WO2017063588A1

WO2017063588A1 - Double-stage capacity-variable compressor and air conditioning system having the same

Info

Publication number: WO2017063588A1
Application number: PCT/CN2016/102185
Authority: WO
Inventors: 徐嘉; 邓丽颖; 万鹏凯; 胡余生; 梁社兵
Original assignee: 珠海格力节能环保制冷技术研究中心有限公司; 珠海凌达压缩机有限公司
Priority date: 2015-10-15
Filing date: 2016-10-14
Publication date: 2017-04-20
Also published as: CN106567831B; KR20180053323A; CN106567831A; KR102045694B1; JP6622397B2; JP2018531342A

Abstract

A double-stage capacity-variable compressor and an air conditioning system having the same. The double-stage capacity-variable compressor comprises a first cylinder group (10) and a second cylinder group (20). The first cylinder group (10) comprises: a first cylinder (11) having a first sliding slot (12) for a sliding vane and a first via (12a) that is in communication with the first sliding slot (12) for a sliding vane and used for receiving a high-pressure gas, a first sliding vane (14) that abuts against the circumferential surface of a centrifugally disposed first roller (30) and has a positioning slot (15), and a locking mechanism (16). The upper end of the locking mechanism (16) is in communication with the first via (12a), the lower end selectably receives a high-pressure gas or a low-pressure gas, so that the locking mechanism (16) has a locked position or an unlocked position. The second cylinder group (20) comprises a second sliding vane (23) that always abuts against the circumferential surface of a centrifugally disposed second roller (40). The double-stage capacity-variable compressor and the air conditioning system having the same can achieve stable switching between double-stage and single-stage capacity-variable modes.

Description

双级变容压缩机及具有其的空调***Two-stage variable capacity compressor and air conditioning system therewith

技术领域Technical field

本发明涉及一种双级变容压缩机及具有其的空调***。The present invention relates to a two-stage variable capacity compressor and an air conditioning system therewith.

背景技术Background technique

随着国家能效等级要求的日益提高，现有的双级变容压缩机通过补气增焓解决了低温制热量不足的问题，使得空调制热量得到满足。但双级变容压缩机由于有高压级及低压级两个气缸进行压缩，对于负载较重的工况(名义制冷，名义制热，国标工况，低温工况等)而言，压比较大。采用双级压缩可以有效地将压比进行分配，使得高低压级缸均能合理的运行。对于空调***运行的轻负荷工况(比如IPLV工况，中间工况等)而言，通过变容机构进行中低压切换实现单缸单级变容运转可有效解决轻工况运行时的能效低的问题，但中低压切换受工况的影响较大，销钉可能会存在误动导致切换失败。具体地，现有方案下气缸滑片槽尾部通过隔板导气槽和下气缸导气槽与中间腔连通，通过变容机构实现中压与低压的切换。在双级运转模式下，中间腔为中压，销钉所受的压力差为中压与低压的压差。受工况的影响较大，可能存在中低压压差小于弹簧力而导致双级无法正常运行的隐患。With the increasing requirements of the national energy efficiency rating, the existing two-stage variable-capacity compressor solves the problem of insufficient heat production at low temperature by supplementing the air and increasing the heat, so that the heat of the air conditioner is satisfied. However, the two-stage variable-capacity compressor is compressed by two cylinders of high-pressure and low-pressure stages. For heavy-duty working conditions (nominal cooling, nominal heating, national standard working conditions, low-temperature working conditions, etc.), the pressure is relatively large. . The two-stage compression can effectively distribute the pressure ratio, so that the high and low pressure cylinders can operate reasonably. For the light load conditions of the air conditioning system (such as IPLV working conditions, intermediate working conditions, etc.), the medium-low pressure switching through the variable-capacity mechanism enables single-cylinder single-stage varactor operation to effectively solve the low energy efficiency during light operation. The problem, but the medium and low voltage switching is greatly affected by the working conditions, and the pin may have a misoperation resulting in the switching failure. Specifically, in the prior art, the tail portion of the cylinder sliding groove communicates with the intermediate cavity through the partition air guiding groove and the lower cylinder air guiding groove, and the intermediate pressure and the low pressure are switched by the variable capacity mechanism. In the two-stage operation mode, the intermediate chamber is medium-pressure, and the pressure difference between the pins is the pressure difference between the medium pressure and the low pressure. Affected by the working conditions, there may be hidden dangers that the medium and low pressure differentials are less than the spring force and the two stages cannot operate normally.

目前的压缩机中，有多种形式的锁止机构用于控制滑片的运动。一种是通过通断电磁控制销钉运动，该方法涉及到电磁铁的安装及可靠性，压缩机整机结构及控制较为复杂；另一种是靠切换销钉尾部吸气压力、排气压力，在与弹簧力的合力下控制销钉的运动从而锁定滑片或使滑片正常运行，弹簧设置于销钉的头部，需要增加限位结构，导致结构复杂，此外，该方法只适用于低背压运行的压缩机装置，并且滑片尾部必须安装弹簧；在一种是卸载缸的滑片槽尾部是密封结构，通过切换滑片槽尾部的压力控制滑片运动。销钉需要在有压差的情况下才能锁住滑片运动。且安装在下法兰上的销钉安装较为复杂，安装在下法兰消音腔内用消音器限位的方法对消音器的硬度要求较高。另外，该专利的高压是从油池引入的高压油，以保证滑片的润滑和密封，但同时也带来滑片槽积油使滑片运行过程中功耗增大的隐患。In current compressors, various forms of locking mechanisms are used to control the movement of the slider. One is to control the pin movement by on-off electromagnetic control. The method involves the installation and reliability of the electromagnet. The structure and control of the compressor are complicated. The other is to change the suction pressure and exhaust pressure at the tail of the pin. Under the combined force of the spring force, the movement of the pin is controlled to lock the sliding piece or the sliding piece to operate normally. The spring is disposed on the head of the pin, and the limit structure needs to be added, resulting in a complicated structure. In addition, the method is only suitable for low back pressure operation. The compressor unit and the tail of the slider must be fitted with a spring; in the end of the slider slot, the unloading cylinder is a sealing structure that controls the movement of the slider by switching the pressure at the tail of the vane slot. The pin needs to lock the slide motion in the presence of a pressure differential. Moreover, the mounting of the pin mounted on the lower flange is complicated, and the method of fixing the muffler in the silencer cavity of the lower flange requires high hardness of the muffler. In addition, the patent's high pressure is the high pressure oil introduced from the oil pool to ensure the lubrication and sealing of the slide, but it also brings the hidden danger of the power consumption of the slide during the operation of the slide.

发明内容Summary of the invention

本发明的主要目的在于提供一种单双级变容切换稳定安全的双级变容压缩机及具有其的空调***。The main object of the present invention is to provide a two-stage variable-capacity switching stable and safe two-stage variable displacement compressor and an air conditioning system therewith.

为了实现上述目的，根据本发明的一个方面，提供了一种双级变容压缩机，包括沿双级变容压缩机的轴向布置的第一气缸组和第二气缸组，第一气缸组包括：第一气缸，具有：第一滑片滑槽；第一通孔，与第一滑片滑槽相连通，并沿第一气缸的于第一气缸的气缸壁上以接入高压气体；第一滑片，可移动地设置于第一滑片滑槽中并与偏心设置的第一滚子的外周面相抵接，第一滑片具有定位槽；锁止机构，锁止机构的上端部与第一通孔相连通，锁止机构的下端部可选择地接入高压气体或低压气体，以使得锁止机构具有伸入定位槽中以将第一滑片锁止在远离第一滚子的旋转中心的锁止位置或与定位槽相脱开的解锁位置；第二气缸组包括：第二气缸，设置有第二滑片滑槽；第二滑片，可移动地设置于第二滑片滑槽中并与偏心设置的第二滚子的外周面始终相抵接。In order to achieve the above object, according to an aspect of the present invention, a two-stage variable displacement compressor including a first cylinder group and a second cylinder group disposed along an axial direction of a two-stage variable displacement compressor, a first cylinder group is provided The first cylinder includes: a first sliding vane; a first through hole communicating with the first sliding chute and along the cylinder wall of the first cylinder on the first cylinder to access the high pressure gas; The first sliding piece is movably disposed in the first sliding vane and abuts against the outer peripheral surface of the eccentrically disposed first roller, the first sliding piece has a positioning groove, and the locking mechanism and the upper end of the locking mechanism Communicating with the first through hole, the lower end of the locking mechanism is selectively connected to the high pressure gas or the low pressure gas, so that the locking mechanism has a protruding into the positioning groove to be the first The sliding piece is locked at a locking position away from the rotation center of the first roller or an unlocking position disengaging from the positioning groove; the second cylinder group includes: a second cylinder provided with a second sliding groove; the second sliding The sheet is movably disposed in the second sliding vane and is always in contact with the outer peripheral surface of the eccentrically disposed second roller.

进一步地，锁止机构包括：销钉，销钉的上端部与第一通孔相连通，销钉的下端部可选择地接入高压气体或低压气体。Further, the locking mechanism includes a pin, the upper end of the pin is in communication with the first through hole, and the lower end of the pin is selectively connected to the high pressure gas or the low pressure gas.

进一步地，第一气缸具有：相连通的吸气口和主吸气口，销钉的下端部与吸气口相连通，吸气口可选择地接入高压气体或者低压气体；弹性件，抵接于销钉的下端部。Further, the first cylinder has: a suction port connected to the main suction port, a lower end portion of the pin is connected to the air inlet, and the air inlet is selectively connected to the high pressure gas or the low pressure gas; the elastic member is abutted At the lower end of the pin.

进一步地，第一气缸组还包括：法兰，设置于第一气缸的下方，法兰的对应于定位槽的位置开设有沿双级变容压缩机的轴向设置的安装槽，销钉可移动地设置于安装槽中。Further, the first cylinder group further includes: a flange disposed under the first cylinder, and a position of the flange corresponding to the positioning groove is provided with an axially disposed mounting groove along the two-stage variable displacement compressor, and the pin is movable The ground is placed in the installation slot.

进一步地，法兰具有法兰导气孔，法兰导气孔通过吸气口和第一滑片滑槽相连通。Further, the flange has a flange air guiding hole, and the flange air guiding hole communicates with the first sliding plate chute through the air inlet.

进一步地，第一气缸组还包括：下盖板，连接于法兰的底部，下盖板具有下盖板导气槽，吸气口通过法兰导气孔和下盖板导气槽与销钉的下端部连通。Further, the first cylinder group further includes: a lower cover plate connected to the bottom of the flange, the lower cover plate has a lower cover air guiding groove, and the suction port passes through the flange air guiding hole and the lower cover air guiding groove and the pin The lower end is connected.

进一步地，法兰的消音腔的侧壁上开设第三通孔，第三通孔与第二气缸的吸气口连通。Further, a third through hole is formed in the sidewall of the silencer cavity of the flange, and the third through hole communicates with the suction port of the second cylinder.

进一步地，第一气缸上还设有通孔，法兰上设有与法兰的消音腔相连通的连接孔，通孔与法兰的消音腔相连通。Further, the first cylinder is further provided with a through hole, and the flange is provided with a connecting hole communicating with the silencing cavity of the flange, and the through hole is in communication with the silencing cavity of the flange.

进一步地，法兰开设有第四通孔和第五通孔，下盖板具有下盖板导气槽，第四通孔通过第五通孔、第一气缸组的下盖板导气槽和销钉的下端部连通，第四通孔可选择地通入高压气体或者低压气体。Further, the flange is provided with a fourth through hole and a fifth through hole, the lower cover has a lower cover air guiding groove, the fourth through hole passes through the fifth through hole, the lower cover air guiding groove of the first cylinder group, and The lower end of the pin is in communication, and the fourth through hole is selectively open to a high pressure gas or a low pressure gas.

进一步地，第二气缸具有第六通孔，并沿第二气缸的径向方向设置于第二气缸的气缸壁上以接入高压气体，第六通孔与第二滑片滑槽相连通。Further, the second cylinder has a sixth through hole and is disposed on the cylinder wall of the second cylinder in a radial direction of the second cylinder to access the high pressure gas, and the sixth through hole communicates with the second sliding vane.

根据本发明的一个方面，还提供了另一种空调***，包括双级变容压缩机，双级变容压缩机为前述的双级变容压缩机。According to an aspect of the invention, there is also provided another air conditioning system comprising a two-stage variable capacity compressor, the two-stage variable capacity compressor being the aforementioned two-stage variable capacity compressor.

进一步地，空调***还包括与双级变容压缩机相连通的增焓装置、稳压装置和分液器，以及控制双级变容压缩机、增焓装置、稳压装置和分液器之间的管路的通断的阀门，以使得锁止机构的下端部可选择地接入高压气体或低压气体。Further, the air conditioning system further includes an augmentation device, a voltage regulator device, and a liquid separator connected to the two-stage variable-capacity compressor, and a two-stage variable-capacity compressor, a booster device, a voltage regulator device, and a liquid separator. The on and off valves of the intervening lines are such that the lower end of the locking mechanism is selectively connectable to high pressure gas or low pressure gas.

进一步地，阀门包括：阀门A，设置于与增焓装置的入口和分液器的入口之间的管路相连通的第一补气管路上；阀门B，设置于增焓装置的入口和分液器的入口之间的管路上，第一补气管路与阀门B和增焓装置的入口之间的管路相连通；阀门C，设置于双级变容压缩机的出口与稳压装置的入口之间的管路上，稳压装置的出口与第一气缸的吸气口相连通；阀门D，设置于稳压装置的入口和分液器的出口之间的管路上，稳压装置的入口与连通阀门C和阀门D之间的管路相连通；阀门E，设置于连通增焓装置的出口与双级变容压缩机之间的第二补气管路上，第二补气管路包括与第二气缸的进气口相连通的第三补气管路和与第一气缸组的法兰的消音腔相连通的第四补气管，阀门E设置于第四补气管上。 Further, the valve includes: a valve A disposed on the first supplemental gas line communicating with the line between the inlet of the augmentation device and the inlet of the dispenser; the valve B, disposed at the inlet and the liquid separation of the augmentation device On the line between the inlets of the device, the first gas supply line is in communication with the line between the valve B and the inlet of the augmentation device; the valve C is disposed at the inlet of the two-stage variable displacement compressor and the inlet of the pressure regulator In the pipeline between the outlet, the outlet of the stabilizing device is in communication with the suction port of the first cylinder; the valve D is disposed on the pipeline between the inlet of the stabilizing device and the outlet of the liquid separator, and the inlet of the stabilizing device The pipeline connecting the valve C and the valve D is in communication; the valve E is disposed on the second gas supply line between the outlet of the communication enhancement device and the two-stage variable displacement compressor, and the second gas supply line includes and the second A third supplemental gas line communicating with the inlet of the cylinder and a fourth supplemental gas line communicating with the muffler cavity of the flange of the first cylinder group, the valve E is disposed on the fourth supplemental gas pipe.

进一步地，阀门包括：阀门A，设置于与增焓装置的入口和分液器的入口之间的管路相连通的第一补气管路上；阀门B，设置于增焓装置的入口和分液器的入口之间的管路上，第一补气管路与阀门B和增焓装置的入口之间的管路相连通；阀门C，设置于双级变容压缩机的出口与稳压装置的入口之间的管路上；阀门D，设置于稳压装置的入口和分液器的出口之间的管路上，稳压装置的入口与连通阀门C和阀门D之间的管路相连通；其中，第一气缸的吸气口可选择地与稳压装置的出口或分液器的出口相连通。Further, the valve includes: a valve A disposed on the first supplemental gas line communicating with the line between the inlet of the augmentation device and the inlet of the dispenser; the valve B, disposed at the inlet and the liquid separation of the augmentation device On the line between the inlets of the device, the first gas supply line is in communication with the line between the valve B and the inlet of the augmentation device; the valve C is disposed at the inlet of the two-stage variable displacement compressor and the inlet of the pressure regulator a pipe between the inlet of the stabilizing device and the outlet of the liquid separator, and the inlet of the stabilizing device is connected to the pipe connecting the valve C and the valve D; The suction port of the first cylinder is selectively communicable with the outlet of the stabilizing device or the outlet of the dispenser.

进一步地，阀门包括：阀门F，为三通阀，设置于增焓装置的入口与分液器的入口之间的管路上，阀门F的出口与增焓装置的入口相连通，阀门F的第一入口与分液器的入口相连通，阀门F的第二入口与第一补气管路相连通；阀门G，为三通阀，设置于双级变容压缩机与分液器之间的管路上并与稳压装置的入口相连通，其中，阀门G的第一入口与双级变容压缩机的出口相连通，阀门G的第二入口与分液器的出口相连通，阀门G的出口与稳压装置的入口相连通，稳压装置的出口与第一气缸的吸气口相连通；阀门E，设置于连通增焓装置的出口与双级变容压缩机之间的第二补气管路上，第二补气管路包括与第二气缸的进气口相连通的第三补气管路和与第一气缸的排气口相连通的第四补气管，阀门E设置于第四补气管上。Further, the valve comprises: a valve F, which is a three-way valve, disposed on a line between the inlet of the augmentation device and the inlet of the dispenser, the outlet of the valve F is in communication with the inlet of the augmentation device, and the valve F is An inlet is connected to the inlet of the liquid separator, a second inlet of the valve F is in communication with the first gas supply line, and a valve G is a three-way valve, and is disposed between the two-stage variable displacement compressor and the liquid separator The road is connected to the inlet of the voltage stabilizing device, wherein the first inlet of the valve G is in communication with the outlet of the two-stage variable capacity compressor, the second inlet of the valve G is in communication with the outlet of the liquid separator, and the outlet of the valve G Connected to the inlet of the stabilizing device, the outlet of the stabilizing device is in communication with the intake port of the first cylinder; the valve E is disposed in the second supplemental pipe between the outlet of the connecting boosting device and the two-stage variable capacity compressor On the road, the second air supply line includes a third air supply line communicating with the air inlet of the second cylinder and a fourth air supply pipe communicating with the air outlet of the first cylinder, and the valve E is disposed on the fourth air supply pipe .

进一步地，阀门包括：阀门F，为三通阀，设置于增焓装置的入口与分液器的入口之间的管路上，阀门F的出口与增焓装置的入口相连通，阀门F的第一入口与分液器的入口相连通，阀门F的第二入口与第一补气管路相连通；阀门G，为三通阀，设置于双级变容压缩机与分液器之间的管路上并与稳压装置的入口相连通，其中，阀门G的第一入口与双级变容压缩机的出口相连通，阀门G的第二入口与分液器的出口相连通，阀门G的出口与稳压装置的入口相连通；其中，第一气缸的吸气口可选择地与稳压装置的出口或分液器的出口相连通。Further, the valve comprises: a valve F, which is a three-way valve, disposed on a line between the inlet of the augmentation device and the inlet of the dispenser, the outlet of the valve F is in communication with the inlet of the augmentation device, and the valve F is An inlet is connected to the inlet of the liquid separator, a second inlet of the valve F is in communication with the first gas supply line, and a valve G is a three-way valve, and is disposed between the two-stage variable displacement compressor and the liquid separator The road is connected to the inlet of the voltage stabilizing device, wherein the first inlet of the valve G is in communication with the outlet of the two-stage variable capacity compressor, the second inlet of the valve G is in communication with the outlet of the liquid separator, and the outlet of the valve G The inlet of the stabilizing device is in communication; wherein the suction port of the first cylinder is selectively in communication with the outlet of the stabilizing device or the outlet of the liquid separator.

应用本发明的技术方案，由于在第一气缸的气缸壁上开设有第一通孔，第一通孔处通入高压气体，因此锁止机构的上端部的气体压力为高压气体。锁止机构的下端部可选择地接入高压气体或低压气体，因此锁止机构的下端部的气体压力在高压气体和低压气体之间切换。锁止机构的所受的压力差为高压和低压的压差，进行高低压切换实现双级与单级变容模式稳定切换，解决现有技术中单双级变容切换可能存在的切换稳定性问题。According to the technical solution of the present invention, since the first through hole is opened in the cylinder wall of the first cylinder, the high pressure gas is introduced into the first through hole, and therefore the gas pressure at the upper end portion of the locking mechanism is high pressure gas. The lower end portion of the lock mechanism is selectively connected to the high pressure gas or the low pressure gas, so that the gas pressure at the lower end portion of the lock mechanism is switched between the high pressure gas and the low pressure gas. The pressure difference of the locking mechanism is the pressure difference between the high pressure and the low pressure, and the high and low voltage switching is implemented to realize the stable switching between the two-stage and single-stage variable capacity modes, and the switching stability of the single- and double-stage variable capacity switching in the prior art may be solved. problem.

附图说明DRAWINGS

构成本申请的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：The accompanying drawings, which are incorporated in the claims of the claims In the drawing:

图1示出了根据本发明的双级变容压缩机的第一个实施例的剖视图；Figure 1 shows a cross-sectional view of a first embodiment of a two-stage variable displacement compressor in accordance with the present invention;

图2示出了根据本发明的双级变容压缩机的第一个实施例的***图；Figure 2 shows an exploded view of a first embodiment of a two-stage variable displacement compressor in accordance with the present invention;

图3示出了根据本发明的双级变容压缩机的第二个实施例的***图；Figure 3 shows an exploded view of a second embodiment of a two-stage variable displacement compressor in accordance with the present invention;

图4示出了根据本发明的双级变容压缩机的第三个实施例的剖视图；Figure 4 is a cross-sectional view showing a third embodiment of a two-stage variable displacement compressor in accordance with the present invention;

图5示出了根据本发明的双级变容压缩机的第三个实施例的***图； Figure 5 shows an exploded view of a third embodiment of a two-stage variable displacement compressor in accordance with the present invention;

图6示出了根据本发明的空调***的第一个实施例的变容双级运行原理图；Figure 6 is a schematic diagram showing the varactor two-stage operation of the first embodiment of the air conditioning system according to the present invention;

图7示出了根据本发明的空调***的第一个实施例的变容单级运行原理图；Figure 7 is a schematic diagram showing the varactor single-stage operation of the first embodiment of the air conditioning system according to the present invention;

图8示出了根据本发明的空调***的第二个实施例的变容双级运行原理图；Figure 8 is a schematic diagram showing the varactor two-stage operation of the second embodiment of the air conditioning system according to the present invention;

图9示出了根据本发明的空调***的第二个实施例的变容单级运行原理图；Figure 9 is a schematic view showing a varactor single-stage operation of a second embodiment of the air conditioning system according to the present invention;

图10示出了根据本发明的空调***的第三个实施例的变容双级运行原理图；Figure 10 is a schematic diagram showing the varactor two-stage operation of the third embodiment of the air conditioning system according to the present invention;

图11示出了根据本发明的空调***的第三个实施例的变容单级运行原理图；Figure 11 is a schematic diagram showing the varactor single-stage operation of the third embodiment of the air conditioning system according to the present invention;

图12示出了根据本发明的空调***的第四个实施例的变容双级运行原理图；以及图13示出了根据本发明的空调***的第四个实施例的变容单级运行原理图。Figure 12 is a schematic diagram showing a variable-capacity two-stage operation of a fourth embodiment of an air conditioning system according to the present invention; and Figure 13 is a view showing a variable-capacity single-stage operation of a fourth embodiment of the air conditioning system according to the present invention. Schematic.

其中，上述附图包括以下附图标记：Wherein, the above figures include the following reference numerals:

10、第一气缸组；10. The first cylinder group;

11、第一气缸；11a、通孔；11, the first cylinder; 11a, through hole;

12、第一滑片滑槽；12a、第一通孔；12, a first sliding chute; 12a, a first through hole;

13a、主吸气口；13b、吸气口；13a, main suction port; 13b, suction port;

14、第一滑片；14. The first sliding piece;

15、定位槽；15. Positioning slot;

16、锁止机构；16a、销钉；16b、弹性件；16. Locking mechanism; 16a, pin; 16b, elastic member;

17、法兰；17a、法兰导气孔；17b、第四通孔；17c、第五通孔；17e、连接孔；17, flange; 17a, flange air hole; 17b, fourth through hole; 17c, fifth through hole; 17e, connecting hole;

18、安装槽；18, the installation slot;

19、下盖板；19a、下盖板导气槽；19. Lower cover plate; 19a, lower cover air guide groove;

20、第二气缸组；20. The second cylinder group;

21、第二气缸；22、第二滑片滑槽；23、第二滑片；24、第六通孔；21, the second cylinder; 22, the second sliding vane; 23, the second sliding piece; 24, the sixth through hole;

30、第一滚子；30. The first roller;

40、第二滚子；40, the second roller;

50、双级变容压缩机；50. Two-stage variable capacity compressor;

60、增焓装置；60. Increasing device;

70、稳压装置； 70, voltage regulator;

80、分液器。80, dispenser.

具体实施方式detailed description

需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

如图1至图4所示本发明提供了一种双级变容压缩机。As shown in Figures 1 to 4, the present invention provides a two-stage variable displacement compressor.

双级变容压缩机包括第一气缸组10和第二气缸组20，第一气缸组10和第二气缸组20沿双级变容压缩机的轴向布置。The two-stage variable displacement compressor includes a first cylinder group 10 and a second cylinder group 20, and the first cylinder group 10 and the second cylinder group 20 are arranged in the axial direction of the two-stage variable displacement compressor.

其中，第一气缸组10包括有第一气缸11，第一气缸11具有第一滑片滑槽12、第一通孔12a。第一通孔12a与第一滑片滑槽12相连通，第一通孔12a沿第一气缸11的径向方向设置于第一气缸11的气缸壁上以接入高压气体。第一滑片14可移动地设置于第一滑片滑槽12中并与偏心设置的第一滚子30的外周面相抵接，第一滑片14具有定位槽15。锁止机构16的上端部与第一通孔12a相连通，锁止机构16的下端部可选择地接入高压气体或低压气体，以使得锁止机构16具有伸入定位槽15中以将第一滑片锁止在远离第一滚子的旋转中心的锁止位置或与定位槽15相脱开的解锁位置。锁止机构16锁定第一滑片14后，第一气缸11空转不处于工作状态。锁止机构16脱离于第一滑片14后，第一滑片14抵紧于第一滚子30的外周面，第一气缸处于工作状态。The first cylinder group 10 includes a first cylinder 11 having a first vane chute 12 and a first through hole 12a. The first through hole 12a communicates with the first vane chute 12, and the first through hole 12a is disposed on the cylinder wall of the first cylinder 11 in the radial direction of the first cylinder 11 to access the high pressure gas. The first sliding piece 14 is movably disposed in the first sliding surface chute 12 and abuts against the outer circumferential surface of the eccentrically disposed first roller 30. The first sliding piece 14 has a positioning groove 15 . The upper end portion of the locking mechanism 16 communicates with the first through hole 12a, and the lower end portion of the locking mechanism 16 is selectively connected to the high pressure gas or the low pressure gas, so that the locking mechanism 16 has a penetration into the positioning groove 15 to A slide is locked in a locked position away from the center of rotation of the first roller or an unlocked position disengaged from the positioning groove 15. After the locking mechanism 16 locks the first sliding piece 14, the first cylinder 11 is idling not in an operating state. After the locking mechanism 16 is disengaged from the first sliding piece 14, the first sliding piece 14 abuts against the outer circumferential surface of the first roller 30, and the first cylinder is in an operating state.

第二气缸组20包括第二气缸21和第二滑片23。第二气缸21设置有第二滑片滑槽22，第二滑片23可移动地设置于第二滑片滑槽22中并与偏心设置的第二滚子40的外周面始终相抵接。第二气缸21在启动时及运行过程中，始终处于工作状态。The second cylinder group 20 includes a second cylinder 21 and a second slider 23. The second cylinder 21 is provided with a second vane chute 22, and the second vane 23 is movably disposed in the second vane chute 22 and is always in contact with the outer peripheral surface of the eccentrically disposed second roller 40. The second cylinder 21 is always in operation during startup and during operation.

由于在第一气缸11的气缸壁上开设有第一通孔12a，第一通孔12a处通入高压气体，因此锁止机构16的上端部的气体压力为高压气体。锁止机构16的下端部可选择地接入高压气体或低压气体，因此锁止机构16的下端部的气体压力在高压气体和低压气体之间切换。锁止机构16的所受的压力差为高压和低压的压差，进行高低压切换实现双级与单级变容模式稳定切换，解决现有技术中单双级变容切换可能存在的切换稳定性问题。Since the first through hole 12a is opened in the cylinder wall of the first cylinder 11, the high pressure gas is introduced into the first through hole 12a, and therefore the gas pressure at the upper end portion of the lock mechanism 16 is high pressure gas. The lower end portion of the lock mechanism 16 is selectively connected to the high pressure gas or the low pressure gas, so that the gas pressure at the lower end portion of the lock mechanism 16 is switched between the high pressure gas and the low pressure gas. The pressure difference of the locking mechanism 16 is the pressure difference between the high pressure and the low pressure, and the high-low voltage switching is performed to realize the stable switching between the two-stage and single-stage varactor modes, and the switching stability of the single- and double-stage varactor switching in the prior art can be solved. Sexual problems.

此外，第一滑片滑槽12与壳体高压连通，滑片尾部无需安装弹性件，且无需特别的供油通道即可满足滑片运行润滑的需求，滑片槽不存在积油导致功耗增大的隐患。高压气体或者低于气体通入锁止机构16的下端部进行压力切换，简化了锁止机构，降低了加工难度和生产成本。In addition, the first sliding vane 12 is in high-pressure communication with the casing, and the tail portion of the sliding blade does not need to be equipped with elastic members, and the special oil supply passage is needed to meet the lubrication requirement of the sliding piece, and the sliding oil does not have oil accumulation. Increased hidden dangers. The high-pressure gas or the lower end of the gas-passing locking mechanism 16 performs pressure switching, which simplifies the locking mechanism and reduces processing difficulty and production cost.

进一步地，锁止机构16包括销钉16a和弹性件16b。销钉16a的上端部与第一通孔12a相连通，销钉16a的下端部可选择地接入高压气体或低压气体。第一气缸11具有吸气口13b和主吸气口13a，销钉16a的下端部与吸气口13b相连通，吸气口13b可选择地接入高压气体或者低压气体。弹性件16b，抵接于销钉16a的下端部。弹性件16b设置于销钉16a的下方，可以给销钉16a提供一个向上的压力。本实施例中，销钉头部无需设置弹簧限位机构。 Further, the locking mechanism 16 includes a pin 16a and an elastic member 16b. The upper end portion of the pin 16a communicates with the first through hole 12a, and the lower end portion of the pin 16a is selectively connected to a high pressure gas or a low pressure gas. The first cylinder 11 has an intake port 13b and a main intake port 13a. The lower end portion of the pin 16a communicates with the intake port 13b, and the intake port 13b is selectively connected to a high pressure gas or a low pressure gas. The elastic member 16b abuts against the lower end portion of the pin 16a. The elastic member 16b is disposed below the pin 16a to provide an upward pressure to the pin 16a. In this embodiment, the pin head does not need to be provided with a spring limit mechanism.

如图1至图5所示，第一气缸组10还包括法兰17，法兰17设置于第一气缸11的下方，法兰17的对应于定位槽15的位置开设有沿双级变容压缩机的轴向设置的安装槽18，销钉16a可移动地设置于安装槽18中。As shown in FIG. 1 to FIG. 5, the first cylinder group 10 further includes a flange 17, and the flange 17 is disposed under the first cylinder 11, and the position of the flange 17 corresponding to the positioning groove 15 is opened along the two-stage variable capacity. An axially disposed mounting groove 18 of the compressor, the pin 16a is movably disposed in the mounting groove 18.

如图2所示，法兰17具有法兰导气孔17a，法兰导气孔17a通过吸气口13b和第一滑片滑槽12相连通。As shown in Fig. 2, the flange 17 has a flange air guiding hole 17a through which the flange air guiding hole 17a communicates with the first vane chute 12.

如图2所示，第一气缸组10还包括下盖板19，下盖板19连接于法兰17的底部，下盖板19具有下盖板导气槽19a，吸气口13b通过法兰导气孔17a和下盖板导气槽19a与销钉16a的下端部连通。As shown in FIG. 2, the first cylinder group 10 further includes a lower cover 19 connected to the bottom of the flange 17, and the lower cover 19 has a lower cover air guiding groove 19a, and the suction port 13b passes through the flange. The air guiding hole 17a and the lower cover air guiding groove 19a communicate with the lower end portion of the pin 16a.

进一步地，如图2所示，法兰17的消音腔的侧壁上开设第三通孔17d，第三通孔17d与第二气缸21的吸气口连通第三通孔17d。Further, as shown in FIG. 2, a third through hole 17d is defined in the sidewall of the muffler cavity of the flange 17, and the third through hole 17d communicates with the suction port of the second cylinder 21 through the third through hole 17d.

如图3所示，第一气缸11上还设有通孔11a，法兰17上设有与消音腔相连通的连接孔17e，通孔11a与法兰17的消音腔相连通。As shown in FIG. 3, the first cylinder 11 is further provided with a through hole 11a. The flange 17 is provided with a connecting hole 17e communicating with the silencing chamber, and the through hole 11a is in communication with the silencing chamber of the flange 17.

如图5所示，法兰17开设有第四通孔17b和第五通孔17c，下盖板19具有下盖板导气槽19a，第四通孔17b通过第五通孔17c、下盖板导气槽19a和销钉16a的下端部连通，第四通孔17b可选择地通入高压气体或者低压气体。As shown in FIG. 5, the flange 17 is provided with a fourth through hole 17b and a fifth through hole 17c, and the lower cover 19 has a lower cover air guiding groove 19a, and the fourth through hole 17b passes through the fifth through hole 17c and the lower cover. The plate air guiding groove 19a communicates with the lower end portion of the pin 16a, and the fourth through hole 17b is selectively connected to a high pressure gas or a low pressure gas.

进而地，如图2所示，第二气缸21具有第六通孔24，第六通孔24沿第二气缸21的径向方向设置于第二气缸21的气缸壁上以接入高压气体，第六通孔24与第二滑片滑槽22相连通。Further, as shown in FIG. 2, the second cylinder 21 has a sixth through hole 24, and the sixth through hole 24 is disposed on the cylinder wall of the second cylinder 21 in the radial direction of the second cylinder 21 to be connected to the high pressure gas. The sixth through hole 24 is in communication with the second vane chute 22.

本发明中还提供了一种空调***，包括双级变容压缩机50，双级变容压缩机为上述的双级变容压缩机。The present invention also provides an air conditioning system comprising a two-stage variable displacement compressor 50, which is the above two-stage variable displacement compressor.

如图6至图13所示，空调***还包括与双级变容压缩机50相连通的增焓装置60、稳压装置70和分液器80，以及控制双级变容压缩机50、增焓装置60、稳压装置70和分液器80之间的管路的通断的阀门，以使得锁止机构16的下端部可选择地接入高压气体或低压气体。As shown in FIG. 6 to FIG. 13, the air conditioning system further includes an augmentation device 60, a voltage regulator device 70, and a liquid separator 80 that are in communication with the two-stage variable capacity compressor 50, and a dual-stage variable capacity compressor 50. The on-off valve of the line between the device 60, the voltage regulator 70 and the liquid separator 80 is such that the lower end of the lock mechanism 16 is selectively connected to the high pressure gas or the low pressure gas.

具体地，如图1和图2所示，第一滑片滑槽12的尾部通过第一通孔12a与壳体内高压连通。吸气口13b与第一气缸11的吸气口13a连通，通过法兰导气孔17a和下盖板导气槽19a与装有弹性件16b的销钉16a的下端部连通。在双级运转模式下，销钉16a的上端部为壳体高压，销钉16a的下端部为第一气缸11即下气缸吸气压力，销钉16a所受的压力差为高压与低压的压差，销钉16a卸载，第一滑片14正常运行。Specifically, as shown in FIGS. 1 and 2, the tail portion of the first vane chute 12 is in high pressure communication with the inside of the casing through the first through hole 12a. The intake port 13b communicates with the intake port 13a of the first cylinder 11, and communicates with the lower end portion of the pin 16a to which the elastic member 16b is attached via the flange air guide hole 17a and the lower cover air guide groove 19a. In the two-stage operation mode, the upper end portion of the pin 16a is the housing high pressure, and the lower end portion of the pin 16a is the suction pressure of the first cylinder 11, that is, the lower cylinder, and the pressure difference between the pin 16a is the pressure difference between the high pressure and the low pressure, the pin 16a is unloaded, and the first slider 14 is normally operated.

在另一个实施例中的双级变容压缩机中，法兰17的消音腔的侧壁上开设第三通孔17d，第一气缸11的排气即一级缸的排气经由第三通孔17d与外置的增焓装置60连通，与增焓补气混合后通过第二气缸21的吸气口进入第二气缸21的吸气腔进行二级压缩。In the two-stage variable displacement compressor of another embodiment, the third through hole 17d is defined in the sidewall of the muffler cavity of the flange 17, and the exhaust of the first cylinder 11 is the exhaust of the first stage cylinder through the third pass. The hole 17d communicates with the external augmentation device 60, mixes with the enthalpy and supplements the air, and enters the suction chamber of the second cylinder 21 through the suction port of the second cylinder 21 for secondary compression.

在变容单级运转模式下，第一气缸11的吸气口13b的压力通过变容机切换为高压，即销钉16a的头部即上端部和销钉16a的尾部即下端部都是高压，销钉16a在弹簧力的作用下向上运动，锁住第一气缸11的第一滑片14，第一气缸11即下气缸卸载。 In the varactor single-stage operation mode, the pressure of the suction port 13b of the first cylinder 11 is switched to a high pressure by the varactor, that is, the head portion of the pin 16a, that is, the upper end portion and the tail portion of the pin 16a, that is, the lower end portion are high pressure, the pin The 16a moves upward under the action of the spring force to lock the first slide 14 of the first cylinder 11, and the first cylinder 11, that is, the lower cylinder, is unloaded.

如图4和图5所示，在本实施例中第一气缸11的第一滑片槽12的尾部通过第一通孔12a与壳体内高压连通。在法兰17上新增设第四通孔17b和第五通孔17c，其中第四通孔17b直接与外置的缓冲腔相连，通过第五通孔17c和下盖板导气槽19a相连，并与销钉16a的下端部连通。在双级运转模式下，销钉16a的头部即上端部为壳体高压，销钉16a的尾部即下端部为吸气压力，销钉16a所受的压力差为高压与低压的压差，销钉卸载，第一滑片14正常运行。一级缸的排气即第一气缸11的排气经由一级排气流通通道通过第二气缸21的吸气口进入上气缸吸气腔即第一气缸11吸气腔进行二级压缩。As shown in FIGS. 4 and 5, in the present embodiment, the tail portion of the first vane groove 12 of the first cylinder 11 is in high pressure communication with the inside of the casing through the first through hole 12a. A fourth through hole 17b and a fifth through hole 17c are newly added to the flange 17, wherein the fourth through hole 17b is directly connected to the external buffer chamber, and is connected to the lower cover air guiding groove 19a through the fifth through hole 17c. And communicating with the lower end of the pin 16a. In the two-stage operation mode, the head portion of the pin 16a, that is, the upper end portion is the housing high pressure, the tail portion of the pin 16a, that is, the lower end portion is the suction pressure, and the pressure difference between the pin 16a is the pressure difference between the high pressure and the low pressure, and the pin is unloaded. The first slide 14 operates normally. The exhaust gas of the first stage cylinder, that is, the exhaust gas of the first cylinder 11 passes through the primary exhaust gas flow passage through the intake port of the second cylinder 21 into the upper cylinder suction chamber, that is, the suction chamber of the first cylinder 11 for secondary compression.

在变容单级运转模式下，法兰17的第四通孔17b的压力通过变容机切换为高压，即销钉头部和销钉尾部都是高压，销钉在弹簧力的作用下向上运动，锁住下气缸滑片，下气缸卸载。In the variable capacity single-stage operation mode, the pressure of the fourth through hole 17b of the flange 17 is switched to a high pressure by the variable capacity machine, that is, the pin head and the pin tail are both high pressure, and the pin moves upward under the action of the spring force, the lock Stay in the cylinder slide and unload the lower cylinder.

可选地，如图6和图7所示，阀门包括：阀门A，设置于与增焓装置60的入口与分液器80的入口之间的管路相连通的第一补气管路上；阀门B，设置于增焓装置60的入口与分液器80的入口之间的管路上，第一补气管路与阀门B和增焓装置60的入口之间的管路相连通；阀门C，设置于双级变容压缩机50的出口与稳压装置70的入口之间的管路上，稳压装置70的出口与第一气缸11的吸气口13b相连通；阀门D，设置于稳压装置70的入口和分液器80的出口之间的管路上，稳压装置70的入口与连通阀门C和阀门D之间的管路相连通；阀门E，设置于连通增焓装置60的出口与双级变容压缩机50之间的第二补气管路上，第二补气管路包括与第二气缸21的进气口相连通的第三补气管路和与第一气缸11的排气口相连通的第四补气管，阀门E设置于第四补气管上。Optionally, as shown in FIG. 6 and FIG. 7, the valve includes: a valve A disposed on the first supplemental gas line communicating with the pipeline between the inlet of the augmentation device 60 and the inlet of the liquid separator 80; B, disposed on the line between the inlet of the augmentation device 60 and the inlet of the liquid separator 80, the first gas supply line is in communication with the line between the valve B and the inlet of the augmentation device 60; valve C, setting On the line between the outlet of the two-stage variable capacity compressor 50 and the inlet of the voltage regulator 70, the outlet of the voltage regulator 70 is in communication with the intake port 13b of the first cylinder 11; the valve D is disposed in the voltage regulator On the line between the inlet of the 70 and the outlet of the liquid separator 80, the inlet of the regulator 70 communicates with the line connecting the valve C and the valve D; the valve E is disposed at the outlet of the communication enhancing device 60 and The second supplemental gas line between the two-stage variable-capacity compressor 50 includes a third supplemental gas line communicating with the intake port of the second cylinder 21 and an exhaust port of the first cylinder 11 The fourth air supply pipe is connected, and the valve E is disposed on the fourth air supply pipe.

可选地，如图8和图9所示，阀门包括：阀门A，设置于与增焓装置60的入口与分液器80的入口之间的管路相连通的第一补气管路上；阀门B，设置于增焓装置60的入口与分液器80的入口之间的管路上，第一补气管路与阀门B和增焓装置60的入口之间的管路相连通；阀门C，设置于双级变容压缩机50的出口与稳压装置70的入口之间的管路上；阀门D，设置于稳压装置70的入口和分液器80的出口之间的管路上，稳压装置70的入口与连通阀门C和阀门D之间的管路相连通；其中，第一气缸11的吸气口13b可选择地与稳压装置70的出口或分液器80的出口相连通。Optionally, as shown in FIG. 8 and FIG. 9, the valve includes: a valve A disposed on the first supplemental gas line communicating with the pipeline between the inlet of the augmentation device 60 and the inlet of the liquid separator 80; B, disposed on the line between the inlet of the augmentation device 60 and the inlet of the liquid separator 80, the first gas supply line is in communication with the line between the valve B and the inlet of the augmentation device 60; valve C, setting On the line between the outlet of the two-stage variable capacity compressor 50 and the inlet of the voltage regulator 70; the valve D is disposed on the line between the inlet of the voltage regulator 70 and the outlet of the liquid separator 80, and the voltage regulator The inlet of 70 is in communication with a line connecting valve C and valve D; wherein the suction port 13b of the first cylinder 11 is selectively communicable with the outlet of the stabilizing device 70 or the outlet of the liquid separator 80.

如图6所示，变容双级运转模式打开时，阀门A、阀门D和阀门E开启，阀门B和阀门C关闭。第一滑片滑槽12的尾部为开放结构，与壳体的高压连通，用于锁定第一滑片14的销钉16a的下端部直接与一级缸即第一气缸11的吸气口13b连通。第一气缸11的吸气口13b通过阀门D的开启与吸气压力连通，销钉16a在高低压差的作用下向下运动，第一滑片14正常运行。第一气缸11经过压缩后形成的排气中压通过开启阀门E与经由阀门A的补气中压在增焓装置60中混合后进入第二气缸21的吸气口，第二气缸21压缩中压后形成的排气高压气体进入压缩机壳体内部至排气管排出至空调***中。实现变容双级运转模式。As shown in Figure 6, when the variable capacity two-stage operation mode is turned on, valve A, valve D, and valve E are opened, and valve B and valve C are closed. The tail portion of the first vane chute 12 has an open structure communicating with the high pressure of the casing, and the lower end portion of the pin 16a for locking the first vane 14 is directly connected to the first stage cylinder, that is, the intake port 13b of the first cylinder 11. . The suction port 13b of the first cylinder 11 communicates with the suction pressure through the opening of the valve D, and the pin 16a moves downward under the action of the high and low pressure difference, and the first slide 14 operates normally. The intermediate pressure of the exhaust gas formed by the compression of the first cylinder 11 through the opening valve E and the air supply pressure through the valve A are mixed in the augmentation device 60 and then enter the intake port of the second cylinder 21, and the second cylinder 21 is compressed. The exhaust high pressure gas formed after the pressure enters the inside of the compressor casing to the exhaust pipe and is discharged into the air conditioning system. Realize the variable capacity dual-stage operation mode.

如图7所示，变容单级运转模式打开时，阀门A、阀门D和阀门E关闭，阀门B和阀门C开启。第一滑片滑槽12的尾部为开放结构，与壳体的高压连通，用于锁定第一滑片14的销钉16a的下端部与第一气缸11的吸气口13b连通，第一气缸11的吸气口13b通过阀门C的开启与高压气体连通，销钉16a在弹性件16b即弹簧力的作用下向上运动，第一滑片14被销钉16a锁定，第一气缸11被卸载。低压气体经由阀门B进入第二气缸21的吸气口，第二气缸21压缩低压后形成的排气高压气体进入压缩机壳体内部至排气管排出至空调***中。实现变容单级运转模式。As shown in Figure 7, when the variable capacity single stage operating mode is open, valve A, valve D and valve E are closed, and valve B and valve C are open. The tail portion of the first vane chute 12 has an open structure communicating with the high pressure of the casing, and the lower end portion of the pin 16a for locking the first vane 14 communicates with the intake port 13b of the first cylinder 11, the first cylinder 11 The suction port 13b communicates with the high-pressure gas through the opening of the valve C, and the pin 16a moves upward under the action of the elastic member 16b, that is, the spring force, and the first sliding piece 14 is pinned. The nail 16a is locked and the first cylinder 11 is unloaded. The low-pressure gas enters the intake port of the second cylinder 21 via the valve B, and the exhaust high-pressure gas formed after the second cylinder 21 compresses the low pressure enters the inside of the compressor casing and is exhausted into the air-conditioning system. Achieve variable volume single-stage operation mode.

如图8所示，变容双级运转模式打开时，阀门A和阀门D开启，阀门B和阀门C关闭。第一滑片滑槽12的尾部为开放结构，与壳体的高压连通，用于锁定第一滑片14的销钉16a的下端部与一级缸即第一气缸11的吸气口13b不连通，而是通过阀门D的开启与吸气压力连通。销钉16a在高低压差的作用下向下运动，第一滑片14正常运行。第一气缸11的吸气口13b直接与分液器80连通，一级缸即第一气缸11经过压缩后形成的排气中压通过泵体隔板与经由阀门A的补气中压在增焓装置60中混合后进入第二气缸21的吸气口，第二气缸21的压缩中压后形成的排气高压气体进入压缩机壳体内部至排气管排出至空调***中。实现变容双级运转模式。As shown in Fig. 8, when the variable capacity two-stage operation mode is turned on, valve A and valve D are opened, and valve B and valve C are closed. The tail portion of the first vane chute 12 has an open structure communicating with the high pressure of the casing, and the lower end portion of the pin 16a for locking the first vane 14 is not in communication with the first stage cylinder, that is, the intake port 13b of the first cylinder 11. Instead, it is connected to the suction pressure through the opening of the valve D. The pin 16a moves downward under the action of the high and low pressure difference, and the first slide 14 operates normally. The intake port 13b of the first cylinder 11 is directly in communication with the liquid separator 80. The first-stage cylinder, that is, the exhaust medium pressure formed by the compression of the first cylinder 11 passes through the pump body partition plate and the qi pressure through the valve A increases. After mixing in the weir device 60, it enters the intake port of the second cylinder 21, and the exhaust high-pressure gas formed after the compression intermediate pressure of the second cylinder 21 enters the inside of the compressor casing and is exhausted into the air-conditioning system. Realize the variable capacity dual-stage operation mode.

如图9所示，变容单级运转模式打开时，阀门A和阀门D关闭，阀门B和阀门C开启。第一滑片滑槽12的尾部为开放结构，与壳体的高压连通，用于锁定第一滑片14的销钉16a的下端部与第一气缸11的吸气口13b不连通，而是通过阀门C的开启与高压气体连通，销钉16a在弹簧力的作用下向上运动，第一滑片14被销钉16a锁定，第一气缸11被卸载。第一气缸11的吸气口13b与分液器80连通，第一气缸11的低压气体与经由阀门B的低压气体进入高压级气缸吸气口，第二气缸21压缩低压后形成的排气高压气体进入压缩机壳体内部至排气管排出至空调***中。实现变容单级运转模式。As shown in Figure 9, when the variable capacity single stage operating mode is open, valve A and valve D are closed, and valve B and valve C are open. The tail portion of the first vane chute 12 is of an open structure, communicating with the high pressure of the casing, and the lower end portion of the pin 16a for locking the first sliding piece 14 is not in communication with the suction port 13b of the first cylinder 11, but passes through The opening of the valve C is in communication with the high pressure gas, the pin 16a is moved upward by the spring force, the first slide 14 is locked by the pin 16a, and the first cylinder 11 is unloaded. The air inlet 13b of the first cylinder 11 communicates with the liquid separator 80. The low pressure gas of the first cylinder 11 enters the high pressure stage cylinder suction port with the low pressure gas passing through the valve B, and the exhaust high pressure formed by the second cylinder 21 compresses the low pressure. The gas enters the interior of the compressor housing and exits the exhaust pipe to the air conditioning system. Achieve variable volume single-stage operation mode.

为了安装方便，上述实施例中可将阀门A和阀门B、阀门C和阀门D分别由三通阀或四通阀替代。具体设置如下：For the convenience of installation, the valve A and the valve B, the valve C and the valve D can be replaced by a three-way valve or a four-way valve, respectively, in the above embodiment. The specific settings are as follows:

可选地，阀门包括：阀门F，为三通阀，设置于增焓装置60的入口与分液器80的入口之间的管路上，阀门F的出口与增焓装置60的入口相连通，阀门F的第一入口与分液器80的入口相连通，阀门F的第二入口与第一补气管路相连通；阀门G，为三通阀，设置于双级变容压缩机50与分液器80之间的管路上并与稳压装置70的入口相连通，其中，阀门G的第一入口与双级变容压缩机50的出口相连通，阀门G的第二入口与分液器80的出口相连通，阀门G的出口与稳压装置70的入口相连通，稳压装置70的出口与第一气缸11的吸气口13b相连通；阀门E，设置于连通增焓装置60的出口与双级变容压缩机50之间的第二补气管路上，第二补气管路包括与第二气缸21的进气口相连通的第三补气管路和与第一气缸11的排气口相连通的第四补气管，阀门E设置于第四补气管上。Optionally, the valve comprises: a valve F, a three-way valve disposed on the line between the inlet of the augmentation device 60 and the inlet of the dispenser 80, the outlet of the valve F being in communication with the inlet of the augmentation device 60, The first inlet of the valve F is in communication with the inlet of the liquid separator 80, the second inlet of the valve F is in communication with the first gas supply line, and the valve G is a three-way valve disposed on the two-stage variable displacement compressor 50 and The conduit between the liquid reservoirs 80 is in communication with the inlet of the stabilizing device 70, wherein the first inlet of the valve G is in communication with the outlet of the two-stage variable displacement compressor 50, and the second inlet of the valve G is connected to the dispenser The outlet of the valve 80 is in communication, the outlet of the valve G is in communication with the inlet of the stabilizing device 70, the outlet of the stabilizing device 70 is in communication with the intake port 13b of the first cylinder 11, and the valve E is disposed in the communication enhancing device 60. The second supplemental gas line includes a third supplemental gas line communicating with the intake port of the second cylinder 21 and an exhaust gas with the first cylinder 11 on the second supplemental gas line between the outlet and the two-stage variable capacity compressor 50. The fourth air supply pipe connected to the mouth, the valve E is disposed on the fourth air supply pipe.

可选地，阀门包括：阀门F，为三通阀，设置于增焓装置60的入口与分液器80的入口之间的管路上，阀门F的出口与增焓装置60的入口相连通，阀门F的第一入口与分液器80的入口相连通，阀门F的第二入口与第一补气管路相连通；阀门G，为三通阀，设置于双级变容压缩机50与分液器80之间的管路上并与稳压装置70的入口相连通，其中，阀门G的第一入口与双级变容压缩机50的出口相连通，阀门G的第二入口与分液器80的出口相连通，阀门G的出口与稳压装置70的入口相连通；其中，第一气缸11的吸气口13b可选择地与稳压装置70的出口或分液器80的出口相连通。 Optionally, the valve comprises: a valve F, a three-way valve disposed on the line between the inlet of the augmentation device 60 and the inlet of the dispenser 80, the outlet of the valve F being in communication with the inlet of the augmentation device 60, The first inlet of the valve F is in communication with the inlet of the liquid separator 80, the second inlet of the valve F is in communication with the first gas supply line, and the valve G is a three-way valve disposed on the two-stage variable displacement compressor 50 and The conduit between the liquid reservoirs 80 is in communication with the inlet of the stabilizing device 70, wherein the first inlet of the valve G is in communication with the outlet of the two-stage variable displacement compressor 50, and the second inlet of the valve G is connected to the dispenser The outlet of the valve 80 is in communication, and the outlet of the valve G is in communication with the inlet of the stabilizing device 70; wherein the suction port 13b of the first cylinder 11 is selectively connectable to the outlet of the stabilizing device 70 or the outlet of the liquid separator 80 .

本发明采用双级增焓压缩技术保证低温制热量的同时，通过变容切换机构切换高低压实现双级与单级变容模式稳定切换提高空调***在轻工况下的能效。该技术方案能够提高双级变容压缩机在轻工况下运行时效率，弥补双级变容压缩机在轻负载时的能效缺陷，避免无法稳定切换到单级变容模式的隐患和卸载缸滑片槽积油的隐患。第一滑片滑槽12和第二滑片滑槽22均为开放结构，与壳体高压连通，可靠性更好。The invention adopts the two-stage enhanced enthalpy compression technology to ensure the low-temperature heating, and simultaneously switches the high-low voltage through the variable-capacity switching mechanism to realize the stable switching of the two-stage and single-stage varactor mode to improve the energy efficiency of the air-conditioning system under light working conditions. The technical solution can improve the efficiency of the two-stage variable capacity compressor under light working conditions, make up for the energy efficiency defect of the two-stage variable capacity compressor under light load, and avoid the hidden trouble and unloading cylinder which cannot be stably switched to the single-stage varactor mode. The hidden danger of oil in the sliding slot. The first sliding vane 12 and the second sliding chute 22 are both open structures and are connected to the casing at a high voltage for better reliability.

从以上的描述中，可以看出，本发明上述的实施例实现了如下技术效果：From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

由于在第一气缸11的气缸壁上开设有第一通孔12a，第一通孔12a处通入高压气体，因此锁止机构16的上端部的气体压力为高压气体。锁止机构16的下端部可选择地接入高压气体或低压气体，因此锁止机构16的下端部的气体压力在高压气体和低压气体之间切换，在有气体压差的条件下实现双级运行；在没有气体压差的条件下销钉锁定滑片，实现单级变容运行。锁止机构16的所受的压力差为高压和低压的压差，进行高低压切换实现双级与单级变容模式稳定切换，解决现有技术中单双级变容切换可能存在的切换稳定性问题。Since the first through hole 12a is opened in the cylinder wall of the first cylinder 11, the high pressure gas is introduced into the first through hole 12a, and therefore the gas pressure at the upper end portion of the lock mechanism 16 is high pressure gas. The lower end portion of the lock mechanism 16 is selectively connected to the high pressure gas or the low pressure gas, so that the gas pressure at the lower end portion of the lock mechanism 16 is switched between the high pressure gas and the low pressure gas, and the two stages are realized under the condition of the gas pressure difference. Operation; the pin locks the slide without a gas pressure differential for single-stage varactor operation. The pressure difference of the locking mechanism 16 is the pressure difference between the high pressure and the low pressure, and the high-low voltage switching is performed to realize the stable switching between the two-stage and single-stage varactor modes, and the switching stability of the single- and double-stage varactor switching in the prior art can be solved. Sexual problems.

以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

一种双级变容压缩机，包括沿所述双级变容压缩机的轴向布置的第一气缸组(10)和第二气缸组(20)，其特征在于，A two-stage variable displacement compressor comprising a first cylinder group (10) and a second cylinder group (20) arranged along an axial direction of the two-stage variable displacement compressor, characterized in that

所述第一气缸组(10)包括：The first cylinder group (10) includes:

第一气缸(11)，具有：第一滑片滑槽(12)；第一通孔(12a)，与第一滑片滑槽(12)相连通，并沿所述第一气缸(11)的于所述第一气缸(11)的气缸壁上以接入高压气体；The first cylinder (11) has: a first sliding vane (12); a first through hole (12a) communicating with the first sliding chute (12) and along the first cylinder (11) On the cylinder wall of the first cylinder (11) to access high pressure gas;

第一滑片(14)，可移动地设置于所述第一滑片滑槽(12)中并与偏心设置的第一滚子(30)的外周面相抵接，所述第一滑片(14)具有定位槽(15)；a first sliding piece (14) movably disposed in the first sliding plate chute (12) and abutting an outer peripheral surface of the eccentrically disposed first roller (30), the first sliding piece ( 14) having a positioning groove (15);

锁止机构(16)，所述锁止机构(16)的上端部与所述第一通孔(12a)相连通，所述锁止机构(16)的下端部可选择地接入高压气体或低压气体，以使得所述锁止机构(16)具有伸入所述定位槽(15)中以将所述第一滑片锁止在远离所述第一滚子的旋转中心的锁止位置或与所述定位槽(15)相脱开的解锁位置；a locking mechanism (16), an upper end portion of the locking mechanism (16) is in communication with the first through hole (12a), and a lower end portion of the locking mechanism (16) is selectively connected to a high pressure gas or a low pressure gas such that the locking mechanism (16) has a locking position that extends into the positioning groove (15) to lock the first sliding plate away from a center of rotation of the first roller or An unlocking position that is disengaged from the positioning groove (15);

所述第二气缸组(20)包括：The second cylinder group (20) includes:

第二气缸(21)，设置有第二滑片滑槽(22)；a second cylinder (21), provided with a second sliding vane (22);

第二滑片(23)，可移动地设置于所述第二滑片滑槽(22)中并与偏心设置的第二滚子(40)的外周面始终相抵接。The second sliding piece (23) is movably disposed in the second sliding piece chute (22) and is always in contact with the outer peripheral surface of the eccentrically disposed second roller (40).
根据权利要求1所述的双级变容压缩机，其特征在于，所述锁止机构(16)包括：The two-stage variable displacement compressor according to claim 1, wherein said locking mechanism (16) comprises:

销钉(16a)，所述销钉(16a)的上端部与所述第一通孔(12a)相连通，所述销钉(16a)的下端部可选择地接入高压气体或低压气体。A pin (16a), an upper end portion of the pin (16a) is in communication with the first through hole (12a), and a lower end portion of the pin (16a) is selectively connected to a high pressure gas or a low pressure gas.
根据权利要求2所述的双级变容压缩机，其特征在于，所述第一气缸(11)具有：The two-stage variable displacement compressor according to claim 2, wherein said first cylinder (11) has:

相连通的吸气口(13b)和主吸气口(13a)，所述销钉(16a)的下端部与所述吸气口(13b)相连通，所述吸气口(13b)可选择地接入高压气体或者低压气体；a communicating inlet (13b) and a main suction port (13a), the lower end of the pin (16a) is in communication with the suction port (13b), and the suction port (13b) is optionally Access to high pressure gas or low pressure gas;

弹性件(16b)，抵接于所述销钉(16a)的下端部。The elastic member (16b) abuts against the lower end portion of the pin (16a).
根据权利要求3所述的双级变容压缩机，其特征在于，所述第一气缸组(10)还包括：The two-stage variable displacement compressor according to claim 3, wherein the first cylinder group (10) further comprises:

法兰(17)，设置于所述第一气缸(11)的下方，所述法兰(17)的对应于所述定位槽(15)的位置开设有沿所述双级变容压缩机的轴向设置的安装槽(18)，所述销钉(16a)可移动地设置于所述安装槽(18)中。a flange (17) disposed under the first cylinder (11), and a position of the flange (17) corresponding to the positioning groove (15) is provided along the two-stage variable displacement compressor An axially disposed mounting groove (18), the pin (16a) being movably disposed in the mounting groove (18).
根据权利要求4所述的双级变容压缩机，其特征在于，The two-stage variable displacement compressor according to claim 4, wherein

所述法兰(17)具有法兰导气孔(17a)，所述法兰导气孔(17a)通过所述吸气口(13b)和所述第一滑片滑槽(12)相连通。The flange (17) has a flange air guiding hole (17a), and the flange air guiding hole (17a) communicates with the first sliding piece chute (12) through the air inlet (13b).
根据权利要求5所述的双级变容压缩机，其特征在于，所述第一气缸组(10)还包括： The two-stage variable displacement compressor according to claim 5, wherein the first cylinder group (10) further comprises:

下盖板(19)，连接于所述法兰(17)的底部，所述下盖板(19)具有下盖板导气槽(19a)，所述吸气口(13b)通过所述法兰导气孔(17a)和所述下盖板导气槽(19a)与所述销钉(16a)的下端部连通。a lower cover plate (19) connected to the bottom of the flange (17), the lower cover plate (19) having a lower cover air guiding groove (19a), and the suction port (13b) passes the method The blue air guiding hole (17a) and the lower cover air guiding groove (19a) communicate with the lower end portion of the pin (16a).
根据权利要求4所述的双级变容压缩机，其特征在于，所述法兰(17)的消音腔的侧壁上开设第三通孔(17d)，所述第三通孔(17d)与所述第二气缸(21)的吸气口连通。The two-stage variable displacement compressor according to claim 4, wherein a third through hole (17d) is formed in a sidewall of the silencing chamber of the flange (17), and the third through hole (17d) It is in communication with the intake port of the second cylinder (21).
根据权利要求4所述的双级变容压缩机，其特征在于，所述第一气缸(11)上还设有通孔(11a)，所述法兰(17)上设有与所述法兰(17)的消音腔相连通的连接孔(17e)，所述通孔(11a)与所述法兰(17)的消音腔相连通。The two-stage variable displacement compressor according to claim 4, wherein the first cylinder (11) is further provided with a through hole (11a), and the flange (17) is provided with the method The silencing chamber of the blue (17) is connected to the connecting hole (17e), and the through hole (11a) is in communication with the silencing chamber of the flange (17).
根据权利要求4所述的双级变容压缩机，其特征在于，所述法兰(17)开设有第四通孔(17b)和第五通孔(17c)，所述第一气缸组(10)的下盖板(19)具有下盖板导气槽(19a)，所述第四通孔(17b)通过所述第五通孔(17c)、所述下盖板导气槽(19a)和所述销钉(16a)的下端部连通，所述第四通孔(17b)可选择地通入高压气体或者低压气体。The two-stage variable displacement compressor according to claim 4, wherein the flange (17) is provided with a fourth through hole (17b) and a fifth through hole (17c), the first cylinder group ( The lower cover (19) of 10) has a lower cover air guiding groove (19a), and the fourth through hole (17b) passes through the fifth through hole (17c) and the lower cover air guiding groove (19a) And communicating with a lower end portion of the pin (16a), the fourth through hole (17b) selectively introducing a high pressure gas or a low pressure gas.
根据权利要求1所述的双级变容压缩机，其特征在于，所述第二气缸(21)具有第六通孔(24)，并沿所述第二气缸(21)的径向方向设置于所述第二气缸(21)的气缸壁上以接入高压气体，所述第六通孔(24)与所述第二滑片滑槽(22)相连通。The two-stage variable displacement compressor according to claim 1, wherein said second cylinder (21) has a sixth through hole (24) and is disposed along a radial direction of said second cylinder (21) The cylinder wall of the second cylinder (21) is connected to the high pressure gas, and the sixth through hole (24) is in communication with the second vane chute (22).
一种空调***，其特征在于，包括双级变容压缩机(50)，所述双级变容压缩机为权利要求1至10中任一项所述的双级变容压缩机。An air conditioning system comprising a two-stage variable capacity compressor (50), the two-stage variable capacity compressor being the two-stage variable capacity compressor of any one of claims 1 to 10.
根据权利要求11所述的空调***，其特征在于，所述空调***还包括与所述双级变容压缩机(50)相连通的增焓装置(60)、稳压装置(70)和分液器(80)，以及控制所述双级变容压缩机(50)、增焓装置(60)、稳压装置(70)和分液器(80)之间的管路的通断的阀门，以使得所述锁止机构(16)的下端部可选择地接入高压气体或低压气体。The air conditioning system according to claim 11, wherein said air conditioning system further comprises a sputum device (60), a voltage stabilizing device (70) and a minute connected to said two-stage varactor (50) a liquid device (80), and a valve for controlling the opening and closing of the pipeline between the two-stage variable capacity compressor (50), the enthalpy device (60), the voltage stabilizing device (70), and the liquid separator (80) So that the lower end of the locking mechanism (16) is selectively connected to a high pressure gas or a low pressure gas.
根据权利要求12所述的空调***，其特征在于，所述阀门包括：The air conditioning system of claim 12 wherein said valve comprises:

阀门A，设置于与所述增焓装置(60)的入口和所述分液器(80)的入口之间的管路相连通的第一补气管路上；a valve A disposed on the first supplemental gas line communicating with the line between the inlet of the augmentation device (60) and the inlet of the liquid separator (80);

阀门B，设置于所述增焓装置(60)的入口和所述分液器(80)的入口之间的管路上，所述第一补气管路与所述阀门B和所述增焓装置(60)的入口之间的管路相连通；a valve B disposed on a line between an inlet of the augmentation device (60) and an inlet of the liquid separator (80), the first gas supply line and the valve B and the augmentation device (60) the pipeline between the inlets is connected;

阀门C，设置于所述双级变容压缩机(50)的出口与稳压装置(70)的入口之间的管路上，所述稳压装置(70)的出口与所述第一气缸(11)的吸气口(13b)相连通；a valve C disposed on a line between an outlet of the two-stage variable capacity compressor (50) and an inlet of the voltage stabilizing device (70), an outlet of the voltage stabilizing device (70) and the first cylinder ( 11) the suction port (13b) is connected;

阀门D，设置于所述稳压装置(70)的入口和所述分液器(80)的出口之间的管路上，所述稳压装置(70)的入口与连通所述阀门C和所述阀门D之间的管路相连通；a valve D disposed on a line between an inlet of the stabilizing device (70) and an outlet of the liquid separator (80), an inlet of the stabilizing device (70) and a communication between the valve C and the The pipeline between the valves D is connected;

阀门E，设置于连通所述增焓装置(60)的出口与所述双级变容压缩机(50)之间的第二补气管路上，所述第二补气管路包括与所述第二气缸(21)的进气口相连通的第三补气管路和与所述第一气缸组(10)的法兰(17)的消音腔相连通的第四补气管，所述阀门E设置于所述第四补气管上。a valve E disposed on a second supplemental gas line connecting the outlet of the augmentation device (60) and the two-stage variable capacity compressor (50), the second supplemental gas line including the second a third supplemental gas line communicating with the inlet of the cylinder (21) and a fourth supplemental gas line communicating with the muffler chamber of the flange (17) of the first cylinder group (10), A valve E is disposed on the fourth supplemental gas pipe.
根据权利要求12所述的空调***，其特征在于，所述阀门包括：The air conditioning system of claim 12 wherein said valve comprises:

阀门A，设置于与所述增焓装置(60)的入口和所述分液器(80)的入口之间的管路相连通的第一补气管路上；a valve A disposed on the first supplemental gas line communicating with the line between the inlet of the augmentation device (60) and the inlet of the liquid separator (80);

阀门B，设置于所述增焓装置(60)的入口和所述分液器(80)的入口之间的管路上，所述第一补气管路与所述阀门B和所述增焓装置(60)的入口之间的管路相连通；a valve B disposed on a line between an inlet of the augmentation device (60) and an inlet of the liquid separator (80), the first gas supply line and the valve B and the augmentation device (60) the pipeline between the inlets is connected;

阀门C，设置于所述双级变容压缩机(50)的出口与稳压装置(70)的入口之间的管路上；a valve C disposed on a pipeline between an outlet of the two-stage variable capacity compressor (50) and an inlet of the voltage stabilizing device (70);

阀门D，设置于所述稳压装置(70)的入口和所述分液器(80)的出口之间的管路上，稳压装置(70)的入口与连通所述阀门C和所述阀门D之间的管路相连通；a valve D disposed on a line between an inlet of the stabilizing device (70) and an outlet of the liquid separator (80), an inlet of the stabilizing device (70) and a communication between the valve C and the valve The pipeline between D is connected;

其中，所述第一气缸(11)的吸气口(13b)可选择地与所述稳压装置(70)的出口或所述分液器(80)的出口相连通。Wherein, the air inlet (13b) of the first cylinder (11) is selectively in communication with an outlet of the voltage stabilizing device (70) or an outlet of the liquid separator (80).
根据权利要求12所述的空调***，其特征在于，所述阀门包括：The air conditioning system of claim 12 wherein said valve comprises:

阀门F，为三通阀，设置于所述增焓装置(60)的入口与所述分液器(80)的入口之间的管路上，所述阀门F的出口与所述增焓装置(60)的入口相连通，所述阀门F的第一入口与所述分液器(80)的入口相连通，所述阀门F的第二入口与第一补气管路相连通；a valve F, which is a three-way valve, is disposed on a line between an inlet of the augmentation device (60) and an inlet of the liquid separator (80), an outlet of the valve F and the augmentation device ( The inlet of 60) is in communication, the first inlet of the valve F is in communication with the inlet of the liquid separator (80), and the second inlet of the valve F is in communication with the first supplemental gas line;

阀门G，为三通阀，设置于所述双级变容压缩机(50)与所述分液器(80)之间的管路上并与所述稳压装置(70)的入口相连通，其中，所述阀门G的第一入口与所述双级变容压缩机(50)的出口相连通，所述阀门G的第二入口与所述分液器(80)的出口相连通，所述阀门G的出口与所述稳压装置(70)的入口相连通，所述稳压装置(70)的出口与所述第一气缸(11)的吸气口(13b)相连通；a valve G, which is a three-way valve, is disposed on a pipeline between the two-stage variable displacement compressor (50) and the liquid separator (80) and communicates with an inlet of the voltage stabilizing device (70). Wherein the first inlet of the valve G is in communication with the outlet of the two-stage variable capacity compressor (50), and the second inlet of the valve G is in communication with the outlet of the liquid separator (80). An outlet of the valve G is in communication with an inlet of the stabilizing device (70), and an outlet of the stabilizing device (70) is in communication with an intake port (13b) of the first cylinder (11);

阀门E，设置于连通所述增焓装置(60)的出口与所述双级变容压缩机(50)之间的第二补气管路上，所述第二补气管路包括与所述第二气缸(21)的进气口相连通的第三补气管路和与所述第一气缸(11)的排气口相连通的第四补气管，所述阀门E设置于所述第四补气管上。a valve E disposed on a second supplemental gas line connecting the outlet of the augmentation device (60) and the two-stage variable capacity compressor (50), the second supplemental gas line including the second a third supplemental gas line communicating with the inlet of the cylinder (21) and a fourth supplemental gas line communicating with the exhaust port of the first cylinder (11), the valve E being disposed on the fourth supplemental gas pipe on.
根据权利要求12所述的空调***，其特征在于，所述阀门包括：The air conditioning system of claim 12 wherein said valve comprises:

阀门F，为三通阀，设置于所述增焓装置(60)的入口与所述分液器(80)的入口之间的管路上，所述阀门F的出口与所述增焓装置(60)的入口相连通，所述阀门F的第一入口与所述分液器(80)的入口相连通，所述阀门F的第二入口与第一补气管路相连通；a valve F, which is a three-way valve, is disposed on a line between an inlet of the augmentation device (60) and an inlet of the liquid separator (80), an outlet of the valve F and the augmentation device ( The inlet of 60) is in communication, the first inlet of the valve F is in communication with the inlet of the liquid separator (80), and the second inlet of the valve F is in communication with the first supplemental gas line;

阀门G，为三通阀，设置于所述双级变容压缩机(50)与所述分液器(80)之间的管路上并与所述稳压装置(70)的入口相连通，其中，所述阀门G的第一入口与所述双级变容压缩机(50)的出口相连通，所述阀门G的第二入口与所述分液器(80)的出口相连通，所述阀门G的出口与所述稳压装置(70)的入口相连通；a valve G, which is a three-way valve, is disposed between the two-stage variable displacement compressor (50) and the liquid separator (80) a conduit communicating with an inlet of the stabilizing device (70), wherein a first inlet of the valve G is in communication with an outlet of the two-stage varactor (50), the valve G a second inlet is in communication with an outlet of the liquid separator (80), and an outlet of the valve G is in communication with an inlet of the voltage stabilizing device (70);

其中，所述第一气缸(11)的吸气口(13b)可选择地与所述稳压装置(70)的出口或所述分液器(80)的出口相连通。 Wherein, the air inlet (13b) of the first cylinder (11) is selectively in communication with an outlet of the voltage stabilizing device (70) or an outlet of the liquid separator (80).