CN103499223B - Standpipe type indirect evaporation cooler - Google Patents

Abstract

The vertical pipe type indirect evaporative cooler disclosed by the present invention includes two oppositely arranged blocking side plates, a vertical heat exchange tube group is arranged between the two oppositely arranged blocking sides, and the two blocking side plates are connected to the The upper part of the vertical heat exchange tube group is provided with a water collecting pan, and the upper part of the water collecting pan is provided with a spray device and a water baffle in turn. The two blocking side plates and the lower part of the vertical heat exchange tube group are provided with a circulating water tank. The circulating water tank is connected with the spraying device through a water supply pipe, and a circulating water pump is arranged on the water supply pipe. The vertical heat exchange tube is adopted in the vertical tube type indirect evaporative cooler of the present invention, which not only avoids the problem that the heat exchange tube is easy to be blocked in areas with heavy wind and sand, but also saves the occupied area, adopts various water distribution methods, and expands the use scope.

Description

Standpipe Indirect Evaporative Cooler

technical field

The invention belongs to the technical field of air conditioning equipment, and in particular relates to a standpipe type indirect evaporative cooler.

Background technique

With the introduction and continuous maturity of indirect evaporative cooling technology, the temperature drop effect of air-handling units, chillers and other air-conditioning equipment using evaporative cooling technology has been greatly improved, and its application is becoming wider and wider. The traditional plate-fin indirect evaporative cooler has a serious blockage problem in areas with strong wind and sand due to the narrow air flow channel; while the horizontal tube indirect evaporative cooler has a large equipment footprint due to its large length . Indirect evaporative coolers have the above defects, which limit the further promotion of evaporative cooling air-conditioning technology to a certain extent.

Contents of the invention

The purpose of the present invention is to provide a vertical tube type indirect evaporative cooler, which adopts vertical heat exchange tubes, which not only avoids the problem that the heat exchange tubes are easy to be blocked in areas with heavy sandstorms, but also saves the floor area. Water mode, expanding the scope of use.

The technical solution adopted in the present invention is that the standpipe type indirect evaporative cooler includes two oppositely arranged blocking side plates, and a vertical heat exchange tube group is arranged between the two oppositely arranged blocking side plates. The vertical heat exchange tube group is composed of multiple vertical heat exchange tubes. The upper part of the two plugging side plates and the vertical heat exchange tube group is provided with a water collecting pan. Plate, two blocking side plates and the lower part of the vertical heat exchange tube group are provided with a circulating water tank, which is connected to the spraying device through a water supply pipe, and a circulating water pump is provided on the water supply pipe.

The present invention is also characterized in that,

A plurality of vertical heat exchange tubes are evenly arranged in multiple rows and columns; the vertical heat exchange tubes are round tubes or oval tubes, with helical wires interspersed in the tube wall, and a diversion nozzle is arranged on the upper end of the vertical heat exchange tubes to guide the flow of water. The upper part of the mouth is flush with the bottom of the drip pan.

The vertical heat exchange tube is one of copper heat exchange tube, aluminum heat exchange tube or PVC heat exchange tube.

The diversion nozzle is arc-shaped.

The spraying device is a nozzle, a vertical water distribution pipe group or a horizontal water distribution pipe group.

Among them, the vertical water distribution pipe group is composed of a plurality of vertical water distribution pipes a corresponding to the vertical heat exchange pipes, and the water outlet end of each water distribution pipe a vertically extends into the diversion nozzle of the corresponding vertical heat exchange pipe , A number of spray holes are arranged on the wall of the water distribution pipe a near the water outlet.

Among them, the horizontal water distribution pipe group is composed of a plurality of horizontally arranged water distribution pipes b corresponding to the vertical heat exchange tubes, and the water outlet end of each water distribution pipe b is close to the nozzle of the corresponding vertical heat exchange tube.

The beneficial effects of the present invention are:

1) The indirect evaporative cooler of the present invention adopts a standpipe structure, the primary air flows outside the tube to slow down flow channel blockage; the secondary air and circulating water flow through the tube, and the self-scouring function of the circulating water can prevent flow channel blockage in the tube.

2) The indirect evaporative cooler of the present invention adopts a vertical pipe structure, which greatly reduces the size of the heat exchanger in the horizontal direction and reduces the occupied area.

3) In the indirect evaporative cooler of the present invention, the circulating water flows in the tube, which prevents water droplets from splashing when it contacts with the secondary air, the circulating water has high utilization efficiency, and the indirect evaporative cooler has a good cooling effect.

4) The inner wall of the heat exchange tube of the indirect evaporative cooler of the present invention is treated with hydrophilicity and interspersed with helical wires, which enhances the heat and moisture exchange efficiency between water and air, and the heat exchange effect is good.

Description of drawings

Fig. 1 is a schematic structural view of the parts composed of the water collecting pan, the plugging side plate and the vertical heat exchange tube group in the vertical tube type indirect evaporative cooler of the present invention;

Fig. 2 is the structural representation of vertical pipe type indirect evaporative cooler of the present invention;

Fig. 3 is a schematic structural view of a single heat exchange tube in the vertical tube type indirect evaporative cooler of the present invention;

Fig. 4 is a schematic diagram of the first water distribution mode of the vertical tube type indirect evaporative cooler of the present invention;

Fig. 5 is a schematic diagram of the second water distribution method of the vertical tube type indirect evaporative cooler of the present invention;

Fig. 6 is a schematic diagram of the third water distribution mode of the vertical tube indirect evaporative cooler of the present invention.

In the figure, 1. vertical heat exchange tube, 2. water collection tray, 3. plugging side plate, 4. diversion nozzle, 5. nozzle, 6. water retaining plate, 7. circulating water tank, 8. circulating water pump, 9. Water distribution pipe a, 10. Water distribution pipe b.

Detailed ways

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

The structure of the standpipe type indirect evaporative cooler of the present invention, as shown in Figure 2, includes two oppositely arranged blocking side plates 3, and a vertical heat exchange is arranged between the two oppositely arranged blocking side plates 3 The tube group, the vertical heat exchange tube group is composed of a plurality of vertical heat exchange tubes 1 , as shown in FIG. 1 . The upper part of the two blocking side plates 3 and the vertical heat exchange tube group is provided with a water collecting pan 2, and the upper part of the water collecting pan 2 is provided with a spray device and a water retaining plate 6 in turn, and the two blocking side plates 3 are connected with the vertical heat exchange tube group. The lower part of the type heat exchange tube group is provided with a circulating water tank 7, and the circulating water tank 7 is connected with the spraying device through a water supply pipe, and a circulating water pump 8 is arranged on the water supply pipe.

A plurality of vertical heat exchange tubes 1 are evenly arranged in multiple rows and columns; the vertical heat exchange tubes 1 are round tubes or oval tubes, with helical wires interspersed in the tube wall, and a diversion nozzle is arranged at the upper end of the vertical heat exchange tubes 1 4. As shown in FIG. 3; the diversion nozzle 4 is arc-shaped; as shown in FIG. 4, the upper part of the diversion nozzle 4 is flush with the bottom of the water collecting tray 2.

The vertical heat exchange tube 1 is one of copper heat exchange tube, aluminum heat exchange tube or PVC heat exchange tube.

The present invention provides three embodiments of the spraying device, which are the nozzle 5, the vertical water distribution pipe group or the horizontal water distribution pipe.

Among them, the vertical water distribution pipe group is composed of a plurality of vertical water distribution pipes a9 corresponding to the vertical heat exchange pipe 1, as shown in Figure 5, the water outlet end of each water distribution pipe a9 vertically extends into the vertical heat exchange pipe 1 In the diversion nozzle 4, each water distribution pipe a9 is provided with a number of spray holes on the pipe wall near the water outlet.

The horizontal water distribution tube group is composed of multiple horizontal water distribution tubes b10 corresponding to the vertical heat exchange tubes 1, as shown in Figure 6, the water outlet end of each water distribution tube b10 is close to the corresponding vertical heat exchange tube 1 There are 4 diversion nozzles.

The working principle of the standpipe type indirect evaporative cooler of the present invention is as follows:

The circulating water is sprayed in the water collecting pan 2 by the nozzle 5, the water distribution pipe a9 or the water distribution pipe b10, and falls along the inner walls of several vertical heat exchange tubes 1, and the secondary air flows through the vertical heat exchange tube from bottom to top under the traction of the fan. The inside of the heat exchange tube group is in countercurrent contact with the circulating water to exchange heat and moisture, the temperature of the water film decreases, and the indirect exchange occurs with the primary air flowing outside the vertical heat exchange tube 1 through the walls of multiple vertical heat exchange tubes 1. Heat, primary air and other humidity cooling, the heat is finally discharged into the atmosphere from the secondary air through the water retaining plate 6; the unevaporated circulating water falls back into the circulating water tank 7, and can be repeated under the action of the circulating water pump 8 cycle.

Blocking panels 3 are provided on opposite sides of the vertical heat exchange tube group to ensure that the primary air flows in a specified direction.

In the vertical tube type indirect evaporative cooler of the present invention, one end of the vertical heat exchange tube 1 is provided with an arc-shaped guide nozzle 4, which facilitates the automatic and uniform attachment of circulating water to the inner wall of the vertical heat exchange tube 1; The vertical heat exchange tube 1 can be a copper tube, an aluminum tube or a PVC tube; the tube type of the vertical heat exchange tube 1 can be a round tube or an elliptical tube, and the inner wall is treated with hydrophilic treatment, and the inner wall is interspersed with a helix to disturb the flow. Promote heat and moisture exchange between air and water.

The water distribution method in the standpipe type indirect evaporative cooler of the present invention can be nozzle spray type, pipe inner wall direct spray type or overflow type, specifically as follows:

The first water distribution method, as shown in Figure 4, the bottom of the water collecting tray 2 is flush with the upper edge of the diversion nozzle 4, the nozzle 5 sprays the circulating water in the water collecting tray 2, and part of the water is directly sprayed on the On the inner wall of the vertical heat exchange tube 1, part of the circulating water flows into the vertical heat exchange tube 1 through the diversion nozzle 4, and the inner wall of the tube attached to the vertical heat exchange tube 1 falls. The water distribution method is the nozzle spray type.

In the second water distribution method, as shown in Figure 5, the water distribution pipe a9 goes deep into the vertical heat exchange tube 1, and the circulating water flows into the water distribution pipe a9 with a certain water pressure under the action of the circulating water pump 8, and flows through the water distribution pipe a9. Spray at the spray hole at the end, the circulating water is directly sprayed on the inner wall of the vertical heat exchange tube 1, and falls along the inner wall of the vertical heat exchange tube 1 under the action of gravity. The water distribution method is to spray directly on the inner wall of the heat exchange tube Shower style.

The third water distribution method, as shown in Figure 6, the nozzle 5 is replaced by the water distribution pipe b10, the bottom of the water collecting pan 2 is lower than the upper edge of the diversion nozzle 4, and the water outlet of the water distribution pipe b10 is arranged on the upper part of the water collecting pan 2, when the water level When it is higher than the upper edge of the diversion nozzle 4, it will automatically flow into the vertical heat exchange tube 1 along the diversion nozzle 4, and the water distribution method is overflow type.

The vertical heat exchange tube is adopted in the vertical tube type indirect evaporative cooler of the present invention, which not only avoids the problem that the heat exchange tube is easy to be blocked in areas with heavy wind and sand, but also saves the occupied area, adopts various water distribution methods, and expands the use scope.

Claims (1)

1. The standpipe type indirect evaporative cooler is characterized in that it includes two oppositely arranged blocking side plates (3), and a vertical replacement is arranged between the two oppositely arranged blocking side plates (3). heat pipe group, the vertical heat exchange tube group is composed of a plurality of vertical heat exchange tubes (1), the two block side plates (3) and the upper part of the vertical heat exchange tube group are provided with a set A water pan (2), the upper part of the water collecting pan (2) is provided with a spray device and a water retaining plate (6) in turn, and the two blocking side plates (3) and the lower part of the vertical heat exchange tube group A circulating water tank (7) is provided, and the circulating water tank (7) is connected to the spraying device through a water supply pipe, and a circulating water pump (8) is arranged on the water supply pipe; The plurality of vertical heat exchange tubes (1) are uniformly arranged in multiple rows and columns; the vertical heat exchange tubes (1) are round tubes or elliptical tubes, with helical wires interspersed in the tube walls, and the vertical heat exchange tubes (1) are The upper end of the heat pipe (1) is provided with a diversion nozzle (4), and the upper part of the diversion nozzle (4) is flush with the bottom of the water collecting tray (2); The vertical heat exchange tube (1) is one of copper heat exchange tube or PVC heat exchange tube; The diversion nozzle (4) is arc-shaped; The spraying device is a nozzle (5), a vertical water distribution pipe group or a horizontal water distribution pipe group; The vertical water distribution pipe group is composed of a plurality of vertical water distribution pipes a (9) corresponding to the vertical heat exchange pipes (1), and the water outlet end of each water distribution pipe a (9) extends vertically into the corresponding vertical water distribution pipe a (9). In the guide nozzle (4) of the heat exchange tube (1), a number of spray holes are arranged on the wall of the water distribution pipe a (9) near the water outlet; The horizontal water distribution pipe group is composed of a plurality of horizontal water distribution pipes b (10) corresponding to the vertical heat exchange pipes (1), and the water outlet end of each water distribution pipe b (10) is close to the corresponding vertical heat exchange pipe b (10). At the nozzle (4) of the heat exchange tube (1).