JPS629815B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a blower device that simultaneously enables circulation of indoor air, forced air supply, and forced exhaust air with a single blower, for the purpose of purifying indoor air while ensuring indoor air conditioning. This is what we provide.

In recent years, with the spread of new building materials, the tightness of rooms has improved, making it difficult to replace indoor air with one-sided air supply or exhaust, and simultaneous intake and exhaust ventilation has become necessary. Conventionally, as a device to ventilate a room,
There is a ventilation fan, which is very effective for ventilation purposes. However, there was a drawback that it hindered the effectiveness of indoor heating and cooling. To improve this drawback, a ventilation fan with a built-in total heat exchanger has a complicated equipment configuration and requires two blowers, making it expensive and requiring a large ventilation opening in the wall of the room. The drawback was that construction costs were high. Furthermore, conventional ventilation fans have the disadvantage of poor room temperature distribution because they do not have a function to circulate indoor air. On the other hand, air purifiers that purify the air by circulating indoor air with a ventilation function have been devised, but since they are simply a combination of a simultaneous intake/exhaust ventilation fan and an air purifier, they do not require a total heat exchanger. Similar to ventilation fans with built-in ventilators, the device configuration is complicated and large, and two blowers are required, making it expensive and requiring high maintenance costs.

The present invention uses a single blower to form an indoor air suction passage, an outdoor air supply passage, an indoor discharge passage, and an outdoor exhaust passage. A filter and an exhaust passage formed of a catalyst mainly composed of a composition that absorbs and removes acidic gases such as nitrogen dioxide and sulfur dioxide through an absorption reaction, and which are integrally formed with a temperature/humidity exchange member or a heat conductive material. A filter made of a catalyst that absorbs and removes carbon monoxide, in which a precious metal is supported on a cured composition, is installed in the air flow path, making it possible to simultaneously purify and circulate indoor air and provide simultaneous supply and exhaust ventilation. To provide an air blower that purifies indoor air without changing the indoor air conditioning condition and maintains the oxygen concentration of the indoor air.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a cross-sectional view of the air blower of the present invention attached to a wall. Figure 2 is a front sectional view, Figure 3
The figure is a partial view showing the configuration of the air supply and exhaust passage in detail. 1, 2, and 3, 1 is a box body attached to the surface of a wall 2, and an impeller 3, a motor 4 that drives the impeller 3, and a fan suction port 5 are opened. It has a built-in fan casing 6. In addition, the box body 1 is provided with an indoor air intake port 8 in which a filter 7 formed by stacking a dust removal filter and a filter whose main component is activated carbon is disposed, and an outlet port 10 into the room in which a CO catalyst filter 9 is disposed. ing. Reference numeral 11 designates an outside air supply passage, and a filter 12 in which a dust removal filter and a NOx catalyst filter are laminated is positioned in the passage, both ends of which are open in the flow direction, and the fan discharge passage 13 is penetrated to form a fan casing 6. A slit-shaped outside air supply port 14, which is an opening at one end of the wall, is provided in the wall. Reference numeral 15 denotes an exhaust passage to the outside, which communicates a slit-shaped exhaust port 16 provided on the wall of the box body 1 with a slit-shaped outdoor discharge port 17 located outdoors and provided on the outer surface. The exhaust passage 15 and the air supply passage 11 are formed so as to face each other as adjacent parallel passages with the partition 19 as a boundary, thereby forming one ventilation pipe 20. The partition 19 of the ventilation tube 20 is made of synthetic paper mixed with carbon fiber, a board made of scrap metal wool in the shape of a pine, or a metal sheet with fine holes.
It is formed of a sheet or the like whose main component is a high molecular weight polymer, and the temperature or humidity of the air on both sides of the partition 19 is exchanged through the partition 19.

In such a configuration, when the impeller 3 is driven by the motor 4, an air flow as shown by the arrow in the figure is generated. Particulate or fibrous substances and bad odors contained in indoor air a are filtered through filter 7.
is removed and sucked into the fan. Particulate or fibrous substances are removed from the outside air b by the dust removal filter part of the filter 12 located in the air supply passage 11.
The NOx catalyst filter removes acidic gases such as nitrogen dioxide (NO ₂ ) and sulfur dioxide (SO ₂ ) from automobile exhaust gas, resulting in clean air. When the temperature and humidity of the air in the exhaust passage 15 is close to that of the air, the air is sucked into the impeller 3 from the air supply port 14 on the wall of the fan casing 6 through the indoor air suction passage 20, increasing the oxygen concentration of the indoor air. Clean air from indoors and outdoors sucked into the impeller 3 is mixed in a passage inside the impeller 3 and the fan casing 6, and is blown to the fan discharge passage 13. The air c discharged into the room is cleaned by removing carbon monoxide (CO) contained in the air in the fan discharge passage 13 with a CO catalyst filter installed at the discharge port 10 and having an oxygen concentration of 20% or more. It's air. Further, the exhaust to the outside is carried out through the exhaust passage 15 through the slit-shaped exhaust port 16 of the box body 1.
The air flows through the partition 19 into the air supply passage 11, exchanging temperature and humidity with the air, and is discharged outdoors from the outdoor outlet 17. In other words, indoor air suction passage 2
0 and the suction passage 20, and an intake passage 18 and an intake passage 18 in which a CO catalyst filter 12 is installed.
The air blower of the present invention, which has an exhaust passage 15 adjacent to the exhaust passage 15 and a discharge passage into the room, uses the filter 7 of the intake port 8 to remove indoor air that has been contaminated during cooling and heating.
Cleaning is carried out in stages, and the outside air, which has been purified by the filter 12 mainly composed of NOx catalyst in the air supply passage 11, is introduced and mixed inside the fan to reduce the concentration of pollutant gases, especially CO
The CO catalyst filter 9 at the discharge port 10 is diluted and exhausted to the outside through the exhaust passage 15.
CO is completely removed and absorbed, and fresh air containing no toxic gases is blown into the room from the outlet 10 and circulated inside the room. Even when using consuming appliances, the concentration of toxic gases is extremely low, and the oxygen concentration can be maintained at the same level as normal, and there is no loss of thermal energy due to the introduction of outside air or changes in indoor air conditioning conditions, allowing indoor circulation and forced supply. This is a device that allows for air purification and air purification.

The NOx catalyst filter is made by mixing powdered activated carbon, calcium carbonate, calcium hydroxide, and calcium sulfate in an appropriate mixing ratio, for example, 2:3:3:
The composition kneaded and molded in step 2 is granulated and held between two sheets of nonwoven fabric with a needle punch to form a sandwich type, or a powder molding method such as cast molding or press molding is applied. It is obtained by molding it into a honeycomb shape or a sandwich shape.
The removal rate of _NO2 is 70-90%. On the other hand, a CO catalyst filter is a catalyst in which precious metals (platinum, palladium) are supported on a hardened body whose main components are alkali, powdered activated carbon, and cement.The filtering process is almost the same as that of a NOx catalyst filter,
The removal rate is greater than 80% in one example.

As described above, the blower device of the present invention is able to purify indoor air with a single blower without changing the indoor air conditioning state, reducing operating costs for air conditioners and heating equipment, and creating a comfortable indoor environment. Since the supply and exhaust air flow rate is usually 1 to 2 m ³ /min, the supply and exhaust pipes are small with a diameter of about 100 mm, so the wall opening size is about 1/1 of the conventional size. 3, and because it is circular, construction is easy.The indoor circulation air volume is about 2.5 times the intake and exhaust ventilation, which makes the indoor temperature distribution uniform and prevents discomfort even when the wind hits the human body. It has the ability to create an indoor living environment where you do not feel any discomfort, and has the excellent effect of constantly keeping indoor circulating air clean by removing substances and harmful gas components contained in indoor air and outdoor air using a catalytic filter. be.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an air blower according to an embodiment of the present invention, FIG. 2 is a front sectional view, and FIG. 3 is an enlarged partial sectional view of a ventilation tube. 1... Box body, 7... Filter, 8... Ventilation port, 9... CO catalyst filter, 10... Discharge port, 11... Intake passage, 12... CO catalyst filter, 13... Discharge passage, 15 ...Exhaust passage, 2
0...Ventilation tube.

Claims (1)

[Scope of Claims] 1. An intake port, a discharge port, and a ventilation tube are provided in the box body, and the ventilation tube forms two flow paths communicating with the outside, and a suction path for indoor air and a supply path for outside air are provided on the fan suction side. A blower device comprising a fan discharge passage and an exhaust passage to the outdoors on the fan discharge side, and a catalytic filter equipped with an air purifying function in either or both of the indoor air suction passage and the fan discharge passage. 2. The blower device according to claim 1, wherein the catalyst filter is a filter equipped with a CO removing agent or a filter equipped with a NOx removing agent, alone or in combination.