CN108106045B - Air conditioner and refrigerator combined system capable of achieving centralized refrigeration and split cooling - Google Patents
Air conditioner and refrigerator combined system capable of achieving centralized refrigeration and split cooling Download PDFInfo
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- CN108106045B CN108106045B CN201810077275.3A CN201810077275A CN108106045B CN 108106045 B CN108106045 B CN 108106045B CN 201810077275 A CN201810077275 A CN 201810077275A CN 108106045 B CN108106045 B CN 108106045B
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- 238000001816 cooling Methods 0.000 title claims abstract description 39
- 238000005057 refrigeration Methods 0.000 title claims abstract description 30
- 239000003507 refrigerant Substances 0.000 claims abstract description 87
- 239000007788 liquid Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000001704 evaporation Methods 0.000 claims abstract description 20
- 230000008020 evaporation Effects 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 description 24
- 239000010687 lubricating oil Substances 0.000 description 16
- 239000003921 oil Substances 0.000 description 16
- 239000002826 coolant Substances 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
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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
- F25B13/00—Compression machines, plants or systems, with 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
- F25B41/00—Fluid-circulation 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a centralized refrigeration split cooling air conditioner and refrigerator combined system. The invention comprises the following steps: the system comprises a high-temperature compressor, an oil separator, a four-way valve, an air-cooled heat exchanger, a liquid reservoir, an evaporation condenser, a water-cooled heat exchanger, a gas-liquid separator, a cooling throttle valve, a heating throttle valve, a low-temperature compressor, a low-temperature throttle valve, a low-temperature heat exchanger, an independent refrigerator body, a secondary refrigerant pump, a fan coil, a water pump, a plurality of electromagnetic valves, a high-temperature refrigerant pipe, a low-temperature refrigerant pipe, a secondary refrigerant pipe and a water pipe. The invention can realize the energy supply to a plurality of rooms and a plurality of refrigerator bodies by using a set of refrigerating system, and can maintain the low-temperature environment in the refrigerator bodies while maintaining the proper environment temperature of the rooms.
Description
Technical Field
The invention relates to the field of refrigeration, in particular to a refrigeration system capable of realizing functions of an air conditioner and a refrigerator simultaneously by concentrated refrigeration.
Background
The traditional household refrigerators are independent, namely a set of refrigerating system is used for maintaining low-temperature use of one refrigerator, but in the actual operation process, the heat preservation effect of the refrigerator body is very good, so that the operation time of the refrigerating system is very high intermittently, namely the system cannot fully exert the effect due to low utilization efficiency of the system, meanwhile, contradiction exists in the system equipment type selection process, the quick cooling can be well realized due to overlarge refrigerating capacity selection, the initial investment cost is high, the cost can be reduced due to overlarge temperature fluctuation when the refrigerator stores food if the refrigerating capacity selection is too small, and the cost and price of the refrigerator are increased further if the variable-frequency equipment is adopted for adjusting the load.
Along with the development of urban apartments and office buildings, the standardization of the room pattern is also one of the development directions, and fixed electrical equipment such as a centralized refrigeration split cooling mode of a central air conditioner is placed at a fixed place, so that the central air conditioner system and a refrigerator system can be combined to seek effective measures for improving the refrigeration efficiency.
Disclosure of Invention
In view of the above, the invention provides a centralized refrigeration split cooling air conditioner and refrigerator combined system, which not only can meet the regulation of the environmental temperature of living space, but also can be used for maintaining the low-temperature environment of the refrigerator, and can realize the efficient operation of the refrigeration system through reasonable strategy distribution.
The invention provides a centralized refrigeration split cooling air conditioner and refrigerator combined system, which comprises a high-temperature-level refrigeration system and a low-temperature-level refrigeration system, wherein the high-temperature-level refrigeration system comprises a high-temperature compressor 1, an oil separator 2, a four-way valve 3, an air cooling heat exchanger 4, a liquid storage device 5, an evaporation condenser 6, a water cooling heat exchanger 7, a gas-liquid separator 8, a cooling throttle valve 9, a heating throttle valve 10, a solenoid valve one 20, a solenoid valve two 21, a solenoid valve three 22, a solenoid valve four 23, a solenoid valve five 24 and a high-temperature-level refrigerant pipe 30; the low-temperature-stage refrigeration system comprises a low-temperature compressor 11, an evaporative condenser 6, a low-temperature throttle valve 12 and a low-temperature heat exchanger 13; one end of the air-cooled heat exchanger 4 is connected with the four-way valve 3, the other end of the air-cooled heat exchanger 4 is connected with one end of a pipeline where the first electromagnetic valve 20 is positioned and one end of a pipeline where the second electromagnetic valve 21 is positioned, the second electromagnetic valve 21 is arranged on a pipeline between the air-cooled heat exchanger 4 and the evaporation condenser 6, the inlet of the liquid reservoir 5 is connected with the other end of the pipeline where the first electromagnetic valve 20 is positioned and one end of the pipeline where the fourth electromagnetic valve 23 is positioned, the outlet of the liquid reservoir 5 is connected with one end of the pipeline where the heat supply throttle valve 10 and the fifth electromagnetic valve 24 are positioned and one end of the pipeline where the cold supply throttle valve 9 and the third electromagnetic valve 22 are positioned, the other ends of the pipeline where the cold supply throttle valve 9 and the third electromagnetic valve 22 are positioned are arranged on a pipeline between the evaporation condenser and the third electromagnetic valve 22, and the other ends of the pipeline where the heat supply throttle valve 10 and the fifth electromagnetic valve 24 are positioned are arranged on a pipeline between the evaporation condenser 6 and the water-cooled heat exchanger 7; the refrigerating system comprises a refrigerating medium circulation loop consisting of a refrigerating medium pump 15, a low-temperature evaporator 13, a refrigerating medium conveying pipe 32 and independent refrigerator bodies 14, wherein a pipeline of the refrigerating medium pump 15 is connected with a refrigerating medium inlet of the low-temperature evaporator 13, a refrigerating medium outlet of the low-temperature evaporator 13 is connected with the refrigerating medium conveying pipe 32, and the refrigerating medium conveying pipes 32 are respectively connected with the independent refrigerator bodies 14; the water circulation loop comprises a water pump 17, a water-cooled heat exchanger 7, a conveying water pipe 33 and a fan coil 16, wherein a water path of the water pump 17 is connected with a water inlet of the water-cooled heat exchanger 7, a water outlet of the water-cooled heat exchanger 7 is connected with the conveying water pipe 33, and the conveying water pipes 33 are respectively connected with the fan coils 16 of all rooms;
The circulation process of the system in summer is as follows: the four-way valve 3 is regulated, the first electromagnetic valve 20 and the third electromagnetic valve 22 are opened, and the second electromagnetic valve 21, the fourth electromagnetic valve 23 and the fifth electromagnetic valve 24 are closed; the refrigerant in the high-temperature-level refrigerating system sequentially flows through the high-temperature compressor 1, the oil separator 2, the four-way valve 3, the air-cooled heat exchanger 4, the electromagnetic valve I20, the liquid storage device 5, the cold supply throttle valve 9, the electromagnetic valve III 22, the evaporative condenser 6, the water-cooled heat exchanger 7, the gas-liquid separator 8 and the four-way valve 3 and then enters the high-temperature compressor 1;
The cycle process of the system in winter is as follows: the four-way valve 3 is regulated, the first electromagnetic valve 20 and the third electromagnetic valve 22 are closed, and the second electromagnetic valve 21, the fourth electromagnetic valve 23 and the fifth electromagnetic valve 24 are opened; the refrigerant in the high-temperature-level refrigerating system sequentially flows through the high-temperature compressor 1, the oil separator 2, the four-way valve 3, the water-cooling heat exchanger 7, the solenoid valve IV 23, the liquid storage device 5, the heat supply throttle valve 10, the solenoid valve V24, the evaporative condenser 6, the solenoid valve II 21, the air-cooling heat exchanger 4, the four-way valve 3 and the gas-liquid separator 8, and then enters the high-temperature compressor 1.
For the sake of understanding, the present invention refers to the high temperature level refrigerant as refrigerant a and the low temperature level refrigerant as refrigerant B, and the two refrigerants may be the same working medium or different, and commonly used refrigerants include R600a, R134A, R404A, etc.
The basic working principle can be divided according to summer working conditions and winter working conditions; working conditions in summer: at this time, the system needs to cool the indoor environment. By adjusting the corresponding solenoid valve and four-way valve, the system cycle process is as follows:
The high-pressure refrigeration compressor compresses low-temperature low-pressure refrigerant A into high-temperature high-pressure superheated gas and then discharges the gas, lubricating oil is mixed in refrigerant A at the moment, and in order to avoid the lubricating oil from influencing the subsequent heat exchange of the system, the discharged superheated gas enters the oil separator to realize the separation of the lubricating oil and the refrigerant A gas; the separated lubricating oil is deposited at the bottom of the oil separator and then flows back to the compressor through an oil way, so that the normal operation of the compressor is ensured, and the overheated gas of the refrigerant A enters the air-cooled heat exchanger to exchange heat with outdoor air under the action of the four-way valve and becomes high-pressure refrigerant A liquid, and then flows into the liquid storage device; the liquid accumulator is used for storing the liquid of the refrigerant A, then the liquid of the refrigerant A is changed into a low-temperature low-pressure two-phase state after being throttled by the cold supply throttle valve, and then enters the evaporation condenser, and absorbs the heat in the refrigerant B of the low-temperature-level refrigerating system to be partially evaporated, and the dryness of the two-phase refrigerant A is increased at the moment; then the refrigerant A enters a water-cooling heat exchanger to continuously absorb the heat of the cooling water and further evaporate; the refrigerant A enters the gas-liquid separator under the action of the four-way valve, the refrigerant A liquid which is not completely evaporated is accumulated at the bottom, and the refrigerant gas returns to the high-temperature compressor, which is the circulation of the high-temperature refrigerating system.
The refrigerant B of the low-temperature refrigerating system is pressurized and heated under the action of the low-temperature compressor, then enters the evaporation condenser and releases heat to the refrigerant A, and then is condensed into high-pressure liquid, enters the low-temperature throttle valve, is changed into a two-phase state through the throttle pressure reduction action, absorbs the heat of the secondary refrigerant in the low-temperature evaporator and is evaporated, and finally is circulated back to the low-temperature compressor, so that the low-temperature refrigerating system circulates.
Under the action of the water pump, cooling water enters the water-cooling heat exchanger to realize cooling treatment, and then enters fan coils of all rooms through the water conveying pipe for cooling indoor environment.
Under the action of a secondary refrigerant pump, the secondary refrigerant enters the low-temperature evaporator to realize cooling treatment, and then enters each independent refrigerator body through a secondary refrigerant conveying pipe for maintaining the low temperature in the independent refrigerator body.
Winter working conditions: in which case the system needs to supply heat to the indoor environment. By adjusting the corresponding solenoid valve and four-way valve, the system cycle process is as follows: the high-pressure refrigeration compressor compresses low-temperature low-pressure refrigerant A into high-temperature high-pressure superheated gas and then discharges the gas, lubricating oil is mixed in refrigerant A at the moment, and in order to avoid the lubricating oil from influencing the subsequent heat exchange of the system, the discharged superheated gas enters the oil separator to realize the separation of the lubricating oil and the refrigerant A gas; the separated lubricating oil is deposited at the bottom of the oil separator and then flows back to the compressor through an oil way, so that the normal operation of the compressor is ensured, and the overheated gas of the refrigerant A enters the water-cooled heat exchanger to exchange heat with water under the action of the four-way valve and becomes high-pressure refrigerant A liquid, and then flows into the liquid storage device; the liquid accumulator is used for storing the liquid of the refrigerant A, then the liquid of the refrigerant A is changed into a low-temperature low-pressure two-phase state after being throttled by the heat supply throttle valve, and then enters the evaporation condenser, and absorbs the heat in the refrigerant B of the low-temperature-level refrigerating system to be partially evaporated, and the dryness of the two-phase refrigerant A is increased at the moment; then the refrigerant A enters an air-cooled heat exchanger to continuously absorb the heat of the outside air and further evaporate; the refrigerant A enters the gas-liquid separator under the action of the four-way valve, the refrigerant A liquid which is not completely evaporated is accumulated at the bottom, and the refrigerant gas returns to the high-temperature compressor, which is the circulation of the high-temperature refrigerating system.
The refrigerant B of the low-temperature refrigerating system is pressurized and heated under the action of the low-temperature compressor, then enters the evaporation condenser and releases heat to the refrigerant A, and then is condensed into high-pressure liquid, enters the low-temperature throttle valve, is changed into a two-phase state through the throttle pressure reduction action, absorbs the heat of the secondary refrigerant in the low-temperature evaporator and is evaporated, and finally is circulated back to the low-temperature compressor, so that the low-temperature refrigerating system circulates. Under the action of the water pump, heating water enters the water-cooling heat exchanger to realize heating treatment, and then enters fan coils of all rooms through the water conveying pipe for heating indoor environment. Under the action of a secondary refrigerant pump, the secondary refrigerant enters the low-temperature evaporator to realize cooling treatment, and then enters each independent refrigerator body through a secondary refrigerant conveying pipe for maintaining the low temperature in the independent refrigerator body.
The invention utilizes a set of refrigerating system to realize the central air conditioning function and space refrigeration of a plurality of refrigerators, namely, a user side only needs to be provided with the refrigerator body of the refrigerator without being provided with related independent refrigerating equipment, and the refrigeration capacity required by cooling the refrigerator is uniformly provided by the concentrated refrigerating system, namely, the mode that one set of refrigerating system supplies cold for the plurality of refrigerators is realized, the optimal control and matching of the refrigerating capacity can be realized, and the energy utilization efficiency is improved.
Drawings
Fig. 1 is a schematic diagram of a combined system of a centralized refrigeration split cooling air conditioner and a refrigerator.
Detailed Description
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the drawings and embodiments.
Referring to fig. 1, the invention provides a centralized refrigeration split cooling air conditioner and refrigerator combined system, which comprises a high-temperature-level refrigeration system and a low-temperature-level refrigeration system, wherein the high-temperature-level refrigeration system comprises a high-temperature compressor 1, an oil separator 2, a four-way valve 3, an air cooling heat exchanger 4, a liquid storage device 5, an evaporation condenser 6, a water cooling heat exchanger 7, a gas-liquid separator 8, a cooling throttle valve 9, a heating throttle valve 10, a solenoid valve one 20, a solenoid valve two 21, a solenoid valve three 22, a solenoid valve four 23, a solenoid valve five 24 and a high-temperature-level refrigerant pipe 30; the low-temperature-stage refrigeration system comprises a low-temperature compressor 11, an evaporative condenser 6, a low-temperature throttle valve 12 and a low-temperature heat exchanger 13; one end of the air-cooled heat exchanger 4 is connected with the four-way valve 3, the other end of the air-cooled heat exchanger 4 is connected with one end of a pipeline where the first electromagnetic valve 20 is positioned and one end of a pipeline where the second electromagnetic valve 21 is positioned, the second electromagnetic valve 21 is arranged on a pipeline between the air-cooled heat exchanger 4 and the evaporation condenser 6, the inlet of the liquid reservoir 5 is connected with the other end of the pipeline where the first electromagnetic valve 20 is positioned and one end of the pipeline where the fourth electromagnetic valve 23 is positioned, the outlet of the liquid reservoir 5 is connected with one end of the pipeline where the heat supply throttle valve 10 and the fifth electromagnetic valve 24 are positioned and one end of the pipeline where the cold supply throttle valve 9 and the third electromagnetic valve 22 are positioned, the other ends of the pipeline where the cold supply throttle valve 9 and the third electromagnetic valve 22 are positioned are arranged on a pipeline between the evaporation condenser and the third electromagnetic valve 22, and the other ends of the pipeline where the heat supply throttle valve 10 and the fifth electromagnetic valve 24 are positioned are arranged on a pipeline between the evaporation condenser 6 and the water-cooled heat exchanger 7; the refrigerating system comprises a refrigerating medium circulation loop consisting of a refrigerating medium pump 15, a low-temperature evaporator 13, a refrigerating medium conveying pipe 32 and independent refrigerator bodies 14, wherein a pipeline of the refrigerating medium pump 15 is connected with a refrigerating medium inlet of the low-temperature evaporator 13, a refrigerating medium outlet of the low-temperature evaporator 13 is connected with the refrigerating medium conveying pipe 32, and the refrigerating medium conveying pipes 32 are respectively connected with the independent refrigerator bodies 14; the water circulation system comprises a water circulation loop consisting of a water pump 17, a water-cooled heat exchanger 7, a conveying water pipe 33 and fan coils 16, wherein a water path of the water pump 17 is connected with a water inlet of the water-cooled heat exchanger 7, a water outlet of the water-cooled heat exchanger 7 is connected with the conveying water pipe 33, and the conveying water pipes 33 are respectively connected with the fan coils 16 of each room.
The basic working principle can be divided according to summer working conditions and winter working conditions;
summer conditions (one)
At this time, the system needs to cool the indoor environment. By adjusting the four-way valve 3, the solenoid valve I20 and the solenoid valve III 22 are opened, the solenoid valve II 21, the solenoid valve IV 23 and the solenoid valve V24 are closed, and the system circulation process is as follows:
The high-pressure refrigeration compressor 1 compresses a low-temperature low-pressure refrigerant A into high-temperature high-pressure superheated gas and discharges the gas, lubricating oil is mixed in the refrigerant A at the moment, and in order to avoid the influence of the lubricating oil on the subsequent heat exchange of the system, the discharged superheated gas enters the oil separator 2 to realize the separation of the lubricating oil and the refrigerant A gas; the separated lubricating oil is deposited at the bottom of the oil separator 2 and then flows back to the high-pressure compressor 1 through an oil way 34 to ensure that the high-pressure compressor 1 works normally, and the overheated gas of the refrigerant A enters the air-cooled heat exchanger 4 to exchange heat with outdoor air under the action of the four-way valve 3 and becomes high-pressure refrigerant A liquid, and then flows into the liquid reservoir 5; the accumulator 5 is a part for storing the liquid of the refrigerant a, and then the liquid of the refrigerant a is changed into a low-temperature low-pressure two-phase state after being throttled by the cold supply throttle valve 9, and then enters the evaporation condenser 6, and absorbs the heat in the refrigerant B of the low-temperature-stage refrigeration system to be partially evaporated, and at the moment, the dryness of the two-phase refrigerant a is increased; refrigerant A then enters the water-cooled heat exchanger 7 to absorb the heat of the cooling water and evaporate further; the refrigerant a enters the gas-liquid separator 8 under the action of the four-way valve 3, the refrigerant a liquid which is not completely evaporated is accumulated at the bottom of the gas-liquid separator 8, and the refrigerant gas returns to the high-temperature compressor 1, which is a high-temperature refrigerating system cycle.
The refrigerant B of the low-temperature refrigerating system is pressurized and heated under the action of the low-temperature compressor 11, then enters the evaporation condenser 6 and releases heat to the refrigerant A, and then is condensed into high-pressure liquid, enters the low-temperature throttle valve 12, becomes a two-phase state under the action of throttle and depressurization, absorbs the heat of the secondary refrigerant in the low-temperature evaporator 13 and evaporates, finally circulates back to the low-temperature compressor 11, and is the circulation of the low-temperature refrigerating system.
Under the action of the water pump 17, the cooling water enters the water-cooling heat exchanger 7 to realize cooling treatment, and then enters the fan coils 16 of each room through the conveying water pipe 33 for cooling the indoor environment.
Under the action of the coolant pump 15, the coolant enters the low-temperature evaporator 13 to realize cooling treatment, and then enters each independent refrigerator body 14 through the coolant conveying pipe 32 for maintaining the low temperature in the independent refrigerator bodies 14.
(II) winter conditions
In which case the system needs to supply heat to the indoor environment. By adjusting the four-way valve 3, the solenoid valve I20 and the solenoid valve III 22 are closed, the solenoid valve II 21, the solenoid valve IV 23 and the solenoid valve V24 are opened, and the system circulation process is as follows:
The high-pressure refrigeration compressor 1 compresses a low-temperature low-pressure refrigerant A into high-temperature high-pressure superheated gas and discharges the gas, lubricating oil is mixed in the refrigerant A at the moment, and in order to avoid the influence of the lubricating oil on the subsequent heat exchange of the system, the discharged superheated gas enters the oil separator 2 to realize the separation of the lubricating oil and the refrigerant A gas; the separated lubricating oil is deposited at the bottom of the oil separator 2 and then flows back to the high-pressure compressor 1 through an oil way 34 to ensure that the high-pressure compressor 1 works normally, and the overheated gas of the refrigerant A enters the water-cooled heat exchanger 7 to exchange heat with water under the action of the four-way valve 3 and becomes high-pressure refrigerant A liquid, and then flows into the liquid reservoir 5; the accumulator 5 is a part for storing the liquid of the refrigerant a, and then the liquid of the refrigerant a is changed into a low-temperature low-pressure two-phase state after being throttled by the heat supply throttle valve 10, and then enters the evaporation condenser 6, and absorbs the heat in the refrigerant B of the low-temperature-level refrigeration system to be partially evaporated, and at the moment, the dryness of the two-phase refrigerant a is increased; then the refrigerant A enters the air-cooled heat exchanger 4 to continuously absorb the heat of the outside air and further evaporate; the refrigerant a enters the gas-liquid separator 8 under the action of the four-way valve 3, the refrigerant a liquid which is not completely evaporated is accumulated at the bottom of the gas-liquid separator 8, and the refrigerant gas returns to the high-temperature compressor 1, which is a high-temperature refrigerating system cycle.
The refrigerant B of the low-temperature refrigerating system is pressurized and heated under the action of the low-temperature compressor 11, then enters the evaporation condenser 6 and releases heat to the refrigerant A, and then is condensed into high-pressure liquid, enters the low-temperature throttle valve 12, becomes a two-phase state under the action of throttle and depressurization, absorbs the heat of the secondary refrigerant in the low-temperature evaporator 13 and evaporates, finally circulates back to the low-temperature compressor 11, and is the circulation of the low-temperature refrigerating system.
Under the action of the water pump 17, the heating water enters the water-cooling evaporator 7 to realize heating treatment, and then enters the fan coils 16 of each room through the conveying water pipe 33 for heating in the indoor environment.
Under the action of the coolant pump 15, the coolant enters the low-temperature evaporator 13 to realize cooling treatment, and then enters each independent refrigerator body 14 through the coolant conveying pipe 32 for maintaining the low temperature in the independent refrigerator bodies 14.
The connection mode between the components can be clearly obtained according to the circulation process.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (1)
1. A centralized refrigeration split cooling air conditioner and refrigerator combined system is characterized in that: the high-temperature-level refrigerating system comprises a high-temperature compressor (1), an oil separator (2), a four-way valve (3), an air-cooled heat exchanger (4), a liquid storage device (5), an evaporative condenser (6), a water-cooled heat exchanger (7), a gas-liquid separator (8), a cooling throttle valve (9), a heating throttle valve (10), a first electromagnetic valve (20), a second electromagnetic valve (21), a third electromagnetic valve (22), a fourth electromagnetic valve (23), a fifth electromagnetic valve (24) and a high-temperature-level refrigerant pipe (30); the low-temperature-level refrigerating system comprises a low-temperature compressor (11), an evaporative condenser (6), a low-temperature throttle valve (12) and a low-temperature heat exchanger (13); one end of the air-cooled heat exchanger (4) is connected with the four-way valve (3), the other end of the air-cooled heat exchanger is connected with one end of a pipeline where the first electromagnetic valve (20) is located and one end of a pipeline where the second electromagnetic valve (21) is located, the second electromagnetic valve (21) is arranged on a pipeline between the air-cooled heat exchanger (4) and the evaporation condenser (6), the inlet of the liquid storage device (5) is connected with the other end of the pipeline where the first electromagnetic valve (20) is located and one end of the pipeline where the fourth electromagnetic valve (23) is located, the outlet of the liquid storage device (5) is connected with one end of the pipeline where the heat supply throttle valve (10) and the fifth electromagnetic valve (24) are located and one end of the pipeline where the cold supply throttle valve (9) and the third electromagnetic valve (22) are located, the other end of the pipeline where the cold supply throttle valve (9) and the third electromagnetic valve (22) are located is arranged on a pipeline between the evaporation condenser and the third electromagnetic valve (22), and the other end of the pipeline where the heat supply throttle valve (10) and the fifth electromagnetic valve (24) are located is arranged on a pipeline between the evaporation condenser (6) and the water-cooled heat exchanger (7); the refrigerating system comprises a refrigerating medium circulation loop consisting of a refrigerating medium pump (15), a low-temperature evaporator (13), a refrigerating medium conveying pipe (32) and independent refrigerator bodies (14), wherein a pipeline of the refrigerating medium pump (15) is connected with a refrigerating medium inlet of the low-temperature evaporator (13), a refrigerating medium outlet of the low-temperature evaporator (13) is connected with the refrigerating medium conveying pipe (32), and the refrigerating medium conveying pipes (32) are respectively connected with the independent refrigerator bodies (14); the water circulation system comprises a water circulation loop consisting of a water pump (17), a water-cooling heat exchanger (7), a conveying water pipe (33) and fan coils (16), wherein a water path of the water pump (17) is connected with a water inlet of the water-cooling heat exchanger (7), a water outlet of the water-cooling heat exchanger (7) is connected with the conveying water pipe (33), and the conveying water pipe (33) is respectively connected with the fan coils (16) of each room;
The circulation process of the system in summer is as follows: the four-way valve (3) is regulated, the first electromagnetic valve (20) and the third electromagnetic valve (22) are opened, and the second electromagnetic valve (21), the fourth electromagnetic valve (23) and the fifth electromagnetic valve (24) are closed; the refrigerant in the high-temperature-level refrigerating system sequentially flows through the high-temperature compressor (1), the oil separator (2), the four-way valve (3), the air-cooled heat exchanger (4), the first electromagnetic valve (20), the liquid storage device (5), the cold supply throttle valve (9), the third electromagnetic valve (22), the evaporative condenser (6), the water-cooled heat exchanger (7), the gas-liquid separator (8) and the four-way valve (3) and then enters the high-temperature compressor (1);
The cycle process of the system in winter is as follows: the four-way valve (3) is regulated, the first electromagnetic valve (20) and the third electromagnetic valve (22) are closed, and the second electromagnetic valve (21), the fourth electromagnetic valve (23) and the fifth electromagnetic valve (24) are opened; the refrigerant in the high-temperature-level refrigerating system sequentially flows through the high-temperature compressor (1), the oil separator (2), the four-way valve (3), the water-cooling heat exchanger (7), the electromagnetic valve IV (23), the liquid reservoir (5), the heat supply throttle valve (10), the electromagnetic valve V (24), the evaporative condenser (6), the electromagnetic valve II (21), the air-cooling heat exchanger (4), the four-way valve (3) and the gas-liquid separator (8) and then enters the high-temperature compressor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077275.3A CN108106045B (en) | 2018-01-26 | 2018-01-26 | Air conditioner and refrigerator combined system capable of achieving centralized refrigeration and split cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077275.3A CN108106045B (en) | 2018-01-26 | 2018-01-26 | Air conditioner and refrigerator combined system capable of achieving centralized refrigeration and split cooling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108106045A CN108106045A (en) | 2018-06-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109269169A (en) * | 2018-11-02 | 2019-01-25 | 广州冰泉制冷设备有限责任公司 | A kind of intelligence walnut cake ice maker |
| CN110500686B (en) * | 2019-09-05 | 2024-08-02 | 天津商业大学 | Multi-temperature-zone multi-combined supply system |
| CN110926046B (en) * | 2019-11-29 | 2023-08-29 | 广东金舵制冷设备有限公司 | Refrigerating device |
| CN111629571B (en) * | 2020-06-30 | 2021-08-31 | 北京航空航天大学 | Overall efficient cooling system of high-power-density cabinet |
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