CN211233426U

CN211233426U - Air conditioning system

Info

Publication number: CN211233426U
Application number: CN201922060830.4U
Authority: CN
Inventors: 魏会军; 李立民; 曹贞文; 郭求和; 刘虹志; 马亚鹏
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai; Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-08-11
Anticipated expiration: 2029-11-25

Abstract

The utility model provides an air conditioning system, which comprises a compressor, a condenser, an evaporator and a first throttling device, wherein a liquid spraying channel is arranged inside a static vortex disc of the compressor, and the liquid spraying channel sprays introduced liquid refrigerant into a compression cavity; the inside of the static scroll disk is also provided with an air injection channel which injects the introduced gaseous refrigerant into the compression cavity; the air conditioning system comprises an air injection pipeline, a first control valve is arranged on the air injection pipeline, and a temperature sensor is arranged on an exhaust pipeline of the compressor; the condenser is also connected to the liquid spraying channel of the compressor through a liquid spraying pipeline, and a fourth control valve is arranged on the liquid spraying pipeline. Through the utility model discloses can select to adopt jet-propelled cooling or hydrojet cooling to the operating condition of difference and difference, be suitable for the operating mode of multiple difference, promote compressor operating efficiency and reliability, increase the operation scope of compressor.

Description

Air conditioning system

Technical Field

The utility model belongs to the technical field of the compressor, concretely relates to air conditioning system.

Background

The scroll compressor has the advantages of simple structure, small volume, light weight, low noise, high mechanical efficiency, stable operation and the like. For the low-pressure cavity vortex compressor, in the use, when the operation condition is bad, the compressor works under the working condition of larger pressure ratio, the exhaust temperature of the compressor is higher, the viscosity of lubricating oil in the compressor is reduced by the higher exhaust temperature, the operation power consumption is increased, the performance of the compressor is reduced, and the reliability of the compressor is adversely affected. Especially, in winter operation, the compressor is always operated under a high pressure ratio, which may cause the performance and reliability of the compressor to be reduced.

In order to control the exhaust temperature during the operation of the compressor and improve the operation reliability of the compressor, a method of reducing the exhaust temperature of the compressor by providing a gas or liquid injection function on the compressor is generally adopted. However, when the operation condition is not severe enough, the liquid cannot be completely evaporated into gas by adopting the liquid spraying function, and the oil film is diluted by the liquid refrigerant, so that the internal abrasion of the compressor is caused, and the service life is reduced; when the operation condition is too severe, the effect of reducing the exhaust temperature by adopting the air injection function is not obvious, the viscosity of lubricating oil in the compressor is reduced, the lubrication and the sealing of the compressor are influenced, and the operation efficiency and the reliability are reduced.

Because compressor (especially scroll compressor) among the prior art only has single jet-propelled or hydrojet function, can't adapt to the operating conditions under the different running condition (for example can not be suitable for high load operating mode and low-load operating mode simultaneously), lead to technical problem such as compressor operating efficiency and reliability reduction, consequently the utility model discloses research designs an air conditioning system.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the present invention is to overcome the defect that the compressor (especially scroll compressor) in the prior art only has a single air injection or liquid injection function and cannot adapt to the working conditions under different operating conditions, thereby providing an air conditioning system.

The utility model provides an air conditioning system, include: the liquid spraying device comprises a compressor, a condenser, an evaporator and a first throttling device, wherein a liquid spraying channel is arranged in the fixed scroll, one end of the liquid spraying channel is positioned at the outer surface of the fixed scroll and can introduce liquid refrigerant outside the fixed scroll into the liquid spraying channel, and the other end of the liquid spraying channel extends to the inside of the fixed scroll and sprays the introduced liquid refrigerant into a compression cavity;

the inner part of the fixed scroll is also provided with an air injection channel, one end of the air injection channel is positioned at the outer surface of the fixed scroll and can introduce the gaseous refrigerant outside the fixed scroll into the air injection channel, and the other end of the air injection channel extends to the inner part of the fixed scroll and injects the introduced gaseous refrigerant into a compression cavity;

the air conditioning system comprises a main pipeline and a flash evaporator, wherein one end of the main pipeline is communicated with a low-pressure air suction end of the compressor, and the other end of the main pipeline is communicated to a liquid outlet end of the flash evaporator; the air conditioning system comprises an air injection pipeline, one end of the air injection pipeline is communicated with the air injection channel of the compressor, the other end of the air injection pipeline is communicated with the gas outlet end of the flash evaporator, a first control valve is arranged on the air injection pipeline, and a temperature sensor is arranged on the exhaust pipeline of the compressor; the condenser is also connected to the liquid spraying channel of the compressor through a liquid spraying pipeline, and a fourth control valve is arranged on the liquid spraying pipeline.

Preferably, the first and second electrodes are formed of a metal,

a first branch and a second branch which are connected in parallel are further arranged between the inlet of the flash evaporator and the condenser, a second control valve and a second throttling device are arranged on the first branch, and a third control valve is arranged on the second branch; and a throttle valve or a stepping valve is also arranged on the liquid spraying pipeline.

Preferably, the first and second electrodes are formed of a metal,

a third branch is further arranged between the inlet of the flash evaporator and the condenser, a fourth control valve and a third throttling device are arranged on the third branch, the third branch further comprises a fourth branch, one end of the fourth branch is connected with the condenser, the other end of the fourth branch is connected to the main pipeline and is positioned at the liquid outlet end of the flash evaporator, a fifth control valve is arranged on the fourth branch, and a sixth control valve is further arranged between the other end of the fourth branch and the liquid outlet end of the flash evaporator; and a throttle valve or a stepping valve is also arranged on the liquid spraying pipeline.

Preferably, the first and second electrodes are formed of a metal,

a first tangential plane is formed on the outer periphery of the fixed scroll, and one end of the liquid spraying channel is arranged at the first tangential plane and extends towards the inside of the fixed scroll;

a second tangential plane is further formed on the outer circumference of the fixed scroll, and one end of the gas injection channel is arranged at the second tangential plane and extends towards the inside of the fixed scroll;

and/or a first injection port is communicated with the other end of the liquid spraying channel, and liquid refrigerant is injected into the compression cavity through the first injection port; and/or a second injection port is communicated with the other end of the gas injection channel, and the gaseous refrigerant is injected into the compression cavity through the second injection port.

Preferably, the first and second electrodes are formed of a metal,

the number of the first tangent planes is at least one, and each first tangent plane is provided with at least one liquid spraying channel; and/or the number of the second tangent planes is at least one, and each second tangent plane is provided with at least one air injection channel; and/or the first tangent plane and the second tangent plane coincide together.

Preferably, the first and second electrodes are formed of a metal,

the first tangent plane is provided with the liquid spraying channel, the second tangent plane is provided with the air spraying channel; or, the first tangent plane is provided with one liquid spraying channel, the second tangent plane is provided with two air injection channels; or, the number of the first tangent planes is one, the liquid spraying channel is arranged on the first tangent planes, the number of the second tangent planes is two, and the air spraying channel is correspondingly arranged on each second tangent plane.

Preferably, the first and second electrodes are formed of a metal,

still include the adapter, the adapter for the shape of buckling structure, include with the first portion that first tangent plane meets and with the second portion that first portion buckles and connects, be provided with the hydrojet through-hole in the first portion the hydrojet through-hole extends to the inside of first portion, be provided with the first axial through-hole in the second portion, the first axial through-hole extends to the inside of second portion and with hydrojet through-hole intercommunication, the hydrojet through-hole can with on the quiet whirlpool dish hydrojet channel or jet-propelled passageway intercommunication.

Preferably, the first and second electrodes are formed of a metal,

still include the connecting rod, the one end of connecting rod is provided with second axial through-hole along its axial inside extension, the other end of connecting rod or the position that is close to the other end are provided with radial through-hole along radial direction, just radial through-hole with second axial through-hole intercommunication, just the connecting rod can insert the adapter in the first axial through-hole, make radial through-hole the second axial through-hole with first axial through-hole communicates in proper order.

Preferably, the first and second electrodes are formed of a metal,

when the compressor comprises a first tangent plane and a second tangent plane, the compressor also comprises a sealing gasket, wherein the sealing gasket can be arranged between the adapter and the first tangent plane, and the sealing gasket can also be arranged between the adapter and the second tangent plane; and/or, the compressor still includes the sealing washer, the sealing washer cover is established the periphery of connecting rod, and be located the adapter in the first axial through-hole.

Preferably, the first and second electrodes are formed of a metal,

the first tangent plane is also provided with at least one first screw hole; the second tangent plane is also provided with at least one second screw hole; when including first screw and second screw: the adapter is provided with a first through hole; the sealing gasket is further provided with a second through hole, the compressor further comprises a bolt or a screw, the bolt or the screw can simultaneously penetrate through the first screw hole, the first through hole and the second through hole, or simultaneously penetrate through the second screw hole, the first through hole and the second through hole, and the adapter and the sealing gasket are fixed to the fixed scroll disk.

Preferably, the first and second electrodes are formed of a metal,

the fixed scroll disc and the movable scroll disc are arranged in the upper shell, one end of the injection pipe is connected to the radial through hole of the connecting rod, the other end of the injection pipe penetrates through the outer part of the upper shell, and a third axial through hole is formed in the injection pipe; and the upper shell is provided with a liquid spray pipe through hole or an air injection pipe through hole which allows the spray pipe to pass through.

The utility model provides a pair of air conditioning system has following beneficial effect:

the liquid spraying channel arranged in the static vortex disc can guide liquid refrigerant to enter the static vortex disc from the outside of the static vortex disc and spray the liquid refrigerant to the compression cavity, so that liquid spraying cooling is carried out when the exhaust temperature of the compressor is overhigh; the gas refrigerant can be guided into the static scroll from the outside of the static scroll through the gas injection channel arranged in the static scroll and is injected into the compression cavity, so that the gas injection cooling is carried out when the exhaust temperature of the compressor is higher; the flash evaporator is adopted to flash refrigerant gas for cooling to perform gas injection, the condenser is directly connected to a compressor compression cavity through a liquid injection channel, and the condensed liquid refrigerant can be used for liquid injection to cool the exhaust gas of the compressor; the mode of jet-propelled or hydrojet can be selected to adopt during the different exhaust temperature that corresponds, can select to adopt jet-propelled cooling or hydrojet cooling to different running condition and different operating condition promptly, the operating mode application scope of compressor and air conditioning system has been increased effectively, exhaust temperature is higher when operating condition load is on the high side, adopt jet-propelled cooling in order to carry out exhaust cooling this moment, exhaust temperature is too high when operating condition load is too high, adopt hydrojet cooling in order to strengthen exhaust cooling effect this moment, thereby can be suitable for multiple different operating modes, can adjust compressor operation mode according to different operating condition, promote compressor operating efficiency and reliability, increase the operating range of compressor.

Drawings

Fig. 1 is a schematic view of the overall structure of a compressor according to a first embodiment of the present invention;

FIG. 1a is a partially enlarged structural view of a portion P in FIG. 1;

fig. 2 is a schematic structural view of a static scroll according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a static vortex disk enthalpy-increasing channel according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a housing according to an embodiment of the present invention;

fig. 5 is a schematic view of a liquid-spraying copper pipe structure according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a connecting rod according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a seal ring according to an embodiment of the present invention;

fig. 8 is a schematic view of a swivel structure according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of a sealing gasket according to an embodiment of the present invention;

fig. 10 is a schematic view of a screw structure according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a second fixed scroll according to an embodiment of the present invention;

fig. 12 is a schematic cross-sectional view of the enthalpy-increasing channel of the static scroll according to the second embodiment of the present invention;

fig. 13 is a schematic connection diagram of an air conditioning system according to a first embodiment of the present invention;

fig. 14 is a schematic connection diagram of an air conditioning system according to a second embodiment of the present invention.

The reference numbers in the figures denote:

1. an upper cover; 2. a partition plate; 3. a cross slip ring; 4. a support plate; 5. an upper housing; 501. a liquid spraying pipe through hole; 502. a jet pipe through hole; 6. a primary counterbalance; 7. an upper bracket; 8. a motor; 9. a motor fixing frame; 10. a main housing; 11. a lower support ring; 12. a lower cover; 13. a lower bracket; 14. a lower bearing; 15. an air suction port; 16. a crankshaft; 17. a rotor; 18. an eccentric sleeve; 19. a movable scroll pan; 20. a static scroll pan; 21. an injection pipe; 2101. a third axial through hole; 22. a connecting rod; 2201. a radial through hole; 2202. a second axial through hole; 2203. a seal ring groove; 23. a seal ring; 24. an adapter; 2401. a liquid spraying through hole; 2402. a first axial through hole; 2403. a first through hole; 25. sealing gaskets; 2501. a second liquid spraying through hole; 2502. a second through hole; 26. a sealing cover; 27. an exhaust pipe; 28. a check valve; 29. and (4) screws.

01. A compressor; 02. a temperature sensor; 03. a condenser; 04. a second throttling device; 05. a second control valve; 06. a third control valve; 07. a fourth control valve; 08. a throttle or stepper valve; 09. a flash evaporator; 010. a first throttling device; 011. a first control valve; 012. an evaporator; 004. a third throttling means; 005. a fifth control valve; 006. a sixth control valve; 013. a seventh control valve; A. a main pipeline; B. an air jet line; C. a liquid spray line; D. a first branch; E. a second branch circuit; F. a third branch; G. a fourth branch; 100. and an exhaust cavity.

2001. A first tangent plane; 2002. a second tangent plane; 2003. a liquid ejection channel; 2004. an air injection passage; 2005. a first injection port; 2006. a second injection port; 2007. a first screw hole; 2008. and a second screw hole.

Detailed Description

As shown in fig. 1 to 14, the present invention provides an air conditioning system, which comprises a compressor 01 (preferably, a scroll compressor), a condenser 03, an evaporator 012 and a first throttle device 010, wherein the compressor mainly comprises a motor 8, an upper bracket 7, a lower bracket 13, a static scroll disk 20, a dynamic scroll disk 19, an oldham ring 3, a crankshaft 16, etc. The motor 8 is fixed on the main shell 10 through a motor fixing frame 9, and the upper bracket 7 is fixed on the main shell 10 through interference fit and axial thrust. The movable scroll 19 and the fixed scroll 20 are oppositely arranged on the upper bracket 7 with a phase angle difference of 180 degrees, the movable scroll 19 moves under the driving of the crankshaft 16 and is engaged with the fixed scroll 20 to form a series of crescent closed cavities which are mutually isolated and continuously changed in volume. A sealing cover 26 is installed at the back of the fixed scroll 20, and the sealing cover 26 can axially float to form a sealed exhaust passage with the partition plate 2 during the operation of the compressor. It should be noted that the fixed scroll 20 has axial flexibility, i.e. can axially float, but in normal operation, the fixed scroll 20 is tightly pressed on the movable scroll 19 by the axial force of the gas in the middle pressure cavity formed by the sealing cover 26 and the back surface of the fixed scroll 20, the movable scroll 19 is tightly pressed on the supporting plate 4 on the upper bracket 7 due to the action of the high pressure gas in the compression cavity and the acting force of the fixed scroll 20, and the supporting plate 4 is fixed on the upper bracket 7 through screws. The partition plate 2 and the upper cover 1 are fixed to the main casing 10 by welding, and the partition plate 2 and the upper cover 1 form a high pressure exhaust chamber 100.

When the compressor runs, the motor 8 drives the crankshaft 16 to rotate, the crank section of the crankshaft 16 is provided with the eccentric sleeve 18 with radial flexibility, the eccentric sleeve 18 drives the movable scroll disk 19 to move, and the movable scroll disk 19 makes translational motion around the center of the crankshaft with a fixed radius under the limitation of autorotation prevention of the cross slip ring 3. Refrigerant entering from the outside of the compressor is sucked into a crescent suction chamber formed by the orbiting scroll 19 and the fixed scroll 20, and after being compressed, the refrigerant enters a high pressure chamber formed by the upper cover 1 and the partition plate 2 through the fixed scroll 20, the sealing cover 26 and the check valve 28, and is then discharged through the discharge pipe 27.

A liquid spray channel 2003 is provided inside the fixed scroll 20, one end of the liquid spray channel 2003 is located at an outer surface of the fixed scroll 20, and is capable of introducing a liquid refrigerant outside the fixed scroll 20 into the liquid spray channel 2003, and the other end of the liquid spray channel 2003 extends to the inside of the fixed scroll 20 and sprays the introduced liquid refrigerant into a compression chamber;

the inside of the fixed scroll 20 is further provided with a gas injection passage 2004, one end of the gas injection passage 2004 being located at an outer surface of the fixed scroll 20 and being capable of introducing a gaseous refrigerant outside the fixed scroll 20 into the gas injection passage 2004, and the other end of the gas injection passage 2004 extending to the inside of the fixed scroll 20 and injecting the introduced gaseous refrigerant into a compression chamber.

The air conditioning system comprises a main pipeline A and a flash evaporator 09, wherein one end of the main pipeline is communicated with a low-pressure suction end of the compressor 01, and the other end of the main pipeline is communicated to a liquid outlet end of the flash evaporator 09; the air conditioning system comprises an air injection pipeline B, one end of the air injection pipeline B is communicated with the air injection channel 2004 of the compressor 01, the other end of the air injection pipeline B is communicated to the air outlet end of the flash evaporator 09, a first control valve 011 is arranged on the air injection pipeline B, and a temperature sensor 02 is arranged on an air exhaust pipeline of the compressor; the condenser 03 is also connected to the liquid ejection passage 2003 of the compressor 01 through a liquid ejection line C on which a fourth control valve 07 is provided.

The liquid spraying channel arranged in the static vortex disc can guide liquid refrigerant to enter the static vortex disc from the outside of the static vortex disc and spray the liquid refrigerant to the compression cavity, so that liquid spraying cooling is carried out when the exhaust temperature of the compressor is overhigh; the gas refrigerant can be guided into the static scroll from the outside of the static scroll through the gas injection channel arranged in the static scroll and is injected into the compression cavity, so that the gas injection cooling is carried out when the exhaust temperature of the compressor is higher; the flash evaporator is adopted to flash refrigerant gas for cooling to perform gas injection, the condenser is directly connected to a compressor compression cavity through a liquid injection channel, and the condensed liquid refrigerant can be used for liquid injection to cool the exhaust gas of the compressor; the mode of jet-propelled or hydrojet can be selected to adopt during the different exhaust temperature that corresponds, can select to adopt jet-propelled cooling or hydrojet cooling to different running condition and different operating condition promptly, the operating mode application scope of compressor and air conditioning system has been increased effectively, exhaust temperature is higher when operating condition load is on the high side, adopt jet-propelled cooling in order to carry out exhaust cooling this moment, exhaust temperature is too high when operating condition load is too high, adopt hydrojet cooling in order to strengthen exhaust cooling effect this moment, thereby can be suitable for multiple different operating modes, can adjust compressor operation mode according to different operating condition, promote compressor operating efficiency and reliability, increase the operating range of compressor. The flash evaporator can effectively generate flash steam, and the liquid spraying channel arranged at the outlet end of the condenser can spray liquid refrigerant into the compressor medium-pressure cavity to realize liquid spraying cooling; liquid spraying or air jetting is carried out inside the compressor through the flash evaporator, the independent air jetting pipeline and the independent air jetting pipeline, and effective switching and control of the liquid spraying or the air jetting are achieved.

In the first embodiment, it is preferable that,

as shown in fig. 13, a first branch D and a second branch E connected in parallel are further disposed between the inlet of the flash evaporator 09 and the condenser 03, the first branch D is provided with a second control valve 05 and a second throttling device 04, and the second branch E is provided with a third control valve 06; and a throttle valve or a stepping valve 08 is also arranged on the liquid spraying pipeline C. This is the preferred structural style of embodiment one of the present invention, through the second control valve and the second throttling set and the third control valve that set up on two branches and two branches, make the branch road of controlling the second throttling set open in order to form gas to the refrigerant throttle during gas injection, control the branch road of the second throttling set to close in order not to throttle the refrigerant during hydrojet, make the liquid refrigerant get into in the flash evaporator, and then get into the first throttling set of the main pipeline, accomplish the refrigerant circulation of the main loop, the hydrojet process is still provided by the hydrojet pipeline, realize the hydrojet cooling; the flow rate of the liquid refrigerant flowing through the liquid spray line can be adjusted by a throttle or step valve 08.

As shown in fig. 13, the embodiment in combination with the system is: when the compressor runs, an air injection mode is preferentially adopted for running, namely, the third control valve 06 (preferably an electromagnetic valve) and the fourth control valve 07 (preferably an electromagnetic valve) are simultaneously closed, the second control valve 05 (preferably an electromagnetic valve) is opened, at the moment, the refrigerant condensed by the condenser 03 passes through the second control valve 05 and then is throttled by the second throttling device 04, the throttled refrigerant enters the flash evaporator 09, part of gaseous refrigerant flashed in the flash evaporator 09 passes through the first control valve 011 (preferably a stepping valve) and then is connected to the compressor injection pipe 21 and then is injected into a compressor medium-pressure cavity, and most of refrigerant passes through the first throttling device 010 and then enters the evaporator 012 and then returns to the compressor 01; when the working condition is bad, the exhaust temperature measured by the temperature sensor 02 cannot be controlled below a safety value (generally set at any value between 115 ℃ and 130 ℃) by an air injection mode, the third control valve 06 and the fourth control valve 07 are simultaneously opened, the second control valve 05 is closed, the first control valve 011 is closed, at the moment, most of the refrigerant returns to the compressor 01 after passing through the third control valve 06, the flash evaporator 09, the first throttling device 010 and the evaporator 012, and part of the liquid refrigerant is injected into a compressor medium-pressure cavity to further reduce the exhaust temperature after passing through the fourth control valve 07, the throttling valve or the stepping valve 08.

In the second embodiment, it is preferable that,

as shown in fig. 14, a third branch F is further disposed between the inlet of the flash evaporator 09 and the condenser 03, the third branch F is provided with a fifth control valve 005 and a third throttling device 004, the third branch F further includes a fourth branch G, one end of the fourth branch G is connected to the condenser 03, the other end of the fourth branch G is connected to the main pipeline a at a position of the liquid outlet end of the flash evaporator 09, the fourth branch G is provided with a sixth control valve 006, and a seventh control valve 013 is further disposed between the other end of the fourth branch G and the liquid outlet end of the flash evaporator 09; and a throttle valve or a stepping valve 08 is also arranged on the liquid spraying pipeline C.

This is the preferred structural style of embodiment two of the utility model, can make the branch road of controlling the third throttling set open in order to form gas to the refrigerant throttle during jet-propelled through setting up the third branch road, control the branch road of second throttling set and close in order not to the refrigerant throttle during the hydrojet, make liquid refrigerant pass through the fourth branch road and not get into the flash vessel, directly reach and get into first throttling set in the main line, accomplish the refrigerant circulation of main loop, the hydrojet is still provided by hydrojet pipeline C, realize the hydrojet cooling; the flow rate of the liquid refrigerant flowing through the liquid spray line can be adjusted by a throttle or step valve 08.

As shown in fig. 14, the present invention can also extend the pipeline after the sixth control valve 006 (preferably, solenoid valve) to the front of the first throttling device 010, at this time: when the system is in normal air injection operation, the fifth control valve 005 and the seventh control valve 013 (preferably electromagnetic valves) are simultaneously opened, the sixth control valve 006 and the fourth control valve 07 are simultaneously closed, the refrigerant condensed by the condenser 03 passes through the fifth control valve 005 and then is throttled by the third throttling device 004, the throttled refrigerant enters the flash evaporator 09, part of gaseous refrigerant flashed in the flash evaporator 09 passes through the first control valve 011 (preferably a stepping valve) and then is connected to the compressor injection pipe 21 and then is injected into the compressor medium pressure cavity, and most of refrigerant passes through the seventh control valve 013 and the first throttling device 010 and then enters the evaporator 012 and then returns to the compressor 01; when the working condition is bad, the exhaust temperature measured by the temperature sensor 02 cannot be controlled below a safety value (generally set at any value between 115 ℃ and 130 ℃) by an air injection mode, the sixth control valve 006 and the fourth control valve 07 are simultaneously opened, the fifth control valve 005 and the seventh control valve 013 are simultaneously closed, the first control valve 011 is closed, at this time, most of the refrigerant returns to the compressor 01 after passing through the sixth control valve 006, the first throttling device 010 and the evaporator 012, and part of the liquid refrigerant is injected into a compressor medium pressure cavity after passing through the fourth control valve 07, the throttling valve or the stepping valve 08 so as to further reduce the exhaust temperature.

Preferably, the first and second electrodes are formed of a metal,

a first tangential plane 2001 is formed on an outer circumference of the fixed scroll 20, and one end of the liquid ejecting channel 2003 is disposed at the first tangential plane 2001 and extends toward the inside of the fixed scroll 20;

a second tangential plane 2002 is further formed on the outer circumference of the fixed scroll 20, and one end of the gas injection passage 2004 is disposed at the second tangential plane 2002 and extends toward the inside of the fixed scroll 20;

and/or a first injection port 2005 is communicated with the other end of the liquid spraying channel, and liquid refrigerant is injected into the compression cavity through the first injection port; and/or a second injection port 2006 is communicated with the other end of the gas injection channel, and gaseous refrigerant is injected into the compression cavity through the second injection port.

The first tangent plane and the second tangent plane can be used for effectively processing the liquid spraying channel and the gas injection channel, the liquid refrigerant introduced by the liquid spraying channel can be injected into the compression cavity through the first injection port, and the gas refrigerant introduced by the gas injection channel can be injected into the compression cavity through the second injection port.

Preferably, the first and second electrodes are formed of a metal,

the number of the first tangential planes 2001 is at least one, and at least one liquid spraying channel 2003 is arranged on each first tangential plane 2001; and/or the second tangential plane 2002 is at least one, and each second tangential plane 2002 is provided with at least one air injection channel 2004; and/or the first tangent plane 2001 and the second tangent plane 2002 coincide (example two, see fig. 11 and 12). This is the utility model discloses a preferred structural style of first tangent plane and second tangent plane, can set up one or more hydrojet or jet-propelled passageway on the tangent plane through setting up at least one tangent plane to effectively increase hydrojet or jet-propelled hydrojet volume or jet-propelled volume of spouting, improved the effect and the effect that reduce exhaust temperature effectively.

Preferably, the first and second electrodes are formed of a metal,

the first tangent plane 2001 is provided with the liquid spraying channel 2003, and the second tangent plane 2002 is provided with the gas spraying channel 2004; alternatively, one first tangential plane 2001 is provided with one liquid spraying channel 2003, and one second tangential plane 2002 is provided with two gas spraying channels 2004 (embodiment one, see fig. 2 and 3); alternatively, there is one first tangent plane 2001 on which one liquid spraying channel 2003 is disposed, there are two second tangent planes 2002 on which one gas spraying channel 2004 is correspondingly disposed. The liquid spraying device is a preferable structure form of several different embodiments of the invention, and the cooling effect on the exhaust gas in the compressor can be realized by the form that at least one liquid spraying channel and/or at least one air spraying channel are arranged on one tangent plane.

Referring to fig. 8, preferably,

still include adapter 24, adapter 24 for the bending structure, include with the first portion that first tangent plane 2001 meets and with the second portion that first portion is buckled and is connected, be provided with hydrojet through-hole 2401 in the first portion hydrojet through-hole 2401 extends to the inside of first portion, be provided with first axial through-hole 2402 in the second portion, first axial through-hole 2402 extends to the inside of second portion and with hydrojet through-hole 2401 communicates, hydrojet through-hole 2401 can with on the static vortex dish 20 hydrojet channel 2003 or jet-propelled passageway 2004 communicates. The liquid spraying channel or the gas spraying channel arranged on the static scroll disk can be effectively communicated through the adapter and is jointed with the first tangent plane or the second tangent plane, so that conditions are provided for supplementing a liquid refrigerant or a gas refrigerant with lower temperature into the liquid spraying channel or the gas spraying channel to exhaust and reduce the temperature; the design of the bending structure enables the pipeline to be convenient to walk and lead the refrigerant into the shell from the outside of the shell through the pipeline, and then the refrigerant enters the inside of the static vortex disk.

Referring to fig. 6, preferably,

the adapter further comprises a connecting rod 22, a second axial through hole 2202 is formed in one end of the connecting rod 22 in an axially extending mode, a radial through hole 2201 is formed in the other end of the connecting rod 22 or a position close to the other end of the connecting rod 22 in the radial direction, the radial through hole 2201 is communicated with the second axial through hole 2202, and the connecting rod 22 can be inserted into the first axial through hole 2402 of the adapter 24, so that the radial through hole 2201, the second axial through hole 2202 and the first axial through hole 2402 are communicated in sequence. One end of the connecting rod is communicated with the adapter, and the other end of the connecting rod is communicated with a pipeline which is arranged in a penetrating way of the shell, so that the function of conducting the refrigerant into the static vortex disc is achieved.

Preferably, the first and second electrodes are formed of a metal,

when the first tangential plane 2001 and the second tangential plane 2002 are included, the compressor further comprises a sealing gasket 25, the sealing gasket 25 can be disposed between the adapter 24 and the first tangential plane 2001, and the sealing gasket 25 can also be disposed between the adapter 24 and the second tangential plane 2002; and/or, the compressor still includes sealing washer 23, sealing washer 23 cover is established the periphery of connecting rod 22, and be located adapter 24 in the first axial through hole 2402. Can improve the leakproofness between adapter and the quiet whirlpool dish through seal gasket, can improve the leakproofness between the inside and the connecting rod periphery of adapter through the sealing washer.

Preferably, the first and second electrodes are formed of a metal,

the first tangential plane 2001 is further provided with at least one first screw hole 2007; the second tangential plane 2002 is further provided with at least one second screw hole 2008; a first through hole 2403 is formed in the adapter 24; the sealing gasket 25 is further provided with a second through hole 2502, the compressor further comprises a bolt or a screw 29, and the bolt or the screw can simultaneously pass through the first screw hole, the first through hole 2403 and the second through hole, or simultaneously pass through the second screw hole, the first through hole 2403 and the second through hole, so that the adapter 24 and the sealing gasket 25 are fixed on the fixed scroll plate 20. Through the first screw hole, the second screw hole and the first through hole, the second through hole that set up respectively at above-mentioned position, can wear to establish it, firmly fix adapter and seal gasket to the static vortex dish through bolt or screw.

Preferably, the first and second electrodes are formed of a metal,

the device further comprises an upper shell 5 and an injection pipe 21, wherein the fixed scroll 20 and the movable scroll 19 are arranged in the upper shell 5, one end of the injection pipe 21 is connected to the radial through hole 2201 of the connecting rod 22, the other end of the injection pipe penetrates out of the upper shell 5, and a third axial through hole 2101 is formed in the injection pipe 21; the upper case 5 is provided with a liquid ejecting pipe through hole 501 or a gas ejecting pipe through hole 502 that allows the ejection pipe 21 to pass therethrough. The liquid spraying pipe can be communicated with the outside of the shell, and the shell is communicated with the connecting rod, so that the refrigerant is effectively guided into the shell from the outside and then enters the static scroll.

As shown in fig. 2, a first tangential plane 2001 and a second tangential plane 2002 are formed on the fixed scroll 20, a first screw hole 2007 and a liquid spraying channel 2003 are dug on the first tangential plane 2001, and a second screw hole 2008 and a gas spraying channel 2004 are dug on the second tangential plane 2002; as shown in fig. 3, the upper housing 5 is provided with a liquid spraying pipe through hole 501; as shown in FIG. 4, a third axial through hole 2101 is formed in the injection pipe 21; as shown in fig. 5, the connecting rod 22 is provided with a radial through hole 2201 and a second axial through hole 2202, and the side wall of the upper end is provided with a sealing ring groove 2203; as shown in fig. 6, the sealing ring is circular and can be embedded into the sealing ring groove 2203 of the connecting rod 22 to seal the connecting rod 22 and the adapter 24; as shown in fig. 7, the adapter 24 is provided with a liquid spraying through hole 2401, the liquid spraying through hole 2401 is communicated with the first axial through hole 2402, and the adapter 24 is provided with two first through holes 2403; as shown in fig. 8, the gasket 25 has a second liquid spraying hole 2501 and a second through hole 2502.

During assembly, one end of the injection pipe 21 is inserted into the radial through hole 2201 on the connecting rod 22 and then brazed with the radial through hole 2201 on the connecting rod, the other end of the injection pipe passes through the liquid injection pipe through hole 501 on the upper shell and then is communicated with a liquid injection pipeline of the system, and the injection pipe 21 and the upper shell 5 are fixed together through brazing; the other end of the connecting rod is inserted into the first axial through hole 2402 on the adapter 24 after the sealing ring 23 (capable of realizing sealing and axial relative movement) is embedded into the sealing ring groove 2203; the fixed scroll 20, the sealing gasket 25 and the adapter 24 are fixed together by a screw 29. At this time, the liquid or gas sprayed by the system can be sprayed into the intermediate pressure cavity of the compressor through the third axial through hole 2101, the radial through hole 2201, the second axial through hole 2202, the first axial through hole 2402 and the liquid spraying through hole 2401.

Referring to fig. 10, the stationary plate is provided with two different tangential planes (a first tangential plane 2001 and a second tangential plane 2002, each of which is vertically provided with a set of threaded holes for fixing the adapter 24. the side opening of the stationary plate includes a liquid ejecting channel 2003, an air ejecting channel 2004, an exhaust hole and a medium pressure hole, wherein the exhaust hole and the medium pressure hole penetrate through the entire stationary plate, the liquid ejecting channel 2003 and the air ejecting channel 2004 are respectively communicated with the first ejection opening 2005 and the second ejection opening 2006. the first enthalpy increasing channel (i.e., the liquid ejecting channel 2003) is provided on the first tangential plane 2001, the second enthalpy increasing channel (i.e., the air ejecting channel 2004) is provided on the second tangential plane 2002, and the air ejecting and the liquid ejecting are respectively operated through different pipelines, so at least two groups of enthalpy increasing pipelines penetrate through the compressor housing to be connected with the stationary plate.

Example two

The utility model discloses can also set up jet-propelled and hydrojet channel on same tangential plane through thickening quiet set of base plate thickness. As shown in fig. 11 and 12, the stationary plate is provided with a first cut plane 2001, two sets of threaded holes are respectively provided at different horizontal positions of the cut plane for fixing the adapter 24, and the opening positions of the two adapter passages are respectively directed in the upper and lower directions. As shown in fig. 12, which is a schematic cross-sectional view of an enthalpy-increasing channel of the fixed scroll according to this embodiment, a first enthalpy-increasing channel (liquid spraying channel 2003) and a second enthalpy-increasing channel (gas spraying channel 2004) are formed in the fixed scroll. Under the condition that the back structures of the static discs do not interfere with each other, the positions of the air injection channels and the liquid injection channels are respectively positioned on different horizontal positions of the tangent plane, and the air injection channels and the liquid injection channels respectively work through different pipelines, so that at least two groups of enthalpy-increasing pipelines penetrate through the shell of the compressor to be connected with the static discs. The open-close state of the enthalpy-increasing pipeline is different under different working conditions, so that the exhaust temperature of the compressor is suppressed.

The utility model also provides an air conditioning system's control method, it uses the preceding arbitrary air conditioning system, according to compressor exhaust temperature's height and select control gas injection pipeline B to open still control liquid injection pipeline C opens. Through the utility model discloses an air conditioning system's control method can adopt jet-propelled cooling or hydrojet cooling to different operating condition and different operating condition option control, the operating mode application scope of compressor and air conditioning system has been increased effectively, exhaust temperature is higher when operating condition load is on the high side, adopt jet-propelled cooling in order to carry out exhaust cooling this moment, exhaust temperature is too high when operating condition load is too high, adopt the hydrojet cooling in order to strengthen exhaust cooling effect this moment, thereby can be suitable for the operating mode of multiple difference, can adjust compressor operation mode according to different operating condition, promote compressor operating efficiency and reliability, the operation scope of increase compressor.

Preferably, the first and second electrodes are formed of a metal,

when the exhaust temperature is detected to be lower than a safety range, controlling the first control valve 011 on the gas injection pipeline B to be opened and controlling the fourth control valve 07 on the liquid injection pipeline C to be closed; when the exhaust temperature is detected to be higher than a safety range, the first control valve 011 on the gas injection pipeline B is controlled to be closed, and the fourth control valve 07 on the liquid injection pipeline C is controlled to be opened. Liquid spraying or gas spraying can be carried out on the interior of the compressor through the flash evaporator, the independent gas spraying pipeline and the gas spraying pipeline by opening the first control valve, and liquid refrigerant can be sprayed into a medium-pressure cavity of the compressor by opening the outlet end of the condenser of the second control valve, so that liquid spraying cooling is realized; thereby realizing the effective switching and control of the effective liquid spraying or air spraying.

Preferably, the first and second electrodes are formed of a metal,

when still including first branch road D and second branch road E, just be provided with second control valve 05 on the first branch road D, be provided with third control valve 06 on the second branch road E:

when the exhaust temperature is detected to be lower than a safety range, controlling to open the second control valve 05 and close the third control valve 06; when the exhaust temperature is detected to be higher than the safety range, the third control valve 06 is controlled to be opened, and the second control valve 05 is controlled to be closed. This is the utility model discloses embodiment one's preferred control mode, second control valve and second throttling arrangement and third control valve through setting up on two branches and two branches for control second throttling arrangement's branch road is opened in order to form gas to the refrigerant throttle during jet-propelled, control second throttling arrangement's branch road is closed in order not to throttle the refrigerant during the hydrojet, make liquid refrigerant get into in the flash vessel, and then get into the first throttling arrangement of main line, accomplish the refrigerant circulation of main loop, the hydrojet process is still provided by the hydrojet pipeline, realize the hydrojet cooling.

Preferably, the first and second electrodes are formed of a metal,

when a third branch F and a fourth branch G are further included, and a fifth control valve 005 and a third throttling device 004 are provided on the third branch F, a sixth control valve 006 is provided on the fourth branch G, and a seventh control valve 013 is further provided between the other end of the fourth branch G and the liquid outlet end of the flash evaporator 09:

when it is detected that the exhaust gas temperature is lower than a safety range, controlling to open the fifth control valve 005 and open the seventh control valve 013, and closing the sixth control valve 006; when it is detected that the exhaust gas temperature is higher than a safety range, the sixth control valve 006 is controlled to be opened, the fifth control valve 005 is closed, and the seventh control valve 013 is controlled to be closed.

This is the utility model discloses embodiment two's preferred control mode, can make the branch road of control third throttling arrangement open in order to form gas to the refrigerant throttle when spouting through setting up the third branch road, during the hydrojet control second throttling arrangement's branch road is closed in order not to throttle the refrigerant, make liquid refrigerant pass through the fourth branch road and do not get into the flash vessel, directly reach and get into first throttling arrangement in the main line, accomplish the refrigerant circulation of main loop, the hydrojet is still provided by hydrojet pipeline C, realize the hydrojet cooling.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An air conditioning system comprising: compressor (01), condenser (03), evaporimeter (012) and first throttling arrangement (010), its characterized in that: a liquid spraying channel (2003) is arranged inside a fixed scroll (20) of the compressor, one end of the liquid spraying channel (2003) is positioned at the outer surface of the fixed scroll (20) and can guide liquid refrigerant outside the fixed scroll (20) into the liquid spraying channel (2003), and the other end of the liquid spraying channel (2003) extends to the inside of the fixed scroll (20) and sprays the guided liquid refrigerant into a compression cavity;

the inside of the fixed scroll (20) is further provided with a gas injection passage (2004), one end of the gas injection passage (2004) is located at the outer surface of the fixed scroll (20) and is capable of introducing a gaseous refrigerant outside the fixed scroll (20) into the gas injection passage (2004), and the other end of the gas injection passage (2004) extends to the inside of the fixed scroll (20) and injects the introduced gaseous refrigerant into a compression chamber;

the air conditioning system comprises a main pipeline (A) and a flash evaporator (09), wherein one end of the main pipeline is communicated with a low-pressure air suction end of the compressor (01), and the other end of the main pipeline is communicated to a liquid outlet end of the flash evaporator (09); the air conditioning system comprises an air injection pipeline (B), one end of the air injection pipeline (B) is communicated with the air injection channel (2004) of the compressor (01), the other end of the air injection pipeline (B) is communicated to the air outlet end of the flash evaporator (09), a first control valve (011) is arranged on the air injection pipeline (B), and a temperature sensor (02) is arranged on the air exhaust pipeline of the compressor; the condenser (03) is also connected to the liquid spray channel (2003) of the compressor (01) by a liquid spray line (C) on which a fourth control valve (07) is arranged.

2. The air conditioning system of claim 1, wherein:

a first branch (D) and a second branch (E) which are connected in parallel are further arranged between the inlet of the flash evaporator (09) and the condenser (03), a second control valve (05) and a second throttling device (04) are arranged on the first branch (D), and a third control valve (06) is arranged on the second branch (E); and a throttle valve or a stepping valve (08) is also arranged on the liquid spraying pipeline (C).

3. The air conditioning system of claim 1, wherein:

a third branch (F) is further arranged between an inlet of the flash evaporator (09) and the condenser (03), a fifth control valve (005) and a third throttling device (004) are arranged on the third branch (F), the evaporator further comprises a fourth branch (G), one end of the fourth branch (G) is connected with the condenser (03), the other end of the fourth branch (G) is connected to the position, located at the liquid outlet end of the flash evaporator (09), of the main pipeline (A), a sixth control valve (006) is arranged on the fourth branch (G), and a seventh control valve (013) is further arranged between the other end of the fourth branch (G) and the liquid outlet end of the flash evaporator (09); and a throttle valve or a stepping valve (08) is also arranged on the liquid spraying pipeline (C).

4. The air conditioning system according to any one of claims 1 to 3, characterized in that:

a first tangential plane (2001) is formed on an outer circumference of the fixed scroll (20), and one end of the liquid ejecting channel (2003) is disposed at the first tangential plane (2001) and extends toward an inside of the fixed scroll (20);

a second tangential plane (2002) is further formed on the outer circumference of the fixed scroll (20), and one end of the gas injection passage (2004) is disposed at the second tangential plane (2002) and extends toward the inside of the fixed scroll (20);

and/or a first injection port (2005) is communicated with the other end of the liquid spraying channel, and liquid refrigerant is injected into the compression cavity through the first injection port; and/or a second injection port (2006) is communicated with the other end of the gas injection channel, and the gaseous refrigerant is injected into the compression cavity through the second injection port.

5. The air conditioning system of claim 4, wherein:

the number of the first tangent planes (2001) is at least one, and at least one liquid spraying channel (2003) is arranged on each first tangent plane (2001); and/or said second tangential plane (2002) is at least one, each said second tangential plane (2002) is provided with at least one said air injection channel (2004); and/or said first tangent plane (2001) and said second tangent plane (2002) coincide.

6. The air conditioning system of claim 5, wherein:

the first tangent plane (2001) is provided with the liquid spraying channel (2003), the second tangent plane (2002) is provided with the gas spraying channel (2004); or, the first tangent plane (2001) is provided with one liquid spraying channel (2003), the second tangent plane (2002) is provided with two gas spraying channels (2004); or, the number of the first tangent planes (2001) is one, the liquid spraying channel (2003) is arranged on the first tangent planes, the number of the second tangent planes (2002) is two, and each second tangent plane (2002) is correspondingly provided with one gas spraying channel (2004).

7. The air conditioning system of claim 4, wherein:

still include adapter (24), adapter (24) for the bending type structure, include with the first portion that first tangent plane (2001) met and with the second portion that the first portion is buckled and is connected, be provided with hydrojet through-hole (2401) in the first portion hydrojet through-hole (2401) extend to the inside of first portion, be provided with first axial through-hole (2402) in the second portion, first axial through-hole (2402) extend to the inside of second portion and with hydrojet through-hole (2401) intercommunication, hydrojet through-hole (2401) can with on static vortex dish (20) hydrojet channel (2003) or jet-propelled passageway (2004) intercommunication.

8. The air conditioning system of claim 7, wherein:

still include connecting rod (22), the one end of connecting rod (22) is provided with second axial through-hole (2202) along its axial inside extension, the other end of connecting rod (22) or the position that is close to the other end are provided with radial through-hole (2201) along radial direction, just radial through-hole (2201) with second axial through-hole (2202) intercommunication, just connecting rod (22) can insert in first axial through-hole (2402) of adapter (24), make radial through-hole (2201), second axial through-hole (2202) and first axial through-hole (2402) communicate in proper order.

9. The air conditioning system of claim 8, wherein:

when a first tangential plane (2001) and a second tangential plane (2002) are included, the compressor further comprises a sealing gasket (25), the sealing gasket (25) can be arranged between the adapter (24) and the first tangential plane (2001), and the sealing gasket (25) can also be arranged between the adapter (24) and the second tangential plane (2002); and/or, the compressor still includes sealing washer (23), sealing washer (23) cover is established the periphery of connecting rod (22) and be located adapter (24) in first axial through hole (2402).

10. The air conditioning system of claim 9, wherein:

the first tangent plane (2001) is also provided with at least one first screw hole (2007); the second tangent plane (2002) is also provided with at least one second screw hole (2008); a first through hole (2403) is formed in the adapter (24); still be provided with second through-hole (2502) on sealing gasket (25), the compressor still includes bolt or screw (29), bolt or screw can pass simultaneously first screw, first through-hole (2403) and the second through-hole, or pass simultaneously second screw, first through-hole (2403) and the second through-hole, and will adapter (24) with sealing gasket (25) are fixed to on the static vortex dish (20).

11. The air conditioning system according to any one of claims 8 to 10, characterized in that:

the compressor further comprises an upper shell (5) and an injection pipe (21), the static scroll (20) and a movable scroll (19) of the compressor are arranged in the upper shell (5), one end of the injection pipe (21) is connected to the radial through hole (2201) of the connecting rod (22), the other end of the injection pipe penetrates through the outer portion of the upper shell (5), and a third axial through hole (2101) is formed in the injection pipe (21); the upper shell (5) is provided with a liquid spray pipe through hole (501) or an air injection pipe through hole (502) allowing the injection pipe (21) to pass through.