CN202769848U - High pressure air jet and tube type indirect evaporative cooler composite type evaporative cooling air conditioning unit - Google Patents

Abstract

The composite evaporative cooling air-conditioning unit disclosed by the utility model has an air inlet and an air supply port on the opposite side walls of the unit casing, and louvers are arranged at the air inlet. In the direction of air entry, there are primary filter, high-pressure air jet standpipe, tubular indirect evaporative cooler and blower in sequence. Multiple high-pressure air jet nozzles are arranged on the high-pressure air jet standpipe, and the high-pressure air jet standpipe is connected with general compressed air pipes. The side wall of the unit shell facing the tubular indirect evaporative cooler is provided with a secondary air return port, and the top of the tubular indirect evaporative cooler is provided with a secondary air exhaust port on the unit shell wall. The utility model enables the high-pressure jet to pre-cool and dehumidify the air, and then conduct iso-humidity cooling through evaporative cooling to generate low-temperature, low-humidity, and low-enthalpy air to supply the air compressor, fully exerting the leading role of evaporative cooling, and has the advantages of energy saving, high efficiency, The advantages of purification and environmental protection.

Description

High-pressure jet and tubular indirect evaporative cooler composite evaporative cooling air conditioning unit

technical field

The utility model belongs to the technical field of air-conditioning equipment, and relates to an evaporative cooling air-conditioning unit, in particular to a two-stage composite evaporative cooling air-conditioning unit composed of a high-pressure jet and a tubular indirect evaporative cooler.

Background technique

At present, as an important form of energy generation, air compressors are widely used in industrial occasions such as machinery, metallurgy, electronics, textiles, mining, and chemical industry. This compressed air contains a lot of energy, but it is often wasted due to insufficient utilization. On the other hand, according to relevant tests, it can be known that for an air compressor, the lower the temperature and humidity of the air at the inlet, the greater the air output of the air compressor. Therefore, there is an urgent need for a large-volume air-conditioning device that can cool, purify, dehumidify, and operate efficiently while effectively reducing system power consumption to supply air to the air inlet of the air compressor and improve air quality. Compressor capacity and efficiency.

Contents of the invention

The purpose of this utility model is to provide a high-pressure air jet and tube-type indirect evaporative cooler composite evaporative cooling air conditioning unit, which realizes the complementary functions of high-pressure air jet and tube-type indirect evaporative cooler, and can not only provide low temperature and low humidity to the air compressor , low enthalpy, clean inlet air, and give full play to the leading role of evaporative cooling.

The technical scheme adopted by the utility model is that the high-pressure jet and the tubular indirect evaporative cooler are combined type evaporative cooling air-conditioning unit, and the opposite side walls of the unit shell are respectively provided with an air inlet and an air supply port, and the air inlet is provided with Louvres, in the unit shell, there are primary filter, high-pressure air jet riser, tubular indirect evaporative cooler and blower arranged in sequence according to the direction of air intake. Jet nozzles, high-pressure jet standpipes are connected to general compressed air pipes, the side wall of the unit casing corresponding to the tubular indirect evaporative cooler is provided with a secondary air return port, and the top of the tubular indirect evaporative cooler corresponds to the unit casing The body wall is provided with a secondary air exhaust port.

The utility model is also characterized in that,

The high-pressure jet riser is connected with the air compressor.

The structure of the tubular indirect evaporative cooler is: a tubular heat exchanger composed of multiple heat exchange tubes arranged in parallel, the upper part of the tubular heat exchanger is provided with dripping nozzles, and the lower part of the tubular heat exchanger is provided with A water collecting tank, a water filter is arranged in the water collecting tank, the water filter in the water collecting tank communicates with the dripping nozzle through a low-pressure water supply pipe, and a circulating water pump is also arranged on the low-pressure water supply pipe.

The outer surface of the heat exchange tube of the tubular heat exchanger is provided with corrugations, and the inner surface of the heat exchange tube is provided with a metal helical coil.

Compared with the air-conditioning unit of the prior art, the air-conditioning unit of the utility model has the following characteristics:

1) The coarse-effect filter in the unit can perform coarse-effect filtration on the fresh air to protect the high-efficiency filter at the inlet of the air compressor, and the coarse-effect filter is easy to maintain and replace, reducing operating costs.

2) Combining the high-pressure air jet with the tubular indirect evaporative cooler, the high-pressure air jet can pre-cool and dehumidify the outdoor fresh air, and the indirect evaporative cooler can further cool the air and increase the air output of the air compressor.

3) The heat exchange tube of the tubular indirect evaporative cooler adopts a corrugated outer surface and a metal spiral coil structure on the inner wall, which increases the contact area and contact time between the water and the heat exchanger, and improves the heat transfer of the evaporative cooler. quality effect.

4) Effective use of general-purpose compressed air in the production process of textile, industrial and mining enterprises as a power source, low energy consumption, greatly saving energy and reducing cooling costs.

Description of drawings

Fig. 1 is a structural schematic diagram of the composite evaporative cooling air conditioner unit of the present invention.

In the figure, 1. Louver, 2. Air inlet, 3. Coarse effect filter, 4. High-pressure jet riser, 5. High-pressure jet nozzle, 6. Water collection tank, 7. Water filter, 8. Circulating water pump, 9. Low-pressure water supply pipe, 10. Drip nozzle, 11. Secondary return air outlet, 12. Secondary air exhaust outlet, 13. Blower fan, 14. Air supply outlet.

Detailed ways

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

The composite evaporative cooling air-conditioning unit of the utility model with high-pressure jet and tubular indirect evaporative cooler has a structure as shown in Figure 1, including an organic unit casing, and air inlets 2 are respectively arranged on the two opposite side walls of the unit casing. And the air supply port 14, the air inlet 2 is provided with louvers 1, and the primary effect filter 3, the high-pressure air jet standpipe 4, the tubular indirect evaporative cooler and the blower 13 are arranged in sequence in the direction of air entry in the unit shell, and the high-pressure air jet A plurality of high-pressure air jet nozzles 5 are arranged on the standpipe 4 along the air intake direction, and the high-pressure air jet standpipe 4 is connected with a general compressed air pipeline. Secondary air return air outlet 11, secondary air exhaust outlet 12 is arranged on the unit casing wall corresponding to the top of the tubular indirect evaporative cooler.

The high-pressure jet riser 4 can also be communicated with the air compressor.

The structure of the tubular indirect evaporative cooler is: a tubular heat exchanger consisting of multiple heat exchange tubes arranged in parallel, the upper part of the tubular heat exchanger is provided with a drip nozzle 10, and the lower part of the tubular heat exchanger is provided A water collecting tank 6 is arranged, and a water filter 7 is arranged in the water collecting tank 6, and the water filter 7 in the water collecting tank 6 communicates with the dripping nozzle 10 through a low-pressure water supply pipe 9, and a circulating water pump 8 is also arranged on the low-pressure water supply pipe 9.

Among them, the general compressed air pipeline, the high-pressure air jet riser 4 and the high-pressure air jet nozzle 5 constitute the first stage cooling and dehumidification section of the air conditioning system, and the high-pressure air jet riser 4 sends the general compressed air or the air compressed by the air compressor into the air conditioning unit Inside, it is mixed with outdoor fresh air for heat and humidity exchange, and the air is pre-cooled and dehumidified. The water collecting tank 6, the circulating water pump 8, the low-pressure water supply pipe 9, the dripping nozzle 10 and a plurality of heat exchange tubes placed in parallel constitute the second-stage indirect evaporative cooling section.

The utility model of high-pressure air jet and tube-type indirect evaporative cooler composite evaporative cooling air-conditioning unit uses high-pressure air jet to pre-cool and dehumidify outdoor fresh air, and conducts heat and moisture exchange between air and the wet film outside the tube in indirect contact. A high-pressure air injection section and a tubular indirect evaporative cooling section are adopted. The first stage cooling and dehumidification section is a high-pressure air injection section, which mainly uses the general compressed air or air compressor compressed air of industrial, mining, textile and other enterprises to pre-cool the outdoor fresh air. Dehumidification; the second tube-type indirect evaporative cooling section uses the circulating water pump 8 to pressurize the water purified by the water filter 7 in the water collection tank 6, and then transmits it to the dripping nozzle 10 through the low-pressure water supply pipe 9, for heat exchange. The outer wall of the tube is sprayed, and the water flows down by gravity, wets the outer wall of the tube, forms a thin water film on the surface to exchange heat and moisture with the secondary air, and performs iso-humid cooling of the primary air in the tube.

The outer surface of the heat exchange tube is corrugated, and the inner surface is provided with a metal helical coil. After the surface of the heat exchange tube is corrugated, the spray water is easy to form a uniform water film on the outer surface of the heat exchanger tube, which increases the water and heat exchange. The contact area and contact time of the cooler can be used to enhance the heat exchange between the water outside the tube, the secondary air and the primary air inside the tube, thereby improving the heat and mass transfer effect of the evaporative cooler. The use of the corrugated outer surface heat exchange tube can save the water-absorbing material coated on the outside of the tube, greatly saving costs and reducing the maintenance workload for replacing the water-absorbing material.

The water in the water collecting tank 6 will be processed through the water filter 7 to prevent the clogging of the circulating water pump 8 and the dripping nozzle 10 water outlets.

The blower 13 sends the processed air to the air compressor inlet through the air supply port 14, and provides low-temperature, low-humidity, low-enthalpy air to improve the air output and efficiency of the air compressor.

The working process of the utility model air-conditioning unit:

The outdoor fresh air enters through the air inlet 2, passes through the coarse-effect filter 3 to filter the dust, and then passes through the first-stage cooling and dehumidification section—the high-pressure air injection section. The compressed air is ejected in the direction, and the compressed air expands and mixes with the airflow of the outdoor fresh air. The compressed air expands and absorbs heat, so that the outdoor fresh air is initially cooled and dehumidified. The pre-cooled air enters the second-stage tubular indirect evaporative cooling section. At the same time, the water is pressurized by the circulating water pump 8 to pressurize the purified water in the water collection tank 6, and then drips onto the outer wall of the heat exchange tube through 10 drip nozzles. Gravity flows downward to wet the outer wall of the tube and form a water film, and the return air is used as the secondary air to exchange heat and moisture with the water film, so that the primary air in the tube is isohumidally cooled. Finally, the treated air is sent to the air inlet of the air compressor by the air blower 13 through the air outlet 14 .

Claims (4)

1. high-pressure jet and tube type indirect evaporative cooler composite evaporation cooling air conditioning unit, it is characterized in that, be respectively arranged with air inlet (2) and air outlet (14) on relative two sidewalls of machine unit shell, described air inlet (2) locates to be provided with blinds (1), the direction that enters by air in machine unit shell is disposed with roughing efficiency air filter (3), high-pressure jet standpipe (4), tube type indirect evaporative cooler and pressure fan (13), be furnished with a plurality of along the high-pressure jet nozzle (5) of airintake direction along spray on the described high-pressure jet standpipe (4), described high-pressure jet standpipe (4) is connected with universal compressed air duct, be provided with Secondary Air return air inlet (11) on corresponding machine unit shell one sidewall of described tube type indirect evaporative cooler, be provided with Secondary Air exhaust outlet (12) on the corresponding machine unit shell wall in described tube type indirect evaporative cooler top.

2. composite evaporation cooling air conditioning unit according to claim 1 is characterized in that, described high-pressure jet standpipe (4) is connected with air compressor machine.

3. composite evaporation cooling air conditioning unit according to claim 1, it is characterized in that, the structure of described tube type indirect evaporative cooler is: include the pipe heat exchanger that the many heat exchanger tubes that are arranged in parallel form, the top of pipe heat exchanger is provided with to drip and sprays mouth (10), the bottom of pipe heat exchanger is provided with header tank (6), be provided with water filter (7) in the header tank (6), water filter (7) in the header tank (6) by low pressure feed pipe (9) with droplet spray mouth (10) and be communicated with, also be provided with water circulating pump (8) on the low pressure feed pipe (9).

4. composite evaporation cooling air conditioning unit according to claim 3 is characterized in that, the outer surface of the heat exchanger tube of described pipe heat exchanger is provided with ripple, and the inner surface of heat exchanger tube is provided with the metal spiral coil.