CN201104058Y - Aluminum harmonica plate plate evaporative condenser - Google Patents

Abstract

The utility model discloses an aluminum harmonica plate-type evaporative condenser, which is mainly composed of a fan, a water retaining plate, a water distributor, a plate heat exchanger group, a pipeline, a water collecting tank, a water pump, a float valve, a liquid collecting pipe and Composed of air distribution pipes, the plate heat exchanger group is an aluminum harmonica plate heat exchanger group, and the aluminum harmonica plate heat exchanger group is divided into several independent aluminum harmonica plate heat exchangers, each aluminum harmonica plate The plate heat exchanger is composed of several aluminum harmonica plate plate units brazed with the left and right or upper and lower aluminum liquid collection pipes from top to bottom or from left to right, and then connected with the inlet and outlet liquid collection pipes to form an aluminum harmonica plate Plate heat exchanger group. In addition, every two aluminum harmonica plate heat exchange units are filled with fillers, thereby increasing the spreading area of the spray water, greatly reducing the thickness of the boundary layer and increasing the disturbance of the fluid, and strengthening the gap between the air and the spray water. heat transfer. The utility model has the advantages of high heat transfer efficiency, low cost, simple manufacture and convenient cleaning.

Description

Aluminum harmonica plate plate evaporative condenser

technical field

The utility model relates to a heat exchanger, in particular to a plate type evaporative condenser.

Background technique

The plate evaporative condenser is a new type of high-efficiency heat exchange equipment. It is an energy-saving and water-saving device designed using unsaturated evaporative cooling technology. It combines the secondary cooling and heat exchange process of the traditional water-cooled and air-cooled cooling towers. Eliminates unnecessary cooling towers and heat exchangers in the intermediate process. It has high heat transfer efficiency, compact structure, and small volume, which greatly reduces the initial investment of equipment. It is increasingly popularized in industries such as power, chemical, food, petrochemical, and refrigeration. , and achieved great success. At present, the core heat transfer components of evaporative condensers are still mainly "tubes". The research on them mainly focuses on the development and improvement of high-efficiency heat transfer tubes and the treatment of tube surfaces. The heat pipe replaces the existing smooth round pipe and adopts nano-fluid technology, and its heat transfer effect has been greatly improved; it is difficult to improve the heat transfer effect of the evaporative condenser based on the enhanced heat transfer tube. Breakthrough, therefore, another new approach and new technology must be sought to bring the evaporative condenser to a new level both in technology and in application. A new idea of "replacing tubes with plates" has opened up the a new field of research. The plate evaporative condenser is mainly composed of stacked heat transfer plates, the through holes of all heat transfer plates are connected together to form a fluid flow channel, and an inter-plate channel is formed between the heat transfer plates. Plates have disadvantages such as complex structure, low heat transfer efficiency, high processing cost, complex production process, poor mechanical sealing, difficult cleaning, large flow resistance, and many solder joints. The above-mentioned shortcoming of these heat exchanging units is mainly determined due to the technical defects of each.

Utility model content

The purpose of the utility model is to overcome the disadvantages of the above-mentioned prior art, such as complex structure, low heat exchange efficiency, high processing cost, complex production process, poor mechanical sealing, difficult cleaning, large flow resistance, and many solder joints, etc., and provides a Aluminum harmonica plate evaporative condenser with high heat exchange efficiency, simple structure, convenient processing and easy cleaning.

The utility model adopts the following technical scheme: the aluminum harmonica plate-type evaporative condenser is mainly composed of a fan, a water retaining plate, a water distributor, a plate heat exchanger group, a pipeline, a water collection tank, a water pump, a float valve, and a liquid collection main pipe , gas distribution main pipe, etc., the plate heat exchanger group is an aluminum harmonica plate heat exchanger group, and the aluminum harmonica plate heat exchanger group is divided into several independent aluminum harmonica plate heat exchangers; each aluminum harmonica The plate-plate heat exchanger is composed of several aluminum harmonica plate and plate units, and the aluminum harmonica plate and plate unit is composed of several plates extruded with multiple flow channels and the upper and lower or left and right aluminum liquid collecting pipes by brazing A single aluminum harmonica plate heat exchanger, each aluminum harmonica plate heat exchanger is fixed by a fixed shaft, and then connected with the inlet and outlet liquid collection headers to form an aluminum harmonica plate heat exchanger group.

The inlet and outlet of the flow channel of the aluminum harmonica plate heat exchanger are located at the end angle of the plate body or the side of the plate body, the inlet of the flow channel is provided with a gas distribution pipe, the outlet is provided with a liquid collection pipe, and the inlet of the flow channel passes through The gas distribution pipe is connected with the gas collection main pipe, and the outlet is connected with the liquid collection main pipe through the liquid collection pipe.

A layer of PVC filler is arranged between every two aluminum harmonica plate heat exchangers of the aluminum harmonica plate evaporative condenser, and the shape of the filler is corrugated, thereby increasing the spreading area of spray water and greatly reducing Thin boundary layer thickness and increased fluid turbulence enhance heat transfer between air and spray water.

The cross-sectional shape of the flow channel in the plate unit of the aluminum harmonica plate heat exchanger of the aluminum harmonica plate evaporative condenser is circular, oval, olive, square, trapezoidal, drop-shaped, etc., specifically by It depends on the actual application.

The aluminum harmonica plate plate unit of the aluminum harmonica plate evaporative condenser is placed vertically or folded horizontally, and the inclination between the horizontal flow channel and the horizontal position is 2-10°.

The outer surface of each aluminum harmonica plate heat exchanger is coated with a hydrophilic coating or passivated to form an oxidation protection film.

Compared with the prior art, the beneficial effects of the utility model are: (1) the aluminum harmonica plate heat exchanger is used as the heat exchanger of the evaporative condenser in the utility model, which is light in weight, low in cost and large in specific surface area , the total cross-sectional area of the internal flow channel is large, and the heat transfer efficiency is high; (2) Every two aluminum harmonica plate heat exchangers are filled with fillers, which can also be removed. Adding fillers can increase the disturbance of spray water and air , to reduce the thickness of the boundary layer, to achieve the effect of strengthening the heat transfer between air and water; (3) The installation group distance adjustment range of each aluminum harmonica plate heat exchanger is large, only need to adjust the position on the fixed axis, that is It can realize equal distance or variable distance, depending on the actual usage. (4) This aluminum harmonica plate evaporative condenser solves the defects of traditional plate heat exchangers in gas condensation and viscous liquid cooling, and also changes the traditional coil evaporative condenser that cannot achieve complete fluid attachment The defect of the heat exchange surface has the advantages of high heat transfer efficiency, low cost, simple manufacture and convenient cleaning.

Description of drawings

Figure 1 is a structural diagram of a high-efficiency and energy-saving aluminum harmonica plate-type evaporative condenser. In the figure: air distribution pipe 1, aluminum harmonica plate heat exchanger group 2, liquid collection pipe 3, pipeline 4, sump 5, water pump 6, ball float valve 7, fan 8, water retaining plate 9, nozzle 10.

Both Figure 2 and Figure 3 are group diagrams of the aluminum harmonica plate heat exchanger. Among them, Fig. 2 is a schematic diagram of horizontal arrangement of aluminum harmonica plate unit; Fig. 3 is a schematic diagram of vertical arrangement of aluminum harmonica plate unit.

Fig. 4 is the A-direction view of the aluminum harmonica plate-plate heat exchanger group;

Figure 5 is a view of a plate unit of a single aluminum harmonica plate heat exchanger.

Fig. 6 is a B-direction view of the plate unit of the aluminum harmonica plate.

Detailed ways

The specific implementation of the utility model is described below in conjunction with the accompanying drawings. The manufacturing process of the aluminum harmonica plate-type evaporative condenser includes the following steps: (1) first extruding several aluminum harmonica plates with multiple flow channels The plates are brazed together with the left and right or upper and lower aluminum tubes to obtain a single aluminum harmonica plate heat exchanger, as shown in Figure 2 or Figure 3; the outer surface of each aluminum harmonica plate heat exchanger is coated with pro- Water coating or passivation treatment to form an oxide protective film. (2) Several aluminum harmonica plate heat exchangers are brazed with the steam header through the steam inlet pipe, and the liquid outlet pipe and the header are brazed together, and fixed with a fixed frame. Add corrugated filler 12 between the aluminum harmonica plate heat exchangers to form the entire aluminum harmonica plate heat exchanger group; (3) connect the aluminum harmonica plate heat exchanger group from top to bottom with the corresponding accessories 4, sump 5, water pump 6, ball float valve 7, blower fan 8, water retaining plate 9, nozzle 10 links to each other, as shown in Figure 1, then the utility model is implemented.

Claims (6)

1. An aluminum harmonica plate-type evaporative condenser, which is composed of a fan, a water baffle, a water distributor, a plate heat exchanger group, a pipeline, a water collection tank, a water pump, a float valve, a liquid collection pipe and an air distribution pipe, It is characterized in that: the plate heat exchanger group is an aluminum harmonica plate heat exchanger group, and the aluminum harmonica plate heat exchanger group is divided into several independent aluminum harmonica plate heat exchangers, and each aluminum harmonica plate heat exchanger The heater is composed of several aluminum harmonica plate plate units brazed with the left and right or upper and lower aluminum liquid collecting pipes from top to bottom or from left to right, and then connected with the inlet and outlet liquid collecting pipes to form an aluminum harmonica plate plate replacement. Heater group. 2. The aluminum harmonica plate type evaporative condenser according to claim 1, characterized in that: each aluminum harmonica plate plate unit forming the aluminum harmonica plate heat exchanger is extruded with a plurality of flow channels , the cross-sectional shape of the runner is circular, oval, olive-shaped, square, trapezoidal, drop-shaped. 3. The aluminum harmonica plate-type evaporative condenser according to claim 1 or 2, characterized in that: the aluminum harmonica plate plate unit is placed vertically or folded horizontally, and the inclination between the horizontal flow channel and the horizontal position is 2-10°. 4. The aluminum harmonica plate-type evaporative condenser according to claim 1, characterized in that: a layer of packing is arranged between every two aluminum harmonica-plate heat exchangers, the shape of the packing is corrugated, and the packing material is for PVC. 5. The aluminum harmonica plate-type evaporative condenser according to claim 1 or 2, characterized in that: the inlet and outlet positions of the flow channel of the aluminum harmonica plate heat exchanger are located at the end angle positions of the plate body Or the side of the plate body, the inlet of the flow channel is provided with a gas distribution pipe, and the outlet is provided with a liquid collection pipe. 6. The aluminum harmonica plate-type evaporative condenser according to claim 1 or 2, characterized in that: the outer surface of each aluminum harmonica-plate heat exchanger is coated with a hydrophilic coating or undergoes passivation treatment to generate oxidation protective film.

Images