RU2338125C1 - System of air humidification - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: invention is related to equipment for air conditioning and may be used for creation of comfortable microclimate conditions in industrial rooms, in particular, as systems for local additional humidification of air. In system of air humidification, which consists of pneumatic nozzles, networks of pipelines that serve for water supply to them as well as compressed air, and unit of pneumatic nozzle control, pneumatic nozzle is made as acoustic, which contains casing with internal generator of acoustic oscillations in the form of nozzle and resonator, tubes for supply of air and liquid, at that casing is arranged in the form of vertically installed cylindrical bushing, in top part of which tube is installed for air supply, and tube for liquid supply is installed perpendicular to its axis, at that inside casing, coaxially to it, bushing is rigidly fixed with top and bottom flanges, at that bottom flange is rigidly fixed in bore arranged in casing, and inside bushing, coaxially to it, annular volume resonator is installed, which is arranged in the form of a cup with conical surface, cup is pressed on rod with diameter d of resonator, and in its tail part fixing discs are installed, which are arranged in the form of elastic tabs that interact with internal surface of bushing, and in bottom flange at least one nozzle is installed at the angle to resonator axis, value of which lies in the following interval of values: 20°÷40°, at that extension of nozzle axis lies on circumference that is located in the middle part of resonator conical surface.

EFFECT: higher efficiency and reliability of water pneumatic spraying process.

3 cl, 2 dwg

Description

The invention relates to techniques for air conditioning and can be used to create comfortable microclimate conditions in domestic, office and industrial premises, in particular, as local dampening systems for air, spray systems for flavored and medicinal solutions.

The closest technical solution to the claimed object is a humidification system according to the patent of the Russian Federation No. 2293923, class. F24F 3/06 of 10/10/96, containing a sprayer in the form of a pneumatic nozzle and a control unit.

Its disadvantage is the relatively low efficiency of the pneumatic spraying process.

The technical result is an increase in the efficiency and reliability of the process of pneumatic spraying of water.

This is achieved by the fact that in the air after-humidification system consisting of pneumatic nozzles, piping networks used to supply water and compressed air to them, and a pneumatic nozzle control unit, the pneumatic nozzle is made acoustic, containing a housing with an acoustic oscillation generator located inside nozzle and resonator, tubes for supplying air and liquid, while the housing is made in the form of a vertically arranged cylindrical sleeve, in the upper part of which there is a tube for and air, and perpendicular to its axis, there is a tube for supplying fluid, and inside the housing, coaxially to it, a sleeve with upper and lower flanges is rigidly fixed, while the lower flange is rigidly fixed in the groove made in the housing, and inside the sleeve, coaxially located an annular volume resonator made in the form of a cup with a conical surface, the cup being pressed onto a rod with a diameter d of the resonator, and fixing disks made in the form of elastic petals interacting with the inside are located in its rear part the front surface of the sleeve, and in the lower flange there is at least one nozzle at an angle to the axis of the resonator, the value of which lies in the following range of values: 20 ° ÷ 40 °, while the continuation of the axis of the nozzle lies on a circle located in the middle of the conical surface of the resonator .

Figure 1 presents the frontal section of the pneumatic nozzle of the humidification system, figure 2 - control unit for the operation of pneumatic nozzles.

Pneumatic humidification systems consist of nozzles (Fig. 1), piping networks used to supply water and compressed air to them, and a control unit for the operation of pneumatic nozzles (Fig. 2). In addition, there are safety devices that exclude the possibility of pouring water from the nozzles when the supply of compressed air to them is stopped (not shown).

Pneumatic acoustic nozzle (figure 1) contains a housing 1 with an ultrasonic frequency range sound generator placed in the form of a nozzle 3 and an annular volume resonator 5. The housing 1 is made in the form of a vertically arranged cylindrical sleeve, in the upper part of which there is an air supply tube 7 and perpendicular to its axis is a tube 8 for supplying liquid (water). Inside the housing 1, coaxially to it, a sleeve 14 is rigidly fixed with flanges - upper 2 and lower 6, and the lower flange 6 is rigidly fixed in the groove made in the housing 1.

Inside the sleeve 2, coaxially to it, there is an annular volume resonator 5, made in the form of a cup 9 with a conical surface 11. The cup 9 is pressed onto a rod with a diameter d of the resonator 5, and in its tail part 4 are fixed discs 12 and 13, made in the form of elastic the petals interacting with the inner surface of the sleeve 14. At least one nozzle 10 is located in the lower flange 6 at an angle to the axis of the resonator 5, the value of which lies in the following range of values: 20 ° ÷ 40 °, and the continuation of the axis of the nozzle 10 lies on a circle, finding I in the middle portion of the tapered surface 11 of the cavity 5. The inner surface of the sleeve 14 are coaxial conical 15 and cylindrical January 6 holes.

For optimal operation and reduction of energy consumption, the pneumatic nozzle is made with the following size ratios of its main elements, which are in the optimal range of values:

the ratio of the height h _{1 of the} annular volume resonator 5 to the distance h between the upper base of the conical surface 11 and the lower end surface of the housing 1 lies in the optimal range of values: h ₁ / h = 1 ÷ 3;

the ratio of the inner diameter d _{1 of the} cup 9 of the resonator 5 to the diameter d _{2 of} its outer cylindrical surface lies in the optimal range of values: d ₁ / d ₂ = 0.7 ÷ 0.9;

the ratio of the inner diameter d _{1 of the} cup 9 of the resonator 5 to the diameter d of its rod lies in the optimal range of values: d ₁ / d = 1 ÷ 3;

the ratio of the inner diameter d _{1 of the} cup 9 of the resonator 5 to the height h _{1 of the} annular volume resonator 5 lies in the optimal range of values: d ₁ / h ₁ = 1 ÷ 2.

Figure 2 presents the control unit of the pneumatic nozzles. It contains a hair moisture regulator 19, diaphragm valves 18 and 21, shut-off valves 17, a needle throttle 20 for regulating the pressure of compressed air in front of the diaphragm valves, a voltage transformer 22, control lamps 23 and 26, a switch 25 and an electro-pneumatic relay 24.

The humidification system operates as follows.

Pneumatic nozzles (figure 1) spray water with compressed air leaving the nozzle 3 at a speed of over 300 m / s. The jets of compressed air capture the water supplied to them from the nozzles 10 and, expanding, spray it into small droplets that evaporate in the zone of movement of the air flow that supports them in suspension. A spraying agent, for example, air, is supplied through a tube 7, where it encounters an annular volume resonator 5. In the latter, pressure pulsations occur in the latter, creating acoustic vibrations, the frequency of which depends on the parameters of the resonator. The acoustic vibrations of the spraying agent contribute to a finer atomization of the fluid supplied through the tube 8 to the nozzles 10, from where it enters the circle located in the middle of the conical surface 11 of the resonator 5, then crushes under the influence of acoustic vibrations of air into small droplets, resulting in a torch sprayed solution with air, the root angle of which is determined by the angle of inclination of the conical surface 11 of the resonator 5.

The control unit (figure 2) the operation of pneumatic nozzles works as follows. When supplying compressed air to the cavity above the membranes of the valves 14 and 17, the supply of compressed air first opens, and then water. After turning off the compressed air supply, the valves close in the reverse order; this protects against the risk of leakage of unsprayed water in the pipes through the nozzles. The described safety device is also used to automatically control the operation of the nozzles, which is carried out using a humidity controller 15 acting on an electro-pneumatic relay (electromagnetic valve) 20 mounted above the membrane valve 14 located on the water supply line. This relay, depending on whether the electric current is turned on or off, opens or closes a narrow hole in the valve cover 14, opening or closing the air outlet under the membrane to the atmosphere. At the same time, the pressure on the corresponding membranes changes, and consequently, the supply of water and compressed air to the nozzles. In some cases, each membrane valve has its own electro-pneumatic relay, which is switched on via an independent time relay. The electro-pneumatic relays are adjusted so that the water supply is turned off 10 seconds before the cessation of compressed air supply, and turned on 10 seconds later than the resumption of air supply.

Claims (3)

1. The air humidification system, consisting of pneumatic nozzles, piping networks used to supply water and compressed air to them, and a pneumatic nozzle operation control unit, characterized in that the pneumatic nozzle is made acoustic, containing a housing with an acoustic oscillation generator located inside nozzle and resonator, tubes for supplying air and liquid, while the housing is made in the form of a vertically arranged cylindrical sleeve, in the upper part of which there is a tube for supplying spirit, and perpendicular to its axis there is a tube for supplying fluid, and inside the housing, coaxially to it, a sleeve with upper and lower flanges is rigidly fixed, while the lower flange is rigidly fixed in the groove made in the housing, and inside the sleeve, coaxially located, is an annular a volume resonator made in the form of a cup with a conical surface, the cup is pressed onto a rod with a diameter d of the resonator, and fixing disks made in the form of elastic petals interacting with the inner NOSTA sleeve, while the lower flange is arranged at least one nozzle at an angle to the resonator axis, which value lies in the following value range: 20 ° -40 °, with the continuation of the nozzle axis lies on a circle located in the middle part of the conical surface of the resonator. 2. The air humidification system according to claim 1, characterized in that the pneumatic nozzle operation control unit comprises a hair moisture controller, membrane valves, shut-off valves, a needle throttle for regulating the pressure of compressed air in front of the membrane valves, a voltage transformer, control lamps, a switch and an electro-pneumatic relay. 3. The air humidification system according to claim 1, characterized in that the pneumatic acoustic nozzle is made with the following aspect ratios of its main elements: the ratio of the height h _{1 of the} annular volume resonator to the distance h between the upper base of the conical surface and the lower end surface of the housing lies in the optimal interval values: h ₁ / h = 1 ÷ 3; the ratio of the inner diameter d _{1 of the} resonator cup to the diameter d _{2 of} its outer cylindrical surface lies in the optimal range of values: d ₁ / d ₂ = 0.7 ÷ 0.9; the ratio of the inner diameter d _{1 of the} resonator cup to the diameter d of its rod lies in the optimal range of values: d ₁ / d = 1 ÷ 3; the ratio of the inner diameter d _{1 of the} resonator cup to the height h _{1 of the} annular volume resonator 5 lies in the optimal range of values: d ₁ / h ₁ = 1 ÷ 2.

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