JPH02178546A - Dew condensation preventive apparatus - Google Patents

Abstract

PURPOSE:To reduce the running cost of the title apparatus, and to uniformalize temperature distribution in a room during a heating operation by circulatingly blowing indoor air through small bores provided in an air duct and making a temperature on a window surface or a wall surface close to the temperature of indoor air. CONSTITUTION:The title apparatus is equipped with a first temperature detector 3 disposed in the inlet passage 2 of a blower 1, a second temperature detector 5 disposed on the inner surface of a window frame 4 in a room outside the blower 1, an air duct 7 connected to the outlet passage 6 of the blower 1, multiple small bores 8 formed downwardly in the air duct 7, and a controlling device 9 that operates the blower 1 when a temperature Tb detected by the second temperature detector 5 is lowered to a preset temperature Td or below with respect to a temperature Ta detected by the first temperature detector 3. In addition, an air cleaning filter 10 facing the indoor side is disposed in the inlet passage 2 of the blower 1, and the air duct 7 is connected to the outlet passage 6 via a muffler 11. The small bores 8 of the air duct 7 are provided so that air blowing through the small bores flows along the inner surface of window glass, and the second temperature detector 5 is disposed on the inner surface of the window frame 4 to detect a temperature on the dewing surface of the window glass.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a dew condensation prevention device for preventing dew condensation from forming on indoor windows and walls.

Conventional Technology Conventionally, when heating a room using a gas or oil heater, moisture contained in the indoor air condenses on windows and walls that are in direct contact with the outside and flows down to the bottom, causing the moisture to form on the floor and window sills. There was a problem with water droplets accumulating on the floor and corroding the floor and window frames.

Problems to be Solved by the Invention In order to solve these conventional problems, dehumidifiers and heat pump air conditioners are sometimes used to dehumidify the air in the entire room. , a high capacity dehumidification performance is required, and a large amount of electric power is required. As a result, there were problems in that the device became large and the running cost increased.

The present invention solves these problems by making it possible to significantly reduce running costs, and to improve comfort by uniformizing the indoor temperature distribution during heating. This is the purpose.

Means for Solving the Problems In order to solve the above problems, the present invention includes an air blower, a first temperature detection device provided in the air passage of the air blower, and a second temperature detection device provided in a room outside the air blower. a detection device;
The temperature Tb detected by the temperature detecting device of the temperature detecting device of the blow pipe connected to the blowing passage of the blower, the large number of blow holes provided in the blow pipe, and the temperature detecting device of the detailed cylinder 2 is determined by the temperature detecting device of the first temperature detecting device. The controller includes a control device that operates the blower when the detected temperature Ta falls below a preset temperature Td.

Function: With the above-described configuration, the present invention blows out indoor air from the small holes in the blower pipe, circulates the indoor air around the windows and walls on the indoor side, and brings the temperature of the windows and walls close to the temperature of the indoor air, thereby preventing dew condensation. can be prevented. Moreover, since the start of condensation can be detected by two temperature detection devices, condensation can be prevented by operating the blower immediately before the start of condensation, eliminating the need to constantly operate the blower.
Running costs can be significantly reduced.

In addition, since the high temperature air in the upper part of the room is circulated along the walls to the lower part of the room, the temperature distribution in the room during heating can be made uniform and comfort can be improved.

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings.

1 to 3, the dew condensation prevention device of this embodiment includes a blower R1, a first temperature detection device 3 installed in the suction passage 2 of the blower 1, and a window frame 4 in the room outside the blower 1. a second temperature detection device 5 provided on the inner surface of the air blower l111;
The air pipe 7 connected to the air outlet fIPt6, the large number of small holes 8 formed downward in the air pipe 7, and the detected temperature Tb of the second temperature detection device 5 are connected to the first temperature detection The configuration includes a control v4 device 9 that operates the blower 1 when the temperature Ta detected by the device 3 falls below a set temperature Td. Further, an air purifying filter 10 is provided at the suction [12] of the air blower 11 facing toward the indoor side, and a blower pipe 7 is connected to the blower passage 6 via a muffler 11.

As shown in FIGS. 2 and 3, the dew condensation prevention device 12 having the above structure is installed at the top of the window 13, and the air pipe 7 is connected to the window frame 4.
Piped along the top. At this time, the small hole 8 of the air pipe 7
are installed so that the blowing air flows along the inner surface of the window glass 14. Further, the second temperature detection device 5 is installed on the inner surface of the window frame 4 to detect the temperature of the dew condensation surface. In cases such as aluminum sashes, the temperature of the window frame 4 and the window glass 14
It is considered that the temperatures of the windows are almost the same, and by detecting the temperature of the window frame 4, it is possible to detect the temperature of the window glass 14, which is the main surface of dew condensation.

In such a configuration, the first temperature detection device 3 detects the indoor temperature Ta, and the second temperature detection device 5 detects the temperature Tb of the window glass 14. Then, by arbitrarily determining the relative humidity H on the indoor side, the dew point temperature Td at which dew condensation starts is determined based on the indoor temperature Ta and the relative humidity H. Here, the operation of the air blower at is started immediately before the temperature Tb of the window glass 14 becomes lower than the dew point temperature Td to prevent the temperature Tb of the window glass 14 from falling lower than the dew point temperature Td, thereby preventing dew condensation. . By detecting the temperature and controlling the air blowers all in this way, air blower R1
There is no need to run the system all the time, and running costs can be kept to a minimum.In this device, the relative humidity was arbitrarily determined, but if the relative humidity could be detected with a humidity detection device, it would be possible to determine when condensation occurs. It is clear that it is possible to detect more accurately.

In addition, the blown air is warm air from the upper part of the room, and is effective in raising the temperature of the window glass 14.
By circulating the air from the upper part of the room to the lower part as shown by the arrow in FIG. 2, the temperature distribution of the indoor air becomes uniform, which has the effect of improving comfort.

Further, since the air purifying filter 10 is provided in the suction passage 2 for the air blower n1, the indoor air can be purified and the small holes 8 of the air pipe 7 can be prevented from being clogged. In addition, since a silencer 11 is provided in the blower passage 6 of the blower 1, the noise during operation of the device is reduced.
Even during late night use when condensation is likely to occur, low-noise operation can be performed without disturbing the operating noise.

Although the prevention of condensation on windows has been described above, it can be easily inferred that this device can similarly prevent condensation on walls in the room and behind furniture.

Effects of the Invention As described above, according to the present invention, since the start of condensation can be detected using two temperature detection devices, condensation can be prevented by operating the blower immediately before the start of condensation, and the blower can be constantly operated. There is no need to drive, and running costs can be significantly reduced. In addition, since high-temperature air from the upper part of the room is circulated to the lower part of the room, the temperature distribution within the room during heating can be made uniform, improving comfort.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side sectional view of a dew condensation prevention device, FIG. 2 is a side sectional view showing the dew condensation prevention device installed, and FIG. 3 is a side sectional view showing the dew condensation prevention device installed. FIG. DESCRIPTION OF SYMBOLS 1...Blower, wind fan, 2...Suction passage, 3...First temperature detection device, 5...Second temperature detection device, 6...
Blowout passage, 7...Blow pipe, 8...Small hole, 9...Control device.

Claims (1)

[Claims] 1. A blower, a first temperature detection device provided in the air passage of the blower, and a second temperature detection device provided in a room outside the blower.
a temperature detection device, a blow pipe connected to the blowing passage of the blower, a large number of small blow holes provided in the blow pipe, and a detected temperature Tb of the second temperature detecting device; A dew condensation prevention device comprising: a control device that operates a blower when the temperature Ta detected by a temperature detection device becomes lower than a predetermined temperature Td.