JP2010017674A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively and quickly clean air, since floating spaces are different depending on the sizes of dust in a room, and dust readily settles in a low space where large dust floats. <P>SOLUTION: By opening an opening/closing type air-intake port 3 provided at the lower part of a body 1 before determining open or close according to the size of dust detected by a dust detection part set in the body 1, large dust floating in the lower space is sucked, and the opening/closing type air-intake port 3 is closed when detecting no large dust at the dust detection part to remove small dust floating in a high space, to thereby quickly clean the air in the room. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air purifier that detects indoor air contamination with a dust sensor and a gas sensor, and that 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. 13 and 14. 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 for detecting indoor air contamination is provided on the side surface of the main body 101.

In the above configuration, when the dust sensor 107 detects dirt, the control unit 106 changes the amount of ventilation by changing the rotation speed of the fan motor 105 according to the magnitude of the signal from the dust sensor 107, and performs cleaning corresponding to indoor dirt. Operation is performed (for example, refer to Patent Document 1).
Japanese Patent No. 2758655

  In such a conventional air purifier, the air flow rate is changed depending on the amount of dirt regardless of the size of the detected dirt particle size. There is a problem that it cannot settle and settle, and it is required to surely clean even dirt that has a large particle size that tends to settle.

  In addition, there is a problem that when a large amount of dust is present at a location away from the air cleaner, it cannot be detected by the dust detection unit, and it is required to be cleaned more quickly.

  In addition, when the user is in the room, there is a problem that the user wants to collect dust before sinking in order to soar the dust on the floor surface. It is requested.

  In addition, even when the user leaves the room, there is a problem that the user wants to collect dust before sinking in order to raise the dust, and it is required to clean the dust that the user has raised.

  In addition, even when the user leaves the room, there is a problem that the user wants to collect dust before sinking in order to raise the dust, and it is required to clean up the dust raised by the user more quickly.

  The present invention solves such a conventional problem, collects large dust that tends to settle from the start of operation, and efficiently collects large dust that tends to settle by detecting a person's occupancy. It aims to provide an air purifier.

  In order to achieve the above object, an air cleaner according to the present invention has an air inlet provided on a side surface of a main body, a cleaning means for cleaning dirty air sucked from the air inlet, and an air blown through the cleaning means. Means, a blowing means for blowing clean air into the room, an openable and closable intake means provided in the lower part of the main body, a dirt detecting means for detecting dirt in the air, and a signal from the dirt detecting means A control unit that determines an air volume of the blowing unit and controls the operation, and the control unit opens the intake unit at the start of operation and closes the intake unit when no dirt is detected from the dirt detection unit; It is a thing.

  By this means, even if no dust is present around the main body at the start of operation, an air purifier capable of efficiently removing dirt by increasing the suction capacity near the floor in the room by opening the intake means provided at the lower part of the main body is obtained. .

  In order to achieve the above object, the air cleaner of the present invention opens the air intake means so that the air volume of the air blowing means is increased when no dirt is detected from the dirt detecting means.

  By this means, even if there is no dust around the main body at the start of operation, the intake means provided at the lower part of the main body is opened to increase the operating air flow, so that the suction capacity near the floor in the room is further increased and dirt can be efficiently removed A cleaner is obtained.

  Further, in order to achieve the above object, the air cleaner of the present invention is provided with a human detection means, and even when the air intake means is opened and dirt is not detected by the dirt detection means, the presence of a person is detected from the human detection means. In this case, the intake means is left open.

  With this means, an air cleaner that can efficiently remove dirt can be obtained by opening the air intake means provided at the lower part of the main body for dust that has been lifted from the floor surface by the user.

  In order to achieve the above object, the air cleaner of the present invention opens the intake means for a certain period even when the dirt detection means does not detect dirt and the person detection means no longer detects the user's occupancy. It has been left.

  With this means, air dust can be removed efficiently by increasing the suction capacity near the floor by keeping the air intake means open at the bottom of the main unit for dust that has risen from the floor when the user leaves the room. A machine is obtained.

  In order to achieve the above object, the air cleaner of the present invention opens the intake means for a certain period even when the dirt detection means does not detect dirt and the person detection means no longer detects the user's occupancy. The air volume of the blowing means is increased as it is.

  By this means, even if the dust rises from the floor when the user leaves the room, the suction capacity near the floor is increased by increasing the air volume while the air intake means provided at the bottom of the main body is open, and dirt can be removed more quickly. An air purifier is obtained.

  According to the present invention, even if the dust detection unit does not detect dirt at the start of operation, the suction means at the lower part of the main body is opened, so that dust floating near the floor surface away from the main body can be removed more quickly and efficiently. It is possible to provide an air purifier that is effective.

  Also, even if the dust detector does not detect dirt at the start of operation, the air intake means at the bottom of the main unit is opened to further increase the operating air volume, so that dust floating near the floor surface farther away from the main unit can be made more quickly and efficiently. It is possible to provide an air cleaner having an effect that it can be removed well.

  In addition, when the user's presence is detected, it is said that by opening the intake means provided at the lower part of the body for dust that has been raised from the floor by the person, the suction capacity near the floor is increased and dirt can be efficiently removed An effective air purifier can be provided.

  In addition, when the user's occupancy is no longer detected, the suction capacity near the floor can be maintained by keeping the air intake means open at the bottom of the main unit for dust that has risen from the floor when the person leaves the room. Can provide an air purifier having an effect of efficiently removing dirt.

  Also, when it is no longer possible to detect the presence of the user's occupancy, the dust near the floor is also increased by increasing the air volume with the air intake means provided at the bottom of the main body open for the dust that has risen from the floor when the person leaves the room. It is possible to provide an air purifier having an effect of increasing the suction capability and removing dirt more quickly.

  According to the first aspect of the present invention, there is provided an intake port provided on a side surface of a main body, a cleaning unit for cleaning dirty air sucked from the intake port, a blowing unit for ventilating the cleaning unit, and a cleaning unit. A blowing means for blowing the air into the room, an openable and closable intake means provided at the lower part of the main body, a dirt detecting means for detecting dirt in the air, and a signal from the dirt detecting means, A control unit that determines an air volume and controls the operation, and the control unit opens the intake unit at the start of operation and closes the intake unit when no dirt is detected from the dirt detection unit; Yes, even if the dust detection unit does not detect dirt at the start of operation, it opens the air intake means at the bottom of the main body, so it has the effect of removing dust floating near the floor surface away from the main body more quickly and efficiently. .

  In addition, the control unit is configured to increase the air volume of the blowing unit when the intake unit is opened and no contamination is detected by the contamination detection unit, and even if the dust detection unit does not detect the contamination at the start of operation. Since the air intake means at the lower part of the main body is opened to further increase the operating air volume, dust floating near the floor surface farther from the main body can be removed more quickly and efficiently.

  Also, a person detection means is provided, and when the air intake means is opened and dirt is not detected by the dirt detection means, the air intake means remains open when the person detection means detects a person's occupancy. When a user's occupancy is detected, it is possible to efficiently remove dust by raising the suction capacity near the floor by opening the air inlet provided in the lower part of the body for dust that has been raised from the floor by a person. It has the action.

  In addition, even if no dirt is detected by the dirt detecting means and the person's occupancy is no longer detected by the person detecting means, the air intake means remains open for a certain period of time, and the user's occupancy is detected. When it has run out, the dust that has been lifted from the floor when the person leaves the room can also effectively remove dirt by increasing the suction capacity near the floor by leaving the air intake means provided at the bottom of the main body open. Have

  In addition, even when no dirt is detected by the dirt detecting means and the person's occupancy is no longer detected by the person detecting means, the air flow rate of the blowing means is increased by keeping the intake means open for a certain period of time. When the user's room is no longer detected, the dust that has risen from the floor when the person leaves the room is also sucked near the floor by raising the air volume while the air intake means provided at the bottom of the body is open It has the effect of increasing the ability and removing dirt more quickly.

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

(Embodiment 1)
As shown in FIGS. 1 to 5, the main body 1 of the air purifier is formed in a substantially box shape, and a front panel is provided on the front surface of the main body 1. As a possible intake means, an open / close intake 3 is formed. The main body 1 is provided with a filter 4 as a purifying means for purifying the air and a fan motor 5 as an air blowing means for ventilating the filter 4, and a blowout portion 6 is provided on the top surface of the main body 1. . By driving the fan motor 5, air is simultaneously sucked in from the air inlet 2 and the open / close type air inlet 3, cleaned through the filter 4, and then blown out from the blowing portion 6. Further, since the fan motor 5 is driven so that air is simultaneously sucked from the air inlet 2 and the open / close air inlet 3, the air sucked from the other air inlet 2 is increased by closing one open / close air inlet 3. It has a configuration that can.

  A dust detection unit 7 having an optical dust sensor 7 a as a dirt detection means is provided on the side surface of the main body 1, an operation unit 8 is provided at the upper front of the main unit 1, and an arithmetic unit 10 is provided in the control unit 9. Provided.

  As shown in FIGS. 2 to 6, the dust detection unit 7 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 9. The control unit 9 calculates the signal at the calculation unit 10, and when there is a lot of dust of 3 μm or more, the opening / closing type inlet 3 is opened to increase the amount of suction from below, and when there is a lot of dust of less than 3 μm The open / close air inlet 3 is closed to increase the suction from the side air inlet 2 to remove air dirt.

  In the above configuration, as shown in the flowchart of FIG. 3, when the operation is started, the control unit 9 first opens the open / close air inlet 3 regardless of the detection result of the dust detection unit 7, and the output detected by the dust detection unit 7. The signal is converted into a dirt level value of 0 to 5, and the fan motor 5 is operated according to this dirt level value as shown in FIG.

  When dust of 3 μm or more is detected by the dust detection unit 7 after 5 minutes from the start of operation, the control unit 9 moves downward with the open / close inlet 3 being open as shown in FIG. If the dust intake of 3μm or more is not detected, the open / close type intake port 3 is closed and the intake from the side intake port 2 is increased as shown in FIG. Remove air dirt.

  As shown in FIG. 6 (a), when a particle having a large particle size of 3 μm or more is detected, the opening / closing type air inlet 3 is opened and the fan motor 5 is controlled against the dirt level value of the dust detector 7. It controls the operating air volume. In addition, as shown in FIG. 6 (b), when particles having a particle size of 3 μm or more are not detected, that is, when particles having a small particle size are detected, the open / close inlet 3 is closed, In order to perform only the suction from the side air inlet 2, the operation air volume of the fan motor 5 is controlled with respect to the dirt level value of the dust detection unit 7.

  As described above, increasing the amount of suction from the start of operation efficiently removes dust present in the low-frequency space in the room, and if dust is not detected, reduces the amount of suction below and increases the amount of suction above Thus, it is possible to operate so as to increase the removal efficiency for indoor high-frequency spaces.

  In this embodiment, the opening and closing of the open / close inlet 3 is determined by the detection content of the dust detection unit 5 minutes after the start of operation. However, even if the time from the start of operation is changed depending on the size of the room used. good.

(Embodiment 2)
The present embodiment is different from the first embodiment only in the control method, and the same components are given the same reference numerals and detailed description thereof is omitted.

  As shown in FIG. 7, when the dust detecting unit 7 detects dust of 3 μm or more after 5 minutes from the start of operation, the control unit 9 maintains the suction amount from below while the open / close inlet 3 is opened. If dust of 3 μm or more is not detected, the air flow of the fan motor 5 is increased by one rank from weak to medium with the open / close inlet 3 being opened, and the amount of suction from below is further increased to remove air dirt. To do. If dust of 3 μm or more is detected by the dust detection unit 7 after 5 minutes have passed, the suction amount from below is maintained with the openable inlet 3 being opened, and dust of 3 μm or more is not detected. Closes the open / close air inlet 3 to increase the suction from the side surface and remove air dirt respectively. If no dust is detected even after 10 minutes from the start of operation, the open / close inlet 3 is closed and the intake from the side intake 2 is increased.

  If dust cannot be detected as described above, it can be more efficiently removed by increasing the operating air volume and increasing the amount of suction from below.

(Embodiment 3)
Since the present embodiment is provided with a human detection unit 11 for detecting a user as compared with the first embodiment, the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIGS. 8 to 10, the person detection unit 11 is provided on the front surface of the main body 1 and detects infrared rays emitted from the user, and detects the movement of the user.

  In the above configuration, the control unit 9 starts the operation of the main body 1 and simultaneously opens the open / close intake port 3 to start the operation with a low air volume. Thereafter, until 5 minutes have passed, the air flow of the fan motor 5 is changed according to the dirt level detected by the dust detector 7 and the operation is performed. And if the dust of 3 μm or more is detected after 5 minutes, the operation is continued with the open / close inlet 3 being opened, and the dust is not detected when the dust of 3 μm or more is not detected or from the start of the operation. In this case, it is determined based on whether or not the user is detected from the human detection unit 11, and when there is human detection, the operation is continued with the open / close inlet 3 being opened, and the amount of air contamination is maintained by maintaining the suction amount from below. Remove. When there is no human detection, the open / close air inlet 3 is closed to increase the amount of suction from the side air inlet 2 to remove air contamination.

  Moreover, as shown in FIG. 11, the control part 9 opens the opening-and-closing type inlet 3 simultaneously with the start of operation | movement of the main body 1, and starts an operation | movement with a low air volume. Thereafter, until 5 minutes have passed, the air flow of the fan motor 5 is changed according to the dirt level detected by the dust detector 7 and the operation is performed. And if the dust of 3 μm or more is detected after 5 minutes, the operation is continued with the open / close inlet 3 being opened, and the dust is not detected when the dust of 3 μm or more is not detected or from the start of the operation. In this case, it is determined based on whether or not a user is detected from the human detection unit 11, and when there is human detection, the human detection flag is turned on and the operation is continued with the open / close inlet 3 being opened, and the amount of suction from below To remove air stains. Also, when there is no human detection, it is judged whether the human detection flag is on or off, and when it is on, the operation is continued for 5 minutes with the open / close inlet 3 being opened, and the dust that has been rolled up when the user leaves the room is removed. Then, the human detection flag is turned off, and the operation is continued based on the detection result by the dust detection unit 7. Next, when the human detection flag is off, the open / close air inlet 3 is closed to increase the amount of suction from the side air inlet 2 to remove air contamination.

  In addition, as shown in FIG. 12, the control unit 9 starts the operation of the main body 1 and opens the open / close intake port 3 at the same time, and starts the operation with a low air volume. Thereafter, until 5 minutes have passed, the air flow of the fan motor 5 is changed according to the dirt level detected by the dust detector 7 and the operation is performed. And if the dust of 3 μm or more is detected after 5 minutes, the operation is continued with the open / close inlet 3 being opened, and the dust is not detected when the dust of 3 μm or more is not detected or from the start of the operation. In this case, it is determined based on whether or not a user is detected from the human detection unit 11, and when there is human detection, the human detection flag is turned on and the operation is continued with the open / close inlet 3 being opened, and the amount of suction from below To remove air stains. Also, when there is no human detection, it is determined whether the human detection flag is on or off. When the flag is on, the air flow rate of the fan motor 5 is changed from weak to medium while the openable inlet 3 is opened, and suction is performed from below. By further increasing the amount, the dust that has been rolled up when the user leaves the room is removed, and then the human detection flag is turned off and the operation is continued based on the detection result by the dust detection unit 7. Next, when the human detection flag is off, the open / close air inlet 3 is closed to increase the amount of suction from the side air inlet 2 to remove air contamination.

  As described above, by increasing the amount of suction from below when detecting the user's entry, the dust that the user has soared can be removed efficiently, and when the user leaves the room, It is possible to efficiently remove the dust that has risen by maintaining the suction of air and further increasing the operating air volume.

  Dust floating near the floor in the room is collected efficiently by opening and closing the air intake, so it can also be applied to the operation control of heaters and dehumidifiers installed on the floor.

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 Schematic diagram of the intake air volume of the air purifier ((A) Schematic diagram of the intake air volume when the open / close inlet is open, (B) Schematic diagram of the intake air volume when the open / close inlet is closed) Correlation diagram of operating air volume against dirt level value of the detector Correlation diagram of operating air volume and intake port opening / closing for the dirt level value of the detection unit ((a) showing the operating air volume and opening / closing of the open / close air inlet for the dirt level value of the dust detection unit when detecting a particle having a large particle size Fig. (B) Diagram showing operating air volume and opening / closing of open / close air inlet for dirt level value of dust detection unit when small particle size is detected) Control flow chart of Embodiment 2 of the present invention External perspective view of a partially broken air cleaner of Embodiment 3 of the present invention Same control block diagram Same control flowchart Second control flowchart Third control flowchart External perspective view of a conventional air purifier Correlation diagram of operating air volume against dirt level value of the detector

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Air inlet 3 Opening / closing type air inlet 4 Filter 5 Fan motor 6 Blowing part 7 Dust detection part 9 Control part

Claims (5)

An air inlet provided on a side surface of the main body, a cleaning means for cleaning the dirty air sucked from the air inlet, a blowing means for ventilating the cleaning means, and an outlet for blowing the cleaned air into the room Means, an openable / closable intake means provided at the lower part of the main body, a dirt detecting means for detecting dirt in the air, and a control unit for determining the air volume of the blowing means from a signal from the dirt detecting means and controlling the operation. And the said control part opens the said intake means at the time of a driving | operation start, and when the dirt is not detected from the said dirt detection means, the said air purifier is closed. 2. The air cleaner according to claim 1, wherein the controller opens the air intake means to increase the air volume of the blower means when no dirt is detected by the dirt detection means. 2. A human detection means is provided, and the air intake means is kept open when the air intake means is opened and the presence of a person is detected from the human detection means even when the dirt detection means does not detect dirt. The air cleaner described. 4. The air cleaner according to claim 3, wherein the air intake means is kept open for a certain period even when no dirt is detected by the dirt detecting means and no human presence is detected by the human detecting means. 5. The air volume of the blower means is increased by keeping the intake means open for a certain period even when no dirt is detected by the dirt detection means and no person is detected from the human detection means. The air cleaner described.

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