CN204359035U - A kind of middle-size and small-size Frostless ice house refrigerating plant of solution dehumidification composite cold blower fan - Google Patents
A kind of middle-size and small-size Frostless ice house refrigerating plant of solution dehumidification composite cold blower fan Download PDFInfo
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- CN204359035U CN204359035U CN201420726861.3U CN201420726861U CN204359035U CN 204359035 U CN204359035 U CN 204359035U CN 201420726861 U CN201420726861 U CN 201420726861U CN 204359035 U CN204359035 U CN 204359035U
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Abstract
The utility model relates to a kind of middle-size and small-size Frostless ice house refrigerating plant of solution dehumidification composite cold blower fan, and it is that in 0 ~ 5 DEG C, warm freezer and Ku Wen are-5 ~-15 DEG C of low-temperature cold stores that freezer comprises storehouse temperature.Refrigerating plant comprises three subsystems, be respectively cooling cycle system, solution recycle system and air circulation system, capital equipment is refrigeration compressor, condenser, solution condenser, reservoir, solution cooler, air-cooler (A, B), dehumidifier (A, B), the compositions such as regenerator, solution reservoir (dense, rare), gas-liquid separator, solution pump (dense, rare).Solution condenser provides regeneration of waste liquor required heat, solution cooler provides dehumidification solution to cool, dehumidifier A reduces to the dehumidifying of low-temperature cold store circulating air the humidity entering air-cooler B, the circulating air dehumidifying of dehumidifier B centering temperature storehouse reduces the humidity entering air-cooler A, avoids the frosting of air-cooler (A, B) coil surface and freezes.Solution dehumidification technology is used for the circulating air dehumidifying of freezer air-cooler entrance by this patent, reduces air dew point, thoroughly can solve the icing frosting in freezer cooling tube surface, be significant for the stable operation of cold storage locker temperature and cold store energy saving.
Description
Technical field
The utility model relates to freezer refrigerating technical field, is specifically related to a kind of middle-size and small-size Frostless ice house refrigerating plant of solution dehumidification composite cold blower fan.
Technical background
Middle-size and small-size freezer is widely used in land miniature cold storage, boats and ships food stuff refrigerated storage or coastal and inland river small-sized cooling cargo ship and fishery refrigerated carrier.Be mainly used in ox, pig, bird meat and the storage of other agricultural byproducts refrigeratings, temperature to be kept different according to freezer, have high temperature Kuku temperature generally to keep 5 ~+10 DEG C, for store away grain etc., middle Wen Kukuwen generally keeps 0 ~-5 DEG C, for storing veterinary antibiotics or dairy products etc.; Low temperature Kuku temperature generally keeps-5 ~-15 DEG C, for preserving fish, poultry matter etc.
For middle-size and small-size cold storage refrigerating system, general employing freon refrigerant, system capital equipment comprises compressor, condenser, liquid reservoir, Filter dryer, expansion valve, cooling coil and temperature and pressure controller composition, cooling coil is divided into directly cooling and cooling indirectly, no matter be directly cool or indirectly cool, no matter be also nature cooling or quenching, because cooler surface temperature is lower than the dew-point temperature of local air, even in most cases, cooler surface temperature is 0
οbelow C, so condensate water will be separated out when air flows through cooler surface temperature make cooler surface frosting, when particularly refrigerating fruit, vegetables, because air humidity content in storehouse is large, need again supplementary a certain amount of outdoor air, frosting is even more serious, because frost thermal conductivity factor is very poor after cooler surface frosting, add the thermal resistance of cooler surface, evaporation coil frost layer exists makes air conditioner heat transfer deterioration, evaporating temperature reduces, and refrigerating efficiency reduces.
But between its cryogenic freezing, frosting ice formation issues is the difficult problem on refrigeration circle all the time always, in reality, freezer defrosting main method has water spray defrosting, electrically defrosting, hot gas defrosting and machinery defrosting.Often kind of method is all defrost after frosting certain thickness again, causes cooling coil and storehouse air heat transfer system to reduce, and defrost process temperature of ice house raises simultaneously, and cause cold to waste, also meet accident accident sometimes.Wen Dongqiang etc. describe one and utilize freezer defrosting water cold energy scheme in CN200710143693 patent, Lu Mosen etc. introduce a kind of control method and prevent air-cooler surface frosting thickness from exceeding setting value in CN200810238083, specifically measure temperature of ice house and control air-cooler running, measure the running of white surface temperature control refrigeration machine.Lu Mosen etc. introduce and a kind of evaporation coil are positioned over Frostless ice house outside storehouse in CN200710116054 patent, cool salting liquid by evaporation coil, and then in freezer, spray refrigerating medium make to keep high humility and low temperature in storehouse.Although the method can avoid frosting problem in storehouse, because shower nozzle sprays directly in storehouse, cause in storehouse damp everywhere, during storeroom goods, inhomogeneous cooling is serious simultaneously, moreover spray salting liquid is unfavorable for that personnel walk about.Therefore this technology is difficult to promote.
Existing freezer frosting crux is that sub-cooled coil pipe directly directly contacts with air in storehouse, and air humidity excessive caused by therefore in storehouse air dewetting become the key solving coil pipe frosting, dehumidifying technology has dehumidification by condensation, solid absorption to dehumidify and solution dehumidification; Dehumidification by condensation is exactly existing freezer dehumidification cooling mode, solid absorption dehumidifying in recent years and dehumidification by condensation have started to have and patent discloses for operation of heat pump outdoor heat exchanger in winter, utilize salting liquid to after outdoor Cryogenic air dehumidifying in winter as described one in publication CN201410156239, and then the cooled system of suction chamber external heat exchanger is as low-temperature heat source, prevent outdoor heat exchanger in the winter time low temperature time frosting.CN201410156533 describes a kind of solid absorbent to after outdoor Cryogenic air dehumidifying in winter, and temperature raises, after humidity reduces, then with the heat exchange of heat pump outdoor heat exchanger, avoid the frosting of winter low temperature outdoor heat exchanger tube-surface; This patent, based on solution dehumidification technology composite cold blower fan cooling technology, solves the frosting of traditional cold blower fan cooling procedure and freezes.
Summary of the invention
Goal of the invention: not enough and frosting is to refrigeration system influence on system operation for existing freezer Defrost method, and this patent proposes to utilize solution dehumidification technology composite cold blower fan cooling technology to solve freezer defrosting new approaches, efficiently solves cooling coil frosting problem.Efficiently solve cooling coil frosting problem.
Technical scheme: for prior art Problems existing, technical problem to be solved in the utility model to surface during Air flow, icing frosting physical phenomenon does not occur at cooling coil.Technical scheme provided by the utility model for this reason: its step 1. first dehumidifies to suction freezer air, and its humidity is reduced, and temperature slightly raises, and after dehumidifying, air dew point is lower than cooling coil surface temperature.2. allow the rear dry air of dehumidifying blow over cooling coil, significantly send in storehouse after cooling.3. the ventilation of solution air-to-air total heat exchanger is adopted for middle temperature freezer ventilation, reduce refrigeration system load, reach ventilation energy-conservation object again.
Air-treatment mode corresponding to technical scheme is shown in Fig. 1,2, and Fig. 1 is middle temperature storehouse air handling process; Air handling process traditional during dotted line in Fig. 1, the utility model air handling process during solid line.W is outdoor air conditions point, and N is air condition point in storehouse, and L is the air condition point cooling coil, outdoor air shown in O and coil pipe process mixing point, N → L be usual air in coil pipe cooling procedure, W → U is middle temperature storehouse inner air and outer air ventilation process.N → H is the dehumidification process in dehumidifier, H → L be air through cold air device etc. humidity cooling procedure.Same, as shown in Figure 2, in Fig. 2, N → O is conventional air process engineering to the air handling process of low-temperature cold store, and at this moment frosting of freezing occurs on cooling coil surface.Improving processing procedure is N → L → O, first through dehumidifier dehumidification process N → L, and then enters subcooler cooling procedure L → O.
For achieving the above object, the utility model provides a kind of middle-size and small-size Frostless ice house refrigerating plant of solution dehumidification composite cold blower fan to comprise cooling cycle system, solution dehumidification system, the middle warm air circulatory system and the Cryogenic air circulatory system.
Described cooling cycle system comprise connected by refrigerant line single-stage compressor, condenser, solution condenser, cold-producing medium reservoir, gas-liquid separator, solution cooler, thermal expansion choke valve (A and B), pressure-reducing valve (A and B) air-cooler A, air-cooler B.Reservoir inlet ductwork connects solution condenser and condensator outlet, and condenser connects refrigeration system and cooling tower joint equipment; Cold-producing medium reservoir outlet pipeline is divided into three branch roads, a connection solution cooler, and one connects air-cooler A, and the 3rd branch road connects air-cooler B.Gas-liquid separator outlet is divided into two branch roads, and one connects air-cooler B import, a connection pressure-reducing valve.
Described solution dehumidification system comprises the dehumidifier A, dehumidifier B, weak solution reservoir, weak solution pump, solution condenser, solution regenerator, concentrated solution reservoir, the concentrated solution pump that are connected by solution line.Described solution condenser is the joint equipment of the connection of cooling cycle system and solution dehumidification system.Described dehumidifier A air inlet connects Freezing room outbound airduct, and air outlet connects air-cooler A air inlet; Wen Kuku wind tube outlet during described dehumidifier B air inlet connects, air outlet connects air-cooler B air inlet.
Described Freezing room air circulation system comprises the low-temperature cold store, dehumidifier A, the air-cooler A that are connected by airduct.
Described middle temperature storehouse air circulation system comprise connected by airduct in warm freezer, solution total-heat exchanger, dehumidifier B, air-cooler B.Described total-heat exchanger is middle temperature storehouse veterinary antibiotics and personnel's respiratory ventilation.Described solution air-to-air total heat exchanger structure is the combination of unit as shown in Figure 4, is connected with four airducts, and two are connected with in storehouse, and two are connected with outdoor.In realization, the ventilation of warm storehouse is reclaimed the cold in deaeration simultaneously and is displaced by outdoor air moisture.
The utility model device advantage: 1. compared with existing middle-size and small-size freezer, present arrangement avoids the surface frosting of air-cooler cooling coil, freezer running refrigerating coefficient is higher, and temperature of ice house fluctuation is less, and sanitary condition is better.2., compared with existing middle-size and small-size freezer, this device cooling tower burden condensation load is less, and condensation heat is used for solution dehumidification greatly.3., compared with existing middle-size and small-size freezer, middle temperature freezer ventilation cold energy is recycled utilization and solution has purification degermation to air in storehouse, is conducive to food fresh keeping.Accompanying drawing illustrates: Fig. 3 is structured flowchart of the present utility model.
Detailed description of the invention
Concrete explanation is in detail done below in conjunction with accompanying drawing 3 pairs of the utility model.
Mark signal in figure: 1 compressor, 2 solution condensers, 3 refrigeration reservoirs, 4 expansion valve A, 5 solution coolers, 6 expansion valve B, 7 air-cooler B, 8 dehumidifier A, 9 air-cooler A, 10 dehumidifier B, 11 regenerators, 12 solution pump A, 13 concentrated solution reservoirs, 14 solution pump B, 15 pressure-reducing valve A, 16 pressure-reducing valve B, 17 solution air-to-air total heat exchangers, 18 weak solution reservoirs, 19 gas-liquid separators, 20 expansion valve C, between 21 air-coolers, 22 condensers.
This freezer device comprises three circulations: comprise single-stage refrigeration cycle system, solution dehumidification system, the middle warm air circulatory system and the Cryogenic air circulatory system.
Cooling cycle system comprises the compressor (1), condenser (22), solution condenser (2), cold-producing medium reservoir (3), gas-liquid separator (19), solution cooler (5), expansion throttling valve A (20), expansion throttling valve B (6), pressure-reducing valve A (15), pressure-reducing valve B (16), air-cooler A (9), the air-cooler B (7) that are connected by refrigerant line.Reservoir (3) inlet ductwork connects solution condenser (2) and condenser (22) outlet, and condenser 22 connects refrigeration system and cooling tower joint equipment; Reservoir (3) export pipeline is divided into three branch roads, a connection solution cooler (5), and one connects air-cooler A (9), and the 3rd branch road connects air-cooler B (7).Gas-liquid separator (19) outlet is divided into two branch roads, and one connects air-cooler B (7) import, a connection pressure-reducing valve A (15).
Described solution dehumidification system comprises the dehumidifier A (8), dehumidifier B (10), weak solution reservoir (18), weak solution pump (12), solution condenser (5), solution regenerator (11), concentrated solution reservoir (13), the concentrated solution pump (14) that are connected by solution line.Described solution condenser (5) is the joint equipment of the connection of cooling cycle system and solution dehumidification system.Described dehumidifier A (8) air inlet connects Freezing room outbound airduct, and air outlet connects air-cooler A (9) air inlet; Wen Kuku wind tube outlet during described dehumidifier B (10) air inlet connects, air outlet connects air-cooler B (7) air inlet.
Described Freezing room air circulation system comprises the low-temperature cold store, dehumidifier A (8), the air-cooler A (9) that are connected by airduct.
Described middle temperature storehouse air circulation system comprise connected by airduct in warm freezer, solution total-heat exchanger (17), dehumidifier B (10), air-cooler B (7).Described solution total-heat exchanger (17) is middle temperature storehouse veterinary antibiotics and personnel's respiratory ventilation.
The method of operation
Refrigeration system is run: compressor will from air-cooler A (9), air-cooler B (7) and solution cooler out low-pressure low-temperature cold-producing medium suck compressor, be collapsed into HTHP overheated gas, then two are divided into, one enters the cooled tower cold water cooling of condenser (22), another flows into solution condenser and is cooled by weak solution, joining for two flows in cold-producing medium reservoir (3), be divided into three branches afterwards, one of them flows into solution cooler (5) after expansion valve A (4) throttling, evaporative cooling wherein makes concentrated solution cool.Enter gas-liquid separator (19) afterwards, then be divided into again two, wherein a road is inhaled into compressor (1) after the meeting afterwards with the road from air-cooler B (7), air-cooler A (9) after pressure-reducing valve A (19).Cold-producing medium another branch after reservoir (3) is the road flowing into air-cooler B (7), period also will be converged with the road from gas-liquid separator (19) liquid state, the road of being somebody's turn to do provides cold for air-cooler A, and cold wind is used for temperature+2 DEG C of freezer veterinary antibiotics release heat in cooling.The road of the 3rd cold-producing medium after reservoir is the road flowing into air-cooler A (9), and for air-cooler A (9) provides cold, cold wind is for cooling low temperature-12 DEG C of freezer vegetables meat, fish release heat.
Air-treatment: air circulation comprises the air-treatment circulation of middle Wen Ku and Freezing room.
During system cloud gray model, first cooling tower equipment is started, freezer blowing device, solution pump equipment, then compressor is started, when refrigeration system is normally run, solution recycle system also runs simultaneously, solution is circulation like this, first solution is pumped into solution cooler (5) cooling from concentrated solution reservoir (13) by solution pump B (14), then dehumidifier A (8) is entered, dehumidifier B (10), after absorbing air moisture wherein, flow into weak solution reservoir (18), pumped into after condenser heated by solution pump A (12) afterwards, enter dehumidifier (11), solution concentration is thickened by rare, enter concentrated solution dehumidifier (13) afterwards.
Middle temperature storehouse air is such circular treatment, first scavenging air and room air are after solution total-heat exchanger (17), be minimized temperature and humidity, then merge with indoor circulation air, afterwards after dehumidifier A (10), air themperature slightly raises, and the corresponding dew-point temperature of humidity is reduced to air-cooler B (7) heat exchanger tube surface temperature, then after air-cooler A (9) cooling, middle temperature storehouse is admitted to, for absorbing heat in storehouse.
Freezing room air is circulation like this, first circulating air is after dehumidifier B (8), air themperature slightly raises, the corresponding dew-point temperature of humidity is reduced to air-cooler A (9) heat exchanger tube surface temperature, then after air-cooler A (9) cooling, low temperature storehouse is admitted to, for absorbing heat in storehouse.
As long as more than show and describe general principle feature and advantage of the present utility model.Under the prerequisite not departing from the utility model and scope, the utility model also has various changes and modifications, and these changes and improvements all fall into the scope that will protect.The utility model is claimed to be defined by appended claim and equivalent thereof.
Claims (11)
1. the middle-size and small-size Frostless ice house refrigerating plant of a solution dehumidification composite cold blower fan, the technical scheme provided: its step 1. first dehumidifies to suction freezer air, its humidity is reduced, and temperature slightly raises, and after dehumidifying, air dew point is lower than cooling coil surface temperature.2. allow the rear dry air of dehumidifying blow over cooling coil, significantly send in storehouse after cooling.3. the ventilation of solution air-to-air total heat exchanger is adopted for middle temperature freezer ventilation, reduce refrigeration system load, reach ventilation energy-conservation object again.
2., according to the middle-size and small-size Frostless ice house refrigerating plant of a kind of solution dehumidification composite cold blower fan as claimed in claim 1, it is characterized in that comprising cooling cycle system, solution dehumidification system, the middle warm air circulatory system and the Cryogenic air circulatory system.
3. the middle-size and small-size Frostless ice house refrigerating plant of a kind of solution dehumidification composite cold blower fan according to claim 2, cooling cycle system comprise connected by refrigerant line single-stage compressor, condenser, solution condenser, cold-producing medium reservoir, gas-liquid separator, solution cooler, thermal expansion choke valve (A and B), pressure-reducing valve (A and B) air-cooler A, air-cooler B.
4. the middle-size and small-size Frostless ice house refrigerating plant of a kind of solution dehumidification composite cold blower fan according to claim 3, cold-producing medium reservoir is characterized in that inlet ductwork connects solution condenser and condensator outlet, and condenser connects refrigeration system and cooling tower joint equipment.
5. the middle-size and small-size Frostless ice house refrigerating plant of a kind of solution dehumidification composite cold blower fan according to claim 3, cold-producing medium reservoir is characterized in that export pipeline is divided into three branch roads, a connection solution cooler, one connects air-cooler A, and the 3rd branch road connects air-cooler B.
6. the middle-size and small-size Frostless ice house refrigerating plant of a kind of solution dehumidification composite cold blower fan according to claim 3, the gas-liquid separator outlet of requirement is characterized in that being divided into two branch roads, and one connects air-cooler B import, a connection pressure-reducing valve.
7. the middle-size and small-size Frostless ice house refrigerating plant of a kind of solution dehumidification composite cold blower fan according to claim 2, solution dehumidification system comprises the dehumidifier A, dehumidifier B, weak solution reservoir, weak solution pump, solution condenser, solution regenerator, concentrated solution reservoir, the concentrated solution pump that are connected by solution line.Described solution condenser is the joint equipment of the connection of cooling cycle system and solution dehumidification system.Described dehumidifier A air inlet connects Freezing room outbound airduct, and air outlet connects air-cooler A air inlet; Warm storehouse wind tube outlet during described dehumidifier B air inlet connects, air outlet connects air-cooler B air inlet.
8. the middle-size and small-size Frostless ice house refrigerating plant of a kind of solution dehumidification composite cold blower fan according to claim 2, described Freezing room air circulation system comprises the low-temperature cold store, dehumidifier A, the air-cooler A that are connected by airduct.
9. the middle-size and small-size Frostless ice house refrigerating plant of a kind of solution dehumidification composite cold blower fan according to claim 2, middle temperature storehouse air circulation system comprise connected by airduct in warm freezer, solution total-heat exchanger, dehumidifier B, air-cooler B.
10. the middle-size and small-size Frostless ice house refrigerating plant of a kind of solution dehumidification composite cold blower fan according to claim 2, total-heat exchanger it is characterized in that for middle temperature storehouse veterinary antibiotics and personnel's respiratory ventilation.
The middle-size and small-size Frostless ice house refrigerating plant of 11. a kind of solution dehumidification composite cold blower fans according to claim 10, solution air-to-air total heat exchanger is characterized in that structure as shown in Figure 3, it is characterized in that being connected with four airducts, two are connected with in storehouse, and two are connected with outdoor.In realization, the ventilation of warm storehouse is reclaimed the cold in deaeration simultaneously and is displaced by outdoor air moisture.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420726861.3U CN204359035U (en) | 2014-11-27 | 2014-11-27 | A kind of middle-size and small-size Frostless ice house refrigerating plant of solution dehumidification composite cold blower fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420726861.3U CN204359035U (en) | 2014-11-27 | 2014-11-27 | A kind of middle-size and small-size Frostless ice house refrigerating plant of solution dehumidification composite cold blower fan |
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| CN204359035U true CN204359035U (en) | 2015-05-27 |
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| CN201420726861.3U Expired - Fee Related CN204359035U (en) | 2014-11-27 | 2014-11-27 | A kind of middle-size and small-size Frostless ice house refrigerating plant of solution dehumidification composite cold blower fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986451A (en) * | 2019-12-17 | 2020-04-10 | 广州市婵昕生物科技有限责任公司 | A storage equipment that is used for having of meat products defrosting function |
-
2014
- 2014-11-27 CN CN201420726861.3U patent/CN204359035U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986451A (en) * | 2019-12-17 | 2020-04-10 | 广州市婵昕生物科技有限责任公司 | A storage equipment that is used for having of meat products defrosting function |
| CN110986451B (en) * | 2019-12-17 | 2022-01-25 | 广州市婵昕生物科技有限责任公司 | A storage equipment that is used for having of meat products defrosting function |
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Granted publication date: 20150527 Termination date: 20151127 |