RU8781U1 - DEVICE FOR NATURAL ROOM VENTILATION - Google Patents

Abstract

1. A device for natural ventilation of the room, placed in a window and containing a housing with a supply air channel, characterized in that the supply air channel is made in the form of a labyrinth and sound-absorbing elements are located on its walls, while an air filter is installed at the channel inlet and at the outlet - blinds. 2. The device according to claim 1, characterized in that a lattice element is installed in front of the air filter. 3. The device according to claim 1, characterized in that between the outlet of the supply air channel and the louvers along the supply air an additional air filter is installed. The device according to claim 1, characterized in that the air filter is made of fabric or mesh. The device according to claim 1, characterized in that the blinds are made adjustable. The device according to claim 1, characterized in that the additional air filter is carbon.

Description

DEVICE FOR NATURAL ROOM VENTNLACIN

The utility model relates to the field of ventilation technology, and specifically to devices for natural ventilation of rooms located in windows or open ventilation openings.

Currently, in the construction of new residential premises, offices, in hotels, cottages, etc. Instead of ordinary double-glazed windows, they practice installing hermetically sealed windows with double-glazed windows, which have a number of advantages: they do not let dust through, reduce noise, and retain heat better. The same qualities can have ordinary wooden blocks with double frames, insulated with modern sealants.

Hermetically sealed windows isolate the room from the external environment, i.e. from air intake from the outside, therefore, it is advisable to install such windows only in those buildings where there is a forced air supply system (central air conditioning system). Otherwise, in rooms located in buildings without a central air conditioning system, to maintain a normal temperature, one has to either periodically open the windows, as a result of which noise and dust penetrate into the room with air, or

MPK6R24R13 / 18

The field of technology.

The prior art.

install an air conditioner, for example, a Split system, which also cannot be considered as the best solution. In rooms in which such an air conditioner is installed, the oxygen content is usually below normal, since the set temperature of the medium is maintained mainly only by cooling or heating the air circulating inside the room without supplying fresh air from the outside. Due to a lack of oxygen in such rooms, working capacity decreases, and fatigue appears.

As an alternative solution to the central air conditioning system in rooms, you can install individual air supply devices, for example, window fans, which provide forced or passive air supply from the outside.

A device for ventilating a room is known, placed in a window and comprising a housing with supply and exhaust air channels, fans located in the channels and a heat exchanger (German Patent No. 3337990, F24F13 / 18, 1984).

The known device provides a sufficiently high ventilation efficiency. However, the placement of fans in the housing allows only the fan's own noise to be reduced. The device does not reduce external noise and does not protect the room from dust.

Closest to the proposed utility model is a removable device for natural ventilation of the premises (USSR Author's Certificate 140186, F24F7 / 00, 1961). sectional elements formed from shields that are connected

in pairs.

The known device has a reduced noise level, because does not contain a fan. It provides an increase in the degree of mixing of incoming cold air with warm room air.

However, the known device also does not reduce external noise and does not prevent the penetration of dust into the room.

Utility Model Essence

The task to be solved by the present utility model is to create a device for natural ventilation of rooms, which has the property of reducing the level of external noise and preventing the penetration of dust into the room.

The technical result of the utility model is to provide natural ventilation of the room while reducing the level of external noise at the output of the device and reducing the amount of dust passing through it.

The above problem with the achievement of the technical result is solved by the fact that in the known device for natural ventilation of the room, placed in a window and containing a housing with a supply air channel, the supply air channel is made in the form of a labyrinth and sound-absorbing elements are located on its walls, while at the channel inlet an air filter is installed, and at the exit of the blinds.

3 A variant of the implementation of a utility model is also possible.

which an additional air filter is installed between the outlet of the supply air channel and the louvers along the supply air.

It is also possible when the air filter is made of fabric or mesh.

In addition, the blinds are adjustable.

In addition, an implementation option is possible when the additional air filter is carbon.

Brief Description of the Drawings

In FIG. 1 shows a cross section of a device for natural ventilation, the size of the window;

RI is the radius of the outlet;

LI is the height of the generatrix of the output annular section.

A device for natural ventilation of the room; the enclosure contains a housing 1, with a supply air channel 2 placed in it, sound absorbing elements installed on its walls; these elements 3. The supply air channel is made in the form of a maze. An air filter 4 is placed at the inlet of the supply air channel, and an additional air filter 6 can be installed between the output of the supply air channel and the blinds 6. An air filter 6 can be installed in front of the air filter.

A device for natural ventilation of the premises is installed in the window. Air circulation is provided by draft or draft generated by the ventilation shafts of the building. Outdoor noise i.e. sound waves passing through the supply air channel, made in the form of a maze, are repeatedly reflected from

4

surfaces on which sound-absorbing elements 3 are placed and lose their energy. The configuration of the labyrinth may be different, but the best result in reducing noise is achieved when sound waves perpendicular to the surface of sound absorbers1; ayush; their elements. Installed at the entrance to the labyrinth formed by the supply air duct 2, the air filter 4 provides protection against dust penetration. The volume of air entering the room is regulated by the degree of opening of the adjustable blinds 5 installed at the exit of the maze. In ecologically unfavorable areas, an additional air filter can be installed in front of the adjustable blinds, which can be used as carbon filters that are widely used in household appliances, which also do not allow some harmful components of polluted air to pass through.

The lattice element 7 provides protection of the device from atmospheric precipitation.

Depending on the type of windows, the housing of the device for natural ventilation of the room should be performed either rectangular (in cross section) or cylindrical. On ordinary windows with double or single glasses, you can install both rectangular for the size of the window, sash, etc., and cylindrical cases. It is easier to install cylindrical cases on windows with double-glazed windows, without removing the glass, cutting two circles with a diamond pencil, respectively, from the inside and outside of the window.

Dimensions are calculated taking into account the following rule: inside the supply air channel, the total area in any plane perpendicular to the direction of air passage

must remain constant, only under this condition, that the supply air channel, made in the form of a maze, will not create additional resistance for the passage of air flow, and on both sides. The radius of the outlet is taken as the basis for the calculation. Therefore, having the dimensions of the outlet, it is possible according to the geometry of the maze to calculate all the dimensions of the ventilation device.

Consider a square ventilation device shown in FIG. 1. For example, we derive a formula for calculating LI, taking into account the size of the outlet with a radius RI. The air flow after the labyrinth passes through the lateral surface of the cylinder of radius RI and height LI and leaves through a circle with radius RI. According to the above rule, the area of the side surface of the cylinder Si must be equal to the area of the circle S, given that

Si 27rRiLi. 27tRiLi- TuRj Li (7tRi V (27rRi) (Ri) / 2

By the same principle, all other formulas are derived for calculating the sizes of the components of a round or square (in cross section) ventilation device, which also depend on the number of turns of the maze. The higher the average level of external noise, the greater the number of novorotov necessary to reduce it to the optimum value, which is determined either experimentally, or take as a basis indicators of sanitary standards, depending on the purpose of the room. Pa figure 1 shows the supply air channel, made with a triple rotation of the direction of movement of the air, which reduces the noise level to the optimum value.

Utility Model Implementation Example

In the open window opening, a device for natural ventilation of the room with a 1 square case (in cross-sectional shape) is installed. At the inlet of the supply air channel, made in the form of a labyrinth, a mesh filter 4 is placed. The labyrinth, in particular, can be formed by connecting two parts of the housing with partitions displaced relative to each other, the space between which forms the supply air channel. An air grill element is installed in front of the air filter 7. An additional charcoal air filter is installed in front of the blinds 5 at the exit of the labyrinth 5. The blinds are opened 5. As a result of the natural ventilation device, the level of external noise is significantly reduced compared to using the prototype device, the air entering the room it is cleared of dusty inclusions. Thus, when using the proposed device ensures the achievement of a technical result.

Industrial applicability

The proposed utility model is implemented using well-known tools mastered by industry.

The most successfully proposed utility model can be applied in urban construction as an individual ventilation device for supplying air to the premises due to the draft created by the ventilation shafts of the building.

Claims (6)

1. A device for natural ventilation of the room, placed in a window and containing a housing with a supply air channel, characterized in that the supply air channel is made in the form of a labyrinth and sound-absorbing elements are located on its walls, while an air filter is installed at the channel inlet and at the outlet - blinds.  2. The device according to claim 1, characterized in that a lattice element is installed in front of the air filter.  3. The device according to claim 1, characterized in that between the outlet of the supply air duct and the louvers along the supply air an additional air filter is installed.  4. The device according to claim 1, characterized in that the air filter is made of fabric or mesh.  5. The device according to claim 1, characterized in that the blinds are made adjustable. 6. The device according to claim 1, characterized in that the additional air filter is carbon.