CN104006469A - Evaporative cooling and mechanical refrigeration combined variable air duct energy-saving air conditioning unit - Google Patents
Evaporative cooling and mechanical refrigeration combined variable air duct energy-saving air conditioning unit Download PDFInfo
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- 238000001816 cooling Methods 0.000 title claims abstract description 28
- 238000004378 air conditioning Methods 0.000 title claims abstract description 25
- 238000005057 refrigeration Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 238000012856 packing Methods 0.000 claims abstract description 36
- 239000000945 filler Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000009290 primary effect Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
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Abstract
本发明公开的蒸发冷却与机械制冷联合的变风道节能空调机组，包括有机组壳体，机组壳体内分隔成上下布置的两个风道；上风道内：机组壳体相对两侧壁分别设置有上层进风口、上层送风口，上层进风口与上层送风口之间按新风进入后流动方向依次设置有进风初效过滤器a、高温冷水表冷器、蒸发器、上下可调节风阀、直接蒸发冷却器及送风风机；下层风道内：机组壳体相对两侧壁分别设置有下层进风口、下层排风口，下层进风口、下层送风口之间按新风进入后流动方向依次设置有进风初效过滤器b、填料式直接蒸发冷却器、冷凝器、压缩机及排风风机。本发明变风道节能空调机组能根据不同的室外气象条件，选择性的开启不同功能段、风机和风道阀门，节省了电能。
The variable air duct energy-saving air conditioning unit combined with evaporative cooling and mechanical refrigeration disclosed by the present invention includes an organic unit casing, and the unit casing is divided into two air ducts arranged up and down; in the upper air duct: the opposite side walls of the unit housing are respectively provided with The upper air inlet, the upper air supply port, and the upper air inlet and the upper air supply port are arranged in sequence according to the flow direction of the fresh air after entering the air inlet primary filter a, high-temperature cold water surface cooler, evaporator, up and down adjustable air valve, direct Evaporative cooler and air supply fan; in the lower air duct: the opposite side walls of the unit housing are respectively provided with lower air inlets and lower air exhaust outlets, and between the lower air inlets and the lower air supply outlets are arranged in sequence according to the flow direction of fresh air after entering. Air primary effect filter b, packing type direct evaporative cooler, condenser, compressor and exhaust fan. The variable air duct energy-saving air conditioner unit of the present invention can selectively open different functional sections, fans and air duct valves according to different outdoor meteorological conditions, thereby saving electric energy.
Description
技术领域technical field
本发明属于空调设备技术领域，具体涉及一种蒸发冷却与机械制冷联合的变风道节能空调机组。The invention belongs to the technical field of air-conditioning equipment, and in particular relates to an energy-saving air-conditioning unit with variable air duct combined with evaporative cooling and mechanical refrigeration.
技术背景technical background
随着我国经济的发展和社会的进步，在节能减排这样的国家大战略的背景下，人们迫切需要一种能有效对室内空气实现净化、降温、高效运行，同时又能有效降低系统耗电量的新型节能空调装置来提升人们对工作和生活环境的需求。With the development of our country's economy and social progress, under the background of the national grand strategy of energy conservation and emission reduction, people urgently need a system that can effectively purify, cool down, and operate efficiently in indoor air, and at the same time effectively reduce system power consumption. A large number of new energy-saving air-conditioning devices to improve people's demand for working and living environments.
传统的单纯机械空调机组无法按照室外气象条件决定空调机组需要开启的功能段，也就无法实现在不同季节对空气进行不同的调节，而且传统的单纯机械空调机组能耗都比较高。Traditional purely mechanical air conditioners cannot determine the functional sections that need to be turned on according to the outdoor weather conditions, and it is impossible to adjust the air differently in different seasons. Moreover, traditional purely mechanical air conditioners consume relatively high energy consumption.
发明内容Contents of the invention
本发明的目的在于提出了一种蒸发冷却与机械制冷联合的变风道节能空调机组，实现了根据不同的室外气象条件，选择性的开启不同功能段、风机和风道阀门，最大可能的使用蒸发冷却带来的免费制冷，节省了电能的消耗。The purpose of the present invention is to propose a variable air duct energy-saving air conditioning unit combined with evaporative cooling and mechanical refrigeration, which realizes the selective opening of different functional sections, fans and air duct valves according to different outdoor meteorological conditions, and maximizes the use of evaporation. The free refrigeration brought by cooling saves the consumption of electric energy.
本发明所采用的技术方案是，蒸发冷却与机械制冷联合的变风道节能空调机组，包括有机组壳体，机组壳体内分隔成上下布置的两个风道；The technical solution adopted in the present invention is that the variable air duct energy-saving air conditioning unit combined with evaporative cooling and mechanical refrigeration includes an organic unit casing, and the unit casing is divided into two air ducts arranged up and down;
上风道内：机组壳体相对两侧壁分别设置有上层进风口、上层送风口，上层进风口与上层送风口之间按新风进入后流动方向依次设置有进风初效过滤器a、高温冷水表冷器、蒸发器、上下可调节风阀、直接蒸发冷却器及送风风机；In the upper air duct: the opposite side walls of the unit shell are respectively provided with an upper air inlet and an upper air supply port, and between the upper air inlet and the upper air supply port are arranged in sequence according to the flow direction of the fresh air after entering the air inlet primary filter a and a high-temperature cold water meter Cooler, evaporator, up and down adjustable air valve, direct evaporative cooler and air supply fan;
下层风道内：机组壳体相对两侧壁分别设置有下层进风口、下层排风口，下层进风口、下层排风口之间按新风进入后流动方向依次设置有进风初效过滤器b、填料式直接蒸发冷却器、冷凝器、压缩机及排风风机。In the lower air duct: the opposite side walls of the unit housing are respectively provided with lower air inlets and lower air exhaust outlets, and between the lower air inlets and the lower air exhaust outlets are arranged in sequence according to the flow direction of fresh air after entering the air. Air inlet primary filter b, Packed direct evaporative cooler, condenser, compressor and exhaust fan.
本发明的特点还在于：The present invention is also characterized in that:
高温冷水表冷器与蒸发器之间形成回风风道，回风风道对应的机组壳体侧壁上设置有回风口。A return air duct is formed between the high-temperature cold water surface cooler and the evaporator, and a return air port is provided on the side wall of the unit casing corresponding to the return air duct.
上下可调节风阀由上、下布置的上风阀和下风阀组成，下风阀紧邻直接蒸发冷却器设置且与直接蒸发冷却器等高。The up and down adjustable air valve is composed of an upper air valve and a lower air valve arranged up and down, and the lower air valve is arranged next to the direct evaporative cooler and is at the same height as the direct evaporative cooler.
直接蒸发冷却器，包括有第一填料，第一填料的上方设置有第一布水器，第一填料的下方设置有第一循环水箱，第一循环水箱内设置有第一水过滤器，第一水过滤器通过第一供水管与第一布水器连接；第一供水管上设置有第一循环水泵。The direct evaporative cooler includes the first packing, the first water distributor is arranged above the first packing, the first circulating water tank is arranged under the first packing, the first water filter is arranged in the first circulating water tank, and the first A water filter is connected to the first water distributor through the first water supply pipe; the first water supply pipe is provided with a first circulating water pump.
第一填料采用的是纸质、金属、多孔陶瓷或PVC填料中的一种；第一布水器采用的是喷淋支管或喷嘴。The first filler is one of paper, metal, porous ceramic or PVC filler; the first water distributor is a spray branch pipe or nozzle.
填料式直接蒸发冷却器，包括有第二填料，第二填料的上方设置有第二布水器，第二填料的下方设置有第二循环水箱，第二循环水箱内设置有第二水过滤器；Packing type direct evaporative cooler, including the second packing, the second water distributor is arranged above the second packing, the second circulating water tank is arranged under the second packing, and the second water filter is arranged in the second circulating water tank ;
第二水过滤器通过第二供水管与高温冷水表冷器的进水口连接，高温冷水表冷器的出水口通过第三供水管与第二布水器连接。The second water filter is connected to the water inlet of the high-temperature cold water surface cooler through the second water supply pipe, and the water outlet of the high-temperature cold water surface cooler is connected to the second water distributor through the third water supply pipe.
第二循环水箱内设置有补水阀；第二供水管上设置有第二循环水泵。A replenishment valve is arranged in the second circulating water tank; a second circulating water pump is arranged on the second water supply pipe.
第二填料采用的是纸质、金属、多孔陶瓷或PVC填料中的一种；第二布水器采用的是喷淋支管或喷嘴。The second packing adopts one of paper, metal, porous ceramic or PVC packing; the second water distributor adopts spray branch pipes or nozzles.
压缩机通过铜管依次与冷凝器、节流阀、蒸发器连接形成闭合回路，构成机械制冷系统。The compressor is sequentially connected with the condenser, throttle valve and evaporator through copper tubes to form a closed circuit, forming a mechanical refrigeration system.
本发明的有益效果在于：The beneficial effects of the present invention are:
(1)本发明的变风道节能空调机组是由蒸发冷却与机械制冷两种技术联合而成，其中下层的填料式直接蒸发冷却器可为机械制冷系统的冷凝器提供低于室外空气温度的冷风，由于进入冷凝器的作为冷却介质的空气温度下降，相应地冷凝温度也下降，输入功率少，制冷量增加，而且填料式直接蒸发冷却器基本上不消耗电能，因此使机组的制冷能效比COP有较大提高。(1) The variable air duct energy-saving air-conditioning unit of the present invention is formed by the combination of two technologies of evaporative cooling and mechanical refrigeration, wherein the packing type direct evaporative cooler in the lower layer can provide cooling temperature lower than the outdoor air temperature for the condenser of the mechanical refrigeration system. Cold air, because the temperature of the air entering the condenser as the cooling medium drops, the condensing temperature also drops correspondingly, the input power is small, the cooling capacity increases, and the packing type direct evaporative cooler basically does not consume electric energy, so the cooling energy efficiency ratio of the unit is improved. COP has been greatly improved.
(2)在本发明的变风道节能空调机组内，由下层风道内的填料式直接蒸发冷却器所制取的冷水流入上层风道的高温冷水表冷器，为空调机组送风预冷，减少了机械制冷系统的制冷量，节约了能耗。(2) In the energy-saving air-conditioning unit with variable duct of the present invention, the cold water produced by the packing type direct evaporative cooler in the lower air duct flows into the high-temperature cold water surface cooler of the upper air duct to pre-cool the air supply of the air-conditioning unit, The cooling capacity of the mechanical refrigeration system is reduced and energy consumption is saved.
(3)本发明的变风道节能空调机组在使用时，在不同季节可根据室外气象条件使用不同的运行模式，选择性开启相关功能段、风机、风道阀门；在过渡季节，充分利用天然冷量，来消除室内的负荷。(3) When the variable air duct energy-saving air conditioner unit of the present invention is in use, different operating modes can be used in different seasons according to outdoor weather conditions, and relevant functional sections, fans, and air duct valves can be selectively opened; Cooling capacity, to eliminate the load in the room.
(4)本发明的变风道节能空调机组在冬季使用时，机械制冷系统通过四通阀切换模式转换为热泵系统，有效提高了设备的使用率，节省供暖设备的投资。(4) When the variable duct energy-saving air-conditioning unit of the present invention is used in winter, the mechanical refrigeration system is converted into a heat pump system through the switching mode of the four-way valve, which effectively improves the utilization rate of the equipment and saves investment in heating equipment.
(5)本发明的变风道节能空调机组中，变风道技术最大化减少空气流动阻力，减小风机的能耗。(5) In the variable air duct energy-saving air conditioning unit of the present invention, the variable air duct technology maximizes the reduction of air flow resistance and reduces the energy consumption of the fan.
附图说明Description of drawings
图1是本发明变风道节能空调机组的结构示意图。Fig. 1 is a structural schematic diagram of a variable air duct energy-saving air-conditioning unit of the present invention.
图中，1.进风初效过滤器a，2.高温冷水表冷器，3.回风口，4.蒸发器，5.上下可调节风阀，6.第一填料，7.送风风机，8.上层送风口，9.下层排风口，10.排风风机，11.压缩机，12.冷凝器，13.节流阀，14.第二循环水泵，15.第二填料，16.第二循环水箱，17.下层进风口，18.上层进风口，19.进风初效过滤器b，20.第一布水器，21.第一循环水箱，22.第二布水器。In the figure, 1. Air inlet primary filter a, 2. High temperature cold water surface cooler, 3. Return air outlet, 4. Evaporator, 5. Up and down adjustable air valve, 6. First packing, 7. Air supply fan , 8. Upper air supply port, 9. Lower air exhaust port, 10. Exhaust fan, 11. Compressor, 12. Condenser, 13. Throttle valve, 14. Second circulating water pump, 15. Second packing, 16 .Second circulating water tank, 17. Lower air inlet, 18. Upper air inlet, 19. Air inlet primary filter b, 20. First water distributor, 21. First circulating water tank, 22. Second water distributor .
具体实施方式Detailed ways
下面结合附图和具体实施方式对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
本发明蒸发冷却与机械制冷联合的变风道节能空调机组，其结构如图1所示，包括有机组壳体，机组壳体内分隔成上下布置的两个风道；上层风道内：机组壳体相对两侧壁分别设置有上层进风口18、上层送风口8，上层进风口18、上层送风口8之间按新风进入后流动方向依次设置有进风初效过滤器a1、高温冷水表冷器2、蒸发器4、上下可调节风阀5、直接蒸发冷却器、送风风机7，高温冷水表冷器2与蒸发器4之间形成回风风道，回风风道对应的机组壳体侧壁上设置有回风口3；下风道内：机组壳体相对两侧壁分别设置有下层进风口17、下层排风口9，下层进风口17、下层排风口9之间按新风进入后流动方向依次设置有进风初效过滤器b19、填料式直接蒸发冷却器、冷凝器12、压缩机11及排风风机10。The energy-saving air-conditioning unit with variable duct combined with evaporative cooling and mechanical refrigeration according to the present invention has a structure as shown in Figure 1, which includes an organic unit casing, and the unit casing is divided into two air ducts arranged up and down; in the upper air duct: the unit housing The upper-layer air inlet 18 and the upper-layer air supply port 8 are respectively arranged on the opposite side walls, and the upper-layer air inlet 18 and the upper-layer air supply outlet 8 are arranged in sequence according to the flow direction of the fresh air after entering the air inlet primary filter a1 and high-temperature cold water surface cooler 2. Evaporator 4, up and down adjustable air valve 5, direct evaporative cooler, air supply fan 7, a return air duct is formed between the high-temperature cold water surface cooler 2 and the evaporator 4, and the unit shell corresponding to the return air duct There is a return air outlet 3 on the side wall; in the lower air duct: the lower air inlet 17 and the lower air outlet 9 are respectively arranged on the opposite side walls of the unit shell, and the air flow between the lower air inlet 17 and the lower air outlet 9 is based on the fresh air entering The direction is provided with an inlet primary filter b19, a packing type direct evaporative cooler, a condenser 12, a compressor 11 and an exhaust fan 10 in sequence.
上下可调节风阀5由上、下布置的上风阀和下风阀组成，下风阀紧邻直接蒸发冷却器设置且与直接蒸发冷却器等高。。采用这一结构的目的在于：保证下风阀打开，上风阀关闭时空气全由直接蒸发冷却器通过；上风阀设置在下风阀之上，以保证上风阀打开，下风阀关闭时空气全由上风阀通过。The up and down adjustable air valve 5 is composed of an upper air valve and a lower air valve arranged up and down, and the lower air valve is arranged next to the direct evaporative cooler and is at the same height as the direct evaporative cooler. . The purpose of adopting this structure is to ensure that the lower air valve is opened, and when the upper air valve is closed, all the air passes through the direct evaporative cooler; the upper air valve is set above the lower air valve to ensure that the upper air valve is opened, and when the lower air valve is closed, all the air passes through the upper air valve pass.
直接蒸发冷却器，包括有第一填料6，第一填料6的上方设置有第一布水器20，第一填料6的下方设置有第一循环水箱21，第一循环水箱21内设置有第一水过滤器，第一水过滤器通过第一供水管与第一布水器20连接，第一供水管上设置有第一循环水泵。The direct evaporative cooler includes the first packing 6, the first water distributor 20 is arranged above the first packing 6, the first circulating water tank 21 is arranged under the first packing 6, and the first circulating water tank 21 is provided with the first A water filter, the first water filter is connected to the first water distributor 20 through the first water supply pipe, and the first water supply pipe is provided with a first circulating water pump.
填料式直接蒸发冷却器，包括有填料15，填料15的上方设置有第二布水器22，填料15的下方设置有第二循环水箱16，第二循环水箱16内设置有第二水过滤器，第二水过滤器通过第二供水管与高温冷水表冷器2的进水口连接，高温冷水表冷器2的出水口通过第三供水管与第二布水器22连接。第二循环水箱16内设置有补水阀；第二供水管上设置有第二循环水泵14。Packing type direct evaporative cooler, including packing 15, a second water distributor 22 is arranged above the packing 15, a second circulating water tank 16 is arranged under the packing 15, and a second water filter is arranged in the second circulating water tank 16 , the second water filter is connected to the water inlet of the high-temperature cold water surface cooler 2 through the second water supply pipe, and the water outlet of the high-temperature cold water surface cooler 2 is connected to the second water distributor 22 through the third water supply pipe. The second circulating water tank 16 is provided with a replenishment valve; the second water supply pipe is provided with a second circulating water pump 14 .
压缩机11通过铜管依次与冷凝器12、节流阀13、蒸发器4连接形成闭合回路，构成机械制冷系统。The compressor 11 is sequentially connected with the condenser 12, the throttle valve 13, and the evaporator 4 through copper pipes to form a closed loop, constituting a mechanical refrigeration system.
其中，直接蒸发冷却器内的第一填料6和填料式直接蒸发冷却器内的第二填料15和均采用纸质、金属、多孔陶瓷、PVC填料中的一种；第一布水器20和第二布水器22除采用喷淋支管外，还可以采用喷嘴。Wherein, the first packing 6 in the direct evaporative cooler and the second packing 15 in the packing type direct evaporative cooler all adopt a kind of in papery, metal, porous ceramics, PVC packing; The first water distributor 20 and The second water distributor 22 can also adopt nozzles except adopting spray branch pipes.
本发明蒸发冷却与机械制冷联合的变风道节能空调机组的工作过程如下：The working process of the variable air channel energy-saving air-conditioning unit combined with evaporative cooling and mechanical refrigeration of the present invention is as follows:
(1)冷却盘管与机械制冷联合模式：(1) Combined mode of cooling coil and mechanical refrigeration:
新风在排风风机10的作用下先从下层进风口17进入下层风道内，先经进风初效过滤器b19过滤，然后在填料式直接蒸发冷却器处，经等焓加湿降温过程产生冷风，同时填料式直接蒸发冷却器会产生冷水，这些冷水经第二循环水箱16收集后，由第二供水管流入高温冷水表冷器2内，对从上层进风口18进入上层风道内的新风进行预冷，上层风道内的新风在高温冷水表冷器2处经等湿降温后进入蒸发器4，在蒸发器4处经换热得到进一步的冷却，最后经上下可调节风阀5及上层送风口8送入室内；在这一过程中开启上下可调节风阀5的上风阀，关闭下风阀，直接蒸发冷却器不运行。Under the action of the exhaust fan 10, the fresh air first enters the lower air duct from the lower air inlet 17, and is first filtered through the inlet air primary filter b19, and then at the packing type direct evaporative cooler, cold air is generated through the isenthalpic humidification and cooling process, Simultaneously, the packing type direct evaporative cooler will produce cold water. After the cold water is collected by the second circulating water tank 16, it will flow into the high-temperature cold water surface cooler 2 from the second water supply pipe, and the fresh air entering the upper air duct from the upper air inlet 18 will be pre-treated. Cold, the fresh air in the upper air duct enters the evaporator 4 after being cooled by isohumidity at the high-temperature cold water surface cooler 2, and is further cooled by heat exchange at the evaporator 4, and finally passes through the up and down adjustable air valve 5 and the upper air supply port 8 into the room; in this process, open the upper air valve of the up and down adjustable air valve 5, close the lower air valve, and the direct evaporative cooler does not operate.
(2)冷却盘管与直接蒸发冷却联合模式：(2) Combined mode of cooling coil and direct evaporative cooling:
新风在排风风机10的作用下从下层进风口17进入下层风道内，先经进风初效过滤器b19过滤后，在填料式直接蒸发冷却器处进行等焓加湿降温，填料式直接蒸发冷却器所产生的冷水温度将在湿球温度和露点温度之间，这些冷水经第二循环水箱16收集后，由第二供水管流入高温冷水表冷器2内，对从上层进风口18进入上层风道内的新风进行预冷，上层风道内的新风在高温冷水表冷器2处经等湿降温冷却，然后再流经上下可调节风阀5，之后进入直接蒸发冷却器内进行等焓加湿降温，最后由上层送风口8送入室内；这一模式下机械制冷系统不开启。Under the action of the exhaust fan 10, the fresh air enters the lower air duct from the lower air inlet 17, and is first filtered by the inlet air primary filter b19. The temperature of the cold water produced by the device will be between the wet bulb temperature and the dew point temperature. After the cold water is collected by the second circulating water tank 16, it will flow into the high-temperature cold water surface cooler 2 through the second water supply pipe, and enter the upper layer from the upper air inlet 18. The fresh air in the air duct is pre-cooled, and the fresh air in the upper air duct is cooled by iso-humidity cooling at the high-temperature cold water surface cooler 2, then flows through the upper and lower adjustable air valves 5, and then enters the direct evaporative cooler for isenthalpy humidification and cooling , and finally sent into the room by the upper air outlet 8; in this mode, the mechanical refrigeration system is not turned on.
(3)直接蒸发冷却模式：(3) Direct evaporative cooling mode:
新风在送风风机7的作用下从上层进风口18进入上层风道内，先经进风初效过滤器a1过滤后，然后经上下可调节风阀5进入直接蒸发冷却器内进行等焓加湿降温，最后由上层送风口8送入室内；在这一过程中，开启上下可调节风阀5的下风阀，关闭上风阀，这一模式下直接蒸发冷却器和机械制冷系统均不开启。Under the action of the air supply fan 7, the fresh air enters the upper air duct from the upper air inlet 18, is first filtered by the air inlet primary filter a1, and then enters the direct evaporative cooler through the upper and lower adjustable air valve 5 for equal enthalpy humidification and cooling , and finally sent into the room from the upper air outlet 8; in this process, open the lower air valve of the up and down adjustable air valve 5, and close the upper air valve. In this mode, neither the direct evaporative cooler nor the mechanical refrigeration system is opened.
(4)通风模式：(4) Ventilation mode:
新风在送风风机7的作用下从上层进风口18进入上层风道内，先经进风初效过滤器a1过滤后，经上层送风口8直接送入室内；在这一过程中，开起上下可调节风阀5的下风阀，关闭上风阀，直接蒸发冷却器、填料式直接蒸发冷却器和机械制冷系统均不开启。The fresh air enters the upper air duct from the upper air inlet 18 under the action of the air supply fan 7, and is first filtered by the air inlet primary effect filter a1, and then directly sent into the room through the upper air supply port 8; The downwind valve of the air valve 5 can be adjusted, the upwind valve is closed, and the direct evaporative cooler, packing type direct evaporative cooler and mechanical refrigeration system are not opened.
(5)冬季供热模式：(5) Winter heating mode:
新风在送风风机7的作用下从上层进风口18进入上层风道内，先经进风初效过滤器a1过滤后，由蒸发器4(冬季为冷凝器12)等湿加热，然后流经上下可调节风阀5，进入直接蒸发冷却器，经等焓加湿后送入室内；在这一过程中，开启上下可调节风阀5的下风阀，关闭上风阀，机械制冷系统中的四通阀切换成冬季模式，使机械制冷系统变为空气源热泵系统。The fresh air enters the upper air duct from the upper air inlet 18 under the action of the air supply fan 7, and is first filtered by the air inlet primary effect filter a1, then wet-heated by the evaporator 4 (condenser 12 in winter), and then flows through the upper and lower air ducts. The adjustable air valve 5 enters the direct evaporative cooler, and is sent to the room after isenthalpic humidification; Switching to winter mode turns the mechanical refrigeration system into an air source heat pump system.
本发明蒸发冷却与机械制冷联合的变风道节能空调机组，运用变风道技术按照室外气象条件决定空调机组需要开启的功能段，运行模式有：冷却盘管与机械制冷联合模式、冷却盘管与直接蒸发冷却联合模式、直接蒸发冷却模式、通风模式、冬季供热模式，这样大大减少机组能耗，提高了机组使用率。The variable air duct energy-saving air conditioning unit combined with evaporative cooling and mechanical refrigeration of the present invention uses the variable air duct technology to determine the functional sections of the air conditioning unit that need to be opened according to the outdoor meteorological conditions. The operating modes include: cooling coil and mechanical refrigeration combined mode, cooling coil Combined with direct evaporative cooling mode, direct evaporative cooling mode, ventilation mode, and winter heating mode, this greatly reduces the energy consumption of the unit and improves the utilization rate of the unit.
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