CN101261024A - Air Conditioning Unit Device and Air Treatment Method for Heat and Humidity Sectional Treatment - Google Patents

Air Conditioning Unit Device and Air Treatment Method for Heat and Humidity Sectional Treatment Download PDF

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CN101261024A
CN101261024A CNA2008100238832A CN200810023883A CN101261024A CN 101261024 A CN101261024 A CN 101261024A CN A2008100238832 A CNA2008100238832 A CN A2008100238832A CN 200810023883 A CN200810023883 A CN 200810023883A CN 101261024 A CN101261024 A CN 101261024A
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chilled water
surface cooler
heat
evaporator
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CN100552312C (en
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梁彩华
张小松
蒋赟昱
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Southeast University
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Abstract

热湿分段处理空调机组装置的空气处理方法分两部分,其中:热湿分段处理的空气处理方法是:室内回风与新风混合后首先经过第一表冷器(3)与高温冷冻水换热,经等湿降温到露点温度,除去大部分显热负荷后进入第二表冷器(4);在第二表冷器(4)中,空气与低温冷冻水进一步换热,降温并产生凝结水,除去湿负荷;降温除湿后的空气经加热器(5)、加湿器(6)处理到送风状态点,最终经风机(7)加压后送入空调房间;空调机组装置所采取的方法是:第一冷水机组中制冷剂在被第一压缩机(11)压缩排出后进入冷凝器(12)冷凝,然后经过第一储液罐(13)和第一过滤器(14)被第一电子膨胀阀(15)节流降压后,进入第一蒸发器(10)与冷冻水进行换热。

Figure 200810023883

The air treatment method of the air conditioning unit is divided into two parts, among which: the air treatment method of the heat and humidity section treatment is: after the indoor return air is mixed with the fresh air, it first passes through the first surface cooler (3) and high-temperature chilled water Heat exchange, cooling down to the dew point temperature after isohumidity, removing most of the sensible heat load, and then entering the second surface cooler (4); Condensed water is generated to remove the humidity load; the air after cooling and dehumidification is processed to the air supply state point by the heater (5) and humidifier (6), and finally sent to the air-conditioned room after being pressurized by the fan (7); The method adopted is: the refrigerant in the first chiller unit enters the condenser (12) to condense after being compressed and discharged by the first compressor (11), and then passes through the first liquid storage tank (13) and the first filter (14) After being throttled and depressurized by the first electronic expansion valve (15), it enters the first evaporator (10) to exchange heat with chilled water.

Figure 200810023883

Description

热湿分段处理的空调机组装置及其空气处理方法 Air Conditioning Unit Device and Air Treatment Method for Heat and Humidity Sectional Treatment

技术领域 technical field

本发明涉及一种空调负荷分段处理的空气处理方法及其实现这种方法的装置,属于制冷、空调系统设计和制造的技术领域。The invention relates to an air treatment method for segmental treatment of air-conditioning loads and a device for realizing the method, and belongs to the technical field of design and manufacture of refrigeration and air-conditioning systems.

背景技术 Background technique

空调负荷可分为显热负荷和湿负荷(潜热负荷),空气处理过程中的湿负荷处理方法主要有降温除湿、溶液除湿、吸附除湿等。受到各方面因素制约,降温除湿仍然是目前使用最普遍的空调湿负荷处理方法。The air conditioning load can be divided into sensible heat load and humidity load (latent heat load). The humidity load treatment methods in the air treatment process mainly include cooling and dehumidification, solution dehumidification, adsorption dehumidification, etc. Restricted by various factors, cooling and dehumidification is still the most commonly used method to deal with the humidity load of air conditioners.

降温除湿方法是采用较低温度的冷冻水对空气进行一次性降温除湿处理,将其处理至所需的饱和状态,然后再通过加热将空气升温至送风状态。在这种方式中,空调负荷中的显热负荷和湿负荷都是采用低温冷冻水进行处理,而为了兼顾除湿的需求,冷冻水温度必须足够低(7℃左右),导致冷水机组的蒸发温度无法提高,空调机组能效比较低,经济性较差,机组耗能量大。The method of cooling and dehumidification is to use cold water at a lower temperature to perform one-time cooling and dehumidification treatment on the air, and process it to the required saturation state, and then heat the air to the air supply state by heating. In this way, the sensible heat load and humidity load in the air-conditioning load are treated with low-temperature chilled water, and in order to meet the needs of dehumidification, the temperature of the chilled water must be low enough (about 7°C), resulting in the evaporation temperature of the chiller It cannot be improved, the energy efficiency of the air conditioning unit is relatively low, the economy is poor, and the unit consumes a lot of energy.

发明内容 Contents of the invention

技术问题:本发明的目的是为解决现有一次性降温除湿空调装置所存在的蒸发温度低、制冷机组能效比难以提升的问题,提供一种实现空调负荷分段处理,节能高效的热湿分段处理的空调机组装置及其空气处理方法。Technical problem: The purpose of the present invention is to solve the problems of low evaporation temperature and difficulty in improving the energy efficiency ratio of refrigeration units existing in the existing one-time cooling and dehumidification air-conditioning device, and to provide a heat-humidifier that realizes segmental processing of air-conditioning loads and is energy-saving and efficient. Air-conditioning unit device for stage treatment and air treatment method thereof.

技术方案:本发明热湿分段处理的空调机组装置包括空气处理部分和冷水机组部分。空气处理部分由第一表冷器、第二表冷器、加热器、加湿器、风机顺序连接而成。冷水机组部分包括第一冷水机组和第二冷水机组两部分,两个冷水机组共用一个冷凝器。第一冷水机组用于制备高温冷冻水,其设备按连接顺序依次为第一压缩机、冷凝器、第一储液罐、第一过滤器、第一电子膨胀阀、第一蒸发器,第一蒸发器又与第一压缩机相连构成回路,其中高温冷冻水部分从第一蒸发器出发,经第三电磁阀、第一表冷器、第一电磁阀、第一水泵再回到第一蒸发器。第二冷水机组用于制备高温冷冻水,其设备按连接顺序依次为第二压缩机、冷凝器、第二储液罐、第二过滤器、第二电子膨胀阀、第二蒸发器,第二蒸发器又与第二压缩机相连构成回路,其中低温冷冻水部分从第二蒸发器出发,经第二表冷器,再经第二电磁阀、第二水泵回到第二蒸发器。在第一表冷器和第二表冷器的冷冻水进出口处增设了第三电磁阀、第四电磁阀、第五电磁阀,通过调节3个电磁阀的开闭,使第一表冷器、第二表冷器可实现串联通入高温冷冻水。Technical solution: The air-conditioning unit device for heat and humidity staged treatment in the present invention includes an air treatment part and a water chiller part. The air processing part is composed of a first surface cooler, a second surface cooler, a heater, a humidifier, and a fan connected in sequence. The chiller part includes two parts, the first chiller and the second chiller, and the two chillers share a condenser. The first water chiller is used to prepare high-temperature chilled water, and its equipment is the first compressor, condenser, first liquid storage tank, first filter, first electronic expansion valve, first evaporator, first The evaporator is connected with the first compressor to form a circuit, in which the high-temperature chilled water starts from the first evaporator, passes through the third electromagnetic valve, the first surface cooler, the first electromagnetic valve, and the first water pump and then returns to the first evaporator. device. The second chiller is used to prepare high-temperature chilled water, and its equipment is the second compressor, the condenser, the second liquid storage tank, the second filter, the second electronic expansion valve, the second evaporator, and the second The evaporator is connected with the second compressor to form a circuit, wherein the low-temperature chilled water starts from the second evaporator, passes through the second surface cooler, and returns to the second evaporator through the second solenoid valve and the second water pump. A third solenoid valve, a fourth solenoid valve, and a fifth solenoid valve are added at the chilled water inlet and outlet of the first surface cooler and the second surface cooler. By adjusting the opening and closing of the three solenoid valves, the first surface cooler The device and the second surface cooler can be connected in series to high-temperature chilled water.

本发明热湿分段处理的空气处理方法是:室内回风与新风混合后首先经过第一表冷器与高温冷冻水换热,经等湿降温到接近露点温度,除去大部分显热负荷后进入第二表冷器;在第二表冷器中,空气与低温冷冻水进一步换热,降温并产生凝结水,除去湿负荷;降温除湿后的空气经加热器、加湿器处理到送风状态点,最终经风机加压后送入空调房间。The air treatment method of heat and humidity sectional treatment in the present invention is: after the indoor return air is mixed with the fresh air, it first passes through the first surface cooler to exchange heat with high-temperature refrigerated water, then cools down to a temperature close to the dew point through isohumidity, and removes most of the sensible heat load Enter the second surface cooler; in the second surface cooler, the air further exchanges heat with low-temperature chilled water, cools down and generates condensed water, and removes the humidity load; the air after cooling and dehumidification is processed by the heater and humidifier to the air supply state point, and finally sent to the air-conditioned room after being pressurized by the fan.

本发明热湿分段处理的空调机组装置所采取的方案是:第一冷水机组中制冷剂在被第一压缩机压缩排出后进入冷凝器冷凝,然后经过第一储液罐和第一过滤器,再被第一电子膨胀阀节流降压后,进入第一蒸发器与冷冻水进行换热,制冷剂吸热蒸发,同时冷冻水温度降低,制取高温冷冻水,制冷剂完全蒸发后再次被第一压缩机吸入压缩,从而实现循环。高温冷冻水在第一水泵的驱动下经第三电磁阀流入第一表冷器,与空气进行换热,吸收空气中的显热,然后经第一电磁阀、第一水泵回到第一蒸发器。第二冷水机组中制冷剂在被第二压缩机压缩排出后进入冷凝器冷凝,然后经过第二储液罐和第二过滤器,再被第二电子膨胀阀节流降压后进入第二蒸发器,制冷剂与冷冻水换热,吸热制取低温冷冻水,制冷剂完全蒸发后被第二压缩机再次吸入,从而完成循环。低温冷冻水受到第二水泵的驱动流入第二表冷器,吸收空气中的潜热,自身温度升高,然后经第二电磁阀、第二水泵回到第二蒸发器。The scheme adopted by the heat-humidity segmental treatment air conditioning unit device of the present invention is: the refrigerant in the first chiller unit enters the condenser to condense after being compressed and discharged by the first compressor, and then passes through the first liquid storage tank and the first filter , after being throttled and depressurized by the first electronic expansion valve, it enters the first evaporator to exchange heat with the chilled water. It is sucked and compressed by the first compressor, thereby realizing a cycle. Driven by the first water pump, the high-temperature chilled water flows into the first surface cooler through the third electromagnetic valve, exchanges heat with the air, absorbs sensible heat in the air, and then returns to the first evaporator through the first electromagnetic valve and the first water pump. device. In the second chiller, the refrigerant enters the condenser to condense after being compressed and discharged by the second compressor, then passes through the second liquid storage tank and the second filter, and is throttled and depressurized by the second electronic expansion valve before entering the second evaporation The refrigerant exchanges heat with the chilled water, and absorbs heat to produce low-temperature chilled water. After the refrigerant is completely evaporated, it is re-inhaled by the second compressor, thus completing the cycle. Driven by the second water pump, the low-temperature chilled water flows into the second surface cooler, absorbs latent heat in the air, raises its own temperature, and then returns to the second evaporator through the second solenoid valve and the second water pump.

针对空调机组有较多时间在部分负荷、低湿负荷下运行,本发明设计出部分负荷、低湿负荷工况下的节能运行方案:在部分、低湿负荷工况下,第二冷水机组停止工作,不制备低温冷冻水。第一冷水机组正常工作,第二电磁阀、第三电磁阀关闭,第四电磁阀、第五电磁阀开启,第一表冷器、第二表冷器形成串联。高温冷冻水从第一蒸发器出发,在第一水泵的驱动下经第五电磁阀进入第二表冷器,流出后再经第四电磁阀流入第一表冷器,出来后经第一电磁阀、第一水泵回到第一蒸发器。此时的空气处理过程为:室内回风与新风混合后经过第一表冷器、第二表冷器与高温冷冻水换热,降温除湿,然后经加热器、加湿器处理到送风状态点,最终经风机加压后送入空调房间。此时通过调节第一水泵的转速,即改变高温冷冻水的流量(流量变小,第一蒸发器的出水温度将相应降低,流量变大则相反),实现高温冷冻水承担小部分除湿负荷。In view of the fact that the air conditioning unit has more time to operate under partial load and low humidity load, the present invention designs an energy-saving operation scheme under partial load and low humidity load conditions: under partial and low humidity load conditions, the second chiller stops working and does not Prepare low temperature chilled water. The first chiller works normally, the second solenoid valve and the third solenoid valve are closed, the fourth solenoid valve and the fifth solenoid valve are opened, and the first surface cooler and the second surface cooler are connected in series. High-temperature chilled water starts from the first evaporator, driven by the first water pump, enters the second surface cooler through the fifth electromagnetic valve, flows out and then flows into the first surface cooler through the fourth electromagnetic valve, and then passes through the first electromagnetic valve, the first water pump returns to the first evaporator. The air treatment process at this time is: after the indoor return air is mixed with the fresh air, it passes through the first surface cooler and the second surface cooler to exchange heat with high-temperature chilled water, cools down and dehumidifies, and then is processed by the heater and humidifier to the air supply state. , and finally sent to the air-conditioned room after being pressurized by the fan. At this time, by adjusting the speed of the first water pump, that is, changing the flow rate of high-temperature chilled water (the flow rate becomes smaller, the outlet water temperature of the first evaporator will decrease correspondingly, and the flow rate is larger, the opposite is true), so that the high-temperature chilled water can bear a small part of the dehumidification load.

两个冷水机组中的两台压缩机采用一定一变的形式。第一冷水机组中使用变容量压缩机用于制备高温冷冻水,第二冷水机组中使用定容量压缩机用于制备低温冷冻水。当空调系统处在部分负荷运行时,变容量压缩机进行能量调节,适应负荷需要。当总负荷较小、潜热负荷不大的情况时,第二冷水机组停机,制冷负荷完全由变容量压缩机制备高温冷冻水来承担。The two compressors in the two chillers adopt a constant and variable form. The variable-capacity compressor is used in the first water chiller to prepare high-temperature chilled water, and the fixed-capacity compressor is used in the second chiller to prepare low-temperature chilled water. When the air conditioning system is in partial load operation, the variable capacity compressor performs energy adjustment to meet the load needs. When the total load is small and the latent heat load is not large, the second chiller is shut down, and the cooling load is completely borne by the high-temperature chilled water prepared by the variable-capacity compressor.

有益效果:本发明的有益效果是,在满足空调除湿负荷要求的同时,将空调负荷的显热负荷和湿负荷分段处理,实现提高冷水机组的蒸发温度,进而提高整个空调系统的能效比,提高能源利用率,整个装置结构简单,紧凑。部分负荷时也能充分利用设备资源,节能,具有良好的经济性。Beneficial effect: the beneficial effect of the present invention is that, while meeting the requirements of the dehumidification load of the air conditioner, the sensible heat load and the humidity load of the air conditioner load are processed in sections, so as to realize the improvement of the evaporation temperature of the chiller unit, thereby improving the energy efficiency ratio of the entire air conditioning system, The energy utilization rate is improved, and the structure of the whole device is simple and compact. Partial load can also make full use of equipment resources, save energy, and have good economy.

附图说明 Description of drawings

图1是本发明热湿分段处理的空调机组装置示意图。Fig. 1 is a schematic diagram of an air conditioning unit device for heat and humidity staged treatment according to the present invention.

图中有:新风口1;回风口2;第一表冷器3;第二表冷器4;加热器5;加湿器6;风机7;送风口8;第一水泵9;第一蒸发器10;第一压缩机11;冷凝器12;冷凝器第一输入端12a;冷凝器第一输出端12b;冷凝器第二输入端12c;冷凝器第二输出端12d;第一储液罐13;第一过滤器14;第一电子膨胀阀15;第二储液罐16;第二过滤器17;第二电子膨胀阀18;第二蒸发器19;第二压缩机20;第二水泵21;第一电磁阀22;第二电磁阀23;第三电磁阀24;第四电磁阀25;第五电磁阀26;冷却水进出管27。In the figure: fresh air outlet 1; return air outlet 2; first surface cooler 3; second surface cooler 4; heater 5; humidifier 6; fan 7; air supply port 8; first water pump 9; first evaporator 10; the first compressor 11; the condenser 12; the first input end 12a of the condenser; the first output end 12b of the condenser; the second input end 12c of the condenser; the second output end 12d of the condenser; the first liquid storage tank 13 The first filter 14; The first electronic expansion valve 15; The second liquid storage tank 16; The second filter 17; The second electronic expansion valve 18; The second evaporator 19; The second compressor 20; The second water pump 21 ; The first solenoid valve 22; the second solenoid valve 23; the third solenoid valve 24; the fourth solenoid valve 25; the fifth solenoid valve 26;

具体实施方式 Detailed ways

结合附图1进一步说明本发明的具体实施方式:基于热湿分段处理的空调机组装置包括空气处理部分(I)和冷水机组部分(II),其中空气处理部分由第一表冷器3、第二表冷器4、加热器5、加湿器6和风机7组成,并通过箱体依次连接而成。冷水机组部分包括第一冷水机组和第二冷水机组,具体连接方式为第一冷水机组压缩机11的输出端接冷凝器第一输入端12a,冷凝器第一输出端12b接第一储液罐13输入端,第一储液罐13输出端通过第一过滤器14接第一电子膨胀阀15输入端,第一电子膨胀阀15输出端接第一蒸发器10输入端,第一蒸发器10输出端接第一压缩机11输入端。第一蒸发器10的冷冻水输出端通过第三电磁阀24接第一表冷器3的冷冻水输入端,第一表冷器3的冷冻水输出端通过第一电磁阀22接第一水泵9的输入端,第一水泵9的输出端接第一蒸发器10的冷冻水输入端。第二冷水机组的压缩机20输出端接冷凝器第二输入端12c,冷凝器第二输出端12d接第二储液罐16输入端,第二储液罐16输出端通过第二过滤器17接第二电子膨胀阀18输入端,第二电子膨胀阀18输出端接第二蒸发器19输入端,第二蒸发器19输出端接第二压缩机20输入端。第二蒸发器19的冷冻水输出端接第二表冷器4的冷冻水输入端,同时通过第五电磁阀26与第一蒸发器10的冷冻水输出端相连,第二表冷器4的冷冻水输出端通过第二电磁阀23接第二水泵21的输入端,同时通过第四电磁阀25与第一表冷器3的冷冻水输入端相连,第二水泵21的输出端接第二蒸发器19的冷冻水输入端。Further illustrate the specific embodiment of the present invention in conjunction with accompanying drawing 1: the air-conditioning unit device based on heat and humidity subsection processing comprises air treatment part (I) and water chiller part (II), wherein air treatment part is made up of the first surface cooler 3, The second surface cooler 4, the heater 5, the humidifier 6 and the blower fan 7 are composed, and are sequentially connected through the casing. The chiller part includes a first chiller and a second chiller, and the specific connection mode is that the output end of the compressor 11 of the first chiller is connected to the first input end 12a of the condenser, and the first output end 12b of the condenser is connected to the first liquid storage tank 13 input end, the output end of the first liquid storage tank 13 is connected to the input end of the first electronic expansion valve 15 through the first filter 14, the output end of the first electronic expansion valve 15 is connected to the input end of the first evaporator 10, and the first evaporator 10 The output end is connected to the input end of the first compressor 11 . The chilled water output end of the first evaporator 10 is connected to the chilled water input end of the first surface cooler 3 through the third solenoid valve 24, and the chilled water output end of the first surface cooler 3 is connected to the first water pump through the first solenoid valve 22 9, the output of the first water pump 9 is connected to the chilled water input of the first evaporator 10. The output end of the compressor 20 of the second chiller is connected to the second input end 12c of the condenser, the second output end 12d of the condenser is connected to the input end of the second liquid storage tank 16, and the output end of the second liquid storage tank 16 passes through the second filter 17 It is connected to the input end of the second electronic expansion valve 18 , the output end of the second electronic expansion valve 18 is connected to the input end of the second evaporator 19 , and the output end of the second evaporator 19 is connected to the input end of the second compressor 20 . The chilled water output end of the second evaporator 19 is connected to the chilled water input end of the second surface cooler 4, and is connected with the chilled water output end of the first evaporator 10 through the fifth electromagnetic valve 26 simultaneously, and the second surface cooler 4 The chilled water output end is connected to the input end of the second water pump 21 through the second electromagnetic valve 23, and is connected to the chilled water input end of the first surface cooler 3 through the fourth electromagnetic valve 25 at the same time, and the output end of the second water pump 21 is connected to the second water pump 21. Chilled water input end of evaporator 19.

空气热湿分段处理过程为:新风、室内回风分别由新风口、回风口进入空调箱并混合,经第一表冷器与高温冷冻水换热,经等湿降温后,除去大部分显热负荷,进入第二表冷器,在第二表冷器中空气与低温冷冻水换热,进一步降温并产生凝结水,除去湿负荷,空气然后依次经过加热器、加湿器、风机后最终从送风口送入室内。The heat and humidity treatment process of air is as follows: the fresh air and the indoor return air enter the air conditioning box from the fresh air outlet and the return air outlet respectively and mix them. The heat load enters the second surface cooler, where the air exchanges heat with low-temperature chilled water, further cools down and generates condensed water, and removes the humidity load. The air then passes through the heater, humidifier, and fan in sequence and finally from The air supply port is sent into the room.

冷水机组的工作过程为:制冷剂在第一压缩机中被压缩排出后进入冷凝器进行冷凝,冷凝成液体后依次经过第一储液罐、第一过滤器后被第一电子膨胀阀节流降压,进入第一蒸发器蒸发,制取高温冷冻水,制冷剂完全蒸发后再次被第一压缩机吸入压缩,从而形成循环,完成制取高温冷冻水,高温冷冻水在第一蒸发器中与制冷剂换热,放出热量,温度降低后通过第三电磁阀进入第一表冷器(此时第四电磁阀、第五电磁阀关闭),冷冻水在其中与空气换热,温度降低后通过第一电磁阀、第一水泵再次进入第一蒸发器。制冷剂在第二压缩机中被压缩排出后进入冷凝器冷凝,冷凝成液体后依次经过第二储液罐、第二过滤器后,再被第二电子膨胀阀节流降压变成气液两相进入第二蒸发器,制冷剂在其中蒸发制取低温冷冻水,制冷剂完全蒸发后再次进入第二压缩机压缩,从而形成循环,低温冷冻水在第二蒸发器中与制冷剂换热,放出热量,温度降低后进入第二表冷器(此时第四电磁阀、第五电磁阀关闭),冷冻水在其中与空气换热,温度降低后通过第二电磁阀、第二水泵再次进入第二蒸发器。The working process of the chiller is: the refrigerant is compressed and discharged in the first compressor and enters the condenser for condensation. After being condensed into a liquid, it passes through the first liquid storage tank and the first filter in turn, and then is throttled by the first electronic expansion valve. Reduce the pressure, enter the first evaporator to evaporate, and produce high-temperature frozen water. After the refrigerant is completely evaporated, it is sucked and compressed by the first compressor again, thus forming a cycle to complete the production of high-temperature frozen water. The high-temperature frozen water is in the first evaporator Exchange heat with the refrigerant to release heat. After the temperature drops, it enters the first surface cooler through the third solenoid valve (at this time, the fourth solenoid valve and the fifth solenoid valve are closed), and the chilled water exchanges heat with the air in it. After the temperature drops Enter the first evaporator again through the first electromagnetic valve and the first water pump. The refrigerant is compressed and discharged in the second compressor and enters the condenser to condense. After being condensed into a liquid, it passes through the second liquid storage tank and the second filter in turn, and then is throttled and depressurized by the second electronic expansion valve to become gas-liquid. The two phases enter the second evaporator, where the refrigerant evaporates to produce low-temperature chilled water. After the refrigerant is completely evaporated, it enters the second compressor again for compression, thereby forming a cycle. The low-temperature chilled water exchanges heat with the refrigerant in the second evaporator , release heat, enter the second surface cooler after the temperature drops (the fourth solenoid valve and the fifth solenoid valve are closed at this time), the chilled water exchanges heat with the air in it, and passes through the second solenoid valve and the second water pump again after the temperature drops. into the second evaporator.

当空调在部分负荷、低湿负荷工况下时,空调机组切换到低负荷工况运行,此时第一电磁阀、第四电磁阀、第五电磁阀开启,第二电磁阀、第三电磁阀关闭,第一表冷器、第二表冷器串联接入高温冷冻水。第二压缩机、第二水泵停止运行。第一冷水机组中制冷剂流动回路不变,冷冻水部分高温冷冻水从第一蒸发器出来后经过第五电磁阀(此时第三电磁阀关闭)进入第二表冷器,从第二表冷器出来后,冷冻水通过第四电磁阀进入第一表冷器,冷冻水从第一表冷器出来经过第一电磁阀、第一水泵后再次进入第一蒸发器完成冷冻水循环。此工况下通过调节第一水泵的转速(即调节水泵的流量)和对第一压缩机进行变容量控制可实现机组制冷量和空调总负荷之间的匹配。When the air conditioner is under the condition of partial load and low humidity load, the air conditioner unit switches to the low load condition. At this time, the first solenoid valve, the fourth solenoid valve, and the fifth solenoid valve are opened, and the second solenoid valve and the third solenoid valve are turned on. Closed, the first surface cooler and the second surface cooler are connected to high-temperature chilled water in series. The second compressor and the second water pump stop running. The refrigerant flow circuit in the first chiller unit remains unchanged, and the high-temperature chilled water part of the chilled water comes out of the first evaporator and enters the second surface cooler through the fifth solenoid valve (the third solenoid valve is closed at this time). After the cooler comes out, the chilled water enters the first surface cooler through the fourth solenoid valve, and the chilled water comes out of the first surface cooler, passes through the first solenoid valve and the first water pump, and then enters the first evaporator again to complete the chilled water cycle. Under this working condition, the matching between the cooling capacity of the unit and the total load of the air conditioner can be realized by adjusting the rotational speed of the first water pump (that is, adjusting the flow rate of the water pump) and performing variable capacity control on the first compressor.

从以上过程可以看出,采用热湿分段处理的空调机组装置,在一般工况下,空气显热负荷主要通过高温冷冻水处理,该部分冷量由第一冷水机组产生。第一冷水机组制取高温冷冻水,蒸发温度较高,能效比可得到显著提升。在低负荷工况下,全部热湿负荷均通过高温冷冻水处理,冷量全部由第一冷水机组产生。由于第一制冷循环蒸发温度较高,能效比高,机组耗能减少,机组整体性能显著提升。It can be seen from the above process that, under normal working conditions, the sensible heat load of the air is mainly treated by high-temperature chilled water, and this part of the cooling capacity is generated by the first chiller. The first chiller produces high-temperature chilled water with a high evaporation temperature, and the energy efficiency ratio can be significantly improved. Under low-load conditions, all heat and humidity loads are processed by high-temperature chilled water, and all cooling capacity is generated by the first chiller. Due to the high evaporation temperature and high energy efficiency ratio of the first refrigeration cycle, the energy consumption of the unit is reduced, and the overall performance of the unit is significantly improved.

Claims (6)

1.一种热湿分段处理的空调机组装置,其特征在于该装置包括空气处理部分(I)和冷水机组部分(II);空气处理部分(I)包括第一表冷器(3)、第二表冷器(4)、加热器(5)、加湿器(6)和风机(7),并通过箱体依次连接而成;冷水机组部分(II)包括第一冷水机组和第二冷水机组;第一冷水机组中,第一压缩机(11)的输出端接冷凝器(12)的冷凝器第一输入端(12a),冷凝器第一输出端(12b)接第一储液罐(13)的输入端,第一储液罐(13)输出端通过第一过滤器(14)接第一电子膨胀阀(15)的输入端,第一电子膨胀阀(15)输出端接第一蒸发器(10)的制冷剂输入端,第一蒸发器(10)的制冷剂输出端接第一压缩机(11)的输入端;第一蒸发器(10)的冷冻水输出端通过第三电磁阀(24)接第一表冷器(3)的冷冻水输入端,第一表冷器(3)的冷冻水输出端通过第一电磁阀(22)接第一水泵(9)的输入端,第一水泵(9)输出端接第一蒸发器(10)的冷冻水输入端;第二冷水机组中,第二压缩机(20)输出端接冷凝器第二输入端(12c),冷凝器第二输出端(12d)接第二储液罐(16)输入端,第二储液罐(16)输出端通过第二过滤器(17)接第二电子膨胀阀(18)输入端,第二电子膨胀阀(18)输出端接第二蒸发器(19)制冷剂输入端,第二蒸发器(19)制冷剂输出端接第二压缩机(20)输入端;第二蒸发器(19)的冷冻水输出端接第二表冷器(4)的冷冻水输入端,同时通过第五电磁阀(26)与第一蒸发器(10)的冷冻水输出端相连,第二表冷器(4)的冷冻水输出端通过第二电磁阀(23)接第二水泵(21)的输入端,同时通过第四电磁阀(25)与第一表冷器(3)的冷冻水输入端相连,第二水泵(21)的输出端接第二蒸发器(19)的冷冻水输入端。1. A kind of air-conditioning unit device of heat and humidity section treatment, it is characterized in that this device comprises air treatment part (I) and water chiller part (II); Air treatment part (I) comprises the first surface cooler (3), The second surface cooler (4), heater (5), humidifier (6) and fan (7) are connected in sequence through the box; the chiller part (II) includes the first chiller and the second chiller Unit; in the first water chiller, the output end of the first compressor (11) is connected to the first input end (12a) of the condenser (12), and the first output end (12b) of the condenser is connected to the first liquid storage tank The input end of (13), the output end of the first liquid storage tank (13) is connected to the input end of the first electronic expansion valve (15) through the first filter (14), and the output end of the first electronic expansion valve (15) is connected to the first The refrigerant input end of an evaporator (10), the refrigerant output end of the first evaporator (10) is connected to the input end of the first compressor (11); the chilled water output end of the first evaporator (10) passes through the first Three electromagnetic valves (24) are connected to the chilled water input end of the first surface cooler (3), and the chilled water output end of the first surface cooler (3) is connected to the first water pump (9) through the first electromagnetic valve (22). At the input end, the output end of the first water pump (9) is connected to the chilled water input end of the first evaporator (10); in the second chiller, the output end of the second compressor (20) is connected to the second input end (12c) of the condenser , the second output end of the condenser (12d) is connected to the input end of the second liquid storage tank (16), and the output end of the second liquid storage tank (16) is connected to the input of the second electronic expansion valve (18) through the second filter (17) end, the output end of the second electronic expansion valve (18) is connected to the refrigerant input end of the second evaporator (19), and the refrigerant output end of the second evaporator (19) is connected to the input end of the second compressor (20); the second evaporator The chilled water output end of the device (19) is connected to the chilled water input end of the second surface cooler (4), and is connected to the chilled water output end of the first evaporator (10) through the fifth solenoid valve (26). The chilled water output end of the surface cooler (4) is connected to the input end of the second water pump (21) through the second solenoid valve (23), and at the same time passes through the fourth solenoid valve (25) and the freezing water of the first surface cooler (3). The water input ends are connected, and the output end of the second water pump (21) is connected to the chilled water input end of the second evaporator (19). 2.根据权利要求1所述的热湿分段处理空调机组装置,其特征在于空调处理箱中有两个表冷器:第一表冷器(3)和第二表冷器(4);第一表冷器(3)中通高温冷冻水,第二表冷器(4)通低温冷冻水。2. The heat-humidity segmental treatment air-conditioning unit device according to claim 1, characterized in that there are two surface coolers in the air-conditioning treatment box: the first surface cooler (3) and the second surface cooler (4); High-temperature chilled water is passed through the first surface cooler (3), and low-temperature chilled water is passed through the second surface cooler (4). 3.根据权利要求1所述的热湿分段处理空调机组装置,其特征在于第一表冷器(3)和第二表冷器(4)的进出口间有由第三电磁阀(24)、第四电磁阀(25)、第五电磁阀(26)组成的阀门组,用于在小负荷时将两表冷器串联通入高温冷冻水。3. The heat-humidity segmental treatment air-conditioning unit device according to claim 1, characterized in that there is a third solenoid valve (24) between the inlet and outlet of the first surface cooler (3) and the second surface cooler (4). ), the fourth solenoid valve (25), and the fifth solenoid valve (26) are used to feed high-temperature chilled water into the two surface coolers in series when the load is small. 4.根据权利要求1所述的热湿分段处理空调机组装置,其特征是采用两台压缩机分别制备高温冷冻水和低温冷冻水,其中用于制备高温冷冻水的第一压缩机(11)为可变容量压缩机,用于制备低温冷冻水的第二压缩机(20)为定容量压缩机,第一水泵(9)为变流量水泵。4. The heat-humidity segmental treatment air-conditioning unit device according to claim 1, characterized in that two compressors are used to prepare high-temperature chilled water and low-temperature chilled water respectively, wherein the first compressor (11 for preparing high-temperature chilled water) ) is a variable-capacity compressor, the second compressor (20) used to prepare low-temperature chilled water is a constant-capacity compressor, and the first water pump (9) is a variable-flow water pump. 5.根据权利要求1所述的热湿分段处理空调机组装置,其特征是所述第一冷水机组与第二冷水机组共用一个冷凝器(12)。5. The heat-humidity segmental treatment air-conditioning unit device according to claim 1, characterized in that the first chiller unit and the second chiller unit share a condenser (12). 6.一种如权利要求1所述的热湿分段处理空调机组装置的空气处理方法,其特征是该方法分两部分,其中:6. A heat-humidity staged air treatment method for an air-conditioning unit device as claimed in claim 1, characterized in that the method is divided into two parts, wherein: 热湿分段处理的空气处理方法是:室内回风与新风混合后首先经过第一表冷器(3)与高温冷冻水换热,经等湿降温到露点温度,除去大部分显热负荷后进入第二表冷器(4);在第二表冷器(4)中,空气与低温冷冻水进一步换热,降温并产生凝结水,除去湿负荷;降温除湿后的空气经加热器(5)、加湿器(6)处理到送风状态点,最终经风机(7)加压后送入空调房间;The air treatment method of hot and humid section treatment is: after the indoor return air is mixed with the fresh air, it first passes through the first surface cooler (3) to exchange heat with high-temperature chilled water, and then cools down to the dew point temperature through isohumidity, after removing most of the sensible heat load Enter the second surface cooler (4); in the second surface cooler (4), the air further exchanges heat with low-temperature chilled water, cools down and produces condensed water, and removes the humidity load; the air after cooling and dehumidification passes through the heater (5 ), the humidifier (6) is processed to the air supply state point, and finally sent to the air-conditioned room after being pressurized by the fan (7); 空调机组装置所采取的方法是:第一冷水机组中制冷剂在被第一压缩机(11)压缩排出后进入冷凝器(12)冷凝,然后经过第一储液罐(13)和第一过滤器(14)被第一电子膨胀阀(15)节流降压后,进入第一蒸发器(10)与冷冻水进行换热,制冷剂吸热蒸发,同时冷冻水温度降低,制取高温冷冻水,制冷剂完全蒸发后再次被第一压缩机(11)吸入压缩,从而实现循环;高温冷冻水在第一水泵(9)的驱动下经第三电磁阀(24)流入第一表冷器(3),与空气进行换热,吸收空气中的显热,然后经第一电磁阀(22)、第一水泵(9)回到第一蒸发器(10);第二冷水机组中制冷剂在被第二压缩机(20)压缩排出后进入冷凝器冷凝,然后经过第二储液罐(16)和第二过滤器(17),被第二电子膨胀阀(18)节流降压后进入第二蒸发器(19),制冷剂与冷冻水换热,吸热制取低温冷冻水,制冷剂完全蒸发后被第二压缩机(20)再次吸入,从而完成循环;低温冷冻水受到第二水泵(21)的驱动流入第二表冷器(4),吸收空气中的潜热,自身温度升高,然后经第二电磁阀(23)、第二水泵(21)回到第二蒸发器(19)。The method adopted by the air conditioner unit is: the refrigerant in the first water chiller is compressed and discharged by the first compressor (11) and enters the condenser (12) to condense, and then passes through the first liquid storage tank (13) and the first filter After the device (14) is throttled and depressurized by the first electronic expansion valve (15), it enters the first evaporator (10) to exchange heat with the chilled water. After the refrigerant is completely evaporated, the refrigerant is inhaled and compressed by the first compressor (11) again to realize circulation; the high-temperature chilled water flows into the first surface cooler through the third solenoid valve (24) driven by the first water pump (9) (3), heat exchange with the air, absorb sensible heat in the air, and then return to the first evaporator (10) through the first electromagnetic valve (22) and the first water pump (9); the refrigerant in the second chiller After being compressed and discharged by the second compressor (20), it enters the condenser to condense, then passes through the second liquid storage tank (16) and the second filter (17), and is throttled and depressurized by the second electronic expansion valve (18). Entering the second evaporator (19), the refrigerant exchanges heat with the chilled water, and absorbs heat to produce low-temperature chilled water. After the refrigerant is completely evaporated, it is sucked again by the second compressor (20), thereby completing the cycle; the low-temperature chilled water is subjected to the first The drive of the second water pump (21) flows into the second surface cooler (4), absorbs the latent heat in the air, and its temperature rises, and then returns to the second evaporator through the second solenoid valve (23) and the second water pump (21). (19).
CNB2008100238832A 2008-04-18 2008-04-18 Air Conditioning Unit Device and Air Treatment Method for Heat and Humidity Sectional Treatment Expired - Fee Related CN100552312C (en)

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CN101782263A (en) * 2010-03-10 2010-07-21 广东吉荣空调有限公司 Multi-operating mode energy-saving controlled combined type thermostatic and humidistatic air conditioning unit with thermometal compound box body structure
CN101968243A (en) * 2010-09-21 2011-02-09 东南大学 Air source heat pump device capable of simultaneously preparing double-temperature water and driving method thereof
CN102589058A (en) * 2011-01-10 2012-07-18 广东迪奥技术工程有限公司 Efficient energy-saving air-conditioning system with independently controlled temperature and humidity and adjusting method thereof
CN102589058B (en) * 2011-01-10 2014-01-01 广东迪奥技术有限公司 Efficient energy-saving air conditioning system with independent temperature and humidity control function and adjusting method thereof
CN102269450A (en) * 2011-08-23 2011-12-07 上海京瓷电子有限公司 Summer energy-saving air conditioner
CN102418966A (en) * 2011-12-19 2012-04-18 东南大学 Air treatment device and air treatment method
CN102878650A (en) * 2012-09-28 2013-01-16 东南大学 Household air conditioner device capable of adjusting temperature and humidity respectively
CN103591723A (en) * 2013-12-17 2014-02-19 南通明德重工有限公司 Air-conditioning water chilling unit
CN103759360B (en) * 2014-01-20 2016-10-05 新疆绿色使者干空气能源有限公司 Multi-state is combined indirect air processing means and air-conditioning method thereof
CN103759360A (en) * 2014-01-20 2014-04-30 新疆绿色使者干空气能源有限公司 Multi-working-condition composite indirect air processing device and air conditioning method thereof
CN103884058A (en) * 2014-03-24 2014-06-25 雅士空调(广州)有限公司 Direct evaporation type air cooling type fresh air unit
CN103940007A (en) * 2014-03-24 2014-07-23 广东石油化工学院 Direct evaporation type water-cooling fresh air unit
CN103940061A (en) * 2014-05-07 2014-07-23 深圳海悟科技有限公司 Energy-saving air conditioning system
CN104390320A (en) * 2014-11-18 2015-03-04 苏州市海魄洁净环境工程有限公司 Clean room temperature and humidity automatic control device
CN104406242A (en) * 2014-11-18 2015-03-11 苏州市海魄洁净环境工程有限公司 Efficient dehumidification cleaning room system
CN104406242B (en) * 2014-11-18 2017-02-22 苏州市海魄洁净环境工程有限公司 Efficient dehumidification cleaning room system
CN104764126A (en) * 2015-03-30 2015-07-08 广东申菱空调设备有限公司 Double-cold-source variable frequency precise air conditioning unit
CN104930595A (en) * 2015-07-13 2015-09-23 尹本望 Indoor air adjusting system
CN104930595B (en) * 2015-07-13 2018-02-27 尹本望 A kind of indoor air conditioning system
WO2017193578A1 (en) * 2016-05-12 2017-11-16 上海交通大学 Temperature and humidity weak-relevance control unit type air conditioning system and use method
CN106152285A (en) * 2016-08-16 2016-11-23 珠海格力电器股份有限公司 Air conditioning system and control method thereof
CN106152285B (en) * 2016-08-16 2023-07-04 珠海格力电器股份有限公司 Air conditioning system and control method thereof
CN106546028A (en) * 2016-09-29 2017-03-29 同济大学 A kind of frost-free type cold-producing medium Two-way Cycle fresh air handining unit
CN106546028B (en) * 2016-09-29 2019-12-27 同济大学 Frostless type refrigerant dual cycle fresh air conditioning unit
CN106895530B (en) * 2017-04-18 2019-08-20 东南大学 A water cold storage temperature and humidity independent control district cooling system
CN106895530A (en) * 2017-04-18 2017-06-27 东南大学 A kind of water cold storage independent temperature-humidity control regional cold supply system
CN108592269A (en) * 2018-05-22 2018-09-28 福建工程学院 A kind of natural cooling and heating source comprehensive utilization air-conditioning system and control method
CN110671772A (en) * 2019-11-06 2020-01-10 昆山璟赫机电工程有限公司 Constant temperature and humidity water system
CN111735124A (en) * 2020-07-29 2020-10-02 有无实业(重庆)有限公司 Novel heat exchange dehumidification structure and method
CN113847666A (en) * 2021-12-01 2021-12-28 深圳中集天达吉荣航空制冷有限公司 Air conditioning system
DE102022117134A1 (en) * 2022-07-08 2024-01-11 Heck Kältetechnik GmbH Air preparation system for ventilating a cabin and cabin system
CN115265163A (en) * 2022-07-28 2022-11-01 哈尔滨工业大学 A heat pump drying system with both pre-dehumidification and thermal energy circulation functions
CN115265163B (en) * 2022-07-28 2023-11-07 哈尔滨工业大学 A heat pump drying system with both pre-dehumidification and thermal energy circulation functions
CN115854448A (en) * 2022-12-28 2023-03-28 北京建筑大学 Double-evaporation temperature and humidity independent control air conditioner
CN115854448B (en) * 2022-12-28 2024-09-20 北京建筑大学 Double-evaporation temperature and humidity independent control air conditioner

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