CN111102190B - Compressor, air conditioning system and control method - Google Patents
Compressor, air conditioning system and control method Download PDFInfo
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- CN111102190B CN111102190B CN201911167423.1A CN201911167423A CN111102190B CN 111102190 B CN111102190 B CN 111102190B CN 201911167423 A CN201911167423 A CN 201911167423A CN 111102190 B CN111102190 B CN 111102190B
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000004378 air conditioning Methods 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 201
- 238000005507 spraying Methods 0.000 claims abstract description 123
- 239000003507 refrigerant Substances 0.000 claims abstract description 92
- 239000007921 spray Substances 0.000 claims abstract description 29
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 36
- 238000001704 evaporation Methods 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 abstract description 41
- 239000007924 injection Substances 0.000 description 62
- 238000002347 injection Methods 0.000 description 62
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 13
- 229910052802 copper Inorganic materials 0.000 description 13
- 239000010949 copper Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 10
- 230000002829 reductive effect Effects 0.000 description 7
- 230000003068 static effect Effects 0.000 description 7
- 238000005192 partition Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/005—Axial sealings for working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/087—Joints with radial fluid passages
- F16L27/093—Joints with radial fluid passages of the "banjo" type, i.e. pivoting right-angle couplings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Abstract
The invention provides a compressor, an air conditioning system and a control method, wherein the compressor comprises a fixed scroll and an movable scroll, 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, the other end of the liquid spraying channel extends to the inner part of the fixed scroll, and the introduced liquid refrigerant or gaseous refrigerant can be sprayed into a compression cavity. The invention can select to adopt jet cooling or spray liquid cooling according to different operating conditions and different operating conditions, is applicable to various different operating conditions, improves the operating efficiency and reliability of the compressor, and increases the operating range of the compressor.
Description
Technical Field
The invention belongs to the technical field of compressors, and particularly relates to a compressor, an air conditioning system and a control method.
Background
The vortex 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 scroll compressor, in the use, when the operation working condition is abominable, when the compressor works under the working condition of a large pressure ratio, the exhaust temperature of the compressor can be higher, the viscosity of lubricating oil in the compressor can be reduced by the high exhaust temperature, and further the operation power consumption is increased, so that the performance of the compressor is reduced, and meanwhile, the reliability of the compressor is adversely affected. Particularly, when the compressor is operated in winter, the compressor is always operated at a high pressure ratio, which may cause a decrease in performance and reliability of the compressor.
In order to control the exhaust temperature during the operation of the compressor and improve the operation reliability of the compressor, a method of setting a jet or spray function on the compressor to reduce the exhaust temperature of the compressor is generally adopted. However, when the operation condition is not severe enough, the liquid can not be completely evaporated into gas by adopting the liquid spraying function, and the liquid refrigerant dilutes an oil film, 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 the lubricating oil in the compressor is reduced, the lubrication and the sealing of the compressor are affected, and the operation efficiency and the reliability are reduced.
Because the compressor (particularly the scroll compressor) in the prior art only has a single air injection or liquid injection function, and cannot adapt to working conditions under different running conditions (for example, cannot simultaneously adapt to a high-load working condition and a low-load working condition), the running efficiency and the reliability of the compressor are reduced, and the like, the invention designs an air injection liquid injection compressor and an air conditioning system.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the compressor (particularly the scroll compressor) in the prior art only has a single air injection or liquid spraying function and cannot adapt to the working conditions under different running conditions, so as to provide the compressor, the air conditioning system and the control method.
The present invention provides a compressor, comprising:
the liquid spraying device comprises a fixed vortex disc and an orbiting vortex disc, wherein a liquid spraying channel is arranged in the fixed vortex disc, one end of the liquid spraying channel is positioned at the outer surface of the fixed vortex disc and can guide liquid refrigerant and/or gaseous refrigerant outside the fixed vortex disc into the liquid spraying channel, and the other end of the liquid spraying channel extends to the inner part of the fixed vortex disc and sprays the guided liquid refrigerant and/or gaseous refrigerant into a compression cavity.
Preferably, the method comprises the steps of,
a first tangential plane is formed on the 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;
and/or a first jet orifice is also communicated with the other end of the liquid spraying channel, and liquid-state refrigerant and/or gaseous-state refrigerant are/is jetted into the compression cavity through the first jet orifice.
Preferably, the method comprises the steps of,
the first tangential planes are at least one, and at least one liquid spraying channel is arranged on each first tangential plane.
Preferably, the method comprises the steps of,
the liquid spraying device comprises a fixed scroll plate, and is characterized by further comprising an adapter, wherein the adapter is of a bent structure and comprises a first part connected with a first tangential plane and a second part connected with the first part in a bent mode, a liquid spraying through hole is formed in the first part and extends to the inside of the first part, a first axial through hole is formed in the second part and extends to the inside of the second part and is communicated with the liquid spraying through hole, and the liquid spraying through hole can be communicated with a liquid spraying channel on the fixed scroll plate.
Preferably, the method comprises the steps of,
the connecting rod is characterized by further comprising a connecting rod, wherein a second axial through hole is formed in one end of the connecting rod along the axial direction of the connecting rod in an inner extending manner, a radial through hole is formed in the other end of the connecting rod or a position close to the other end of the connecting rod along the radial direction, the radial through hole is communicated with the second axial through hole, and the connecting rod can be inserted into the first axial through hole of the adapter, so that the radial through hole, the second axial through hole and the first axial through hole are sequentially communicated.
Preferably, the method comprises the steps of,
when a first tangential plane is included, the compressor further includes a sealing gasket that is positionable between the adapter and the first tangential plane; and/or, the compressor further comprises a sealing ring, wherein the sealing ring is sleeved on the periphery of the connecting rod and is positioned in the first axial through hole of the adapter.
Preferably, the method comprises the steps of,
at least one first screw hole is also formed in the first tangential plane; the adapter is provided with a first through hole; the sealing gasket is further provided with a second through hole, and the compressor further comprises a bolt or a screw, wherein the bolt or the screw can penetrate through the first screw hole, the first through hole and the second through hole at the same time, so that the adapter and the sealing gasket are fixed on the fixed scroll.
Preferably, the method comprises the steps of,
the device also comprises an upper shell and a liquid spraying pipe, wherein the fixed vortex disc and the movable vortex disc are arranged in the upper shell, one end of the liquid spraying pipe is connected to the radial through hole of the connecting rod, the other end of the liquid spraying pipe penetrates out of the upper shell, and a third axial through hole is formed in the liquid spraying pipe; the upper shell is provided with a spray pipe through hole which allows the spray pipe to pass through.
The present invention also provides an air conditioning system, comprising: a condenser, an evaporator and a first throttling device comprising a compressor according to any of the preceding claims.
Preferably, the method comprises the steps of,
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 an outlet end of the flash evaporator; the air conditioning system comprises a liquid spraying pipeline, one end of the liquid spraying pipeline is communicated with the liquid spraying channel of the compressor, the other end of the liquid spraying pipeline is communicated with the other outlet end of the flash evaporator, and a temperature sensor is arranged on an exhaust pipeline of the compressor; the first throttling device is arranged on the main pipeline, and the liquid spraying pipeline is provided with a first control valve.
Preferably, the method comprises the steps of,
the flash evaporator is characterized in that a first branch and a second branch which are connected in parallel are further arranged between an inlet of the flash evaporator and the condenser, a second control valve is arranged on the first branch, a third control valve is arranged on the second branch, and a second throttling device is further arranged on the second branch.
Preferably, the method comprises the steps of,
a third throttling device is also arranged between the inlet of the flash evaporator and the condenser.
Preferably, the method comprises the steps of,
the evaporator is characterized in that a first branch and a second branch which are connected in parallel are further arranged between an inlet of the flash evaporator and the condenser, a fourth throttling device is arranged on the first branch, a fifth throttling device is further arranged on the second branch, and the pressure adjusting range of the fourth throttling device is larger than that of the fifth throttling device.
The invention also provides a control method of the air conditioning system, which uses the air conditioning system of any one of the preceding claims to selectively control the pressure of the flash evaporator according to the exhaust temperature of the compressor to control whether the flash evaporator is flash evaporated or not and control whether the liquid spraying pipeline is opened or not.
Preferably, the method comprises the steps of,
when the flash evaporator is further included, when a first control valve is arranged on the liquid spraying pipeline:
when the exhaust temperature is detected to be higher than a safety range, the flash evaporator is controlled not to flash, and the first control valve is controlled to be opened; and when the exhaust temperature is detected to be lower than a safety range, controlling the flash evaporator to flash, and controlling the first control valve to be opened.
Preferably, the method comprises the steps of,
when still including first branch road and second branch road, just be provided with the second control valve on the first branch road, be provided with third control valve and second throttling arrangement on the second branch road:
When the exhaust temperature is detected to be higher than a safety range, controlling to open the second control valve and closing the third control valve; and when the exhaust temperature is detected to be lower than a safety range, controlling to open the third control valve and closing the second control valve.
Preferably, the method comprises the steps of,
when the third throttling means is further included:
when the exhaust temperature is detected to be higher than a safety range, controlling the third throttling device to work throttling under a higher pressure adjusting range; and when the exhaust temperature is detected to be lower than a safety range, controlling the third throttling device to work throttling under a lower pressure adjusting range.
Preferably, the method comprises the steps of,
when still including first branch road and second branch road, just be provided with fourth throttling arrangement on the first branch road, be provided with fifth throttling arrangement on the second branch road, just the pressure regulation scope of fourth throttling arrangement is greater than the pressure regulation scope of fifth throttling arrangement:
when the exhaust temperature is detected to be higher than a safety range, controlling to open the fourth throttling device and closing the fifth throttling device; and when the exhaust temperature is detected to be lower than a safety range, controlling to open the fifth throttling device and closing the fourth throttling device.
The compressor, the air conditioning system and the control method provided by the invention have the following beneficial effects:
according to the invention, the liquid spraying channel is arranged in the fixed scroll, so that liquid refrigerant and/or gaseous refrigerant can be led into the fixed scroll from the outside of the fixed scroll and sprayed into the compression cavity, and liquid spraying cooling is performed when the exhaust temperature of the compressor is particularly high; the air injection cooling is carried out when the exhaust temperature of the compressor is higher, the air injection or liquid injection mode can be adopted when the exhaust temperature of the corresponding different exhaust temperatures is higher, namely, the air injection cooling or liquid injection cooling can be adopted according to different operation conditions and different operation working conditions, the working condition application range of the compressor and an air conditioning system is effectively enlarged, when the working condition load is higher, the exhaust temperature is higher, the air injection cooling is adopted at the moment to carry out the exhaust cooling, and when the working condition load is higher, the exhaust temperature is higher, the liquid injection cooling is adopted at the moment to enhance the exhaust cooling effect, so that the air injection cooling device can be suitable for various different working conditions, the operation mode of the compressor can be adjusted according to different operation working conditions, the operation efficiency and the reliability of the compressor are improved, and the operation range of the compressor is enlarged.
Drawings
FIG. 1 is a schematic diagram of a compressor according to a first embodiment of the present invention;
FIG. 1a is an enlarged partial view of the portion P of FIG. 1;
FIG. 2 is a schematic view of a structure of a fixed scroll of the present invention;
FIG. 3 is a schematic view of a housing structure according to the present invention;
FIG. 4 is a schematic view of a spray copper tube structure according to the present invention;
FIG. 5 is a schematic view of a connecting rod according to the present invention;
FIG. 6 is a schematic view of a seal ring according to the present invention;
FIG. 7 is a schematic view of an adaptor according to the present invention;
FIG. 8 is a schematic view of a gasket seal of the present invention;
FIG. 9 is a schematic view of the structure of the screw of the present invention;
fig. 10 is a schematic diagram of an air conditioning system according to a first embodiment of the present invention;
FIG. 11 is a schematic diagram illustrating an air conditioning system connection according to a second embodiment of the present invention;
fig. 12 is a schematic diagram of an air conditioning system connection according to a third embodiment of the present invention.
The reference numerals in the drawings are as follows:
1. an upper cover; 2. a partition plate; 3. a cross slip ring; 4. a support plate; 5. an upper housing; 501. a spray tube through hole; 6. a main balance block; 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; 20. a fixed scroll; 21. a liquid spraying 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. a sealing gasket; 2501. a liquid spraying through hole II; 2502. a second through hole; 26. sealing cover; 27. an exhaust pipe; 28. a check valve; 29. and (5) a screw.
01. A compressor; 02. a temperature sensor; 03. a condenser; 04. a second control valve; 05. a third control valve; 06. a second throttle device; 07. a flash evaporator; 08. a first throttle device; 09. an evaporator; 010. a first control valve; 006. a third throttling device; 161. a fourth throttling device; 162. a fifth throttle device; A. a main pipeline; B. a liquid spraying pipeline; D. a first branch; E. a second branch; 100. and a vent chamber.
2001. A first tangential plane; 2002. a first screw hole; 2003. a liquid spraying channel.
Detailed Description
As shown in fig. 1 to 9, the present invention provides a compressor (preferably, a scroll compressor) mainly composed of a motor 8, an upper bracket 7, a lower bracket 13, a fixed scroll 20, a movable scroll 19, a cross slip ring 3, a crankshaft 16, and the like. The motor 8 is fixed on the main housing 10 through a motor fixing frame 9, and the upper bracket 7 is fixed on the main housing 10 through interference fit and axial thrust. The phase angles of the movable vortex disc 19 and the fixed vortex disc 20 are 180 degrees different and are oppositely arranged on the upper bracket 7, the movable vortex disc 19 moves under the drive of the crankshaft 16 and is meshed with the fixed vortex disc 20 to form a series of crescent sealed cavities which are isolated from each other and have continuously-changing volumes. The sealing cover 26 is installed on 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., it can float axially, but in normal operation, the fixed scroll 20 is tightly pressed against the movable scroll 19 by the axial force of the gas in the medium pressure chamber formed by the seal cover 26 and the back surface of the fixed scroll 20, and the movable scroll 19 is tightly pressed against the support plate 4 on the upper bracket 7 due to the high pressure gas in the compression chamber and the acting force of the fixed scroll 20, and the support plate 4 is fixed on the upper bracket 7 by 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 radial flexible eccentric sleeve 18, the eccentric sleeve 18 drives the movable vortex disc 19 to move, and the movable vortex disc 19 moves in a translational motion around the center of the crankshaft at a fixed radius under the rotation prevention limit of the cross slip ring 3. The refrigerant entering from the outside of the compressor is sucked into a crescent suction cavity formed by the movable scroll 19 and the fixed scroll 20, compressed and then enters a high-pressure cavity 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 then is discharged through the exhaust pipe 27.
A liquid spraying channel 2003 is disposed inside the fixed scroll 20, one end of the liquid spraying channel 2003 is located at an outer surface of the fixed scroll 20, and is capable of introducing liquid refrigerant and/or gaseous refrigerant outside the fixed scroll 20 into the liquid spraying channel 2003, and the other end of the liquid spraying channel 2003 extends into the inside of the fixed scroll 20 and sprays the introduced liquid refrigerant and/or gaseous refrigerant into a discharge line or a compression chamber of the compressor.
According to the invention, the liquid spraying channel is arranged in the fixed scroll, so that liquid refrigerant and/or gaseous refrigerant can be led into the fixed scroll from the outside of the fixed scroll and sprayed into the compression cavity, and liquid spraying cooling is performed when the exhaust temperature of the compressor is particularly high; the air injection cooling is carried out when the exhaust temperature of the compressor is higher, the air injection or liquid injection mode can be adopted when the exhaust temperature of the corresponding different exhaust temperatures is higher, namely, the air injection cooling or liquid injection cooling can be adopted according to different operation conditions and different operation working conditions, the working condition application range of the compressor and an air conditioning system is effectively enlarged, when the working condition load is higher, the exhaust temperature is higher, the air injection cooling is adopted at the moment to carry out the exhaust cooling, and when the working condition load is higher, the exhaust temperature is higher, the liquid injection cooling is adopted at the moment to enhance the exhaust cooling effect, so that the air injection cooling device can be suitable for various different working conditions, the operation mode of the compressor can be adjusted according to different operation working conditions, the operation efficiency and the reliability of the compressor are improved, and the operation range of the compressor is enlarged. The invention provides a compressor with air injection and liquid spraying functions, which can adjust the operation mode of the compressor according to different operation conditions, improve the operation efficiency and reliability of the compressor and enlarge the operation range of the compressor.
Preferably, the method comprises the steps of,
a first tangential plane 2001 is formed on the outer circumference of the fixed scroll 20, and one end of the liquid spray channel 2003 is disposed at the first tangential plane 2001 and extends toward the inside of the fixed scroll 20;
and/or a first jet orifice is also communicated with the other end of the liquid spray channel, and liquid refrigerant and/or gaseous refrigerant is/are jetted into the compression cavity through the first jet orifice.
The first tangential plane can be used for effectively processing the liquid injection channel, and the liquid refrigerant and/or the gaseous refrigerant introduced by the liquid injection channel can be injected into the compression chamber through the first injection port.
Preferably, the method comprises the steps of,
at least one first tangential plane 2001 is provided, and at least one liquid ejecting channel 2003 is provided in each first tangential plane 2001. This is a preferred structural form of the first tangential plane of the present invention, and one or more spray channels may be provided on the tangential plane by providing at least one tangential plane, thereby effectively increasing the spray amount or spray amount of spray or spray, and effectively improving the effect and effect of reducing the exhaust temperature.
Referring to fig. 7, preferably,
still include adapter 24, adapter 24 is the kink structure, include with first portion that first tangential plane 2001 meets and with the second portion that first portion is buckled and is connected, be provided with the hydrojet through-hole 2401 on the first portion hydrojet through-hole 2401 extends to the inside of first portion, be provided with first axial through-hole 2402 on 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 hydrojet passageway 2003 on the quiet vortex disk 20 communicates. The liquid spraying channel arranged on the fixed vortex disc can be effectively communicated through the arrangement of the adapter, and the liquid spraying channel is jointed with the first tangential plane, so that conditions are provided for supplementing liquid refrigerant or gas refrigerant with lower temperature into the liquid spraying channel to exhaust and cool; through the design of the bending structure, the pipeline is convenient to walk the pipe, the refrigerant is conveniently introduced into the shell from the outside of the shell through the pipeline, and then the refrigerant enters the inside of the static vortex disc.
Referring to fig. 5, preferably,
also included is a connecting rod 22, one end of the connecting rod 22 is provided with a second axial through hole 2202 extending internally along the axial direction thereof, the other end of the connecting rod 22 or a position near the other end is provided with a radial through hole 2201 in the radial direction, and the radial through hole 2201 communicates 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 such that the radial through hole 2201, the second axial through hole 2202 and the first axial through hole 2402 communicate 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 penetrating through the shell, so that the effect of conducting the refrigerant into the static vortex disc is achieved.
Preferably, the method comprises the steps of,
when included in the first tangential plane 2001, the compressor further includes a sealing gasket 25, the sealing gasket 25 being positionable between the adapter 24 and the first tangential plane 2001; and/or, the compressor further comprises a sealing ring 23, and the sealing ring 23 is sleeved on the periphery of the connecting rod 22 and is positioned in the first axial through hole 2402 of the adapter 24. The sealing gasket can improve the tightness between the adapter and the fixed vortex disk, and the sealing ring can improve the tightness between the interior of the adapter and the periphery of the connecting rod.
Preferably, the method comprises the steps of,
at least one first screw hole 2002 is further formed in the first tangential plane 2001; the adaptor 24 is provided with a first through hole 2403; the sealing gasket 25 further includes a second through hole 2502, and the compressor further includes a bolt or screw 29 capable of passing through the first screw hole, the first through hole 2403 and the second through hole at the same time, or passing through the second screw hole, the first through hole 2403 and the second through hole at the same time, so as to fix the adapter 24 and the sealing gasket 25 to the fixed scroll 20. Through the first screw hole, the first through hole and the second through hole which are respectively arranged at the positions, the adapter and the sealing gasket can be firmly fixed on the fixed scroll through penetrating the adapter and the sealing gasket by bolts or screws.
Preferably, the method comprises the steps of,
the device further comprises an upper shell 5 and a liquid spraying pipe 21, wherein the fixed scroll 20 and the movable scroll 19 are arranged in the upper shell 5, one end of the liquid spraying pipe 21 is connected to the radial through hole 2201 of the connecting rod 22, the other end of the liquid spraying pipe penetrates out of the upper shell 5, and a third axial through hole 2101 is formed in the liquid spraying pipe 21; the upper case 5 is provided with a liquid ejecting tube through hole 501 allowing the liquid ejecting tube 21 to pass therethrough. Through the hydrojet pipe can form the intercommunication effect with the casing outside, form the intercommunication with the connecting rod in the casing to effectively with the refrigerant from outside leading-in casing in, and then in the quiet vortex dish.
As shown in fig. 2, a first tangential plane 2001 is formed on the fixed scroll 20, and a first screw hole 2002 and a liquid spraying channel 2003 are dug on the first tangential plane 2001; as shown in fig. 3, the upper housing 5 is provided with a spray pipe through hole 501; as shown in fig. 4, the liquid ejecting tube 21 has a third axial through hole 2101 therein; as shown in fig. 5, the connecting rod 22 is provided with a radial through hole 2201, a second axial through hole 2202, and a sealing ring groove 2203 is formed on the side wall of the upper end; as shown in fig. 6, the sealing ring is in a ring shape, and can be embedded into a sealing ring groove 2203 on the connecting rod 22, so as to realize sealing between 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 sealing gasket 25 is provided with a second liquid spraying through hole 2501 and a second through hole 2502.
During assembly, one end of the liquid spraying pipe 21 is inserted into a radial through hole 2201 on the connecting rod 22 and then is brazed together, the other end of the liquid spraying pipe is communicated with a system liquid spraying pipeline after passing through a liquid spraying pipe through hole 501 on the upper shell, and the liquid spraying pipe 21 and the upper shell 5 are fixed together through brazing; the other end of the connecting rod is inserted into a first axial through hole 2402 on the adapter 24 after being embedded into a sealing ring 23 (capable of realizing sealing and axial relative movement) in a sealing ring groove 2203; the fixed scroll 20, the sealing gasket 25 and the adapter 24 are fixed together by screws 29. At this time, the system injection liquid or gas may be injected to the compressor pressure chamber 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 injection liquid through hole 2401.
The mode of enthalpy-increasing opening on the back of the static disc will be described in detail, as shown in fig. 10, a first tangential plane 2001 is formed on the static disc, and a set of threaded holes are vertically formed for fixing the adapter 24. The side surface of the static disc is provided with a hole which comprises a liquid spraying channel 2003, an exhaust hole and a middle pressure hole, wherein the exhaust hole and the middle pressure hole penetrate through the whole static disc, and the liquid spraying channel 2003 is communicated with the first jet orifice. The first enthalpy increasing channel (i.e. the liquid spraying channel 2003) is arranged on the first tangential plane 2001, and the air spraying and the liquid spraying work through the same pipeline, so that only one group of enthalpy increasing pipelines can be arranged to pass through the compressor shell to be connected with the static disc.
The invention also provides an air conditioning system comprising a condenser 03, an evaporator 09 and a first throttling device 08, which further comprises a compressor according to any of the preceding claims. According to the invention, jet cooling or spray cooling can be adopted according to different operating conditions and different operating conditions, so that the working condition application range of the compressor and an air conditioning system is effectively enlarged, when the working condition load is higher, the exhaust temperature is higher, the jet cooling is adopted at the moment to cool the exhaust, when the working condition load is too high, the exhaust temperature is too high, and the spray cooling is adopted at the moment to enhance the exhaust cooling effect, thereby being applicable to various different working conditions, being capable of adjusting the operating mode of the compressor according to different operating conditions, improving the operating efficiency and reliability of the compressor and enlarging the operating range of the compressor.
Preferably, the method comprises the steps of,
the device comprises a main pipeline A and a flash evaporator 07, 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 with an outlet end of the flash evaporator 07; the air conditioning system comprises a liquid spraying pipeline B, wherein one end of the liquid spraying pipeline B is communicated with the liquid spraying channel 2003 of the compressor 01, the other end of the liquid spraying pipeline B is communicated with the other outlet end of the flash evaporator 07, and a temperature sensor 02 is arranged on an exhaust pipeline of the compressor; the first throttling device 08 is arranged on the main pipeline A, and the liquid spraying pipeline B is provided with a first control valve 010.
The invention is a preferable structural form, and by arranging the structural form of the flash evaporator, the flash evaporation steam and the liquid refrigerant after the flash evaporation can be effectively generated, and the flash evaporation or non-flash evaporation of the flash evaporator can be effectively controlled by controlling the pressure of the flash evaporator, so that the flash evaporation of the flash evaporator can be controlled when the flash evaporator needs to be cooled by air injection, and the flash evaporation gaseous refrigerant can be injected into a compressor for air injection cooling through a liquid injection pipeline; the flash evaporator is controlled not to flash when liquid spraying cooling is needed, and at the moment, the flash evaporator only plays roles of liquid passing and liquid separating, and liquid refrigerant is sprayed into the compressor through the liquid spraying pipeline to perform liquid spraying cooling, so that liquid spraying or air spraying inside the compressor is realized through the flash evaporator and the same liquid spraying pipeline, and effective switching and control of liquid spraying or air spraying are realized.
In a preferred embodiment of the present invention,
as shown in fig. 10, a first branch D and a second branch E connected in parallel are further disposed between the inlet of the flash evaporator 07 and the condenser 03, a second control valve 04 is disposed on the first branch D, a third control valve 05 is disposed on the second branch E, and a second throttling device 06 is further disposed on the second branch E. The first preferred structural form of the embodiment of the invention is that the two branches, the second control valve, the third control valve and the second throttling device are arranged on the two branches, so that the branches of the second throttling device are controlled to be opened to throttle the refrigerant to form gas during air injection, and the branches of the second throttling device are controlled to be closed to not throttle the refrigerant during liquid injection, so that the liquid refrigerant enters the flash evaporator, and liquid injection cooling is realized.
As shown in fig. 10, the specific embodiment combined with the system is as follows: when the compressor runs, the operation is preferably performed in a jet mode, namely the second control valve 04 (preferably an electromagnetic valve) is closed, the third control valve 05 (preferably an electromagnetic valve) is opened, at the moment, the refrigerant condensed by the condenser 03 passes through the third control valve 05 and is throttled by the second throttling device 06, the throttled refrigerant enters the flash evaporator 07, part of gaseous refrigerant which is flashed in the flash evaporator 07 is connected into a liquid spraying copper pipe (a liquid spraying pipe 21) of the compressor through the first control valve 010 and then is sprayed into a medium-pressure cavity of the compressor, and most of the refrigerant passes through the first throttling device 08 and then enters the evaporator 09 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 under a safety value (generally set at any value between 115 ℃ and 130 ℃) in an air injection mode, the second control valve 04 is opened, the third control valve 05 is closed, at the moment, the refrigerants entering the flash evaporator 07 are all liquid, and the rear part of liquid refrigerants are connected into a liquid spraying copper pipe (a liquid spraying pipe 21) of the compressor after passing through the first control valve 10 (preferably a stepping valve) and then are sprayed into a medium-pressure cavity of the compressor, so that the purposes of reducing the exhaust temperature and guaranteeing the safe operation of the compressor are achieved.
In a second preferred embodiment of the present invention,
as shown in fig. 11, a third throttling device 006 is also provided between the inlet of the flash evaporator 07 and the condenser 03. The second embodiment of the invention is a preferable structural form, and through a pipeline and a third throttling device arranged on the pipeline, the third throttling device is controlled to work in a lower pressure adjusting range during air injection, the throttling process is obviously used for throttling the refrigerant to form gas, the third throttling device is controlled to work in a higher pressure adjusting range during liquid injection, the throttling process is smaller (or not obvious) so as not to throttle the refrigerant or smaller, and the liquid refrigerant enters the flash evaporator, so that liquid injection cooling is realized.
As shown in fig. 11, the present invention may also use a larger throttle valve (third throttle device 006): when the air injection is operated, the throttle valve works in a lower pressure adjusting range, at the moment, the refrigerant in the flash evaporator 07 is divided into gas and liquid phases, the gaseous refrigerant is connected into a liquid injection copper pipe (a liquid injection pipe 21) of the compressor after passing through the first control valve 010 and is injected into a medium pressure cavity of the compressor, and the liquid refrigerant enters a main loop after being further throttled by the first throttle device 08; when the liquid spraying operation is needed, the third throttling device 006 works in a higher pressure adjusting range, at this time, the refrigerant in the flash evaporator 07 is all in a liquid state, part of the liquid refrigerant is connected into a liquid spraying copper pipe (a liquid spraying pipe 21) of the compressor to be sprayed into a middle pressure cavity of the compressor after passing through the first control valve 010, and most of the liquid refrigerant enters the main loop after being further throttled by the first control valve 010. Therefore, the switching between the air injection spray modes is realized.
Embodiment three it is preferred that,
as shown in fig. 12, a first branch D and a second branch E connected in parallel are further disposed between the inlet of the flash evaporator 07 and the condenser 03, a fourth throttling device 161 is disposed on the first branch D, a fifth throttling device 162 is further disposed on the second branch E, and a pressure adjustment range of the fourth throttling device 161 is greater than that of the fifth throttling device 162. This is a preferred structural form of the third embodiment of the present invention, by two branches and the fourth throttling device and the fifth throttling device respectively disposed on the two branches, and the pressure adjustment range of the fourth throttling device 161 is greater than the pressure adjustment range of the fifth throttling device 162, so that the branch of the fifth throttling device is controlled to open during air injection so that the fifth throttling device works in a lower pressure adjustment range, the throttling process obviously throttles the refrigerant to form gas, and the branch of the fourth throttling device is controlled to open during liquid injection so that the fourth throttling device works in a higher pressure adjustment range, so that the throttling process is smaller (or not obvious) so as not to throttle the refrigerant or be smaller, so that the liquid refrigerant enters the flash evaporator, and liquid injection cooling is realized.
As shown in fig. 12, two throttles (a fourth throttle device 161 and a fifth throttle device 162) with different specifications can also be selected in the present invention: when the air injection is operated, the large-pressure-range adjusting throttle valve (the fourth throttle device 161) is completely closed, the small-range adjusting throttle valve (the fifth throttle device 162) is opened, at the moment, the refrigerant in the flash evaporator 07 is divided into two phases of gas and liquid, the gaseous refrigerant is connected into a liquid spraying copper pipe (a liquid spraying pipe 21) of the compressor after passing through the first control valve 010 and is sprayed into a pressure cavity of the compressor, and the liquid refrigerant enters a main loop after being further throttled by the first throttle device 08; when the liquid spraying operation is needed, the larger-range adjusting throttle valve (the fourth throttle device 161) is opened, the smaller-range adjusting throttle valve (the fifth throttle device 162) is closed, at the moment, the refrigerant in the flash evaporator 07 is all in a liquid state, part of the liquid refrigerant is connected into the liquid spraying copper pipe (the liquid spraying pipe 21) of the compressor to be sprayed into the medium-pressure cavity of the compressor after passing through the first control valve 010 (preferably a stepping valve), and most of the liquid refrigerant enters the main loop after being further throttled by the first throttle device 08. Therefore, the switching between the air injection spray modes is realized.
The invention also provides a control method of the air conditioning system, which uses the air conditioning system of any one of the previous claims to selectively control the pressure of the flash evaporator 07 according to the exhaust temperature of the compressor to control whether the flash evaporator is flash evaporated or not and control whether the liquid spraying pipeline B is opened or not. The control method of the air conditioning system can selectively control the adoption of jet cooling or spray cooling according to different operating conditions and different operating conditions, effectively increases the working condition application range of the compressor and the air conditioning system, has higher exhaust temperature when the working condition load is higher, adopts jet cooling to cool the exhaust when the working condition load is higher, has higher exhaust temperature when the working condition load is higher, adopts spray cooling to enhance the exhaust cooling effect, thereby being applicable to various different working conditions, being capable of adjusting the operating mode of the compressor according to different operating conditions, improving the operating efficiency and reliability of the compressor and increasing the operating range of the compressor.
Referring to fig. 10-12, preferably,
when the flash evaporator 07 is further included, when the liquid spraying pipeline B is provided with a first control valve 010:
when the exhaust gas temperature is detected to be higher than a safe range (preferably between 115 ℃ and 130 ℃), the flash evaporator 07 is controlled not to flash, and the first control valve 010 is controlled to be opened; when the exhaust gas temperature is detected to be lower than a safe range, the flash evaporator 07 is controlled to flash, and the first control valve 010 is controlled to be opened.
The method is a preferable control method of the air conditioning system (common) in the first to third embodiments of the present invention, and by controlling the pressure of the flash evaporator, whether the flash evaporator flashes gas or does not flash gas according to the actual exhaust temperature, thereby realizing the cooling effect of spraying liquid or spraying gas through the same pipeline (spraying pipeline B) and adopting different spraying refrigerants for cooling different working conditions (loads), the exhaust temperature can be effectively reduced, and the performance and applicability of the compressor and the air conditioning system can be improved.
Example 1
Referring to fig. 10, preferably,
when the first branch D and the second branch E are further included, and the second control valve 04 is disposed on the first branch D, and the third control valve 05 and the second throttling device 06 are disposed on the second branch E:
When the exhaust temperature is detected to be higher than a safety range, controlling to open the second control valve 04 and closing the third control valve 05; when the exhaust temperature is detected to be lower than a safety range, the third control valve 05 is controlled to be opened, and the second control valve 04 is controlled to be closed.
This is a preferred control method of the air conditioning system according to the first embodiment of the present invention, such that the branch of the second throttling means is controlled to be opened to throttle the refrigerant to form a gas when spraying the liquid, and the branch of the second throttling means is controlled to be closed not to throttle the refrigerant so that the liquid refrigerant enters the flash evaporator to realize the cooling of the liquid spray.
As shown in fig. 10, the specific embodiment combined with the system is as follows: when the compressor runs, the operation is preferably performed in a jet mode, namely the second control valve 04 (preferably an electromagnetic valve) is closed, the third control valve 05 (preferably an electromagnetic valve) is opened, at the moment, the refrigerant condensed by the condenser 03 passes through the third control valve 05 and is throttled by the second throttling device 06, the throttled refrigerant enters the flash evaporator 07, part of gaseous refrigerant which is flashed in the flash evaporator 07 is connected into a liquid spraying copper pipe (a liquid spraying pipe 21) of the compressor through the first control valve 010 and then is sprayed into a medium-pressure cavity of the compressor, and most of the refrigerant passes through the first throttling device 08 and then enters the evaporator 09 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 under a safety value (generally set at any value between 115 ℃ and 130 ℃) in an air injection mode, the second control valve 04 is opened, the third control valve 05 is closed, at the moment, the refrigerants entering the flash evaporator 07 are all liquid, and the rear part of liquid refrigerants are injected into a middle pressure cavity of the compressor after passing through the first control valve 10 and then being connected into a liquid injection copper pipe (a liquid injection pipe 21) of the compressor, so that the purposes of reducing the exhaust temperature and guaranteeing the safe operation of the compressor are achieved.
Example two
As shown in fig. 11, when the third throttling means 006 is further included:
when the exhaust temperature is detected to be higher than the safety range, controlling the third throttling device 006 to operate throttling under a higher pressure regulation range; when the exhaust temperature is detected to be lower than the safety range, the third throttle device 006 is controlled to operate throttle at a lower pressure adjustment range. The second embodiment of the invention is a preferred control form, and through a pipeline and a third throttling device arranged on the pipeline, the third throttling device is controlled to work in a lower pressure adjusting range during air injection, the throttling process is obviously controlled to throttle the refrigerant to form gas, the third throttling device is controlled to work in a higher pressure adjusting range during liquid injection, the throttling process is less (or not obviously) to not throttle the refrigerant or is smaller, and the liquid refrigerant enters the flash evaporator, so that liquid injection cooling is realized.
As shown in fig. 11, the present invention may also use a larger throttle valve (third throttle device 006): when the air injection is operated, the throttle valve works in a lower pressure adjusting range, at the moment, the refrigerant in the flash evaporator 07 is divided into gas and liquid phases, the gaseous refrigerant is connected into a liquid injection copper pipe (a liquid injection pipe 21) of the compressor after passing through the first control valve 010 and is injected into a medium pressure cavity of the compressor, and the liquid refrigerant enters a main loop after being further throttled by the first throttle device 08; when the liquid spraying operation is needed, the third throttling device 006 works in a higher pressure adjusting range, at this time, the refrigerant in the flash evaporator 07 is all in a liquid state, part of the liquid refrigerant is connected into a liquid spraying copper pipe (a liquid spraying pipe 21) of the compressor to be sprayed into a middle pressure cavity of the compressor after passing through the first control valve 010, and most of the liquid refrigerant enters the main loop after being further throttled by the first control valve 010. Therefore, the switching between the air injection spray modes is realized.
Example III
As shown in fig. 12, when the first branch D and the second branch E are further included, the fourth throttling device 161 is disposed on the first branch D, the fifth throttling device 162 is disposed on the second branch E, and the pressure adjustment range of the fourth throttling device 161 is greater than the pressure adjustment range of the fifth throttling device 162:
when the exhaust temperature is detected to be higher than a safety range, controlling to open the fourth throttling means 161 and closing the fifth throttling means 162; when the exhaust temperature is detected to be lower than the safety range, the control opens the fifth throttling means 162 and closes the fourth throttling means 161. This is a preferred structural form of the third embodiment of the present invention, by two branches and the fourth throttling device and the fifth throttling device respectively disposed on the two branches, and the pressure adjustment range of the fourth throttling device 161 is greater than the pressure adjustment range of the fifth throttling device 162, so that the branch of the fifth throttling device is controlled to open during air injection so that the fifth throttling device works in a lower pressure adjustment range, the throttling process obviously throttles the refrigerant to form gas, and the branch of the fourth throttling device is controlled to open during liquid injection so that the fourth throttling device works in a higher pressure adjustment range, so that the throttling process is smaller (or not obvious) so as not to throttle the refrigerant or be smaller, so that the liquid refrigerant enters the flash evaporator, and liquid injection cooling is realized.
As shown in fig. 12, two throttles (a fourth throttle device 161 and a fifth throttle device 162) with different specifications can also be selected in the present invention: when the air injection is operated, the large-pressure-range adjusting throttle valve (the fourth throttle device 161) is completely closed, the small-range adjusting throttle valve (the fifth throttle device 162) is opened, at the moment, the refrigerant in the flash evaporator 07 is divided into two phases of gas and liquid, the gaseous refrigerant is connected into a liquid spraying copper pipe (a liquid spraying pipe 21) of the compressor after passing through the first control valve 010 and is sprayed into a pressure cavity of the compressor, and the liquid refrigerant enters a main loop after being further throttled by the first throttle device 08; when the liquid spraying operation is needed, the larger-range adjusting throttle valve (the fourth throttle device 161) is opened, the smaller-range adjusting throttle valve (the fifth throttle device 162) is closed, at the moment, the refrigerant in the flash evaporator 07 is all in a liquid state, part of the liquid refrigerant is connected into the liquid spraying copper pipe (the liquid spraying pipe 21) of the compressor to be sprayed into the medium-pressure cavity of the compressor after passing through the first control valve 010 (preferably a stepping valve), and most of the liquid refrigerant enters the main loop after being further throttled by the first throttle device 08. Therefore, the switching between the air injection spray modes is realized.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (15)
1. An air conditioning system, comprising: condenser (03), evaporator (09) and first throttling means (08), characterized in that: comprises a compressor, a main pipeline (A) and a flash evaporator (07),
the compressor includes:
a fixed scroll (20) and an orbiting scroll (19), wherein a liquid spraying channel (2003) is arranged in the fixed scroll (20), one end of the liquid spraying channel (2003) is positioned at the outer surface of the fixed scroll (20) and can guide liquid refrigerant and/or gaseous 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 and/or gaseous refrigerant into a compression cavity;
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 with an outlet end of the flash evaporator (07); the air conditioning system comprises a liquid spraying pipeline (B), wherein one end of the liquid spraying pipeline is communicated with the liquid spraying channel (2003) of the compressor (01), the other end of the liquid spraying pipeline is communicated with the other outlet end of the flash evaporator (07), and a temperature sensor (02) is arranged on an exhaust pipeline of the compressor; the first throttling device (08) is arranged on the main pipeline (A), and the liquid spraying pipeline (B) is provided with a first control valve (010);
The air conditioning system selectively controls the pressure of a flash evaporator (07) to control whether flash evaporation is performed or not according to the exhaust temperature of a compressor, and controls whether the liquid spraying pipeline (B) is opened or not; when the exhaust temperature is detected to be higher than a safety range, controlling the flash evaporator (07) not to flash and controlling the first control valve (010) to be opened; when the exhaust gas temperature is detected to be lower than a safety range, the flash evaporator (07) is controlled to flash, and the first control valve (010) is controlled to be opened.
2. An air conditioning system according to claim 1, wherein:
a first tangential plane (2001) is formed on the outer periphery of the fixed scroll (20), and one end of the liquid spraying channel (2003) is arranged at the first tangential plane (2001) and extends towards the inside of the fixed scroll (20);
and/or a first jet orifice is also communicated with the other end of the liquid spraying channel, and liquid-state refrigerant and/or gaseous-state refrigerant are/is jetted into the compression cavity through the first jet orifice.
3. An air conditioning system according to claim 2, wherein:
the first tangential planes (2001) are at least one, and at least one liquid spraying channel (2003) is arranged on each first tangential plane (2001).
4. An air conditioning system according to any of claims 2-3, characterized in that:
still include adapter (24), adapter (24) for buckling shape structure, include with first portion that first tangential 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) 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 hydrojet passageway (2003) intercommunication on quiet vortex dish (20).
5. An air conditioning system according to claim 4, 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) makes radial through-hole (2201), second axial through-hole (2202) with first axial through-hole (2402) communicate in proper order.
6. An air conditioning system according to claim 5, wherein:
when comprising a first tangential plane (2001), the compressor further comprises a sealing gasket (25), said sealing gasket (25) being positionable between said adapter (24) and said first tangential plane (2001); and/or, the compressor further comprises a sealing ring (23), and the sealing ring (23) is sleeved on the periphery of the connecting rod (22) and is positioned in the first axial through hole (2402) of the adapter (24).
7. An air conditioning system according to claim 6, wherein:
at least one first screw hole (2002) is also arranged on the first tangential plane (2001); the adapter (24) is provided with a first through hole (2403); the sealing gasket (25) is further provided with a second through hole (2502), and the compressor further comprises a bolt or a screw (29) which can pass through the first screw hole, the first through hole (2403) and the second through hole at the same time, so that the adapter (24) and the sealing gasket (25) are fixed on the fixed vortex plate (20).
8. An air conditioning system according to any of claims 5-7, characterized in that:
the device further comprises an upper shell (5) and a liquid spraying pipe (21), wherein the fixed scroll (20) and the movable scroll (19) are arranged in the upper shell (5), one end of the liquid spraying pipe (21) is connected to the radial through hole (2201) of the connecting rod (22), the other end of the liquid spraying pipe penetrates out of the upper shell (5), and a third axial through hole (2101) is formed in the liquid spraying pipe (21); the upper shell (5) is provided with a spray pipe through hole (501) which allows the spray pipe (21) to pass through.
9. An air conditioning system according to claim 1, wherein:
a first branch (D) and a second branch (E) which are connected in parallel are further arranged between an inlet of the flash evaporator (07) and the condenser (03), a second control valve (04) is arranged on the first branch (D), a third control valve (05) is arranged on the second branch (E), and a second throttling device (06) is further arranged on the second branch (E).
10. An air conditioning system according to claim 1, wherein:
a third throttling device (006) is also arranged between the inlet of the flash evaporator (07) and the condenser (03).
11. An air conditioning system according to 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 (07) and the condenser (03), a fourth throttling device (161) is arranged on the first branch (D), a fifth throttling device (162) is further arranged on the second branch (E), and the pressure adjusting range of the fourth throttling device (161) is larger than that of the fifth throttling device (162).
12. A control method of an air conditioning system, characterized by:
use of an air conditioning system according to any of claims 1-11, selecting control of the pressure of the flash evaporator (07) to control whether flash evaporation and control of the spray liquid pipeline (B) to open according to the compressor discharge temperature; when the exhaust temperature is detected to be higher than a safety range, controlling the flash evaporator (07) not to flash and controlling the first control valve (010) to be opened; when the exhaust gas temperature is detected to be lower than a safety range, the flash evaporator (07) is controlled to flash, and the first control valve (010) is controlled to be opened.
13. The control method according to claim 12, characterized in that:
when the device further comprises a first branch (D) and a second branch (E), and the first branch (D) is provided with a second control valve (04), and the second branch (E) is provided with a third control valve (05) and a second throttling device (06):
when the exhaust temperature is detected to be higher than a safety range, controlling to open the second control valve (04) and closing the third control valve (05); when the exhaust temperature is detected to be lower than a safety range, the third control valve (05) is controlled to be opened, and the second control valve (04) is controlled to be closed.
14. The control method according to claim 12, characterized in that:
when a third restriction (006) is also included:
controlling the third throttling means (006) to operate throttling at a higher pressure regulation range when the exhaust temperature is detected to be higher than a safety range; when the exhaust temperature is detected to be lower than a safety range, the third throttling device (006) is controlled to operate throttling under a lower pressure adjusting range.
15. The control method according to claim 12, characterized in that:
when the device further comprises a first branch (D) and a second branch (E), wherein a fourth throttling device (161) is arranged on the first branch (D), a fifth throttling device (162) is arranged on the second branch (E), and the pressure adjusting range of the fourth throttling device (161) is larger than that of the fifth throttling device (162):
When the exhaust temperature is detected to be higher than a safety range, controlling to open the fourth throttling device (161) and closing the fifth throttling device (162); when the exhaust temperature is detected to be lower than a safety range, the fifth throttling device (162) is controlled to be opened, and the fourth throttling device (161) is controlled to be closed.
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| CN203286821U (en) * | 2013-05-03 | 2013-11-13 | 珠海格力电器股份有限公司 | Double-stage enthalpy increasing air conditioner system |
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