CN201885482U - Natural working medium CO2 (Carbon Dioxide) supermarket refrigeration, air-conditioning and hot water device - Google Patents

Natural working medium CO2 (Carbon Dioxide) supermarket refrigeration, air-conditioning and hot water device Download PDF

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CN201885482U
CN201885482U CN2010205883944U CN201020588394U CN201885482U CN 201885482 U CN201885482 U CN 201885482U CN 2010205883944 U CN2010205883944 U CN 2010205883944U CN 201020588394 U CN201020588394 U CN 201020588394U CN 201885482 U CN201885482 U CN 201885482U
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valve
hot water
interface
outlet
inlet
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宁静红
刘圣春
李慧宇
苗惠
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Tianjin University of Commerce
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Tianjin University of Commerce
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Abstract

The utility model discloses a natural working medium CO2 supermarket refrigeration, air-conditioning and hot water device, and provides a supermarket combined system which adopts CO2 working medium and is integrated with the functions of cooling, heating, food refrigeration and domestic hot water supply, in order to reduce heat pollution and save energy. The system comprises an air-conditioning system, a food refrigeration system and a hot water supply system; the air-conditioning system comprises a CO2 transcritical air-conditioning cycle system adopting CO2 as circulating working medium and an air supply system; the food refrigeration system comprises a high-temperature CO2 transcritical refrigeration cycle, a low-temperature CO2 subcritical refrigeration cycle and a medium-temperature CO2 cold-carrying cycle; and the hot water supply system comprises a water-replenishing tank, a first water pump, a second water pump and a heat-accumulating water tank. While providing a cold source and a heat source for different seasons, the air-conditioning system of the CO2 transcritical cycle supplies domestic hot water, and while providing a cold source for the preservation of food, the refrigeration system comprising the high-temperature CO2 transcritical refrigeration cycle, the low-temperature CO2 subcritical refrigeration cycle and the medium-temperature CO2 cold-carrying cycle can supply domestic hot water.

Description

Natural refrigerant carbon dioxide supermarket refrigeration, air-conditioning and hot water apparatus
Technical field
The utility model relates to a kind of natural refrigerant carbon dioxide supermarket refrigeration, air-conditioning and hot water apparatus.
Background technology
Along with improving constantly of people's living standard, quality and shopping environment space to liquid consumer food products propose higher requirement, simultaneously, when impelling economic fast development, cause the in short supply of natural resources and serious environmental pollution day by day, the supermarket air-conditioning of exploitation environmental protection and energy saving and the focus that the Food Freezing and Cold Storage refrigeration system becomes various countries' scholar's research.At present, to reduce refrigerant charge, reduce environmental pollution, to reduce slip and equipment investment is the development trend of the supermarket refrigerated air-conditioning system of target, make the main cold-producing medium of Ceng Zuowei, be widely used in vapour compression refrigeration system, more than 130 year historical CO arranged 2Receive increasing concern.CO 2Had do not fire, excellent characteristic such as nontoxic determined it at the supermarket refrigerated air-conditioning system huge application potential to be arranged, the probably development that can obtain advancing by leaps and bounds in future.Complete CO 2Supermarket multiple-effect combined system, can realize the supermarket air-conditioning system and in, low temperature food product refrigerating kind of refrigeration cycle all adopts CO 2Working medium realizes natural refrigerant CO fully 2Circulation.At present, many scholars are being devoted to complete natural refrigerant CO 2The research of circulation still, does not all have to propose the concrete technical scheme of implementing.Complete natural refrigerant CO 2Circulation is applied to the supermarket refrigerated air-conditioning system energy savings, development low-carbon economy is had great impetus, has good development prospect.
The refrigeration working medium that domestic existing supermarket combined system is used, traditional working medium R22 is on the verge of being replaced, and mixed working fluid R404A etc. need synthetic, and cost is higher, influences environment.The food refrigerated freezing refrigeration of external exploitation adopts the cascade refrigeration circulation, and high temperature circulation refrigeration working medium R290 etc. has certain combustibility, need do strict sealing and safe protection treatment, and, the operating cost height.
The utility model content
The utility model is in order to overcome weak point of the prior art, a kind of CO that adopts fully to be provided 2The collection cooling of working medium, heating, food refrigeration and supply domestic hot-water are the supermarket multiple-effect combined system of one, and to reduce thermal pollution, environment is protected in low carbon cycle, energy savings, and also operating cost is low.
The utility model is achieved through the following technical solutions:
A kind of natural refrigerant carbon dioxide supermarket refrigeration, air-conditioning and hot water apparatus is characterized in that, comprise air-conditioning system, food refrigeration system and hot-water supply system;
Described air-conditioning system is by with CO 2CO for cycle fluid 2Striding critical air conditioner circulating system and supply air system forms;
Described CO 2Stride critical air conditioner circulating system and comprise indoor heat converter, first valve, first check valve, first stop valve, second stop valve, second check valve, CO 2Compressor, cross valve, heat exchanger, second valve, the 3rd valve, the 4th valve, the 5th valve, first heat recovering heat exchanger, the 6th valve, the 7th valve, the 8th valve, second interface of indoor heat converter is connected with the inlet of first check valve and the outlet of first stop valve respectively, the outlet of first check valve is connected with the inlet of second stop valve, the outlet of second check valve is connected with the inlet of first stop valve, second interface of heat exchanger is connected with the inlet of second check valve and the outlet of second stop valve respectively, first interface of heat exchanger is divided into four the tunnel, the 5th valve of leading up to is connected with pipe side first interface of first heat recovering heat exchanger, lead up to the 5th valve, the 3rd valve, the 7th valve is connected with first interface of indoor heat converter, lead up to the 5th valve, be connected by the inlet of first valve after the first interface parallel connection of the 3rd valve and cross valve, lead up to second valve with after second interface of cross valve is in parallel and CO with first check valve 2The inlet of compressor connects, second interface and the CO of cross valve 2The 8th valve is installed between the suction port of compressor, and pipe side second interface of first heat recovering heat exchanger is connected with first interface of indoor heat converter by the 6th valve; The 4th interface and the CO of cross valve 2The outlet of compressor connects, and the 3rd interface of cross valve is connected with pipe side second interface of first heat recovering heat exchanger by the 4th valve; Described supply air system is made up of air channel and fan, and indoor heat converter and Air Blast fan are arranged in the air channel;
Described food refrigeration system is by high temperature CO 2Stride critical refrigeration cycle, CO 2Low temperature subcritical refrigeration cycle and CO 2Middle Wen Zaileng circulation is formed, and comprises CO 2Gas cooler, second heat recovering heat exchanger, CO 2High temperature refrigeration compressor, CO 2High temperature expansion valve, CO 2Cryogenic refrigeration compressor, CO 2Cryogenic vaporizer, intercooler, CO 2Low-temperature expansion valve, CO 2Solution feed pump, middle temperature CO 2Expansion valve, mid temperature heat exchanger, CO 2The outlet of high temperature refrigeration compressor is connected with the pipe side entrance of second heat recovering heat exchanger, the pipe side outlet and the CO of second heat recovering heat exchanger 2The inlet of gas cooler connects, CO 2The outlet of gas cooler is through CO 2High temperature expansion valve is connected with second interface of intercooler, first interface and the CO of intercooler 2The inlet of high temperature refrigeration compressor connects; CO 2The outlet of cryogenic refrigeration compressor is connected the 4th interface and the CO of intercooler with the 3rd interface 54 of intercooler 2The inlet of low-temperature expansion valve connects, CO 2The outlet of low-temperature expansion valve and CO 2The inlet of cryogenic vaporizer connects, CO 2The outlet of cryogenic vaporizer and CO 2The inlet of cryogenic refrigeration compressor connects; The 5th interface of intercooler is connected with the outlet of mid temperature heat exchanger, the inlet of mid temperature heat exchanger and middle temperature CO 2The outlet of expansion valve connects, middle temperature CO 2The inlet of expansion valve and CO 2The feed flow delivery side of pump connects, CO 2The inlet of solution feed pump is connected with the 6th interface of intercooler;
Described hot-water supply system comprises water supply tank, first water pump, second water pump, hot water storage tank, the outlet of second water pump is connected with the shell-side inlet of second heat recovering heat exchanger, the shell-side outlet of second heat recovering heat exchanger is connected with second water return outlet of hot water storage tank, and second delivery port of hot water storage tank is connected with the inlet of second water pump; The outlet of first water pump is connected with the shell-side inlet of first heat recovering heat exchanger, and the shell-side outlet of first heat recovering heat exchanger is connected with first water return outlet of hot water storage tank, and first delivery port of hot water storage tank is connected with the inlet of first water pump; The delivery port of water supply tank is connected with the water supplement port of hot water storage tank, and the heating tube of electric heater is arranged in the hot water storage tank, and the hot water outlet of hot water storage tank is connected with the hot water supply system in supermarket.
In the air channel, be provided with the electrical heating secondary unit.
Intercooler is surrounded by insulating outward.
Hot water storage tank is surrounded by insulating outward.
The utlity model has following technique effect:
The complete CO of the utility model 2The supermarket multiple-effect combined system of working medium, air-conditioning system is CO 2Stride critical air-conditioning circulation, adopt green natural refrigerant CO 2Be cycle fluid.The food refrigeration system adopts by high temperature CO 2Stride critical refrigeration cycle, CO 2Low temperature subcritical refrigeration cycle and CO 2Middle Wen Zaileng circulation is formed, and utilizes natural refrigerant CO 2, be used for the freezing of food and refrigeration.HTHP CO when simultaneously, making full use of the operation of air-conditioning system and refrigeration system 2Gas cooled temperature-fall period liberated heat prepares the domestic hot-water.The utility model makes full use of the CO that occurring in nature extensively exists 2, reducing cost greatly, energy savings thoroughly solves the pollution of compound to environment, adapts to the low-carbon economy circulation, meets the requirement of sustainable development.And of the present utility model easy to operate, control flexibly, and is safe and reliable.CO 2Working medium does not need to synthesize, and is cheap, to food and environmental nonpollution, do not have potential safety hazard, and operating cost is low.
Description of drawings
Fig. 1 is the schematic diagram of the utility model natural refrigerant carbon dioxide supermarket refrigeration, air-conditioning and hot water apparatus.
Fig. 2 is the interface schematic diagram of cross valve.
Fig. 3 is the interface schematic diagram of hot water storage tank.
Fig. 4 is the interface schematic diagram of first heat recovering heat exchanger.
Fig. 5 is the interface schematic diagram of indoor heat converter.
Fig. 6 is the interface schematic diagram of heat exchanger.
Fig. 7 is the interface schematic diagram of intercooler.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
The schematic diagram of natural refrigerant carbon dioxide of the present utility model supermarket refrigeration, air-conditioning and hot water apparatus such as Fig. 1 comprise air-conditioning system, food refrigeration system and hot-water supply system to shown in Figure 7.
Described air-conditioning system is by with CO 2CO for cycle fluid 2Striding critical air conditioner circulating system and supply air system forms.
Described CO 2Stride critical air conditioner circulating system and comprise indoor heat converter 1, first valve 2, first check valve 3, first stop valve 4, second stop valve 5, second check valve 6, CO 2Compressor 7, cross valve 8, heat exchanger 9, second valve 10, the 3rd valve 11, the 4th valve 12, the 5th valve 13, first heat recovering heat exchanger 14, the 6th valve 18, the 7th valve 19, the 8th valve 36, second interface 49 of indoor heat converter 1 is connected with the inlet of first check valve 3 and the outlet of first stop valve 4 respectively, the outlet of first check valve 3 is connected with the inlet of second stop valve 5, the outlet of second check valve 6 is connected with the inlet of first stop valve 4, second interface 51 of heat exchanger 9 is connected with the inlet of second check valve 6 and the outlet of second stop valve 5 respectively, first interface 50 of heat exchanger 9 is leaded up to the 5th valve 13 and is connected with pipe side first interface 46 of first heat recovering heat exchanger 14, lead up to the 5th valve 13, the 3rd valve 11, the 7th valve 19 is connected with first interface 48 of indoor heat converter 1, lead up to the 5th valve 13, first interface, 37 backs in parallel of the 3rd valve 11 and cross valve 8 are connected with the inlet of first check valve 3 by first valve 2, lead up to second interface, the 38 back and CO in parallel of second valve 10 and cross valve 8 2The inlet of compressor 7 connects, second interface 38 and the CO of cross valve 2Pipe side second interface 47 that the 8th valve 36, the first heat recovering heat exchangers 14 are installed between the inlet of compressor 7 is connected with first interface 48 of indoor heat converter 1 by the 6th valve 18.The 4th interface 40 and CO of cross valve 8 2The outlet of compressor 7 connects, and the 3rd interface 39 of cross valve 8 is connected with pipe side second interface 47 of first heat recovering heat exchanger 14 by the 4th valve 12.
Described supply air system is made up of air channel 20 and fan 35, and indoor heat converter 1 and Air Blast fan 35 are arranged in the air channel 20.
Described food refrigeration system is by high temperature CO 2Stride critical refrigeration cycle, CO 2Low temperature subcritical refrigeration cycle and CO 2Middle Wen Zaileng circulation is formed, and comprises CO 2Gas cooler 23, second heat recovering heat exchanger 24, CO 2High temperature refrigeration compressor 25, CO 2High temperature expansion valve 26, CO 2Cryogenic refrigeration compressor 27, CO 2Cryogenic vaporizer 28, intercooler 29, CO 2Low-temperature expansion valve 30, CO 2Solution feed pump 31, middle temperature CO 2Expansion valve 32, mid temperature heat exchanger 33.CO 2The outlet of high temperature refrigeration compressor 25 is connected with the pipe side entrance of second heat recovering heat exchanger 24, the pipe side outlet and the CO of second heat recovering heat exchanger 24 2The inlet of gas cooler 23 connects, CO 2The outlet of gas cooler 23 is through CO 2High temperature expansion valve 26 is connected with second interface 53 of intercooler 29, first interface 52 and the CO of intercooler 29 2The inlet of high temperature refrigeration compressor 25 connects.CO 2The outlet of cryogenic refrigeration compressor 27 is connected with the 3rd interface 54 of intercooler 29, the 4th interface 55 and CO of intercooler 29 2The inlet of low-temperature expansion valve 30 connects, CO 2The outlet of low-temperature expansion valve 30 and CO 2The inlet of cryogenic vaporizer 28 connects, CO 2The outlet of cryogenic vaporizer 28 and CO 2The inlet of cryogenic refrigeration compressor 27 connects.The 5th interface 56 of intercooler 29 is connected with the outlet of mid temperature heat exchanger 33, the inlet of mid temperature heat exchanger 33 and middle temperature CO 2The outlet of expansion valve 32 connects, middle temperature CO 2The inlet of expansion valve 32 and CO 2The outlet of solution feed pump 31 connects, CO 2The inlet of solution feed pump 31 is connected with the 6th interface 57 of intercooler 29.
Described hot-water supply system comprises water supply tank 15, first water pump 16, second water pump 21, hot water storage tank 17, the outlet of second water pump 21 is connected with the shell-side inlet of second heat recovering heat exchanger 24, the shell-side outlet of second heat recovering heat exchanger 24 is connected with second water return outlet 42 of hot water storage tank 17, and second delivery port 41 of hot water storage tank 17 is connected with the inlet of second water pump 21; The outlet of first water pump 16 is connected with the shell-side inlet of first heat recovering heat exchanger 14, and the shell-side outlet of first heat recovering heat exchanger 14 is connected with first water return outlet 43 of hot water storage tank 17, and first delivery port 44 of hot water storage tank 17 is connected with the inlet of first water pump 16.The delivery port of water supply tank 15 is connected with the water supplement port 45 of hot water storage tank 17, and the heating tube of electric heater 34 is arranged in the hot water storage tank 17, and the hot water outlet of hot water storage tank 17 is connected with the hot water supply system in supermarket.
Be provided with electrical heating secondary unit 22 in the air channel, electrical heating secondary unit 22 is independent electric heating equipment, and being used for the heat of indoor heating demand in winter provides auxiliary thermal source when big.If the requirement of hot water is bigger, high-temperature gas thermal discharge in first heat recovering heat exchanger 14 of recovery and second heat recovering heat exchanger 24 is not enough to satisfy the demands, and can utilize electric heater 34 that heat is provided.
Intercooler is surrounded by insulating outward to guarantee the control accuracy of medium temperature.Hot water storage tank is surrounded by insulating outward to reduce thermal loss.
When providing low-temperature receiver for the freezing and refrigeration of food is fresh-keeping, CO 2Gas is at CO 2Compression back pressure raises the CO of HTHP in the high temperature refrigeration compressor 25 2Gas is at second heat recovering heat exchanger 24 and the CO 2Cool after CO in the gas cooler 23 2Enter intercooler 29 after the high temperature expansion valve 26 throttling step-downs, the CO in the gaseous mixture gas-liquid two-phase liquid in intercooler 29 2Gas is inhaled into CO 2Finish high temperature circulation in the high temperature refrigeration compressor 25.CO in the intercooler 29 2Liquid is divided into two-way, and one the tunnel through CO 2The 30 throttling step-downs of low-temperature expansion valve become the fluid of low-temp low-pressure to enter CO 2Cryogenic vaporizer 28 is at CO 2Absorb in the cryogenic vaporizer 28 and be frozen fresh-keeping food heat, flash to low-temp low-pressure gas after, enter CO 2Cryogenic refrigeration compressor 27 is finished CO 2The low temperature circulation; Other one road CO 2Liquid is through CO 2Solution feed pump 31 pressurizations, warm CO in the process 2Enter mid temperature heat exchanger 33 after the expansion valve 32 throttling step-downs, in mid temperature heat exchanger 33, absorb, the CO after temperature raises by the heat of cold storing and fresh-keeping food 2Liquid, enter intercooler 29 finish in warm CO 2The refrigerating medium circulation.
When summer, space cooling, food refrigeration was supplied the domestic hot-water simultaneously, the 6th valve 18, the 3rd valve 11, second valve 10, first valve 2 are closed, and the 3rd interface 39 of cross valve 8 and the 4th interface 40 are communicated with, and first interface 37 is communicated with second interface 38.CO 2Stride in the critical air-conditioning circulation, from CO 2The CO that compressor 7 comes out 2Gas, flow through the 4th valve 12, first heat recovering heat exchanger 14 and the 5th valve 13, in heat exchanger 9 with external environment heat exchange cooling after, through second check valve 6, the 4 throttling step-downs of first stop valve, in indoor heat converter 1 with the room air heat exchange, absorb heat after, get back to CO through the 7th valve 19, cross valve 8, the eight valves 36 2Compressor 7.Indoor heat converter 1 absorbs the heat of air, and the cool air after the cooling is delivered to the place that needs by supply air system, for personnel's activity space provides low-temperature receiver.By high temperature CO 2Stride critical refrigeration cycle, CO 2Low temperature subcritical refrigeration cycle and CO 2The kind of refrigeration cycle that middle Wen Zaileng circulation is formed provides low-temperature receiver for the freezing and refrigeration fresh-keeping foodstuff.Simultaneously, the water in the hot water storage tank 17, the one tunnel absorbs CO through first water pump 16 in first heat recovering heat exchanger 14 2Stride high temperature CO in the critical air-conditioning circulation 2Temperature raises behind the gas liberated heat, gets back in the hot water storage tank 17.One the tunnel absorbs CO through second water pump 21 in second heat recovering heat exchanger 24 2Stride high temperature CO in the critical refrigeration cycle 2Temperature raises behind the gas liberated heat, gets back in the hot water storage tank 17.Hot water in the hot water storage tank 17 is sent to the hot water supply system in supermarket by hot water outlet.
When supplying the domestic hot-water simultaneously when freezing for space heating in winter, food, the 5th valve 13, the 4th valve 12, the 7th valve 19, the 8th valve 36 and first valve 2 are closed, and first interface 37 of cross valve 8 and the 4th interface 40 are communicated with, and the 3rd interface 39 is communicated with second interface 38.CO 2Stride in the critical air-conditioning circulation, from CO 2The high temperature CO that compressor 7 comes out 2Gas flow through the 3rd valve 11, first heat recovering heat exchanger 14 and the 6th valve 18, enter indoor heat converter 1, after the room air heat exchange, through first check valve 3, the 5 throttling step-downs of second stop valve, the flow through heat exchanger 9 and second valve 10 are got back to compressor 7.Room air absorbs high temperature CO in the indoor heat converter 1 2The gas liberated heat, hot-air is sent to the place that needs by supply air system, for personnel's activity space provides thermal source.By high temperature CO 2Stride critical refrigeration cycle, CO 2Low temperature subcritical refrigeration cycle and CO 2The kind of refrigeration cycle that middle Wen Zaileng circulation is formed provides low-temperature receiver for the freezing and refrigeration fresh-keeping foodstuff.Simultaneously, the water in the hot water storage tank 17, the one tunnel absorbs CO through first water pump 16 in first heat recovering heat exchanger 14 2Stride high temperature CO in the critical air-conditioning circulation 2Temperature raises behind the gas liberated heat, gets back in the hot water storage tank 17.One the tunnel absorbs CO through second water pump 21 in second heat recovering heat exchanger 24 2Stride high temperature CO in the critical refrigeration cycle 2Temperature raises behind the gas liberated heat, gets back in the hot water storage tank 17.Hot water in the hot water storage tank 17 is sent to the hot water supply system in supermarket by hot water outlet.
Heat if desired is bigger, can utilize secondary unit 22 heating that supplemental heat is provided.
Do not need cooling and heat supply in the spring and autumn supermarket, only need provide domestic hot-water and food refrigeration, by high temperature CO 2Stride critical refrigeration cycle, CO 2Low temperature subcritical refrigeration cycle and CO 2The kind of refrigeration cycle that middle Wen Zaileng circulation is formed provides low-temperature receiver for the freezing and refrigeration fresh-keeping foodstuff.Supply domestic hot-water in the food refrigeration.In high temperature CO 2Stride the CO of critical refrigeration cycle 2When the hot water that the high-temperature gas heat release provides can not meet the demands, start CO 2Stride critical air-conditioning circulation, CO 2Stride in the critical air-conditioning circulation, the 5th valve 13, second valve, 18, the eight valves 36 and the 7th valve 19 are closed.The 3rd interface 39 of cross valve 8 and the 4th interface 40 are communicated with, and first interface 37 is communicated with second interface 38.CO 2Stride in the critical air-conditioning circulation, from CO 2The CO that compressor 7 comes out 2Flow through cross valve 8, the 4th valve 12, first heat recovering heat exchanger 14, the 3rd valve 11, first valve 2, first check valve 3, second stop valve 5, heat exchanger 9 and second valve 10 of working medium got back to CO 2Compressor 7.Water in the water tank 17 absorbs CO through first water pump 16 and second water pump 21 in first heat recovering heat exchanger 14 and second heat recovering heat exchanger 24 2Temperature raises behind the high-temperature gas liberated heat, is sent to the place that needs hot water.
Utilize collection cooling of the present utility model, heating, food refrigeration and heat supply water complete CO for one 2The supermarket multiple-effect combined system of working medium can provide nice and cool space for the summer in supermarket, provide warm environment winter, simultaneously food to be carried out freezing and refrigeration fresh-keeping and be the processing of food and personnel's demand supply domestic hot-water.According to the different personnel and the needs in season, the running time of control air-conditioning system, the indoor temperature of regulating the space, supermarket simultaneously, makes full use of air-conditioning system CO 2Stride high temperature CO in the critical cycle 2Gas cooled and food refrigeration system CO 2Stride CO in the critical cycle 2High-temperature gas cooling liberated heat provide indoor domestic hot-water with can needs.
Although disclosed a kind of natural refrigerant carbon dioxide supermarket refrigeration, air-conditioning and the hot water apparatus of relating to carried out special description with reference to embodiment, embodiment described above is illustrative and not restrictive, under the situation that does not break away from spirit and scope of the present utility model, all variations and modification are all within scope of the present utility model.

Claims (4)

1. a natural refrigerant carbon dioxide supermarket refrigeration, air-conditioning and hot water apparatus is characterized in that, comprise air-conditioning system, food refrigeration system and hot-water supply system;
Described air-conditioning system is by with CO 2CO for cycle fluid 2Striding critical air conditioner circulating system and supply air system forms;
Described CO 2Stride critical air conditioner circulating system and comprise indoor heat converter, first valve, first check valve, first stop valve, second stop valve, second check valve, CO 2Compressor, cross valve, heat exchanger, second valve, the 3rd valve, the 4th valve, the 5th valve, first heat recovering heat exchanger, the 6th valve, the 7th valve, the 8th valve, second interface of indoor heat converter is connected with the inlet of first check valve and the outlet of first stop valve respectively, the outlet of first check valve is connected with the inlet of second stop valve, the outlet of second check valve is connected with the inlet of first stop valve, second interface of heat exchanger is connected with the inlet of second check valve and the outlet of second stop valve respectively, first interface of heat exchanger is divided into four the tunnel, the 5th valve of leading up to is connected with pipe side first interface of first heat recovering heat exchanger, lead up to the 5th valve, the 3rd valve, the 7th valve is connected with first interface of indoor heat converter, lead up to the 5th valve, be connected by the inlet of first valve after the first interface parallel connection of the 3rd valve and cross valve, lead up to second valve with after second interface of cross valve is in parallel and CO with first check valve 2The inlet of compressor connects, second interface and the CO of cross valve 2The 8th valve is installed between the suction port of compressor, and pipe side second interface of first heat recovering heat exchanger is connected with first interface of indoor heat converter by the 6th valve; The 4th interface and the CO of cross valve 2The outlet of compressor connects, and the 3rd interface of cross valve is connected with pipe side second interface of first heat recovering heat exchanger by the 4th valve; Described supply air system is made up of air channel and fan, and indoor heat converter and Air Blast fan are arranged in the air channel;
Described food refrigeration system is by high temperature CO 2Stride critical refrigeration cycle, CO 2Low temperature subcritical refrigeration cycle and CO 2Middle Wen Zaileng circulation is formed, and comprises CO 2Gas cooler, second heat recovering heat exchanger, CO 2High temperature refrigeration compressor, CO 2High temperature expansion valve, CO 2Cryogenic refrigeration compressor, CO 2Cryogenic vaporizer, intercooler, CO 2Low-temperature expansion valve, CO 2Solution feed pump, middle temperature CO 2Expansion valve, mid temperature heat exchanger, CO 2The outlet of high temperature refrigeration compressor is connected with the pipe side entrance of second heat recovering heat exchanger, the pipe side outlet and the CO of second heat recovering heat exchanger 2The inlet of gas cooler connects, CO 2The outlet of gas cooler is through CO 2High temperature expansion valve is connected with second interface of intercooler, first interface and the CO of intercooler 2The inlet of high temperature refrigeration compressor connects; CO 2The outlet of cryogenic refrigeration compressor is connected the 4th interface and the CO of intercooler with the 3rd interface 54 of intercooler 2The inlet of low-temperature expansion valve connects, CO 2The outlet of low-temperature expansion valve and CO 2The inlet of cryogenic vaporizer connects, CO 2The outlet of cryogenic vaporizer and CO 2The inlet of cryogenic refrigeration compressor connects; The 5th interface of intercooler is connected with the outlet of mid temperature heat exchanger, the inlet of mid temperature heat exchanger and middle temperature CO 2The outlet of expansion valve connects, middle temperature CO 2The inlet of expansion valve and CO 2The feed flow delivery side of pump connects, CO 2The inlet of solution feed pump is connected with the 6th interface of intercooler;
Described hot-water supply system comprises water supply tank, first water pump, second water pump, hot water storage tank, the outlet of second water pump is connected with the shell-side inlet of second heat recovering heat exchanger, the shell-side outlet of second heat recovering heat exchanger is connected with second water return outlet of hot water storage tank, and second delivery port of hot water storage tank is connected with the inlet of second water pump; The outlet of first water pump is connected with the shell-side inlet of first heat recovering heat exchanger, and the shell-side outlet of first heat recovering heat exchanger is connected with first water return outlet of hot water storage tank, and first delivery port of hot water storage tank is connected with the inlet of first water pump; The delivery port of water supply tank is connected with the water supplement port of hot water storage tank, and the heating tube of electric heater is arranged in the hot water storage tank, and the hot water outlet of hot water storage tank is connected with the hot water supply system in supermarket.
2. natural refrigerant carbon dioxide according to claim 1 supermarket refrigeration, air-conditioning and hot water apparatus is characterized in that, are provided with the electrical heating secondary unit in the air channel.
3. natural refrigerant carbon dioxide according to claim 1 supermarket refrigeration, air-conditioning and hot water apparatus is characterized in that intercooler is surrounded by insulating outward.
4. natural refrigerant carbon dioxide according to claim 1 supermarket refrigeration, air-conditioning and hot water apparatus is characterized in that hot water storage tank is surrounded by insulating outward.
CN2010205883944U 2010-11-03 2010-11-03 Natural working medium CO2 (Carbon Dioxide) supermarket refrigeration, air-conditioning and hot water device Expired - Fee Related CN201885482U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102455083A (en) * 2010-11-03 2012-05-16 天津商业大学 Multiple-effect combination system with complete CO2 working mediums for supermarket
CN102519168A (en) * 2011-12-21 2012-06-27 天津商业大学 Solar vegetable production distribution base combination system
CN104848592A (en) * 2015-05-29 2015-08-19 天津城建大学 Fuel driving type air cooling compression heat pump system based on carbon dioxide working medium
CN107933594A (en) * 2017-12-18 2018-04-20 中车大连机车研究所有限公司 One kind is based on CO2The trans critical cycle railway vehicle air conditioner system of refrigerant
US10197306B2 (en) 2013-08-14 2019-02-05 Carrier Corporation Heat pump system, heat pump unit using the same, and method for controlling multiple functional modes thereof
CN111795423A (en) * 2020-03-26 2020-10-20 同济大学 Carbon dioxide heat pump heating system based on three-fluid heat exchanger

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102455083A (en) * 2010-11-03 2012-05-16 天津商业大学 Multiple-effect combination system with complete CO2 working mediums for supermarket
CN102519168A (en) * 2011-12-21 2012-06-27 天津商业大学 Solar vegetable production distribution base combination system
US10197306B2 (en) 2013-08-14 2019-02-05 Carrier Corporation Heat pump system, heat pump unit using the same, and method for controlling multiple functional modes thereof
CN104848592A (en) * 2015-05-29 2015-08-19 天津城建大学 Fuel driving type air cooling compression heat pump system based on carbon dioxide working medium
CN107933594A (en) * 2017-12-18 2018-04-20 中车大连机车研究所有限公司 One kind is based on CO2The trans critical cycle railway vehicle air conditioner system of refrigerant
CN111795423A (en) * 2020-03-26 2020-10-20 同济大学 Carbon dioxide heat pump heating system based on three-fluid heat exchanger

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