CN110242539A - The crank axle and reciprocating compressor of reciprocating compressor - Google Patents
The crank axle and reciprocating compressor of reciprocating compressor Download PDFInfo
- Publication number
- CN110242539A CN110242539A CN201910168816.8A CN201910168816A CN110242539A CN 110242539 A CN110242539 A CN 110242539A CN 201910168816 A CN201910168816 A CN 201910168816A CN 110242539 A CN110242539 A CN 110242539A
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- crank
- component
- cylinder
- reciprocating compressor
- axle
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- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000011796 hollow space material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 11
- 239000012530 fluid Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 5
- 230000014509 gene expression Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 241001515806 Stictis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Technical problem: the crank axle and reciprocating compressor of a kind of reciprocating compressor of pressure design that can more closely implement each cylinder are provided.Solution: the crank axle of the crank mechanism for reciprocating compressor has the first component and second component.The first component includes the first crank-pin that can be rotatably supported at the axle journal of crank box and can connect for first connecting rod, wherein the first connecting rod is corresponding with the first cylinder.Second component includes the second crank-pin that can be connected for second connecting rod, wherein the second connecting rod is corresponding with the second cylinder.These first components and second component are configured to axially link each other.
Description
Technical field
This disclosure relates to a kind of crank axle of the reciprocating compressor with multiple cylinders that can generate compressed gas, with
And reciprocating compressor.
Background technique
One kind as the compressor for compression fluid, it is known to a kind of so-called reciprocating compressor, by
Make reciprocating motion of the pistons in cylinder barrel and make the volume variation for being formed in the discharge chambe of cylinder barrel and piston space, to carry out the pressure of fluid
Contracting.The movement of reciprocating compressor is for example by the way that the rotary motion for being input to rotary shaft to be converted into back and forth via crank mechanism
Movement, and the piston of each cylinder is passed to realize.Such crank mechanism includes the crank axle being contained in crank box, crank
Axis mainly includes axle journal, via bearing support in crank box；And crank-pin, prejudicially it is arranged relative to axle journal, and
Connecting rod for being linked to piston can be connected rotatably.
In the crank mechanism for the reciprocating compressor for having multiple cylinders, connecting rod corresponding with each cylinder is relative to crank
Axis connection.Here, Figure 16 is the cross-sectional view for indicating reciprocating compressor 1 ' documented by patent document 1 from side.For reciprocal
The crank mechanism 12 ' of formula compressor 1 ' is to accommodate crank axle 14 ' in crank box 10 ' and constitute.The crank axle 14 ' is snakelike
Crank axle, have via bearing 54 ', 56 ' can be rotatably supported at crank box 10 ' axle journal 16 ' and relative to
The crank-pin 18 ' being arranged in 16 ' eccentric position of axle journal.In crank-pin 18 ', can be rotated via bearing 36a ', 36b ' respectively
Ground is connected with multiple connecting rod 34a ' corresponding with each cylinder, 34b '.
Existing technical literature
Patent document
Patent document 1: Japanese Patent Publication 2008-297924 bulletin
Summary of the invention
(1) technical problems to be solved
In snakelike crank axle 14 ', as shown in figure 16, multiple connecting rod 34as ' corresponding with each cylinder, 34b ' are connected to
Common crank-pin 18 ', therefore in each cylinder, the stroke amount of the piston moved back and forth in cylinder barrel is also equal.Therefore, into
In the case where the pressure design of each cylinder of row, since the stroke of crank-pin 18 ' cannot be changed, by the cylinder for changing each cylinder
Cylinder, the quantity of piston, diameter carry out the pressure design of each cylinder.
But there is limitation in such pressure design carried out according to the cylinder barrel of each cylinder, the quantity of piston, diameter
Property, in order to carry out more accurate pressure design, seek the new design method also including the stroke amount of piston.Especially exist
With high-pressure side cylinder by the so-called multi-stag compressor further compressed with the fluid of low-pressure side cylinder compression, due to including pressure
Power designs the multiple cylinders to differ widely, therefore such requirement is very strong.
At least one embodiment of the invention is to complete in view of the foregoing, it is intended that providing a kind of energy
The crank axle and reciprocating compressor of the reciprocating compressor of enough pressure designs for more closely implementing each cylinder.
(2) technical solution
(1) to solve the above-mentioned problems, the crank axle of the reciprocating compressor of at least one embodiment of the invention exists
With in the reciprocating compressor of multiple cylinders that can generate compressed gas, it is being used to convert rotational motion to move back and forth
Crank mechanism in use, the crank axle of the reciprocating compressor has: the first component comprising can be rotatably supported at
The axle journal of crank box and the first crank-pin that can be connected for first connecting rod, wherein the first connecting rod and be contained in described
First cylinder of multiple cylinders is corresponding；And second component comprising the second crank-pin that can be connected for second connecting rod,
In, the second connecting rod is corresponding with the second cylinder of the multiple cylinder is contained in, the first component and the second component
It is configured to axially link each other.
According to the structure of above-mentioned (1), is axially linked by the first component independent of each other and second component and constituted
Crank axle.Therefore, in the first component and second component, bias of the crank-pin relative to axle journal can separately be set
Amount.Thereby, it is possible to flexibly set the path increment for being connected to each connecting rod of each crank-pin in a manner of it can rotate, therefore past
In twin compressor, by changing the path increment of piston, the previous high pressure design of ratio of precision is thus allowed for.
(2) in several embodiments, in the structure of above-mentioned (1), first crank-pin and second crank-pin
There is eccentricity different from each other relative to the axle journal.
According to the structure of above-mentioned (2), by keeping the eccentricity of the first crank-pin and the second crank-pin different from each other, so as to
Enough make the path increment of the first cylinder and the piston in the second cylinder also different from each other.
(3) in several embodiments, in the structure of above-mentioned (1) or (2), the second component, which has, supplies described first
It the end of component can be along the insertion hole being axially inserted into.
According to the structure of above-mentioned (3), inserting for second component is set to by the way that the front end of the first axle journal to be axially inserted into
Enter hole, so as to the axially first component and second component connected to each other.
(4) in several embodiments, in any one structure of above-mentioned (1) to (3), the first component is provided with
Multiple first crank-pins, each first crank-pin are equally spaced configured along the circumferential direction of the axle journal.
According to the structure of above-mentioned (4), it is provided in the first component multiple for the of connecting rod corresponding with multiple cylinders connection
One crank-pin.These each first crank-pins circumferentially equally spaced configure, therefore do not use and chase after as counterweight
Add structure, and good balance is ensured that with first component monomer.Above-mentioned crank axle is the connection first component and second
What component was constituted, but due to being achieved with good balance as such with first component monomer, do not consider and second component
Relationship can complete balanced adjustment, can get good productivity.
(5) in several embodiments, in the structure of above-mentioned (4), the first component has: including the axle journal
Main part；And it is provided at least part of addition department of first crank-pin.
According to the structure of above-mentioned (5), the first component is constituted by combined body portion and addition department, thus even if changing
In the case where number of cylinders possessed by reciprocating compressor, main part can not also be changed and only change the song for being set to addition department
The quantity of handle pin, therefore it is able to carry out economic design.
(6) in several embodiments, in the structure of above-mentioned (5), the addition department has cylindrical shape, the main body
Portion is by being inserted into the hollow space of the addition department from the opposite side of the second component, to make the main part and described chase after
Portion is added to be constituted in a manner of it can link.
According to the structure of above-mentioned (6), addition department is by being inserted into main part from the opposite side of second component, so as in crank
Good structural stability is obtained when axis rotation driving.
(7) to solve the above-mentioned problems, the reciprocating compressor of at least one embodiment of the invention has above-mentioned (1)
The crank axle of any structure into (6).
According to the structure of above-mentioned (7), in the first component and second component, due to can separately set crank-pin
Relative to the eccentricity of axle journal, therefore the stroke that can be rotatingly connected to each connecting rod of each crank-pin can be flexibly set
Amount.As a result, in reciprocating compressor, the path increment by changing piston is able to carry out the previous high pressure of ratio of precision and sets
Meter.
(8) in several embodiments, in the structure of above-mentioned (7), first cylinder is low-pressure side cylinder, described
Two cylinders are the high-pressure side cylinders for further compressing the discharge gas of the low-pressure side cylinder.
According to the structure of above-mentioned (8), by the so-called compound compressor for having low-pressure side cylinder and high-pressure side cylinder
Eccentricity of the crank-pin relative to axle journal can be independently set, according to each cylinder so as to flexibly set stroke amount.
(3) beneficial effect
At least one embodiment according to the present invention is capable of providing a kind of pressure that can more closely implement each cylinder
The crank axle and reciprocating compressor of the reciprocating compressor of design.
Detailed description of the invention
Fig. 1 is the perspective view for indicating the appearance of reciprocating compressor of an embodiment of the invention.
Fig. 2 is the line A-A cross-sectional view of Fig. 1.
Fig. 3 is the schematic diagram of the flowing of the fluid in the reciprocating compressor for summarily indicate Fig. 1.
Fig. 4 is the perspective view for extracting the crank axle of Fig. 2 and indicating.
Fig. 5 is the exploded perspective view of Fig. 4.
Fig. 6 is the cross-sectional view of Fig. 4.
Fig. 7 is the variation of Fig. 6.
Fig. 8 is the flow chart that the assemble method of crank mechanism is indicated with each process.
Fig. 9 is the perspective view for schematically showing the assembling situation of the crank mechanism of the step S1 of Fig. 8 into S3.
Figure 10 is the perspective view for schematically showing the assembling situation of the crank mechanism in the step S4 of Fig. 8.
Figure 11 is the perspective view for schematically showing the assembling situation of the crank mechanism in the step S5 of Fig. 8.
Figure 12 is the perspective view for schematically showing the assembling situation of the crank mechanism in the step S6 of Fig. 8.
Figure 13 is the perspective view for schematically showing the assembling situation of the crank mechanism in the step S7 and S8 of Fig. 8.
Figure 14 is the perspective view for schematically showing the assembling situation of the crank mechanism in the step S9 of Fig. 8.
Figure 15 is the perspective view for indicating the crank mechanism completed by the assemble method of Fig. 8.
Figure 16 is the cross-sectional view that reciprocating compressor documented by patent document 1 is indicated from side.
Description of symbols
1- reciprocating compressor；The high-pressure side 2HP- cylinder；2LP- low-pressure side cylinder；10- crank box；10a- low-pressure side crank
Case；10a1- cartridge；10a2- antetheca；The high-pressure side 10b- crank box；11- through-Penetration portion；12- crank mechanism；14- crank axle；
The 14a- first component；14a1- main part；14a2- addition department；14b- second component；16- axle journal；18- crank-pin；34- connecting rod；
36- bearing；43- counterweight；The next door 52-；52a- through hole；54,56- bearing.
Specific embodiment
The several embodiments of the present invention are illustrated with reference to the accompanying drawings.But as documented by embodiment or
Size, material, shape, its relative configuration etc. of person's structure member shown in the accompanying drawings are not offered as the scope of the present invention
It is defined in this, is only to illustrate example.
For example, " on some direction ", " along some direction ", " parallel ", " orthogonal ", "center", " concentric " or " same
The expression of the opposite or absolute configuration of the expressions such as axis " not only strictly indicates such configuration, also illustrate that with tolerance,
Or the state of the angle, distance ground relative displacement with the degree that can obtain identical function.
In addition, for example, indicating that the expression of the shapes such as quadrilateral shape, cylindrical shape not only indicates on geometrically stricti jurise
The shapes such as quadrilateral shape, cylindrical shape, be also illustrated in the range of capable of obtaining same effect comprising bump, corner portion etc.
Shape.
On the other hand, the expression of " having ", " containing ", "comprising", " comprising " or " having " constituent element is not
It is the existing exclusiveness expression for excluding other constituent elements.
< reciprocating compressor >
Fig. 1 is the reciprocating compressor (following to take the circumstances into consideration to be known as " compressor ") 1 for indicating an embodiment of the invention
The perspective view of appearance, Fig. 2 are the line A-A cross-sectional views of Fig. 1, and Fig. 3 is the flowing of the fluid in the compressor 1 for summarily indicate Fig. 1
Schematic diagram.
Compressor 1 be with can using the piston in cylinder barrel moving back and forth come at least one cylinder 2 of compression fluid
Reciprocating compressor.The fluid of compressed object as compressor 1 is the gas such as air, is taken into from air inlet pipe 4.At this
In embodiment, compressor 1 is booster compressor, and to 4 supplying compressed gas of air inlet pipe, which is pressed into pressure in advance
Power is higher than atmospheric pressure.
In addition, in the following description, the case where being oil free type to compressor 1, is illustrated, but as long as without special
It records, can also be suitable for oil lubricating type.
Compressor 1 has at least one cylinder 2.In the present embodiment, compressor 1 has multiple cylinders 2.Multiple cylinders
2 include low-pressure side cylinder 2LP1,2LP2,2LP3 and high-pressure side cylinder 2HP.Compressor 1 is multi-stage compression type, such as Fig. 3 institute
Show, from the compressed gas (pressure P0) that air inlet pipe 4 supplies from the first space 50a via piping 51a, 51b, 51c to low-pressure side
Cylinder 2LP1,2LP2,2LP3 branch is pressurized to pressure P1 (> P0) respectively.It is discharged from low-pressure side cylinder 2LP1,2LP2,2LP3
Pressure be P1 compressed gas via piping 53a, 53b, 53c after intercooler 82a, 82b are cooling, via piping 55a,
55b, second space 50b and piping 57 are further forced into pressure P2 (> P1) in high-pressure side cylinder 2HP.Pressure is the pressure of P2
Contracting gas is discharged from discharge pipe 59.
In addition, in the present embodiment, to the tool of compressor 1, there are three low-pressure side cylinder 2LP1,2LP2,2LP3, Yi Jiyi
The case where a high-pressure side cylinder 2HP, is illustrated, but can take the circumstances into consideration the quantity of change low-pressure side cylinder and high-pressure side cylinder.
Each cylinder 2 from the power that the power sources such as external engine, motor (motor) input is configured at by driving.
As shown in Figure 1, the power from such power source is inputted via the flywheel belt pulley 6 for the back side for being set to compressor 1.Flywheel
Output axis connection of the pulley 6 via driving with (not shown) and power source.
Flywheel belt pulley 6 is configured to at least one blade for radially extending, when rotating driving by power source
When, it is functioned as the Sirocco fan that the blade can be utilized to form the cooling wind 8 flowed relative to compressor 1.In addition,
The flow direction of cooling wind 8 may be reversed.
When flywheel belt pulley 6 rotates driving by power source, which is converted into back and forth transporting by crank mechanism 12
It is dynamic, and pass to each cylinder 2.As shown in Fig. 2, crank mechanism 12 is configured to, in the crank box 10 being integrally formed with each cylinder 2
The crank axle 14 rotated from externally input rotary motion can be utilized by inside containing.
Detailed construction about crank axle 14 will be aftermentioned, and as summarily showing in Fig. 2, crank axle 14 has:
The axle journal 16 and multiple crank-pins 18 corresponding with each cylinder 2 of crank box 10 can be rotatably supported at.Specifically, more
A crank-pin 18 include: first crank-pin 18a, 18b, 18c corresponding with low-pressure side cylinder 2LP1,2LP2,2LP3 and with height
Press the corresponding second crank-pin 18d of side cylinder 2HP.
In first crank-pin 18a, 18b, 18c, it is able to be rotatably mounted and three via bearing 36a, 36b, 36c
Low-pressure side cylinder 2LP1,2LP2,2LP3 corresponding first connecting rod 34a, 34b, 34c.In the second crank-pin 18d, via bearing 36d
Second connecting rod 34d corresponding with high-pressure side cylinder 2HP is rotatably installed.
In crank mechanism 12, when inputting rotary motion to crank axle 14, via first connecting rod 34a, 34b, 34c, the
Two connecting rod 34d pass to each cylinder 2.Each cylinder 2 has: the cylinder barrel 38 that has a substantially cylindrical shape and being configured at cylinder barrel 38
Interior piston 40.Piston 40 is connected to one end of each connecting rod 34, and the rotary motion of crank axle 14 is converted into the piston in cylinder barrel 38
40 reciprocating motion.In each cylinder 2, the fluid for being directed into the discharge chambe 42 limited by cylinder barrel 38 and piston 40 passes through piston 40
Reciprocating motion and compressed.
In addition, piston 40 is such as synthesis piston (compound resin piston), using when compression piston ring ends (not shown)
The method that the position that do not reveal theoretically when gap is fixed.
In addition, only showing the detailed construction of the low-pressure side cylinder 2LP1 in three low-pressure side cylinders, low-pressure side gas in Fig. 2
Cylinder 2LP2 and 2LP3 is also the same.
Crank box 10 is configured to, low-pressure side crank box 10a, He Yugao corresponding with low-pressure side cylinder 2LP1,2LP2,2LP3
The corresponding high-pressure side crank box 10b of side cylinder 2HP is pressed to link via next door 52.That is, the inner space 50 of crank box 10 by by
Next door 52 separates to be divided into first space 50a corresponding with low-pressure side cylinder 2LP1,2LP2,2LP3 and and high-pressure side
The corresponding second space 50b of cylinder 2HP.
In addition, low-pressure side crank box 10a is configured to, have along crank axle 14 axial cartridge 10a1 and
Close the antetheca 10a2 of one end side opening of cartridge.In addition, aftermentioned crank axle 14 is across low-pressure side crank box 10a and height
Side crank box 10b setting is pressed, which configures in a manner of through next door 52.
The crank axle 14 for constituting crank mechanism 12 runs through low-pressure side crank box 10a and next door 52, using in low-pressure side crank
The bearing 56 of the through-Penetration portion 52a setting for the bearing 54 and next door 52 that the through-Penetration portion 11 of case 10a is arranged and can be relative to song
Handle case 10 pivotally supports.
In addition, the through-Penetration portion 11 in low-pressure side crank box 10a is configured with sealing 58, the sealing 58 is for ensuring crank
The inner space 50 (the first space 50a) of case 10 is relative to external leakproofness.In addition, the through-Penetration portion 52a of next door 52 is configured
There is sealing 60, which is used to ensure the leakproofness between the first space 50a of crank box 10 and second space 50b.
In addition, the inner space 50 (the first space 50a and second space 50b) of crank box 10 is configured to, by being supplied to
Compressed gas more than atmospheric pressure, to reduce and the discharge chambe (space limited by cylinder barrel 38 and piston 40) of each cylinder 2
Pressure difference.That is, compressor 1 is the compressor of crank box compression type.By the pressure for reducing inner space 50 Yu discharge chambe like this
Power is poor, thus load when inhibiting the suction stroke of each cylinder 2, and obtain higher energy-saving effect.
In the present embodiment, as shown in figure 3, the fluid being taken into from air inlet pipe 4 (is pressurized to the gas that pressure is P0 in advance
Body) it is supplied first to the first space 50a of crank box 10, and carry out the pressurization of the first space 50a.In addition, the first space 50a structure
Become, is connect respectively with the air inlet side of low-pressure side cylinder 2LP1,2LP2,2LP3 via piping 51a, 51b, 51c, it is empty in first
Between the compressed gas (pressure P0) of 50a supplied to each low-pressure side cylinder 2LP1,2LP2,2LP3.
With each low-pressure side cylinder 2LP1,2LP2,2LP3 pressurization compressed gas (pressure P1) respectively via piping 53a,
53b, 53c are conveyed to intercooler 82a, 82b.Intercooler 82a, 82b carry out with low-pressure side cylinder 2LP1,2LP2,
The cooling of the compressed gas (pressure P1) of 2LP3 pressurization, compressed gas (pressure P1) after cooling is via piping 55a, 55b
It is conveyed to the second space 50b of crank box 10, and is used for the pressurization of second space 50b.Second space 50b is via piping 57 and height
The air inlet side connection of side cylinder 2HP is pressed, the compressed gas (pressure P1) in second space 50b is supplied to high-pressure side cylinder 2HP
It gives.With the compressed gas (pressure P2) of high-pressure side cylinder 2HP pressurization from piping 59 to the discharge (not shown) of demand destination.
As noted previously, as inner space 50 is divided into the first space 50a and second space 50b, therefore by next door 52
One space 50a be pressurized to low-pressure side cylinder 2LP1,2LP2,2LP3 corresponding pressure value, and second space 50b is pressurized
To with high-pressure side cylinder 2HP corresponding pressure value.In this way, in compressor 1, by dividing inner space 50 with next door 52, from
And the pressurization value of the first space 50a and second space 50b can be independently set to the value mutually fitted with each cylinder.
The detailed construction of < crank axle >
Then, the detailed construction for the crank axle 14 for being contained in crank mechanism 12 is illustrated.Fig. 4 is the song for extracting Fig. 2
The perspective view that arbor 14 indicates, Fig. 5 is the exploded perspective view of Fig. 4, and Fig. 6 is the cross-sectional view of Fig. 4.
In addition, being shown together in Fig. 4 and Fig. 5 for crank axle 14 can be pivotally supported relative to crank box 10
Bearing 54,56.
Crank axle 14 has: can be relative to axle journal 16, the Yi Jiyu that crank box 10 pivotally supports via bearing 54,56
The corresponding multiple crank-pins 18 of each cylinder 2.Crank axle 14 is to link first component 14a and second component 14b both parts
And it constitutes.First component 14a and second component 14b can by respectively arbitrarily distribute crank axle 14 constituent element in a manner of structure
At, but in the present embodiment, as an example, the first crank-pin corresponding with low-pressure side cylinder 2LP1,2LP2,2LP3 is shown
18a, 18b, 18c are set to first component 14a, and are set to second component with the second crank-pin 18d of high-pressure side cylinder 2HP
The case where 14b.
On first component 14a, the edge first crank-pin 18a, 18b, 18c corresponding with low-pressure side cylinder 2LP1,2LP2,2LP3
Axially with respect to axle journal 16 be arranged.From end on observation, first crank-pin 18a, 18b, 18c along axle journal 16 circumferential direction at equal intervals
(interval 120 degree) configure, being respectively relative to central axis has equal eccentricity.First component 14a can be with monomer as a result,
It is balanced adjustment, as needed, counterweight as second component 14b as be described hereinafter is set can also be added.
In the present embodiment, especially as shown in Fig. 2, first component 14a has: the main part including axle journal 16
The 14a1 and addition department 14a2 for being provided at least one the first crank-pin 18.That is, by linking addition department to main part 14a1
14a2, and constitute first component 14a.The quantity for being set to the first crank-pin 18 of addition department 14a2 can be according to reciprocating compression
Number of cylinders possessed by machine 1 and take the circumstances into consideration to change.In this example, main part 14a1 is provided with the first crank-pin 18c, is left two
A first crank-pin 18a and 18b are set to addition department 14a2.By combined body portion 14a1 like this and addition department 14a2 come structure
At first component 14a, thus even if change reciprocating compressor 1 possessed by number of cylinders in the case where, can also be constant
More main part 14a1 and only change the quantity for being set to the crank-pin of addition department 14a2, therefore be able to carry out economic set
Meter.
Addition department 14a2 have cylindrical shape, by wherein absolutely empty insertion include axle journal 16 main part 14a1 to
It is constituted in a manner of it can link.Front end with the addition department 14a2 of main part 14a1 connection be set to the of main part 14a1
One crank-pin 18c is abutted, to limit axial position.In addition, addition department 14a2 is relative to main part 14a1 from second component 14b
Opposite side insertion, thus crank axle 14 rotate drive when can get good structural stability.
In addition, in the example of fig. 6, instantiating and the first crank-pin 18c being arranged in main part 14a1 and in addition department
The case where being left two the first crank-pin 18a and 18b is arranged in 14a2, but can also be as shown in fig. 7, institute is arranged in addition department 14a2
The first crank-pin 18 having.In the latter case, main part 14a1 main composition axle journal 16.
Second component 14b has second crank-pin 18d corresponding with high-pressure side cylinder 2HP.In addition, second component 14b has
There is the insertion hole 30 that the front end for first component 14a can be axially inserted into.As shown in figure 4, being inserted in the insertion hole 30
First component 14a is by being inserted into bolt 35 to the fixation hole 32 being radially open in second component 14b, thus relative to second
Part 14b is fixed.
In addition, as shown in FIG. 6 and 7, the outer surface of the main part 14a1 in first component 14a or addition department
The keyway 19a that at least one party's setting of the inner surface of 14a2 is formed along the extending direction of crank axle 14, by keyway 19a
It is inserted into key member 19b, to limit the relative positional relationship (rotation especially in circumferential direction of main part 14a1 and addition department 14a2
Turn).
In addition, second component 14b has the counterweight 43 of balanced adjustment.As described above, second component 14b has
The second single crank-pin 18d, therefore by the way that such counterweight 43 is arranged, so as to use second component 14b monomer
Simply it is balanced adjustment.
In addition, in the case where multiple second crank-pin 18 are arranged in second component 14b, by circumferentially equally spaced matching
Each second crank-pin 18 is set, so that counterweight 43 can also be omitted as the first component 14a of present embodiment.
Like this, the crank axle 14 being made of first component 14a and second component 14b can be rotated using bearing 54,56
Ground is supported in crank box 10.Here, bearing 54,56 is configured in a manner of supporting the first component 14a in crank axle 14.In more detail
For, bearing 54,56 is configured at first crank-pin 18a, 18b, 18c for being set to first component 14a in first component 14a
Two sides.In this way, in the present embodiment, using bearing 54,56 at multiple positions by crank axle 14 relative to crank box 10
Support.
In addition it is also possible to replace such structure and use by the double base at the both ends of two bearing support crank axles 14
Structure.
First crank-pin 18a, 18b, 18c possessed by crank axle 14, the second crank-pin 18d are respectively relative to the tool of axle journal 16
There is defined eccentricity corresponding with the stroke amount of piston 40 in each cylinder.Here, being set to three of first component 14a
One crank-pin 18a, 18b, 18c eccentricity having the same each other, but it is set to the second crank-pin 18d energy of second component 14b
Enough there is different eccentricity.It is as described above, crank axle 14 by axially link first component 14a independent of each other and
Second component 14b and constitute, therefore can independently set eccentricity of each crank-pin 18 relative to axle journal 16.Thereby, it is possible to
The path increment for each connecting rod 34 connecting in a manner of it can rotate with each crank-pin 18 is flexibly set, therefore in reciprocating compression
In machine 1, by changing the stroke amount of piston 40, so as to carry out the previous high pressure design of ratio of precision in each cylinder 2.
The assemble method of < crank mechanism >
Then, the assemble method for the crank mechanism 12 for including above-mentioned crank axle 14 is illustrated.Fig. 8 is according to each work
Sequence indicates the flow chart of the assemble method of crank mechanism 12, and Fig. 9 to Figure 15 is the crank schematically shown in each step of Fig. 8
The perspective view of the assembling situation of mechanism 12.
Firstly, assembling constitutes a component, that is, first component 14a (step S1) of crank axle 14.In the present embodiment,
By the interconnected main part 14a1 with the first crank-pin 18c and with the addition department of the first crank-pin 18a and 18b
14a2 and assemble first component 14a.At this point, from end on observation, with first crank-pin 18a, 18b, 18c respectively along axle journal 16
The mode configured to circumferential direction (120 degree of interval) equally spaced from each other assembles.
Then, to first crank-pin 18a, 18b, 18c of the first component 14a assembled in step sl via bearing 36a,
36b, 36c install corresponding with low-pressure side cylinder first connecting rod 34a, 34b, 34c (step S2) respectively.Then, to the first crank
Bearing 54,56 (step S3) are inserted into the two sides for selling 18a, 18b, 18c.It has been shown in FIG. 9 in step S2 and S3 to existing in this way
Assembled in step S1 the first component 14a installation first connecting rod 34a, 34b, 34c, bearing 36a, 36b, 36c, 54,56 and formed
Package.
Then, as shown in Figure 10, antetheca 10a2 (step S4) is installed to the one end of first component 14a.As referring to Fig. 2 institute
As description, antetheca 10a2 is the component that low-pressure side crank box 10a is constituted together with cartridge 10a1.Antetheca 10a2's
Central part is provided with through-Penetration portion 11, by being inserted into one end of first component 14a in the through-Penetration portion 11, thus in through-Penetration portion 11
Inner wall be fitted into the mode of periphery of bearing 54 and install.
Then, as shown in figure 11, the package for being further fitted with antetheca 10a2 is inserted in the cylinder of low-pressure side crank box 10a
Shape component 10a1 (step S5).The peripheral part 57 of antetheca 10a2 structure in a manner of with the integration of the flange part 53 of cartridge 10a1
At.By being inserted into cricoid seal member 55 between the flange part 53 of low-pressure side crank box 10a and the peripheral part in next door 52, from
And ensure the air-tightness of low-pressure side crank box 10a.
Then, as shown in figure 12, next door 52 (step S6) is further installed to package.As described with reference to Figure 2 that
Sample, next door 52 are the plate-shaped members for low-pressure side crank box 10a Yu high-pressure side crank box 10b to be isolated.The center of next door 52
Portion is provided with through hole 52a, carries out group by the one end for the first component 14a being inserted into package in through hole 52a
Dress.At this point, bearing 56 is embedded in through hole 52a, so that the one end of first component 14a be enable to rotate twelve Earthly Branches via bearing 56
It supports in next door 52.
Then, as shown in figure 13, the second crank to the second component 14b separately prepared relative to low-pressure side crank mechanism
18d is sold, combines second connecting rod 34d (step S7) corresponding with high-pressure side cylinder via bearing 36d.Moreover, being combined with the second company
The second component 14b of bar 34d relative in the low-pressure side crank mechanism assembled in the process to before step S6 from next door
(step S8) is installed one end of first component 14a 52 through hole 52a protruding to the outside.At this point, by being set to
The fixation hole 32 of second component 14b is inserted into bolt 35 to be fixed.
Then, as shown in figure 14, the crank mechanism from the side second component 14b to the low-pressure side for being equipped with second component 14b
It installs high-pressure side crank box 10b (step S9).In high-pressure side, the flange part 56 of crank box 10b is circumferentially provided with multiple bolts
Hole is installed by being inserted into fixing bolt 58 in each bolt hole relative to the next door 52 of the side low-pressure side crank box 10a.Figure 15
It is the perspective view for indicating the crank mechanism 12 completed by the assemble method of Fig. 7.
In addition, in the crank mechanism 14 assembled as such, by dismantling high-pressure side crank box 10b, so as to be easy
Ground is close to the second component 14b in crank axle 14.Therefore, in such as maintenance of crank axle 14 without decomposing behaviour on a large scale
Also it is able to carry out the replacement operation of second component 14b, repairs.
As described above, in the crank axle 14 of above-mentioned crank mechanism 12, the of the crank axle 14 is being constituted
It, being capable of spirit due to can separately set eccentricity of the crank-pin relative to axle journal in one component and second component
Path increment that can rotatably with each connecting rod of each crank pin connection is set livingly.As a result, in reciprocating compressor, pass through change
The stroke amount of more piston and be able to carry out the previous high pressure design of ratio of precision.
Industrial applicibility
At least one embodiment of the invention can be used in the reciprocal of the multiple cylinders that can generate compressed gas
The crank axle and reciprocating compressor of formula compressor.
Claims (9)
1. a kind of crank axle of reciprocating compressor, in the reciprocating compression with the multiple cylinders that can generate compressed gas
In machine, used in the crank mechanism for converting rotational motion to move back and forth,
The crank axle of the reciprocating compressor has:
The first component comprising the axle journal of crank box can be rotatably supported at and can be connected for first connecting rod first
Crank-pin, wherein the first connecting rod is corresponding with the first cylinder of the multiple cylinder is contained in；And
Second component comprising the second crank-pin that can be connected for second connecting rod, wherein the second connecting rod and be contained in institute
The second cylinder for stating multiple cylinders is corresponding,
The first component and the second component are configured to axially link each other.
2. the crank axle of reciprocating compressor according to claim 1, which is characterized in that
First crank-pin and second crank-pin have eccentricity different from each other relative to the axle journal.
3. the crank axle of reciprocating compressor according to claim 1 or 2, which is characterized in that
The second component has the end for the first component can be along the insertion hole being axially inserted into.
4. the crank axle of reciprocating compressor according to any one of claim 1 to 3, which is characterized in that
The first component is provided with multiple first crank-pins,
Each first crank-pin is equally spaced configured along the circumferential direction of the axle journal.
5. the crank axle of reciprocating compressor according to claim 4, which is characterized in that
The first component has:
Main part including the axle journal；And
It is provided at least part of addition department of first crank-pin.
6. the crank axle of reciprocating compressor according to claim 5, which is characterized in that
The addition department has cylindrical shape,
The main part is by being inserted into the hollow space of the addition department from the opposite side of the second component, to make the master
Body portion and the addition department are constituted in a manner of it can link.
7. a kind of reciprocating compressor, which is characterized in that have reciprocating compressor described in any one of claims 1 to 6
Crank axle.
8. reciprocating compressor according to claim 7, which is characterized in that
First cylinder is low-pressure side cylinder,
Second cylinder is the high-pressure side cylinder for further compressing the discharge gas of the low-pressure side cylinder.
9. reciprocating compressor according to claim 7 or 8, which is characterized in that
The crank box, which has, is divided into the inner space of the crank box and first cylinder and second cylinder difference
Corresponding first space and the next door of second space,
The axle journal can be rotatably supported at the through hole formed in the next door.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-040564 | 2018-03-07 | ||
| JP2018040564A JP2019157636A (en) | 2018-03-07 | 2018-03-07 | Crank shaft of reciprocation type compressor and reciprocation type compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110242539A true CN110242539A (en) | 2019-09-17 |
Family
ID=67882981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910168816.8A Pending CN110242539A (en) | 2018-03-07 | 2019-03-06 | The crank axle and reciprocating compressor of reciprocating compressor |
Country Status (2)
| Country | Link |
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| JP (1) | JP2019157636A (en) |
| CN (1) | CN110242539A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4095378B1 (en) * | 2021-05-25 | 2024-08-07 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Piston compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1336488A (en) * | 2000-07-28 | 2002-02-20 | 三洋电机株式会社 | reciprocating compressor |
| CN1971047A (en) * | 2005-11-23 | 2007-05-30 | 乐金电子(天津)电器有限公司 | Double-capacity reciprocating compressor and refrigerator equipped with the above-mentioned compressor |
| CN104074706A (en) * | 2013-03-29 | 2014-10-01 | 日立汽车系统株式会社 | Reciprocating compressor |
| CN104100493A (en) * | 2013-04-08 | 2014-10-15 | 株式会社神户制钢所 | Compressor |
| CN105909494A (en) * | 2015-02-20 | 2016-08-31 | 株式会社神户制钢所 | Reciprocating compressor, compression section unit, and maintenance method of reciprocating compressor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4059366A (en) * | 1976-03-26 | 1977-11-22 | Tecumseh Products Company | Thermal overload protective system |
| JP2005214076A (en) * | 2004-01-29 | 2005-08-11 | Hitachi Ltd | Reciprocating compressor |
| JP2016050526A (en) * | 2014-08-29 | 2016-04-11 | 日立工機株式会社 | air compressor |
| WO2016075569A1 (en) * | 2014-11-10 | 2016-05-19 | Koninklijke Philips N.V. | Connector for a compressor assembly |
-
2018
- 2018-03-07 JP JP2018040564A patent/JP2019157636A/en active Pending
-
2019
- 2019-03-06 CN CN201910168816.8A patent/CN110242539A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1336488A (en) * | 2000-07-28 | 2002-02-20 | 三洋电机株式会社 | reciprocating compressor |
| CN1971047A (en) * | 2005-11-23 | 2007-05-30 | 乐金电子(天津)电器有限公司 | Double-capacity reciprocating compressor and refrigerator equipped with the above-mentioned compressor |
| CN104074706A (en) * | 2013-03-29 | 2014-10-01 | 日立汽车系统株式会社 | Reciprocating compressor |
| CN104100493A (en) * | 2013-04-08 | 2014-10-15 | 株式会社神户制钢所 | Compressor |
| CN105909494A (en) * | 2015-02-20 | 2016-08-31 | 株式会社神户制钢所 | Reciprocating compressor, compression section unit, and maintenance method of reciprocating compressor |
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|---|---|
| JP2019157636A (en) | 2019-09-19 |
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