CN103867441B - Double-stage compressor - Google Patents
Double-stage compressor Download PDFInfo
- Publication number
- CN103867441B CN103867441B CN201410106258.XA CN201410106258A CN103867441B CN 103867441 B CN103867441 B CN 103867441B CN 201410106258 A CN201410106258 A CN 201410106258A CN 103867441 B CN103867441 B CN 103867441B
- Authority
- CN
- China
- Prior art keywords
- stage
- jet chamber
- slide plate
- chamber
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a double-stage compressor which comprise a shell, a compressing mechanism and a volume-variable control mechanism, wherein an air suction channel and an air injection cavity are formed in the compressing mechanism, the compressing mechanism comprises a first-stage compressing part and a second-stage compressing part; the air injection cavity is used for receiving exhausted air from the first-stage compressing part; the air suction channel is communicated with the air injection cavity and the second-stage compressing part; the tail of a sliding sheet of the second-stage compressing part is suitable for communicating with the interior of the shell; the volume-variable control mechanism is provided with an air injection cavity connector, a high-pressure pipeline connector and a middle-pressure pipeline connector and is arranged in a manner that the air injection cavity connector can be communicated with the high-pressure connector or middle-pressure pipeline connector; when the high-pressure pipeline connector is communicated with the air injection cavity connector, the first-stage compressing part operates and works; when the middle-pressure pipeline connector is communicated with the air injection cavity connector, both the first-stage compressing part and the second-stage compressing part operate and work. The double-stage compressor has two modes, namely single-stage compressing and double-stage compressing which can be conveniently switched by virtue of the volume-variable 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,
Described slide plate action is controlled with the pressure differential at least through the two ends of described slide plate；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, described one stage of compression parts and described two grades when medium pressure pipe interface and described jet chamber orifice
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 double-stage compressor also includes: slide plate positioning element, described slide plate location division
When part is arranged in jet chamber interface described in the pressure duct orifice of described variable capacity control mechanism, to described secondary compressing portion
In the slide plate of part is positioned such that the vane slot that described slide plate is accommodated in 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, is formed with installation cavity, the slide plate of described two-stage compression parts is provided with locating slot in described central dividing plate；And it is described
Slide plate positioning element includes: location division, in described location division can be located at described installation cavity up or down and by described installation cavity
Being isolated into upper chamber and lower chamber, described location division is suitable to carry out location fit with described locating slot or separate, described
When carrying out location fit with described locating slot, described slide plate is positioned by described location division and described slide plate is accommodated in corresponding in location division
In vane slot, after described location division separates with described locating slot, described slide plate can move in corresponding vane slot, Qi Zhongsuo
Stating upper chamber and be adapted to communicate with described enclosure interior, described lower chamber is adapted to communicate with described jet chamber；Elastomeric element, described
Elastomeric element is arranged in described lower chamber and flexibly compresses described location division.
According to some embodiments of the present invention, described location division includes: body and the projection portion being located at described body top,
Described projection portion is adaptive with described locating slot, and described body has the cavity opened wide downwards, a part for described elastomeric element
Be located in described cavity and another part in described cavity to extend.
According to some embodiments of the present invention, described lower chamber is connected with described air intake passage so that described lower chamber connects
Logical described jet chamber.
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 vane slot is by sealing duct occlusion with the tail at described lower vane slot
Portion forms back pressure cavity, and described back pressure cavity connects with described jet chamber；Or described jet chamber has puff prot, described jet chamber
By described puff prot and described jet chamber orifice, described back pressure cavity is connected with described puff prot.
According to some embodiments of the present invention, described lower chamber is connected with described back pressure cavity so that described lower chamber connects
Described jet chamber.
According to some embodiments of the present invention, described upper chamber is connected with described enclosure interior by described upper vane slot.
According to some embodiments of the present invention, described upper vane slot and described lower vane slot stagger in the vertical direction.Thus,
Convenient formation installation cavity in central dividing plate.
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.
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 and Fig. 4 is the schematic diagram of the compression mechanism of one of them embodiment；
Fig. 5 is the partial enlarged drawing in Fig. 4；
Fig. 6 is the schematic diagram of the compression mechanism of another embodiment；
Fig. 7 is the schematic diagram at exhaust passage；
Fig. 8 is the connected state schematic diagram of air intake passage, lower chamber, jet chamber and back pressure cavity.
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, lower slide plate 64, back pressure cavity 65, sliding blade spring 66, seal pipe 67, lower vane slot
69；
Locating slot 71, location division 72, body 721, projection portion 722, elastomeric element 73, upper chamber 741, bottom
Chamber 742, air intake passage 75.
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. 3, Fig. 4 and Fig. 6, the specific configuration of compression mechanism will be described in detail below.Wherein one-level
Compression member can include the parts such as lower cylinder 25, supplementary bearing 26 and cover plate 27, and two-stage compression parts can include upper cylinder
23, the parts such as base bearing 22.Wherein upper cylinder 23 is located at the end face of central dividing plate 24, and base bearing 22 is located at upper cylinder 23
End face, deafener 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,
Supplementary bearing 26 is located at the bottom surface of lower cylinder 25, and cover plate 27 can be located at the bottom surface of supplementary bearing 26, thus at cover plate 27 with secondary
Jet chamber 51 is limited between bearing 26.
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.Air intake passage 75(combines shown in Fig. 8) connect jet chamber 51 and secondary compressing portion
The air entry (that is, the air entry of upper cylinder 23) of part, i.e. one-level aerofluxus in jet chamber 51 can be along air intake passage 75
Second-compressed is carried out in being inhaled into two-stage compression parts.Air intake passage 75 can be through supplementary bearing 26, lower cylinder 25 and
The passage of central dividing plate 24, but it is not limited to this.
As shown in Figure 4 and Figure 6, 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 6, 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, controls the action of upper slide plate 61, in other words, upper slide plate with the pressure differential at least through the two ends of upper slide plate 61
The afterbody of groove 62 be connection shell, within 1, and upper slide plate 61 be at least can by its pressure at two ends difference come action (when
Sliding blade spring 66 so can also be set and jointly drive slide plate 61 action with this pressure differential).Such as go up vane slot 62 can have
There is connection opening within housing 1.Thus, the high back pressure set up in compressor 100 runs back casing 1 can act on
The afterbody of slide plate 61, thus upper slide plate 61 can be in the pressure differential (i.e. head and the pressure differential of afterbody) at upper slide plate 61 two ends
Effect under 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 certain embodiments, as it has been described above, upper slide plate 61 can carry out control action by pressure reduction, i.e. pass through
Pressure reduction realize slide plate 61 and upper piston 28 outer peripheral face against or separate, the afterbody now going up slide plate 61 can be not provided with
Traditional sliding blade spring 66.And in further embodiments, the afterbody of upper slide plate 61 can also arrange sliding blade spring 66,
In these embodiments, needing to arrange slide plate positioning element, this will describe in detail in the following embodiments.
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 75 is also high pressure coolant, thus acts on slide plate 61 two ends
Pressure reduction essentially identical, 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 75, 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
Under the effect of pressure differential, upper slide plate 61 will be resisted against on upper piston 28, so that upper piston 28 can be to entering upper cylinder
Coolant in 23 is 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 it is shown in fig. 7, be 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 in figure 7, 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 in figure 7, 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, as it is shown in fig. 7, the sectional dimension of a part for exhaust passage 52 diminishes to be formed
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, guides spheroid and arranges the top with the section of narrowing 521, and the diameter guiding spheroid is more than the diameter of the section of narrowing 521 and is less than
The diameter of exhaust passage 52 remainder.
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.
According to some currently preferred embodiments of the present invention, as shown in Figure 6, the afterbody of lower vane slot 69 can be closed by sealing pipe 67,
Vane slot 69 is i.e. descended not directly to connect with housing 1 inside, thus in the afterbody formation back pressure cavity 65 of lower vane slot 69, should
Back pressure cavity 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.
Owing to double-stage compressor 100 is when single-stage is run, the slide plate (i.e. going up slide plate 61) of two-stage compression parts may be because of two
The level cylinder interior air pressure fluctuation of compression member and produce motion, increase the abrasion of this slide plate.Therefore, in certain embodiments,
The particularly afterbody at upper slide plate 61 is provided with in the embodiment of sliding blade spring 66, and double-stage compressor 100 can also include sliding
Sheet positioning element, slide plate positioning element is arranged in the pressure duct interface 42 of variable capacity control mechanism 4 and connects jet chamber interface
When 41, the slide plate of two-stage compression parts is positioned such that the vane slot that this slide plate is accommodated in two-stage compression parts in.
In other words, with reference to shown in Fig. 4-Fig. 6, when double-stage compressor 100 is in single-stage operation, slide plate positioning element is by right
Upper slide plate 61 carries out positioning (state as shown in Figure 6), so that upper slide plate 61 is accommodated in vane slot 62, and upper cunning
Sheet 61 separates with upper piston 28, it is to avoid upper slide plate 61 moves in upper vane slot 62 due to air pressure fluctuation, is substantially reduced
Abrasion between upper slide plate 61 and upper vane slot 62 and upper cylinder 23, thus substantially increase the service life of slide plate 61.
With reference to shown in Fig. 4-Fig. 6, being formed with installation cavity in central dividing plate 24, the slide plate of two-stage compression parts i.e. goes up slide plate 61
On be provided with locating slot 71(as shown in Figure 5).Further, slide plate positioning element includes location division 72 and for flexibly supporting
By the elastomeric element 73 of location division 72, location division 72 can include body 721 and be located at the projection at body 721 top
Portion 722, projection portion 722 is adaptive with locating slot 71, to realize location in i.e. projection portion 722 is inserted into locating slot 71,
Or projection portion 722 can also separate with locating slot 71, thus the upper slide plate 61 of release.Body 721 has the most unlimited
Cavity, elastomeric element 73 can be spring, and a part for elastomeric element 73 can be located in cavity and another part can be from
In cavity under extend and can be resisted against on the wall relative with cavity.
As Figure 4-Figure 6, location division 72 can be arranged in installation cavity up or down, and location division 72 will be installed
Chamber is isolated into upper chamber 741 and lower chamber 742(as shown in Figure 5), location division 72 be suitable to locating slot 71 carry out fixed
Position coordinates or separates, such as, coordinated with locating slot 71 by projection portion 722.
As shown in Figure 6, wherein carry out with locating slot 71 in location division 72 two-stage compression parts during location fit slide plate (
Upper slide plate 61) positioned by location division 72 and this slide plate to be accommodated in the vane slot (i.e. go up vane slot 62) of correspondence interior.On thus
Slide plate 61 can separate with upper piston 28, and upper piston 28 can be at idling conditions, thus two-stage compression parts do not work.
As shown in Figure 4 and Figure 5, and after location division 72 separates with locating slot 71, the slide plate of two-stage compression parts can be corresponding
Vane slot in move, the most now go up slide plate 61 and do not limited by location division 72 and act on, now two-stage compression parts can be located
In duty, the coolant entered in upper cylinder 23 can be compressed by upper piston 28.
Wherein upper chamber 741 is adapted to communicate with housing 1 inside, and lower chamber 742 is adapted to communicate with jet chamber 51.In other words,
Upper chamber 741 is adapted to communicate with the high pressure gas pressure within housing 1, and lower chamber 742 is adapted to communicate with in jet chamber 51
High pressure or middle pressure coolant.
Thus, when pressure duct interface 42 connects jet chamber interface 41, i.e. during one stage of compression parts operation work, due to
Lower chamber 742 connects the high pressure coolant in jet chamber 51, therefore the coolant pressure in upper chamber 741 and lower chamber 742
Power is of substantially equal, and now location division 72 will move upward under the effect of elastomeric element 73 elastic force, so that projection portion
722 can be engaged in locating slot 71, so that upper slide plate 61 is positioned, and the one-movement-freedom-degree of slide plate 61 in restriction.
And when middle pressure pipe interface 43 connects with jet chamber interface 41, one stage of compression parts and described two-stage compression parts are complete
Portion runs work, now connects the middle pressure coolant in jet chamber 51, upper chamber 741 and lower chamber due to lower chamber 742
There is pressure differential in room 742, thus location division 72 will overcome under the effect of this pressure differential elastomeric element 73 elastic force and to
Lower motion so that projection portion 722 departs from locating slot 71, thus upper slide plate 61 can move in upper vane slot 62.
It should be appreciated that above-mentioned " it is internal that upper chamber 741 is adapted to communicate with housing 1 " should broadly understood, such as, go up
It is internal that portion's chamber 741 can indirectly connect housing 1 by intermediary.Similarly, " lower chamber 742 is suitable to
Connection jet chamber 51 " should also be as broadly understood, such as lower chamber 742 can be by air intake passage 75 or other lead to
The intermediarys such as road and with jet chamber 51 indirect communication.
Specifically, wherein in an embodiment, lower chamber 742 can be connected with air intake passage 75 so that lower chamber
Room 742 connects jet chamber 51.
In another embodiment, lower chamber 742 is connected with back pressure cavity 65 so that lower chamber 742 connects jet chamber 51,
I.e. lower chamber 742 is connected with jet chamber 51 indirectly by back pressure cavity 65.In these some embodiments, upper vane slot
62 and lower vane slot 69 can stagger in the vertical direction, be so easy to lower chamber 742 and connect back pressure cavity 65, the most just
On installation cavity dividing plate formed between 24.Or, lower chamber 742 can also is that by one section of passage and back pressure cavity
65 connections.
Shown in Fig. 8, having solid line and two kinds of connected modes of dotted line in Fig. 8 between each chamber, wherein solid line represents that one can
Select embodiment, dotted line to represent another kind of alternative embodiment, the most for purposes of brevity two kinds of embodiments are combined in one
In schematic diagram.
Specifically, in fig. 8, bold portion and dotted portion can represent and can use any center-aisle between two chambeies
Form connects, naturally it is also possible to be directly connection.As a example by the solid line between lower chamber 742 and air intake passage 75,
This solid line represent between lower chamber 742 and air intake passage 75 can be arranged in the in-house passage of compression by any and
Connect.For another example as a example by the dotted line between lower chamber 742 and back pressure cavity 65, this dotted line represent lower chamber 742 with
Between back pressure cavity 65 can by any can be arranged in compression in-house passage and connect.It should be appreciated that figure
8 are only illustrative, it is impossible to be not understood as a kind of restriction to the present invention.
Wherein in an embodiment, upper chamber 741 can internal with housing 1 by upper vane slot 62 connect, but not
It is limited to this.
In the example of Fig. 4 and Fig. 5, central dividing plate 24 can be double-layer clapboard structure, and being used on central dividing plate 24 is held
The installation cavity of location division 72 received can be formed between double-layer clapboard structure, and it can be uiform section structure, naturally it is also possible to be
Ladder cavernous structure.
For the ordinary skill in the art, on the basis having read description disclosure, it is clear that can
With according to different compressors 100, and this installation cavity of specific design position on central dividing plate 24, the form etc. of installation cavity,
This is for the ordinary skill in the art, it should all will be appreciated that and is easily achieved.
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 (14)
1. a double-stage compressor, it is characterised in that including:
Housing；
Compression mechanism, described compression mechanism is located in described housing, is formed with air intake passage and jet chamber in described compression mechanism,
Described compression mechanism includes:
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
Connect described enclosure interior, control described slide plate action with the pressure differential at least through the two ends of described slide plate；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 also include: slide plate positioning element, described cunning
When sheet positioning element is arranged in jet chamber interface described in the pressure duct orifice of described variable capacity control mechanism, to described two grades
In the slide plate of compression member is positioned such that the vane slot that described slide plate is accommodated in described two-stage compression parts.
Double-stage compressor the most according to claim 2, it is characterised in that described one stage of compression parts and described two grades of pressures
It is folded with central dividing plate between contracting parts, is formed with installation cavity in described central dividing plate, the slide plate of described two-stage compression parts sets
It is equipped with locating slot；And
Described slide plate positioning element includes:
Location division, described location division can be located at up or down in described installation cavity and described installation cavity is isolated into upper chamber and
Lower chamber, described location division is suitable to carry out location fit with described locating slot or separate, at described location division and described locating slot
When carrying out location fit, described slide plate is positioned by described location division and described slide plate is accommodated in the vane slot of correspondence, in described location
After portion separates with described locating slot, described slide plate can move in corresponding vane slot, and wherein said upper chamber is adapted to communicate with described
Enclosure interior, described lower chamber is adapted to communicate with described jet chamber；
Elastomeric element, described elastomeric element is arranged in described lower chamber and flexibly compresses described location division.
Double-stage compressor the most according to claim 3, it is characterised in that described location division includes: body and being located at
The projection portion at described body top, described projection portion is adaptive with described locating slot, and described body has the cavity opened wide downwards,
A part for described elastomeric element be located in described cavity and another part in described cavity to extend.
Double-stage compressor the most according to claim 3, it is characterised in that described lower chamber and described air intake passage phase
Even so that described lower chamber connects described jet chamber.
Double-stage compressor the most according to claim 3, 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 6, it is characterised in that the afterbody of described lower vane slot is by sealing pipe envelope
Close and form back pressure cavity 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.
Double-stage compressor the most according to claim 7, it is characterised in that described lower chamber is connected with described back pressure cavity
So that described lower chamber connects described jet chamber.
Double-stage compressor the most according to claim 6, it is characterised in that described upper chamber passes through described upper vane slot
And connect with described enclosure interior.
Double-stage compressor the most according to claim 6, it is characterised in that described upper vane slot and described lower vane slot exist
Stagger on above-below direction.
11. double-stage compressors 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.
12. double-stage compressors stated according to claim 11, 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.
13. double-stage compressors 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.
14. double-stage compressors according to claim 13, it is characterised in that the cross section of a part for described exhaust passage
Size diminishes 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410106258.XA CN103867441B (en) | 2014-03-19 | 2014-03-19 | Double-stage compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410106258.XA CN103867441B (en) | 2014-03-19 | 2014-03-19 | Double-stage compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103867441A CN103867441A (en) | 2014-06-18 |
| CN103867441B true CN103867441B (en) | 2017-01-11 |
Family
ID=50906339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410106258.XA Active CN103867441B (en) | 2014-03-19 | 2014-03-19 | Double-stage compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103867441B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883525B (en) * | 2014-03-19 | 2016-11-02 | 安徽美芝精密制造有限公司 | Double-stage compressor |
| CN105201836B (en) * | 2014-06-27 | 2018-01-02 | 珠海格力电器股份有限公司 | Air-conditioning system, air-conditioning system gas supplementary structure and double-stage compressor |
| CN106567831B (en) * | 2015-10-15 | 2019-01-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Twin-stage positive displacement compressor and air-conditioning system with it |
| CN107218740B (en) * | 2016-03-21 | 2023-12-12 | 珠海格力电器股份有限公司 | Refrigerant circulation system and air conditioner with same |
| CN107178503B (en) * | 2017-07-28 | 2021-06-08 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigerating device |
| CN109139466A (en) * | 2018-09-06 | 2019-01-04 | 珠海凌达压缩机有限公司 | Cylinder, pump assembly, compressor and air-conditioner outdoor unit |
| CN110131166A (en) * | 2019-06-20 | 2019-08-16 | 珠海凌达压缩机有限公司 | A kind of novel positive displacement compressor |
| CN111502993B (en) * | 2020-04-24 | 2021-04-16 | 珠海格力电器股份有限公司 | Compressor, heat exchange system and air conditioner |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006242140A (en) * | 2005-03-04 | 2006-09-14 | Toshiba Kyaria Kk | Hermetic compressor and refrigerating cycle device |
| JP2009203861A (en) * | 2008-02-27 | 2009-09-10 | Toshiba Carrier Corp | Hermetic compressor and refrigerating cycle device |
| JP2010085001A (en) * | 2008-09-30 | 2010-04-15 | Daikin Ind Ltd | Refrigerating device |
| CN101793252A (en) * | 2009-01-14 | 2010-08-04 | 东芝开利株式会社 | Multi-cylinder rotary compressor and refrigeration cycle device |
| CN102644596A (en) * | 2011-02-16 | 2012-08-22 | 广东美芝制冷设备有限公司 | Capacity control type rotary compressor |
| CN103883525A (en) * | 2014-03-19 | 2014-06-25 | 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 |
| CN203756526U (en) * | 2014-03-19 | 2014-08-06 | 安徽美芝精密制造有限公司 | Double-stage compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-03-19 CN CN201410106258.XA patent/CN103867441B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006242140A (en) * | 2005-03-04 | 2006-09-14 | Toshiba Kyaria Kk | Hermetic compressor and refrigerating cycle device |
| JP2009203861A (en) * | 2008-02-27 | 2009-09-10 | Toshiba Carrier Corp | Hermetic compressor and refrigerating cycle device |
| JP2010085001A (en) * | 2008-09-30 | 2010-04-15 | Daikin Ind Ltd | Refrigerating device |
| CN101793252A (en) * | 2009-01-14 | 2010-08-04 | 东芝开利株式会社 | Multi-cylinder rotary compressor and refrigeration cycle device |
| CN102644596A (en) * | 2011-02-16 | 2012-08-22 | 广东美芝制冷设备有限公司 | Capacity control type rotary compressor |
| CN103883525A (en) * | 2014-03-19 | 2014-06-25 | 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 |
| CN203756526U (en) * | 2014-03-19 | 2014-08-06 | 安徽美芝精密制造有限公司 | Double-stage compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103867441A (en) | 2014-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103867441B (en) | Double-stage compressor | |
| CN103534486B (en) | Swirl type cold compressor | |
| CN202500772U (en) | Frequency variable and capacity variable compressor and air-conditioning system using same | |
| CN103415704A (en) | Scroll refrigeration compressor | |
| CN103415703A (en) | Scroll refrigeration compressor | |
| CN203756525U (en) | Double-stage compressor | |
| CN103883525B (en) | Double-stage compressor | |
| CN103727034B (en) | Compressor | |
| CN103557159B (en) | Rotary compressor | |
| CN101397994B (en) | Scroll compressor with high side to low side oil bleed valve | |
| CN202117924U (en) | Refrigerant jetting type rotary compressor | |
| CN210441470U (en) | Refrigeration system | |
| CN203756526U (en) | Double-stage compressor | |
| CN205349733U (en) | Varactor formula compressor and refrigerating plant who has it | |
| CN102691660B (en) | Two-stage double-cylinder compressor with high refrigeration performance | |
| CN205370984U (en) | Variable displacement compressor and refrigerating plant who has it | |
| CN109058107B (en) | Sealed rotary compressor and control method thereof | |
| CN108035879B (en) | Enthalpy increasing structure of compressor and scroll compressor | |
| CN1904369A (en) | Multisection rotating type compressor and airconditioner therefor | |
| CN1904370B (en) | Multisection rotating type compressor | |
| CN211900969U (en) | No-load starting type refrigeration screw compressor | |
| CN112444012B (en) | Liquid storage device, compressor assembly and refrigerating system | |
| CN205370985U (en) | Variable displacement compressor and refrigerating plant who has it | |
| CN203114623U (en) | Horizontal-type vortex compressor | |
| CN102650293B (en) | Compressor and oil return structure of compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |