CN103939338A - Scroll compressor having a plurality of scroll members - Google Patents
Scroll compressor having a plurality of scroll members Download PDFInfo
- Publication number
- CN103939338A CN103939338A CN201310020858.XA CN201310020858A CN103939338A CN 103939338 A CN103939338 A CN 103939338A CN 201310020858 A CN201310020858 A CN 201310020858A CN 103939338 A CN103939338 A CN 103939338A
- Authority
- CN
- China
- Prior art keywords
- sealing
- back pressure
- fluid
- black box
- pressure cavity
- 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
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The present invention relates to a scroll compressor (100) comprising: an orbiting scroll member (160), a non-orbiting scroll member (150); a seal assembly (PS 1, PS2, PS3, PS4, PS5, PS 6) cooperating with a recess (158) on the orbiting scroll member (50) to collectively form a back pressure chamber (BC), and configured to separate the back pressure chamber from the high and low pressure sides in the scroll compressor (100); and a leakage passage (L) configured to allow the fluid in the back pressure chamber (BC) to leak. By adopting the invention, the compressor can stably and reliably operate under various working conditions.
Description
Technical field
The present invention relates to a kind of scroll compressor.
Background technique
The content of this part only provides the background information relevant to the disclosure, and it may not form prior art.
Scroll compressor generally includes the compressing mechanism forming by determining scroll element and moving scroll element.Conventionally, on the end plate of scroll element, be formed with recess and in recess, be provided with black box determining.Recess is communicated with a fluid in a series of compression chambers of determining to form between scroll element and moving scroll element.Recess coordinates with black box to form determines the back pressure cavity that scroll element provides back pressure.When scroll compressor is worked under different operating modes, also different to the seal request of black box.Therefore, exist the further improved space of black box.
Summary of the invention
According to embodiment of the present invention aspect, a kind of scroll compressor is provided, comprising: moving scroll element, described moving scroll element comprises moving vortex end plate and is formed on the spiral helicine moving volution blade of described moving vortex end plate one side; Determine scroll element, describedly determine scroll element and comprise and determine vortex end plate, be formed on and describedly determine the spiral helicine of vortex end plate one side and determine volution blade and be formed on the described recess of determining vortex end plate opposite side, described recess is communicated with a fluid in described moving volution blade and described a series of compression chambers of determining to form between volution blade via middle pressure passageway; Black box, described black box coordinates jointly to form back pressure cavity with described recess, and described black box is configured to high pressure side and low voltage side in described back pressure cavity and described scroll compressor to separate; And leakage way, described leakage way is configured to allow the fluid leakage in described back pressure cavity.
Accompanying drawing explanation
By the description referring to accompanying drawing, it is easier to understand that the feature and advantage of one or several mode of execution of the present invention will become, wherein:
Figure 1A is the longitudinal section of conventional scroll compressor;
Figure 1B is the exploded view of the individual layer black box shown in Figure 1A;
Fig. 2 A is a kind of sectional view of double-layer seal assembly;
Fig. 2 B is the exploded view of the double-layer seal assembly shown in Fig. 2 A;
Fig. 3 A is according to the sectional view of the black box of first embodiment of the invention;
Fig. 3 B is the exploded view of the black box shown in Fig. 3 A;
Fig. 4 A is according to the sectional view of the black box of second embodiment of the invention;
Fig. 4 B is the exploded view of the black box shown in Fig. 4 A;
Fig. 5 A is according to the sectional view of the black box of third embodiment of the invention;
Fig. 5 B is the exploded view of the black box shown in Fig. 5 A;
Fig. 6 A is according to the sectional view of the black box of four embodiment of the invention;
Fig. 6 B is the exploded view of the black box shown in Fig. 6 A;
Fig. 7 A is the sectional view according to fifth embodiment of the invention;
Fig. 7 B is the exploded view of the assembly shown in Fig. 7 A;
Fig. 8 A is according to the sectional view of the black box of sixth embodiment of the invention; And
Fig. 8 B is the partial enlarged drawing of B part in Fig. 8 A.
Embodiment
To the description of the various mode of executions of the present invention, be only exemplary below, and be never the restriction to the present invention and application or usage.In each accompanying drawing, adopt identical reference character to represent identical parts, so the structure of same parts will no longer be repeated in this description.
First total structure and the running principle of scroll compressor are described with reference to Figure 1A.As shown in Figure 1A, scroll compressor 100(hereinafter also can be called compressor sometimes) generally comprise housing 110.Housing 110 can comprise general cylindrical shape body 111, be arranged on body 111 one end top cover 112, be arranged on the bottom 114 of body 111 the other ends and be arranged on top cover 112 and body 111 between the inner space of compressor is separated into the dividing plate 116 of high pressure side and low voltage side.Formation high pressure side, space between dividing plate 116 and top cover 112, and space between dividing plate 116, body 111 and bottom 114 forms low voltage side.In low voltage side, be provided with for sucking the air input joint 118 of fluid, in high pressure side, be provided with for discharging the exhaust joint 119 of the fluid after compression.In housing 110, be provided with the motor 120 being formed by stator 122 and rotor 124.In rotor 124, be provided with live axle 130 to drive the compressing mechanism forming by determining scroll element 150 and moving scroll element 160.Moving scroll element 160 comprises end plate 164, be formed on the hub portion 162 of end plate one side and be formed on the spiral helicine blade 166 of end plate opposite side.Determining scroll element 150 comprises end plate 154, is formed on the spiral helicine blade 156 of end plate one side and is formed on the recess 158 of end plate opposite side.Substantial middle position at end plate is formed with relief opening 152.Relief opening 152 space around also forms high pressure side.Determining to form compression chamber C1, C2 and the C3 that a series of volumes are reducing to radially inner side gradually from radial outside between the helical blade 156 of vortex 150 and the helical blade 166 of moving vortex 160.Wherein, the compression chamber C1 of outermost radial outside is in pressure of inspiration(Pi), radially the compression chamber C3 of inner side in exhaust pressure.Middle compression chamber C2 between pressure of inspiration(Pi) and exhaust pressure, thereby be also referred to as middle pressure chamber.
One side of moving scroll element 160 is supported by the top (being supporting portion) of main bearing seat 140, and one end of live axle 130 is supported by the main bearing 144 being arranged in main bearing seat 140.One end of live axle 130 is provided with eccentric crank pin 132, is provided with unloading lining 142 between eccentric crank pin 132 and the hub portion 162 of moving scroll element 160.By the driving of motor 120, moving scroll element 160 will be with respect to determining scroll element 150 translation rotations (, the central axis of moving scroll element 160 is around the central axis rotation of determining scroll element 150, but moving scroll element 160 itself can not rotate around the central axis of self) to realize the compression of fluid.Above-mentioned translation rotation realizes by the cross slip-ring 190 of determining to arrange between scroll element 150 and moving scroll element 160.Through the fluid of determining after scroll element 150 and 160 compressions of moving scroll element, by relief opening 152, be discharged to high pressure side.In order to prevent that on high-tension side fluid is back to low voltage side via relief opening 152 under specific circumstances, one-way valve or outlet valve 170 can be set at relief opening 152 places.
In order to realize the compression of fluid, determining needs effective sealing between scroll element 150 and moving scroll element 160.
On the one hand, determine between the top of helical blade 156 of scroll element 150 and the end plate 164 of moving scroll element 160 and the top of the helical blade 166 of moving scroll element 160 and determine to need axial seal between the end plate 154 of scroll element 150.Conventionally, in determining the recess 158 of scroll element 150, be provided with black box S.That is, black box S is arranged on dividing plate 116 and determines between scroll element 150.Recess 158 is formed on via one the through hole 155(determining in vortex end plate 154 and is also referred to as middle pressure passageway) be communicated with a fluid in a series of compression chamber C1, C2, C3.Preferably, recess 158 is communicated with middle compression chamber C2 fluid via through hole 155.Thereby black box S coordinates and forms the back pressure cavity BC that moving scroll element 150 provides back pressure together with recess 158.The axial displacement of black box S is subject to the restriction of dividing plate 116.Because a side of moving scroll element 160 is supported by the supporting portion of main bearing seat 140, so utilize pressure in back pressure cavity BC can be effectively will to determine scroll element 150 and moving scroll element 160 forces together.When the pressure in each compression chamber surpasses setting value, thereby the pressure in these compression chambers making a concerted effort of producing make to determine scroll element 150 and move upward the downforce providing in back pressure cavity BC is provided.Now, fluid in compression chamber will unload with realization to low voltage side by the clearance leakage of determine top of the top of helical blade 156 of scroll element 150 and the helical blade 166 of the gap between the end plate 164 of moving scroll element 160 and moving scroll element 160 and determine between the end plate 154 of scroll element 150, thereby provides axial elasticity for scroll compressor.
On the other hand, determine also to need radial seal between the side surface of helical blade 156 of scroll element 150 and the side surface of the helical blade 166 of moving scroll element 160.This radial seal between the two driving force that the centrifugal force in operation process and live axle 130 provide by means of moving scroll element 160 conventionally realizes.Particularly, in operation process, by the driving of motor 120, moving scroll element 160 will, with respect to determining scroll element 150 translation rotations, will produce centrifugal force thereby move scroll element 160.On the other hand, the eccentric crank pin 132 of live axle 130 also can produce and contribute to realize the driving force component of determining scroll element and moving scroll element radial seal in rotary course.The helical blade 166 of moving scroll element 160 will abut on the helical blade 156 of determining scroll element 150 by means of above-mentioned centrifugal force and driving force component, thereby realizes the radial seal between the two.When incompressible material (such as solid impurity, lubricant oil and liquid refrigerant) enters in compression chamber and is stuck between helical blade 156 and helical blade 166, helical blade 156 and helical blade 166 can temporarily radially be separated from each other to allow foreign matter to pass through, and have therefore prevented that helical blade 156 or 166 from damaging.This ability that can radially separate, for scroll compressor provides radial compliance, has improved the reliability of compressor.
To the greasing of each parts in compressor be described below.In the example of the vertical vortex shown in Fig. 1, in the bottom of compressor housing, store oiling agent.Correspondingly, in live axle 130, be formed with roughly along its axially extended passage, be formed on the center hole 136 of live axle 130 lower ends and from center hole 136, extend up to the eccentric opening 134 of eccentric crank pin 132 end faces.The end of center hole 136 is immersed in the oiling agent bottom compressor housing or has otherwise been supplied to oiling agent.In a kind of example, feeding lubricating device can or be set, such as oil pump as shown in Figure 1 or oil fork 138 etc. in this center hole 136 near it.In the operation process of compressor, the lubricated agent feeding device in one end of center hole 136 is supplied with oiling agent, and the oiling agent that enters center hole 136 is subject to the effect of centrifugal force and upwards flows and arrive the end face of eccentric crank pin 132 always in being pumped or being thrown to eccentric opening 134 and along eccentric opening 134 in live axle 130 rotary courses.The oiling agent of discharging from the end face of eccentric crank pin 132 flows downward the recess 146 of arrival main bearing seat 140 along the gap between unloading lining 142 and eccentric crank pin 132 and the gap between unloading lining 142 and hub portion 162.Be gathered in a part of oiling agent in recess 146 and flow and flow downward through main bearing 144, a part of oiling agent is stirred by hub portion 162 and the downside of the end plate 164 that arrives moving scroll element 160 of moving upward spread all over the thrust surfaces between moving scroll element 160 and main bearing seat 140 along with the translation rotation of moving scroll element 160.In order to improve the lubrication and cooling effect of the rotor 124 of motor, can in live axle 130, arrange radial hole 139 with from eccentric opening 134 directly to rotor 124 supply of lubricant.In addition, radial hole 137 can also be set in live axle 130 with the direct direct supply of lubricant of lower bearing to supporting driving shaft 130 lower ends.In the operation process of compressor, be supplied to oiling agent on the comings and goings parts in compressor and be thrown out of and splash to form drop or mist.These lubricant droplet or mist will be blended in the working fluid (or refrigeration agent) sucking from air input joint 118.These working fluids that are mixed with lubricant droplet are inhaled in the compression chamber of determining between scroll element 150 and moving scroll element 160 to realize lubricated, the sealing and cooling of these scroll element inside subsequently.Moving scroll element and this lubricating of determining between scroll element are referred to as oil mist lubrication conventionally.
To structure and the function of black box S be described in more detail below.As shown in Figure 1B, black box S can comprise upper plate S1, lower plate S2 and be arranged on upper plate S1 and lower plate S2 between the first Sealing S3 and the 3rd Sealing S5.The shape of black box S is substantially corresponding with the shape of recess BC, thereby the first Sealing S3 can realize sealing against the radially inner side wall of recess 158, and the 3rd Sealing S5 can realize sealing against the radial outside wall of recess 158.In addition, the upper end S11 of upper plate S1 can realize sealing against dividing plate 116 or the collar 117 being arranged on dividing plate 116.More specifically, the first Sealing S3 is configured to prevent that fluid from flowing to back pressure cavity BC and still allowing fluid to flow to high pressure side from back pressure cavity BC from high pressure side.For example, the first Sealing S3 can comprise the body S32 of ring-type roughly and determine dorsad that vortex end plate extends and against the sealing lip S34 of the radially inner side wall of recess 158 from body S32.Body S32 is interposed between upper plate S1 and lower plate S2.Similarly, the 3rd Sealing S5 is configured to prevent that fluid from flowing to low voltage side from back pressure cavity BC.For example, the 3rd Sealing S5 can comprise the body S52 of ring-type roughly and from body S52 towards determining that vortex end plate extends and against the sealing lip S54 of the radial outside wall of recess 158.Body S52 is interposed between upper plate S1 and lower plate S2.
Black box S has realized the sealing of following mode in compressor: 1) the upper end S11 of upper plate S1 against the collar 117 on dividing plate 116 to realize separating of high pressure side and low voltage side; 2) the first Sealing S3 against the radially inner side wall of recess 158 to realize separating of high pressure side and back pressure cavity BC; 3) the 3rd Sealing S5 against the radial outside wall of recess 158 to realize separating of back pressure cavity BC and low voltage side.
Adopt above-mentioned black box S(to be also referred to as individual layer black box), at compressor under flooded starts operating mode, scroll element compressed liquid, pressure in back pressure cavity BC is far above exhaust pressure (high side pressure), the first Sealing S3 allows the fluid leakage in back pressure cavity to arrive high pressure side, thereby just can uninstall the pressure that this part is leapt high, this has improved the reliability of compressor.But, at compressor, under low-pressure ratio operating mode, the pressure in back pressure cavity BC is during higher than high pressure side, and the first Sealing S3 allows the pressure in back pressure cavity to leak to high pressure side, can cause moving scroll element and determine scroll element and can not finely mesh, then producing the problems such as noise, cold reduction.
Fig. 2 A and 2B show a kind of double-layer seal assembly.More specifically, except the member shown in Figure 1B, the black box S shown in Fig. 2 A and 2B further comprise the second Sealing S4 and be arranged on the first Sealing S3 and the second Sealing S4 between intermediate plate S6.The second Sealing S4 is configured to prevent that fluid from flowing to high pressure side from back pressure cavity BC and still allowing fluid from high pressure side, to flow to back pressure cavity BC.For example, the second Sealing S4 can comprise the body S34 of ring-type roughly and from body S42 towards determining that vortex end plate extends and against the sealing lip S44 of the radially inner side wall of recess 158.Body S42 is interposed between intermediate plate S6 and lower plate S2.The 26S Proteasome Structure and Function of other members of this double-layer seal assembly and the individual layer black box shown in Figure 1B are similar.
Adopt the double-layer seal assembly S shown in Fig. 2 A and 2B, at compressor under low-pressure ratio operating mode, even if the pressure in back pressure cavity BC is higher than high pressure side, the second Sealing S4 does not allow the pressure in back pressure cavity to leak to high pressure side yet, thereby moves scroll element and determine scroll element and can finely mesh.But, at compressor under flooded starts operating mode, because not allowing the pressure in back pressure cavity, the second Sealing S4 do not leak to high pressure side, so the pressure in back pressure cavity BC is far above required pressure, the axial force that causes moving scroll element and determine between scroll element increases, and affects reliability and the life-span of compressor.It is pointed out that being configured in of above-mentioned individual layer black box and double-layer seal assembly carried out more detailed description in Chinese invention patent CN1028379C, the mode in all the elements of this document by reference is incorporated to herein.
Therefore, above-mentioned seal construction still exists improved space to realize the stable and reliably running of compressor under various operating conditionss.
Inventor proposes to arrange in compressor the fluid that allows in back pressure cavity and solves the problems referred to above to the leakage way of external leakage.In theory, this leakage way can be configured to the fluid leakage in back pressure cavity to high pressure side or low voltage side.But, consider the whole work efficiency of compressor, preferably, described leakage way is configured to allow the fluid in back pressure cavity to leak to high pressure side.The various mode of executions of the structure of this leakage way are described below with reference to Fig. 3 A to Fig. 8.
Below with reference to Fig. 3 A and 3B, describe in detail according to the black box PS1 of first embodiment of the invention.Essential structure and the structure shown in Fig. 2 A and 2B of black box PS1 shown in Fig. 3 A and 3B are roughly the same.Particularly, according to the black box PS1 of first embodiment of the invention, can comprise upper plate S1, lower plate S2 and intermediate plate S6.Between upper plate S1 and intermediate plate S6, be provided with the first Sealing S3 and the 3rd Sealing S5.Between intermediate plate S6 and lower plate S2, be provided with the second Sealing S4.The first Sealing S3 and the second Sealing S4 can realize sealing against the radially inner side wall of recess 158, and the 3rd Sealing S5 can realize sealing against the radial outside wall of recess 158.The upper end S11 of upper plate S1 can realize sealing against dividing plate 116 or the collar 117 being arranged on dividing plate 116.More specifically, the first Sealing S3 can be configured to prevent that fluid from flowing to back pressure cavity BC and still allowing fluid to flow to high pressure side from back pressure cavity BC from high pressure side.For example, the first Sealing S3 can comprise the body S32 of ring-type roughly and determine dorsad that vortex end plate extends and against the sealing lip S34 of the radially inner side wall of recess 158 from body S32.The second Sealing S4 can be configured to prevent that fluid from flowing to high pressure side from back pressure cavity BC and still allowing fluid from high pressure side, to flow to back pressure cavity BC.For example, the second Sealing S4 can comprise the body S34 of ring-type roughly and from body S42 towards determining that vortex end plate extends and against the sealing lip S44 of the radially inner side wall of recess 158.The 3rd Sealing S5 can be configured to prevent that fluid from flowing to low voltage side from back pressure cavity BC.For example, the 3rd Sealing S5 can comprise the body S52 of ring-type roughly and from body S52 towards determining that vortex end plate extends and against the sealing lip S54 of the radial outside wall of recess 158.
Similarly, black box PS1 has realized the sealing of following mode in compressor: 1) the upper end S11 of upper plate S1 against the collar 117 on dividing plate 116 to realize separating of high pressure side and low voltage side; 2) the first Sealing S3 and the second Sealing S4 against the radially inner side wall of recess 158 to realize separating of high pressure side and back pressure cavity BC; 3) the 3rd Sealing S5 against the radial outside wall of recess 158 to realize separating of back pressure cavity BC and low voltage side.
In the first mode of execution of the present invention, in black box PS1, be formed with leakage way L.More specifically, the L shaped one-tenth of leakage way, in the second Sealing S4, is particularly formed on the sealing lip S44 of the second Sealing S4.For example, leakage way L can be for being formed on the through hole S46 in the sealing lip S44 of the second Sealing S4.
The smallest cross-section area of leakage way L can be set to 1/2 times to 3 times of smallest cross-section area (the in this case sectional area of through hole S46) of middle pressure passageway 155.Preferably, the smallest cross-section area of leakage way L can be arranged to be less than the smallest cross-section area of middle pressure passageway 155.Particularly, the smallest cross-section area of leakage way L can be arranged to 0.8 times to 1.2 times of smallest cross-section area of middle pressure passageway 155.It should be noted that present embodiment and below other mode of executions in, when leakage way L not has constant cross section, the smallest cross-section area of leakage way L will be controlled a parameter of the fluid leakage amount of leakage way L.In like manner, the smallest cross-section area of middle pressure passageway 155 is parameters for the fluid delivery volume of pressure passageway 155 in controlling.
Adopt the black box PS1 of first embodiment of the invention, at compressor under flooded starts operating mode, because allowing the pressure in back pressure cavity, the leakage way L in the second Sealing S4 leaks to high pressure side, thereby just can uninstall the pressure that this part is leapt high, therefore improve the reliability of compressor.Simultaneously, at compressor under low-pressure ratio operating mode, although the leakage way L in the second Sealing S4 can cause the pressure leakage in back pressure cavity BC, but because the leakage rate of leakage way L is less than the delivery volume of middle pressure passageway 155, so the second Sealing S4 and the first Sealing S3 coordinate, still can in back pressure cavity, maintain enough back pressures, thereby thereby move scroll element and determine scroll element and can fine engagement reduce the noise that engagement causes.Under other operating modes, black box PS1 can be similar to the individual layer black box shown in Figure 1A and 1B and work like that.In other words, adopt the present invention, compressor all can stably and reliably turn round under various operating modes.
Adopt, first embodiment of the invention only need to be bored an aperture on the sealing lip S44 of the second Sealing S4 of existing double-layer seal assembly.Therefore,, without the structure of other parts of compressor is changed or revised, this has saved the whole manufacture cost of compressor greatly.
Below with reference to Fig. 4 A and 4B, describe in detail according to the black box PS2 of second embodiment of the invention.The difference of the black box PS2 of the second mode of execution and the black box PS1 of the first mode of execution is, leakage way L is the otch S47 at edge that is formed on the sealing lip S44 of the second Sealing S4.The black box of the second mode of execution can be realized and the similar effect of the first mode of execution.
Below with reference to Fig. 5 A and 5B, describe in detail according to the black box PS3 of third embodiment of the invention.The difference of the black box PS3 of the 3rd mode of execution and the black box PS1 of the first mode of execution is, through hole S46 can be formed in the body S42 of the second Sealing S4 or in sealing lip S44, and is formed with otch S62 in the position corresponding with this through hole S46 of intermediate plate S6.The black box of the 3rd mode of execution can be realized and the similar effect of the first mode of execution.In addition, the processing that the 3rd mode of execution can further convenient through hole S46.
Below with reference to Fig. 6 A and 6B, describe in detail according to the black box PS4 of four embodiment of the invention.The difference of the black box PS4 of the 4th mode of execution and the black box PS1 of the first mode of execution is, the second Sealing S4 is configured to prevent that fluid from flowing to high pressure side and preventing that fluid from flowing to back pressure cavity BC from high pressure side from back pressure cavity BC, for example, the second Sealing S4 can be for arranging or be supported on O shape circle in lower plate S2; And in lower plate S2, be formed with the passage S22 that the fluid allowing in back pressure cavity enters the space between the first Sealing S3 and the second Sealing S4.For example, passage S22 can be an end opening at the bottom surface of lower plate S2 the other end opening the L shaped hole in the side of lower plate S2.The black box of the 4th mode of execution can be realized and the similar effect of the first mode of execution.
Below with reference to Fig. 7 A and 7B, describe in detail according to the black box PS5 of fifth embodiment of the invention.The black box PS5 of the 5th mode of execution can adopt the double-layer seal assembly shown in Fig. 2 A and 2B.Yet in the 5th mode of execution, the L shaped one-tenth of leakage way is in the radially inner side wall 1581 of recess 158.More specifically, leakage way L can be configured to be formed on the groove 1582 on the radially inner side wall 1581 of recess 158 in the position corresponding with the second Sealing S4.Preferably, groove 1582 does not extend to the position of the first Sealing S3.The 5th mode of execution can be realized and the similar effect of the first mode of execution.In addition, in the 5th mode of execution, without black box is processed, only need moving scroll element 150 to process on a small quantity the overall manufacture cost that therefore also can save compressor.
Below with reference to Fig. 8 A and 8B, describe in detail according to the black box PS6 of sixth embodiment of the invention.According to the black box PS6 of the 6th mode of execution can comprise be arranged on determine scroll element 150 relief opening 152 around to prevent that but fluid from flowing to back pressure cavity BC allow fluid to flow on high-tension side the first Sealing S3 and be arranged on recess 158 to prevent that but fluid from flowing to high pressure side from back pressure cavity BC allow fluid to flow to the second Sealing S4 of back pressure cavity BC from high pressure side from back pressure cavity BC from high pressure side.Black box PS6 can also comprise and being arranged in recess 158 to prevent that fluid from flowing to the 3rd Sealing S5 of low voltage side from back pressure cavity BC.More specifically, it is roughly circular and have roughly L shaped cross section that these Sealings S3, S4 and S5 can be, and two arms of L shaped cross section are realized sealing against wall and the dividing plate 116 of determining scroll element 150 respectively.The first Sealing S3 can support by being arranged on relief opening 152 spring S11 around.The second Sealing S4 and the 3rd Sealing S5 can be supported by the spring S12 being arranged in recess 158.It is pointed out that being configured in of the black box shown in the 6th mode of execution carried out more detailed description in Chinese invention patent CN202228358, the mode in all the elements of this document by reference is incorporated to herein.
In the 6th mode of execution, leakage way L is configured to define through hole or the slit S46 in the second Sealing S4.The 6th mode of execution can be realized and the similar effect of the first mode of execution.
Specifically described various mode of execution of the present invention and modification above, but it should be appreciated by those skilled in the art that the present invention is not limited to above-mentioned concrete mode of execution and modification but can comprises other various possible combinations and combinations.
For example, according to an aspect of the present invention, provide a kind of scroll compressor, having comprised: moving scroll element, described moving scroll element comprises moving vortex end plate and is formed on the spiral helicine moving volution blade of described moving vortex end plate one side; Determine scroll element, describedly determine scroll element and comprise and determine vortex end plate, be formed on and describedly determine the spiral helicine of vortex end plate one side and determine volution blade and be formed on the described recess of determining vortex end plate opposite side, described recess is communicated with a fluid in described moving volution blade and described a series of compression chambers of determining to form between volution blade via middle pressure passageway; Black box, described black box coordinates jointly to form back pressure cavity with described recess, and described black box is configured to high pressure side and low voltage side in described back pressure cavity and described scroll compressor to separate; And leakage way, described leakage way is configured to allow the fluid leakage in described back pressure cavity.
According to a second aspect of the invention, described leakage way can be configured to allow the fluid in described back pressure cavity to leak to described high pressure side.
According to a third aspect of the present invention, described leakage way can be formed in described black box.
According to a fourth aspect of the present invention, described black box can be arranged in described recess, and described black box can comprise: prevent that fluid from flowing to described back pressure cavity and still allowing fluid to flow to described on high-tension side the first Sealing and prevent that fluid from flowing to described high pressure side from described back pressure cavity and still allowing fluid from described high pressure side, to flow to the second Sealing of described back pressure cavity from described back pressure cavity from described high pressure side.
According to a fifth aspect of the present invention, described leakage way can be formed in described the second Sealing.
According to a sixth aspect of the invention, described the second Sealing can comprise: the body of ring-type and determine that vortex end plate extends and against the sealing lip of the radially inner side wall of described recess, described leakage way is formed in the sealing lip of described the second Sealing towards described from described body roughly.
According to a seventh aspect of the present invention, described leakage way can be for being formed on the through hole in the sealing lip of described the second Sealing.
According to an eighth aspect of the present invention, described leakage way can be for being formed on the otch at edge of the sealing lip of described the second Sealing.
According to a ninth aspect of the present invention, described leakage way can be for being formed on the body of described the second Sealing or the through hole in sealing lip.
According to a tenth aspect of the present invention, described black box can also comprise the intermediate plate being arranged between described the first Sealing and described the second Sealing, in the position corresponding with described through hole of described intermediate plate, is formed with otch.
According to an eleventh aspect of the present invention, described black box can be arranged in described recess, and described black box can comprise: prevent that fluid from flowing to described back pressure cavity and still allowing fluid to flow to described on high-tension side the first Sealing and prevent that fluid from flowing to described high pressure side and preventing that fluid from flowing to the second Sealing of described back pressure cavity from described high pressure side from described back pressure cavity from described back pressure cavity from described high pressure side.
According to a twelfth aspect of the present invention, described the second Sealing can be O shape circle.
According to the 13 aspect of the present invention, described black box can comprise the lower plate that supports described the second Sealing, can be formed with the passage that the fluid allowing in described back pressure cavity enters the space between described the first Sealing and described the second Sealing in described lower plate.
According to the 14 aspect of the present invention, described leakage way can be formed in the radially inner side wall of described recess.
According to the 15 aspect of the present invention, described black box can be arranged in described recess, described black box can comprise: prevent that fluid from flowing to described back pressure cavity and still allowing fluid to flow to described on high-tension side the first Sealing and prevent that fluid from flowing to described high pressure side from described back pressure cavity and still allowing fluid from described high pressure side, to flow to the second Sealing of described back pressure cavity from described back pressure cavity from described high pressure side, and described leakage way is configured to be formed on the groove on the radially inner side wall of described recess in the position corresponding with described the second Sealing.
According to the 16 aspect of the present invention, described groove does not extend to the position of described the first Sealing.
According to the 17 aspect of the present invention, described black box can comprise: be arranged on the described relief opening of determining scroll element around to prevent that fluid from flowing to described back pressure cavity and still allowing fluid to flow to described on high-tension side the first Sealing from described back pressure cavity from described high pressure side, and be arranged in described recess to prevent that fluid from flowing to described high pressure side from described back pressure cavity and still allowing fluid to flow to the second Sealing of described back pressure cavity from described high pressure side.
According to the 18 aspect of the present invention, described leakage way structure can cause through hole or the slit being formed in described the second Sealing.
According to the 18 aspect of the present invention, described black box can also comprise and being arranged in described recess to prevent that fluid from flowing to the 3rd Sealing of described low voltage side from described back pressure cavity.
According to nineteen of the present invention aspect, described black box can also comprise and prevents that fluid from flowing to the 3rd Sealing of described low voltage side from described back pressure cavity.
According to the 20 aspect of the present invention, described the 3rd Sealing can comprise the body of ring-type roughly and towards described, determine that vortex end plate extends and against the sealing lip of the radial outside wall of described recess from described body.
According to the 22 aspect of the present invention, described scroll compressor may further include the dividing plate that the inner space of described scroll compressor is separated into described high pressure side and described low voltage side, and described black box is arranged on described dividing plate and describedly determines between scroll element.
According to the 23 aspect of the present invention, the smallest cross-section area of described leakage way can be 1/2 times to 3 times of the smallest cross-section area of described middle pressure passageway.
According to the 24 aspect of the present invention, the smallest cross-section area of described leakage way can be arranged to be less than the smallest cross-section area of described middle pressure passageway.
According to the 25 aspect of the present invention, the smallest cross-section area of described leakage way is arranged to 0.8 times to 1.2 times of smallest cross-section area of described middle pressure passageway.
Although described various mode of execution of the present invention in detail at this, but should be appreciated that the present invention is not limited to the embodiment of describing in detail and illustrating here, in the situation that not departing from the spirit and scope of the invention, can be realized by those skilled in the art other modification and variant.All these modification and variant all fall within the scope of the present invention.And all members described here can be replaced by the member being equal in other technologies.
Claims (25)
1. a scroll compressor (100), comprising:
Moving scroll element (160), described moving scroll element (160) comprises moving vortex end plate (164) and is formed on the spiral helicine moving volution blade (166) of described moving vortex end plate one side;
Determine scroll element (150), describedly determine scroll element (150) and comprise and determine vortex end plate (154), be formed on and describedly determine the spiral helicine of vortex end plate one side and determine volution blade (156) and be formed on the described recess (158) of determining vortex end plate opposite side, described recess (158) is communicated with a fluid in described moving volution blade (166) and described a series of compression chambers (C1, C2, C3) of determining to form between volution blade (156) via middle pressure passageway (155);
Black box (PS1, PS2, PS3, PS4, PS5, PS6), described black box (PS1, PS2, PS3, PS4, PS5, PS6) coordinate jointly to form back pressure cavity (BC) with described recess (158), and described black box (PS1, PS2, PS3, PS4, PS5, PS6) be configured to described back pressure cavity (BC) and high pressure side and low voltage side in described scroll compressor (100) to separate; And
Leakage way (L), described leakage way (L) is configured to allow the fluid leakage in described back pressure cavity (BC).
2. scroll compressor as claimed in claim 1, wherein said leakage way (L) is configured to allow the fluid in described back pressure cavity (BC) to leak to described high pressure side.
3. scroll compressor as claimed in claim 2, wherein said leakage way (L) is formed in described black box (PS1, PS2, PS3, PS4).
4. scroll compressor as claimed in claim 3, wherein said black box (PS1, PS2, PS3) is arranged in described recess (158), and
Described black box (PS1, PS2, PS3) comprising: prevent that fluid from flowing to described back pressure cavity (BC) and still allowing fluid to flow to described on high-tension side the first Sealing (S3) and prevent that fluid from flowing to described high pressure side from described back pressure cavity (BC) and still allowing fluid from described high pressure side, to flow to second Sealing (S4) of described back pressure cavity (BC) from described back pressure cavity (BC) from described high pressure side.
5. scroll compressor as claimed in claim 4, wherein said leakage way (L) is formed in described the second Sealing (S4).
6. scroll compressor as claimed in claim 4, wherein said the second Sealing (S4) comprising: the body of ring-type (S42) and determine that vortex end plate (154) extends and against the sealing lip (S44) of the radially inner side wall of described recess (158), described leakage way (L) is formed in the sealing lip (S44) of described the second Sealing (S4) towards described from described body (S42) roughly.
7. scroll compressor as claimed in claim 6, wherein said leakage way (L) is for being formed on the through hole (S46) in the sealing lip (S44) of described the second Sealing (S4).
8. scroll compressor as claimed in claim 6, wherein said leakage way (L) is for being formed on the otch (S47) at edge of the sealing lip (S44) of described the second Sealing (S4).
9. scroll compressor as claimed in claim 6, wherein said leakage way (L) is for being formed on the body (S42) of described the second Sealing (S4) or the through hole (S46) in sealing lip (S44).
10. scroll compressor as claimed in claim 9, wherein said black box (PS3) also comprises the intermediate plate (S6) being arranged between described the first Sealing (S3) and described the second Sealing (S4), in the position corresponding with described through hole (S46) of described intermediate plate (S6), is formed with otch (S62).
11. scroll compressors as claimed in claim 3, wherein said black box (PS4) is arranged in described recess (158), and
Described black box (PS4) comprising: prevent that fluid from flowing to described back pressure cavity (BC) and still allowing fluid to flow to described on high-tension side the first Sealing (S3) and prevent that fluid from flowing to described high pressure side and preventing that fluid from flowing to second Sealing (S4) of described back pressure cavity (BC) from described high pressure side from described back pressure cavity (BC) from described back pressure cavity (BC) from described high pressure side.
12. scroll compressors as claimed in claim 11, wherein said the second Sealing (S4) is O shape circle.
13. scroll compressors as claimed in claim 11, wherein said black box (PS4) comprises the lower plate (S2) that supports described the second Sealing (S4), is formed with the passage (S22) that the fluid allowing in described back pressure cavity (BC) enters the space between described the first Sealing (S3) and described the second Sealing (S4) in described lower plate (S2).
14. scroll compressors as claimed in claim 2, wherein said leakage way (L) is formed in the radially inner side wall (1581) of described recess (158).
15. scroll compressors as claimed in claim 14, wherein said black box (PS5) is arranged in described recess (158),
Described black box (PS5) comprising: prevent that fluid from flowing to described back pressure cavity (BC) but allow fluid to flow to described on high-tension side the first Sealing (S3) and prevent that fluid from flowing to described high pressure side from described back pressure cavity (BC) but allow fluid from described high pressure side, to flow to second Sealing (S4) of described back pressure cavity (BC) from described back pressure cavity (BC) from described high pressure side, and
Described leakage way (L) is configured to be formed on the groove (1582) on the radially inner side wall (1581) of described recess (158) in the position corresponding with described the second Sealing (S4).
16. scroll compressors as claimed in claim 15, wherein said groove (1582) does not extend to the position of described the first Sealing (S3).
17. scroll compressors as claimed in claim 3, wherein said black box (PS6) comprising: be arranged on the described relief opening (152) of determining scroll element (150) around to prevent that fluid from flowing to described back pressure cavity (BC) and still allowing fluid to flow to described on high-tension side the first Sealing (S3) from described back pressure cavity (BC) from described high pressure side, and be arranged in described recess (158) to prevent that fluid from flowing to described high pressure side from described back pressure cavity (BC) and still allowing fluid to flow to second Sealing (S4) of described back pressure cavity (BC) from described high pressure side.
18. scroll compressors as claimed in claim 17, wherein said leakage way (L) is configured to define through hole or the slit (S46) in described the second Sealing (S4).
19. scroll compressors as claimed in claim 18, wherein said black box (PS6) also comprises and being arranged in described recess (158) to prevent that fluid from flowing to the 3rd Sealing (S5) of described low voltage side from described back pressure cavity (BC).
20. scroll compressors as described in any one in claim 1-16, wherein said black box (PS1, PS2, PS3, PS4, PS5) also comprises and prevents that fluid from flowing to the 3rd Sealing (S5) of described low voltage side from described back pressure cavity (BC).
21. scroll compressors as claimed in claim 20, wherein said the 3rd Sealing (S5) comprises the body of ring-type (S52) roughly and towards described, determines that vortex end plate (154) extends and against the sealing lip (S54) of the radial outside wall of described recess (158) from described body (S52).
22. scroll compressors as described in any one in claim 1-19, further comprise the dividing plate (116) that the inner space of described scroll compressor is separated into described high pressure side and described low voltage side, described black box (PS1, PS2, PS3, PS4, PS5, PS6) be arranged on described dividing plate and describedly determine between scroll element.
23. scroll compressors as described in any one in claim 1-19, the smallest cross-section area of wherein said leakage way (L) is 1/2 times to 3 times of smallest cross-section area of described middle pressure passageway (155).
24. scroll compressors as claimed in claim 23, the smallest cross-section area of wherein said leakage way (L) is arranged to be less than the smallest cross-section area of described middle pressure passageway (155).
25. scroll compressors as claimed in claim 23, the smallest cross-section area of wherein said leakage way (L) is arranged to 0.8 times to 1.2 times of smallest cross-section area of described middle pressure passageway (155).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020858.XA CN103939338B (en) | 2013-01-21 | 2013-01-21 | Scroll compressor having a plurality of scroll members |
| PCT/CN2013/086182 WO2014110930A1 (en) | 2013-01-21 | 2013-10-30 | Scroll compressor |
| US14/761,453 US9897088B2 (en) | 2013-01-21 | 2013-10-30 | Scroll compressor with back pressure chamber having leakage channel |
| EP13872265.7A EP2947320B1 (en) | 2013-01-21 | 2013-10-30 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020858.XA CN103939338B (en) | 2013-01-21 | 2013-01-21 | Scroll compressor having a plurality of scroll members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103939338A true CN103939338A (en) | 2014-07-23 |
| CN103939338B CN103939338B (en) | 2017-03-15 |
Family
ID=51187169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310020858.XA Active CN103939338B (en) | 2013-01-21 | 2013-01-21 | Scroll compressor having a plurality of scroll members |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103939338B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306959A (en) * | 2018-11-26 | 2019-02-05 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of back pressure cavity structure of voltage regulation and the screw compressor with it |
| CN110005607A (en) * | 2019-04-30 | 2019-07-12 | 南安紫鲸铃工业设计有限公司 | A kind of screw compressor back pressure apparatus |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060699A (en) * | 1990-10-01 | 1992-04-29 | 科普兰公司 | The scroll machine of band floating seal |
| CN1113547A (en) * | 1994-05-04 | 1995-12-20 | 科普兰公司 | Scroll machine with reverse rotation protection |
| JP2001027188A (en) * | 1999-07-13 | 2001-01-30 | Daikin Ind Ltd | Scroll fluid machine |
| CN1349053A (en) * | 2000-10-16 | 2002-05-15 | 科普兰公司 | Double volume ratio whiral machinery |
| CN1475673A (en) * | 2002-07-15 | 2004-02-18 | Turbo machine having dual volume ratio | |
| US20040126246A1 (en) * | 2002-12-30 | 2004-07-01 | Industrial Technology Research Institute | Load-regulating device for scroll type compressors |
| US20050142017A1 (en) * | 2003-12-25 | 2005-06-30 | Kun-Yi Liang | Scroll compressor with backflow-proof mechanism |
| US20120107163A1 (en) * | 2010-10-28 | 2012-05-03 | Emerson Climate Technologies, Inc. | Compressor seal assembly |
| CN203051114U (en) * | 2013-01-21 | 2013-07-10 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
-
2013
- 2013-01-21 CN CN201310020858.XA patent/CN103939338B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060699A (en) * | 1990-10-01 | 1992-04-29 | 科普兰公司 | The scroll machine of band floating seal |
| CN1113547A (en) * | 1994-05-04 | 1995-12-20 | 科普兰公司 | Scroll machine with reverse rotation protection |
| JP2001027188A (en) * | 1999-07-13 | 2001-01-30 | Daikin Ind Ltd | Scroll fluid machine |
| CN1349053A (en) * | 2000-10-16 | 2002-05-15 | 科普兰公司 | Double volume ratio whiral machinery |
| CN1475673A (en) * | 2002-07-15 | 2004-02-18 | Turbo machine having dual volume ratio | |
| US20040126246A1 (en) * | 2002-12-30 | 2004-07-01 | Industrial Technology Research Institute | Load-regulating device for scroll type compressors |
| US20050142017A1 (en) * | 2003-12-25 | 2005-06-30 | Kun-Yi Liang | Scroll compressor with backflow-proof mechanism |
| US20120107163A1 (en) * | 2010-10-28 | 2012-05-03 | Emerson Climate Technologies, Inc. | Compressor seal assembly |
| CN203051114U (en) * | 2013-01-21 | 2013-07-10 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306959A (en) * | 2018-11-26 | 2019-02-05 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of back pressure cavity structure of voltage regulation and the screw compressor with it |
| CN109306959B (en) * | 2018-11-26 | 2024-05-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Back pressure cavity pressure stabilizing structure and vortex compressor with same |
| CN110005607A (en) * | 2019-04-30 | 2019-07-12 | 南安紫鲸铃工业设计有限公司 | A kind of screw compressor back pressure apparatus |
| CN110005607B (en) * | 2019-04-30 | 2020-12-04 | 浙江颐顿机电有限公司 | Backpressure device of scroll compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103939338B (en) | 2017-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205578273U (en) | Oil pumping mechanism and horizontal compressor with same | |
| CN103807166A (en) | Scroll compressor having a plurality of scroll members | |
| JP5880513B2 (en) | Compressor | |
| CN101952595A (en) | Open drive scroll compressor with lubrication system | |
| KR101942252B1 (en) | Compressor with oil pump assembly | |
| EP2177766A2 (en) | Scroll compressor and refrigerating machine having the same | |
| CN203098281U (en) | Scroll compressor having a plurality of scroll members | |
| US8118563B2 (en) | Tandem compressor system and method | |
| JP2007085297A (en) | Scroll compressor | |
| CN203051114U (en) | Scroll compressor having a plurality of scroll members | |
| CN105508250A (en) | Balancing piece, rotor subassembly and rotary compressor | |
| CN103939338A (en) | Scroll compressor having a plurality of scroll members | |
| JP6425744B2 (en) | Compressor | |
| KR20200040802A (en) | Rotating mechanism | |
| EP2947320A1 (en) | Scroll compressor | |
| JP6134903B2 (en) | Positive displacement compressor | |
| CN203412767U (en) | Scroll compressor and refrigeration/heat pump system | |
| CN107781160A (en) | Scroll compressor having a plurality of scroll members | |
| CN206000727U (en) | Scroll compressor having a plurality of scroll members | |
| JP2017015054A (en) | Single screw compressor | |
| CN106567833B (en) | Rotary compressor and method for improving lubricating effect thereof | |
| JP2005201171A (en) | Lubricating mechanism of compressor | |
| CN109404289B (en) | Rotary machine | |
| CN103967784A (en) | Compressor | |
| CN104421151A (en) | Scroll compressor, lubricant supply method thereof, and refrigeration/heat pump system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |