TW202024543A - Air cleaning apparatus - Google Patents

Abstract

The present invention conducts effective circulation of air. This air cleaning apparatus 10 includes an air flow path that extends from an opening formed in a lower part of a body casing 12 upward through the interior of the body casing 12, the air flow path opening in the upper surface of the body casing 12. A filter unit 40 that filters flowing air, a blowing fan 56 that is arranged downstream from the filter unit 40 and that blows air upward, and a stator vane 60 that is arranged downstream from the blowing fan 56 and that straightens the air from the blowing fan are arranged inside the air flow path.

Description

Air cleaning device

The present invention relates to an air purifying device that purifies air through a filter unit.

Various air cleaning devices have been sold in the past. The main purpose of these air cleaning devices is to remove house dust, mold, pollen, bacteria, viruses, etc. in the indoor air. Air cleaning devices that use ultraviolet rays, photocatalysts, and negative ions are also known, but the mainstream is to use filters to remove particles Etc.

In Patent Document 1, it is proposed to circulate the air that does not pass through the filter by using two fans, thereby also adding a function as a circulator to purify a wider range of air. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] JP 2013-217580 A

[The problem to be solved by the invention]

Although the air cleaning device described in Patent Document 1 can perform effective air cleaning, it is expected to be more efficient and highly functional. [Means to solve the problem]

The air purifying device of the present invention includes: a main body casing; a tunnel-shaped suction passage, which penetrates from the front surface suction opening provided on the lower part of the front surface of the main body casing to the back suction opening provided on the lower back surface of the main body casing Air opening; and a longitudinal air passage, which starts from the opening formed on the upper side of the suction passage, extends upward from the inside of the body casing, opens on the upper surface of the body casing, and is arranged in the air passage : Filter unit, which is installed to block the above-mentioned air passage to filter the circulating air; a blower fan, which is arranged above the above-mentioned filter unit and blows air upward; and static blades, which are arranged above the above-mentioned blower fan , To rectify the air from the aforementioned blower fan.

Furthermore, the outside air sucked in from the front surface suction opening and the back surface suction opening is filtered by the filter unit, and then discharged to the outside.

The air flow path between the filter unit and the blower fan is formed by a tubular wall arranged inside the main body casing, and the space between the outer side of the wall and the main body casing accommodates and mounts the control of the blower fan The circuit board of the driving circuit.

The stator blade concentrates the air flow sent by the air blowing fan in the center direction, making it an air flow with a small expansion of the air flow cross section. [Effects of Invention]

According to the present invention, a relatively strong air flow can be discharged upward, thereby enabling efficient air circulation in the room.

Hereinafter, an embodiment of the present invention will be described based on the drawings. In addition, the present invention is not limited to the embodiment described here.

"Overall Composition" Fig. 1 shows the appearance of an air purifier according to an embodiment. The air cleaning device 10 has a quadrangular column shape as a whole. The main body shell 12 covers the peripheral part of the side and upper surface.

A front surface suction opening 14 is formed at the lower part of the front surface of the main body casing 12. As described below, the front surface suction opening 14 is an opening on the front surface of the tunnel-shaped suction passage 16 with a quadrangular cross section. The suction passage 16 penetrates to the back surface, and the back suction opening 14 is formed on the back side (rear). Air opening 30 (refer to Figure 2).

A circular fan cover 18 is detachably provided on the upper surface of the main body casing 12, and an exhaust opening 20 is formed here.

Furthermore, a recess 22 for an armrest for the user to lift by hand is formed in the longitudinal middle part of the left and right side surfaces of the main body casing 12 (only the right side is shown in FIG. 1). In addition, a plurality of switch buttons 24 for operation are provided on the front surface side corner of the upper surface of the main body casing 12.

Figures 2 and 3 are diagrams showing the internal structure of the air purifier. Figure 2(a) is a top view, and (b) is a front view when the plane passing through a point chain line (front-rear direction) in (a) is cut , (C) and (d) are the three-dimensional views when cut at the plane passing through the one-point chain line (front-rear direction) in (a), Figure 3 (a) is the top view, (b) is in (a) The front view when cutting through the one-point chain line (left and right direction), (c) and (d) are the three-dimensional views when cutting through the one-point chain line (left and right direction) in (a) .

As described above, the back side suction opening 30 is formed on the back side of the suction passage 16. In addition, the upper side of the suction passage 16 is greatly opened, and a longitudinal air passage 32 is formed here. In addition, an illuminating unit 34 is provided on the upper side of the back side of the intake passage 16. A plurality of LEDs are arranged substantially across the entire width of the illuminating section 34 in the left-right width direction, and light is irradiated obliquely forward, thereby supplying light to substantially the entire air intake passage 16.

A filter unit 40 is arranged on the air passage 32. The filter unit 40 is installed to block the air passage 32, and the air from the air passage 32 is filtered by the filter unit 40 to be purified. The filter unit 40 is a pleated dust-collecting filter (a filter for removing garbage, dust, etc.) formed by folding a long thin filter material and a deodorizing filter with activated carbon or catalyst substances attached to the fiber material (Filter that absorbs odor-producing substances) Two-stage structure, the two are integrated and can be removed. That is, the part of the body casing 12 on the back side corresponding to the filter unit 40 is detachable, and the filter unit 40 can be pulled out on the back side. Furthermore, it is also preferable to install a pre-filter for simple filtering in the lowermost part of the filtering unit 40.

The upper portion (downstream side) of the filter unit 40 becomes an air passage 42 which is formed in a wedge shape toward the upper side and has a smaller cross-sectional area. That is, the tubular wall 44 forming the air passage 42 gradually approaches the inner side of the main body casing 12. In addition, a fan cover 48 is provided at the narrowed portion (small diameter portion). The fan cover 48 is formed by connecting concentric plates with radial plates, and is protected by separating the space to prevent the intrusion of human hands from below.

In addition, a circuit board 46 is arranged in the space between the wall 44 and the main body casing 12. The circuit board 46 is equipped with a circuit for controlling the power supply to the fan motor 50 according to the operation of the switch button 24 and a circuit for controlling the lighting of the lighting unit 34. In addition, a dust sensor and a gas sensor are mounted on the circuit board 46, and the fan motor 50 or the lighting unit 34 is also controlled according to the detection results of these sensors. Furthermore, in this embodiment, there is also an illuminance sensor that detects the brightness of the surrounding area. When the surrounding area is dark, the rotation speed of the fan motor can be reduced to achieve silence. The illuminance sensor only needs to be arranged on the upper surface of the main body shell 12.

The air passage 42 above the fan cover 48 expands in a wedge shape, and a fan motor 50 is provided on the upper part thereof. The fan motor 50 is fixed to the center portion of the air passage 42 by a supporting member 52. Furthermore, the support member 52 has openings, which basically does not hinder the circulation of air.

The fan motor 50 rotates the rotating blade 54 to generate an air flow. The fan motor 50 and the rotating blades 54 constitute a blower fan 56. The rotating blade 54 is an axial flow type, and the blower fan 56 is an axial flow fan. The blower fan 56 sucks the air from the air passage 42 and supplies it upward. That is, the air from the intake passage 16 passes through the filter unit 40 and blows upward.

A stator blade 60 for rectifying the air flow from the blower fan 56 is arranged above the rotating blade 54. The stationary blade 60 is composed of a dome body whose center bulges upward and a plurality of blades extending from the dome body in the radial direction, so that the air flow sent by the rotating blade 54 is concentrated in the center direction.

A fan cover 18 is arranged on the upper surface of the main body casing 12 above the stationary blade 60. The overall shape of the fan cover 18 is circular, and a plurality of radial rods are provided to prevent the entry of hands or various objects.

In this type of air cleaning device 10, by driving the fan motor 50, the rotating blade 54 rotates to form an upward air flow. The air flow path through the suction passage 16, the air passage 32, the filter unit 40, the rotating blade 54, the stator blade 60, and the fan cover 18 is formed in the main body casing 12. As shown in FIG. 4, the suction opening 14 from the front surface, The air in the room sucked by the back air suction opening 30 passes through the air flow path and is sent upward.

"Configuration of Illumination Unit 34" FIG. 5 shows the structure of the lighting unit 34. Figure 5 (a) is a view from the front, (b) is a view from the upper side of the air intake passage 16 (showing a part of the illuminating part), and (c) is a cross-section cut at the front and rear surfaces之图.

The illuminating part 34 has a semi-cylindrical transparent cover 100, and its upper part is fixed to the back part of the main body casing 12 behind the air intake passage 16. A plate-shaped LED substrate 102 is arranged in the internal space of the transparent cover 100 to extend in the left-right direction. The surface of the LED substrate 102 faces diagonally forward and downward. In addition, a plurality of LED elements 104 are arranged at intervals in the lateral direction of the LED substrate 102. Therefore, by causing a plurality of LED elements 104 to emit light, light can be emitted to the lower and front sides thereof, and light can be supplied to substantially the entire air intake passage 16. Furthermore, power is supplied to the LED element 104 from the circuit board 46.

"Illumination Control in Illumination Section 34" The illuminating part 34 can adjust the luminous intensity of the LED element 104 by the signal from the circuit board 46. That is, the brightness of the illumination to the air intake passage 16 can be changed.

6(a) to (d) show the lighting state of the lighting unit 34. (A) is the state of light-off, (b) is just after lighting, (c) is the state of a little time after lighting, (d) is the state of full lighting (maximum illuminance). Therefore, as shown in Figure 6 (a) ~ (d), by gradually increasing the intensity of the illumination, it is possible to simulate the state where the illumination moves from the back to the front. In this way, it is possible to simulate movement without using mechanical movement means, so there will be no unwanted sounds and no problems such as wear. And the design is also excellent.

In addition, gradually changing the lighting intensity and changing the lighting range area, so that the dust in the air in the suction passage 16 can be easily recognized with a predetermined brightness everywhere in the changing area. Therefore, the user can easily recognize the state of dust.

For example, by turning on the power switch and starting the illumination of the illuminating unit 34 right after the air cleaning device 10 is activated, the change from the off state to the illumination state of the maximum illuminance can be repeated once or a predetermined plurality of times.

After that, with the illuminance corresponding to the blowing intensity (fan intensity) of the blowing fan set by the user's operation, the lighting continues during the operation.

As described below, the fan intensity has multiple levels (at least 3 levels). According to the fan intensity, the greater the fan intensity, the greater the illumination intensity of the lighting unit 34.

In addition, when the blowing mode is changed, the luminous intensity is temporarily weakened, and then the luminous intensity corresponding to the mode is set. By this, it can be reliably recognized that the operation has been performed.

Furthermore, when the state of staying in a predetermined lighting state has passed a predetermined time, the illuminance can also be changed as described above. Furthermore, in the case of continuous operation for a predetermined time, the light can be turned off, and when the light-off time has passed a predetermined time, the light can be lighted at a predetermined intensity or the illuminance can be changed as described above.

Here, as described below, regarding the air supply mode, in addition to the manual setting of the fan strength of "strong", "medium" and "weak", there is an "automatic mode" that automatically changes the fan strength. In this automatic mode, when the fan intensity is changed, after temporarily reducing the lighting intensity, it can be set to the lighting intensity corresponding to the set fan intensity. In this way, the user can easily recognize that the fan strength has been automatically changed. Users can expect changes.

"Configuration of Filter Unit 40" The filter unit 40 can be taken out to the outside as described above. FIG. 7 shows the state of taking out the filter unit 40, (a) shows the state of taking out, and (b) shows the action of taking out the deodorizing filter from the filter unit 40.

As described above, the dust collecting filter 110 and the deodorizing filter 114 are housed in the filter frame 112. In addition, as shown in Fig. 7(a), the back part of the main body casing 12 corresponding to the filter unit 40 becomes a detachable cover 118. By removing the cover 118, the filter unit 40 can be integrated into and out of the main body casing. 12 inside and outside. Therefore, the filter unit 40 can be removed as needed, and the filter can be cleaned and replaced, or the filter can be replaced. Here, as shown in FIG. 7( b ), the periphery of the deodorizing filter 114 is supported by the step difference of the inner wall of the filter frame 112. In addition, a baffle 116 is rotatably attached to the upper end of the proximal wall of the filter frame 112. By rotating the baffle 116 from the proximal side to the inner side, the front end of the baffle 116 is caught on the upper surface of the proximal side of the deodorizing filter 114 to sandwich the deodorizing filter 114. On the other hand, by rotating the baffle 116 from the inner side to the near side, the front end of the baffle 116 is separated from the deodorizing filter 114, and the deodorizing filter 114 can be taken out from the filter frame 112.

"The structure of the insertion part of the filter unit 40" 8 (a) ~ (d) show the structure of the insertion part of the filter unit 40. (A) is the internal state of the filter unit 40 inserted in the main body casing 12, (b) is the internal state of the filter unit 40 taken out of the main body casing 12, (c) is the filter unit taken out of the main body casing 12 The perspective view of the state of 40, (d) is a diagram showing the internal structure of the support unit.

The space in the body casing 12 into which the filter unit 40 is inserted is slightly larger than that of the filter unit 40. In addition, by pushing up the frame-shaped upper end surface of the filter unit 40 (the upper end of the filter frame 112), it is possible to airtightly connect (seal) to the upper air passage 42.

To this end, supporting units 120 are arranged at the left and right ends of the lower side of the space in the body casing 12 into which the filter unit 40 is inserted. The supporting unit 120 includes: a pair of spring units 122 including springs in the vertical direction, a pair of supporting bodies 124 for suppressing movement in the vertical direction below a predetermined value, and an upper surface plate 126 forming an upper surface.

The upper surface plate 126 becomes an inclined part on the near side and the back side, and the middle part becomes a flat part. Therefore, when the filter unit 40 is inserted from the back side, first the lower end of the front part of the filter unit 40 is in contact with the inclined part of the upper surface plate 126, and then the filter unit 40 is pressed in, whereby the support unit 120 resists the spring force. Move down. Therefore, when the insertion of the filter unit 40 is completed by pressing the filter unit 40 to the front side in this state, the filter unit 40 is released and the spring force of the support unit 120 pushes the filter unit 40 upward. .

In addition, when the filter unit 40 is taken out, since the support unit 120 can also move downward, it can be taken out easily. Furthermore, the bottom of the filter unit 40 is the suction port of the external air connected to the suction passage 16, and does not need to be sealed.

"The composition of the rotating blade 54 and the stationary blade 60" FIG. 9 shows an example of the structure of the rotating blade 54. As described above, a plurality of blades 132 are installed on the periphery of the cylindrical core 130 in the center. The blade 132 extends obliquely downward from the upper end at the inner end, and the outer end is located at the inner periphery of the cylindrical passage with a slight gap. The center part of the core material 130 is fixed to the rotating shaft of the fan motor 50. The rotating blade 54 is of an axial flow type, and the axial air flow is generated by the rotation of the rotating blade 54.

FIG. 10 shows the structure of the stator blade 60, (a) is a perspective view, and (b) is a plan view. A dome 142 bulging upward is arranged at the center of the cylindrical outer wall 140, and a plurality of plates 144 extending in the radial direction are arranged between the outer wall 140 and the dome 142. The surface of each plate 144 is inclined at a predetermined angle with respect to the axial direction (inclination in the same direction) and slightly inclined. Thereby, the air flow including the rotating air flow generated by the rotation of the rotating blade 54 is corrected by the stator blade 60 to become a linear air flow and sent upward.

Fig. 11 shows the streamlines of the air flow (analysis results) in the case with the stator blade 60 and the case without the stator blade 60. The air flow in the circumferential direction is suppressed by the stator blade 60, thereby generating a relatively straight air flow facing upward.

As described above, by rectifying the rotating airflow, the air supply volume of the air cleaner increases, and the indoor air can be cleaned more efficiently.

"Automatic mode" The air purifier 10 of the embodiment has an automatic mode. In this automatic mode, the rotation speed of the rotating blade 54 and the like are controlled according to the detection results of various sensors.

When the amount of surrounding dust detected by the dust sensor is large, the strength of the blower fan can be increased to compare the amount of gas (corresponding to the intensity of the odor) detected by the gas sensor In many cases, the strength of the blower fan can be increased.

In addition, when the illuminance sensor detects that the surroundings are dark, it is determined that it is in bed, and the fan strength is restricted in order to reduce the operating sound (for example, the fan strength is prohibited from becoming stronger).

Furthermore, in the manual mode, the user can select the fan strength through button operation.

Here, when the detection values of the dust sensor and the gas sensor are obtained separately, the higher of the fan strength obtained from the detection values of the two sensors may be used.

Moreover, the deodorizing filter 114 cannot remove all kinds of odors that react with the gas sensor. Therefore, when the detection value obtained by the gas sensor is higher and the fan strength is set to be higher, it is preferable to sequentially decrease the fan strength after a certain time has passed. For example, when the fan intensity level corresponding to the detection value of the gas sensor is strong, it can be sequentially reduced to medium, weak, idling, etc. at a predetermined time.

For example, the fan strength can be set to three levels of strong, medium, and weak.

When it is desired to clean the air in the room in a short period of time, it is also preferable to select the spray cleaning mode through the operation of the user, so that the fan operates at a high speed for a predetermined time.

10: Air cleaning device 12: body shell 14: Suction opening on the front surface 16: Inspiratory path 18, 48: fan cover 20: Exhaust opening 22: recess 24: switch button 30: suction opening on the back 32: Air passage 34: Lighting Department 40: filter unit 42: Air passage 44: wall 46: Circuit board 50: fan motor 52: Support material 54: Rotating blade 56: Supply fan 60: static leaves 100: transparent cover 102: substrate 104: LED components 110: Dust collection filter 112: filter box 114: Deodorizing filter 116: bezel 118: cover 120: Support unit 122: spring unit 124: Support 126: upper surface plate 130: core material 132: Blade 140: Outer Wall 142: round top 144: Plate

Fig. 1 is a diagram showing the appearance of an air purifier according to an embodiment. Figure 2 is a diagram showing the internal structure of the air cleaning device, (a) is a top view, (b) is a front view when the plane passing through a point chain line (front and back direction) in (a) is cut, (c) , (D) is a three-dimensional view of the situation when it is cut at the plane passing through a point chain line (front-rear direction) in (a). Figure 3 is a diagram showing the internal structure of the air purifying device, (a) is a top view, (b) is a front view when the plane passing through a point chain line (left and right direction) in (a) is cut, (c) , (D) is a three-dimensional view of the case of cutting at a plane passing through a point chain line (left and right direction) in (a). Fig. 4 is a diagram showing the air flow (air flow path) in the air cleaning device. Fig. 5 is a diagram showing the structure of the illuminating part 34, (a) is a view from the front, (b) is a view from the inside of the air intake passage 16 (showing a part of the illuminating part), and (c) is a view A view of the cross-section cut at the front-rear direction. Fig. 6 is a diagram showing the lighting state of the lighting unit 34, (a) shows the off state, (b) shows the state just after lighting, (c) shows the state after a little time has passed after lighting, and (d) shows the state of full lighting (Maximum illuminance) status. 7 is a diagram showing the state of taking out the filter unit 40, (a) shows the state of taking out, (b) shows the action of taking out the deodorizing filter from the filter unit 40. 8 is a diagram showing the structure of the insertion part of the filter unit 40 and the support unit 120, (a) is the internal state of the filter unit 40 inserted into the main body casing 12, (b) is the filter taken out from the main body casing 12 The internal state of the unit 40, (c) is the state in which the filter unit 40 is taken out from the main body casing 12, and (d) is a diagram showing the internal structure of the support unit. FIG. 9 is a diagram showing a configuration example of the rotating blade 54. FIG. 10 is a diagram showing the structure of the stationary blade 60, (a) is a perspective view, and (b) is a plan view. Fig. 11 is a diagram showing the streamlines (analysis results) of the air flow, (a) shows the case with the stator blade 60, and (b) shows the case without the stator blade 60.

10: Air cleaning device

12: body shell

14: Suction opening on the front surface

16: Inspiratory path

18, 48: fan cover

20: Exhaust opening

30: suction opening on the back

32: Air passage

34: Lighting Department

40: filter unit

42: Air passage

44: wall

46: Circuit board

50: fan motor

52: Support material

54: Rotating blade

56: Supply fan

60: static leaves

Claims (3)

An air cleaning device, including: Body shell A tunnel-shaped suction passage, which penetrates from the front surface suction opening provided at the lower part of the front surface of the main body casing to the back suction opening provided at the lower back surface of the main body casing; and A longitudinal air passage, which starts from the opening formed on the upper side of the suction passage, extends upward from the inside of the main body casing, and opens on the upper surface of the main body casing; Configure in the above air passage: The filter unit is installed in such a way as to block the above-mentioned air passage to filter the circulating air; A blower fan, which is arranged above the filter unit and blows air upward; and The static blades are arranged above the air supply fan and rectify the air from the air supply fan; After filtering the external air sucked in from the front surface suction opening and the back surface suction opening by the filter unit, it is discharged to the outside. The air cleaning device according to claim 1, wherein: The air passage between the filter unit and the blower fan is formed by a tubular wall arranged inside the body casing, In the space between the outer side of the wall and the main body casing, a circuit board equipped with a circuit for controlling the driving of the blower fan is accommodated. The air cleaning device according to claim 1 or 2, wherein: The stator blade concentrates the air flow sent by the air blowing fan in the center direction, making it an air flow with a small expansion of the air flow cross section.

Images