CN105571017A - Fresh air processing unit - Google Patents
Fresh air processing unit Download PDFInfo
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- CN105571017A CN105571017A CN201410553848.7A CN201410553848A CN105571017A CN 105571017 A CN105571017 A CN 105571017A CN 201410553848 A CN201410553848 A CN 201410553848A CN 105571017 A CN105571017 A CN 105571017A
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Abstract
The invention discloses a fresh air processing unit, and belongs to the field of air conditioners. The fresh air processing unit solves the problems that an existing fresh air processing unit is complex in structure, high in energy consumption and the like. The fresh air processing unit comprises a unit shell and a compressor; the unit shell comprises a fresh air supplying channel and an air returning and exhausting channel, a fresh air opening and an air supplying opening are formed in the two ends of the fresh air supplying channel, and an air returning opening and an air exhausting opening are formed in the two ends of the air returning and exhausting channel; a first heat exchanger, a reheating coil pipe, a humidifier and a forced draught blower are arranged in the fresh air supplying channel in the fresh air inlet direction; a second heat exchanger and an exhaust fan are arranged in the air returning and exhausting channel in the direction of air returning and exhausting; the compressor, the first heat exchanger and the second heat exchanger are connected through a refrigerant pipe to form a refrigerating/heating system; under the refrigerating mode of the fresh air processing unit, the first heat exchanger is used as an evaporator, and the second heat exchanger is used as a condenser; and under the heating mode of the fresh air processing unit, the first heat exchanger is used as a condenser, and the second heat exchanger is used as the evaporator.
Description
[technical field]
The present invention relates to Fresh air handing unit, belong to field of air conditioning.
[background technology]
Fresh air handing unit is to provide a kind of apparatus of air conditioning of fresh air, it functionally can reach constant temperature and humidity by the requirement of environment for use or provide fresh air merely, the operation principle of Fresh air handing unit after the process such as dedusting, dehumidifying (or humidification), cooling (or intensification), delivers to indoor at outdoor extraction ozone by blower fan, replaces indoor original air when entering the interior space.The recuperation of heat of existing Fresh air handing unit mainly relies on as under type: full heat or sensible heat runner recover, the full heat of fin plate type or sensible heat recoverer, heat-pump-type total heat recovery device and solution-type heat regenerator.Wherein full heat or sensible heat runner recover and the full heat of fin plate type or sensible heat recoverer can not avoid the cross pollution of new wind and air draft, so the gas flow through must be innocuous substance, otherwise can cause cross pollution.Although heat-pump-type total heat recovery device can avoid cross pollution, heat recovery efficiency own is low, and solution-type heat regenerator complex structure, volume are large, solution exists corrosivity, high in cost of production shortcoming.On the other hand, in the occasion that the mobility of peoples such as some multi-purpose markets, cinema, dining room are larger, the needs of resh air requirement are all constantly being changed, and current Fresh air handing unit is all generally fixing air output, if also maintains constant air-supply air quantity when resh air requirement demand diminishes, do not reach energy-conservation requirement.
Existing Fresh air handing unit cannot meet the high requirement of energy saving because its Energy Efficiency Ratio is low, and for increasingly severe energy problem, we need seek more energy-conservation Fresh air handing unit.
[summary of the invention]
Problem to be solved by this invention is just to provide a kind of Fresh air handing unit, makes full use of air return energy, reaches the object of energy-saving consumption-reducing.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
Fresh air handing unit, comprising:
Machine unit shell, has new wind air-supply passage and return air air exhaust passage, and the two ends of described new wind air-supply passage arrange fresh wind port and air outlet respectively, and the two ends of described return air air exhaust passage arrange return air inlet and exhaust outlet respectively;
First Heat Exchanger, again hot coil, humidifier and pressure fan is disposed with in described new wind air-supply passage along new wind air intake direction;
The second heat exchanger and exhaust blower is disposed with in described return air air exhaust passage along return air air draft direction;
Compressor, cooling/heating system is connected to form by refrigerant pipe with described First Heat Exchanger and described second heat exchanger, under Fresh air handing unit refrigeration mode, described First Heat Exchanger uses as evaporimeter, described second heat exchanger uses as condenser, under Fresh air handing unit heating mode, described First Heat Exchanger uses as condenser, and described second heat exchanger uses as evaporimeter.
Wherein, between described new wind air-supply passage and described return air air exhaust passage and near described return air inlet place, be provided with bypass air-valve, outdoor new wind is entered in return air air exhaust passage by described bypass air-valve and mixes with indoor return air.
Wherein, described Fresh air handing unit also comprises ECU, described return air inlet place is provided with gas concentration lwevel sensor, in room conditioning region, wind pressure sensor is set, described ECU regulates the air output of described pressure fan according to the indoor carbon dioxide concentration value that described gas concentration lwevel sensor detects, described ECU regulates the air output of described exhaust blower according to the indoor wind pressure value that described wind pressure sensor detects.
Wherein, described Fresh air handing unit also comprises ECU, described air outlet place is provided with wind pushing temperature sensor, described ECU controls described compressor operating according to the wind pushing temperature that wind pushing temperature sensor detects, in cooling mode, wind pushing temperature process to indoor constant enthalpy point, in a heating mode, wind pushing temperature process is waited warm spot to indoor.
Wherein, described Fresh air handing unit also comprises ECU, and described exhaust outlet place is provided with temperature of outgoing air sensor, and described ECU controls the air output of described exhaust blower and the aperture of described bypass air-valve according to the temperature of outgoing air that temperature of outgoing air sensor detects.
Beneficial effect of the present invention:
Fresh air handing unit of the present invention, utilizes the condensating wind of air draft as cooling/heating system of low temperature, and utilizes the evaporative air of air draft as cooling/heating system of high temperature winter, reach energy-conservation object in summer.Recuperation of heat and refrigeration system unite two into one, and structure is simple, without the need to increasing heat recovery component in addition.Two heat exchangers are used separately as evaporimeter and condenser, and independent separately design, in heat recycle process, new wind and air draft do not have cross pollution.
When cooling in summer operating mode, indoor air draft is used for the condensation side air of unit, significantly reduces unit condensation temperature, improves unit operation operating mode, drastically increase the reliability of equipment; In the winter time during heating condition, utilize return air to replace outdoor air as thermal source, evaporimeter is evaporated, significantly improves the evaporating temperature of unit, without the need to defrosting under regular situation, its coefficient of performance is improved; And run at transition season Fresh air handing unit air vent mode, only drive pressure fan and exhaust blower, compressor, humidifier are all closed, and save energy consumption.
By the setting of gas concentration lwevel sensor and wind pressure sensor, when detecting that gas concentration lwevel becomes large, then illustrate that the quantitative change of indoor fresh air demand is large, ECU promotes the frequency of pressure fan, increase the air output in the unit interval of pressure fan, thus increase new wind air circulation, meet IAQ; And when detecting that gas concentration lwevel diminishes, then illustrate that indoor fresh air demand diminishes, ECU reduces pressure fan frequency, reduces the air output in the unit interval of pressure fan, thus reduce new wind air circulation, while meeting IAQ, in turn save the energy.Exhaust blower, then according to the wind pressure value interlock process of wind pressure sensor feedback, ensures the pressure-fired of air-conditioned room or tiny structure or equipressure.
Fresh air handing unit process new wind load of the present invention, do not bear the hot humidity load in room, ECU controls described compressor operating according to the wind pushing temperature that wind pushing temperature sensor detects, in cooling mode, wind pushing temperature process to indoor constant enthalpy point, in a heating mode, wind pushing temperature process is waited warm spot to indoor.
These features of the present invention and advantage will detailed description of the invention below, exposure detailed in accompanying drawing.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is the structural representation of Fresh air handing unit of the present invention.
[detailed description of the invention]
The technical scheme of accompanying drawing to the embodiment of the present invention below in conjunction with the embodiment of the present invention is explained and illustrated, but following embodiment is only the preferred embodiments of the present invention, and not all.Based on the embodiment in embodiment, those skilled in the art under the prerequisite not making creative work obtain other embodiments, all belong to protection scope of the present invention.
With reference to Fig. 1, the Fresh air handing unit that the embodiment of the present invention provides, comprise: machine unit shell, there is new wind air-supply passage and return air air exhaust passage, the two ends of described new wind air-supply passage arrange fresh wind port 41 and air outlet 11 respectively, and the two ends of return air air exhaust passage arrange return air inlet 51 and exhaust outlet 21 respectively; First Heat Exchanger 33, reheating coil pipe 32, humidifier 31 and pressure fan 12 is disposed with in described new wind air-supply passage along new wind air intake direction; The second heat exchanger 35 and exhaust blower 22 is disposed with in return air air exhaust passage along return air air draft direction; Compressor 34, cooling/heating system is connected to form by refrigerant pipe with described First Heat Exchanger 33 and described second heat exchanger 35, under Fresh air handing unit refrigeration mode, described First Heat Exchanger 33 uses as evaporimeter, described second heat exchanger 35 uses as condenser, under Fresh air handing unit heating mode, described First Heat Exchanger 33 uses as condenser, and described second heat exchanger 35 uses as evaporimeter.
During practical application, Fresh air handing unit of the present invention can be divided into five modules, be divided into air supply section 1, exhaustion section 2, cooling/heating system section 3, new wind section 4, air return section 5 respectively, these five block combiner become to together, form collection Fresh air handing, exhaust air energy recovery, exhaust system integration unit.Fragmented transport or Assembling, cooling/heating system, as an independent entirety, does not need scene connecting leg again, convenient installation and maintenance.
Owing to being module independent assortment, Fresh air handing unit of the present invention can realize ceiling mounting type installation according to the installation requirement at scene, cabinet-type is installed and horizontal floor is installed.
Schematic diagram given by the embodiment of the present invention, only wherein a kind of preferred compositions scheme of Fresh air handing unit of the present invention: air supply section 1 and exhaustion section 2 are positioned at the left side of cooling/heating system section 3, new wind section 4 and air return section 5 are positioned at the right side of cooling/heating system section 3, and each module has unit casing.After block combiner, air supply section 1, cooling/heating system section 3, new wind section 4 define new wind air-supply passage, exhaustion section 2, cooling/heating system section 3, air return section 5 define return air air exhaust passage, wherein, the unit casing of new wind section 4 is provided with fresh wind port 41, the unit casing of air supply section 1 is provided with air outlet 11, the unit casing of exhaustion section 2 is provided with exhaust outlet 21, the unit casing of air return section 5 is provided with return air inlet 51.Be connected ajutage 7 between air outlet 11 with room conditioning region 6, between return air inlet 51 with room conditioning region 6, be connected backwind tube 8.In the embodiment of the present invention, new wind air-supply passage and return air air exhaust passage aqueous phase are to independently, and make like this in heat recycle process, new wind and air draft do not have cross pollution.Avoid the cross pollution of bacterium or foul smell.
The present embodiment is also arranging be provided with bypass air-valve 43 near return air inlet 51 place between new wind air-supply passage and return air air exhaust passage, outdoor new wind is entered in return air air exhaust passage by bypass air-valve 43 and mixes with indoor return air, in case there is a need, return air air quantity is increased.
In prior art, by the analysis to kind of refrigeration cycle, the approach of air conditioner energy saving is proposed mainly: adopt high-efficient compressor, make compression process close to isentropic Compression; Reduce condensation temperature and condensing pressure; Improve evaporating temperature and evaporating pressure.For air-cooled, for condenser side, when environment temperature reduces time, condenser and environment heat transfer temperature difference large, good effect of heat exchange, high-temperature high-pressure refrigerant heat radiation is many, and liquefaction effect is good, can fully keep certain degree of supercooling, evaporation endothermic after choke valve throttling, on the other hand, the liquid that condensation obtains is more, many in vaporizer side evaporation.Refrigerating capacity strengthens, and cop improves; For vaporizer side, after environment temperature raises, under the condition that evaporating temperature is constant, heat transfer temperature difference strengthens, and heat exchange amount increases, and evaporation quantitative change is large, and press sucks more steam, and refrigerating capacity increases equally.
Above-mentioned principle is applied in the embodiment of the present invention:
Fresh air handing unit is when cooling in summer runs, under pressure fan 12 acts on, the new wind of outdoor high temperature high humidity enters new wind air-supply passage from fresh wind port 41, the new wind of major part is through filter dust removal and filtration, lowered the temperature by First Heat Exchanger 33 successively again, dehumidify, reheating coil pipe 32 heats, after reaching the humiture of user's setting, after humidifier 31, deliver to room conditioning region 6 by pressure fan 12.Meanwhile, indoor low temperature return air through filter dust removal and filtration, then is heated up by the second heat exchanger 35, drains into outdoor through exhaust blower 22 after mixing with the new wind being entered return air air exhaust passage by bypass air-valve 43 under exhaust blower 22 acts on.Second heat exchanger 35 is used as condenser, second heat exchanger 35 is air-cooled solidifying by mixing of the new wind in indoor low temperature return air and outdoor, and the cold in indoor low temperature return air is recovered utilization, reduces the condensation temperature of whole Fresh air handing unit, corresponding condensing pressure step-down, the energy consumption of compressor 34 reduces.
Fresh air handing unit in the winter time heating operation time, under pressure fan 12 acts on, the new wind of outdoor low temperature enters new wind air-supply passage from fresh wind port 41, the new wind of major part through filter dust removal and filtration, then is heated up by First Heat Exchanger 33 successively, deliver to room conditioning region 6 by pressure fan 12 after reheating coil pipe 32, humidifier 31 humidification.Meanwhile, after indoor high temperature return air mixes with the new wind being entered return air air exhaust passage by bypass air-valve 43 under exhaust blower 22 acts on, through filter dust removal and filtration, then after being absorbed heat cooling by the second heat exchanger 35, drain into outdoor through exhaust blower 22.Second heat exchanger 35 is used as evaporimeter, the indoor high temperature return air of refrigerant suction and the heat of the new wind mixing in outdoor wind in second heat exchanger 35 and evaporate, heat in indoor high temperature return air is recovered utilization, improve the evaporating temperature of whole Fresh air handing unit, and along with the reduction of the new air temperature in outdoor, unit condensing pressure reduces, unit power consumption reduces, the decay of unit heating capacity is not obvious, efficient energy-saving.
At transition season, when Fresh air handing unit air vent mode runs, only drive pressure fan 12 and exhaust blower 22, compressor 34, humidifier 31, bypass air-valve 43 are all closed, and save energy consumption.
In the embodiment of the present invention, also gas concentration lwevel sensor 54 is set at return air inlet 51 place, wind pressure sensor 61 is set in room conditioning region 6, the porch of return air air exhaust passage is provided with ECU 53, ECU 53 regulates the air output of pressure fan 12 according to the indoor carbon dioxide concentration value that gas concentration lwevel sensor 54 detects, ECU 53 regulates the air output of exhaust blower 22 according to the indoor wind pressure value that wind pressure sensor 61 detects.Air outlet 11 place is provided with wind pushing temperature sensor 13, ECU 53 controls described compressor 34 according to the wind pushing temperature that wind pushing temperature sensor 13 detects and works, in cooling mode, wind pushing temperature process to indoor constant enthalpy point, in a heating mode, wind pushing temperature process is waited warm spot to indoor; Exhaust outlet 21 place is provided with temperature of outgoing air sensor 23, and the temperature of outgoing air that ECU 53 detects according to temperature of outgoing air sensor 23 controls the air output of exhaust blower 22 and the aperture of bypass air-valve 43.
During embody rule: when room conditioning region 6 gas concentration lwevel becomes large, illustrate that the new wind demand quantitative change in room conditioning region 6 is large, the now detection signal that feeds back according to gas concentration lwevel sensor 54 of ECU 53, carry out Intelligent treatment, promote the frequency of pressure fan 12, increase the air output in the unit interval of pressure fan 12, thus increase new wind air circulation, meet IAQ.And when room conditioning region 6 gas concentration lwevel diminishes, then illustrate that the new wind demand in room conditioning region 6 diminishes, the now detection signal that feeds back according to gas concentration lwevel sensor 54 of ECU 53, carry out Intelligent treatment, reduce the frequency of pressure fan 12, reduce the air output in pressure fan 12 unit interval, thus reduce new wind air circulation, while meeting IAQ, in turn save the energy.In the process, the wind pressure value interlock process in the room conditioning region 6 that exhaust blower 22 can feed back according to wind pressure sensor 61, thus the pressure-fired in guarantee room conditioning region 6, tiny structure or isobaric environment.
During Fresh air handing unit refrigerating operaton, air circulation increase can cause wind pushing temperature to uprise, and the wind pushing temperature value intelligence that compressor 34 feeds back according to wind pushing temperature sensor 13 loads, wind pushing temperature process to indoor constant enthalpy point; During Fresh air handing unit heating operation, air circulation increase can cause wind pushing temperature step-down, and the wind pushing temperature intelligence that compressor 34 feeds back according to wind pushing temperature sensor 13 loads, and wind pushing temperature process is waited warm spot to indoor.
Above-mentioned compressor 34, pressure fan 12, exhaust blower 22 all adopt Frequency Conversion Design, so that unit changes the operating frequency of compressor 34, pressure fan 12 and exhaust blower 22 according to actual condition, better meet consumers' demand.By intelligent frequency-conversion, constant enthalpy air-supply when making unit refrigerating operaton, isothermal air-supply during heating operation.
During Fresh air handing unit refrigerating operaton, temperature of outgoing air sensor 23 detects the temperature of outgoing air of unit, and when detecting that temperature of outgoing air is too high, illustrate that unit condensation temperature is high, compressor 34 efficiency is low.Now ECU 53 controls exhaust blower 22 raising frequency, increases bypass air-valve 43 aperture simultaneously, ensure that return air air quantity is constant, and the new wind air quantity of bypass becomes large, thus increases condensation air quantity, reduce the condensing pressure of unit, ensures that compressor 34 high energy efficiency is run.
Fresh air handing unit of the present invention, when transition season uses, can be opened reheating coil pipe 32 and heat up, arrive energy-conservation object while dehumidifying; Above-mentioned compressor 34 can adopt plural parallel stage compressor or frequency-changeable compressor; Reheating coil pipe 32 can adopt water coil, realizes humiture and is separated control.
The embodiment of the present invention is applied to air-conditioning system, such as Fresh air handing unit.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and is familiar with this those skilled in the art and should be understood that and the present invention includes but the content being not limited to accompanying drawing and describing in detailed description of the invention above.Any amendment not departing from function and structure principle of the present invention all will comprise within the scope of the appended claims.
Claims (5)
1. Fresh air handing unit, is characterized in that comprising:
Machine unit shell, has new wind air-supply passage and return air air exhaust passage, and the two ends of described new wind air-supply passage arrange fresh wind port and air outlet respectively, and the two ends of described return air air exhaust passage arrange return air inlet and exhaust outlet respectively;
First Heat Exchanger, again hot coil, humidifier and pressure fan is disposed with in described new wind air-supply passage along new wind air intake direction;
The second heat exchanger and exhaust blower is disposed with in described return air air exhaust passage along return air air draft direction;
Compressor, cooling/heating system is connected to form by refrigerant pipe with described First Heat Exchanger and described second heat exchanger, under Fresh air handing unit refrigeration mode, described First Heat Exchanger uses as evaporimeter, described second heat exchanger uses as condenser, under Fresh air handing unit heating mode, described First Heat Exchanger uses as condenser, and described second heat exchanger uses as evaporimeter.
2. Fresh air handing unit as claimed in claim 1, it is characterized in that: between described new wind air-supply passage and described return air air exhaust passage and near described return air inlet place, be provided with bypass air-valve, outdoor new wind is entered in return air air exhaust passage by described bypass air-valve and mixes with indoor return air.
3. Fresh air handing unit as claimed in claim 2, it is characterized in that: described Fresh air handing unit also comprises ECU, described return air inlet place is provided with gas concentration lwevel sensor, in room conditioning region, wind pressure sensor is set, described ECU regulates the air output of described pressure fan according to the indoor carbon dioxide concentration value that described gas concentration lwevel sensor detects, described ECU regulates the air output of described exhaust blower according to the indoor wind pressure value that described wind pressure sensor detects.
4. Fresh air handing unit as claimed in claim 2, it is characterized in that: described Fresh air handing unit also comprises ECU, described air outlet place is provided with wind pushing temperature sensor, described ECU controls described compressor operating according to the wind pushing temperature that wind pushing temperature sensor detects, in cooling mode, wind pushing temperature process to indoor constant enthalpy point, in a heating mode, wind pushing temperature process is waited warm spot to indoor.
5. Fresh air handing unit as claimed in claim 2, it is characterized in that: described Fresh air handing unit also comprises ECU, described exhaust outlet place is provided with temperature of outgoing air sensor, and described ECU controls the air output of described exhaust blower and the aperture of described bypass air-valve according to the temperature of outgoing air that temperature of outgoing air sensor detects.
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CN105890070A (en) * | 2016-06-01 | 2016-08-24 | 江苏慧居建筑科技有限公司 | Multi-condenser and double-return-air bypass dehumidification fresh air unit and air conditioning method |
CN106765559A (en) * | 2016-11-29 | 2017-05-31 | 美的集团武汉制冷设备有限公司 | Air-conditioning and air-purifying humidification equipment linkage system and its control method |
CN107036198A (en) * | 2017-03-21 | 2017-08-11 | 李元哲 | Air source heat pump New-air purifying system |
CN107490121A (en) * | 2017-09-19 | 2017-12-19 | 山东凯丰节能科技有限公司 | A kind of Fresh air handling units |
CN108253554A (en) * | 2017-12-15 | 2018-07-06 | 同济大学 | It is a kind of to be subcooled plus mix the air-cooled new wind turbine of solidifying heat pump heat reclamation type using return air |
CN108458424A (en) * | 2018-03-12 | 2018-08-28 | 江苏吉祥空调设备有限公司 | A kind of multifunctional new wind air conditioner integrated unit |
CN108489251A (en) * | 2018-06-11 | 2018-09-04 | 南京农业大学 | A kind of pump type heat low-temperature circulating formula crop dryer of waste heat recoverable |
CN108534311A (en) * | 2018-04-26 | 2018-09-14 | 广州艾思高能源科技有限公司 | A kind of fresh air adjusting method based on air fine particles |
CN109751700A (en) * | 2017-08-23 | 2019-05-14 | 河北蓝海风科技有限公司 | Passive House environment self-adaption cloud control fresh air system |
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CN110567083A (en) * | 2019-09-06 | 2019-12-13 | 天津大学 | Combined air conditioner with fresh air heat pump and heat pipe for two-stage waste heat recovery |
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CN114738857A (en) * | 2022-04-29 | 2022-07-12 | 广东申菱环境系统股份有限公司 | Dehumidification unit capable of realizing low temperature and low humidity and control method thereof |
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CN105890070B (en) * | 2016-06-01 | 2018-09-28 | 江苏慧居建筑科技有限公司 | The dehumidification fresh air group and air conditioning method of more condensers and double back wind bypass |
CN105890070A (en) * | 2016-06-01 | 2016-08-24 | 江苏慧居建筑科技有限公司 | Multi-condenser and double-return-air bypass dehumidification fresh air unit and air conditioning method |
CN106765559A (en) * | 2016-11-29 | 2017-05-31 | 美的集团武汉制冷设备有限公司 | Air-conditioning and air-purifying humidification equipment linkage system and its control method |
CN106765559B (en) * | 2016-11-29 | 2020-08-14 | 美的集团武汉制冷设备有限公司 | Air conditioner and air purification and humidification equipment linkage system and control method thereof |
CN107036198A (en) * | 2017-03-21 | 2017-08-11 | 李元哲 | Air source heat pump New-air purifying system |
CN109751700A (en) * | 2017-08-23 | 2019-05-14 | 河北蓝海风科技有限公司 | Passive House environment self-adaption cloud control fresh air system |
CN107490121A (en) * | 2017-09-19 | 2017-12-19 | 山东凯丰节能科技有限公司 | A kind of Fresh air handling units |
CN107490121B (en) * | 2017-09-19 | 2023-05-09 | 山东凯丰节能科技股份有限公司 | Fresh air unit |
CN108253554A (en) * | 2017-12-15 | 2018-07-06 | 同济大学 | It is a kind of to be subcooled plus mix the air-cooled new wind turbine of solidifying heat pump heat reclamation type using return air |
CN108458424A (en) * | 2018-03-12 | 2018-08-28 | 江苏吉祥空调设备有限公司 | A kind of multifunctional new wind air conditioner integrated unit |
CN108534311A (en) * | 2018-04-26 | 2018-09-14 | 广州艾思高能源科技有限公司 | A kind of fresh air adjusting method based on air fine particles |
CN108489251A (en) * | 2018-06-11 | 2018-09-04 | 南京农业大学 | A kind of pump type heat low-temperature circulating formula crop dryer of waste heat recoverable |
CN108489251B (en) * | 2018-06-11 | 2023-08-29 | 南京农业大学 | Heat pump type low-temperature circulating grain drier capable of recycling waste heat |
CN110081578A (en) * | 2019-04-16 | 2019-08-02 | 上海建工集团股份有限公司 | A kind of heat exchanger and control method with by-pass line of intelligent control |
CN110567083A (en) * | 2019-09-06 | 2019-12-13 | 天津大学 | Combined air conditioner with fresh air heat pump and heat pipe for two-stage waste heat recovery |
CN110529963A (en) * | 2019-09-06 | 2019-12-03 | 江苏三一环境科技有限公司 | A kind of dust removal by ventilation purification system |
CN112032873A (en) * | 2020-08-27 | 2020-12-04 | 宁波奈兰环境系统有限公司 | Integrated ambient air treatment device for medical negative pressure isolation cabin |
CN112665082A (en) * | 2020-12-23 | 2021-04-16 | 重庆海润节能技术股份有限公司 | Multi-channel efficient integrated ventilator unit with heat exchange compensation function and control method |
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CN114738857A (en) * | 2022-04-29 | 2022-07-12 | 广东申菱环境系统股份有限公司 | Dehumidification unit capable of realizing low temperature and low humidity and control method thereof |
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Application publication date: 20160511 |