CN105134595A - Compressor - Google Patents
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- CN105134595A CN105134595A CN201510595500.9A CN201510595500A CN105134595A CN 105134595 A CN105134595 A CN 105134595A CN 201510595500 A CN201510595500 A CN 201510595500A CN 105134595 A CN105134595 A CN 105134595A
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Abstract
The invention discloses a compressor. The compressor comprises an air sucking component, an air supply component, an injection valve, a first-stage compression component, and a second-stage compression component and a first bearing component which are arranged on two axial sides of the first-stage compression component, wherein the first-stage compression component is provided with a first compression cavity; the second-stage compression component is provided with a second compression cavity; the first bearing component is provided with an intermediate cavity which is connected with an air discharging hole of the first compression cavity and an air sucking hole of the second compression cavity respectively; the air sucking component is used for supplying a first pressure refrigerant to the first compression cavity; the air supply component is used for supplying a second pressure refrigerant or a third pressure refrigerant to the intermediate cavity; when the second pressure refrigerant is supplied to the intermediate cavity, the second-stage compression component can work; when the third pressure refrigerant is supplied to the intermediate cavity, the second-stage compression component does not work; the injection valve is used for supplying the second pressure refrigerant to the first compression cavity. Through the compressor, the single-stage operation and the two-stage operation can be switched; and the compressor is high in efficiency during single-stage operation.
Description
Technical field
The present invention relates to Compressor Technology field, especially relate to a kind of compressor.
Background technique
Point out in correlation technique, air conditioning load changes with the change of external condition, when air-conditioning system load is large, as ultralow temperature heats, because the specific volume of refrigeration agent is large, compressor air suction mass flow rate reduces, except causing except compressor heating capacity significantly reduces, because mass flow rate reduces, compressor oil return difficulty, the heat that refrigeration agent is taken away reduces, compressor pump is easily caused to wear and tear and motor reliability decline, and make compressor assembly efficiency low, under such conditions, adopt the jet compression of twin-stage, effectively can increase gas mass flow, improve system heating capacity and efficiency, and improve pump housing lubrication.
But when operating mode refrigerating operatons such as centre refrigeration, the pressure ratio of compressor is little, single stage compression efficiency improves, if employing Two-stage Compression, because two cylinders work simultaneously, friction power loss can be caused to increase to be increased soon than cold, may cause the situation of refrigeration agent overcompression simultaneously, cause the efficiency of Two-stage Compression to reduce.Thus, person skilled proposes the variable conpacitance compressor that single twin-stage switches, and uses single mode when load is low, when load is large, uses Bi-level mode, to reach the object improving compressor capacity and efficiency.But compressor is when single mode is run, and owing to dragging a piston operation, its power can be higher than common compressor more, thus affect the final efficiency of compressor.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, the invention reside in and propose a kind of compressor, described compressor can realize the multistage jet operation of varying capacity.
According to compressor of the present invention, comprising: housing; Compressing mechanism, described compressing mechanism is located in described housing, described compressing mechanism comprises first order compression assembly and is located at second level compression assembly and the clutch shaft bearing assembly of the axial both sides of described first order compression assembly, described clutch shaft bearing assembly has intermediate cavity, described first order compression assembly has the first compression chamber, described second level compression assembly has the second compression chamber, described intermediate cavity is communicated with the intakeport of described second compression chamber with the relief opening of described first compression chamber respectively, and the relief opening of described second compression chamber is communicated to the inside of described housing; Getter assembly, described getter assembly is used for supplying the first pressure refrigerant to described first compression chamber; Gas supply assembly, described gas supply assembly is used for supplying the second pressure refrigerant or the 3rd pressure refrigerant to described intermediate cavity, when to described intermediate cavity supply described second pressure refrigerant, described second level compression assembly can work, when to described intermediate cavity supply described 3rd pressure refrigerant, described second level compression assembly does not work; And injection valve, described injection valve is used for feeding described second pressure refrigerant to described first compression chamber, wherein, the pressure of described first pressure refrigerant is less than the pressure of described second pressure refrigerant, and the pressure of described second pressure refrigerant is less than the pressure of described 3rd pressure refrigerant.
According to compressor of the present invention, the multistage jet operation of varying capacity can be realized, thus improve the adaptive capacity of compressor under various ambient temperature, especially improve compressor heating capacity under cryogenic and efficiency, improve compressor performance under low load conditions simultaneously.
In one embodiment of the invention, the inside of described housing is communicated with to provide described 3rd pressure refrigerant to described gas supply assembly with described gas supply assembly.
In one embodiment of the invention, described second level compression assembly comprises: the second cylinder, described second cylinder have described second compression chamber and the second vane slot, the tip of described second vane slot is communicated with described second compression chamber, and the rear end of described second vane slot is communicated with the inside of described housing; With the second slide plate, described second slide plate is located in described second vane slot slidably.
Further, described second level compression assembly comprises further: be located at described second cylinder axis to the second bearing unit of both sides and baffle assembly, and at least one in described second bearing unit and described baffle assembly is provided with the magnetic element for adsorbing described second slide plate.
In one embodiment of the invention, described compressing mechanism comprises the baffle assembly be located between described first order compression assembly and described second level compression assembly further, described first order compression assembly comprises: the first cylinder and first piston, described first cylinder is formed with described first compression chamber, described first piston is rollably located in described first compression chamber, described compressing mechanism is formed with the jetburner be communicated with described first compression chamber, described injection valve is configured to open described jetburner when the pressure of described second pressure refrigerant is greater than the pressure in described first compression chamber, described jetburner is closed when being less than the pressure in described first compression chamber when the pressure of described second pressure refrigerant.
Alternatively, described jetburner is formed on described first cylinder, described first cylinder is formed with further the injection channel be communicated with described jetburner, and described injection valve is be arranged on the valve member on described injection channel.
Alternatively, described jetburner is formed on described baffle assembly and/or described clutch shaft bearing assembly, and described jetburner is configured to be opened and closed by described first piston in the process of rotating at described first piston, and described injection valve is described first piston.
Alternatively, the injection channel that described baffle assembly and/or described clutch shaft bearing assembly are formed with described jetburner and are communicated with described jetburner, described injection valve comprises the valve member be arranged on described injection channel.
Further, described jetburner is configured to be opened and closed by described first piston in the process of rotating at described first piston further, and described injection valve comprises described first piston further.
In one embodiment of the invention, described clutch shaft bearing assembly comprises clutch shaft bearing and cover plate, and described clutch shaft bearing is located between described first order compression assembly and described cover plate, limits described intermediate cavity between described clutch shaft bearing and described cover plate.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the compressor according to the embodiment of the present invention;
Fig. 2 is the sectional view of the compressor shown in Fig. 1;
Fig. 3 is the schematic diagram of the compressing mechanism shown in Fig. 2;
Fig. 4 is the sectional view along A-A line in Fig. 3;
Fig. 5 is the explosive view of the injection valve shown in Fig. 4;
Fig. 6 is the schematic diagram of compressing mechanism in accordance with another embodiment of the present invention;
Fig. 7 is the schematic diagram of the compressing mechanism according to another embodiment of the present invention.
Reference character:
100: compressor;
1: housing;
2: motor; 21: stator; 22: rotor;
3: compressing mechanism; 31: first order compression assembly; 311: the first cylinders; 3111: intakeport;
312: the first slide plates; 313: spring; 314: first piston;
32: second level compression assembly; 321: the second cylinders;
322: the second slide plates; 323: the second pistons;
324: magnetic element;
33: clutch shaft bearing assembly; 331: clutch shaft bearing; 3311: first row air valve; 332: cover plate;
34: the second bearing uniies; 341: the second bearings; 3411: second row air valve;
342: baffler; 3421: exhaust perforation;
35: baffle assembly; 351: the first dividing plates; 352: second partition;
36: bent axle; 361: the first eccentric parts; 362: the second eccentric parts;
4: getter assembly; 41: liquid-storage container; 42: sucking pipe;
5: gas supply assembly; 51: three-way valve; 52: air supply pipe;
53: high pressure breathing pipe; 54: middle pressure breathing pipe; 55: injection pipe;
6: injection valve; 61: lift stopper; 62: check valve sheet; 63: screw;
S1: the first exhaust passage; S2: air supply channel; S3: the second exhaust passage; S4: injection channel; S5: jetburner;
C1: intermediate cavity; C2: the first compression chamber; C3: the second compression chamber; C4: silencing cavity.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.
Below with reference to Fig. 1-Fig. 7, the compressor 100 according to the embodiment of the present invention is described.
As shown in Figure 1, Figure 2 with shown in Fig. 6, according to the compressor 100 of the embodiment of the present invention, comprising: housing 1, compressing mechanism 3, getter assembly 4, gas supply assembly 5 and injection valve 6.
With reference to Fig. 2, compressing mechanism 3 is located in housing 1, compressing mechanism 3 comprises first order compression assembly 31, second level compressor units 32 and clutch shaft bearing assembly 33, second level compressor units 32 and clutch shaft bearing assembly 33 are located at the axial both sides of first order compression assembly 31, such as in the example of fig. 1, second level compressor units 32 is located at the top of first order compression assembly 31, and clutch shaft bearing assembly 33 is located at the below of first order compression assembly 31.
With reference to Fig. 3, clutch shaft bearing assembly 33 has intermediate cavity C1, first order compression assembly 31 has the first compression chamber C2, second level compression assembly 32 has the second compression chamber C3, intermediate cavity C1 is communicated with the intakeport of the second compression chamber C3 with the relief opening of the first compression chamber C2 respectively, the relief opening of the second compression chamber C3 is communicated to the inside of housing 1, that is, refrigerant in first compression chamber C2 can be discharged in intermediate cavity C1, refrigerant in intermediate cavity C1 can be discharged in the second compression chamber C3, and it is inner that the refrigerant in the second compression chamber C3 can be discharged to housing 1.
With reference to Fig. 2, getter assembly 4 is for supplying the first pressure refrigerant to the first compression chamber C2.Such as, getter assembly 4 can comprise liquid-storage container 41, and the first compression chamber C2 can suck the first pressure refrigerant (such as low pressure refrigerant) in liquid-storage container 41, thus can compress the first pressure refrigerant sucked when first order compression assembly 31 works.See figures.1.and.2, gas supply assembly 5 is for supplying the second pressure refrigerant (such as pressure refrigerant) or the 3rd pressure refrigerant (such as high pressure refrigerant) to intermediate cavity C1.Wherein, the pressure of the first pressure refrigerant is less than the pressure of the second pressure refrigerant, and the pressure of the second pressure refrigerant is less than the pressure of the 3rd pressure refrigerant.
Such as in a concrete example of the present invention, gas supply assembly 5 can comprise three-way valve 51, three-way valve 51 has two input ends and an output terminal, wherein, input end can with in the refrigeration system of compressor 100 place in press breathing pipe 54 to be communicated with to obtain the second pressure refrigerant (as middle pressure refrigerant), another input end can be communicated with to obtain the 3rd pressure refrigerant (as high pressure refrigerant) with the inside of housing 1 by high pressure breathing pipe 53, and output terminal can be communicated with the intermediate cavity C1 on clutch shaft bearing assembly 33 by air supply pipe 52.Thus, can control to be pass into the second pressure refrigerant to intermediate cavity C1 or pass into the 3rd pressure refrigerant to intermediate cavity C1 by manipulation three-way valve 51.
Particularly, second level compression assembly 32 is configured to when supplying the second pressure refrigerant to intermediate cavity C1, second level compression assembly 32 can work, the i.e. in harness ability of second level compression assembly 32 tool (such as when bent axle 36 hereinafter described rotates, second level compression assembly 32 can carry out compression work); When supplying the 3rd pressure refrigerant to intermediate cavity C1, second level compression assembly 32 does not work, the i.e. second level compression assembly 32 not in harness ability of tool (even if such as when bent axle 36 hereinafter described rotates, second level compression assembly 32 can not carry out compression work).Thus, can by controlling the refrigerant type that gas supply assembly 5 feeds to intermediate cavity C1, control compressor 100 and switch between single stage compression and Two-stage Compression, concrete switch instances is as follows.
Under cooling condition, compressor 100 carries out single stage compression.Particularly, gas supply assembly 5 controls to feed the 3rd pressure refrigerant (such as high pressure refrigerant) to intermediate cavity C1, now, second level compression assembly 32 cannot carry out compression work, after the first compression chamber C2 sucks the first pressure refrigerant from getter assembly 4, first order compression assembly 31 compresses the refrigerant sucked, refrigerant after compression is fed in the second compression chamber C3 by intermediate cavity C1, because second level compression assembly 32 cannot carry out compression work, therefore the refrigerant entering the second compression chamber C3 is directly discharged to housing 1 inside, thus realizes single stage compression.
Under worst cold case, compressor 100 carries out Two-stage Compression.Particularly, gas supply assembly 5 controls to feed the second pressure refrigerant (such as pressure refrigerant) to intermediate cavity C1, now, second level compression assembly 32 can carry out compression work, after the first compression chamber C2 sucks the first pressure refrigerant from getter assembly 4, first order compression assembly 31 compresses the refrigerant sucked, refrigerant after compression is fed in the second compression chamber C3 by intermediate cavity C1, because second level compression assembly 32 can carry out compression work, therefore the refrigerant of the second compression chamber C3 is entered by second level compression assembly 32 second compression (i.e. secondary compression) again, housing 1 is discharged to again afterwards inner from the second compression chamber C3, thus realize Two-stage Compression.Thus, compressor 100 can realize the multistage operation of varying capacity.
Further, compressor 100 also comprises injection valve 6, and injection valve 6 is for feeding the second pressure refrigerant (as middle pressure refrigerant) to the first compression chamber C2.Such as in the example of Fig. 2 and Fig. 6, injection valve 6 can be connected with flash vessel by injection pipe 55, and flash vessel can feed the second pressure refrigerant (such as pressure refrigerant) by injection pipe 55 to injection valve 6.Specifically, in the process of first order compression assembly 31 compression refrigerant, that is, refrigerant is in the process of one stage of compression, the second pressure refrigerant can be sprayed by injection valve 6 to the first compression chamber C2, thus realize air injection enthalpy-increasing, improve work efficiency and the capacity of one stage of compression.
According to the compressor 100 of the embodiment of the present invention, the refrigerant type fed to intermediate cavity C1 is regulated by gas supply assembly 5, feed the second pressure refrigerant by injection valve 6 to intermediate cavity C1 simultaneously, compressor 100 can be made to realize the multistage jet operation of varying capacity, thus improve the adaptive capacity of compressor 100 under various ambient temperature, especially improve compressor 100 heating capacity under cryogenic and efficiency, improve compressor 100 performance under low load conditions simultaneously.
More particularly, according to the compressor 100 of the embodiment of the present invention, can regulate in real time with the change of external condition, when load is less, compressor 100 can select single-stage to run, when load is larger, compressor 100 can select twin-stage to run, and adapts to external temperature wide variation, and, compressor 100, when single-stage is run, increases and carries out directly jet to the first cylinder 311 of first order compression assembly 31, thus improve efficiency and the performance of compressor 100.
Referring to Fig. 2-Fig. 7, the formation of a kind of compressing mechanism 3 according to the embodiment of the present invention is described.
In the present embodiment, compressor 100 can be that rotary compressor is (certain, the present invention is not limited thereto, compressor 100 can also be the compressor of other types), now, compressing mechanism 3 can comprise: clutch shaft bearing assembly 33, second bearing unit 34, first cylinder assembly 31, second cylinder assembly 32 and baffle assembly 35, wherein, first cylinder assembly 31 can comprise the first cylinder 311, first slide plate 312 and first piston 314, second cylinder assembly 32 can comprise the second cylinder 321, second slide plate 322 and the second piston 323.
Wherein, first cylinder 311 and the second cylinder 321 are connected to the axial two ends of baffle assembly 35, clutch shaft bearing assembly 33 is connected to one end away from baffle assembly 35 of the first cylinder 311, and the second bearing unit 34 is connected to one end away from baffle assembly 35 of the second cylinder 321.
Clutch shaft bearing assembly 33 and limit the first compression chamber C2 between baffle assembly 35 and the first cylinder 311, the first eccentric part 361 that first piston 314 is set in bent axle 36 is rollably engaged in the first compression chamber C2, second bearing unit 34 and limit the second compression chamber C3 between baffle assembly 35 and the second cylinder 321, the second eccentric part 362 that second piston 323 is set in bent axle 36 is rollably engaged in the second compression chamber C3, first cylinder 311 is formed with the first vane slot, first slide plate 312 is engaged in the first vane slot slidably, second cylinder 321 is formed with the second vane slot, second slide plate 322 is engaged in the second vane slot slidably.
Referring to Fig. 2 and Fig. 3, a kind of technological scheme obtaining the first pressure refrigerant according to the first order compression assembly 31 in the above embodiment of the present invention from getter assembly 4 is described.
First cylinder 311 is formed with intakeport 3111, the outer circumferential face of the first cylinder 311 is run through in one end of intakeport 3111, the other end is communicated to the first compression chamber C2, now, getter assembly 4 can comprise liquid-storage container 41 and sucking pipe 42, one end of sucking pipe 42 is communicated to liquid-storage container 41 inside, one end of the other end of sucking pipe 42 is run through and is stretched into housing 1 and be engaged in intakeport 3111, thus bent axle 36 drive first piston 314 to rotate in the first compression chamber C2 process in, when pressure lower than liquid-storage container 41 inside of the pressure of intakeport 3111, the first pressure refrigerant in liquid-storage container 41 can flow to the first compression chamber C2 (such as can flow along the Z2 direction shown in Fig. 3) by getter assembly 4.
Referring to Fig. 2 and Fig. 3, a kind of technological scheme obtaining the second pressure refrigerant or the 3rd pressure refrigerant according to the bearing unit in the above embodiment of the present invention from gas supply assembly 5 is described.
Clutch shaft bearing assembly 33 can comprise clutch shaft bearing 331 and cover plate 332, and clutch shaft bearing 331 is located between first order compression assembly 31 and cover plate 332, limits intermediate cavity C1 between clutch shaft bearing 331 and cover plate 332.Thus, convenient processing intermediate cavity C1.Such as in the figure 2 example, clutch shaft bearing 331 is connected to the bottom of the first cylinder 311, the lower end surface of clutch shaft bearing 331 is formed with the groove to being recessed on, and cover plate 332 is located at the bottom of clutch shaft bearing 331 jointly to limit intermediate cavity C1 with groove.
With reference to Fig. 2, clutch shaft bearing 331 can be formed with air supply channel S2, the outer circumferential face of clutch shaft bearing 331 is run through in one end of air supply channel S2, the other end is communicated to intermediate cavity C1, now, gas supply assembly 5 can comprise three-way valve 51 and air supply pipe 52, the output terminal of three-way valve 51 is connected to one end of air supply pipe 52, the other end of air supply pipe 52 stretches into housing 1 and is engaged in air supply channel S2, thus gas supply assembly 5 can feed the second pressure refrigerant or the 3rd pressure refrigerant (such as can along the Z1 direction air feed shown in Fig. 3) to intermediate cavity C1.
Referring to Fig. 3 and Fig. 6, a kind of technological scheme be vented to second level compression assembly 32 by intermediate cavity C1 according to the first order compression assembly 31 in the above embodiment of the present invention is described.
First cylinder 311 is formed with the first row gas port be communicated with the first compression chamber C2, clutch shaft bearing 331 is formed with the first exhaust passage S1 be communicated with intermediate cavity C1 with first row gas port, exhaust passage is provided with first row air valve 3311, when the pressure of the first exhaust ports is greater than the pressure of intermediate cavity C1, first row air valve 3311 is opened under the effect of pressure reduction, and the first compression chamber C2 can be vented to intermediate cavity C1 (such as can be vented along the Z3 direction shown in Fig. 3).
Clutch shaft bearing 331, first cylinder 311, dividing plate, the second cylinder 321 are formed with communicating passage, the two ends of communicating passage are communicated to intermediate cavity C1 and the second compression chamber C3 respectively, thus gas supply assembly 5 feeds after refrigerant that second pressure refrigerant of intermediate cavity C1 or the 3rd pressure refrigerant and the first compression chamber C2 enter intermediate cavity C1 mixes and can feed the second compression chamber C3 (such as can be vented along the Z4 direction shown in Fig. 3) by communicating passage.
Referring to Fig. 2, Fig. 3 and Fig. 6, describe according to a kind of technological scheme of the second level compression assembly 32 in the above embodiment of the present invention to housing 1 exhaust gas inside.
Second bearing unit 34 can comprise the second bearing 341 and baffler 342, second bearing 341 is located at the top of the second cylinder 321, on the neck that baffler 342 is set in the second bearing 341 and and jointly limit silencing cavity C4 between the upper-end surface of the flange part of the second bearing 341, second cylinder 321 is formed with the second exhaust port be communicated with the second compression chamber C3, second bearing 341 is formed with the second exhaust passage S3 be communicated with silencing cavity C4 with second exhaust port, second row air valve 3411 is provided with in second exhaust passage S3, baffler 342 is formed with the exhaust be communicated with housing 1 inside with silencing cavity C4 and bores a hole 3421, when the pressure at second exhaust port place is greater than the pressure of silencing cavity C4, second row air valve 3411 is opened under differential pressure, second compression chamber C3 can be vented to silencing cavity C4, gas in silencing cavity C4 can flow into housing 1 inside (such as can be vented along the Z5 direction shown in Fig. 3) by exhaust perforation 3421.Wherein, the refrigerant that silencing cavity C4 discharges to housing 1 inside is the 3rd pressure refrigerant.
Referring to Fig. 7, a kind of technological scheme according to first order compression assembly 31 compression refrigerant in the above embodiment of the present invention is described.
First order compression assembly 31 can comprise spring 313 further, spring 313 is compressiblly located at the rear side of the first slide plate 312, the front end of spring 313 is connected with the rear end of the first slide plate 312, the rear end of spring 313 is connected with the first cylinder 311, spring 313 often promotes the first slide plate 312 and moves towards the direction at the first compression chamber C2 center, all the time only support with the periphery wall of first piston 314 to make the tip of the first slide plate 312, thus the first compression chamber C2 is separated into and the first air aspiration cavity and first row air cavity by the first slide plate 312 and first piston 314, wherein, first air aspiration cavity is communicated with the intakeport 3111 of the first cylinder 3111, first row air cavity is communicated with the first row gas port of the first cylinder 3111.
When first piston 314 along with bent axle 36 rotation along the first compression chamber C2 perisporium roll time, first slide plate 312 reciprocatingly slides under the effect of first piston 314 and spring 313 in the first vane slot, the volume size checker of the first air aspiration cavity and first row air cavity, first air aspiration cavity can suck the first pressure refrigerant by intakeport 3111 from getter assembly 4, first row air cavity can be compressed the refrigerant sucked and be discharged by first row gas port, so repeatedly, first order compression assembly 31 realizes the one stage of compression effect to refrigerant.
Referring to Fig. 7, a kind of technological scheme according to second level compression assembly 32 compression refrigerant in the above embodiment of the present invention is described.
Second slide plate 322 is located in the second vane slot slidably, wherein, the tip of the second vane slot is communicated with the second compression chamber C3, the rear end of the second vane slot is communicated with housing 1 inside, thus the pressure of the rear end of the second slide plate 322 is housing 1 internal pressure, when the pressure of the second slide plate 322 tip is less than the pressure of slide plate rear end, the pressure of housing 1 inside often can promote the second slide plate 322 and move towards the direction at the second compression chamber C3 center, thus realizes the loading of the second slide plate 322.Such as when gas supply assembly 5 passes into the second pressure refrigerant to intermediate cavity C1, when what housing 1 inside was filled is the 3rd pressure refrigerant, produces pressure reduction between the tip of the second slide plate 322 and rear end, the loading of the second slide plate 322 can be realized.
When the second slide plate 322 loads, the tip of the second slide plate 322 can be made only to support with the periphery wall of the second piston 323 all the time, thus the second compression chamber C3 is separated into and the second air aspiration cavity and second row air cavity by the second slide plate 322 and the second piston 323, wherein, second air aspiration cavity is communicated with the intakeport of the second cylinder 321, and second row air cavity is communicated with the second exhaust port of the second cylinder 321.When the second piston 323 along with bent axle 36 rotation along the second compression chamber C3 perisporium roll time, second slide plate 322 reciprocatingly slides under the effect of the second piston 323 and spring 313 in the second vane slot, the volume size checker of the second air aspiration cavity and second row air cavity, thus the second air aspiration cavity can carry out two-stage compression to the refrigerant entering the second compression chamber C3.
In like manner known, when the pressure of the second slide plate 322 tip equals the pressure of the second slide plate 322 rear end, the pressure of housing 1 inside cannot promote the second slide plate 322 and move towards the direction at the second compression chamber C3 center, thus realizes the unloading of the second slide plate 322.Such as when gas supply assembly 5 passes into the 3rd pressure refrigerant to intermediate cavity C1, when what housing 1 inside was filled is also the 3rd pressure refrigerant, the tip of the second slide plate 322 and rear end can realize the unloading of the second slide plate 322 without pressure reduction.In addition, when the pressure of the second slide plate 322 tip is greater than the pressure of the second slide plate 322 rear end, the second slide plate 322 is unloaded equally.
When the second slide plate 322 unloads, the tip of the second slide plate 322 only cannot support with the periphery wall of the second piston 323, thus the second compression chamber C3 cannot be separated into and the second air aspiration cavity and second row air cavity by the second slide plate 322 and the second piston 323, also just cannot realize the effect of refrigerant two-stage compression.That is, when the second slide plate 322 unloads, second level compression assembly 32 does not work.
Preferably, with reference to Fig. 7, baffle assembly 35 comprises second partition 352, second partition 352 is located at the side away from the second bearing 341 of the second cylinder 321, such as, second partition 352 can be located between the first cylinder 311 and the second cylinder 321, at least one in second bearing 341 and second partition 352 is provided with the magnetic element 324 (such as magnet) for adsorbing described second slide plate 322, that is, second partition 352 can be provided with the magnetic element 324 for adsorbing described second slide plate 322, second bearing 341 also can be provided with the magnetic element 324 for adsorbing described second slide plate 322.Thus, when the second slide plate 322 is loaded, the followability of the second slide plate 322 is stronger, and second level compression assembly 32 can realize better compression effectiveness, in other words, by arranging magnetic element 324, the second slide plate 322 can be made more stably to remain in the second vane slot, not because air pressure fluctuation produces motion, avoid the second slide plate 322 and the second piston 323 or the second cylinder 321 to produce and collide, avoid damage parts, improve the reliability of compressor 100.
To sum up, air pressure can be adopted control the second slide plate 322, when compressor 100 single-stage is run, the 3rd pressure refrigerant is passed in intermediate cavity C1, equal with housing 1 air pressure inside, thus to the second slide plate 322 release, because the second slide plate 322 does not pass through Spring driving, the second slide plate 322 is now failure to actuate, thus reduce the abrasion of compressor 100, improve the efficiency of compressor 100, and do not compress the second piston 323 due to now the second slide plate 322, thus also can reduce the frictional loss between the second slide plate 322 tip and the second piston 323.When compressor 100 twin-stage runs; the second pressure refrigerant is passed in intermediate cavity C1; be less than housing 1 air pressure inside; now; second slide plate 322 two ends have comparatively small pressure difference, thus the second slide plate 322 in the effect lower slider of pressure reduction, now also can reduce the abrasion of compressor 100; protect the second slide plate 322, reduce the wearing and tearing of the second slide plate 322.
Thus, when in the process that compressor 100 works, the gas source of intermediate cavity C1 is switched by three-way valve 51, thus switching compressor 100 is single stage compression or Two-stage Compression, particularly, under cooling condition, three-way valve 51 controls intermediate cavity C1 and is communicated with high pressure breathing pipe 53, the gas entering into intermediate cavity C1 and the second cylinder 321 is the 3rd pressure refrigerant, therefore, the Suck and exhaust pressure of the second cylinder 321 is equal, second cylinder 321 unloads, first cylinder 311 sucks the first pressure refrigerant from liquid-storage container 41, carry out single stage compression, simultaneously, the second pressure refrigerant from flash vessel is directly injected in the first cylinder 311, air injection enthalpy-increasing is carried out to the first cylinder 311, improve the efficiency of single stage compression.
Under worst cold case, three-way valve 51 controls intermediate cavity C1 and is communicated with middle pressure breathing pipe 54, first cylinder 311 absorbs the first pressed gas from evaporator outlet, intermediate cavity C1 sucks the second pressed gas from flash vessel, second cylinder 321 loads, now, the gas of intermediate cavity C1 is the mixed gas of the gas after the first cylinder 311 compresses and the second pressure refrigerant from flash vessel, after second cylinder 321 sucks the second pressed gas, carry out second time compression, be discharged to housing 1 after gas compression is become the 3rd pressed gas inner, thus realize two-stage compression.
Referring to Fig. 3-Fig. 7, describe according to several technological schemes of the first order compression assembly 31 in the above embodiment of the present invention by injection valve 6 air injection enthalpy-increasing.
Specifically, compressing mechanism 3 is formed with the jetburner S5 be communicated with the first compression chamber C2, injection valve 6 is configured to open jetburner S5 when the pressure of the second pressure refrigerant is greater than the pressure in the first compression chamber C2, cuts out jetburner S5 when the pressure of the second pressure refrigerant is less than the pressure in the first compression chamber C2.Thus, automatically can be controlled the opening and closing of injection valve 6 by pressure difference, thus can reliably realize spraying increasing enthalpy effect.
Embodiment one,
Be formed on the first cylinder 311 with reference to Fig. 4 and Fig. 5, jetburner S5, the first cylinder 311 is formed with further the injection channel S4 be communicated with jetburner S5, injection valve 6 is for being arranged on the valve member on injection channel S4.With reference to Fig. 3, injection channel S4 can run through the first cylinder 311 along the radial direction of the first cylinder 311, and the outer circumferential face of the first cylinder 311 is run through in the outer end of injection channel S4, the inner of injection channel S4 is through to the first compression chamber C2, valve member can comprise the lift stopper 61 and check valve sheet 62 that spray valve seat and be arranged on injection valve seat, wherein, spray on valve seat and be formed with the perforation not blocking injection channel S4, lift stopper 61 can be fixed on the side of the vicinity first compression chamber C2 spraying valve seat by screw 63 and not block injection channel S4, check valve sheet 62 is fixed on by screw 63 sprays between valve seat and lift stopper 61, check valve sheet 62 is elastic component and is often adjacent to spray valve seat with closed perforation, close injection channel S4, when gas through perforations promotes check valve sheet 62, the direction motion of check valve sheet 62 towards lift stopper 61 can be promoted to discharge perforation, open injection channel S4.
Specifically, when the pressure of the second pressure refrigerant is greater than the pressure in the first compression chamber C2, second pressure refrigerant can promote the direction motion of check valve sheet 62 towards lift stopper 61 to make injection channel S4 open, can flow in the first compression chamber C2 to make the second pressure refrigerant, when the pressure of the second pressure refrigerant is less than the pressure in the first compression chamber C2, check valve sheet 62 is moved towards the direction of spraying valve seat to close injection channel S4 under the effect of natural resiliency power, thus the second pressure refrigerant can not flow in the first compression chamber C2, and can prevent the refrigerant in the first compression chamber C2 from being flowed out (namely preventing from flowing backwards) by valve member simultaneously.
Thus, the injection of the present embodiment increases enthalpy mode and is convenient to realize, and it is high to realize reliability.
Embodiment two,
Jetburner S5 is formed on baffle assembly 35 and/or clutch shaft bearing assembly 33, and jetburner S5 is configured to be opened and closed by first piston 314 in the process of rotating at first piston 314, and injection valve 6 is first piston 314.That is, can open or close jetburner S5 in the process that first piston 314 rolls, realize spraying into or blocking of the second pressure refrigerant.
Such as in the example of fig. 6, it is upper and compress with first on the first cylinder 311 and be communicated with that jetburner S5 can be formed in baffle assembly 35 (and/or clutch shaft bearing assembly 33), baffle assembly 35 (and/or clutch shaft bearing assembly 33) is formed with injection channel S4 further, one end of injection channel S4 is communicated with jetburner S5, the outer circumferential face of the through baffle assembly 35 (and/or clutch shaft bearing assembly 33) of the other end of injection channel S4 is for infeed second pressure refrigerant, injection channel S4 is fed when the second pressure refrigerant moment, and when jetburner S5 opens by first piston 314, second pressure refrigerant can spray in the first compression chamber C2, injection channel S4 is fed when the second pressure refrigerant moment, and when jetburner S5 closes by first piston 314, second pressure refrigerant cannot spray in the first compression chamber C2.
Like this, be injection valve 6 with first piston 314, when first piston 314 forwards several angle to, jetburner S5 is communicated with the first compression chamber C2, when first piston 314 forwards other angles to, jetburner S5 is covered by first piston 314, thus, the injection of the present embodiment increases enthalpy mode and is convenient to realize, and it is high to realize reliability.
Embodiment three,
With reference to Fig. 6, the injection channel S4 that baffle assembly 35 and/or clutch shaft bearing assembly 33 are formed with jetburner S5 and are communicated with jetburner S5, that is, jetburner S5 and injection channel S4 can all be formed on baffle assembly 35, jetburner S5 and injection channel S4 also can all be formed on clutch shaft bearing assembly 33, jetburner S5 and injection channel S4 can also to be formed on baffle assembly 35 and to be formed on clutch shaft bearing assembly 33 simultaneously, injection valve 6 comprises the valve member be arranged on injection channel S4, wherein valve member is identical with the valve member in above-described embodiment one, here no longer describe in detail.
Example one, when jetburner S5 is only formed on clutch shaft bearing assembly 33, jetburner S5 and injection channel S4 can be formed on clutch shaft bearing 331, and valve member is arranged in the injection channel S4 on clutch shaft bearing 331.
Example two, when jetburner S5 is only formed on clutch shaft bearing assembly 33, clutch shaft bearing assembly 33 can comprise the isolating plate be located between clutch shaft bearing 331 and the first cylinder 311, jetburner S5 and injection channel S4 can all be formed on isolating plate, and valve member is arranged in the injection channel S4 on isolating plate.Or jetburner S5 is formed on isolating plate, injection channel S4 is formed on clutch shaft bearing 331, and valve member is arranged in the injection channel S4 on clutch shaft bearing 331.
Example three, when jetburner S5 is only formed on baffle assembly 35, when baffle assembly 35 only comprises the first dividing plate be located between the first cylinder 311 and the second cylinder 321, jetburner S5 and injection channel S4 can be formed on the first dividing plate, and valve member is arranged in the injection channel S4 on the first dividing plate.
Example four, when jetburner S5 is only formed on baffle assembly 35, when baffle assembly 35 comprises the first dividing plate 351 being located at the first cylinder 311 top and the second partition 352 being located at the first dividing plate 351 top, jetburner S5 can be formed on the first dividing plate 351 and to be communicated with the first compression chamber C2, injection channel S4 can be formed on second partition 352, and valve member is arranged in the injection channel S4 on second partition 352.
Thus, the injection of the present embodiment increases enthalpy mode and is convenient to realize, and it is higher to realize reliability.
Embodiment four,
The present embodiment is roughly the same with the technological scheme of above-described embodiment three, difference is, the present embodiment meets further on the basis of embodiment three: jetburner S5 is configured to be opened and closed by first piston 314 in the process of rotating at first piston 314 further, and injection valve 6 comprises first piston 314 further.That is, jetburner S5 is except being controlled except open and-shut mode by valve member, and jetburner S5 also controls closed condition by first piston 314 simultaneously, thus further reduces clearance volume and reflux problem, improves the overall efficiency of compressor 100.
In addition, be all known according to other configuration examples of the compressor 100 of the embodiment of the present invention for those of ordinary skills as motor 2 grade and operation, be not described in detail here.Such as, can comprise stator 21 and rotor 22 according to the motor 2 of the compressor 100 of the embodiment of the present invention, rotor 22 can be fixing with driving crank 36 rotary work with bent axle 36 hot jacket.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection, can also be communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. a compressor, is characterized in that, comprising:
Housing;
Compressing mechanism, described compressing mechanism is located in described housing, described compressing mechanism comprises first order compression assembly and is located at second level compression assembly and the clutch shaft bearing assembly of the axial both sides of described first order compression assembly, described clutch shaft bearing assembly has intermediate cavity, described first order compression assembly has the first compression chamber, described second level compression assembly has the second compression chamber, described intermediate cavity is communicated with the intakeport of described second compression chamber with the relief opening of described first compression chamber respectively, and the relief opening of described second compression chamber is communicated to the inside of described housing;
Getter assembly, described getter assembly is used for supplying the first pressure refrigerant to described first compression chamber;
Gas supply assembly, described gas supply assembly is used for supplying the second pressure refrigerant or the 3rd pressure refrigerant to described intermediate cavity, when to described intermediate cavity supply described second pressure refrigerant, described second level compression assembly can work, when to described intermediate cavity supply described 3rd pressure refrigerant, described second level compression assembly does not work; And
Injection valve, described injection valve is used for feeding described second pressure refrigerant to described first compression chamber, wherein, the pressure of described first pressure refrigerant is less than the pressure of described second pressure refrigerant, and the pressure of described second pressure refrigerant is less than the pressure of described 3rd pressure refrigerant.
2. compressor according to claim 1, is characterized in that, the inside of described housing is communicated with to provide described 3rd pressure refrigerant to described gas supply assembly with described gas supply assembly.
3. compressor according to claim 1, is characterized in that, described second level compression assembly comprises:
Second cylinder, described second cylinder has described second compression chamber and the second vane slot, and the tip of described second vane slot is communicated with described second compression chamber, and the rear end of described second vane slot is communicated with the inside of described housing; With
Second slide plate, described second slide plate is located in described second vane slot slidably.
4. compressor according to claim 3, it is characterized in that, described second level compression assembly comprises further: be located at described second cylinder axis to the second bearing unit of both sides and baffle assembly, and at least one in described second bearing unit and described baffle assembly is provided with the magnetic element for adsorbing described second slide plate.
5. compressor according to claim 1, it is characterized in that, described compressing mechanism comprises the baffle assembly be located between described first order compression assembly and described second level compression assembly further, described first order compression assembly comprises: the first cylinder and first piston, described first cylinder is formed with described first compression chamber, described first piston is rollably located in described first compression chamber, described compressing mechanism is formed with the jetburner be communicated with described first compression chamber, described injection valve is configured to open described jetburner when the pressure of described second pressure refrigerant is greater than the pressure in described first compression chamber, described jetburner is closed when being less than the pressure in described first compression chamber when the pressure of described second pressure refrigerant.
6. compressor according to claim 5, it is characterized in that, described jetburner is formed on described first cylinder, described first cylinder is formed with further the injection channel be communicated with described jetburner, and described injection valve is be arranged on the valve member on described injection channel.
7. compressor according to claim 5, it is characterized in that, described jetburner is formed on described baffle assembly and/or described clutch shaft bearing assembly, described jetburner is configured to be opened and closed by described first piston in the process of rotating at described first piston, and described injection valve is described first piston.
8. compressor according to claim 5, it is characterized in that, the injection channel that described baffle assembly and/or described clutch shaft bearing assembly are formed with described jetburner and are communicated with described jetburner, described injection valve comprises the valve member be arranged on described injection channel.
9. compressor according to claim 8, is characterized in that, described jetburner is configured to be opened and closed by described first piston in the process of rotating at described first piston further, and described injection valve comprises described first piston further.
10. the compressor according to any one of claim 1-9, it is characterized in that, described clutch shaft bearing assembly comprises clutch shaft bearing and cover plate, and described clutch shaft bearing is located between described first order compression assembly and described cover plate, limits described intermediate cavity between described clutch shaft bearing and described cover plate.
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| CN201510595500.9A CN105134595B (en) | 2015-09-17 | 2015-09-17 | Compressor |
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| CN106382227A (en) * | 2016-11-18 | 2017-02-08 | 广东美芝制冷设备有限公司 | Multi-stage compression type rotary compressor and refrigerating circulating device provided with same |
| CN107476978A (en) * | 2017-08-28 | 2017-12-15 | 广东美芝制冷设备有限公司 | Rotary compressor and there is its air-conditioning system |
| CN108626118A (en) * | 2018-05-25 | 2018-10-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and heat-exchange system with it |
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| CN105134595B (en) | 2017-06-16 |
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