JP2013192987A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a cleaning operation matched with actual use against a problem that a dust detection part can not collect all dust and can not stop the operation even when detecting dust of a small diameter that enters a room from the outside and continuing the cleaning operation automatically, in the operation by the dust detection part mounted on an air cleaner.SOLUTION: A control part 9 stops the operation of a fan motor 5 when a detection amount from an odor detection part 8 is lower than a prescribed value and a time when a dust detection part 7 detects only dust particles of a size less than a specified value reaches a fixed time, on the basis of detection signals from the dust detection part 7 and the odor detection part 8, and increases the specified value of the size of particles to be detected by the dust detection part 7 when the dust of the specified value or larger is detected in the dust detection part 7, the operation of the fan motor 5 is restarted, then the state similar to the previous time continues and the operation is stopped. Thus, since detection sensitivity in the dust detection part 7 can be lowered, the effect of being capable of preventing useless operation not matched with practical use can be achieved.

Description

  The present invention relates to an air purifier used in a general home or office.

  Conventionally, this type of air purifier is known in which dust size is detected and the suction direction is changed to efficiently collect dust (for example, see Document 1).

  Hereinafter, the air cleaner will be described with reference to FIGS.

  As shown in FIGS. 10 and 11, the main body 101 of the air purifier is formed in a substantially box shape, and a front panel 102 is provided on the front surface of the main body 101. An air inlet 104 is formed. In the main body 101, a filter 105 for purifying the air and a fan motor 106 for passing the air through the filter 105 are provided, and a blow-out portion 107 is provided on the top surface of the main body 101. By driving the fan motor 106, air is sucked in from the air inlet 103 and the openable / closable air inlet 104, cleaned through the filter 105, and then blown out from the blowing unit 107.

  On the side surface of the main body 101, a dust detection unit 108 provided with an optical dust sensor 108a is provided as a dirt detection means.

  An operation unit 109 is provided at the upper front of the main body 101, and a calculation unit 111 is provided in the control unit 110.

  In the above configuration, when the power supply is energized, the control unit 110 performs processing for converting the output signal detected by the dust detection unit 108 into a dirt level value of 0 to 5, and when the operation unit 109 is set to automatic operation, the control unit 110 110 operates the fan motor 106 in accordance with the dirt level value.

  Further, as shown in FIG. 12, the dust detection unit 108 identifies whether the size of the detected dust is less than 3 μm or 3 μm or more, and transmits the signal to the control unit 110. The control unit 110 calculates the signal at the calculation unit 111, and when the dust of 3 μm or more is large, the opening / closing type inlet 104 is opened to increase the suction amount from below, and when the dust of less than 3 μm is large The open / close type intake port 104 is closed to increase the suction from the side surface to remove air stains.

JP 2008-142624 A

  Such a conventional air purifier removes dirt generated indoors, and the dirt generated indoors can be removed within a predetermined time.

  On the other hand, when there is dust that continuously enters the room from the outside in a room where the number of times of natural ventilation is large, the dust may not be completely removed. For example, when dust of less than 1 μm such as yellow sand continues to enter the room, the dust cleaner's dust removal capability is insufficient, and the dust detection unit is always detecting dirt and will stop operating forever. There were times when I couldn't let you.

  If such a situation continues, the user may recognize that the air purifier has failed.

  Then, this invention solves such a conventional subject, and it aims at providing the air cleaner which can avoid giving a misunderstanding to a user.

  In order to achieve this object, the air cleaner of the present invention includes a cleaning means for cleaning the sucked dirty air, a blowing means for ventilating the cleaning means, identification of the size of dust and dirt. A dust detection unit capable of detecting the amount, an odor detection unit for detecting odors, a control unit for determining the amount of dirt detected from the dust detection unit and the odor detection unit and controlling the blowing means, and the control unit Is a time measuring means for measuring the time during which only the amount of dust particles having a detection amount from the odor detection unit lower than a predetermined value and less than a first specified value is detected from the dust detection unit, and the time Time storage means for storing the time measured by the measurement means, time determination means for comparing the time stored by the time storage means with a specified time, and the first storage time of the previous day stored by the time storage means And book In the air cleaner provided with the time comparison means for comparing the second storage time stored in the first storage time, the first storage time is determined to be equal to or longer than the specified time by the time determination means, and the first storage time is determined by the time comparison means. If it is determined that the second storage time is longer, the size of the dust particles detected by the dust detection unit is changed to a second specified value that is larger than the first specified value. The purpose of the period is achieved.

  In the air cleaner of the present invention, the control unit is provided with a specified value display unit that displays that the specified value detected by the dust detection unit has been changed, and is configured to notify the user.

  In addition, the air cleaner of the present invention is provided with a specified value selection operation unit capable of selecting the specified value detected by the dust detection unit in the control unit, and even if the state of the specified value display unit changes, it can The configuration is such that the default value can be selected.

  Moreover, the air cleaner of this invention provides the regulation value change operation part which can change the regulation value which the said dust detection part detects in the said control part, and the user himself changes the 2nd regulation value of the said dust detection part. It was configured to be able to.

  Further, the air cleaner of the present invention is configured such that the control unit automatically returns to the first specified value after a lapse of a certain period after the specified value of the dust detection unit is changed to the second specified value. did.

  According to the present invention, a cleaning means for cleaning the sucked dirty air, a blowing means for ventilating the cleaning means, a dust detection unit capable of identifying the size of dust and detecting the amount of dirt, and detecting odor An odor detection unit, and a control unit that determines and operates the air blowing means operation air volume corresponding to the larger amount of dirt among the dirt detection amounts from the dust detection unit and the odor detection unit, and the control unit includes: A time measuring means for measuring a time during which only a dust particle having a detection amount from the odor detection unit lower than a predetermined value and detecting a dust particle having a size less than a first specified value is detected from the dust detection unit; A time determining means for comparing the time measured by the measuring means with a specified time; an operation stopping means for stopping the operation of the blowing means when the time measured by the time determining means exceeds the specified time; Above A time storage unit that updates and stores a duration time during which the time measured by the interval determination unit continues to pass the specified time, and the time stored by the time storage unit is the first time. One storage time is stored, and the first storage time is stored as the second storage time when the first storage time continues to elapse and the specified time continues to elapse. And comparing the first storage time with the second storage time, and the comparison result of the time comparison means when the second storage time is longer than the first storage time. It is provided with a prescribed value changing means for changing to a second prescribed value that is larger than the first prescribed value instead of the prescribed value, and when the value is changed to the second prescribed value, the operation stopping means includes the time measuring means. Measured second specified value not yet Since the operation of the air blowing means is stopped based on the time during which only dust particles of a size are detected, the dust detection unit of the dust detection unit is in a period when dust such as yellow sand continuously entering from the outside is generated. Since sensitivity can be lowered, useless driving can be prevented.

Structure diagram of the air cleaner according to the first embodiment of the present invention. Same control block diagram Correlation diagram of dirt detection level and operating airflow Control flow chart showing processing of same time determination unit Control flow chart showing processing of same time comparison unit Control block diagram of Embodiment 2 of the present invention Control block diagram of Embodiment 3 of the present invention Control block diagram of Embodiment 4 of the present invention Control block diagram of Embodiment 5 of the present invention Structure of conventional air purifier Block diagram Same control flow chart

  According to the first aspect of the present invention, there is provided a cleaning means for cleaning the sucked dirty air, a blowing means for ventilating the cleaning means, and a dust detection unit capable of identifying the size of dust and detecting the amount of dirt. And an odor detection unit for detecting odor, and a control unit for determining and operating the blower operation air volume corresponding to the larger dirt amount of the dirt detection amount from the dust detection unit and the odor detection unit. The control unit measures the time during which only the dust particles having a detection amount from the odor detection unit lower than a predetermined value and detecting only dust particles having a size less than the first specified value are detected from the dust detection unit. Means, a time determining means for comparing the time measured by the time measuring means with a specified time, and stopping the operation of the blower means when the time measured by the time determining means exceeds the specified time. Stop And time storage means for updating and storing a duration time during which the time measured by the time determination means continues to pass the prescribed time, and the time stored by the time storage means is the first The first memory time is defined as the first memory time, and the elapsed time when the first memory time continues to elapse the specified time once and the predetermined time elapses again is defined as the second memory time. When storing as the storage time, the time comparison means for comparing the first storage time and the second storage time, and when the comparison result of the time comparison means is longer than the first storage time In place of the first specified value, a specified value changing means for changing to a second specified value larger than the first specified value is provided, and when the second specified value is changed, the operation stopping means is Time measurement means measure Has a configuration which stops the operation of said blower unit based on only has detected time dust particles size of less than a second predetermined value.

Thereby, the time measuring means measures the duration when the situation where the odor detection level is lower than a predetermined value and the dust detecting unit detects dust particles less than the first specified value occurs, and the time judging means When the continuation time is compared with a specified time and the continuation time is long, the operation stop means stops the operation of the blower means, and the storage means stores the update while updating the continuation time as the first storage time and The elapsed time when the duration time is once interrupted and the specified time continues to elapse again is stored as the second storage time, and the time comparison means stores the first storage time and the second storage time. If it is determined that the second storage time is long by comparing the time, the specified value changing means changes the specified value to the first specified value instead of the first specified value.
Since the operation stopping means can stop the operation of the air blowing means based on the time during which only dust particles having a size less than the second specified value measured by the time measuring means are detected, the operation stopping means continues from the outside. When the time when yellow sand or the like having a small particle diameter that cannot be removed due to intrusion occurs, the sensitivity of the dust detector is lowered, and unnecessary air cleaner operation can be prevented.

  According to a second aspect of the present invention, the control unit includes a specified value display unit for displaying that the specified value detected by the dust detection unit has been changed by the specified value changing unit. As a result, the user can recognize that the reference value for determining the size of the dust particles has increased, so the user has a time to generate yellow sand that continuously enters from the outside. However, there is an effect that it can be recognized.

  According to a third aspect of the present invention, the control unit is provided with a specified value selection operation unit that allows a user to select a specified value detected by the dust detection unit that is changed by the specified value changing means. As a result, even if the state of the specified value display unit changes, the user can select the specified value according to his / her own intention. Therefore, when the user is assumed to generate dust, the user himself / herself the dust detection unit. Therefore, when the dust is generated, the cleaning operation can be started immediately.

  According to a fourth aspect of the present invention, the control unit includes a specified value changing operation unit that allows a user to freely set a specified value detected by the dust detection unit that is changed by the specified value changing unit. . As a result, the user can change the second specified value for detecting the dust particles in the dust detection unit, so that the user can change the detected particle diameter according to the state of the dust generated in the room and can set the operation start level of the air cleaner. There is an effect that it can be selected.

  According to a fifth aspect of the present invention, the control unit changes the first value by the specified value changing unit when a predetermined period of time elapses after the specified value of the dust detection unit is changed to the second specified value by the specified value changing unit. It is configured to return to the specified value. As a result, it is possible to return the specified value of the dust detection unit to the first specified value when the generation amount decreases with respect to temporarily generated dust such as yellow sand. There is always an effect that the sensitivity of the dust detector can be maintained in an optimum state.

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

(Embodiment 1)
As shown in FIGS. 1 and 2, the main body 1 of the air purifier is formed in a substantially box shape, and an intake port 2 is formed on the side surface of the main body 1, and an open / close type intake port 3 is formed on the lower part of the main body 1. The main body 1 is provided with a filter 4 that is a cleaning means for purifying the intake air and a fan motor 5 that is a blowing means for passing air through the filter 4, and a blow-out section 6 is provided on the top surface of the main body 1. ing. By driving the fan motor 5, air is sucked in from the air inlet 2 and the openable / closable air inlet 3, cleaned through the filter 4, and then blown out from the blowing unit 6.

  The side surface of the main body 1 is provided with a dust detection unit 7 having an optical dust sensor 7a capable of detecting the size of dust and detecting the amount of dirt as a dirt detection means, and an odor detection part 8 for detecting odors. A control unit 9 that controls the fan motor 5 by determining the amount of dirt detected from the detection unit 7 and the odor detection unit 8 is provided.

  Further, the control unit 9 measures the detection time when the detection amount detected by the odor detection unit 8 is lower than a predetermined value and the size of the dust particles detected from the dust detection unit 7 is less than 1 μm. 10, a time determination unit 11 that compares the time measured by the time measurement unit 10 with the specified time, and an operation that stops the operation of the fan motor 5 when the time measured by the time determination unit 11 exceeds the specified time. The stop unit 12 and a time storage unit 13 for updating and storing the duration time during which the time measured by the time determination unit 11 continues to pass the prescribed time are provided, and the time stored by the time storage unit 13 is one. The first time is defined as the first memory time, and the time elapsed when the first memory time continues to elapse the specified time and the specified time elapses again occurs. Record Stores as a time, the time comparison section 14 for comparing the first storage time and the second storage time is also provided.

  The control unit 9 includes a specified value changing unit 15 that changes the size of the dust detected by the dust detecting unit 7.

  In the above configuration, when the power source is energized, the control unit 9 performs a process of converting the output signals detected by the dust detection unit 7 and the odor detection unit 8 into a contamination level value of 0 to 5, and operates with the larger contamination level value. The fan motor 5 is operated according to the air volume. At this time, the air flow rate of the fan motor 5 with respect to the dirt level detected by the dust detection unit 7 and the odor detection unit 8 has the relationship shown in FIG.

  As shown in FIG. 4, the dust detection unit 7 identifies whether the size of the detected dust is less than 1 μm or more than 1 μm, and transmits the signal to the control unit 9. The control unit 9 measures the state in which the detected dirt level value from the odor detecting unit 8 is 0, the dust detected dirt level value of 1 μm or more from the dust detecting unit 7 is 0, and only the dust dirt of less than 1 μm is detected. The time is measured by the unit 10 and the time determination unit 11 determines whether or not the measurement time has passed for one hour or more. The time determination unit 11 stores the first storage time in the time storage unit 13 if one hour or more has elapsed, and stops the operation of the fan motor 5 by the operation stop unit 12.

  Next, the control unit 9 stops the fan motor 5 from the operation stop unit 12 when dust of 1 μm or more is detected from the dust detection unit 7 such that the measurement time stored in the first storage time is interrupted. It is canceled and the operation of the fan motor 5 is started. After that, the state in which the detected dirt level value from the odor detector 8 is 0 again, the dust detected dirt level value of 1 μm or more from the dust detector 7 is also 0, and only the dust dirt of less than 1 μm is detected is continued. Then, the time measurement unit 10 measures the time, and the time determination unit 11 determines whether or not the measurement time has passed one hour or more. The time determination unit 11 stores the second storage time in the time storage unit 13 if one hour or more has elapsed, and simultaneously stops the operation of the fan motor 5 by the operation stop unit 12 as shown in FIG. The time comparison unit 14 that compares the storage time and the second storage time compares the time. If the second storage time is longer than the first storage time, it is determined that the dust having a small particle diameter has increased, and the specified value change unit 15 changes the specified value of the size of dust detected by the dust detection unit 7 to 3 μm or more so that dust of less than 1 μm that cannot be collected even if it enters the room from the outside, such as yellow sand, is not detected. .

  As described above, if dust with a size of less than 1 μm continues to be generated continuously for 1 hour or more, it is determined that primary dust such as yellow sand has entered the room from the outside. By reducing the detection level of the dust detection unit, it is possible to prevent useless operation of the air purifier without performing operation with dust that cannot be captured, such as yellow sand.

  In addition, the continuous time was set to 1 hour based on the time required to remove dust generated temporarily in the room, and the dust flowing continuously from the outside is restricted. It is something that can not be taken out within a certain time.

  In addition, as shown in FIG. 6, in the present embodiment, the specified value changing unit 15 only changes the specified value for detecting the dust of the dust detecting unit 7, but the specified value for detecting the dust of the dust detecting unit 7 is changed. A specified value display unit 16 for notifying that a change has occurred may be provided to notify the user that the specified value of the dust detection unit 7 has been changed so that the user can easily recognize it.

  In addition, as shown in FIG. 7, in this embodiment, the specified value changing unit 15 only changes the specified value for detecting the dust of the dust detecting unit 7, but the specified value for detecting the dust of the dust detecting unit 7 is changed. Even if a change occurs, a specified value selection operation unit 17 that allows the user to select a specified value is provided so that even if the specified value of the dust detection unit 7 is changed, it can be restored to the previous specified value by the user's intention. By doing so, the user can change according to the life scene, so the convenience can be improved.

  Further, as shown in FIG. 8, in this embodiment, the specified value changing unit 15 only changes the specified value for detecting dust in the dust detection unit 7, but the user can set the changed specified value itself. Since the specified value change operation unit 18 is provided and the user can set the specified value according to the life scene, the convenience for the user can be improved.

  Further, as shown in FIG. 9, in the present embodiment, the specified value changing unit 15 only changes the specified value for detecting the dust of the dust detecting unit 7, but the control unit 9 detects the dust of the dust detecting unit 7. By providing a timer count unit 19 that starts counting after the specified value to be changed is changed, and when the specified timer count value elapses, the specified value for detecting dust in the dust detection unit 7 is returned to the original value. As described above, the sensitivity of the dust detection unit 7 is temporarily reduced with respect to dust that is temporarily generated and enters from the outside, and automatically returns to the original sensitivity when the time has passed. Clean operation can be performed.

  The air cleaner according to the present invention is intended to improve the operation efficiency without wasteful operation for small dust that cannot be collected, and is also useful as a technique for use in a vacuum cleaner.

DESCRIPTION OF SYMBOLS 1 Main body 2 Intake port 3 Opening-and-closing type intake port 4 Filter 5 Fan motor 6 Outlet part 7 Dust detection part 8 Odor detection part 9 Control part 10 Time measurement part 11 Time judgment part 12 Operation stop part 13 Time storage part 14 Time comparison part 15 Standard value change section

Claims (5)

A cleaning unit that cleans the sucked dirty air, a blowing unit that ventilates the cleaning unit, a dust detection unit that can detect the size of dust and the amount of contamination, and an odor detection unit that detects odors,
A control unit configured to determine and operate an operating air volume of the blowing unit corresponding to a larger amount of dirt among the dirt detection amounts from the dust detection unit and the odor detection unit, and the control unit includes the odor detection unit And a time measuring means for measuring a time during which only the dust particles having a size smaller than a predetermined value and less than a first specified value are detected from the dust detecting section, and the time measuring means. A time judging means for comparing the measured time with a prescribed time, an operation stopping means for stopping the operation of the blower means when the time measured by the time judging means exceeds the prescribed time, and the time judging means Time storage means for updating and storing the duration time during which the measured time continues to pass the specified time is provided, and the time stored by the time storage means is the first time stored in the first storage time. And the first memory time is stored as the second memory time when the first memory time continues to pass the specified time and the specified time continues to pass again. The time comparison means for comparing the first memory time and the second memory time, and when the comparison result of the time comparison means is longer in the second memory time than in the first memory time, the first prescribed value is set. It is provided with a specified value changing means for changing to a second specified value that is larger than the first specified value, and when the value is changed to the second specified value, the operation stopping means is the first measured by the time measuring means. 2. An air purifier that stops the operation of the blowing means based on the time during which only dust particles having a size less than a specified value are detected.   The air cleaner according to claim 1, wherein the control unit is provided with a specified value display unit for displaying that the specified value detected by the dust detection unit has been changed, so as to notify the user.   The control unit is provided with a specified value selection operation unit capable of selecting a specified value detected by the dust detection unit, and the specified value can be selected according to his / her own intention even when the state of the specified value display unit changes. 2. The air cleaner according to 2.   The said control part was provided with the regulation value change operation part which can change the regulation value which the said dust detection part detects, The user himself / herself can change the 2nd regulation value of the said dust detection part. Air purifier.   5. The air cleaner according to claim 1, wherein the control unit is configured to automatically return to the first specified value when a predetermined period has elapsed after the specified value of the dust detection unit is changed to the second specified value.

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