SU975946A1 - Fence of ventilated building - Google Patents

Description

The invention relates to the construction, and, in particular, to the structures of the walls of ventilated buildings.

Known wall fencing ventilated buildings, including the outer and inner layers and insulation between them in the form of a porous backfill. The outer and inner layers are made with holes connecting the insulation with internal and external air (1).

Outside air passing through the entire cross-section of the backfill causes condensation to form in the areas of the openings.

The closest to the proposed 15 is a wall fence of the ventilated building, including the inner and outer protective layers, between which is insulated plates, of which at least one arriving to the inner protective layer, has on its surface facing the other plate, corrugations, forming air ducts, which are communicated through the inlet 25 holes in the outer layer with the atmosphere, and the outlet - in the inner layer with the room [2].

However, the normal operation of this wall fence in EU conditions is 30

2

natural ventilation depends on many factors

- from the direction of the wind flow,

- from the force of the wind flow. If the force of the wind flow is insufficient, the ventilation of the room will also not be achieved due to the large aerodynamic resistance of the air ducts.

In addition, in the known construction of the wall element, the temperature of the air entering the room will not be high enough due to the low intensity of the heat exchange process between the air and the heat sink surface, which for the insulation plate adjacent to the inner protective layer is a surface made with corrugations.

The temperature of this surface depends on the thickness of the corresponding insulation plate, and the latter is chosen large enough to avoid condensation in the area of the inlets.

Therefore, the temperature on the surface of the heat sink is due to the large

the thickness of the latter is low as

causes not high enough

heat transfer process intensity

3

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between it and the air, and, ultimately, affects the efficiency of the wall element.

Thus, the known construction of the wall element is not sufficiently reliable in operation, since its operation in natural ventilation conditions depends on many external factors and, moreover, it is not economical enough, since the air entering the room does not have time for Yu to utilize the heat lost by the room in sufficient amount. degree, and therefore it has a temperature lower than required, which ultimately requires additional heat. 15

The purpose of the invention is to improve the operational reliability and efficiency.

This goal is achieved by the fact that in the fencing of a ventilated building, including the inner and outer layers with insulation of plates made between them, of which at least · adjacent to the inner protective layer has on the surface facing the other plate, corrugations forming air duct channels communicating through the inlet holes in the outer layer with the atmosphere, and the exit holes in the inner layer with the room, the insulation plate with corrugations is made with transverse air ducts connecting cm rip airway channels, the latter being formed with a through-section at the outlet exceeded "" depleting orifice of the inlet.

The implementation of each of the air ducts with an outlet cross section at the outlet exceeding their entrance cross section allows to obtain a 40 channel, expanding towards its exit, and this ensures a reduction in the aerodynamic resistance of the channel.

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And, moreover, the consequence of such a constructive performance of air ducts is that the insulation plate at the locations of air ducts has a thickness that decreases as it approaches the exit of the latter, and, therefore, the temperature of the inner surface of air ducts will increase , which means that the air passing through them will heat up to a higher temperature.

Thus, the specified implementation of air duct channels not only reduces their aerodynamic drag-60, which increases the reliability of the element in conditions of natural ventilation, but at the same time increases its efficiency, as it provides a more intense heat-65

the exchange between the air and the surface. Heat removal, The execution of the insulation plate with cross ducts in the form of bridges, each of which connects the corresponding pair of adjacent air ducts, allows the latter to communicate with each other, which also increases the reliability of the fence in conditions of natural ventilation.

Fig, 1 shows a fragment of a wall fence, a section along the channel; FIG. 2 is a section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2

Wall fencing includes inner 1 and outer 2 protective layers, between which a heater of plates 3 and 4 is enclosed. At least one of the plates 3, adjacent to the inner protective layer, has on its surface facing the other corrugation plate, which form air guides channels 5, which at outlet 6 are communicated by means of openings 7 with atmosphere in the outer layer, and by means of outlet openings 9 located in the inner layer 1 with room.

Insulation plate 3 is made with pendant ducts 10 in the form of jumpers, each of which connects the corresponding pair of adjacent air-water channels 5 {

In addition, each of the airway channels is made at the outlet 8 with a flow area exceeding the flow area at its inlet 6.

A high-performance airtight insulation, in particular, foam plastic, can be used as plate insulation. External cold air due to the pressure difference from the inner and outer side of the element passes through the vent-. Tia 7, channels 5 and holes 9 in the room. In this case, the outside air is heated, utilizing the heat of the insulation layers. The flow of external air, passing through the air ducts, as if shields the heat flux from the room to the atmosphere, while heating up to almost the required temperature.

The latter circumstance in particular contributes to the implementation of airway channels at the exit with a flow area exceeding their flow area at the entrance. Due to this, the insulation plate in the zones of air ducts has a thickness that decreases towards the outlets of the latter, and consequently, the temperature on the inner surface of the air ducts (in this case, the heat removal surface) increases towards the outlets of the channels, which allows

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to tenify the heat exchange process between the air passing through the air ducts and the heat removal rate, and this, in turn, will increase the temperature of the air entering the room, which ultimately leads to an increase in the efficiency of the fence.

Such an embodiment of air ducts not only contributes to the improvement of the efficiency of the fence, but at the same time reduces their aerodynamic resistance and thereby increases the reliability of the fence.

The execution of the insulation plate with cross ducts in the form of jumpers, each of which connects a corresponding pair of adjacent air ducts, also contributes to an increase in the operational reliability of the element, since the latter, due to the specified execution, will no longer depend on the wind flow or its directivity . under any conditions of natural ventilation, uniform aeration of the entire room will be achieved.

Thus, the proposed design is more economical and more reliable in operation in conditions of natural ventilation.

In addition, the fence is sufficiently universal, as it can be used not only as a wall in a ventilated building,

but also as a floor and floor structure.

Claims (1)

Claim The fence of the ventilated building, including the inner and outer layers with insulation between the plates made of plates, of which at least adjacent to the inner layer has on the surface facing the other plate, corrugations forming air duct channels communicating through the inlets in the outer layer with the atmosphere, and the weekend in the inner layer - with the room, characterized in that, in order to increase operational reliability and efficiency, the insulation plate with corrugations is made with transverse air duct and channels connecting voeduhovodnye adjacent channels, the latter are adapted prohodnm section at the outlet orifice prevyiayushim their inlet.