CN211345647U - Direct evaporative cooling ventilation air conditioning unit for subway station - Google Patents

Abstract

The utility model discloses a direct evaporative cooling ventilation and air-conditioning unit for subway stations, which comprises a casing, two side walls corresponding to the casing are respectively provided with an air inlet and an air supply air outlet, and in the casing are sequentially arranged according to the flow direction of the wind. External mufflers, cyclones, bag filters, high-voltage electrostatic and sterilization devices, cold/heat coils, direct evaporative cooling units, water baffles, supply fans, and internal mufflers. The utility model relates to a direct evaporative cooling ventilation and air-conditioning unit for subway stations, which realizes cooling or ventilation in the subway station through direct cooling and cooling combined with cold/heat coils, and has low energy consumption.

Description

A direct evaporative cooling ventilation and air conditioning unit for subway stations

technical field

The utility model belongs to the technical field of air conditioning equipment, and relates to a direct evaporative cooling ventilation and air conditioning unit for subway stations.

Background technique

With the rapid development of the national economy, more and more cities have begun to build subways to ease the traffic pressure brought about by the rapid urban development. The subway stations are basically located underground, so ventilation and cooling is an essential requirement.

The traditional mechanical air supply has large unit size, low unit efficiency and high operating energy consumption. Under the national strategy of energy saving and emission reduction, an efficient and environmentally friendly air conditioning method is urgently needed to ensure the normal operation of the subway.

Utility model content

The purpose of the utility model is to provide a direct evaporative cooling ventilation and air-conditioning unit for subway stations, which realizes cooling or ventilation in subway stations through direct cooling and cooling combined with cold/heat coils, with low energy consumption.

The technical scheme adopted by the utility model is that a direct evaporative cooling ventilation and air-conditioning unit for a subway station comprises a casing, and two side walls corresponding to the casing are respectively provided with an air inlet and an air supply air outlet, and the casing is arranged in accordance with the direction of the wind. The flow direction is provided with external muffler, cyclone dust collector, bag filter, high-voltage electrostatic and sterilization device, cold/hot coil, direct evaporative cooling unit, water baffle, blower and internal muffler.

The utility model is also characterized in that,

The direct evaporative cooling unit includes inclined stainless steel packing, a water distributor is arranged above the inclined stainless steel packing and on the side close to the cold/heat coil, and the water collecting tank is connected to the water distributor through a circulating water pipe.

The water distributor located above the inclined stainless steel filler is provided with a drip nozzle for spraying toward the inclined stainless steel filler, and the water distributor located on the side close to the cold/hot coil is provided with a drip nozzle for spraying toward the inclined stainless steel filler. High pressure micro mist nozzle.

A circulating water pump is also arranged on the circulating water pipe.

A water filter is also provided on the circulating water pipe.

The air inlet is provided with a damper.

The flaps are made of metallic stainless steel filler.

The blower is also electrically connected with a motor through a cable.

The beneficial effects of the present utility model are:

(1) The utility model adopts the direct cooling and cooling combined with the cooling/heating coil to cool down or ventilate the subway station, and the energy consumption is low.

(2) The utility model adopts the three-stage dust removal method of cyclone dust collector, bag dust collector and high-voltage electrostatic precipitator, so that the air quality entering the evaporative cooling filler is greatly improved, and the evaporation efficiency and service life of the filler are improved.

(3) In the utility model, a cold/hot coil is arranged behind the high-voltage electrostatic dust removal and sterilization device and in front of the evaporative cooling unit. Under extremely unfavorable conditions in summer, high-temperature cold water is introduced to meet the cooling demand in the station. When humidifying the station, increase the temperature of the fresh air outside the station to avoid evaporative cooling of the low-temperature air and circulating water on the filler, which will freeze the water and damage the filler.

(4) The three-dimensional water distribution method of dripping on the upper side and spraying on the front side is adopted on the packing of the direct evaporative cooling unit, which makes the water film distribution on the surface of the packing more uniform and fully eliminates the dry spots on the packing.

Description of drawings

Figure 1 is a schematic structural diagram of a direct evaporative cooling ventilation and air-conditioning unit used in a subway station of the present invention.

In the figure, 1. Air inlet, 2. Air valve, 3. Housing, 4. External muffler, 5. Cyclone dust collector, 6. Bag filter, 7. High voltage electrostatic and sterilization device, 8. Cold/hot coil , 9. Circulating water pipe, 10. Circulating water pump, 11. Water filter, 12. Water collecting tank, 13. High pressure micro-mist nozzle, 14. Drip nozzle, 15. Water distributor, 16. Inclined stainless steel packing, 17. Block Water board, 18. Motor, 19. Blower, 20. Internal muffler, 21. Air supply outlet.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

The utility model is a direct evaporative cooling ventilation and air-conditioning unit for subway stations. The casing 3 is provided with an external muffler 4, a cyclone dust collector 5, a bag filter 6, a high-voltage electrostatic and sterilization device 7, a cooling/heating coil 8, a direct evaporative cooling unit, a water baffle 17, A blower 19 and an internal muffler 20.

The direct evaporative cooling unit includes an inclined stainless steel packing 16 , a water distributor 15 is arranged above the inclined stainless steel packing 16 and on the side close to the cooling/heating coil 8 , and the water collecting tank 12 is connected to the water distributor 15 through the circulating water pipe 9 .

The water distributor 15 located above the inclined stainless steel packing 16 is provided with a drip nozzle 14 for spraying towards the inclined stainless steel packing 16, and the water distributor 15 located on the side close to the cooling/heating coil 8 is provided with a drip nozzle 14 facing the inclined stainless steel packing 16. A high-pressure micro-mist nozzle 13 sprayed with stainless steel filler 16.

The circulating water pipe 9 is also provided with a circulating water pump 10 .

A water filter 11 is also provided on the circulating water pipe 9 .

An air valve 2 is arranged in the air inlet 1 .

The water retaining plate 17 is made of metal stainless steel filler.

The blower 19 is also electrically connected with a motor 18 through a cable.

The working principle of the air conditioner unit of the present invention is as follows:

When the air valve 2 is opened, the fresh air outside the station enters the external muffler 4 through the air inlet 1, and the muffled air enters the cyclone dust collector 5, removes the particles in the air, and then enters the bag filter 6 After being further filtered, it enters the high-voltage electrostatic dust removal and sterilization device 7 to be filtered and sterilized, and clean air is sent out. It is sent to the water distributor 15, sprayed to the inclined stainless steel filler 16 through the drip nozzle 14 and the high-pressure micro-mist nozzle 13 to form a water film, and the clean air enters the direct evaporative cooling unit, and is attached to the inclined stainless steel. The water film on the filler 16 performs heat and moisture exchange, so that the primary air is cooled and humidified by isoenthalpy, and the air cooled and humidified by isoenthalpy passes through the filler type water baffle 17 to block the excess moisture in the air, and passes through the blower 19 and After the muffler 20 is muffled, it is sent into the station through the air supply port 21 .

The air-conditioning unit of the utility model is divided into three operating conditions, which are:

(1) Summer

In summer, the temperature outside the station is high, and more heat is transferred to the station, and the temperature inside the station rises. By passing high-temperature cold water into the cooling/coil 8, the clean air sterilized by the high-voltage electrostatic dust removal and sterilization device 7 is subjected to a certain isohumidity. After cooling, the cooled air enters the direct evaporative cooling unit, and exchanges heat and moisture with the water film attached to the filler, so that the air is humidified and cooled by isenthalpy. The maximum temperature drop is achieved to meet the temperature requirements in the station.

(2) Transition season

In the transitional season, the temperature outside the station is not high, and only a certain amount of ventilation is required in the station to meet the requirements of the station. It is not necessary to turn on the cooling/coil 8, just turn on the blower. 19 can be sent indoors to meet the indoor requirements for fresh air.

(3) Winter

The environment in the station is dry, and a certain amount of humidification is required. By passing high-temperature hot water into the cooling/coil 8, the clean air that has been sterilized by the high-voltage electrostatic dust removal and sterilization device 7 is preheated, and the preheated air is re-entered for direct evaporation. In the cooling unit, moisture exchange is performed with the water film attached to the filler, so that the air is humidified to meet the temperature requirements in the station.

Claims (8)

1. A direct evaporative cooling ventilation and air-conditioning unit for subway stations, characterized in that it comprises a casing (3), and the corresponding two side walls of the casing (3) are respectively provided with an air inlet (1) and an air supply The tuyere (21) is provided with an external muffler (4), a cyclone dust collector (5), a bag filter (6), a high-voltage electrostatic and sterilization device (7), A cooling/heating coil (8), a direct evaporative cooling unit, a water baffle (17), a blower (19) and an internal muffler (20). 2. The air-conditioning unit according to claim 1, wherein the direct evaporative cooling unit comprises an inclined stainless steel packing (16) above the inclined stainless steel packing (16) and close to the cooling/heating coil (8). ) is provided with a water distributor (15) on one side, a water collecting tank (12) is arranged below the inclined stainless steel packing (16), and the water collecting tank (12) is connected to the water distributor through a circulating water pipe (9). (15). 3. The air-conditioning unit according to claim 2, wherein the water distributor (15) above the inclined stainless steel packing (16) is provided with a drip nozzle (15) that sprays toward the inclined stainless steel packing (16). 14), the water distributor (15) located on the side close to the cooling/heating coil (8) is provided with a high-pressure micro-mist nozzle (13) for spraying toward the inclined stainless steel packing (16). 4. The air-conditioning unit according to claim 2, characterized in that, a circulating water pump (10) is further provided on the circulating water pipe (9). 5. The air-conditioning unit according to claim 2, characterized in that, a water filter (11) is further provided on the circulating water pipe (9). 6. The air-conditioning unit according to claim 1 or 2, characterized in that, a damper (2) is provided in the air inlet (1). 7. The air-conditioning unit according to claim 1 or 2, wherein the water blocking plate (17) is made of metal stainless steel filler. 8. The air conditioning unit according to claim 1 or 2, characterized in that, the blower (19) is further electrically connected with a motor (18) through a cable.

Images