JP2007117142A - Annunciator and vacuum cleaner equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make recognition of an announcement easier while executing the announcement suitable for the actual feel of a user, as well as to allow the user to recognize invisible dust or the quantity of dust by an announcing means. <P>SOLUTION: The annunciator of the vacuum cleaner comprises a first dust detecting means 35, a second duct detecting means 36, a first retaining means 37, a second retaining means 38, and an announcing means composed of a display means 11 and a display control means 40 for controlling the display of the display means. The first and second retaining means 37 and 38 add retaining time to respective signals based on a first dust detection signal detected by the first dust detecting means 35 and a second dust detection signal detected by the second dust detecting means 36 and output first and second retaining signals. The announcing means announces the detected dust based on the first and second retaining signals. With this structure, the dust with different sizes can be detected by size, and the recognition of the announcement can be made easier. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a notification device for displaying the state of dust in general household or business use vacuum cleaners, and includes attachments such as floor suction tools used in vacuum cleaners.

  FIG. 11 shows a schematic configuration diagram of a conventional vacuum cleaner.

  In FIG. 11, 1 is a main body of a vacuum cleaner, 2 is an electric blower that is built in the main body 1 and generates a suction force, and 3 is an operation mode of the electric blower 2 with different inputs (supply power). 5 is an extension tube, 8 is a suction tool for sucking dust and the like in contact with the surface to be cleaned, and 6 is a dust collection chamber for storing the sucked dust. Yes, the hose 3 and the dust collection chamber 6 are connected via an intake port 7 provided in the main body 1, and the dust collection chamber 6, the hose 3, the extension pipe 5, and the suction tool 8 form an intake passage.

  In the vicinity of the connection portion 12 of the hose 3 with the main body 1, there is a detection portion 22 of dust detection means 10 for detecting dust passing through an intake passage, which will be described later, and the operation portion 4 includes the dust detection means 10. Display means 11 is provided for displaying the detection status of dust.

  In the vacuum cleaner configured as described above, the user operates the operation unit 4 to supply electric power to the electric blower 2, and from the stop mode in which the electric power supply to the electric blower 2 is stopped to the operation mode. If it transfers, the dust attracted | sucked from the suction tool 8 will be accumulate | stored in the dust collection chamber 6 via an intake route.

  Conventionally, in the configuration as described above, the dust detection means 10 has a configuration as shown in FIGS. 12 and 13, a light emitting unit 20 that emits light to an intake passage through which dust flows, and a light receiving unit 21 that receives light from the light emitting unit 20 and outputs a signal corresponding to the amount of received light are an air passage through which dust flows. The light emitting unit 20 is provided opposite to the light emitting unit 20 (hereinafter, the light emitting unit 20 and the light receiving unit 21 are collectively referred to as a detecting unit 22). After the output signal Vs from the light receiving unit 21 is amplified by the amplification unit 23, the signal Va is converted into a pulse Sa by the pulse conversion unit 24 and input to the dust determination unit 25. The dust detection unit 10 includes a detection unit 22, an amplification unit 23, and a pulse conversion unit. The number of pulses Sa output from the pulse conversion means 24 increases as the number of dusts passing through the detection unit 22 increases, and as the number decreases, the number of pulses Sa corresponding to the number of dusts is output. The large particle dust is output so that the pulse width is wide, and the small particle pulse is output so that the pulse width is narrow.

  The dust judgment means 25 counts the number of the pulses Sa, and at the same time, measures the pulse width and corrects to increase the number counted to the pulse Sa when the pulse width is wide, that is, when the dust is large. It is possible to recognize the amount of dust passing through the intake passage and determine the dust on the floor.

  Conventionally, the supply power of the electric blower 2 is variably controlled by the amount of the pulse Sa, and the state of the supply power is displayed in multiple stages on the display means 11 or as a control method of the control target for the detected dirt. In addition, there is disclosed one that performs control for holding the power supplied to the electric blower 2 to be controlled for a certain period with respect to the output of the dust detection means 10 (see, for example, Patent Document 1).

  Moreover, what displays the detection condition of the dust detection means 10 on the display means 11 independently is disclosed with respect to the electric power supplied to the electric blower 2 (for example, refer patent document 2).

In addition, there is also disclosed a method in which tracking of a control target with respect to detected dirt is not performed in real time but is performed in a stepwise manner after a certain time (see, for example, Patent Document 3).
Japanese Patent No. 2000648 Japanese Patent No. 2058676 JP 2001-74301 A

  In recent years, due to changes in the living environment, interest in house dust containing invisible pollen and the like has increased, and there is a need for a vacuum cleaner that can detect and visually recognize these fine dust.

  The dust to be cleaned in a general household is from a few millimeters order visible to a few hundreds of micrometers such as pollen that is difficult to visually recognize, such as fine particles generally called about 20 μm to 40 μm and dust. There are various sizes of particles.

  However, in the conventional configuration, in response to fine dust such as pollen and trying to set the display means to display the state of dust according to the number of pulses, in a place where there is a lot of relatively large particles of dust, When there is an attempt to set to display the status of dust in response to dust of a certain size or larger, such as sand dust, because the number of wide pulses increases and the number of pulses decreases. Since there is no reaction in a place where there is a lot of fine dust, the display is such that no dust is present. In order to compensate for the decrease in the number of pulses based on fine dust, when a predetermined number of pulses is reached and a display is provided with a holding period of a certain period, Although the visibility to the device user is improved, the number of pulses is large where there is a lot of fine dust, so that the display is far from the user's feeling that there is more dust than actual.

  As described above, the characteristics have been matched to dust of a certain size so far, and for the dust of various particle sizes including fine dust, the notification that is suitable for the user and the detected dirt It had the subject that two coexistence, the improvement of the visibility which hold | maintains alerting | reporting, cannot be performed.

  In order to solve the above-described conventional problems, the notification device of the present invention includes a first dust detection unit that detects dust of a predetermined size that passes through the intake passage, and the predetermined size that passes through the intake passage. A second dust detecting means for detecting different larger dust, a first holding means for holding dust information by a first dust detection signal detected by the first dust detecting means for a predetermined time, and the second A second holding means for holding dust information based on a second dust detection signal detected by the dust detecting means for a predetermined time, and the first holding signal held by the first holding means and the second holding means. And a notification means for reporting the presence or absence or state of dust based on the second holding signal held by.

  As a result, different sizes and types of dust can be detected for each size of the dust, and notification is made with a predetermined time that is appropriate for the user's feeling set for each different dust. Thus, it is possible to perform appropriate notification appropriate to the user's feeling while ensuring easy recognition.

  The notification device according to the present invention can not only recognize the invisible dust and the amount of dust, etc., by the notification means, up to fine dust such as pollen, but also perform notification appropriate to the user's feeling. The ease of recognizing the notification can be improved.

  According to a first aspect of the present invention, there is provided a first dust detecting means for detecting dust having a predetermined size passing through the intake flow path, and a second dust for detecting a larger dust different from the predetermined size passing through the intake flow path. Dust detection means, first holding means for holding dust information based on the first dust detection signal detected by the first dust detection means for a predetermined time, and second dust detection signal detected by the second dust detection means Second holding means for holding the dust information for a predetermined time, and based on the first holding signal held by the first holding means and the second holding signal held by the second holding means, Since it has a configuration of notifying means for notifying the presence or absence or state, it is notified with holding of the holding time set for each dust, and it is easy to recognize the notification while performing notification appropriate for the user. Can be improved.

  The second invention is different from the detection unit for detecting the dust passing through the intake passage, the first dust detection signal that reacts to the dust of a predetermined size from the detection result of the detection unit, and the predetermined size. Dust detection means having a classification signal output means for outputting a second dust detection signal that reacts to larger dust, and first holding means for holding dust information based on the first dust detection signal for a predetermined time; A second holding means for holding dust information based on the second dust detection signal for a predetermined time; a first holding signal held by the first holding means; and a second holding held by the second holding means. Based on the signal, it is configured to have a notification means for reporting the presence or absence or state of dust, and can be configured with one detection unit, and is notified with the retention time set for each dust, and the user's Appropriate While the notification, it is possible to improve the recognition ease of the notification.

  In the third aspect of the invention, in particular, the predetermined time set by the first holding unit and the second holding unit of the first or second aspect is set to a different value. Can be identified.

  In the fourth invention, in particular, the first holding means of any one of the first to third inventions shortens the first holding time when the first dust detection signal changes in a direction in which dust increases. As a result, the direction in which dust with a small particle diameter, such as pollen, decreases, keeps the easiness of recognizing the notification by holding, and when the dust increases, the notification according to the amount of dust is made in a short time. It can be performed.

  In the fifth invention, in particular, the second holding means of any one of the first to third inventions shortens the second holding time when the second dust detection signal changes in a direction in which dust increases. As a result, the direction in which dust with a relatively large particle size, such as sand dust, decreases is easily adjusted according to the amount of dust when the amount of dust increases while maintaining the ease of recognizing notifications. Can be notified.

  In particular, the sixth invention is provided with a comparing means for comparing the first holding signal and the second holding signal of any one of the first to third inventions and outputting one of the holding signals, and the notifying means Since the notification is performed based on the holding signal output from the comparison means, the notification means can be unified and can be realized with a simple configuration.

  In the seventh aspect of the invention, in particular, since the comparison means of the sixth aspect of the invention outputs the retention signal with the larger amount of dirt, it can be realized with a simple configuration, and the dirt can be obtained regardless of the size of the dust. Since the notification is held until there is no more, it is possible to improve not only the ease of recognition of the notification but also the degree of recognition that dust has been removed.

  In the eighth aspect of the invention, in particular, the first holding time and the second holding time are set according to the ratio of dust in the first dust detection signal and the second dust detection signal of any one of the first to third inventions. Since the third holding determining means for determining is configured, the first holding time and the second holding time are variably set according to the configuration of the dust passing through the detection unit, so that the configuration of the dust is set. The notification can be held according to the actual feeling.

  The ninth aspect of the invention is particularly the first holding means or the second holding means according to the amount of dust in the first dust detection signal or the second dust detection signal of any one of the first to eighth inventions. Alternatively, since the third holding means can change the holding time, the holding time set according to the amount of dust improves the ease of recognizing the amount of dust by the notification means, and at the same time, the more dust there is. By setting the holding time to be long, the amount of dust can be more felt by the notification means.

  Since the tenth aspect of the invention is the vacuum cleaner provided with the notification device according to any one of the first to ninth aspects, the user of the vacuum cleaner can reduce the amount of dust with various sizes. In addition, it becomes easier to recognize the removal status, and not only the accuracy of the cleaning work is improved, but also the efficiency can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In addition, about the components of the same structure as the past, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  FIG. 1 is a block diagram of control of a notification device for a vacuum cleaner according to Embodiment 1 of the present invention.

  In FIG. 1, reference numeral 20 denotes a light emitting unit composed of an infrared light emitting diode and the like, and 21 denotes a light receiving unit such as a phototransistor. A signal Vs corresponding to the dust is output when dust passes between the two. Is done. Reference numeral 30 denotes a first amplifying unit which is composed of an operational amplifier or the like and amplifies the signal Vs output from the detection unit 22 at a predetermined first amplification factor, which has an amplification function and a filter function, and has a predetermined frequency component. Only the signal of is output. Reference numeral 32 denotes a first pulse converter that is configured by a comparator or the like and compares the signal output from the first amplifying unit 30 with the first reference voltage, and outputs a high signal if it is high, and outputs a low signal if it is low. is there. Reference numeral 31 is an operational amplifier or the like, and is a second amplification means that amplifies the signal Vs output from the detection unit 22 at a predetermined second amplification factor different from the first amplification factor, and has an amplification function and a filter function. Only a signal having a predetermined frequency component is output. Reference numeral 33 denotes a second pulse conversion unit configured by a comparator or the like, which compares a signal output from the second amplifying unit 31 with a second reference voltage, and outputs a High signal output if high and a Low signal output if low. is there.

  The detection unit 22, the first amplifying unit 30, and the first pulse converting unit 32 constitute a first dust detecting unit 35 (the thick dotted line in FIG. 1), and the output of the first pulse converting unit 32 is It is output as the first dust detection signal. Further, the detection unit 22, the second amplification means 31, and the second pulse conversion means 33 constitute a second dust detection means 36 (thick dashed line in FIG. 1), and the second pulse conversion means 33. Is output as the second dust detection signal. The amplification factor of the second amplifying unit 31 is a target amplification factor that can detect dust larger than sand grains having a diameter of about 200 μm. The target amplification degree is such that each of the 200 μm-sized garbage can be detected.

  In the present embodiment, the dust detection of the first dust detection means 35 and the second dust detection means 36 is common to the detection unit 22. Therefore, the first amplifying means 30, the first pulse converting means 32, the second amplifying means 31, and the second pulse converting means 33 constitute a fractionation signal output means 34, and the first pulse converting means 32. The second pulse conversion means 33 outputs a first dust detection signal and a second dust detection signal.

  37 converts the amount of dust passing through the intake flow path into a level according to the first dust detection signal, that is, the number of pulses from the first pulse conversion means 32, and a predetermined holding time t1a to t1a ~. First holding means for adding a t1d and outputting a first holding signal, 38 passes through the intake flow path by the number of pulses from the second dust detection signal, that is, the second pulse converting means 33. This is a second holding unit that converts the amount of dust that is present into a level, adds a predetermined holding time t2a to t2d according to the level, and outputs a second holding signal.

  Reference numeral 40 denotes display control means for controlling the display pattern of the display means 11 constituted by LEDs. The display means 11 and the display control means 40 constitute notification means.

  Reference numeral 13 denotes a bidirectional thyristor for driving the electric blower 2, the power supplied to the electric blower 2 is controlled by a trigger signal output from the control means 14, and the control means 14 is supplied power set by the operation unit 4. To control the operation of the electric blower 2. The control means 14, the first holding means 37, the second holding means 38, and the display control means 40 are constituted by a microcomputer 41.

  The electric blower 2, the bidirectional thyristor 13, and the microcomputer 41 are disposed in the main body 1, and the light emitting unit 20, the light receiving unit 21 (detecting unit 22), the first amplifying unit 30, the second amplifying unit 31, The first pulse conversion means 32 and the second pulse conversion means 33 are disposed in the hose 3 together with the operation unit 4 and the notification unit 11, and are provided particularly in the connection unit 12.

  Operation | movement is demonstrated about the alerting | reporting apparatus comprised as mentioned above and a vacuum cleaner provided with the same.

  When dust flows into the intake flow path during cleaning, light from the light emitting unit 20 is blocked by the dust, and the amount of light received by the light receiving unit 21 is reduced and the output voltage Vs is reduced. The first amplifying means 30 amplifies this Vs with a filter function, and the filter function is composed of a bandpass filter comprising a high-pass filter having a cutoff frequency fa1 and a low-pass filter having a cutoff frequency fa2. The frequency fa1 and fa2 are amplified based on a specific frequency band A (fa1 to fa2). The frequencies fa1 and fa2 are frequencies calculated based on the speed at which dust passes through the detection unit 22.

  Similarly, the second amplifying unit 31 also has a filter function, and is configured to amplify Vs around a specific frequency band B (fb1 to fb2).

  fa1 and fa2 can mainly detect pollen of about 20 μm, and fb1 to fb2 can detect dust of 200 μm or more.

  Here, a change in Vs when dust passes through the detection unit 22 will be described. When the surface shape of the light receiving portion 21 is a circle, when the dust passes through a cylinder (hereinafter referred to as region R) having the upper and lower light emitting portions 20 and 21 facing each other, the light receiving portion. FIG. 2 shows the passage of dust at that time, and FIG. 3 shows the change in the amount of light received by the light receiving unit 21. 2 and 3, when the dust passes through the detection unit 22, (a) before the dust passes, (b) when the dust crosses the outer wall of the region R (when entering the region R), (c) There are five states when the dust enters the region R (d) when the dust crosses the outer wall of the region R (when it exits the region R) (e) when the dust has passed. The change in the amount of light received by the light receiving unit 21 at this time depends on the size of the dust and the speed at which the light passes through the detecting unit 22, and the larger the amount of dust, the larger the amount of change and the longer the change time. The change time becomes shorter. The first amplifying unit 30 and the second amplifying unit 31 use the change in the amount of received light at the time of (a) to filter and amplify the change in the amount of received light.

  Assuming that the diameters of the light emitting unit 20 and the light receiving unit 21 are Y, and the dust to be detected is a sphere having a diameter X, the time T in the state (A) is as follows: When dust is small and X ≦ Y, T = X / Z, and when dust is large and X ≧ Y, T = Y / Z.

  Assuming that the diameter Y of the light receiving unit 21 is 3 mm, in the case of the second amplifying unit 31, in consideration of detecting dust larger than sand grains having a diameter of about 200 μm, the target size of the detected dust is X ≧ 200 μm. Therefore, T becomes 200 μm / Z ≦ T ≦ 3 mm / Z. If the range of the passing speed Z is set, T and frequencies fb1 and fb2 corresponding to the T are determined.

  Similarly, the frequencies fa1 and fa2 in the first amplifying means 30 can be set so that pollen and the like having a particle diameter of about 20 μm can be detected.

  Therefore, the first pulse converting means 32 receives the detection signal corresponding to 20 μm amplified by the first amplifying means 30, compares it with the first reference signal, converts it into a pulse signal, and outputs it. The first dust detection signal is a signal having information only on dust corresponding to 20 μm such as pollen (hereinafter referred to as fine dust). Similarly, the second pulse conversion means 33 also receives a detection signal of particles of 200 μm or more such as sand dust amplified by the second amplification means 31 and compares it with the second reference signal to generate a pulse signal. Therefore, the second dust detection signal is a signal having information only on dust such as sand (hereinafter referred to as sand dust) of 200 μm or more.

  Table 1 shows an example of the relationship between the number of pulses of the first dust detection signal and the second dust detection signal and the dirt level. Usually, the number of fine dust and the number of sand dust is larger than the number of fine dust. For example, even when the floor insert 8 reciprocates once on the floor surface, the number of dust passing through the detection unit 22 is More fine dust. Therefore, as the judgment value of the dirt level, even if the dirt level is the same, the number of pulses for fine dust is increased, and in actual cleaning, there is a big difference between the notice of dirt due to sand dust and dirt due to fine dust, and the user feels uncomfortable. You can set it so that you don't have to remember.

  However, normally, when the floor suction tool 8 comes into contact with an object to be cleaned such as a floor and sucks dust, the time from the start of passage through the detection unit 22 to the end of fine dust and sand is Since many fine dusts are longer, even if the dirt levels of fine dust and sand dust are adjusted, the time during which the second dust detection signal maintains the dirt level and the first dust detection signal are the same dirt. The second dust detection signal is shorter than the time for maintaining the level.

  As for the first dust detection signal, when the amount of fine dust is very small, the time from when the fine dust starts to pass through the detection unit 22 to when it ends is also short.

  In this way, displaying the presence of dust so as to synchronize with the shortened time, there is a possibility not only miss the detection of minute fine dust and sand dust, but also the level of dirt For example, if it changes frequently with a period of 0.1 second, the information that the display is trying to convey cannot be accurately recognized.

  The first holding means 37 determines the relationship between the number of pulses shown in Table 1 and the dirt level based on the number of pulses (first dust detection signal) per 0.1 second from the first pulse conversion means 32. Judgment criteria are provided, and according to this, judgment is made in five stages from dirt level 0 to dirt level 4, and further from level 4 to 3, from level 3 to 2, from level 2 to 1, from level 1 to 0 As shown in Table 2, each individual change time is operated to add an individual holding time. Similarly, the second holding means 38 uses the number of pulses per second (second dust detection signal) from the second pulse conversion means 33 to determine the amount of dust according to the judgment criteria shown in Table 1. Judgment is made in 5 stages from level 0 to dirt level 4, and further changes from level 4 to 3, from level 3 to 2, from level 2 to 1, and from level 1 to 0 are shown in Table 2. As shown, each operates to add an individual holding time.

  In Table 2, for example, when a pulse signal as shown in FIG. 4 is input as the first dust detection signal, the first holding means 37 sets the level of dirt at the time when 0.1 second is completed. It is determined that the contamination level is 4, and thereafter, the first holding signal holding the state of the contamination level 4 for 0.5 seconds is output even if no pulse is input. When 0.5 seconds elapses, the dirt level is lowered from the dirt level 4 to the dirt level 3, and after 0.5 seconds, the dirt level is maintained until the dirt level becomes 0. Repeat the time switching.

  The first holding means 37 holds the holding times shown in Table 2 in the direction in which the dirt decreases, but in the direction in which the dirt increases, there is no holding time (0 second) and the dirt level. To follow.

  As shown in FIG. 5, when no pulse is generated and the holding operation is performed at the dirt level 1, if there is a pulse input of 24 pulses, the dirt level is immediately set to the dirt level 2 according to Table 1, Thereafter, if there is no occurrence of a pulse, after holding for 1 second, which is the holding time of the dirt level 2, the level is lowered to the dirt level 1, and after holding for 1.5 seconds, the dirt level is reached to zero. For example, even if there is an input of 10 pulses (corresponding to dirt level 1) during the level 3 holding operation, if the level is lower than the level during the holding operation, it is ignored and the holding operation continues. Is done.

  As described above, if no pulse is generated at intervals of 0.1 seconds or if the operation shifts to the holding operation, the number of generated pulses is equal to or lower than the holding level. The holding operation is repeated until the dirt level becomes 0, and if the number of pulses corresponding to a high dirt level is generated, the dirt level is instantaneously followed and the first holding signal is output.

  Similarly to the first holding means 37, the second holding means 38 is also based on the dirt level with respect to the number of dirt level judgment pulses shown in Table 1 and the holding time for each dirt level shown in Table 2. A hold signal is output.

  FIG. 6 shows the configuration of the display means 11. In FIG. 6, a dust level 1 display 51, a dust level 2 display 52, a dust level 3 display 53, and a dust level 4 display 54 for displaying dirt due to dust corresponding to the second holding signal output from the second holding means 38. And a fine dust level 1 display 55, a fine dust level 2 display 56, a fine dust level 3 display 57, and a fine dust level 4 for displaying dirt due to fine dust corresponding to the first holding signal output from the first holding means 37. A display 58 is used. Each level corresponds to a dirt level. For example, if the first holding signal is the dirt level 3, the display control means 40 lights the fine dust level 1 display 55 to the fine dust level 3 display 57, The display means 11 is controlled so as to turn on only those corresponding to levels below the dirt level of the first holding signal, such as turning off the fine dust level 4 display 58. When the dirt level is 0, the light is turned off, and the same control is performed for the dust level 1 display 51 to the dust level 4 display 54 for the second holding signal.

  As described above, the retention time is added to the first dust detection signal and the second dust detection signal, and the dirt level is displayed according to the type of dust, thereby stably displaying the dirt level. In addition, a time delay for the user to accurately recognize the information displayed can be added, and the visibility can be improved.

  In Table 2, the holding time is different between the first holding signal and the second holding signal with respect to the same dirt level, but the display switching interval is fine dust level 1 display 55 to fine dust level. By setting the 4 display 58 to be different from the dust level 1 display 51 to the dust level 4 display 54, the user can recognize which display is only by switching the display. On the contrary, if the display switching interval is different between sand dust and fine dust, if it feels uncomfortable, the respective dirt levels output by the first holding signal and the second holding signal when the dust passes through the detection unit 22. The same switching interval can be realized by adjusting the holding time for each dirt level shown in Table 2 so that the time during which the signal is maintained is the same.

  In Table 2, the higher the dirt level, the shorter the holding time. However, since the control is performed so that the dirt becomes zero in stages, the total holding time becomes longer as the degree of dirt increases. As a result, the higher the degree of contamination, the longer the holding time. As a result, if the user of the vacuum cleaner performs the cleaning until the dirt level becomes 0, the dust can be removed by the work of the required time according to the amount and the size of the dust regardless of the size and type of the dust. This can improve the efficiency of the cleaning work.

(Embodiment 2)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. In addition, about the components of the same structure as the past, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  FIG. 7 is a block diagram of control of the notification device for the electric vacuum cleaner according to Embodiment 2 of the present invention. The difference from the first embodiment is that the first holding signal output from the first holding means 37 and the second holding means 38 is compared with the second holding signal, and one unified holding signal is output comparing means. 50.

  Moreover, although the structure of the display means 11 in Embodiment 2 of this invention is shown in FIG. 9, it displays by the one LED display 61 which integrated sand dust and fine dust.

  FIG. 8 shows an example of the relationship between the first holding signal output from the first holding means 37, the second holding signal output from the second holding means 38, and the output signal from the comparison means 50.

  When dust passes through the detection unit 22, the first holding signal and the second holding signal are the same signals as in the first embodiment. The comparing means 50 receives the first holding signal and the second holding signal, determines which one has the higher dirt level, and outputs the higher level as the unified level. In FIG. 8, the first holding signal is output in the first half and the second holding signal is output in the second half of the output signal of the comparison means.

  The notification control means 40 controls the LED display 61 to be turned on when the unified level is level 1 to level 4 and to be turned off when it is level 0, according to the output signal of the comparison means 50.

  With this configuration, it is not necessary to separate the display from sand dust and fine dust, the display means 11 can be realized with a simple configuration, and the visibility that dust has been removed by the user's cleaning operation can be improved. .

  In the present embodiment, the display means 11 is configured by only the LED display 61. However, even if the number of LEDs corresponding to the unified level is arranged and the level display is performed, the configuration can be easily realized. Needless to say.

(Embodiment 3)
Hereinafter, a third embodiment of the present invention will be described with reference to FIG. In addition, about the components of the same structure as the past, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  FIG. 10 is a block diagram of control of the notification device for the electric vacuum cleaner according to Embodiment 3 of the present invention. The difference from the first embodiment is that the first dust detection signal and the second dust detection signal are input, and the two signals correspond to the first holding signal and the second dust detection signal corresponding to the first dust detection signal. The third holding means 70 for outputting the second holding signal is provided.

  The third holding means 70 determines the respective dirt levels in five levels of dirt levels 0 to 4 based on the number of pulses based on the first dust detection signal and the number of pulses based on the second dust detection signal. Thus, the determination is made in five cases from pattern 1 to pattern 5 based on the combination of the dirt level based on the first dust detection signal and the dirt level based on the second dust detection signal. The pattern 1 is a pattern having a relatively high dirt dust stain ratio, the pattern 5 is a pattern having a high sand dust stain ratio, and patterns 2 to 4 have a ratio between the pattern 1 and the pattern 5. The pattern is changed gradually.

  For example, if the object to be cleaned is a carpet, sand dust is heavier than fine dust and has the property of sinking into the back of the carpet eye, and it is necessary to perform cleaning more carefully than fine dust.

  Table 4 shows an example of setting the holding time from pattern 1 to pattern 2. However, the holding time of the second holding signal is set to be longer as the pattern 5 is approached, that is, as the ratio of dust increases. Thus, the dust can be held according to the structure of the dust, and the user normally performs the cleaning operation until the display on the display unit 11 is turned off. Therefore, the optimum cleaning is performed according to the structure of the dust without being conscious. Dust can be removed in time.

  In the first to third embodiments, the first dust detection means and the second dust detection means, or the first dust detection signal and the second dust detection signal are used to judge and notify the dust situation. Although it is configured to do so, it can be divided into two types so that it can be understood from the purpose of providing appropriate notifications according to the user's feeling while ensuring easy recognition for various sizes and types of dust. The present invention is not limited, and the number of dust detection means or dust detection signals may be increased in accordance with the type and particle diameter of dust to be notified, and the accuracy of the dust state determination may be improved.

  As described above, the notification device according to the present invention can recognize the state of invisible dust, the amount of dust, and the like with fine notification dust, such as pollen, in a form that is actually felt, Appropriate cleaning according to the environment and conditions can be efficiently performed, and the present invention can also be applied to applications such as equipment that filters airflow containing dust with a filter or the like.

The block diagram of control of the notification apparatus of the vacuum cleaner in Embodiment 1 of this invention Dust passage explanatory drawing in the light receiving part of the notification device of the vacuum cleaner Same as above, explanatory diagram of change in received light amount of notification device of vacuum cleaner Same as above, holding time explanatory diagram of the vacuum cleaner alarm device The other holding time explanatory view of the notification device of the vacuum cleaner Same as above, the display means configuration diagram of the notification device of the vacuum cleaner The block diagram of control of the notification apparatus of the vacuum cleaner in Embodiment 2 of this invention Same as above, the relationship between the holding time of the vacuum cleaner alarm and the output of the comparison means Same as above, the display means configuration diagram of the notification device of the vacuum cleaner The block diagram of control of the notification apparatus of the vacuum cleaner in Embodiment 3 of this invention Schematic configuration diagram of a conventional electric discharger Block diagram of dust detection of a conventional vacuum cleaner Sectional drawing of the detection part of the dust detection means of the conventional vacuum cleaner

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 Light emission part 21 Light reception part 30 1st amplification means 31 2nd amplification means 32 1st pulse conversion means 33 2nd pulse conversion means 34 Classification signal output means 35 1st dust detection means 36 2nd dust detection Means 37 First holding means 38 Second holding means 40 Display control means 41 Microcomputer 50 Comparison means 70 Third holding means

Claims (10)

First dust detection means for detecting dust of a predetermined size passing through the intake flow path; second dust detection means for detecting larger dust different from the predetermined size passing through the intake flow path; First holding means for holding dust information based on the first dust detection signal detected by the first dust detection means for a predetermined time, and dust information based on the second dust detection signal detected by the second dust detection means. Second holding means for holding for a predetermined time, and based on the first holding signal held by the first holding means and the second holding signal held by the second holding means, the presence or absence of dust or An informing device having an informing means for informing a state. A detection unit that detects dust passing through the intake flow path, a first dust detection signal that reacts to dust of a predetermined size from a detection result of the detection unit, and a larger dust that is different from the predetermined size Dust detection means having a classification signal output means for outputting a reacting second dust detection signal, first holding means for holding dust information based on the first dust detection signal for a predetermined time, and the second dust detection signal Based on a first holding signal held by the first holding means and a second holding signal held by the second holding means, An informing device having informing means for informing the presence or absence or state of dust. The notification device according to claim 1 or 2, wherein the predetermined holding time set by the first holding means and the second holding means has different values. The notification device according to any one of claims 1 to 3, wherein the first holding means shortens the first holding time when the first dust detection signal changes in a direction in which dust increases. The notification device according to any one of claims 1 to 3, wherein the second holding means shortens the second holding time when the second dust detection signal changes in a direction in which dust increases. Comparing means for comparing the first holding signal and the second holding signal and outputting either one of the holding signals is provided, and the notification means performs notification based on the holding signal output from the comparison means. The notification device according to any one of the above. The notification device according to claim 6, wherein the comparison means outputs a holding signal with more dirt. The third holding means for determining the first holding time and the second holding time according to the ratio of dust in the first dust detection signal and the second dust detection signal. Informing device. 9. The holding time of the first holding means or the second holding means or the third holding means varies according to the amount of dust in the first dust detection signal or the second dust detection signal. The notification device according to item. The vacuum cleaner provided with the alerting | reporting apparatus of any one of Claims 1-9.

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