JPH0585416U - Air cleaner - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an air purifier with an improved filter unit structure that can suppress the increase in the capacity of a blower fan or a motor without impairing the dust collecting function and the deodorizing function. A filter unit 20 is provided which faces the intake port 13 of the ventilation passage 12 and allows air to pass therethrough, and the filter unit 20 is laminated in a housing 21 with a predetermined gap between at least the same type. It has a plurality of sheet filters 22, and each filter 22 is connected to the intake port 1
3 is arranged substantially parallel to the flow axis.
The filter 22 may have a configuration in which functionally different types are alternately stacked, for example, a combination of two types for dust collection and deodorization. It is also possible to use a mesh-shaped filter 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air purifier used particularly for home use, and more particularly to an air purifier having an improved filter function.

[0002]

[Prior Art]

 In the case of air purifiers for general households, until then, it was only possible to remove the dust from the sucked air using a filter. In recent years, in addition to this dust removal filter, functional filters such as an activated carbon filter, static electricity removal filter, deodorization filter and carbon monoxide (C0) removal filter have been provided, and not only dust in the air but also foul odors, dust, and harmful Multi-functional type that can remove various inorganic gases is becoming popular.

By the way, conventionally, for example, in order to enhance the dust removing function and the deodorizing function, the following means are adopted. That is, the dust removing function is improved by increasing the thickness of the dust collecting filter. In the case of the deodorant function, it is only necessary to impregnate the filter with a large amount of adsorbed components such as activated carbon. To this end, increasing the thickness of the deodorant filter, as with the dust collection filter, increases the impregnation amount, resulting in Can be increased.

[0004]

[Problems to be solved by the device]

 However, the dimensional increase of the thickness of each of the dust collecting filter and the deodorizing filter means that the flow resistance of the air passing therethrough increases. The ventilation passage is equipped with a blower fan and its drive motor, and it is required that the fan and the motor have large capabilities to cope with the large air resistance. Therefore, as the capacity of the fan and motor increases, the size of the air cleaner as a whole also increases, resulting in higher costs.

An object of the present invention is to provide an air purifier with an improved filter unit structure that can suppress an increase in capacity of a fan or a motor without impairing a dust collecting function or a deodorizing function.

[0006]

[Means for Solving the Problems]

 The air purifier according to the present invention includes a filter unit that faces the intake port of the ventilation passage and allows air to pass therethrough. At least the same type of filter units are stacked in the housing with a predetermined gap. It has a plurality of sheet filters and each filter is arranged substantially parallel to the flow axis of the intake port.

Further, in the case of the present invention, the plurality of filters may have a structure in which functionally different kinds are alternately laminated, and for example, a combination of two kinds for dust collection and deodorization may be used. it can. Further, it is also possible to use a mesh-shaped filter.

[0008]

[Action]

 The contaminated air passing through the filter unit is cleaned and exhausted by removing dust while passing between the filters when a large number of laminated filters are used for collecting dust, for example. During the passage of air between the filters, the filters are arranged substantially parallel to the flow axis of the intake port with a suitable gap, so that the air resistance accompanying passage of the filter unit is minimized. Therefore, the fan drive system including the fan can have the minimum capacity within the required range.

[0009]

【Example】

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

As shown in FIG. 1 and FIG. 2, a duct 11 (ventilation path) 12 for ventilation through which contaminated air flows is provided in a casing 11 of an air cleaner 10, and an intake port 13 of this duct 12 is provided. Faces the lower front surface of the casing 11, and the louver-shaped exhaust port 14 faces the upper front surface. A fan 30 for forced air blowing is arranged near the duct intake port 13 on the upstream side of the duct, and by operating the fan 30 by a drive motor (not shown), contaminated air outside the casing 11, that is, inside the room, is discharged from the intake port 13. The duct 12 is forcibly sucked.

An improved filter unit 20, which is the essence of the present invention, is arranged at a position facing the outside from the front surface of the casing 11 on the further upstream side of the duct intake port 13. That is, the unit housing portion 15 is spatially formed on the upstream side of the intake port 13 with the cross section being slightly enlarged, and the filter unit 20 is detachably attached thereto.

The filter unit 20 has a box-shaped housing 21 whose front and rear surfaces are open, and inside the housing 21, a plurality of flat sheet-shaped filters 22 are stacked at suitable intervals in the box height direction. The respective filters 22 are parallel to the duct axis and allow air to flow between them. A flange-like flange 23 is provided along the rectangular cross section at the front open end of the housing 21, and the flange 23 is brought into contact with the front abutting step portion 16 of the unit housing portion 15 for positioning. There is. Handles 23a for taking out the unit are provided on both front surfaces of the flange 23.

Further, in terms of positioning and fixing, the rear opening end of the housing 21 is brought into contact with the rear abutting step portion 17 of the unit accommodating portion 15, and here, the housing 21 is stepped by adsorption by several magnets 18. It can be locked to the portion 17. As shown in the drawing, a wire mesh filter 24 may be attached to the rear open end of the housing 21. The housing 21 is made of a magnetic material such as metal because it is attracted to the magnet 18.

Further, as is apparent from FIG. 1, an intake grill 25 is further attached to the front side of the flange 23 of the housing 21, and the intake grill 25 is provided with a large number of slit-like ventilation holes 26 for introducing air. It is a flat plate. The intake grill 25 is also brought into contact with the front-side butting step 16 of the unit accommodating portion 15 and is mounted substantially flush with the front surface of the casing 11.

The filter 22 of the embodiment stacked and stored in the housing 21 is a dust collecting filter having the same shape and the same kind for removing dust. However, the filter unit 20 of the present invention is not limited to the dust collecting filter 22 having the same function as in the embodiment. It is also possible to employ a structure in which about half of the dust collecting filters 22 are replaced with, for example, deodorizing filters, and the dust collecting filters 22 and the deodorizing filters are alternately laminated with an appropriate gap. Naturally, in this case, the function of removing dust and unpleasant odor in the suctioned air can be obtained. Further, the filter 22 can be used with only a single function of the deodorant filter. Furthermore, as another embodiment, a sheet member made of wire mesh can be used for the filter 22.

Next, the operation and action of the air cleaner of the embodiment having the above configuration will be described.

When the power supply to the motor is turned on, the fan 30 operates, and the dirty air (arrow in FIG. 1) sucked from the intake grill 25 passes through the filter unit 20 to be purified, and the air exhaust port of the duct 12 is discharged. It is blown out again from 14. The polluted air passing through the filter unit 20 is removed while passing between the filters when a large number of laminated filters 22 are used for collecting dust, for example.

While the air is passing between the filters 22, the filters 22 are arranged substantially parallel to the flow axis of the duct 12 with a suitable interval, so that the resistance caused by the air passing through the filter unit 20 is minimized. Be done. Therefore, the capacity of the blast drive system including the fan 30 can be the minimum required specifications.

When it is necessary to replace the filter 22 due to long-term use, the intake grill 25 is removed from the casing 11, and the filter unit 20 is pulled out to the front side by grasping the handle 23a of the flange 23. Since the filter unit 20 is attracted to the unit housing portion 15 by the magnet 18, it can be easily removed. After the removal, a new filter unit is housed and the intake grill 25 is attached to the casing 11 again to complete the filter replacement.

[0020]

[Effect of the device]

 As described above, the air purifier according to the present invention has a structure in which the filters of the filter unit are laminated in a sheet shape and substantially parallel to the flow axis of the ventilation passage. Air resistance is minimized. Therefore, it is possible to suppress the increase in the capacity of the blower drive system including the fan and to use the required small size specifications, and it is particularly suitable for home use where it is desired to downsize the airframe in terms of storage space and cost.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of an air cleaner according to the present invention.

FIG. 2 is a side sectional view of the air cleaner of the embodiment.

[Explanation of symbols]

11 ... Casing, 12 ... Duct (ventilation path), 15 ... Unit storage part, 18 ... Magnet, 20 ... Filter unit, 22 ... Filter.

Claims (4)

[Scope of utility model registration request] 1. An air purifier comprising a filter unit which faces an intake port of a ventilation passage and allows air to pass therethrough, wherein a plurality of filter units of the same type are laminated in a housing with a predetermined gap. 2. An air purifier characterized by having the sheet-shaped filter of, and each filter being arranged substantially parallel to the flow axis of the intake port. 2. The air purifier according to claim 1, wherein a plurality of filters having different functions are alternately stacked. 3. The air purifier according to claim 1, wherein the plurality of filters are functionally composed of two types for dust collection and deodorization. 4. The air purifier according to claim 1, wherein the plurality of filters are reticulated.