JPH1183094A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an air cleaner robust against a force being applied externally in which the power cord can be contained appropriately and the control circuit board can be protected against intruding water. SOLUTION: The body of this air cleaner comprises an intermediate case for supporting a filter 8 fixed with a fan motor 9, a rear case 11 provided with a wind path section 18 having an opening inscribing the opening of the intermediate case 5 and provided with a wind path section 18 having a diffuser 17 between the intermediate case and the rear case 11, and a front case 1 having a suction hole 3 fixed to the vicinity of the opening of the rear case 11 is supported on a base 20. A screw boss 22 is projected from the lower surface of the intermediate case 5 and a screw 24 is screwed into the screw boss 22 while clamping the rear case 11 between the screw boss 22 and the base 20 thus securing them integrally.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier for purifying indoor air.

[0002]

2. Description of the Related Art FIG. 4 is a longitudinal sectional view showing an example of a conventional air cleaner, and FIG. 5 is a rear view thereof. To use the air purifier, the power cord 28 is plugged into an outlet and the operation switch 25 is turned on, the blower fan motor 9 starts and the blower fan 10 rotates. Then, due to the pressure difference caused by the rotation, the indoor air is sucked in from the suction port 3, filtered through the filter 8, and discharged from the outlet 17. The continuous operation of suction, filtration, and discharge converts dirty indoor air containing dust and the like into clean air.

[0003]

According to the air purifier constructed as described above, the mounting table 20 is attached to the bottom surface 1 of the rear case 11.
4, the external case may be deformed when an external force is applied to the device, and the device may be distorted. In addition, there is no suitable place for storing the power cord 28. Further, the outlet 17 is located on the top surface 1.
3, water may enter the control circuit board 27 in the mounting table 20 and water may enter the mounting table 20. In order to prevent this, rubber is inserted into the lead wire insertion hole 19 through which the lead wire 29 passes. Although a bush or the like is used to secure the sealing property, the cost is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and is robust against external force applied to equipment, can properly accommodate a power cord, and can further control a control circuit board. It is an object of the present invention to obtain an air purifier capable of protecting the air from infiltration water.

[0005]

An air purifier according to the present invention has a box-shaped inner case supporting a filter and having a blower fan motor attached thereto, and has an inner part near the opening near the opening. And a front case or the like having an air outlet between the inner case and the middle case, and a front case and the like having an air inlet and attached near the opening of the rear case. A screw boss protrudes from the lower surface of the middle case, a rear case is sandwiched between the screw boss and the mounting table, screws are screwed into the screw boss, and these are integrally fixed. .

In addition, the table is formed by a neck and a shoulder, and a rib-shaped support projection is provided on the shoulder of the table, the upper end of which is in contact with or close to the rear case.

Further, a plurality of support projections are arranged at intervals, and a concave storage portion is provided on the shoulder of the mounting table between the support projections.

Further, a convex stopper is provided along the edge of the concave storage portion.

Further, a control circuit board is provided in the mounting table, and the control circuit board and the blower fan motor in the cleaner body are connected by leads, and lead wires are connected to the bottom surface of the rear case and the top surface of the mounting table. The insertion hole provided in the mounting table is formed in a cylindrical shape from the top surface of the mounting table to the bottom surface side, and between the upper opening provided in the top surface of the insertion hole and the lower opening provided in the bottom surface. Is formed longer than the distance between the upper opening and the control circuit board.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 is a longitudinal sectional view of Embodiment 1 of the present invention, and FIG. 2 is a rear view of FIG. Reference numeral 1 denotes a flat front case provided with a locking portion 2 having an L-shaped cross section at an edge, and 3 denotes a flat portion 4 of the front case 1.
This is the air suction port provided in.

Reference numeral 5 denotes a middle case having a substantially U-shaped cross section, which comprises a flat portion 6 and a locking portion 7. The locking portion 7 includes a first locking portion 7a positioned on the flat surface portion 6 side and a second locking portion 7b positioned on the opening side, and the second locking portion 7b is widened. A step is formed between the first locking portion 7a and a filter 8 made of a nonwoven fabric or the like is accommodated in the second locking portion 7b. The locking portion 2 of the front case 1 is circumscribingly attached to the second locking portion 7b so as to be detachable. Reference numeral 9 denotes a blower fan motor attached to the flat portion 6 of the middle case 5, and reference numeral 10 denotes a blower fan driven by the blower fan motor 9.

Reference numeral 11 denotes a substantially box-shaped rear case having an opening, and includes a rear surface portion 12, a top surface portion 13, a bottom surface portion 14, and a side surface portion 15.
And is formed by. The top surface portion 13 includes a first top surface portion 13a located on the rear surface portion 12 side and a second top surface portion 13b located on the opening side.
3b is widened to form a step with the first top surface 13a. Then, the vicinity of the opening of the rear case 11 is attached to the vicinity of the opening of the middle case 5 so that the openings of the middle case 5 and the rear case 11 face in the same direction.

In this case, the second top surface 1 of the rear case 11
3b and the bottom surface 14 circumscribe the second locking portion 7b of the middle case 5, and the first top surface portion 13a of the rear case 11 circumscribes the first locking portion 7a on the top surface side of the middle case 5. However, the bottom surface 14 of the rear case 11 is
a is not in a contact state, and a gap 16 is formed therebetween. The opening side of the rear case 11 and the front case 1
The opening side of each of the second locking portions 7 of the middle case 5
In a state in which b is inscribed, the edges are abutted on each other.

Reference numeral 17 denotes an air outlet formed on the top surface 13 of the rear case 11 located above an air passage 18 formed between the middle case 5 and the rear case 11, and reference numeral 18a denotes the air outlet. An air path plate is provided below the road portion 18 near the bottom portion 14 of the rear case 11, and its edge is in contact with the flat portion 6 of the middle case 5, and 19 is provided on the bottom portion 14 of the rear case 11. It is a lead wire insertion hole. The front case 1, the rear case 11, the middle case 5, the filter 8, the blower fan motor 9 and the like constitute a main body of the air purifier.

Reference numeral 20 denotes a table for supporting the main body, and a neck 20a.
And a shoulder portion 20b for supporting the same. A lead wire insertion hole 21 is provided on the top surface portion 23 of the neck portion 20a in accordance with the position of the lead wire insertion hole 19 provided on the bottom surface portion 14 of the rear case 11. I have. Reference numeral 22 denotes a screw boss protruding from the first locking portion 7a located on the table 20 side of the middle case 5 to the gap 16 side. The bottom portion 14 of the rear case 11 is fixed to the screw boss 22 and the neck 20a of the table 20. The screw 24 is screwed into the screw boss 22 and fixed, and the mounting table 20, the middle case 5, and the rear case 11 are integrally fixed. Reference numeral 25 denotes an operation switch disposed on the shoulder 20 b of the table 20 on the front case 1 side, and 26 denotes a bottom plate of the table 20.

Reference numeral 27 denotes a control circuit board housed in the table 20, and reference numeral 28 denotes a power cord connected to the control circuit board 27. Reference numeral 29 denotes a lead wire for electrically connecting the control circuit board 27 and the blower fan motor 9 to supply power to the blower fan motor 9.
Are inserted through lead wire insertion holes 19 and 21 provided in the top surface portion 23 of FIG.

Reference numeral 30 denotes a shoulder 2 on the rear case 11 side of the table 20.
Ob is a rib-shaped support projection projecting from the bottom case 14 toward the bottom surface 14 side of the rear case 11, and the top portion extends to a position in contact with or close to the bottom surface 14 of the rear case 11. The support protrusions 30 are arranged at least at two places with a space in the width direction of the table 20 so as to support a load applied to the device from above. In addition, 3
Reference numeral 0a denotes a locking portion for locking the electric cord 28 provided on the support protrusion 30.

Reference numeral 31 denotes a table 20 between the support projections 30.
The power cord 28 can be stored in a concave storage portion formed in the shoulder portion 20b. 32 is a storage unit 31
The power cord 28 stored in the storage section 31 is connected to the storage section 3 by a convex stopper provided along the edge of the rear case 11 side.
I try not to jump out of one.

The operation of the first embodiment configured as described above will be described. To use the air purifier, first, the power cord 28 is plugged into an outlet (not shown), and when the operation switch 25 is turned on, the blower fan motor 9 starts and the blower fan 10 rotates. Then, due to the pressure difference generated by this rotation, the indoor air is sucked through the suction port 3, filtered through the filter 8, and discharged through the air passage 18 through the air outlet 17. Thus, suction, filtration,
By continuing the discharging operation, dirty indoor air containing dust and the like is changed to clean air.

When an external force is applied to the air purifier, the middle case 5, the rear case 11, and the mounting table 20 are screwed by the screw boss 22 and the screw 2
4 and are integrally fixed.
Supports the load applied to the device from above, so that the rear case 11 is not deformed and the device is not distorted.

After using the air purifier, the operation switch 25
Is turned off, the power cord 28 is disconnected from the outlet, and stored in the storage portion 31 provided between the support protrusions 30, and the vicinity of the distal end is locked by the locking portion 30 a of the support protrusion 30.
At this time, the power cord 28 is connected to the stopper 3
By 2, it is properly stored in the storage section 31.

According to the first embodiment, the middle case 5 and the rear case 11 are attached to the mounting table 20.
Rigidity can be increased as compared with the conventional air purifier. Further, since the rib-shaped support protrusions 30 provided on the table 20 support the main body by the bottom surface portion 14 of the rear case 11,
Robust against external force applied to equipment. Further, the storage portion 31 provided between the support protrusions 30 is a space for appropriately storing the power cord 28, and the stopper 32 is provided in the storage portion 3.
It is possible to prevent the power cord 28 from jumping out of the inside 1.

Embodiment 2 FIG. 3 is a longitudinal sectional view of Embodiment 2 of the present invention. In addition,
The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 19 denotes a lead wire insertion hole provided in the bottom portion 14 of the rear case 11, and reference numeral 22 denotes a screw boss. Reference numeral 21 denotes a cylindrical lead wire insertion hole provided in the mounting table 20, which extends from the top surface 23 of the mounting table 20 to the bottom plate 26 side. And the neck 20 of the table 20
The upper opening 21a of the lead wire insertion hole 21 provided in the top surface portion 23 of a corresponds to the position of the lead wire insertion hole 19 provided in the bottom portion 14 of the rear case 11. The lower opening 21b of the lead wire insertion hole 21 is located closer to the bottom plate 26 than the mounting surface of the control circuit board 27.

The shape of the lead wire insertion hole 21 of the mounting table 20 is, for example, in the vicinity of the upper opening 21a, the wall surface 21c on the front case 1 side forms a curved surface and forms an inclined surface toward the bottom plate 26 side. A vertical wall is formed from the vicinity of the boundary between the neck 20a and the shoulder 20b. On the other hand, the wall surface 21d on the rear case 11 side is moved from the upper surface opening 21a to the lower opening 21b.
To form a vertical wall. Thus, the opening area of the lead wire through-hole 21 becomes smaller from the upper opening 21a toward the lower opening 21b, and becomes cylindrical from the vicinity of the boundary between the neck 20a and the shoulder 20b. Reference numeral 33 denotes a drain hole provided in the bottom plate 26 of the table 11.

The operation of the second embodiment configured as described above will be described. The description of the same parts as those of FIG. 1 will be omitted. The water that has entered from the outlet 17 (see FIG. 1) passes through the air passage 18 between the middle case 5 and the rear case 11, passes through the gap between the middle case 5 and the air passage plate 18a, and leads to the rear case 11. Through the insertion hole 19, it reaches the upper opening 21a provided on the top surface portion 23 of the mounting table 20, and from there through the cylindrical lead wire insertion hole 21 to the lower opening 21b located below the control circuit board 27. Then, the water is discharged to the floor surface through a drain hole 32 provided in the bottom plate 26. At this time, since the water falls while being guarded by the wall surface of the cylindrical lead wire insertion hole 21, the water does not wet the control circuit board 27.

According to the second embodiment, the middle case 5 and the rear case 11 are integrally attached to the mounting table 20, so that the rigidity can be increased as compared with the conventional air purifier. Since the provided rib-shaped support projection 30 supports the main body by the bottom surface portion 14 of the rear case 11, it is robust against external force applied to the device. Further, the storage portion 31 between the support protrusions 30 is a space for appropriately storing the power cord 28, and the stopper 32 is
Can be prevented from jumping out.

A cylindrical lead wire insertion hole 21 extending below the control circuit board 27 from the top surface 23 of the mounting table 20.
Can guide the water flowing into the top surface 23 of the mounting table 20 toward the bottom plate 26 without contacting the control circuit board 27, thereby protecting the control circuit board 27 from entering water.

[0028]

The air purifier according to the present invention has an inner case supporting a filter and having a blower fan motor attached thereto, and a box-shaped inner case in which the vicinity of the opening of the inner case is inscribed near the opening. After forming an air passage having an air outlet between the case and a case having an inlet and attached near the opening of the rear case, a purifier body is formed, and the purifier body is supported by a table. This is an air purifier, with screw bosses protruding from the lower surface of the middle case, screwing the screw into the screw boss by holding the rear case between the screw boss and the mounting table, and fixing them together. As a result, the housing rigidity can be dramatically increased.

Further, the mounting table is formed by a neck portion and a shoulder portion, and a rib-shaped supporting projection is provided at the shoulder portion of the mounting table, the upper end portion of which abuts on or comes close to the rear case. The machine body can be supported, and can be made stronger against external force.

Further, since a plurality of support protrusions are arranged at intervals and a concave storage portion is provided at the shoulder of the mounting table between the support protrusions, the power cord can be stored in this storage portion.

Further, since the convex stopper is provided along the edge of the concave storage portion, the power cord can be prevented from jumping out.

Further, a control circuit board is provided in the mounting table, and the control circuit board and the blower fan motor in the cleaner body are connected by lead wires, and lead wires are connected to the bottom surface of the rear case and the top surface of the mounting table. The insertion hole provided in the mounting table is formed in a cylindrical shape from the top surface of the mounting table to the bottom surface side, and between the upper opening provided in the top surface of the insertion hole and the lower opening provided in the bottom surface. Is longer than the distance between the upper opening and the control circuit board, so that the cylindrical insertion hole that goes downward from the top surface of the table supports the water flowing into the top surface of the table below the control circuit board. The components and the like on the control circuit board can be protected from infiltration at low cost.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of Embodiment 1 of the present invention.

FIG. 2 is a rear view of FIG.

FIG. 3 is a partial longitudinal sectional view of a second embodiment of the present invention.

FIG. 4 is a longitudinal sectional view showing an example of a conventional air purifier.

FIG. 5 is a rear view of FIG. 4;

[Description of Signs] 1 front case, 3 suction port, 5 middle case, 8 filter, 9 blower fan motor, 10 blower fan, 11
Rear case, 17 outlets, 18 air passages, 19, 21
Lead wire insertion hole, 20 mounting table, 20a neck, 20b
Shoulder, 21a upper opening, 21b lower opening, 22
Screw boss, 23 top surface, 24 screws, 27 control circuit board, 29 lead wire, 30 support protrusion, 31 housing, 32 stopper.

Continued on front page (72) Inventor Eiichiro Hanada 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation

Claims (5)

[Claims] An air outlet is provided between a middle case supporting a filter and a blower fan motor, and a box-like shape, wherein an opening near the opening is inscribed near the opening near the opening. An air cleaner that forms a purifier main body by a case after forming an air passage, and a front case and the like having an inlet and attached near an opening of the rear case, and supporting the purifier main body by a table. An air purifier comprising: a screw boss protruding from a lower surface of the middle case; a rear case sandwiched between the screw boss and the mounting table; screws screwed into the screw boss; and these are integrally fixed. . 2. A pedestal is formed by a neck and a shoulder, and a rib-shaped support projection is provided on the shoulder of the pedestal, the upper end of which is in contact with or close to the rear case. Item 7. The air purifier according to Item 1. 3. The air purifier according to claim 2, wherein a plurality of support protrusions are arranged at intervals, and a concave storage portion is provided at a shoulder of the mounting table between the support protrusions. 4. The air purifier according to claim 3, wherein a convex stopper is provided along an edge of the concave storage portion. 5. A control circuit board is provided in the mounting table, and the control circuit board and a blower fan motor in the cleaner body are connected by a lead wire, and the control circuit board is connected to a bottom surface of the rear case and a top surface of the mounting table. An insertion hole for inserting a lead wire is provided, an insertion hole provided in the mounting table is formed in a cylindrical shape from the top surface of the mounting table to the bottom surface, and an upper opening provided on the top surface of the insertion hole and a bottom surface. The air cleaner according to any one of claims 1 to 4, wherein a distance between the provided lower openings is formed longer than a distance between the upper openings and the control circuit board.