JPH02219938A - Heat exchanging and ventilation facility - Google Patents

Abstract

PURPOSE:To perform a local air discharging and perform a well-balanced operation of a heat exchanging and ventilation facility through an interior air circulation by a method wherein an air feeding passage for use in feeding heat exchanged air supply is formed as the local air discharging operation is carried out. CONSTITUTION:Supplied air A circulates in a room and the air is discharged as a discharging air B. At this time, a waste heat is recovered by a heat exchanger 1 with the supplied air A. In turn, locations having severe stained states such as a toilet and a kitchen or the like are provided with a ventilation fan 6 such as a range hood or the like so as to perform a local discharging C. with such an arrangement as above, an air blowing fan 7 and an air blowing duct 8 for forming an air flow are provided in a separate system differing from the air blowing fan 2. The air blowing duct 8 may feed the air from the heat exchanger 1 to the location by the air blowing fan 7 where the ventilation fan 6 is mounted. With this arrangement, the local air supplying air E separate from the interior circulating air A is concentrically and locally supplied so as to keep an air balanced condition when the local air discharging operation is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to heat exchange ventilation equipment. More specifically, the present invention relates to a heat exchange ventilation system that prevents the intrusion of outside air and an increase in air conditioning load due to local exhaust ventilation, and maintains a balanced room temperature.

(Prior Art) In recent years, the airtightness and heat insulation properties of ordinary residential buildings have been significantly improved due to improvements and improvements in sash structures and heat insulation structures. In addition, in line with this trend, ventilation/cooling/heating equipment has been developed that efficiently heats, cools, and air-conditions the inside of a building by utilizing convection circulation of air throughout the indoor area, and also provides ventilation with the outside.

In addition to improving airtightness, attention has also been paid to ventilation throughout the room, and in this case too, extensive efforts have been made to improve air circulation throughout the room. One such attempt is a heat exchange ventilation system as shown in FIG. 4, for example.

This equipment sucks in fresh air from outside using a blower fan (a), heats it by exchanging heat with indoor exhaust air using a heat exchanger (b), and then supplies the air to each room in the room. The supplied air is also circulated to corridors, stairs, etc., and for example, as shown in Figure 4, it is passed through the exhaust duct (work) from the inlet (two) on the ceiling of the first floor and the floor of 21!1. and blower fan (o)
The heat is exchanged through the air and exhausted to the outdoors.

For example, heat exchange ventilation equipment, which can be exemplified in this way, is attracting attention for its practical use in supplying fresh air to the entire indoor area, exhausting contaminated air, and utilizing heat from the exhaust air. It is also attracting attention from the total heat exchange method as a method of heat exchange.

In addition, the system shown in Figure 5 has been considered as an air circulation method for all-room heat exchange ventilation and heating. The air is blown into each room from the air outlet (ri) installed in the ceiling on the first floor and the floor on the second floor through the ventilation duct (ki), and is circulated from the room through indoor spaces such as the hallway and the TW beating room, and then returns to the heating bag! It has been generally considered to return to (power). In addition, it has been considered to install a heat exchanger to exhaust air from a room where the air is extremely polluted, such as a toilet, and at the same time exchange heat with outside air and lead it to the room or to a heating device.

For example, as shown in Figures 4 and 5, conventional heat exchange ventilation equipment utilizes convection circulation of air throughout the indoor area to reduce the air conditioning load and reduce the number of piping. Moreover, it is attracting attention for practical purposes as it effectively prevents condensation inside buildings and removes air pollution through regular ventilation.

(Problems to be Solved by the Invention) However, the reality is that there are still problems to be improved regarding these conventional heat exchange ventilation equipment.

One problem is that it is difficult to maintain the air conditioning balance due to indoor local exhaust ventilation. Even in the examples shown in Figures 4 and 5, for example, as shown in Figure 6, ventilation fans are usually installed in toilets, kitchens, etc., and heat exchangers and blower fans are installed. Apart from the indoor air circulation flows (A) and (B) that are formed indoors through (S), ventilation to the outdoors (C) is performed independently. When exhaust (C) is performed using such a ventilation fan at a large air volume, for example, 600 to 1000 m3/hour, the heat exchanger (
The balance between air supply (A') and air supply (A') will be disrupted. In many cases, outside air is leaked through gaps in buildings etc.
- The indoor air conditioning load increases, even if only temporarily, and the load required to eliminate the difference between the temperature of the cold or warm air outside and the indoor circulating air increases.

Therefore, a measure is needed to maintain the room temperature at a predetermined level without disrupting the balance with indoor air circulation accompanying local exhaust ventilation and without increasing the air conditioning load.

This invention was made in view of the above circumstances,
The purpose of the present invention is to improve the shortcomings of conventional heat exchange ventilation equipment and to provide an improved heat exchange ventilation equipment that can operate the heat exchange ventilation equipment in a well-balanced manner by indoor air circulation as well as local exhaust.

(Means for Solving the Problems) The present invention solves the above-mentioned problems by providing a heat exchange ventilation system that uses an indoor space as an air circulation path, and provides an air supply path that guides heat exchange supply air to a local area in accordance with local exhaust ventilation. To provide heat exchange ventilation equipment characterized by forming a.

(Function) In the equipment of this invention, is it normal air? i! Separately from the i-ring path, a ventilation path is formed that directly guides the outside air taken in from the heat exchanger to the local exhaust area.

Therefore, even if local exhaust is performed, the outside air recovered from the exhaust heat in the heat exchanger can be supplied to the local area without causing outside air to enter through gaps or the like. It is possible to maintain an appropriate room temperature balance without increasing the air conditioning load due to direct entry of outside air as in the past.

(Example) Next, the heat exchange ventilation equipment of the present invention will be described in more detail with reference to the attached drawings.

FIG. 1 shows an example of the present invention corresponding to FIG. 6.

As shown in this example, the equipment of the present invention includes a heat exchanger (1) installed at an appropriate location indoors, and a blower fan (2).
It has an exhaust fan (3), a blower duct (4), and an exhaust duct (5), and performs heat exchange ventilation by forming an indoor air circulation path as shown in FIGS. 4 and 5, for example.

The supply air (A) circulates indoors and is discharged to the outside as exhaust air (B). At this time, the heat exchanger (1) is
Exhaust heat recovery is performed.

On the other hand, install ventilation fans (6) such as range hoods in areas with significant air pollution, such as toilets and kitchens, and use local exhaust ventilation (C).
We are making sure that this is done.

In this configuration, in the case of the equipment of the present invention, a blower fan (7) and a blower duct (8) are provided which form an air flow separate from the blower fan (2). The ventilation duct (8) transfers the air from the heat exchanger (1) to the ventilation fan (7).
) to the local area where the ventilation fan (6) is installed.This allows the air supply (E) for local air supply, which is different from the air supply air (A) for indoor circulation, to be concentrated and supplied to the local area. Maintain air balance during exhaust.

At this time, along with the operation of the ventilation fan (6), the ventilation fan (7)
The command system of the switch (9) can be linked so that the switch (9) is operated.

FIG. 2 shows the above example as an example of indoor arrangement. A heat exchanger (1), a blower fan (2) (7), an exhaust fan (3), and a duct system are installed in the attic space. Of course, the specific arrangement is not limited to this example.

It goes without saying that the present invention can also be applied to the equipment shown in FIGS. 4 and 5.

FIG. 3 shows another example of the invention. In this example, when local exhaust (C) is performed by a ventilation fan (6) using a switching damper or an air volume adjustment damper (10) while using a common ventilation fan (2),
It has a configuration in which all or part of the air supply from the heat exchanger (1) is sent as local air supply (E). Also in this case,
A command system of the switch (9) can be configured so that the ventilation fan (6) and the damper (10) work together.

After the local exhaust is finished, the damper (10) is used to circulate indoor air using normal air supply (A>).

In these examples, various aspects are possible for the individual elements of the equipment, and the configuration of the duct system can also be appropriately determined while taking into consideration the structure of the house and the like.

(Effects of the Invention) As explained in detail above, according to the present invention, there is no increase in air conditioning load due to local exhaust, and it is possible to prevent outside air from entering through gaps, etc., and maintain an appropriate room temperature balance.

There will be an appropriate balance between local exhaust ventilation and ventilation through air circulation.

[Brief explanation of the drawing]

FIG. 1 is a structural layout diagram showing an example of the present invention, and the second section is a sectional view showing the arrangement in a house. FIG. 3 is a structural layout diagram showing another example of the present invention. 4 and 5 are cross-sectional views showing conventional heat exchange ventilation equipment, and FIG. 6 is a structural layout diagram showing an example of conventional local exhaust ventilation. 1...Heat exchanger 2...Blower fan 3...Exhaust fan 4...Blower duct 5...Exhaust duct 6...Ventilation 7...Blower fan 8...Blower duct 9. ...Sweet 10...dang

Claims (1)

[Claims] (1) A heat exchange ventilation system that uses an indoor space as an air circulation path, and is characterized by forming a ventilation path that guides heat exchange supply air to the local area in conjunction with local exhaust air.