JPS6315504B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a blower device that can simultaneously circulate indoor air, force air supply, and force exhaust air with a single blower for the purpose of purifying indoor air while ensuring indoor air conditioning. It is something to do.

In recent years, with the spread of new construction materials, the airtightness of rooms has improved, making it difficult to replace indoor air with one-sided air supply or exhaust, and simultaneous supply and exhaust ventilation has become necessary. Conventionally, as a device for indoor ventilation,
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. Therefore, the disadvantage 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 supply/exhaust ventilation fan and an air purifier, they do not require total heat exchange. Similar to ventilation fans with built-in ventilators, the equipment configuration is complicated and large, and two blowers are required, making them expensive and having the drawback of 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 hardened 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 maintains the oxygen concentration of indoor air without changing the indoor air conditioning condition.

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 denotes 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 the 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 plate 18 as a boundary, thereby forming a single ventilation tube 19. The partition plate 18 of the ventilation tube 19 is made of synthetic paper mixed with carbon fiber, a boat made of scrap metal wool formed into a pine shape, a metal sheet with micro holes, or a sheet mainly composed of a polymer. The temperature or humidity of the air on both sides of the partition plate 18 is exchanged through the partition plate 18.

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.
It is removed by the impeller 3 and sucked into the impeller 3. Particulate or fibrous substances are removed from the outside air b by a dust removal filter of a filter 12 located in the air supply passage 11.
Acidic gases such as nitrogen dioxide (NO ₂ ) and sulfur dioxide SO ₂ from automobile exhaust gas are removed by the _NO When the temperature and humidity of the air is close to that of the air in the exhaust passage 15, 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 drawn into the impeller 3 from inside and outside the room 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 fresh, clean air with an oxygen concentration of 20% or more, in which carbon monoxide CO contained in the air in the fan discharge passage 13 is removed by a CO catalyst filter provided at the discharge port 10. . In addition, the exhaust gas to the outside flows through the exhaust passage 15 from the slit-shaped exhaust port 16 of the box body 1, and is transferred to the air supply passage 11 through the partition 18 while converting the temperature and humidity, and is discharged to the outside from the outdoor discharge port 17. . That is, the present invention comprises a suction passage 20 for indoor air, an air supply passage 11 that communicates with the suction passage 20 and is equipped with a CO catalyst filter 12, an exhaust passage 15 adjacent to the air supply passage 11, and a discharge passage into the room. The blower device performs a first stage of cleaning of indoor air that has been contaminated during cooling and heating using a filter 7 in an intake port 8, and then introduces purified outside air through a filter 12 mainly containing NO _x catalyst in an air supply passage 11. The contaminant gas concentration, especially the CO concentration, is diluted and exhausted to the outside through the exhaust passage 15, and the CO catalyst filter 9 at the discharge port 10 removes CO.
The fresh air containing no toxic gases is blown into the room from the outlet 10 and circulated indoors, and the indoor air is consumed by gas stoves, kerosene stoves, etc. Even when the equipment is used, the concentration of toxic gases is extremely low and the oxygen concentration can be maintained at the same level as normal, and indoor circulation and forced air supply and exhaust can be performed without loss of thermal energy or changes in indoor air conditioning conditions due to the introduction of outside air. This is a device that has a possible air purification function.

The NO _x catalyst filter is made of a composition containing powdered activated carbon, an alkali, and a cementitious agent as main components, that is, calcium carbonate, calcium hydroxide, and calcium sulfate in an appropriate mixing ratio, for example,
A composition kneaded and molded at a ratio of 2:3:3:2 is granulated and held between two sheets of nonwoven fabric with a needle punch to form a sandwich type, or
It is obtained by applying powder molding methods such as cast molding and press molding to form into a honeycomb shape or a sandwich shape, and when air with a high concentration of _NOx is flowed through this _NOx catalyst filter, the alkali and cement agent mentioned above are removed. The composition contained in the main component causes an absorption reaction with NO _x in the air, and the powdered activated carbon has the effect of increasing this reaction, and because it has no reducing property in the absorption reaction, NO _x
The removal rate is 70-90%. On the other hand, the CO catalyst filter contains a hardened material mainly composed of alkali, powdered activated carbon, and cement, such as kareem carbonate, lime aluminate, and powdered activated carbon in a weight ratio (5 to 15%):
(10-50%): A composition consisting of (35-75%) platinum,
It is a catalyst in which about 0.3% of the weight of each noble metal is supported.
Similar to the NO _x catalyst filter. Its action is when air with a high concentration of CO flows through this catalyst, the active action of the catalyst surface oxidizes the CO in the air and turns it into _CO2.
The CO removal rate is 80% or more in one embodiment.

As described above, the blower device of the present invention can purify indoor air and use a single blower without changing the indoor air conditioning state, reducing the operating costs of air conditioners 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. By setting the indoor circulation air volume to about 2.5 times the supply and exhaust air volume, the indoor temperature distribution is uniform, and even when the wind hits the human body, it does not cause discomfort. It is possible to create a comfortable indoor living environment, and the CO catalyst filter at the discharge port removes CO that is present in large quantities indoors.
Fresh air with low CO is blown out, and the NO _x catalytic filter in the air supply passage removes NO _x , which is present in large amounts outdoors and is included in car exhaust gas, and clean outside air is introduced and mixed inside the box. This has the excellent effect of supplying fresh air indoors.

[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 thereof, and FIG. 3 is an enlarged partial sectional view of a ventilation pipe. 1...Box body, 5...Fan suction port, 8...Suction port, 9...CO catalyst filter, 10...Discharge port,
11... Outside air supply passage, 12... NO _x catalyst filter, 15... Exhaust passage, 19... Ventilation tube.

Claims (1)

[Claims] 1 The box body 1 is provided with an indoor air intake port 8, an indoor air discharge port 10, and a ventilation pipe 19, and the ventilation pipe 1
Reference numeral 9 forms two flow paths that communicate with the outside, and includes a suction path 20 for indoor air and an air supply path 11 for outside air on the fan suction side.
A fan discharge passage 13 is provided on the fan discharge side, and a filter 12 in which a dust removal filter and a catalyst filter formed of a composition having NO _x removal ability are laminated is disposed in the outside air supply passage 11,
A blower device characterized in that a catalyst filter 9 made of a composition having CO removal ability is attached to the discharge port 10 into the room.