CN105275822B - Compressor air suction structure and processing method thereof and compressor - Google Patents
Compressor air suction structure and processing method thereof and compressor Download PDFInfo
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- CN105275822B CN105275822B CN201510706323.7A CN201510706323A CN105275822B CN 105275822 B CN105275822 B CN 105275822B CN 201510706323 A CN201510706323 A CN 201510706323A CN 105275822 B CN105275822 B CN 105275822B
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- 238000003672 processing method Methods 0.000 title claims abstract description 27
- 230000007704 transition Effects 0.000 claims abstract description 122
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- 210000002421 cell wall Anatomy 0.000 claims description 7
- 230000003313 weakening effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 230000003434 inspiratory effect Effects 0.000 description 5
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- 238000003754 machining Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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Abstract
The invention discloses a compressor air suction structure, a processing method thereof and a compressor, wherein the compressor air suction structure comprises: the air inlet channel is arranged on the air cylinder and extends along the radial direction of the air cylinder, and the suction channel is arranged on the inner wall of the air cylinder and penetrates through two end faces of the air cylinder; the air inlet channel and the suction channel are communicated through a transition channel, the axial section of the transition channel gradually expands from one end close to the air inlet channel to one end far away from the air inlet channel, and the axial section of the transition channel is parallel to the axial direction of the air cylinder. The invention discloses a compressor air suction structure, which adopts a transition channel to communicate an air inlet channel and an air suction channel, wherein gas flowing out of the air inlet channel flows to the air suction channel through the gradually expanded transition channel, and the gas has better buffer transition in the transition channel in the axial direction of a cylinder, thereby effectively weakening the vortex generated when the gas flows through the compressor air suction structure, reducing the air suction resistance of the compressor and increasing the power of the compressor.
Description
Technical field
The present invention relates to Compressor Technology field, more specifically to a kind of compressor air suction structure and its processing side
Method, compressor.
Background technology
At present, in rotary compressor, cylinder is provided with air suction structure and exhaust structure, and the air suction structure is to compressor
Performance and efficiency have a major impact.As depicted in figs. 1 and 2, the air suction structure of compressor includes：Located at cylinder 11 and along cylinder 11
The inlet channel 12 radially extended, the inwall located at cylinder 11 and two end faces axially through cylinder 11 along cylinder 11
Suction passage 13；Wherein, suction passage 13 connects with inlet channel 12 and the two connection realization extends radially through cylinder 11, sucks
Air inlet of the passage 13 on the inwall of cylinder 11 is two end faces that an axial direction along cylinder 11 forms insertion cylinder 11
Rectangular air inlet 131, the rectangular air inlet 131 sets close to the vane slot 14 of cylinder 11.
In above-mentioned air suction structure, suction passage 13 runs through two end faces of cylinder 11, then suction passage 13 has two suctions
Inbound port, two inhalation ports are respectively on two end faces of cylinder 11.Because the outlet of inlet channel 12 is in vertical direction
On be mutated along vertical plane to two inhalation ports, the then outlet of inlet channel 12 to inhalation port, cause gas to flow through the air-breathing
Stronger vortex during structure be present so that the inspiratory resistance of compressor is larger, and the power of compressor is smaller.
In summary, gas stream how is weakened through vortex caused by compressor air suction structure, to reduce the suction of compressor
Atmidometer, increase the power of compressor, be current those skilled in the art's urgent problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of compressor air suction structure, weakens gas stream through being produced during compressor air suction structure
Vortex, to reduce the inspiratory resistance of compressor, increase the power of compressor.It is a further object of the present invention to provide one kind to have
The compressor of above-mentioned compressor air suction structure and a kind of processing method of compressor air suction structure.
To achieve these goals, the present invention provides following technical scheme：
A kind of compressor air suction structure, including：Inlet channel and suction passage, the inlet channel located at the cylinder and
Along radially extending for the cylinder, inwall of the suction passage located at the cylinder and two end faces through the cylinder；
Wherein,
The inlet channel is connected with the suction passage by transition passage, and the axial cross section of the transition passage is from close
One end of the inlet channel is to one end flaring away from the inlet channel, and the axial cross section of the transition passage is parallel to institute
State the axial direction of cylinder.
Preferably, the axial cross section of the transition passage is straightway close to the boundary line of the end face of the cylinder.
Preferably, the suction passage in the inhalation port on the end face of the cylinder be arc port.
Preferably, the transition passage and the suction passage are by the first deep-slotted chip breaker, the second deep-slotted chip breaker and positioned at described
Side wall between first deep-slotted chip breaker and second deep-slotted chip breaker is formed, wherein, first deep-slotted chip breaker and second deep-slotted chip breaker
Connected with the inlet channel, first deep-slotted chip breaker connects and in institute with second deep-slotted chip breaker along the axial direction of the cylinder
The axle of two end faces of the cylinder, the axis of first deep-slotted chip breaker and second deep-slotted chip breaker is run through in the inwall side for stating cylinder
Axis of the line with the cylinder tilts.
Preferably, the transition passage and the suction passage are by the 3rd deep-slotted chip breaker, the 4th deep-slotted chip breaker and the 5th deep-slotted chip breaker
Formed, wherein, the outlet of the 3rd deep-slotted chip breaker, the 4th deep-slotted chip breaker and the inlet channel is respectively positioned on the 5th arc
On the cell wall of groove, the 5th deep-slotted chip breaker runs through two end faces of the cylinder, the 3rd arc in the inwall side of the cylinder
Shape groove and the 4th deep-slotted chip breaker are located at two end faces of the cylinder respectively, and the axis of the 3rd deep-slotted chip breaker and described the
Axis of the axis of four deep-slotted chip breakers with the cylinder tilts.
Preferably, the suction passage in the inhalation port on the end face of the cylinder be U-shaped mouth.
Preferably, the transition passage and the suction passage are formed by rectangular slot, two the 6th deep-slotted chip breakers, wherein,
The rectangular slot runs through two end faces of the cylinder in the inwall side of the cylinder, and the rectangular slot leads to the air inlet
Road is connected, and two the 6th deep-slotted chip breakers are respectively positioned on the cell wall of the rectangular slot and positioned at the bottom land of the rectangular slot
End, two the 6th deep-slotted chip breakers are located at two end faces of the cylinder, axis and the gas of the 6th deep-slotted chip breaker respectively
The axis of cylinder tilts.
Preferably, the axial cross section of the transition passage is arched.
Preferably, the suction passage is rectangle in the inhalation port on the end face of the cylinder.
Preferably, the side wall of vane slot of the suction passage away from the cylinder and the transition passage are away from described
The side wall of vane slot is all provided with fluted, and the groove connects with the inlet channel.
Compressor air suction structure provided by the invention, inlet channel and suction passage, the transition are connected using transition passage
The axial cross section of passage is in flaring shape, and one end from close to one end of the inlet channel to away from the inlet channel is gradually
Expand, the axial cross section is parallel to the axial direction of cylinder, then the inhalation port for exporting to suction passage of inlet channel is in axial cross section
Transition is planar realized, the outlet mutation of inlet channel is avoided to the inhalation port of suction passage, by inlet channel
The gas of outflow flow to suction passage by the transition passage of flaring, in the axial direction of cylinder gas in transition passage have compared with
Good buffering transition, so as to effectively reduce gas stream through vortex caused by compressor air suction structure, reduce compressor
Inspiratory resistance, increase the power of compressor.
Compressor air suction structure based on above-mentioned offer, present invention also offers a kind of compressor, the compressor includes：Gas
Cylinder, the air suction structure on the cylinder；Wherein, the air suction structure is the compressor air suction knot described in above-mentioned any one
Structure.
Compressor air suction structure based on above-mentioned offer, present invention also offers a kind of processing side of compressor air suction structure
Method, the processing method of the compressor air suction structure include step：
1) processed on the cylinder along the hole radially extended of the cylinder；
2) transition passage and the suction passage, the transition passage and the Kong Lian are processed on the cylinder
It is logical, and the hole position forms the inlet channel in hole section of the transition passage away from described suction passage one end.
Preferably, process the transition passage in the step 2) and the suction passage specifically includes step：
21) first connected with the hole is processed in the first end face of the cylinder and inwall using the first circular knives
Groove, the axis of the axis of the first circular knives and the cylinder tilts described in process；
22) the second deep-slotted chip breaker is processed in the second end face of the cylinder and inwall using the second circular knives, it is processed
The axis of the axis of second circular knives described in journey and the cylinder tilts and is the first arc by first groove processing
Groove, second deep-slotted chip breaker connect with the hole and first deep-slotted chip breaker.
Preferably, process the transition passage in the step 2) and the suction passage specifically includes step：
21) second connected with the hole is processed in the first end face of the cylinder and inwall using the first circular knives
Groove, the axis of the axis of the first circular knives and the cylinder tilts described in process；
22) the 3rd connected with the hole is processed in the second end face of the cylinder and inwall using the second circular knives
Groove, the axis of the axis of the second circular knives and the cylinder tilts described in process；
23) using the 3rd circular knives in the processing of the inwall side of the cylinder through the first end face of the cylinder and described
5th deep-slotted chip breaker of second end face, by second groove processing it is the 3rd deep-slotted chip breaker and by the 3rd groove processing in process
For the 4th deep-slotted chip breaker, the 5th deep-slotted chip breaker connects with the hole, and the 5th deep-slotted chip breaker connect the 3rd deep-slotted chip breaker and
4th deep-slotted chip breaker.
Preferably, in process, the working ends of first circular knives to its non-operative end to the cylinder
The side of second end face of the end face away from the cylinder tilts, and the working end of first circular knives is to its non-operative end
Tilted to the axis of the cylinder；Second end face of the working end of second circular knives to its non-operative end to the cylinder
The side of first end face away from the cylinder tilts, and the working end of second circular knives is to its non-operative end to described
The axis of cylinder tilts.
Preferably, the angle of the axis of first circular knives and the axis of the cylinder is 30-60 °, described second
The angle of the axis of circular knives and the axis of the cylinder is 30-60 °.
Preferably, process the transition passage in the step 2) and the suction passage is specially：Using disk cutter
In the inwall side of the cylinder, processing is through the groove of two end faces of the cylinder, the axle of disk cutter described in process
Perpendicular to the axis of the cylinder, the groove connects line with the hole.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the structural representation for the compressor air suction structure that prior art provides；
Fig. 2 is the top view for the compressor air suction structure that prior art provides；
Fig. 3 is the cavity three-dimensional model diagram for the compressor air suction structure that prior art provides；
Fig. 4 is the first structural representation of compressor air suction structure provided in an embodiment of the present invention；
Fig. 5 is the part-structure schematic diagram of compressor air suction structure in Fig. 4；
Fig. 6 is the top view of compressor air suction structure in Fig. 4；
Fig. 7 is Fig. 6 A-A to sectional view；
Fig. 8 is the cavity three-dimensional model diagram of compressor air suction structure in Fig. 4；
Fig. 9 is second of structural representation of compressor air suction structure provided in an embodiment of the present invention；
Figure 10 is the structural representation of the other direction of compressor air suction structure in Fig. 9；
Figure 11 is the sectional view of compressor air suction structure in Fig. 9；
Figure 12 is the front view of compressor air suction structure in Figure 11；
Figure 13 is the third structural representation of compressor air suction structure provided in an embodiment of the present invention；
Figure 14 is the sectional view of compressor air suction structure in Figure 13；
Figure 15 is the 4th kind of structural representation of compressor air suction structure provided in an embodiment of the present invention；
Figure 16 is the sectional view of compressor air suction structure in Figure 15；
Figure 17 is the front view of compressor air suction structure in Figure 16；
Figure 18 is the top view of compressor air suction structure in Figure 15；
Figure 19 is the 5th kind of structural representation of compressor air suction structure provided in an embodiment of the present invention；
Figure 20 is the sectional view of compressor air suction structure in Figure 19；
Figure 21 is the first machining sketch chart of the processing method of compressor air suction structure provided in an embodiment of the present invention；
Figure 22 is second of machining sketch chart of the processing method of compressor air suction structure provided in an embodiment of the present invention；
Figure 23 is the third machining sketch chart of the processing method of compressor air suction structure provided in an embodiment of the present invention.
In figure 1 above -23：
11 it is cylinder, 12 be inlet channel, 13 be suction passage, 131 be rectangular air inlet, 14 be vane slot, 21 is gas
Cylinder, 22 be suction passage, 2201 be inhalation port, 23 be vane slot, 24 be inlet channel, 25 be transition passage, 26 be first
Deep-slotted chip breaker, 27 be the second deep-slotted chip breaker, 28 be the 3rd deep-slotted chip breaker, 29 be the 4th deep-slotted chip breaker, 210 be the 5th deep-slotted chip breaker, 211 be the 6th
Deep-slotted chip breaker, 212 be groove, 213 be hole, 214 be the first groove, 215 be the first circular knives, 216 be the second circular knives, 217
It is the 3rd groove for the second groove, 218,219 be the 3rd circular knives, 220 be groove, 221 is disk cutter.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Compressor air suction structure provided in an embodiment of the present invention, including：Inlet channel 24 and suction passage 22, inlet channel
24 are located at cylinder 21 and radially extending along cylinder 21, and suction passage 22 is located at the inwall of cylinder 21 and through two of cylinder 21
End face.Wherein, inlet channel 24 is connected with the suction passage 22 by transition passage 25, and the axial cross section of transition passage 25 leans on certainly
One end of nearly inlet channel 24 is to one end flaring away from inlet channel 24, and the axial cross section of the transition passage 25 is parallel to cylinder
21 axial direction.
It is understood that suction passage 22 is located at the inwall of cylinder 21, then show the interior of suction passage 22 and cylinder 21
Chamber connects；Again because suction passage 22 runs through two end faces of cylinder 21, then the suction passage 22 has：Two are located at cylinder 21
The inhalation port 2201 of end face, an air inlet for being located at the inwall of cylinder 21, a suction inlet connected with transition passage 25.Enter
Gas passage 24 is connected with suction passage 22 by transition passage 25, then shows that transition passage 25 is extended to by the outlet of inlet channel 24
The inhalation port 2201 of the suction passage 22.
Compressor air suction structure provided in an embodiment of the present invention, inlet channel 24 is connected using transition passage 25 and suction is logical
Road 22, the axial cross section of the transition passage 25 is in flaring shape, and from one end of close inlet channel 24 to away from inlet channel 24
One end flaring, the suction that exports to suction passage 22 of the axial cross section parallel to the axial direction, then inlet channel 24 of cylinder 21
Port 2201 planar realizes transition in axial cross section, and the outlet for avoiding inlet channel 24 is mutated to suction passage 22
Inhalation port 2201, suction passage 22 is flow to by the transition passage 25 of flaring by the gas that inlet channel 24 flows out, such as Fig. 8
Shown, gas has preferably buffering transition in transition passage 25 in the axial direction of cylinder 21, so as to effectively reduce gas
Flow through and be vortexed caused by compressor air suction structure, reduce the inspiratory resistance of compressor, increase the power of compressor.
The compressor air suction structure that above-described embodiment provides, through finite element analysis, gas flows through the compressor air suction structure
When, reduce gas and be vortexed and along perpendicular to vortex flow caused by the axially direction of cylinder 21 along cylinder 21 is axially caused.
Above-mentioned compressor air suction structure, realize the axial cross section of transition passage 25 from close to one end of inlet channel 24 to remote
From one end flaring of inlet channel 24, various structures be present.By taking the shape of the axial cross section as an example, the axial cross section has four
Boundary line, respectively a boundary line being connected with suction passage 22, a boundary line being connected with inlet channel 24, two are leaned on
The border limit of the nearly end face of cylinder 21.The axial cross section close to the boundary line of the end face of cylinder 21 can be straightway, curved section or
Some irregular line segments.In order to facilitate producing and manufacturing, the prioritizing selection axial cross section is close to the border of the end face of cylinder 21
Line is straightway, as shown in Fig. 7, Figure 11, Figure 12, Figure 14,16 and Figure 17.It is understood that the straightway is cut by curved surface
Gained.It should be noted that the sectional view in Figure 11, Figure 14 and Figure 16 is along the axial direction of transition passage 25 and crosses transition passage
The sectional view that 25 axis is done.
When transition passage 25 axial cross section close to the boundary line of the end face of cylinder 21 be straightway when, suction passage 22 in
Inhalation port 2201 on the end face of cylinder 21 can be curved, U-shaped or other have the shape of segmental arc.Add for convenience
Work, the inhalation port 2201 of prioritizing selection suction passage 22 is arc port, as shown in Fig. 4-6, Fig. 9 and Figure 10, Figure 13；Or inhale
The inhalation port 2201 for entering passage 22 is U-shaped mouth, as shown in Figure 15 and Figure 18.
When the inhalation port 2201 of suction passage 22 is arc port, it is desirable at least at the top of the inwall of transition passage 25 and bottom
Portion is curved surface, further, it is desirable to is cambered surface at least at the top and bottom of the inwall of transition passage 25.For transition passage 25
Inwall other parts, can be plane, or curved surface.In order to facilitate processing, prioritizing selection transition passage 25 and suction passage
22 by the first deep-slotted chip breaker 26, the second deep-slotted chip breaker 27 and the side wall shape between the first deep-slotted chip breaker 26 and the second deep-slotted chip breaker 27
Into, wherein, the first deep-slotted chip breaker 26 and the second deep-slotted chip breaker 27 connect with inlet channel 24, the first deep-slotted chip breaker 26 and the second deep-slotted chip breaker
27 connect along the axial direction of cylinder 21 and run through two end faces of cylinder 21, the axis of the first deep-slotted chip breaker 26 in the inwall side of cylinder 21
Tilted with the axis of the axis of the second deep-slotted chip breaker 27 with cylinder 21, as shown in figs9-12.
It is understood that the first deep-slotted chip breaker 26 and the second deep-slotted chip breaker 27 connects along the axial direction of cylinder 21, then both along gas
The axial direction of cylinder 21 is sequentially distributed；First deep-slotted chip breaker 26 and the second deep-slotted chip breaker 27 run through two of cylinder 21 in the inwall side of cylinder 21
End face, then show that the inner chamber of the first deep-slotted chip breaker 26 and the second deep-slotted chip breaker 27 with cylinder 21 connects, to ensure suction passage 22
Air inlet connects with the inner chamber of cylinder 21.Transition passage 25 and suction passage 22 by the first deep-slotted chip breaker 26, the second deep-slotted chip breaker 27 with
And the side wall between the first deep-slotted chip breaker 26 and the second deep-slotted chip breaker 27 is formed, it is to be understood that the first deep-slotted chip breaker 26, second
In the passage that deep-slotted chip breaker 27 and the side wall between the first deep-slotted chip breaker 26 and the second deep-slotted chip breaker 27 are formed, not through cylinder 21
The channel parts of two end faces be transition passage 25, the channel part through two end faces of cylinder 21 is suction passage 22.
Preferably, in above-mentioned compressor air suction structure, the first deep-slotted chip breaker 26 and the second deep-slotted chip breaker 27 are on transition passage 25
Axisymmetrical, as is illustrated by figs. 11 and 12.
In order to improve the transition effect of transition passage 25, the axis of the first deep-slotted chip breaker of prioritizing selection 26 and the axis of cylinder 21
Angle be 30-60 °, the angle of the axis of the second deep-slotted chip breaker 27 and the axis of cylinder 21 is 30-60 °.Certainly, it also may be selected the
The angle of the axis of one deep-slotted chip breaker 26 and the angle of the axis of cylinder 21, the axis and the axis of cylinder 21 of the second deep-slotted chip breaker 27 is
Other values, such as 20 °, 70 ° etc., it is not limited to above-mentioned number range.
Above-mentioned compressor air suction structure, transition passage 25 and suction passage 22 also may be selected by the 3rd deep-slotted chip breaker the 28, the 4th
The deep-slotted chip breaker 210 of deep-slotted chip breaker 29 and the 5th is formed, wherein, the outlet of the 3rd deep-slotted chip breaker 28, the 4th deep-slotted chip breaker 29 and inlet channel 24
It is respectively positioned on the cell wall of the 5th deep-slotted chip breaker 210, the 5th deep-slotted chip breaker 210 is in the inwall side of cylinder 21 through two ends of cylinder 21
Face, the 3rd deep-slotted chip breaker 28 and the 4th deep-slotted chip breaker 29 respectively be located at cylinder 21 two end faces, and the axis of the 3rd deep-slotted chip breaker 28 and
Axis of the axis of 4th deep-slotted chip breaker 29 with cylinder 21 tilts, as shown in Figure 13 and Figure 14.
It is understood that the outlet of the 3rd deep-slotted chip breaker 28, the 4th deep-slotted chip breaker 29 and inlet channel 24 is respectively positioned on the 5th arc
On the cell wall of shape groove 210, then show the outlet of the 3rd deep-slotted chip breaker 28, the 4th deep-slotted chip breaker 29 and inlet channel 24 respectively with the 5th arc
Shape groove 210 connects.5th deep-slotted chip breaker 210 runs through two end faces of cylinder 21 in the inwall side of cylinder 21, then shows the 5th arc
Groove 210 connects with the inner chamber of cylinder 21, to ensure that the outlet of suction passage 22 and the inner chamber of cylinder 21 connect.3rd deep-slotted chip breaker 28
It is located at two end faces of cylinder 21 respectively with the 4th deep-slotted chip breaker 29, then shows the 3rd deep-slotted chip breaker 28 through an end of cylinder 21
Face, the 4th deep-slotted chip breaker 29 run through another end face of cylinder 21.Transition passage 25 and suction passage 22 are by the 3rd deep-slotted chip breaker 28,
Four deep-slotted chip breakers 29 and the 5th deep-slotted chip breaker 210 are formed, it is to be understood that the 3rd deep-slotted chip breaker 28, the 4th deep-slotted chip breaker 29 and the 5th arc
In the passage that shape groove 210 is formed, the channel part through two end faces of cylinder 21 is not transition passage 25, through cylinder 21
The channel part of two end faces is suction passage 22.
In order to further facilitate processing, the deep-slotted chip breaker 210 of prioritizing selection the 5th is along axially penetrate through cylinder 21 the two of cylinder 21
Individual end face, i.e., the diameter parallel of the 5th deep-slotted chip breaker 210 is in the axis of cylinder 21.Certainly, the axle of the 5th deep-slotted chip breaker 210 also may be selected
The axis of line and cylinder 21 tilts, and the angle of inclination is not easy excessive.
Preferably, in above-mentioned compressor air suction structure, the 3rd deep-slotted chip breaker 28 and the 4th deep-slotted chip breaker 29 are on transition passage 25
Axisymmetrical, as shown in Figure 13 and Figure 14.
In order to improve the transition effect of transition passage 25, the axis of the deep-slotted chip breaker 28 of prioritizing selection the 3rd and the axis of cylinder 21
Angle be 30-60 °, the angle of the axis of the 4th deep-slotted chip breaker 29 and the axis of cylinder 21 is 30-60 °.Certainly, it also may be selected the
The angle of the axis of three deep-slotted chip breakers 28 and the angle of the axis of cylinder 21, the axis and the axis of cylinder 21 of the 4th deep-slotted chip breaker 29 is
Other values, such as 20 °, 70 ° etc., it is not limited to above-mentioned number range.
When the inhalation port 2201 of suction passage 22 is U-shaped mouth, it is desirable at least at the top of the inwall of transition passage 25 and bottom
Portion is curved surface, further, it is desirable to is cambered surface at least at the top and bottom of the inwall of transition passage 25.Simultaneously, it is desirable to suck
The sidewall sections of passage 22 are plane, and the structure of groove 212 can be set in the plane.For the inwall other parts of transition passage 25,
Can be plane, or curved surface.In order to facilitate processing, prioritizing selection transition passage 25 and suction passage 22 are by rectangular slot, two
Individual 6th deep-slotted chip breaker 211 is formed, wherein, rectangular slot runs through two end faces of cylinder 21, rectangle in the inwall side of cylinder 21
Groove is connected with inlet channel 24, and two the 6th deep-slotted chip breakers 211 are respectively positioned on the cell wall of rectangular slot and positioned at the groove of rectangular slot
Bottom, two the 6th deep-slotted chip breakers 211 are located at two end faces of cylinder 21, axis and the cylinder 21 of the 6th deep-slotted chip breaker 211 respectively
Axis tilts, as shown in figures 15-18.
It is understood that rectangular slot runs through two end faces of cylinder 21 in the inwall side of cylinder 21, then show rectangular
Shape groove connects with the inner chamber of cylinder 21, to ensure that the outlet of suction passage 22 and the inner chamber of cylinder 21 connect.Rectangular bottom land
End refers to one end of axis of the rectangular slot away from cylinder 21.Two the 6th deep-slotted chip breakers 211 are respectively positioned at two ends of cylinder 21
Face, then show that two the 6th deep-slotted chip breakers 211 extend through two end faces of cylinder 21.Transition passage 25 and suction passage 22 are by growing
Square groove, two the 6th deep-slotted chip breakers 211 are formed, it is to be understood that are formed by rectangular slot, two the 6th deep-slotted chip breakers 211
In passage, the channel part through two end faces of cylinder 21 is not transition passage 25, through the logical of two end faces of cylinder 21
Road part is suction passage 22.
In above-mentioned compressor air suction structure, rectangular slot refers to rectangular notch and groove bottom wall is rectangle.
Preferably, in above-mentioned compressor air suction structure, axis pair of two the 6th deep-slotted chip breakers 211 on transition passage 25
Claim, as shown in Figure 16 and Figure 17.
In order to improve the transition effect of transition passage 25, the axis of the deep-slotted chip breaker 211 of prioritizing selection the 6th and the axle of cylinder 21
The angle of line is 30-60 °.Certainly, the angle that the axis and the axis of cylinder 21 of the 6th deep-slotted chip breaker 211 also may be selected is other
Value, such as 20 °, 70 ° etc., it is not limited to above-mentioned number range.
Above-mentioned compressor air suction structure, produce and manufacture for convenience, the axial cross section also may be selected close to cylinder 21
The boundary line of end face can be curved section, and further, the curved section is segmental arc.Specifically, the axial cross section of transition passage 25
It is arched, as illustrated in figures 19 and 20.The axial cross section can be half circular segment, minor arc arch.It is excellent in order to further facilitate production
The axial cross section for first selecting transition passage 25 is in minor arc arch.For the radian of minor arc arch, can be set according to being actually needed
Meter, the embodiment of the present invention are not limited this.
When the axial cross section of transition passage 25 is arched, suction passage 22 is in the inhalation port on the end face of cylinder 21
2201 can be rectangle, be trapezoidal etc., produce for convenience, prioritizing selection suction passage 22 is in the suction side on the end face of cylinder 21
Mouth 2201 is rectangle, as shown in figure 19.
In order to close air suction structure in advance, so as to improve compressor efficiency, prioritizing selection suction passage 22 is away from cylinder 21
The side wall of side wall and transition passage 25 away from vane slot 23 of vane slot 23 be all provided with fluted 212, the groove 212 and air inlet
Passage 24 connects, as shown in figures 15-18.So, the inhalation port 2201 of suction passage 22 is realized to the vane slot of cylinder 21
23 is close, realizes closing suction passage 22 in advance, that is, realizes and close the compressor air suction structure in advance.Need what is illustrated
It is that groove 212 can be also set in the compressor air suction structure as shown in Fig. 4-14, Figure 19 and Figure 20, simply work as suction passage
When 22 inhalation port 2201 is U-shaped mouth (as shown in figures 15-18), it is easy to implement and closes the compressor air suction structure in advance.
In above-mentioned compressor air suction structure, it can be designed for the shapes and sizes of groove 212 according to being actually needed, this
Inventive embodiments are not limited this.
The compressor air suction structure provided based on above-described embodiment, the embodiment of the present invention additionally provide a kind of compressor, should
Compressor, including：Cylinder 21, located at the air suction structure of the cylinder 21；Wherein, the air suction structure is described in above-described embodiment
Compressor air suction structure.
Because the compressor air suction structure that above-described embodiment provides has above-mentioned technique effect, above-mentioned compressor has above-mentioned
Compressor air suction structure, then compressor provided in an embodiment of the present invention also there is corresponding technique effect, repeat no more herein.
The compressor air suction structure provided based on above-described embodiment, the embodiment of the present invention additionally provide a kind of compressor air suction
The processing method of structure, as shown in Figure 21 and Figure 23, the processing method of the compressor air suction structure, specifically include step：
S01：Processed on cylinder 21 along the hole 213 radially extended of cylinder 21：
The hole 213 can be blind hole, or through hole, be selected according to being actually needed.In order to reduce workload, life is improved
Efficiency is produced, the prioritizing selection hole 213 is blind hole.The hole 213 can be rounded, square etc. shape.For the ease of air inlet, prioritizing selection
The hole 213 is circle.In order to facilitate processing, the hole 213 is stepped hole.Certainly, the hole 213 also may be selected is isometrical hole.Enter one
Step ground, the hole 213 is step cutting pattern hole, and one end diameter of the axis of the step cutting pattern hole away from cylinder 21 is more than step cutting pattern
One end diameter of the hole close to the axis of cylinder 21.
S02：Transition passage 25 is processed on cylinder 21 and suction passage 22, transition passage 25 connect with the hole 213, and should
Hole 213 is located at hole section of the transition passage 25 away from the one end of suction passage 22 and forms inlet channel 24.
When the hole 213 is blind hole, transition passage 25 turns on the blind hole, i.e., when processing transition passage 25, by the blind hole
It is processed as through hole.When needing to close the compressor air suction structure in advance, it can suitably increase the length of blind hole so that the hole 213
Groove 212 mentioned hereinabove is formed positioned at hole section of the transition passage 25 close to the one end of suction passage 22, so, simplifies life
Production, improves production efficiency.
It should be noted that the hole 213 is located at the formation air inlet of 213 sections of hole of the transition passage 25 away from the one end of suction passage 22
Passage 24, show that the hole 213 can be only located at the one end of transition passage 25 away from suction passage 22, or the hole 213 includes：It is located at
Hole section of the transition passage 25 away from the one end of suction passage 22, the hole section positioned at transition passage 25 close to the one end of suction passage 22.
The processing method of compressor air suction structure provided in an embodiment of the present invention, it is used to form inlet channel by first processing
24 hole 213, reprocess transition passage 25 and suction passage 22, effectively facilitate transition passage 25 and suction passage 22 plus
Work, also allow for ensureing crudy.
In the processing method of above-mentioned compressor air suction structure, process transition passage 25 and suction passage 22 has a variety of sides
Formula.Preferably, as shown in figure 21, process transition passage 25 in above-mentioned steps S02 and suction passage 22 specifically includes step：
S021：Connected with hole 213 is processed in the first end face of cylinder 21 and inwall using the first circular knives 215
One groove 214, the axis of the axis and cylinder 21 of the first circular knives 215 tilts in process：
It is understood that the axis of the axis and cylinder 21 of the first circular knives 215 tilts, it is to ensure to realize
The axial cross section of transition passage 25 is in flaring shape.For the size of the first circular knives 215, can according to the size in hole 213 and
Length is designed, and the embodiment of the present invention is not limited this.When hole 213 is blind hole, the first circular knives 215 are in processing the
The blind hole is processed during one groove 214, the blind hole is processed as through hole.
S022：The second deep-slotted chip breaker 27 is processed in the second end face of cylinder 21 and inwall using the second circular knives 216, is added
The axis of the axis and cylinder 21 of the second circular knives 216 is tilted during work, and the first groove 214 is processed as into the first arc
Groove 26, the second deep-slotted chip breaker 27 connect with the deep-slotted chip breaker 26 of hole 213 and first：
Specifically, during the second deep-slotted chip breaker 27 is processed, the second circular knives 216 can process the first groove 214, by
One groove 214 is processed as the first deep-slotted chip breaker 26, the first deep-slotted chip breaker 26, the second deep-slotted chip breaker 27 and positioned at the first deep-slotted chip breaker 26 and second
Side wall between deep-slotted chip breaker 27 forms transition passage 25 and suction passage 22, and it is logical away from suction that the hole 213 is located at transition passage 25
The hole section of the one end of road 22 forms inlet channel 24.
It is understood that the axis of the axis and cylinder 21 of the second circular knives 216 tilts, it is to ensure to realize
The axial cross section of transition passage 25 is in flaring shape.For the size of the second circular knives 216, can according to the size in hole 213 and
Length is designed, and the embodiment of the present invention is not limited this.When hole 213 is blind hole, added by the second circular knives 216
The hole 213 is processed further during the second groove of work 217.
The processing method of above-mentioned compressor air suction structure, pass through the first circular knives 215 and the second circular knives 216
Transition passage 25 and suction passage 22 are processed, relatively simple, processing efficiency is higher.In addition, above-mentioned compressor air suction structure
The compressor air suction structure that processing method processes is structure as shown in figs9-12.
Certainly, also transition passage 25 and suction passage 22 can be processed using other method.Specifically, as shown in figure 22,
In the processing method of above-mentioned compressor air suction structure, the transition passage 25 and the suction passage 22 are processed in step S02 and is had
Body includes step：
S021’：Process what is connected with hole 213 in the first end face of cylinder 21 and inwall using the first circular knives 215
Second groove 217, the axis of the axis and cylinder 21 of the first circular knives 215 tilts in process：
It is understood that the axis of the axis and cylinder 21 of the first circular knives 215 tilts, it is to ensure to realize
The axial cross section of transition passage 25 is in flaring shape.For the size of the first circular knives 215, can according to the size in hole 213 and
Length is designed, and the embodiment of the present invention is not limited this.When hole 213 is blind hole, added by the first circular knives 215
The blind hole is processed during the second groove of work 217, the blind hole is processed as through hole.
S022’：Process what is connected with hole 213 in the second end face of cylinder 21 and inwall using the second circular knives 216
3rd groove 218, the axis of the axis and cylinder 21 of the second circular knives 216 tilts in process：
It is understood that the axis of the axis and cylinder 21 of the second circular knives 216 tilts, it is to ensure to realize
The axial cross section of the part of transition passage 25 is in flaring shape., can be according to the size in hole 213 for the size of the second circular knives 216
And length is designed, the embodiment of the present invention is not limited this.When hole 213 is blind hole, pass through the second circular knives 216
The hole 213 is processed further during the 3rd groove 218 is processed.
S023’：Using the 3rd circular knives 219 in the processing of the inwall side of cylinder 21 through the first end face of cylinder 21 and the
5th deep-slotted chip breaker 210 of biend, the second groove 217 is processed as the 3rd deep-slotted chip breaker 28 in process and by the 3rd groove 218 plus
Work is the 4th deep-slotted chip breaker 29, and the 5th deep-slotted chip breaker 210 connects with hole 213, and the 5th deep-slotted chip breaker 210 connects the 3rd deep-slotted chip breaker 28 and the
Four deep-slotted chip breakers 29：
Specifically, during the 5th deep-slotted chip breaker 210 is processed, the 3rd circular knives 219 can add the 3rd circular knives 219
Work the second groove 217 and the 3rd groove 218, the second groove 217 is processed as the 3rd deep-slotted chip breaker 28, the 3rd groove 218 is processed as the 4th arc
Shape groove 29, the 3rd deep-slotted chip breaker 28, the 4th deep-slotted chip breaker 29 and the 5th deep-slotted chip breaker 210 form transition passage 25 and suction passage 22, should
Hole 213 is located at 213 sections of hole of the transition passage 25 away from the one end of suction passage 22 formation inlet channel 24.
Specifically, the 3rd circular knives 219 pass through the second groove 217 and the 3rd groove 218 in process.Add for convenience
Work, the diameter parallel of the circular knives 219 of prioritizing selection the 3rd is in the axis of cylinder 21.For the size of the 3rd circular knives 219,
It can be designed according to being actually needed, the embodiment of the present invention is not limited this.
The processing method of above-mentioned compressor air suction structure, pass through the first circular knives 215, the second circular knives 216 and
Three circular knives 219 process transition passage 25 and suction passage 22 so that axle of the side wall of suction passage 22 close to cylinder 21
The part of line is smooth flat, has repaired suction passage 22, has reduced inspiratory resistance.In addition, above-mentioned compressor air suction structure
The compressor air suction structure that processing method processes is structure as shown in Figure 13 and Figure 14.
Preferably, in the processing method of above-mentioned compressor air suction structure, the first circular knives 215 and the second circular knives
216 processing diameter is equal.So, the first circular knives 215 and the second circular knives 216 can be same cutter, Neng Gouyou
Effect reduces cutter number, so as to reduce processing cost；Meanwhile, it is capable to realize the first deep-slotted chip breaker 26 and the second deep-slotted chip breaker processed
27 shapes and sizes are identical, and the 3rd deep-slotted chip breaker 28 is identical with the shapes and sizes of the 4th deep-slotted chip breaker 29.
, can be according to reality for the first circular knives 215 and the incline direction of the second circular knives 216 in process
Need to be designed, as long as the axial cross section for the transition passage 25 that can ensure to process is in flaring shape, and flaring direction meets
It is required that.In order to facilitate processing, in prioritizing selection process, the working end of the first circular knives 215 to its non-operative end
Tilted to the side of second end face of the first end face of cylinder 21 away from cylinder 21, and the working end of the first circular knives 215 is extremely
Its non-operative end tilts to the axis of cylinder 21；The working end of second circular knives 216 to its non-operative end to cylinder 21
The side of first end face of the biend away from cylinder 21 tilts, and the working end of the second circular knives 216 to its non-operative end to
The axis of cylinder 21 tilts, as shown in figure 21.
For the angle of the axis of the first circular knives 215 and the second circular knives 216 and the axis of cylinder 21, it is necessary to root
It is designed according to being actually needed, for example, 20-70 °.Make to further facilitate processing and improve the transition of transition passage 25
With the angle of the axis of the first circular knives of prioritizing selection 215 and the axis of cylinder 21 is 30-60 °, the second circular knives 216
The angle of axis of axis and cylinder 21 be 30-60 °.
To simplify the processing method of above-mentioned compressor air suction structure, the transition is processed in prioritizing selection above-mentioned steps S02
Passage 25 and the suction passage 22 are specially：Using disk cutter 221 in the processing of the inwall side of cylinder 21 through cylinder 21
The groove 220 of two end faces, the axis of disk cutter 221 is perpendicular to the axis of cylinder 21, groove 220 and hole in process
213 connections, as shown in figure 23.
It is understood that groove 220 forms transition passage 25 and suction passage 22, the hole 213 are located at transition passage 25
213 sections of hole formation inlet channel 24 away from the one end of suction passage 22.
The processing method of compressor air suction structure provided in an embodiment of the present invention, can be processed only with disk cutter 221
Go out transition passage 25 and suction passage 22, farthest reduce cutter number, reduce processing cost.
The compressor air suction structure that the processing method of above-mentioned compressor air suction structure processes is as illustrated in figures 19 and 20
Structure.
The foregoing description of the disclosed embodiments, those skilled in the art are enable to realize or using the present invention.To this
A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and generic principles defined herein can
Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited
The embodiments shown herein is formed on, and is to fit to consistent with principles disclosed herein and features of novelty most wide
Scope.
Claims (16)
1. a kind of compressor air suction structure, including：Inlet channel (24) and suction passage (22), the inlet channel (24) are located at
The cylinder (21) and radially extending along the cylinder (21), the suction passage (22) are located at the inwall of the cylinder (21)
And through two end faces of the cylinder (21)；Characterized in that,
The inlet channel (24) is connected with the suction passage (22) by transition passage (25), the axle of the transition passage (25)
One end flaring to section from close to one end of the inlet channel (24) to away from the inlet channel (24), the transition are led to
The axial cross section in road (25) is parallel to the axial direction of the cylinder (21), and the transition passage (25) is by the inlet channel (24)
Outlet extends to the inhalation port (2201) of the suction passage (22), and the inhalation port (2201) is located at the cylinder (21)
End face；
The side wall and the transition passage (25) of vane slot (23) of the suction passage (22) away from the cylinder (21) are remote
Side wall from the vane slot (23) is all provided with fluted (212), and the groove (212) connects with the inlet channel (24).
2. compressor air suction structure according to claim 1, it is characterised in that the axial cross section of the transition passage (25)
Boundary line close to the end face of the cylinder (21) is straightway.
3. compressor air suction structure according to claim 2, it is characterised in that the suction passage (22) is in the cylinder
(21) inhalation port (2201) on end face is arc port.
4. compressor air suction structure according to claim 3, it is characterised in that the transition passage (25) and the suction
Passage (22) is by the first deep-slotted chip breaker (26), the second deep-slotted chip breaker (27) and positioned at first deep-slotted chip breaker (26) and second arc
Side wall between shape groove (27) is formed, wherein, first deep-slotted chip breaker (26) and second deep-slotted chip breaker (27) with it is described enter
Gas passage (24) connects, and first deep-slotted chip breaker (26) connects with second deep-slotted chip breaker (27) along the axial direction of the cylinder (21)
And in the inwall side of the cylinder (21) run through the cylinder (21) two end faces, the axis of first deep-slotted chip breaker (26) and
Axis of the axis of second deep-slotted chip breaker (27) with the cylinder (21) tilts.
5. compressor air suction structure according to claim 3, it is characterised in that the transition passage (25) and the suction
Passage (22) is formed by the 3rd deep-slotted chip breaker (28), the 4th deep-slotted chip breaker (29) and the 5th deep-slotted chip breaker (210), wherein, the 3rd arc
The outlet of shape groove (28), the 4th deep-slotted chip breaker (29) and the inlet channel (24) is respectively positioned on the 5th deep-slotted chip breaker (210)
Cell wall on, the 5th deep-slotted chip breaker (210) in the inwall side of the cylinder (21) run through the cylinder (21) two end faces,
3rd deep-slotted chip breaker (28) and the 4th deep-slotted chip breaker (29) are located at two end faces of the cylinder (21) respectively, and described the
The axis of the axis of three deep-slotted chip breakers (28) and the axis of the 4th deep-slotted chip breaker (29) with the cylinder (21) tilts.
6. compressor air suction structure according to claim 2, it is characterised in that the suction passage (22) is in the cylinder
(21) inhalation port (2201) on end face is U-shaped mouth.
7. compressor air suction structure according to claim 6, it is characterised in that the transition passage (25) and the suction
Passage (22) is formed by rectangular slot, two the 6th deep-slotted chip breakers (211), wherein, the rectangular slot is in the cylinder (21)
Two end faces of the cylinder (21) are run through in inwall side, and the rectangular slot connects with the inlet channel (24), described in two
6th deep-slotted chip breaker (211) is respectively positioned on the cell wall of the rectangular slot and is located at the bottom land end of the rectangular slot, described in two
6th deep-slotted chip breaker (211) respectively be located at the cylinder (21) two end faces, the axis of the 6th deep-slotted chip breaker (211) with it is described
The axis of cylinder (21) tilts.
8. compressor air suction structure according to claim 1, it is characterised in that the axial cross section of the transition passage (25)
It is arched.
9. compressor air suction structure according to claim 8, it is characterised in that the suction passage (22) is in the cylinder
(21) inhalation port (2201) on end face is rectangle.
10. a kind of compressor, including：Cylinder (21), the air suction structure on the cylinder (21)；It is characterized in that, described
Air suction structure is the compressor air suction structure as described in any one in claim 1-9.
11. a kind of processing method of compressor air suction structure as claimed in claim 1, it is characterised in that including step：
1) processed on the cylinder (21) along the hole (213) radially extended of the cylinder (21)；
2) transition passage (25) and the suction passage (22), the transition passage (25) are processed on the cylinder (21)
Connected with the hole (213), and the hole (213) are located at the remote suction passage (22) one end of the transition passage (25)
Hole section forms the inlet channel (24).
12. processing method as claimed in claim 11, it is characterised in that the processing transition passage (25) in the step 2)
Step is specifically included with the suction passage (22)：
21) processed using the first circular knives (215) in the first end face of the cylinder (21) and inwall and the hole (213)
The first groove (214) of connection, the axis phase of the axis and the cylinder (21) of the first circular knives (215) described in process
Tilt；
22) the second deep-slotted chip breaker is processed in the second end face of the cylinder (21) and inwall using the second circular knives (216)
(27), the axis of the axis of the second circular knives (216) described in process and the cylinder (21) tilts and by described in
First groove (214) is processed as the first deep-slotted chip breaker (26), second deep-slotted chip breaker (27) and the hole (213) and first arc
Groove (26) connects.
13. processing method as claimed in claim 11, it is characterised in that the processing transition passage (25) in the step 2)
Step is specifically included with the suction passage (22)：
21) processed using the first circular knives (215) in the first end face of the cylinder (21) and inwall and the hole (213)
The second groove (217) of connection, the axis phase of the axis and the cylinder (21) of the first circular knives (215) described in process
Tilt；
22) processed using the second circular knives (216) in the second end face of the cylinder (21) and inwall and the hole (213)
3rd groove (218) of connection, the axis phase of the axis and the cylinder (21) of the second circular knives (216) described in process
Tilt；
23) using the 3rd circular knives (219), in the inwall side of the cylinder (21), processing runs through the first of the cylinder (21)
End face and the 5th deep-slotted chip breaker (210) of the second end face, second groove (217) is processed as the 3rd arc in process
Groove (28) and the 3rd groove (218) is processed as the 4th deep-slotted chip breaker (29), the 5th deep-slotted chip breaker (210) and the hole
(213) connect, and the 5th deep-slotted chip breaker (210) connects the 3rd deep-slotted chip breaker (28) and the 4th deep-slotted chip breaker (29).
14. the processing method as described in claim 12 or 13, it is characterised in that in process, first circular knives
(215) working end is to its non-operative end to second end face of the first end face of the cylinder (21) away from the cylinder (21)
Side tilts, and axis of the working end of first circular knives (215) to its non-operative end to the cylinder (21) tilts；
Second end face of the working end of second circular knives (216) to its non-operative end to the cylinder (21) is away from the cylinder
(21) side of first end face tilts, and the working end of second circular knives (216) is to its non-operative end to the gas
The axis of cylinder (21) tilts.
15. processing method as claimed in claim 14, it is characterised in that the axis of first circular knives (215) and institute
The angle for stating the axis of cylinder (21) is 30-60 °, the axis of second circular knives (216) and the axle of the cylinder (21)
The angle of line is 30-60 °.
16. processing method as claimed in claim 11, it is characterised in that the processing transition passage (25) in the step 2)
It is specially with the suction passage (22)：Using disk cutter (221) in the processing of the inwall side of the cylinder (21) through described
The groove (220) of two end faces of cylinder (21), the axis of disk cutter described in process (221) is perpendicular to the cylinder
(21) axis, the groove (220) connect with the hole (213).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510706323.7A CN105275822B (en) | 2015-10-26 | 2015-10-26 | Compressor air suction structure and processing method thereof and compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510706323.7A CN105275822B (en) | 2015-10-26 | 2015-10-26 | Compressor air suction structure and processing method thereof and compressor |
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| CN105275822A CN105275822A (en) | 2016-01-27 |
| CN105275822B true CN105275822B (en) | 2017-12-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1532407A (en) * | 2003-03-25 | 2004-09-29 | 乐金电子(天津)电器有限公司 | Suction loss reducing structure of closed compressor |
| CN201606253U (en) * | 2010-01-28 | 2010-10-13 | 广东美芝制冷设备有限公司 | Air absorbing hole structure of rotary compressor |
| CN201687715U (en) * | 2010-05-05 | 2010-12-29 | 广东美芝制冷设备有限公司 | Suction hole structure of rotary compressor |
| KR20120033180A (en) * | 2010-09-29 | 2012-04-06 | 현대자동차주식회사 | Structure of variable oil pump |
| CN204553227U (en) * | 2015-04-27 | 2015-08-12 | 珠海凌达压缩机有限公司 | Rotary compressor and cylinder thereof |
| CN205277833U (en) * | 2015-10-26 | 2016-06-01 | 珠海凌达压缩机有限公司 | Compressor air suction structure and compressor |
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Inventor after: Xie Lichang Inventor after: Liu Dawei Inventor after: Fan Shaowen Inventor after: Zhan Daqiang Inventor after: Feng Chenying Inventor before: Liu Dawei Inventor before: Xie Lichang Inventor before: Fan Shaowen Inventor before: Zhan Daqiang Inventor before: Feng Chenying |