CN209557242U - A kind of double-stage compressor and air-conditioning system - Google Patents

Abstract

The utility model relates to a kind of double-stage compressor and air-conditioning systems, and the pump assembly including housing unit and in the housing unit forms inner cavity between the housing unit and the pump assembly；The pump assembly includes first-stage cylinder；The first-stage cylinder is equipped with level-one exhaust passage, and the level-one exhaust passage is connected to the inner cavity.By the way that the level-one exhaust passage is connected to the inner cavity, it realizes using the inner cavity of the housing unit as the intermediate cavity for accepting first-stage cylinder exhaust, relative to the intermediate cavity being set in the pump assembly, the volume of intermediate cavity becomes larger, the sharply raising of intermediate cavity pressure is avoided, extraordinary noise caused by being detached from so as to avoid slide plate in first-stage cylinder and roller；The compression efficiency of compressor is not only increased, while improving the service life of compressor.

Description

A kind of double-stage compressor and air-conditioning system

Technical field

The utility model relates to field of home appliance technology more particularly to a kind of double-stage compressor and air-conditioning systems.

Background technique

With the continuous improvement of quality of life, people require the comfort of life higher and higher.As improvement air matter The electric appliance of amount, people are increasingly dependent on and be unable to do without air-conditioning.With the development of air-conditioning technical, performance is become better and better.As sky The compressor for adjusting core component, is also evolving, split-compressor is just replaced step by step with its excellent compression performance in recent years For traditional stage compressor.But in twin-stage rotor-type compressor, the medium pressure gas after level-one cylinder compression will be by setting It can enter secondary cylinder in the intermediate cavity rear of pump body further to be compressed, since level-one exhaust exists with second level air-breathing The medium pressure gas of phase difference, the discharge of level-one cylinder can not be sucked in time by secondary cylinder, and intermediate cavity pressure is caused sharply to increase, It will appear disengaging between slide plate and roller in first-stage cylinder and generate extraordinary noise；Such case not only influences the compressibility of compressor Can, and will cause certain influence to the service life of compressor.

Accordingly, it is desirable to provide a kind of double-stage compressor and air-conditioning system solve the deficiencies in the prior art.

Utility model content

In order to solve the problems in the prior art, the utility model provides a kind of double-stage compressor and air-conditioning system.

A kind of double-stage compressor, the pump assembly including housing unit and in the housing unit, the shell group Inner cavity is formed between part and the pump assembly；The pump assembly includes first-stage cylinder；The first-stage cylinder is equipped with level-one exhaust passage, The level-one exhaust passage is connected to the inner cavity.

Further, the pump assembly further includes secondary cylinder, and the secondary cylinder is equipped with second level air entry, and the second level is inhaled Port is connected to the inner cavity.

Further, the pump assembly further includes first flange, the first sealing plate and middle pressure exhaust passage；Described first Flange and the first sealing plate form the first chamber, and first chamber is connected to the level-one exhaust passage；Medium pressure exhaust passage It is connected to first chamber and the inner cavity.

Further, medium pressure exhaust passage includes first passage and second channel；The first passage is through described The bottom of first flange, the second channel are set in the side wall of the first-stage cylinder；One end of the second channel and the inner cavity It is connected, the other end is connected to the first passage.

Further, the second channel includes horizontal channel and Vertical Channel, one end of the horizontal channel with it is described One end of Vertical Channel is connected to；The other end of the horizontal channel is connected to the inner cavity, the other end of the Vertical Channel with The first passage connection.

Further, the pump assembly further includes second flange, the second sealing plate and high pressure gas channel；Described second Flange and second sealing plate form the second chamber；The high pressure gas channel is connected to second chamber and the housing unit Exhaust outlet；The secondary cylinder is equipped with secondary exhaust channel, and the secondary exhaust channel is connected to second chamber.

Further, the second flange is equipped with the third channel through its side wall, in the third channel and the shell Be equipped in the exhaust outlet of body component through both exhaust pipe, the outer wall of the exhaust pipe inner wall with the third channel respectively It is seamlessly connected with the inner wall of the exhaust outlet；The high pressure gas channel is formed in the exhaust pipe.

Further, second level slide plate and second level roller are equipped in the secondary cylinder, the second level slide plate and the second level are rolled It is sub hinged.

Further, it is equipped with secondary work chamber in the secondary cylinder, is equipped with and the second level in the side wall of the secondary cylinder The second level slide plate chamber of working chamber connection, the second level slide plate is intracavitary to be equipped with the slidable second level slide plate, the second level slide plate One end be equipped with cylindrical articulated joint, the second level roller is equipped with and the matched hinge hole of the articulated joint, the articulated joint In the hinge hole.

Further, the hinge hole is cylindrical, and the hinge hole runs through the second level roller, the second level rolling vertically The outer wall of son is equipped with the opening of the hinge hole.

Further, Seal Oil is equipped between the second level slide plate chamber and the second level slide plate.

Further, level-one working chamber is equipped in the first-stage cylinder, the level-one exhaust passage is set to the first-stage cylinder It inner wall and is connected to the level-one working chamber；The first flange is equipped with the lower inlet channel being connected to first chamber；It is described Level-one exhaust passage is connected to the lower inlet channel.

Further, the secondary exhaust channel is set to the inner wall of the secondary cylinder and is connected to the secondary work chamber, The second flange is equipped with the upper air channel being connected to second chamber；The secondary exhaust channel and the upper air channel Connection.

Further, the housing unit includes shell, upper cover and lower cover；The shell is equipped with and is connected to the inner cavity Exhaust outlet；The first-stage cylinder is equipped with level-one air entry, and the shell is equipped with the low pressure being connected to the level-one air entry and inhales Port.

It further, further include the gas-liquid separator；The outlet of the gas-liquid separator and the low pressure suction port connect It is logical.

Further, the pump assembly further includes partition；The partition be set to the first-stage cylinder and the secondary cylinder it Between.

It further, further include motor；The pump assembly further includes the crankshaft connecting with the motor driven；Described one Level-one roller is equipped in grade cylinder, the crankshaft is drivingly connected with the level-one roller and the second level roller respectively.

Further, the outer wall of the motor is connected to medium pressure exhaust passage by the inner cavity.

Further, the motor, second sealing plate, the second flange, the secondary cylinder, the first-stage cylinder, The first flange and first sealing plate are set gradually along the axial direction of the housing unit；The side wall packet of the second flange At least one sequentially connected arcwall and at least one planar wall are included, the arcwall and the planar wall are arranged alternately, institute It states arcwall and is bonded and is fixedly connected with the side wall of the housing unit, shape between the planar wall and the side wall of the housing unit At communicating passage；The communicating passage is axial parallel with the housing unit.

Based on same invention thinking, the utility model additionally provides a kind of air-conditioning system, and the air-conditioning system includes described Double-stage compressor.

The technical solution of the utility model has the advantages that compared with the immediate prior art

The double-stage compressor that technical solution provided by the utility model provides, by by the level-one exhaust passage with it is described Inner cavity connection, realizes using the inner cavity of the housing unit as the intermediate cavity for accepting first-stage cylinder exhaust, relative to being set to The intermediate cavity in pump assembly is stated, the volume of intermediate cavity becomes larger, the sharply raising of intermediate cavity pressure is avoided, so as to avoid Extraordinary noise caused by slide plate and roller are detached from first-stage cylinder；The compression efficiency of compressor is not only increased, while improving pressure The service life of contracting machine.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of double-stage compressor provided by the utility model；

Fig. 2 is the pump assembly structural schematic diagram of double-stage compressor provided by the utility model；

Fig. 3 is the top view of first-stage cylinder provided by the utility model；

Fig. 4 is the top view of first flange provided by the utility model；

Fig. 5 is the cross-sectional view of first flange provided by the utility model；

Fig. 6 is the top view of secondary cylinder provided by the utility model；

Fig. 7 is the connection schematic diagram of lower roller provided by the utility model and lower slide plate；

Fig. 8 is the top view of second flange provided by the utility model；

Fig. 9 is the cross-sectional view of second flange provided by the utility model；

Figure 10 is the top view of top cover labyrinth provided by the utility model.

Wherein, 1- gas-liquid separator；2- shell；3- upper cover；4- motor；5- pump assembly；6- lower cover；7- crankshaft；8- Two sealing plates；9- second flange；10- secondary cylinder；11- partition；12- first-stage cylinder；13- first flange；The first sealing plate of 14-；15- Second chamber；The first chamber of 16-；Exhaust passage is pressed in 17-；18- third channel；19- second level air entry；20- level-one air entry；21- Second level roller；22- level-one roller；23- second channel；24- level-one working chamber；25- level-one exhaust passage；26- first passage； 27- level-one slide plate chamber；28- articulated joint；29- secondary exhaust channel；30- second level slide plate chamber；31- secondary work chamber；32- second level is sliding Piece；33- high pressure gas channel；34- arcwall；35- planar wall.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model Apply example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all Belong to the range of the utility model protection.

As shown in Figures 1 to 10, the utility model provides a kind of double-stage compressor, and the double-stage compressor includes shell Component and the pump assembly 5 in the housing unit, form inner cavity between the housing unit and the pump assembly 5；Institute Stating pump assembly 5 includes first-stage cylinder 12；The first-stage cylinder 12 is equipped with level-one exhaust passage 25, the level-one exhaust passage 25 and institute State inner cavity connection.

It is connected to, is realized using the inner cavity as keeping in described one with the inner cavity of housing unit by level-one exhaust passage 25 The intermediate cavity that grade cylinder 12 is vented, relative to the intermediate cavity being set in the pump assembly 5, the volume of intermediate cavity becomes larger, avoids The sharply raising of intermediate cavity pressure, extraordinary noise caused by being detached from so as to avoid slide plate in first-stage cylinder 12 and roller；No The compression efficiency of compressor is improved only, while improving the service life of compressor.

In some embodiments of the utility model, the pump assembly 5 further includes secondary cylinder 10, and the secondary cylinder 10 is set There is second level air entry 19, the second level air entry 19 is connected to the inner cavity.

Gas after the compression of first-stage cylinder 12 is drained into described by level-one exhaust passage 25 in communication with the inner cavity Inner cavity, the compressed gas of first-stage cylinder 12 are medium pressure gas, and medium pressure gas will also pass through the further compression of secondary cylinder 10 Second level air entry 19 as high pressure gas, therefore the secondary cylinder 10 is connected to the inner cavity, is facilitated and is absorbed medium pressure gas Body enables compressor to smoothly complete Two-stage Compression.

In some embodiments of the utility model, the pump assembly 5 further includes first flange 13, the first sealing plate 14 With middle pressure exhaust passage 17；The first flange 13 and the first sealing plate 14 form the first chamber 16, first chamber 16 and described Level-one exhaust passage 25 is connected to；Medium pressure exhaust passage 17 is connected to first chamber 16 and the inner cavity.

The needs of level-one exhaust passage 25 are connected to the inner cavity to be exhausted, and level-one exhaust passage more than 25 is located at one In the side wall of the level-one working chamber 24 of grade cylinder 12, the level-one exhaust passage 25 is connected to first chamber 16, is then passed through The middle pressure exhaust passage 17 for being connected to the first chamber 16 and the inner cavity realizes the level-one exhaust passage 25 with the inner cavity Connection.

In some embodiments of the utility model, medium pressure exhaust passage 17 includes first passage 26 and second channel 23；The first passage 26 runs through the bottom of the first flange 13, and the second channel 23 is set to the side wall of the first-stage cylinder 12 It is interior；One end of the second channel 23 is connected with the inner cavity, and the other end is connected to the first passage 26.

In some embodiments of the utility model, the second channel 23 includes horizontal channel and Vertical Channel, described One end of horizontal channel is connected to one end of the Vertical Channel；The other end of the horizontal channel is connected to the inner cavity, institute The other end for stating Vertical Channel is connected to the first passage 26.

Medium pressure exhaust passage 17 is connected to the inner cavity and first chamber 16, therefore medium pressure exhaust passage 17 passes through The baffle between first chamber 16 and the inner cavity is worn, such as first sealing plate 14 can be run through, may also extend through described The side wall of first flange 13；Bottom and the level-one of the middle pressure exhaust passage 17 described in the present embodiment through the first flange 13 The side wall of cylinder 12, and it is set as right-angled bend shape, being designed in this way can be such that the medium pressure gas in first chamber 16 slowly passes through Medium pressure exhaust passage 17, speed is uniform and stable, be unlikely to because air pressure float caused by gas flow rate mutation.

In some embodiments of the utility model, the pump assembly 5 further includes second flange 9,8 and of the second sealing plate High pressure gas channel 33；The second flange 9 and second sealing plate 8 form the second chamber 15；The high pressure gas channel 33 It is connected to the exhaust outlet of second chamber 15 and the housing unit；The secondary cylinder 10 be equipped with secondary exhaust channel 29, described two Grade exhaust passage 29 is connected to second chamber 15.

Most of compressor, which passes through, will compress the high pressure gas discharge completed to described interior intracavitary, then by shell group Exhaust outlet on part is exhausted；But the inner cavity is vented and secondary cylinder air-breathing as the first-stage cylinder in the application Intermediate cavity, therefore cannot remake discharge chamber use, and the compressed high pressure gas of secondary cylinder have to by exhaust outlet into Row discharge, therefore the secondary exhaust channel 29 is connected to second chamber 15, then again by being connected to second chamber 15 Being connected to for the secondary exhaust channel 29 and the exhaust outlet is realized with the high pressure gas channel 33 of the exhaust outlet.

In some embodiments of the utility model, the second flange 9 is equipped with the third channel 18 through its side wall, institute It states and is equipped with the exhaust pipe through the two in the interior exhaust outlet with the housing unit of third channel 18, the outer wall of the exhaust pipe divides It is not seamlessly connected with the inner wall of the inner wall of the third channel 18 and the exhaust outlet；The high pressure is formed in the exhaust pipe Gas channel 33.

The high pressure gas channel 33 is connected to the exhaust outlet of second chamber 15 and the compressor, makes second chamber 15 The high pressure gas that interior compression is completed is drained into outside compressor by exhaust outlet, between the baffle between second chamber 15 and the inner cavity Equipped with third channel 18, the third channel 18 can through second sealing plate 8, can run through the second flange 9 bottom；This The third channel 18 is set to the side wall of the second flange 9 in embodiment, and the third channel 18 is set to and institute The contour position of exhaust outlet is stated, and 9 side wall of the second flange is bonded with the side wall of the housing unit, the third channel 18 The coaxial and same diameter with the exhaust outlet is equipped with the exhaust pipe through the two in the third channel 18 and the exhaust outlet, by In being high pressure gas in second chamber 15, gas easily occurs between the exhaust pipe and the third channel 18 and the exhaust outlet The leakage of body, it is therefore desirable to will be between the inner wall of the inner wall and the exhaust outlet of the outer wall of the exhaust pipe and the third channel 18 Realize seamless connection, specific connection type can be equipped with buffering apron in the third channel 18 and the exhaust outlet, then will The exhaust pipe is set in the buffering apron, and the buffering apron and the exhaust pipe in it are interference fitted, the buffering It is also interference fit between 18 inner wall of cushion rubber and the exhaust outlet inner wall outside it and the third channel.Above-mentioned design can make described High pressure gas in two chambers 15 is drained into except the compressor by the high pressure gas channel 33 in the exhaust pipe, can either be high Effect exhaust, and the mutual leakage of gas will not be generated.

In some embodiments of the utility model, it is equipped with second level slide plate 32 and second level roller 21 in the secondary cylinder 10, The second level slide plate 32 and the second level roller 21 are hinged.

In some embodiments of the utility model, secondary work chamber 31, the secondary cylinder are equipped in the secondary cylinder 10 The second level slide plate chamber 30 being connected to the secondary work chamber 31 is equipped in 10 side wall, being equipped in the second level slide plate chamber 30 can slide Dynamic second level slide plate 32, one end of the second level slide plate 32 are equipped with cylindrical articulated joint 28, the second level roller 21 be equipped with The matched hinge hole of the articulated joint 28, the articulated joint 28 are set in the hinge hole.

In some embodiments of the utility model, the hinge hole it is cylindrical, the hinge hole runs through institute vertically Second level roller 21 is stated, the outer wall of the second level roller 21 is equipped with the opening of the hinge hole.

In some embodiments of the utility model, sealing is equipped between the second level slide plate chamber 30 and the second level slide plate 32 Oil.

The pressure in existing intermediate cavity mentioned in background technique often sharply increases, and will lead to the cunning in first-stage cylinder 12 Piece and roller disengaging lead to extraordinary noise, simultaneously because pressure difference is smaller in secondary cylinder 10, deposits after the pressure ratio distribution of double-stage compressor It falls off in slide plate and roller, leads to the problem of noise.Therefore by the secondary cylinder 10 slide plate and roller carry out hinged, i.e. institute It states second level slide plate 32 and the second level roller 21 is hinged, the specific settable articulation piece of articulated manner, two contact pin of articulation piece It is connect respectively with the second level roller 21 and the second level slide plate 32, then passes through the relative rotation between two contact pin of articulation piece Realize that the second level roller 21 and the second level slide plate 32 are hinged.But based on the principle for using part less as far as possible, do not add as far as possible Add remaining part.Therefore one end of the second level slide plate 32 is designed to the shape of articulated joint 28, that is, above-mentioned vertical It is cylindric, vertical cylindrical hinge hole is then equipped in the side wall of the second level roller 21, and the hinge hole is vertical Through the second level roller 21, facilitate the installation of the articulated joint 28；The hinge hole is equipped with opening, and the opening is set to described On the side wall of second level roller 21, the second level slide plate 32 is equipped with the company with the opening cooperation close to the position of the articulated joint 28 Neck is connect, the rear second level slide plate 32 is installed and is only relatively rotated with the second level roller 21, but cannot be mutually disengaged, also Extraordinary noise will not be generated；When the second level roller 21 is with 7 eccentric rotary of crankshaft, the direction of the second level slide plate 32 becomes therewith It is dynamic, and the internal diameter of the second level slide plate chamber 30 is greater than the diameter of the second level slide plate 32, facilitates the second level slide plate 32 in it Shaking, to prevent gap between the second level slide plate 32 and the second level slide plate chamber 30 from the leakage of gas occurs, therefore two Seal Oil is set between person.

In some embodiments of the utility model, level-one working chamber 24, the level-one row are equipped in the first-stage cylinder 12 Gas channel 25 is set to the inner wall of the first-stage cylinder 12 and is connected to the level-one working chamber 24；The first flange 13 is equipped with and institute State the lower inlet channel of the first chamber 16 connection；The level-one exhaust passage 25 is connected to the lower inlet channel.The first-stage cylinder Level-one working chamber 24, and the inner wall level-one slide plate chamber 27 with outward extension of the level-one working chamber 24 are again provided in 12, It is equipped with level-one slide plate in the level-one slide plate chamber 27, these are all the very mature skills that technical staff knows about in compressor field Art does not do excessive description here.

The level-one exhaust passage 25 is connected to the level-one working chamber 24 and first chamber 16 with the lower inlet channel, The compressed medium pressure gas of first-stage cylinder 12 can enter the first chamber 16 by this channel, and be equipped in the lower inlet channel The opening and closing of lower inlet valve, the lower inlet valve is related with the pressure in the level-one working chamber 24, when the level-one working chamber 24 Interior gas compression is completed, and after pressure rise, the lower inlet valve is opened, and medium pressure gas enters the first chamber 16, under described later Intake valve is closed, and the first-stage cylinder 12 continues to compress.

In some embodiments of the utility model, the secondary exhaust channel 29 be set to secondary cylinder 10 inner wall and with institute The connection of secondary work chamber 31 is stated, the second flange 9 is equipped with the upper air channel being connected to second chamber 15；The second level row Gas channel 29 is connected to the upper air channel.

The secondary exhaust channel 29 is connected to the secondary work chamber 31 and second chamber 15 with the upper air channel, The compressed high pressure gas of secondary cylinder 10 can enter the second chamber 15 by this channel, and be equipped in the upper air channel The opening and closing of upper inlet valve, the upper inlet valve is related with the pressure in the secondary work chamber 31, when the secondary work chamber 31 Interior gas compression is completed, and after pressure rise, the upper inlet valve is opened, and high pressure gas enters the second chamber 15, it is described later on Intake valve is closed, and the secondary cylinder 10 continues to compress.

In some embodiments of the utility model, the housing unit includes shell 2, upper cover 3 and lower cover 6；The shell Body 2 is equipped with the exhaust outlet；Level-one air entry 20 is equipped in the first-stage cylinder 12, the shell 2 is equipped with and the level-one The low pressure suction port that air entry 20 is connected to.

It further include the gas-liquid separator 1 in some embodiments of the utility model；The gas-liquid separator 1 goes out Mouth is connected to the low pressure suction port.

In some embodiments of the utility model, the pump assembly 5 further includes partition 11；The partition 11 is set to institute It states between first-stage cylinder 12 and the secondary cylinder 10.

In some embodiments of the utility model, the double-stage compressor further includes the motor in the shell 2 4；The pump assembly 5 further includes the crankshaft 7 being drivingly connected with the motor 4；The crankshaft 7 respectively with the first-stage cylinder 12 The roller of roller and the secondary cylinder 10 is drivingly connected.

In some embodiments of the utility model, the outer wall and medium pressure exhaust passage 17 of the motor 4 pass through institute State inner cavity connection.

Front has described most of compressors using the inner cavity as high pressure gas chamber, and the secondary cylinder 10 is compressed High pressure gas afterwards drains into the inner cavity, is then discharged by the exhaust outlet, and high pressure gas is temporary in the inner cavity It can cool down during depositing for motor 4, heat dissipation is realized in discharge process, but it is general by compressed high pressure gas twice Body is all higher, therefore its effect for cooling down and radiating for motor 4 is extremely limited, and using the inner cavity as centre in the application Chamber, for keeping in the compressed medium pressure gas of the first-stage cylinder 12, medium pressure gas compare it is lower with the temperature of high pressure gas, Therefore its effect for cooling down and radiating for motor 4 greatly enhances, and is conducive to the safety and stabilization of 4 long-play of motor, compresses The operational safety and stabilization of machine entirety also further increase；But motor 4 is by the necessary condition that medium pressure gas cools down and radiates The outer wall of motor 4 must be contacted with medium pressure gas, and the pump assembly 5 must be deposited between the side wall of the housing unit There is channel, so that the medium pressure gas of the level-one exhaust passage 25 discharge also can while capable of being full of 5 surrounding of pump assembly Around motor 4.

In some embodiments of the utility model, the motor 4, second sealing plate 8, the second flange 9, institute Secondary cylinder 12, the first-stage cylinder 10, the first flange 13 and first sealing plate 14 are stated along the axial direction of the housing unit It sets gradually；The side wall of the second flange 9 includes at least one sequentially connected arcwall 34 and at least one planar wall 35, The arcwall 34 and the planar wall 35 are arranged alternately, and the arcwall 34 is bonded and fixes with the side wall of the housing unit Connection, forms communicating passage between the planar wall 35 and the side wall of the housing unit；The communicating passage and the shell group The axial direction of part is parallel.

Setting position of the component and motor 4 of above-mentioned all pump assemblies 5 in the housing unit is conducive to press The normal operation of the two-stage compression of contracting machine, and can guarantee the continuity of two stages of compression；The second flange 9 and the shell group The side wall of part, which is fixedly connected, belongs to common connection type, but this connection type will lead to medium pressure gas can not be with the electricity Machine 4 is contacted, it is therefore desirable to communicating passage be arranged between second flange 9 and the side wall of the housing unit, to press in guarantee Gas is full of around the motor 4 by communicating passage, so that the purpose of motor 4 cooling and heat dissipation is reached for, in order to even Circulation passage is arranged simple and convenient.The side wall of the second flange 9 includes at least one sequentially connected arcwall 34 and at least One planar wall 35, the arcwall 34 and the planar wall 35 are arranged alternately, and the setting of above-mentioned side wall is by circular It is arranged what multiple sections were realized on side wall；It is described flat after the arcwall 34 is fixedly connected with the side wall of the housing unit Face the wall and meditate 35 and the housing unit side wall between naturally form communicating passage, be the company of completing while second flange 9 are installed The setting of circulation passage, it is time saving and energy saving, it settles at one go.The other modes that equally can be realized communicating passage also may be selected, such as It is arranged in the circular side wall of the second flange 9 and the axial parallel groove of the housing unit, the groove and the shell Communicating passage is formed between the side wall of component.

The compression process of split-compressor provided by the utility model is as follows:

The low-pressure gas of the outlet discharge of the gas-liquid separator 1 enters the level-one by the level-one air entry 20 In the level-one working chamber 24 of cylinder 12, the rotation of the level-one roller 22 cooperates the level-one slide plate, will be in level-one working chamber 24 Low-pressure gas is compressed, and after being compressed to medium pressure gas, the lower inlet valve is opened, and medium pressure gas enters described first In chamber 16, the lower inlet valve is closed later, the medium pressure gas in first chamber 16 by medium pressure exhaust passage 17 into Enter into the inner cavity, repeatedly compression exhaust several times, medium pressure gas is full of in the inner cavity in the housing unit, then institute It states second level air entry 19 and sucks medium pressure gas from the inner cavity, and compressed in the secondary work chamber 31, compressed Cheng Hou, the upper inlet valve are opened, and the high pressure gas enters in second chamber 15, and then high pressure gas passes through the height Pressure exhaust passage 33 drains into except the compressor, completes the gas compression of twin-stage.

Based on same invention thinking, the utility model additionally provides a kind of air-conditioning system, and the air-conditioning system includes described Double-stage compressor.

It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it Between there are any actual relationship or orders.

Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc. With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution The spirit and scope of scheme.

Claims (20)

1. a kind of double-stage compressor, which is characterized in that the pump assembly including housing unit and in the housing unit (5), inner cavity is formed between the housing unit and the pump assembly (5)；The pump assembly (5) includes first-stage cylinder (12)；Institute First-stage cylinder (12) are stated equipped with level-one exhaust passage (25), the level-one exhaust passage (25) is connected to the inner cavity.

2. a kind of double-stage compressor according to claim 1, which is characterized in that the pump assembly (5) further includes second level Cylinder (10), the secondary cylinder (10) are equipped with second level air entry (19), and the second level air entry (19) is connected to the inner cavity.

3. a kind of double-stage compressor according to claim 2, which is characterized in that the pump assembly (5) further includes first Flange (13), the first sealing plate (14) and middle pressure exhaust passage (17)；The first flange (13) and the first sealing plate (14) group At the first chamber (16), first chamber (16) is connected to the level-one exhaust passage (25)；Medium pressure exhaust passage (17) is even Lead to first chamber (16) and the inner cavity.

4. a kind of double-stage compressor according to claim 3, which is characterized in that medium pressure exhaust passage (17) includes the One channel (26) and second channel (23)；The first passage (26) runs through the bottom of the first flange (13), and described second is logical Road (23) is set in the side wall of the first-stage cylinder (12)；One end of the second channel (23) is connected with the inner cavity, another One end is connected to the first passage (26).

5. a kind of double-stage compressor according to claim 4, which is characterized in that the second channel (23) includes horizontal logical Road and Vertical Channel, one end of the horizontal channel are connected to one end of the Vertical Channel；The other end of the horizontal channel It is connected to the inner cavity, the other end of the Vertical Channel is connected to the first passage (26).

6. a kind of double-stage compressor according to claim 3, which is characterized in that the pump assembly (5) further includes second Flange (9), the second sealing plate (8) and high pressure gas channel (33)；The second flange (9) and second sealing plate (8) group At the second chamber (15)；The high pressure gas channel (33) is connected to the exhaust outlet of the second chamber (15) and the housing unit；Institute Secondary cylinder (10) are stated equipped with secondary exhaust channel (29), the secondary exhaust channel (29) is connected to second chamber (15).

7. a kind of double-stage compressor according to claim 6, which is characterized in that the second flange (9), which is equipped with, runs through it The third channel (18) of side wall, the interior interior row equipped with through the two of exhaust outlet with the housing unit of the third channel (18) Tracheae, the outer wall of the exhaust pipe are seamlessly connected with the inner wall of the inner wall of the third channel (18) and the exhaust outlet respectively； The high pressure gas channel (33) is formed in the exhaust pipe.

8. a kind of double-stage compressor according to claim 6, which is characterized in that it is sliding to be equipped with second level in the secondary cylinder (10) Piece (32) and second level roller (21), the second level slide plate (32) and the second level roller (21) are hinged.

9. a kind of double-stage compressor according to claim 8, which is characterized in that be equipped with second level work in the secondary cylinder (10) Make chamber (31), the second level slide plate chamber (30) being connected to the secondary work chamber (31) be equipped in the side wall of the secondary cylinder (10), The slidable second level slide plate (32) is equipped in the second level slide plate chamber (30), one end of the second level slide plate (32) is equipped with circle Cylindrical articulated joint (28), the second level roller (21) are equipped with and the articulated joint (28) matched hinge hole, the articulated joint (28) it is set in the hinge hole.

10. a kind of double-stage compressor according to claim 9, which is characterized in that the hinge hole is cylindrical, the hinge It connects hole and runs through the second level roller (21) vertically, the outer wall of the second level roller (21) is equipped with the opening of the hinge hole.

11. a kind of double-stage compressor according to claim 9, which is characterized in that the second level slide plate chamber (30) with it is described Seal Oil is equipped between second level slide plate (32).

12. a kind of double-stage compressor according to claim 3, which is characterized in that be equipped with level-one in the first-stage cylinder (12) Working chamber (24), the level-one exhaust passage (25) be set to the first-stage cylinder (12) inner wall and with the level-one working chamber (24) Connection；The first flange (13) is equipped with the lower inlet channel being connected to first chamber (16)；The level-one exhaust passage (25) it is connected to the lower inlet channel.

13. a kind of double-stage compressor according to claim 9, which is characterized in that the secondary exhaust channel (29) is set to It the inner wall of the secondary cylinder (10) and is connected to the secondary work chamber (31), the second flange (9) is equipped with and described second The upper air channel of chamber (15) connection；The secondary exhaust channel (29) is connected to the upper air channel.

14. a kind of double-stage compressor according to claim 1, which is characterized in that the housing unit include shell (2), Upper cover (3) and lower cover (6)；The shell (2) is equipped with exhaust outlet in communication with the inner cavity；The first-stage cylinder (12) is equipped with one Grade air entry (20), the shell (2) are equipped with the low pressure suction port being connected to the level-one air entry (20).

15. a kind of double-stage compressor according to claim 14, which is characterized in that further include gas-liquid separator (1)；It is described The outlet of gas-liquid separator (1) is connected to the low pressure suction port.

16. a kind of double-stage compressor according to claim 2, which is characterized in that the pump assembly (5) further includes partition (11)；The partition (11) is set between the first-stage cylinder (12) and the secondary cylinder (10).

17. a kind of double-stage compressor according to claim 8, which is characterized in that further include motor (4)；The pump housing group Part (5) further includes the crankshaft (7) being drivingly connected with the motor (4)；Level-one roller (22) are equipped in the first-stage cylinder (12), institute Crankshaft (7) is stated to be drivingly connected with the level-one roller (22) and the second level roller (21) respectively.

18. a kind of double-stage compressor according to claim 17, which is characterized in that the outer wall of the motor (4) with it is described Middle pressure exhaust passage (17) is connected to by the inner cavity.

19. a kind of double-stage compressor according to claim 18, which is characterized in that the motor (4), second sealing Plate (8), the second flange (9), the secondary cylinder (10), the first-stage cylinder (12), the first flange (13) and described One sealing plate (14) is set gradually along the axial direction of the housing unit；The side wall of the second flange (9) includes sequentially connected At least one arcwall (34) and at least one planar wall (35), the arcwall (34) and the planar wall (35) are alternately set It sets, the arcwall (34) is bonded and is fixedly connected with the side wall of the housing unit, the planar wall (35) and the shell Communicating passage is formed between the side wall of component；The communicating passage is axial parallel with the housing unit.

20. a kind of air-conditioning system, which is characterized in that the air-conditioning system includes the described in any item twin-stages of claim 1 to 19 Compressor.