding rod drives the guiding rod to move, thereby driving the adjustable device to change the shielding range of the adjustable device.
  • the internal thread is a double thread.
  • the transmission device includes a guide rod and a sliding rod, the guide rod and the adjustable rod are fixedly connected, the sliding rod includes a fixing portion and a driving portion, and the sliding rod is disposed on the guiding rod a mounting hole, the fixing portion is provided with a thread, the fixing portion passes through the sliding rod mounting hole, and is fixed to the sliding rod mounting hole by a nut; the driving portion is inserted in the slot, The driving ring pushes the driving portion through the slot, thereby driving the sliding rod to drive the guiding rod to move, thereby driving the adjustable device to move to change the shielding range of the adjustable device.
  • the guide rod includes a threaded mounting portion, and the adjuster is provided with a guide rod mounting hole, the mounting portion passes through the guide rod mounting hole, and is fixedly connected by a nut The guide rod is mounted on the hole.
  • the adjuster is annular
  • the guide rod mounting holes are three, and are evenly disposed outside the adjuster
  • the number of the transmission devices is three, and One-to-one correspondence with the guide rod mounting holes respectively.
  • the slots are long holes, the number of the slots is three, and are evenly distributed on the drive ring, and the transmissions are respectively in one-to-one correspondence with the slots.
  • the adjustment structure of the centrifugal compressor further includes a coupling, and both ends of the coupling are respectively hinged with the driving device and the driving ring.
  • the driving device includes a motor, a gear and a rack, the motor is coupled to the gear, the gear meshes with the rack, and the rack is hinged with the coupling
  • the motor drives the rack movement through the gear, and then drives the drive ring to perform a relative rotational movement coaxial with the support through the coupling.
  • the drive device is a linear motor.
  • centrifugal compressor comprising an adjustment structure of a centrifugal compressor of any of the above technical features.
  • the driving device drives the driving ring to perform a relative rotational movement coaxial with the support.
  • the driving ring drives the adjustable actuator to move through the transmission device, and is used for changing the shielding range of the adjustable outlet to the diffusing outlet, thereby adjusting the width of the diffusing outlet.
  • the invention has the advantages of reasonable design, independent structure, easy installation, precise adjustment of the width of the impeller diffusing outlet of the centrifugal compressor, and prevention of backflow of the refrigerant gas.
  • Figure 1 is a top plan view showing an embodiment of an adjustment structure of a centrifugal compressor of the present invention
  • Figure 2 is a schematic cross-sectional view of the transmission device of Figure 1;
  • Figure 3 is a partial schematic view of the drive ring of Figure 2;
  • Figure 4 is a schematic view showing the force analysis of the slot shown in Figure 3;
  • Figure 5 is a schematic view of the guide bar of Figure 2;
  • Figure 6 is a schematic view of the slider of Figure 2;
  • Figure 7 is a schematic view of the adjuster of Figure 2;
  • Figure 8 is a cross-sectional view of the driving device of Figure 1;
  • Figure 9 is a top plan view showing another embodiment of the adjustment structure of the centrifugal compressor of the present invention.
  • Figure 10 is a schematic cross-sectional view of the transmission of Figure 9;
  • Figure 11 is a partial schematic view of another embodiment of a drive ring
  • 1 drive device 1 drive device; 2 drive ring; 3 transmission device; 4 adjuster; 5 seat; 6 box; 7 mounting plate; 8 diffuser outlet; 9 slot; 10 guide; 11 slider; 13; drive part; 14 slide rod mounting hole; 15 mounting part; 16 guide rod mounting hole; 17 coupling joint; 18 motor; 19 gear; 20 rack; 21 baffle.
  • an adjustment structure of a centrifugal compressor is used for adjusting the width of a diffuser outlet 8 of an impeller of a centrifugal compressor
  • the centrifugal compressor includes a casing 6, which is expanded.
  • the outlet 8 is formed by a support 5 and a mounting plate 7 fixedly connected to the casing 6.
  • the adjusting structure of the centrifugal compressor comprises a driving device 1, a driving ring 2, a transmission device 3 and an adjustable device 4, and the driving ring 2 is respectively connected with the driving device 1 and the transmission device 3, and the adjustable device 4 is connected with the transmission device 3, and
  • the diffuser outlet 8 is blocked.
  • the drive ring 2 is of a ring shape and is fitted on the support 5; the drive device 1 drives the drive ring 2 to be coaxial with the support 5 For the rotation movement.
  • the drive ring 2 drives the adjuster 4 to move by the transmission 3 for changing the shielding range of the adjuster 4, thereby adjusting the width of the diffuser outlet 8.
  • the driving device 1, the driving ring 2, the transmission device 3 and the adjustable device 4 can be independently arranged, and the installation is convenient, and the control of the range of the diffuser outlet 8 for the adjustable device 4 is not affected by the centrifugal compressor itself. It can be independently controlled by the driving device 1, the driving ring 2 and the transmission device 3, so that the adjustment of the diffusing outlet 8 is more precise, and the adjustable outlet 4 of the adjustable regulator 4 can be realized when the centrifugal compressor is stopped. All are blocked to prevent backflow of refrigerant gas into the centrifugal compressor.
  • the drive ring 2 is provided with a slot 9 which is divided into three segments (three segments from left to right in FIG. 2), which are first The segment hole, the second segment hole and the third segment hole, the first segment hole and the third segment hole are straight slot holes, the second segment hole is oblique groove hole; the first segment hole center connection line and the second segment hole The center line of the third section and the center line of the third section of the hole are sequentially connected to form a center line of the slot 9.
  • 3 is the center line of the slot hole 9, wherein the center line of the first section of the hole is The center line of the third section of the hole is parallel, and the acute angle between the center line of the second section of the hole and the center line of the third section of the hole is 14.5° to 40°, preferably 15° to 25°;
  • the acute angle between the center line of the two-stage hole and the center line of the third-stage hole is equal to the angle of the angle ⁇ in FIG.
  • the angle ⁇ is too small, the angle of rotation of the driving ring 2 is large, which is not conducive to the structural design, and the working efficiency is also low; the angle ⁇ is too large, and the force component F1 of the sliding rod 11 is reduced by the force analysis diagram.
  • the impeller exit width is generally less than 15 mm, and the operating range of the adjuster 4 is less than 15 mm, so the bevel height h of the slot 9 of the drive ring 2 does not exceed 15 mm.
  • the transmission device 3 includes a guiding rod 10 and a sliding rod 11 , and the guiding rod 10 and the adjustable device 4 are fixedly connected; wherein the sliding rod 11 is 11
  • the fixing portion 12 and the driving portion 13 are included.
  • the fixing portion 12 is fixedly coupled to the guide rod 10, and the driving portion 13 is inserted into the slot 9.
  • a baffle 21 for preventing the drive ring 2 from coming off the support 5 is provided outside the drive ring 2, and the baffle 21 is fixedly connected to the support 5 and abuts against the outside of the drive ring 2.
  • the driving ring 2 pushes the driving portion 13 through the slot 9, so that the sliding rod 11 is driven to move the guiding rod 10, thereby driving the adjustable actuator 4 to change the shielding range of the adjustable device 4.
  • This not only has a simple structure, is easy to install, but also enables the transmission 3 to drive the adjustable actuator 4 more flexibly and accurately.
  • the guide rod 10 is provided with a sliding rod mounting hole 14 , and the fixing portion 12 is provided.
  • the threaded portion is fixed, and the fixing portion 12 passes through the slider mounting hole 14 and is fixed to the slider mounting hole 14 by a nut. This facilitates the installation or disassembly between the slide bar 11 and the guide bar 10, which brings convenience to the maintenance work.
  • the guide bar 10 includes a threaded mounting portion 15 on which the guide rod mounting hole 16 is disposed, and the mounting portion 15 is installed through the guide rod.
  • the hole 16 is fixedly attached to the guide rod mounting hole 16 by a nut. This facilitates the installation or disassembly between the adjuster 4 and the guide rod 10, which brings convenience to the inspection work.
  • the adjuster 4 has a circular shape, and the guide rod mounting holes 16 are three, and are evenly disposed outside the adjustable adjuster 4; the number of the transmission devices 3 is three, and is respectively associated with the guide rod mounting holes 16 A correspondence. This makes the force of the adjuster 4 more balanced, ensures the stability of the operation of the adjuster 4, and makes the adjustment of the diffuser outlet 8 of the adjuster 4 more precise.
  • the slot 9 is a long hole, the number of the slots 9 is three, and is evenly distributed on the driving ring 2; the transmission device 3 and the slot respectively Holes 9 correspond one-to-one.
  • the slot 9 is a long hole, and the relative movement range of the driving portion 13 in the slot 9 is larger, so that the adjustment range of the actuator 3 to the adjuster 4 is wider, and the adjustable actuator 4 can be extended to the diffuser outlet 8 Open or cover completely.
  • the adjustment structure of the centrifugal compressor further includes a coupling 17, and both ends of the coupling 17 are respectively hinged with the driving device 1 and the driving ring 2.
  • the drive unit 1 includes a motor 18, a gear 19 and a rack 20, as shown in FIG.
  • the motor 18 and the gear 19 are drivingly connected, the gear 19 meshes with the rack 20; the rack 19 is hinged with the coupling 17; the motor 18 drives the rack 20 through the gear 19, and then drives the drive ring 2 through the coupling 17
  • the relative rotational movement of the seat 5 is coaxial. This is more advantageous for the installation of the drive unit.
  • the drive device 1 is a linear motor.
  • the driving ring 2 is provided with internal threads
  • the bearing 5 is provided with external threads
  • the internal threads are matched with the external threads
  • the driving ring 2 is mounted by screwing.
  • Support 5 is on.
  • the internal thread provided on the drive ring 2 is preferably double threaded.
  • the inner diameter of the driving ring 2 and the supporting portion are threaded, and the slot 9 in the driving ring 2 is a straight slot, as shown in FIG.
  • the drive ring 2 needs to be rotated at different angles, and may need to be rotated by a few ten to several tens of degrees or even several turns.
  • the slot of the drive ring 2 may be a segment as shown in the figure, or may be along the edge. The circumference of the drive ring 2 is one turn.
  • the drive ring 2 is screwed to the support 5, and when the drive ring 2 rotates, it is pushed by the thread to move in the axial direction, the slide bar 11 moves along the slot 9 of the drive ring 2, and is synchronized with the axial movement of the drive ring 2 Moving, and driving the guide rod 10 to move along the axial direction of the guide rod mounting hole 16, changing the shielding range of the adjustable adjuster 4, thereby adjusting the width of the diffuser outlet 8.
  • the baffle 21 in Fig. 2 can be omitted.
  • the present invention also relates to a centrifugal compressor comprising an adjustment structure of a centrifugal compressor of any of the above technical features.
  • the invention has the following advantages: reasonable design, independent structure, easy installation, precise adjustment of the width of the impeller diffusing outlet of the centrifugal compressor, and prevention of backflow of the refrigerant gas.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

披露了一种离心式压缩机的调节结构及离心式压缩机，调节机构用于调节离心式压缩机的叶轮的扩压出口的宽度，离心式压缩机包括箱体（6），扩压出口（8）由与箱体（6）固定连接的支座（5）和安装板（7）共同形成，调节结构包括驱动装置（1）、驱动环（2）、传动装置（3）和可调节器（4）；驱动环（2）分别与驱动装置（1）和传动装置（3）连接；可调节器（4）与传动装置（3）连接，并遮挡扩压出口（8）；驱动环（2）为圆环型，并套装在支座（5）上，驱动环（2）上设置有与传动装置（3）相配合的槽孔（9）；驱动装置（1）驱动驱动环（2）做与支座（5）同轴的相对旋转运动；驱动环（2）通过传动装置（3）带动可调节器（4）移动，改变可调节器（4）的遮挡范围，从而精确调节离心式压缩机的叶轮扩压出口的宽度，并能够防止冷媒气体倒流。

Description

离心式压缩机的调节结构及离心式压缩机
相关申请
本专利申请要求2014年7月23日申请的，申请号为201410353334.7，名称为“离心式压缩机的调节结构及离心式压缩机”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本发明涉及家电技术领域，特别涉及一种离心式压缩机的调节结构及离心式压缩机。
背景技术
随着科学技术的不断进步，离心式压缩机在家电生产中的应用也越来越广泛。
目前，离心式压缩机的叶轮出口处安装有调节器，使叶轮出口处形成一个宽度可调节的节段，并按照机组的运行情况调节叶轮的出口宽度。现有离心式压缩机用调节器都是与叶轮调节机构联动，控制不独立，结构不独立，所以控制不够精确，而且无法防止冷媒气体倒流。
发明内容
本发明的目的是提供一种设计合理、结构独立、容易安装的离心式压缩机的调节结构及具有其的离心式压缩机，其可以精确调节离心式压缩机的叶轮扩压出口的宽度，并能够防止冷媒气体倒流。
为实现上述目的，本发明所采用的技术方案是：
一种离心式压缩机的调节结构，用于调节所述离心式压缩机的叶轮的扩压出口的宽度，所述离心式压缩机包括箱体，所述扩压出口由与所述箱体固定连接的支座和安装板共同形成，包括驱动装置、驱动环、传动装置和可调节器；所述驱动环分别与所述驱动装置和所述传动装置连接，所述可调节器与所述传动装置连接，并遮挡所述扩压出口；所述驱动环为圆环型，并套装在所述支座上；所述驱动环上设置有与所述传动装置相配合的槽孔，所述传动装置的一端置于所述槽孔内，置于所述槽孔内的所述传动装置的一端能够在所述槽孔内移动，所述驱动装置驱动所述驱动环做与所述支座同轴的相对旋转运动，所述驱动环通过所述传动装置带动所述可调节器移动，用于改变所述可调节器的遮挡范围，从而调节所述扩压出口的宽度。
在其中一个实施例中，所述槽孔分为三段，依次为第一段孔、第二段孔和第三段孔，所述第一段孔和所述第三段孔均为直槽孔，所述第二段孔为斜槽孔；所述第一段孔的中心连线、所述第二段孔的中心连线、所述第三段孔的中心连线顺次连接形成所述槽孔的中心连线，其中，所述第一段孔的中心连线与所述第三段孔的中心连线平行，所述第二段孔的中心连线与 所述第三段孔的中心连线之间的锐角夹角α为14.5°～40°；
所述传动装置包括导杆和滑杆，所述导杆和所述可调节器固定连接，所述滑杆包括固定部和驱动部，所述固定部与所述导杆固定连接，所述驱动部插在所述槽孔内，所述驱动环通过所述槽孔推动所述驱动部，从而驱动所述滑杆带动所述导杆移动，进而带动所述可调节器移动，来改变所述可调节器的遮挡范围。
在其中一个实施例中，所述的离心式压缩机的调节结构还包括用于阻止所述驱动环脱离所述支座的挡板，所述挡板与所述支座固定连接，并贴靠在所述驱动环外侧。
在其中一个实施例中，所述槽孔为直槽孔，所述驱动环上设置内螺纹，所述支座上设置外螺纹，所述内螺纹与所述外螺纹相匹配，所述驱动环与所述支座螺纹连接，所述驱动环旋转时相对所述底座轴向运动；所述传动装置包括导杆和滑杆，所述导杆和所述可调节器固定连接，所述滑杆包括固定部和驱动部，所述固定部与所述导杆固定连接，所述驱动部插在所述槽孔内，所述驱动环通过所述槽孔推动所述驱动部，从而驱动所述滑杆带动所述导杆移动，进而带动所述可调节器移动，来改变所述可调节器的遮挡范围。
在其中一个实施例中，所述内螺纹为双螺纹。
在其中一个实施例中，所述传动装置包括导杆和滑杆，所述导杆和所述可调节器固定连接，所述滑杆包括固定部和驱动部，所述导杆上设置滑杆安装孔，所述固定部设置螺纹，所述固定部穿过所述滑杆安装孔，并通过螺母固定在所述滑杆安装孔上；所述驱动部插在所述槽孔内，所述驱动环通过所述槽孔推动所述驱动部，从而驱动所述滑杆带动所述导杆移动，进而带动所述可调节器移动，来改变所述可调节器的遮挡范围。
在其中一个实施例中，所述导杆包括设置螺纹的安装部，所述可调节器上设置导杆安装孔，所述安装部穿过所述导杆安装孔，并通过螺母固定连接在所述导杆安装孔上。
在其中一个实施例中，所述可调节器为圆环形，所述导杆安装孔为三个，并均匀设置在所述可调节器的外侧，所述传动装置的数量为三个，并分别与所述导杆安装孔一一对应。
在其中一个实施例中，所述槽孔为长孔，所述槽孔的数量为三个，并均匀分布在所述驱动环上，所述传动装置分别与所述槽孔一一对应。
在其中一个实施例中，所述的离心式压缩机的调节结构还包括联轴节，所述联轴节的两端分别与所述驱动装置和所述驱动环铰接。
在其中一个实施例中，所述驱动装置包括电机、齿轮和齿条，所述电机和所述齿轮传动连接，所述齿轮与所述齿条啮合，所述齿条与所述联轴节铰接，所述电机通过所述齿轮驱动所述齿条运动，进而通过所述联轴节带动所述驱动环做与所述支座同轴的相对旋转运动。
在其中一个实施例中，所述驱动装置为直线电机。
还涉及一种离心式压缩机，包括以上任意技术特征的离心式压缩机的调节结构。
本发明的有益效果是：
采用驱动装置驱动驱动环做与支座同轴的相对旋转运动，驱动环通过传动装置带动可调节器移动，用于改变可调节器对扩压出口的遮挡范围，从而调节扩压出口的宽度，使得本发明具有设计合理、结构独立、容易安装、可以精确调节离心式压缩机的叶轮扩压出口的宽度，并能够防止冷媒气倒流的优点。
附图说明
图1为本发明的离心式压缩机的调节结构一实施例的俯示图；
图2为图1中传动装置的剖面示意图；
图3为图2中驱动环局部示意图；
图4图3所示槽孔的受力分析示意图；
图5为图2中导杆示意图；
图6为图2中滑杆示意图；
图7为图2中可调节器示意图；
图8为图1中驱动装置的剖面示意图；
图9为本发明的离心式压缩机的调节结构另一实施例的俯示图；
图10为图9中传动装置的剖面示意图；
图11为驱动环另一实施例的局部示意图；
其中：1驱动装置；2驱动环；3传动装置；4可调节器；5支座；6箱体；7安装板；8扩压出口；9槽孔；10导杆；11滑杆；12固定部；13驱动部；14滑杆安装孔；15安装部；16导杆安装孔；17联轴节；18电机；19齿轮；20齿条；21挡板。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例对本发明的离心式压缩机的调节结构及离心式压缩机进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
如图1、图2和图8所示，一种离心式压缩机的调节结构，用于调节离心式压缩机的叶轮的扩压出口8的宽度，离心式压缩机包括箱体6，扩压出口8由与箱体6固定连接的支座5和安装板7共同形成。离心式压缩机的调节结构包括驱动装置1、驱动环2、传动装置3和可调节器4，驱动环2分别与驱动装置1和传动装置3连接，可调节器4与传动装置3连接，并遮挡扩压出口8。
驱动环2为圆环型，并套装在支座5上；驱动装置1驱动驱动环2做与支座5同轴的相 对旋转运动。驱动环2通过传动装置3带动可调节器4移动，用于改变可调节器4的遮挡范围，从而调节扩压出口8的宽度。
这样，驱动装置1、驱动环2、传动装置3和可调节器4均可以独立设置，安装方便，并且对可调节器4遮挡扩压出口8的范围的控制不受离心式压缩机本身的影响，可以由驱动装置1、驱动环2以及传动装置3独立控制，从而对扩压出口8的调节更加精确，并且能够实现在离心式压缩机停止工作时，可调节器4对扩压出口8的全部遮挡，从而防止冷媒气倒流进入离心式压缩机。
作为一种可实施方式，如图2至图4所示，驱动环2上设置槽孔9，槽孔9分为三段(图2中从左向右分为三段)，依次为第一段孔、第二段孔和第三段孔，第一段孔和第三段孔均为直槽孔，第二段孔为斜槽孔；第一段孔的中心连线、第二段孔的中心连线、第三段孔的中心连线顺次连接形成槽孔9的中心连线，图3中的虚线为槽孔9的中线连线，其中，第一段孔的中心连线与第三段孔的中心连线平行，第二段孔的中心连线与第三段孔的中心连线之间的锐角夹角为14.5°～40°，优选15°～25°；其中，第二段孔的中心连线与第三段孔的中心连线之间的锐角夹角与图4中的夹角α的角度相等。
α角度太小，驱动环2转动的角度就大，不利于结构设计，工作效率也较低；α角度太大，由受力分析图看出，推动滑杆11的分力F1就减小，而滑杆11所受的横向力F2增加，则推动的阻力相对就较大，调节机构工作就比较费力，所以应该确定一个合适的α角度值。叶轮出口宽度一般小于15mm，则可调节器4的运行范围小于15mm，所以驱动环2的槽孔9的斜边高度h不超过15mm。L为驱动环2转动的周向展开长度。以斜边高度h＝15mm为例，L按照经验取值，计算如下：
设L＝58，则tgα＝15/58＝0.258，α＝14.5°；设L＝18，则tgα＝15/18＝0.83，α＝39.8°；得到结论：α角取值范围为14.5°～40°。其中，15°～25°为最佳取值范围。
作为一种可实施方式，如图1、图2、图3和图6所示，传动装置3包括导杆10和滑杆11，导杆10和可调节器4固定连接；其中，滑杆11包括固定部12和驱动部13。固定部12与导杆10固定连接，驱动部13插在槽孔9内。
优选地，在驱动环2外侧设置用于阻止驱动环2脱离支座5的挡板21，挡板21与支座5固定连接，并贴靠在驱动环2外侧。
驱动环2通过槽孔9推动驱动部13，从而驱动滑杆11带动导杆10移动，进而带动可调节器4移动，来改变可调节器4的遮挡范围。
这样不仅结构简单，便于安装，而且能够使传动装置3对可调节器4的驱动更加灵活，精准。
作为一种可实施方式，如图5和图6所示，导杆10上设置滑杆安装孔14，固定部12设 置螺纹，固定部12穿过滑杆安装孔14，并通过螺母固定在滑杆安装孔14上。这样便于滑杆11和导杆10之间的安装或拆卸，给检修工作带来了方便。
作为一种可实施方式，如图1、图5和图7所示，导杆10包括设置螺纹的安装部15，可调节器4上设置导杆安装孔16，安装部15穿过导杆安装孔16，并通过螺母固定连接在导杆安装孔16上。这样便于可调节器4和导杆10之间的安装或拆卸，给检修工作带来了方便。
优选地，可调节器4为圆环形，导杆安装孔16为三个，并均匀设置在可调节器4的外侧；传动装置3的数量为三个，并分别与导杆安装孔16一一对应。这样能够使可调节器4的受力更加均衡，保证了可调节器4运行的稳定性，使可调节器4对扩压出口8的的调节更加精确。
作为一种可实施方式，如图6、图10和图11所示，槽孔9为长孔，槽孔9的数量为三个，并均匀分布在驱动环2上；传动装置3分别与槽孔9一一对应。
槽孔9为长孔能够驱动部13在槽孔9内的相对运动范围更大，从而使传动装置3对可调节器4的调节范围更广，能够使可调节器4对扩压出口8全部打开或全部遮盖。
作为一种可实施方式，如图1所示，离心式压缩机的调节结构还包括联轴节17，联轴节17的两端分别与驱动装置1和驱动环2铰接。这样能够使驱动装置1对驱动环2的旋转驱动更加灵活可靠，不会出现卡死的现象。优选地，驱动装置1包括电机18、齿轮19和齿条20，如图7所示。电机18和齿轮19传动连接，齿轮19与齿条20啮合；齿条19与联轴节17铰接；电机18通过齿轮19驱动齿条20运动，进而通过联轴节17带动驱动环2做与支座5同轴的相对旋转运动。这样更加有利于驱动装置的安装。
作为一种可实施方式，如图9所示，驱动装置1为直线电机。
作为一种可实施方式，如图9和图10所示，驱动环2上设置内螺纹，支座5上设置外螺纹，内螺纹与外螺纹相匹配，并通过螺纹连接将驱动环2安装在支座5上。驱动环2上设置内螺纹优选为双螺纹。
驱动环2的内径与支座配合的部分开制螺纹，驱动环2上的槽孔9为直槽孔，如图9所示。根据螺纹的螺距不同，驱动环2需要转动的角度不同，可能需要转动十几度到几十度甚至几圈，则驱动环2的槽孔可为是如图所示的一段，也可为沿驱动环2的圆周一圈。驱动环2与支座5螺纹连接，驱动环2旋转时，被螺纹推动其沿轴向移动，滑杆11沿着驱动环2的槽孔9移动，并且随着驱动环2的轴向移动同步移动,并带动导杆10沿着导杆安装孔16的轴向移动，改变可调节器4的遮挡范围，从而调节扩压出口8的宽度。该种实施方式，图2中的挡板21可省略。
本发明还涉及一种离心式压缩机，包括以上任意技术特征的离心式压缩机的调节结构。
本发明具有如下优点：设计合理、结构独立、容易安装、可以精确调节离心式压缩机的叶轮扩压出口的宽度，并能够防止冷媒气倒流。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (13)

  1. 一种离心式压缩机的调节结构，用于调节所述离心式压缩机的叶轮的扩压出口的宽度，所述离心式压缩机包括箱体，所述扩压出口由与所述箱体固定连接的支座和安装板共同形成，其特征在于：
    包括驱动装置、驱动环、传动装置和可调节器，所述驱动环分别与所述驱动装置和所述传动装置连接，所述可调节器与所述传动装置连接，并遮挡所述扩压出口；所述驱动环为圆环型，并套装在所述支座上，所述驱动环上设置有与所述传动装置相配合的槽孔，所述传动装置的一端置于所述槽孔内，置于所述槽孔内的所述传动装置的一端能够在所述槽孔内移动；所述驱动装置驱动所述驱动环做与所述支座同轴的相对旋转运动，所述驱动环通过所述传动装置带动所述可调节器移动，用于改变所述可调节器的遮挡范围，从而调节所述扩压出口的宽度。
  2. 根据权利要求1所述的离心式压缩机的调节结构，其特征在于：
    所述槽孔分为三段，依次为第一段孔、第二段孔和第三段孔，所述第一段孔和所述第三段孔均为直槽孔，所述第二段孔为斜槽孔；所述第一段孔的中心连线、所述第二段孔的中心连线、所述第三段孔的中心连线顺次连接形成所述槽孔的中心连线，其中，所述第一段孔的中心连线与所述第三段孔的中心连线平行，所述第二段孔的中心连线与所述第三段孔的中心连线之间的锐角夹角为14.5°～40°；所述传动装置包括导杆和滑杆，所述导杆和所述可调节器固定连接，所述滑杆包括固定部和驱动部，所述固定部与所述导杆固定连接，所述驱动部插在所述槽孔内，所述驱动环通过所述槽孔推动所述驱动部，从而驱动所述滑杆带动所述导杆移动，进而带动所述可调节器移动，来改变所述可调节器的遮挡范围。
  3. 根据权利要求2所述的离心式压缩机的调节结构，其特征在于：
    还包括用于阻止所述驱动环脱离所述支座的挡板，所述挡板与所述支座固定连接，并贴靠在所述驱动环外侧。
  4. 根据权利要求1所述的离心式压缩机的调节结构，其特征在于：
    所述槽孔为直槽孔，所述驱动环上设置内螺纹，所述支座上设置外螺纹，所述内螺纹与所述外螺纹相匹配，所述驱动环与所述支座螺纹连接，所述驱动环旋转时相对所述底座轴向运动；所述传动装置包括导杆和滑杆，所述导杆和所述可调节器固定连接，所述滑杆包括固定部和驱动部，所述固定部与所述导杆固定连接，所述驱动部插在所述槽孔内，所述驱动环通过所述槽孔推动所述驱动部，从而驱动所述滑杆带动所述导杆移动，进而带动所述可调节器移动，来改变所述可调节器的遮挡范围。
  5. 根据权利要求4所述的离心式压缩机的调节结构，其特征在于：
    所述内螺纹为双螺纹。
  6. 根据权利要求1所述的离心式压缩机的调节结构，其特征在于：
    所述传动装置包括导杆和滑杆，所述导杆和所述可调节器固定连接，所述滑杆包括固定部和驱动部，所述导杆上设置滑杆安装孔，所述固定部设置螺纹，所述固定部穿过所述滑杆安装孔，并通过螺母固定在所述滑杆安装孔上；所述驱动部插在所述槽孔内，所述驱动环通过所述槽孔推动所述驱动部，从而驱动所述滑杆带动所述导杆移动，进而带动所述可调节器移动，来改变所述可调节器的遮挡范围。
  7. 根据权利要求6所述的离心式压缩机的调节结构，其特征在于：
    所述导杆包括设置螺纹的安装部，所述可调节器上设置导杆安装孔，所述安装部穿过所述导杆安装孔，并通过螺母固定连接在所述导杆安装孔上。
  8. 根据权利要求7所述的离心式压缩机的调节结构，其特征在于：
    所述可调节器为圆环形，所述导杆安装孔为三个，并均匀设置在所述可调节器的外侧；所述传动装置的数量为三个，并分别与所述导杆安装孔一一对应。
  9. 根据权利要求8所述的离心式压缩机的调节结构，其特征在于：
    所述槽孔为长孔，所述槽孔的数量为三个，并均匀分布在所述驱动环上，所述传动装置分别与所述槽孔一一对应。
  10. 根据权利要求1所述的离心式压缩机的调节结构，其特征在于：
    还包括联轴节，所述联轴节的两端分别与所述驱动装置和所述驱动环铰接。
  11. 根据权利要求10所述的离心式压缩机的调节结构，其特征在于：
    所述驱动装置包括电机、齿轮和齿条，所述电机和所述齿轮传动连接，所述齿轮与所述齿条啮合，所述齿条与所述联轴节铰接，所述电机通过所述齿轮驱动所述齿条运动，进而通过所述联轴节带动所述驱动环做与所述支座同轴的相对旋转运动。
  12. 根据权利要求10所述的离心式压缩机的调节结构，其特征在于：
    所述驱动装置为直线电机。
  13. 一种离心式压缩机，其特征在于：
    包括权利要求1至12任意一项所述的离心式压缩机的调节结构。
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