JPS629814B2 - - 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 construction materials, the airtightness 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. 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 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 partially enlarged sectional view showing the configuration of the air supply and exhaust passage in detail. 1, 2, and 3, 1 is a box body, which is attached to the surface of a wall 2, and has an impeller 3, a motor 4 that drives the impeller 3, and a fan suction port 5 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 A7 formed by stacking a dust removal filter and a filter mainly composed of activated carbon is disposed, and an outlet port 10 into the room in which a CO catalyst filter 9 is disposed. ing. 11
is an outside air supply passage formed by an elongated duct-shaped partition plate 12, and a filter 13 in which a dust removal filter and a NOx catalyst filter are laminated is located in the passage, both ends in the flow direction are open, and a fan discharges. A slit-shaped outside air supply port 15 is formed in the wall surface of the fan casing 6 through the passage 14 and is an opening at one end surface. Reference numeral 16 denotes an elongated duct-shaped partition plate 12 that forms the air supply passage 11.
A slit-shaped exhaust port 17 provided on the wall of the box body 1 is located in the box body, and a slit-shaped outdoor discharge port 18 provided on the outer circumferential surface is located in the box body. It communicates. The exhaust passage 16 and the air supply passage 11 are formed so as to face each other as adjacent parallel passages with the partition plate 12 as a boundary.
This constitutes one ventilation tube 19. This ventilation pipe 1
The partition plate 12 of 9 is formed of synthetic paper mixed with carbon fibers, a board made of scrap metal wool in a pine shape, a metal sheet with micro holes, meat whose main component is a high molecular weight polymer, etc. Board 1
2, the temperature or humidity of the air on both sides is exchanged, that is, total heat exchange is performed.

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 A.
7 and is sucked into the impeller 3. Particulate or fibrous substances are removed from the outside air b by the dust removal filter part of the filter 13 located in the air supply passage 11, and nitrogen dioxide (NO ₂ ) and sulfur dioxide (SO ₂ ) from automobile exhaust gas etc. are removed by the NOx catalyst filter. The acidic gases such as these are removed and the air becomes clean, and while flowing through the air supply passage 11, the temperature and humidity of the air in the adjacent exhaust passage 16 is brought to a state close to that of the air in the adjacent exhaust passage 16 by the partition plate 12, and the air is passed through the air supply port on the wall of the fan casing 6. 1
5 through the indoor air suction passage 20 to the impeller 3.
This increases the oxygen concentration in indoor air. Clean air from inside and outside the room 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 14. The air c discharged into the room is cleaned by removing carbon monoxide (CO) contained in the air in the fan discharge passage 14 with a CO catalyst filter installed at the discharge port 10 and having an oxygen concentration of 20% or more. It's air. In addition, the exhaust air to the outside flows through the exhaust passage 16 from the slit-shaped exhaust port 17 of the box body 1, exchanges temperature and humidity with the air into the air supply passage 11 through the partition plate 12, and is discharged outdoors from the outdoor discharge port 18. be done. That is, it communicates with the indoor air suction passage 20 and the suction passage 20,
Intake passage 11 equipped with CO catalyst filter 13
The air blower of the present invention, which includes an exhaust passage 16 adjacent to the intake passage 11 and a discharge passage into the room, directs indoor air that is contaminated during cooling and heating to the intake port 8.
The first stage of cleaning is performed by the filter 7 in the air supply passage 11.
Introduce the clean outside air in step 3 and mix it inside the box.
The contaminant gas concentration, especially the CO concentration, is diluted and exhausted to the outside through the exhaust passage 16, and the discharge port 10 is
CO is completely removed and absorbed by the CO catalyst filter 9, and fresh air containing no toxic gas is blown into the room from the discharge port 10 and circulated in the room. Even when air-consuming appliances such as This device enables circulation and forced air supply and exhaust, and has an air purifying function.

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 cast.
It is obtained by molding into a honeycomb shape or harmonica shape by applying powder molding methods such as press molding,
The removal rate of _NO2 is 70-90%. On the other hand, a CO catalyst filter is a catalyst in which noble 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 the NOx catalyst filter, and the CO removal rate is is 80% or more when measured in one example.

Partition plate 12 of ventilation pipe 19 configuring air supply and exhaust passage
Synthetic paper mixed with carbon fiber based on paper, paper impregnated with hygroscopic material such as lithium chloride, aluminum foil based on thin metal plate, board made of fine metal hairs molded into a pine shape, etc. It is formed into an elongated duct shape using a metal sheet with micro holes, metal foil, or a board made of brushed polymer membrane, and is fixed at a predetermined interval within the ventilation tube 19, and has two flow channels. It can be easily constructed and has the feature of allowing heat exchange between the air on both sides of the partition plate. The ventilation tube 19 is provided with an opening corresponding to the hollow part of the partition plate 12 formed in the shape of an elongated duct and an opening communicating with the hollow part between the partition plates 12, and the partition plate 12 is fitted and fixed. It is composed of Therefore, recirculation in which air exhausted from the room is sucked into the room again does not occur. Further, the ventilation tube 19, that is, the supply and exhaust passage has a very simple structure and can be manufactured at low cost.

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 providing a comfortable indoor environment. Ventilation pipes usually have an air supply and exhaust air volume of 1
~2 m ³ /min, so it is small with a diameter of about 100 mm, and the wall opening size is about 1/3 of the conventional size, and because it is circular, it has the advantage of easy construction and improves indoor circulation. The air volume is approximately the intake and exhaust air volume.
By increasing the temperature by about 2.5 times, it has the excellent effect of making the indoor temperature distribution uniform and creating an indoor living environment where people do not feel uncomfortable even when the wind hits their bodies.

[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, FIG. 3 is an enlarged partial sectional view of a ventilation tube, and FIG. 4 is a perspective view of a partition plate. 1...Box body, 2...Wall, 8...Intake port, 10...
...Discharge port, 11... Air supply passage, 12... Partition plate,
16...Exhaust passage, 18...Outdoor discharge port, 19...
...Ventilation tube.

Claims (1)

[Claims] 1 A box body is provided with an intake port for indoor air, a discharge port into the room, and a ventilation tube for supplying and exhausting air. The openings are oriented in the axial direction, and the outdoor discharge ports of the exhaust passage are provided at predetermined intervals on the outer circumferential surface, allowing heat exchange in the supply and exhaust passage through elongated duct-shaped partition plates made of temperature and humidity exchange material. A blower device characterized in that it is equipped with an impeller that sucks indoor and outdoor air, mixes it, circulates it indoors, and at the same time exhausts a part of it to the outdoors from the ventilation pipe, thereby performing indoor circulation and forced ventilation at the same time. .