JP2011021787A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent decline in initial dust collecting performance even when a dust collecting filter used for an air cleaner is clogged. <P>SOLUTION: A control part 11 stores an instruction voltage value of a voltage control means 13 decided with respect to target rotational frequency predetermined with respect to each air quantity, and when the instruction voltage value with respect to the determined target rotational frequency becomes lower than the stored value, the determined target rotational frequency value is increased to set a new value. Through this configuration, decline in air quantity caused by clogging of the filter is detected, and the air quantity is increased by additionally increasing the target rotational frequency, so as to prevent decline in dust collecting performance. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air purifier that detects air pollution in a room, a controller drives a blowing means to suck in indoor air, and cleans it through a cleaning means.

  Conventionally, this type of air purifier is known as described below.

  Hereinafter, the air cleaner will be described with reference to FIGS. 8 and 10. As shown in the figure, the air purifier main body 101 is provided with a front panel 102, and a filter 104 for cleaning air, a fan motor 105 that ventilates the filter 104, and operation control of the fan motor 105 are performed. A control unit 106 is provided. Further, an optical dust sensor 107 that detects indoor air contamination is provided on the side surface of the air cleaner body 101, and a display monitor 108 that displays the contamination level is provided on the left side of the front.

  In the above configuration, when the dust sensor 107 detects dirt, the control unit 106 controls the fan motor 105 so that the number of rotations is defined by the magnitude of the signal from the dust sensor 107, and simultaneously controls the display monitor 108 to detect the amount of dust. The cleaning operation corresponding to the dirt in the room is performed while displaying (for example, see Patent Document 1).

Japanese Patent No. 2758655

  In such a conventional air purifier, every time air dirt is removed, dust accumulates on the filter and clogs. Therefore, the pressure loss of the filter increases and even if it is rotated at the specified rotation speed, it sucks in. There was a problem that the air volume decreased and could not be removed sufficiently.

  Therefore, the present invention solves such a conventional problem, and an object of the present invention is to provide an air purifier capable of having a sufficient dust removal performance even when a filter is clogged.

  In order to achieve this object, the air purifier of the present invention provides a cleaning means for cleaning the sucked dirty air, a blowing means for ventilating the cleaning means, and an instruction for rotation to the blowing means. Voltage control means, a rotation speed detection means for detecting the rotation speed of the blower means, and a control section for controlling the voltage control means to operate at a specified rotation speed, wherein the control section has an air volume in advance. An initial instruction voltage value is stored as an instruction voltage value to the voltage control unit determined for the target rotation speed defined for each time, and the instruction voltage value is adjusted to reach the target rotation speed. When the actual command voltage value becomes lower than the initial command voltage value, the specified target rotation value is increased by a predetermined value and a new command voltage value after correction is set. The purpose of the period .

  In the air purifier of the present invention, the control unit does not increase the target rotation value defined for the maximum air volume.

  Further, in the air cleaner of the present invention, the control unit does not increase the target rotation value defined for the minimum air volume.

  Further, the air cleaner of the present invention is provided with a dirt detection means for detecting dirt on the air, and the control unit is a target rotational speed value specified in automatic operation in which the operation air volume is changed according to the dirt amount detected from the dirt detection means. Is not increased.

  In addition, the air purifier of the present invention is provided with a human detection means, and the control unit is configured not to increase the prescribed target rotational value when the presence of a person is detected from the human detection means.

  Further, the air cleaner of the present invention is provided with light detection means, and the control unit is configured not to increase the specified target rotation value when light is no longer detected from the light detection means.

  Further, the air cleaner of the present invention is configured to stop the operation when the indicated voltage value for the specified target rotational speed rises 0.5 V or more from the stored value.

  Further, the air cleaner of the present invention is provided with a replacement display means for informing the replacement timing of the cleaning means, and the control unit is configured to increase the final rotational speed by more than 100 revolutions relative to the specified initial target rotational speed. The exchange display means is displayed.

  According to the present invention, the cleaning means for cleaning the sucked dirty air, the blowing means for ventilating the cleaning means, the voltage control means for instructing the rotation to the blowing means, and the rotational speed of the blowing means And a control unit that controls the voltage control unit in order to operate at a specified rotational speed. The control unit is determined for a target rotational speed that is defined in advance for each air volume. An initial instruction voltage value is stored as an instruction voltage value to the voltage control means, and an actual instruction voltage value when the instruction voltage value is adjusted to reach the target rotational speed is the initial instruction voltage value. When the filter becomes clogged, the specified target rotation numerical value is increased by a predetermined value and the indicated voltage value after correction is newly set. When set to number Since the command voltage value of the pressure control means decreases, it is possible to detect a decrease in the air volume due to clogging of the filter, and an air cleaner that has the effect of increasing the air volume by newly increasing the target rotation speed and does not decrease the dust collection performance. Can be provided.

1 is a perspective view of a partially broken external view of an air cleaner according to a first embodiment of the present invention. Same control block diagram Same control flowchart Correlation diagram of the number of revolutions of the same operating air flow and the corresponding command voltage value ((A) Initial view of filter, (B) Diagram after filter clogging) Control block diagram of Embodiment 2 of the present invention Same control flowchart Correlation diagram of the number of revolutions of the same air flow and the corresponding command voltage value ((A) Initial view of the filter, (B) Diagram after clogging, (C) Diagram when the filter is replaced) External perspective view of a conventional air purifier Correlation diagram of operating air volume and dirt display against dirt level value of the detector Same control flowchart

  The invention according to claim 1 of the present invention includes a cleaning means for cleaning the sucked dirty air, a blowing means for passing air through the cleaning means, a voltage control means for instructing rotation to the blowing means, It has a rotation speed detection means for detecting the rotation speed of the blower means, and a control section for controlling the voltage control means in order to operate at a specified rotation speed, and the control section is a target rotation previously specified for each air volume. An initial instruction voltage value is stored as an instruction voltage value to the voltage control means determined with respect to the number, and an actual instruction voltage value when the instruction rotational speed reaches the target rotational speed by adjusting the instruction voltage value is When it becomes lower than the initial command voltage value, the specified target rotation value is increased by a predetermined value and a new command voltage value after correction is set. As a result, when the target speed is set when the filter is clogged, the command voltage value of the voltage control means decreases, so it is possible to detect a decrease in the air volume due to clogging of the filter and newly increase the target speed By doing so, there is an effect that the air volume is increased and the dust collection performance is not lowered.

  The invention according to claim 2 has a configuration in which the control unit does not increase the target rotation value defined for the maximum air volume. As a result, when operating at the maximum air volume, the rotational speed is not increased even if the filter is clogged, so that the operation sound is not increased.

  The invention according to claim 3 has a configuration in which the control unit does not increase the target rotation value defined for the minimum air volume. As a result, when operating at a minimum air volume at night or the like, even if the filter is clogged, the rotational speed is not increased, so that there is an effect of not bothering.

  According to a fourth aspect of the present invention, there is provided a dirt detection means for detecting dirt on the air, and the control unit is provided with a target rotation defined in automatic operation in which the operation air volume is changed according to the dirt amount detected from the dirt detection means. The configuration is such that the numerical value is not increased. As a result, while the operating air volume changes due to air pollution, which is an automatic operation, the rotational speed is not increased even if the filter is clogged, so that there is no sudden increase in the operating air volume.

  Further, the invention according to claim 5 has a configuration in which a human detection means is provided, and the control unit does not increase a prescribed target rotation value when a human occupancy is detected from the human detection means. .

  As a result, when the user is in the room, the rotation speed is not increased even if the filter is clogged, so that there is an effect that the user does not feel bothered.

  According to a sixth aspect of the present invention, there is provided a configuration in which a light detection means is provided, and the control unit does not increase a prescribed target rotation value when the light detection means stops detecting light.

  Thereby, even when the filter is clogged in darkness such as when sleeping, the rotation speed does not increase, so that the driving sound does not suddenly increase.

  Further, the invention of claim 7 has a configuration in which the operation is stopped when the command voltage value for the specified target rotational speed rises 0.5 V or more from the stored value. As a result, when the instruction voltage increases, the filter is not attached, so that the operation is stopped and the user is notified.

  Further, the invention of claim 8 is provided with a replacement display means for informing the replacement timing of the cleaning means, and when the final rotational speed has increased by 100 revolutions or more with respect to the specified initial target rotational speed, The replacement display means is displayed.

  As a result, if the clogging of the filter becomes severe, sufficient air volume will not be obtained and only the noise will increase even if the rotation speed is increased, and it will be informed that the filter performance has deteriorated by notifying the replacement of the filter. There is an effect.

  The invention according to claim 9 is a voltage control means for instructing rotation to the air blowing means, a rotation speed detecting means for detecting the rotation speed of the air blowing means, and the voltage control means for operating at a specified rotation speed. The control unit adjusts the command voltage value of the blower means with the target rotation speed corresponding to the set air volume as a target, and determines the filter from the difference between the actual command voltage and the initial command voltage. It has the structure which grasps | ascertains the degree of dirt, changes the target rotation speed, and newly adjusts the instruction | indication voltage value of a ventilation means.

  As a result, when the target rotation speed is set to the specified value when the filter has become clogged, the command voltage value of the voltage control means changes, so it is possible to detect a decrease in air volume due to filter clogging, and newly set the target rotation speed. By adjusting, there is an effect that the air volume increases and the dust collection performance does not deteriorate.

  Further, the invention of claim 10 has a controller that stores the rotational speed with respect to the set air volume and the initial instruction voltage value that drives the blowing means in correspondence with the rotational speed.

  As a result, even if the air volume is not measured, the command voltage value is adjusted with the rotation speed as a target, and by detecting the difference between the initial command voltage value and the actual command voltage value, the degree of dirt on the filter is grasped, The target rotation speed can be changed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 3, the air cleaner body 1 is formed in a substantially box shape, a front panel is provided on the front surface of the air cleaner body 1, and an air inlet 2 is provided on the side surface of the air cleaner body 1. The air cleaner body 1 is provided with a filter 3 as a purifying means for purifying the air and a fan motor 4 as a blowing means for passing air through the filter 3. Is provided. The fan motor 4 has a rotation speed signal output unit 6 as a rotation speed detection means for outputting a signal proportional to the rotation speed, and an instruction voltage input unit 7 for receiving a rotation instruction.

  A dust detection unit 8 provided with an optical dust sensor 8a as a dirt detection means is provided on the side of the air cleaner body 1 and detected by the dust detection unit 8 at the upper front of the air cleaner body 1. A dirt display unit 9 for displaying the amount of dust and an operation unit 10 for switching the operation mode are provided, and a calculation unit 12 is provided in the control unit 11. The control unit 11 includes a voltage control unit 13, and when the user operates the operation unit 10 to set an operation mode, the voltage control unit 13 instructs the fan motor 4 to rotate at a rotation speed corresponding to the set air volume. A signal from the rotation speed signal output unit 6 is detected while sending a signal to the voltage input unit 7 to adjust the command voltage to the command voltage input unit 7.

  In the above configuration, the control unit 11 inputs the voltage signal to the command voltage input unit 7 of the fan motor 4 while increasing / decreasing the rotational speed A set for each operating air volume when the new filter 3 is mounted, As shown in FIG. 4A, the first instruction voltage value is stored as an initial instruction voltage value corresponding to the determined number of revolutions for each operating air volume. After that, if the user uses the air purifier main body 1 and continues to operate automatically with an operation air volume corresponding to the amount of dust detected by the dust detector 8, for example, dust accumulates on the filter 3 and pressure loss increases. I will do it. The control unit 11 inputs and adjusts the second command voltage value (voltage signal) as the actual command voltage value to the command voltage input unit 7 of the fan motor 4 so that the rotation speed at the set operating air volume is obtained. To go. Since dust is accumulated on the filter 3 as described above, the pressure loss increases compared to the initial stage, and the load applied to the fan motor 4 is reduced. The rotational speed corresponding to the set air volume is stabilized at a voltage value lower than the initial instruction voltage value (voltage value stored in the initial stage). At this time, if the actual command voltage value (actual voltage value) is lower by 0.2 V or more than the initial command voltage value (initially stored voltage value), for example, it is determined that the operating air flow has decreased, and FIG. As shown in (b), the number of revolutions corresponding to each operating air volume is increased by 20 revolutions and stored as a new number of revolutions B. Thereafter, the corrected command voltage value is stored in the command voltage input unit 7 as the command voltage value for the newly specified rotational speed, and the operation is started based on the corrected command voltage value.

  When the filter becomes clogged as described above, the actual command voltage value that realizes the rotational speed corresponding to the set air volume decreases, so the rotational speed corresponding to the set air volume is detected by detecting the reduced voltage. By increasing it, the initial operating air volume can be secured and sufficient dust collection performance can be obtained.

  That is, the control unit 11 adjusts the fan motor instruction voltage with the target rotation speed corresponding to the set air volume as a target, and grasps the degree of contamination of the filter from the difference between the actual instruction voltage and the initial instruction voltage. By correcting or changing the rotational speed and adjusting the indicated voltage value of the fan motor, dust collection performance can be ensured even if the filter of the air cleaner is clogged.

  Further, in this embodiment, the rotation speed of each operation air volume is increased when the command voltage value is lower by 0.2V or more. However, the increase in noise may be prevented without increasing the rotation speed only for the maximum operation air volume. .

  Further, in this embodiment, the rotation speed of each operation air volume is increased when the command voltage value is lower by 0.2 V or more. However, the silent effect may be continued without increasing the rotation speed only for the minimum operation air volume.

  In addition, in this embodiment, the operation during automatic operation based on the detection amount of the dust sensor has been described, but during automatic operation, the operation air volume may suddenly increase depending on the amount of dust, so do not increase the rotational speed during automatic operation. Also good.

  Further, by providing a person detection means, the rotation speed may not be increased only when the presence of a person is detected.

  Further, by providing a light detection means, it may be detected that the room is dark when sleeping, and at that time, the rotation speed may not be increased.

  Also, in this embodiment, filter clogging is detected due to a decrease in the indicated voltage value. Conversely, if the voltage rises by 0.5 V or more, the filter is not installed and the operation is stopped and notification is made. Anyway.

(Embodiment 2)
Since the present embodiment is provided with the exchange display means 14 for the filter 3 with respect to the first embodiment, the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIGS. 5 to 7, the control unit 11 increases or decreases the voltage signal to the command voltage input unit 7 of the fan motor 4 so that the rotation speed A is set for each operation air volume when the new filter 3 is mounted. The command voltage value a corresponding to the determined number of revolutions for each operating air volume is stored as shown in FIG.

  After that, if the user uses the air purifier main body 1 and continues to operate automatically with an operating air volume corresponding to the amount of dust detected by the dust detector 8, for example, dust accumulates on the filter 3 and pressure loss increases. I will do it.

  When the control unit 11 adjusts by inputting a voltage signal to the command voltage input unit 7 of the fan motor 4 so that the rotation speed at the set operation air volume is obtained, the voltage value is lower than the initially stored voltage value. It stabilizes at. At this time, if the current voltage value is 0.2 V or more lower than the initially stored voltage value, it is determined that the operating air volume has decreased, and the number of revolutions corresponding to each operating air volume is increased by 20 rotations to obtain a new one. Stored as revolution number B.

  Thereafter, the operation is started with respect to the newly specified rotational speed, and the instruction voltage value b to the instruction voltage input unit 7 is newly stored as shown in FIG. Thereafter, every time the command voltage value decreases by 0.2 V or more, the number of revolutions is newly increased by 20 revolutions.

  Then, as shown in FIG. 7 (c), if the final rotational speed has increased by 100 or more rotations relative to the initial rotational speed A, the filter 3 is judged to be clogged and the replacement display means 14 is turned on. It informs the user of the replacement time.

  As described above, the clogged state of the filter can be determined by the increased number of rotations, so that the user can be notified of the replacement time accurately.

  Since the air cleaner according to the present invention can maintain the dust collection performance even when the filter is clogged, the dust collection performance of the filter used in the vacuum cleaner is lowered. It is useful as a technology that does not let you.

1 Air purifier body 3 Filter (cleaning means)
4 Fan motor (air blowing means)
6 Rotational speed signal output unit (Rotational speed detection means)
7 Indication voltage input unit 11 Control unit 13 Voltage control means
14 Exchange display means

Claims (10)

In an air purifier that cleans indoor air, a cleaning unit that cleans inhaled dirty air, a blowing unit that ventilates the cleaning unit, a voltage control unit that instructs rotation to the blowing unit, and It has a rotation speed detection means for detecting the rotation speed of the blower means, and a control section for controlling the voltage control means in order to operate at a specified rotation speed, and the control section is a target rotation previously defined for each air volume. An initial instruction voltage value is stored as an instruction voltage value to the voltage control means determined with respect to the number, and an actual instruction voltage value when the instruction rotational speed is reached by adjusting the instruction voltage value is An air cleaner that sets the indicated voltage value anew by increasing the prescribed target rotational value by a predetermined value when the initial indicated voltage value becomes lower. The air cleaner according to claim 1, wherein the control unit does not increase the target rotation value defined for the maximum air volume. The air cleaner according to claim 1, wherein the control unit does not increase a target rotation value defined for the minimum air volume. 2. A dirt detection means for detecting dirt on the air is provided, and the control unit does not increase a prescribed target rotational value in an automatic operation in which an operation air volume is changed according to the dirt amount detected from the dirt detection means. The air cleaner described. 2. The air cleaner according to claim 1, further comprising a human detection unit, wherein the control unit does not increase a specified target rotational value when the presence of a person is detected from the human detection unit. 2. The air cleaner according to claim 1, wherein a light detection means is provided, and the control unit does not increase a prescribed target rotation value when the light detection means stops detecting light. The air cleaner according to claim 1, wherein the control unit stops the operation when the command voltage value for the specified target rotational speed rises 0.5 V or more from the stored value. An exchange display means for notifying the replacement time of the cleaning means is provided, and the control section displays the exchange display means when the final rotational speed has increased by 100 revolutions or more with respect to the specified initial target rotational speed. The air cleaner according to claim 1. Voltage control means for instructing rotation to the blower means, rotation speed detection means for detecting the rotation speed of the blower means, and a control unit for controlling the voltage control means to operate at a specified rotation speed The control unit adjusts the instruction voltage value of the air blowing means with the target rotation speed corresponding to the set air volume as a target, and grasps the degree of contamination of the filter from the difference between the actual instruction voltage and the initial instruction voltage. An air purifier that changes the number of revolutions and newly adjusts the indicated voltage value of the blowing means. The air cleaner according to claim 9, further comprising: a controller that stores and stores a rotation speed for the set air volume and an initial instruction voltage value for driving the air blowing means in correspondence with the rotation speed.

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