CN108443148A - Multi-cylinder rotation compressor - Google Patents
Multi-cylinder rotation compressor Download PDFInfo
- Publication number
- CN108443148A CN108443148A CN201810539733.0A CN201810539733A CN108443148A CN 108443148 A CN108443148 A CN 108443148A CN 201810539733 A CN201810539733 A CN 201810539733A CN 108443148 A CN108443148 A CN 108443148A
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- Prior art keywords
- shell
- element parts
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- mentioned
- cylinder
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/23—Manufacture essentially without removing material by permanently joining parts together
- F04C2230/231—Manufacture essentially without removing material by permanently joining parts together by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Abstract
The invention discloses a kind of Multi-cylinder rotation compressors, in its cylindrical shell sealed, stored the stator by being fixed on shell and electric motor that the rotor that is rotated in diameter of stator bore is constituted, and the compression mechanical part driven by above-mentioned electric motor, compression mechanism section at least by：2 or more cylinders of each self-configuring compression chamber, the middle partition board configured between above-mentioned cylinder, seal the base bearing and supplementary bearing at above-mentioned compression chamber trepanning end, the element parts for the bent axle composition fixed with above-mentioned rotor and be slidably matched with above-mentioned base bearing and above-mentioned supplementary bearing are constituted, and the peripheral part of the above-mentioned element parts of at least two is fixedly welded in the inner peripheral portion of above-mentioned cylindrical shell.Multi-cylinder rotation compressor according to the present invention can significantly promote the resistance to disengaging intensity of compression mechanical part by the way that the peripheral part of at least two element parts of cylinder, middle partition board, base bearing and supplementary bearing to be fixedly welded in the inner peripheral portion of cylindrical shell 2a.
Description
Technical field
The present invention relates to compressor fields, in particular to a kind of Multi-cylinder rotation compressor.
As the compressor for the electric vehicle and air-conditioning etc. for restricting Future Development, frequently with multi cylinder rotary compression
Machine, the present invention are related with raising seal casinghousing and the fixation reliability of compression mechanical part.
Background technology
The rotary compressor being carried on electric automobile air conditioner, in the superelevation that the vibration of automobile fierceness and variable-frequency motor generate
Under fast service condition, excessive load acts on the fixed part of compression mechanical part and shell, easily causes compression mechanical part from shell
It is detached from.
In order to prevent global greenhouse effect, the developed country including China all plans from previous gasoline automobile
Go to electric vehicle.It is main to use opening screw compressor as the air-conditioning of automobile.Compared with screw compressor, it is in
The duplex-cylinder rotary compressor for having actual achievement all the year round with fields such as air-conditionings has advantage in efficiency and reliability etc..
According to the assembling design of previous rotary compressor, the peripheral part hot pressing of compression mechanical part is assembled into cylinder
In steel plate shell body in circumference, these are subjected to several spot welding from hull outside, to which compression mechanical part is fixed on shell inner circumferential
Portion.The material for constituting the element parts of compression mechanical part, is considered from wearability and processing type, by casting or powder metallurgy structure
At.
But the electric arc spot welding of steel plate shell and casting or powder metallurgy, the electric arc spot welding with common steel plate and steel plate
It compares, there is weld strengths the problem of disadvantage.Rotary compressor used for automobile air conditioning, because often occurring up and down
Intense vibration, so needing to improve above-mentioned weld strength.
Previous shell inner peripheral portion and compression mechanical part, which weld relevant fixed design, to be had：Fixed main shaft holds the side of peripheral part
The method of partition board in method, the method for fixation external diameter of cylinder, fixation.In order to reduce to the load of compression mechanical part, on motor top
The method of additional 3rd bearing is also well-known.But these above-mentioned methods, fixed effect are unsatisfactory.
Invention content
The present invention is directed to solve one of above-mentioned technical problem in the prior art at least to a certain extent.For this purpose, this hair
It is bright to propose a kind of Multi-cylinder rotation compressor, by the outer of at least two element parts of cylinder, base bearing, supplementary bearing and middle partition board
Circumference is fixedly welded in the inner peripheral portion of above-mentioned cylindrical shell.
Multi-cylinder rotation compressor according to the ... of the embodiment of the present invention in the cylindrical shell of sealing, has been stored by being fixed on shell
On the electric motor that constitutes of stator and the rotor that is rotated in diameter of stator bore, and the compressor that is driven by above-mentioned electric motor
Structure portion, compression mechanism section, at least by：2 or more cylinders of each self-configuring compression chamber, in configuring between above-mentioned cylinder
Partition board seals the base bearing and supplementary bearing at above-mentioned compression chamber trepanning end, fixed with above-mentioned rotor and with above-mentioned base bearing and above-mentioned
The element parts for the bent axle composition that supplementary bearing is slidably matched are constituted, the peripheral part of the above-mentioned element parts of at least two, and welding is solid
Due in the inner peripheral portion of above-mentioned cylindrical shell.According to some embodiments of the present invention, it is being fixedly welded on above-mentioned cylindrical shell
Between above-mentioned element parts, peripheral part size is different.
Optionally, between being fixedly welded on the above-mentioned element parts of above-mentioned cylindrical shell, these welding numbers and weldering
It is identical or different to connect position.
Optionally, the gyratory directions of above-mentioned electric motor are horizontal direction or vertical direction.
Multi-cylinder rotation compressor according to the ... of the embodiment of the present invention includes：Shell；Electric motor, the electric motor setting exist
In the shell；Compression mechanical part, the compression mechanical part is arranged in the shell and is driven by the electric motor, described
Compression mechanical part is made of elements parts such as at least two cylinders, middle partition board, base bearing and supplementary bearings；Wherein, at least two
The inner peripheral surface of the peripheral surface and the shell of the element parts is welded and fixed.
Further, at least two element parts being welded and fixed with the inner peripheral surface of the shell include key element
Parts and auxiliary element parts, the outer diameter of the key element parts are more than the outer diameter of the auxiliary element parts.
Further, the peripheral surface of the key element parts is bonded with the inner peripheral surface of the shell, the auxiliary element
The peripheral surface of parts being radially spaced apart in the shell with the inner peripheral surface of the shell.
Specifically, the gap between the peripheral surface and the inner peripheral surface of the shell of the auxiliary element parts is that C meets pass
It is formula：0.1mm≤C≤0.2mm.
According to some embodiments of the present invention, at least two elements zero being welded and fixed with the inner peripheral surface of the shell
Component includes key element parts and auxiliary element parts, the main weldering point of the key element parts and the shell to the electricity
The distance at the center of motor is moved as L1, the distance of auxiliary solder joint to the main weldering point of the auxiliary element parts and the shell is
L2, L1, L2 meet relational expression：L1≥L2.
According to some embodiments of the present invention, at least two elements zero being welded and fixed with the inner peripheral surface of the shell
Component includes key element parts and auxiliary element parts, has multiple main welderings between the key element parts and the shell
Point has multiple auxiliary solder joints, multiple main weldering points and multiple auxiliary welderings between the auxiliary element parts and the shell
Point corresponds respectively in the axial direction of the shell.
According to some embodiments of the present invention, at least two elements zero being welded and fixed with the inner peripheral surface of the shell
Component includes key element parts and auxiliary element parts, has multiple main welderings between the key element parts and the shell
Point has multiple auxiliary solder joints, in terms of one end of the shell, multiple masters between the auxiliary element parts and the shell
Solder joint and multiple auxiliary solder joint interlaced arrangements in the circumferential direction of the shell.
Optionally, the main weldering point and the auxiliary solder joint are three, and the adjacent main weldering point and the auxiliary solder joint
Spacing be 60 °.
According to some embodiments of the present invention, at least two elements zero being welded and fixed with the inner peripheral surface of the shell
Component includes key element parts and auxiliary element parts, has multiple main welderings between the key element parts and the shell
There are point multiple auxiliary solder joints, the quantity of the main weldering point to be more than the auxiliary weldering between the auxiliary element parts and the shell
The quantity of point, in terms of one end of the shell, the axial direction of main weldering point described in a portion and the auxiliary solder joint in the shell
Upper correspondence, main weldering point described in another part and auxiliary solder joint interlaced arrangement in the circumferential direction of the shell.
The beneficial effects of the invention are as follows：
(1) fixing means of shell and compression mechanical part more than several times can be improved using at least two-part fixing means
The fixing intensity of compression mechanical part.
(2) be fixed on the outer diameter and size of two element parts on shell, it is slightly different by designing, can with
Toward the same, the aligning precision of maintenance compression mechanical part and electric motor.
(3) it is not only duplex-cylinder rotary compressor, can also be applied on the rotary compressor of three cylinders or more.
(4) it in addition to Horizontai rotary compressor, can also be applied in vertical rotary compressor.
(5) previous equipment is not changed, can be implemented yet.
Description of the drawings
Fig. 1 is 1 schematic diagram of embodiment of the Multi-cylinder rotation compressor of the present invention；
Fig. 2 is the solder joint arrangement form schematic diagram of the Multi-cylinder rotation compressor of the present invention；
Fig. 3 is 2 schematic diagram of embodiment of the Multi-cylinder rotation compressor of the present invention；
Fig. 4 is 3 schematic diagram of embodiment of the Multi-cylinder rotation compressor of the present invention；
Fig. 5 is 4 schematic diagram of embodiment of the Multi-cylinder rotation compressor of the present invention；
Fig. 6 is 5 schematic diagram of embodiment of the Multi-cylinder rotation compressor of the present invention；
Fig. 7 is 6 schematic diagram of embodiment of the Multi-cylinder rotation compressor of the present invention.
Reference numeral：
1- duplex-cylinder rotary compressors, 2- shells, 2a- cylindrical shells, 2b- shells end plate, 2c- shells end plate, 3- exhaust pipes,
4- suction holes, 5- electric motors, 5a- stators, 5b- rotors, 5c- electrical-coils, 6- air gaps, 8- compression mechanical parts, 10- main shafts
It holds, partition board, 12a- pads, the second cylinders of 13-, 13a- welderings in 10a- pads, the first cylinders of 11-, 11a- pads, 12-
Contact, 14- supplementary bearings, 15- bent axles, 18- screws, 25- stabilizer blades, the gaps C-.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indicating or implies relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more this feature.In the description of the present invention,
The meaning of " plurality " is at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be to be electrically connected or can communicate with one another；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the interaction relationship of connection or two elements inside two elements.For the ordinary skill in the art,
The specific meanings of the above terms in the present invention can be understood according to specific conditions.
Multi-cylinder rotation compressor according to the ... of the embodiment of the present invention is described in detail with reference to Fig. 1-Fig. 7.
Multi-cylinder rotation compressor according to the ... of the embodiment of the present invention has been stored in the cylindrical shell 2a of sealing by being fixed on
The electric motor 5 of stator 5a and the rotor 5b compositions rotated in stator 5a internal diameters on shell 2, and driven by electric motor 5
Dynamic compression mechanical part 8, compression mechanical part 8 at least by：It is each configured between 2 or more cylinders of compression chamber, cylinder and matches
The base bearing 10 and supplementary bearing 10 of the middle partition board 12, seal compression chamber trepanning end set, with rotor 5b fix and with base bearing 10 and
The element parts that the bent axle 15 that supplementary bearing 14 is slidably matched forms are constituted, and the peripheral part welding of at least two element parts is solid
Due in the inner peripheral portion of cylindrical shell 2a.
Multi-cylinder rotation compressor according to the ... of the embodiment of the present invention, by cylinder, base bearing 10, supplementary bearing 14 and middle partition board 12
The peripheral part of at least two element parts is fixedly welded in the inner peripheral portion of cylindrical shell 2a, can significantly promote compression mechanism
The resistance to disengaging intensity in portion 8.
In some embodiments, between being fixedly welded on the element parts of cylindrical shell 2a, peripheral part size is not
Together.
Optionally, between being fixedly welded on the element parts of cylindrical shell 2a, these welding numbers and welding position
It is identical or different.
Optionally, the gyratory directions of electric motor 5 are horizontal direction or vertical direction, when the gyratory directions of electric motor 5
For horizontal direction when, Multi-cylinder rotation compressor is Horizontai rotary compressor, when electric motor 5 gyratory directions be vertical direction
When, Multi-cylinder rotation compressor is vertical rotary compressor.
Embodiment 1：
Duplex-cylinder rotary compressor 1 shown in FIG. 1, which has, is fixed on the electric motor 5 of 2 inner peripheral portion of seal casinghousing, by electronic electricity
The compression mechanical part 8 that machine 5 drives.Compression mechanical part 8 by the first cylinder 11 and the second cylinder 13, compression in above-mentioned cylinder is set
Middle partition board 12 among chamber 11y and compression chamber 13y, the base bearing 10 and supplementary bearing for being fixed on above-mentioned two compression chamber trepanning end
14, driving 15 structure of bent axle that is configured at the action parts of above-mentioned compression chamber and is slidably matched with base bearing 10 and supplementary bearing 14
At rotor 5b is fixed on bent axle 15.
Compression mechanical part 8, advance precision aligning first compression chamber 11y and second compression chamber 13y.Thereafter, with compression
On the basis of chamber 11y, aligning base bearing 10, bent axle 15 and supplementary bearing 14 complete the aligning of compression mechanical part 8 using five groups of screws 18
Assembling.Thereafter, the internal diameter of rotor 5b is hot-pressed onto on bent axle 10.
The DC frequency change type electrics motor 5 of rotational speed can freely be changed, peripheral part is round, and cylinder is fixed to by hot pressing
Stator 5a on shell 2a internal diameters, the rotor 5b being fixed on bent axle 15, in the electrical-coil 5c structures of stator 5a inner diameter channel spirals
At.
Between stator 5a internal diameters and rotor 5b outer diameters, it is set with the air gap 6 of 0.4~0.5mm.It is related according to cylindrical shell 2a
Compression mechanical part 8 and stator 5a same core degree and cylindricity etc. foozle, there is the difference gap, namely fixed of air gap 6
It is proportional to the size of the error after the core shift of sub- 5a internal diameters relative rotor 5b, increase motor magnetic force change, to compression mechanical part
8 and the vibration of compressor entirety have deleterious effect.Therefore, cylindrical shell 2a, the assembly precision of compression mechanical part 8 and welding are strong
Degree, is all directly related to the size in above-mentioned gap 6, influences the performance of compressor.
Next, being based on Fig. 1, the assemble method of shell 2, electric motor 5 and compression mechanical part 8 is illustrated.Consolidated
The rotor 5b and stator 5a being scheduled on compression mechanical part 8, maintains presetting air gap 6, is maintained in dedicated assembling fixture.So
Afterwards, the internal diameter for the cylindrical shell 2a for being heated to hundreds of degrees Celsius, according to the peripheral part of stator 5a, compression mechanical part 8
After being sequentially inserted into of the peripheral part of one cylinder 11, stator 5a and compression mechanical part 8 are received into cylindrical shell 2a.
Thereafter, because internal diameter caused by the temperature of cylindrical shell 2a declines is shunk, the peripheral part of stator 5a and the first cylinder
11 peripheral part is maintained on the internal diameter of cylindrical shell 2a, and hot pressing is set up.In the design of embodiment 1, compression mechanical part 8
In, the largest outside diameter of the first cylinder 11 is almost identical as the outer diameter of stator 5a.
That is, cylindrical shell 2a, intensity keep the outer diameter of the stator 5a of high rigidity to be assembled by above-mentioned hot pressing, cylinder
Shell 2a and stator 5a are precisely machined, and the outer diameter intensity of the first cylinder 11 keeps weak rigidity.For example, cylindrical shell 2a and stator
The weld strength of 5a is higher than the weld strength of cylindrical shell 2a and the first cylinder 11.In engineering, aggravate to adjust by air gap
Core prevents the deviation of air gap 6 excessive.
Next, maintain air gap 6, (1) since the peripheral part of cylindrical shell 2a, the inner circumferential of electric arc spot welding cylindrical shell 2
The peripheral part in portion and the first cylinder 11, (2) thereafter, the periphery of the inner peripheral portion of electric arc spot welding cylindrical shell 2a and the second cylinder 13
Portion.That is, embodiment 1, its main feature is that, two element parts of electric arc spot welding.It is well known that being carried out at the same time multiple electric arcs
Spot welding, aligning error will become smaller.
Fig. 2 indicates the pad of these electric arc spot weldings.The position of the electric arc spot welding of first cylinder 11 and the second cylinder 13 is
The vertex of each cylinder peripheral part and from peak to 2 points of 120 ° of distance, therefore, the peripheral part of each cylinder has 3 welding
Point.
As a result, the compression mechanical part 8 of embodiment 1, by the first cylinder 11 and the second cylinder 13, cylindrical shell 2a's
Internal diameter is separated into 2 row, remains total 6 pads.Fig. 2 is the first cylinder 11 seen from the side of the base bearing 10 of Fig. 1
Sectional view, the pad of the first cylinder 11 and the second cylinder 13 is expressed as 11a and 13a, 11b and 13b, 11c and 13c.
Next, in the both ends open portion of the cylindrical shell 2a taken off from assembling fixture, welded case end plate 2b and
Shell end plate 2c.As a result, electric motor 5 and compression mechanical part 8 are received into the shell 2 of sealing.Thereafter, welding is as attached
Belong to two groups of stabilizer blades 25 of parts.
Here, in addition to the first cylinder 11, the effect to welding the second cylinder 13 illustrates.In Fig. 1, relative to acting on
The vibration of the centre of gyration of rotor 5b, the first cylinder 11 since the center of rotor 5b, positioned at L1 distances and positioned at L1+L2 away from
From the second cylinder 13 caused by compression mechanical part 8 retentivity, at a distance from L1, uniquely rely on the first cylinder keep
The previous design of power is compared, and it is open-and-shut to have several times~10 times retentivity.
In embodiment 1, the design shape of the first cylinder 11 and the second cylinder 13 is unified, much less, this is standardization institute
It is expected that reach, it is however noted that, the outer diameter of the first cylinder 11 of the benchmark parts relative to assembling aligning, if the
The outer diameter of two cylinders 13 is big, then the second cylinder 13 contacted with cylindrical shell 2a will become benchmark parts.That is, with
Originally the design basis planned is different, so the aligning precision of air gap 6 can change.
In Fig. 1, in order to deepen this points for attention, indicate that the outer diameter of the first cylinder 11 and the second cylinder 13 is poor with symbol C.
The size of C, in most cases, within the scope of 0.1~0.2mm be do not have it is influential.The gap of this degree, even if second
Occur between cylinder 13 and cylindrical shell 2a, the intensity of electric arc spot welding will not be influenced.This design basis is common to following complete
Portion's embodiment.
Embodiment 1, the welding of cylindrical shell 2a and compression mechanical part 8 using electric arc spot welding, but also have other welding hands
Method also has the embodiment of laser welding with 2 fixed element parts of cylindrical shell if not casting.
Embodiment 2：
The pad of 11 and second cylinder 13 of the first cylinder shown in Fig. 2 of embodiment 1, in two cylinders, pad
Angle is identical, and still, embodiment 2 shown in Fig. 3, design is, relative to pad 11a, 11b, 11c of the first cylinder 11,
The pad of second cylinder 13 is configured to the almost middle position of 11 pad of the first cylinder.
Therefore, in example 2, each solder joint is disperseed with 60 °.Compared with Example 1, in example 2, when acting on
When the direction of vibration dispersion of compressor, there are the weld strengths of compression mechanical part 8 to become strong effect.
Embodiment 3：
In Fig. 4, the base bearing 10 of compression mechanical part 8 is regard as benchmark parts, by the way that its 6 spot welding of peripheral part is connected to circle
The inner peripheral portion of column shell 2a, is fixed.Moreover, by the way that the peripheral part 3 for being used as the middle partition board 12 of auxiliary spare part is spot welded
To the inner peripheral portion of cylindrical shell 2a, it is fixed.Therefore, the pad of base bearing 10 be 10a, 10b, 10c, 10d, (10e),
The pad of (10f), middle partition board 12 are 12a, 12b, (12c).
The interval of the pad of base bearing 10 and middle partition board 12 is 60 ° and 120 ° respectively, in the master as benchmark parts
In the pad of bearing 10,3 are consistent with as the pad of middle partition board 12 of auxiliary spare part.In the same manner as in Example 1, phase
For the outer diameter of base bearing 10, the outer diameter of middle partition board 12 designs smaller.It is opened from the viewpoint of the fixation reliability of compression mechanical part 8
It sees, as described in Example 3, L1 sizes (Fig. 1) can be designed small parts and be selected as benchmark parts, this is to defeated
It is beneficial to go out for high-power compressor.
Embodiment 4：
In Fig. 5, the peripheral part of the base bearing 10 as benchmark parts is connected to the inner circumferential of cylindrical shell 2a by 6 spot welding
Portion is fixed.Moreover, by the way that 3 spot welding of peripheral part for being used as the second cylinder 13 of auxiliary spare part is connected to cylindrical shell 2a
Inner peripheral portion, be fixed.The pad of base bearing 10 is 10a, 10b, 10c, 10d, (10e), (10f), the second cylinder 13
Pad is 13a, 13b, (13c).Therefore, the quantity and angle of pad are same as Example 3.
Compared with Example 3, between base bearing 10 and the second cylinder 13, the first cylinder 11 and middle partition board 12 are clipped, so,
L2 shown in FIG. 1 becomes large-sized, and compared with vibration of compressor, can further increase the fixing intensity of compression mechanical part 8.
Compared with embodiment 1,3,4, entirely, two structures are selected from the element parts for constituting compression mechanical part 8
At parts as benchmark parts and auxiliary spare part, but one benchmark parts of selection and two auxiliary spare parts are also
Do not have influential.
Embodiment 5：
Fig. 6 is that the rotating shaft of bent axle 15 in the duplex-cylinder rotary compressor 1 using embodiment 1 rotates pressure as vertical twin-tub
Contracting machine.Above-described embodiment invention disclosed is equally applicable on vertical double rotary compressor.
Embodiment 6：
Fig. 7 is that embodiment 3 is expanded the design being applied on three cylinder rotary compressors.Compression mechanical part 8 is by main shaft
10 and three cylinders 11,13,16 are held, the two middle partition boards 12,15 and supplementary bearing 14 that these cylinders are divided are constituted.This sets
Meter is to regard base bearing 10 as benchmark parts, regard middle partition board 12 as auxiliary spare part, is respectively provided with 6 pads.
Shown in referring to Fig.1, Multi-cylinder rotation compressor according to the ... of the embodiment of the present invention may include：Shell 2, electric motor 5
With compression mechanical part 8.
Wherein, shell 2 includes cylindrical shell 2a and is arranged shell end plate 2b, 2c at the both ends cylindrical shell 2a, shell 2
Lower section is provided with two groups of stabilizer blades 25.
Electric motor 5 and compression mechanical part 8 are arranged in shell 2, specifically, electric motor 5 and compression mechanical part 8
Be arranged in cylindrical shell 2a, and compression mechanical part 8 is driven by electric motor 5, compression mechanical part 8 by least two cylinders,
The elements parts such as middle partition board 12, base bearing 10 and supplementary bearing 14 form.Wherein, the peripheral surface of at least two element parts with
The inner peripheral surface of shell 2 is welded and fixed.
The peripheral part of the peripheral surface of element parts, that is, element parts described above, the inner peripheral surface of shell 2 is i.e. above
The inner peripheral portion of described cylindrical shell 2a.
By the way that the peripheral surface of at least two element parts of cylinder, middle partition board 12, base bearing 10 and supplementary bearing 14 is welded
It connects and is fixed on the inner peripheral surface of cylindrical shell 2a, can significantly promote the resistance to disengaging intensity of compression mechanical part 8.In other words, it adopts
With the fixing means of this at least two-part, the fixing intensity of compression mechanical part 8 more than several times can be improved.
Multi-cylinder rotation compressor described in the present invention is not only Fig. 1, Fig. 4-duplex-cylinder rotary compressor shown in fig. 6, also may be used
Can be not only Fig. 1, Fig. 4-Horizontai rotary compressor shown in fig. 5 to be the rotary compressor of three cylinder shown in Fig. 7 or more,
Can also be Fig. 6-vertical rotary compressors shown in Fig. 7.
In addition, not changing previous equipment, the present invention can also be implemented, improvement cost of the invention is relatively low, and advantageous
In the shortening production cycle.
Further, at least two element parts being welded and fixed with the inner peripheral surface of shell 2 include：Key element parts
(benchmark parts i.e. described above) and auxiliary element parts (auxiliary spare part i.e. described above), key element parts
Outer diameter is more than the outer diameter of auxiliary element parts, is thus conducive to the aligning precision for maintaining compression mechanical part 8 and electric motor 5.
In embodiment 1 and embodiment shown in fig. 65 shown in Fig. 1, the first cylinder 11 and the second cylinder 13 are elements zero
Component, and the first cylinder 11 is key element parts, and the second cylinder 13 is auxiliary element parts, and the outer diameter of the first cylinder 11 is big
In the outer diameter of the second cylinder 13.But when the outer diameter of the second cylinder 13 is more than the outer diameter of the first cylinder 11, the second cylinder 13 is
Key element parts, the first cylinder 11 are auxiliary element parts.
In embodiment 3 shown in Fig. 4, base bearing 10 and middle partition board 12 are element parts, and base bearing 10 is main
Element parts, middle partition board 12 are auxiliary element parts, and the outer diameter of base bearing 10 is more than the outer diameter of middle partition board 12.But in the middle
When the outer diameter of partition board 12 is more than the outer diameter of base bearing 10, middle partition board 12 is key element parts, and base bearing 10 is auxiliary element zero
Part.
In embodiment 4 shown in Fig. 5, base bearing 10 and the second cylinder 13 are element parts, and base bearing 10 is
Key element parts, the second cylinder 13 are auxiliary element parts, and the outer diameter of base bearing 10 is more than the outer diameter of the second cylinder 13.But
It is that, when the outer diameter of the second cylinder 13 is more than the outer diameter of base bearing 10, the second cylinder 13 is key element parts, and base bearing 10 is
Auxiliary element parts.
Further, the peripheral surface of key element parts is bonded with the inner peripheral surface of shell 2, the periphery of auxiliary element parts
Face being radially spaced apart in shell 2 with the inner peripheral surface of shell 2, to leave space for aligning operation.
Specifically, the gap between the peripheral surface and the inner peripheral surface of shell 2 of auxiliary element parts is that C meets relational expression：
0.1mm≤C≤0.2mm, such as C=0.15mm.Clearance C does not interfere with electric arc spot welding between auxiliary element parts and shell 2
Weld strength, and by the way that clearance C is arranged, be conducive to the aligning operation in assembling process, to reduce air gap 6, to promote pressure
The performance of contracting machine..
Shown in referring to Fig.1, the first cylinder 11 is key element parts, and the second cylinder 13 is auxiliary element parts, key element
For parts close to electric motor 5, the distance at main weldering point to the center of electric motor 5 of key element parts and shell 2 is L1, auxiliary
The distance at the auxiliary solder joint of element parts and shell 2 to the center of main weldering point is L2, and L1, L2 meet relational expression：L1 >=L2, thus
Be conducive to improve the fix tightly soundness of compression mechanical part 8 and shell 2.
Relative to it is traditional only at the position of 5 center L1 of electric motor setting be welded and fixed a little caused by fixation
For effect, main weldering point is set at the position of 5 center L1 of electric motor, apart from the position of 5 center L1+L2 of electric motor
After setting the auxiliary solder joint of place's setting, fixation of the compression mechanical part 8 in shell 2 can be made relatively reliable.Increase L2's in a certain range
Length is conducive to the fixing intensity for improving compression mechanical part 8.
It should be noted that described above, " " center " of electric motor 5 refers to the center of rotor 5b.
Shell 2 has multiple main weldering points to ensure the firmness of welding between key element parts and shell 2, auxiliary
There are multiple auxiliary solder joints between element parts and shell 2, in the embodiment shown in Figure 2, multiple main weldering points and multiple auxiliary welderings
Point corresponds respectively in the axial direction of shell 2.
Such as in fig. 2, main weldering point and auxiliary solder joint are three, three main weldering point 11a, 11b, 11c and three auxiliary solder joints
13a, 13b, 13c are corresponded respectively in the axial direction of shell 2, and the spacing of each adjacent two main weldering point is 120 °.And in Fig. 7
Shown in embodiment 6, main weldering point and auxiliary solder joint are six, and six main weldering points and six auxiliary solder joints are in the axial direction of shell 2
It corresponds respectively, and the spacing of each adjacent two main weldering point is 60 °.
In the embodiment shown in fig. 3, in terms of one end of shell 2, the week of multiple main weldering points and multiple auxiliary solder joints in shell 2
Thus upward interlaced arrangement is conducive to the fixation degree for enhancing compression mechanical part 8 and shell 2.
Optionally, main weldering point and auxiliary solder joint are three, three main weldering point 11a, 11b, 11c and three auxiliary solder joint 13a,
13b, 13c interlaced arrangement in the circumferential direction of shell 2, and the spacing of adjacent main weldering point and auxiliary solder joint is 60 °.
In embodiment 3 and embodiment shown in fig. 54 shown in Fig. 4, the quantity of main weldering point is more than the quantity of auxiliary solder joint,
In terms of one end of shell 2, a portion main weldering point is corresponding in the axial direction of shell 2 with auxiliary solder joint, another part main weldering point with
Auxiliary solder joint interlaced arrangement in the circumferential direction of shell 2.
Such as in Fig. 4, the quantity of main weldering point is six, i.e. 10a, 10b, 10c, 10d, 10e (not shown), 10f
The quantity of (not shown), six spaced 60 ° of main weldering points, auxiliary solder joint is three, i.e., 12a, 12b, 12c (do not show in figure
Go out), three spaced 120 ° of auxiliary solder joints, wherein three main weldering points and three auxiliary solder joints are corresponding in the axial direction of shell 2, in addition
Three main weldering points are separately positioned in the circumferential direction of shell 2 between two neighboring auxiliary solder joint.
Certainly, the quantity and set-up mode of main weldering point and auxiliary solder joint are not limited to the above embodiments, and can also be other forms,
Here it will not enumerate.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example
It is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms need not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in can be combined in any suitable manner.In addition, those skilled in the art can illustrate this
Different embodiments or examples described in book are engaged and are combined.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (13)
1. a kind of Multi-cylinder rotation compressor, which is characterized in that in the cylindrical shell of sealing, stored and determined by being fixed on shell
The electric motor that son and the rotor that is rotated in diameter of stator bore are constituted, and the compression mechanical part that is driven by above-mentioned electric motor,
Compression mechanism section at least by：
2 or more cylinders of each self-configuring compression chamber, the middle partition board configured between above-mentioned cylinder, seal above-mentioned compression chamber trepanning
The base bearing and supplementary bearing at end, the bent axle group fixed with above-mentioned rotor and be slidably matched with above-mentioned base bearing and above-mentioned supplementary bearing
At element parts constitute,
The peripheral part of the above-mentioned element parts of at least two is fixedly welded in the inner peripheral portion of above-mentioned cylindrical shell.
2. Multi-cylinder rotation compressor according to claim 1, which is characterized in that be fixedly welded on above-mentioned cylindrical shell
Between above-mentioned element parts, peripheral part size is different.
3. Multi-cylinder rotation compressor according to claim 1, which is characterized in that be fixedly welded on above-mentioned cylindrical shell
Between above-mentioned element parts, these welding numbers and welding position are identical or different.
4. Multi-cylinder rotation compressor according to any one of claim 1-3, which is characterized in that above-mentioned electric motor returns
It is horizontal direction or vertical direction to turn direction.
5. a kind of Multi-cylinder rotation compressor, which is characterized in that including：
Shell；
Electric motor, the electric motor are arranged in the shell；
Compression mechanical part, the compression mechanical part are arranged in the shell and are driven by the electric motor, the compressor
Structure portion is made of elements parts such as at least two cylinders, middle partition board, base bearing and supplementary bearings；
Wherein, the inner peripheral surface of the peripheral surface and the shell of at least two element parts is welded and fixed.
6. Multi-cylinder rotation compressor according to claim 5, which is characterized in that be welded and fixed with the inner peripheral surface of the shell
At least two element parts include key element parts and auxiliary element parts, the outer diameter of the key element parts
More than the outer diameter of the auxiliary element parts.
7. Multi-cylinder rotation compressor according to claim 6, which is characterized in that the peripheral surface of the key element parts with
The diameter of the inner peripheral surface fitting of the shell, the peripheral surface of the auxiliary element parts and the inner peripheral surface of the shell in the shell
It is spaced apart upwards.
8. Multi-cylinder rotation compressor according to claim 7, which is characterized in that the peripheral surface of the auxiliary element parts with
Gap between the inner peripheral surface of the shell is that C meets relational expression：0.1mm≤C≤0.2mm.
9. Multi-cylinder rotation compressor according to claim 5, which is characterized in that be welded and fixed with the inner peripheral surface of the shell
At least two element parts include key element parts and auxiliary element parts, key element parts and described
The distance at the main weldering point of shell to the center of the electric motor is L1, the auxiliary solder joint of the auxiliary element parts and the shell
Distance to the main weldering point is L2, and L1, L2 meet relational expression：L1≥L2.
10. Multi-cylinder rotation compressor according to claim 5, which is characterized in that solid with the inner peripheral surface welding of the shell
At least two fixed element parts include key element parts and auxiliary element parts, the key element parts and institute
Stating has multiple main weldering points between shell, has multiple auxiliary solder joints, Duo Gesuo between the auxiliary element parts and the shell
Main weldering point is stated to correspond respectively in the axial direction of the shell with multiple auxiliary solder joints.
11. Multi-cylinder rotation compressor according to claim 5, which is characterized in that solid with the inner peripheral surface welding of the shell
At least two fixed element parts include key element parts and auxiliary element parts, the key element parts and institute
Stating has multiple main weldering points between shell, has multiple auxiliary solder joints between the auxiliary element parts and the shell, from described
One end of shell sees, multiple main weldering points and multiple auxiliary solder joint interlaced arrangements in the circumferential direction of the shell.
12. Multi-cylinder rotation compressor according to claim 11, which is characterized in that the main weldering point and the auxiliary solder joint are equal
It it is three, and the spacing of the adjacent main weldering point and the auxiliary solder joint is 60 °.
13. Multi-cylinder rotation compressor according to claim 5, which is characterized in that solid with the inner peripheral surface welding of the shell
At least two fixed element parts include key element parts and auxiliary element parts, the key element parts and institute
Stating has multiple main weldering points between shell, has multiple auxiliary solder joints, the master between the auxiliary element parts and the shell
The quantity of solder joint be more than the auxiliary solder joint quantity, in terms of one end of the shell, main weldering point described in a portion with it is described
Auxiliary solder joint is corresponding in the axial direction of the shell, and main weldering point described in another part is with the auxiliary solder joint in the circumferential direction of the shell
Interlaced arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810539733.0A CN108443148A (en) | 2018-05-30 | 2018-05-30 | Multi-cylinder rotation compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810539733.0A CN108443148A (en) | 2018-05-30 | 2018-05-30 | Multi-cylinder rotation compressor |
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| Publication Number | Publication Date |
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| CN108443148A true CN108443148A (en) | 2018-08-24 |
Family
ID=63205809
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810539733.0A Pending CN108443148A (en) | 2018-05-30 | 2018-05-30 | Multi-cylinder rotation compressor |
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| JP2020090897A (en) * | 2018-12-03 | 2020-06-11 | 東芝キヤリア株式会社 | Rotary compressor, manufacturing method of rotary compressor and refrigeration cycle device |
| JP2020190218A (en) * | 2019-05-21 | 2020-11-26 | ダイキン工業株式会社 | Compressor |
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