CN109812951A - Efficiency-enhancing system device for low-grade heat in the exhaust air of direct-current air conditioners containing harmful media - Google Patents
Efficiency-enhancing system device for low-grade heat in the exhaust air of direct-current air conditioners containing harmful media Download PDFInfo
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Abstract
Description
技术领域technical field
本发明涉及一种直流式空调含有害介质排风中低品位热量的增效系统装置。The invention relates to a direct-current type air conditioner containing medium and low-grade heat in harmful medium exhaust air.
背景技术Background technique
有一类工艺用房的室内存在着大量有害介质的发生源，如产生大量有害粉尘、挥发性气体、有机溶媒、氨等酸碱无机有害气体，为避免交叉污染，规范或标准规定室内空气不允许用作回风。应采用全新风全排风直流式空调系统，虽然可有效控制室内环境，但能耗极大。There are a large number of sources of harmful media in the interior of a class of process rooms, such as the generation of a large amount of harmful dust, volatile gases, organic solvents, ammonia and other acid-base inorganic harmful gases. In order to avoid cross-contamination, regulations or standards stipulate that indoor air is not allowed. used as return air. The fresh air full exhaust DC air conditioning system should be used, although it can effectively control the indoor environment, but it consumes a lot of energy.
如高级别生物安全实验室内操作经空气传播的致病性生物因子，这些致病性生物因子对人体、动植物或对环境具有高度危险性，主要通过气溶胶使人传染上严重的甚至是致命疾病，或对动植物和环境具有高度危害的因子。有的甚至没有预防和治疗措施。For example, airborne pathogenic biological factors are operated in high-level biosafety laboratories. These pathogenic biological factors are highly dangerous to humans, animals and plants or to the environment, and are mainly transmitted to humans through aerosols. Deadly diseases, or agents that are highly harmful to animals, plants and the environment. Some even have no preventive and therapeutic measures.
如负压隔离病房内有经空气传播并比较容易直接或间接在人与人之间传播、甚至在我国尚未发现或已宣布消灭的微生物传播的严重空气传染疾病(如非典型肺炎、开放型肺结核、耐药性肺结核、麻疹、水痘以及特别严重或具有一种以上传播途径或未知病因的疑似空气传播疾病等)的患者用的病房以及该类患者的专用手术室与诊疗室，综合医院中感染性疾病科用于接受排查疑似空气传染病人的观察室与紧急处治室。For example, in the negative pressure isolation ward, there are serious airborne diseases (such as atypical pneumonia, open pulmonary tuberculosis) that are airborne and are easily transmitted directly or indirectly from person to person, or even spread by microorganisms that have not yet been discovered or have been declared eliminated in my country. , drug-resistant tuberculosis, measles, chickenpox, and suspected airborne diseases that are particularly severe or have more than one route of transmission or unknown etiology, etc.) and special operating rooms and consultation rooms for such patients, general hospital infection The sexually transmitted diseases department is used for the observation room and emergency treatment room for the investigation of suspected airborne infectious patients.
如实验动物房内饲养各种实验动物，实验动物在繁育、生产及实验过程中会发生大量氨等代谢物，污染室内环境，影响着实验动物的繁育、生产和实验过程。For example, various experimental animals are raised in the experimental animal room. During the breeding, production and experiment process of experimental animals, a large amount of ammonia and other metabolites will occur, which will pollute the indoor environment and affect the breeding, production and experimental process of experimental animals.
如各个领域中大量的实验室，当实验室排风柜内操作有害、有毒的化学溶媒、感染性材料、发生高浓度酸碱有害气体等实验对象。Such as a large number of laboratories in various fields, when the laboratory fume hoods operate harmful and toxic chemical solvents, infectious materials, and produce high concentrations of acid and alkali harmful gases and other experimental objects.
上述这类用房由于室内空气含有大量有害物质，或有害物处理成本远远高于新风空调处理的成本，其空调系统的不允许回风，只能采用全新风全排风的直流系统，排走的是室内空调的空气。但直接排放会严重污染或危害周围环境与居民。有的要求采取合适的排风处理装置无害处理后再排放，有的要求高出屋顶一定高度或以一定的风速引射大量周围空气稀释后再高空排放。Because the indoor air contains a lot of harmful substances, or the cost of harmful substances treatment is much higher than the cost of fresh air air conditioning, the air conditioning system does not allow return air, and can only use a direct current system with fresh air and full exhaust air. It is the air from the indoor air conditioner. But direct discharge will seriously pollute or endanger the surrounding environment and residents. Some require appropriate exhaust treatment devices to be used for harmless treatment before discharge, and some require a certain height above the roof or a large amount of ambient air to be diluted at a certain wind speed and then discharged at high altitude.
这类用房为防止有害物渗出，常保持一定负压。有害物危害因素越大、负压越高，排风量越大于新风量。有的用房采用直流式变风量空调系统，排风量相应也会随之变化。又考虑到全热回收装置在新风与排风作全热回收过程中总存在一些渗漏，一般在这类排风中不采用全热回收装置。有的虽然允许采用如图1的中间媒介热回收盘管的热回收装置(图1中：预过滤器11，终过滤器12，冷却盘管13，中间媒介热回收盘管14，送风机14，送风管20，房间100，回风机21)或如图2的热管的热回收装置等进行显热回收，但回收效率不高，特别是南方地区回收效率更低。有的用房被标准或规范中明文规定排风不准采用任何热回收装置。因此这类用房的空调能耗极大。In order to prevent the leakage of harmful substances, such rooms always maintain a certain negative pressure. The greater the harmful factor and the higher the negative pressure, the greater the exhaust air volume is than the fresh air volume. Some rooms use a DC variable air volume air conditioning system, and the exhaust air volume will also change accordingly. Considering that the total heat recovery device always has some leakage during the total heat recovery process of the fresh air and exhaust air, the total heat recovery device is generally not used in this type of exhaust air. Although some allow the use of the heat recovery device of the intermediate medium heat recovery coil as shown in Figure 1 (in Figure 1: pre-filter 11, final filter 12, cooling coil 13, intermediate medium heat recovery coil 14, blower 14, The air supply pipe 20, the room 100, the return fan 21) or the heat recovery device of the heat pipe as shown in Fig. 2 perform sensible heat recovery, but the recovery efficiency is not high, especially in the southern region. In some houses, it is expressly stipulated in the standard or specification that any heat recovery device is not allowed to be used for exhaust air. Therefore, the energy consumption of air conditioners in such rooms is huge.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于克服现有技术的缺陷而提供一种直流式空调含有害介质排风中低品位热量的增效系统装置，它能有效回收含有害介质空调排风中低品位热量，提高热泵机组运行效率，间接降低了直流式空调系统的能耗。The purpose of the present invention is to overcome the defects of the prior art and provide a direct-current air conditioner containing harmful medium and low-grade heat in the exhaust air. The operating efficiency of the unit indirectly reduces the energy consumption of the DC air conditioning system.
本发明的目的是这样实现的：一种直流式空调含有害介质排风中低品位热量的增效系统装置，包括与直流式空调的排风总管连接的空气源热泵、解耦式进风装置、防风罩和排风机构；所述空气源热泵包括热泵箱体和以倾斜方式安装在热泵箱体内的换热器；热泵箱体上相对换热器的表面和换热器的侧面均设置进风口；其中，The purpose of the present invention is to achieve this: a direct-current air conditioner containing low-grade heat in harmful medium exhaust air, including an air source heat pump connected to the exhaust main pipe of the direct-current air conditioner, a decoupling air intake device , a draft shield and an air exhaust mechanism; the air source heat pump includes a heat pump box and a heat exchanger installed in the heat pump box in an inclined manner; tuyere; of which,
所述解耦式进风装置安装在所述热泵箱体的底座上并包括与所述排风总管连接的进风总管和若干与进风总管连接的进风支管，各个进风支管的出风气流对准位于热泵箱体内的换热器的表面；The decoupling air inlet device is installed on the base of the heat pump box and includes an air inlet main pipe connected with the exhaust air main pipe and a plurality of air inlet branch pipes connected with the air inlet main pipe. The flow is aimed at the surface of the heat exchanger located within the heat pump tank;
所述防风罩安装在热泵箱体上与换热器的侧面相对的进风口以及各个进风支管的出风口，使各个进风支管送出的风量不会受机组外阵风的干扰而逸出热泵箱体，让各个进风支管送出的风量和从热泵箱体上与换热器的表面相对的进风口进入热泵箱体的外部空气共同构成空气源热泵所需的通风量；The wind shield is installed on the air inlet opposite to the side of the heat exchanger on the heat pump box and the air outlet of each air inlet branch pipe, so that the air volume sent by each air inlet branch pipe will not be disturbed by the gust outside the unit and escape the heat pump box. The air volume sent by each air inlet branch pipe and the outside air entering the heat pump box from the air inlet on the heat pump box opposite to the surface of the heat exchanger together constitute the ventilation volume required by the air source heat pump;
所述排风机构包括安装在所述空气源热泵的热泵箱体顶板上开设的排风孔上的排风扇以及按照排风要求安装在所述排风孔上的排风筒，该排风筒的高度为0.5米～1.5米且形状呈直圆筒或呈上小下大的圆锥筒。The exhaust mechanism includes an exhaust fan installed on the exhaust hole opened on the top plate of the heat pump box of the air source heat pump and an exhaust duct installed on the exhaust hole according to the exhaust requirements. The height is 0.5 meters to 1.5 meters and the shape is a straight cylinder or a conical cylinder with a small top and a large bottom.
上述的直流式空调含有害介质排风中低品位热量的增效系统装置，其中，所述空气源热泵中的换热器采用翅片式换热器，且为波纹开窗式翅片结构，换热器的换热管采用内螺纹式铜管；该换热器的表面设有厚度为20～30μm的与有害介质的腐蚀性相对应的防腐层。The above-mentioned once-through air conditioner contains a synergistic system device for low-grade heat in the exhaust air of harmful media, wherein the heat exchanger in the air source heat pump adopts a fin-type heat exchanger, and has a corrugated window-type fin structure, The heat exchange tube of the heat exchanger adopts an internal thread copper tube; the surface of the heat exchanger is provided with an anti-corrosion layer with a thickness of 20-30 μm corresponding to the corrosiveness of the harmful medium.
上述的直流式空调含有害介质排风中低品位热量的增效系统装置，其中，所述解耦式进风装置的各个进风支管均设置若干个出风口，每个出风口均设出风格栅。The above-mentioned DC air conditioner contains a system device for enhancing the efficiency of low-grade heat in harmful medium exhaust air, wherein each air inlet branch pipe of the decoupling air inlet device is provided with several air outlets, and each air outlet is provided with an air outlet. grille.
上述的直流式空调含有害介质排风中低品位热量的增效系统装置，其中，所述排风机构还包括设在排风筒的顶部的网格罩，该网格罩的网格口径为20mm。The above-mentioned direct-current air conditioner contains an efficiency-enhancing system device for medium and low-grade heat in harmful medium exhaust air, wherein the air exhaust mechanism also includes a mesh cover arranged on the top of the exhaust duct, and the mesh diameter of the mesh cover is 20mm.
上述的直流式空调含有害介质排风中低品位热量的增效系统装置，其中，所述排风扇的风量为18500m3/h～20000m3/h，风压为100Pa～120Pa。The above-mentioned direct current air conditioner contains a system device for enhancing the efficiency of low-grade heat in harmful medium exhaust air, wherein, the air volume of the exhaust fan is 18500m 3 /h～20000m 3 /h, and the air pressure is 100Pa～120Pa.
本发明的直流式空调含有害介质排风中低品位热量的增效系统装置,结构简单，构思新颖，成本低廉，提高了热泵机组的运行效率，解决了直流式空调系统的排风量与空气源热泵机组运行风量的不匹配的问题，简化了直流式空调排风系统，减少了直流式空调的排风机功率，降低整个系统的运行能耗与热排放，更有利于直流式空调排风中有害物扩散与稀释，加大了排风无害化。本发明具有以下特点：The direct-current air conditioner of the present invention contains an efficiency-enhancing system device of low-grade heat in the exhaust air of the harmful medium, which has the advantages of simple structure, novel design and low cost, improves the operation efficiency of the heat pump unit, and solves the problem of the exhaust air volume and air volume of the direct-current air-conditioning system. The problem of the mismatch of the operating air volume of the source heat pump unit simplifies the exhaust system of the DC air conditioner, reduces the exhaust fan power of the DC air conditioner, reduces the operating energy consumption and heat emission of the entire system, and is more conducive to the exhaust air of the DC air conditioner. The diffusion and dilution of harmful substances increases the harmlessness of exhaust air. The present invention has the following characteristics:
1、本发明在空气源热泵的进风口与直流式空调的排风总管之间设置解耦式进风装置，并在空气源热泵的侧面以及解耦式进风装置的出风口设置防风罩，不仅保证直流式空调的排风量不外逸，还可不受阵风的干扰。由于解耦式进风装置仅将进风支管插入空气源热泵的换热器之间，与空气源热泵之间非管道直接连接，不但解决了直流式空调系统的排风量与空气源热泵所需的通风量不匹配的问题，还能通过大气补风以最低阻力满足空气源热泵正常运行所需的通风量，又能稀释直流式空调的排风中的有害物；1. In the present invention, a decoupling air inlet device is arranged between the air inlet of the air source heat pump and the exhaust main pipe of the DC air conditioner, and a wind shield is arranged on the side of the air source heat pump and the air outlet of the decoupling air inlet device, It not only ensures that the exhaust air volume of the DC air conditioner does not escape, but also is not disturbed by gusts of wind. Because the decoupling air inlet device only inserts the air inlet branch pipe between the heat exchangers of the air source heat pump and is not directly connected with the air source heat pump, it not only solves the problem of the exhaust air volume of the DC air conditioning system and the air source heat pump. It can also meet the ventilation volume required for the normal operation of the air source heat pump with the lowest resistance through the atmospheric supplementary air, and can dilute the harmful substances in the exhaust air of the DC air conditioner;
2、针对排风中有害物腐蚀性对换热器的换热管与翅片作相应的防护处理，并相应优化换热器的结构，以弥补因防护处理而衰减的换热量。另外，为了满足增效系统装置整体性能不降低，对换热器的结构进行优化，以增加换热器的换热效率。2. In view of the corrosiveness of harmful substances in the exhaust air, the heat exchange tubes and fins of the heat exchanger should be protected accordingly, and the structure of the heat exchanger should be optimized accordingly to make up for the attenuated heat exchange due to the protection treatment. In addition, in order to ensure that the overall performance of the efficiency enhancement system device is not reduced, the structure of the heat exchanger is optimized to increase the heat exchange efficiency of the heat exchanger.
3、针对直流式空调的排风高度或出口风速度的要求，在空气源热泵的排风孔上增加直筒式或锥筒式排风筒，以满足法规要求的排风高度或排风速度。3. According to the requirements of the exhaust height or outlet air speed of the DC air conditioner, add a straight or cone-type exhaust duct to the exhaust hole of the air source heat pump to meet the exhaust height or exhaust speed required by the regulations.
4、还采用高风压的排风扇，克服了因换热器的结构或部件改变而导致流经换热器的气流阻力的增大。4. The exhaust fan with high air pressure is also used, which overcomes the increase of airflow resistance flowing through the heat exchanger due to the change of the structure or components of the heat exchanger.
附图说明Description of drawings
图1是现有技术的中间媒介热回收盘管的热回收装置的结构示意图FIG. 1 is a schematic structural diagram of a heat recovery device for an intermediate medium heat recovery coil in the prior art
图2是现有技术的热管的热回收装置的结构示意图；2 is a schematic structural diagram of a heat recovery device for a heat pipe in the prior art;
图3是本发明的直流式空调含有害介质排风中低品位热量的增效系统装置的一种实施例的结构示意图(圆锥形排风筒)；3 is a schematic structural diagram (conical air exhaust duct) of an embodiment of the efficiency-enhancing system device for the direct-current air conditioner of the present invention containing low-grade heat in the exhaust air of harmful medium;
图4是图3的侧视图；Fig. 4 is the side view of Fig. 3;
图5是本发明的直流式空调含有害介质排风中低品位热量的增效系统装置的另一种实施例的结构示意图(直圆形排风筒)；5 is a schematic structural diagram of another embodiment of the direct-current air conditioner of the present invention containing low-grade heat in the exhaust air of harmful media (straight circular exhaust duct);
图6a是本发明的直流式空调含有害介质排风中低品位热量的增效系统装置中的换热器的结构示意图；6a is a schematic structural diagram of a heat exchanger in a direct-current air conditioner of the present invention that contains low-grade heat in a harmful medium exhaust air;
图6b是图6a的左侧视图；Figure 6b is a left side view of Figure 6a;
图6c是图6a的右侧视图。Figure 6c is a right side view of Figure 6a.
具体实施方式Detailed ways
下面将结合附图对本发明作进一步说明。The present invention will be further described below with reference to the accompanying drawings.
请参阅图3至图5，本发明的直流式空调含有害介质排风中低品位热量的增效系统装置，包括与直流式空调系统的排风总管非管道硬连接的空气源热泵3、解耦式进风装置、防风罩4和排风机构。Referring to FIGS. 3 to 5 , the DC air conditioner of the present invention contains an efficiency enhancement system device for medium and low-grade heat in the exhaust air of a harmful medium, including an air source heat pump 3, a solution to Coupling air intake device, wind shield 4 and exhaust mechanism.
空气源热泵3包括热泵箱体和安装在热泵箱体内的换热器30，换热器30是以与热泵箱体的底座成一个小于90°夹角的倾斜方式安装在热泵箱体内；换热器30采用翅片式换热器，且翅片32为波纹开窗式结构，换热器30的换热管33采用内螺纹式铜管；该换热器30的表面设有厚度为20～30μm的防腐层；该防腐层是经过电泳处理后形成的；热泵箱体的前后侧板和左右侧板上均相对换热器30开设进风口；本实施例的热泵箱体的前后侧板上的进风口与换热器30的侧面相对，热泵箱体的左右侧板上的进风口与换热器30的表面相对。The air source heat pump 3 includes a heat pump box and a heat exchanger 30 installed in the heat pump box. The heat exchanger 30 is installed in the heat pump box in an inclined manner with an included angle of less than 90° with the base of the heat pump box; heat exchange The heat exchanger 30 adopts a fin-type heat exchanger, and the fins 32 are of corrugated window-type structure, and the heat exchange tube 33 of the heat exchanger 30 adopts an internal thread copper tube; the surface of the heat exchanger 30 is provided with a thickness of 20~ 30μm anti-corrosion layer; the anti-corrosion layer is formed after electrophoresis treatment; the front and rear side plates and the left and right side plates of the heat pump box are provided with air inlets relative to the heat exchanger 30; the front and rear side plates of the heat pump box in this embodiment are The air inlet is opposite to the side of the heat exchanger 30 , and the air inlet on the left and right side panels of the heat pump box is opposite to the surface of the heat exchanger 30 .
解耦式进风装置安装在空气源热泵3的热泵箱体的底座上并包括与直流式空调系统的排风总管连接的进风总管6和若干与进风总管6连接的进风支管5，各个进风支管5设置若干个出风口，以对准位于热泵箱体内的换热器30的表面；各个进风支管5的出风口均设置出风格栅7。The decoupling air inlet device is installed on the base of the heat pump box of the air source heat pump 3 and includes an air inlet main pipe 6 connected with the exhaust main pipe of the DC air conditioning system and several air inlet branch pipes 5 connected with the air inlet main pipe 6, Each air inlet branch pipe 5 is provided with a number of air outlets to align with the surface of the heat exchanger 30 located in the heat pump box; the air outlet of each air inlet branch pipe 5 is provided with an air outlet grille 7 .
防风罩4安装在热泵箱体上与换热器的侧面相对的进风口以及各个进风支管5的出风口，本实施例的防风罩4安装在热泵箱体的前后侧板上的进风口(与换热器30的侧面相对)上，使各个进风支管5送出的风量不逸出热泵箱体，让各个进风支管5送出的风量和从热泵箱体上与换热器的表面相对的进风口进入热泵箱体的外部空气共同构成空气源热泵3所需的通风量；本实施例的室外空气是从热泵箱体的左右侧板上的进风口(与换热器30的表面相对)进入热泵箱体内。The wind shield 4 is installed on the air inlet opposite to the side of the heat exchanger and the air outlet of each air inlet branch pipe 5 on the heat pump box. The wind shield 4 in this embodiment is installed on the air inlet ( Opposite to the side of the heat exchanger 30), so that the air volume sent by each air inlet branch pipe 5 does not escape the heat pump box, so that the air volume sent by each air inlet branch pipe 5 is the same as that from the heat pump box body and the surface of the heat exchanger. The outside air entering the heat pump box from the air inlet together constitutes the ventilation volume required by the air source heat pump 3; the outdoor air in this embodiment is from the air inlets on the left and right side panels of the heat pump box (opposite to the surface of the heat exchanger 30) into the heat pump box.
排风机构包括安装在空气源热泵3的热泵箱体顶板上开设的排风孔上的排风扇2、对应空气源热泵3的排风孔安装在空气源热泵3的热泵箱体顶板上的排风筒1以及设在排风筒1的顶部的低密度的网格罩(图中未示)，网格罩的网格口径为20mm；排风扇2采用大风量高余压风扇，该排风扇2的风量为18500m3/h～20000m3/h，风压为100Pa～120Pa；排风筒1的高度为0.5米～1.5米且形状呈上小下大的圆锥状，以提高排风速度，或呈直圆柱状(见图5)；还可在排风筒1的顶部向外翻边(见图3和图4)，不仅能减少气流阻力，也能增强直圆筒的强度。The exhaust mechanism includes the exhaust fan 2 installed on the exhaust hole opened on the top plate of the heat pump box of the air source heat pump 3, and the exhaust air corresponding to the exhaust hole of the air source heat pump 3 installed on the top plate of the heat pump box of the air source heat pump 3. Tube 1 and a low-density mesh cover (not shown in the figure) arranged on the top of the exhaust tube 1, the mesh diameter of the mesh cover is 20mm; It is 18500m 3 /h～20000m 3 /h, and the wind pressure is 100Pa～120Pa; the height of the exhaust duct 1 is 0.5m～1.5m and the shape is in the shape of a cone with a small upper part and a large lower part, so as to improve the exhaust speed, or to be straight Cylindrical shape (see Figure 5); it can also be turned outward at the top of the exhaust duct 1 (see Figures 3 and 4), which not only reduces airflow resistance, but also enhances the strength of the straight cylinder.
本发明的直流式空调含有害介质排风中低品位热量的增效系统装置的工作原理是：由直流式空调的排风经排风处理装置处理后经过解耦式进风装置的进风总管6进入进风支管5，并由进风支管5的出风格栅7送出，然后进入空气源热泵3的换热器30。尽管直流式空调的排风量与空气源热泵3的通风量不匹配，通过解耦式进风装置和外部空气补风可以最低阻力满足空气源热泵3正常运行所需的通风量，又稀释了直流式空调的排风中的有害物。防风罩4保证了直流式空调的排风免受机外阵风的干扰，加上空气源热泵3中的排风扇2的吸力，有效地防止直流式空调的排风外逸，提高了空气源热泵3的运行效率。进入空气源热泵3的排风流经表面作了防护处理的换热器30与排风扇2。由于防护处理的换热器30与排风扇2均加大了相应的容量，保证了空气源热泵3的运行效率与输出量，最后由排风筒1以一定的高度或一定的速度排入大气，达到法规上规定的排放要求。The working principle of the direct current air conditioner containing low-grade heat in the exhaust air of the direct current air conditioner of the present invention is as follows: the exhaust air of the direct current air conditioner is processed by the exhaust air treatment device and then passes through the air inlet main pipe of the decoupling air intake device. 6 enters the air inlet branch pipe 5, and is sent out by the outlet grille 7 of the air inlet branch pipe 5, and then enters the heat exchanger 30 of the air source heat pump 3. Although the exhaust air volume of the DC air conditioner does not match the ventilation volume of the air source heat pump 3, the decoupling air intake device and the external air supplementary air can meet the ventilation volume required for the normal operation of the air source heat pump 3 with the lowest resistance, and dilute the Harmful substances in the exhaust air of DC air conditioners. The wind shield 4 ensures that the exhaust air of the DC air conditioner is not disturbed by the gust outside the machine, and the suction of the exhaust fan 2 in the air source heat pump 3 effectively prevents the exhaust air of the DC air conditioner from escaping, improving the air source heat pump 3 operating efficiency. The exhaust air entering the air source heat pump 3 flows through the heat exchanger 30 and the exhaust fan 2 whose surfaces are protected. Since the protective heat exchanger 30 and the exhaust fan 2 have increased corresponding capacity, the operation efficiency and output of the air source heat pump 3 are ensured, and finally the exhaust duct 1 is discharged into the atmosphere at a certain height or a certain speed, Meet the emission requirements stipulated in the regulations.
本发明的直流式空调含有害介质排风中低品位热量的增效系统装置具有以下特点：The direct-current air conditioner of the present invention has the following characteristics:
1、由于直流式空调的排风量与空气源热泵3的通风量不匹配，直流式空调的排风量比空气源热泵3的通风量小些，或者直流式空调排风量有变化，如果为了保证直流式空调的排风量全部吸走而不被阵风干扰常采用风管硬连接，不仅不能满足空气源热泵3的通风量，反而影响空气源热泵3的效率。因此本发明在空气源热泵3的进风口与直流式空调的排风总管之间设置解耦式进风装置，使空气源热泵3的进风口与直流式空调的排风总管之间为非管道硬连接，并在解耦式进风装置的出风口设置防风罩4，不仅保证直流式空调的排风不外逸，且不受机外阵风的干扰，还能通过大气补风以最低阻力满足空气源热泵3正常运行所需的通风量，又能稀释直流式空调的排风中的有害物；1. Since the exhaust air volume of the DC type air conditioner does not match the ventilation volume of the air source heat pump 3, the exhaust air volume of the DC type air conditioner is smaller than the ventilation volume of the air source heat pump 3, or the exhaust air volume of the DC type air conditioner changes, if In order to ensure that the exhaust air volume of the DC air conditioner is completely sucked away without being disturbed by gusts, the hard connection of the air duct is often used, which not only cannot meet the ventilation volume of the air source heat pump 3, but also affects the efficiency of the air source heat pump 3. Therefore, in the present invention, a decoupling air intake device is arranged between the air inlet of the air source heat pump 3 and the exhaust main pipe of the DC air conditioner, so that there is no pipe between the air inlet of the air source heat pump 3 and the exhaust main pipe of the DC air conditioner. It is hard-connected, and a wind shield 4 is installed at the air outlet of the decoupling air inlet device, which not only ensures that the exhaust air of the DC air conditioner does not escape, and is not disturbed by the gust outside the machine, but also meets the requirements of the minimum resistance through the atmospheric supplementary air. The ventilation volume required for the normal operation of the air source heat pump 3 can also dilute the harmful substances in the exhaust air of the DC air conditioner;
2、由于直流式空调的排风中会含有氨、甲醛、酸碱等腐蚀性物质，会腐蚀排风流经空气源热泵3内的部件，如换热器、排风扇、结构件等部件，常用水、酸、碱等液体喷淋来吸收或中和，这样就会降低热量回收效率。本发明针对排风中有害物的特性对换热器30的换热管33与翅片32作相应的防护处理，并相应优化换热器30的结构，以弥补因防护处理而衰减的换热量。本发明对换热器30的外露部位进行了防护处理，即换热管33的外表面和翅片32的外表面采用电泳处理形成防腐层。因为电泳涂层灵活的阳离子环氧聚合物均匀的分布在金属表面，使翅片或开窗间没有喷涂处理会出现的桥接现象。电泳过程确保换热器30的外表面形成厚度为20～30μm的干膜状防腐层。电泳符合ASTM B3359-97标准，达到4B-5B附着等级；耐腐蚀性可通过ASTM G85A2不低于2400小时的盐雾测试；热衰减性能小于2％以内。由于电泳处理采用的是整体浸入的方式，所以换热器30的端板31也进行了整体的电泳处理，具有同等规格的防护能力(见图6a、图6b和图6c)。2. Since the exhaust air of the DC air conditioner will contain corrosive substances such as ammonia, formaldehyde, acid and alkali, it will corrode the components that the exhaust air flows through the air source heat pump 3, such as heat exchangers, exhaust fans, structural parts and other components. , acid, alkali and other liquids are sprayed to absorb or neutralize, which will reduce the heat recovery efficiency. According to the characteristics of harmful substances in the exhaust air, the present invention performs corresponding protection treatment on the heat exchange tubes 33 and fins 32 of the heat exchanger 30, and optimizes the structure of the heat exchanger 30 accordingly, so as to make up for the attenuated heat exchange due to the protection treatment. quantity. In the present invention, the exposed parts of the heat exchanger 30 are protected, that is, the outer surfaces of the heat exchange tubes 33 and the outer surfaces of the fins 32 are treated with electrophoresis to form an anti-corrosion layer. Because the flexible cationic epoxy polymer of the electrophoretic coating is evenly distributed on the metal surface, there is no bridging between fins or fenestrations that would occur with spray treatment. The electrophoresis process ensures that the outer surface of the heat exchanger 30 forms a dry film-like anti-corrosion layer with a thickness of 20-30 μm. Electrophoresis complies with ASTM B3359-97 standard and reaches 4B-5B adhesion level; corrosion resistance can pass ASTM G85A2 salt spray test of no less than 2400 hours; thermal decay performance is less than 2%. Since the electrophoresis treatment adopts the overall immersion method, the end plate 31 of the heat exchanger 30 is also subjected to the overall electrophoresis treatment, and has the same protection capability (see Fig. 6a, Fig. 6b and Fig. 6c).
另外，考虑到换热器30经过电泳处理后会使换热量衰减，为了满足增效系统装置整体性能不降低，对换热器30的结构进行优化：1)把常规的波纹翅片改为波纹开窗式翅片结构；2)把常规的光管结构的换热铜管改为内螺纹结构的换热铜管，以增加换热管的换热面积。In addition, considering that the heat exchange heat of the heat exchanger 30 will be attenuated after the electrophoresis treatment, in order to ensure that the overall performance of the efficiency enhancement system is not reduced, the structure of the heat exchanger 30 is optimized: 1) Change the conventional corrugated fins to Corrugated window fin structure; 2) Change the heat exchange copper tube of the conventional bare tube structure to the heat exchange copper tube of the internal thread structure to increase the heat exchange area of the heat exchange tube.
3、由于直流式空调的排风会含有高致病微生物，虽然直流式空调已经作了无害处理(如经过高效过滤器进行过滤除菌)，但在法规上规定了排放高度(高出屋面的一定高度)或排放速度，而普通的空气源热泵的排风口的高度与出口风速均达不到排放的要求。本发明针对直流式空调的排风高度与出口风速度要求，在空气源热泵3的排风孔上增加排风机构，即在排风扇2的上部增加排风筒1。排风筒1的高度由法规上要求的排风高度确定。排风筒1按需制成直筒型或圆锥型。圆锥型排风筒1的口部大小依据法规上要求的排风速度确定。增加排风筒1后就可以取消排风扇2上的网罩，而在排风筒1的顶部来增加一个低密度的网格风罩(网格口径为20mm)，甚至采用类似形状的塑料网绳来代替，这样整体的风阻将会有所下降；同时由于此排风筒1的直径较大，对高度为0.5米～1.5米的排风筒1来说产生的压降很小，几乎不会产生额外的压损，因此对整机的性能几乎没有影响。3. Since the exhaust air of the DC air conditioner will contain highly pathogenic microorganisms, although the DC air conditioner has been treated harmlessly (such as filtration and sterilization through a high-efficiency filter), the regulations stipulate the discharge height (higher than the roof). A certain height) or discharge speed, while the height of the air outlet and the outlet wind speed of the ordinary air source heat pump cannot meet the discharge requirements. Aiming at the exhaust height and outlet air speed requirements of the DC air conditioner, the present invention adds an exhaust mechanism to the exhaust hole of the air source heat pump 3 , that is, an exhaust duct 1 is added to the upper part of the exhaust fan 2 . The height of the exhaust duct 1 is determined by the exhaust height required by regulations. The exhaust duct 1 can be made into a straight cylinder type or a conical type as required. The size of the mouth of the conical exhaust duct 1 is determined according to the exhaust speed required by the regulations. After adding the exhaust duct 1, the mesh cover on the exhaust fan 2 can be cancelled, and a low-density mesh hood (the mesh diameter is 20mm) can be added on the top of the exhaust duct 1, or even a plastic mesh rope of a similar shape is used. In this way, the overall wind resistance will be reduced; at the same time, due to the large diameter of the exhaust duct 1, the pressure drop generated for the exhaust duct 1 with a height of 0.5 to 1.5 meters is very small, almost no Extra pressure loss is generated, so it has little effect on the performance of the whole machine.
4.由于普通空气源热泵的换热器的换热量、排风扇的风量与风压和空气源热泵是匹配的，任何一个部件的改动或性能降低会影响空气源热泵的运行效率，不能保证直流式空调所需的冷热水量与水温。本发明不仅在空气源热泵3的排风孔上增加排风筒1，还采用大风量高余压的排风扇2，克服了因换热器30的结构或部件改变而导致流经换热器30的风量阻力的增大的问题。4. Since the heat exchange of the heat exchanger of the ordinary air source heat pump and the air volume of the exhaust fan match the air pressure and the air source heat pump, the modification or performance reduction of any part will affect the operation efficiency of the air source heat pump, and the direct current cannot be guaranteed. The amount of hot and cold water and water temperature required by the air conditioner. The present invention not only increases the exhaust duct 1 on the exhaust hole of the air source heat pump 3, but also adopts the exhaust fan 2 with large air volume and high residual pressure, which overcomes the change of the structure or components of the heat exchanger 30 and causes the flow through the heat exchanger 30. The problem of the increase of air volume resistance.
以上实施例仅供说明本发明之用，而非对本发明的限制，有关技术领域的技术人员，在不脱离本发明的精神和范围的情况下，还可以作出各种变换或变型，因此所有等同的技术方案也应该属于本发明的范畴，应由各权利要求所限定。The above embodiments are only for illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical field can also make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalents The technical solution of the invention should also belong to the scope of the present invention and should be defined by the claims.
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