CN112856654B

CN112856654B - Liquid drop and liquid film coupled rotational flow humidifier and humidification method

Info

Publication number: CN112856654B
Application number: CN202110095706.0A
Authority: CN
Inventors: 周萱; 何纬峰; 路裕; 安浩浩; 韩东; 岳晨; 蒲文灏
Original assignee: Nanjing University of Aeronautics and Astronautics
Current assignee: Nanjing University of Aeronautics and Astronautics
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2022-04-08
Anticipated expiration: 2041-01-25
Also published as: CN112856654A

Abstract

The invention relates to a liquid drop and liquid film coupled rotational flow humidifier and a working method thereof, which utilizes oscillation jet atomization and heat and mass transfer with air to realize the humidification of the air. The cyclone humidifier comprises a cyclone chamber, three tangential inlets, a turbulence column, 5-8 jet oscillators and a filter screen, wherein each jet oscillator comprises an inlet power nozzle, a mixing chamber, two feedback channels and an outlet nozzle. The jet oscillator without any movable part is adopted to generate downward self-sustaining oscillation jet, liquid films are formed on the wall surfaces of the cyclone chamber and the turbulence column, meanwhile, air spirally rises, and gas and liquid reversely flow under the coupling action of liquid drops and the liquid films, so that the heat and mass transfer of the air and the water is effectively enhanced, and the humidifying effect is remarkable. The equipment is easy to maintain, the fault rate is low, the water stain formation of the outlet and the shell is reduced, the service life of the equipment is prolonged, and the quality of wet air is improved. The invention has long service life, saves water resources and meets the national requirements of energy conservation and emission reduction and sustainable development of water resources.

Description

Liquid drop and liquid film coupled rotational flow humidifier and humidification method

Technical Field

The invention relates to a liquid drop and liquid film coupled rotational flow humidifier and a humidifying method, and belongs to the field of air humidification and power engineering.

Background

At present, in order to ensure the product quality and the human body comfort of products in various production and life of domestic electronic workshops and the like, the temperature and the humidity of the environment, particularly the humidity, must be strictly controlled, and dry air not only can generate static electricity and has potential safety hazards, but also has certain influence on human bodies. The existing humidifier generally adopts some modes to atomize water, and the atomized water vapor is blown out of the shell through the fan, so that the air humidifying effect is achieved, if the water vapor is sprayed too much, water stains can be left around an outlet and the shell, the operation safety of the humidifier is affected, and water resources are wasted. But currently there is no innovation in more efficient humidification methods.

Disclosure of Invention

The invention aims to provide a liquid drop and liquid film coupled rotational flow humidifier and a humidifying method, which reduce water resource waste and have a better humidifying effect.

A liquid drop and liquid film coupled rotational flow humidifier comprises a rotational flow chamber, three tangential inlets which are positioned at the bottom of the rotational flow chamber and are tangent to the rotational flow chamber, a turbulence column positioned in the rotational flow chamber, 5-8 jet flow oscillators which are arranged in an array mode and positioned at the top of the rotational flow chamber, and a filter screen positioned at the outlet of the rotational flow chamber, wherein each jet flow oscillator comprises an inlet power nozzle, a mixing chamber, two feedback channels and an outlet nozzle; when in work, air enters the cyclone chamber through the three tangential inlets and spirally rises around the turbulence column; water passes through fluidic oscillator's import power nozzle and gets into the mixing chamber, because the effect of coanda effect, rivers take place the bending in the mixing chamber, produce decurrent vibration efflux at outlet nozzle, air and water are at the indoor reverse flow of whirl, the gas-liquid fully contacts, reach the humidification effect, the air also carries out heat and mass transfer with the liquid film on whirl chamber and the vortex column wall surface simultaneously, the humid air that obtains under liquid film and liquid drop coupling effect is through the filter screen that is located the whirl chamber exit, filter some liquid drops that carry in the humid air, the humid air after the filtration is discharged from the whirl chamber top.

The humidifying method of the liquid drop and liquid film coupled rotational flow humidifier is characterized by comprising the following steps: the air gets into the swirl chamber through three tangential import, it is spiral rising to be round the vortex post, water gets into the mixing chamber through fluidic oscillator's import power nozzle, because the effect of conda effect, rivers take place the bending in the mixing chamber, produce decurrent vibration efflux at outlet nozzle, air and water are at the indoor reverse flow of swirl, the gas-liquid fully contacts, reach humidification effect, the air also carries out heat and mass transfer with the liquid film on swirl chamber and the vortex post wall simultaneously, the humid air that obtains under liquid film and liquid drop coupling effect is through the filter screen that is located the swirl chamber exit, filter some liquid drops that carry in the humid air, the humid air after the filtration is discharged from the swirl chamber top.

The turbulence column of the liquid drop and liquid film coupled vortex humidifier is vertically arranged in the middle of the vortex chamber, so that liquid drops are effectively prevented from being wrapped by a negative pressure area in the middle of the vortex chamber, and waste of water resources is reduced.

The sizes of three tangential inlets of the liquid drop and liquid film coupled cyclone humidifier are consistent, and the design aspect ratio is 1.25: 1 to ensure sufficient gas-liquid contact.

The liquid drop and liquid film coupled rotational flow humidifier jet flow oscillator adopts a wall-mounted jet flow oscillator and generates self-sustained oscillation jet flow at an outlet nozzle.

Compared with the prior art, the invention has at least the following advantages: the invention is different from the traditional humidification mode, adopts a jet oscillator without any movable part to generate downward self-sustaining oscillation jet, forms a liquid film on the wall surfaces of the cyclone chamber and the turbulence column, simultaneously, air spirally rises, and gas and liquid reversely flow in the cyclone chamber under the coupling action of liquid drops and the liquid film, thereby effectively enhancing the heat and mass transfer of the air and the water and having obvious humidification effect. The equipment is easy to maintain, the fault rate is low, the water stain formation of the outlet and the shell is reduced, the service life of the equipment is prolonged, and the quality of wet air is improved. The invention realizes the safe and efficient operation of the cyclone chamber and the jet oscillator, saves energy and water resources, and meets the national requirements of energy conservation and emission reduction and sustainable development of water resources.

Drawings

FIG. 1 is a swirl humidifier with coupled droplet and liquid membrane;

FIG. 2 is a top view of the present invention;

fig. 3 is a structural view of a fluidic oscillator.

Number designation in the figures: 1 swirl chamber, 2 tangential inlets, 3 turbulence columns, 4 fluidic oscillators, 5 filter screens, 6 inlet power nozzles, 7 mixing chambers, 8 feedback channels and 9 outlet nozzles.

Detailed Description

The operation of the liquid drop and liquid film coupled cyclone humidifier will be described with reference to fig. 1, 2 and 3.

Fig. 1 is a humidification method of the liquid drop and liquid film coupled cyclone humidifier provided by the invention, which is characterized by comprising the following processes: the air gets into the swirl chamber through three tangential import, it is spiral rising to be round the vortex post, water gets into the mixing chamber through fluidic oscillator's import power nozzle, because the effect of conda effect, rivers take place the bending in the mixing chamber, produce decurrent vibration efflux at outlet nozzle, air and water are at the indoor reverse flow of swirl, the gas-liquid fully contacts, reach humidification effect, the air also carries out heat and mass transfer with the liquid film on swirl chamber and the vortex post wall simultaneously, the humid air that obtains under liquid film and liquid drop coupling effect is through the filter screen that is located the swirl chamber exit, filter some liquid drops that carry in the humid air, the humid air after the filtration is discharged from the swirl chamber top.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and it is intended that the present invention cover the modifications, equivalents and alternatives of the above disclosure by those skilled in the art.

Claims

1. A liquid drop and liquid film coupled rotational flow humidifier is characterized in that:

the cyclone comprises a cyclone chamber (1), three tangential inlets (2) which are positioned at the bottom of the cyclone chamber (1) and are tangent to the cyclone chamber (1), and a turbulence column (3) which is positioned in the cyclone chamber; 5-8 jet oscillators (4) arranged in an array and positioned at the top in the cyclone chamber (1), and a filter screen (5) positioned at the outlet of the cyclone chamber; said fluidic oscillator (4) comprising an inlet motive nozzle (6), a mixing chamber (7), two feedback channels (8) and an outlet nozzle (9);

when in work, air enters the cyclone chamber (1) through the three tangential inlets (2) and spirally rises around the turbulent flow column (3); water passes through import power nozzle (6) entering mixing chamber (7) of fluidic oscillator (4), because the effect of the coanda effect, the rivers take place the bending in mixing chamber (7), produce decurrent oscillating jet in outlet nozzle (9), air and water reverse flow in swirl chamber (1), the gas-liquid fully contacts, reach humidification effect, the air also carries out heat and mass transfer with swirl chamber (1) and the liquid film on turbulent flow post (3) wall simultaneously, the humid air that obtains under liquid film and liquid drop coupling effect passes through filter screen (5) that are located the swirl chamber exit, filter some liquid drops that carry in the humid air, the humid air after the filtration is discharged from the swirl chamber top.

2. The droplet and liquid film coupled cyclone humidifier according to claim 1, wherein: the turbulence column (3) is vertically arranged in the middle of the cyclone chamber (1).

3. The droplet and liquid film coupled cyclone humidifier according to claim 1, wherein: the three tangential inlets (2) are of uniform size, with an aspect ratio of 1.25: 1.

4. the droplet and liquid film coupled cyclone humidifier according to claim 1, wherein: the jet oscillator (4) is a wall-mounted jet oscillator.

5. The method of humidifying a droplet and liquid film coupled cyclone humidifier according to claim 1, comprising the steps of:

air enters the cyclone chamber (1) through the three tangential inlets (2) and spirally rises around the turbulence column (3); water passes through import power nozzle (6) entering mixing chamber (7) of fluidic oscillator (4), because the effect of the coanda effect, the rivers take place the bending in mixing chamber (7), produce decurrent oscillating jet in outlet nozzle (9), air and water reverse flow in swirl chamber (1), the gas-liquid fully contacts, reach humidification effect, the air also carries out heat and mass transfer with swirl chamber (1) and the liquid film on turbulent flow post (3) wall simultaneously, the humid air that obtains under liquid film and liquid drop coupling effect passes through filter screen (5) that are located the swirl chamber exit, filter some liquid drops that carry in the humid air, the humid air after the filtration is discharged from the swirl chamber top.