CN104389790B - Low back pressure compressor - Google Patents
Low back pressure compressor Download PDFInfo
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- CN104389790B CN104389790B CN201410623773.5A CN201410623773A CN104389790B CN 104389790 B CN104389790 B CN 104389790B CN 201410623773 A CN201410623773 A CN 201410623773A CN 104389790 B CN104389790 B CN 104389790B
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Abstract
The invention discloses a kind of low back pressure compressor, including：Housing and compression mechanism, compression mechanism have two discharge chambers, and two discharge chambers are respectively first row air cavity and the second row air cavity connected with first row air cavity, and compression mechanism includes：Cylinder assembly and two bearings, cylinder assembly include at least one cylinder, and slide plate chamber is provided with each cylinder.Two bearings are respectively base bearing and supplementary bearing, and exhaust partition is provided between at least one bearing and cylinder assembly, and at least one of first row air cavity and second row air cavity are limited by exhaust partition with corresponding bearing.Low back pressure compressor according to embodiments of the present invention, discharge chamber and exhaust partition structure can be simplified, discharge chamber sealing surface is simple flat surface and carries out mechanical seal, low cost and reliability is high, solve the problems, such as that low back pressure compressor design of part is excessively complicated, technology difficulty is big, production cost is high, improves the reliability of compressor.
Description
Technical field
The present invention relates to compressor field, more particularly, to a kind of low back pressure compressor.
Background technology
The rotary compressor of casing of low back pressure, the high-pressure refrigerant of compression chamber discharge needs the row by being located on bearing
Stomata reaches discharge chamber, then discharges compressor by blast pipe, to ensure the sealing effectiveness of discharge chamber, generally has two kinds to do
Method：One is the surface accuracy in lift-off seal face, and mechanical seal is carried out by the surface of degree of precision, and two is to add close in contact surface
Packing improve sealing effectiveness, but due to base bearing side seal face structure limitation and the more difficult lifting of precision, therefore scheme 1 reality
Apply more difficult.Scheme 2 is due to increased new material, sealing gasket and the difficulty that the compatibility of oil product and refrigerant is in exploitation
Point, simultaneously because forming discharge chamber away from cylinder side and cover plate using bearing, and will take into account oil separation and decrease of noise functions, part
Complex degree of structure increase, difficulty of processing and relatively costly, reliability can also be affected.
Discharge chamber bottom in correlation technique in compression mechanism bottom sets oil sump, and oil sump is provided with fuel feeding and leads to slide plate chamber
Road, moves back and forth the negative pressure for producing and is lubricated refrigerator oil suction slide plate chamber by slide plate, but this scheme can reduce slide plate
Backside pressure, and in slide plate over feeding, slide plate chamber volume reducing, accumulating in slide plate bottom of chamber portion refrigerator oil can not be timely
Oil sump is returned, causes slide plate cavity pressure to raise.When slide plate cavity pressure reduces, slide plate can be caused to be separated with piston；And slide plate
When cavity pressure is raised, the contact force of slide plate tip and piston can be increased again, above mentioned problem can influence volumetric efficiency and enter power, and then
Influence the efficiency and reliability of compressor.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention is carried
Go out a kind of low back pressure compressor, discharge chamber sealing surface is simple flat surface and carries out mechanical seal, and compressor arrangement is simple.
Low back pressure compressor according to embodiments of the present invention, including：Housing and compression mechanism, the housing are provided with exhaust
Mouth and gas returning port, the compression mechanism are located in the housing, and the compression mechanism has two discharge chambers, described two exhausts
Chamber is respectively first row air cavity and the second row air cavity connected with the first row air cavity, and the first row air cavity is located at described the
The top of two discharge chambers, the second row air cavity is connected with the exhaust outlet, and the compression mechanism includes：Cylinder assembly, it is described
Cylinder assembly includes at least one cylinder, and slide plate chamber is provided with each described cylinder；Two bearings, described two bearings are respectively
Base bearing and supplementary bearing, the base bearing are located on the upper surface of the cylinder assembly, and the supplementary bearing is located at the air cylinder group
On the lower surface of part, be provided with exhaust partition between bearing described at least one and the cylinder assembly, the first row air cavity and
At least one of described second row air cavity is limited by the exhaust partition with the corresponding bearing.
Low back pressure compressor according to embodiments of the present invention, by being provided with exhaust partition, is carried out close in satisfaction to discharge chamber
While envelope function, discharge chamber and exhaust partition structure can be simplified, discharge chamber sealing surface is simple flat surface and carries out
Mechanical seal, low cost and reliability is high solves low back pressure compressor design of part excessively complicated, technology difficulty big, raw
Produce the problem of high cost.
In some specific embodiments of the invention, be provided between the base bearing and the cylinder assembly it is described exhaust every
Plate, limits the first row air cavity between the exhaust partition and the base bearing.
In other specific embodiments of the invention, the exhaust is provided between the supplementary bearing and the cylinder assembly
Dividing plate, limits the second row air cavity between the exhaust partition and the supplementary bearing.
Some specific examples of the invention, the bearing for being provided with the exhaust partition is provided with the first groove, phase
The exhaust partition answered is provided with the second groove, and first groove and second groove fit limit corresponding described
Discharge chamber.
In some embodiments of the invention, it is provided with gasket seal between the exhaust partition and the corresponding bearing.
Some embodiments of the invention, are provided with the first oil sump in the first row air cavity, first oil sump passes through
First oil supply gallery is connected with the slide plate chamber.
Further, be provided with the second oil sump in the second row air cavity, second oil sump by the second oil supply gallery with
The slide plate chamber connection.
Specifically, the cross-sectional area S1 of first oil supply gallery meets following relational expression：0.3mm2<S1<12.5mm2。
Specifically, the cross-sectional area S2 of second oil supply gallery meets following relational expression：0.3mm2<S2<12.5mm2。
Specifically, the thickness of the exhaust partition is more than 5mm.
Brief description of the drawings
Fig. 1 is the schematic diagram of the low back pressure compressor according to one embodiment of the invention；
Fig. 2 is the schematic perspective view of the exhaust partition according to one embodiment of the invention, and wherein exhaust partition is provided with
Two grooves；
Fig. 3 is the schematic diagram of another angle of the exhaust partition shown in Fig. 2；
Fig. 4 is the profile of the exhaust partition shown in Fig. 2；
Fig. 5 is the schematic diagram of the base bearing according to the embodiment of the present invention；
Fig. 6 is the schematic diagram of another angle of the base bearing shown in Fig. 5；
Fig. 7 is the profile of the base bearing shown in Fig. 5；
Fig. 8 is the schematic diagram of the exhaust partition according to another embodiment of the present invention；
Fig. 9 is the schematic diagram of the low back pressure compressor according to another embodiment of the present invention；
Figure 10 is the schematic diagram of the low back pressure compressor according to further embodiment of the present invention.
Reference：
Low back pressure compressor 100, housing 1, exhaust outlet 10, gas returning port 11, upper shell 12, main casing 13, lower house 14,
First row air cavity 20, first row stomata 200, second row air cavity 22, second row stomata 220, intercommunicating pore 21, cylinder
23rd, slide plate chamber 230, compression chamber 231, bearing 24, base bearing 24a, the first groove 240, supplementary bearing 24b, body 241, cover plate
242nd, exhaust partition 25, first exhaust dividing plate 25a, second exhaust dividing plate 25b, the second groove 250, lock chamber 251, oil eliminator
26th, bent axle 27, piston 28,
First oil sump 3, the first oil supply gallery 30,
Second oil sump 4, the second oil supply gallery 40,
Motor section 5, stator 50, rotor 51.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to
The embodiment of Description of Drawings is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect or can communicate each other；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be with
Be two element internals connection or two interaction relationships of element, unless otherwise clearly restriction.For this area
For those of ordinary skill, above-mentioned term concrete meaning in the present invention can be as the case may be understood.
Low back pressure compressor 100 according to embodiments of the present invention, the low back pressure pressure are described in detail below with reference to Fig. 1-Figure 10
Contracting machine 100 can be applied in the refrigeration plants such as air-conditioner, refrigerator.
As shown in Fig. 1, Fig. 9 and Figure 10, low back pressure compressor 100 according to embodiments of the present invention, including：Housing 1 and pressure
Contracting mechanism, housing 1 is provided with exhaust outlet 10 and gas returning port 11.As shown in figure 1, in specific example of the invention, housing 1 includes
Main casing 13, upper shell 12 and lower house 14, upper shell 12 are located at the top of main casing 13, and lower house 14 is located at main casing 13
Lower section, can be being by the way of being welded to connect between upper shell 12 and main casing 13, between lower house 14 and main casing 13
It is fixed.The receiving space for accommodating compression mechanism, return-air are limited between upper shell 12, main casing 13 and lower house 14
Mouth 11 is located on upper shell 12, and exhaust outlet 10 is located on main casing 13.Of course, it should be understood that gas returning port 11 can also be located at
On main casing 13.
Compression mechanism is located in housing 1, and compression mechanism has two discharge chambers, and two discharge chambers are respectively first row air cavity
20 and the second row air cavity 22 that is connected with first row air cavity 20, specifically, first row air cavity 20 and second row air cavity 22 are by connecting
Through hole 21 is connected.
First row air cavity 20 is located at the top of second row air cavity 22, and second row air cavity 22 is connected with exhaust outlet 10.Compressor
Structure includes：Cylinder assembly and two bearings 24, wherein, cylinder assembly is located in housing 1, and cylinder assembly includes at least one cylinder
23, it is provided with slide plate chamber 230 in each cylinder 23.
Two bearings 24 are respectively base bearing 24a and supplementary bearing 24b, and base bearing 24a is located on the upper surface of cylinder assembly,
Supplementary bearing 24b is located on the lower surface of cylinder assembly, when low back pressure compressor 100 is single cylinder compressor, such as Fig. 1, Fig. 9 and Tu
Shown in 10, cylinder assembly includes a cylinder 23, and base bearing 24a is located on the upper surface of cylinder 23, and supplementary bearing 24b is located at cylinder
On 23 lower surface.When low back pressure compressor 100 is duplex cylinder compressor, cylinder assembly includes two cylinders and median septum, in
Dividing plate is located between two cylinders, and two cylinders are upper cylinder and lower cylinder, and base bearing 24a is located on the upper surface of upper cylinder,
Supplementary bearing 24b is located on the lower surface of lower cylinder.
Exhaust partition 25, first row air cavity 20 and second row air cavity 22 are provided between at least one bearing 24 and cylinder assembly
At least one of limited with corresponding bearing 24 by exhaust partition 25.Alternatively, the thickness of exhaust partition 25 is more than 5mm.
Specifically, three kinds of situations of the setting of exhaust partition 25 point：The first situation is as shown in figure 1, only base bearing
Exhaust partition 25 is provided between 24a and cylinder assembly, first row air cavity 20 is limited between exhaust partition 25 and base bearing 24a,
Second row air cavity 22 is limited in supplementary bearing 24b.Second situation is that exhaust is only provided between supplementary bearing 24b and cylinder assembly
Dividing plate 25, limits second row air cavity 22 between exhaust partition 25 and supplementary bearing 24b, first exhaust is limited in base bearing 24a
Chamber 20.The third situation is as shown in Figure 9 and Figure 10, an exhaust partition 25 to be provided between base bearing 24a and cylinder assembly, secondary
An exhaust partition 25 also is provided between bearing 24b and cylinder assembly, in that case, will can be located on base bearing 24a
Exhaust partition 25 be referred to as first exhaust dividing plate 25a, exhaust partition 25 on supplementary bearing 24b will be located at and is referred to as second exhaust dividing plate
25b, limits first row air cavity 20, second exhaust dividing plate 25b and supplementary bearing between first exhaust dividing plate 25a and base bearing 24a
Second row air cavity 22 is limited between 24b.
It is understood that cylinder assembly element, each cylinder 23 also including piston 28, air bleeding valve, bent axle 27, slide plate etc.
Inside it is provided with outside compression chamber 231, piston 28 and is enclosed within bent axle 27, be provided with one in each compression chamber 231 drives bias by bent axle 27
The piston 28 of rotation.Each cylinder 23 is provided with vane slot, and slide plate is slidably disposed in vane slot and the tip of slide plate stops all the time
It is against on piston 28, the tail end of slide plate is extend into slide plate chamber 230.Simultaneously it will also be appreciated that low back pressure compressor 100 is gone back
Including motor section 5, motor section 5 is located in housing 1, and motor includes stator 50 and rotor 51, be enclosed within bent axle 27 outside rotor 51 with
Bent axle 27 is driven to rotate, stator 50 is located on the inwall of housing 1 and is enclosed within rotor 51 outward.
Needs are illustrated, in the description of the invention, " on " can be being axially direction towards in bent axle 27
The direction of motor section 5, D score can be the direction away from motor section 5 on the axial direction of bent axle 27.Of the invention specific
In example, the refrigerant type that low back pressure compressor 100 of the invention is used can be carbonic acid class gas or hydrocarbon compound,
Refrigerant type can also be flammable halogenated hydrocarbon compound.
Specifically, first row air cavity 20 is connected by first row stomata 200 with compression chamber 231, and second row air cavity 22 passes through
Second row stomata 220 is connected with compression chamber 231, first row stomata 200 and second row stomata 220 opened by air bleeding valve respectively or
Close.Wherein when base bearing 24a is provided with exhaust partition 25, the air bleeding valve for opening or closing first row stomata 200 sets
On exhaust partition 25.When supplementary bearing 24b is provided with exhaust partition 25, the row for opening or closing second row stomata 220
Air valve is located on exhaust partition 25, in short, cylinder assembly includes two air bleeding valves, one of air bleeding valve is used to beat to open or close
First row stomata 200 is closed, another air bleeding valve is used to open or close second row stomata 220, in two air bleeding valves at least one
It is individual to be located on exhaust partition 25.When exhaust partition 25 is provided with air bleeding valve, exhaust partition 25 is provided with for accommodating air bleeding valve
Lock chamber 251.
When low back pressure compressor 100 works, when the pressure in compression chamber 231 is more than the pressure at expulsion of air bleeding valve, exhaust
Valve is opened, and is drained into first row air cavity 20 from first row stomata 200 from a part of gaseous refrigerant of the discharge of compression chamber 231,
It is drained into second row air cavity 22 from second row stomata 220 from another part gaseous refrigerant of the discharge of compression chamber 231, first row
Gaseous refrigerant in air cavity 20 is drained into second row air cavity 22, and the refrigerant in second row air cavity 22 passes through the row of exhaust outlet 10
Go out compressor.
Low back pressure compressor 100 according to embodiments of the present invention, by being provided with exhaust partition 25, is meeting to enter discharge chamber
While row sealing function, discharge chamber and the structure of exhaust partition 25 can be simplified, discharge chamber sealing surface is simple flat
Face carries out mechanical seal, low cost and reliability is high, solves the design of part of low back pressure compressor 100 excessively complicated, technique
The problem that difficulty is big, production cost is high, improves the reliability of compressor.
In some embodiments of the invention, as shown in Fig. 2-Fig. 7, the bearing 24 for being provided with exhaust partition 25 is provided with first
Groove 240, corresponding exhaust partition 25 is provided with the second groove 250, and the first groove 240 and the cooperation of the second groove 250 are limited
Corresponding discharge chamber.For example when base bearing 24a is provided with exhaust partition 25, then the first groove can be provided with base bearing 24a
240, the exhaust partition 25 being located on base bearing 24a is provided with the second groove 250.When supplementary bearing 24b is provided with exhaust partition 25
When, then the first groove 240 can also be provided with supplementary bearing 24b, it is recessed that the exhaust partition 25 being located on supplementary bearing 24b is provided with second
Groove 250.
Of course, it should be understood that discharge chamber can also be the end for being provided only on the bearing 24 contacted with exhaust partition 25
On face, that is to say, that as shown in figure 8, the lock chamber 251 for installing air bleeding valve is provided only with exhaust partition 25, corresponding row
Air cavity is limited by the groove and exhaust partition 25 being located on bearing.Such that it is able to there is more spaces to enter the shape of discharge chamber
Row optimization, and then reach the balance of preferably oil separating effect and production and processing cost.
In some embodiments of the invention, it is provided with gasket seal between exhaust partition 25 and corresponding bearing 24.So as to
Contact surface is also had preferable sealing effectiveness in the case of lower accuracy, and then reduce processing cost, may further ensure that
The reliability of low back pressure compressor 100.
As shown in Figure 10, the first oil sump 3, the first oil are provided with some embodiments of the invention, first row air cavity 20
Pond 3 is connected by the first oil supply gallery 30 with slide plate chamber 230.Specifically, the cross-sectional area S1 of the first oil supply gallery 30 meets such as
Lower relational expression：0.3mm2<S1<12.5mm2.Due to reciprocating motion of the slide plate in vane slot, the volume in slide plate chamber 230 can the cycle
Property change, the volume of slide plate chamber 230 increase when, the first oil supply gallery 30 suction lubricating oil, i.e. the first oil sump 3 in lubricating oil enter
Enter in slide plate chamber 230, the amplitude that pressure reduces in slide plate chamber 230 can be reduced, when the volume of slide plate chamber 230 reduces, top first
Unnecessary high-pressure refrigerant can be imported first row air cavity 20 by oil supply gallery 30 rapidly, so as to reduce the pressure in slide plate chamber 230
Power elevation amplitude, reduces the pressure oscillation in slide plate chamber 230, improves the reliability of low back pressure compressor 100.
Further, as shown in Figure 10, the second oil sump 4 is provided with second row air cavity 22, the second oil sump 4 passes through the second fuel feeding
Passage 40 is connected with slide plate chamber 230.Specifically, when the volume of slide plate chamber 230 increases, the first oil supply gallery 30 and the second fuel feeding are logical
The lubricating oil that road 40 is sucked in lubricating oil, i.e. the first oil sump 3 and the second oil sump 4 simultaneously is entered into slide plate chamber 230, can reduce cunning
The amplitude that pressure reduces in piece chamber 230, when the volume of slide plate chamber 230 reduces, due to Action of Gravity Field, the oil accumulation in slide plate chamber 230
In bottom, the second oil sump 4 is back to by the second oil supply gallery 40, and the first oil supply gallery of top 30 can rapidly by unnecessary height
Compression refrigerant imports first row air cavity 20, so as to reduce the pressure rise amplitude in slide plate chamber 230, can be by adjustment first
The sectional dimension of the oil supply gallery 40 of oil supply gallery 30 and second, certain lubricating oil can be contained in slide plate chamber 230 and ensures to slide
In the case of the lubrication of piece side and sealing, the efficiency and reliability of compressor are not influenceed.
In specific example of the invention, the cross-sectional area S2 of the second oil supply gallery 40 meets following relational expression：0.3mm2<
S2<12.5mm2。
As shown in Fig. 1, Fig. 9 and Figure 10, in some embodiments of the invention, low back pressure compressor 100 also includes oil
From device 26, oil eliminator 26 is located in second row air cavity 22, and oil eliminator 26 can will go into the refrigeration in second row air cavity 22
Agent carries out Oil-gas Separation, and the gaseous refrigerant after Oil-gas Separation is discharged by exhaust outlet 10, the lubricating oil deposition after Oil-gas Separation
In second row air cavity 22.
Below with reference to Fig. 1 descriptions according to first low back pressure compressor 100 of specific embodiment of the invention.
As shown in figure 1, in this embodiment, low back pressure compressor 100 includes：Housing 1 and compression mechanism, compression mechanism bag
Base bearing 24a, supplementary bearing 24b, cylinder 23 and exhaust partition 25 are included, exhaust partition 25 is located on the upper surface of cylinder 23, main shaft
Hold 24a to be located on the upper surface of exhaust partition 25, first row air cavity 20 is limited between base bearing 24a and exhaust partition 25, its
In be only provided with the end face towards base bearing 24a of exhaust partition 25 groove with base bearing 24a coordinate limit first row
Air cavity 20.
Exhaust partition 25 is provided with first row stomata 200, and first row air cavity 20 is by first row stomata 200 and cylinder 23
Compression chamber 231 connect.
Supplementary bearing 24b includes body 241 and cover plate 242, and cover plate 242 is located on the lower surface of body 241, the He of cover plate 242
Second row air cavity 22 is limited between body 241, body 241 is provided with second row stomata 220, and second row air cavity 22 passes through second
Steam vent 220 is connected with compression chamber 231.
Oil eliminator 26 is provided with second row air cavity 22.Exhaust outlet 10 is connected with second row air cavity 22.
Below with reference to Fig. 9 descriptions according to second low back pressure compressor 100 of specific embodiment of the invention.
As shown in figure 9, in this embodiment, low back pressure compressor 100 includes：Housing 1 and compression mechanism, compression mechanism set
In housing 1, compression mechanism includes base bearing 24a, supplementary bearing 24b, 23, two exhaust partitions 25 of cylinder and two air bleeding valves.
Two exhaust partitions 25 are respectively first exhaust dividing plate 25a and second exhaust dividing plate 25b.
First exhaust dividing plate 25a is located between base bearing 24a and cylinder 23, first exhaust dividing plate 25a and base bearing 24a it
Between limit first row air cavity 20.Second exhaust dividing plate 25b is located between supplementary bearing 24b and cylinder 23, second exhaust dividing plate 25b
Second row air cavity 22 is limited and supplementary bearing 24b between.
Wherein supplementary bearing 24b includes body 241 and cover plate 242, and cover plate 242 is located on the lower surface of body 241, second row
Air bound plate 25b, second row air cavity 22 is limited between body 241 and cover plate 242.
First exhaust dividing plate 25a is provided with first row stomata 200, and second exhaust dividing plate 25b is provided with second row stomata
220, two air bleeding valves are respectively provided on first exhaust dividing plate 25a and second exhaust dividing plate 25b.
Oil eliminator 26 is provided with second row air cavity 22, second row air cavity 22 is connected with exhaust outlet 10, second row air cavity 22
Interior refrigerant from exhaust outlet 10 after the separation of oil eliminator 26 by discharging.
Below with reference to Figure 10 descriptions according to the 3rd low back pressure compressor 100 of specific embodiment of the invention.
As shown in Figure 10, in this embodiment, low back pressure compressor 100 includes：Housing 1, compression mechanism, the first oil sump 3
With the second oil sump 4, compression mechanism is located in housing 1, and compression mechanism includes base bearing 24a, supplementary bearing 24b, 23, two rows of cylinder
Air bound plate 25 and two air bleeding valves.Two exhaust partitions 25 are respectively first exhaust dividing plate 25a and second exhaust dividing plate 25b.
First exhaust dividing plate 25a is located between base bearing 24a and cylinder 23, first exhaust dividing plate 25a and base bearing 24a it
Between limit first row air cavity 20.Second exhaust dividing plate 25b is located between supplementary bearing 24b and cylinder 23, second exhaust dividing plate 25b
Second row air cavity 22 is limited and supplementary bearing 24b between.
Wherein supplementary bearing 24b includes body 241 and cover plate 242, and cover plate 242 is located on the lower surface of body 241, second row
Air bound plate 25b, second row air cavity 22 is limited between body 241 and cover plate 242.
First exhaust dividing plate 25a is provided with first row stomata 200, and second exhaust dividing plate 25b is provided with second row stomata
220, two air bleeding valves are respectively provided on first exhaust dividing plate 25a and second exhaust dividing plate 25b.
Oil eliminator 26 is provided with second row air cavity 22, second row air cavity 22 is connected with exhaust outlet 10, second row air cavity 22
Interior refrigerant from exhaust outlet 10 after the separation of oil eliminator 26 by discharging.
The first oil sump 3 is provided with first row air cavity 20, the first oil sump 3 is connected by the first oil supply gallery 30 with slide plate chamber 230
It is logical.The second oil sump 4 is provided with second row air cavity 22, the second oil sump 4 is connected by the second oil supply gallery 40 with slide plate chamber 230, warp
The lubricating oil that oil eliminator 26 separates is crossed to be deposited in the second oil sump 4.
Slide plate chamber 230 is arranged on cylinder 23, and positioned at the afterbody of slide plate, slide plate chamber 230 be first exhaust dividing plate 25a,
The sealing space that second exhaust dividing plate 25b and cylinder 23 are cooperatively formed.During compressor operation, because slide plate is past in vane slot
Multiple motion, the volume in slide plate chamber 230 can periodically change, when the volume of slide plate chamber 230 increases, the first oil supply gallery 30 and second
The lubricating oil that oil supply gallery 40 is sucked in lubricating oil, i.e. the first oil sump 3 and the second oil sump 4 simultaneously is entered into slide plate chamber 230, can
Reduce the amplitude that pressure reduces in slide plate chamber 230, when the volume of slide plate chamber 230 reduces, due to Action of Gravity Field, in slide plate chamber 230
Oil accumulates in bottom, and the second oil sump 4 is back to by the second oil supply gallery 40, and the first oil supply gallery of top 30 can rapidly will be more
Remaining high-pressure refrigerant imports first row air cavity 20, so as to reduce the pressure rise amplitude in slide plate chamber 230, by adjustment the
The sectional dimension of one oil supply gallery 30 and the second oil supply gallery 40, certain lubricating oil can be contained in slide plate chamber 230 and is ensured
In the case of the lubrication of slide plate side and sealing, efficiency and reliability without influenceing compressor.
Low back pressure compressor 100 according to embodiments of the present invention, can simplify compression mechanism, by the row for increasing simple structure
Air bound plate 25, exhaust cavity sealing structure is greatly simplified, and by optimizing the oil supply structure of slide plate chamber 230, ensure that slide plate chamber 230
While interior pressure and fuel feeding, the pressure oscillation in slide plate chamber 230 is reduced, improve the reliability of compressor.Therefore this hair
The bright scenario-frame of low back pressure compressor 100 is simple, and good manufacturability, practical application difficulty is low, and reliability is high, greatly improves low
The practical application feasibility of back pressure compressor 100.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (9)
1. a kind of low back pressure compressor, it is characterised in that including：Housing and compression mechanism, the housing be provided with exhaust outlet and
Gas returning port, the compression mechanism is located in the housing, and the compression mechanism has two discharge chambers, described two discharge chambers point
Not Wei first row air cavity and the second row air cavity that is connected with the first row air cavity, the first row air cavity is located at the second row
The top of air cavity, the second row air cavity is connected with the exhaust outlet, and the compression mechanism includes：
Cylinder assembly, the cylinder assembly includes at least one cylinder, and slide plate chamber is provided with each described cylinder；
Two bearings, described two bearings are respectively base bearing and supplementary bearing, and the base bearing is located at the upper of the cylinder assembly
On end face, the supplementary bearing is located on the lower surface of the cylinder assembly, bearing described at least one and the cylinder assembly it
Between be provided with exhaust partition, at least one of the first row air cavity and the second row air cavity by the exhaust partition with it is corresponding
The bearing limit；Be provided with the first oil sump in the first row air cavity, first oil sump by the first oil supply gallery with
The slide plate chamber connection.
2. low back pressure compressor according to claim 1, it is characterised in that between the base bearing and the cylinder assembly
The exhaust partition is provided with, the first row air cavity is limited between the exhaust partition and the base bearing.
3. low back pressure compressor according to claim 1, it is characterised in that between the supplementary bearing and the cylinder assembly
The exhaust partition is provided with, the second row air cavity is limited between the exhaust partition and the supplementary bearing.
4. low back pressure compressor according to claim 1, it is characterised in that be provided with the bearing of the exhaust partition
The first groove is provided with, the corresponding exhaust partition is provided with the second groove, first groove and second groove fit
Limit the corresponding discharge chamber.
5. low back pressure compressor according to claim 1, it is characterised in that the exhaust partition and the corresponding bearing
Between be provided with gasket seal.
6. low back pressure compressor according to claim 1, it is characterised in that the second oil is provided with the second row air cavity
Pond, second oil sump is connected by the second oil supply gallery with the slide plate chamber.
7. low back pressure compressor according to claim 1, it is characterised in that the cross-sectional area S1 of first oil supply gallery
Meet following relational expression：0.3mm2<S1<12.5mm2。
8. low back pressure compressor according to claim 6, it is characterised in that the cross-sectional area S2 of second oil supply gallery
Meet following relational expression：0.3mm2<S2<12.5mm2。
9. low back pressure compressor according to claim 1, it is characterised in that the thickness of the exhaust partition is more than 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410623773.5A CN104389790B (en) | 2014-11-07 | 2014-11-07 | Low back pressure compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN109595165A (en) * | 2017-09-30 | 2019-04-09 | 广东美芝制冷设备有限公司 | The compound compressor of high-low pressure segmentation |
| CN109595251A (en) * | 2017-09-30 | 2019-04-09 | 广东美芝制冷设备有限公司 | Parts of bearings and compressor, refrigerating plant with it |
| CN108087275A (en) * | 2017-12-28 | 2018-05-29 | 广东美芝制冷设备有限公司 | Low back pressure compressor |
| CN108397393A (en) * | 2018-04-17 | 2018-08-14 | 珠海凌达压缩机有限公司 | Pump assembly and compressor and air conditioner |
| WO2022082958A1 (en) * | 2020-10-21 | 2022-04-28 | 安徽美芝精密制造有限公司 | Compressor and refrigeration apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588290A (en) * | 2012-03-09 | 2012-07-18 | 珠海格力电器股份有限公司 | Rotary compressor of pump body with oil storage cavity |
| CN203161551U (en) * | 2013-03-25 | 2013-08-28 | 广东美芝精密制造有限公司 | Double-exhaust compressor and single-exhaust compressor |
| CN103511273A (en) * | 2013-05-09 | 2014-01-15 | 安徽美芝精密制造有限公司 | Rotary compressor |
| CN203560100U (en) * | 2013-07-18 | 2014-04-23 | 广东美芝制冷设备有限公司 | Rotary compressor and air conditioning equipment with rotary compressor |
| CN203655636U (en) * | 2014-01-06 | 2014-06-18 | 广东美芝制冷设备有限公司 | Low-backpressure compressor |
| CN204239259U (en) * | 2014-11-07 | 2015-04-01 | 广东美芝制冷设备有限公司 | Low back pressure compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013168194A1 (en) * | 2012-05-09 | 2013-11-14 | 三菱電機株式会社 | Airtight compressor and heat pump device |
-
2014
- 2014-11-07 CN CN201410623773.5A patent/CN104389790B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588290A (en) * | 2012-03-09 | 2012-07-18 | 珠海格力电器股份有限公司 | Rotary compressor of pump body with oil storage cavity |
| CN203161551U (en) * | 2013-03-25 | 2013-08-28 | 广东美芝精密制造有限公司 | Double-exhaust compressor and single-exhaust compressor |
| CN103511273A (en) * | 2013-05-09 | 2014-01-15 | 安徽美芝精密制造有限公司 | Rotary compressor |
| CN203560100U (en) * | 2013-07-18 | 2014-04-23 | 广东美芝制冷设备有限公司 | Rotary compressor and air conditioning equipment with rotary compressor |
| CN203655636U (en) * | 2014-01-06 | 2014-06-18 | 广东美芝制冷设备有限公司 | Low-backpressure compressor |
| CN204239259U (en) * | 2014-11-07 | 2015-04-01 | 广东美芝制冷设备有限公司 | Low back pressure compressor |
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