CN201187849Y - Pipe type indirect and stuffing type direct two-stage evaporation cooling air conditioner unit - Google Patents

Abstract

The utility model discloses a tube-type indirect and stuffing-type direct two-stage vapour cooling air-conditioning unit, which comprises a filter screen, a tube-type indirect evaporative cooler, a stuffing-type direct evaporative cooler and a blower which are arranged in sequence based on the air intake direction. Water distributors in the tube-type indirect evaporative cooler and the stuffing-type direct evaporative cooler adopt a target type impinging current nozzle structure; the water is distributed evenly for saving energy. The structure of the air-conditioning unit is simple and practical, the air processing function is diverse, and the tube-type indirect evaporative cooler is not easily blocked, the cooling efficiency is high, not only the cooling air after the processing of two-stage temperature reduction is provided for a building, but also the damp and the clean air after the processing of humidifying, washing, filtering and purifying is provided for the building.

Description

A tubular indirect and packing direct two-stage evaporative cooling air conditioning unit

technical field

The utility model belongs to the technical field of air conditioning and refrigeration, and relates to an air handling unit combining an indirect evaporative cooler and a direct evaporative cooler, in particular to a tube type indirect and packing type direct two-stage evaporative cooling air conditioning unit.

Background technique

At present, evaporative cooling air-conditioning technology has been popularized and applied in Northwest my country such as Xinjiang. This energy saving and environmental protection technology plays a very positive role in promoting energy saving and emission reduction. However, most of the indirect evaporative coolers used are plate-fin heat exchangers. Although this type of heat exchanger has a compact structure and high heat exchange efficiency, due to the narrow passage of the heat exchanger, scale and air dust are easy to The flow channel of the heat exchanger is blocked, and it is difficult to clean. Therefore, the resistance is large, the energy consumption is high, and the heat exchange efficiency is reduced. In addition, only relying on indirect evaporative cooling for single-stage cooling, the temperature drop is limited, and it is difficult to reach the dew point state of the machine, which greatly affects the air supply effect of the air conditioner.

Contents of the invention

The purpose of this utility model is to provide a tube-type indirect and packing-type direct two-stage evaporative cooling air-conditioning unit, which avoids the disadvantages of low heat exchanger efficiency and high energy consumption caused by blockage of the flow channel of the plate-fin indirect evaporative cooler, and makes cooling The amplitude is almost close to the machine dew point state.

The technical solution adopted in the utility model is that the two-stage evaporative cooling air conditioning unit of the tubular indirect and packing type directly includes filter screens, tubular indirect evaporative coolers, packing direct evaporative coolers and air blowers arranged in sequence according to the air inlet direction. .

The utility model is also characterized in that,

The tubular indirect evaporative cooler includes a secondary air fan, a water distributor A, a heat exchange tube and a water storage tank arranged in sequence from top to bottom. The water distributor A consists of a spray branch pipe and multiple nozzles arranged on it. A composition.

The nozzle A adopts the target impinging flow nozzle, including two nested cylindrical walls, and the two nested cylindrical walls form an inner channel and an outer channel, and the inner channel and the outer channel are somewhere on the wall In communication, the air outlet ends of the two cylinder walls are vertically provided with a target plate, and there is a certain distance between the target plate and the port of the cylinder wall, and a triangular cone is arranged on the target plate corresponding to the air outlet of the cylinder wall.

A water distributor B is arranged above the packing type direct evaporative cooler, and the water distributor B is composed of a spray branch pipe and a plurality of nozzles B arranged on it.

The nozzle B adopts the target impinging flow nozzle, including two nested cylindrical walls, and the two nested cylindrical walls form an inner channel and an outer channel, and the inner channel and the outer channel are somewhere on the wall In communication, the air outlet ends of the two cylinder walls are vertically provided with a target plate, and there is a certain distance between the target plate and the port of the cylinder wall, and a triangular cone is arranged on the target plate corresponding to the air outlet of the cylinder wall.

The utility model takes the tube-type indirect evaporative cooler as the core, and organically combines the tube-type indirect evaporative cooler and the packing-type direct evaporative cooler to form a tube-type indirect and packing-type direct two-stage evaporative cooling air conditioning unit. Compared with some evaporative cooling air conditioning units, they have the following characteristics:

1) The combination of tube-type indirect evaporator and packing-type direct evaporative cooler can not only provide cooling air with a large temperature drop for buildings, but also provide humid air for buildings after humidification.

2) The indirect evaporative cooler adopts tube type, which avoids the disadvantages of low heat exchanger efficiency and high energy consumption caused by the easy blockage of the flow channel of the plate-fin indirect evaporative cooler. It is more suitable for areas such as Northwest my country with large dust in the air and hard water It is easy to produce scale and other harsh environments.

3) The unit is equipped with a packing type direct evaporative cooler, which not only has the function of humidification, but also can be used as a wet film humidifier; it can also purify the air and play the role of a scrubbing air filter.

4) The water distributors installed on the tube-type indirect evaporator and the packing-type direct evaporative cooler adopt target-type impinging flow nozzles, which can form an umbrella-shaped water film, which greatly improves the uniformity of water distribution, thereby improving heat transfer. efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model air-conditioning unit;

Fig. 2 is a structural schematic diagram of a tubular indirect evaporative cooler;

Fig. 3 is a schematic structural view of the nozzle in the present invention, wherein a is a perspective view, and b is a cross-sectional view.

In the figure, 1. Filter screen, 2. Tube type indirect evaporator, 3. Filled type direct evaporative cooler, 4. Blower fan, 5. Secondary air fan, 6. Nozzle A, 7. Water distributor A, 8. Water pump, 9. inner channel, 10. outer channel, 11. triangular cone, 12. target plate, 13. water distributor B, 14. nozzle B.

Detailed ways

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

The utility model organically connects the tube type indirect evaporator and the packing type direct evaporative cooler in series, and realizes the air conditioning unit integrating the functions of indirect evaporative cooling and direct evaporative cooling. Its structure is shown in Figure 1. The direction includes a filter screen 1, a tube-type indirect evaporative cooler 2, a packing-type direct evaporative cooler 3 and a blower 4 arranged in sequence.

Compared with the plate-fin indirect evaporative cooler, the tube-type indirect evaporative cooler distributes water more evenly and has a wider flow channel, which is less prone to clogging and has less flow resistance, which is conducive to evaporative cooling. Therefore, the utility model adopts a tubular indirect evaporative cooler, and its structure is shown in Figure 2, including a secondary air fan 5, a water distributor A7, a heat exchange tube and a water storage tank, and the water storage tank is connected with a circulating water pump 8 , The water distributor A7 is composed of a spray branch pipe and a plurality of nozzles A6 arranged on it.

The direct evaporative cooler 3 adopts a packed structure, and a water distributor B13 is arranged above it. The water distributor B13 is also composed of a spray branch pipe and a plurality of nozzles B14 arranged on it.

Blower 4 is used for delivering the cooled air to the air-conditioned room.

In the present utility model, nozzle A6 and nozzle B14 both adopt target-type impinging flow nozzles. Referring to FIG. The channel 10, the inner channel 9 and the outer channel 10 communicate with each other somewhere on the cylinder wall, and one end of the two cylinder walls is perpendicular to the cylinder wall, and the target plate 12 is arranged at a certain distance from the cylinder wall port. A triangular cone 11 is arranged on the target plate 12 corresponding to the air outlet of the cylinder wall.

Working process of the present utility model:

The outdoor fresh air enters the heat exchange tube of the tube-type indirect evaporative cooler, and is cooled by the water outside the tube and the secondary air. deal with.

Claims (5)

1. A tube-type indirect and packing-type direct two-stage evaporative cooling air-conditioning unit is characterized in that, according to the direction of air intake, it comprises a filter screen (1), a tube-type indirect evaporative cooler (2), and a packing-type direct evaporation cooler (3) and blower (4). 2. The air conditioning unit according to claim 1, characterized in that, the tube-type indirect evaporative cooler (2) includes a secondary air fan (5), a water distributor A (7) arranged in sequence from top to bottom ), a heat exchange tube and a water storage tank, the water distributor A (7) is composed of a spray branch pipe and a plurality of nozzles A (6) arranged thereon. 3. The air-conditioning unit according to claim 2, characterized in that, said nozzle A (6) adopts a target-type impinging flow nozzle, comprising two matching cylinder walls, and two matching cylinder walls The wall forms an inner channel (9) and an outer channel (10), and the inner channel (9) and the outer channel (10) are connected at a certain place on the cylinder wall, and one end of the two cylinder walls is perpendicular to the cylinder wall There are target plates (12), target plates (12) There is a certain distance from the port of the cylinder wall, and a triangular cone (11) is arranged on the target plate (12) corresponding to the air outlet of the cylinder wall. 4. The air conditioning unit according to claim 1, characterized in that a water distributor B (13) is arranged above the packing type direct evaporative cooler (3), and the water distributor B (13) is sprayed It consists of a branch pipe and a plurality of nozzles B (14) arranged on it. 5. The air conditioning unit according to claim 4, characterized in that, said nozzle B (14) adopts a target-type impinging flow nozzle, comprising two matching cylinder walls, and two matching cylinder walls The wall forms an inner channel (9) and an outer channel (10), and the inner channel (9) and the outer channel (10) are connected at a certain place on the cylinder wall, and one end of the two cylinder walls is perpendicular to the cylinder wall There is a target plate (12), and there is a certain distance between the target plate (12) and the port of the cylinder wall, and a triangular cone (11) is arranged on the target plate (12) corresponding to the air outlet of the cylinder wall.

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