CN105042915A - Refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation - Google Patents
Refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation Download PDFInfo
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- CN105042915A CN105042915A CN201510444588.4A CN201510444588A CN105042915A CN 105042915 A CN105042915 A CN 105042915A CN 201510444588 A CN201510444588 A CN 201510444588A CN 105042915 A CN105042915 A CN 105042915A
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- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
- F25B1/047—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of screw type
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- 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
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- 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
- F25B41/31—Expansion valves
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- 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
- F25B41/37—Capillary tubes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention provides a refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation. The refrigerating system comprises a compressor, an oil separator, a first heat exchanger, a second heat exchanger, a flash vaporization device, a first throttling device, a second throttling device, a third throttling device and an oil cooling pipe which are connected through a pipeline. Air supplementing enthalpy increasing circulation is formed by the compressor, the oil separator, the first heat exchanger, the first throttling device, the flash vaporization device, the second throttling device and the second heat exchanger. Oil cooling compression circulation is formed by the compressor, the oil separator, the oil cooling pipe and the third throttling device. Heat exchanging is conducted between the oil cooling pipe and the flash vaporization device. Oil in a mixture (oil and refrigerant) at an exhaust port of the compressor ranges from 0 percent to 50 percent, and the mass percent of the oil can be adjusted. The oil spraying amount can be increased, compression heat can be effectively absorbed through the oil cooling compression process, the exhaust temperature of the compressor is reduced, and the isentropic efficiency and the isovolumetric efficiency of the compressor are improved. By means of combination with air supplementing enthalpy increasing circulation, refrigerant flash vaporization of the flash vaporization device is used for cooling oil, an oil cooling system is simplified, and the performance of oil cooling compression circulation is improved.
Description
Technical field
The present invention relates to refrigerating field, particularly relate to and a kind ofly there is oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates.
Background technology
At present, there is the phenomenons such as efficiency is lower, excessive discharge temperature under being operated in large temperature difference operating mode in refrigeration plant, and general solution adopts tonifying Qi to increase enthalpy circulation, improves system effectiveness and reduce delivery temperature by second vapor injection.But when the temperature difference large to a certain extent time, tonifying Qi increases the problem that enthalpy circulation not only cannot solve excessive discharge temperature, causes system to shut down, also there is the low-down problem of systematic function.Another method is toward compressor cylinder-in oil-jet, absorbing a large amount of heat of compression, reducing the temperature of gas in the jar by spraying into a certain amount of oil.But distributive value and oil spout temperature are again the key factors of influential system performance, which limits the performance of oil cooling but compression cycle.
Summary of the invention
The object of the invention is to solve the above-mentioned problems in the prior art, by spraying into a certain amount of oil, effectively absorbing the heat of compression, reduce the delivery temperature of compressor, improve the isentropic efficiency of compressor and wait appearance efficiency, by air-breathing backheat, improving oil cooling but compression cycle systematic function.And increase enthalpy with tonifying Qi and circulate and combine, utilize flash evaporation inner refrigerant shwoot oil supply to cool, simplify oil cooling system, further increase and there is oil cooling but compression cycle and tonifying Qi increase the performance of the refrigeration system that enthalpy circulates.Technical scheme of the present invention is as follows:
But compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates to have oil cooling, comprise compressor, oil eliminator, First Heat Exchanger, second heat exchanger, flash evaporation, first throttle device, second throttling arrangement, 3rd throttling arrangement, oil cooling pipe, exhaust outlet of compressor is connected with oil eliminator port A, oil eliminator port B is connected with one end of First Heat Exchanger, the other end of First Heat Exchanger is connected with one end of first throttle device, the other end of first throttle device is connected with flash evaporation port A, flash evaporation port C and compressor tonifying Qi increase enthalpy mouth and are connected, flash evaporation port B is connected with one end of the second throttling arrangement, the other end of the second throttling arrangement is connected with one end of the second heat exchanger, the other end of the second heat exchanger is connected with compressor air suction mouth, form tonifying Qi and increase enthalpy circulation, exhaust outlet of compressor is connected with oil eliminator port A, oil eliminator port C is connected with one end of oil cooling pipe, the other end of oil cooling pipe is connected with one end of the 3rd throttling arrangement, and the other end of the 3rd throttling arrangement is connected with the pouring orifice of compressor, forms oil cooling but compression cycle.Wherein, oil cooling pipe and flash evaporation heat exchange; In exhaust outlet of compressor mixture (oil and cold-producing medium), the mass percent of oil is adjustable between 0%-50%.
Further, described refrigeration system also comprises an air-breathing backheat branch road, flash evaporation port B is connected with the 3rd heat exchanger port A, 3rd heat exchanger port B is connected with one end of the second throttling arrangement, 3rd heat exchanger port C is connected with a port of the second heat exchanger, and the 3rd heat exchanger port D is connected with the air intake duct of compressor.
Further, described refrigeration system also comprises cross valve, and described cross valve first end is connected with oil eliminator port B, and the second end is connected with one end of First Heat Exchanger, and the 3rd end is connected with the air entry of compressor, and the 4th end is connected with one end of the second heat exchanger.
Further, described refrigeration system also comprises oil cooler, and one end of oil cooler is connected with oil eliminator port C, and the other end is connected with oil cooling pipe.
Further, in described refrigeration system, the first pouring orifice of compressor and the air entry of compressor can be two, compressor independently mouth, and preferably, the pouring orifice of compressor and the air entry of compressor are the same mouth of compressor.
Further, described oil cooling pipe and flash evaporation heat exchange mode are that oil cooling pipe passes flash evaporation.
Further, described refrigeration system also comprises the second oiling branch road, after oil cooling pipe and flash evaporation heat exchange, oil cooling pipe is except being connected with one end of the 3rd throttling arrangement, also be connected with one end of the 4th throttling arrangement, the other end of the 4th throttling arrangement is connected with the second pouring orifice of compressor, and preferably, it is same mouth that the second pouring orifice and tonifying Qi increase enthalpy mouth.
Further, in described refrigeration system, throttling arrangement can be capillary, electric expansion valve or heating power expansion valve.
Further, compressor can be rotor-type compressor, scroll compressor or screw compressor.
The invention has the beneficial effects as follows:
Refrigeration system of the present invention, not only remain the advantage that tonifying Qi increases enthalpy, also utilize oil cooling but compression cycle reduce compressor delivery temperature, improve compressor isentropic efficiency and etc. hold efficiency, circulate combine by increasing enthalpy with tonifying Qi simultaneously, flash evaporation inner refrigerant shwoot oil supply is utilized to cool, simplify oil cooling system, and further increase the performance of oil cooling compression cycle by backheat branch road.
Accompanying drawing explanation
Fig. 1 of the present inventionly a kind ofly has oil cooling but compression cycle and tonifying Qi increases the schematic diagram of the refrigeration system embodiment one that enthalpy circulates;
Fig. 2 of the present inventionly a kind ofly has oil cooling but compression cycle and tonifying Qi increases the schematic diagram of the refrigeration system embodiment two that enthalpy circulates;
Fig. 3 of the present inventionly a kind ofly has oil cooling but compression cycle and tonifying Qi increases the schematic diagram of the refrigeration system embodiment three that enthalpy circulates;
Fig. 4 of the present inventionly a kind ofly has oil cooling but compression cycle and tonifying Qi increases the schematic diagram of the refrigeration system embodiment four that enthalpy circulates;
Fig. 5 of the present inventionly a kind ofly has oil cooling but compression cycle and tonifying Qi increases the schematic diagram of the refrigeration system embodiment five that enthalpy circulates;
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, to of the present invention below in conjunction with drawings and Examples a kind ofly there is oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates and be further elaborated.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
Embodiment one
As shown in Figure 1, compressor 1 exhaust outlet is connected with oil eliminator 2 port A, oil eliminator 2 port B is connected with one end of First Heat Exchanger 3, the other end of First Heat Exchanger 3 is connected with one end of first throttle device 4, the other end of first throttle device 4 is connected with flash evaporation 5 port A, flash evaporation 5 port C increases enthalpy mouth with compressor 1 tonifying Qi and is connected, flash evaporation 5 port B is connected with one end of the second throttling arrangement 6, the other end of the second throttling arrangement 6 is connected with one end of the second heat exchanger 7, the other end of the second heat exchanger 7 is connected with compressor 1 air entry, form tonifying Qi and increase enthalpy circulation, compressor 1 exhaust outlet is connected with oil eliminator 2 port A, oil eliminator 2 port C is connected with one end of oil cooling pipe 8, the other end of oil cooling pipe 8 is connected with one end of the 3rd throttling arrangement 9 through flash evaporation 5, the other end of the 3rd throttling arrangement 9 is connected with the pouring orifice of compressor 1, forms oil cooling but compression cycle.
Preferably, the pouring orifice of compressor and the air entry of compressor are the same mouth of compressor.
Preferably, oily in exhaust outlet of compressor mixture (oil and cold-producing medium) mass percent is between 0%-50%.
Embodiment two
As shown in Figure 2, compressor 1 exhaust outlet is connected with oil eliminator 2 port A, oil eliminator 2 port B is connected with one end of First Heat Exchanger 3, the other end of First Heat Exchanger 3 is connected with one end of first throttle device 4, the other end of first throttle device 4 is connected with flash evaporation 5 port A, flash evaporation 5 port C increases enthalpy mouth with compressor 1 tonifying Qi and is connected, flash evaporation 5 port B is connected with one end of the second throttling arrangement 6, the other end of the second throttling arrangement 6 is connected with one end of the second heat exchanger 7, the other end of the second heat exchanger 7 is connected with compressor 1 air entry, form tonifying Qi and increase enthalpy circulation, compressor 1 exhaust outlet is connected with oil eliminator 2 port A, oil eliminator 2 port C is connected with one end of oil cooler 10, the other end of oil cooler 10 is connected with one end of oil cooling pipe 8, the other end of oil cooling pipe 8 is connected with one end of the 3rd throttling arrangement 9 through flash evaporation 5, the other end of the 3rd throttling arrangement 9 is connected with the pouring orifice of compressor 1, forms oil cooling but compression cycle.
Preferably, the pouring orifice of compressor and the air entry of compressor are the same mouth of compressor.
Preferably, oily in exhaust outlet of compressor mixture (oil and cold-producing medium) mass percent is between 0%-50%.
Embodiment three
As shown in Figure 3, compressor 1 exhaust outlet is connected with oil eliminator 2 port A, oil eliminator 2 port B is connected with one end of First Heat Exchanger 3, the other end of First Heat Exchanger 3 is connected with one end of first throttle device 4, the other end of first throttle device 4 is connected with flash evaporation 5 port A, flash evaporation 5 port C increases enthalpy mouth with compressor 1 tonifying Qi and is connected, flash evaporation 5 port B is connected with the 3rd heat exchanger 11 port A, 3rd heat exchanger 11 port B is connected with one end of the second throttling arrangement 6, the other end of the second throttling arrangement 6 is connected with one end of the second heat exchanger 7, the other end of the second heat exchanger 7 is connected with the 3rd heat exchanger 11 port C, the air intake duct of the 3rd heat exchanger 11 port D and compressor is connected to form tonifying Qi and increases enthalpy and circulate, compressor 1 exhaust outlet is connected with oil eliminator 2 port A, oil eliminator 2 port C is connected with one end of oil cooler 10, the other end of oil cooler 10 is connected with one end of oil cooling pipe 8, the other end of oil cooling pipe 8 is connected with one end of the 3rd throttling arrangement 9 through flash evaporation 5, the other end of the 3rd throttling arrangement 9 is connected with the pouring orifice of compressor 1, forms oil cooling but compression cycle.
Preferably, the pouring orifice of compressor and the air entry of compressor are the same mouth of compressor.
Preferably, oily in exhaust outlet of compressor mixture (oil and cold-producing medium) mass percent is between 0-50%.
Embodiment four
As shown in Figure 4, compressor 1 exhaust outlet is connected with oil eliminator 2 port A, oil eliminator 2 port B is connected with one end of First Heat Exchanger 3, the other end of First Heat Exchanger 3 is connected with one end of first throttle device 4, the other end of first throttle device 4 is connected with flash evaporation 5 port A, flash evaporation 5 port C increases enthalpy mouth with compressor 1 tonifying Qi and is connected, flash evaporation 5 port B is connected with the 3rd heat exchanger 11 port A, 3rd heat exchanger 11 port B is connected with one end of the second throttling arrangement 6, the other end of the second throttling arrangement 6 is connected with one end of the second heat exchanger 7, the other end of the second heat exchanger 7 is connected with the 3rd heat exchanger 11 port C, the air intake duct of the 3rd heat exchanger 11 port D and compressor is connected to form tonifying Qi and increases enthalpy and circulate, compressor 1 exhaust outlet is connected with oil eliminator 2 port A, oil eliminator 2 port C is connected with one end of oil cooler 10, the other end of oil cooler 10 is connected with one end of oil cooling pipe 8, the other end of oil cooling pipe 8 is connected with the 3rd throttling arrangement 9 one end with the 4th throttling arrangement 12 through flash evaporation 5, the other end of the 3rd throttling arrangement 9 is connected with the first pouring orifice of compressor 1, the other end of the 4th throttling arrangement 12 is connected with the second pouring orifice of compressor 1, forms oil cooling but compression cycle.
Preferably, the first pouring orifice of compressor and the air entry of compressor are the same mouth of compressor.
Preferably, the second pouring orifice of compressor and the tonifying Qi of compressor increase the same mouth that enthalpy mouth is compressor.
Preferably, oily in exhaust outlet of compressor mixture (oil and cold-producing medium) mass percent is between 0-50%.
Embodiment five
As shown in Figure 5, compressor 1 exhaust outlet is connected with oil eliminator 2 port A, oil eliminator 2 port B is connected with cross valve 13 first end, cross valve 13 second end is connected with one end of First Heat Exchanger 3, the other end of First Heat Exchanger 3 is connected with one end of first throttle device 4, the other end of first throttle device 4 is connected with flash evaporation 5 port A, flash evaporation 5 port C increases enthalpy mouth with compressor 1 tonifying Qi and is connected, flash evaporation 5 port B is connected with the 3rd heat exchanger 11 port A, 3rd heat exchanger 11 port B is connected with one end of the second throttling arrangement 6, the other end of the second throttling arrangement 6 is connected with one end of the second heat exchanger 7, the other end of the second heat exchanger 7 is connected with cross valve 13 the 3rd end, cross valve 13 the 4th end is connected with the 3rd heat exchanger 11 port C, the air intake duct of the 3rd heat exchanger 11 port D and compressor is connected to form tonifying Qi and increases enthalpy and circulate, compressor 1 exhaust outlet is connected with oil eliminator 2 port A, oil eliminator 2 port C is connected with one end of oil cooler 10, the other end of oil cooler 10 is connected with one end of oil cooling pipe 8, the other end of oil cooling pipe 8 is connected with the 3rd throttling arrangement 9 one end with the 4th throttling arrangement 12 through flash evaporation 5, the other end of the 3rd throttling arrangement 9 is connected with the first pouring orifice of compressor 1, the other end of the 4th throttling arrangement 12 is connected with the second pouring orifice of compressor 1, forms oil cooling but compression cycle.
Preferably, the first pouring orifice of compressor and the air entry of compressor are the same mouth of compressor.
Preferably, the second pouring orifice of compressor and the tonifying Qi of compressor increase the same mouth that enthalpy mouth is compressor.
Preferably, oily in exhaust outlet of compressor mixture (oil and cold-producing medium) mass percent is between 0-50%.
Above embodiment a kind of have oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates, solve refrigeration system delivery temperature high problem under larger temperature difference operating mode, and by the oil cooling of band air-breathing backheat but compression cycle further increase system energy efficiency.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. one kind has oil cooling but compression cycle and tonifying Qi increases the refrigeration system that enthalpy circulates, comprise compressor, oil eliminator, First Heat Exchanger, the second heat exchanger, flash evaporation, first throttle device, the second throttling arrangement, the 3rd throttling arrangement, oil cooling pipe, it is characterized in that:
Exhaust outlet of compressor is connected with oil eliminator port A, oil eliminator port B is connected with one end of First Heat Exchanger, the other end of First Heat Exchanger is connected with one end of first throttle device, the other end of first throttle device is connected with flash evaporation port A, flash evaporation port C and compressor tonifying Qi increase enthalpy mouth and are connected, flash evaporation port B is connected with one end of the second throttling arrangement, the other end of the second throttling arrangement is connected with one end of the second heat exchanger, the other end of the second heat exchanger is connected with compressor air suction mouth, forms tonifying Qi and increases enthalpy circulation;
Exhaust outlet of compressor is connected with oil eliminator port A, oil eliminator port C is connected with one end of oil cooling pipe, the other end of oil cooling pipe is connected with one end of the 3rd throttling arrangement, and the other end of the 3rd throttling arrangement is connected with the pouring orifice of compressor, forms oil cooling but compression cycle;
Oil cooling pipe and flash evaporation heat exchange;
In exhaust outlet of compressor mixture (oil and cold-producing medium), the mass percent of oil is adjustable between 0%-50%.
2. according to claim 1 a kind ofly have oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates, it is characterized in that: also comprise an air-breathing backheat branch road, flash evaporation port B is connected with the 3rd heat exchanger port A, 3rd heat exchanger port B is connected with one end of the second throttling arrangement, 3rd heat exchanger port C and the second heat exchanger port is connected, and the 3rd heat exchanger port D is connected with the air intake duct of compressor.
3. according to claim 1 a kind ofly have oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates, it is characterized in that: also comprise cross valve, described cross valve first end is connected with oil eliminator port B, second end is connected with one end of First Heat Exchanger, 3rd end is connected with the air entry of compressor, and the 4th end is connected with one end of the second heat exchanger.
4. according to claim 1 a kind of have oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates, it is characterized in that: also comprise oil cooler, one end of oil cooler is connected with oil eliminator port C, and the other end is connected with oil cooling pipe.
5. according to claim 1 a kind ofly have oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates, it is characterized in that: the pouring orifice of compressor and the air entry of compressor can be two, compressor independently mouth, preferably, the pouring orifice of compressor and the air entry of compressor are the same mouth of compressor.
6. according to claim 1 a kind of have oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates, it is characterized in that: preferably, oil cooling pipe and flash evaporation heat exchange mode are that oil cooling pipe passes flash evaporation.
7. according to claim 1 a kind ofly have oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates, it is characterized in that: also comprise the second oiling branch road, after oil cooling pipe and flash evaporation heat exchange, oil cooling pipe is except being connected with one end of the 3rd throttling arrangement, also be connected with one end of the 4th throttling arrangement, the other end of the 4th throttling arrangement is connected with the second pouring orifice of compressor, and preferably, it is same mouth that the second pouring orifice and tonifying Qi increase enthalpy mouth.
8. according to claim 1 a kind of have oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates, it is characterized in that: throttling arrangement can be capillary, electric expansion valve or heating power expansion valve.
9. according to claim 1 a kind of have oil cooling but compression cycle and tonifying Qi increase the refrigeration system that enthalpy circulates, it is characterized in that: compressor can be rotor-type compressor, scroll compressor or screw compressor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510444588.4A CN105042915A (en) | 2015-07-27 | 2015-07-27 | Refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation |
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| CN201510444588.4A CN105042915A (en) | 2015-07-27 | 2015-07-27 | Refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation |
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| CN105241105A (en) * | 2015-10-22 | 2016-01-13 | 湖南大学 | Refrigerating system based on oil cooling compression circulation |
| CN106052178A (en) * | 2016-05-29 | 2016-10-26 | 湖南大学 | Two-stage refrigerating circulation system with economizer and oil cooling compression |
| CN106196733A (en) * | 2016-08-29 | 2016-12-07 | 上海柯茂机械有限公司 | Integrating device for heat pump |
| CN106885387A (en) * | 2015-12-16 | 2017-06-23 | 上海日立电器有限公司 | A kind of air-conditioning system |
| CN107747826A (en) * | 2017-11-13 | 2018-03-02 | 珠海格力电器股份有限公司 | Air conditioning system |
| WO2018090894A1 (en) * | 2016-11-16 | 2018-05-24 | 艾默生环境优化技术(苏州)有限公司 | Compressor assembly and control method thereof and refrigerating/heating system |
| CN109307385A (en) * | 2018-08-31 | 2019-02-05 | 珠海格力电器股份有限公司 | Air conditioning system, compression oil supply device and control method thereof |
| CN111121342A (en) * | 2019-12-31 | 2020-05-08 | 青岛海信日立空调系统有限公司 | Heat pump system |
| CN112682986A (en) * | 2021-01-11 | 2021-04-20 | 珠海格力电器股份有限公司 | Flash type oil cooling system and control method |
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| CN107747826A (en) * | 2017-11-13 | 2018-03-02 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN107747826B (en) * | 2017-11-13 | 2023-10-13 | 珠海格力电器股份有限公司 | Air Conditioning System |
| CN109307385A (en) * | 2018-08-31 | 2019-02-05 | 珠海格力电器股份有限公司 | Air conditioning system, compression oil supply device and control method thereof |
| WO2020042457A1 (en) * | 2018-08-31 | 2020-03-05 | 珠海格力电器股份有限公司 | Air conditioning system, and compressed oil supply apparatus and control method therefor |
| CN109307385B (en) * | 2018-08-31 | 2023-11-24 | 珠海格力电器股份有限公司 | Air conditioning system, compression oil supply device and control method thereof |
| CN111121342A (en) * | 2019-12-31 | 2020-05-08 | 青岛海信日立空调系统有限公司 | Heat pump system |
| CN111121342B (en) * | 2019-12-31 | 2021-11-05 | 青岛海信日立空调系统有限公司 | Heat pump system |
| CN112682986A (en) * | 2021-01-11 | 2021-04-20 | 珠海格力电器股份有限公司 | Flash type oil cooling system and control method |
| CN112682986B (en) * | 2021-01-11 | 2024-03-22 | 珠海格力电器股份有限公司 | Flash type oil cooling system and control method |
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