CN108317632B - Air conditioning system - Google Patents
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- CN108317632B CN108317632B CN201710041146.4A CN201710041146A CN108317632B CN 108317632 B CN108317632 B CN 108317632B CN 201710041146 A CN201710041146 A CN 201710041146A CN 108317632 B CN108317632 B CN 108317632B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 60
- 238000001816 cooling Methods 0.000 claims abstract description 102
- 230000007246 mechanism Effects 0.000 claims abstract description 101
- 239000003507 refrigerant Substances 0.000 claims abstract description 38
- 238000005057 refrigeration Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 53
- 239000007788 liquid Substances 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 238000007791 dehumidification Methods 0.000 abstract description 10
- 239000000110 cooling liquid Substances 0.000 abstract 4
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F24F3/1405—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 in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
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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
- F24F13/28—Arrangement or mounting of filters
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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
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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Abstract
本发明涉及一种空调系统，包括除湿机、第二新回风混合机构和第二表冷机构，除湿机包括沿风向依次设置的第一新回风混合机构、第一表冷机构和出风机构，制冷管路中的制冷液依次流经第一表冷机构和第二表冷机构，即制冷液先流入第一表冷机构，进行除湿处理，制冷液的温度上升，制冷液从第一表冷机构中流出，然后流入到第二表冷机构中，那么，进入到第二表冷机构中的制冷液的温度就会有所上升，利用这种温度有一定上升的制冷液在第二表冷机构中风进行降温处理，所以，该空调系统利用单冷源即可实现全空调系统的温湿度独立控制，并且该空调系统结构简单，涉及到的设备较少。
The invention relates to an air conditioning system, comprising a dehumidifier, a second fresh return air mixing mechanism and a second surface cooling mechanism. The dehumidifier includes a first fresh return air mixing mechanism, a first surface cooling mechanism and an outlet air arranged in sequence along the wind direction The cooling liquid in the refrigeration pipeline flows through the first surface cooling mechanism and the second surface cooling mechanism in turn, that is, the cooling liquid first flows into the first surface cooling mechanism for dehumidification treatment, the temperature of the cooling liquid rises, and the cooling liquid flows from the first surface cooling mechanism to the first surface cooling mechanism. It flows out from the surface cooling mechanism and then flows into the second surface cooling mechanism. Then, the temperature of the refrigerant entering into the second surface cooling mechanism will rise, and the refrigerant with a certain temperature rise will be used in the second surface cooling mechanism. The surface cooling mechanism performs air cooling treatment, so the air conditioning system can realize the independent temperature and humidity control of the full air conditioning system by using a single cold source, and the air conditioning system has a simple structure and involves less equipment.
Description
技术领域technical field
本发明涉及一种空调系统，属于工业用空调系统。The invention relates to an air conditioning system, belonging to an industrial air conditioning system.
背景技术Background technique
为解决工艺性空调系统在夏季除湿工况下，机组热湿处理过程中存在的冷热抵消、能源浪费的现象，空调系统通常采用二次回风的方式进行热湿调节，通过减少除湿造成的过冷或是降低再热能源的消耗，来缓解冷热抵消的能源浪费现象。In order to solve the phenomenon of cold and heat offset and energy waste in the process of heat and humidity treatment of the technological air-conditioning system under the dehumidification condition in summer, the air-conditioning system usually adopts the method of secondary return air to adjust the heat and humidity. Cooling or reducing the consumption of reheating energy to alleviate the energy waste phenomenon of cold and heat offset.
而且，现有的空调系统大多是基于溶液热回收及高、低温冷水机组的双冷源除湿技术实现的，其中一个冷源排除室内余湿，另一个冷源排除室内余热。如果使用两种冷源，需要设置两个制冷系统，以及与制冷相关的设备和管路等，并且，还需要对空调系统的其他部分，比如：表冷，进行相应地改造。因此，现有的空调系统无法适应现代化工业的要求，如果想要实现上述功能，就需要大幅度增大现有工业空调系统的投入成本，目前虽然有这方面的研究，但是新研制的工业空调系统不但投入费用高，而且结构较为复杂，这就对前期的设计和后期的施工造成很大的困扰。Moreover, most of the existing air conditioning systems are realized based on solution heat recovery and dual cold source dehumidification technology of high and low temperature chillers. One cold source removes indoor residual humidity, and the other cold source removes indoor residual heat. If two cold sources are used, two refrigeration systems, as well as refrigeration-related equipment and pipelines, need to be set up, and other parts of the air-conditioning system, such as surface cooling, need to be modified accordingly. Therefore, the existing air-conditioning system cannot meet the requirements of modern industry. If you want to achieve the above functions, you need to greatly increase the investment cost of the existing industrial air-conditioning system. Although there is research in this area, the newly developed industrial air-conditioning system The system not only has a high investment cost, but also has a complex structure, which causes great trouble to the early design and later construction.
发明内容SUMMARY OF THE INVENTION
本发明的目的是提供一种空调系统，用以解决现有的工业空调系统结构复杂的问题。The purpose of the present invention is to provide an air-conditioning system to solve the problem of complex structure of the existing industrial air-conditioning system.
为实现上述目的，本发明的方案包括一种空调系统，包括除湿机，所述除湿机包括沿风向依次设置的第一新回风混合机构、第一表冷机构和出风机构，所述空调系统还包括第二新回风混合机构和第二表冷机构，所述第一新回风混合机构设置有用于通入新风的第一新风输入端口和用于通入回风的第一回风输入端口，所述出风机构的出风口通过送风管道与所述第二新回风混合机构的混合气输入端口连通，所述第二新回风混合机构还设置有用于通入回风的第二回风输入端口，所述第二新回风混合机构和第二表冷机构沿风向依次设置；所述空调系统还包括有制冷系统，所述制冷系统中有制冷管路，所述制冷管路中的制冷液依次流经第一表冷机构和第二表冷机构。In order to achieve the above object, the solution of the present invention includes an air conditioning system, including a dehumidifier, and the dehumidifier includes a first fresh return air mixing mechanism, a first surface cooling mechanism and an air outlet mechanism arranged in sequence along the wind direction, and the air conditioner The system also includes a second fresh return air mixing mechanism and a second surface cooling mechanism, the first fresh return air mixing mechanism is provided with a first fresh air input port for introducing fresh air and a first return air for introducing return air The input port, the air outlet of the air outlet mechanism is communicated with the mixed gas input port of the second fresh return air mixing mechanism through the air supply duct, and the second fresh return air mixing mechanism is also provided with a return air inlet port. The second return air input port, the second fresh return air mixing mechanism and the second surface cooling mechanism are arranged in sequence along the wind direction; the air conditioning system further includes a refrigeration system, and the refrigeration system has a refrigeration pipeline, and the refrigeration system The refrigerant liquid in the pipeline flows through the first surface cooling mechanism and the second surface cooling mechanism in sequence.
所述第二新回风混合机构还设置有用于通入新风的第二新风输入端口。The second fresh air mixing mechanism is also provided with a second fresh air input port for introducing fresh air.
所述第一新回风混合机构和第一表冷机构之间设置有第一过滤机构，所述第二新回风混合机构和第二表冷机构之间设置有第二过滤机构。A first filter mechanism is arranged between the first fresh return air mixing mechanism and the first surface cooling mechanism, and a second filter mechanism is arranged between the second fresh return air mixing mechanism and the second surface cooling mechanism.
所述第一新风输入端口处设置有用于调节输入新风量的第一新风调节阀，所述第二新风输入端口处设置有用于调节输入新风量的第二新风调节阀。The first fresh air input port is provided with a first fresh air regulating valve for adjusting the input fresh air volume, and the second fresh air input port is provided with a second fresh air regulating valve for adjusting the input fresh air volume.
所述第一回风输入端口处设置有用于调节输入回风量的第一回风调节阀，所述第二回风输入端口处设置有用于调节输入回风量的第二回风调节阀。The first return air input port is provided with a first return air regulating valve for adjusting the input return air volume, and the second return air input port is provided with a second return air regulating valve for adjusting the input return air volume.
所述制冷系统包括制冷机组和回水管路，所述制冷机组输出连通所述制冷管路，第二表冷机构流出的制冷液由所述回水管路回流到所述制冷机组中。The refrigeration system includes a refrigeration unit and a return water pipeline, the output of the refrigeration unit is connected to the refrigeration pipeline, and the refrigerant liquid flowing out of the second surface cooling unit is returned to the refrigeration unit through the return water pipeline.
所述第一表冷机构的制冷液输入端设置有第一表冷阀。The refrigerant liquid input end of the first surface cooling mechanism is provided with a first surface cooling valve.
所述第二表冷机构的制冷液输入端设置有第二表冷阀，所述第二表冷阀为三通阀，所述三通阀的第三个端口连通所述回水管路。The refrigerant liquid input end of the second surface cooling mechanism is provided with a second surface cooling valve, the second surface cooling valve is a three-way valve, and the third port of the three-way valve is connected to the return water pipeline.
所述制冷机组还输出连通一条补水管路，所述补水管路连通所述第一表冷机构和第二表冷机构之间的制冷管路，所述补水管道上设置有补水阀。The refrigerating unit also outputs and communicates with a water supply pipeline, the water supply pipeline is connected to the refrigeration pipeline between the first surface cooling mechanism and the second surface cooling mechanism, and a water supply valve is arranged on the water supply pipeline.
所述空调系统还包括加热部分、加湿部分和送风机，所述第二表冷机构的出风口依次连通所述加热部分、加湿部分和送风机。The air conditioning system further includes a heating part, a humidifying part and a blower, and the air outlet of the second surface cooling mechanism is sequentially connected to the heating part, the humidifier and the blower.
本发明提供的空调系统中，设置有除湿机，该除湿机内部包括沿风向依次设置有第一新回风混合机构、第一表冷机构和出风机构，而且在出风机构的出风口之后还依次设置有第二新回风混合机构和第二表冷机构。依次设置的两个表冷机构能够分别进行室内除湿以及室内降温，满足室内湿度和温度的要求，有效解决了夏季传统温湿联合调节模式下冷热抵消、能源浪费等问题，确保空调机组除湿能耗有一定下降，提高了空调系统的运行效率，保证了生产顺利进行。而且，制冷管路中的制冷液依次流经第一表冷机构和第二表冷机构，即制冷液先流入第一表冷机构，进行除湿处理，制冷液的温度上升，制冷液从第一表冷机构中流出，然后流入到第二表冷机构中，那么，进入到第二表冷机构中的制冷液的温度就会有所上升，利用这种温度有一定上升的制冷液在第二表冷机构中进行降温处理，所以，该空调系统利用第二表冷机构所需制冷液的温度比第一表冷机构所需制冷液的温度高的原理，第一表冷机构利用后的制冷液为第二表冷机构使用，实现了制冷液的二次利用，因此，仅利用单冷源就可实现全空调系统的温湿度独立控制。相对于现有的双冷源，本发明提供的空调系统结构简单，涉及到的设备较少，无需对现有的工业空调系统进行较大程度的改造，改造成本较低，并且，在实际生产中，投入成本较低，不但简化了前期的设计，而且便于后期的施工。In the air conditioning system provided by the present invention, a dehumidifier is provided, and the inside of the dehumidifier includes a first fresh return air mixing mechanism, a first surface cooling mechanism and an air outlet mechanism arranged in sequence along the wind direction, and the air outlet of the air outlet mechanism is located behind the air outlet of the air outlet mechanism. A second new return air mixing mechanism and a second surface cooling mechanism are also arranged in sequence. The two surface cooling mechanisms set up in sequence can perform indoor dehumidification and indoor cooling respectively to meet the requirements of indoor humidity and temperature, effectively solve the problems of cold and heat offset and energy waste in the traditional combined temperature and humidity adjustment mode in summer, and ensure the dehumidification of the air conditioning unit. The consumption is reduced to a certain extent, which improves the operation efficiency of the air-conditioning system and ensures the smooth progress of production. Moreover, the refrigerant liquid in the refrigeration pipeline flows through the first surface cooling mechanism and the second surface cooling mechanism in sequence, that is, the refrigerant liquid first flows into the first surface cooling mechanism for dehumidification treatment, the temperature of the refrigerant liquid rises, and the refrigerant liquid flows from the first surface cooling mechanism to the first surface cooling mechanism. It flows out from the surface cooling mechanism and then flows into the second surface cooling mechanism. Then, the temperature of the refrigerant entering into the second surface cooling mechanism will rise, and the refrigerant with a certain temperature rise will be used in the second surface cooling mechanism. The cooling process is performed in the surface cooling mechanism. Therefore, the air conditioning system uses the principle that the temperature of the refrigerant required by the second surface cooling mechanism is higher than that of the first surface cooling mechanism. The liquid is used by the second surface cooling mechanism, which realizes the secondary utilization of the refrigerant liquid. Therefore, the temperature and humidity of the full air-conditioning system can be independently controlled by only using a single cooling source. Compared with the existing dual cold sources, the air conditioning system provided by the present invention has a simple structure, involves less equipment, does not need to carry out a large transformation on the existing industrial air conditioning system, and has lower transformation costs. In the middle, the input cost is low, which not only simplifies the design in the early stage, but also facilitates the construction in the later stage.
附图说明Description of drawings
图1是空调系统结构示意图；Fig. 1 is a schematic diagram of the structure of an air-conditioning system;
图2是空调系统控制原理示意图。Figure 2 is a schematic diagram of the control principle of the air-conditioning system.
具体实施方式Detailed ways
本发明提供的空调系统用于广泛，适用于各种生产型企业，本实施例中，该空调系统以应用于卷烟厂为例。而且，该空调系统为生产车间(室内)提供调节后的空气，并利用生产车间的回风，回风是指空调系统为生产车间提供调节后的空气之后从生产车间排出的空气。以下对该空调系统做进一步详细的说明。The air-conditioning system provided by the present invention is widely used and is suitable for various production enterprises. In this embodiment, the air-conditioning system is applied to a cigarette factory as an example. Moreover, the air conditioning system provides conditioned air for the production workshop (indoor), and utilizes the return air of the production workshop. The return air refers to the air discharged from the production workshop after the air conditioning system provides the conditioned air for the production workshop. The air conditioning system will be described in further detail below.
如图1所示，在空调系统中的新风管道上旁路安装除湿机，除湿机尺寸按照满足空调机组最小新风量需求设计。除湿机设计四个功能段，按照气流方向依次是：第一新回风混合段、第一过滤段、第一表冷段和出风段。每个功能段对应相应的机构，即这四个功能段分别是第一新回风混合机构、第一过滤机构、第一表冷机构和出风机构，并且，每个机构内设置有实现对应功能的相关设备，比如：第一过滤机构内设置有过滤器，该过滤器用于清除新风中的灰尘；第一表冷机构内设置表冷器(称为一次表冷器)，用于新风除湿。As shown in Figure 1, a dehumidifier is installed by bypass on the fresh air duct in the air conditioning system, and the size of the dehumidifier is designed to meet the minimum fresh air volume requirements of the air conditioning unit. The dehumidifier is designed with four functional sections, which are in sequence according to the airflow direction: the first new return air mixing section, the first filter section, the first surface cooling section and the air outlet section. Each functional section corresponds to a corresponding mechanism, that is, the four functional sections are the first new return air mixing mechanism, the first filtering mechanism, the first surface cooling mechanism and the air outlet mechanism, and each mechanism is provided with a corresponding mechanism. Function-related equipment, such as: a filter is set in the first filter mechanism, and the filter is used to remove dust in the fresh air; a surface cooler (called a primary surface cooler) is set in the first surface cooling mechanism for fresh air dehumidification .
第一新回风混合段上设置有两个输入端口，分别是第一新风输入端口和第一回风输入端口，第一新风输入端口与新风管道连通，用于向空调系统中输入新风，新风是指从外界输入给空调系统的空气，并非从生产车间排出的空气；第一回风输入端口与回风管道连通，用于向空调系统中输入回风。另外，为了能够调节进入第一新回风混合段内的回风的风量，在第一新回风混合段上的第一回风输入端口处设置有第一回风调节阀，为一次回风阀；同理，为了能够调节进入第一新回风混合段内的新风的风量，在第一新回风混合段上的第一新风输入端口处设置有第一新风调节阀，为一次新风阀。如图1所示，回风管道通过一次回风管连接第一回风输入端口，新风管道通过一次新风管连接第一新风输入端口。在一次新风管及一次回风管上可分别安装风量计，用来分别测算风量，用于当作一次新风阀和一次回风阀控制的计算依据。The first fresh air mixing section is provided with two input ports, which are the first fresh air input port and the first return air input port, respectively. It refers to the air input to the air conditioning system from the outside, not the air discharged from the production workshop; the first return air input port is connected to the return air duct for inputting the return air into the air conditioning system. In addition, in order to be able to adjust the air volume of the return air entering the first new return air mixing section, a first return air regulating valve is provided at the first return air input port on the first new return air mixing section, which is the primary return air. In the same way, in order to be able to adjust the air volume of the fresh air entering the first fresh return air mixing section, a first fresh air regulating valve is provided at the first fresh air input port on the first fresh return air mixing section, which is a primary fresh air valve . As shown in FIG. 1 , the return air duct is connected to the first return air input port through the primary return air duct, and the fresh air duct is connected to the first fresh air input port through the primary fresh air duct. Air volume meters can be installed on the primary fresh air duct and the primary return air duct respectively to measure the air volume respectively, which is used as the calculation basis for the control of the primary fresh air valve and the primary return air valve.
新风和回风在第一新回风混合段内进行混合，产生的混合气体依次经过第一过滤段中的过滤器的过滤和第一表冷段的除湿后经出风段输出。The fresh air and return air are mixed in the first fresh return air mixing section, and the generated mixed gas is sequentially filtered by the filter in the first filter section and dehumidified in the first surface cooling section and then output through the air outlet section.
如图1所示，该空调系统还包括按照气流方向依次设置的第二新回风混合段、第二过滤段和第二表冷段，与上述除湿机同理，这三个功能段也分别对应相应的机构，分别是第二新回风混合机构、第二过滤机构和第二表冷机构，并且，每个机构内设置实现对应功能的相关设备，比如：第二过滤机构内设置有过滤器，该过滤器用于清除灰尘；第二表冷机构内设置表冷器(称为二次表冷器)，为了节约设备投入，二次表冷器可以为空调机组原配的表冷器。并且，二次表冷器的作用是用于降温控制。As shown in Figure 1, the air conditioning system also includes a second new return air mixing section, a second filter section and a second surface cooling section arranged in sequence according to the airflow direction. Similar to the above dehumidifier, these three functional sections are also Corresponding mechanisms are the second new return air mixing mechanism, the second filter mechanism and the second surface cooling mechanism, and each mechanism is provided with relevant equipment to realize the corresponding functions, for example: the second filter mechanism is provided with a filter The filter is used to remove dust; a surface cooler (called a secondary surface cooler) is set in the second surface cooling mechanism. In order to save equipment investment, the secondary surface cooler can be the original surface cooler of the air-conditioning unit. In addition, the role of the secondary surface cooler is for cooling control.
除湿机中的出风段的出风口通过送风管道与第二新回风混合段的混合气输入端口连通，用于将经除湿机处理后的气体输送至第二新回风混合段。与上述第一新回风混合段类似，第二新回风混合段上也设置有回风输入端口和新风输入端口，分别是第二回风输入端口和第二新风输入端口，回风通道通过第二回风输入端口为第二新回风混合段输入回风，新风通道通过第二新风输入端口为第二新回风混合段输入新风。第二新回风混合段与第一新回风混合段的功能类似，均是用于新风和回风的混合。第二新风输入端口处设置有第二新风调节阀，为二次新风阀，用于调节输入新风量；第二回风输入端口处设置有第二回风调节阀，为二次回风阀，用于调节输入回风量。The air outlet of the air outlet section in the dehumidifier is communicated with the mixed gas input port of the second fresh return air mixing section through the air supply duct, and is used to transport the gas treated by the dehumidifier to the second fresh return air mixing section. Similar to the above-mentioned first new return air mixing section, the second new return air mixing section is also provided with a return air input port and a fresh air input port, which are the second return air input port and the second fresh air input port respectively, and the return air channel passes through. The second return air input port inputs return air to the second fresh return air mixing section, and the fresh air channel inputs fresh air to the second fresh return air mixing section through the second fresh air input port. The function of the second fresh return air mixing section is similar to that of the first fresh return air mixing section, and both are used for mixing fresh air and return air. The second fresh air input port is provided with a second fresh air regulating valve, which is a secondary fresh air valve, and is used to adjust the input fresh air volume; the second return air input port is provided with a second return air regulating valve, which is a secondary return air valve and is used for adjusting the input fresh air volume. To adjust the input return air volume.
另外，利用第一过滤段和第二过滤段能够分别实现一次过滤和二次过滤，当然，这只是一种优化的实施方式，作为其他的实施方式，当回风和新风中的灰尘原本就较少时，第一过滤段和第二过滤段可以不用设置。In addition, the first filter section and the second filter section can be used to achieve primary filtration and secondary filtration, of course, this is only an optimized implementation. As other implementations, when the dust in the return air and fresh air is relatively low When it is small, the first filter section and the second filter section may not be set.
如图2所示，该空调系统还包括制冷机组，制冷机组用于产生制冷液(也称为冷媒水)；制冷机组输出连通有制冷管路，制冷管路依次流经第一表冷段和第二表冷段，以冷媒水的流动来说，冷媒水从制冷机组中输出，并流入到第一表冷段中，为第一表冷段使用，然后从第一表冷段流出的冷媒水流入第二表冷段中，为第二表冷段使用，从第二表冷段中流出的冷媒水回流到制冷机组中。因此，制冷管路可以说将一次表冷器和一次表冷器串联在了一起，如图2所示，制冷管路输出连接一次表冷器的冷媒水输入端，一次表冷器的冷媒水输出端通过管路连通二次表冷器的冷媒水输入端，二次表冷器的冷媒水输出端通过回水管路回流到制冷机组中。As shown in Figure 2, the air conditioning system also includes a refrigeration unit, which is used to generate refrigeration liquid (also called refrigerant water); the output of the refrigeration unit is connected with a refrigeration pipeline, and the refrigeration pipeline flows through the first surface cooling section and the In the second surface cooling section, in terms of the flow of refrigerant water, the refrigerant water is output from the refrigeration unit and flows into the first surface cooling section for use in the first surface cooling section, and then the refrigerant flowing out from the first surface cooling section The water flows into the second surface cooling section and is used for the second surface cooling section, and the refrigerant water flowing out from the second surface cooling section is returned to the refrigeration unit. Therefore, the refrigeration pipeline can be said to connect the primary surface cooler and the primary surface cooler in series. As shown in Figure 2, the output of the refrigeration pipeline is connected to the refrigerant water input end of the primary surface cooler, and the refrigerant water of the primary surface cooler is connected in series. The output end is connected to the refrigerant water input end of the secondary surface cooler through a pipeline, and the refrigerant water output end of the secondary surface cooler is returned to the refrigeration unit through a return water pipeline.
而且，一次表冷器的冷媒水输入端处设置有第一表冷阀，即一次表冷阀，二次表冷器的冷媒水输入端处设置有第二表冷阀，即二次表冷阀。一次表冷阀和二次表冷阀分别用于调节对应表冷器的冷媒水供水流量。并且，二次表冷阀为三通阀，该三通阀的其中两个端口串设在制冷管路上，第三个端口连通回水管路。Moreover, a first surface cooling valve, that is, a primary surface cooling valve, is provided at the refrigerant water input end of the primary surface cooler, and a second surface cooling valve, that is, a secondary surface cooling valve, is arranged at the refrigerant water input end of the secondary surface cooler. valve. The primary surface cooling valve and the secondary surface cooling valve are respectively used to adjust the water supply flow rate of the refrigerant water corresponding to the surface cooler. In addition, the secondary surface cooling valve is a three-way valve, two ports of the three-way valve are arranged in series on the refrigeration pipeline, and the third port is connected to the return water pipeline.
制冷机组生产的7～9℃冷媒水(低温冷源)首先进入一次表冷器，对新风进行除湿处理，通过调节阀的控制调节，利用风、水热交换造成的温升，使进入二次表冷器的冷媒水的温度升高3～5℃，得到一种高温冷源，用于机组全风量的降温处理，实现单冷源的温湿度独立控制。通过除湿机(一次表冷器)处理后的冷干空气与机组回风混合，以降低送风湿度，达到除湿、降温的目的，二次表冷器对混合后温度未满足要求的混风进一步进行降温处理。另外，当机组有降温需求时，调节三通阀的导通通道，使高温冷源的冷媒水进入二次表冷器，对混风进行降温；当机组无降温需求时，调节三通阀的导通通道，冷媒水不经二次表冷器而直接回流到回水管路。同时，为了避免二次表冷器进水温度过高不能满足使用要求，系统设置补水电动阀，可将低温冷媒水直接供入二次表冷器，降低其进水温度。具体为：制冷机组输出连通一条补水管路，该补水管路与一次表冷器和二次表冷器之间的制冷管路相连通，该补水管道上设置上述补水电动阀。The 7~9℃ refrigerant water (low temperature cold source) produced by the refrigeration unit first enters the primary surface cooler to dehumidify the fresh air. Through the control and adjustment of the regulating valve, the temperature rise caused by the heat exchange between wind and water is used to make it enter the secondary The temperature of the refrigerant water in the surface cooler is increased by 3 to 5°C, and a high temperature cold source is obtained, which is used for the cooling treatment of the whole air volume of the unit, and realizes the independent control of temperature and humidity of a single cold source. The cold and dry air treated by the dehumidifier (primary surface cooler) is mixed with the return air of the unit to reduce the humidity of the supply air and achieve the purpose of dehumidification and cooling. Perform cooling treatment. In addition, when the unit has a cooling demand, adjust the conduction channel of the three-way valve, so that the refrigerant water of the high temperature cold source enters the secondary surface cooler to cool the mixed air; when the unit has no cooling demand, adjust the three-way valve. Conduction channel, the refrigerant water is directly returned to the return water pipeline without passing through the secondary surface cooler. At the same time, in order to prevent the inlet water temperature of the secondary surface cooler from being too high to meet the requirements of use, the system is equipped with an electric water supply valve, which can directly supply low-temperature refrigerant water into the secondary surface cooler to reduce its inlet water temperature. Specifically, the output of the refrigeration unit is connected to a water supply pipeline, the water supply pipeline is connected to the refrigeration pipeline between the primary surface cooler and the secondary surface cooler, and the water supply electric valve is provided on the water supply pipeline.
该空调系统中还可包括其他的部分，比如加热部分、加湿部分和送风机，二次表冷器的出气口依次连通加热部分、加湿部分和送风机，送风机的输出端为该空调系统的输出端，送风机输出连接到需要的地方，比如图2中的室内。另外，回风机用于将室内的空气经过回风通道排出，该回风通道就是上述为第一新回风混合段和第二新回风混合段输入回风的回风通道。The air-conditioning system may also include other parts, such as a heating part, a humidifying part and a blower. The air outlet of the secondary surface cooler is connected to the heating part, the humidifying part and the blower in sequence, and the output end of the blower is the output end of the air-conditioning system. The blower output is connected where needed, such as indoors in Figure 2. In addition, the return fan is used to discharge the indoor air through the return air passage, which is the above-mentioned return air passage for inputting return air to the first fresh return air mixing section and the second fresh return air mixing section.
该空调系统中的调节阀的种类均可以根据具体情况来具体设置，比如：可以设置成手动阀，人工根据实际需要来进行调节；也可以是电动阀，根据采集到的参量来相应控制阀门的通断和开度。The types of regulating valves in the air-conditioning system can be set according to specific conditions. For example, it can be set as a manual valve, which can be adjusted manually according to actual needs; it can also be an electric valve, which can control the valve according to the collected parameters. On-off and opening.
二次新风阀和二次回风阀的控制思路是：在冬季及季节交替时，仍按原来设定好的变新风比或全新风运行，通过切换二次新风阀，新风可直接进入二次新回风混合段，不再经过除湿机，即一次新风阀及一次表冷阀同时关闭，二次新风阀打开；当室外处于夏季除湿工况时，二次新风阀处于关闭状态，一次新风阀及一次表冷阀开度随机调节。因此，如果该空调系统只在夏季除湿工况下使用，那么，二次新风阀始终处于关闭状态，则，二次新风阀以及第二新风输入端口均可以不设置。The control idea of the secondary fresh air valve and the secondary return air valve is: in winter and when the seasons alternate, it is still operated according to the original set fresh air ratio or fresh air. By switching the secondary fresh air valve, the fresh air can directly enter the secondary fresh air. The return air mixing section no longer passes through the dehumidifier, that is, the primary fresh air valve and the primary surface cooling valve are closed at the same time, and the secondary fresh air valve is opened; when the outdoor is in the summer dehumidification condition, the secondary fresh air valve is closed, and the primary fresh air valve and The opening of the primary cooling valve is adjusted randomly. Therefore, if the air conditioning system is only used in the summer dehumidification condition, the secondary fresh air valve is always in a closed state, and neither the secondary fresh air valve nor the second fresh air input port is required.
本实施例中，基于以上空调系统，以下给出一种控制策略，当然，该控制策略只是一种实施方式，空调系统并不局限于该控制策略。In this embodiment, based on the above air conditioning system, a control strategy is given below. Of course, this control strategy is only an implementation manner, and the air conditioning system is not limited to this control strategy.
当一次表冷阀为通过控制信号进行开度调节的电动阀时，则其控制思路是：空调系统可以通过安装风量计、水温计，测得风量、温湿度等参数，进而可推导、计算出经过一次表冷器处理后，空气温湿度应达到的目标值。When the primary surface cooling valve is an electric valve whose opening is adjusted by a control signal, the control idea is as follows: the air conditioning system can install air volume meters and water temperature meters to measure parameters such as air volume, temperature and humidity, and then derive and calculate The target value that the air temperature and humidity should reach after a surface cooler treatment.
其中：in:
式中：T1SP—一次表冷器处理后应达到的温度目标值，℃；FS—送风风量，m3/h；TSO—送风状态点温度，℃；FR—回风风量，m3/h；F2—一次表冷器处理的回风量，m3/h；TR—回风温度，℃；FO—新风风量，m3/h；F1—一次表冷器处理的新风量，m3/h；TO—新风温度，℃。In the formula: T 1SP — the temperature target value that should be reached after primary surface cooler treatment, °C; F S — supply air volume, m 3 /h; T SO — supply air state point temperature, °C; F R — return air volume , m 3 /h; F 2 —return air volume processed by primary surface cooler, m 3 /h; TR — return air temperature, °C; F O — fresh air volume, m 3 /h; F 1 — primary surface cooler Fresh air volume treated, m 3 / h; TO - fresh air temperature, °C.
式中：d1SP—一次表冷器处理后含湿量应达到的目标值，g/kg；dSO—送风状态点含湿量，g/kg；dR—回风含湿量，g/kg；dO—新风含湿量，g/kg。In the formula: d 1SP - the target value of moisture content that should be reached after the primary surface cooler treatment, g/kg; d SO - the moisture content of the supply air state point, g/kg; d R - the moisture content of the return air, g /kg; d O - fresh air moisture content, g/kg.
基于以上推导计算和实际测得的空气和冷媒水的状态参数，机组水阀的控制思路是：采用PID控制，通过调节一次表冷阀、补水阀，使一次表冷器处理后的空气温度值T1PV和含湿量值d1PV，达到目标值T1SP和d1SP的水平，使二次表冷器入口水温值TCPV接近送风状态点露点温度TLSO。Based on the above derivation and calculation and the actual measured state parameters of air and refrigerant water, the control idea of the water valve of the unit is: using PID control, by adjusting the primary surface cooling valve and the water replenishment valve, the air temperature value after the primary surface cooler is processed. T 1PV and moisture content value d 1PV reach the level of target values T 1SP and d 1SP , so that the inlet water temperature value T CPV of the secondary surface cooler is close to the dew point temperature T LSO in the supply air state.
其中，温度回路调节需求量OUT1＝∫(T1SP-T1PV)dt，含湿量回路调节需求量OUT2＝∫(d1SP-d1PV)dt，取OUT1和OUT1中的最大值，用于控制一次表冷阀开度。水温控制回路调节需求量OUT3＝∫(TLSO-TCPV)dt，用于控制补水阀开度，确保二次表冷阀进水温度满足降温需要。使用系统原PID回路及算法对二次表冷阀进行控制，可根据实际使用情况适当调整PID参数。Among them, the temperature loop regulation demand OUT 1 =∫(T 1SP -T 1PV )dt, the moisture content loop regulation demand OUT 2 =∫(d 1SP -d 1PV )dt, take the maximum value of OUT 1 and OUT 1 , used to control the opening of the primary cooling valve. The water temperature control loop adjusts the demand OUT 3 =∫(T LSO -T CPV )dt, which is used to control the opening of the water replenishment valve to ensure that the inlet water temperature of the secondary surface cooling valve meets the cooling requirements. Using the original PID loop and algorithm of the system to control the secondary surface cooling valve, the PID parameters can be adjusted appropriately according to the actual use situation.
上述实施例中给出了一种冷媒水产生和输送结构，包括制冷机组以及对应的传输管道，这只是其中一种实施方式，作为其他的实施方式，只要能够满足两个表冷器的需要，还可以使用其他的冷媒水产生和输送结构。In the above example, a refrigerant water generation and transportation structure is given, including a refrigeration unit and a corresponding transmission pipeline. This is only one of the implementations. As other implementations, as long as the needs of two surface coolers can be met, Other refrigerant water generation and delivery structures may also be used.
以上给出了具体的实施方式，但本发明不局限于所描述的实施方式。本发明的基本思路在于上述空调系统的硬件结构，对本领域普通技术人员而言，根据本发明的教导，设计出各种变形的模型、公式、参数并不需要花费创造性劳动。在不脱离本发明的原理和精神的情况下对实施方式进行的变化、修改、替换和变型仍落入本发明的保护范围内。Specific embodiments are given above, but the present invention is not limited to the described embodiments. The basic idea of the present invention lies in the hardware structure of the above air-conditioning system. For those of ordinary skill in the art, according to the teachings of the present invention, it does not require creative work to design various deformed models, formulas and parameters. Changes, modifications, substitutions and alterations to the embodiments without departing from the principle and spirit of the present invention still fall within the protection scope of the present invention.
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| CN203116200U (en) * | 2013-01-29 | 2013-08-07 | 西安工程大学 | Evaporative cooling air-conditioning system applied to datum machine room |
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| CN204534899U (en) * | 2015-01-28 | 2015-08-05 | 武汉安立杰机电设备工程有限公司 | A kind of laboratory special low humidity precision air conditioner unit |
| CN104864536B (en) * | 2015-06-23 | 2017-05-03 | 向君 | Efficient energy-saving multi-stage heat and humidity treatment air conditioning device and treatment method thereof |
| CN205641276U (en) * | 2016-05-03 | 2016-10-12 | 盐城市华丰空调有限公司 | Noble and unsullied clean air conditioner of compact combination formula |
| 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 |
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- 2017-01-17 CN CN201710041146.4A patent/CN108317632B/en active Active
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