CN104074764B - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- CN104074764B CN104074764B CN201410117515.XA CN201410117515A CN104074764B CN 104074764 B CN104074764 B CN 104074764B CN 201410117515 A CN201410117515 A CN 201410117515A CN 104074764 B CN104074764 B CN 104074764B
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- linking part
- inhalation port
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- side linking
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Abstract
nullThe present invention relates to rotary compressor (100)，There is in hermetic container (1) motor (2) and by motor (2) via bent axle (4) powered compression mechanism (3)，For being arranged on the first cylinder (8) in compression mechanism (3) and the second cylinder (9) separately connects the suction tube (43 of refrigerant gas、44)，Wherein，Cylinder (8、9) cylinder chamber (30 of cylindrical shape it is respectively provided with、31)，From cylinder chamber (30、31) extend radially through and be formed with inhalation port (50、51)，And this rotary compressor has link inhalation port (50、51) and suction tube (43、44) connecting piece (60、61)，Connecting piece (60、61) respective inhalation port side linking part (60a、Central shaft 61a) and suction tube side linking part (60b、Central shaft 61b) is compared eccentric in a direction close to each other.
Description
Technical field
The kind of refrigeration cycle of the refrigerating air conditioning device that the present invention relates to air conditioner or refrigerator etc. is made
The rotary compressor of the compression carrying out refrigerant gas.
Background technology
In the past, in the refrigerating air conditioning device of air conditioner or refrigerator etc., employ have multiple
The rotary compressor of cylinder.And, connect in the suction side of rotary compressor and have storage cold-producing medium
Accumulator, the cold-producing medium from accumulator passes through to be provided with each suction tube quilt with cylinder equal number
Suck the inhalation port of each cylinder.Accumulator has and secures container and the structure of each suction tube, storage
The end of each suction tube of long-pending device is connected the surface of the hermetic container being arranged at rotary compressor
On each connecting portion.
And, in this rotary compressor, when each suction tube is close to each other, say, that
The each connecting portion being arranged in hermetic container interval each other close to time, cause the fall of weld job
Low, thus seek not hinder the structure of weld job.Therefore, it is proposed to a kind of rotary compressor,
In hermetic container, make each connecting portion being mutually arranged on differing heights position along the week of hermetic container
To staggering, thus, compared with the situation using same position in the circumferential, it is possible to expand connecting portion
Interval (for example, referring to patent documentation 1) each other.In this rotary compressor, by expanding
Connecting portion interval each other, it is possible to expand each suction tube interval each other, improve weld job.
It addition, as improving the other technologies of weld job, exist and connect each gas by connecting piece
The inhalation port of cylinder and the rotary compressor (for example, referring to patent documentation 2) of each suction tube.?
In the case of assuming not use connecting piece, each suction tube is inserted each connecting portion of hermetic container, also
Require connect to each inhalation port of more inboard each cylinder.But, when using connecting piece, energy
The enough length correspondingly shortening suction tube self, thus it is directly inserted into airtight appearance with by each suction tube
The situation of the inboard of device each inhalation port of being connected to each cylinder is compared, it is possible to increase weld job
Property.
[prior art literature]
[patent documentation]
[patent documentation 1] Japanese Unexamined Patent Publication 9-079161 publication (page 3, Fig. 1～Fig. 3)
[patent documentation 2] Japanese Unexamined Patent Publication 2003-214370 publication (page 4, Fig. 1)
The rotary compressor recorded due to above-mentioned patent documentation 1 makes be arranged in hermetic container respectively to connect
Circumferentially stagger in the position meeting portion, so each suction tube is not the position overlapped each other from plan view
Put, and mutually stagger.Thus, whenever each suction tube being connected to each inhalation port of each cylinder,
It is inserted obliquely into the connecting portion of hermetic container from mutually different direction relative to hermetic container.Each suction
Enter pipe and be fixed on the container of accumulator as described above, thus there is following problem: protect
Hold container while each suction tube to be inserted the operation of the connecting portion of hermetic container from incline direction simultaneously
It is difficult.
It addition, the rotary compressor that patent documentation 1 is recorded does not uses, patent documentation 2 is such to be linked
Pipe, but suction tube is directly connected to the structure of inhalation port, thus this puts also to become and causes making
The main cause of the reduction of industry.
For improve such workability reduce, it is considered to increase hermetic container each connecting portion aperture and
Suction side bore and easily each suction tube is inserted each connecting portion and the method for each inhalation port.But
It is, in the case of being somebody's turn to do, each suction tube and the gap of each connecting portion and each suction tube and each inhalation port
Gap become big, thus can kainogenesis failure welding, the problem of poor sealing.
Incidentally, in the rotary compressor with multiple cylinder, free rotary ground supporting bent axle
Base bearing and supplementary bearing from being configured with clipping multiple cylinder up and down.This base bearing and supplementary bearing become
For the supporting-point of compressed gas load, along with the interval of base bearing and supplementary bearing is elongated, bent axle becomes
Easily flexure.In other words, along with the axially spaced-apart of each cylinder is elongated, bent axle becomes easily to bend.
When the bending deformation of bent axle 4 is big, crankshaft relative becomes big in the inclination of base bearing or supplementary bearing,
There is the reduction of the bearing reliability caused by one-side contact.For preventing the flexure of such bent axle,
Increase the diameter of axle and improve rigidity.But, when increase bent axle the diameter of axle time, axle slippage loss with
Correspondingly increase, bring the efficiency of compressor to reduce.Therefore, in the rotation with multiple cylinder
In compressor, seek to reduce the structure of the axially spaced-apart of each cylinder.
But, for reducing the axially spaced-apart of each cylinder it is necessary to reduce each connecting portion of hermetic container
Interval, thus when the workability welded to the inhalation port of each cylinder in view of each suction tube, contracting
There is the limit in the axially spaced-apart of little each cylinder.
Summary of the invention
The present invention researches and develops for solving above-mentioned problem, its objective is that obtaining high efficiency rotation presses
Contracting machine, it is possible to do not hinder hermetic container and suction tube weld job reduce the axial of each cylinder
Interval.
The rotary compressor of the present invention have in hermetic container motor and by motor via
Bent axle is powered compresses mechanism, for being arranged on the multiple cylinders in compression mechanism separately
Connecting the suction tube of refrigerant gas, wherein, multiple cylinders are respectively provided with the cylinder chamber of cylindrical shape,
Extending radially through from cylinder chamber and be formed with inhalation port, this rotary compressor has link inhalation port
With the connecting piece of suction tube, connecting piece has inhalation port side linking part and sucks tube side linking part,
For each in 2 connecting pieces that the cylinder adjacent with at least 2 in multiple cylinders connects, inhale
The central shaft of inbound port side linking part with suck tube side linking part central shaft compared with to close to each other
Direction eccentric.
In accordance with the invention it is possible to obtain high efficiency rotary compressor, it is possible to do not hinder hermetic container
With the weld job of suction tube reduce the axially spaced-apart of each cylinder.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of the rotary compressor 100 of embodiments of the present invention 1.
Fig. 2 is the enlarged drawing of the compression mechanism 3 of Fig. 1.
Fig. 3 is the sectional elevation of first cylinder 8 of Fig. 1.
Fig. 4 is rotary compressor 100 and the comparison diagram of conventional mode of embodiments of the present invention 1.
Fig. 5 is the inhalation port 50 of the rotary compressor 100 representing embodiments of the present invention 1
The figure of cross sectional shape.
Fig. 6 is the explanatory diagram of the flowing path section shape of the connecting piece 60 of Fig. 1, is to have concentrated from just
Sectional view that face is observed, from the sectional view of left sides, the figure of sectional view observed from right side.
Fig. 7 is the explanatory diagram of the variation of the flowing path section shape of the connecting piece 60 of Fig. 1, is collection
Suffer the sectional view from front observation, from the sectional view of left sides, from the sectional view of right side observation
Figure.
Fig. 8 is the amplification view of the line B-B along Fig. 3.
Fig. 9 is that suction tube side linking part 60b is circular and inhalation port side linking part 60a is non-
Round-shaped, make flow path cross sectional area and the inhalation port side linking part of suction tube side linking part 60b
The explanatory diagram of the connecting piece 60A that the flow path cross sectional area of 60a is identical, has concentrated and has observed from front
The stream that sectional view, expression are observed from right side from the figure of the flowing path section shape of left sides, expression
The figure of the figure of cross sectional shape.
Figure 10 is the horizontal stroke of the first cylinder 8 of the rotary compressor 100 of embodiments of the present invention 1
Sectional view, is the compression section angle, θ determined by suction side peristoma 50b and outlet side peristoma 70a
Explanatory diagram.
Figure 11 is the key position sectional view of the rotary compressor of embodiments of the present invention 2.
Figure 12 is the cross section shape of the inhalation port side linking part 60a making connecting piece 60 as comparative example
Shape is the elongated hole not having convex form as embodiment 1, is to represent to be pressed into this connecting piece 60
Cross sectional shape is the signal in the direction of the internal stress of the connecting piece 60 during the inhalation port 50 of elongated hole
Figure.
Figure 13 is the signal of the state representing that the internal stress by Figure 12 makes connecting piece 60 deform
Figure.
The explanation of reference
1 hermetic container, 1a main part, 1b upper dish container, 1d connecting portion, 1e connecting portion, 2
Motor, 2a stator, 2b rotor, 3 compression mechanisms, 4 bent axles, 4a main shaft part, 4b countershaft
Portion, 4c eccentric axial portion, 4d eccentric axial portion, 4e intermediate shaft portion, 5 central dividing plates, 5a the first leaf
Sheet, 6 base bearings, 7 supplementary bearings, 8 first cylinders, 8a inner circumferential, 8b blade groove, 9 second gas
Cylinder, 11a first piston, 11b the second piston, 11c periphery, 25 compressor discharge pipes, 26 glass
Glass terminal, 27 lead-in wires, 30 first cylinder chamber, 30a suction chamber, 30b discharge chambe, 31 second
Cylinder chamber, 40 accumulator, 41 containers, 42 inflow pipes, 43 suction tubes, 44 suction tubes, 50
Inhalation port, 50b suction side peristoma, 51 inhalation ports, 60 connecting pieces, 60A connecting piece, 60a
Inhalation port side linking part, 60b sucks tube side linking part, 60c long leg, 60d bending section,
60e convex form, 61 connecting pieces, 61a inhalation port side linking part, 61b sucks tube side linking part,
70 discharge port, 70a outlet side peristoma, 100 rotary compressors.
Detailed description of the invention
Embodiment 1
Fig. 1 is the longitudinal section of the rotary compressor 100 of embodiments of the present invention 1.Fig. 2 is
The enlarged drawing of the compression mechanism 3 of Fig. 1.Fig. 3 is the sectional elevation of first cylinder 8 of Fig. 1.Attached
Illustrate the rotary compressor of two cylinders with 2 cylinders, but the rotary compressor of the present invention
It is not limited to the structure of two cylinders, it would however also be possible to employ the structure of multi cylinder.
Rotary compressor 100 is to have motor 2 in hermetic container 1 and by motor 2 warp
Mechanism 3 is compressed by bent axle 4 is powered.
Hermetic container 1 has the knot making upper dish container 1b and main part 1a be integrally forming by welding
Structure.In the bottom of hermetic container 1, storage have to compression mechanism 3 sliding part be lubricated cold
Freeze machine oil (not shown).It addition, on the top of hermetic container 1, compressor discharge pipe 25 with
The inner space of hermetic container 1 is arranged communicatively.It addition, at the main part 1a of hermetic container 1
On be welded with the connecting portion being separately connected with the suction tube 43,44 of accumulator 40 described later
1d、1e。
Motor 2 such as makes variable speed by VFC etc., and has stator 2a and rotor
2b.Motor 2 is typically rotor 2b and uses the brushless DC motor of permanent magnet.But, also have
Use the situation of induction conductivity.Stator 2a is shaped generally as drum, and peripheral part passes through example
It is fixed on hermetic container 1 such as heat setting-in etc..
Stator 2a has the structure being wound around coil, from external power source (not shown) via glass
Glass terminal 26 and lead-in wire 27 feed electrical power to stator 2a.The generally cylindrical shape of rotor 2b,
And the inner peripheral surface of stator 2a separates the interval of regulation and is configured in the inner peripheral portion of stator 2a.At this turn
It is fixed with bent axle 4, motor 2 and compression mechanism 3 on sub-2b and becomes connected via bent axle 4
Structure.It is to say, motor 2 rotates, thus, rotary power is passed via bent axle 4
To compression mechanism 3.
As in figure 2 it is shown, bent axle 4 is constituted by with lower component: constitute the main shaft on the top of bent axle 4
Portion 4a；Constitute the countershaft portion 4b of the bottom of bent axle 4；It is formed at these main shaft part 4a and countershaft
Eccentric axial portion 4c, 4d and intermediate shaft portion 4e between portion 4b.Here, in eccentric axial portion 4c
Mandrel is eccentric with predetermined distance from the central shaft of main shaft part 4a and countershaft portion 4b, eccentric axial portion 4c
It is configured in the first cylinder chamber 30 of the first cylinder 8 described later.It addition, eccentric axial portion 4d
Central shaft is eccentric with predetermined distance from the central shaft of main shaft part 4a and countershaft portion 4b, eccentric axial portion
4d is configured in the second cylinder chamber 31 of the second cylinder 9 described later.
It addition, eccentric axial portion 4c and eccentric axial portion 4d are set in the way of phase shifting 180 degree.
These eccentric axial portion 4c and eccentric axial portion 4d are connected by intermediate shaft portion 4e.Additionally, it is middle
Axle portion 4e is configured in the through hole of central dividing plate 5 described later.The bent axle 4 constituted like this
Main shaft part 4a is rotatably supported by base bearing 6, and countershaft portion 4b is rotatably by supplementary bearing
7 supportings.It is to say, bent axle 4 becomes in the first cylinder chamber 30 and the second cylinder chamber 31,
Eccentric axial portion 4c, the structure of 4d eccentric rotational motion.
Compression mechanism 3 has the first cylinder 8 and second gas of 4b side, countershaft portion of main shaft part 4a side
Cylinder 9, and it is configured in the lower section of motor 2.This compression mechanism 3 is from upside towards downside successively
Stacking base bearing the 6, first cylinder the 8, second cylinder 9 and supplementary bearing 7 ground are constituted.
First cylinder 8 is to be formed through with bent axle 4(in more detail along the vertical direction, main shaft
Portion 4a and countershaft portion 4b) flat board member of the most concentric substantially cylindric through hole.This through hole
Convex by the most T-shaped base bearing 6 in cross section of an end (being upper side end in FIG)
Edge is closed, and another end (being downside end in FIG) is closed by central dividing plate 5, becomes
It it is the first cylinder chamber 30.
It is provided with first piston 11a in the first cylinder chamber 30 of above-mentioned first cylinder 8.This is first years old
Piston 11a is formed as ring-type, and is slidably arranged on eccentric axial portion 4c of bent axle 4.It addition,
In the first cylinder 8, it is formed and connects with the first cylinder chamber 30 and along the footpath of the first cylinder chamber 30
To the blade groove 8b(extended with reference to Fig. 3).And, in this blade groove 8b slidably
It is provided with the first blade 5a.The leading section of the first blade 5a is supported with the peripheral part of first piston 11a
Connecing, thus, the first cylinder chamber 30 is divided into suction chamber 30a and discharge chambe 30b.
It addition, in the first cylinder 8, for the low-pressure fluid of kind of refrigeration cycle is sucked the first cylinder
The inhalation port 50 of the suction chamber 30a of room 30 radially wears.
Second cylinder 9 is also to be formed through with bent axle 4(in more detail along the vertical direction, main
Axle portion 4a and countershaft portion 4b) flat board member of the most concentric substantially cylindric through hole.This leads to
One end (being upper side end in FIG) in hole is closed by central dividing plate 5, another end
(being downside end in FIG) is closed by the flange part of the most T-shaped supplementary bearing 7 in cross section,
Become the second cylinder chamber 31.
The second piston 11b it is provided with in the second cylinder chamber 31 of the second cylinder 9.This second work
Plug 11b is formed as ring-type, is slidably arranged on eccentric axial portion 4d of bent axle 4.It addition,
In the second cylinder 9, it is formed with the footpath along the second cylinder chamber 31 connected with the second cylinder chamber 31
To the blade groove (not shown) extended.And, in this blade groove (not shown) slidably
Be provided with the second blade (not shown).Live with second in the leading section of the second blade (not shown)
Plug 11b peripheral part abut, thus, the second cylinder chamber 31 in the same manner as the first cylinder chamber 30 by
It is separated into suction chamber and discharge chambe.
It addition, in the second cylinder 9, for the low-pressure fluid of kind of refrigeration cycle is sucked the second cylinder
The inhalation port 51 of the suction chamber of room 31 radially wears.
In these first cylinders 8 and the second cylinder 9, connect and have for making gas shape cold-producing medium stream
Enter the first cylinder chamber 30 and accumulator 40 of the second cylinder chamber 31.Accumulator 40 specifically has
Have: container 41, store the cold-producing medium of the low pressure flowed out from the vaporizer constituting kind of refrigeration cycle；Flow into
Pipe 42, imports container 41 by low pressure refrigerant from vaporizer；With suction tube 43,44.Suction tube
The 43 gas shape cold-producing mediums in the cold-producing medium that will be stored in container 41 import the first cylinder 8
First cylinder chamber 30, and be connected with the inhalation port 50 of the first cylinder 8 by connecting piece 60.Separately
Outward, the suction tube 44 gas shape cold-producing medium in the cold-producing medium that will be stored in container 41 imports the
Second cylinder chamber 31 of two cylinders 9, and by connecting piece 61 and the inhalation port of the second cylinder 9
51 connect.
Connecting piece 60,61 has: the inhalation port side linking part 60a of inhalation port 50,51 side,
61a；With suction tube side linking part 60b, 61b of suction tube 43,44 side, inhalation port side is even
Knot 60a, 61a are pressed into inhalation port 50,51 side.Suck tube side linking part 60b, 61b
Outside hermetic container 1 prominent and be positioned at connecting portion 1d, the 1e being arranged on hermetic container 1.
And, the end of suction tube 43,44 is inserted into this suction tube side linking part 60b, 61b, sucks
Tube side linking part 60b, 61b, connecting portion 1d, 1e(reference Fig. 1 of hermetic container 1) and inhale
Enter pipe 43,44 connected by welding.Additionally, certainly, inhalation port side linking part 60a, 61a
Can at random set with sucking the tube side respective length of linking part 60b, 61b.
Connecting portion 1d, 1e of hermetic container 1 is not do when the insertion of connecting piece 60,61
Relate to, relative to the central axis of the above-below direction extension along hermetic container 1 and towards hermetic container
The Central places of 1 is installed in hermetic container 1.Although it addition, the connecting portion 1d of hermetic container 1,
The height and position of 1e is different, but is formed at the position overlapped when viewed in plan.Additionally, connecting piece
60,61 and the link of inhalation port 50,51 can also be carried out by press-in, it is possible to use close
Envelope parts.
It addition, suction tube 43,44 and inhalation port 50,51 be connected by connecting piece 60,61,
Thus compared with directly connecting junction configuration with inhalation port 50,51 with by suction tube 43,44, it is possible to
Shorten the length of suction tube 43,44.By these structures, suction tube 43,44 is connected to
Workability when tying suction tube side linking part 60b, 61b of pipe 60,61 improves.Thus, need not
Increase as in the past suction tube 43,44 and connecting piece 60,61 suction tube side linking part 60b,
The gap of 61b, it is possible to become Min., it is possible to suppression failure welding or the generation of poor sealing.
Fig. 4 is rotary compressor 100 and the comparison diagram of conventional mode of embodiments of the present invention 1.
Fig. 4 (a) is present embodiment, and Fig. 4 (b) is past case.
The distance of the connecting portion 1d and connecting portion 1e of hermetic container 1 with do not hinder weld job or
The mode L1 at a prescribed interval not affected by weld strain sets.About this point, this enforcement
Mode is the most identical with past case.
And, conventional connecting piece 600,601 as shown in the chain-dotted line of Fig. 4 (b), suction side
The mouth central shaft of 50,51 sides and the central shaft of suction tube 43,44 side are coaxial.In contrast,
The connecting piece 60,61 of present embodiment 1 as shown in the chain-dotted line of Fig. 4 (a), inhalation port side
The central shaft of linking part 60a, 61a and the eccentricity of central axis of suction tube side linking part 60b, 61b.
In more detail, the central shaft of inhalation port side linking part 60a, 61a and suction tube side linking part
The central shaft of 60b, 61b compares the lateral deviation heart in a direction close to each other.It addition, suck tube side even
Knot 60b, 61b interval each other and inhalation port side linking part 60a, 61a interval phase each other
With.
Thus, it is ensured that the interval L1 of each regulation between connecting portion 1d, 1e, and in this embodiment
Can be to set the axially spaced-apart between the first cylinder 8 and the second cylinder 9 with reducing the amount of L2.
By reducing the axially spaced-apart between the first cylinder 8 and the second cylinder 9, become compressed gas load
The base bearing 6 of supporting-point and the interval of supplementary bearing 7 shorten, it is possible to suppression by compressed gas load
The flexure of the bent axle 4 produced.
With can suppress like this bent axle 4 flexure degree correspondingly, additionally it is possible to carry out the diameter of axle
Reduce the design alteration that such rigidity making bent axle 4 reduces, it is possible to realize by axle slippage loss
Reduce the compressor high efficiency produced.Additionally, here, tube side linking part 60b, 61b are sucked
Interval and inhalation port side linking part 60a, 61a interval each other each other are identical, but also differ
Fixed necessary identical, as long as sucking tube side linking part 60b, 61b interval each other equal to or more than inhaling
Inbound port side linking part 60a, 61a interval each other.It addition, certainly, offset can
At random set.
Incidentally, the inhalation port 50 of the first cylinder 8 and the inhalation port 51 of the second cylinder 9
Respective flow path cross sectional area is the suction chamber 30a and being inhaled into the first cylinder chamber 30 at cold-producing medium
During the suction chamber of two cylinder chamber 31, it is configured to not produce the area sucking crushing.Do not produce suction
Enter the flow path cross sectional area of crushing according to the circular flow of compressor or the refrigerant property of use not
With.Therefore, in general, in rotary compressor, there is the stream of inhalation port 50,51
The multiple compressor that sectional area is different.
And, never increase the viewpoint sucking crushing when making cold-producing medium suction rotary compressor 100
Setting out, the suction tube 43,44 of accumulator 40 needs equal to or more than inhalation port 50,51
The flow path cross sectional area of flow path cross sectional area.Thus, in general, with the stream of inhalation port 50,51
Matchingly, the stream being ready for suction tube 43,44 cuts the different multiple compressor of road sectional area
The multiple accumulator 40 that area is different.Therefore, when constituting refrigerating air conditioning device, need and use
The kind of rotary compressor correspondingly selects accumulator 40, exists and causes loaded down with trivial details bad of part management
Situation.
Thus, as long as no matter the flow path cross sectional area of inhalation port 50,51 can use general
Accumulator, it becomes possible to obtain the advantage such as loaded down with trivial details eliminating part management.Here, it is considered to use Fig. 4
B the conventional connecting piece 600,601 of () is bigger than the accumulator 40 shown in Fig. 4 for caliber
The accumulator 40 of suction tube 43,44 make the situation that part is unified.Fig. 4's (b) is conventional
Connecting piece 600,601 as described above, the central shaft of inhalation port side linking part 60a, 61a and
The central shaft sucking tube side linking part 60b, 61b is coaxial.Thus, it is ensured that each connecting portion 1d,
The interval L1 of the regulation between 1e, and, during to connect caliber big suction tube 43,44,
The axially spaced-apart between the first cylinder 8 and the second cylinder 9 must be expanded.Therefore, in conventional structure
In, do not expand and be axially spaced to realize the unitized of accumulator 40 to be difficult.
On the other hand, in present embodiment 1, by use inhalation port side linking part 60a,
The central shaft of 61a and suck tube side linking part 60b, 61b eccentricity of central axis connecting piece 60,
61, it is possible to for can ensure that the accumulator that the caliber of necessary flow path area is big makes part unified.The most just
It is to say, in the diagram, the bigger suction tube 43,44 of the accumulator 40 illustrated is compared for caliber
In the case of accumulator 40 makes part unified, suck tube side linking part 60b, 61b as long as using
The connecting piece 60,61 that diameter is bigger.By using this connecting piece 60,61, it is possible to really
Protect under the state of interval L1 of each regulation between connecting portion 1d, 1e, it addition, make the first gas
Under the state that the position being spaced in Fig. 4 (a) of cylinder 8 and the second cylinder 9 reduces, use caliber big
Accumulator 40.Thereby, it is possible to enjoy the advantage of the quantization of part manufacturing cost, eliminate part pipe
Reason loaded down with trivial details etc., it is achieved the raising of productivity ratio.
Hereinafter, the cross sectional shape about connecting piece 60,61 is discussed.Additionally, connecting piece 60,
The cross sectional shape of 61 is determined matchingly with the cross sectional shape of inhalation port 50, therefore, first,
Cross sectional shape about inhalation port 50 illustrates.
Fig. 5 is the inhalation port 50 of the rotary compressor 100 representing embodiments of the present invention 1
The figure of cross sectional shape.
The cross sectional shape of inhalation port 50 uses the direction of rotation dimension D axial dimension than bent axle 4
The non-circular cross sectional shape that H1 is big.Therefore, identical with flow path cross sectional area circular section shape phase
Ratio, it is possible to reduce axial dimension H1.
Like this, inhalation port 50 uses non-circular shape, becomes H1 < D, thereby, it is possible to
Set the axial height H of the first cylinder 8 smaller.Additionally, here, about inhalation port 50
It is illustrated, but inhalation port 51 is also same.
Fig. 6 is the explanatory diagram of the flowing path section shape of the connecting piece 60 of Fig. 1, and (a) is cross-sectional regarding
Figure, (b) is the longitudinal section of inhalation port side linking part 60a, and (c) is to suck tube side to link
The longitudinal section of portion 60b.Here, it is shown that connecting piece 60, but this side of connecting piece 61 is also
Same structure.
As shown in Figure 6, the flowing path section of inhalation port side linking part 60a is same with inhalation port 50
Being configured to non-circular shape, the flowing path section sucking tube side linking part 60b uses circle sample.This
Outward, suction tube 43 is typically round, thus sucks the flowing path section shape of tube side linking part 60b
It is also adopted by circle.But, when considering to suck crushing, inhalation port side linking part 60a is not rounded
In the case of shape shape, as it is shown in fig. 7, suck tube side linking part 60b it is also preferred that use non-circular
Shape.Like this, inhalation port side linking part 60a and the suction tube side respective stream of linking part 60b
Road cross sectional shape can at random combine circular and non-circular cross sectional shape.
And, here, the flowing path section shape of inhalation port side linking part 60a is as non-circular shape
One example of shape uses elongated hole.But, non-circular shape is not limited to relative as shown in Figure 6,7
While becoming the such elongated hole of the straight line being parallel to each other, also include that relative is not the most straight
Line and be the shape of curve.It addition, non-circular shape is relative while being arranged by multiple bending sections
And become the shape of linearity, also include elliptical shape.
Fig. 8 is the amplification view of the line B-B along Fig. 3.
As shown in Figure 8, at inner circumferential 8a and the periphery 11c of first piston 11a of the first cylinder 8
Between, for avoiding mutual contact, need to arrange space W.By space W and the first cylinder 8
The leakage surface of the long-pending area S obtained of axial height H become connection discharge chambe 30b and suction
Enter the room the leakage stream of 30a, known in become the reason that compressor efficiency reduces.Thus, by relatively
Set the axial height H of the first cylinder 8, the area S on leakage surface to reduce littlely, it is possible to increase
Compressor efficiency.
It addition, by reducing the first cylinder 8 and the axial height H of the second cylinder 9, it is possible to reduce
Act on eccentric axial portion 4c of bent axle 4 or the compressed gas load of eccentric axial portion 4d.And, logical
Cross the axial height H reducing by first cylinder the 8, second cylinder 9, additionally it is possible to shorten and become compressed gas
Distance between base bearing 6 and the supplementary bearing 7 of the supporting-point of Systemic Burden.Therefore, it is possible to suppression by
The flexure of the bent axle 4 that compressed gas load produces, it is possible to realize further compressor high efficiency.
Hereinafter, the flowing path section shape about inhalation port side linking part 60a uses non-circular shape
In the case of (non-circular shape that axial dimension is less than direction of rotation size), suck tube side and link
Condition required by portion 60b illustrates.
Fig. 9 be make suction tube side linking part 60b for circular, make the inhalation port side linking part 60a be
Non-circular shape and make the flow path cross sectional area of suction tube side linking part 60b and inhalation port side link
The explanatory diagram of the connecting piece 60A that the flow path cross sectional area of portion 60a is identical, (a) is sectional elevation,
B () is the longitudinal section of inhalation port side linking part 60a, (c) is to suck tube side linking part 60b
Longitudinal section.
Situation that identical flow path cross sectional area Sa is made up of non-circular shape and being made up of round-shaped
In the case of, this side is longer for the situation that radial dimension is made up of non-circular shape as illustrated in fig. 9
(D1 ＞ D0).Like this, suction tube side linking part 60b is made to be circle, make inhalation port side
Linking part 60a be direction of rotation length non-circular shape and with identical flow path area be connected link
In the case of pipe 60A, it is necessary to there is reducing diameter part, it is impossible to avoid by the flow path resistance of refrigerant gas
The suction crushing produced.Make the state that the flowing path section of suction tube side linking part 60b is generally circular in shape
Under, for avoiding sucking crushing, need the diameter making suction tube side linking part 60b equal to or more than inhaling
The direction of rotation dimension D 1 of inbound port side linking part 60a.This with make inhalation port side linking part 60a
Flowing path section be shaped as non-circular shape (the non-circular shape that axial dimension is less than direction of rotation size
Shape) in the case of, to suck condition required by tube side linking part 60b suitable.
Like this, the axial height H of the first cylinder 8 to be reduced, make inhalation port side linking part 60a
Flowing path section shape become the non-circular shape that axial dimension is short in the case of, need increase suck
The caliber of pipe 43.Here, in the structure in the past shown in Fig. 4 (b), increase as described above
During the caliber of suction tube 43,44, need to expand the axle between the first cylinder 8 and the second cylinder 9
To interval.It is to say, i.e. allow to reduce the first cylinder 8 and the second cylinder 9 is respective axially
Highly H, it is also necessary to expand the axially spaced-apart between the first cylinder 8 and the second cylinder 9, its result,
The flexure inhibition of bent axle 4 can not be obtained.
On the other hand, in the case of employing the connecting piece 60,61 of present embodiment 1, increasing is worked as
During the caliber of big suction tube 43,44, it is not necessary to expand between the first cylinder 8 and the second cylinder 9
Axially spaced-apart.Thereby, it is possible to realization reduces the first cylinder 8 and the second cylinder 9 is respective simultaneously
Axial height H and reduce the axially spaced-apart between the first cylinder 8 and the second cylinder 9.
Hereinafter, about the flowing path section shape of inhalation port side linking part 60a to rotary compressor
The impact that the compressed action of 100 brings is discussed, and about inhalation port side linking part 60a's
The preferred shape as non-circular shape of flowing path section shape is discussed.
Figure 10 is the horizontal stroke of the first cylinder 8 of the rotary compressor 100 of embodiments of the present invention 1
Sectional view, is the compression section angle, θ determined by suction side peristoma 50b and outlet side peristoma 70a
Explanatory diagram.
When the direction of rotation of inhalation port 50 becomes large-sized, as shown in Figure 10, by inhalation port
Edge 50b(Y point, the edge, opposition side of the first blade 5a) and the discharge port of discharge port 70
Edge 70a(Z point, the edge, opposition side of the first blade 5a) the compression section angle, θ that determines reduces,
Get rid of volume to reduce.
Here, the flowing path section shape to inhalation port 50 uses oval situation and uses ellipse
Situation compare.Oval and oval under make flow path cross sectional area identical time, this side's oval
The direction of rotation size of inhalation port 50 than oval greatly.Thus, compression section angle, θ reduces,
Get rid of volume to reduce.Therefore, the flowing path section shape at inhalation port 50 uses non-circular shape
In the case of, oval than ellipse more preferably.
As it has been described above, in present embodiment 1, the inhalation port side of connecting piece 60,61 links
The central shaft of portion 60a, 61a with suck tube side linking part 60b, 61b central shaft compared with to mutually
Close direction is eccentric.Thereby, it is possible to do not hinder the workability ground carrying out welding with hermetic container 1
Reduce the axially spaced-apart between the first cylinder 8 and the second cylinder 9.Therefore, it is possible to suppression bent axle 4
Flexure, it is possible to reduce the diameter of axle with not reducing the reliability of bent axle 4, it is possible to obtain high efficiency rotation
Rotary compressor.
Embodiment 2
It is close relative to the pressure of inhalation port 50,51 that embodiment 2 achieves connecting piece 60,61
The raising of envelope property.
Cutting of linking part 60a, 61a side, inhalation port side of the connecting piece 60,61 of embodiment 2
Face shape is different from embodiment 1, and part in addition is identical with embodiment 1.Hereinafter,
Illustrate centered by the part that embodiment 2 is different from embodiment 1.Additionally, be used for carrying
The structure of high pressure sealing is identical in connecting piece 60,61, below, with connecting piece 60 as generation
Table illustrates.
Figure 11 is the key position sectional view of the rotary compressor of embodiments of the present invention 2, is
Represent and by the inhalation port side linking part 61a press-in cross sectional shape of the connecting piece 60 of Fig. 9 (a) be
The schematic diagram in the direction of the internal stress of the connecting piece 60 during the inhalation port 50 of elongated hole.
The cross sectional shape of the inhalation port side linking part 60a of connecting piece 60 is elongated hole, and makes long
The relative long leg 60c in hole becomes at connecting piece 60 relative to the press-in surplus of inhalation port 50
In the range of prominent laterally convex form 60e.By using this structure, it is possible to realize connecting piece
60 relative to the pressure sealing raising of inhalation port 50.About this point, as comparative example,
With by the cross sectional shape of the inhalation port side linking part 60a of connecting piece 60 as Embodiment 1
Could be used without convex form the situation of elongated hole be compared to illustrate.
Figure 12 is to be denoted as comparative example, and the inhalation port side linking part 60a of connecting piece 60 cuts
Face shape could be used without the elongated hole of convex form as Embodiment 1, is pressed by this connecting piece 60
Showing of the direction of the internal stress of the connecting piece 60 when entering the inhalation port 50 that cross sectional shape is elongated hole
It is intended to.Figure 13 is to represent showing of state that the internal stress by Figure 12 makes connecting piece 60 deform
It is intended to.
As shown in figure 12, in the suction side that the connecting piece 60 that cross sectional shape is elongated hole is pressed into elongated hole
In the case of mouth 50, the bending section 60d at the two ends of elongated hole the internal stress produced is delivered to even
Meet a pair long leg 60c of the bending section 60d at two ends.Like this, as shown in figure 13, long limit
Portion 60c can deform to inner side as shown in blank arrowhead.In the feelings that long leg 60c deforms to inner side
Under condition, connecting piece 60 reduces relative to the indentation sealing of inhalation port 50.Thus, airtight appearance
The refrigerant gas of the environment under high pressure in device 1 can be from this crushed element and the gap of inhalation port 50
Flow into suction chamber 30a, cause the reduction of compressor efficiency.
Therefore, in present embodiment 2, the inhalation port side linking part 60a's of connecting piece 60
Cross sectional shape uses elongated hole, and elongated hole mutually relative to a pair long leg 60c use and linking
Pipe 60 is relative to convex form 60e prominent laterally in the range of the press-in surplus of inhalation port 50.
By using this structure, by connecting piece 60 to the press-in of inhalation port 50, by bending section 60d
The internal stress produced is along the direction transmission making convex form 60e deform laterally.Thereby, it is possible to it is long
Edge 60c does not obtain to shifting ground, inner side improves the connecting piece 60 that indentation sealing reduces.
As it has been described above, according to present embodiment 2, it is thus achieved that with the action effect as embodiment 1,
And the relative long leg 60c of elongated hole uses at connecting piece 60 relative to the pressure of inhalation port 50
Enter convex form 60e prominent laterally in the range of surplus.Thus, compared with embodiment 1,
It is obtained in that and improves the rotation pressure that connecting piece 60 reduces relative to the indentation sealing of inhalation port
Contracting machine 100.
Claims (9)
1. a rotary compressor, has motor and by described motor in hermetic container
Compress mechanism via bent axle is powered, the multiple cylinders being arranged in described compression mechanism are divided
The suction tube of refrigerant gas is not independently connected,
It is characterized in that,
The plurality of cylinder is respectively provided with the cylinder chamber of cylindrical shape, extends radially through from described cylinder chamber
It is formed with inhalation port,
This rotary compressor has the described inhalation port of link and the connecting piece of described suction tube,
Described connecting piece has inhalation port side linking part and sucks tube side linking part,
For described in 2 of the described cylinder connection adjacent with at least 2 in the plurality of cylinder
In connecting piece each, the central shaft of described inhalation port side linking part and described suction tube side linking part
Central shaft compare eccentric in a direction close to each other.
2. rotary compressor as claimed in claim 1, it is characterised in that for described extremely
2 described connecting pieces that few 2 adjacent described cylinders connect, described suction tube side linking part that
This interval is equal to or more than described inhalation port side linking part interval each other.
3. rotary compressor as claimed in claim 1 or 2, it is characterised in that described suction side
Mouthful and the respective flowing path section shape of described inhalation port side linking part of described connecting piece be
The non-circular shape that size in the axial direction of bent axle is less than the size in the direction of rotation of bent axle.
4. rotary compressor as claimed in claim 3, it is characterised in that described connecting piece
The flowing path section shape of described suction tube side linking part is round-shaped.
5. rotary compressor as claimed in claim 3, it is characterised in that described connecting piece
The flowing path section shape of described suction tube side linking part is that the size ratio in the axial direction of bent axle is at song
The non-circular shape that size in the direction of rotation of axle is little.
6. rotary compressor as claimed in claim 3, it is characterised in that described non-circular shape
Shape is oval or a part includes the oval of straight line.
7. the rotary compressor as described in claim 4 or 5, it is characterised in that described non-circular
Shape is oval or a part includes the oval of straight line.
8. the rotary compressor as according to any one of claim 1,2,4,5, its feature exists
In, the flowing path section shape of the described inhalation port side linking part of described connecting piece is elongated hole, described
Elongated hole has the bending section at two ends and connects a pair long leg of bending section at described two ends, and described one
Long leg is respectively provided with convex form prominent laterally.
9. rotary compressor as claimed in claim 3, it is characterised in that described connecting piece
The flowing path section shape of described inhalation port side linking part is elongated hole, and described elongated hole has the curved of two ends
A pair long leg of the bending section at pars convoluta and the described two ends of connection, the pair of long leg is respectively provided with
Convex form prominent laterally.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013067134A JP6080646B2 (en) | 2013-03-27 | 2013-03-27 | Rotary compressor |
| JP2013-067134 | 2013-03-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104074764A CN104074764A (en) | 2014-10-01 |
| CN104074764B true CN104074764B (en) | 2016-08-17 |
Family
ID=51596286
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410117515.XA Active CN104074764B (en) | 2013-03-27 | 2014-03-27 | Rotary compressor |
| CN201420141615.1U Withdrawn - After Issue CN203948296U (en) | 2013-03-27 | 2014-03-27 | Rotary compressor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420141615.1U Withdrawn - After Issue CN203948296U (en) | 2013-03-27 | 2014-03-27 | Rotary compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6080646B2 (en) |
| CN (2) | CN104074764B (en) |
| CZ (1) | CZ306717B6 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6080646B2 (en) * | 2013-03-27 | 2017-02-15 | 三菱電機株式会社 | Rotary compressor |
| JPWO2018150494A1 (en) * | 2017-02-15 | 2019-11-07 | 三菱電機株式会社 | Compressor |
| CN109209886A (en) * | 2017-07-07 | 2019-01-15 | 上海海立电器有限公司 | A kind of rotor-type compressor |
| JP2019183720A (en) | 2018-04-06 | 2019-10-24 | 三菱重工サーマルシステムズ株式会社 | Compressor |
| CN113302400B (en) * | 2019-01-28 | 2023-08-25 | 东芝开利株式会社 | Compressor and refrigeration cycle device |
| KR20210028396A (en) * | 2019-09-04 | 2021-03-12 | 삼성전자주식회사 | Rotary compressor and home appliance including the same |
| US11248605B1 (en) * | 2020-07-28 | 2022-02-15 | Emerson Climate Technologies, Inc. | Compressor having shell fitting |
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| CN1782437A (en) * | 2004-11-30 | 2006-06-07 | 乐金电子(天津)电器有限公司 | Sucking pipe connection structure of rotary compressor |
| CN1955473A (en) * | 2005-10-27 | 2007-05-02 | 乐金电子(天津)电器有限公司 | Multi-stage rotary compressor |
| CN102678554A (en) * | 2011-03-10 | 2012-09-19 | 三菱电机株式会社 | Rotary compressor |
| CN203948296U (en) * | 2013-03-27 | 2014-11-19 | 三菱电机株式会社 | Rotary compressor |
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| JPH0825508B2 (en) * | 1986-12-03 | 1996-03-13 | ヤマハ発動機株式会社 | Exhaust control device for motorcycles |
| JPH0275787A (en) * | 1988-09-09 | 1990-03-15 | Toshiba Corp | 2-cylinder rotary compressor |
| JPH0464685U (en) * | 1990-10-16 | 1992-06-03 | ||
| JPH0979161A (en) * | 1995-09-12 | 1997-03-25 | Toshiba Corp | Rotary compressor |
| JP2001099083A (en) * | 1999-09-30 | 2001-04-10 | Sanyo Electric Co Ltd | Two-cylinder rotary comperssor |
| JP3370046B2 (en) * | 2000-03-30 | 2003-01-27 | 三洋電機株式会社 | Multi-stage compressor |
| JP2003214370A (en) * | 2002-01-23 | 2003-07-30 | Mitsubishi Heavy Ind Ltd | Rotary compressor |
| JP2006037757A (en) * | 2004-07-23 | 2006-02-09 | Matsushita Electric Ind Co Ltd | Compressor |
| JP2007146736A (en) * | 2005-11-28 | 2007-06-14 | Sanyo Electric Co Ltd | Rotary compressor |
| JP4877054B2 (en) * | 2007-04-27 | 2012-02-15 | 株式会社富士通ゼネラル | Rotary compressor |
| JP2010121481A (en) * | 2008-11-18 | 2010-06-03 | Mitsubishi Electric Corp | Rotary compressor |
| JP5560807B2 (en) * | 2010-03-23 | 2014-07-30 | ダイキン工業株式会社 | Compressor |
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- 2013-03-27 JP JP2013067134A patent/JP6080646B2/en not_active Expired - Fee Related
-
2014
- 2014-03-20 CZ CZ2014-167A patent/CZ306717B6/en not_active IP Right Cessation
- 2014-03-27 CN CN201410117515.XA patent/CN104074764B/en active Active
- 2014-03-27 CN CN201420141615.1U patent/CN203948296U/en not_active Withdrawn - After Issue
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1782437A (en) * | 2004-11-30 | 2006-06-07 | 乐金电子(天津)电器有限公司 | Sucking pipe connection structure of rotary compressor |
| CN1955473A (en) * | 2005-10-27 | 2007-05-02 | 乐金电子(天津)电器有限公司 | Multi-stage rotary compressor |
| CN102678554A (en) * | 2011-03-10 | 2012-09-19 | 三菱电机株式会社 | Rotary compressor |
| CN203948296U (en) * | 2013-03-27 | 2014-11-19 | 三菱电机株式会社 | Rotary compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014190267A (en) | 2014-10-06 |
| CN203948296U (en) | 2014-11-19 |
| CZ2014167A3 (en) | 2015-07-08 |
| JP6080646B2 (en) | 2017-02-15 |
| CN104074764A (en) | 2014-10-01 |
| CZ306717B6 (en) | 2017-05-24 |
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