JP2519474Y2 - Air cleaner - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an air purifier having an opening on the front surface as an air intake vent and an air blower fan on an extension of the air vent, which is essential for use. The present invention relates to an air purifier whose value is reduced.

[0002]

2. Description of the Related Art Conventionally, an opening is provided on the front surface as an air intake vent, and a dust collector and a blower fan are arranged in this order behind the air vent, and the sucked air is applied to the peripheral portion of the opening. An air purifier that blows out from the air outlet provided
In a so-called U-turn or turn-flow type air purifier, wind noise generated by rotation of a blower fan propagates to the outside through an opening. The propagating sound is composed of a direct sound generated by the fan and a reflected sound that is repeatedly generated by collision with the surroundings. Generally, as a method for reducing the noise value of this air purifier, there are many cases of research on the blade shape of the blower fan and the shape of the blower guide. Alternatively, as a simple method, there is a method of installing a sound absorbing material in the air duct system.

[0003]

[Problems to be Solved by the Invention] By the way, the method of studying the shape of the air blower fan blades and the air blow guide is as follows.
It takes a lot of time and enormous development cost to bring out the effect. In addition, in the method of installing the sound absorbing material in the air duct system, it is necessary to install the sound absorbing material in every place in the duct system, and an increase in product cost cannot be avoided.

SUMMARY OF THE INVENTION An object of the present invention is to provide an air purifier having a simple structure, being easy to manufacture, and having a large soundproof effect in order to solve the above problems.

For this reason, according to many studies and experiments conducted by the inventors of the present invention, in order to know the relation between the installation location of the sound absorbing material and the noise value, the sound absorbing material is provided on the entire inner surface of the air purifier where the air is blown. Was installed, and the sound absorbing material was sequentially removed to measure the noise. As a result, U-Turn or Turnblower type air purifiers have different noise levels when the sound absorbing material is installed on the entire inner surface of the ventilation and when the sound absorbing material is installed only behind the blower fan. It turned out to be almost identical. Therefore,
It has become possible to find the attachment position and size of the sound absorbing material that works effectively.

Therefore, in order to achieve the above object, the present invention provides an opening as an air intake vent on the front surface, and a dust collector and a blower fan are arranged in this order behind the opening. In an air purifier in which air sucked by a blower fan is U-turned to be blown out from an air outlet provided in the peripheral portion of the opening, only behind the blower fan and in parallel with the blower fan. And an acoustic absorber having an outer shape larger than the diameter of the blower fan is provided.

[0007]

By adopting the air cleaner of the present invention, a sound absorbing material having an outer shape larger than the diameter of the blower fan is provided only behind the blower fan in parallel with the blower fan. Is easy to manufacture,
Moreover, the noise level is reduced, and an excellent soundproof effect is achieved.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a front view of a ceiling-embedded air cleaner which is an embodiment of the present invention, and FIG. 2 is a plan sectional view of FIG. In FIG. 1 and FIG. 2, the ceiling-embedded air purifier 1 is attached to a mounting hole provided in a ceiling plate 3, and has an opening (opening grill) 7 as a ventilation inlet for ventilation and a peripheral edge of the opening 7. The front plate 5 is provided with a blow-out part 7a, and the storage box 9 is mounted behind the front plate 5. Inside the storage box 9, a dust collecting portion provided behind the opening grill 7, for example, a filter 11, and a blower guide 1 for guiding air that has passed through the filter 11.
3, the blower fan 15 and the fan motor 17 are arranged in this order, and the blower fan 15 is provided only behind the blower fan 15.
A sound absorbing material 19 having an outer shape larger than the outer diameter of the blower fan 15 is arranged in parallel with.

By driving the fan motor 17, the blower fan 15 rotates, and the wind noise generated by this rotation propagates to the outside through the opening grill 7. This propagating sound is composed of a direct sound generated by the fan and a reflected sound that is repeatedly generated by collision with the surroundings. Particularly, the sound generated by the collision repeatedly collides with each other and finally collides with the back surface of the blower fan 15, and the sound of the vertical component propagates from the opening grill 7 to the blower fan 15. Is what comes.

Therefore, only behind the blower fan 15,
By arranging the sound absorbing material 19 having an outer shape larger than that of the blower fan 15 in parallel with the blower fan 15,
It is possible to absorb the reflected sound of the vertical component that is generated, and as a result, the noise value is reduced and an excellent soundproof effect is achieved.

Next, FIG. 3 is a front view of a floor-standing air cleaner which is another embodiment of the present invention, and FIG. 4 is a side sectional view of FIG. 3 and 4, the floor-standing (stand-mounted) type air cleaner 21 is provided with an opening grill 25 serving as a suction ventilation opening and an opening grill 27 serving as a ventilation ventilation opening that opens above the opening grill 25. The front plate 23 and a storage box 29 mounted behind the front plate 23. A filter 31 provided behind the opening grill 25, a blower fan 33 for sucking and introducing air through the filter 31, and a fan motor 3 are provided in the housing box 29.
The sound absorbing member 37 having the outer shape larger than that of the blower fan 33 is housed in parallel with the blower fan 33 only behind the blower fan 33. 3
Reference numerals 9 and 41 denote operation switches and their display lamps.

The sound absorbing material 37 is similar to the sound absorbing material 19 in FIG. 2, and is a U-turn or turn-blow of the generated vertical component.
The reflected sound is absorbed, and as a result, the noise value is reduced and an excellent soundproof effect is achieved.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate design changes.

[0015]

As is apparent from the above description, the air cleaner of the present invention is provided with the sound absorbing material having the outer shape larger than the blower fan only behind the blower fan and in parallel with the blower fan. By providing the above, the problems of the prior art are effectively solved, and the U-turn type air purifier has an effective soundproof effect.

[Brief description of drawings]

FIG. 1 is a front view of a ceiling-embedded air purifier according to an embodiment of the present invention.

FIG. 2 is a plan sectional view of FIG.

FIG. 3 is a front view of a floor-standing air purifier according to another embodiment of the present invention.

FIG. 4 is a side sectional view of FIG. 3;

[Explanation of symbols]

 1 Ceiling-embedded air purifier 5,23 Front plate 7,25,27 Opening grill 9,29 Storage box 15,33 Blower fan 19,37 Sound absorbing material 21 Floor-standing air purifier

Claims (1)

(57) [Scope of utility model registration request] 1. An opening as an air intake for air intake is provided on the front surface, and a dust collecting part and a blower fan are arranged in this order behind the opening, and the air sucked by the blower fan is U-turned. In the air purifier that causes the air to be blown out from the air blowout port provided in the peripheral portion of the opening, an outer shape that is parallel to the blower fan and is larger than the diameter of the blower fan only behind the blower fan. An air purifier characterized by being provided with a sound absorbing material.