CN203100056U - Building natural ventilating system free of energy consumption - Google Patents

Abstract

The utility model discloses a building natural ventilation system without energy consumption. The wind-induced rotary exhaust cap and the wind-induced rotary air intake cap on the top of the air channel can comprehensively utilize solar energy and wind energy to enhance the natural ventilation capacity of the building, overcome the shortage of single energy, ensure the stable operation of the system, and effectively strengthen the indoor environment. Ventilation effect, improve air quality, and no need to consume electric energy, good energy-saving effect, and simple structure, easy installation and maintenance.

Description

A Natural Ventilation System for Buildings without Energy Consumption

technical field

The utility model relates to the technical field of building ventilation, in particular to a system for strengthening indoor natural ventilation by utilizing solar energy and wind energy.

Background technique

At present, the proportion of building energy consumption in the total energy consumption of the society is increasing. In my country, building energy consumption accounts for about 30% of the total annual energy consumption, and it is showing a rising trend. However, in building energy consumption, ventilation energy consumption occupies a large proportion, so it is of great significance to adopt reasonable ventilation technology to reduce ventilation energy consumption.

As an energy-saving and environment-friendly passive ventilation and cooling technology, natural ventilation technology has attracted more and more attention. It is energy-saving, environmentally friendly, and can improve indoor air quality and reduce building energy consumption. At present, the technologies used to enhance natural ventilation in buildings mainly include solar-enhanced chimney technology and roof ventilation technology using roof ventilators or vent caps, which only use solar energy or wind energy. However, the use of a single energy source is easily affected by external climate conditions, and the stability is poor, so it is difficult to effectively control the system to achieve the purpose of natural ventilation. For example, the solar chimney enhanced natural ventilation technology cannot work effectively when there is no solar radiation or at night, and the roof ventilator or ventilation cap used in the roof ventilation technology cannot achieve the effect of enhanced ventilation in the case of no wind or weak wind, or even Due to the resistance of the equipment itself, the natural ventilation capacity of the building is weakened.

Therefore, a new technical solution is needed to solve the above problems.

Utility model content

The purpose of this utility model is to provide a building natural ventilation system without energy consumption to address the deficiencies of the prior art, specifically to use wind energy and solar energy to strengthen the natural ventilation in the building, thereby improving the indoor air quality.

In order to realize the purpose of the above-mentioned utility model, the energy-consumption-free building natural ventilation system of the utility model can adopt the following technical solutions:

A natural ventilation system for buildings without energy consumption, including a transparent glass cover plate, a heat collecting plate installed on the south-facing exterior wall of the building, an air channel formed between the transparent glass cover plate and the heat collecting plate, and an air channel installed on the top of the air channel The wind-induced rotating air exhaust cap and the wind-induced rotating air inlet cap installed on the north side of the building, the air passage communicates with the interior space of the building, and the wind-induced rotating air inlet cap communicates with the interior space of the building .

The building natural ventilation system without energy consumption of the utility model can comprehensively utilize solar energy and wind energy to enhance the natural ventilation capacity of the building, overcome the shortage of using a single energy source, ensure the stable operation of the system, effectively enhance the indoor ventilation effect, improve the air quality, and do not need to consume Electric energy, energy-saving effect is good.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the utility model energy-free building natural ventilation system installed on a building.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, further set forth the utility model, should be understood that these embodiments are only used for illustrating the utility model and are not intended to limit the scope of the utility model, after having read the utility model, those skilled in the art will understand this utility model The modifications of various equivalent forms of the utility model all fall within the scope defined by the appended claims of the present application.

Please refer to Fig. 1, the utility model discloses a building natural ventilation system without energy consumption, which mainly includes a solar chimney on the south-facing outer wall of the building, a wind-induced rotating exhaust cap 8 on the top of the solar chimney, and a The wind-induced rotating wind inlet cap 9 on the north side of the building is connected with the building interior space.

The solar chimney is attached to the south-facing exterior wall 4 of the building, and includes a heat collecting wall, a transparent glass cover plate 1 and an air channel 2 . The heat-collecting wall is sequentially provided with a heat-insulating material layer 5, a south-facing outer wall 4 of the building, and a heat-collecting plate 3 coated with a selective absorption coating from the inside to the outside; The transparent glass cover plate 1 with good strength is coated with a selective absorbing coating on the inner surface of the transparent glass cover plate 1 , and the air channel 2 is arranged between the transparent glass cover plate 1 and the heat collecting plate 3 . The thickness of the air channel 2 is specific and can be adjusted according to the specific height of the building; a lower vent with a valve 6 communicating with the air channel 2 is provided below the heat collecting wall, and the lower vent connects the air channel 2 with the interior of the building. Spatial connectivity. The height of the lower vent is adjusted according to the specific height of the building. In order to maintain the ventilation performance of the system, preferably, the ratio of the height of the heat collecting plate 3, the thickness of the air channel 2, and the height of the lower vent is about 10:1:1.

The wind-induced rotating exhaust cap 8 is arranged on the top of the solar chimney, that is, the top of the air channel 2 and communicates with the air channel 2 . The wind-induced rotating exhaust cap 8 and the wind-induced rotating air intake cap 9 both include a bottom base 13, a rotating body 11, a bearing hub 12 connecting the bottom base 13 and the rotating body 11, and a bearing hub 12 installed on the rotating body 11. The wind guiding device 10, the wind-induced rotating air inlet cap 9 is provided with an air inlet 14, and the wind-induced rotating air exhaust cap 8 is provided with an air outlet 15. The bearing hub 12 ensures that the rotating body 11 can rotate freely with the wind direction. The outer ring of the bearing hub 12 is connected with the upper port of the bottom base 13 , and the inner ring of the bearing hub 12 is connected with the rotating body 11 . Rotate the upper part of the main body 11 to adjust the orientation of the air inlet 14 or the air outlet 15 according to the wind direction at any time, so as to ensure that the air inlet 14 is always on the windward side, that is, the air inlet 14 is in a positive pressure area, and ensure that the air outlet 15 It is always on the leeward side, that is, the air outlet 15 is in a negative pressure area, thereby increasing the suction effect of the system and strengthening natural ventilation.

The utility model is further described below by application principle:

During the day, solar radiation shines through the transparent glass cover plate 1 on the heat collecting plate 3 coated with absorbent paint, and the temperature of the heat collecting plate 3 rises and is re-released into the air in the air channel 2 through convective heat exchange, and the air is heated When the temperature rises, when the air temperature in the air channel 2 exceeds the outdoor air temperature, due to the density difference between the indoor and outdoor air, the air in the air channel 2 rises and flows out from the air outlet 15 of the system, while the air inlet 14 is continuously sucked in by air. Supplement, so as to realize solar thermobaric ventilation.

When there is wind outdoors, the air guide device 10 on the wind-induced rotary wind inlet cap 9 can make the air inlet 14 always catch the dominant wind direction and make the air inlet 14 be in the positive pressure area (windward side) of the incoming flow, and utilize the dominant wind direction to The dynamic pressure formed on the windward side generates a driving force, and the outdoor fresh air enters the building; at the same time, the wind guide device 10 on the wind-induced rotating exhaust cap 8 keeps the exhaust port always in the vortex negative pressure area on the leeward side (the leeward side ), the dirty air in the building can be pumped out of the building by using the suction force formed by the eddy current negative pressure area on the leeward side, thus realizing the wind pressure ventilation in the building room.

The utility model comprehensively utilizes solar energy and wind energy to enhance the natural ventilation capacity of the building, overcomes the deficiency of using a single energy source, ensures the stable operation of the system, effectively enhances the indoor ventilation effect, improves the air quality, does not need to consume electric energy, and has a good energy-saving effect. Moreover, the system has simple structure, convenient installation and maintenance, can be widely used in natural ventilation systems such as residential buildings and industrial workshops, and has broad development prospects.

Claims (4)

1. building natural ventilation system that does not have energy consumption, it is characterized in that: comprise clear glass cover plate (1), be installed on thermal-arrest plate (3) on the building south orientation exterior wall, be formed at the air duct (2) between clear glass cover plate (1) and the thermal-arrest plate (3), the wind induction type rotation air intake cap (9) that is arranged at the wind induction type rotation air draft cap (8) at air duct (2) top and is installed on a building side by north, described air duct (2) is communicated with building interior space, and described wind induction type rotation air intake cap (9) is communicated with building interior space.

2. the building natural ventilation system of no energy consumption as claimed in claim 1, it is characterized in that: described wind induction type rotation air draft cap (8) and wind induction type rotation air intake cap (9) include bottom base (13), rotating main body (11), connect the bearing wheel hub (12) of bottom base (13) and rotating main body (11) and be installed on air ducting (10) on the rotating main body (11), described wind induction type rotation air intake cap (9) is provided with air inlet (14), and described wind induction type rotation air draft cap (8) is provided with exhaust outlet (15).

3. the building natural ventilation system of no energy consumption as claimed in claim 2 is characterized in that: also comprise the insulation material layer (5) that is installed on building south orientation inner side of outer wall.

4. the building natural ventilation system of no energy consumption as claimed in claim 3 is characterized in that: the downside of described air duct (2) is provided with the following ventilating opening of band valve (6), and this time ventilating opening is communicated with air duct (2) with building interior space.

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