CN201199103Y - Carbon dioxide air cooling system - Google Patents
Carbon dioxide air cooling system Download PDFInfo
- Publication number
- CN201199103Y CN201199103Y CNU2008200745442U CN200820074544U CN201199103Y CN 201199103 Y CN201199103 Y CN 201199103Y CN U2008200745442 U CNU2008200745442 U CN U2008200745442U CN 200820074544 U CN200820074544 U CN 200820074544U CN 201199103 Y CN201199103 Y CN 201199103Y
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- refrigerating medium
- reservoir
- cold
- liquid pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a carbon dioxide air cooling system, aiming at providing an air cooling system which uses carbon dioxide as a secondary refrigerant and has high safety. A cooling circulation system comprises a pressure accumulator, a liquid tank, a liquid pump, an air cooler and a fan, wherein, the pressure accumulator comprises an outer shell in which an inner pipe is installed, a pressure balancing valve is arranged on the inner pipe, one end of the inner pipe is connected with the secondary refrigerant outlet of an evaporative condenser and the other end is connected with the secondary refrigerant inlet of the liquid tank, the secondary refrigerant outlet of the liquid tank is connected with the secondary refrigerant inlet of the liquid pump, the secondary refrigerant outlet of the liquid pump is connected with the secondary refrigerant inlet of the air cooler, and the secondary refrigerant outlet of the air cooler is connected with the secondary refrigerant inlet of the evaporative condenser. A safety valve is arranged on the outer shell of the liquid tank and the pressure accumulator respectively. The cooling system is provided with a safety control system which can start different safety systems according to the different pressure of the cooling circulation system when emergency accidents such as power failure happen so as to guarantee the safety of the cooling system.
Description
Technical field
The utility model relates to a kind of cooling system, in particular, relates to a kind of air cooling system that adopts carbon dioxide as refrigerating medium.
Background technology
Now, in order to prevent the issuable FUTURE ENVIRONMENT problem of new synthetic cold-producing medium, the important trend that refrigeration machine working medium substitutes is to consider to use natural refrigerant as far as possible.But ammonia in the natural refrigerant and hydrocarbon are difficult to enter commercial refrigerating field, mainly are because smell, toxicity, combustibility and the hydrocarbon combustibility of ammonia become direct transpiration-cooled unsafe factor.In order to solve this contradiction, with refrigerating medium circulation cooling indirectly.Refrigerating medium is the media material that the cold that is used to that refrigerating plant is produced passes to the object that is cooled, and is far away from evaporimeter when the object that is cooled, and perhaps when being not easy to evaporimeter is installed with awkward silence at a meeting, must use refrigerating medium to transmit cold.Desirable refrigerating medium must satisfy: freezing point is low, do not solidify in the scope of using, do not gasify, specific heat is big, nontoxic, chemical stability good, density is little, viscosity is little, thermal conductivity factor is big, cheap, advantage such as obtain easily.
At present, traditional refrigerating medium mainly contains air, water, saline solution and organic refrigerating medium.The specific heat of air is less, is mainly used in the direct cooling procedure of air.Specific heat of water is bigger, but its freezing point temperature height, only can be as the refrigerating medium that transmits cold more than 0 ℃.Year cold performance of saline solution is relevant with the salt content in the solution, salt content (concentration) is high more, saline solution to carry cold temperature also just low more, but with the increase of the concentration of salt content, the viscosity coefficient of solution constantly increases, increased the pressure loss in year cold cyclic process, in addition, saline solution has strong corrosivity to metal, and meeting absorbs airborne moisture and solution concentration is reduced in the course of work, therefore must be regular with salt, thereby increased the difficulty of operational management.Organic refrigerating medium can obtain the lower cold temperature of carrying, but price is expensive, and cost is higher, and is inflammable, also is not easy to obtain, and the ODP or the GWP of the organic refrigerating medium of part are higher, and environment is had destruction.
Along with continuous advancement in technology, CO
2Because characteristics such as it is nontoxic, and density is little, and solution is obtained, and is neither flammable, also not combustion-supporting, as the highest oxidation state of carbon, has highly stable chemical property, and viscosity is little, and specific heat is big become the developing direction of refrigerating medium gradually.But use CO
2Cooling system operating pressure height, three phase point pressure is 5.18MPa, critical pressure is 7.37Mpa, be prone to accidents,, make existing use carbon dioxide as the most complex structure of the system of refrigerating medium to the security requirement height of system, volume is big, controls loaded down with trivial details.
The utility model content
The utility model is in order to overcome weak point of the prior art, to provide a kind of use carbon dioxide as refrigerating medium, air cooling system simple in structure, safe.
The utility model is achieved through the following technical solutions:
A kind of carbon dioxide air cooling system, form by a cooling cycle system and a year cold circulatory system, it is characterized in that, the cold circulatory system comprised the reservoir pressure device in described year, reservoir, liquid pump, aerial cooler and blower fan, described reservoir pressure device comprises shell, be provided with interior conduit in the described shell, be connected with equilibrated valve on the described interior conduit, the refrigerating medium outlet of the evaporative condenser in described interior conduit one end and the described cooling cycle system is connected, the other end of described interior conduit is connected with the refrigerating medium import of reservoir, the refrigerating medium outlet of described reservoir is connected with the refrigerating medium import of liquid pump, the refrigerating medium outlet of described liquid pump is connected with the refrigerating medium import of aerial cooler, the refrigerating medium outlet of described aerial cooler is connected with the refrigerating medium import of evaporative condenser, be provided with blower fan on aerial cooler top, be connected with safety valve respectively on described reservoir and the reservoir pressure device shell, on the pipeline between liquid pump and the aerial cooler, be connected with flow control valve.The refrigerating medium that wherein carries in the cold circulatory system is a carbon dioxide.
Cold-producing medium in the cooling cycle system be for can produce-60 ℃～-5 ℃ cold-producing medium, and cold-producing medium can be in ammonia, hydrocarbon, carbon dioxide, the azeotropic mixture class any.
Described cooling cycle system comprises compressor, condenser, evaporative condenser, the refrigerant outlet of compressor is connected with the refrigerant inlet of condenser, the refrigerant outlet of condenser is connected with the refrigerant inlet of evaporative condenser, the refrigerant outlet of evaporative condenser is connected with the refrigerant inlet of compressor, on the pipeline between condenser and the evaporative condenser, be connected with expansion valve, described compressor is connected with accessory power supply with main power source respectively, and described compressor is connected with automatic controller respectively with accessory power supply.
On the pipeline between flow control valve and the liquid pump, be connected with magnetic valve.Automatic controller is connected with safety valve, safety valve, liquid pump, flow control valve, blower fan, the magnetic valve on the reservoir pressure device on equilibrated valve, the reservoir respectively.
The utlity model has following technique effect:
Carbon dioxide air cooling system of the present utility model has three big safety control systems, be secondary power system, reservoir pressure device system, safety valve system, when burst accidents such as power failure occurring, can be according to the pressure difference of carrying the cold circulatory system, open different security systems, the safety of safeguards system, and, simple in structure, control easy.Simultaneously, adopt CO
2As refrigerating medium, can reach the effect of energy-saving and emission-reduction.In addition, CO
2Carry refrigeration technique and also can combine utilization with ammonia and hydrocarbon Refrigeration Technique, by carrying cold process, overcome deficiencies such as ammonia and hydrocarbon cold-producing medium be inflammable, poisonous, enlarge the application of ammonia and hydrocarbon cold-producing medium, as market, supermarket, hotel etc.
Description of drawings
Fig. 1 is the schematic diagram of the utility model carbon dioxide air cooling system.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
The schematic diagram of the utility model carbon dioxide air cooling system is made up of a cooling cycle system and a year cold circulatory system as shown in Figure 1, and cooling cycle system can extensively adopt refrigeration modes such as vaporizing liquid, gas expansion, vortex tube, thermoelectricity.The cold circulatory system comprised reservoir pressure device 6 in described year, reservoir 8, liquid pump 11, aerial cooler 13 and blower fan 14, described reservoir pressure device comprises shell, be provided with interior conduit 15 in the described shell, on interior conduit 15, be connected with equilibrated valve 7, the refrigerating medium outlet of the evaporative condenser 5 in described interior conduit one end and the described cooling cycle system is connected, the other end of described interior conduit is connected with the refrigerating medium import of reservoir, the refrigerating medium outlet of described reservoir is connected with the refrigerating medium import of liquid pump, the refrigerating medium outlet of described liquid pump is connected with the refrigerating medium import of aerial cooler, the refrigerating medium outlet of described aerial cooler is connected with the refrigerating medium import of evaporative condenser, is provided with blower fan 14 on aerial cooler 13 tops.On reservoir 8, be connected with safety valve 9, on reservoir pressure device 6 shells, be connected with safety valve 10.On the pipeline between liquid pump and the aerial cooler, be connected with flow control valve 12.For accurate control, on the pipeline between flow control valve and the liquid pump, be connected with magnetic valve.The refrigerating medium that carries in the cold circulatory system is a carbon dioxide, and the cold-producing medium in the cooling cycle system be for can produce-60 ℃～-5 ℃ cold-producing medium, and cold-producing medium can be in ammonia, hydrocarbon, carbon dioxide, the azeotropic mixture class any.
Cooling cycle system in the present embodiment comprises compressor 1, condenser 3, evaporative condenser 5, the refrigerant outlet of compressor is connected with the refrigerant inlet of condenser, the refrigerant outlet of condenser is connected with the refrigerant inlet of evaporative condenser, the refrigerant outlet of evaporative condenser is connected with the refrigerant inlet of compressor, be connected with expansion valve 4 on the pipeline between condenser and the evaporative condenser, described compressor is connected with accessory power supply 2 with main power source respectively.Accessory power supply adopts stand-by generator.Described compressor is connected with automatic controller respectively with accessory power supply.
Automatic controller also is connected with safety valve, safety valve, liquid pump, flow control valve, blower fan, the magnetic valve on the reservoir pressure device on equilibrated valve, the reservoir respectively, so that automated system operation.
Cold-producing medium (NH during use
3, CO
2, R22, R134a etc.) enter condenser 3 from compressor 1, enter evaporative condenser 5 through expansion valve 4, absorb CO
2Heat, come back to compressor 1 then.Refrigerating medium CO
2Be condensed in the evaporative condenser 5 in cooling cycle system, flow into CO by reservoir pressure device 6
2 Reservoir 8, sucked in the aerial coolers 13 by liquid pump 11 then, in this cooler with cooling space in object carry out heat exchange, gasification, evaporator strip are walked thermic load simultaneously.Vaporized CO
2Gas flows in the evaporative condenser 5 of cooling cycle system again, is condensed again, and beginning is circulation next time.
When system brought into operation, temperature was higher in the space that is cooled, and regulated CO by flow control valve 12
2Flow, and regulate the rotating speed of aerial cooler fan 14, thereby regulate the pressure that carries the cold circulatory system, make pressure keep a more stable value.
When cooling cycle system is out of service, CO
2The pressure that carries in the reservoir 8 in the cold circulatory system can constantly raise, when this pressure rises to certain certain value P
1The time, can control the compressor 1 of cooling cycle system by automatic controller, make it operation.
When burst accidents such as power failure occurring, with the rising of interior temperature between being cooled, the pressure that carries in the cooling system constantly raises, when pressure reaches certain certain value P
2(P1＜P
2) time, can control the accessory power supply 2 of cooling cycle system by automatic controller, kind of refrigeration cycle is moved under sub-load, thereby reduced the pressure that carries cold circulation.Reach certain certain value P when carrying cold circulating pressure
3(P
1＜P
2＜P
3) time, reservoir pressure device internal pressure balanced valve 7 is opened balance sysmte pressure.CO in reservoir pressure device interior conduit 15
2Pressure is during greater than authorized pressure, and equilibrated valve 7 is opened, and reservoir pressure device 6 carries out the reservoir pressure process, and it is too high to avoid carrying cooling system pressure, and when cooling cycle system normally moves with carrying a cold circulatory system, reservoir pressure device 6 internal pressures are greater than CO
2Pressure in the interior conduit 15, equilibrated valve is opened, CO in the reservoir pressure device
2Enter interior conduit.
Open when reservoir pressure device internal pressure balanced valve, system pressure is still greater than certain certain value P
4(P
1＜P
2＜P
3＜P
4) time, the safety valve 9,10 that carries on the cold circulatory system is opened a part of CO
2Be discharged in the environment, be not more than P until pressure
4
Although relate to a kind of carbon dioxide air cooling system and carried out special description disclosed 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 (5)
1. carbon dioxide air cooling system, form by a cooling cycle system and a year cold circulatory system, it is characterized in that, the cold circulatory system comprised reservoir pressure device, reservoir, liquid pump, aerial cooler and blower fan in described year, described reservoir pressure device comprises shell, be provided with interior conduit in the described shell, be connected with equilibrated valve on the described interior conduit; The refrigerating medium outlet of the evaporative condenser in described interior conduit one end and the described cooling cycle system is connected, the other end of described interior conduit is connected with the refrigerating medium import of reservoir, the refrigerating medium outlet of described reservoir is connected with the refrigerating medium import of liquid pump, the refrigerating medium outlet of described liquid pump is connected with the refrigerating medium import of aerial cooler, the refrigerating medium outlet of described aerial cooler is connected with the refrigerating medium import of evaporative condenser, be provided with blower fan on aerial cooler top, be connected with safety valve respectively on described reservoir and the reservoir pressure device shell, be connected with flow control valve on the pipeline between liquid pump and the aerial cooler, the refrigerating medium that carries in the cold circulatory system is a carbon dioxide.
2. carbon dioxide air cooling system according to claim 1 is characterized in that the cold-producing medium in the cooling cycle system is for can produce-60 ℃～-5 ℃ cold-producing medium.
3. carbon dioxide air cooling system according to claim 1 and 2, it is characterized in that, described cooling cycle system comprises compressor, condenser, evaporative condenser, the refrigerant outlet of compressor is connected with the refrigerant inlet of condenser, the refrigerant outlet of condenser is connected with the refrigerant inlet of evaporative condenser, the refrigerant outlet of evaporative condenser is connected with the refrigerant inlet of compressor, on the pipeline between condenser and the evaporative condenser, be connected with expansion valve, described compressor is connected with accessory power supply with main power source respectively, and described compressor is connected with automatic controller respectively with accessory power supply.
4. carbon dioxide air cooling system according to claim 3, it is characterized in that, be connected with magnetic valve on the pipeline between flow control valve and the liquid pump, automatic controller is connected with safety valve, safety valve, liquid pump, flow control valve, blower fan, the magnetic valve on the reservoir pressure device on equilibrated valve, the reservoir respectively.
5. carbon dioxide air cooling system according to claim 4 is characterized in that, cold-producing medium is any in ammonia, hydrocarbon, carbon dioxide, the azeotropic mixture class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200745442U CN201199103Y (en) | 2008-04-25 | 2008-04-25 | Carbon dioxide air cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200745442U CN201199103Y (en) | 2008-04-25 | 2008-04-25 | Carbon dioxide air cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201199103Y true CN201199103Y (en) | 2009-02-25 |
Family
ID=40450259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200745442U Expired - Fee Related CN201199103Y (en) | 2008-04-25 | 2008-04-25 | Carbon dioxide air cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201199103Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110740A (en) * | 2014-07-25 | 2014-10-22 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN104329860A (en) * | 2014-11-12 | 2015-02-04 | 江苏苏净集团有限公司 | Freezer |
| CN113324351A (en) * | 2021-06-28 | 2021-08-31 | 中国科学技术大学 | Carbon dioxide mixed working medium refrigeration/heat pump system with adjustable components |
| CN113686038A (en) * | 2021-08-27 | 2021-11-23 | 符立物联网(上海)有限公司 | Intelligent cold accumulation refrigerating system and application thereof |
-
2008
- 2008-04-25 CN CNU2008200745442U patent/CN201199103Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110740A (en) * | 2014-07-25 | 2014-10-22 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN104110740B (en) * | 2014-07-25 | 2017-01-11 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN104329860A (en) * | 2014-11-12 | 2015-02-04 | 江苏苏净集团有限公司 | Freezer |
| CN113324351A (en) * | 2021-06-28 | 2021-08-31 | 中国科学技术大学 | Carbon dioxide mixed working medium refrigeration/heat pump system with adjustable components |
| CN113324351B (en) * | 2021-06-28 | 2023-03-10 | 中国科学技术大学 | Carbon dioxide mixed working medium refrigeration/heat pump system with adjustable components |
| CN113686038A (en) * | 2021-08-27 | 2021-11-23 | 符立物联网(上海)有限公司 | Intelligent cold accumulation refrigerating system and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102612611B1 (en) | LNG air conditioning cooling system | |
| CN109682110B (en) | Miniature distributed combined cooling heating power device for sectional solution absorption and control method thereof | |
| CN201229082Y (en) | Supermarket refrigeration system with natural working substance | |
| CN103673384B (en) | Engine exhaust heat refrigeration system | |
| CN201199103Y (en) | Carbon dioxide air cooling system | |
| CN110454897A (en) | A kind of evaporation cooling-solar energy absorption type refrigeration air-conditioning system | |
| CN110118448A (en) | Heat storage and cold accumulation type combustion gas assists solar absorption ammonium hydroxide cold supply system | |
| CN105972858A (en) | System and method for supplying energy and storing energy by utilizing waste heat of air compressor | |
| CN111981555A (en) | Geothermal cascade utilization heating system based on absorption type and vapor compression type heat pumps | |
| CN101266081A (en) | Air-cooling system using carbon dioxide as cold carrier | |
| CN204202062U (en) | With the water-cooled cooling water air conditioner unit of ice-reserving function | |
| CN208887159U (en) | The system freezed using steam condensate waste heat | |
| CN103438609A (en) | Refrigeration system by utilizing tail gas of fishing boat | |
| CN106017178B (en) | A kind of refrigerant hydrate circulation cold storage system | |
| CN204478368U (en) | With the free refrigeration type evaporative condenser handpiece Water Chilling Units of pressure maintenance device | |
| CN211345638U (en) | Air conditioning unit based on indirect evaporative cooling and lithium bromide absorption refrigeration combination | |
| CN205860582U (en) | A kind of liquid storage regulation device and refrigeration system | |
| CN104296286B (en) | Heat source tower refrigerating and heating energy-saving equipment with ice storage and heat storage functions | |
| CN204574584U (en) | A kind of novel energy-saving cooling by wind with pressure maintenance device | |
| CN109282397B (en) | Novel energy storage air conditioning device and method based on air compression refrigeration cycle | |
| CN109548378B (en) | Data center cooling system and heat source tower heat pump coupling system | |
| CN209386598U (en) | A kind of Auto-cascade cycle carbon dioxide air source heat pump | |
| CN209267917U (en) | A kind of heat recovery module data center | |
| CN202470542U (en) | Heat-pump system of low-temperature air heat source | |
| CN113587471A (en) | Cold and hot confession system that allies oneself with of doublestage compression and absorption formula high temperature heat pump complex |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20120425 |