CN209340202U - Shaft seal part, compressor and refrigerant circulating system - Google Patents
Shaft seal part, compressor and refrigerant circulating system Download PDFInfo
- Publication number
- CN209340202U CN209340202U CN201822188596.9U CN201822188596U CN209340202U CN 209340202 U CN209340202 U CN 209340202U CN 201822188596 U CN201822188596 U CN 201822188596U CN 209340202 U CN209340202 U CN 209340202U
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- axle envelope
- bearing
- component
- fluid
- shaft seal
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- 239000003507 refrigerant Substances 0.000 title abstract description 3
- 239000012530 fluid Substances 0.000 claims abstract description 108
- 238000009792 diffusion process Methods 0.000 claims description 16
- 239000002826 coolant Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 10
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 29
- 238000005339 levitation Methods 0.000 description 11
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 230000002706 hydrostatic effect Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000112 cooling gas Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The disclosure provides a shaft seal component, a compressor and a refrigerant circulating system. The shaft seal member includes: the center of the shaft seal disc body is provided with a shaft hole, and a shaft seal structure is arranged on the hole wall of the shaft hole; the shaft seal positioning spigot is coaxially and integrally arranged at one axial end of the shaft seal disc body, and a first fluid channel communicated with the radial inner side and the radial outer side of the shaft seal positioning spigot is arranged on the shaft seal positioning spigot. The utility model provides a shaft seal part has shaft seal, location and discharge fluid function concurrently, and shaft seal location tang does benefit to and improves the cooperation precision between shaft seal part and the sealed pivot, can prevent fluid leakage more effectively, and first fluid passage does benefit to and prevents to be detained the fluid with the adjacent part of shaft seal part, does benefit to the backpressure of stabilizing relevant part to do benefit to and promote bearing rotor system stability.
Description
Technical field
This disclosure relates to compressor and coolant circulating system, in particular to a kind of axle envelope component, compressor and refrigerant circulation
System.
Background technique
Hydrostatic gas-lubricated bearing has superhigh precision, ultra-low friction, ultralow vibration, super low noise, service life long, pollution-free etc. excellent
Point, while being suitable for high revolving speed and high-precision occasion, it especially minimizes in centrifugal compressor in centrifugal compressor with wide
Application prospect.
Hydrostatic gas-lubricated bearing needs external air source to supply, it is desirable that bearing working back pressure is stablized, and prevents bearing back-pressure surges from making
It is destroyed at air film, destroys bearing rotor system unstability.
Utility model content
The disclosure is designed to provide a kind of axle envelope component, compressor and coolant circulating system.
Disclosure first aspect provides a kind of axle envelope component, comprising:
Axle envelope disk body, axle envelope disk body center have axis hole, and the hole wall of the axis hole is equipped with shaft seal structure；
Axle envelope positioning spigot, axial one end that is coaxial and being integrally provided to the axle envelope disk body, the axle envelope positioning stop
Mouth is equipped with the first fluid channel of the radially inner side and radial outside that are connected to the axle envelope positioning spigot.
In some embodiments, the shaft seal structure includes comb structure.
In some embodiments, the axle envelope positioning spigot has far from one end of the axle envelope disk body for radial axle
Hold the bearing positioning end face for carrying out axially position.
In some embodiments, the first fluid channel includes:
At least one through-hole being set on the side wall of the axle envelope positioning spigot；And/or
It is recessed from one end far from the axle envelope disk body of the axle envelope positioning spigot to one end close to the axle envelope disk body
The groove entered.
In some embodiments, the axle envelope component includes multiple first fluid channels.
In some embodiments, the multiple first fluid channel is uniformly arranged along the circumferential direction of the axle envelope positioning spigot.
In some embodiments, the multiple first fluid channel is along the circumferential with 360 °/(n+ of the axle envelope positioning spigot
1) angle interval is uniformly arranged, wherein n is the quantity in the multiple first fluid channel.
In some embodiments, the axle envelope component include the axle envelope connecting hole being set on the axle envelope disk body and/or
Axle envelope location hole.
In some embodiments, the diameter of the inner peripheral surface of the axle envelope positioning spigot is greater than the diameter of the axis hole.
Disclosure second aspect provides a kind of compressor, comprising:
Compressor drum, including main shaft；
Transverse bearing, for carrying the main shaft；With
Axle envelope component, is axle envelope component described in disclosure first aspect, and the main shaft is arranged in the axle envelope component
In the axis hole, the shaft seal structure of the axle envelope component and the main shaft cooperate, the axle envelope component it is described first-class
Gap between body channel and the transverse bearing and the main shaft is connected to.
In some embodiments, the compressor further includes loading ability of bearing component, and loading ability of bearing component includes:
Diffuser has axle envelope mounting hole, and axial one end of the diffuser is provided with diffusion structure, the axle envelope component
It is set in the axle envelope mounting hole；
Bearing block is integrally formed at the axial other end of the diffuser, and the bearing block is equipped with to be installed with the axle envelope
Hole is coaxially and the bearing chamber of connection, the transverse bearing are set in the bearing chamber.
In some embodiments, the loading ability of bearing component includes fluid entering channel, the fluid entering channel connection
The bearing chamber and the loading ability of bearing component outer.
In some embodiments, the loading ability of bearing component includes fluid outlet passage, the fluid outlet passage connection
The axle envelope mounting hole and the loading ability of bearing component outer, the first fluid channel is connected to the fluid outlet passage.
In some embodiments, the axle envelope positioning spigot has far from one end of the axle envelope disk body for radial axle
Hold the bearing positioning end face for carrying out axially position.
In some embodiments, the axle envelope mounting hole is stepped hole, including being located at close to one end of the diffusion structure
Major diameter section and one end far from the diffusion structure path section, it is fixed that step is formed between the major diameter section and the path section
Plane, the axle envelope disk body are located in the major diameter section, and the axle envelope positioning spigot is located in the path section, the axle envelope disk
The end face close to the axle envelope positioning spigot of body is abutted with the step positioning surface.
In some embodiments, the transverse bearing is gas bearing.
The disclosure third aspect provides a kind of coolant circulating system, including compressor described in disclosure second aspect.
Axle envelope, positioning and discharge fluid function, axle envelope positioning spigot is had both based on the axle envelope component that the disclosure provides to be conducive to
The cooperation precision between axle envelope component and the shaft sealed is improved, fluid leakage, first fluid channel can be more efficiently prevented from
Conducive to the component trapped fluids adjacent with axle envelope component are prevented, conducive to the back pressure for stablizing associated components, to be conducive to promote bearing
Rotor system stability.
The axle envelope component that the compressor that the disclosure provides and coolant circulating system have the advantages that the disclosure provides is identical.
By the detailed description referring to the drawings to the exemplary embodiment of the disclosure, the other feature of the disclosure and its
Advantage will become apparent.
Detailed description of the invention
Attached drawing described herein is used to provide further understanding of the disclosure, constitutes part of this application, this public affairs
The illustrative embodiments and their description opened do not constitute the improper restriction to the disclosure for explaining the disclosure.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the compressor of one embodiment of the disclosure.
Fig. 2 is the schematic perspective view of the axle envelope component of one embodiment of the disclosure.
Fig. 3 is the side structure schematic view of Fig. 2.
Fig. 4 is the schematic cross-sectional view of Fig. 2.
Fig. 5 is the partial structural diagram of the compressor of one embodiment of the disclosure.
Fig. 6 is the structural schematic diagram of the loading ability of bearing structure of the compressor of one embodiment of the disclosure.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present disclosure, the technical solution in the embodiment of the present disclosure is carried out clear, complete
Site preparation description, it is clear that described embodiment is only disclosure a part of the embodiment, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the disclosure and its application or making
Any restrictions.Based on the embodiment in the disclosure, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, belong to the disclosure protection range.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited the scope of the present disclosure processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
In the description of the disclosure, it is to be understood that limit components using the words such as " first ", " second ", only
It is merely for convenience of distinguishing corresponding components, there is no Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore not
It can be interpreted as the limitation to disclosure protection scope.
In the description of the disclosure, it is to be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, vertical,
Vertically, horizontal " and " top, bottom " etc., it is merely for convenience of the description disclosure and simplifies description, the case where not illustrating on the contrary
Under, these nouns of locality do not indicate that and imply that signified device or element must have a particular orientation or with specific orientation
Construction and operation, therefore should not be understood as the limitation to disclosure protection scope；The noun of locality " inside and outside " refers to relative to each component
The profile of itself it is inside and outside.
As shown in Figures 1 to 5, the embodiment of the present disclosure provides a kind of axle envelope component 70.The axle envelope component 70 includes axle envelope disk
Body 71 and axle envelope positioning spigot 72.71 center of axle envelope disk body has axis hole, and the hole wall of axis hole is equipped with shaft seal structure.Axle envelope positioning
Seam allowance 72 is coaxial and is integrally provided to axial one end of axle envelope disk body 71, and axle envelope positioning spigot 72 is equipped with connection axle envelope positioning
The radially inner side of seam allowance 72 and the first fluid channel of radial outside.
The axle envelope component 70 of the embodiment of the present disclosure has both axle envelope, positioning and discharge fluid function, 72 benefit of axle envelope positioning spigot
In improving the cooperation precision between axle envelope component 70 and the shaft (main shaft 21 of such as compressor) sealed, can more effectively prevent
The leakage of fluid stopping body, first fluid channel are conducive to component (such as transverse bearing) trapped fluids for preventing from cooperating with axle envelope component 70, benefit
In the back pressure for stablizing associated components, to be conducive to promote bearing rotor system stability.
As shown in Figures 1 to 5, in some embodiments, shaft seal structure includes comb structure 711.Comb structure 711 is more suitable
In sealing gas, it is suitable for the application of in compressor, can effectively prevent compressed gas leakage.
As shown in Figures 1 to 5, in some embodiments, axle envelope positioning spigot 72 has far from one end of axle envelope disk body 71
Bearing for carrying out axially position to transverse bearing positions end face 721.Bearing positioning end face 721 has both axle envelope component 70
The axial positioning function of transverse bearing, conducive to the structure for simplifying place device, the rotor length of device where shortening.
The structure type in first fluid channel can be a variety of, for example, as shown in Figures 1 to 5, in some embodiments,
First fluid channel includes from one end far from axle envelope disk body 71 to the groove 722 that one end close to axle envelope disk body 71 is recessed.?
In embodiment (not shown), first fluid channel may include that at least one being set on the side wall of axle envelope positioning spigot 72 is led to
Hole.Groove and through-hole can also be set simultaneously as first fluid channel.
As shown in Figure 3 and Figure 4, in some embodiments, axle envelope component 70 includes multiple first fluid channels.It is arranged multiple
First fluid channel be conducive to the fluid near associated components such as transverse bearing quickly, uniformly discharge, conducive to prevent fluid in correlation
Component is nearby detained.
As shown in Figure 3 and Figure 4, in some embodiments, circumferential direction of multiple first fluid channels along axle envelope positioning spigot 72
It is uniformly arranged.The setting be conducive to the fluid near associated components such as transverse bearing quickly, uniformly discharge, conducive to prevent fluid in phase
Component is closed nearby to be detained.
In some embodiments, multiple first fluid channels are along the circumferential angle with 360 °/n+1 of axle envelope positioning spigot 72
Degree interval is uniformly arranged, wherein n is the quantity in multiple first fluid channels.The quantity of n can be 2,3,4,5,6 or more.Such as
In Fig. 3 and embodiment shown in Fig. 4, n=5.The quantity and distribution mode in first fluid channel are conducive to and are set to loading ability of bearing
The quantity and distribution mode of fluid outlet passage 64 on component 60 are corresponding.The set-up mode is conducive to as be described hereinafter with associated components
Loading ability of bearing component 60 cooperatively form fluid drain passageway, reserved set conducive to the setting of the fluid entering channel for associated components
Seated position.
Axle envelope component 70 includes the axle envelope connecting hole 712 and/or axle envelope location hole 713 being set on axle envelope disk body 71.Axis
Envelope location hole 713 can accurately determine the connection position between axle envelope component 70 and associated components loading ability of bearing component 60 as be described hereinafter
It sets, is conducive to quickly, accurately realize that (the fluid outflow of such as loading ability of bearing component 60 is logical with corresponding fluid channel in first fluid channel
Road 64) connection.Axle envelope connecting hole 712, which is conducive to be connected through a screw thread part, to be realized and is detachably connected with associated components.
As shown in Figures 1 to 5, in some embodiments, the diameter of the inner peripheral surface of axle envelope positioning spigot 72 is greater than axle envelope disk
The diameter of the axis hole of body 71.The setting is conducive to be connected to the gap between first fluid channel and transverse bearing and main shaft 21, and
It is evenly distributed between each first fluid channel conducive to fluid.
The embodiment of the present disclosure also provides a kind of compressor, including compressor drum 20, transverse bearing and axle envelope component 70.Pressure
Contracting machine rotor 20 includes main shaft 21.Transverse bearing is for carrying main shaft 21.Axle envelope component 70 is axle envelope component 70 above-mentioned.Main shaft
21 are arranged in the axis hole of axle envelope component 70.The shaft seal structure and main shaft 21 of axle envelope component 70 cooperate.First fluid channel and diameter
It is connected to the gap between bearing and main shaft 21.The setting is conducive to that fluid is prevented to be detained near transverse bearing, is conducive to keep diameter
Stablize to the back pressure of bearing, to be conducive to guarantee compressor stable operation.
As shown in Fig. 1 and Fig. 5, Fig. 6, in some embodiments, compressor further includes loading ability of bearing component 60, loading ability of bearing
Component 60 includes diffuser and bearing block.Diffuser has axle envelope mounting hole 67, axial one end (Fig. 1, Fig. 5 and Fig. 6 of diffuser
Right end) be provided with diffusion structure.Diffusion structure for example can be diffusion face or diffusion blade.Axle envelope component 70 is set to axle envelope
In mounting hole 67.Bearing block is integrally formed at the axial other end of diffuser.Bearing block be equipped with axle envelope mounting hole 67 it is coaxial and
The bearing chamber 62 of connection.Transverse bearing is set in bearing chamber 62.Loading ability of bearing component 60 undertake simultaneously diffuser, bearing block with
Transverse bearing is installed in loading ability of bearing component 60 by the function of axle envelope component installation, the cooperation of axle envelope component 70, is conducive to compressor
Shorten compressor drum length, mitigate compressor drum weight, conducive to the critical speed for improving compressor drum.
As shown in Fig. 1 and Fig. 5, Fig. 6, in some embodiments, loading ability of bearing component 60 includes fluid entering channel 63, stream
Body enters channel 63 and is connected to outside bearing chamber 62 and loading ability of bearing component 60.Fluid entering channel 63 can be supplied for transverse bearing
Fluid, such as levitation gas needed for carrying main shaft 21.Fluid entering channel 63 for example can be to be set to loading ability of bearing component 60
Internal duct.
As shown in Fig. 1 and Fig. 5, Fig. 6, in some embodiments, loading ability of bearing component 60 includes fluid outlet passage 64, even
Outside axis seal installation hole 67 and loading ability of bearing component 60, first fluid channel is connected to fluid outlet passage 64.Setting benefit
In preventing trapped fluids near transverse bearing, conducive to keeping the back pressure of transverse bearing to stablize, to be conducive to compressor steady operation.
As shown in Figures 1 to 5, the first fluid channel of axle envelope component 70 be set to it is multiple on axle envelope positioning spigot 72
Groove 722.The quantity of groove 722 is unlimited, such as can be 3-12.The fluid outlet passage 64 of loading ability of bearing structure 60 with it is recessed
The quantity of slot 722 is identical.Fluid outlet passage 64 is the duct being set to inside loading ability of bearing structure 60.
As shown in Figure 1 and Figure 5, in some embodiments, axle envelope positioning spigot 72 has far from one end of axle envelope disk body 71
Bearing for carrying out axially position to transverse bearing positions end face 721.The setting makes axle envelope component 70 while assuming responsibility for radial direction
The axial positioning function of bearing reduces compressor drum and main screw lift conducive to the length for shortening compressor drum, simplifies compression
Machine structure.Bearing positions end face 721 and the corresponding end-faces of transverse bearing for example can be with clearance fit.
As shown in Fig. 1 and Fig. 5, Fig. 6, in some embodiments, axle envelope mounting hole 67 is stepped hole, including is located at close to expansion
The path section of the major diameter section of one end of laminated structure and one end far from diffusion structure.Axle envelope disk body 71 is installed in major diameter section and big
Diameter Duan Peihe, axle envelope positioning spigot 72 is installed in path section to be cooperated with path section.Step is formed between major diameter section and path section
Positioning surface 65, the end face 714 of the close positioning ring of axle envelope disk body 71 and 65 clearance fit of step positioning surface.The setting is conducive to bearing
The axially position of component 70.Meanwhile because axle envelope component undertakes the axial positioning function of transverse bearing, also it is conducive to the axis of transverse bearing
To positioning.
As shown in fig. 6, the fluid inlet of fluid entering channel 63 is set on the end face of the axial other end of diffuser.It should
Setting is conducive to fluid and imports fluid entering channel 63 out of compression case body.
Loading ability of bearing component 60 includes multiple fluid outlet passages 64.Multiple fluid outlet passages 64 are along loading ability of bearing component
60 circumferential direction is uniformly distributed.Multiple fluid outlet passages 64 are uniformly distributed along the circumferentially-spaced 360 °/m+1 of loading ability of bearing component 60, wherein m
For the quantity of multiple fluid outlet passages 64.The quantity of m can be 2,3,4,5,6 or more.In Fig. 1 to implementation shown in fig. 6
In example, m=5.The quantity and distribution mode in first fluid channel and the fluid outlet passage being set on loading ability of bearing component 60
64 quantity and distribution mode is corresponding consistent.The circumferential direction of loading ability of bearing component 60 does not arrange the position of fluid outlet passage 64, cloth
It is equipped with fluid entering channel 63, which can make all fluid channels of loading ability of bearing component 60 substantially be evenly distributed, and be conducive to
Accurate positioning when fluid channel processing and loading ability of bearing component 60 assemble.
As shown in Fig. 1, Fig. 5 and Fig. 6, the fluid outlet of fluid outlet passage 64 is set to the axial second end of diffuser
On end face and/or on the outer peripheral surface of bearing block.
Loading ability of bearing component 60 includes the bearing for being used to carry out transverse bearing axially position for being set to the axial other end
Location structure.Bearing location structure includes annular groove 66.Annular groove 66 is set on the side wall of bearing chamber 62.Snap ring 81 is installed on annular groove
In 66, the inner circumferential diameter of snap ring 81 is less than the diameter of bearing chamber 62.
Loading ability of bearing component 60 further includes being set to the load bearing component positioning spigot 68 of the axial other end of diffuser and setting
The diffuser location hole 69 and diffuser mounting hole being placed on diffuser.The shell 10 of load bearing component positioning spigot 68 and compressor
Motor cylinder 11 right end inner wall cooperation, to determine radial position and the axial position of loading ability of bearing component 60.Loading ability of bearing
Component 60 by be arranged between the locating piece of diffuser location hole 69 and shell 10 carry out it is circumferentially positioned, by pass through diffuser
The threaded connector of mounting hole is fixedly connected with shell 10.
The embodiment of the present disclosure also provides a kind of coolant circulating system, including compressor above-mentioned.
The compressor and coolant circulating system of the embodiment of the present disclosure have the corresponding of the axle envelope component 70 of the embodiment of the present disclosure
Advantage.
Combine Fig. 1 to Fig. 6 that some embodiments of the disclosure are described in more detail further below.
As shown in Figure 1, compressor mainly includes shell 10, compressor drum 20, motor stator 30, bearing assembly, level-one
Diffuser 50, loading ability of bearing component 60 and axle envelope component 70.
Shell 10 includes motor cylinder 11 and the level-one spiral case 12 and second level that are connected to 11 left and right ends of motor cylinder
Spiral case 13.The left end of motor cylinder 11 has end wall, and right end is open.
It level-one diffuser 50 and loading ability of bearing component 60 and is installed in the axle envelope mounting hole 67 of loading ability of bearing component 60
Axle envelope component 70 is respectively arranged at the left and right ends of motor cylinder 11, and the inner space of shell 10 is divided into positioned at shell 10
The motor accommodating chamber 14 at middle part, the one stage of compression chamber 15 positioned at 10 left end of shell and the two-stage compression chamber positioned at 10 right end of shell
16。
Compressor drum 20 mainly includes main shaft 21, one stage impeller 22, sencond stage impeller 23 and thrust disk component 24.
Motor stator 30 is fixed on 11 inner wall of motor cylinder, has rotor mounting hole.It can be set on 11 inner wall of motor cylinder
Helicla flute is set, for being passed through the cooling fluid of cooling motor stator 30.
Main shaft 21 is set in motor stator 30, through the rotor mounting hole of motor stator 30.It is equipped with and uses in the middle part of main shaft 21
In the permanent magnet for generating magnetic field, the left and right ends of permanent magnet are respectively equipped with first end shaft part and the second end shaft part.Therefore, originally
In embodiment, main shaft 21 is also the rotor of the motor of compressor.Motor stator 30 and main shaft 21 constitute the motor of compressor.
The winding of motor stator 30 drives main shaft 21 to rotate after being powered, so that entire compressor drum be driven to rotate.
One stage impeller 22 and sencond stage impeller 23 are respectively fixedly connected in the left and right ends of main shaft 21.One stage impeller 22 and level-one
The diffusion structure of diffuser 50 is located in one stage of compression chamber 15.Diffusion structure bit on sencond stage impeller 23 and loading ability of bearing component 60
In in two-stage compression chamber 16.
Thrust disk component 24 is arranged close to one stage impeller 22, including thrust disc and the installation set being wholely set.Thrust pan portion
Part 24 is fixedly set in the first end shaft part periphery of main shaft 21.Installation set is between one stage impeller 22 and thrust disc.It pushes away
Power disk component 24 can be set on the first end shaft part of main shaft 21 by way of hot jacket.
Bearing assembly includes thrust bearing assembly 41, the first transverse bearing 42 and the second transverse bearing.
As shown in Figure 1, thrust bearing assembly 41 includes the first thrust bearing 411, the second thrust bearing 412 and thrust bearing
Positioning ring 413.In Fig. 1 into embodiment shown in fig. 6, the first thrust bearing 411, the second thrust bearing 412, the first radial axle
Hold 42 and second transverse bearing be hydrostatic gas-lubricated bearing.
The left end of level-one diffuser 50 has diffusion structure, such as diffusion face or diffusion blade.The center of level-one diffuser 50
Equipped with axis hole, shaft seal structure, such as comb structure are equipped in axis hole.The installation set of thrust disk component 24 is located at level-one diffuser 50
In axis hole, and cooperate with the shaft seal structure being arranged in axis hole.The radial outer end of level-one diffuser 50 is sealingly fixed to motor cylinder
On the end wall of body 11, so that the motor that 10 middle part of one stage of compression chamber 15 and shell of 10 left end of shell is isolated in level-one diffuser 50 holds
Receive chamber 14.
As shown in Figure 1, the right end of level-one diffuser 50 has diffuser positioning spigot, the end wall left end of motor cylinder 11 has
There is diffuser installing port, the diffuser positioning spigot of level-one diffuser 50 is installed in diffuser installing port and installs with diffuser
Mouth cooperation, to realize axially and radially locating for level-one diffuser 50.Inside the diffuser positioning spigot of level-one diffuser 50
Thrust bearing assembly installation room is defined with the bottom wall of the diffuser installing port of motor cylinder 11.
It is indoor that thrust bearing assembly 41 is set to thrust bearing assembly installation.The left and right two of the thrust disc of thrust disk component 24
End face cooperates with the second thrust face of the first thrust face of the first thrust bearing 411 and the second thrust bearing 412 respectively, to push away
Power disk and the first thrust bearing 411 and the second thrust bearing 412 limit the axial position of compressor drum 21 jointly.
The radial outer end of first thrust face of the first thrust bearing 411 is additionally provided with the first positioning surface, the second thrust bearing
The radial outer end of 412 the second thrust face is additionally provided with the second positioning surface, the left and right ends difference of thrust bearing positioning ring 413
With the first positioning surface and the second positioning surface clearance fit, thus, the distance between the left and right ends of thrust bearing positioning ring 413
The distance between the first thrust face and the second thrust face can be limited, can limit thrust disc and the first thrust face gap and
The sum of gap between thrust disc and the second thrust face.Thrust bearing positioning ring 413 is connected through a screw thread part and is fixedly connected on
On two thrust bearings 42 and the end wall of motor cylinder 11.
Thrust bearing positioning ring 413 is equipped with the second fluid channel for being connected to its radially inner side and radial outside.The
Two fluid channels are conducive to guarantee that the back pressure of thrust bearing assembly is stablized, to be conducive to the steady operation of compressor.
The radial middle part of the end wall of motor cylinder 10 is provided with end wall bearing chamber, and the first transverse bearing 42 is set to end wall axis
It holds in room.The side clearance fit far from the second thrust face of the left end of first transverse bearing 42 and the second thrust bearing 412, the
The right end of one transverse bearing 42 and 82 clearance fit of snap ring being mounted in the card slot of end wall bearing chamber, thus the first transverse bearing
42 axial position is determined jointly by the second thrust bearing 412 and snap ring 82.
Loading ability of bearing component 60 is integrated with diffuser (being second level diffuser in embodiment shown in FIG. 1) and bearing block, the
Two transverse bearings 43 are installed in the bearing chamber 62 of loading ability of bearing component 60.Second transverse bearing 43 is set in the second of main shaft 21
End shaft part periphery.
Axle envelope component 70 is fixedly installed in the axle envelope mounting hole 67 of loading ability of bearing component 60.As previously mentioned, loading ability of bearing
Component 60 is fixedly installed in the right end of motor cylinder 11.It and is to be tightly connected between loading ability of bearing component 60 and motor cylinder 11.
After axle envelope component 70 is installed on loading ability of bearing component 60 and is set in outside main shaft 21, the axle envelope knot in the axis hole of parts of bearings 70
Sealing, the radial direction of parts of bearings 70 radial outer end and loading ability of bearing component 60 are formed between structure and the second end shaft part of main shaft 21
Inner end is tightly connected, so that the second compression chamber 16 that shell 10 is isolated with loading ability of bearing component 60 for axle envelope component 70 is accommodated with motor
Chamber 14.
After loading ability of bearing component 60, axle envelope component 70 and the second transverse bearing 43 assemble, the bearing of axle envelope component 70 is fixed
The right side clearance fit of position end face 721 and the second transverse bearing 43, left end and 81 gap of snap ring of the second transverse bearing 43 are matched
It closes, so that the axial position of the second transverse bearing 43 is determined jointly by axle envelope component 70 and snap ring 81.Meanwhile axle envelope component 70
The connection corresponding with each fluid outlet passage 64 of loading ability of bearing component 60 of each first fluid channel.
As shown in Figure 1, being provided in motor cylinder 11 for being supplied to the first transverse bearing 42 and the second transverse bearing 43
The first gas of levitation gas enters channel 17.The fluid feed channel 63 of loading ability of bearing component 60 is by being set to its diffuser
Fluid inlet on end face enters channel 17 with first gas and is connected to, so as to which levitation gas is passed through loading ability of bearing component 60
Bearing chamber in, and enter by the porous media of the second transverse bearing 43 the second end of the second transverse bearing 43 and main shaft 21
Gap between shaft part enters back into 72 inner cavity of positioning ring of axle envelope component 70, then enters each correspondence through each first fluid channel
Loading ability of bearing component 60 fluid outlet passage 64, enter in motor accommodating chamber 14 later, then from being set to motor cylinder 11
On outlet outflow shell 10 (not shown).
In the present embodiment, it is additionally provided with the second gas for supplying levitation gas for thrust bearing assembly 41 on shell 10 and enters
Channel, second gas enters channel and first gas enters channel independence.The levitation gas that second gas enters channel supplies respectively
Should be to inside the first thrust bearing 411 and the second thrust bearing 412, and the porous media and second through the first thrust bearing 411
The porous media of thrust bearing 412 enters the gap between the first thrust face and thrust disc and between the second thrust face and thrust disc
Gap, then motor accommodating chamber 14 is flow to by the second fluid channel on thrust bearing positioning ring 413.Thrust bearing positioning ring
Second fluid channel on 413 is conducive to drain levitation gas in time, guarantees that the back pressure of thrust bearing assembly 41 is stablized.
In some embodiments (not shown), second gas, which enters channel and can enter channel with first gas, to be connected to, from
It and can be each branch flow passage and each gas axis corresponding with branch flow passage by same housing air inlet and identical sprue
Hold supply levitation gas.
As shown in figure 5, arrow therein indicates the flow path for being supplied to the levitation gas of the second transverse bearing 43.It suspends
Gas from the first gas of 11 bottom of motor cylinder enter channel 17 enter loading ability of bearing component 60 fluid entering channel 63 and
Bearing chamber 62 resupplies the second transverse bearing 43, and levitation gas enters inside the second transverse bearing 43, by the second transverse bearing
43 porous media throttling, the gap between the second transverse bearing 43 and main shaft 21, levitation gas is in the second transverse bearing
Air film is formed in gap between 43 and main shaft 21, floats main shaft 21, is then discharged from gap both ends.What is be discharged from left end is outstanding
Floating gas enters motor accommodating chamber 14, is discharged together with the cooling gas of cooling motor from shell 10 later.It is discharged from right end
Levitation gas enters each fluid outlet passage 64 of loading ability of bearing structure 60 by each first fluid channel on axle envelope component 70,
Motor accommodating chamber 14 is entered back into, is discharged together with the cooling gas for cooling down motor from shell 10.
Hydrostatic gas-lubricated bearing requires very high precision, and bearing clearance is generally at 10 μm or less.The axis of axle envelope component 70
The seal clearance of seal structure also preferably ensuring relatively rotate feelings subordinate it is the smaller the better, such as seal clearance can down to 0.02mm,
So small seal clearance is very high to the concentricity requirement of shaft seal structure and main shaft 21, and axle envelope component 70 passes through axle envelope positioning spigot
72 realizations and compressor associated components are conducive to guarantee its shaft seal structure and master such as the positioning of loading ability of bearing component 70 and shell 10
The concentricity of axis 21.
Shaft seal structure is set as comb structure, with main shaft 21 cooperate, can prevent the exhaust of compressor sencond stage impeller 23 into
Enter the bearing chamber 62 of loading ability of bearing component 60, is conducive to reduce compressor leakage loss, improves the efficiency of compressor, while being also conducive to
Prevent the back pressure of bearing chamber 62 from increasing because amount of leakage is too big.
The back pressure of bearing chamber 62 influences the gas film pressure distribution situation between the second transverse bearing 43 and main shaft 21, Jin Erying
Bearing rigidity and damping are rung, and bearing rigidity and damping influence rotor dynamics stability, on the other hand, bearing back-pressure surges
It will also result in bearing whirling motion, therefore, hydrostatic gas-lubricated bearing is in use, guarantees that back pressure is stablized and is conducive to guarantee that bearing rotor system is steady
It is qualitative.The first fluid channel of axle envelope component 70 and the fluid outlet passage 64 of loading ability of bearing structure 60 are prevented to be discharged from left end
Gas be trapped in axle envelope component 70 and loading ability of bearing component 60, therefore effectively prevent the bearing back pressure of the second transverse bearing 43
It is unstable.
The right side clearance fit of bearing the positioning end face 721 and the second transverse bearing 43 of axle envelope component 70, with snap ring 81
The axial position for limiting the second transverse bearing 43 together can prevent 43 or so play of the second transverse bearing from causing bearing unstability.
As it can be seen that the axle envelope component 70 of the embodiment of the present disclosure is conducive to guarantee and axle envelope while conducive to leakage loss is reduced
The operating back pressure of the adjacent transverse bearing of component 70 is stablized, to stablize conducive to the efficiency and bearing rotor system for improving compressor
Property.
Diffuser and bearing block are designed to a part by the loading ability of bearing component 60 of the embodiment of the present disclosure, while axis is arranged
Seal installation hole is integrated with the function of diffuser, bearing block and axle envelope mounting base, is conducive to reduce number of parts, improves assembly efficiency,
Compressor drum length can also be reduced simultaneously, improve the stability of bearing rotor system.
Since loading ability of bearing component 60 has fluid feed channel 63 and fluid outlet passage 64, it is conducive to guarantee that second is radial
Bearing 43 works normally and operating back pressure is stablized, and is conducive to improve bearing rotor system stability, while having both diffuser effect, subtracts
Lack number of parts, reduced the length of compressor drum, improves bearing rotor system stability.
Loading ability of bearing component 60 is using load bearing component positioning spigot 68 together with the cooperation shop bolt of diffuser location hole 69
Dual positioning is carried out, can guarantee loading ability of bearing with the right side and inner wall of load bearing component positioning spigot 68 and motor cylinder 11
The concentricity of component 60 and its bearing chamber 62 and main shaft 21, and then guarantee coaxial with main shaft 21 after the second transverse bearing 43 assembles
Degree is cooperated by pin and diffuser location hole 69, can be accurately positioned to the circumferential direction of loading ability of bearing component 60.Therefore, the axis
Assembly efficiency and precision can be improved by holding load bearing component 60.
Since the bearing clearance of hydrostatic gas-lubricated bearing is generally several microns to some tens of pm, the rotation of hydrostatic gas-lubricated bearing bearing
Tool of making a connection is high to the same bearing requirements of two transverse bearings, if concentricity is poor, bearing performance can be made to reduce, can led when serious
Cause rotor that can not float.Therefore the loading ability of bearing structure 60 of the embodiment of the present disclosure and parts of bearings engaged therewith 70 are suitable for
The compressor carried using hydrostatic gas-lubricated bearing.Certainly, although the axle envelope component 70 of the embodiment of the present disclosure is suitable for using gas
The compressor of bearing, such as centrifugal compressor, but the axle envelope that the embodiment of the present disclosure is used in other rotation systems is not precluded
Component 70.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the disclosure rather than its limitations；To the greatest extent
Pipe is described in detail the disclosure referring to preferred embodiment, it should be understood by those ordinary skilled in the art that: still
It can modify to the specific embodiment of the disclosure or some technical features can be equivalently replaced, should all cover
In the claimed technical proposal scope of the disclosure.
Claims (16)
1. a kind of axle envelope component (70) characterized by comprising
Axle envelope disk body (71), axle envelope disk body (71) center have axis hole, and the hole wall of the axis hole is equipped with shaft seal structure；
Axle envelope positioning spigot (72), axial one end that is coaxial and being integrally provided to the axle envelope disk body (71), the axle envelope are fixed
Position seam allowance (72) is equipped with the first fluid channel of the radially inner side and radial outside that are connected to the axle envelope positioning spigot (72).
2. axle envelope component (70) according to claim 1, which is characterized in that the shaft seal structure includes comb structure
(711)。
3. axle envelope component (70) according to claim 1, which is characterized in that the axle envelope positioning spigot (72) is far from described
There is the bearing for carrying out axially position to transverse bearing to position end face (721) for one end of axle envelope disk body (71).
4. axle envelope component (70) according to claim 1, which is characterized in that the first fluid channel includes:
At least one through-hole being set on the side wall of the axle envelope positioning spigot (72)；And/or
From one end far from the axle envelope disk body (71) of the axle envelope positioning spigot (72) to close to the axle envelope disk body (71)
The recessed groove (722) in one end.
5. axle envelope component (70) according to claim 1, which is characterized in that the axle envelope component (70) includes multiple described
First fluid channel, the multiple first fluid channel are uniformly arranged along the circumferential direction of the axle envelope positioning spigot (72).
6. axle envelope component (70) according to claim 5, which is characterized in that the multiple first fluid channel is along the axis
The circumferential of envelope positioning spigot (72) is uniformly arranged with the 360 °/angle interval of (n+1), wherein n is that the multiple first fluid leads to
The quantity in road.
7. axle envelope component (70) according to claim 1, which is characterized in that the axle envelope component (70) includes being set to institute
State the axle envelope connecting hole (712) and/or axle envelope location hole (713) on axle envelope disk body (71).
8. axle envelope component (70) according to claim 1, which is characterized in that the inner peripheral surface of the axle envelope positioning spigot (72)
Diameter be greater than the axis hole diameter.
9. a kind of compressor characterized by comprising
Compressor drum (20), including main shaft (21)；
Transverse bearing, for carrying the main shaft (21)；With
Axle envelope component (70), for according to the described in any item axle envelope components (70) of claim 1 to 8, the main shaft (21) is worn
In in the axis hole of the axle envelope component (70), the shaft seal structure and the main shaft (21) of the axle envelope component (70) are matched
It closes, the gap between the first fluid channel and the transverse bearing and the main shaft (21) of the axle envelope component (70) connects
It is logical.
10. compressor according to claim 9, which is characterized in that the compressor further includes loading ability of bearing component (60),
Loading ability of bearing component (60) includes:
Diffuser has axle envelope mounting hole (67), and axial one end of the diffuser is provided with diffusion structure, the axle envelope component
(70) it is set in the axle envelope mounting hole (67)；
Bearing block, is integrally formed at the axial other end of the diffuser, and the bearing block is equipped with and the axle envelope mounting hole
(67) coaxial and connection bearing chamber (62), the transverse bearing are set in the bearing chamber (62).
11. compressor according to claim 10, which is characterized in that the loading ability of bearing component (60) includes that fluid enters
Channel (63), the fluid entering channel (63) is connected to the bearing chamber (62) and the loading ability of bearing component (60) is external.
12. compressor according to claim 10, which is characterized in that the loading ability of bearing component (60) includes fluid outflow
Channel (64), the fluid outlet passage (64) are connected to the axle envelope mounting hole (67) and the loading ability of bearing component (60) outside
Portion, the first fluid channel are connected to the fluid outlet passage (64).
13. compressor according to claim 10, which is characterized in that the axle envelope positioning spigot (72) is far from the axle envelope
There is the bearing for carrying out axially position to transverse bearing to position end face (721) for one end of disk body (71).
14. compressor according to claim 10, which is characterized in that the axle envelope mounting hole (67) is stepped hole, including
The path section of major diameter section positioned at one end close to the diffusion structure and one end far from the diffusion structure, the major diameter section
Step positioning surface (65) are formed between the path section, the axle envelope disk body (71) is located in the major diameter section, the axle envelope
Positioning spigot (72) is located in the path section, the end face close to the axle envelope positioning spigot (72) of the axle envelope disk body (71)
(714) it is abutted with the step positioning surface (65).
15. compressor according to claim 10, which is characterized in that the transverse bearing is gas bearing.
16. a kind of coolant circulating system, which is characterized in that including compressor described in any one of claim 10 to 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822188596.9U CN209340202U (en) | 2018-12-25 | 2018-12-25 | Shaft seal part, compressor and refrigerant circulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822188596.9U CN209340202U (en) | 2018-12-25 | 2018-12-25 | Shaft seal part, compressor and refrigerant circulating system |
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| Publication Number | Publication Date |
|---|---|
| CN209340202U true CN209340202U (en) | 2019-09-03 |
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ID=67758942
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|---|---|---|---|
| CN201822188596.9U Active CN209340202U (en) | 2018-12-25 | 2018-12-25 | Shaft seal part, compressor and refrigerant circulating system |
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| Country | Link |
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| CN (1) | CN209340202U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020134518A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Bearing carrying component, compressor and refrigerant circulation system |
| WO2020134516A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Shaft seal component, compressor and refrigerant circulation system |
| CN113107895A (en) * | 2020-01-09 | 2021-07-13 | 珠海格力电器股份有限公司 | Compressors and Air Conditioners |
| CN113107869A (en) * | 2020-01-09 | 2021-07-13 | 珠海格力电器股份有限公司 | Compressor and air conditioning system |
| CN113757161A (en) * | 2020-06-04 | 2021-12-07 | 青岛海尔智能技术研发有限公司 | Air supply system and refrigerating system of air suspension compressor |
| CN113757162A (en) * | 2020-06-04 | 2021-12-07 | 青岛海尔智能技术研发有限公司 | Air suspension compressors and refrigeration equipment |
| CN113757160A (en) * | 2020-06-04 | 2021-12-07 | 青岛海尔智能技术研发有限公司 | Bearing seat for air suspension compressor, air suspension compressor and refrigeration equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134518A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Bearing carrying component, compressor and refrigerant circulation system |
| WO2020134516A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Shaft seal component, compressor and refrigerant circulation system |
| CN111365290A (en) * | 2018-12-25 | 2020-07-03 | 珠海格力电器股份有限公司 | Shaft seal components, compressors and refrigerant circulation systems |
| CN113107895A (en) * | 2020-01-09 | 2021-07-13 | 珠海格力电器股份有限公司 | Compressors and Air Conditioners |
| CN113107869A (en) * | 2020-01-09 | 2021-07-13 | 珠海格力电器股份有限公司 | Compressor and air conditioning system |
| CN113757161A (en) * | 2020-06-04 | 2021-12-07 | 青岛海尔智能技术研发有限公司 | Air supply system and refrigerating system of air suspension compressor |
| CN113757162A (en) * | 2020-06-04 | 2021-12-07 | 青岛海尔智能技术研发有限公司 | Air suspension compressors and refrigeration equipment |
| CN113757160A (en) * | 2020-06-04 | 2021-12-07 | 青岛海尔智能技术研发有限公司 | Bearing seat for air suspension compressor, air suspension compressor and refrigeration equipment |
| CN113757163A (en) * | 2020-06-04 | 2021-12-07 | 青岛海尔智能技术研发有限公司 | Air supply system and refrigerating system of air suspension compressor |
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