CN208281185U - A kind of full engagement change wall thickness scroll vacuum pump - Google Patents
A kind of full engagement change wall thickness scroll vacuum pump Download PDFInfo
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- CN208281185U CN208281185U CN201820014347.5U CN201820014347U CN208281185U CN 208281185 U CN208281185 U CN 208281185U CN 201820014347 U CN201820014347 U CN 201820014347U CN 208281185 U CN208281185 U CN 208281185U
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Abstract
The utility model discloses a kind of full engagements to become wall thickness scroll vacuum pump, what the vortex middle line normal direction that the inside meshing profile of its dynamic vortex tooth, the inside molded line of outside meshing profile and static vortex tooth, outside molded line are made of the combination profile of circle involute and high-order full curve equidistantly obtained, obtained scroll wrap outmost turns molded line can participate in engagement, inspiratory capacity can be increased, and high pressure ratio, atm number require under needed for vortex circle number it is few, leakage rate is small；Vortex middle line is in center position by two sections of unequal circular sliding slopes of radius, when the final meshing point of the final meshing point of quiet vortex and dynamic vortex is overlapped, it is unequal to be formed by two groups of minimum closing working chamber volumes, realize two groups of suction chambers and corresponding minimum closing working chamber volume than equal, to solve existing full engagement scroll vacuum pump in Exhaust Open moment since the gas mixing of different pressures causes the reduction of the swirl vacuum efficiency of pump, the problem of whirlpool disc vibration, improves the working efficiency of scroll vacuum pump.
Description
Technical field
The utility model belongs to swirl vacuum pump technical field more particularly to a kind of suitable for oil-free lubrication vacuum system
The dynamic vortex of full engagement change wall thickness scroll vacuum pump and quiet vortex.
Background technique
Scroll vacuum pump is a kind of volume fluid machine, and since its structure is simple, components are few, smooth running, vibration
Noise is low, has been widely used in oil-free vacuum environment, semicon industry, scientific instrument industry, Medical Devices industry.Existing whirlpool
Rotation vacuum pump generallys use circle involute as scroll wrap molded line, and the type of dynamic vortex tooth and static vortex tooth outmost turns at work
Line cannot all participate in engaging, and cause Scroll plate structure size larger, structure is not compact；When the requirement of scroll vacuum pump interior volume specific ratio
When higher, vortex circle number needed for single type line scroll wrap is more, and leaky line is longer, can leakage rate increase；Patent
CN106989020A proposes a kind of dynamic vortex tooth and static vortex tooth outermost molded line can participate in the vortex toothing of engagement, makes
Inspiratory capacity increases, and by cutting method and special gas vent opens up means and realize high pressure chest gas and be discharged in advance, to guarantee whirlpool
Than equal, the gas that solution exhaust starts rear different pressures is mixed for two groups of suction chambers for revolving vacuum pump and minimum closing working chamber volume
The problem of conjunction causes efficiency to reduce, but by cutting turbulent structure obtained there are cusp at the tooth head of dynamic vortex,
The inner surface of static vortex tooth can be scratched during work, increased the abrasion of tooth head, caused to leak, and the specific location of cutting is not easy
It determines, difficulty of processing is caused to increase.
The utility model proposes that a kind of full engagement becomes wall thickness for the above problem existing for existing full engagement scroll vacuum pump
Scroll vacuum pump, suitable for high pressure ratio, the working condition requirement of big inspiratory capacity, the outermost of the dynamic vortex tooth and static vortex tooth that are proposed
Molded line can form working chamber at work, make Scroll plate structure compact dimensions, and inspiratory capacity increases, dynamic vortex tooth and static vortex tooth
Molded line use the combination profile of involute and high-order full curve, solve the circle number that is vortexed needed for existing single scroll molded line
It is more, leak wire length the problem of, the wall thickness of obtained dynamic vortex tooth and static vortex tooth at center is unequal, and static vortex tooth is most
About revolution center asymmetry, improving the prior art is to guarantee to nibble entirely for the position of whole meshing point and the final meshing point of dynamic vortex tooth
Two groups of suction chambers of scroll vacuum pump and corresponding minimum closing working chamber volume are closed than equal, cutting is used at scroll wrap tooth head
Means and generate cusp, damage static vortex tooth surface the problem of；The full engagement that is itd is proposed become wall thickness scroll vacuum pump have compared with
Good performance, the working efficiency for improving scroll vacuum pump are of great significance.
Summary of the invention
It is unequal due to being formed by suction chamber volume in order to solve existing full engagement scroll vacuum pump, cause swirl vacuum
Two groups of suction chambers and corresponding minimum closing working chamber volume are pumped than unequal, the gas mixing of different pressures in exhaust process
The problem of leading to the reduction of the swirl vacuum efficiency of pump, while causing vortex disc vibration and existing scroll vacuum pump are in high internal volume
The problem of circle number that is vortexed under requiring than, big inspiratory capacity, needed for single type line scroll wrap is more, leaks wire length, the utility model proposes
A kind of full engagement becomes wall thickness scroll vacuum pump, and scroll wrap molded line is combined using circle involute and high-order full curve
Line；The outermost molded line of obtained dynamic vortex tooth and static vortex tooth can participate in engagement and form working chamber, make scroll plate size
Reduce, inspiratory capacity increases；The scroll molded line of the dynamic vortex tooth and static vortex tooth that are proposed equidistantly is obtained by vortex middle line normal direction
, vortex middle line is in center position respectively by two sections of unequal circular sliding slopes of radius, and tie point position does not pass through revolution
Center, the tooth head thickness for equidistantly obtaining dynamic vortex tooth and static vortex tooth center by vortex middle line normal direction are unequal；In revolution
Heart position, the final meshing point of static vortex tooth and the final meshing point position of dynamic vortex tooth guarantee about revolution center asymmetry
Two groups of suction chambers and corresponding minimum closing working chamber volume are than equal, and the existing full engagement scroll vacuum pump of solution is in exhaust process
In due to the mixing of different pressures gas cause the swirl vacuum efficiency of pump reduction, the problem of causing whirlpool disc vibration, topple.
To achieve the goals above, the utility model adopts the following technical solution:
A kind of full engagement change wall thickness scroll vacuum pump, by quiet vortex (I) and dynamic vortex (II), anti-rotation mechanism (9), rack
(10), crankshaft (11), motor (12)；Wherein, quiet vortex (I) includes: static vortex tooth (1), static vortex tooth slot (2), exhaust outlet
(3), air entry (4) and fixed scroll (5), static vortex tooth (1) includes inside molded line (101) and outside molded line (102), by quiet whirlpool
The groove that the inside molded line (101) and outside molded line (102) for revolving tooth (1) are formed is static vortex tooth slot (2), and air entry (4) is quiet
The outer ring terminal position of vortex tooth socket (2)；Dynamic vortex (II) includes: dynamic vortex tooth (6) and orbiter (7), dynamic vortex tooth (6)
Include inside meshing profile (601) and outside meshing profile (602).
In revolution center O, the centre of gyration O of quiet vortex (I)1With the centre of gyration O of dynamic vortex (II)2It is overlapped, static vortex tooth
(1) meshing profile (602) is intermeshing on the outside of inside molded line (101) and dynamic vortex tooth (6), outside static vortex tooth (1)
Meshing profile (601) is intermeshing on the inside of side molded line (102) and dynamic vortex tooth (6)；Dynamic vortex tooth (6) and static vortex tooth
(1) intermeshing molded line is the equidistant relationship of normal direction, and there are continuous and derivables at an each point between intermeshing molded line
Vortex middle line (8)；By vortex middle line (8) respectively to the half R of the equidistant radius of gyration of two sides normal directionorIt is obtained after/2 continuous at each point
Smooth inside molded line (101), outside molded line (102), inside meshing profile (601) and outside meshing profile (602)；It is working
In the process, outside molded line (102), the dynamic vortex tooth (6) of the inside meshing profile (601) of dynamic vortex tooth (6) and static vortex tooth (1)
Outside meshing profile (602) can all participate in engaging with the inside molded line (101) of static vortex tooth (1).
Vortex middle line (8) includes right side middle line ea1b1c1d1With left side middle line ea2b2c2d2；Right side middle line ea1b1c1d1By
One connection circular arc ea1, the first inner ring circle involute a1b1, the first high-order full curve b1c1With the first outer ring circle involute c1d1Group
At；Left side middle line ea2b2c2d2By the second connection circular arc ea2, the second inner ring circle involute a2b2, the second high-order full curve b2c2
With the second outer ring circle involute c2d2Composition；The first connection circular arc ea at vortex middle line (8) center1Radius Rm1With second
Connect circular arc ea2Radius Rm2It is unequal, and the first connection circular arc ea1With the second connection circular arc ea2Tie point e do not pass through public affairs
Turn center O, i.e., the first connection circular arc ea1With the second connection circular arc ea2It is asymmetric about revolution center O.
The equation of each segment type line of vortex middle line (8) is as follows:
First inner ring circle involute a1b1With the second inner ring circle involute a2b2Equation be
In formula, "+" indicates the first inner ring circle involute a1b1, the second inner ring circle involute a of "-" expression2b2, and two songs
180 ° of the phase phase difference of line；
First high-order full curve b1c1With the second high-order full curve b2c2Equation be
In formula, "+" indicates the first high-order full curve, and "-" indicates the second high-order full curve, and the phase of two curves
180 ° of difference；
Wherein
First outer ring circle involute c1d1With the second outer ring circle involute c2d2Equation be
In formula, "+" indicates the first outer ring circle involute, and "-" indicates the second outer ring circle involute, and the phase of two curves
180 ° of difference；
First connection circular arc ea1Equation be
Second connection circular arc ea2Equation be
T-angle change parameter, rad in formula；Rb- base radius, mm；Rg(t)-high-order full curve base radius,
mm；Rt(t)-high-order full curve radius of curvature, mm；(xO3, yO3)-first connects circular arc ea1Centre point O3Coordinate,
mm；(xO4, yO4)-second connects circular arc ea2Centre point O4Coordinate, mm；m0、m1、m2、m3- constant.
The full engagement of the one kind proposed becomes wall thickness scroll vacuum pump, the outside meshing profile (602) of dynamic vortex tooth (6)
The suction chamber volume S that the outmost turns of the inside molded line (101) of outmost turns and static vortex tooth (1) are formeds1, with dynamic vortex tooth (6)
The suction chamber volume that the outmost turns of the outside molded line (102) of the outmost turns and static vortex tooth (1) of inside meshing profile (601) are formed
Ss2It is unequal, and Ss1> Ss2；Wall thickness t of the static vortex tooth (1) at center1With wall thickness t of the dynamic vortex tooth (6) at center2No
It is equal, and t2> t1；During the work time, as the final meshing point e of static vortex tooth (1)1With the final engagement of dynamic vortex tooth (6)
Point e2The inside molded line at outside meshing profile (602) and static vortex tooth (1) center when engagement, at dynamic vortex tooth (6) center
(101) the minimum closing working chamber volume S formedd1, at dynamic vortex tooth (6) center inside meshing profile (601) and quiet whirlpool
Revolve the minimum closing working chamber volume S that the outside molded line (102) at tooth (1) center is formedd2It is unequal, and Sd1> Sd2；It is working
In the process, it is equal with the corresponding minimum closing volumetric ratio of working chamber that two groups of suction chambers be can be realized, i.e.,
The utility model has the following beneficial effects:
1. the full engagement that is proposed becomes the dynamic vortex tooth outermost meshing profile and static vortex tooth of wall thickness scroll vacuum pump
Outermost molded line can participate in engagement, forms working chamber, increases inspiratory capacity, improve gettering efficiency, while making Scroll plate structure
Size is more compact；
2. the dynamic vortex tooth and static vortex tooth tooth head wall thickness of the full engagement change wall thickness scroll vacuum pump proposed are unequal, quiet
The final meshing point position of the final meshing point of scroll wrap and dynamic vortex tooth about revolution center asymmetry, when static vortex tooth most
When the final engagement point gearing of whole meshing point and dynamic vortex tooth, the minimum closing working chamber volume of formation is unequal, to realize
Two groups of suction chambers of scroll vacuum pump are equal with the corresponding minimum closing volumetric ratio of working chamber, guarantee that pressure at expulsion is equal, solve
Because efficiency reduces caused by different pressures gas mixing in exhaust process, whirlpool disc vibration problem；
3. the molded line that the full engagement proposed becomes wall thickness scroll vacuum pump scroll wrap is continuously bent using circle involute and high-order
The combination profile of line makes scroll vacuum pump in the case where high compression ratio, big inspiratory capacity require, and required vortex circle number is reduced, and reduces leakage
Amount improves the swirl vacuum efficiency of pump；
4. the full engagement proposed becomes the inside meshing profile and outside engagement type of the dynamic vortex tooth of wall thickness scroll vacuum pump
Line, the inside molded line of static vortex tooth and outside molded line are equidistantly obtained by vortex middle line normal direction, simplify dynamic vortex tooth and
The generating process of static vortex tooth；
5. the full engagement proposed, which becomes wall thickness scroll vacuum pump, is provided with static vortex tooth slot outer ring most using single air entry
The form of end keeps air inlet more abundant, reduces loss of suction, improves gettering efficiency.
Detailed description of the invention
Fig. 1 is that full engagement becomes wall thickness scroll vacuum pump structural schematic diagram.
Fig. 2 is quiet turbulent structure schematic diagram.
Fig. 3 is dynamic vortex structural schematic diagram.
Fig. 4 is scroll wrap molded line relation schematic diagram.
Fig. 5 is vortex middle line schematic diagram.
Fig. 6 is suction chamber Ss1Volume schematic diagram.
Fig. 7 is suction chamber Ss2Volume schematic diagram.
Fig. 8 is minimum closing working chamber volume schematic diagram.
In figure: I-quiet vortex, II-dynamic vortex, 1-static vortex tooth, 2-static vortex tooth slots, 3-exhaust outlets, 4-air-breathings
Mouthful, 5-fixed scrolls, 6-dynamic vortex tooths, 7-orbiters, 8-vortex middle lines, 9-anti-rotation mechanisms, 10-racks,
11-crankshafts, 12-motors, 101-inside molded line, 102-outside molded line, 601-inside meshing profiles, the engagement of 602-outsides
Molded line, ea1b1c1d1- right side middle line, ea1- the first connection circular arc, a1b1- the first inner ring circle involute, b1c1- the first high-order
Full curve, c1d1- the first outer ring circle involute, ea2b2c2d2- left side middle line, ea2- the second connection circular arc, a2b2- the second
Inner ring circle involute, b2c2- the second high-order full curve, c2d2- the second outer ring circle involute, O-revolution center, O1- quiet whirlpool
Revolve the centre of gyration of (I), O2The centre of gyration of-dynamic vortex (II), O3- the first connection circular arc ea1The center of circle, O4- the second connects
Meet circular arc ea2The center of circle, t1Wall thickness of-the static vortex tooth (1) at center, t2Wall thickness of-the dynamic vortex tooth (6) at center,
e1The final meshing point of-static vortex tooth (1), e2The final meshing point of-dynamic vortex tooth (6).
Specific embodiment
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
As shown in Figure 1, becoming wall thickness scroll vacuum pump structural schematic diagram for full engagement, which includes quiet vortex
(I) and dynamic vortex (II), anti-rotation mechanism (9), rack (10), crankshaft (11), motor (12).
As shown in Fig. 2, become the structural schematic diagram of the quiet vortex (I) of wall thickness scroll vacuum pump for full engagement, quiet vortex (I) packet
Static vortex tooth (1), static vortex tooth slot (2), exhaust outlet (3), air entry (4) and fixed scroll (5) are included, static vortex tooth (1) includes
Inside molded line (101) and outside molded line (102), static vortex tooth slot (2) are by the inside molded line (101) of static vortex tooth (1) and outer
What side molded line (102) was formed, outer ring terminal position of the air entry (4) in static vortex tooth slot (2).
As shown in figure 3, becoming the structural schematic diagram of the dynamic vortex (II) of wall thickness scroll vacuum pump, dynamic vortex (II) for full engagement
Including dynamic vortex tooth (6) and orbiter (7), dynamic vortex tooth (6) includes inside meshing profile (601) and outside meshing profile
(602)。
As shown in figure 4, being scroll wrap molded line relation schematic diagram；In revolution center O, the centre of gyration O of quiet vortex (I)1With
The centre of gyration O of dynamic vortex (II)2It is overlapped, engagement type on the outside of the inside molded line (101) and dynamic vortex tooth (6) of static vortex tooth (1)
Line (602) is intermeshing, meshing profile (601) on the inside of the outside molded line (102) and dynamic vortex tooth (6) of static vortex tooth (1)
It is intermeshing；Dynamic vortex tooth (6) and static vortex tooth (1) intermeshing molded line are the equidistant relationships of normal direction, and are intermeshed
Molded line between there are the vortex middle lines (8) of continuous and derivable at an each point；Vortex middle line (8) is equidistant to two sides normal direction respectively
The half R of the radius of gyrationorInside molded line (101), outside molded line (102), the inside engagement of continuous and derivable at each point are obtained after/2
Molded line (601) and outside meshing profile (602)；During the work time, the inside meshing profile (601) of dynamic vortex tooth (6) with it is quiet
The medial type of the outside molded line (102) of scroll wrap (1), the outside meshing profile (602) of dynamic vortex tooth (6) and static vortex tooth (1)
Line (101) can all participate in engaging；Wall thickness t of the static vortex tooth (1) obtained by vortex middle line (8) at center1With it is dynamic
Wall thickness t of the scroll wrap (6) at center2It is unequal, and t2> t1。
As shown in figure 5, being vortex middle line schematic diagram, vortex middle line (8) includes right side middle line ea1b1c1d1With left side middle line
ea2b2c2d2；Right side middle line ea1b1c1d1By the first connection circular arc ea1, the first inner ring circle involute a1b1, the first high-order it is continuously bent
Line b1c1With the first outer ring circle involute c1d1Composition；Left side middle line ea2b2c2d2By the second connection circular arc ea2, the second inner ring circle gradually
Burst at the seams a2b2, the second high-order full curve b2c2With the second outer ring circle involute c2d2Composition；At vortex middle line (8) center
One connection circular arc ea1Radius Rm1With the second connection circular arc ea2Radius Rm2It is unequal, and the first connection circular arc ea1With second
Connect circular arc ea2Tie point e do not pass through revolution center O, i.e., the first connection circular arc ea1With the second connection circular arc ea2About revolution
Center O is asymmetric.
The equation of vortex middle line (8) each section of curve is as follows:
First inner ring circle involute a1b1With the second inner ring circle involute a2b2Equation be
In formula, "+" indicates the first inner ring circle involute a1b1, the second inner ring circle involute a of "-" expression2b2, and two songs
180 ° of the phase phase difference of line；
First high-order full curve b1c1With the second high-order full curve b2c2Equation be
In formula, "+" indicates the first high-order full curve, and "-" indicates the second high-order full curve, and the phase of two curves
180 ° of difference；
Wherein
First outer ring circle involute c1d1With the second outer ring circle involute c2d2Equation be
In formula, "+" indicates the first outer ring circle involute, and "-" indicates the second outer ring circle involute, and the phase of two curves
180 ° of difference；
First connection circular arc ea1Equation be
Second connection circular arc ea2Equation be
In formula: t-angle change parameter, rad；Rb- base radius, mm；Rg(t)-high-order full curve basic circle half
Diameter, mm；Rt(t)-high-order full curve radius of curvature, mm；(xO3, yO3)-first connects circular arc ea1Centre point O3Seat
Mark, mm；(xO4, yO4)-second connects circular arc ea2Centre point O4Coordinate, mm；m0、m1、m2、m3- constant.
As shown in fig. 6, being suction chamber Ss1Volume schematic diagram, Ss1For the outside meshing profile (602) of dynamic vortex tooth (6)
The suction chamber volume that the outmost turns of the inside molded line (101) of outmost turns and static vortex tooth (1) are formed.
As shown in fig. 7, being suction chamber Ss2Volume schematic diagram, Ss2For the inside meshing profile (601) of dynamic vortex tooth (6)
The working chamber volume that the outmost turns of the outside molded line (102) of outmost turns and static vortex tooth (1) are formed.
Two groups of suction chamber volume S of Fig. 6 and scroll vacuum pump shown in Fig. 7s1And Ss2It is unequal, and Ss1> Ss2。
As shown in figure 8, for minimum closing working chamber volume schematic diagram；As the final meshing point e of static vortex tooth (1)1With it is dynamic
The final meshing point e of scroll wrap (6)2Outside meshing profile (602) and static vortex tooth when engagement, at dynamic vortex tooth (6) center
(1) the minimum closing working chamber volume S that the inside molded line (101) at center is formedd1, with the inside at dynamic vortex tooth (6) center
The minimum closing working chamber volume S that outside molded line (102) at meshing profile (601) and static vortex tooth (1) center is formedd2Not phase
Deng, and Sd1> Sd2；During the work time, it can be realized the volumetric ratio phase of two groups of suction chambers with corresponding minimum closing working chamber
Deng that is,
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this
The limitation of type protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (3)
1. a kind of full engagement becomes wall thickness scroll vacuum pump, including quiet vortex (I), dynamic vortex (II), anti-rotation mechanism (9), rack
(10), crankshaft (11) and motor (12), it is characterized in that: quiet vortex (I) includes static vortex tooth (1), static vortex tooth slot (2), exhaust
Mouth (3), air entry (4) and fixed scroll (5), static vortex tooth (1) include inside molded line (101) and outside molded line (102), quiet whirlpool
Revolving tooth socket (2) is formed by the inside molded line (101) and outside molded line (102) of static vortex tooth (1), and air entry (4) is in quiet whirlpool
Revolve the outer ring terminal position of tooth socket (2)；Dynamic vortex (II) includes dynamic vortex tooth (6) and orbiter (7), dynamic vortex tooth (6) packet
Include inside meshing profile (601) and outside meshing profile (602)；
In revolution center O, the centre of gyration O of quiet vortex (I)1With the centre of gyration O of dynamic vortex (II)2It is overlapped, static vortex tooth (1)
Inside molded line (101) and dynamic vortex tooth (6) on the outside of meshing profile (602) be intermeshing, the lateral of static vortex tooth (1)
Meshing profile (601) is intermeshing on the inside of line (102) and dynamic vortex tooth (6)；Dynamic vortex tooth (6) and static vortex tooth (1) phase
The molded line mutually engaged is the equidistant relationship of normal direction, and there are in the vortex of continuous and derivable at an each point between intermeshing molded line
Line (8)；By vortex middle line (8) respectively to the half R of the equidistant radius of gyration of two sides normal directionorContinuous and derivable at each point is obtained after/2
Inside molded line (101), outside molded line (102), inside meshing profile (601) and outside meshing profile (602)；In the course of work
In, the outside molded line (102) of the inside meshing profile (601) of dynamic vortex tooth (6) and static vortex tooth (1), dynamic vortex tooth (6) it is outer
Side meshing profile (602) can all participate in engaging with the inside molded line (101) of static vortex tooth (1)；
Vortex middle line (8) includes right side middle line ea1b1c1d1With left side middle line ea2b2c2d2；Right side middle line ea1b1c1d1Connected by first
Meet circular arc ea1, the first inner ring circle involute a1b1, the first high-order full curve b1c1With the first outer ring circle involute c1d1Composition；
Left side middle line ea2b2c2d2By the second connection circular arc ea2, the second inner ring circle involute a2b2, the second high-order full curve b2c2With
Two outer ring circle involute c2d2Composition；The first connection circular arc ea at vortex middle line (8) center1Radius Rm1With the second connection
Circular arc ea2Radius Rm2It is unequal, and the first connection circular arc ea1With the second connection circular arc ea2Tie point e do not pass through in revolution
Heart O, i.e., the first connection circular arc ea1With the second connection circular arc ea2It is asymmetric about revolution center O.
2. as described in claim 1, the equation of vortex middle line (8) each section of curve is as follows:
First inner ring circle involute a1b1With the second inner ring circle involute a2b2Equation be
In formula, "+" indicates the first inner ring circle involute a1b1, the second inner ring circle involute a of "-" expression2b2, and the phase of two curves
180 ° of phase difference；
First high-order full curve b1c1With the second high-order full curve b2c2Equation be
In formula, "+" indicates the first high-order full curve, and "-" indicates the second high-order full curve, and the phase phase difference of two curves
180°；
Wherein
First outer ring circle involute c1d1With the second outer ring circle involute c2d2Equation be
In formula, "+" indicates the first outer ring circle involute, and "-" indicates the second outer ring circle involute, and the phase phase difference of two curves
180°；
First connection circular arc ea1Equation be
Second connection circular arc ea2Equation be
In formula: t-angle change parameter, rad；Rb- base radius, mm；Rg(t)-high-order full curve base radius, mm；
Rt(t)-high-order full curve radius of curvature, mm；(xO3, yO3)-first connects circular arc ea1Centre point O3Coordinate, mm；
(xO4, yO4)-second connects circular arc ea2Centre point O4Coordinate, mm；m0、m1、m2、m3- constant.
3. a kind of full engagement as described in claim 1 becomes wall thickness scroll vacuum pump, it is characterized in that: the outside of dynamic vortex tooth (6)
The suction chamber volume S that the outmost turns of the inside molded line (101) of the outmost turns and static vortex tooth (1) of meshing profile (602) are formeds1,
With the outmost turns of the outside molded line (102) of the outmost turns and static vortex tooth (1) of the inside meshing profile (601) of dynamic vortex tooth (6)
The suction chamber volume S of formations2It is unequal, and Ss1> Ss2；Wall thickness t of the static vortex tooth (1) at center1Exist with dynamic vortex tooth (6)
Wall thickness t at center2It is unequal, and t2> t1；During the work time, as the final meshing point e of static vortex tooth (1)1And dynamic vortex
The final meshing point e of tooth (6)2When engagement, in the outside meshing profile (602) and static vortex tooth (1) at dynamic vortex tooth (6) center
The minimum closing working chamber volume S that inside molded line (101) at the heart is formedd1, with the inside engagement type at dynamic vortex tooth (6) center
The minimum closing working chamber volume S that outside molded line (102) at line (601) and static vortex tooth (1) center is formedd2It is unequal, and
Sd1> Sd2；During the work time, it is equal with the corresponding minimum closing volumetric ratio of working chamber that two groups of suction chambers be can be realized, i.e.,
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939681A (en) * | 2018-01-05 | 2018-04-20 | 中国石油大学(华东) | A kind of full engagement becomes wall thickness scroll vacuum pump |
| CN114033673A (en) * | 2021-10-28 | 2022-02-11 | 武汉华中数控股份有限公司 | Design method of general molded line of scroll compressor |
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2018
- 2018-01-05 CN CN201820014347.5U patent/CN208281185U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939681A (en) * | 2018-01-05 | 2018-04-20 | 中国石油大学(华东) | A kind of full engagement becomes wall thickness scroll vacuum pump |
| CN114033673A (en) * | 2021-10-28 | 2022-02-11 | 武汉华中数控股份有限公司 | Design method of general molded line of scroll compressor |
| CN114033673B (en) * | 2021-10-28 | 2023-08-22 | 武汉华中数控股份有限公司 | Design method of general molded line of scroll compressor |
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Granted publication date: 20181225 Termination date: 20220105 |