Cold storage type fluorine pump air conditioning system

Abstract

The invention discloses a cold accumulation type fluorine pump air conditioning system, which relates to the technical field of air conditioners and comprises an indoor unit part, an outdoor unit part, a fluorine pump, an ice slurry preparation part and an ice slurry cold supply part, the indoor unit part is communicated with the outdoor unit part to form a compression type refrigeration cycle or a compression type heating cycle; the outdoor unit part is communicated with the ice slurry preparation part to form ice slurry preparation circulation; the fluorine pump, the ice slurry cooling part and the indoor unit part are communicated to form ice slurry cooling fluorine pump circulation; the ice slurry cooling part and the indoor unit part are communicated to form ice slurry cooling natural circulation; due to the arrangement of the ice slurry preparing part and the ice slurry cooling part, the ice slurry preparing part can be used for preparing the ice slurry in the electricity consumption valley period, the ice slurry cooling part can be used for outputting the cooling capacity of the prepared ice slurry in the electricity consumption peak period, the energy consumption of the air conditioning system in the electricity consumption peak period is reduced, and power peak regulation is assisted.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning, and in particular to a cold storage type fluorine pump air conditioning system. Background Art

[0002] For buildings that require cooling all year round, such as data centers, fluorine pump air conditioners are often used to maintain indoor temperature and humidity. Traditional fluorine pump air conditioners generally use a composite air conditioning system of a fluorine pump and a compressor. In summer and other times when the outdoor air temperature is high, the compressor is used to start the air conditioner. In winter and other times when the outdoor temperature is low, the fluorine pump is used to drive the air conditioner. When the fluorine pump drives the air conditioner, the compressor is in a stopped state, and the lower outdoor temperature is used to maintain the indoor temperature and humidity. However, traditional fluorine pump air conditioners do not have the ability to store cold. In summer when the ambient temperature is high, a compressor is needed to maintain the indoor temperature and humidity even during peak electricity consumption periods.

[0003] Therefore, people are in urgent need of a cold storage type fluorine pump air conditioning system with cold storage capability to reduce energy consumption during peak hours of electricity consumption. Summary of the invention

[0004] The purpose of the present invention is to provide a cold storage type fluorine pump air conditioning system to solve the problems existing in the above-mentioned prior art. Cold is stored during the low electricity consumption period, and the cold storage is used to output cold energy during the peak electricity consumption period, thereby reducing the energy consumption of the air conditioning system during the peak electricity consumption period and facilitating electricity peak regulation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following scheme: The present invention provides a cold storage type fluorine pump air conditioning system, comprising an indoor unit part, an outdoor unit part, a fluorine pump, an ice slurry making part and an ice slurry cooling part; the indoor unit part is connected with the outdoor unit part to form a compression refrigeration cycle or a compression heating cycle; the outdoor unit part is connected with the ice slurry making part to form an ice slurry making cycle, the ice slurry making part comprises an ice slurry generator, an ice slurry storage tank and an ice slurry pump, the ice slurry generator is connected with the two refrigerant ports of the outdoor unit part through a refrigerant inlet and a refrigerant outlet respectively, the cold water inlet of the ice slurry generator is connected with the ice slurry storage tank through the ice slurry pump, and the ice slurry outlet of the ice slurry generator is connected with the ice slurry storage tank; the fluorine pump, the ice The ice slurry cooling part and the indoor unit part are connected to form an ice slurry cooling and fluorine pump circulation, the ice slurry cooling part includes an ice slurry heat exchanger, the ice slurry inlet of the ice slurry heat exchanger is connected to the ice slurry storage tank through the ice slurry pump, the cold water outlet of the ice slurry heat exchanger is connected to the ice slurry storage tank, the refrigerant inlet of the ice slurry heat exchanger is connected to a refrigerant port of the indoor unit part, and the refrigerant outlet of the ice slurry heat exchanger is connected to another refrigerant port of the indoor unit part through the fluorine pump; the ice slurry cooling part and the indoor unit part are connected to form an ice slurry cooling natural cycle, the refrigerant inlet of the ice slurry heat exchanger is connected to a refrigerant port of the indoor unit part, and the refrigerant outlet of the ice slurry heat exchanger is connected to another refrigerant port of the indoor unit part.

[0006] Preferably, the outdoor unit part includes a four-way reversing valve for switching the flow direction of the refrigerant, a compressor and an air-cooled condenser, and the refrigerant inlet of the compressor, the refrigerant outlet of the compressor, the refrigerant port of the indoor unit part and the refrigerant port of the air-cooled condenser are all connected to the four-way reversing valve.

[0007] Preferably, the air-cooled condenser comprises a heat exchange coil and a fan, a refrigerant flows in the heat exchange coil, and an airflow direction of the fan is arranged toward the heat exchange coil.

[0008] Preferably, the indoor unit part includes at least one indoor unit and a number of first expansion valves matching the indoor units, the two refrigerant ports of the indoor unit are respectively connected to the four-way reversing valve and the refrigerant port of the air-cooled condenser away from the four-way reversing valve, and the first expansion valve is arranged on the connecting pipe between the indoor unit and the air-cooled condenser.

[0009] Preferably, the cold storage type fluorine pump air-conditioning system also includes a first refrigerant bypass pipeline and a second refrigerant bypass pipeline, one end of the refrigerant bypass pipeline is connected to a refrigerant port of the outdoor unit part, and the other end is respectively connected to another refrigerant port of the outdoor unit part and a refrigerant port of the indoor unit part, the fluorine pump is arranged in parallel on the branch pipeline connecting the first refrigerant bypass pipeline and the indoor unit part, the ice slurry generator and the ice slurry heat exchanger are respectively arranged in parallel on the first refrigerant bypass pipeline; the second refrigerant bypass pipeline is arranged in parallel with the outdoor unit part; the cold storage type fluorine pump air-conditioning system includes a valve group for switching the cold storage type fluorine pump air-conditioning system to a compression refrigeration cycle mode or a compression heating cycle mode, an ice slurry production cycle mode, an ice slurry cooling fluorine pump cycle mode, a compression refrigeration cycle and an ice slurry production cycle jointly opened mode, and an ice slurry cooling natural cycle mode.

[0010] Preferably, the water outlet of the ice slurry storage tank is connected to the ice slurry circulation pipeline through the ice slurry pump, the water outlet of the ice slurry circulation pipeline is connected to the water inlet of the ice slurry storage tank, the ice slurry generator and the ice slurry heat exchanger are respectively arranged in parallel on the ice slurry circulation pipeline, and the ice slurry circulation pipeline, the parallel pipeline between the ice slurry generator and the ice slurry circulation pipeline, and the parallel pipeline between the ice slurry heat exchanger and the ice slurry circulation pipeline are all provided with valves for switching the ice slurry circulation pipeline to be connected with the ice slurry generator, or the ice slurry circulation pipeline to be connected with the ice slurry heat exchanger.

[0011] Preferably, the water outlet of the ice slurry storage tank is arranged on one side of the bottom, and the water inlet of the ice slurry storage tank is located in the middle position of the bottom of the ice slurry storage tank. A water inlet pipe is arranged at the water inlet of the ice slurry storage tank, and the water inlet pipe extends into the ice slurry storage tank. The extended end of the water inlet pipe is located in the middle position of the top of the inner cavity of the ice slurry storage tank.

[0012] Preferably, a laser sensor for detecting whether the ice slurry is full is provided at the bottom of the inner peripheral wall of the ice slurry storage tank.

[0013] Preferably, the ice slurry generator includes a cold water channel and a refrigerant channel, the refrigerant channel is sleeved on the outer peripheral side of the cold water channel, the inner cavity of the cold water channel is cylindrical, a rotating shaft is coaxially arranged in the cold water channel, the rotating shaft is connected to a driving device, and a scraper for scraping off ice crystals condensed on the inner wall of the cold water channel is arranged on the peripheral side of the rotating shaft.

[0014] Preferably, a second expansion valve is provided at the refrigerant inlet of the ice slurry generator.

[0015] Compared with the prior art, the present invention mainly achieves the following technical effects:

[0016] Due to the setting of the ice slurry preparation part and the ice slurry cooling part, the ice slurry preparation part can be used to prepare ice slurry during the low electricity consumption period, and the ice slurry cooling part can be used to output the cooling capacity of the prepared ice slurry during the peak electricity consumption period, thereby saving the energy consumption of the air-conditioning system during the peak electricity consumption period and assisting in power peak regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a system diagram of the cold storage type fluorine pump air conditioning system in the embodiment of the present invention;

[0019] Figure 2 is a refrigerant flow diagram in a compression refrigeration cycle mode in an embodiment of the present invention;

[0020] Figure 3 is a refrigerant flow diagram in a compression heating cycle mode in an embodiment of the present invention;

[0021] Figure 4 It is a refrigerant flow diagram in the ice slurry preparation cycle mode in an embodiment of the present invention;

[0022] Figure 5 It is a refrigerant flow diagram in a mode where a compression refrigeration cycle and an ice slurry production cycle are both turned on in an embodiment of the present invention;

[0023] Figure 6 It is a refrigerant flow diagram in the ice slurry cooling fluorine pump circulation mode in an embodiment of the present invention;

[0024] Figure 7 It is a refrigerant flow diagram in the ice slurry cooling natural circulation mode in an embodiment of the present invention;

[0025] Figure 8 It is a structural schematic diagram of an ice slurry generator in an embodiment of the present invention;

[0026] Fig. 9 It is a structural schematic diagram of an ice slurry storage tank in an embodiment of the present invention;

[0027] Among them, 101, fluorine pump; 200, indoor unit part; 201, first expansion valve; 202, indoor unit; 300, outdoor unit part; 301, four-way reversing valve; 302, compressor; 303, air-cooled condenser; 400, ice slurry cold storage part; 401, second expansion valve; 402, ice slurry generator; 4021, cold water channel; 4022, refrigerant channel; 4023, scraper; 4024, rotating shaft; 403, ice slurry heat exchanger; 404, ice slurry storage tank; 4041, water inlet pipe; 4042, laser sensor; 405, ice Slurry pump; 501, valve one; 502, valve two; 503, valve three; 504, valve four; 505, valve five; 506, valve six; 507, valve seven; 508, valve eight; 509, valve nine; 510, valve ten; 511, valve eleven; 512, valve twelve; 513, valve thirteen; 514, valve fourteen; 515, valve fifteen; 516, valve sixteen; 601, first valve; 602, second valve; 603, third valve; 604, fourth valve; 605, fifth valve; 606, sixth valve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The purpose of the present invention is to provide a cold storage type fluorine pump air conditioning system to solve the problems existing in the prior art. Cold is stored during the low electricity consumption period, and the cold storage is used to output cold energy during the peak electricity consumption period, thereby reducing the energy consumption of the air conditioning system during the peak electricity consumption period and facilitating electricity peak regulation.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Please refer to Figures 1 to 9As shown, a cold storage type fluorine pump air conditioning system is provided, including an indoor unit part 200, an outdoor unit part 300, a fluorine pump 101, an ice slurry preparation part and an ice slurry cooling part, the ice slurry preparation part and the ice slurry cooling part can be collectively referred to as an ice slurry cooling storage part 400; the indoor unit part 200, the outdoor unit part 300, the fluorine pump 101, the ice slurry preparation part and the ice slurry cooling part can be combined to obtain the following different cycles: the indoor unit part 200 is connected to the outdoor unit part 300 to form a compression refrigeration cycle or a compression heating cycle, this The cycle is a conventional air conditioning cooling and heating cycle; the outdoor unit part 300 is connected to the ice slurry preparation part to form an ice slurry preparation cycle, and the ice slurry preparation part includes an ice slurry generator 402, an ice slurry storage tank 404 and an ice slurry pump 405. The ice slurry generator 402 is connected to the two refrigerant ports of the outdoor unit part 300 through the refrigerant inlet and the refrigerant outlet, respectively. The cold water inlet of the ice slurry generator 402 is connected to the ice slurry storage tank 404 through the ice slurry pump 405, and the ice slurry outlet of the ice slurry generator 402 is connected to the ice slurry storage tank 404. This cycle During the off-peak period of electricity consumption, ice slurry can be produced by using the ice slurry production part; the fluorine pump 101, the ice slurry cooling part and the indoor unit part 200 are connected to form an ice slurry cooling fluorine pump cycle, and the ice slurry cooling part includes an ice slurry heat exchanger 403, the ice slurry inlet of the ice slurry heat exchanger 403 is connected to the ice slurry storage tank 404 through the ice slurry pump 405, the cold water outlet of the ice slurry heat exchanger 403 is connected to the ice slurry storage tank 404, the refrigerant inlet of the ice slurry heat exchanger 403 is connected to a refrigerant port of the indoor unit part 200, and the refrigerant outlet of the ice slurry heat exchanger 403 is connected to the refrigerant port of the indoor unit part 200. The fluorine pump 101 is connected to another refrigerant port of the indoor unit part 200. This cycle can use the ice slurry cooling part to output the cooling capacity of the prepared ice slurry during peak electricity consumption periods, thereby reducing the energy consumption of the air-conditioning system during peak electricity consumption periods and assisting in power peak regulation. The ice slurry cooling part and the indoor unit part 200 are connected to form a natural cycle of ice slurry cooling, the refrigerant inlet of the ice slurry heat exchanger 403 is connected to a refrigerant port of the indoor unit part 200, and the refrigerant outlet of the ice slurry heat exchanger 403 is connected to another refrigerant port of the indoor unit part 200.

[0032] The outdoor unit part 300 includes a four-way reversing valve 301, a compressor 302 and an air-cooled condenser 303. The refrigerant inlet of the compressor 302, the refrigerant outlet of the compressor 302, the refrigerant port of the indoor unit part 200 and the refrigerant port of the air-cooled condenser 303 are all connected to the four-way reversing valve 301. The four-way reversing valve 301 is used to switch whether the refrigerant flowing out of the compressor 302 flows directly to the air-cooled condenser 303 or directly to the indoor unit part 200.

[0033] The air-cooled condenser 303 includes a heat exchange coil and a fan. The heat exchange coil is connected to the four-way reversing valve 301 for circulating the refrigerant. The airflow direction of the fan is set toward the heat exchange coil, so that forced convection is formed on the surface of the heat exchange coil, thereby improving the heat exchange effect of the heat exchange coil. In this embodiment, the heat exchange coil is located on the suction side of the fan, that is, the airflow first flows through the heat exchange coil and then through the fan.

[0034] The indoor unit part 200 includes at least one indoor unit 202 and a number of first expansion valves 201 that matches the indoor units 202. The two refrigerant ports of the indoor unit part 200 are respectively connected to the four-way reversing valve 301 and the refrigerant port of the air-cooled condenser 303 away from the four-way reversing valve 301. The first expansion valve 201 is arranged on the connecting pipeline between the indoor unit 202 and the air-cooled condenser 303; when multiple indoor units 202 are arranged, the multiple indoor units 202 are arranged in parallel.

[0035] The compression refrigeration cycle, the ice slurry preparation cycle and the ice slurry cooling fluorine pump cycle can be independently arranged or coupled. When coupled, the cold storage fluorine pump air conditioning system also includes a first refrigerant bypass pipeline and a second refrigerant bypass pipeline. One end of the refrigerant bypass pipeline is connected to a refrigerant port of the outdoor unit part 300, and the other end is respectively connected to another refrigerant port of the outdoor unit part 300 and a refrigerant port of the indoor unit part 200. A fluorine pump 101 is arranged in parallel on the branch pipeline connecting the first refrigerant bypass pipeline and the indoor unit part 200. The ice slurry generator 402 and the ice slurry heat exchanger 403 are respectively arranged in parallel on the first refrigerant bypass pipeline; the second refrigerant bypass pipeline is arranged in parallel with the outdoor unit part 300; the cold storage fluorine pump air conditioning system also includes a first refrigerant bypass pipeline and a second refrigerant bypass pipeline. The pump air conditioning system includes a valve group, which includes several valves, namely valve one 501, valve two 502, valve three 503, valve four 504, valve five 505, valve six 506, valve seven 507, valve eight 508, valve nine 509, valve ten 510, valve eleven 511, valve twelve 512, valve thirteen 513, valve fourteen 514, valve fifteen 515, and valve sixteen 516. The valves can be solenoid valves. Several valves are controlled by opening and closing to switch the cold storage type fluorine pump air conditioning system to a compression refrigeration cycle mode or a compression heating cycle mode, an ice slurry preparation cycle mode, an ice slurry cooling fluorine pump cycle mode, a compression refrigeration cycle and an ice slurry preparation cycle co-opening mode, and an ice slurry cooling natural cycle mode.

[0036] The water outlet of the ice slurry storage tank 404 is connected to the ice slurry circulation pipeline through the ice slurry pump 405, and the water outlet of the ice slurry circulation pipeline is connected to the water inlet of the ice slurry storage tank 404. The ice slurry generator 402 and the ice slurry heat exchanger 403 are respectively arranged in parallel on the ice slurry circulation pipeline. The ice slurry circulation pipeline, the parallel pipeline between the ice slurry generator 402 and the ice slurry circulation pipeline, and the parallel pipeline between the ice slurry heat exchanger 403 and the ice slurry circulation pipeline are provided with a valve group, including a first valve 601, a second valve 602, a third valve 603, a fourth valve 604, a fifth valve 605 and a sixth valve 606. The valve can be a solenoid valve to switch the ice slurry circulation pipeline to be connected with the ice slurry generator 402, or the ice slurry circulation pipeline to be connected with the ice slurry heat exchanger 403.

[0037] Due to the mixed state of ice slurry and cold water, the cold water is located below the ice slurry, so the water outlet of the ice slurry storage tank 404 is set on one side of the bottom, and the water inlet of the ice slurry storage tank 404 is located in the middle position of the bottom of the ice slurry storage tank 404. A water inlet pipe 4041 is provided at the water inlet of the ice slurry storage tank 404, and the water inlet pipe 4041 extends into the ice slurry storage tank 404, and the extended end of the water inlet pipe 4041 is located in the middle position of the top of the inner cavity of the ice slurry storage tank 404.

[0038] In order to prevent the ice slurry from being produced after it is full, a laser sensor 4042 for detecting whether the ice slurry is full is provided at the bottom of the inner wall of the ice slurry storage tank 404. When the bottom of the ice slurry pile is located between the transmitter and the receiver of the laser sensor 4042, the ice slurry will affect the normal path of the laser, and the receiver will not be able to accurately receive the laser emitted by the transmitter. At this time, the ice slurry is determined to be full, and the ice slurry generator 402 can be stopped to continue producing ice slurry.

[0039] The ice slurry generator 402 specifically includes a cold water channel 4021 and a refrigerant channel 4022. The refrigerant channel 4022 is sleeved on the outer peripheral side of the cold water channel 4021. The inner cavity of the cold water channel 4021 is cylindrical. A rotating shaft 4024 is coaxially arranged in the cold water channel 4021. The rotating shaft 4024 is connected to a driving device. A scraper 4023 for scraping off ice crystals condensed on the inner wall surface of the cold water channel 4021 is arranged on the peripheral side of the rotating shaft 4024. One end of the scraper 4023 away from the rotating shaft 4024 is in sliding contact with the inner wall surface of the cold water channel 4021. After the cold water and the refrigerant exchange heat, ice crystals are condensed on the inner wall surface of the cold water channel 4021. When the rotating shaft 4024 drives the scraper 4023 to rotate, the ice crystals can be scraped off.

[0040] In this embodiment, a second expansion valve 401 is provided at the refrigerant inlet of the ice slurry generator 402 .

[0041] The operating principles of each mode of the cold storage type fluorine pump air conditioning system in this embodiment are as follows:

[0042] The compression cycle mode includes a compression refrigeration cycle mode and a compression heating cycle mode. When the compression refrigeration cycle mode is started, the compressor 302 is used to drive the air conditioning system to refrigerate and cycle, and to supply cooling to the space where the indoor unit 202 is located. In this working mode, valve three 503, valve five 505, valve seven 507, valve nine 509, and valve ten 510 are in the on state, and the remaining valves are closed. The on or off of the first valve 601 to the sixth valve 606 is not required. The slider of the four-way reversing valve 301 is placed at the left end, the compressor 302 is turned on, and at least one indoor unit 202 is turned on; in this working mode, the gaseous refrigerant flowing out of the indoor unit 202 , flows through the right chamber of the four-way reversing valve 301 and enters the compressor 302. After being pressurized and heated in the compressor 302 and driving the refrigerant to flow, it passes through the left chamber of the four-way reversing valve 301 and enters the air-cooled condenser 303. In the air-cooled condenser 303, the high-temperature and high-pressure gaseous refrigerant releases heat to the outdoor air through indirect heat exchange. At this time, the gaseous refrigerant that releases heat is liquefied into liquid refrigerant. The liquid refrigerant is in the indoor unit part 200. When it flows through the first expansion valve 201, the pressure is reduced. After changing into a low-temperature liquid refrigerant, it indirectly exchanges heat with the air in the indoor unit 202, absorbs heat in the air, and enters the next cycle after being vaporized into a gaseous refrigerant.

[0043] When the compression heating cycle mode is started, the compressor 302 is used to drive the air conditioning system to run the heating cycle to supply heat to the space where the indoor unit 202 is located. In this working mode, valve three 503, valve five 505, valve seven 507, valve nine 509, and valve ten 510 are in the on state, and the remaining valves are closed. The on or off of the first valve 601 to the sixth valve 606 is not required. The slider of the four-way reversing valve 301 is placed at the right end, the compressor 302 is turned on, and at least one indoor unit 202 is turned on; in this working mode, the low-temperature low-pressure gas flowing out of the first expansion valve 201 The liquid refrigerant with pressure exchanges heat indirectly with the outdoor air in the air-cooled condenser 303. At this time, the liquid refrigerant absorbs the heat in the air and changes into gaseous refrigerant. The gaseous refrigerant passes through the left chamber of the four-way reversing valve 301 and enters the compressor 302. After being pressurized and heated in the compressor 302 and driving the refrigerant to flow, it flows through the right chamber of the four-way reversing valve 301. Then, the high-temperature and high-pressure gaseous refrigerant exchanges heat indirectly with the air in the indoor unit 202. The gaseous refrigerant transfers the heat to the air and changes into liquid refrigerant. It flows through the air-conditioning expansion valve to reduce the pressure and enters the next cycle.

[0044] When the ice slurry production cycle mode is started, the compressor 302 is used to drive the air conditioning system to run a refrigeration cycle, and ice slurry is produced during the low electricity consumption period to achieve cold storage. In this working mode, valve six 506, valve seven 507, valve nine 509, valve ten 510, valve eleven 511, valve thirteen 513, valve fifteen 515, the first valve 601, the third valve 603, and the fifth valve 605 are in a conducting state, and the remaining valves are closed. The slider of the four-way reversing valve 301 is placed at the left end, the compressor 302, the ice slurry pump 405, and the ice slurry generator 402 are turned on, and all indoor units 202 are turned off; in this working mode, the gaseous refrigerant flowing out of the ice slurry generator 402 flows through the right chamber of the four-way reversing valve 301 and then enters the compressor 302. After being pressurized and heated in the compressor 302 and driving the refrigerant to flow, it passes through the left chamber of the four-way reversing valve 301. After entering the room, it enters the air-cooled condenser 303. In the air-cooled condenser 303, the high-temperature and high-pressure gaseous refrigerant releases heat to the outdoor air through indirect heat exchange. At this time, the gaseous refrigerant that releases heat is liquefied into liquid refrigerant. The pressure of the liquid refrigerant decreases when it flows through the second expansion valve 401. After it changes into a low-temperature liquid refrigerant, it indirectly exchanges heat with cold water in the ice slurry generator 402, absorbs heat in the cold water, and enters the next cycle after being vaporized into gaseous refrigerant; in this working mode, the ice slurry pump 405 draws cold water from the bottom of the ice slurry storage tank 404, and the cold water enters the ice slurry generator 402 to exchange heat with the refrigerant. The cold water releases heat to the refrigerant in the ice slurry generator 402 and becomes ice slurry, which flows into and is stored in the ice slurry storage tank 404. Since the density of ice slurry is lower than that of cold water, generally, the ice slurry is stored in the upper part of the ice slurry storage tank 404, and the cold water is stored in the lower part of the ice slurry storage tank 404.

[0045] When the ice slurry cooling fluorine pump circulation is started, the ice slurry stored in the ice slurry storage tank 404 is used to cool the space where the indoor unit 202 is located during the peak period of electricity consumption, thereby reducing the energy consumption of the air-conditioning system during the peak period of electricity consumption. In this working mode, valve one 501, valve two 502, valve five 505, valve eight 508, valve ten 510, valve twelve 512, valve fourteen 514, valve sixteen 516, second valve 602, fourth valve 604, and sixth valve 606 are in the on state, and the remaining valves are closed. The position of the slider of the four-way reversing valve 301 is not required, the fluorine pump 101 and the ice slurry pump 405 are turned on, and at least one indoor unit 202 is turned on; in this working mode The gaseous refrigerant flowing out of the indoor unit 202 indirectly exchanges heat with the ice slurry in the ice slurry heat exchanger 403. At this time, the gaseous refrigerant releases heat and liquefies into liquid refrigerant. After the liquid refrigerant increases its pressure in the fluorine pump 101 and overcomes the pipeline flow resistance, it adjusts its pressure when flowing through the first expansion valve 201 in the indoor unit part 200, and indirectly exchanges heat with the air in the indoor unit 202, absorbs heat from the air, and enters the next cycle after being vaporized into gaseous refrigerant; in this working mode, the ice slurry pump 405 draws cold water from the bottom of the ice slurry storage tank 404, and the cold water absorbs the heat of the refrigerant in the ice slurry heat exchanger 403 and then heats up, flows into and is stored in the ice slurry storage tank 404.

[0046] When the compression refrigeration cycle and the ice slurry production cycle are started together in the opening mode, the compressor 302 is used to drive the air conditioning system refrigeration cycle to operate, and the ice slurry generator 402 and the indoor unit 202 are operated at the same time, so as to realize the simultaneous production of ice slurry and air conditioning cooling, and improve the system guarantee rate. In this working mode, valve three 503, valve five 505, valve six 506, valve seven 507, valve nine 509, valve ten 510, valve eleven 511, valve thirteen 513, valve fifteen 515, the first valve 601, the third valve 603, and the fifth valve 605 are in the conducting state, and the remaining valves are closed. The slider of the four-way reversing valve 301 is placed at the left end, the compressor 302, the ice slurry pump 405, the ice slurry generator 402 are turned on, and at least one indoor unit 202 is turned on; in this working mode, the gaseous refrigerant flowing out of the ice slurry generator 402 and the indoor unit 202 is collected, flows through the right chamber of the four-way reversing valve 301 into the compressor 302, and after being pressurized and heated in the compressor 302 and driving the refrigerant to flow, it passes through the left chamber of the four-way reversing valve 301 and enters the air-cooled condenser 303. In the air-cooled condenser 303, the high-temperature and high-pressure gaseous refrigerant transfers heat through indirect exchange. Heat is released to the outdoor air, and the gaseous refrigerant that releases heat is liquefied into liquid refrigerant. After flowing out of the air-cooled condenser 303, the liquid refrigerant is divided into two paths, one part enters the ice slurry cold storage part 400, and the rest enters the indoor unit part 200, and the distribution ratio of the refrigerant can be changed by adjusting the opening of valve three 503 and valve eleven 511; in the ice slurry cold storage part 400, the pressure of the liquid refrigerant decreases when flowing through the second expansion valve 401, and after changing into a low-temperature liquid refrigerant, it indirectly exchanges heat with cold water in the ice slurry generator 402, absorbs heat in the cold water, and vaporizes into gaseous refrigerant. ; The pressure of the liquid refrigerant decreases when it flows through the first expansion valve 201 in the indoor unit part 200, and it changes into a low-temperature liquid refrigerant. It then indirectly exchanges heat with the air in the indoor unit 202, absorbs heat from the air, and vaporizes into a gaseous refrigerant. It then mixes with the gaseous refrigerant flowing out of the ice slurry generator 402 and enters the next cycle; in this working mode, the ice slurry pump 405 draws cold water from the bottom of the ice slurry storage tank 404, and the cold water enters the ice slurry generator 402 to exchange heat with the refrigerant. The cold water releases heat to the refrigerant in the ice slurry generator 402 and becomes ice slurry, which flows into and is stored in the ice slurry storage tank 404.

[0047] When the ice slurry cooling natural circulation mode is started, it is necessary to ensure that the placement position of the ice slurry cold storage part 400 is significantly higher than the indoor unit part 200. The gravity difference caused by the phase change during the circulation of the refrigerant will form a natural circulation in the refrigerant pipeline. When the fluorine pump 101 is not started during the peak period of electricity consumption, the ice slurry stored in the ice slurry storage tank 404 is still used to cool the space where the indoor unit 202 is located, further reducing the energy consumption of the air-conditioning system during the peak period of electricity consumption. In this working mode, valve four 504, valve five 505, valve eight 508, valve ten 510, valve twelve 512, valve fourteen 514, valve sixteen 516, the second valve 602, the fourth valve 604, and the sixth valve 606 are in the on state, and the remaining valves are closed. There is no requirement for the position of the slider of the reversing valve 301. The ice slurry pump 405 is turned on, and at least one indoor unit 202 is turned on. In this working mode, the gaseous refrigerant flowing out of the indoor unit 202 indirectly exchanges heat with the ice slurry in the ice slurry heat exchanger 403. At this time, the gaseous refrigerant releases heat and liquefies into liquid refrigerant. The liquid refrigerant is in the indoor unit part 200, and the pressure is adjusted when flowing through the first expansion valve 201. It indirectly exchanges heat with the air in the indoor unit 202, absorbs heat in the air, and enters the next cycle after being vaporized into gaseous refrigerant. In this working mode, the ice slurry pump 405 draws cold water from the bottom of the ice slurry storage tank 404. The cold water absorbs the heat of the refrigerant in the ice slurry heat exchanger 403 and then heats up, flows into and is stored in the ice slurry storage tank 404.

[0048] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0049] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0050] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A cold storage type fluorine pump air conditioning system, characterized in that: It includes indoor unit part, outdoor unit part, fluorine pump, ice slurry preparation part and ice slurry cooling part; The indoor unit part is connected with the outdoor unit part to form a compression refrigeration cycle or a compression heating cycle; The outdoor unit part is connected with the ice slurry making part to form an ice slurry making cycle, and the ice slurry making part includes an ice slurry generator, an ice slurry storage tank and an ice slurry pump. The ice slurry generator is connected with two refrigerant ports of the outdoor unit part through a refrigerant inlet and a refrigerant outlet respectively, the cold water inlet of the ice slurry generator is connected with the ice slurry storage tank through the ice slurry pump, and the ice slurry outlet of the ice slurry generator is connected with the ice slurry storage tank; The fluorine pump, the ice slurry cooling part and the indoor unit part are connected to form an ice slurry cooling fluorine pump cycle, the ice slurry cooling part includes an ice slurry heat exchanger, the ice slurry inlet of the ice slurry heat exchanger is connected to the ice slurry storage tank through the ice slurry pump, the cold water outlet of the ice slurry heat exchanger is connected to the ice slurry storage tank, the refrigerant inlet of the ice slurry heat exchanger is connected to a refrigerant port of the indoor unit part, and the refrigerant outlet of the ice slurry heat exchanger is connected to another refrigerant port of the indoor unit part through the fluorine pump; The ice slurry cooling part and the indoor unit part are connected to form an ice slurry cooling natural cycle, the refrigerant inlet of the ice slurry heat exchanger is connected to a refrigerant port of the indoor unit part, and the refrigerant outlet of the ice slurry heat exchanger is connected to another refrigerant port of the indoor unit part.

2. The cold storage type fluorine pump air conditioning system according to claim 1, characterized in that: The outdoor unit part includes a four-way reversing valve for switching the refrigerant flow direction, a compressor and an air-cooled condenser. The refrigerant inlet of the compressor, the refrigerant outlet of the compressor, the refrigerant port of the indoor unit part and the refrigerant port of the air-cooled condenser are all connected to the four-way reversing valve.

3. The cold storage type fluorine pump air conditioning system according to claim 2, characterized in that: The air-cooled condenser comprises a heat exchange coil and a fan. Refrigerant flows in the heat exchange coil, and the airflow direction of the fan is arranged toward the heat exchange coil.

4. The cold storage type fluorine pump air conditioning system according to claim 2, characterized in that: The indoor unit part includes at least one indoor unit and a number of first expansion valves matching the indoor units. The two refrigerant ports of the indoor unit are respectively connected to the four-way reversing valve and the refrigerant port of the air-cooled condenser away from the four-way reversing valve. The first expansion valve is arranged on the connecting pipeline between the indoor unit and the air-cooled condenser.

5. The cold storage type fluorine pump air conditioning system according to claim 1, characterized in that: The cold storage type fluorine pump air conditioning system also includes a first refrigerant bypass pipeline and a second refrigerant bypass pipeline, one end of the refrigerant bypass pipeline is connected to a refrigerant port of the outdoor unit part, and the other end is respectively connected to another refrigerant port of the outdoor unit part and a refrigerant port of the indoor unit part, the fluorine pump is arranged in parallel on the branch pipeline connecting the first refrigerant bypass pipeline and the indoor unit part, the ice slurry generator and the ice slurry heat exchanger are respectively arranged in parallel on the first refrigerant bypass pipeline; the second refrigerant bypass pipeline is arranged in parallel with the outdoor unit part; the cold storage type fluorine pump air conditioning system includes a valve group for switching the cold storage type fluorine pump air conditioning system to a compression refrigeration cycle mode or a compression heating cycle mode, an ice slurry production cycle mode, an ice slurry cooling fluorine pump cycle mode, a compression refrigeration cycle and an ice slurry production cycle jointly opened mode, and an ice slurry cooling natural cycle mode.

6. The cold storage type fluorine pump air conditioning system according to claim 5, characterized in that: The water outlet of the ice slurry storage tank is connected to the ice slurry circulation pipeline through the ice slurry pump, and the water outlet of the ice slurry circulation pipeline is connected to the water inlet of the ice slurry storage tank. The ice slurry generator and the ice slurry heat exchanger are respectively arranged in parallel on the ice slurry circulation pipeline. The ice slurry circulation pipeline, the parallel pipeline between the ice slurry generator and the ice slurry circulation pipeline, and the parallel pipeline between the ice slurry heat exchanger and the ice slurry circulation pipeline are all provided with valves for switching the ice slurry circulation pipeline to be connected to the ice slurry generator, or the ice slurry circulation pipeline to be connected to the ice slurry heat exchanger.

7. The cold storage type fluorine pump air conditioning system according to claim 1, characterized in that: The water outlet of the ice slurry storage tank is arranged on one side of the bottom, and the water inlet of the ice slurry storage tank is located in the middle position of the bottom of the ice slurry storage tank. A water inlet pipe is arranged at the water inlet of the ice slurry storage tank, and the water inlet pipe extends into the ice slurry storage tank. The extended end of the water inlet pipe is located in the middle position of the top of the inner cavity of the ice slurry storage tank.

8. The cold storage type fluorine pump air conditioning system according to claim 1, characterized in that: A laser sensor for detecting whether the ice slurry is full is arranged at the bottom of the inner peripheral wall of the ice slurry storage tank.

9. The cold storage type fluorine pump air conditioning system according to claim 1, characterized in that: The ice slurry generator includes a cold water channel and a refrigerant channel. The refrigerant channel is sleeved on the outer peripheral side of the cold water channel. The inner cavity of the cold water channel is cylindrical. A rotating shaft is coaxially arranged in the cold water channel. The rotating shaft is connected to a driving device. A scraper is arranged on the peripheral side of the rotating shaft for scraping off ice crystals condensed on the inner wall of the cold water channel.

10. The cold storage type fluorine pump air conditioning system according to claim 1, characterized in that: A second expansion valve is provided at the refrigerant inlet of the ice slurry generator.

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