JPS62147242A - Dehumidifying method for building - Google Patents

Abstract

PURPOSE:To enable reliable dehumidification of the interior of a building, by a method wherein, only when relative humidity in a building is increased to high than a specified value and temperature in the building is higher than temperature outside the building, a ventilating means is driven to introduce air outside the building. CONSTITUTION:Only when relative humidity (x) in a building, being the measuring result of a relative humidity gauge 12, is higher than a specified value (k) and temperature Tin in the building, being the measuring result of a thermometer 13, is higher than temperature Tout outside the building, being the measuring result of a thermometer 14, a controller 15 drives a ventilating fan 11 to introduce air outside the building to the interior of the building. Further, a ventilating port 16 enables an amount of air in the building equivalent to an amount of air introduced in the building through driving of the ventilating fan 11, to be exhausted to the outside of the building. Since the ventilating fan 11 is driven and controlled after it is confirmed that the wet state of air outside the building is a state suitable to dehumidification of air in the building is a state suitable to dehumidification of air in the building, ventilation enables reliable dehumidification of the interior of the building.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for dehumidifying buildings.

[Prior Art] Generally, when the humidity in the interior space of a building becomes excessively humid, dew condensation occurs on the wall surface, resulting in disadvantages such as shortening the life of the building.

Therefore, a method of dehumidifying buildings has been proposed as described in Japanese Patent Application Laid-Open No. 148941/1993. In this dehumidification method, a ventilation fan is installed to communicate the attic space with the outside, and the ventilation fan is driven only when a hygrometer installed under the floor detects a predetermined humidity level. and remove moisture from the attic space.

[Problems to be solved by the invention]- However, in the conventionally proposed dehumidification methods described above, it is difficult to determine whether the humidity state of the air outside the building is suitable for dehumidifying the air inside the building. No consideration was given. Therefore, when air with a humidity level north of a certain level is exhausted inside the building by driving a ventilation fan, and a corresponding amount of air from outside the building is taken into the building, a new The absolute humidity of the air taken into the building is higher, and as a result, there is a risk that humidity will be drawn into the building through ventilation, making the building even more overhumidified.

The object of the invention is to reliably dehumidify the inside of the building by ventilation of the inside of the building +11].

[Means for Solving Problems 1] The present invention provides a ventilation means for communicating the indoor space and the outdoor space to ventilate the indoor space, and also arranges a relative hygrometer and a thermometer inside the building. is a method of dehumidifying buildings by placing thermometers outside the building, and the above ventilation is performed only when the relative humidity inside the building is above a predetermined value and the temperature inside the building is higher than the temperature outside the building. This device drives the means to introduce air from outside the building into the building.

[Function 1] According to the present invention, it is detected whether or not the air in the building is in a state of overhumidity equal to or higher than a predetermined certain value based on the measurement result of a relative hygrometer placed in the building. Furthermore, if the air inside the building is overhumidified as a result of the above detection, the measurement results from the air temperature meters placed inside and outside the building indicate that ventilation is required only when the temperature inside the building is higher than the temperature outside the building. The means is driven to take in air from outside the building into the building and exhaust air from inside the building to the outside of the building. Here, the air newly taken into the building has a lower temperature and therefore lower absolute humidity than the air already existing in the building, making it possible to lower the humidity level 71 inside the building.

In other words, in case of non-emergence 1, confirm that the humidity of the air outside the building is suitable for dehumidifying the air inside the building,
It drives and controls the ventilation means, making it possible to reliably dehumidify the inside of the building by ventilating the space inside the building.

[Example 1 FIG. 1 is a schematic diagram showing an example of the present invention. 10 is a building, 11 is a ventilation fan as a ventilation means, 12 is a relative hygrometer, and 13.14 is a thermometer. That is, in this embodiment, a ventilation fan 11 is provided to connect the space inside the building and the space outside the building to ventilate the space inside the building, and a relative hygrometer 12 and a thermometer 13 are arranged inside the building. A thermometer 14 is arranged.

Further, 15 is a controller. The controller 15 drives and controls the ventilation fan 11 according to the flowchart shown in FIG. That is, the controller 15 determines that the relative humidity X in the building, which is the measurement result of the relative hygrometer 12, is at least a predetermined constant value,
And only when the temperature inside the building, Tin, which is the measurement result of the thermometer 13, is higher than the temperature outside the building, Tout, which is the measurement result of the thermometer 14, the ventilation fan 11 is driven to introduce air from outside the building into the building. is possible. Note that 16 is a ventilation port, which allows an amount of air in the building corresponding to the amount of air introduced into the building by driving the ventilation fan 11 to be discharged to the outside of the building.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, the relative hygrometer 12 placed inside the building
Based on the measurement results, it is detected whether or not the air inside the building is overhumidified to a predetermined value or higher. Furthermore, if the air inside the building is overhumidified as a result of the above detection, only when the temperature inside the building is higher than the temperature outside the building according to the measurement results of each thermometer 13.14 placed inside and outside the building. Drive the ventilation fan 11 to take air from outside the building into the building,
Exhaust the air inside the building to the outside of the building. Here, the air newly taken into the building has a lower temperature and therefore lower absolute humidity than the air already existing in the building, making it possible to lower the humidity state inside the building.

That is, in the above embodiment, the humidity level ff of the air outside the building,
This function drives and controls the ventilation Ell after confirming that the air is in a state suitable for dehumidifying the air inside the building, making it possible to reliably dehumidify the inside of the building by ventilation of the air inside the building. Furthermore, according to the above embodiment, when the relative humidity inside the building drops by a certain value, the drive of the ventilation fan 11 is stopped, so the humidity inside the building is lowered more than necessary and energy is wasted. Never.

Note that the present invention is more effective in winter when the temperature and humidity outside the building are low and the humidity state of the air outside the building is suitable for dehumidifying the air inside the building.

Furthermore, in carrying out the second invention, warm air inside the building is exhausted during the winter season when it is more effective as described above, and cold air newly enters the building, which impedes the heating effect. In order to avoid such inconvenience, it is preferable to use a conspicuous heat exchanger 21 as shown in FIG. 2 as the ventilation fan 11.

The sensible heat exchanger 21 includes an exhaust passage 21A and an air supply passage 21.
A heat exchange partition 21C is provided between B and 21C, which allows only heat to pass through but not water vapor, and transfers the heat of the warm air discharged from the building to the cold air introduced into the building, reducing the temperature inside the building. It is possible to prevent deterioration of the condition.

Furthermore, in carrying out the present invention, ventilation means may be turned on or o.
The relative humidity predetermined as one of the conditions for increasing the Ventilation fan 11 is driven on condition that the temperature inside the building is higher than the temperature outside the building when the indoor relative humidity X is 1 or more. On the other hand, the ventilation fan 11 is stopped when the above-mentioned relative humidity X becomes 2 or less.

Further, the present invention is widely applicable to dehumidifying not only indoors but also attic spaces, in-wall spaces, under-floor spaces, and the like.

[Effects of the Invention J Below]-, the present invention provides a ventilation means for communicating the indoor space and the outdoor space to ventilate the indoor space, and also installs a relative hygrometer and a thermometer inside the building. A method of dehumidifying buildings by placing thermometers outside the building, and only when the relative humidity inside the building is above a predetermined certain level and the temperature inside the building is higher than the temperature outside the building. The ventilation means is driven to introduce air from outside the building into the building.

Therefore, it becomes possible to reliably dehumidify the inside of the building by ventilation of the space inside the building.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention, FIG. 2 is a sectional view showing a sensible heat exchanger, and FIG. 3 is a flowchart showing the control procedure of the present invention. 10... Building, 11... Ventilation fan, 12... Relative humidity meter, 13.14... Thermometer. Patent applicant Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Hiroshi Figure 1 Figure 2

Claims (1)

[Claims] (1) Provide ventilation means to communicate the space inside the building with the space outside the building to ventilate the space inside the building, and also place a relative hygrometer and thermometer inside the building, and a thermometer outside the building. This is a method of dehumidifying buildings, in which the ventilation means is driven only when the relative humidity inside the building is above a predetermined value and the temperature inside the building is higher than the temperature outside the building, and the air outside the building is removed. A building dehumidification method introduced inside the building.