CN106762660A - A kind of compressor main shaft and the compressor with it - Google Patents
A kind of compressor main shaft and the compressor with it Download PDFInfo
- Publication number
- CN106762660A CN106762660A CN201710107704.2A CN201710107704A CN106762660A CN 106762660 A CN106762660 A CN 106762660A CN 201710107704 A CN201710107704 A CN 201710107704A CN 106762660 A CN106762660 A CN 106762660A
- Authority
- CN
- China
- Prior art keywords
- hole
- main shaft
- oil
- compressor
- back pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000694 effects Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 238
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000007704 transition Effects 0.000 description 6
- 230000004308 accommodation Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/60—Shafts
- F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Safety Valves (AREA)
Abstract
本发明提供一种压缩机主轴和具有其的压缩机,压缩机主轴包括位于其内部沿轴向方向的主轴中心孔(1)、以及沿径向方向与主轴中心孔(1)相连通的主轴径向油孔(2);在主轴中心孔(1)的上部设置有油塞(3),且在主轴中心孔(1)中、位于油塞(3)与主轴径向油孔(2)之间还设置阀组件(4);阀组件设置为:当主轴中心孔中的油压大于阀组件所提供的背压时,阀组件打开、以容许油从主轴中心孔中流至油塞(3);当主轴中心孔中的油压小于阀组件所提供的背压时,阀组件关闭、以阻止油从主轴中心孔中流至油塞(3)。通过本发明能够使得在主轴转速不一致的情况下最终进入主轴径向油孔的背压油的背压也能达到稳定、不会产生背压波动。
The present invention provides a compressor main shaft and a compressor having the same. The compressor main shaft includes a main shaft center hole (1) inside the compressor along the axial direction, and a main shaft communicated with the main shaft center hole (1) along the radial direction. Radial oil hole (2); an oil plug (3) is arranged on the upper part of the main shaft center hole (1), and in the main shaft center hole (1), it is located between the oil plug (3) and the main shaft radial oil hole (2) A valve assembly (4) is also arranged between them; the valve assembly is set to: when the oil pressure in the center hole of the main shaft is greater than the back pressure provided by the valve assembly, the valve assembly is opened to allow oil to flow from the center hole of the main shaft to the oil plug (3 ); when the oil pressure in the center hole of the main shaft is less than the back pressure provided by the valve assembly, the valve assembly is closed to prevent oil from flowing from the center hole of the main shaft to the oil plug (3). Through the present invention, the back pressure of the back pressure oil that finally enters the radial oil hole of the main shaft can be stabilized even when the rotational speed of the main shaft is inconsistent, and no back pressure fluctuation will occur.
Description
技术领域technical field
本发明属于压缩机技术领域,具体涉及一种压缩机主轴和具有其的压缩机。The invention belongs to the technical field of compressors, and in particular relates to a compressor main shaft and a compressor with the same.
背景技术Background technique
目前传统滑片式压缩机滑片背压油路中,背压油通过泵体底部的油泵旋转泵油进入主轴中心孔,进入主轴中心孔的油借助主轴旋转带来的离心力作用进入到主轴的径向油孔,最后经过间隙通道进入滑片背压槽,为滑片提供背压,且主轴中心孔上端安装有控制油出口流量的油塞,能一定程度上防止油直接从主轴中心孔上端流失。At present, in the back pressure oil circuit of the traditional sliding vane compressor, the back pressure oil enters the center hole of the main shaft through the oil pump at the bottom of the pump body, and the oil entering the center hole of the main shaft enters into the center hole of the main shaft by the centrifugal force brought by the rotation of the main shaft. The radial oil hole finally enters the back pressure groove of the slide through the clearance channel to provide back pressure for the slide, and an oil plug is installed on the upper end of the center hole of the spindle to control the flow of oil outlet, which can prevent oil from directly flowing from the upper end of the center hole of the spindle to a certain extent. drain.
但是,由于油泵是容积泵,随着压缩机转速的提升,油泵的泵油量也会增加,这会导致在压缩高速运行时,油的泵油量会大大增加,虽然油塞有节流效果,但由于其孔径是一定的,即当油泵泵油量不一致时,油塞不能对主轴中心孔中的油进行压力调控,会使进入背压槽的油压不一致,产生背压波动;However, since the oil pump is a positive displacement pump, as the speed of the compressor increases, the pumped oil volume of the oil pump will also increase, which will greatly increase the pumped oil volume when the compression runs at high speed, although the oil plug has a throttling effect , but because its pore diameter is fixed, that is, when the oil volume of the oil pump is inconsistent, the oil plug cannot regulate the pressure of the oil in the center hole of the main shaft, which will cause the oil pressure entering the back pressure groove to be inconsistent, resulting in back pressure fluctuations;
油塞孔径难以确认,若油塞孔径过大,则会导致主轴中心孔的油大部分从主轴上端流失,无法为滑片提供背压,若油塞孔径过小,则会使主轴中心孔的油压过大,造成背压增加,会使滑片头部功耗增加,造成压缩机能效降低;It is difficult to confirm the hole diameter of the oil plug. If the hole diameter of the oil plug is too large, most of the oil in the center hole of the spindle will be lost from the upper end of the spindle, which cannot provide back pressure for the sliding plate. If the hole diameter of the oil plug is too small, the oil in the center hole of the spindle will be lost. Excessive oil pressure will increase the back pressure, which will increase the power consumption of the slider head and reduce the energy efficiency of the compressor;
单纯靠主轴离心力使主轴中心孔中的油进入主轴径向孔的方式不可靠,在压缩机低速运行时,由于主轴中心孔孔径有限,离心力有限,且间隙通道流阻大,会使油大部分从主轴上端流失,而不会走流阻大的主轴径向孔,造成背压供油不足;It is unreliable to rely solely on the centrifugal force of the main shaft to make the oil in the central hole of the main shaft enter the radial hole of the main shaft. When the compressor is running at low speed, due to the limited diameter of the central hole of the main shaft, the limited centrifugal force, and the large flow resistance of the gap channel, most of the oil will The oil is drained from the upper end of the main shaft, instead of going through the radial hole of the main shaft with large flow resistance, resulting in insufficient back pressure oil supply;
由于现有技术中的滑片式压缩机的背压油存在背压波动、背压不稳定,不能提供充足的背压油等技术问题,因此本发明研究设计出一种压缩机主轴和具有其的压缩机。Since the back pressure oil of the vane compressor in the prior art has technical problems such as back pressure fluctuations, back pressure instability, and insufficient back pressure oil, the present invention researches and designs a compressor main shaft and its of the compressor.
发明内容Contents of the invention
因此,本发明要解决的技术问题在于克服现有技术中的压缩机的背压油存在背压波动、背压不稳定,不能提供充足的背压油的缺陷,从而提供一种压缩机主轴和具有其的压缩机。Therefore, the technical problem to be solved by the present invention is to overcome the defects of the back pressure oil of the compressor in the prior art that the back pressure fluctuates, the back pressure is unstable, and cannot provide sufficient back pressure oil, thereby providing a compressor shaft and Compressor with it.
本发明提供一种压缩机主轴,其包括位于其内部沿轴向方向开设的主轴中心孔、以及沿径向方向与所述主轴中心孔相连通的主轴径向油孔;The present invention provides a compressor main shaft, which includes a main shaft central hole opened in the axial direction and a main shaft radial oil hole connected to the main shaft central hole along the radial direction;
在所述主轴中心孔的上部设置有油塞,且在所述主轴中心孔中、位于所述油塞与所述主轴径向油孔之间还设置有阀组件;An oil plug is provided on the upper part of the central hole of the main shaft, and a valve assembly is also provided in the central hole of the main shaft between the oil plug and the radial oil hole of the main shaft;
所述阀组件设置成为:当所述主轴中心孔中的油压大于所述阀组件所提供的背压时,所述阀组件打开、以容许油从所述主轴中心孔中流至所述油塞;当所述主轴中心孔中的油压小于所述阀组件所提供的背压时,所述阀组件关闭、以阻止油从所述主轴中心孔中流至所述油塞。The valve assembly is configured such that when the oil pressure in the central hole of the main shaft is greater than the back pressure provided by the valve assembly, the valve assembly opens to allow oil to flow from the central hole of the main shaft to the oil plug ; when the oil pressure in the central hole of the main shaft is lower than the back pressure provided by the valve assembly, the valve assembly is closed to prevent oil from flowing from the central hole of the main shaft to the oil plug.
优选地,所述阀组件包括阀体和弹性组件,所述阀体可沿主轴轴向移动以打开所述主轴中心孔的流路和关闭该流路;所述弹性组件的下端连接至所述阀体上、上端连接至所述油塞。Preferably, the valve assembly includes a valve body and an elastic assembly, the valve body can move axially along the main shaft to open and close the flow path of the central hole of the main shaft; the lower end of the elastic assembly is connected to the The upper end of the valve body is connected to the oil plug.
优选地,所述阀体为球阀。Preferably, the valve body is a ball valve.
优选地,所述弹性组件为弹簧,所述弹簧的刚度系数为K,其被所述阀体和所述油塞相向地压缩的位移量定义为X,产生的弹簧背压力F=K*X。Preferably, the elastic component is a spring, the stiffness coefficient of the spring is K, the displacement amount of which is compressed by the valve body and the oil plug is defined as X, and the generated spring back pressure F=K*X .
优选地,所述主轴中心孔包括主孔和与所述主孔上端相连的两段以上不同内径的阶梯孔,且所述阀体位于所述阶梯孔中的第一阶梯孔的位置处,且该第一阶梯孔为上部孔径比下部的孔径大的孔,所述阀体向下运动时能卡止于所述第一阶梯孔的位置处。Preferably, the central hole of the main shaft includes a main hole and more than two stepped holes with different inner diameters connected to the upper end of the main hole, and the valve body is located at the position of the first stepped hole in the stepped holes, and The first stepped hole is a hole whose upper hole diameter is larger than that of the lower hole, and the valve body can be locked at the position of the first stepped hole when it moves downward.
优选地,所述第一阶梯孔为沿轴向上至下内径逐渐减小的、沿轴向截面形状成喇叭口形状的圆台孔。Preferably, the first stepped hole is a conical hole whose inner diameter gradually decreases from top to bottom in the axial direction, and whose cross-section in the axial direction is shaped like a bell mouth.
优选地,所述阶梯孔还包括容纳所述弹性组件的弹簧容纳孔,所述弹簧容纳孔上端与所述油塞下端相接、下端与所述第一阶梯孔相接,且所述弹簧容纳孔为圆柱孔、其内径与所述圆台孔上端的内径相同。Preferably, the stepped hole further includes a spring accommodating hole for accommodating the elastic assembly, the upper end of the spring accommodating hole is in contact with the lower end of the oil plug, the lower end is in contact with the first stepped hole, and the spring accommodating hole The hole is a cylindrical hole whose inner diameter is the same as that of the upper end of the frustum hole.
优选地,所述阶梯孔还包括位于所述圆台孔下端且与所述圆台孔相接的圆柱形的过渡孔,所述过渡孔的内径与所述圆台孔下端的内径相同,且小于所述主孔的内径。Preferably, the stepped hole further includes a cylindrical transition hole located at the lower end of the frustum hole and connected to the frustum hole, the inner diameter of the transition hole is the same as the inner diameter of the lower end of the frustum hole, and smaller than the The inner diameter of the main hole.
优选地,所述油塞为套筒式结构,包括位于其下部的能够容纳所述弹性组件进入的容纳空间、以及位于其上端部的用于抵靠所述弹性组件的上端部。Preferably, the oil plug is a sleeve-type structure, including an accommodating space at its lower part that can accommodate the elastic component, and an upper end at its upper end for abutting against the elastic component.
优选地,所述油塞的上端部设置有与所述容纳空间相连通的能够排出油的溢出孔,所述容纳空间呈圆柱形状、且所述溢出孔的孔径小于所述容纳空间的直径。Preferably, the upper end of the oil plug is provided with an overflow hole communicating with the accommodating space, the accommodating space is cylindrical in shape, and the diameter of the overflow hole is smaller than the diameter of the accommodating space.
优选地,套筒式的所述油塞的周向外壁设置有外螺纹,所述主轴中心孔上端的内壁上设置有能与所述外螺纹相匹配作用的内螺纹。Preferably, the peripheral outer wall of the sleeve-type oil plug is provided with external threads, and the inner wall at the upper end of the central hole of the main shaft is provided with internal threads capable of matching with the external threads.
优选地,还包括设置于主轴下端的能与油泵进行匹配相接的油泵连接头。Preferably, it also includes an oil pump connector arranged at the lower end of the main shaft and capable of matching with the oil pump.
本发明还提供一种压缩机,其包括前述的压缩机主轴。The present invention also provides a compressor, which includes the aforementioned compressor main shaft.
优选地,所述压缩机为滑片式压缩机。Preferably, the compressor is a vane compressor.
本发明提供的一种压缩机主轴和具有其的压缩机具有如下有益效果:A compressor main shaft provided by the present invention and a compressor having the same have the following beneficial effects:
1.本发明的一种压缩机主轴和具有其的压缩机,通过在主轴中心孔中油塞与主轴径向油孔之间的位置设置阀组件,使得当油压大于阀组件背压时打开阀组件以泄压,当油压小于阀组件背压时关闭阀组件停止泄压,能够使得在主轴转速不一致的情况下最终进入主轴径向油孔的背压油的背压也能达到稳定、不会产生背压波动,不会由于背压过小而供油不足,同时也不会由于背压过大而导致从油塞上端流失而使得供油不足、或背压过大而进入气缸(优选滑片头部)的压力功耗增加而导致压缩机能效降低的情况发生;1. A compressor main shaft of the present invention and the compressor with it, by setting a valve assembly at the position between the oil plug in the central hole of the main shaft and the radial oil hole of the main shaft, the valve is opened when the oil pressure is greater than the back pressure of the valve assembly When the oil pressure is lower than the back pressure of the valve assembly, close the valve assembly to stop the pressure relief, so that the back pressure of the back pressure oil that finally enters the radial oil hole of the spindle can be stable and stable even when the spindle speed is inconsistent. There will be back pressure fluctuations, and there will be no insufficient oil supply due to too small back pressure, and at the same time, it will not cause insufficient oil supply due to loss from the upper end of the oil plug due to excessive back pressure, or excessive back pressure and enter the cylinder (preferably Sliding vane head) the increase of pressure power consumption leads to the decrease of energy efficiency of the compressor;
2.本发明的压缩机主轴和具有其的压缩机,通过设计一定的弹簧刚度和压缩量能够控制获得所需的背压力的大小,从而有效地实现对主轴中心孔中的油进行精确压力调控的目的;2. The compressor main shaft of the present invention and the compressor with it can control the size of the required back pressure by designing a certain spring stiffness and compression, thereby effectively realizing precise pressure regulation of the oil in the central hole of the main shaft the goal of;
3.本发明的压缩机主轴和具有其的压缩机,在压缩机低速运行、低离心力时,也能保证充足的油量进入主轴径向油孔,保证充足的背压、提供充足的背压油。3. The compressor spindle of the present invention and the compressor with it can also ensure sufficient oil flow into the radial oil holes of the spindle when the compressor is running at low speed and low centrifugal force, ensuring sufficient back pressure and providing sufficient back pressure Oil.
附图说明Description of drawings
图1是本发明的压缩机的爆炸结构示意图;Fig. 1 is the explosion structure schematic diagram of compressor of the present invention;
图2是本发明的压缩机泵体主轴部分在阀组件位于第一状态位置时的内部剖视图;Fig. 2 is an internal cross-sectional view of the main shaft part of the compressor pump body of the present invention when the valve assembly is in the first state position;
图3是图2中的A部分的局部放大结构示意图;Fig. 3 is a partially enlarged structural schematic diagram of part A in Fig. 2;
图4是本发明的压缩机泵体主轴部分在阀组件位于第二状态位置时的内部剖视图;Fig. 4 is an internal cross-sectional view of the main shaft part of the compressor pump body of the present invention when the valve assembly is in the second state position;
图5是图4中的B部分的局部放大结构示意图;Fig. 5 is a partial enlarged structural schematic diagram of part B in Fig. 4;
图6a是本发明的油塞立体结构示意图;图6b是本发明的油塞主视图;图6c是图6b的竖直方向内部剖视图;图6d为油塞的俯视图;Figure 6a is a schematic diagram of the three-dimensional structure of the oil plug of the present invention; Figure 6b is a front view of the oil plug of the present invention; Figure 6c is a vertical internal sectional view of Figure 6b; Figure 6d is a top view of the oil plug;
图7a是本发明的弹簧的立体结构示意图;图7b是本发明的球阀的正面结构示意图;Fig. 7a is a three-dimensional schematic diagram of a spring of the present invention; Fig. 7b is a schematic diagram of a frontal structure of a ball valve of the present invention;
图8a是本发明的压缩机主轴的正面剖视图;图8b是本发明的压缩机主轴的立体结构示意图;图8c是图8b的D部分的放大结构示意图。Fig. 8a is a front sectional view of the compressor main shaft of the present invention; Fig. 8b is a three-dimensional structural schematic diagram of the compressor main shaft of the present invention; Fig. 8c is an enlarged structural schematic diagram of part D of Fig. 8b.
图中附图标记表示为:The reference signs in the figure represent:
1—主轴中心孔,11—主孔,12—第一阶梯孔,13—弹簧容纳孔,14—过渡孔,15—内螺纹,2—主轴径向油孔,3—油塞,31—容纳空间,32—上端部,33—溢出孔,34—外螺纹,4—阀组件,41—阀体,411—球阀,42—弹性组件,421—弹簧,5—主轴,6—上法兰,7—下法兰,8—气缸,9—滑片,10—下盖板,100—油泵,101—排气阀,102—螺钉,103—油泵连接头。1—Spindle center hole, 11—Main hole, 12—First stepped hole, 13—Spring receiving hole, 14—Transition hole, 15—Internal thread, 2—Spindle radial oil hole, 3—Oil plug, 31—Accommodating Space, 32—upper end, 33—overflow hole, 34—external thread, 4—valve assembly, 41—valve body, 411—ball valve, 42—elastic component, 421—spring, 5—main shaft, 6—upper flange, 7—lower flange, 8—cylinder, 9—slide, 10—lower cover plate, 100—oil pump, 101—exhaust valve, 102—screw, 103—oil pump connector.
具体实施方式detailed description
如图1-8c所示,本发明提供一种压缩机主轴,其包括位于其内部沿轴向方向开设的能够容许背压油流过的主轴中心孔1、以及沿径向方向与所述主轴中心孔1相连通的主轴径向油孔2,所述主轴径向油孔2用于将油输送出所述主轴5以提供需要的背压和润滑;As shown in Figure 1-8c, the present invention provides a compressor main shaft, which includes a main shaft central hole 1 that is opened in the axial direction and can allow back pressure oil to flow through, and is connected to the main shaft in the radial direction. The central hole 1 is connected with the main shaft radial oil hole 2, and the main shaft radial oil hole 2 is used to deliver oil out of the main shaft 5 to provide the required back pressure and lubrication;
在所述主轴中心孔1的上部设置有油塞3,且在所述主轴中心孔1中、位于所述油塞3与所述主轴径向油孔2之间的位置还设置有阀组件4,所述阀组件4上端与所述油塞3相连;An oil plug 3 is arranged on the upper part of the spindle center hole 1, and a valve assembly 4 is also arranged in the spindle center hole 1 between the oil plug 3 and the spindle radial oil hole 2 , the upper end of the valve assembly 4 is connected to the oil plug 3;
所述阀组件设置成为:当所述主轴中心孔中的油压大于所述阀组件所提供的背压时,所述阀组件打开、以容许油从所述主轴中心孔中流至所述油塞3;当所述主轴中心孔中的油压小于所述阀组件所提供的背压时,所述阀组件关闭、以阻止油从所述主轴中心孔中流至所述油塞3。The valve assembly is configured such that when the oil pressure in the central hole of the main shaft is greater than the back pressure provided by the valve assembly, the valve assembly opens to allow oil to flow from the central hole of the main shaft to the oil plug 3. When the oil pressure in the central hole of the main shaft is lower than the back pressure provided by the valve assembly, the valve assembly is closed to prevent oil from flowing from the central hole of the main shaft to the oil plug 3 .
通过在主轴中心孔中、油塞与主轴径向油孔之间的位置设置阀组件,使得当油压大于阀组件背压时打开阀组件以泄压,当油压小于阀组件背压时关闭阀组件停止泄压,能够使得在主轴转速不一致的情况下最终进入主轴径向油孔的背压油的背压也能达到稳定、不会产生背压波动,不会由于背压过小而供油不足,同时也不会由于背压过大而导致从油塞上端流失而使得供油不足、或背压过大而进入气缸(优选滑片头部)的压力功耗增加而导致压缩机能效降低的情况发生;在压缩机低速运行、低离心力时,也能保证充足的油量进入主轴径向油孔,保证充足的背压、提供充足的背压油。By setting the valve assembly in the center hole of the main shaft, between the oil plug and the radial oil hole of the main shaft, the valve assembly is opened to release the pressure when the oil pressure is greater than the back pressure of the valve assembly, and closed when the oil pressure is lower than the back pressure of the valve assembly The pressure relief of the valve assembly stops, so that the back pressure of the back pressure oil that finally enters the radial oil hole of the main shaft can also be stabilized under the condition that the main shaft speed is inconsistent, and there will be no back pressure fluctuations, and no supply failure due to too small back pressure. Insufficient oil, and at the same time, it will not cause insufficient oil supply due to excessive back pressure that will cause loss from the upper end of the oil plug, or excessive back pressure will increase the pressure power consumption entering the cylinder (preferably the head of the slide vane), resulting in compressor energy efficiency When the compressor is running at low speed and low centrifugal force, it can also ensure that sufficient oil enters the radial oil hole of the main shaft to ensure sufficient back pressure and provide sufficient back pressure oil.
优选地,所述阀组件4包括阀体41和弹性组件42,所述阀体41可沿主轴轴向移动以打开所述主轴中心孔1的流路和关闭该流路;所述弹性组件42的下端连接至所述阀体41上、上端连接至所述油塞3。通过将阀组件设置为包括阀体和弹性组件的结构形式,能够通过弹性组件带动阀体进行轴向移动以进而通过阀体打开或关闭主轴中心孔的流路,实现背压油稳定调控的目的和作用。Preferably, the valve assembly 4 includes a valve body 41 and an elastic assembly 42, the valve body 41 can move axially along the main shaft to open the flow path of the central hole 1 of the main shaft and close the flow path; the elastic assembly 42 The lower end is connected to the valve body 41 , and the upper end is connected to the oil plug 3 . By arranging the valve assembly in a structural form including a valve body and an elastic assembly, the elastic assembly can drive the valve body to move axially, and then open or close the flow path of the main shaft center hole through the valve body, so as to achieve the purpose of stabilizing the back pressure oil and function.
优选地,所述阀体41为球阀411。这是本发明的阀体的优选结构形式,能够起到阻挡流体经过以及打开流体流路的目的。进一步地,优选该球阀为实体钢珠。Preferably, the valve body 41 is a ball valve 411 . This is a preferred structural form of the valve body of the present invention, which can serve the purpose of blocking the passage of fluid and opening the fluid flow path. Further, preferably, the ball valve is a solid steel ball.
优选地,所述弹性组件42为弹簧421,所述弹簧的刚度系数为K,其被所述阀体41和所述油塞3相向地压缩的位移量定义为X,产生的弹簧背压力F=K*X。通过将弹性组件选择为弹簧的结构形式,是本发明的压缩机主轴的优选结构形式,能够通过弹簧的固有刚度系数K以及弹簧初始的压缩量X获得需要的弹簧背压力F,也能够根据所需的已知背压力F选择适当刚度系数K的弹簧、进而再获得相应的压缩量X,因此能够获得所需的稳定的背压压力。通过设计一定的弹簧刚度和压缩量能够控制获得所需的背压力的大小,从而有效地实现对主轴中心孔中的油进行精确压力调控的目的。Preferably, the elastic component 42 is a spring 421, the stiffness coefficient of the spring is K, the displacement of which is compressed by the valve body 41 and the oil plug 3 is defined as X, and the generated spring back pressure F =K*X. By selecting the elastic component as the structural form of the spring, it is the preferred structural form of the compressor main shaft of the present invention, and the required spring back pressure F can be obtained through the inherent stiffness coefficient K of the spring and the initial compression amount X of the spring, and can also be obtained according to the required spring. The required known back pressure F selects a spring with an appropriate stiffness coefficient K, and then obtains the corresponding compression amount X, so the required stable back pressure can be obtained. The size of the required back pressure can be controlled by designing a certain spring stiffness and compression, so as to effectively achieve the purpose of precise pressure regulation of the oil in the center hole of the main shaft.
本发明在压缩机高速运行时,油泵泵油量大大增加,此时的主轴中心孔油压会增加,当油压P1>P2时,球阀打开,高压油会从球阀处流出中心孔,使主轴中心孔内的油压降低,避免了滑片背压过大,即避免了滑片头部功耗的增加,当油压低于P时,球阀又会关闭,保证主轴中心孔内的油压始终保持在设定背压P的范围内,防止了不同转速下滑片背压的波动,提高了压缩机背压控制的可靠性;In the present invention, when the compressor runs at high speed, the pump oil volume of the oil pump increases greatly, and the oil pressure in the center hole of the main shaft will increase at this time. The oil pressure in the center hole is reduced to avoid excessive back pressure of the slide vane, that is, to avoid the increase of power consumption of the slide vane head. When the oil pressure is lower than P, the ball valve will be closed again to ensure the oil pressure in the center hole of the spindle It is always kept within the range of the set back pressure P, which prevents the fluctuation of the back pressure of the vane at different speeds and improves the reliability of the compressor back pressure control;
优选地,所述主轴中心孔1包括主孔11和与所述主孔11上端相连的两段以上不同内径的阶梯孔(主孔位于主轴中心孔的偏下的段、阶梯孔位于主轴中心孔偏上的段),且所述阀体41位于所述阶梯孔中的第一阶梯孔12的位置处,且该第一阶梯孔为上部孔径比下部的孔径大的孔,所述阀体41向下运动时能通过重力卡止于所述第一阶梯孔12的位置处。通过设置阶梯孔的结构形式,能够有效地将阀体通过重力的作用由上至下运动时被卡止于该阶梯孔位置处,起到固定阀体的作用、防止其向下滑落;由于主轴中心孔中油的流动方向是由下至上,则向上的油压若能克服弹性组件的弹性力的作用和阀体重力的作用的和(但通常阀体重力相对于油压力和弹性力而言较小、一般可以忽略不计),则能推开阀体、进而通过油塞排出进行泄压。Preferably, the main shaft center hole 1 includes a main hole 11 and more than two sections of stepped holes with different inner diameters connected to the upper end of the main hole 11 (the main hole is located in the lower section of the main shaft central hole, and the stepped hole is located in the main shaft central hole. The upper section), and the valve body 41 is located at the position of the first stepped hole 12 in the stepped hole, and the first stepped hole is a hole whose upper hole diameter is larger than the lower hole diameter, and the valve body 41 When moving downward, it can be locked at the position of the first stepped hole 12 by gravity. By setting the structural form of the stepped hole, the valve body can be effectively locked at the position of the stepped hole when it moves from top to bottom under the action of gravity, which can fix the valve body and prevent it from sliding down; The flow direction of the oil in the center hole is from bottom to top, if the upward oil pressure can overcome the sum of the elastic force of the elastic component and the force of the valve body Small, generally negligible), then the valve body can be pushed open, and then discharged through the oil plug for pressure relief.
优选地,所述第一阶梯孔12为沿轴向方向由上至下内径逐渐减小的、沿轴向截面形状成喇叭口形状的圆台孔。这是本发明的第一阶梯孔的具体且优选的结构形式,通过喇叭口形状的圆台孔结构的设置形式,能够对阀体的轴向运动起到一个导向和过渡的作用,使得阀体优选为球阀能够从边缘的位置滑落到中部、以堵住下方的来油,起到阀体应有的阻挡的作用,并且将圆台孔下端内径设置为比球阀的直径要小、可以有效地使得球阀被卡设于圆台孔的下端位置而不至于向下滑落。Preferably, the first stepped hole 12 is a frustum hole whose inner diameter gradually decreases from top to bottom along the axial direction, and whose axial cross-section is shaped like a bell mouth. This is the specific and preferred structural form of the first stepped hole of the present invention. Through the setting form of the bell-shaped conical hole structure, it can play a guiding and transitional role in the axial movement of the valve body, making the valve body preferably Because the ball valve can slide from the edge to the middle to block the oil coming from below, it plays the role of blocking that the valve body should have, and the inner diameter of the lower end of the circular table hole is set to be smaller than the diameter of the ball valve, which can effectively make the ball valve It is clamped at the lower end of the circular table hole so as not to slide down.
优选地,所述阶梯孔还包括容纳所述弹性组件42的弹簧容纳孔13,所述弹簧容纳孔13上端与所述油塞3下端相接、下端与所述第一阶梯孔12相接,且所述弹簧容纳孔13为沿轴向内径均相同的圆柱孔、其内径与所述圆台孔上端的内径相同。通过弹簧容纳孔的能够将下端与阀体(优选球阀)相连的弹性组件(优选弹簧)容纳于其中并在其中做轴向伸缩运动,由于弹簧上端抵接于油塞上不能再往上运动,为弹性部件的压缩进而产生相应的弹性力提供了条件。Preferably, the stepped hole further includes a spring accommodating hole 13 for accommodating the elastic component 42 , the upper end of the spring accommodating hole 13 connects with the lower end of the oil plug 3 , and the lower end connects with the first stepped hole 12 , And the spring receiving hole 13 is a cylindrical hole with the same inner diameter along the axial direction, and its inner diameter is the same as the inner diameter of the upper end of the frustum hole. The elastic component (preferably spring) that can connect the lower end to the valve body (preferably a ball valve) through the spring accommodation hole is accommodated in it and performs axial telescopic movement therein. Since the upper end of the spring abuts against the oil plug, it cannot move upward. Conditions are provided for the compression of the elastic component to generate corresponding elastic force.
优选地,所述阶梯孔还包括位于所述圆台孔下端且与所述圆台孔相接的圆柱形的过渡孔14,所述过渡孔14的内径与所述圆台孔下端的内径相同,且小于所述主孔11的内径。所述过渡孔起到的作用是使得从下端主孔流上的油通过过渡孔进行适应性的调节作用,使得油压油速能够达到与圆台孔下端面相同的管道截面积所产生的油压和油速,减小油由于流动截面积骤变而产生压力、能量损失的情况。Preferably, the stepped hole also includes a cylindrical transition hole 14 located at the lower end of the frustum hole and connected to the frustum hole. The inner diameter of the transition hole 14 is the same as the inner diameter of the lower end of the frustum hole and less than The inner diameter of the main hole 11. The role of the transition hole is to make the oil flowing from the main hole at the lower end pass through the transition hole for adaptive adjustment, so that the oil pressure and oil speed can reach the oil pressure generated by the pipeline cross-sectional area that is the same as the lower end surface of the circular table hole. and oil speed, reducing the pressure and energy loss of oil due to sudden changes in flow cross-sectional area.
本发明优选地通过在主轴中心孔上安装弹簧和球阀,控制主轴中心孔内的油压,能保证压缩机在不同频率下实现相同的背压,降低由于油泵泵油量改变而引起的背压波动,且通过弹簧球阀能实现在压缩机低转速时能提供足够的背压油,保证背压的可靠性。The present invention preferably installs a spring and a ball valve on the center hole of the main shaft to control the oil pressure in the center hole of the main shaft, which can ensure the same back pressure of the compressor at different frequencies and reduce the back pressure caused by the change of the oil volume of the oil pump Fluctuation, and the spring ball valve can provide sufficient back pressure oil at low speed of the compressor to ensure the reliability of the back pressure.
本发明弹簧球阀装置全部设置在主轴中心孔上,即:所述主轴的中心孔为多段不同内径的中心孔,在能实现通油的前提下又能保证主轴的强度要求,球阀设置在主轴中心孔上端的喇叭孔处,弹簧前端与球阀接触,弹簧尾端由阀油塞实现限位,阀油塞通过螺纹固定在主轴上端,球阀的开关取决于主轴中心孔的油压和弹簧的预压力的大小关系,整个装置结构简单,不会对压缩机结构造成过多的干涉,工艺上容易实现,且无复杂的控制系统;The spring ball valve device of the present invention is all arranged on the central hole of the main shaft, that is: the central hole of the main shaft is a center hole with multiple sections of different inner diameters, and the strength requirement of the main shaft can be guaranteed under the premise of realizing oil passage, and the ball valve is arranged in the center of the main shaft At the horn hole at the upper end of the hole, the front end of the spring is in contact with the ball valve, and the end of the spring is limited by the valve oil plug. The valve oil plug is fixed on the upper end of the main shaft through threads. The switch of the ball valve depends on the oil pressure in the center hole of the main shaft and the preload of the spring. The size relationship, the whole device structure is simple, will not cause too much interference to the compressor structure, easy to implement in technology, and there is no complicated control system;
本发明弹簧初始长度由所需的背压决定,当确定滑片背压力和弹簧刚度之后,通过公式:F=K·X(L:背压力,K:弹簧刚度,X:弹簧长度),可求出弹簧初始的压缩量,进而可以确定球阀与阀油塞的距离,从而通过限位保证弹簧的初始压缩量,即确定了滑片背压P2,背压P2的确定方式简单可靠;The initial length of the spring of the present invention is determined by the required back pressure. After determining the back pressure of the slide plate and the spring stiffness, by formula: F=K X (L: back pressure, K: spring stiffness, X: spring length), can Find the initial compression of the spring, and then determine the distance between the ball valve and the valve oil plug, so as to ensure the initial compression of the spring through the limit, that is, the back pressure P2 of the slide is determined, and the determination method of the back pressure P2 is simple and reliable;
本发明在压缩机低速运行时,油泵泵油量较小,此时主轴中心孔的油压P1会较低,此时P1<P2,即主轴中心孔的油压低于弹簧背压,此时球阀处于关闭状态,主轴中心孔的油会全部从径向孔进入背压槽,即保证了在压缩机低速状态时也能保证足够的油量进入背压,避免了传统方案在压缩机低速、低离心力时的背压油量不足的现象。In the present invention, when the compressor is running at a low speed, the amount of oil pumped by the oil pump is small. At this time, the oil pressure P1 in the center hole of the main shaft will be low. At this time, P1<P2, that is, the oil pressure in the center hole of the main shaft is lower than the spring back pressure. At this time When the ball valve is closed, all the oil in the center hole of the main shaft will enter the back pressure groove from the radial hole, which ensures that enough oil can enter the back pressure even when the compressor is at low speed, and avoids the traditional scheme. Insufficient back pressure oil quantity at low centrifugal force.
如图6a-图6d所示,优选地,所述油塞3为套筒式结构,包括位于其下部的能够容纳所述弹性组件42进入的容纳空间31、以及位于其上端部的用于抵靠所述弹性组件的上端部32。通过设置套筒式结构、能够有效形成容纳弹性组件进入的容纳空间31,并且通过上端部的抵靠作用,使得弹性组件能够通过上端部产生向下的压紧力,从而产生所需的弹性力,为提供稳定的背压提供了条件。As shown in Figures 6a-6d, preferably, the oil plug 3 is a sleeve-type structure, including an accommodating space 31 at its lower part capable of accommodating the elastic component 42, and an accommodating space at its upper end for resisting Lean against the upper end 32 of the elastic component. The accommodating space 31 for accommodating the elastic component can be effectively formed by setting the sleeve structure, and through the abutting effect of the upper end, the elastic component can generate a downward pressing force through the upper end, thereby generating the required elastic force , providing conditions for providing a stable back pressure.
优选地,所述油塞3的上端部设置有与所述容纳空间31相连通的能够排出油的溢出孔33,所述容纳空间31呈圆柱形状、且所述溢出孔33的孔径小于所述容纳空间31的直径。通过在油塞上端部设置与容纳空间相连通的溢出孔,能够将超出背压值的油通过油塞排出主轴外,以降低对压缩机其他部件的不利影响,并且溢出孔孔径小于容纳空间的直径是为了使得弹簧能够安全地被抵靠于上端部下方、避免从溢出孔伸出而起不到弹性力,进一步优选地,弹簧的直径大于溢出孔的直径。Preferably, the upper end of the oil plug 3 is provided with an overflow hole 33 that communicates with the accommodating space 31 and can discharge oil. The diameter of the accommodation space 31 . By setting an overflow hole connected to the accommodation space at the upper end of the oil plug, the oil exceeding the back pressure value can be discharged out of the main shaft through the oil plug to reduce adverse effects on other components of the compressor, and the overflow hole diameter is smaller than that of the accommodation space The diameter is to enable the spring to be securely abutted against the bottom of the upper end, so as not to protrude from the overflow hole and not exert elastic force. Further preferably, the diameter of the spring is larger than the diameter of the overflow hole.
优选地,套筒式的所述油塞3的周向外壁设置有外螺纹34,所述主轴中心孔1上端的内壁上设置有能与所述外螺纹相匹配作用的内螺纹15。通过油塞径向外侧(即周向外壁)设置的外螺纹与主轴中心孔内壁设置的内螺纹,能够有效地将油塞通过螺纹连接的方式固定于所述主轴的上端,为向上运动的油提供泄压阻力的同时,还保证了对对阀组件施加固定弹性力的作用,从而有效地产生稳定的背压压力的油。Preferably, the outer circumferential wall of the sleeve-type oil plug 3 is provided with an external thread 34 , and the inner wall of the upper end of the spindle central hole 1 is provided with an internal thread 15 that can match the external thread. Through the external thread provided on the radially outer side of the oil plug (that is, the circumferential outer wall) and the internal thread provided on the inner wall of the central hole of the main shaft, the oil plug can be effectively fixed on the upper end of the main shaft through threaded connection, and the upward moving oil While providing pressure relief resistance, it also ensures the effect of exerting a fixed elastic force on the valve assembly, thereby effectively generating stable back pressure oil.
优选地,还包括设置于主轴下端的能与油泵进行匹配相接的油泵连接头103。通过油泵连接头能够将主轴有效地与油泵进行连接,并且将油泵中产生的油泵送至主轴中的主轴中心孔中,从而产生相应的背压力的作用,以及起到润滑、冷却等的作用。Preferably, it also includes an oil pump connection head 103 arranged at the lower end of the main shaft and capable of mating with the oil pump. Through the oil pump connector, the main shaft can be effectively connected with the oil pump, and the oil generated in the oil pump can be pumped to the main shaft center hole in the main shaft, so as to generate corresponding back pressure, and play the role of lubrication and cooling.
本发明还提供一种压缩机,其包括前述的压缩机主轴。通过在主轴中心孔中、油塞与主轴径向油孔之间的位置设置阀组件,使得当油压大于阀组件背压时打开阀组件以泄压,当油压小于阀组件背压时关闭阀组件停止泄压,能够使得在主轴转速不一致的情况下最终进入主轴径向油孔的背压油的背压也能达到稳定、不会产生背压波动,不会由于背压过小而供油不足,同时也不会由于背压过大而导致从油塞上端流失而使得供油不足、或背压过大而进入气缸(优选滑片头部)的压力功耗增加而导致压缩机能效降低的情况发生;在压缩机低速运行、低离心力时,也能保证充足的油量进入主轴径向油孔,保证充足的背压、提供充足的背压油。The present invention also provides a compressor, which includes the aforementioned compressor main shaft. By setting the valve assembly in the center hole of the main shaft, between the oil plug and the radial oil hole of the main shaft, the valve assembly is opened to release the pressure when the oil pressure is greater than the back pressure of the valve assembly, and closed when the oil pressure is lower than the back pressure of the valve assembly The pressure relief of the valve assembly stops, so that the back pressure of the back pressure oil that finally enters the radial oil hole of the main shaft can also be stabilized under the condition that the main shaft speed is inconsistent, and there will be no back pressure fluctuations, and no supply failure due to too small back pressure. Insufficient oil, and at the same time, it will not cause insufficient oil supply due to excessive back pressure that will cause loss from the upper end of the oil plug, or excessive back pressure will increase the pressure power consumption entering the cylinder (preferably the head of the slide vane), resulting in compressor energy efficiency When the compressor is running at low speed and low centrifugal force, it can also ensure that sufficient oil enters the radial oil hole of the main shaft to ensure sufficient back pressure and provide sufficient back pressure oil.
由于采用了本发明的背压控制方式,通过控制弹簧球阀的弹簧刚度能实现得到理想的主轴中心孔内的油压,即实现背压压力值设计控制。另外,通过弹簧球阀,能保证在压缩机在各个频率段运行时滑片背压值一定,降低滑片背压波动,且在压缩机低速运行、低离心力时,保证有足够的油量进入主轴径向油孔,保证充足的背压。Due to the adoption of the back pressure control method of the present invention, the ideal oil pressure in the center hole of the main shaft can be achieved by controlling the spring stiffness of the spring ball valve, that is, the design control of the back pressure pressure value can be realized. In addition, through the spring ball valve, it can ensure that the back pressure of the sliding vane is constant when the compressor is running in each frequency range, reducing the fluctuation of the back pressure of the sliding vane, and when the compressor is running at low speed and low centrifugal force, enough oil can be guaranteed to enter the main shaft Radial oil holes ensure sufficient back pressure.
优选地,所述压缩机为滑片式压缩机。这是本发明的压缩机的优选结构形式,能够进一步优选地实现对滑片式压缩机的背压进行精确稳定的控制。Preferably, the compressor is a vane compressor. This is a preferred structural form of the compressor of the present invention, which can further preferably realize accurate and stable control of the back pressure of the vane compressor.
如图1是本发明泵体组件爆炸图,组件包括油塞3、弹簧421、球阀411、主轴5、气缸8、上法兰6、下法兰7、下盖板10、油泵100、滑片、螺钉102等零件。如图2是本发明的泵体剖视图,压缩机工作时,主轴旋转带动油泵工作泵油,油被油泵吸入并排出进入主轴中心孔,中心孔内的油受离心作用和油泵背压进入主轴径向油孔,最后经过间隙通道进入滑片背压槽,为滑片提供背压。Figure 1 is an exploded view of the pump body assembly of the present invention, the assembly includes an oil plug 3, a spring 421, a ball valve 411, a main shaft 5, a cylinder 8, an upper flange 6, a lower flange 7, a lower cover plate 10, an oil pump 100, and a slide plate , Screw 102 and other parts. Figure 2 is a cross-sectional view of the pump body of the present invention. When the compressor is working, the main shaft rotates to drive the oil pump to pump oil. The oil is sucked by the oil pump and discharged into the center hole of the main shaft. To the oil hole, and finally enter the slide back pressure groove through the clearance channel to provide back pressure for the slide.
具体的:specific:
本发明所述的阀油塞如图6a-6d,其中间是供油流通的中心孔,其中心孔有不同内径的两段,形成的台阶面用于限位弹簧尾部,阀油塞底端外侧攻有与主轴连接的螺纹,阀油塞上端是一段方形结构,是用于安装时装夹拧紧用的结构;The valve oil plug of the present invention is shown in Figures 6a-6d, in which there is a central hole for oil supply and circulation, and the central hole has two sections with different inner diameters, and the formed step surface is used for the tail of the limit spring, and the bottom end of the valve oil plug The outer side is tapped with a thread connected to the main shaft, and the upper end of the valve oil plug is a square structure, which is used for clamping and tightening during installation;
本发明所述弹簧和球阀如图7a-7b,球阀411是一个实体钢珠,弹簧是一种头部收口形式的弹簧,收口与球阀外径形成配合,能保证弹簧能顶住球阀而不发生打滑脱离,弹簧尾部是平面端,方便阀油塞贴紧配合;The spring and the ball valve of the present invention are shown in Figures 7a-7b. The ball valve 411 is a solid steel ball. The spring is a spring in the form of a head closure. The closure forms a fit with the outer diameter of the ball valve to ensure that the spring can withstand the ball valve without slipping. Disengagement, the tail of the spring is a flat end, which is convenient for the valve oil plug to fit tightly;
本发明所述主轴如图8a-8c,主轴开设有主轴中心孔,所述中心孔为多段不同内径的孔,其中最上端有供阀油塞安装的螺纹孔,螺纹孔下端有放置球阀的喇叭形孔,在压缩机工作时中心孔的底端与油泵出油孔连通,在主轴长短轴上各开设有两个径向油孔,在主轴底端有与油泵连接用的油泵连接头,如局部放大图,其D型结构方便与油泵连接;The main shaft of the present invention is shown in Figures 8a-8c. The main shaft is provided with a central hole of the main shaft. The central hole is a plurality of holes with different inner diameters. The uppermost end has a threaded hole for the valve oil plug to be installed, and the lower end of the threaded hole has a horn for placing a ball valve. When the compressor is working, the bottom of the central hole is connected with the oil outlet hole of the oil pump. There are two radial oil holes on the long and short axes of the main shaft, and there is an oil pump connector for connecting with the oil pump at the bottom of the main shaft. Partial enlarged view, its D-shaped structure is convenient to connect with the oil pump;
本发明的油泵为常见齿轮油泵,油泵通过D型孔与主轴上的油泵连接头配合,并通过主轴带动旋转泵油。The oil pump of the present invention is a common gear oil pump, and the oil pump cooperates with the oil pump connector on the main shaft through the D-shaped hole, and drives the rotation pump oil through the main shaft.
如图2泵体剖视图,压缩机运行时,电机带动主轴旋转(电机未示出),主轴通过底端的油泵连接头带动油泵旋转,油泵底端插入油池(油池未示出),油泵旋转实现泵油,油池中的油通过油泵泵油进入主轴中心孔。As shown in the sectional view of the pump body in Figure 2, when the compressor is running, the motor drives the main shaft to rotate (the motor is not shown), and the main shaft drives the oil pump to rotate through the oil pump connector at the bottom, and the bottom of the oil pump is inserted into the oil pool (the oil pool is not shown), and the oil pump rotates Oil pumping is realized, and the oil in the oil pool enters the center hole of the main shaft through the oil pump.
当主轴中心油孔的油压P1小于弹簧产生的压力P2,即设定背压时,如图3,球阀保持关闭状态,中心孔的油会全部通过主轴径向油孔进入背压油槽,不会从球阀流失,保证低转速时的供油量,且主轴中心孔的油压会在油泵的持续泵油下会慢慢增加,最终达到设定背压P2,实现对滑片背压的控制。When the oil pressure P1 of the oil hole in the center of the main shaft is lower than the pressure P2 generated by the spring, that is, when the back pressure is set, as shown in Figure 3, the ball valve remains closed, and all the oil in the center hole will enter the back pressure oil groove through the radial oil hole of the main shaft. It will be lost from the ball valve to ensure the oil supply at low speed, and the oil pressure in the center hole of the main shaft will gradually increase under the continuous pumping of the oil pump, and finally reach the set back pressure P2 to realize the control of the back pressure of the slide vane .
当压缩机运行频率较高时,油泵供油迅速,主轴中心孔的油压P1会大于P2,此时如图4-5,球阀会打开,主轴中心孔的油会从打开的球阀两侧流出中心孔,从而降低中心孔的油压,保持中心孔的油压。When the operating frequency of the compressor is high, the oil pump supplies oil quickly, and the oil pressure P1 in the center hole of the main shaft will be greater than P2. At this time, as shown in Figure 4-5, the ball valve will open, and the oil in the center hole of the main shaft will flow out from both sides of the opened ball valve. center hole, thereby reducing the oil pressure of the center hole and maintaining the oil pressure of the center hole.
本发明的特点为:The features of the present invention are:
a.本发明只需通过控制弹簧刚度和主轴喇叭口与阀油塞的距离就能设计想要得到的滑片背压,原理简单可靠;a. The present invention can design the desired sliding vane back pressure only by controlling the spring stiffness and the distance between the main shaft bell mouth and the valve oil plug, and the principle is simple and reliable;
a.本发明弹簧球阀装置全部设置在主轴中心孔上,即:所述主轴的中心孔为多段不同内径的中心孔,在能实现通油的前提下又能保证主轴的强度要求,球阀设置在主轴中心孔上端的喇叭孔处,弹簧前端与球阀接触,弹簧尾端由阀油塞实现限位,阀油塞通过螺纹固定在主轴上端,球阀的开关取决于主轴中心孔的油压和弹簧的预压力的大小关系,整个装置结构简单,不会对压缩机结构造成过多的干涉,工艺上容易实现,且无复杂的控制系统;a. The spring ball valve device of the present invention is all arranged on the central hole of the main shaft, that is: the central hole of the main shaft is a central hole with multiple sections of different inner diameters, and the strength requirement of the main shaft can be guaranteed under the premise of realizing oil passage. The ball valve is arranged on At the horn hole at the upper end of the spindle center hole, the front end of the spring is in contact with the ball valve, and the spring end is limited by the valve oil plug, which is fixed on the upper end of the spindle through threads. The switch of the ball valve depends on the oil pressure in the spindle center hole and the spring pressure. The relationship between the size of the pre-pressure, the structure of the whole device is simple, it will not cause too much interference to the structure of the compressor, the process is easy to realize, and there is no complicated control system;
b.本发明弹簧初始长度由所需的背压决定,当确定滑片背压力和弹簧刚度之后,通过公式:F=K·X(L:背压力,K:弹簧刚度,X:弹簧长度),可求出弹簧初始的压缩量,进而可以确定球阀与阀油塞的距离,从而通过限位保证弹簧的初始压缩量,即确定了滑片背压P2,背压P2的确定方式简单可靠;b. The initial length of the spring of the present invention is determined by the required back pressure. After determining the back pressure and spring stiffness of the slide plate, the formula is: F=K X (L: back pressure, K: spring stiffness, X: spring length) , the initial compression of the spring can be obtained, and then the distance between the ball valve and the valve oil plug can be determined, so as to ensure the initial compression of the spring through the limit position, that is, the back pressure P2 of the slide is determined, and the determination method of the back pressure P2 is simple and reliable;
c.本发明在压缩机低速运行时,油泵泵油量较小,此时主轴中心孔的油压P1会较低,此时P1>P2,即主轴中心孔的油压低于弹簧背压,此时球阀处于关闭状态,主轴中心孔的油会全部从径向孔进入背压槽,即保证了在压缩机低速状态时也能保证足够的油量进入背压,避免了传统方案在压缩机低速、低离心力时的背压油量不足的现象;c. In the present invention, when the compressor is running at a low speed, the amount of oil pumped by the oil pump is small. At this time, the oil pressure P1 in the center hole of the main shaft will be low. At this time, P1>P2, that is, the oil pressure in the center hole of the main shaft is lower than the spring back pressure. At this time, the ball valve is in the closed state, and all the oil in the center hole of the main shaft will enter the back pressure groove from the radial hole, which ensures that enough oil can enter the back pressure even when the compressor is in a low speed state, avoiding the traditional solution in the compressor. Insufficient back pressure oil volume at low speed and low centrifugal force;
d.本发明在压缩机高速运行时,油泵泵油量大大增加,此时的主轴中心孔油压会增加,当油压P1>P2时,球阀打开,高压油会从球阀处流出中心孔,使主轴中心孔内的油压降低,避免了滑片背压过大,即避免了滑片头部功耗的增加,当油压低于P时,球阀又会关闭,保证主轴中心孔内的油压始终保持在设定背压P的范围内,防止了不同转速下滑片背压的波动,提高了压缩机背压控制的可靠性。d. In the present invention, when the compressor is running at high speed, the pump oil volume of the oil pump is greatly increased, and the oil pressure in the center hole of the main shaft will increase at this time. When the oil pressure P1>P2, the ball valve is opened, and the high-pressure oil will flow out of the center hole from the ball valve. The oil pressure in the center hole of the main shaft is reduced, which avoids excessive back pressure of the slide vane, that is, avoids the increase of power consumption of the head of the slide vane. When the oil pressure is lower than P, the ball valve will be closed again to ensure the The oil pressure is always kept within the range of the set back pressure P, which prevents the fluctuation of the back pressure of the vane at different speeds and improves the reliability of the compressor back pressure control.
本发明油泵类型和泵油方式不限定,可以采用其他类型油泵,亦可以采用其他方式泵油;本发明油塞形式及与主轴的连接方式不限定,只要能实现对弹簧的限位即可。The type of the oil pump and the oil pumping method of the present invention are not limited, and other types of oil pumps can be used, and other methods of oil pumping can also be used; the form of the oil plug of the present invention and the connection method with the main shaft are not limited, as long as the spring can be limited.
本领域的技术人员容易理解的是,在不冲突的前提下,上述各有利方式可以自由地组合、叠加。Those skilled in the art can easily understand that, on the premise of no conflict, the above-mentioned advantageous modes can be freely combined and superimposed.
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和变型,这些改进和变型也应视为本发明的保护范围。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range. The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made, these improvements and modifications It should also be regarded as the protection scope of the present invention.
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710107704.2A CN106762660B (en) | 2017-02-27 | 2017-02-27 | A kind of compressor main shaft and the compressor with it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710107704.2A CN106762660B (en) | 2017-02-27 | 2017-02-27 | A kind of compressor main shaft and the compressor with it |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106762660A true CN106762660A (en) | 2017-05-31 |
CN106762660B CN106762660B (en) | 2019-03-15 |
Family
ID=58960748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710107704.2A Active CN106762660B (en) | 2017-02-27 | 2017-02-27 | A kind of compressor main shaft and the compressor with it |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106762660B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110966194A (en) * | 2019-10-16 | 2020-04-07 | 珠海格力电器股份有限公司 | Compressor and sliding vane compressor backpressure control structure |
CN111963435A (en) * | 2020-07-24 | 2020-11-20 | 珠海格力电器股份有限公司 | Compressor and air conditioner |
CN111963433A (en) * | 2020-07-24 | 2020-11-20 | 珠海格力电器股份有限公司 | Compressor and air conditioner |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001003866A (en) * | 1999-06-18 | 2001-01-09 | Fujitsu General Ltd | Hermetic compressor |
CN1467377A (en) * | 2002-06-05 | 2004-01-14 | ������������ʽ���� | Rotary compressor and method for manufacturing same and removal volumetric proportions setting method |
CN202250875U (en) * | 2011-10-25 | 2012-05-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Rolling rotor type compressor |
CN103967796A (en) * | 2014-05-06 | 2014-08-06 | 广东美芝制冷设备有限公司 | Crankshaft for rotary compressor, manufacturing method of crankshaft and rotary compressor |
CN106286306A (en) * | 2015-05-27 | 2017-01-04 | 珠海格力电器股份有限公司 | Horizontal sliding vane compressor and air conditioner |
CN206503719U (en) * | 2017-02-27 | 2017-09-19 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of compressor main shaft and the compressor with it |
-
2017
- 2017-02-27 CN CN201710107704.2A patent/CN106762660B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001003866A (en) * | 1999-06-18 | 2001-01-09 | Fujitsu General Ltd | Hermetic compressor |
CN1467377A (en) * | 2002-06-05 | 2004-01-14 | ������������ʽ���� | Rotary compressor and method for manufacturing same and removal volumetric proportions setting method |
CN202250875U (en) * | 2011-10-25 | 2012-05-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Rolling rotor type compressor |
CN103967796A (en) * | 2014-05-06 | 2014-08-06 | 广东美芝制冷设备有限公司 | Crankshaft for rotary compressor, manufacturing method of crankshaft and rotary compressor |
CN106286306A (en) * | 2015-05-27 | 2017-01-04 | 珠海格力电器股份有限公司 | Horizontal sliding vane compressor and air conditioner |
CN206503719U (en) * | 2017-02-27 | 2017-09-19 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of compressor main shaft and the compressor with it |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110966194A (en) * | 2019-10-16 | 2020-04-07 | 珠海格力电器股份有限公司 | Compressor and sliding vane compressor backpressure control structure |
CN111963435A (en) * | 2020-07-24 | 2020-11-20 | 珠海格力电器股份有限公司 | Compressor and air conditioner |
CN111963433A (en) * | 2020-07-24 | 2020-11-20 | 珠海格力电器股份有限公司 | Compressor and air conditioner |
CN111963435B (en) * | 2020-07-24 | 2022-08-05 | 珠海格力电器股份有限公司 | Compressor and air conditioner |
Also Published As
Publication number | Publication date |
---|---|
CN106762660B (en) | 2019-03-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102678994B (en) | Automatic decompression voltage and current stabilizer | |
CN103133701B (en) | A kind of electrodynamic valve | |
CN106762660A (en) | A kind of compressor main shaft and the compressor with it | |
CN109323006A (en) | Electric expansion valve | |
CN104454518B (en) | Variable displacement vane pump | |
WO2020042432A1 (en) | Pump assembly and compressor | |
JP2009264530A (en) | Motor operated valve | |
EP3163167B1 (en) | Plug member of gas valve | |
CN108278393B (en) | A kind of slide valve type guide one-way overflow valve | |
CN103206383A (en) | Vapor-core pump with impeller central pressure supplement regulator | |
CN106104000B (en) | Vacuum pump, and system of vacuum pump and engine | |
CN106969173A (en) | A kind of through type damping check valve component | |
CN203784314U (en) | Throttle valve | |
WO2007122463A2 (en) | A pressure dissipater device for a hydraulic circuit | |
CN206503719U (en) | A kind of compressor main shaft and the compressor with it | |
CN110486512B (en) | Safety valve | |
CN202597827U (en) | Novel automatic pressure reducing and stabilizing and current stabilizing device | |
CN211039012U (en) | Pump head with pressure reduction protection | |
CN108980428A (en) | Air compressor machine in-line relief valve | |
CN211370716U (en) | Fuel pump | |
CN209229328U (en) | A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve | |
CN106015601B (en) | A kind of rotary return valve | |
CN212273163U (en) | Quick response prefill valve | |
KR101573225B1 (en) | Variable displacement oil pump for vehicle | |
ITPD20120344A1 (en) | PLUG TO COOPERATE WITH A VALVE SHUTTER FOR SELF-PRIMING PUMP |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20241230 Address after: Office 608, No. 108, Huitong Third Road, Hengqin New District, Zhuhai City, Guangdong Province, 519000 Patentee after: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Country or region after: China Address before: 519000 science and technology building, 789 Jinji Road, Qianshan, Zhuhai, Guangdong Patentee before: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI Country or region before: China |
|
TR01 | Transfer of patent right |