CN104654479A - Heat pump-driven multistage solution dehumidification fresh air processing set - Google Patents
Heat pump-driven multistage solution dehumidification fresh air processing set Download PDFInfo
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- 238000007791 dehumidification Methods 0.000 title claims abstract description 36
- 239000000243 solution Substances 0.000 description 207
- 238000000034 method Methods 0.000 description 27
- 230000008569 process Effects 0.000 description 19
- 238000001816 cooling Methods 0.000 description 12
- 238000011069 regeneration method Methods 0.000 description 11
- 230000008929 regeneration Effects 0.000 description 10
- 239000003507 refrigerant Substances 0.000 description 8
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/02—System or Device comprising a heat pump as a subsystem, e.g. combined with humidification/dehumidification, heating, natural energy or with hybrid system
- F24F2203/021—Compression cycle
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Abstract
Description
技术领域technical field
本发明涉及一种新风处理机组，特别是关于一种热泵驱动的多级溶液除湿新风处理机组。The invention relates to a fresh air treatment unit, in particular to a multi-stage solution dehumidification fresh air treatment unit driven by a heat pump.
背景技术Background technique
建筑空调系统的主要任务是满足室内适宜的温湿度参数需求，而空气除湿是满足室内适宜的湿度水平、改善室内环境舒适性的重要环节。现有的除湿方式多以冷凝除湿方式为主，即采用低温冷水、制冷剂等冷媒来将空气降温到露点温度以下，使得空气中水分凝结来完成除湿过程。由于需要的冷源温度较低(低于空气的露点温度)，造成制冷机的蒸发温度降低，从而严重影响了制冷机的性能系数。此外，传统的冷凝除湿方式存在送风温度偏低、部分情况下需再热导致能源浪费以及存在冷凝水、影响空气品质等问题，因此寻求新的高效空气湿度处理方式已成为当前暖通空调领域的研究热点。The main task of the building air-conditioning system is to meet the requirements of suitable indoor temperature and humidity parameters, and air dehumidification is an important link to meet the suitable indoor humidity level and improve the comfort of the indoor environment. Most of the existing dehumidification methods are condensation dehumidification methods, that is, low-temperature cold water, refrigerants and other refrigerants are used to cool the air below the dew point temperature, so that the moisture in the air condenses to complete the dehumidification process. Due to the low temperature of the cold source required (lower than the dew point temperature of the air), the evaporation temperature of the refrigerator is reduced, which seriously affects the coefficient of performance of the refrigerator. In addition, the traditional condensing dehumidification method has problems such as low air supply temperature, energy waste caused by reheating in some cases, condensed water, and affecting air quality. Therefore, seeking new efficient air humidity treatment methods has become the current HVAC field. research hotspots.
溶液除湿方式采用具有吸湿性质的盐溶液作为介质，通过溶液与新风进行传热传质来实现对新风的除湿处理过程。作为一种有效的空气湿度处理途径，溶液除湿方式能够高效地满足空气湿度处理需求，并具有不需要再热、可利用多种能源等优势，近年来在我国已得到越来越广泛的应用。已有溶液除湿方式与热泵循环有效结合的空气处理装置，例如ZL03134688.X、ZL200610012259.3公开了使用溶液为媒介的热泵驱动式溶液除湿新风机组处理流程，通过设置热泵循环，利用其中蒸发器的冷量来降低溶液温度、增强溶液的吸湿性能，冷凝器的热量用于吸湿溶液的浓缩再生。The solution dehumidification method uses a salt solution with hygroscopic properties as the medium, and realizes the dehumidification process of the fresh air through heat and mass transfer between the solution and the fresh air. As an effective way of air humidity treatment, the solution dehumidification method can efficiently meet the needs of air humidity treatment, and has the advantages of not requiring reheating and utilizing a variety of energy sources. It has been more and more widely used in my country in recent years. There are existing air treatment devices that effectively combine the solution dehumidification method with the heat pump cycle, such as ZL03134688.X and ZL200610012259.3 disclose the treatment process of the heat pump driven solution dehumidification fresh air unit using the solution as the medium. By setting the heat pump cycle and using the evaporator The cooling capacity is used to reduce the solution temperature and enhance the hygroscopic performance of the solution, and the heat of the condenser is used for the concentrated regeneration of the hygroscopic solution.
对于这类采用热泵循环的溶液除湿处理装置，当溶液除湿过程全部利用蒸发器侧冷量时，由于热泵循环中冷凝器的排热量等于蒸发器冷量与压缩机功耗之和即冷凝器侧热量大于蒸发器侧冷量，冷凝器的排热量大于系统中溶液浓缩再生所需的热量。这种冷热量间的不匹配会影响机组的性能，已有专利从排除冷凝器侧多余热量的角度给出了解决方案。例如在专利ZL03134688.X中，通过设置辅助冷凝器(采用空气冷却)带走多余的冷凝器排热量，但由于辅助冷凝器是对空气加热(含湿量不发生变化)使得空气带走热量的能力有限，冷凝温度仍然比较高。ZL201010175940.6公开了一种利用再生过程排风蒸发冷却来带走冷凝器多余热量的溶液除湿新风机组，从溶液再生的角度出发，冷凝器侧热量是可以得到有效利用的，而辅助冷凝器排出冷凝热量的方案均未能充分利用冷凝器侧热量来对溶液进行再生。For this type of solution dehumidification treatment device that uses a heat pump cycle, when the solution dehumidification process uses the cooling capacity of the evaporator side entirely, since the heat dissipation of the condenser in the heat pump cycle is equal to the sum of the cooling capacity of the evaporator and the power consumption of the compressor, that is, the cooling capacity of the condenser side The heat is greater than the side cooling capacity of the evaporator, and the exhaust heat of the condenser is greater than the heat required for the concentration and regeneration of the solution in the system. This mismatch between cold and heat will affect the performance of the unit. The existing patents provide a solution from the perspective of removing excess heat from the condenser side. For example, in the patent ZL03134688.X, the redundant condenser heat is taken away by setting the auxiliary condenser (using air cooling), but since the auxiliary condenser heats the air (the moisture content does not change), the air takes away the heat The capacity is limited, and the condensation temperature is still relatively high. ZL201010175940.6 discloses a solution dehumidification fresh air unit that uses evaporative cooling of the exhaust air in the regeneration process to take away excess heat from the condenser. From the perspective of solution regeneration, the heat on the side of the condenser can be effectively utilized, and the auxiliary condenser discharge None of the schemes for condensing heat can make full use of the side heat of the condenser to regenerate the solution.
因此，从现有技术背景来看，尚缺少能够利用冷凝器侧全部热量进行溶液再生的热泵驱动型溶液除湿装置。Therefore, from the perspective of the prior art background, there is still a lack of a heat pump-driven solution dehumidification device that can use all the heat on the condenser side to regenerate the solution.
发明内容Contents of the invention
针对上述问题，本发明的目的是提供一种能够使热泵循环的冷凝热量全部得到有效利用的热泵驱动的多级溶液除湿新风处理机组。In view of the above problems, the object of the present invention is to provide a heat pump-driven multi-stage solution dehumidification fresh air treatment unit capable of effectively utilizing all the condensation heat of the heat pump cycle.
为实现上述目的，本发明采用以下技术方案：一种热泵驱动的多级溶液除湿新风处理机组，其特征在于：它包括多级新风处理单元，每一级新风处理单元均包括一溶液除湿器、一溶液再生器、一辅助溶液除湿器、一压缩机、一冷凝器、一膨胀阀和一蒸发器；所述压缩机、冷凝器、膨胀阀和蒸发器依次连接组成溶液换热的循环回路；所述冷凝器的换热端通过一溶液循环泵与所述溶液再生器连接组成溶液循环回路；所述蒸发器的换热端通过一溶液循环泵与所述溶液除湿器连接组成溶液循环回路；所述辅助溶液除湿器与一溶液循环泵连接组成除湿器内溶液循环回路；所述溶液再生器分别与溶液除湿器、辅助溶液除湿器连接组成溶液循环回路；在所述溶液再生器与所述溶液除湿器之间的所述溶液循环回路上设置一板式换热器。In order to achieve the above object, the present invention adopts the following technical solutions: a multi-stage solution dehumidification fresh air treatment unit driven by a heat pump, characterized in that it includes a multi-stage fresh air treatment unit, and each fresh air treatment unit includes a solution dehumidifier, A solution regenerator, an auxiliary solution dehumidifier, a compressor, a condenser, an expansion valve and an evaporator; the compressor, condenser, expansion valve and evaporator are sequentially connected to form a circulation loop for solution heat exchange; The heat exchange end of the condenser is connected to the solution regenerator through a solution circulation pump to form a solution circulation loop; the heat exchange end of the evaporator is connected to the solution dehumidifier through a solution circulation pump to form a solution circulation loop; The auxiliary solution dehumidifier is connected with a solution circulation pump to form a solution circulation loop in the dehumidifier; the solution regenerator is respectively connected with the solution dehumidifier and the auxiliary solution dehumidifier to form a solution circulation loop; between the solution regenerator and the A plate heat exchanger is arranged on the solution circulation loop between the solution dehumidifiers.
多级所述新风处理单元之间采用串联的方式布置。The multi-stage fresh air processing units are arranged in series.
在最后一级所述新风处理单元的所述溶液除湿器的后方设置一表冷器。A surface cooler is arranged behind the solution dehumidifier of the last stage fresh air processing unit.
所述新风处理单元的数量为两个。The number of the fresh air processing units is two.
一种热泵驱动的多级溶液除湿新风处理机组，其特征在于：它包括多级新风处理单元和一辅助溶液除湿器；每一级新风处理单元均包括一溶液除湿器、一溶液再生器、一压缩机、一冷凝器、一膨胀阀和一蒸发器；所述压缩机、冷凝器、膨胀阀和蒸发器依次连接组成溶液换热的循环回路；所述冷凝器的换热端通过一溶液循环泵与所述溶液再生器连接组成溶液循环回路；所述蒸发器的换热端通过一溶液循环泵与所述溶液除湿器连接组成溶液循环回路；所述溶液再生器与溶液除湿器连接组成溶液循环回路，在所述溶液再生器与所述溶液除湿器之间的所述溶液循环回路上设置一板式换热器；所述辅助溶液除湿器位于第一级所述新风处理单元的所述溶液除湿器的前方，所述辅助溶液除湿器与各级所述新风处理单元的所述溶液再生器连接分别组成溶液循环回路。A multi-stage solution dehumidification fresh air treatment unit driven by a heat pump is characterized in that it includes a multi-stage fresh air treatment unit and an auxiliary solution dehumidifier; each fresh air treatment unit includes a solution dehumidifier, a solution regenerator, a A compressor, a condenser, an expansion valve, and an evaporator; the compressor, condenser, expansion valve, and evaporator are sequentially connected to form a solution heat exchange loop; the heat exchange end of the condenser is circulated through a solution The pump is connected to the solution regenerator to form a solution circulation loop; the heat exchange end of the evaporator is connected to the solution dehumidifier through a solution circulation pump to form a solution circulation loop; the solution regenerator is connected to the solution dehumidifier to form a solution A circulation loop, a plate heat exchanger is arranged on the solution circulation loop between the solution regenerator and the solution dehumidifier; the auxiliary solution dehumidifier is located in the solution In front of the dehumidifier, the auxiliary solution dehumidifier is connected to the solution regenerators of the fresh air processing units at each stage to form a solution circulation loop respectively.
本发明由于采取以上技术方案，其具有以下优点：1、本发明每一级新风处理单元中的压缩机、冷凝器、膨胀阀和蒸发器依次连接组成热泵循环回路，其特点是热泵循环的冷凝热量全部用于加热溶液再生器中的循环溶液，对溶液进行再生，同时热泵循环的蒸发器冷量用来冷却部分溶液除湿过程中的循环溶液，并设置有辅助溶液除湿器，显著改善了由于热泵循环冷热量不匹配导致的溶液除湿过程冷量与再生过程热量间的需求不一致的问题，使得热泵循环的冷量和热量能够得到更充分的利用，并有助于提高热泵循环的能效水平。2、本发明一方面利用热泵循环的冷凝器对进入溶液再生器喷淋的溶液进行加热，满足溶液再生热量需求，另一方面利用热泵循环的蒸发器来冷却部分除湿溶液从而增强其除湿能力。3、本发明设置多级新风处理单元，可实现更为匹配的处理过程；并且，每一级均包括热泵循环、溶液除湿-再生循环等，空气与溶液间的热湿处理过程均为叉流流型；在每级新风处理单元中，再生空气流经绝热型溶液再生器并对溶液进行再生，由溶液再生器流出的较高浓度溶液一部分进入利用热泵循环蒸发器对溶液进行降温的绝热型溶液除湿器，一部分进入绝热型的辅助溶液除湿器；新风依次流经辅助溶液除湿器和利用蒸发器对溶液进行降温的溶液除湿器，由溶液除湿器流出的溶液被送至溶液再生器，在溶液除湿器与溶液再生器之间循环的浓溶液与稀溶液间设置板式换热器对溶液热量进行回收，有助于改善处理过程能效。4、本发明在最后一级新风处理单元的溶液除湿器的后方设置一表冷器，对满足湿度处理需求后的空气进一步降温，使送风能够同时满足湿度与温度的多重需求。Because the present invention adopts the above technical scheme, it has the following advantages: 1. The compressor, condenser, expansion valve and evaporator in each stage of the fresh air processing unit of the present invention are connected in sequence to form a heat pump circulation circuit, which is characterized in that the heat pump circulation is condensed All the heat is used to heat the circulating solution in the solution regenerator to regenerate the solution. At the same time, the cooling capacity of the evaporator of the heat pump cycle is used to cool part of the circulating solution in the solution dehumidification process, and an auxiliary solution dehumidifier is installed, which significantly improves the due to The inconsistency between the cooling capacity of the solution dehumidification process and the heat of the regeneration process caused by the mismatch of cold and heat in the heat pump cycle makes the cooling and heat of the heat pump cycle more fully utilized and helps to improve the energy efficiency of the heat pump cycle . 2. On the one hand, the present invention uses the condenser of the heat pump cycle to heat the solution sprayed into the solution regenerator to meet the heat demand of solution regeneration, and on the other hand, uses the evaporator of the heat pump cycle to cool part of the dehumidification solution to enhance its dehumidification capacity. 3. The present invention is equipped with multi-stage fresh air processing units, which can realize a more matching processing process; and each stage includes a heat pump cycle, a solution dehumidification-regeneration cycle, etc., and the heat and humidity processing process between the air and the solution is a cross flow Flow pattern; in each level of fresh air processing unit, the regenerated air flows through the adiabatic solution regenerator to regenerate the solution, and a part of the higher concentration solution flowing out of the solution regenerator enters the adiabatic type that uses the heat pump circulating evaporator to cool the solution The solution dehumidifier, part of which enters the adiabatic auxiliary solution dehumidifier; the fresh air flows through the auxiliary solution dehumidifier and the solution dehumidifier which uses the evaporator to cool the solution in turn, and the solution flowing out of the solution dehumidifier is sent to the solution regenerator. A plate heat exchanger is set between the concentrated solution and the dilute solution circulating between the solution dehumidifier and the solution regenerator to recover the heat of the solution, which helps to improve the energy efficiency of the treatment process. 4. In the present invention, a surface cooler is installed behind the solution dehumidifier of the last-stage fresh air processing unit to further cool down the air after meeting the humidity treatment requirements, so that the air supply can meet the multiple requirements of humidity and temperature at the same time.
附图说明Description of drawings
图1是本发明实施例一的结构示意图；Fig. 1 is a schematic structural view of Embodiment 1 of the present invention;
图2是本发明实施例二的结构示意图。Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.
具体实施方式Detailed ways
下面结合附图和实施例对本发明进行详细的描述。The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
实施例一：Embodiment one:
如图1所示，本实施例的新风处理机组包括多级新风处理单元I，每一级新风处理单元I均包括一溶液除湿器A、一溶液再生器B、一辅助溶液除湿器C、一压缩机1、一冷凝器2、一膨胀阀3和一蒸发器4。其中，压缩机1、冷凝器2、膨胀阀3和蒸发器4依次连接组成溶液换热的循环回路(又称热泵循环回路)；冷凝器2的换热端通过一溶液循环泵5与溶液再生器B连接组成溶液循环回路；蒸发器4的换热端通过一溶液循环泵5与溶液除湿器A连接组成溶液循环回路；辅助溶液除湿器C与一溶液循环泵5连接组成除湿器内溶液循环回路；溶液再生器B分别与溶液除湿器A、辅助溶液除湿器C连接组成溶液循环回路，且在溶液再生器B与溶液除湿器A之间的溶液循环回路上设置一板式换热器6。As shown in Figure 1, the fresh air processing unit of the present embodiment includes a multi-stage fresh air processing unit 1, and each stage of fresh air processing unit 1 includes a solution dehumidifier A, a solution regenerator B, an auxiliary solution dehumidifier C, a A compressor 1 , a condenser 2 , an expansion valve 3 and an evaporator 4 . Among them, the compressor 1, the condenser 2, the expansion valve 3 and the evaporator 4 are sequentially connected to form a solution heat exchange circulation circuit (also known as a heat pump circulation circuit); the heat exchange end of the condenser 2 is regenerated with the solution through a solution circulation pump 5 The solution circulation loop is formed by connecting the device B; the heat exchange end of the evaporator 4 is connected with the solution dehumidifier A through a solution circulation pump 5 to form a solution circulation loop; the auxiliary solution dehumidifier C is connected with a solution circulation pump 5 to form a solution circulation in the dehumidifier Loop: solution regenerator B is connected with solution dehumidifier A and auxiliary solution dehumidifier C respectively to form a solution circulation loop, and a plate heat exchanger 6 is set on the solution circulation loop between solution regenerator B and solution dehumidifier A.
上述实施例中，多级新风处理单元I之间采用串联的方式布置，即新风(待处理空气)依次通过每一级新风处理单元I后成为送风。In the foregoing embodiment, the multi-stage fresh air processing units 1 are arranged in series, that is, the fresh air (air to be treated) passes through each stage of fresh air processing units 1 in turn to become air supply.
上述实施例中，可以在最后一级新风处理单元I的溶液除湿器A的后方设置一表冷器7，用于对经过多级溶液除湿器A后的空气进行降温。In the above-mentioned embodiment, a surface cooler 7 can be arranged behind the solution dehumidifier A of the last fresh air processing unit 1 for cooling the air after passing through the multi-stage solution dehumidifier A.
上述实施例中，新风处理机组所包括的新风处理单元I可以是两级。In the above-mentioned embodiment, the fresh air processing units 1 included in the fresh air processing unit can be of two stages.
上述实施例中，溶液再生器B、溶液除湿器A和辅助溶液除湿器C均为绝热型。In the above embodiments, the solution regenerator B, the solution dehumidifier A and the auxiliary solution dehumidifier C are all adiabatic.
下面以包括两级新风处理单元I的新风处理机组为例说明本实施例的工作原理：The working principle of this embodiment will be described below by taking the fresh air processing unit including the two-stage fresh air processing unit 1 as an example:
如图1所示，新风(待处理空气)首先进入第一级新风处理单元I中的辅助溶液除湿器C，与从辅助溶液除湿器C顶部喷淋而下的溶液进行叉流热质交换过程；之后新风继续进入溶液除湿器A，并与从其顶部喷淋而下的溶液进行叉流热质交换过程；新风由溶液除湿器A流出后继续依次进入第二级处理单元I的辅助溶液除湿器C、溶液除湿器A，新风在与从溶液除湿器A顶部喷淋而下的溶液进行热质交换后流出第二级新风处理单元I，满足新风的湿度处理需求。之后，可以根据被处理后的新风温度情况对温度进行调节，即：当新风温度较高时，利用表冷器7对新风进行降温，其中表冷器7中的冷源为高温冷水等冷媒。经过表冷器7降温后的新风成为送风，即可送至需求的场所。As shown in Figure 1, fresh air (air to be treated) first enters the auxiliary solution dehumidifier C in the first-stage fresh air processing unit I, and performs a cross-flow heat and mass exchange process with the solution sprayed down from the top of the auxiliary solution dehumidifier C After that, the fresh air continues to enter the solution dehumidifier A, and performs a cross-flow heat and mass exchange process with the solution sprayed down from its top; after the fresh air flows out of the solution dehumidifier A, it continues to enter the auxiliary solution dehumidification of the second-stage processing unit I in turn Device C, solution dehumidifier A, the fresh air flows out of the second-stage fresh air processing unit I after exchanging heat and mass with the solution sprayed down from the top of the solution dehumidifier A, to meet the humidity processing requirements of the fresh air. Afterwards, the temperature can be adjusted according to the temperature of the treated fresh air, that is, when the temperature of the fresh air is high, the surface cooler 7 is used to cool the fresh air, wherein the cold source in the surface cooler 7 is a refrigerant such as high-temperature cold water. The fresh air cooled by the surface cooler 7 becomes the supply air, which can be delivered to the required places.
与此同时，再生空气(可为新风或室内排风)由第二级新风处理单元I的溶液再生器B进入，与从溶液再生器B顶部喷淋而下的溶液进行热质交换，实现对溶液的再生；再生空气由第二级溶液再生器B流出后继续进入第一级新风处理单元I的溶液再生器B，再次与从溶液再生器B顶部喷淋而下的溶液进行热质交换后，流出第一级新风处理单元I，成为排风被排走。At the same time, the regenerated air (which can be fresh air or indoor exhaust air) enters from the solution regenerator B of the second-stage fresh air processing unit I, and performs heat and mass exchange with the solution sprayed down from the top of the solution regenerator B to realize regenerating Regeneration of the solution; the regeneration air flows out of the second-stage solution regenerator B and then continues to enter the solution regenerator B of the first-stage fresh air treatment unit I, and then exchanges heat and mass with the solution sprayed down from the top of the solution regenerator B , flow out of the first-level fresh air processing unit I, and become exhaust air and be discharged.
每一级新风处理单元I在工作时，辅助溶液除湿器C底部的溶液通过溶液循环泵5，其大部分作为除湿器内循环溶液被送至其顶部喷淋，与新风进行热质交换。溶液除湿器A底部的溶液大部分流入蒸发器4中，利用蒸发器4对溶液进行降温，以便带走溶液与空气热质交换过程中的热量，增强溶液的除湿能力，之后溶液再被送至溶液除湿器A的顶部喷淋，与新风进行热质交换。从溶液除湿器A底部的溶液还有一部分从底部流出，与从辅助溶液除湿器C底部流出的溶液一起被送至溶液再生器B。When each stage of fresh air processing unit I is working, the solution at the bottom of the auxiliary solution dehumidifier C passes through the solution circulation pump 5, and most of it is sent to the top of the dehumidifier as circulating solution for spraying, and exchanges heat and mass with the fresh air. Most of the solution at the bottom of the solution dehumidifier A flows into the evaporator 4, and the evaporator 4 is used to cool down the solution in order to take away the heat in the heat mass exchange process between the solution and the air and enhance the dehumidification capacity of the solution, and then the solution is sent to The top of the solution dehumidifier A is sprayed to exchange heat and mass with the fresh air. A part of the solution from the bottom of the solution dehumidifier A flows out from the bottom, and is sent to the solution regenerator B together with the solution flowing out from the bottom of the auxiliary solution dehumidifier C.
溶液再生器B底部流出的溶液中大部分流入冷凝器2中，利用冷凝器2对溶液进行加热，以便增大溶液与再生空气间的热质交换驱动力、改善再生效果；加热后的溶液再被送至溶液再生器B顶部喷淋，与再生空气进行热质交换。由溶液再生器B底部流出的其余溶液再被分为两部分，一部分被送回至溶液除湿器A底部，与从溶液除湿器A喷淋而下的溶液混合，另一部分被送回至辅助溶液除湿器C，与辅助溶液除湿器C底部的溶液混合后再被送至辅助溶液除湿器C顶部喷淋，完成整个溶液循环过程。对于在溶液再生器B与溶液除湿器A之间循环的溶液，板式换热器6对流入、流出溶液除湿器A的两股溶液进行热回收。Most of the solution flowing out of the bottom of the solution regenerator B flows into the condenser 2, and the condenser 2 is used to heat the solution in order to increase the driving force of heat and mass exchange between the solution and the regeneration air and improve the regeneration effect; the heated solution is regenerated It is sent to the top of the solution regenerator B for spraying, and performs heat and mass exchange with the regenerating air. The remaining solution flowing from the bottom of solution regenerator B is divided into two parts, one part is sent back to the bottom of solution dehumidifier A, mixed with the solution sprayed down from solution dehumidifier A, and the other part is sent back to the auxiliary solution The dehumidifier C is mixed with the solution at the bottom of the auxiliary solution dehumidifier C and then sent to the top of the auxiliary solution dehumidifier C for spraying to complete the entire solution circulation process. For the solution circulating between the solution regenerator B and the solution dehumidifier A, the plate heat exchanger 6 performs heat recovery on the two streams of solution flowing into and out of the solution dehumidifier A.
蒸发器4负责对流出溶液除湿器A的大部分溶液降温，冷凝器2则负责对流出溶液再生器B的大部分溶液加热。蒸发器4中的制冷剂等冷媒与由溶液除湿器A流出的溶液换热后，制冷剂发生相变成为气态后流入压缩机1，被压缩机1压缩后再进入冷凝器2，并与从溶液再生器B中流出的溶液换热，气态制冷剂被冷凝。之后制冷剂继续流经膨胀阀3，并最终流回至蒸发器4，完成整个热泵循环处理过程。The evaporator 4 is responsible for cooling most of the solution flowing out of the solution dehumidifier A, and the condenser 2 is responsible for heating most of the solution flowing out of the solution regenerator B. After the refrigerant such as the refrigerant in the evaporator 4 exchanges heat with the solution flowing out of the solution dehumidifier A, the refrigerant undergoes a phase change into a gaseous state and then flows into the compressor 1, is compressed by the compressor 1 and then enters the condenser 2, and is connected with the The solution flowing out of the solution regenerator B exchanges heat, and the gaseous refrigerant is condensed. Afterwards, the refrigerant continues to flow through the expansion valve 3 and finally flows back to the evaporator 4 to complete the entire heat pump cycle process.
实施例二：Embodiment two:
如图2所示，本实施例与实施例一的差别在于：在各级新风处理单元中均不再设置有辅助溶液除湿器C，而整个新风处理机组中仅设置有一个辅助溶液除湿器C，其设置在第一级新风处理单元I的溶液除湿器A的前方，辅助溶液除湿器C一溶液循环泵5连接组成除湿器内溶液循环回路，辅助溶液除湿器C与各级新风处理单元I的溶液再生器B连接组成溶液循环回路。As shown in Figure 2, the difference between this embodiment and Embodiment 1 is that no auxiliary solution dehumidifier C is installed in the fresh air treatment units at all levels, and only one auxiliary solution dehumidifier C is installed in the whole fresh air treatment unit , which is arranged in front of the solution dehumidifier A of the first-stage fresh air processing unit I, the auxiliary solution dehumidifier C and the solution circulation pump 5 are connected to form a solution circulation loop in the dehumidifier, and the auxiliary solution dehumidifier C is connected to the fresh air processing unit I at all levels The solution regenerator B is connected to form a solution circulation loop.
本实施例的新风处理机组的工作原理(以包括两级新风处理单元I的新风处理机组为例说明本实施例)，仅在关于辅助溶液除湿器C的设置上有所差别，如图2所示，新风依次流经辅助溶液除湿器C、两级新风处理单元I的溶液除湿器A、表冷器7。由溶液再生器B流出的小部分溶液共同流入辅助除湿器C；由辅助除湿器C流出的溶液则分为两部分，分别流入两级新风处理单元I的溶液再生器B。The working principle of the fresh air treatment unit of this embodiment (the fresh air treatment unit including two-stage fresh air treatment unit 1 is used as an example to illustrate this embodiment), only differs in the setting of the auxiliary solution dehumidifier C, as shown in Figure 2 As shown, the fresh air flows through the auxiliary solution dehumidifier C, the solution dehumidifier A of the two-stage fresh air processing unit I, and the surface cooler 7 in sequence. A small part of the solution flowing out of the solution regenerator B flows into the auxiliary dehumidifier C; the solution flowing out of the auxiliary dehumidifier C is divided into two parts, which flow into the solution regenerator B of the two-stage fresh air processing unit I respectively.
对于溶液在溶液除湿器A内部、溶液再生器B内部、溶液除湿器A与溶液再生器B之间的循环过程，热泵循环过程，再生空气的处理过程等，则与实施例一相同。For the circulation process of the solution in the solution dehumidifier A, the solution regenerator B, between the solution dehumidifier A and the solution regenerator B, the heat pump circulation process, the treatment process of the regenerated air, etc., it is the same as the first embodiment.
本发明仅以上述实施例进行说明，各部件的结构、设置位置及其连接都是可以有所变化的，在本发明技术方案的基础上，凡根据本发明原理对个别部件进行的改进和等同变换，均不应排除在本发明的保护范围之外。The present invention is only described with the above-mentioned embodiment, and the structure, setting position and connection of each component can be changed. On the basis of the technical solution of the present invention, all improvements and equivalents to individual components according to the principles of the present invention Any transformation shall not be excluded from the protection scope of the present invention.
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