CN110715379A - Internally heated multifilament humidifier and its working method - Google Patents

Abstract

The invention discloses an internal heating type multifilament humidifier and a working method thereof, belonging to the technical field of humidification and dehumidification. The humidifier mainly includes a cylinder body, a top plate and a bottom plate, and is characterized in that: the interior of the cylinder body is located between the top plate and the bottom plate and is also provided with an upper plate and a lower plate from top to bottom, and between the upper plate and the lower plate there are several thermal wire. When the liquid enters the humidifier, a good thin liquid film can be formed on the heat-conducting wire, and the temperature of the liquid film continues to rise as the gravity falls. When the air is ejected from the bottom, it can fully contact the thin liquid film, and heat and mass transfer occurs. Humidification by means of internal heating can ensure that the heat is fully absorbed by the two-phase fluid, which not only improves the heat exchange efficiency, but also simplifies the equipment space; the thin liquid film formed by the heat conducting wire increases the gas-liquid contact area and reduces the fluid pressure at the same time. reduce the power consumption of the system. The humidifier has a compact and novel structure, high heat exchange efficiency, and simple manufacture, which is of great significance for energy conservation, emission reduction, and industrial upgrading.

Description

Internally heated multifilament humidifier and its working method

technical field

The invention relates to the technical field of humidification and dehumidification, in particular to an internal heating type multifilament humidifier and a working method thereof.

Background technique

Air temperature and humidity are critical to industrial production, environmental regulation, and living and living. The humidifier is a humidification device that can effectively adjust the temperature and humidity of the air, which has attracted the attention of domestic and foreign researchers in recent years. Patent No. CN201510042152.2 discloses a spray humidifier suitable for humidification and dehumidification seawater desalination system. The humidifier has small pressure drop and simple structure, but has low heat exchange efficiency and poor humidifier. Patent Nos. CN201611214327.4 and CN201710120233.9 disclose a packing humidifier suitable for an evaporation system. The humidifier has good contact area and high mass transfer efficiency, but also has a large pressure drop. In addition, the above humidifiers are powered by external heating, the equipment occupies a large area and is complicated to manufacture.

Under the background of energy conservation and emission reduction, and industrial upgrading, how to improve the heat exchange efficiency of humidifiers, reduce energy consumption, and speed up equipment upgrades is an urgent problem to be solved.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the existing humidifiers, the invention provides an internal heating type multifilament humidifier with compact and novel structure, high heat exchange efficiency and pressure drop, and a working method thereof.

An internal heating type multifilament humidifier mainly includes a cylinder body, the cylinder body has a top plate and a bottom plate, and is characterized in that:

The center of the top plate is provided with a liquid inlet, and the center of the bottom plate is provided with a liquid outlet;

The wall surface of the upper part of the cylinder body is respectively provided with an air outlet and a power supply interface from top to bottom;

A plurality of air inlets are symmetrically arranged on the wall surface of the lower part of the above-mentioned cylinder;

The inside of the above-mentioned cylinder is located between the top plate and the bottom plate and is also provided with an upper plate and a lower plate from top to bottom; wherein the upper plate and the power interface are located at the same height, and the lower plate is located between the air inlet and the bottom plate;

Several nozzles and several gas channel pipes are distributed on the upper plate;

The above-mentioned lower plate has a boss structure, the bottom is a base, and the upper is a high platform; the bottom is provided with a number of liquid outlet holes, and the high platform is provided with a number of heat-conducting wires; the heat-conducting wires and the nozzles are fixed one by one.

The internal heating type multi-filament humidifier is characterized in that it includes the following working process: firstly, the heat-conducting wire is energized through the power interface, and the temperature of the heat-conducting wire increases and dissipates heat inside the cylinder; the liquid enters the liquid inlet from the top of the cylinder It enters the upper plate and is sprayed onto the heat-conducting wire through the nozzle to form a liquid film. The tension of the heat-conducting wire is provided by the lower plate and the upper plate. The liquid film is heated while falling; The liquid film of medium and high temperature is in direct contact, and the process of heat and mass transfer occurs. The humid air with high temperature and high humidity is discharged from the air outlet through the gas channel pipe; the liquid film after heat exchange with the humid air flows to the lower plate along the heat conduction wire. , collected to the bottom of the cylinder through the liquid outlet, and finally discharged from the liquid outlet to realize the humidification process.

The internal heating type multifilament humidifier of the invention has the advantages of compact and novel structure, high heat exchange efficiency, low pressure drop and simple and convenient manufacture. When the liquid enters the humidifier, a good thin liquid film can be formed on the heat-conducting wire, and the temperature of the liquid continues to rise as the gravity drops, preparing the preconditions for water evaporation. When the air is ejected from the bottom, it can fully contact with the thin liquid film, heat and mass transfer, the temperature and humidity keep rising, and finally it is discharged from the top. Humidification by internal heating can ensure that the heat is fully absorbed by the two-phase fluid, which not only improves the heat exchange efficiency, but also simplifies the equipment space; the liquid film formed by the thermal wire increases the gas-liquid contact area, while reducing the fluid pressure drop. It is of great significance for energy saving, emission reduction and industrial upgrading.

The internal heating type multifilament humidifier is characterized in that: the upper plate is in a disc structure; the nozzles are evenly distributed in a ring shape, or evenly distributed in a square shape; Satisfy the uniform contact between gas and liquid two phases in the cylinder, and efficient heat exchange.

The internal heating type multi-filament humidifier is characterized in that: since the liquid entering the cylinder body needs to be sprayed from the nozzles evenly distributed on the upper plate to the heat-conducting wires to form a liquid film, there will be a certain liquid height on the upper plate. , in order to prevent the liquid from the liquid inlet and the liquid on the upper plate from blocking the steam channel, the upper plate of the gas channel pipe is required to protrude from the upper plate.

The internal heating type multifilament humidifier is characterized in that: the liquid outlet holes are evenly distributed in a circle, so that the liquid collected from the heat conducting wires can be discharged uniformly.

The internal heating type multi-filament humidifier is characterized in that: in order to form a good liquid film on the heat-conducting wire to humidify the air quickly and effectively, the structure of the heat-conducting wire is preferably a stranded wire structure, and the material is preferably metal , the outer diameter is preferably 0.2-1.0mm, and the spacing is preferably 15-30 times the outer diameter.

Description of drawings

Fig. 1 is the structural representation of the proposed internal heating type multifilament humidifier;

Figure 2 is a top view of the proposed internally heated multifilament humidifier;

Fig. 3 is a partial enlarged view of the upper plate of the humidifier;

Fig. 4 is a partial enlarged view of the lower plate of the humidifier;

Figure 5 is a schematic diagram of the square arrangement of the nozzles on the upper plate of the humidifier;

Figure 6 is a schematic diagram of the annular arrangement of the nozzles on the upper plate of the humidifier.

Label name in the figure: 1-Cylinder body; 2-Air inlet; 3-Lower plate; 4-Liquid outlet; 5-Liquid outlet hole; 6-Conductive wire; 7-Nozzle; Air outlet; 10-liquid inlet; 11-power interface; 12-upper plate; 13-top plate; 14-bottom plate

Specific implementation method

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with accompanying drawings 1 , 2 , 3 and 4 .

The specific implementation method of the present invention is as follows: firstly, energize the heat-conducting wire 6 through the power interface 11, the temperature of the heat-conducting wire 6 rises and dissipates heat inside the cylinder body 1; the liquid enters the upper plate 12 from the liquid inlet 10 at the top of the cylinder body 1, The liquid film is formed by spraying the heat-conducting wire 6 through the nozzle 7. The tension of the heat-conducting wire 6 is provided by the lower plate 3 and the upper plate 12, and the liquid film is heated while falling; In the process of rising, it is in direct contact with the high-temperature liquid film, and the process of heat and mass transfer occurs. The high-temperature and high-humidity humid air is discharged from the air outlet 9 through the gas channel pipe 8; the liquid film after heat exchange with the humid air follows the heat conduction wire. 6 flows onto the lower plate 3, collects to the bottom of the cylinder 1 through the liquid outlet hole 5, and finally discharges from the liquid outlet 4, so as to realize the humidification process.

It should be noted that the equivalent scaling of the structure of the present invention is also within the scope of protection of the present invention, and when implementing the internally heated multifilament humidifier proposed by the present invention, special attention should be paid to the nozzle flow rate and flow rate to ensure film formation. At the same time, the gas flow rate is adjusted according to the liquid film flow rate, so as to achieve high-efficiency humidification.

Claims (6)

1. An internal heating type multi-wire humidifier mainly comprises a barrel body (1), wherein the barrel body (1) is provided with a top plate (13) and a bottom plate (14), and is characterized in that:

the center of the top plate (13) is provided with a liquid inlet (10), and the center of the bottom plate (14) is provided with a liquid outlet (4);

the wall surface of the upper part of the cylinder body (1) is respectively provided with an air outlet (9) and a power supply interface (11) from top to bottom;

a plurality of air inlets (2) are symmetrically arranged on the wall surface of the lower part of the cylinder body (1);

an upper plate (12) and a lower plate (3) are arranged between the top plate (13) and the bottom plate (14) from top to bottom in the cylinder body (1); the upper plate (12) and the power interface (11) are positioned at the same height, and the lower plate (3) is positioned between the air inlet (2) and the bottom plate (14);

a plurality of nozzles (7) and a plurality of gas channel pipes (8) are distributed on the upper plate (12);

the lower plate (3) is of a boss structure, a bottom platform is arranged below the lower plate, and a high platform is arranged above the lower plate; the bottom platform is provided with a plurality of liquid outlet holes (5), and the high platform is provided with a plurality of heat conducting wires (6); the heat conducting wires (6) are fixed with the nozzles in a one-to-one correspondence manner.

2. The internally heated multi-wire humidifier according to claim 1, wherein:

the upper plate (12) is in a disc structure;

the nozzles (7) are uniformly distributed in a ring shape or a square shape;

the gas channel pipes (8) are uniformly distributed in a ring shape.

3. The internally heated multi-wire humidifier according to claim 1, wherein:

an upper plate (12) extends above the gas passage pipe (8).

4. The internally heated multi-wire humidifier according to claim 1, wherein:

the liquid outlet holes (5) are uniformly distributed in a circular shape.

5. An internally heated multi-wire humidifier according to claim 1, wherein:

the heat conducting wires (6) are of stranded wire structures, are made of metal, have the outer diameter of 0.2-1.0mm, and have the spacing of 15-30 times of the outer diameter.

6. The operating method of an internally heated multiline humidifier according to claim 1, characterized by comprising the following operation processes:

firstly, electrifying the heat-conducting wires (6) through a power interface (11), raising the temperature of the heat-conducting wires (6) and dissipating heat to the interior of the cylinder body (1); liquid enters an upper plate (12) from a liquid inlet (10) at the top of the cylinder body (1) and is sprayed onto the heat-conducting wires (6) through a nozzle (7) to form a liquid film, the tension of the heat-conducting wires (6) is provided by a lower plate (3) and the upper plate (12), and the liquid film is heated while descending; air enters the cylinder body (1) from the air inlet (2), directly contacts with a high-temperature liquid film in the rising process to generate a heat and mass transfer process, and high-temperature and high-humidity wet air is discharged from the air outlet (9) through the gas channel pipe (8); the liquid film after heat exchange with the wet air flows onto the lower plate (3) along the heat conducting wires (6), is collected to the bottom of the cylinder body (1) through the liquid outlet hole (5), and is finally discharged from the liquid outlet (4), so that the humidification process is realized.

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