JP2564286B2 - Air purifier - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a configuration of a mounting portion of a multi-blade blower to an air cleaning device, and is particularly suitable for obtaining vibration damping performance without increasing a height dimension. Air purifier.

[Conventional technology]

In the conventional air purifying device in which a multi-blade blower is incorporated in a pressure chamber, the scroll is directly fixed to the ceiling plate portion above the pressure chamber in order to reduce the height dimension.

Devices related to this type of device include, for example, JP-A-58-110938, JP-A-60-196535, and JP-A-60-17.
3837 etc. are mentioned.

[Problems to be solved by the invention]

The above-mentioned prior art does not consider the transmission of scroll vibration due to the wind pressure of the air flow blown out from the impeller of the multi-blade blower, and there is a problem that the air purifier often vibrates.

An object of the present invention is to prevent the vibration of the scroll from being transmitted to the pressure chamber due to the wind pressure of the air flow blown out from the impeller of the multi-blade blower without increasing the height dimension, and to provide a low-vibration thin air cleaning device. To get.

[Means for solving problems]

The present invention provides an air purifying device including a filter, a pressure chamber arranged on the upstream side of the filter, and a multi-blade blower for blowing air into the pressure chamber. The pressure chamber includes a case for storing the chamber therein, and the pressure chamber has a first opening for storing a multiblade blower at its upper end surface and a second opening for supplying pressurized air to the filter at its lower end surface. The multi-blade fan has an impeller and the impeller, and a scroll having an outlet formed in a direction substantially tangential to the rotation of the impeller and an electric motor that is stored in the scroll and rotates the impeller. The suction port of the impeller is formed to partition the inside and outside of the scroll, and the impeller rotates in a horizontal plane with a partition plate that supports the electric motor inside the scroll. Stored in the pressure chamber to,
The partition plate is held by the anti-vibration rubber at a position substantially flush with the upper end face of the pressure chamber, and the gap between the partition plate and the upper end face of the pressure chamber is closed by the plate-like elastic body to substantially prevent the gap. The ceiling of the pressure chamber is formed in the case, and the case has a third opening formed on the bottom surface thereof for blowing out the air that has passed through the filter, and along the side surface of the filter and the pressure chamber in the vicinity of the third opening. The extending stud is fixed, and the end face of the filter on the downstream side is held at the periphery of the third opening,
The lower end surface of the pressure chamber is in contact with the upstream end surface of the filter with the second opening communicating with the filter, and is fastened by a stud so that the filter is sandwiched between the lower end of the pressure chamber and the bottom surface of the case. It is characterized by being configured.

[Operation] Since the multiblade fan is arranged so that the impeller rotates in a horizontal plane, and the partition plate supports the electric motor in a state of being located inside the impeller, it is possible to suppress the dimension in the height direction of the multiblade fan. You can The partition plate is held by the anti-vibration rubber at a position substantially flush with the upper end face of the pressure chamber, and the gap between the partition plate and the upper end face of the pressure chamber is closed by the plate-like elastic body to substantially prevent the gap. Since the ceiling of the pressure chamber is formed on the inside of the multi-blade fan, it is possible to prevent the multi-blade blower from protruding from the pressure chamber and suppress the height dimension of the pressure chamber when the multi-blade blower is installed. Can be effectively prevented from being transmitted to the pressure chamber. Since the gap between the partition plate and the upper end surface of the pressure chamber is closed by the plate-like elastic body, it is possible to prevent vibration transmission and maintain the pressure in the pressure chamber without increasing the size in the height direction. Further, the lower end surface of the pressure chamber abuts on the upstream end surface of the filter, and is clamped by the studs to sandwich the filter between the lower end of the pressure chamber and the bottom surface of the case. The size can be suppressed. Since the case has an air intake port on the upper surface and stores the filter and pressure chamber inside, the air flow path from the air intake port to the intake port of the impeller of the multi-blade fan is shortened, and duct loss is reduced. The outer pressure of the filter can be maintained at a negative pressure, and even if air leaks, it is possible to prevent the air that has not passed through the filter from flowing out of the air cleaning device.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 17.

1 to 15 show a first example of the present invention. FIG. 1 is a side sectional view showing the structure of an air cleaning device having a fan 1 unitized as a blower, and the plane of the fan 1 and the cross section of the scroll portion are shown in FIGS. 2 and 3, respectively.
The side cross section of the air cleaning device in a direction different from that of Fig. 1 by 90 ° is
Each is shown in the figure. The fan 1 includes a motor 2, an impeller 3,
The scroll 4, a fan base 6 as a partition plate, a plate-like joint 7 as a plate-like elastic body, a chamber 8 as a pressure chamber, and a vibration-proof rubber 9 are included. As shown in FIGS. 1 and 4, the chamber 8 has a first opening for accommodating the motor 2, the impeller 3, the scroll 4, etc. on its upper end surface and a filter 10 with pressurized air on its lower end surface. Respectively have second openings for supplying. As shown in FIGS. 1 and 4, the fan base 6 is held by a vibration-proof rubber 9 at a position substantially at the same height as the upper end surface of the chamber 8, and the fan base 6 and the upper end surface of the chamber 8 are held together. The gap between and is closed by the plate joint 7 and substantially forms the ceiling of the chamber 8. The motor 2 attached to the fan base 6 via the stay 2a has an impeller 3 fixed on its shaft. The motor 2 may be attached to the stay 2a via a vibration isolating member, which can improve the vibration isolating effect. In FIG. 3, when the impeller 3 is rotated in the arrow direction by the driving force of the motor 2, the air sucked from the gap between the motor 2 and the impeller 3 passes through the impeller 3 and scrolls. 4 is released. The released air is decelerated in the scroll 4, is collected, and is discharged into the chamber from the blowout port 5. Case
As shown in FIG. 1, 30 has a third opening formed on the bottom surface thereof for blowing out the air that has passed through the filter 10, and the filter 10 holds the downstream end face at the periphery of the third opening. As a result, the discharged air flows through the gap between the scroll 4 and the filter 10, passes through the filter 10, and is discharged as clean air. In this embodiment, even if air leaks from the connecting portion between the chamber 8 and the filter 10, it is housed in the case 30 and fixed by the stud 32 so as not to affect the outside. The pre-filter 34 is attached to the upper part of the case 30, and the blower 1 and the case
The space between 30 and 30 is maintained at a negative pressure when the blower is operating.
As shown in FIG. 3, two outlets 5 of the scroll 4 are provided in this embodiment as shown in FIG. 3 in order to prevent unevenness of the blowing speed of the clean air blown out from the filter 10. However, the modification of FIG. As shown in the example, the number of outlets 5 may be four.

In FIG. 4, the scroll 4 is fixed so as to be in close contact with the fan base 6. In this embodiment, the fan base 6
Is installed in the chamber 8 in order to improve the vibration isolation effect.
The vibration-proof rubber 9 may be omitted when the plate-like joint 7 has sufficient strength.

The gap between the fan base 6 and the chamber 8 is defined by the plate-shaped joint 7
It is sealed by and prevents the pressurized air in the chamber 8 from leaking to the outside. Since the plate-shaped joint 7 freely expands and contracts due to the vibration of the fan base 6, the motor 2
Vibration of the above is not transmitted to the chamber 8. Modification examples of the material and shape of the plate joint 7 are shown in FIGS. 6 to 11. FIG. 6 shows an example of the flat plate-like joint 11 made of flexible plastic such as nylon or vinyl or rubber.

FIG. 8 shows an example of the bellows-like joint 12, and FIG. 10 shows an example of the packing-like joint 13.

Next, an example in which the air blower of this embodiment is attached to filters having different shapes will be described. In the air blower of this embodiment, if the nut of the vibration proof rubber 9 is removed, the fan base 6 is
Since the scroll 4 can be integrally removed, even when the rectangular filter 14 as shown in FIGS. 12 and 13 is used, the other parts can be made common only by preparing the rectangular chamber 15.

Further, as shown in FIG. 14, a thin filter 16 may be used instead of the filter 10.

Next, an example in which the air blower of this embodiment is attached to a filter via a sound absorber will be described. FIG. 15 shows chamber 8
A case where a noise absorber 17 is inserted between the filter 10 and the filter 10 to reduce the noise value is shown. The sound absorbing material 18 is made of glass fiber or the like and is fixed to the sound absorbing device 17. According to this modification, the noise generated from the impeller 3 can be absorbed and attenuated, and the noise can be reduced.

A second embodiment of the present invention will be described with reference to FIGS. 16 and 17. In this embodiment, the blower device 101 includes a motor 102, an impeller 103, a scroll 104, and a fan base 10 that is a partition plate.
6, plate-like joint 107 that is an elastic member, chamber that is a pressure chamber
108, and a vibration-proof rubber 109. Fan base
The 106 is formed in a substantially square plate shape, and a substantially octagonal hole 106a is formed in a substantially central portion thereof. Fan base 106
The scroll 104 is fixed to the inner surface side of the by welding or the like.

The scroll 104 is provided with two outlets 105 so as to be point-symmetrical with respect to the center thereof, and a substantially octagonal hole is provided at the substantially central portion thereof.
105a is provided. The hole 105a is set so that the dimension between the opposite sides is larger than the outer diameter of the impeller 103 stored in the scroll. A bell mouth 115 is fastened to the surface side of the hole 105 with a screw. Motor 102 stays on bell mouth 115
It is fixed via 102a. When assembling, the motor 10
2 to the bell mouth 115 in advance, and runner 10
The impeller 103 to which 3a is attached is fixed to its shaft. The fan base 106 is stored in the chamber 108 with the scroll 104, the motor 102, and the impeller 103 attached, and the fan base 106 and the chamber 108 are connected by a plate-like joint 107. In this embodiment, the plate-like joint 107 is fixed to the chamber 108 and the fan base 106 in a substantially airtight manner by the contact plates 107a and 107b, respectively. Further, in the present embodiment, the seat 108a provided on the inner surface of the chamber 108 is provided with the anti-vibration rubber 109 to improve the anti-vibration performance.
The fan base 106 is connected via.
A vibration-damping member may be provided between the motor 102 and the stay 102a, which can effectively prevent the vibration of the motor 102 and the impeller 103 from being transmitted to the fan base 106, and thus the vibration-damping performance can be improved. Can be further improved.

According to the above embodiment, it is possible to provide a common thin fan for various types of filters having different thicknesses, sizes, and collection efficiencies, and easily cope with the allowable noise level and the allowable vibration level. There is an effect that can be done.

〔The invention's effect〕

According to the present invention, it is possible to prevent the vibration of the scroll from being transmitted to the pressure chamber due to the wind pressure of the air flow blown out from the impeller of the multi-blade blower without increasing the height dimension of the air cleaning device. The effect is to obtain an air cleaning device with low vibration in a shape.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a structure of a main part of an air cleaning device according to a first embodiment of the present invention, FIG. 2 is a plan view of the air cleaning device of this embodiment, and FIG. 3 is a plan view showing a scroll portion. A sectional view, FIG. 4 is a side sectional view in a direction different from that of FIG. 1 by 90 °, FIG. 5 is a plan sectional view showing a modified example of the scroll in this embodiment, and FIGS. 6 and 7 show elastic members respectively. A plan view and a side sectional view showing a first modified example, FIGS. 8 and 9 are respectively a plan view and a side sectional view showing a second modified example of the elastic member, FIG. 10 and FIG. 11 are elastic respectively. A plan view and a side view showing a third modified example of the member, FIGS. 12 and 13 are plan views and side sectional views showing a modified example of the present example using a rectangular filter, and FIG. 14 is a thin view. FIG. 15 is a side sectional view showing a modification of this embodiment using a filter, and FIG. 15 shows a filter mounted through a sound absorbing chamber. FIG. 16 is a side sectional view showing a modified example of the present embodiment, FIG. 16 and FIG. 17 are a partial sectional plan view and a side sectional view showing the configuration of the air cleaning apparatus in the second embodiment of the present invention. is there. 3,103: Multi-blade blower, 4,104: Scroll, 6,106: Partition plate,
7,11,12,13,107: Elastic member, 8,15,108: Pressure chamber.

Claims (1)

(57) [Claims] 1. An air purifying apparatus comprising a filter, a pressure chamber disposed upstream of the filter, and a multi-blade blower for blowing air into the pressure chamber, wherein an air intake port is provided on an upper surface of the filter. And a case for storing the pressure chamber therein, the pressure chamber having a first opening for storing the multiblade blower at an upper end surface and a lower end surface for supplying pressurized air to the filter. Each of the multi-blade blowers has a second opening, and the multi-blade blower stores the impeller and the impeller, and the scroll has an outlet formed in a substantially tangential direction of rotation of the impeller and the scroll. The scroll for rotating the impeller and the suction port for the impeller are formed to partition the inside and outside of the scroll and the electric motor is positioned inside the impeller. The impeller has a partition plate supported therein and is housed in the pressure chamber so as to rotate in a horizontal plane, and the partition plate is vibration-isolated at a position which is qualitatively the same height as the upper end face of the pressure chamber. The gap between the partition plate and the upper end surface of the pressure chamber, which is held by rubber, is closed by a plate-like elastic body to substantially form a ceiling portion of the pressure chamber, and the case has the above-mentioned bottom surface thereof. A third opening for blowing out the air that has passed through the filter is formed, and a stud extending along the side surface of the filter and the pressure chamber is fixed near the third opening, and the filter is located on the downstream side. The end surface is held at the peripheral edge of the third opening, and the lower end surface of the pressure chamber is brought into contact with the upstream end surface of the filter by bringing the second opening into communication with the filter and by the stud. Wear has been air cleaning apparatus characterized by being configured to sandwiched between the pressure chamber bottom and upper casing bottom the filter.