JP3248469B2 - Wind direction adjustment device and air cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaning device and a wind direction adjusting device for adjusting a direction of air blown from a housing of the air cleaning device or the like.

[0002]

2. Description of the Related Art A wind direction adjusting device includes a plate-shaped louver provided at an air outlet of a housing of, for example, an air purifying device for deflecting and regulating the direction of blown air. In some cases, the inclination of the louver can be changed by a driving mechanism including a motor or the like, so that the direction of the regulated blown air can be changed continuously.

[0003]

When the amount of the blown air increases, noise may be generated when the louver deflects the blown air. In particular, when the deflection angle is large, noise tends to increase. Further, when the amount of the blown wind increases, an unpleasant draft feeling caused by the blown wind may be given to the user.

Accordingly, an object of the present invention is to solve the above-mentioned technical problems and to provide a wind direction adjusting device capable of suppressing noise when the amount of blown air is large, and an air purifying device provided with the same. is there.

[0005]

In order to achieve this object, a wind direction adjusting device according to the first aspect of the present invention is provided at an outlet so as to be displaceable so as to vary the deflection angle of the blown wind, and is provided from the outlet. predetermined and direction regulating member for regulating the direction of the outlet air, and a drive mechanism for displacing the wind regulating member, the wind direction adjustment and control means for controlling the drive mechanism, the control means, the wind direction regulating member Within the fluctuation range of
Reciprocating displacement and when the air volume of the blowing air is large
The width of the deflection angle fluctuation range is set when the amount of blown air is small.
The drive mechanism is controlled so that the deflection angle is smaller than the width of the variation range of the deflection angle and the deflection angle is in accordance with the amount of blown air.

According to this configuration, the following operation is achieved.
That is, since the blowing wind can be set to the deflection angle corresponding to the air flow, the blowing wind can be finely adjusted, and thus, for example, noise at a large air flow can be reduced. In addition, large airflow
Since the width of the direction angle fluctuation range is reduced, the fluctuation range
The largest deflection angle can be reduced
You. As a result, excessive deflection of the blowing wind can be prevented,
The above-described noise can be more reliably reduced. Big
The largest deflection angle in the fluctuation range when the air volume is
The largest deflection angle in the range of fluctuations at small airflow
It is more preferable that the distance can be reduced. The deflection angle of the blown wind is an angle formed between the flow direction immediately before the blown wind passes through the wind direction regulating member and the flow direction immediately after the blown wind, and may include a case of 0 degree.

According to a second aspect of the invention, there is provided a wind direction adjusting device.
Can be displaced to the outlet to make the deflection angle of the blowing wind different
Wind direction that regulates the direction of wind blown from the outlet
A regulating member and a drive mechanism for displacing the wind direction regulating member
And a control means for controlling the driving mechanism, wherein the control means changes the wind direction regulating member to a predetermined change.
Reciprocating displacement in the movement range, and large
The width of the deflection angle fluctuation range when the
Is smaller than the width of the deflection angle fluctuation range
One, the deflection angle at which the air volume of the air blown is large, driving as air volume blown air is less than the deflection angle when made small
It is characterized by controlling the moving mechanism . According to this configuration, the following operation is achieved in addition to the operation of the first aspect. That is, since the deflection angle at a large air volume can be reliably reduced, noise generated at a large air volume and a large deflection angle can be reliably reduced.

[0008] The magnitude relationship of the deflection angle with respect to the magnitude of the air volume of the blown wind is, for example, the magnitude relationship between the deflection angle at the maximum air volume of the blown wind and the deflection angle at the minimum air volume of the blown wind. If there is. A wind direction adjusting device according to a third aspect of the present invention is the wind direction adjusting device according to the first or second aspect, wherein the control means determines that the operating air volume is less than the maximum air volume in advance.
When the air volume falls below the specified value, stop the drive mechanism.
It is characterized in that

In general, when the air volume decreases, the noise caused by the wind increases.
This is caused when the wind direction regulating member is driven because the sound is reduced.
Drive noise tends to be loud and jarring
is there. Therefore, with the above configuration, the air volume is relatively small.
When the drive mechanism is stopped,
Make sure that the generation of harsh noise caused by sound is suppressed.
Was. Further, the control means is provided for stopping the driving mechanism.
When the operation to drive the drive mechanism is not accepted
In this case, the above-mentioned effects are surely obtained and
No.

[0010] The air purifying apparatus of the invention according to claim 4 is as follows.
A wind direction adjusting device according to any one of claims 1 to 3, and a housing having an outlet on an upper surface provided with the wind direction adjusting device.

According to this configuration, any one of claims 1 to 3 is provided.
In addition to the functions of the invention described in Crab , the following functions are provided.
That is, at the outlet on the upper surface, since the blowing wind generally needs to be urged forward, the deflection angle of the blowing wind tends to be large and the noise tends to be large. Even in such a case, the noise at a large air volume can be suppressed, and the air blown out from the air outlet on the upper surface is mainly directed upward, so that the user is less likely to receive a sense of draft due to the blown air, so that the user can comfortably clean the air. A device can be obtained.

[0012]

[0013]

[0014]

[0015]

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the accompanying drawings. Hereinafter, an air cleaning device 1 having a function of purifying contaminants by a photocatalyst and a function of removing dust by ionization will be described as an example. FIG. 1 is an exploded perspective view of an air cleaning device according to an embodiment of the present invention. FIG. 2 is a cross-sectional side view of a schematic configuration of the air cleaning device of FIG.

The air purifying apparatus 1 includes a box-shaped housing 10 for defining an air passage therein, and a blower fan 27 as a blower for flowing air through the air passage in the housing 10. The housing 10 includes a front case 11 and a rear case 12, and has a suction port 11a serving as an inlet of an air passage.
Are formed on the front surface of the front case 11. Further, a blower fan 27 is provided in a portion of the rear case in the middle of the air passage, and an air outlet 12a serving as an outlet of the air passage is formed on the upper surface 12e of the rear case 12. The outlet 12a is provided with a wind direction adjusting device 30 for regulating the direction of the wind blown from the outlet 12a.

The blower fan 27 is, for example, a sirocco fan for generating a ventilation flow in a predetermined direction, and is driven to rotate by a blower motor 28. Blower fan 27
Is mounted in a casing 12d formed integrally with the rear part of the rear case 12. The casing 12d is
A part of the air passage is sectioned, the front surface has an opening connected to the inside of the front case 11, and communicates with the upper outlet 12a.

The air passage is an air passage that flows from the inlet 11a into the front case 11 and the rear case 12 from the front to the rear, and flows upward in the casing 12d to reach the outlet 12a. . The air is purified by the purifying means 20 in the portion of the air passage before entering the blower fan 27. The purifying means 20 is constituted by the following components arranged sequentially along the air passage in the housing 10. That is, a pre-filter 21 for removing relatively large dirt and dust, an ionization unit 22 for ionizing dust particles in a flow (air flow) along an air passage, and an electrostatic device for adsorbing ionized dust particles. A roll filter 23 including a filter 23a and a deodorizing filter 23b supporting a photocatalyst;
A photocatalyst element 25 for holding the photocatalyst, and a light source 26 for purifying contaminants by irradiating the photocatalyst element 25 and the like with ultraviolet light to excite the photocatalyst.
Are disposed from upstream to downstream in the flow direction of the ventilation flow.

The ionization section 22 includes a plurality of ionization lines 22a extending in a direction perpendicular to the direction of the air flow and being parallel to each other, and a pair of opposing electrode plates disposed opposite each other with the ionization lines 22a interposed therebetween. 22b.
The ionization unit 22 charges the dust particles in the ventilation flow by an ion shower generated by corona discharge. The charged dust particles are electrically absorbed by the electrostatic filter 23a.

The photocatalyst element 25 carries a photocatalyst, which decomposes odor components and the like upon irradiation with ultraviolet rays, on the surface or inside a photocatalyst carrier having a ventilation surface. The photocatalyst means a substance that absorbs light and gives the energy to a reactant to cause a chemical reaction, and specifically, titanium oxide (TiO ₂ ) and zinc oxide (ZnO) having an anatase type crystal structure And tungsten oxide (WO ₃ ). The light source 26 has, for example, a wavelength of 320 to 420 n.
m of light can be emitted, which can activate the photocatalyst to purify contaminants.

According to the air purifying apparatus 1, when the blower fan 27 is operated, air is sucked from the suction port 11a, and relatively large dust is captured by the pre-filter 21 while flowing through the above-described air path. Fine dust is charged in the ionization unit 22 and captured by the electrostatic filter 23a, and contaminants such as odor components are purified by the photocatalytic element 25 and the deodorizing filter 23b. The air thus purified is blown out from the outlet 12a (arrows A to A).
C).

By the way, in the air purifying apparatus 1, a first installation mode installed on the floor TF or a table and a second installation mode installed on the wall surface W0 can be selected.
For this reason, the housing 10 has portions used for installation in each installation mode. The air blown from the air outlet 12a is blown out by the wind direction adjusting device 30 in a direction suitable for the selected installation mode.

The details will be described below. On the rear surface of the rear case 12 of the housing 10, a hook portion 12b that can be used when used in the second installation mode is integrally formed. The air purifier 1 can be installed on the wall surface W0 by hooking and engaging the hook portion 12b with a mounting bracket W1 fixed to the wall surface W0. Also, the rear case 12
A plurality of legs 12c that can be used when used in the first installation mode are integrally formed on the lower surface of the.

The wind direction adjusting device 30 is provided at the outlet 12a so as to be displaceable and controls a flap 31 as a wind direction restricting member for restricting the direction of the blown wind, and a stepping motor 32 (SP) as a driving mechanism for displacing the flap 31. Motor). The flap 31 is a plate-like member having a lower surface 31b formed of, for example, a concave curved surface, which deflects the blowing wind, and is formed in a single plate shape having substantially the same size as the outlet 12a. The flap 31 has a pair of rotation center axes 31a provided near the rear end edge and extending in a straight line in the horizontal direction, and these rotation center axes 31a are rotatably supported by the rear case 12. . Further, one rotation center shaft 31 a is drivingly connected to the output shaft of the stepping motor 32 in a directly connected state.

When a predetermined drive signal is input to the stepping motor 32, the output shaft can be displaced to an angular position corresponding to the signal. The operation of the flap 31 will be described. When the stepping motor 32 is driven, the flap 3
1 is rotationally displaced about the rotation center axis 31a,
By deflecting the flow of air passing through the air outlet 12a, the deflection angle between the flow direction immediately before passing through the flap 31 (the vertical direction in this embodiment) and the flow direction immediately after passing ( (Shown by D1 in FIG. 3). As a result, the blowing direction of the blowing wind can be changed, for example, from the flow direction from the bottom upward to the forward direction.

A plurality of restriction positions are set in advance on the flap 31 in accordance with the installation mode and the air volume. Flap 31
Is stopped at each restriction position, as described later, and the direction of the blown wind is determined accordingly. Also, flap 31
Is fluctuated and displaced between positions within a certain range including the regulation position, and the direction of the blown wind changes accordingly. Flap 3
Specifically, the following positions are set as the one restriction position according to each installation mode. For example, flap 3
A closed position (P0) in which 1 is housed flush with the upper surface 12e of the rear case 12 and the outlet 12a is closed. A first position (P) in which the flap 31 is rotationally displaced by 20 degrees in a direction (clockwise direction in FIG. 3) in which the outlet 12a is opened from the closed position.
1). From the first position, the flap 31
Is a second position (P2) where is rotated upward by 10 degrees.
A third position (P3) in which the flap 31 is rotationally displaced by 10 degrees in a direction to open from the second position. A fourth position (P4) in which the flap 31 is rotationally displaced by 30 degrees in a direction in which the flap 31 is opened from the third position, and the flap 31 is substantially erected on the outlet 12a and the outlet 12a is opened. The deflection angle D1 at the flap 31 at the first position is 70 degrees, the deflection angle D1 at the second position is 60 degrees, and the deflection angle D1 at the third position is 5 degrees.
The deflection angle D1 at 0 degree and the fourth position is 20 degrees.

As described above, when the present air purifying apparatus is used in any of the above-described installation modes, the flap 31 can be displaced by the drive mechanism to the regulated position corresponding to the installation mode, and thus is suitable for the installation mode. The deflection angle D1. As a result, for example, in the first installation mode which is assumed to be installed close to the user, it is possible to prevent noise at a large air flow at a large deflection angle and realize an air purifying apparatus 1 with a quiet operation sound. it can.

Further, the air purifying apparatus 1 sets a control section 40 as control means for controlling the position of the flap 31 via a drive mechanism, and which of the first and second installation modes. Installation switch 33 as setting means
(Installation SW) and an operation panel 34 as operation means for giving various settings and instructions to the control unit 40 for operation.
And a remote controller 35.

The control unit 40 is provided in the housing 10 and includes a microcomputer C and the like.
PU, RAM, ROM, etc. are included. The control unit 40
Control is performed based on programs, data, and the like stored in a ROM or the like. Further, the control unit 40 includes a clock (not shown), and can measure an interval when the stepping motor 32 is temporarily stopped as described later.

The control unit 40 is connected to the installation switch 33 and the operation panel 34.
A signal from each switch of the operation panel 34 is input.
Further, a connection circuit (not shown) capable of receiving a signal via infrared rays or the like is connected to the control unit 40, and the control unit 40 receives a signal from a remote control device 35 for remote operation provided separately from the air purifying device main body. Can be input to the control unit 40.

The control unit 40 can control the operations of the blower fan motor 28, the stepping motor 32, and the like via a drive circuit (not shown). For example, the blower fan motor 28 is driven to change the air volume, and changes the air volume of the blown air according to a command from the operating means to a large air volume (air volume H), a medium air volume (air volume M), and a small air volume (air volume L). And the amount of fine air (air volume LL). Here, the relationship between the air volumes is H>M>L> LL.

The installation switch 33 is a switch that can be manually operated. The installation switch 33 can be operated in two states according to the first and second installation modes, for example, an open state and a closed state, and can maintain that state. The installation switch 33 is disposed on the front surface of the rear case 12, and is operable with the front case 11 removed to prevent inappropriate operation by an uninformed user. The setting unit may respond to the manual operation as described above, or may be configured to automatically set the installation mode.

As described above, when one of the installation modes is set by the installation switch 33, the flap 31 can be automatically displaced by the control means to the restricted position corresponding to the set installation mode, so that it is suitable for the installation mode. The blowing wind can be obtained at the different deflection angles. The operating means specifically has the following switches for operating each part of the present air cleaning device. These switches are provided on both the operation panel 34 and the remote controller 35. Each switch receives a human operation and sends a predetermined signal to the control unit 4.
Output to 0. These switches include a power switch for turning the power on and off, a start switch for operating the air blowing fan 27 and the purifying means 20 to perform an air cleaning operation, an air volume switch for setting the air volume of the blown air, and a flap 31. As a signal related to the regulation position, a swing switch for giving a swing operation command (swing input) for fluctuating the flap 31 can be exemplified.

Next, the contents of the control will be described. The air purifying apparatus 1 is operated automatically or manually in a selectable manner according to the contents of the installation mode set as described above. Hereinafter, the flow charts of FIGS. 4 to 8 will be described for the case where the swing operation is performed in the first installation mode, the case where the swing operation is not performed in the first installation mode, and the case of the second installation mode. This will be described with reference to FIG. 9 (a) to 9 (l),
The schematic diagram of the position of the flap 31 in each case is illustrated according to the installation mode, the swing input, and the air volume.

In this air cleaning device, the installation mode in which the air cleaning device is installed is set in advance by manually operating the installation switch 33. First, reference is made to FIG. When the swing operation is performed in the first installation mode.

When the power is turned on, first, a swing input is disabled (step S1). next,
By driving the stepping motor 32, the flap 31 is returned to the closed position, and the flap 31 is returned (step S2). Next, the contents set in the installation switch 33 are read (step S3). Step S4
Then, based on the content set in the installation switch 33,
Determine the installation mode. That is, if the installation switch 33 is in the closed state (H), it can be determined that the operation mode is the first installation mode (desktop installation). On the other hand, if the installation switch 33 is in the open state (L), it can be determined that the installation mode is the second installation mode (wall installation). Control is performed according to the determined content.

In the first installation mode (YE in step S4)
S), swing control (step S5) shown in FIG. 5 is performed. After the setting of the air volume and the like is performed by the operating means, the operation is started by operating the start switch.
Thereby, the swing control is started (Step S2)
First, a flap position setting process (step S22) for displacing the flap 31 to the initial position is performed. The initial position here is a start position when the flap 31 is fluctuated.

In the flap position setting process, as shown in FIG. 7, first, in accordance with the contents of the setting switch 33 (YES in step S11), the prohibition of accepting the swing input is released (step S12), and the reciprocation of the flap 31 is performed. It is made possible to select fluctuation or stop. Next, the rotation speed of the stepping motor 32 is set (step S13). This rotation speed is set to be faster than the rotation speed at the time of reciprocating fluctuation, for example, twice, so that the flap 31 can be quickly arranged at the start position.

In the case of the first installation mode (NO in step S14), the initial position is set according to the amount of blown air. That is, when the air volume is LL or L (YES in step S15), the stepping motor 32 is driven so that the flap 31 is displaced to the third position (step S16). If the air volume is M or H (NO in step S15), the flap 31
The stepping motor 32 is driven to move to the position (step S17).

Returning to FIG. After that, the presence or absence of a swing input and operation stop input is constantly monitored,
Control is performed. In step S23, the presence or absence of a swing input is determined. In the case of swing driving (step S
First, the rotational speed of the stepping motor 32 is set (step S24). This rotation speed is a rotation speed when the flap 31 is reciprocated. For example, the rotation speed is set to 5 degrees per second.

Next, depending on the amount of the blown air, the flap 3
The content of the position control of No. 1 is set. That is, when the air volume is H (YES in step S25), the stepping motor 32 is driven such that the flap 31 continuously reciprocates between the fourth position and the third position (step S26). ) (See FIG. 9A). Also, if the air volume is M
(NO in step S25, YES in step S27), the stepping motor 3 is moved so that the flap 31 continuously reciprocates between the fourth position and the second position.
2 is driven (step S28) (see FIG. 9B).

If the air volume is L (step S2)
7, NO in step S29), and the stepping motor 32 is driven so that the flap 31 continuously reciprocates between the fourth position and the first position (step S30) ((FIG. 9 ( c)). When the air volume is LL (NO in step S29), the flap 31 is stopped at the third position (step S31) (see FIG. 9D).

As described above, depending on the position of the flap 31 according to the air flow, it is possible to obtain blown air in an appropriate direction according to the air flow. Thereafter, as shown in FIG. 4, when an operation stop is commanded (YES in step S7), stop processing is performed (step S8). In the stop processing, as shown in FIG. 8, first, the swing input is not accepted (step S81), and then the stepping motor 32 is driven so as to displace the flap 31 to the closing position (step S82). ).

When the swing operation is not performed in the first installation mode. In this case, the content of the swing control in step S5 is
This is different from the case described above. First, as shown in FIG. 5, the initial position displaced in the flap position setting process (step S22) is a restriction position where the flap 31 is stopped. As described above, when the air volume is LL or L (YES in step S15 of FIG. 7), the flap 31
Is stopped at the third position (step S16). Also,
If the air volume is M or H (N in step S15)
O), the flap 31 is stopped at the fourth position (Step S17).

When the swing operation is not performed (NO in step S23 in FIG. 5), the direction of the blown air is determined by the flap 31 stopped at the restriction position as described above. That is, when the air volume is M or H, the flap 31 stops at the fourth position (see FIGS. 9E and 9F), and when the air volume is L or LL, the flap 31 stops at the third position. (See (g) and (h) of FIG. 9).

Thereafter, as described above, when the operation stop is instructed (YES in step S7 in FIG. 4), the stop processing is performed (step S8). As described above, when the first installation mode is set, and the flap 31 is operated to be stopped by the operation means, the flap 31 is stopped at the stop position corresponding to the air volume. (See FIGS. 9E to 9H). This allows the blown air to be fixed in the direction of the blown air according to the amount of air, so that the sense of draft caused by the blown air can be reliably prevented according to the amount of air. For example, since a large amount of blowing wind tends to give an unpleasant draft feeling, it is preferable that the blowing wind is not directed to the user. Also, the operation can be simplified.

Further, the stop position at which the flap 31 is stopped in accordance with the air volume is such that the direction of the blown air is relatively upward when the air volume is large, and the direction of the blow air is relatively forward when the air volume is small. Have been. by this,
A relatively large upward blowing wind is difficult to hit the user, so that the user does not need to give a draft feeling. In addition, at the time of a small air volume where there is no fear of the draft feeling, it is possible to provide a forward and comfortable blowing wind.

For example, when the air volume H is relatively large, the flap 31 is at the fourth position, whereas when the air volume L is relatively small, the flap 31 is at the third position. It should be noted that relatively upward is close to right above,
Relatively forward is close to the frontal direction. For example, the flap 31 at the fourth position is relatively upward with respect to the third position, and conversely, the flap 31 at the third position is relatively forward with respect to the fourth position. It is.

In the case of the second installation mode In this case (NO in step S4 in FIG. 4), flap control (step S6) is performed. In this case, the swing input by the operation means is not accepted, and the position of the flap 31 is controlled in a preset mode. As shown in FIG. 6, when the operation is started by operating the start switch after the setting of the air volume or the like is performed by the operation means, the flap control is started (YES in step S61). First, a flap position setting process (step S62) for displacing the flap 31 to the initial position is performed.

In the flap position setting process, as shown in FIG. 7 (NO in step S11), the rotation speed of the stepping motor 32 is immediately set (step S13). In the case of the second installation mode (YES in step S14), the initial position is set irrespective of the amount of blown air. That is, the stepping motor 32 is driven so that the flap 31 is displaced to the third position (Step S16). Thereby, control is simplified. This is because the air purifying device of the second installation mode is assumed to be installed close to the ceiling, and the range in which the direction of the blown wind can be adopted is narrowed. As a result, the range of the restricted position of the flap 31 is also narrow. is there.

Returning to FIG. Thereafter, the operation is performed while the presence or absence of the operation stop input is constantly monitored.
First, the rotation speed of the stepping motor 32 is set (step S63). This rotation speed is a rotation speed when the flap 31 is reciprocated. For example, the rotation speed is set to 5 degrees per second.

Next, the flap 31 is set in accordance with the amount of the blown air.
Is position-controlled. If the air volume is H (step S6)
4 (YES in step 4), the flap 31 is stopped at the third position (step S65) (see (i) in FIG. 9). If the air volume is M (N in step S64)
O, YES in step S66), the stepping motor 32 is driven so that the flap 31 reciprocates between the third position and the second position while temporarily stopping at both positions (step S67). For example, the flap 31 is displaced from the third position to the second position, and at the second position, for example, 1
After stopping for 0 second, the cycle is repeated from the second position to the third position and stopped at the third position, for example, for 10 seconds (see FIG. 9 (j)).

If the air volume is L (step S6)
6; NO), so that the flap 31 reciprocates between the third position and the first position while temporarily stopping at both positions.
The stepping motor 32 is driven (step S6).
8). For example, the flap 31 is displaced from the third position to the first position, and after stopping at the first position for, for example, 10 seconds,
This cycle of displacing from the first position to the third position and stopping at the third position for, for example, 10 seconds is repeated (see (k) in FIG. 9).

If the air volume is LL (YES in step S64), the flap 31 stops at the third position (step S65) (see (l) of FIG. 9).
In this manner, by the position and movement of the flap 31 according to the air flow, it is possible to obtain blown air in an appropriate direction according to the air flow. Thereafter, as shown in FIG. 4, when an operation stop is instructed by the operation means (YES in step S7), stop processing is performed (step S8).

As described above, according to the present embodiment, the flap 3 is set to have a deflection angle D1 corresponding to the amount of the blown air.
1 is being controlled. As a result, the blowout wind can be set to the deflection angle D1 corresponding to the airflow, so that the blowout wind can be finely adjusted, and for example, noise at a large airflow can be reduced. In particular, as the deflection angle D1 corresponding to the amount of blown air, a magnitude relationship is established in which the deflection angle D1 when the amount of blown air is large is smaller than the deflection angle D1 when the amount of blown air is small. Has been. Thus, the deflection angle D1 at a large air flow can be reliably reduced, so that noise generated at a large air flow and a large deflection angle can be reliably reduced. Note that the magnitude relationship may be partially satisfied.

For example, in each of the cases of FIGS. 9A to 9C, the deflection angle at the large air volume H is 20 to 50 degrees, and the medium air volume M
Is 20 to 60 degrees, the deflection angle at the small air volume L is 20 to 70 degrees, and the smaller the air volume, the larger the blowout wind having the larger deflection angle D1. FIG.
In each of the cases (e) to (h), the deflection angle at the air volumes H and M is 20 degrees, which is smaller than the deflection angle at the air volumes L and LL of 50 degrees. 9 (i) to 9 (k), the deflection angle at the large air volume H is 50 degrees, the deflection angle at the medium air volume M is 50 to 60 degrees, and the deflection angle at the small air volume L is 5 degrees.
It is 0 ° to 70 °, and includes a blowout wind having a larger deflection angle D1 as the airflow decreases.

When the flap 31 is reciprocatingly displaced, the width of the variation range of the deflection angle D1 when the air volume of the blowing air is large is determined by the deflection angle D when the air volume of the blowing air is small.
A magnitude relationship that is smaller than the width of the fluctuation range of 1 is established. As a result, the largest deflection angle D1 in the fluctuation range can be reduced, so that excessive deflection of the blown wind can be prevented, and the above-described noise can be more reliably reduced.

For example, in each of FIGS. 9A to 9C, as the air volume decreases, the width DD of the variation range of the deflection angle D1 increases, that is, the deflection angle at the large air volume H becomes larger. The width DD is 30 degrees at 20 to 50 degrees, the deflection angle at the medium air volume M is 20 to 60 degrees, the width DD is 40 degrees, and the small air volume L
Is 20 to 70 degrees and the width DD is 50 degrees. 9 (k), the deflection angle at the small air volume L is 50 ° to 70 ° and the width DD is 20 °, and the deflection angle at the middle air volume M in FIG. 9 (j) is 50 °. Width DD at ~ 60 degrees
Is greater than 10 degrees, the width DD of the deflection angle variation range is larger.

In particular, it is more preferable that the maximum deflection angle in the width of the fluctuation range when the air flow is large is smaller than the maximum deflection angle in the width of the fluctuation range when the air flow is small. For example, in each of FIGS. 9A to 9C, the maximum deflection angle at the large air volume H is 50 degrees, the maximum deflection angle at the medium air volume M is 60 degrees, and the maximum deflection angle at the small air volume L. The angle is 70 degrees, and the larger the air volume is, the smaller the maximum deflection angle is. Also,
The maximum deflection angle at the middle air volume M in the case of FIG.
9 (k), which is smaller than the maximum deflection angle of 70 degrees at the small air volume L.

In the case where the air volume is LL, FIG.
As shown in (d), (h) and (l), the swing operation is disabled and the flap 31 is stopped at the third position. Thereby, the operating noise of the drive mechanism can be prevented, and the operating noise can be further reduced. This is because, in general, when the air volume is small, the noise due to the wind is reduced. Therefore, when the flap 31 is driven, for example, the driving sound such as the sound of the stepping motor 32 or the mechanical sound from each part is felt. They tend to be large and annoying. In particular, when the driving airflow is the minimum airflow (LL), the above-described driving sound is most annoying to the user.

Therefore, when the operating air volume becomes equal to or less than a relatively small predetermined air volume, the driving mechanism is stopped, so that it is possible to prevent the generation of an unpleasant driving sound when the air volume is small. Noise can be reliably reduced. In particular, by stopping the drive mechanism at the minimum air flow, it is possible to reliably prevent the generation of the most annoying drive sound at the minimum air flow, so that the sensational noise at the minimum air flow is reliably reduced. be able to.

When the drive mechanism is stopped in order to suppress the drive noise, the control section 40 does not accept an operation for driving the drive mechanism and stops the drive mechanism without fail. It is more preferable that the operation and effect can be surely obtained. In the present embodiment, the control unit 40 stops the driving mechanism in order to suppress the driving sound when the minimum air volume (LL) is reached. However, the present invention is not limited to this. For example, the driving mechanism is operated only when the operating air volume is the maximum air volume (H), and the driving mechanism is stopped when the operating air volume is less than the maximum air volume and equal to or lower than a predetermined air volume (air volume M or lower). Is also good.

In the air purifying apparatus 1, the air outlet 1
Since 2a is located on the upper surface 12e of the housing 10, it is generally necessary to urge the blowout wind forward, so that the deflection angle D1 of the blowout wind tends to increase and noise tends to increase. Even in such a case, the deflection angle D1 according to the air volume is
Therefore, it is possible to suppress noise at a large air volume.

The configurations of the flap 31 and the drive mechanism are not limited to those described above. For example, flap 31
May be a grill-like member composed of a plurality of members. Further, the drive mechanism may include a motion conversion mechanism such as a link mechanism, a position detection sensor, and the like. In short, the flap 31
Any wind direction regulating member that is provided displaceably at the outlet and that can regulate the direction of the wind blown from the outlet at the regulating position according to each installation mode may be used.The drive mechanism may move the wind direction regulating member to the regulating position. As long as it can be displaced.

In the above-described embodiment, the air volume is changed stepwise, but may be changed continuously. Further, the configuration of the purifying means 20 of the air purifying device is not limited to the above-described configuration. For example, other known purifying means may be used. The present wind direction adjusting device 30 can be applied to an air purifying device in which wind passing through the purifying means 20 is blown out from the outlet 12a.

In addition, various design changes can be made without changing the gist of the present invention.

[0068]

According to the first aspect of the present invention, the blown air can be finely adjusted at a deflection angle corresponding to the air volume.
For example, noise at a large air volume can be reduced. Special
In addition, the width of the deflection angle
The above-mentioned noise can be reduced because excessive deflection of the wind can be prevented.
The reduction can be achieved more reliably . According to the second aspect of the invention, in addition to the effects of the first aspect, the deflection angle at a large air volume can be reliably reduced, and noise generated at a large air volume and a large deflection angle can be reliably reduced. Can be reduced.

According to the third aspect of the present invention, the driving mechanism is
By stopping it, it can be harsh when the wind is small
Drive noise can be prevented,
The sensational noise can be more reliably reduced.
According to the air purifying device of the fourth aspect of the present invention, even at the outlet on the upper surface where noise tends to be large , noise at a large air volume can be suppressed, and moreover, the noise from the outlet on the upper surface can be reduced. A comfortable air purifying device that makes it difficult for the user to receive a draft feeling due to the blowing wind can be obtained.

[0070]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an air cleaning device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional side view of a schematic configuration of the air cleaning device of FIG.

FIG. 3 is a sectional side view of a wind direction adjusting device of the air cleaning device of FIG. 1;

FIG. 4 is a flowchart showing an outline of control contents of the air cleaning device of FIG. 1;

FIG. 5 is a detailed flowchart of the swing control in FIG. 4;

FIG. 6 is a detailed flowchart of the flap control of FIG. 4;

FIG. 7 is a detailed flowchart of a flap position setting process of FIG. 4;

FIG. 8 is a detailed flowchart of a stop process of FIG. 4;

FIG. 9 is a schematic view of a position of a flap of the air cleaning device of FIG. 1, and is shown in (a) to (l) according to an installation mode, a swing input, and an air volume.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air cleaning device 10 Housing 12a Air outlet 12e Upper surface 30 Wind direction adjusting device 31 Flap (wind direction regulating member) 32 Stepping motor (drive mechanism) 40 Control unit (control means) D1 Deflection angle DD Width of fluctuation range of deflection angle

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-58-187736 (JP, A) JP-A-5-187707 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 13/08-13/18

Claims (4)

(57) [Claims] An airflow direction regulating member (31) which is displaceably provided at an air outlet (12a) so as to vary the deflection angle (D1) of the airflow and regulates the direction of the airflow from the air outlet (12a). A drive mechanism (32) for displacing the wind direction regulating member (31), and a drive mechanism
(32) and a control means (40) for controlling the wind direction adjusting device (3
(0), the control means (40) sets the wind direction regulating member (31) in a predetermined variation range.
When reciprocating displacement occurs around
The width (DD) of the variation range of the deflection angle (D1)
Is smaller than the width (DD) of the variation range of the deflection angle (D1) when
A wind direction adjusting device characterized in that the drive mechanism (32) is controlled so that the deflection angle (D1) according to the amount of blown air is reduced while being reduced . 2. The method according to claim 1, wherein the deflection angle (D1) of the blowing wind is varied.
Displaceably installed at the outlet (12a) and from the outlet (12a)
Wind direction regulating member (31) for regulating the direction of the
A drive mechanism (32) for displacing the direction regulating member (31), and a drive mechanism
(32) and a control means (40) for controlling the wind direction adjusting device (3
(0), the control means (40) sets the wind direction regulating member (31) in a predetermined variation range.
When reciprocating displacement occurs around
The width (DD) of the variation range of the deflection angle (D1)
Is smaller than the width (DD) of the variation range of the deflection angle (D1) when
While reducing the deflection angle (D when the air volume of the air blown is large
A wind direction adjusting device that controls the driving mechanism (32) so that 1) is smaller than the deflection angle (D1) when the amount of blown air is small. 3. The wind direction adjusting device according to claim 1, wherein
0), the control means (40) determines in advance that the operating airflow is less than the maximum airflow.
When the air volume falls below the specified level, the drive mechanism (32) is stopped.
A wind direction adjustment device characterized by being left behind . 4. A wind direction adjusting device (30) according to any one of claims 1 to 3, and an air outlet (12a) provided with the wind direction adjusting device (30).
(12e) and a housing (10).