CN103883525B - Double-stage compressor - Google Patents
Double-stage compressor Download PDFInfo
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- CN103883525B CN103883525B CN201410103332.2A CN201410103332A CN103883525B CN 103883525 B CN103883525 B CN 103883525B CN 201410103332 A CN201410103332 A CN 201410103332A CN 103883525 B CN103883525 B CN 103883525B
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Abstract
The invention discloses a kind of double-stage compressor, including: housing；Compression mechanism, it is formed with air intake passage and jet chamber in compression mechanism, compression mechanism includes: firsts and seconds compression member, jet chamber is for receiving the aerofluxus of one stage of compression parts, air intake passage connection jet chamber and the air entry of two-stage compression parts, the afterbody of the slide plate of two-stage compression parts is adapted to communicate with enclosure interior；Variable capacity control mechanism, variable capacity control mechanism has jet chamber interface, pressure duct interface and middle pressure pipe interface, variable capacity control mechanism is arranged to can be by jet chamber interface and pressure duct interface or middle pressure pipe road orifice, the one stage of compression parts operation work when pressure duct orifice jet chamber interface, when middle pressure pipe interface is with jet chamber orifice, firsts and seconds compression member all runs work.The double-stage compressor of the present invention has single stage compress and Two-stage Compression both of which, and can be by the convenient switching of variable capacity control mechanism.
Description
Technical field
The present invention relates to compressor field, especially relate to a kind of double-stage compressor.
Background technology
Single-stage compressor has single cylinder structure, and operating mode is more single, it is impossible to realize transfiguration function.And double-stage compressor has double
Cylinder structure, it is possible to achieve Two-stage Compression, Two-stage Compression works due to two cylinders simultaneously, therefore can increase abrasion, also simultaneously
The situation of cold-producing medium overcompression may be caused, and simple double-stage compressor adds a set of throttle mechanism than single-stage compressor
With corresponding pipe arrangement, cold-producing medium flow resistance in systems can be deteriorated, reduce system energy efficiency further.
Summary of the invention
It is contemplated that solve one of above-mentioned technical problem of the prior art the most to a certain extent.
To this end, it is an object of the present invention to propose a kind of double-stage compressor, this double-stage compressor has single stage compress with double
Level compression both of which, and can be by the convenient switching of variable capacity control mechanism.
Double-stage compressor according to embodiments of the present invention, including: housing；Compression mechanism, described compression mechanism is located at described shell
Internal, it is formed with air intake passage and jet chamber in described compression mechanism, described compression mechanism includes: one stage of compression parts and two
Level compression member, described jet chamber is for receiving the aerofluxus of described one stage of compression parts, and described air intake passage connects described jet
Chamber and the air entry of described two-stage compression parts, the afterbody of the slide plate of described two-stage compression parts is adapted to communicate with described enclosure interior,
The pressure differential being suitable for the two ends by described slide plate controls described slide plate action；And variable capacity control mechanism, described transfiguration
Controlling organization at least has jet chamber interface, pressure duct interface and middle pressure pipe interface, described jet chamber interface and described spray
Air cavity connects, described variable capacity control mechanism be arranged to optionally by described jet chamber interface and described pressure duct interface or
Medium pressure pipe interface connects, the wherein described one stage of compression portion when jet chamber interface described in described pressure duct orifice
Part operation work, and the described one stage of compression parts and described two when medium pressure pipe interface is with described jet chamber orifice
Level compression member all runs work.
Double-stage compressor according to embodiments of the present invention, by variable capacity control mechanism switching jet chamber interface, pressure duct interface,
The conducting state of middle pressure pipe interface, such that it is able to conveniently realize twin-stage transfiguration function, so that implement according to the present invention
The double-stage compressor of example can be according to the change of service condition, when load is less, selects single-stage to run, and when load is big,
Selection twin-stage runs, and then is greatly improved the Performance And Reliability of compressor.
Additionally, between single-stage and twin-stage during conversion, only the conducting state of interface on variable capacity control mechanism need to be controlled, control
System is convenient, simple, it is easy to accomplish.
It addition, double-stage compressor according to embodiments of the present invention, it is also possible to have a following additional technical feature:
According to some embodiments of the present invention, described variable capacity control mechanism includes: control valve, wherein said jet chamber interface,
Described pressure duct interface and medium pressure pipe interface are respectively formed in described control valve, and described control valve at least can be by institute
State jet chamber interface to connect with described pressure duct interface or medium pressure pipe interface.
According to some embodiments of the present invention, described control valve is three-way valve；And described variable capacity control mechanism also includes: spray
Air cavity adapter, high pressure coolant adapter and middle pressure coolant adapter, described jet chamber adapter one end extend into described jet intracavity and
The other end is connected with described jet chamber interface, and one end of described high pressure coolant adapter is connected and another with described pressure duct interface
End is connected with the exhaustor of described case top, and one end of medium pressure coolant adapter is connected and the other end with middle pressure pipe interface
Be suitable to be connected with flash vessel.
According to some embodiments of the present invention, in described compression mechanism, it is also formed with exhaust passage, one end of described exhaust passage
Connect with described jet chamber and the other end connects with described enclosure interior；And described double-stage compressor also includes: one-way conduction
Mechanism, in described one-way conduction mechanism is located at described exhaust passage and be arranged to from described jet chamber towards in described housing
The direction in portion uniaxially turns on described exhaust passage.
According to some embodiments of the present invention, the sectional dimension of a part for described exhaust passage diminishes to form the section of narrowing；With
And described one-way conduction mechanism is for guiding spheroid, described guiding spheroid be arranged at described in the top of the section of narrowing, described guiding spheroid
Diameter be more than described in the section of narrowing diameter and less than the diameter of described exhaust passage remainder.
According to some embodiments of the present invention, described double-stage compressor also includes: magnetics, and described magnetics is arranged to
When jet chamber interface described in the pressure duct orifice of described variable capacity control mechanism, described two grades of described magnetics absorption
The slide plate of compression member is so that described slide plate is accommodated in the vane slot of described two-stage compression parts.
According to some embodiments of the present invention, between described one stage of compression parts and described two-stage compression parts, it is folded with middle interval
Plate, described magnetics is Magnet and is arranged on described central dividing plate.
According to some embodiments of the present invention, the side towards described two-stage compression parts of described central dividing plate is provided with peace
Dress groove, described Magnet is located in described installation groove.
According to some embodiments of the present invention, described two-stage compression parts are positioned at above described one stage of compression parts, and described two
Level compression member includes upper cylinder, base bearing, is formed with vane slot, is provided with in described upper vane slot in described upper cylinder
Upper slide plate, the slide plate of wherein said two-stage compression parts is described upper slide plate, and the vane slot of described two-stage compression parts is described
Upper vane slot；And described one stage of compression parts include that lower cylinder, supplementary bearing and cover plate, described cover plate are located at described supplementary bearing
Bottom surface to limit described jet chamber between described cover plate and described supplementary bearing, be formed with lower vane slot in described lower cylinder,
It is provided with lower slide plate in described lower vane slot.
According to some embodiments of the present invention, the afterbody of described lower slide plate is provided with sliding blade spring, the afterbody of described lower vane slot by
Sealing duct occlusion and form back pressure cavity with the afterbody at described lower vane slot, described back pressure cavity connects with described jet chamber；Or institute
State jet chamber and there is puff prot, described jet chamber by described puff prot and described jet chamber orifice, described back pressure cavity with
Described puff prot is connected.
Accompanying drawing explanation
Fig. 1 is the front view of double-stage compressor according to an embodiment of the invention；
Fig. 2 is the schematic diagram of double-stage compressor according to an embodiment of the invention；
Fig. 3-Fig. 5 is the schematic diagram of the compression mechanism of some of them embodiment；
Fig. 6 is the schematic diagram at exhaust passage；
Fig. 7 is the side view of compression mechanism；
Fig. 8 is to compress mechanism's sectional view at jet chamber shown in Fig. 7.
Reference:
Double-stage compressor 100；
Housing 1, exhaustor 11；
Deafener 21, base bearing 22, upper cylinder 23, central dividing plate 24, lower cylinder 25, supplementary bearing 26, cover plate 27, on
Piston 28, lower piston 29；
Drive motor 3；
Variable capacity control mechanism 4, jet chamber interface 41, pressure duct interface 42, middle pressure pipe interface 43, jet chamber adapter 44,
High pressure coolant adapter 45, middle pressure coolant adapter 46；
Jet chamber 51, puff prot 511, exhaust passage 52, the section of narrowing 521, one-way conduction mechanism 53；
Upper slide plate 61, upper vane slot 62, magnetics 63, lower slide plate 64, back pressure cavity 65, sliding blade spring 66, seal pipe
67, center-aisle 68, lower vane slot 69.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most identical
Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ",
Orientation or the position relationship of the instruction such as " outward ", " clockwise ", " counterclockwise " are based on orientation shown in the drawings or position relationship,
It is for only for ease of the description present invention and simplifies description rather than instruction or imply that the device of indication or element must have specific
Orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed
Or implicitly include one or more this feature.In describing the invention, " multiple " are meant that two or two
Above, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing "
Should be interpreted broadly Deng term, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be
It is mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of individual element internal or the interaction relationship of two elements.For the ordinary skill in the art, Ke Yigen
Above-mentioned term concrete meaning in the present invention is understood according to concrete condition.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score
Can include that the first and second features directly contact, it is also possible to include that the first and second features are not directly contact but logical
Cross the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " on
Face " include that fisrt feature directly over second feature and oblique upper, or is merely representative of fisrt feature level height higher than the
Two features.Fisrt feature second feature " under ", " lower section " and " below " include that fisrt feature is special second
Levy underface and obliquely downward, or be merely representative of fisrt feature level height less than second feature.
Double-stage compressor 100 according to embodiments of the present invention, this double-stage compressor 100 is described in detail below with reference to Fig. 1-Fig. 8
May be used in refrigeration system.
Double-stage compressor 100 according to some embodiments of the invention can include housing 1, compression mechanism, drives motor 3 and become
Hold controlling organization 4 parts such as grade.
Housing 1 can include main casing, is located at the upper shell above main casing and is located at the lower house below main casing, main
Can be welded and fixed between housing and upper shell and main casing and lower house, it is special that the present invention does not make for the structure of housing 1
Limit.
Compression mechanism is located in housing 1, and such as compression mechanism can be fixed on the internal face of housing 1, but is not limited to this.
Compression mechanism has double-cylinder structure, thus realizes Two-stage Compression function.Compression mechanism can include that one stage of compression parts (include
The parts such as lower cylinder 25, lower piston 29, lower slide plate 64), two-stage compression parts (include upper cylinder 23, upper piston 28,
Upper slide plate 61 parts such as grade), the parts such as central dividing plate 24.
Two-stage compression parts may be located at above one stage of compression parts, and two-stage compression parts can be drawn through one stage of compression portion
The aerofluxus of part compression, carries out second-compressed to aerofluxus, and the aerofluxus of two-stage compression parts can be drained in deafener 21, aerofluxus
Finally can be drained into housing 1 from deafener 21 internal, this portion discharge can be directly from being positioned at shell after having cooled down driving motor 3
The exhaustor 11 at body 1 top is discharged.
In conjunction with Fig. 2-Fig. 5, the specific configuration of compression mechanism will be described in detail below.Wherein one stage of compression parts are permissible
The parts such as including lower cylinder 25, supplementary bearing 26 and cover plate 27, two-stage compression parts can include upper cylinder 23, base bearing
22 parts such as grade.Wherein upper cylinder 23 is located at the end face of central dividing plate 24, and base bearing 22 is located at the end face of upper cylinder 23, disappears
Sound device 21 can be located on base bearing 22 for noise reduction, and lower cylinder 25 is located at the bottom surface of central dividing plate 24, and supplementary bearing 26 sets
In the bottom surface of lower cylinder 25, cover plate 27 can be located at the bottom surface of supplementary bearing 26, thus between cover plate 27 and supplementary bearing 26
Limit jet chamber 51.
Jet chamber 51 is for receiving the aerofluxus of one stage of compression parts, i.e. aerofluxus after one stage of compression component compresses can be passed through
Drain tap enters in jet chamber 51.The air entry of air intake passage connection jet chamber 51 and two-stage compression parts is (that is, on
The air entry of cylinder 23), i.e. one-level aerofluxus in jet chamber 51 can be inhaled in two-stage compression parts along air intake passage
Carry out second-compressed.Air intake passage can be through supplementary bearing 26, lower cylinder 25 and the passage of central dividing plate 24, but does not limits
In this.
As shown in Figure 4 and Figure 5, it is also formed with vane slot 62 in upper cylinder 23, in upper vane slot 62, is provided with slide plate
61, upper slide plate 61 can be along the action of upper vane slot 62, and the head end (i.e. going up the tip of slide plate 61) of upper slide plate 61 can be stretched
Entering in upper cylinder 23 and be suitably against on the outer peripheral face of upper piston 28, now two-stage compression parts can run work.
Certainly, the head end of upper slide plate 61 can also separate with the outer peripheral face of upper piston 28, now upper piston 28 idle running, two grades of pressures
Contracting parts are not compressed work to coolant.
As shown in Figure 4 and Figure 5, the afterbody (i.e. relative with upper slide plate 61 head end one end) of upper slide plate 61 is adapted to communicate with shell
Body 1 is internal, and in other words, the afterbody of upper vane slot 62 is connection enclosure interior, such as, go up vane slot 62 and can have even
Logical opening within housing 1.Thus, the high back pressure set up in compressor 100 runs back casing 1 can act on slide plate
The afterbody of 61, thus upper slide plate 61 is under the effect of the pressure differential (i.e. head and the pressure differential of afterbody) at upper slide plate 61 two ends
Can action in upper vane slot 62.
Such as, when pressing coolant in two-stage compression parts suck, middle pressure coolant acts on the head end of slide plate 61, and upper slide plate
61 afterbodys are connection housing 1 inner high voltage aerofluxuss, therefore go up slide plate 61 and will be resisted against outside upper piston 28 under differential pressure action
On side face, thus the coolant entered in two-stage compression parts can be compressed by two-stage compression parts.
And two-stage compression parts suck high pressure coolant time, the head end of upper slide plate 61 and afterbody all by the pressure of high pressure coolant,
This pressure is in a basic balance, thus upper slide plate 61 can separate with the outer peripheral face of upper piston 28, and then upper piston 28 dallies, now
Two-stage compression parts are equivalent to quit work.
It should be appreciated that in each embodiment shown in the present invention, the slide plate of two-stage compression parts refers to slide plate 61,
And the vane slot of two-stage compression parts refers to vane slot 62.
It addition, in each embodiment shown in the present invention, upper slide plate 61 carrys out control action by pressure reduction, i.e. by pressure
Difference realize slide plate 61 and upper piston 28 outer peripheral face against or separate, the afterbody of upper slide plate 61 can be not provided with traditional
Sliding blade spring.
Similarly, as shown in Figure 4 and Figure 5, it is formed with lower vane slot 69 in lower cylinder 25, is provided with in lower vane slot 69
Lower slide plate 64.Lower slide plate 64 can be along the action of lower vane slot 69, the head end (i.e. descending the tip of slide plate 64) of lower slide plate 64
In lower cylinder 25 can be extend into and be suitably against on the outer peripheral face of lower piston 29, now one stage of compression parts operation work.
The afterbody of lower slide plate 64 can be provided with sliding blade spring 66, thus ensures that the tip of lower slide plate 64 is often resisted against lower piston 29
Outer peripheral face on, i.e. one stage of compression parts double-stage compressor 100 start after run always.
With reference to Fig. 2 and combine shown in Fig. 1, variable capacity control mechanism 4 at least has jet chamber interface 41, pressure duct interface 42
With middle pressure pipe interface 43, wherein jet chamber interface 41 connects with jet chamber 51, and pressure duct interface 42 is adapted to communicate with height
Pressure gas, middle pressure pipe interface 43 is adapted to communicate with middle pressure coolant.Here it is possible to be understood by, above-mentioned high pressure gas is (i.e.,
High pressure coolant) pressure be greater than the pressure of middle pressure coolant, above-mentioned high pressure gas can be the height discharged at exhaustor 11
Pressure coolant, above-mentioned middle pressure coolant can be by flash vessel in such as refrigeration system after middle pressure coolant, but be not limited to this.
In short, the pressure of the high pressure coolant of pressure duct interface 42 connection is of substantially equal with the pressure at expulsion within housing 1
(such as, be equal or slightly less than), and the middle pressure being less than this pressure duct interface 42 that middle pressure pipe interface 43 connects is cold
Matchmaker, the outer peripheral face that these two bursts of pressure differentials can drive slide plate 61 to be resisted against upper piston 28 after acting on the two ends of slide plate 61
On so that two-stage compression parts can be properly functioning.
Variable capacity control mechanism 4 is arranged to optionally be connect with pressure duct interface 42 or middle pressure pipe road by jet chamber interface 41
Mouth 43 connection.In other words, variable capacity control mechanism 4 at least can realize following two conduction mode: jet chamber interface 41 with
Pressure duct interface 42 turns on, and now jet chamber interface 41 cuts off with middle pressure pipe interface 43；Or jet chamber interface 41
Cut off with pressure duct interface 42, and jet chamber interface 41 turns on middle pressure pipe interface 43.
So, when pressure duct interface 42 connects jet chamber interface 41, high pressure coolant is entered by variable capacity control mechanism 4
In jet chamber 51, now in jet chamber 51, coolant pressure is internal with housing 1 is roughly the same, is the most all high pressure coolant,
Therefore the coolant that two-stage compression parts are sucked by air intake passage is also high pressure coolant, thus acts on the pressure at slide plate 61 two ends
Difference is essentially identical, and upper slide plate 61 is failure to actuate, thus upper cylinder 23 unloads.
And lower slide plate 64 can be kept, by sliding blade spring 66, the state that pushes against lower piston 29, therefore lower cylinder 25 works.Letter
Yan Zhi, when pressure duct interface 42 connects jet chamber interface 41, one stage of compression parts operation work, two-stage compression parts
Do not work.
And when middle pressure pipe interface 43 connects with jet chamber interface 41, middle pressure coolant is entered into by variable capacity control mechanism 4
In jet chamber 51, pressing the pressure pressure less than housing 1 internal high pressure coolant of coolant in this, two-stage compression parts can pass through
Air intake passage, by pressing coolant to be drawn in two-stage compression parts in this, is now gone up slide plate 61 two ends and be there is pressure differential, at this pressure
Under the effect of difference, upper slide plate 61 will be resisted against on upper piston 28, so that upper piston 28 can be to entering in upper cylinder 23
Coolant be compressed.
Now descending slide plate 64 still can keep pushing against by sliding blade spring 66 state of lower piston 29, therefore lower cylinder 25 is still located
In duty.In short, when middle pressure pipe interface 43 connects with jet chamber interface 41, one stage of compression parts and two grades
Compression member all runs work.
Thus, double-stage compressor 100 according to embodiments of the present invention, by variable capacity control mechanism 4 switch jet chamber interface 41,
Pressure duct interface 42, the conducting state of middle pressure pipe interface 43, such that it is able to conveniently realize twin-stage transfiguration function, from
And make the double-stage compressor 100 according to embodiments of the present invention can be according to the change of service condition, and when load is less, choosing
Select single-stage to run, and when load is big, select twin-stage to run, and then be greatly improved the Performance And Reliability of compressor 100.
Additionally, between single-stage and twin-stage during conversion, only the conducting state of interface on variable capacity control mechanism 4 need to be controlled,
It is easy to control, simple, it is easy to accomplish.
In certain embodiments, as depicted in figs. 1 and 2, variable capacity control mechanism 4 includes control valve, wherein jet chamber interface
41, pressure duct interface 42 and middle pressure pipe interface 43 are respectively formed in control valve, and jet chamber at least can be connect by control valve
Mouth 41 connects with pressure duct interface 42 or middle pressure pipe interface 43.
Variable capacity control mechanism 4 is set to valve arrangement and can switch compressor more easily between single stage compress and Two-stage Compression
The operational mode of 100.
Further, control valve can be three-way valve, and three valve ports of this three-way valve are above-mentioned jet chamber interface 41, high respectively
Pressure pipe interface 42 and middle pressure pipe interface 43, three-way valve can make jet chamber to be electromagnetic valve form by Electromagnetic Control
Interface 41 turns on pressure duct interface 42 or middle pressure pipe interface 43.It is to be understood that control valve does not limit
In three-way valve, control valve can also is that other valve arrangement such as cross valve.
Shown in seeing figures.1.and.2, can be connected by jet chamber adapter 44 between jet chamber interface 41 and jet chamber 51,
In other words, one end of jet chamber adapter 44 can extend in jet chamber 51, the outer wall of jet chamber adapter 44 and jet chamber
The inwall of 51 can seal cooperation, prevents coolant from leaking, and the other end of jet chamber adapter 44 is then connected with jet chamber interface 41.
Similarly, pressure duct interface 42 can also connect high pressure gas by high pressure coolant adapter 45, and middle pressure pipe road connects
Mouth 43 can press coolant in being connected by middle pressure coolant adapter 46.
Such as, one end of high pressure coolant adapter 45 can be connected with pressure duct interface 42 and the other end can be with housing 1 top
Exhaustor 11 is connected.And one end of middle pressure coolant adapter 46 can be connected with middle pressure pipe interface 43 and the other end be suitable to such as
Flash vessel in refrigeration system is connected.
Owing to exhaust resistance is related to smooth in exhaust, and smooth in exhaust is the key factor affecting compressor 100 efficiency.
In view of this, according to some embodiments of the present invention, as shown in Figure 6, it is also formed with exhaust passage 52 in compression mechanism, row
One end of gas passage 52 connects with jet chamber 51 and the other end is internal with housing 1 connects.It is provided with unidirectional in exhaust passage 52
Conduction mechanism 53, this one-way conduction mechanism 53 is arranged to uniaxially lead towards the direction within housing 1 from jet chamber 51
Logical exhaust passage 52.
Such as, in the example of fig. 6, it is direction from bottom to top from jet chamber 51 towards the direction within housing 1, the most just
Being to say, in these examples, one-way conduction mechanism 53 can uniaxially turn on exhaust passage 52 according to direction from bottom to top,
I.e. aerofluxus in jet chamber 51 can flow to housing 1 inside from bottom to top, and the cold media gas within housing 1 cannot be reverse
Entered in jet chamber 51 by exhaust passage 52 from the top down.In the example of fig. 6, the upper end of exhaust passage 52 is permissible
Directly open wide with connection housing 1 internal.
By arranging exhaust passage 52, grate flow channel can be effectively increased, strengthen circulation area, thus reduce compressor 100
Exhaust resistance when single-stage is run, makes aerofluxus more smoothly, improves single-stage operational energy efficiency.
As the optional embodiment of one, the sectional dimension of a part for exhaust passage 52 diminishes to form the section of narrowing 521,
The section of narrowing 521 can be uiform section structure.In this embodiment, one-way conduction mechanism 53 can be to guide spheroid, SDeflector
Body is arranged and the top of the section of narrowing 521, guide the diameter of spheroid more than the diameter of the section of narrowing 521 and less than exhaust passage 52 its
The diameter that remaining part is divided.
Thus, when compressor 100 is in single-stage operation, guiding spheroid can upwards be beated thus be opened the section of narrowing 521, aerofluxus
Can be drained into inside housing 1 by exhaust passage 52, and when compressor 100 is in twin-stage operation, guiding spheroid can
To be still in the top of the section of narrowing 521, owing to guiding the diameter diameter more than the section of narrowing 521 of spheroid, therefore guide spheroid
The section of narrowing 521 can be closed and then close exhaust passage 52, so that the coolant in jet chamber 51 can be preferably by two
Level compression member sucks and is re-compressed, and improves Two-stage Compression efficiency.
Owing to double-stage compressor 100 is when single-stage is run, the slide plate (i.e. going up slide plate) of two-stage compression parts may be because of two grades
The cylinder interior air pressure fluctuation of compression member and produce motion, increase the abrasion of this slide plate.It is therefore preferred that Two-stage Compression
Machine 100 can also arrange magnetics 63, and magnetics 63 is arranged in the pressure duct interface 42 of variable capacity control mechanism 4
During connection jet chamber interface 41, magnetics 63 adsorbs the slide plate of two-stage compression parts so that this slide plate is accommodated in two-stage compression
In the vane slot of parts.
In other words, when double-stage compressor 100 is in single-stage operation, magnetics 63 can adsorb slide plate 61, so that
Must go up slide plate 61 to be accommodated in vane slot 62, upper slide plate 61 separates with upper piston 28, it is to avoid upper slide plate 61 is due to air pressure
Fluctuate and move in upper vane slot 62, be substantially reduced the abrasion between slide plate 61 and upper vane slot 62 and upper cylinder 23,
Thus substantially increase the service life of slide plate 61.
It is to be appreciated that magnetics 63 should be suitable to the magnetic attraction of upper slide plate 61, specifically, at Two-stage Compression
When machine 100 is in twin-stage operational mode, slide plate in pushing and pressing 61 is resisted against upper piston by the pressure differential suffered by upper slide plate 61 two ends
On the outer peripheral face of 28, now this pressure differential can overcome the magnetic attraction of magnetics 63, to ensure double-stage compressor 100 energy
Enough realize Two-stage Compression function.
Alternatively, magnetics 63 can be Magnet and be arranged on central dividing plate 24.Such as, central dividing plate 24 towards
Can be provided with installation groove on the side of two-stage compression parts, Magnet can be arranged in installation groove.
But, the present invention is not limited to this, and magnetics 63 is not limited to above-mentioned magnet arrangement, the peace of magnetics 63
In holding position is also not limited to central dividing plate 24 and the forms such as groove are installed.Such as, magnetics 63 can also is that electromagnetism
Ferrum, magnetics 63 can also be arranged on base bearing 22 or the afterbody of upper vane slot.
According to some currently preferred embodiments of the present invention, as it is shown in figure 5, the afterbody of lower vane slot 69 can be closed by sealing pipe 67,
Vane slot 69 is i.e. descended not to connect with housing 1 inside, thus in the afterbody formation back pressure cavity 65 of lower vane slot 69, this back pressure
Chamber 65 can connect with jet chamber 51.
Thus, the air pressure in jet chamber 51 can be incorporated in back pressure cavity 65, when compressor 100 single-stage is run, and air pressure
Introducing lower slide plate 64 is not had Special Influence.But when compressor 100 twin-stage runs, due to the air pressure in jet chamber 51
For middle pressure, it is also therefore middle pressure in back pressure cavity 65, thus before comparing, back pressure is greatly reduced, and then reduce to a certain extent
Friction between time slide plate 64 and lower piston 29, reduces the abrasion (power) of double-stage compressor 100, protects simultaneously
Lower slide plate 64, adds the life-span of lower slide plate 64.
In another embodiment, jet chamber 51 has puff prot 511(as shown in Figure 3), puff prot is passed through in jet chamber 51
511 connect with jet chamber interface 41, and back pressure cavity 65 can be connected with puff prot 511, in other words, and back pressure cavity 65 and jet chamber
The communicating position of 51 there occurs change, and in this embodiment, back pressure cavity 65 connects at the oral area i.e. puff prot 511 in jet chamber 51.
Owing to the pressure at puff prot 511 is internal compared with jet chamber 51 little by two-stage compression parts air-breathing influence of fluctuations, therefore jet
Air pressure at mouth 511 is more stable, thus can be that back pressure cavity 65 provides more stably back pressure, it is ensured that the action of lower slide plate 64
Reliably.
With reference to shown in Fig. 7 and Fig. 8, schematically showing back pressure cavity 65 in Fig. 7 and Fig. 8 is to pass through with puff prot 511
Between passage 68 and connect.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or
Feature is contained at least one embodiment or the example of the present invention.In this manual, the schematic representation to above-mentioned term
Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible
Any one or more embodiments or example combine in an appropriate manner.Additionally, those skilled in the art can be by
Different embodiments or example described in this specification engage and combine.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exemplary,
Being not considered as limiting the invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, revises, replaces and modification.
Claims (10)
1. a double-stage compressor, it is characterised in that including:
Housing；
Driving motor, described driving motor is arranged in described housing；
Compression mechanism, in described compression mechanism is located at described housing and is driven by described driving motor, is formed in described compression mechanism
Air intake passage and jet chamber, described compression mechanism is had to include:
One stage of compression parts and two-stage compression parts, described jet chamber is for receiving the aerofluxus of described one stage of compression parts, described suction
Jet chamber described in gas channel connection and the air entry of described two-stage compression parts, the afterbody of the slide plate of described two-stage compression parts is suitable to
Connecting described enclosure interior, the pressure differential being suitable for the two ends by described slide plate controls described slide plate action；And
Variable capacity control mechanism, described variable capacity control mechanism at least has jet chamber interface, pressure duct interface and middle pressure pipe interface,
Described jet chamber interface connects with described jet chamber, and described variable capacity control mechanism is arranged to optionally by described jet chamber interface
Connect with described pressure duct interface or medium pressure pipe interface, wherein connect in jet chamber described in described pressure duct orifice
Described one stage of compression parts operation work during mouth, the described one-level pressure when medium pressure pipe interface is with described jet chamber orifice
Contracting parts and described two-stage compression parts all run work.
Double-stage compressor the most according to claim 1, it is characterised in that described variable capacity control mechanism includes:
Control valve, wherein said jet chamber interface, described pressure duct interface and medium pressure pipe interface are respectively formed at described
In control valve, described jet chamber interface at least can be connected by described control valve with described pressure duct interface or medium pressure pipe interface
Logical.
Double-stage compressor the most according to claim 2, it is characterised in that described control valve is three-way valve；And
Described variable capacity control mechanism also includes: the adapter of jet chamber, the adapter of high pressure coolant and the adapter of middle pressure coolant, described jet chamber connects
One end of pipe extend into described jet intracavity and the other end and is connected with described jet chamber interface, described high pressure coolant adapter one end with
Described pressure duct interface be connected and the other end be connected with the exhaustor of described case top, medium pressure coolant adapter one end and
Middle pressure pipe interface is connected and the other end is suitable to be connected with flash vessel.
Double-stage compressor the most according to claim 1, it is characterised in that be also formed with aerofluxus in described compression mechanism and lead to
Road, one end of described exhaust passage connects with described jet chamber and the other end connects with described enclosure interior；And
Described double-stage compressor also includes: one-way conduction mechanism, in described one-way conduction mechanism is located at described exhaust passage and arrange
Become uniaxially to turn on described exhaust passage according to from described jet chamber towards the direction of described enclosure interior.
Double-stage compressor the most according to claim 4, it is characterised in that the cross section chi of a part for described exhaust passage
Very little diminish to form the section of narrowing；And
Described one-way conduction mechanism for guiding spheroid, described guiding spheroid be arranged at described in the top of the section of narrowing, described guiding spheroid
Diameter be more than described in the section of narrowing diameter and less than the diameter of described exhaust passage remainder.
6. according to the double-stage compressor according to any one of claim 1-5, it is characterised in that also include: magnetics,
When described magnetics is arranged in jet chamber interface described in the pressure duct orifice of described variable capacity control mechanism, described magnetic
Element adsorbs the slide plate of described two-stage compression parts so that described slide plate is accommodated in the vane slot of described two-stage compression parts.
Double-stage compressor the most according to claim 6, it is characterised in that described one stage of compression parts and described two grades of pressures
Being folded with central dividing plate between contracting parts, described magnetics is Magnet and is arranged on described central dividing plate.
Double-stage compressor the most according to claim 7, it is characterised in that described central dividing plate towards described two grades of pressures
Being provided with installation groove on the side of contracting parts, described Magnet is located in described installation groove.
Double-stage compressor the most according to claim 7, it is characterised in that
Described two-stage compression parts are positioned at above described one stage of compression parts, and described two-stage compression parts include upper cylinder, main shaft
Hold, in described upper cylinder, be formed with vane slot, in described upper vane slot, be provided with slide plate, wherein said two-stage compression parts
Slide plate be described upper slide plate, the vane slot of described two-stage compression parts is described upper vane slot；And
Described one stage of compression parts include that lower cylinder, supplementary bearing and cover plate, described cover plate are located at the bottom surface of described supplementary bearing with in institute
State and between cover plate and described supplementary bearing, limit described jet chamber, in described lower cylinder, be formed with lower vane slot, described lower vane slot
Inside it is provided with lower slide plate.
Double-stage compressor the most according to claim 9, it is characterised in that the afterbody of described lower slide plate is provided with sliding blade spring,
The afterbody of described lower vane slot is formed back pressure cavity by sealing duct occlusion with the afterbody at described lower vane slot,
Described back pressure cavity connects with described jet chamber；Or
Described jet chamber has puff prot, and described jet chamber is by described puff prot and described jet chamber orifice, described back pressure
Chamber is connected with described puff prot.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410103332.2A CN103883525B (en) | 2014-03-19 | 2014-03-19 | Double-stage compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410103332.2A CN103883525B (en) | 2014-03-19 | 2014-03-19 | Double-stage compressor |
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| CN103883525A CN103883525A (en) | 2014-06-25 |
| CN103883525B true CN103883525B (en) | 2016-11-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103867441B (en) * | 2014-03-19 | 2017-01-11 | 安徽美芝精密制造有限公司 | Double-stage compressor |
| CN105332920B (en) * | 2014-07-07 | 2018-02-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Baffle assembly and three cylinder double-stage compressors for three cylinder double-stage compressors |
| CN104930743B (en) * | 2015-05-13 | 2017-07-18 | 广东美芝制冷设备有限公司 | The cooling and warming circulatory system |
| CN116292298B (en) * | 2023-05-11 | 2023-08-15 | 福建省泉州市力达机械有限公司 | Low-noise energy-saving oil-free screw blower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4343627B2 (en) * | 2003-03-18 | 2009-10-14 | 東芝キヤリア株式会社 | Rotary hermetic compressor and refrigeration cycle apparatus |
| KR20050116676A (en) * | 2004-06-08 | 2005-12-13 | 삼성전자주식회사 | Apparatus for variable capacity of rotary compressor |
| CN201092959Y (en) * | 2007-09-28 | 2008-07-30 | 珠海格力电器股份有限公司 | Rotation-type compressor using silencing hole to jet and add enthalpy |
| CN201723445U (en) * | 2010-05-19 | 2011-01-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor capable of single-stage and double-stage switching |
| CN103075344B (en) * | 2011-10-25 | 2015-07-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Variable-capacity two-stage enthalpy-increase compressor and air-conditioning system |
| CN202483880U (en) * | 2012-01-17 | 2012-10-10 | 广东美芝制冷设备有限公司 | Two-stage rotary compressor |
| CN202851355U (en) * | 2012-08-21 | 2013-04-03 | 珠海凌达压缩机有限公司 | Single-stage and double-stage interchangeable double-cylinder compressor |
| CN203756526U (en) * | 2014-03-19 | 2014-08-06 | 安徽美芝精密制造有限公司 | Double-stage compressor |
| CN203756525U (en) * | 2014-03-19 | 2014-08-06 | 安徽美芝精密制造有限公司 | Double-stage compressor |
| CN103867441B (en) * | 2014-03-19 | 2017-01-11 | 安徽美芝精密制造有限公司 | Double-stage compressor |
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