JPH0712379A - Ventilation system for heat storage space of building - Google Patents

Abstract

PURPOSE:To obtain a ventilation system for a heat storage space of a building in which comfortableness of a residential space in the building can be improved by ventilating the space only at the time of a high temperature and an air conditioning load in the space can be alleviated. CONSTITUTION:A self-operated ventilation damper unit 5 for sensing a temperature in a heat storage space 3 to be opened when the temperature is a set temperature or higher is installed in a ventilation port 4 of the space 3 of a building. The unit 5 contains wax varying in volume according to a temperature, a damper switching mechanism or shape memory alloy springs 34, 35, and a damper switching mechanism 31 for switching a damper 17 in its drive source. Further, the unit 5 is installed in the port 4, or the port 4 is connected to extended ducts 9, 10 from a supply duct and a return duct 8, and the unit 5 is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attic space of a building such as a hotel or office having an attic space on the uppermost floor, or a heat sink space such as an upper atrium or a toplight, or a house or the like. A ventilation system for a heat storage space of a building for ventilating a heat storage space under the floor (these spaces are collectively referred to as a heat storage space of the building in the present invention), and in particular, a building capable of performing ventilation only at a high temperature It is related to the ventilation system of the heat storage space.

[0002]

2. Description of the Related Art In a building having a heat storage space as described above, the temperature of the heat storage space becomes high especially in summer.
Therefore, there is a problem that the indoor living environment is deteriorated due to the radiation from the ceiling surface to the room, and the cooling load is increased accordingly. Therefore, a method is generally adopted in which a natural ventilation port that normally communicates with the outside air is installed in the heat storage space and the hot air in the heat storage space is removed by natural convection.

[0003]

However, in the case where the natural ventilation port communicating with the outside air is installed in the heat storage space as in the conventional case, although it has an effect of removing the hot air in the heat storage space in the summer, On the contrary, in the winter, cold air from the outside air is drawn into the heat storage space to lower the temperature of the ceiling surface. Therefore, there is a problem that becomes a factor that increases the indoor heating load, and this tendency is particularly remarkable in buildings in cold regions.

The present invention has been made in order to solve the above problems, and in a building having a heat storage space, it is possible to ventilate the heat storage space only when the temperature is high. An object of the present invention is to obtain a ventilation system for a heat storage space of a building, which can improve the comfort of the living space inside the building and can reduce the air conditioning load in the living space.

[0005]

In order to solve the above problems, a ventilation system for a heat storage space of a building according to the present invention detects a temperature in the heat storage space at a ventilation port of the heat storage space in the building. However, it is characterized in that it is equipped with a self-powered ventilation damper device that opens when the temperature is above a set temperature.

Further, the self-powered ventilation damper device is characterized in that it incorporates a wax whose volume expansion changes with temperature and has a damper opening / closing mechanism for opening and closing the damper using the wax as a driving source. .

Further, the above-mentioned self-powered ventilation damper device is provided with a built-in shape memory alloy spring which changes its shape depending on temperature, and is provided with a damper opening / closing mechanism for opening / closing the damper using the shape memory alloy spring as a drive source. It is what

Further, the ventilation port is provided at a plurality of locations on the outer wall of the building, and the self-powered ventilation damper device is installed in the ventilation port.

Further, the ventilation port is connected to an extension duct from a supply duct and a return duct of an air conditioning facility or a mechanical ventilation facility in a building, and the self-ventilation damper device is installed in the ventilation port. To do.

[0010]

Since the ventilation system for the heat storage space of the building according to the present invention is configured as described above, when the temperature in the heat storage space becomes equal to or higher than the set temperature, the self-powered ventilation damper device is opened, Hot air in the heat storage space can be ventilated from the ventilation port. Therefore, when the temperature inside the heat storage space becomes high during summer, the hot air can be ventilated.
When the temperature in the heat storage space is below the set temperature, such as in winter,
Since the self-powered ventilation damper device keeps the ventilation port closed, it is possible to prevent cold air from being drawn into the heat storage space from the outside air.

Further, since the self-propelled ventilation damper device is opened / closed by a damper opening / closing mechanism for opening / closing the damper using a wax whose volume expansion changes according to temperature or a shape memory alloy spring whose shape changes according to temperature as a driving source, It can be operated without the need for power.

Further, in the case of ventilation, when the ventilation port is provided on the outer wall of the building, natural convection directly using the outside air can be used to naturally ventilate the interior of the heat storage space, and the ventilation port has an air conditioning facility inside the building. Alternatively, when the supply duct of the mechanical ventilation equipment and the extension duct such as the return duct are connected, the heat storage space can be forcibly ventilated by the forced ventilation by the air conditioning equipment or the mechanical ventilation equipment.

[0013]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3 are diagrams showing the configuration of a ventilation system for a heat storage space of a building, FIG. 1 is a system configuration diagram in the case of natural ventilation, and FIGS. 2 and 3 are systems of different examples in the case of forced ventilation. 4 and 6 are configuration diagrams of different examples of the self-powered ventilation damper device.

At the back of the ceiling of the living space 2 on the top floor of the building 1, there is a small attic space which serves as a heat storage space 3. Figure 1
In the example of the natural ventilation system shown in, the ventilation port 4 is provided on the outer wall of the building 1 forming the heat storage space 3. In order to enhance the effect of natural ventilation, it is desirable to provide the ventilation openings 4 at least at two or more locations on the diagonal of the outer wall or above and below the space. The ventilation openings 4 have specific configurations shown in FIGS. , A self-propelled ventilation damper device 5 that senses the temperature in the heat storage space 3 and opens when the temperature is above a set temperature
Is installed. Although the self-powered ventilation damper device 5 will be described later, a natural ventilation effect can be further enhanced by using it as a shutter system and increasing the ventilation area of the ventilation port 4.

Further, in the case of a building having air conditioning equipment or mechanical ventilation equipment, in the case of a forced ventilation system in which the heat storage space 3 is ventilated using the supply duct and the retort duct of the building air conditioning equipment or mechanical ventilation equipment, As shown in FIG. 2, extension ducts 9 and 1 extending from the supply duct 7 and the return duct 8 of the air-conditioning equipment or the mechanical ventilation equipment of the building that air-conditions or ventilates the living space 2 or the bus room 6 into the heat storage space 3.
0 is provided, the open end thereof is used as the ventilation port 4, and the self-powered ventilation damper device 5 is installed in the ventilation port 4. in this case,
In order to improve ventilation efficiency, it is necessary to arrange the extension duct 9 extending from the supply duct 7 and the extension duct 10 extending from the return duct 8 at positions as far apart as possible and on both sides of the heat storage space 3. desirable.

FIG. 3 shows another example of the forced ventilation system. This example is similar to that shown in FIG. 2 in that the supply duct 7 and the return duct 8 of the air conditioning equipment or mechanical ventilation equipment of the building are used, but the air supply to the heat storage space 3 is performed in the living space. The extension duct 11 extended from one of the bath chambers 6 to the heat storage space 3 is used to exhaust the heat from the heat storage space 3 through the extension duct 12 extended from the heat storage space 3 to another bath chamber 6. After going to the bath room 6 once, the ventilation duct 8 is used for ventilation, and the extension duct 11 has a structure in which the extension duct 11 extends from the bus chamber 6 and is connected to the extension duct 11. The open ends of the heat storage spaces 12 and 12 into the heat storage space 3 are used as ventilation openings 4, and the above-mentioned self-powered ventilation damper device 5 is installed in the ventilation openings 4. In addition, in the return duct 8 connected in the middle of the extension duct 11, the self-powered ventilation damper device 5
A self-powered ventilation damper device 13 that operates in the opposite direction to that of the above is installed.

In the system shown in FIG. 3, the retinal air in the living space 2 is used to ventilate the heat storage space 3, so there is no need to increase the amount of air blown in the entire system, and the system shown in FIG. It is more economical than. As described above, it is desirable that the extension ducts 11 and 12 are disposed so as to be located on both sides of the heat storage space 3.

Next, the structure of the self-powered ventilation damper device 5 will be described. The one shown in FIG. 4 uses a wax (gel-like viscous material) whose volume expansion changes with temperature, and is provided with a damper opening / closing mechanism 14 which opens and closes the damper using the wax as a driving source. Damper outer cylinder 1 attached to
5, and a damper 17 that is rotatably installed in the damper outer cylinder 15 via a rotary shaft 16 and that opens and closes the damper outer cylinder 15.
A pinion gear 18 attached to one end of the rotary shaft 16, a cylinder 19 installed on the outer circumference of the damper outer cylinder 15, a piston 20 sliding in the cylinder 19, and a wax 21 enclosed in the cylinder 19. A rack 22 connected to the piston 20 and engaged with the pinion gear 18,
It comprises a setting controller 23 for adjusting the initial setting position of the piston 20 by increasing or decreasing the amount of the wax 21 and adjusting the opening / closing temperature of the damper 17, and stoppers 24, 25.

Since the wax 21 expands in proportion to the ambient temperature, the opening area of the damper 17 can be adjusted according to the load. Further, the damper outer cylinder 15 and the damper 17 are round,
It may be of any shape, and if the size is large, a plurality of dampers 17 may be installed so as to interlock with each other.

Similar to the one shown in FIG. 4, the one shown in FIG. 5 uses a wax (gel-like viscous material) whose volume expansion changes with temperature.
8 and the rack 22, a damper opening / closing rod 26 is attached to one end of the rotary shaft 16, and the damper opening / closing rod 26 is attached.
A damper closing spring 27 is connected to one end of the above, and a push stay 28 is provided at the other end, and a piston plate 29 connected to the piston 20 is brought into contact with the push stay 28 to form a damper opening / closing mechanism 30. .

In this embodiment, the wax 21 expands due to the rise in the ambient temperature to move the piston 20, and pushes the push stay 28 to open the damper 17. On the other hand, when the temperature drops and the piston plate 29 returns, the damper 17 is closed by the damper closing spring 27. The open set temperature of the damper 17 can be changed depending on the type of the setting controller 23 or the wax 21.

FIG. 6 shows another embodiment of the self-powered ventilation damper device 5, which uses a shape memory alloy spring whose shape changes with temperature, and uses the same shape memory alloy spring as a drive source to open and close the damper. It is provided with an opening / closing mechanism 31,
A spring mounting stay 32 is attached to one end of the rotary shaft 16, and a pair of shape memory alloy springs 34 and 35 are provided between both ends of the spring mounting stay 32 and the bracket 33. Other configurations are as described above. It is similar to the embodiment.

In this case, when the ambient temperature rises above the set temperature, the shape memory alloy spring 34 becomes a spring shape, and conversely, the shape memory alloy spring 35 changes from a spring shape to a wire shape. Rotates 90 degrees, the damper 17 is opened, and when the ambient temperature becomes lower than the set temperature, the damper 17 is operated by the reverse operation to the above.
Operates to be closed. The set temperature can be arbitrarily changed and adjusted by using a corresponding shape memory alloy spring.

Further, the shape memory alloy spring 34 may be an ordinary coil spring, and in this case, the spring constant needs to be smaller than that of the shape memory alloy spring 35. Further, the fulcrum of these springs 34, 35 and the shape and mounting position of the spring mounting stay 32 can be changed to other parts as long as the above operation is performed, and the damper outer cylinder 15
The shape or the number of dampers 17 to be installed can be appropriately changed within the scope of the above-described embodiment.

As the self-powered ventilation damper device 5, various embodiments can be mentioned as described above, while the self-powered ventilation damper device 13 used in the forced ventilation system shown in FIG. Against damper 17 90
By adopting a configuration in which the ventilation dampers 5 are mounted so as to be displaced from each other, the same one as the self-powered ventilation damper device 5 can be used.

However, according to each of the above-described embodiments, the temperature in the heat storage space 3 rises during the summer and the like, and the damper opening / closing mechanisms 14, 30, 3 in the self-powered ventilation damper device 5 are used.
When the temperature becomes equal to or higher than the set temperature of 1, the damper 17 is rotated and opened by the volume expansion change of the wax 21 or the shape change of the shape memory alloy springs 34 and 35, and the hot air in the heat storage space 3 passes through the ventilation port 4 and then, as shown in FIG. In the example of FIG. 2, natural ventilation is performed by natural convection, and in the examples of FIGS. 2 and 3, forcedly via the supply duct 7 and the return duct 8 and the extension ducts 9, 10, 11, and 12 of the air conditioning equipment or mechanical ventilation equipment of the building. Be ventilated.

On the other hand, when the temperature in the heat storage space 3 is equal to or lower than the set temperature in winter, the self-powered ventilation damper device 5 is closed and ventilation is not performed, and cold air is taken into the heat storage space 3. Therefore, the space 3 functions as a heat storage space. Therefore, the hot air in the heat storage space 3 can be removed in the summer and at the same time the cold air can be prevented from entering the heat storage space 3 in the winter, so that the air conditioning load due to the heat radiation from the ceiling surface to the living space is reduced. Can be prevented from increasing,
The comfort of the living space in the building can be improved, and the power required for air conditioning can be reduced to save energy.

[0028]

As described above, according to the ventilation system for the heat storage space of the building according to the present invention, in the building having the heat storage space, the ventilation in the heat storage space can be performed only when the temperature is high. Therefore, the heat radiation from the ceiling surface can be reduced throughout the year regardless of summer or winter.
Therefore, it is possible to improve the comfort of the living space and save energy by reducing the air conditioning load. Moreover, since no special power source is required for the ventilation system, an economical system can be provided.

[Brief description of drawings]

FIG. 1 is a diagram showing a ventilation system of a heat storage space of a building according to the present invention, and is a configuration diagram showing an example of a natural ventilation system.

FIG. 2 is a diagram showing a ventilation system of a heat storage space of a building according to the present invention, and is a configuration diagram showing an example of a forced ventilation system.

FIG. 3 is a diagram showing a ventilation system of a heat storage space of a building according to the present invention, and is a configuration diagram showing another example of a forced ventilation system.

FIG. 4 is a configuration diagram of a self-propelled ventilation damper device used in a ventilation system for a heat storage space of a building according to the present invention.
Is a longitudinal sectional view, and (B) is a right side view thereof.

FIG. 5 is a configuration diagram of another self-powered ventilation damper device used in the ventilation system of the heat storage space of the building according to the present invention,
(A) is a longitudinal sectional view and (B) is a right side view thereof.

FIG. 6 is a configuration diagram of another self-powered ventilation damper device used for the ventilation system of the heat storage space of the building according to the present invention,
(A) is a longitudinal sectional view and (B) is a right side view thereof.

[Explanation of symbols]

1 Building 2 Living Space 3 Heat Storage Space 4 Ventilation Port 5, 13 Self-powered Ventilation Damper Device 6 Bath Room 7 Supply Duct 8 Retan Duct 9, 10, 11, 12 Extension Duct 14, 30, 30 Damper Open / Close Mechanism 15 Damper Outer Cylinder 16 Rotating shaft 17 Damper 18 Pinion gear 19 Cylinder 20 Piston 21 Wax 22 Rack 23 Setting controller 24, 25
Stopper 26 Damper opening / closing rod 27 Damper closing spring 28 Push stay 29 Piston plate 32 Spring mounting stay 33 Brackets 34, 35 Shape memory alloy spring

Claims (5)

[Claims] 1. A self-ventilation damper device for sensing the temperature in the heat storage space of the building and opening it when the temperature is equal to or higher than a set temperature is provided at a ventilation port of the heat storage space of the building. Ventilation system for the heat storage space of the building. 2. The self-propelled ventilation damper device is equipped with a wax opening / closing mechanism that opens and closes the damper by using the wax as a driving source, which contains a wax whose volume expansion changes according to temperature. Ventilation system for the heat storage space in the building described. 3. The self-powered ventilation damper device includes a shape memory alloy spring that changes shape according to temperature, and a damper opening / closing mechanism for opening / closing the damper using the shape memory alloy spring as a drive source. The ventilation system for the heat storage space of the building according to claim 1. 4. The heat storage space of the building according to claim 1, wherein the ventilation openings are provided at a plurality of locations on the outer wall of the building, and the self-powered ventilation damper device is installed in the ventilation openings. Ventilation system. 5. The ventilation opening is connected to an extension duct from a supply duct and a return duct of an air conditioning equipment or a mechanical ventilation equipment in a building, and the self-ventilation damper device is installed in the ventilation opening. The ventilation system for the heat storage space of the building according to claim 1.