RU2704932C1 - Air humidification device - Google Patents

Abstract

FIELD: ventilation and air conditioning.

SUBSTANCE: invention relates to ventilation and air conditioning equipment and can be used for air humidification in rooms for various purposes. Device for air humidification includes housing (1), tray (3) filled with water and humidifying element (2), made in the form of system of recesses (4) on lower wall of housing (1) and immersed into tray (3) to the specified level, with possibility of water ingress into recesses (4) through connecting holes (6) made in their deepest parts, behind each recess (4) in direction of flow of air supplied to humidification, guide aprons (5) are installed. Recesses (4) are made detachable spherical or other shape with their relative depth h/d>(0.35…0.5). Guide aprons (5) are made in the form of sectors of a hemisphere or other shape. In tray (3) channels are made for supply (7) and outlet (8) of water to maintain constant water level in recesses l=(0.1…0.2)h, wherein adjustment of water supply is performed by means of valve (9). Also, order and density of recesses (4) location on humidifying element (2) surface is determined.

EFFECT: invention allows simplifying the design of the device for air humidification and improving its efficiency, as well as increasing service life of ventilation and air conditioning systems used in industry.

5 cl, 2 dwg

Description

The invention relates to techniques for ventilation and air conditioning and can be used to humidify air in rooms for various purposes.

There are various methods of humidification in installations, ventilation and air conditioning systems used in industry, the description of which is presented in the book "Humidification. Systems and application ”/ P. Iselt, W. Arndt, M. Wilke. - Publishing house "Technosphere, Euroclimate", 2007. - P. 216. Organization of air humidification and its supply to the consumer on an industrial scale requires significant material and financial costs.

Known household devices for humidification, the description of which is given on the website / https: //sovetexpert.ru/kak-rabotaet-uvlazhnitel-vozduxa.html. Of these, the most simple in design and reliable in operation are traditional or classic models. They are usually equipped with a built-in fan, which draws air from the room and drives it through the evaporator, at the bottom of which is a container of water. To protect against dust and other contaminants, filters are installed in the evaporator. These devices work without a hygrostat, and the desired humidity is maintained automatically. This requires a small amount of energy and well-purified water (it works effectively with distilled water). The use of household humidifiers in industry is not effective enough due to their low productivity, high requirements for water treatment and frequent filter changes. Therefore, the creation of simple in design and cheap air humidifiers that can use the kinetic energy of air in ventilation and air conditioning systems in residential and industrial premises is an urgent problem.

It is known that in thermal power plants, to intensify convective heat transfer in cooling systems of working elements, detachable recesses of a traditional spherical shape are used (hereinafter referred to as recesses). The main distinguishing feature of these grooves is their relative depth h / d, where h is the maximum depth of the groove, d = 4F / P is the hydraulic diameter of the groove in the plan. Here F is the notch area in the plan, and P is its perimeter. When a coolant flows around such a recess (h / d> 0.2), a self-organizing large-scale vortex structure (SQS) is formed in it, which arises successively in one or another epicenter of the recess and leaves it on the heat-exchange surface, increasing heat transfer and hydraulic losses: (see the monograph “Intensification of heat transfer by spherical recesses under the influence of perturbing factors” / A.V. Schukin, A.P. Kozlov, R.S. Agachev, Ya.P. Chudnovsky; edited by Acad. V.E. Alemasova, Kazan: Publishing House of Kazan, State Technical University, 2003. - 143 pp. Tradits spherical ionic detachable cavities have not found their application in devices for humidifying air in rooms for various purposes, where, for climatic or technological reasons, due to the specifics of the working process, dry air is or is circulating.

Known air humidifier, the closest in technical essence to the claimed invention and adopted as a prototype (see RF Patent No. 174521, IPC F24F 6/00, F24F 6/16, publ. 10/18/2017, Bull. No. 29), comprising a housing, a pallet filled with water, a humidifying element, an inlet pipe, a fan with an electric motor, characterized in that the moisturizing element is made in the form of a closed tape stretched on rails and driven by an electric motor, part of the tape is immersed in a pan, the fan can rotate in a horizontal plane aspolagaetsya over the tape, and the inlet pipe - the pallet. In this utility model, the main novelty is that the constant humidification of the air occurs through its natural saturation with moisture, which eliminates its overmoistening. A vertically directed stream of humidified air provides uniform room humidification. And the rotation of the tape of the humidifying element, made of several layers of non-metallic mesh, between which the absorbent tissue material is placed, through a tray with water, allows to reduce the dimensions of the humidifier without loss of efficiency. Thus, the solutions used in the utility model increase the efficiency of the humidifier.

However, in the known technical solution, one or more structural elements (tape of the humidifying element, fan and electric motor) that rotate, can be damaged, which reduces the reliability and efficiency of the humidifier.

The technical problem to which the invention is directed is to increase the efficiency of humidification of a moving air flow in installations, ventilation and air conditioning systems used in industry, by simplifying the design of a device for humidifying air and reducing the cost of its manufacture and operation.

The technical result, the achievement of which the invention is directed, is to intensify the evaporation of water from the humidifying element (system of recesses) through the use of the vortex effect that arises in the recesses and the formation of SQS, which will simplify the design of the device for humidification of air and increase the life of the ventilation and air conditioning systems used in industry.

The technical result is achieved by the fact that in the device for humidifying the air, comprising a housing, a pan filled with water and a humidifying element, it is new that the humidifying element is made in the form of a system of recesses on the lower wall of the housing and is immersed in the pan at a predetermined level, with the possibility of falling water inside the recesses through the connecting holes made in their deepest parts, behind each recess in the direction of movement of the air stream supplied to the humidification, guide visors are installed.

The recesses are made detachable spherical or of another shape with their relative depth h / d> (0.35 ... 0.5), where h is the maximum depth of the recess, d is the hydraulic diameter of the recess in the plan.

The guide visors are made in the form of sectors of a hemisphere or other shape.

Channels for supplying and discharging water are made in the pan to maintain a constant water level in the recesses l = (0.1 ... 0.2) h.

The recesses are made in a different order and with a given density of their location, providing the required degree of air humidification.

The proposed invention is presented in FIG. 1 and 2 where:

FIG. 1 is a longitudinal section through a device for humidifying air;

FIG. 2 - A top view of the humidification element.

Where:

1 - the housing of the device for humidification;

2 - moisturizing element;

3 - a pan filled with water;

4 - detachable spherical recesses;

5 - guiding visors;

6 - holes in the deepest parts of the recesses;

7 - channel for supplying water to the pan;

8 - channel for removal and regulation of the water level from the pallet;

9 - valve for regulating the flow of water into the pan;

10 - part of the main stream entering the recess when interacting with the guide visors;

11 - SKVS;

12 - epicenters of the occurrence of SLE inside the recesses,

h is the depth of the excavation;

d is the hydraulic diameter of the recess in the plan;

l is the water level in the recesses;

Light arrows indicate the direction of movement of the stream of dry air that needs to be humidified.

Device for humidification works as follows. The main body of dry air (indicated by bright arrows) is supplied into the housing 1 of the device (see Fig. 1). When flowing around the humidifying element 2, made on the bottom wall of the housing 1 in the form of a system of tear-off spherical recesses 4, part of the main stream 10 enters the recesses 4 and creates a vortex effect, under the influence of which an SCSS 11 is formed in them (see Figs. 1 and 2) , which occurs sequentially in one or the other epicenter 12 of the recess. It should be noted that the shape of the recesses and their sizes can be different, but the recesses must be tear-off with h / d> (0.35 ... 0.5), where h is the maximum depth of the recess, d is the hydraulic diameter of the recess in the plan. To intensify the process of formation of HSS 11 in the recesses 4 behind each of them in the direction of movement of the main air flow supplied to the humidification, guide visors 5 are mounted attached to the surface of the moisturizing element 2. The fasteners can be carried out by welding, bolted joints or other methods. The guide visors are made in the form of sectors of a hemisphere or another shape that allows the most rational implementation of the process of intensification of the HSS 11 in the recesses 4.

In each recess 4 there is an interaction of SKVS 11 with water, which enters from the pallet 3 into the recesses 4 through the connecting holes 6 (see Fig. 1), made in their deepest parts. As a result of the evaporation of water and saturation of it with vapors of SKVS 11, which exit the recesses 4, the main air stream is moistened. To ensure the specified mode of moistening in the pan 3 channels are made for supplying 7 and water outlet 8 to maintain a constant water level in the recesses l = (0.1 ... 0.2) h. This process is controlled by valve 9.

The experiments performed by the authors on a single tear-off spherical recess with the same water level in it and with a guiding visor in the form of a hemisphere sector installed behind the recess in the direction of movement of the main air flow showed an increase in air humidity by a factor of two.

Changing the specified mode of humidification can also be carried out by making recesses 4 in a different order and with a given density of their location.

Claims (5)

1. A device for humidification of air, comprising a housing, a pan filled with water and a humidifying element, characterized in that the humidifying element is made in the form of a system of recesses on the bottom wall of the housing and immersed in the pallet at a predetermined level, with the possibility of water entering the recesses through the connecting holes made in their deepest parts, behind each recess in the direction of movement of the air flow supplied to the humidification, guide visors are installed. 2. A device for humidification of air according to claim 1, characterized in that the recesses are made spherical or other in shape with a relative depth h / d> (0.35 ... 0.5), where h is the maximum depth of the recess, d is hydraulic recess diameter in plan. 3. A device for humidifying air according to claim 1, characterized in that the guiding visors are made in the form of sectors of a hemisphere or other shape. 4. A device for humidifying air according to claim 1, characterized in that the channels for supplying and discharging water are made in the pan to maintain a constant water level in the recesses l = (0.1 ... 0.2) h. 5. A device for humidifying air according to claim 1, characterized in that the recesses are made in a different order and with a given density of their location, providing the required degree of humidification of the air.

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