CN105065272B - Rotary compressor - Google Patents
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- CN105065272B CN105065272B CN201510522240.2A CN201510522240A CN105065272B CN 105065272 B CN105065272 B CN 105065272B CN 201510522240 A CN201510522240 A CN 201510522240A CN 105065272 B CN105065272 B CN 105065272B
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Abstract
The invention discloses a kind of rotary compressor, including housing, compression mechanism and injection valve.The air inlet connected wherein in compression mechanism formed with intermediate cavity and with intermediate cavity, formed with exhaust outlet in intermediate cavity, air inlet is used to be passed through first pressure refrigerant or second pressure refrigerant into intermediate cavity, the pressure of second pressure refrigerant is higher than the pressure of first pressure refrigerant, the suction muffler of one of them in two cylinders connects with exhaust outlet, another discharge chamber in two cylinders connects with intermediate cavity, and the rear portion of another the vane slot in two cylinders has back pressure chamber, back pressure chamber connects with intermediate cavity, injection valve is located in compression mechanism for controlling whether to be passed through second pressure refrigerant in the compression chamber of one of them into two cylinders.According to the rotary compressor of the present invention, single cylinder can be run under the cooling conditions such as centre refrigeration, twin-tub is run under heating condition, and the efficiency of rotary compressor is high, simple in construction.
Description
Technical field
The present invention relates to art of refrigeration units, more particularly, to a kind of rotary compressor.
Background technology
In correlation technique, in centre during the operating mode refrigerating operaton such as refrigeration, the pressure ratio of compressor is small, the efficiency of single stage compress
Height, and if also using Two-stage Compression, because now two cylinders work simultaneously, the increase of friction power loss can be caused than cold
The increase of amount is fast, while can also cause the situation of refrigerant overcompression, causes the efficiency of Two-stage Compression to reduce.Moreover, compressor
In single cylinder mode operation, due to dragging a piston operation, its power can be higher than common single-stage compressor, so as to influence to press more
The efficiency of contracting machine.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention needs offer one
Kind rotary compressor, the rotary compressor have the advantages of simple in construction, efficiency is high.
A kind of rotary compressor according to embodiments of the present invention, including：Housing；Compression mechanism, the compression mechanism are set
In the housing, the compression mechanism includes base bearing, cylinder assembly, supplementary bearing, slide plate and piston, the base bearing and institute
The axial both ends that supplementary bearing is respectively provided at the cylinder assembly are stated, the cylinder assembly includes two cylinders and is located at described two
Dividing plate between cylinder, each cylinder have a compression chamber and the vane slot connected with the compression chamber, and the piston is along institute
Stating the inwall of compression chamber can roll, and the compression chamber includes suction muffler and discharge chamber, and the slide plate is movably arranged at the cunning
In film trap, wherein the air inlet connected in the compression mechanism formed with intermediate cavity and with the intermediate cavity, in the intermediate cavity
Formed with exhaust outlet, the air inlet is used to be passed through first pressure refrigerant or second pressure refrigerant into the intermediate cavity, described
The pressure of second pressure refrigerant is higher than the pressure of the first pressure refrigerant, the suction of one of them in described two cylinders
Air cavity connects with the exhaust outlet, and another the discharge chamber in described two cylinders connects with the intermediate cavity, and institute
The rear portion for stating another the vane slot in two cylinders has back pressure chamber, and the back pressure chamber connects with the intermediate cavity；
And injection valve, the injection valve be located in the compression mechanism for described in controlling whether into described two cylinders wherein
The second pressure refrigerant is passed through in the compression chamber of one.
Rotary compressor according to embodiments of the present invention, single cylinder it can be run under the cooling conditions such as centre refrigeration,
Twin-tub is run under heating condition, and the efficiency of rotary compressor is high, simple in construction.
According to some embodiments of the present invention, the compression mechanism further comprises：Cover plate, the cover plate are located at the master
The side of the remote cylinder assembly of one of them in bearing and the supplementary bearing, in the base bearing and the supplementary bearing
It is described one of them the intermediate cavity is limited between the cover plate.
Further, the air inlet forms described in the base bearing and the supplementary bearing on one of them.
According to some embodiments of the present invention, the air inlet formed in described two cylinders any one or it is described
On dividing plate.
According to one embodiment of present invention, in the compression mechanism formed with described two cylinders described in wherein
One the compression chamber connection jet, the injection valve be configured to work as described two cylinders in it is described one of them
The compression chamber in pressure be less than the second pressure refrigerant pressure when open the jet, when described two cylinders
In the compression chamber of one of them in pressure be more than the second pressure refrigerant pressure when close the injection
Mouthful.
Preferably, the injection valve and the jet be each provided in described two cylinders it is described one of them or it is described
On dividing plate.
According to one embodiment of present invention, the injection valve is piston.
According to one embodiment of present invention, in the base bearing and the supplementary bearing with the institute in described two cylinders
State one of them that another is contacted and be provided with the first magnetic element for being suitable to the slide plate corresponding to absorption.
According to some embodiments of the present invention, another the side in neighbouring described two cylinders of the dividing plate
Provided with the second magnetic element suitable for the slide plate corresponding to absorption.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Fig. 1 is the structural representation of rotary compressor according to embodiments of the present invention；
Fig. 2 is the structural representation of rotary compressor according to embodiments of the present invention；
Fig. 3 is the structural representation of the compression mechanism of rotary compressor according to embodiments of the present invention；
Fig. 4 is the profile along the line A-A in Fig. 3；
Fig. 5 is the explosive view of the injection valve of rotary compressor according to embodiments of the present invention；
Fig. 6 is the structural representation of the compression mechanism of rotary compressor according to embodiments of the present invention；
Fig. 7 is the structural representation of the compression mechanism of rotary compressor according to embodiments of the present invention；
Fig. 8 is the enlarged diagram in the B portions that Fig. 7 centre circles show；
Fig. 9 is the structural representation of the compression mechanism of rotary compressor according to embodiments of the present invention；
Figure 10 is the structural representation of the upper cylinder of the compression mechanism of rotary compressor according to embodiments of the present invention.
Reference：
Rotary compressor 100,
Housing 1,
Compression mechanism 2, base bearing 21, supplementary bearing 22, passage 220, intermediate cavity 23, cover plate 24,
Upper cylinder 31, air intake passage 310, upper slide plate 311a, spring 311b, upper piston 312, lower cylinder 32, lower slide plate
321a, back pressure chamber 321b, lower piston 322, dividing plate 33, first partition 331, second partition 332,
First connecting tube a, the second connecting tube b, the 3rd connecting tube c, the 4th connecting tube d, control valve 4, air inlet e1, first
Blow vent e2, the second blow vent e3, reservoir 5, air intake duct f,
Injection valve 6, injection channel 60, screw 61, lift stopper 62, injection valve block 63, through hole 64, jet 65, the
One magnetic element 7, stator 81, rotor 82, bent axle 9, muffler 91, oiling blade 92.
Wherein, arrow x is used for the flow direction for illustrating the air entry of refrigerant from exhaust outlet towards the upper cylinder of intermediate cavity to flow, arrow
Head y is used to illustrate the flow direction that refrigerant flows from the air entry of upper cylinder towards suction muffler, and arrow z is used to illustrate refrigerant to pass through upper gas
The flow direction outside supreme cylinder is discharged after the compression of cylinder, arrow h is used for the compression heel row for illustrating first pressure refrigerant to pass through lower cylinder
The flow direction gone out to intermediate cavity.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " on ", " under ", " top ", " bottom ", " interior ", " outer ", " axle
To ", " radial direction ", the orientation of the instruction such as " circumference " or position relationship be based on orientation shown in the drawings or position relationship, be only for
It is easy to the description present invention and simplifies description, rather than instruction or implies that signified device or element there must be specific side
Position, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second "
It is only used for describing purpose, and it is not intended that indicating or implying relative importance or imply the technical characteristic indicated by indicating
Quantity.Thus, " first " is defined, the feature of " second " can be expressed or implicitly includes one or more spy
Sign.In the description of the invention, unless otherwise indicated, " multiple " are meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Rotary compressor 100 according to embodiments of the present invention is described below with reference to Fig. 1-Figure 10.Wherein, rotary compression
Machine 100 can be used in air-conditioning system (not shown).
As shown in Fig. 1-Figure 10, rotary compressor 100 according to embodiments of the present invention, including housing 1, compression mechanism 2
And injection valve.Wherein, compression mechanism 2 is located in housing 1, and reservoir 5 can be provided with outside housing 1.
Alternatively, rotary compressor 100 can be vertical compressor.In the description below the application, with rotary
Compressor 100 be vertical compressor exemplified by illustrate.Certainly, those skilled in the art are appreciated that rotary compression
Machine 100 can also be horizontal compressor (not shown).Here, it is necessary to which explanation, " vertical compressor " can be understood as revolving
The central axis upright of the cylinder of the compression mechanism 2 of rotary compressor 100 is in the compression of the mounting surface of rotary compressor 100
Machine, for example, as shown in Fig. 2 the central axis of cylinder vertically extends.Correspondingly, " horizontal compressor " can be understood as
The centerline axis parallel of cylinder is in the compressor of the mounting surface of rotary compressor 100.
Specifically, compression mechanism 2 includes base bearing 21, cylinder assembly, supplementary bearing 22, slide plate and piston.Wherein, main shaft
Hold 21 and supplementary bearing 22 be respectively provided at the axial both ends of cylinder assembly.For example, referring to Fig. 2 and Fig. 6-Fig. 9 is combined, when rotary pressure
When contracting machine 100 is vertical compressor, base bearing 21 and supplementary bearing 22 are respectively provided at the top and bottom of cylinder assembly.
When rotary compressor 100 is duplex cylinder compressor, as shown in fig. 6, cylinder assembly include two cylinders (for example,
As shown in Figure 6 upper cylinder 31 and lower cylinder 32), 33, two slide plates of dividing plate are (for example, upper slide plate 311a as shown in Figure 6
With lower slide plate 321a) and two pistons (for example, upper piston 312 and lower piston 322 as shown in Figure 6), upper cylinder 31 is with
Cylinder 32 is set in the vertical direction, and dividing plate 33 is located between the two cylinders, and each cylinder has compression chamber and and compression chamber
The vane slot of connection, two pistons can be rolled along the inwall of corresponding compression chamber respectively, and two slide plates are movably arranged at respectively
In corresponding vane slot, when cylinder loads work, the inner and periphery wall of corresponding piston of slide plate is only supported so that compression chamber to be divided
Suction muffler and discharge chamber are divided into, refrigerant to be compressed is passed through suction muffler, is discharged after the compression of corresponding cylinder from discharge chamber
To outside cylinder.Wherein, direction " interior " can be understood as the direction towards cylinder axis, and its opposite direction is defined as " outer ", i.e.,
Direction away from cylinder axis.
When rotary compressor 100 is the compressor of more than three cylinders or three cylinders, cylinder assembly includes setting in the axial direction
The cylinder of three or more than three, be provided with dividing plate 33 between adjacent two cylinders.It is appreciated that more than three cylinders or three cylinders
Other compositions of compressor are substantially the same such as piston, slide plate with duplex cylinder compressor, will not be repeated here.Need what is illustrated
It is in the description below the application, to be illustrated so that rotary compressor 100 is duplex cylinder compressor as an example, and above-mentioned two
Cylinder is referred to as upper cylinder 31 and lower cylinder 32, to facilitate description.
Wherein, connected formed with intermediate cavity 23 in compression mechanism 2 and with intermediate cavity 23 air inlet e1 (for example, as Fig. 2-
Air inlet e1 shown in Fig. 3 and Figure 10), it is used for formed with exhaust outlet (not shown), air inlet e1 in intermediate cavity 23
Between first pressure refrigerant or second pressure refrigerant are passed through in chamber 23, the pressure of second pressure refrigerant is higher than the pressure of first pressure refrigerant
Power, the suction muffler of one of them (for example, upper cylinder 31 as shown in Fig. 2-Fig. 3 and Fig. 6-Fig. 9) in two cylinders and row
Gas port connects, so as to the refrigerant in intermediate cavity 23 can enter in two cylinders it is above-mentioned be compressed in one of them, two
The discharge chamber of another (for example, lower cylinder 32 as shown in Fig. 2-Fig. 3 and Fig. 6-Fig. 9) in individual cylinder connects with intermediate cavity 23
It is logical, so as to which the above-mentioned refrigerant in another in two cylinders can be discharged in intermediate cavity 23, and it is above-mentioned in two cylinders
There is back pressure chamber 321b, back pressure chamber 321b to be connected with intermediate cavity 23 at the rear portion (i.e. the outer end of vane slot) of another vane slot,
So as to which the pressure suffered by corresponding slide plate (for example, lower slide plate 321a as shown in Figure 6) the inner is the refrigerant in cylinder
Pressure, the pressure suffered by outer end are the pressure of the refrigerant in intermediate cavity 23.
As shown in Fig. 2 reservoir 5 is connected to be passed through into lower cylinder 32 by air intake duct f with the suction muffler of lower cylinder 32
First pressure refrigerant, the flow direction of first pressure refrigerant are as shown by arrow A.
When rotary compressor 100 is applied in air-conditioning system, rotary compressor 100 can be in single cylinder operational mode
Or run under twin-tub operational mode.As shown in Fig. 2-Fig. 3 and Fig. 6, in cooling condition, first pressure is passed through into intermediate cavity 23
Refrigerant, because intermediate cavity 23 connects with back pressure chamber 321b, so, when first pressure refrigerant is entered in back pressure chamber 321b, glide
Piece 321a the inner it is equal with the pressure suffered by outer end, now, lower slide plate 321a releases are failure to actuate, lower slide plate 321a not with lower work
Plug 322 only supports, and lower cylinder 32 unloads, and only upper cylinder 31 works, and rotary compressor 100 is in single cylinder operational mode, so as to
Lower slide plate 321a abrasion can be reduced, the frictional dissipation of rotary compressor 100 is reduced, improve rotary compressor 100
Efficiency.
Simultaneously as intermediate cavity 23 connects (for example, suction muffler can be by such as Fig. 4 institutes with the suction muffler of upper cylinder 31 again
The air intake passage 310 shown connects with intermediate cavity 23), the discharge chamber of lower cylinder 32 connects the (circulating direction of refrigerant with intermediate cavity 23
As shown in arrow h in Fig. 3), so, the refrigerant in intermediate cavity 23 is by the air inlet e1 first pressure refrigerants entered and by lower gas
The mixing refrigerant that the first pressure refrigerant of the discharge chamber discharge of cylinder 32 is formed, the mixing refrigerant enter upper gas by intermediate cavity 23
In the suction muffler of cylinder 31 (circulation path of mixing refrigerant is successively as shown in arrow x, arrow y in Fig. 3), by the pressure of upper cylinder 31
It is outer (circulation path of mixing refrigerant is as shown in arrow z in Fig. 3) that supreme cylinder 31 is discharged after contracting.
In heating condition, rotary compressor 100 is in twin-tub operational mode, by air inlet e1 into intermediate cavity 23
Second pressure refrigerant is passed through, because the pressure of second pressure refrigerant is higher than the pressure of first pressure refrigerant, now descends slide plate 321a
Outer end suffered by the inner of pressure more than lower slide plate 321a suffered by pressure, lower slide plate 321a makees in inner and outer end pressure difference
With the lower vane slot that inwardly stretches out only to be supported with lower piston 322, so as to which lower cylinder 32 loads work, the from reservoir 5 is compressed
One pressure refrigerant, the refrigerant in such intermediate cavity 23 compressed for lower cylinder 32 after refrigerant and intermediate cavity 23 is passed through by air inlet e1
The mixing refrigerant of interior second pressure refrigerant, after the mixing refrigerant enters the suction muffler of upper cylinder 31, then by upper cylinder 31
Further compress, the higher refrigerant of the pressure after compressing afterwards is expelled to outside upper cylinder 31, is realized the Two-stage Compression of refrigerant, is entered one
Improve to step the efficiency of rotary compressor 100.Wherein, between intermediate cavity 23, upper cylinder 31 and lower cylinder 32 refrigerant stream
Path is respectively as shown in arrow x, arrow y, arrow z and arrow h in Fig. 3.
Further, since during Two-stage Compression, the pressure difference at lower slide plate 321a both ends is the refrigerant and second pressure in lower cylinder 32
Pressure difference between refrigerant, wherein, first pressure refrigerant can be low pressure refrigerant, and second pressure refrigerant can be middle pressure refrigerant, from
And the pressure difference at lower slide plate 321a both ends is small, it can further reduce lower slide plate 321a abrasion.Rotation according to embodiments of the present invention
Rotary compressor 100, by, formed with intermediate cavity 23, thus, being rotated in compression mechanism 2 under the cooling conditions such as centre refrigeration
Formula compressor 100 can be run under single cylinder pattern, and rotary compressor 100 can be transported under twin-tub pattern under heating condition
OK, and rotary compressor 100 efficiency it is high, it is simple in construction.
Injection valve is located in compression mechanism 2 for controlling whether the above-mentioned compression chamber of one of them into two cylinders
Inside it is passed through second pressure refrigerant.For example, as shown in Figure 1 and Figure 4, injection valve can be located on upper cylinder 31 and be located at injection channel
At 60, when injection valve is opened, injection channel 60 connects with the compression chamber of upper cylinder 31, is passed through the second pressure of injection channel 60
Refrigerant can be injected into the compression chamber of upper cylinder 31 to carry out injection increasing enthalpy to the refrigerant in compression chamber, so as to pass through spray
The enthalpy for the refrigerant penetrated in valve increase compression chamber, when injection valve is closed, injection channel 60 does not connect with compression chamber.
It is understood that reference picture 7 and combining Fig. 8, injection valve can also be located at the injection channel 60 on dividing plate 33,
Through hole 64 is located on dividing plate 33 and can connect the compression chamber of upper cylinder 31, when injection valve is opened, injection channel 60 and through hole
64 connections, now the compression chamber of upper cylinder 31 can connect with injection channel 60, so as to be passed through the second pressure into compression chamber
Power refrigerant.
Rotary compressor 100 according to embodiments of the present invention, using injection valve to above-mentioned wherein one in two cylinders
It is individual to carry out injection increasing enthalpy, improve the efficiency of rotary compressor 100.
According to some embodiments of the present invention, compression mechanism 2 may further include cover plate 24, and cover plate 24 can be located at master
The side of the remote cylinder assembly of one of them in bearing 21 and supplementary bearing 22, wherein one in base bearing 21 and supplementary bearing 22
It is individual that intermediate cavity 23 is limited between cover plate 24.For example, as shown in figure 3, cover plate 24 can be detachable by fasteners such as bolts
Ground is connected to the lower end of supplementary bearing 22, and cover plate 24 is horizontally extending, intermediate cavity 23 formed cover plate 24 and supplementary bearing 22 it
Between.Certainly, the invention is not restricted to this, during cover plate 24 can also be located at the top of base bearing 21 and be limited between base bearing 21
Between chamber 23.
Further, air inlet e1 can be formed in one of them in base bearing 21 and supplementary bearing 22.For example, as schemed
Shown in 2, air inlet e1 can be formed on supplementary bearing 22, the first connecting tube a can be connected through housing 1 with air inlet e1 with to
First pressure refrigerant or second pressure refrigerant are passed through in intermediate cavity 23.
According to the present invention some specific embodiments, air inlet e1 can be formed in two cylinders any one or every
On plate 33.For example, referring to Fig. 9 and combine Figure 10, air inlet e1 run through upper cylinder 31 periphery wall, air intake passage 310 substantially along
The circumferential direction extension of upper cylinder 31, and the inner radial direction along upper cylinder 31 of air intake passage 310 penetrates suction muffler, air inlet
Mouth e1 is connected with air intake passage 310, and such first pressure refrigerant or second pressure refrigerant directly can be entered by air inlet e1
It is compressed in upper cylinder 31, and without flowing through intermediate cavity 23, transported so as to be effectively improved rotary compressor 100 in single cylinder
The situation of refrigerant overheat during row, improves the efficiency under single cylinder operational mode.Moreover, as shown in Figure 10, when twin-tub is run, from
The second pressure refrigerant of suction muffler is passed through at air inlet e1 and the mixed of suction muffler is flowed into via air intake passage 310 by intermediate cavity 23
Close refrigerant the inner place of air inlet e1 and air intake passage 310 can with PARALLEL FLOW, so as to reduce the flow losses of refrigerant,
Further improve the efficiency of rotary compressor 100.
Certainly, air inlet e1 is additionally formed on lower cylinder 32 or dividing plate 33, the correspondence on lower cylinder 32 or dividing plate 33
Opening position is communicated with the communicating passage of intermediate cavity 23 and upper cylinder 31.
In some specific examples of the present invention, dividing plate 33 can include two sub-dividing plates, be limited between two sub-dividing plates
Go out intermediate cavity 23.For example, two sub-dividing plates can be the first partition 331 and second partition set in the vertical direction respectively
332, first partition 331 is horizontally extending and is located at the top of second partition 332, and the upper end of second partition 332 can be with shape
Into cavity, now intermediate cavity 23 can be limited (not shown) jointly by the two sub-dividing plates.Wherein, air inlet e1 and exhaust
Mouth can be formed in one of them in two sub-dividing plates, for example, air inlet e1 and exhaust outlet can be both formed in second every
On plate 332 (not shown).Certainly, air inlet e1 is additionally formed in one of them in two cylinders, for example, such as Fig. 9
Shown in Figure 10, air inlet e1 is formed on upper cylinder 31.
It is, of course, also possible to it is the lower end formation cavity of first partition 331, second partition 332 is horizontally extending and sets
In the lower section of first partition 331, wherein, air inlet e1 and exhaust outlet can be both formed in first partition 331 (not shown).
In embodiment as shown in Figs. 7-8, injection valve can also be located at the injection channel 60 on second partition 332
Place, through hole 64 through first partition 331 and can connect the compression chamber of upper cylinder 31 in the vertical direction, when injection valve is opened
When, injection channel 60 connects with through hole 64, and now the compression chamber of upper cylinder 31 can connect with injection channel 60, so as to
Second pressure refrigerant is passed through in compression chamber.
According to some embodiments of the present invention, could be formed with compression mechanism 2 and above-mentioned wherein one in two cylinders
The jet 65 of individual compression chamber connection, injection valve are configured to when in the above-mentioned compression chamber of one of them in two cylinders
Pressure opens jet 65, when in the above-mentioned compression chamber of one of them in two cylinders when being less than the pressure of second pressure refrigerant
Pressure be more than second pressure refrigerant pressure when close jet 65.For example, as shown in figure 4, injection channel 60 can be formed
Extend from outside to inside on upper cylinder 31 and along the radial direction of upper cylinder 31, injection channel 60 passes through jet 65 and upper cylinder 31
Compression chamber connects.And for example, as shown in figure 8, jet 65 can also be located on second partition 332, such as jet 65 can be by
A part for the upper surface of second partition 332 is downwardly concaved to be formed and connected with the injection channel 60 radially extended, jet 65
Connected by the through hole 64 in first partition 331 with the compression chamber of upper cylinder 31.
As shown in figure 5, in some embodiments of the invention, injection valve can include injection valve block 63 and for limiting spray
The lift stopper 62 of the motion of valve block 63 is penetrated, lift stopper 62 can be located at the one of the remote jet 65 of injection valve block 63
Side, lift stopper 62 and injection valve block 63 spray valve block for example, by being arranged on for the grade of screw 61 fastener at jet 65
63 break-make for controlling jet 65 and the compression chamber of upper cylinder 31.When the pressure of refrigerant in compression chamber is higher than injection channel 60
During the pressure of interior second pressure refrigerant, injection valve block 63 blocks jet 65, so as to avoid the refrigerant in compression chamber from returning
Flow in injection channel 60；When the pressure of refrigerant in compression chamber is less than the pressure of the second pressure refrigerant in injection channel 60,
Spray valve block 63 and open jet 65, now the second pressure refrigerant in injection channel 60 can be injected into compression chamber, so as to
It can realize and injection increasing enthalpy is carried out to upper cylinder 31, improve the efficiency during operation of the single cylinder of upper cylinder 31.
Preferably, injection valve and jet 65 are each provided on above-mentioned one of them or the dividing plate 33 in two cylinders.For example,
As shown in figure 4, injection valve and jet 65 can be each provided on upper cylinder 31, so as to which second pressure refrigerant can be injected directly into
In the compression chamber of cylinder 31.And for example, as shown in figure 8, injection valve and jet 65 can be each provided on second partition 332, injection
Mouth 65 connects with the compression chamber of upper cylinder 31, so as to simplify the structure of upper cylinder 31.
Specifically, spraying one end of valve block 63 can be fixed on second partition 332, and the other end of injection valve block 63 covers
Cover on jet 65, lift stopper 62 is located at the top of injection valve block 63, and now second pressure refrigerant passes through injection channel
60 reach injection valve blocks 63 at, when second pressure refrigerant pressure be more than compression chamber in refrigerant pressure when, injection valve block 63 to
Upper motion, open jet 65 so that injection channel 60 to be connected with the through hole 64 in first partition 331, so as to injection channel 60 and
The compression chamber connection of upper cylinder 31, second pressure refrigerant can enter in the compression chamber of upper cylinder 31, when second pressure refrigerant
When pressure is less than the pressure of refrigerant in compression chamber, injection valve block 63 closes jet 65, and the second pressure in injection channel 60 is cold
Matchmaker will not enter in the compression chamber of upper cylinder 31, and can effectively prevent the backflow of refrigerant in the compression chamber of upper cylinder 31.Such as Fig. 8
The state of shown injection valve block 63 is to close the state of jet 65.
Certainly, particular determination is not done for the particular number of injection valve and jet 65, as long as ensureing that second pressure is cold
Matchmaker can carry out injection increasing enthalpy to rotary compressor 100.For example, two injection valves can be provided with compression mechanism 2
With corresponding two jets 65, can be further enhanced so as to the efficiency of rotary compressor 100.
The present invention other embodiments in, injection valve can be piston, now can by piston realization whether to
Second pressure refrigerant is passed through in the above-mentioned compression chamber of one of them in two cylinders, so as to simplify rotary compressor
100 structure.For example, as shown in Figs. 7-8, when injection valve is upper piston 312, through hole 64 can be located at first partition 331
The opening position that can be sheltered from completely by upper piston 312, so, it is logical that second pressure refrigerant from the second blow vent e3 sprays into injection
Road 60, then flow to by jet 65 at through hole 64, when upper piston 312 turns to the position for sheltering from through hole 64 completely,
Sealed condition is between the compression chamber of through hole 64 and upper cylinder 31, when upper piston 312 continues to rotate to partial occlusion or not
When blocking the position of through hole 64, through hole 64 connects with the compression chamber of upper cylinder 31, and now second pressure refrigerant can flow into the pressure
Contracting intracavitary, the injection increasing enthalpy of refrigerant in upper cylinder 31 is realized, further improve the efficiency of rotary compressor 100, and can subtracted
The influence of small clearance volume.
It is understood that in the embodiment shown in fig. 8, while upper piston 312 is as injection valve, second partition
It is also provided with spraying valve block 63 and lift stopper 62 on 332, again can be to prevent so as to can both reduce the influence of clearance volume
The only backflow of the refrigerant in the compression chamber of upper cylinder 31.
According to one embodiment of present invention, in base bearing 21 and supplementary bearing 22 with two cylinders it is above-mentioned another
The first magnetic element 7 for being suitable to slide plate corresponding to absorption can be provided with one of them of contact, so as to which slide plate can be with more stable
Ground is maintained in vane slot, will not be produced motion because air pressure inside fluctuates, be avoided slide plate from producing collision with piston or cylinder, subtract
The small abrasion of part, so as to improve the reliability of rotary compressor 100.For example, as shown in fig. 6, supplementary bearing 22 it is upper
It is located at the downslide in lower cylinder 32 formed with the first holding tank suitable for accommodating the first magnetic element 7, the first holding tank on surface
Piece 321a lower section, thus, by setting the first magnetic element in first holding tank, lower slide plate 321a can be more stably
It is maintained in vane slot.Certainly, when in two cylinders it is above-mentioned another be upper cylinder 31 when, the first magnetic element 7 can be with
The side (not shown) of the neighbouring upper cylinder 31 of base bearing 21 is located at, can be stably so as to the upper slide plate 311a of upper cylinder 31
It is maintained in vane slot.Alternatively, the first magnetic element 7 can be magnet.
Certainly, the invention is not restricted to this, according to other embodiments of the present invention, in neighbouring two cylinders of dividing plate 33
Another above-mentioned side is provided with the second magnetic element (not shown) for being suitable to slide plate corresponding to absorption.For example, dividing plate 33
The second holding tank suitable for accommodating the second magnetic element is could be formed with lower surface, the second holding tank is located in lower cylinder 32
Lower slide plate 321a top, thus, lower slide plate 321a more stably can be maintained in vane slot.
It is middle pressure refrigerant by low pressure refrigerant, second pressure refrigerant of first pressure refrigerant in the description below the application
Exemplified by illustrate.The rotary compressor of a specific embodiment according to the present invention is described in detail below with reference to Fig. 1-Fig. 6
100, it is worth understanding, simply exemplary illustration described below, and be not considered as limiting the invention.
As shown in figs 1 to 6, rotary compressor 100 according to embodiments of the present invention, including housing 1 and compression mechanism 2.
Wherein, compression mechanism 2 is located in housing 1, and housing 1 is externally provided with reservoir 5.
As shown in figure 1, control valve 4 can be triple valve, the first connecting tube a, the 3rd connecting tube c and the 4th connecting tube d's
One end connects with triple valve respectively, and the 4th connecting tube d other end connects with flash vessel (not shown), the second connecting tube b's
One end is connected with the 4th connecting tube d, and low pressure refrigerant is passed through in the 3rd connecting tube c, is passed through middle pressure refrigerant in the 4th connecting tube d, and three
Port valve controls in the first connecting tube a and is passed through low pressure refrigerant or middle pressure refrigerant.
Reference picture 2 simultaneously combines Fig. 6, compression mechanism 2 include base bearing 21, supplementary bearing 22, upper cylinder 31, lower cylinder 32, on
Slide plate 311a, lower slide plate 321a, upper piston 312 and lower piston 322.Wherein, upper cylinder 31 and lower cylinder 32 be in the vertical direction
Set, each cylinder has compression chamber and the vane slot connected with compression chamber, and two pistons are respectively along corresponding compression chamber
Wall can be rolled, and upper slide plate 311a is connected by spring 311b with vane slot, and lower slide plate 321a is located at pair with being not provided with spring 311b
Back pressure chamber 321b is limited in the vane slot answered and with the outer end of vane slot.The compression chamber of lower cylinder 32 has the first blow vent
E2, reservoir 5 is connected by air intake duct f with the first blow vent e2, so as to be passed through first pressure refrigerant into lower cylinder 32.
Dividing plate 33 is located between upper cylinder 31 and lower cylinder 32, and base bearing 21 and supplementary bearing 22 are respectively provided at the upper end of upper cylinder 31 with
The lower end of cylinder 32, the lower end of supplementary bearing 22, which is provided with, limits intermediate cavity 23 between cover plate 24 and supplementary bearing 22 and cover plate 24, in
Between on chamber 23 formed with air inlet e1 and exhaust outlet, the first connecting tube a connects with to intermediate cavity 23 through housing 1 with air inlet e1
Inside it is passed through low pressure refrigerant or middle pressure refrigerant.
Specifically, as shown in Fig. 2-Fig. 3 and Fig. 6, in cooling condition, reservoir 5 is passed through low pressure cold into intermediate cavity 23
Matchmaker, because intermediate cavity 23 connects with back pressure chamber 321b, so, and when low pressure refrigerant is entered in back pressure chamber 321b, lower slide plate 321a
The inner it is equal with the pressure suffered by outer end, now, lower slide plate 321a releases are failure to actuate, lower slide plate 321a not with lower piston 322
Only support, lower cylinder 32 unloads, and only upper cylinder 31 works, and rotary compressor 100 is in single cylinder operational mode.Simultaneously as
Intermediate cavity 23 connects with the suction muffler of upper cylinder 31 again, and the discharge chamber of lower cylinder 32 connects with intermediate cavity 23, so, intermediate cavity 23
Interior refrigerant is to be mixed by what the air inlet e1 low pressure refrigerants entered and the low pressure refrigerant discharged by the discharge chamber of lower cylinder 32 were formed
Refrigerant is closed, the mixing refrigerant is entered by intermediate cavity 23 in the suction muffler of upper cylinder 31, by the compression heel row of upper cylinder 31
Go out to outside upper cylinder 31.
In heating condition, rotary compressor 100 is in twin-tub operational mode, during flash vessel is passed through into intermediate cavity 23
Refrigerant is pressed, now descends the pressure suffered by the inner of pressure more than lower slide plate 321a suffered by slide plate 321a outer end, lower slide plate
321a inwardly stretches out vane slot only to be supported with lower piston 322 under inner and outer end differential pressure action, so as to which lower cylinder 32 loads
Work, compresses the low pressure refrigerant from reservoir 5, the refrigerant in such intermediate cavity 23 compressed for lower cylinder 32 after refrigerant and by
Air inlet e1 is passed through the mixing refrigerant of the middle pressure refrigerant in intermediate cavity 23, after the mixing refrigerant enters the suction muffler of upper cylinder 31,
Pass through the further compression of upper cylinder 31 again, the higher refrigerant of the pressure after compressing afterwards is expelled to outside upper cylinder 31, is realized cold
The Two-stage Compression of matchmaker.
Further, since during Two-stage Compression, the pressure difference at lower slide plate 321a both ends is low pressure refrigerant and the middle pressure pressed between refrigerant
Difference, it is small so as to the pressure difference at lower slide plate 321a both ends, it can further reduce lower slide plate 321a abrasion.
As shown in Figure 1 and Figure 4, the second connecting tube b other end is stretched into injection channel 60 through housing 1, injection channel
60 form on upper cylinder 31 and extend from outside to inside along the radial direction of upper cylinder 31, and injection channel 60 passes through jet 65 and upper gas
The compression chamber connection of cylinder 31.As shown in figure 5, injection valve includes injection valve block 63 and lift stopper 62, the one of valve block 63 is sprayed
End is arranged on upper cylinder 31 by screw 61, and the other end of injection valve block 63 is covered at jet 65, so, works as compression chamber
When the pressure of interior refrigerant is higher than the pressure of the middle pressure refrigerant in injection channel 60, injection valve block 63 closes jet 65, so as to
To avoid the refrigerant return in compression chamber in injection channel 60, when the pressure of refrigerant in compression chamber is less than in injection channel 60
During the pressure of middle pressure refrigerant, injection valve block 63 opens jet 65, and now the middle pressure refrigerant in injection channel 60 can be injected into
In compression chamber, injection increasing enthalpy is carried out to upper cylinder 31 so as to realize, improves the efficiency during operation of the single cylinder of upper cylinder 31.
As shown in fig. 6, on the upper surface of supplementary bearing 22 formed with suitable for accommodate the first magnetic element 7 the first holding tank,
First holding tank is located at the lower section of the lower slide plate 321a in lower cylinder 32, and thus, lower slide plate 321a can be more stably maintained at
In vane slot, motion will not be produced because air pressure inside fluctuates, avoid slide plate from producing collision with piston or cylinder, reduce part
Abrasion, so as to improve the reliability of rotary compressor 100.
As Figure 1-Figure 2, rotary compressor 100 also includes stator 81, rotor 82, bent axle 9, muffler 91 and upstream
Blade 92, these parts are all to those skilled in the art known, are not detailed herein.
Rotary compressor 100 according to embodiments of the present invention, by supplementary bearing 22 formed with intermediate cavity 23, upper
Cylinder 31 is provided with injection valve, and thus, rotary compressor 100 can be under single cylinder pattern under the cooling conditions such as centre refrigeration
Operation, rotary compressor 100 can be run under twin-tub pattern under heating condition, and by spraying upper cylinder 31
Increasing enthalpy, efficiency when upper cylinder 31 is run can be improved, it is high and simple in construction so as to the efficiency of rotary compressor 100.
The rotary compressor of another specific embodiment according to the present invention is described in detail below with reference to Fig. 7-Figure 10
100, it is worth understanding, simply exemplary illustration described below, and be not considered as limiting the invention.
As shown in fig. 7, dividing plate 33 includes first partition 331 and second partition 332, first partition 331 is located at second partition
332 top, and first partition 331 and second partition 332 are horizontally extending.As shown in figure 8, through hole 64 is in upper and lower
Extend upward through first partition 331 and be located at the opening position that can be sheltered from completely by upper piston 312, injection valve and jet 65 are equal
Be located on second partition 332, and jet 65 be downwardly concaved by a part for the upper surface of second partition 332 formed and with radially
The injection channel 60 of extension is connected, and jet 65 is connected by through hole 64 with the compression chamber of upper cylinder 31.
Specifically, the one end for spraying valve block 63 is fixed on second partition 332, and the other end of injection valve block 63 is covered in
On jet 65, lift stopper 62 is located at the top of injection valve block 63, and now middle pressure refrigerant is reached by injection channel 60 sprays
Penetrate at valve block 63, when upper piston 312 turns to the position for sheltering from through hole 64 completely, the compression chamber of through hole 64 and upper cylinder 31
Between be in sealed condition, when upper piston 312 continues to rotate to partial occlusion or does not block the position of through hole 64, through hole 64
Connected with the compression chamber of upper cylinder 31, now if the pressure of middle pressure refrigerant is more than the pressure of refrigerant in compression chamber, spray valve block
63 will move upwards, open jet 65, and middle pressure refrigerant can enter in the compression chamber of upper cylinder 31, and if middle pressure refrigerant
Pressure is less than the pressure of refrigerant in compression chamber, and injection valve block 63 will be moved downward to close jet 65.Injection as shown in Figure 8
The state of valve block 63 is to close the state of jet 65, and upper piston 312 turns to the opening position for blocking through hole 64 completely in figure.
As shown in figure 9, air inlet e1 runs through the periphery wall of upper cylinder 31, week of the air intake passage 310 substantially along upper cylinder 31
Extend to direction, and the inner radial direction along upper cylinder 31 of air intake passage 310 penetrates suction muffler, air inlet e1 leads to air-breathing
Road 310 connects, and such low pressure refrigerant or middle pressure refrigerant can be directly entered in upper cylinder 31 and be compressed, and without flowing through centre
Chamber 23.Moreover, as shown in Figure 10, when twin-tub is run, the middle pressure refrigerant of suction muffler is passed through at air inlet e1 and passes through centre
Chamber 23 flows into the mixing refrigerant of suction muffler via air intake passage 310 can be with the inner place of air inlet e1 and air intake passage 310
PARALLEL FLOW.
Rotary compressor 100 according to embodiments of the present invention, the compression chamber of clearance volume and upper cylinder 31 can be reduced
The influence of interior refrigerant return, so as to further improve the efficiency of rotary compressor 100.In addition, by by air inlet e1
It is located on upper cylinder 31, the situation of refrigerant overheat of the rotary compressor 100 when single cylinder is run can be effectively improved, can be subtracted
The flow losses of small rotary compressor 100 refrigerant when twin-tub is run, further improve rotary compressor 100
Efficiency.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (7)
- A kind of 1. rotary compressor, it is characterised in that including：Housing；Compression mechanism, the compression mechanism are located in the housing, and the compression mechanism includes base bearing, cylinder assembly, countershaft Hold, slide plate and piston, the base bearing and the supplementary bearing are respectively provided at the axial both ends of the cylinder assembly, the air cylinder group Part includes two cylinders and the dividing plate that is located between described two cylinders, each cylinder have compression chamber and with the compression The vane slot of chamber connection, inwall of the piston along the compression chamber can roll, and the compression chamber includes suction muffler and discharge chamber, The slide plate is movably arranged in the vane slot,The air inlet connected in wherein described compression mechanism formed with intermediate cavity and with the intermediate cavity, formed in the intermediate cavity There is exhaust outlet, the air inlet is used to be passed through first pressure refrigerant or second pressure refrigerant, second pressure into the intermediate cavity The pressure of refrigerant is higher than the pressure of first pressure refrigerant, the suction muffler of one of them in described two cylinders and the row Gas port connects, and another the discharge chamber in described two cylinders connects with the intermediate cavity, and in described two cylinders The rear portion of another the vane slot there is back pressure chamber, the back pressure chamber connects with the intermediate cavity；WithInjection valve, the injection valve be located in the compression mechanism for described in controlling whether into described two cylinders its In be passed through second pressure refrigerant in the compression chamber of one, in the compression mechanism formed with the institute in described two cylinders State one of them the compression chamber connection jet, the injection valve be configured to work as described two cylinders in it is described its In pressure in the compression chamber of one open the jet, when described two gas when being less than the pressure of second pressure refrigerant The pressure in the compression chamber of one of them in cylinder closes the jet when being more than the pressure of second pressure refrigerant.
- 2. rotary compressor according to claim 1, it is characterised in that the compression mechanism further comprises：Cover plate, the cover plate are located at the one of the remote cylinder assembly of one of them in the base bearing and the supplementary bearing Side, in the base bearing and the supplementary bearing it is described one of them the intermediate cavity is limited between the cover plate.
- 3. rotary compressor according to claim 2, it is characterised in that the air inlet formed in the base bearing and Described in the supplementary bearing is on one of them.
- 4. rotary compressor according to claim 1, it is characterised in that the air inlet is formed in described two cylinders In any one or the dividing plate on.
- 5. rotary compressor according to claim 1, it is characterised in that the injection valve and the jet are each provided at On one of them or the dividing plate in described two cylinders.
- 6. rotary compressor according to claim 1, it is characterised in that in the base bearing and the supplementary bearing with In described two cylinders it is described another contact one of them be provided be suitable to adsorb corresponding to the slide plate the first magnetic Property element.
- 7. rotary compressor according to claim 1, it is characterised in that in neighbouring described two cylinders of the dividing plate Another the side be provided be suitable to absorption corresponding to the slide plate the second magnetic element.
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| CN201510522240.2A CN105065272B (en) | 2015-08-24 | 2015-08-24 | Rotary compressor |
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| CN201510522240.2A CN105065272B (en) | 2015-08-24 | 2015-08-24 | Rotary compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134595B (en) * | 2015-09-17 | 2017-06-16 | 广东美芝制冷设备有限公司 | Compressor |
| CN105201838A (en) * | 2015-10-28 | 2015-12-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor compressor |
| CN105298840B (en) * | 2015-11-23 | 2017-07-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Multi-cylinder Dual-level enthalpy adding compressor and air-conditioner, Teat pump boiler and control method |
| CN107023963B (en) * | 2017-04-13 | 2020-11-27 | 青岛海尔空调器有限总公司 | Air conditioner and control method |
| CN111120325A (en) * | 2018-10-31 | 2020-05-08 | 广东美芝精密制造有限公司 | Pump body assembly for compressor and rotary compressor |
| CN114542468B (en) * | 2022-02-14 | 2023-07-18 | 广东美芝制冷设备有限公司 | Rotary compressor and heat pump equipment with same |
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