JP2012161487A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner capable of easily replacing a filter by a simple structure.SOLUTION: The air cleaner 1 includes: three filters 2 for adsorbing harmful substances; a blower 3 for forming an airflow passing the filters 2; a filter case 4 in which three filters 2 are stored; and a casing 5 for storing the filters 2, the blower 3 and the filter case 4.

Description

  The present invention relates to an air purifier that purifies air by adsorbing a substance harmful to a human body existing in indoor air.

2. Description of the Related Art Conventionally, there are known air purifiers that purify air by adsorbing and removing toxic substances and off-flavor substances that are harmful to the human body in the indoor air.
Such an air purifier is provided with a blower and a filter in the device, and sucks indoor air into the device and passes it through the filter to physically remove toxic substances and odorous substances in the air. The purified air is blown out to the outside (see, for example, Patent Documents 1 and 2).
There is also known an air purifier that deodorizes the air sucked into the device by oxidizing and decomposing it with plasma discharge or the like and blows out the air.

JP 2008-43580 A JP 2007-7484 A

  By the way, such an air cleaner is desired to have a simple structure from the viewpoint of maintenance. In addition, it is desired that an air cleaner equipped with a filter can be easily replaced.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an air purifier that has a simple structure and can easily replace a filter.

  In order to achieve the above object, an air cleaner according to the present invention includes a filter having an adsorbent that adsorbs a substance harmful to a human body existing in indoor air, and a blower that forms a flow of air passing through the filter. And a filter case in which the filter can be taken in and out.

In the present invention, by having a filter case in which a filter can be taken in and out, when replacing a filter, it is only necessary to remove a used filter from the filter case and insert a new filter into the filter case. It can be carried out.
Moreover, since it can install in a predetermined position by inserting a filter in a filter case, the installation structure of a filter becomes simple and an air cleaner can be made into a simple structure.

Moreover, in the air cleaner which concerns on this invention, it is preferable that the said filter is provided with the bag body formed with the nonwoven fabric, and many pellet-shaped adsorption agents accommodated in this bag body.
By being configured in this manner, the surface area of the adsorbent is increased, so that substances harmful to the human body existing in the indoor air can be efficiently adsorbed.
Moreover, since the adsorbent is accommodated in the bag, the filter can be easily replaced by gripping the bag.
Furthermore, since the filter can have a shape that follows the internal shape of the filter case, the gap between the filter and the filter case can be reduced.
And since a filter is comprised only by accommodating what made the adsorbent the pellet form in a bag body, cost reduction of a filter can be achieved.

Moreover, in the air cleaner which concerns on this invention, it is preferable that the said filter case is comprised so that multiple said filters can be accommodated.
With this configuration, the plurality of filters inserted into the filter case each have a shape that follows the internal shape of the filter case, so that the gap between the filter and the filter case can be further reduced.

Moreover, in the air cleaner which concerns on this invention, it is preferable to provide the filter replacement time notification mechanism which measures the drive amount of the said air blower and notifies the replacement time of the said filter from this drive amount.
By being configured in this way, the user can easily and reliably know when to replace the filter.

According to the present invention, by having a filter case in which the filter can be taken in and out, when replacing the filter, it is only necessary to remove the used filter from the filter case and insert a new filter into the filter case. Exchanges can be made.
Moreover, since it can install in a predetermined position by inserting a filter in a filter case, the installation structure of a filter becomes simple and an air cleaner can be made into a simple structure. As a result, maintenance of the air cleaner is facilitated, and the air cleaner can be easily manufactured.

It is a perspective view of an example of an air cleaner by an embodiment of the present invention. It is a disassembled perspective view of the air cleaner shown in FIG. It is a front view of a filter.

Hereinafter, an air cleaner according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
The air purifier 1 according to the present embodiment shown in FIGS. 1 and 2 mainly removes harmful substances such as gasified formalin and ammonia contained in the air in rooms such as hospitals, pathological facilities, and clinical facilities. Is installed.
The air cleaner 1 according to this embodiment includes three filters 2 (see FIG. 2) that adsorb harmful substances, a blower 3 (see FIG. 2) that forms a flow of air that passes through the filter 2, and three filters 2. And a housing 5 for housing the filter 2, the blower 3 and the filter case 4.

Here, the direction of the air flow formed by the blower 3 is defined as the direction of the arrow A in the figure, and the upstream side of the air flow is defined as the upstream A1 side, and the downstream side of the air flow is defined as the downstream A2 side.
The housing 5 is formed in a substantially rectangular parallelepiped shape through which air can pass from the upstream A1 side to the downstream A2 side, and a plurality of slits (not shown) are formed on the surface of the upstream A1 side so that the front panel can be attached and detached. 51 is provided, and an opening 52 is formed on the surface on the downstream A2 side.
The casing 5 is provided with the blower 3 and the filter case 4 therein, and the blower 3 is arranged on the upstream A1 side of the filter case 4.

As shown in FIG. 3, the filter 2 includes a bag body 21 formed of a nonwoven fabric and an adsorbent 22 that can adsorb harmful substances contained in the bag body 21.
The adsorbent 22 is formed in a number of pellets, and employs an adsorbent that purifies air by adsorbing harmful substances in the air by passing air through the surface. The components of the adsorbent 22 are appropriately selected according to the harmful substances to be adsorbed.
In addition, the component of the adsorbent 22 may be comprised by 1 type, and may be comprised by mixing several types. Further, the three filters 2 accommodated in the filter case 4 (see FIG. 2) may each contain the same component adsorbent 22 or may contain different component adsorbents 22. .

The bag body 21 is formed by folding a substantially rectangular non-woven fabric in half and adhering the end portions facing each other after accommodating the adsorbent 22 therein by thermocompression bonding or the like. In the present embodiment, the bonded edges form folds 21a. The bag body 21 may have a shape other than the above, and the folds 21a may not be formed.
The bag body 21 is formed in such a size that the accommodated adsorbent 22 can move inside. Thereby, the filter 2 is configured to be deformable by applying an external force.

Returning to FIG. 2, the filter 2 is configured to be housed in the filter case 4 in a stacking manner in the height direction. For this reason, the filter 2 is formed so that the width dimension d1 thereof is substantially the same as the width dimension d2 inside the filter case 4.
In the present embodiment, the filter 2 is formed so that the folds 21 a are located at both ends in the width direction of the bag body 21. When the filter 2 is accommodated in the filter case 4, the folds 21 a are formed on the inner surface of the filter case 4. It abuts and prevents a gap from being formed between the filter case 4 and the filter case 4.
Further, the height dimension h1 obtained by stacking three filters 2 is configured to be the same as or slightly lower than the height dimension h2 of the filter case 4.

The blower 3 includes a fan 31 and a motor 32 that rotates the fan 31, and is supported by a first frame 33 fixed to the housing 5. The first frame 33 is configured so as not to hinder the flow of air.
The motor 32 is supplied with power from the outside, and a switch 34 of the motor 32 is attached to the housing 5.
In addition, the housing | casing 5 is comprised so that decomposition | disassembly is possible so that the maintenance of the air blower 3 installed in the housing | casing 5 can be performed.

As shown in FIGS. 1 and 2, the filter case 4 is formed in a substantially rectangular parallelepiped box shape with the upper portion 4a open. The filter case 4 is formed with a plurality of vent holes 41 on the upstream A1 side surface 4b and the downstream A2 side surface 4c.
In the present embodiment, the vent holes 41 are formed in a long hole shape, and are arranged at intervals in the height direction and the width direction.
Note that the upstream side A1 side surface 4b and the downstream side A2 side surface 4c of the filter case 4 only need to be configured to be ventilated, and the shape of the vent hole 41 may be other than those described above. For example, a breathable mesh or the like may be attached.

The filter case 4 is configured to be detachable from the housing 5, and a filter case installation portion 53 in which the filter case 4 is installed is formed on the downstream A 2 side inside the housing 5. The filter case installation part 53 is configured such that the upper part 53a is opened and the filter case 4 can be attached and detached from above.
Further, on the upstream A1 side of the filter case installation portion 53, a second frame 54 (fixed to the housing 5 and prevents the installed filter case 4 from moving to the upstream A1 side or falling down. 2), and the opening 52 of the housing 5 described above is located on the downstream A2 side of the filter case installation portion 53. The second frame 54 is configured, for example, in a mesh shape so as not to disturb the air flow.
When the filter case 4 is installed in the filter case installation part 53, the downstream A2 side surface 4c is configured to be exposed to the outside of the housing 5 through the opening 52 of the housing 5 ( (See FIG. 1).

  Further, an upper portion of the filter case installation portion 53 is provided with a lid portion 55 that can close the opening of the upper portion 53 a of the filter case installation portion 53 and can be attached to and detached from the housing 5. The lid portion 55 is fixed to the housing 5 by a fixture 56 such as a decorative screw. In addition, the fixing tool 56 shall be removable from the exterior of the housing | casing 5 by the user, and it is comprised so that the cover part 55 may remove | deviate from the housing | casing 5 by removing the fixing tool 56. FIG.

Here, in the present embodiment, the fixture 56 fixes the lid 55 to the housing 5 and also fixes the filter case 4 to the housing 5. Specifically, screw holes 5d, 55d, and 4d (see FIG. 2) that overlap each other are formed in the housing 5, the lid portion 55, and the filter case 4, and screws are provided in these screw holes 5d, 55d, and 4d. The case 5, the lid 55, and the filter case 4 are fixed by screwing the shaped fixture 56.
Further, the lid 55 is configured to close the opening of the upper portion 4 a of the filter case 4 when attached to the housing 5.

Further, as shown in FIG. 2, the air purifier 1 of the present embodiment is provided with a filter replacement time notification mechanism 6 that notifies the replacement time of the filter 2.
The filter replacement time notification mechanism 6 includes a measurement unit 61 that measures the drive time of the blower 3 and a display unit 62 that displays the drive time measured by the measurement unit 61. The display unit 62 is provided at a position such as a side surface of the housing 5 that can be viewed by the user.
The filter replacement time notification mechanism 6 confirms that the drive time displayed on the display unit 62 has approached or exceeded a predetermined time, so that the user can change the filter 2 at the replacement time of the filter 2. It is configured to determine that there is.
For this reason, the user is informed in advance of the drive time that is an indication of the replacement time of the filter 2.
The display unit 62 may be provided with a lamp that blinks when the driving time exceeds a predetermined time.

Further, the air cleaner 1 of the present embodiment is provided with a caster 57 at the lower part of the housing 5 so as to be movable on the floor to be installed.
Moreover, the air cleaner 1 of this embodiment is comprised so that it may be piled up in an up-down direction.
For this reason, a recess (not shown) in which the caster 57 of the air cleaner 1 stacked on the upper side can be fitted is formed in the upper part of the housing 5.
In addition, the caster 57 does not need to be attached to the housing 5, and a recess into which the caster 57 can be fitted may not be formed.

Next, the usage method of the air cleaner 1 mentioned above is demonstrated.
First, the switch 34 of the motor 32 is turned on, the fan 31 is rotated, and air flows from the upstream A1 side to the downstream A2 side.
Thereby, air passes through the filter 2 on the downstream A2 side of the fan 31, harmful substances in the air are adsorbed by the adsorbent 22 of the filter 2, and the air is purified.
When the air is purified by continuous operation for a predetermined time, the switch 34 is turned off, the rotation of the fan 31 is stopped, and the air flow is stopped.

  At this time, the driving time of the blower 3 is measured by the measuring unit 61 of the filter replacement time notification mechanism 6, and this driving time is displayed on the display unit 62. Based on the driving time displayed on the display unit 62, the user can know the replacement time of the filter 2.

Next, a method for replacing the filter 2 will be described.
First, the fixing tool 56 is removed, the lid part 55 is removed from the housing 5, the filter case 4 is pulled up, and the filter case 4 is taken out from the filter case installation part 53.
Subsequently, the used filter 2 in the filter case 4 is taken out, and a new filter 2 is inserted into the filter case 4.
At this time, the shape and position of the filter 2 are adjusted so that no gap is generated between the inside of the filter case 4 and the filter 2.
Subsequently, the filter case 4 is inserted into the filter case installation portion 53, and the lid portion 55 is fixed to the housing 5 with a fixture.
In this way, the replacement of the filter 2 is completed.

Next, the effect of the air cleaner 1 mentioned above is demonstrated using drawing.
According to the air cleaner 1 according to the present embodiment, the filter case 4 in which the filter 2 can be taken in and out is provided, so that when the filter 2 is replaced, the used filter 2 is extracted from the filter case 4 and a new filter 2 is filtered. Since it suffices to insert the filter into the case 4, the filter 2 can be easily replaced.
Moreover, since the filter 2 can be installed in a predetermined position by inserting the filter 2 into the filter case 4 and installing the filter case 4 in the filter case installation part 53, the installation structure of the filter 2 becomes simple, and the air cleaning The machine 1 can have a simple structure. Thereby, while the maintenance of the air cleaner 1 becomes easy, the air cleaner 1 can be manufactured easily. In addition, the air cleaner 1 can be downsized.

Further, since the adsorbent 22 is formed in a number of pellets, the surface area of the adsorbent 22 is widened, so that harmful substances can be adsorbed efficiently.
Further, since the adsorbent 22 is accommodated in the bag body 21, the filter 2 can be easily replaced by gripping the bag body 21.
Furthermore, since the filter 2 has a configuration in which a large number of pellet-shaped adsorbents 22 are accommodated in the bag body 21, the filter 2 can have a shape that follows the internal shape of the filter case 4. 4 can be reduced.
Further, since the filter replacement time notification mechanism 6 is provided in the air cleaner 1, the previous user can easily and reliably know the replacement time of the filter 2.

As mentioned above, although embodiment of the air cleaner 1 by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the embodiment described above, the filter 2 is in a form in which a large number of pellet-shaped adsorbents 22 are accommodated in the bag body 21, but instead of the large number of pellet-shaped adsorbents 22, a large number of ring-shaped adsorbents 22 are used. A cylindrical adsorbent 22 may be used.
Moreover, the filter 2 is good also as a form which the adsorbent 22 exposed without providing the bag body 21. In this case, the filter 2 may be, for example, an adsorbent 22 formed in a plate shape having a honeycomb structure.

In the embodiment described above, the three filters 2 are installed in the filter case 4, but one filter 2, two, four or more filters 2 may be installed in the filter case 4.
In the embodiment described above, the filter case 4 can be attached to and detached from the filter case installation part 53 of the housing 5, but may be fixed to the filter case installation part 53.
In the above-described embodiment, the filter replacement time notification mechanism 6 notifies the replacement time of the filter 2 based on the drive time. However, the harmful substance adsorbed by the adsorbent 22 is determined from the rotation speed and rotation time of the fan 31. It is good also as a structure which notifies the replacement time of the filter 2 based on the quantity of this harmful substance.
Further, according to the present embodiment, the filter replacement time notification mechanism 6 that notifies the replacement time of the filter 2 is provided, but the filter replacement time notification mechanism 6 may not be provided.

DESCRIPTION OF SYMBOLS 1 Air cleaner 2 Filter 3 Blower 4 Filter case 5 Case 6 Filter replacement time notification mechanism 21 Bag body 22 Adsorbent

Claims (4)

A filter provided with an adsorbent that adsorbs substances harmful to the human body existing in indoor air;
A blower that forms a flow of air through the filter;
An air cleaner comprising: a filter case into which the filter can be taken in and out.   The said filter is equipped with the bag body formed with the nonwoven fabric, and many pellet-shaped adsorption agents accommodated in this bag body, The air cleaner of Claim 1 characterized by the above-mentioned.   The air cleaner according to claim 2, wherein the filter case is configured to accommodate a plurality of the filters. The air purifier according to any one of claims 1 to 3, further comprising a filter replacement time notification mechanism that measures a drive amount of the blower and notifies a replacement time of the filter based on the drive amount. Machine.

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