JPH05223307A - Ventilating device - Google Patents

Abstract

PURPOSE:To provide a ventilating device wherein heat or cooled air in a tightly closed space in a room wherein cooling or heating is performed or in a bath room is recovered completely and suction air and exhaust air are not mixed together. CONSTITUTION:In a ventilating device, a suction air passage 2 and an exhaust passage 4 are provided in a pipe or a duct comprising insulating material or material having bad thermal conductivity. The passage 2 and the passage 4 are separated by an separating plate 3 comprising material having high thermal conductivity at the boundary therebetween and the passage 2 and/or the passage 4 are connected to a suction device and/or an exhaust device such as a fan 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device for an air-conditioned room, bathroom, toilet, etc.

[0002]

2. Description of the Related Art As a conventional ventilation method, a hole is made in an outer wall to attach a ventilation fan, and an air flow is generated by rotation of a fan driven by a motor to perform exhaust or intake, or a size similar to that of the ventilation fan. There is a method of performing forced intake / exhaust simultaneously at the same time and performing heat exchange between intake and exhaust to recover heat.

[0003]

However, in the ventilation method using the ventilation fan, since the outside temperature air flows into the room,
The effect of cooling or heating is reduced. Therefore, ventilation is not always performed during cooling and heating, and particularly in a heater such as a fan heater that discharges combustion gas into the room, indoor air is extremely dirty, which is not good for health. On the other hand, in the latter method of heat exchange, the heat recovery rate is 50% or less, which is not sufficient. Further, since the intake port and the exhaust port are close to each other, the operation is such that the exhausted air is immediately re-inhaled and the inhaled air is immediately re-exhausted, for example, the smoke of indoor cigarettes is not easily exhausted. As you can see, the desired behavior is not obtained.

The present invention improves upon the shortcomings of conventional ventilation methods,
(EN) Provided is a ventilation device which enhances exhaust heat recovery efficiency, improves the separation of intake air and exhaust gas, and eliminates the mixing of both.

[0005]

According to the present invention, an intake passage and an exhaust passage are provided inside a pipe or duct made of a heat insulating material or a poor heat conductor, and the boundary between the intake passage and the exhaust passage is isolated by a good heat conductor. However, the present invention relates to a ventilation device in which the intake passage and / or the exhaust passage are connected to the intake equipment and / or the exhaust equipment.

In the present invention, the pipe or duct made of a heat insulating material or a heat-defective conductor is made of, for example, plastic or its foam material, and the good heat conductor is made of a metal material such as copper or stainless steel. It is preferable that the boundary between the intake passage and the exhaust passage, which is made of a good conductor of heat, be formed in a corrugated shape or the like to increase the area in order to increase the efficiency of heat exchange. A pump, a fan, or the like is used as the intake equipment and / or the exhaust equipment to perform forced intake and forced exhaust. The distribution of the lengths of the intake passage and the exhaust passage is appropriately determined according to the structure of the house. The shape of the passage is not limited to a straight line, but may be bent along the wall surface of the house or may be curved. Further, in the ventilation structure of the present invention, since condensed water may be generated because the intake air or the exhaust gas is cooled, the pipe or duct is inclined, and the ventilation performance is affected in the partition part of the intake / exhaust passage of the outdoor part. It is preferable to allow water to escape by making small holes to the extent that there is no such hole.

[0007]

In this ventilator, heat is exchanged while the exhaust gas passes through the exhaust passage, the exhaust heat is transferred to the intake air in the intake passage, and efficient cooling / heating is performed without escaping heat or cold air in the room.
FIG. 6 shows a qualitative graph of heat exchange. FIG. 6 (a) shows the case where the outside temperature is higher than room temperature in the case of cooling. The intake and exhaust flow rates are the same. The gradients of the exhaust temperature and the intake temperature are determined by the amount of heat conduction of a good conductor of heat that separates the boundary between the intake passage and the exhaust passage. From this curve, the intake air discharged into the room is cooled by the exhaust gas,
Only ₁ higher temperature. If the duct length L is sufficiently long, Δ
T ₁ approaches 0, and cold air can be almost completely recovered.

FIG. 6B shows heating, in which the outside air temperature is lower than room temperature. The heat exchange opposite to the case of the above (a) is performed, and the intake air temperature becomes lower than the exhaust temperature by ΔT ₂ . If L is made sufficiently long, ΔT ₂ approaches 0, and exhaust heat can be almost completely recovered. Since the intake port and the exhaust port have different directions both indoors and outdoors or are provided at different positions, the intake air and the exhaust air do not mix.

[0009]

EXAMPLES Next, the present invention will be specifically described by way of examples. Embodiment 1 FIG. 1 is a side view showing a ventilation device according to an embodiment of the present invention,
Reference numeral 1 denotes a plastic duct which is attached to a wall 10. An intake passage 2 and an exhaust passage 4 are provided at a central portion of the duct 1 through a copper tubular separator 3, and a fan driven by a motor is provided at an outlet of the exhaust passage 4. 5 is attached for forced intake and exhaust. As shown in FIG. 2 which is a sectional view taken along the line AA of FIG. 1, the separator 3 is formed in a corrugated shape to increase the area of the heat exchange portion. The intake port 6 and the exhaust port 9 outside the room, and the intake port 7 and the exhaust port 8 inside the room so that the intake air and the exhaust gas do not mix.
Are separated from each other as much as possible. Further, the duct 1 is inclined so that the condensed water can be easily discharged, and the outdoor portion is slightly lower than the indoor portion. In the figure, when the fan 5 is operated, the outdoor air is sucked in through the intake port 6 and discharged through the intake passage 2 into the room through the intake port 7. On the other hand, the air in the room is sucked from the exhaust port 8, passes through the exhaust passage 4, and is discharged out of the room from the fan housing portion 5a having the fan 5 and having a diameter larger than that of the exhaust passage 4.

Embodiment 2 FIG. 3 is a view showing a ventilation device according to another embodiment of the present invention.
(a) is a plan view and (b) is an enlarged view of a portion B of (a). In the figure, 11 is a duct made of a rectangular heat insulating material,
The indoor and outdoor ends separated by the wall 10 have a structure in which the intake and exhaust ports face in opposite directions. The intake passage 12 and the exhaust passage 14 are separated by a metal separator plate 13, and the fins 13a made of metal further increase the area of the heat exchange portion,
It is designed to promote heat exchange between intake air and exhaust air. Further, forced intake / exhaust fans 15a and 15b are attached to the outdoor intake port 16 and exhaust port 19. Fan 15a
The rotation directions of 15b and 15b were the same. Reference numeral 20 denotes a filter which prevents the heat exchange parts 13 and 13a from being contaminated and prevents the heat exchange efficiency from being lowered.

Embodiment 3 FIGS. 4A and 4B are views showing a modification of the structure of FIG. 3, in which FIG. 4A is an elevation view and FIG. 4B is an enlarged sectional view of an intermediate portion of the duct 11. The outside portion of the duct 11 is lengthened and bent to form a wall-contact structure, thereby preventing a decrease in the utilization factor of the room and deterioration of design. The fans 15c and 15d (not shown) are installed indoors. Further, as shown in FIG. 4 (b), a metal separator 13 for separating the intake passage 12 and the exhaust passage 14 is formed into a corrugated shape to increase the area of the heat exchange portion.

Embodiment 4 FIG. 5 shows a ventilation device according to another embodiment of the present invention,
(a) is a front view, (b) is a CC sectional plan view of (a).
The intake passage 22 and the exhaust passage 24, which are separated by the metallic separator plate 23, are formed in a spiral shape, and the outdoor portion is made flat. Boundaries for securing the outside portion other than the intake port 26 and the exhaust port 29 and the intake passage 22 and the exhaust passage 24 are formed by the duct 21 made of a heat insulating material.
Although not shown, the separator 23 is provided with a small hole for discharging condensed water that does not affect ventilation performance. The structure on the indoor side is the same as in FIG. The rotation directions of the forced intake / exhaust fans 25c and 25d are normally opposite to each other so that they can rotate in the same direction in order to quickly bring the room temperature close to the outside temperature.

[0013]

The ventilation device of the present invention has the following effects. (1) Exhaust gas from a room or space that is being cooled or heated exchanges heat while passing through the exhaust passage, and exhaust heat is transferred to the intake air in the intake passage, so that heat or cold air in the room is not escaped and efficient cooling and heating is performed. You can (2) Since the exhaust port or the intake port has a different direction both indoors and outdoors, or is located at a different position, intake air and exhaust air do not mix.

[Brief description of drawings]

FIG. 1 is a side view showing a ventilation device according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of the ventilation device in FIG.

3A and 3B are views showing a ventilation device according to another embodiment of the present invention, in which FIG. 3A is a plan view and FIG. 3B is an enlarged view of a portion B of FIG. 3A.

4A and 4B are views showing a ventilation device according to another embodiment of the present invention, in which FIG. 4A is an elevation view and FIG. 4B is an enlarged view of an intermediate portion of the duct in FIG.

FIG. 5 shows a ventilation device according to another embodiment of the present invention,
(a) is a front view, (b) is a CC sectional plan view of (a).

FIG. 6 is a graph illustrating the relationship between the duct length and the air temperature of the ventilation device of the present invention, where (a) is for cooling and (b) is for heating.

[Explanation of symbols]

1 ... Duct, 2 ... Intake passage, 3 ... Separator plate, 4 ... Exhaust passage, 5 ... Fan, 6, 7 ... Intake port, 8, 9 ... Exhaust port, 1
0 ... Wall, 11 ... Duct, 12 ... Intake passage, 13 ... Separator, 14 ... Exhaust passage, 15 ... Fan, 16, 17 ... Intake port, 18, 19 ... Exhaust port, 20 ... Filter, 21 ... Duct, 22 ... intake passage, 23 ... separator, 24 ... exhaust passage, 25 ... fan, 26, 27 ... intake, 28, 29 ...
exhaust port

Claims (1)

[Claims] 1. A pipe or duct made of a heat insulating material or a poorly heat-conductive conductor is provided with an intake passage and an exhaust passage, and the boundary between the intake passage and the exhaust passage is isolated by a good conductor of heat, and the intake passage and / or the exhaust passage are exhausted. A ventilation system in which a passage is connected to an intake system and / or an exhaust system.