JP4315146B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to control of a general household or business-use vacuum cleaner.

  FIG. 8 shows a schematic configuration diagram of a conventional vacuum cleaner.

  In FIG. 8, 1 is the main body of the vacuum cleaner, 2 is the electric blower built in the main body 1 and generates suction force, and 3 is the 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. 9 and 10, 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 opposed 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 correcting the particle size of the dust by the degree of the pulse Sa and the width of the pulse Sa, and for the detected dirt, What performs control which hold | maintains the electric power supplied to the electric blower 2 of control object for a fixed period is disclosed (for example, refer patent document 1).
Japanese Patent No. 2000648

  In recent years, due to changes in the living environment, interest in house dust containing invisible pollen and the like has increased, and a vacuum cleaner capable of detecting and removing such fine dust has been demanded.

  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, the conventional configuration reacts to fine dust such as pollen and responds to the number of pulses, for example, the power supplied to the electric blower is low, because if the number of pulses is small, the amount of dust is small, so the input is low and the number of pulses is large. If there is a lot of dust and you try to set it to a high input, in a place where there is a lot of dust of relatively large particles, there will be more wide pulses and fewer pulses, so there will be less dust, In other words, it operates with low input, and conversely, it reacts to dust of a certain size or larger, such as sand dust, and if the number of pulses is small, the amount of dust is small, so the input is low, and if the number of pulses is large, the input is high. If the setting is made so that it does not react even in a place where there is a lot of fine dust, it will be an operation with low input such that there is no dust.

  In addition, when the particle diameter of the dust sucked at substantially the same speed as the flow velocity of the intake air is X, the size of the light receiving unit is the diameter Y, and the passing speed Z, the passing time is (X + Y) / Z. When the particle size becomes very small dust and X << Y, the transit time is almost Y / Z, and the influence on the difference in transit time due to the size of the dust is eliminated. The size of the dust can be determined only for dust having a particle diameter of a certain size or more and having a large difference from the pulse width determined by the number of pulses. In the method described in No. 1, it is difficult to discriminate relatively small dust particles by the pulse width and to correct the number of pulses.

  As described above, characteristics have been matched to dust of a certain size so far, and optimal supply power control of an electric blower has not been realized for dust of various particle sizes including fine dust. Had problems.

In order to solve the above-described conventional problems, an electric vacuum cleaner according to the present invention includes an electric blower that generates intake air, a first dust detection unit that detects dust of a predetermined size passing through an intake passage, and an intake air Second dust detection means for detecting larger dust that differs from the predetermined size passing through the flow path;
Based on the dust information by the first dust detection signal detected by the first dust detection means, it is determined which of the predetermined dirt levels the dirt level belongs to, and the determined dirt The first holding means for outputting the first holding signal corresponding to the level, and several dirt levels whose dirt levels are determined in advance based on dust information based on the second dust detection signal detected by the second dust detecting means. Based on the first holding signal and the second holding signal, the second holding means for determining which predetermined level of dirt belongs to and outputting a second holding signal corresponding to the determined dirt level. Hazuki have a control means for controlling the power supplied to the electric blower, said first holding means has a first holding time set for each dirt level, lower contamination than dirt level the previously determined Level is In the case of disconnection, the first holding signal corresponding to the previously determined predetermined dirt level is output for the first holding time, and when the first holding time elapses, the level is changed to the next lower dirt level. The second holding means has a second holding time set for each dirt level, and when a dirt level lower than the previously determined dirt level is determined, the predetermined dirt determined last time is controlled. The second holding signal corresponding to the level is output for the second holding time, and when the second holding time elapses, the same control is performed by switching to the next lower dirt level .

  Accordingly, different sizes of dust can be detected for each size of the dust, and the control means can detect the first holding signal corresponding to the first holding signal set in advance from the first holding signal and the second holding signal. By determining the actual supply power to be actually supplied to the electric blower from the supply power setting of the second and the second supply power setting corresponding to the second holding signal, various control can be performed by controlling the power supply to the electric blower. For the size of dust, the electric power supply to the electric blower can be optimally supplied, the optimum suction force can be obtained regardless of the size of the dust, and the dust can be sucked and removed efficiently, contributing to energy saving. A vacuum cleaner with a high degree can be provided.

  The electric vacuum cleaner of the present invention always secures an optimum suction force for a wide variety of dusts from dust having a large particle diameter such as sand dust to invisible fine dust such as pollen. It is possible to improve the accuracy and efficiency of power supply control.

1st invention differs from the said predetermined | prescribed magnitude | size which passes the intake air flow path, the 1st dust detection means which detects the dust of the predetermined magnitude | size which passes an intake flow path, and an intake flow path The second dust detection means for detecting larger dust, and the level of dirt based on dust information based on dust information detected by the first dust detection signal detected by the first dust detection means. Dust information based on a first holding unit that determines whether the dust level belongs to a predetermined level and outputs a first holding signal corresponding to the determined level, and a second dust detection signal detected by the second dust detection unit A second holding means for judging which of the predetermined dirt levels the dirt level belongs to based on the predetermined dirt level and outputting a second holding signal corresponding to the judged dirt level ; The first protection Have a control means for controlling the power supplied to the signal and the second holding signal and group Hazuki said electric blower, said first holding means has a first holding time set for each stain level If a dirt level lower than the previously determined dirt level is determined, the first holding signal corresponding to the previously determined predetermined dirt level is output for the first holding time, and the first holding time has elapsed. Then, the same control is performed by switching to the next lower dirt level, and the second holding means has a second holding time set for each dirt level and has a dirt level lower than the previously determined dirt level. Is determined, the second holding signal corresponding to the previously determined predetermined dirt level is output for the second holding time, and when the second holding time has elapsed, the level is switched to the next lower dirt level. configured to perform the control of As a result, the control means determines the optimum power supply to the electric blower based on the first holding signal and the second holding signal, and controls the electric blower, so for various sizes of dust, The electric power can be optimally supplied to the electric blower, the optimum suction force can be obtained regardless of the size of the dust, and the dust can be efficiently sucked and removed.

  The second invention includes, in addition to the first invention, a detection unit that detects dust passing through the intake passage, and the first dust detection unit and the second dust detection unit are light emitting units of the detection unit. The first dust detecting means amplifies the signal with the first amplifying means around the specific frequency band A, and receives the amount of received light when dust passes between the first and second light receiving sections as a signal. The first dust detection signal is output from the pulse conversion means, and the second dust detection means amplifies the signal by the second amplification means around the specific frequency band B, and the second pulse conversion means Output as a second dust detection signal, and by setting the specific frequency band A and the specific frequency band B to different values, the size of the dust that can be reacted by the first dust detection means, The size of the dust that the dust detection means can react to is different. Since was formed, to configure the detector in one and the constitution can be simplified.

  According to a third aspect of the invention, in particular, the control means of the first or second aspect of the invention is based on a signal for increasing the power supplied to the electric blower from among the first holding signal and the second holding signal. Since the electric power supplied to the electric blower is controlled, not only the size and type of dust, but also the combination with respect to the amount of dust, a wide range of optimum electric power, and the optimum operating time Thus, dust on the object to be cleaned can be removed.

In the fourth invention, in particular, the holding time set by the second holding means of any one of the first to third inventions is made longer than the holding time set by the first holding means. Therefore, for fine dust that has a small particle size and can be removed by suction for a short time, reduce power consumption and remove only dust that has a relatively large particle size and requires suction force over time. Can be operated more optimally.

A fifth invention is, in particular, the first to third control means in any one invention of the first dust detection signal, as the dirt level of the second dust detection signal is high, the first holding means, second Since the holding time set by the holding means is shortened, the total operation time with a high suction force becomes longer when the degree of contamination increases, and as a result, the higher the degree of contamination, the higher the suction force. The dust removal power can be secured. As a result, the user of the vacuum cleaner can perform cleaning with the optimum power supply and suction time for the size, type, and amount of dust, improving the usability and improving the efficiency of the cleaning work. be able to.

In the sixth aspect of the invention, particularly in the direction in which the dirt level of the first dust detection signal and the second dust detection signal of any one of the first to third aspects of the invention increases, Since the holding time set by the holding means is set to 0 seconds, when the dirt increases and further suction force is required, the dirt level is instantaneously followed without the holding time, First and second holding signals can be output.

  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, and the amplification factor of the first amplifying unit 30 is from pollen of about 20 μm in diameter to the second amplifying unit 31. 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 outputting a first holding signal with t1d added, 38 is passing through the intake flow path by the number of pulses from the second dust detection signal, that is, the second pulse converting means 33. Second holding means that converts the amount of dust into a level, adds a predetermined holding time t2a to t2d according to the level, and outputs a second holding signal.

  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 in a mode set by the operation unit 4. The control means variably controls the power supplied to the electric blower 2 in accordance with the first holding signal output from the first holding means 37 and the second holding signal output from the second holding means 38. The supply power is varied by phase control for controlling the generation phase of the trigger signal of the bidirectional thyristor 13. The control unit 14 also controls the display pattern of the display unit 11 formed of LEDs. The control means 14, the first holding means 37 and the second holding means 38 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. For this reason, as the judgment value of the dirt level, the number of pulses of fine dust is increased even at the same dirt level, and the same dirt level is obtained if the dirt is the same at the actual cleaning site.

  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.

  As described above, when the power supplied to the electric blower 2 is switched with respect to the presence of dust so as to synchronize with the shortened time, the physical operation delay of the electric blower 2 and the delay of the follow-up of the intake air As a result, it is not possible to obtain a sufficient suction force for sucking dust, and conversely, power is supplied with an excessive suction force and not only wasteful energy is consumed. There is a possibility that the operation sound of the electric blower 2 (which greatly depends on the number of rotations) is frequently switched, resulting in noise that gives the user discomfort.

  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.

  Table 3 shows the setting of the phase value of the trigger signal for supplying power to the electric blower 2 with respect to the dirt level. The control means 14 has a phase value to be set in advance as shown in Table 2 for each of the first holding signal and the second holding signal.

  In Table 3, the phase value is set by the time from the zero cross point, which is the timing when the commercial power supply (AC) becomes 0 V, and indicates the time of 50 Hz. As the phase value decreases, the power supplied to the electric blower 2 increases, and the phase value 0 ms is a state in which the voltage of the commercial power supply itself is applied to the electric blower 2 in a fully energized state. Further, when the frequency of the commercial power source is 60 Hz and the same supply power as that at 50 Hz is desired to be applied at each dirt level, it can be realized by controlling with the phase value obtained by adding 50/60 to the phase value in Table 3.

  The control means inputs the respective dirt levels to which the holding time is added as a first holding signal and a second holding signal, and for the first dust detection signal for fine dust such as pollen and the second dust detection signal for sand dust. Thus, each phase value is determined. As can be seen from Table 3, the higher the dirt level, the higher the supply power and the suction power, so that the supply power is set to the lowest when there is no dust.

  The control means 14 once determines the phase value based on the first holding signal and the phase value based on the second holding signal, and then determines the phase value having the smaller phase value, that is, the higher power supplied to the electric blower 2. The final phase value is determined and a trigger signal is output to the bidirectional thyristor 13.

  As a result, not only the size and type of dust but also the combination with respect to the amount of dust, it is possible to remove dust on the object to be cleaned with a wide range of optimum power supply and optimum operation time. it can. Further, by increasing the holding time to some extent, frequent switching of the supplied power can be suppressed, and noise reduction can be realized.

  Also, in Table 2, by setting the holding time based on the second holding signal longer than the holding time based on the first holding signal, fine dust that has a small particle size and can be removed even with short-time suction can reduce power consumption. Only dust and the like that have a relatively large particle size and require a suction force can be securely removed over time, so that more optimal operation can be performed.

  In Table 2, the retention time is shortened as the dirt level becomes higher, but the control is performed so that the dirt becomes zero in stages, and when the dirt level increases, the total operation time with a high suction force is achieved. As a result, the higher the degree of contamination, the higher the suction force and the dust removal power can be secured. As a result, the user of the vacuum cleaner can perform cleaning with the optimum power supply and suction time for the size, type, and amount of dust, improving the usability and improving the efficiency of the cleaning work. be able to.

  Further, in Table 3, by setting the phase value determined by the second holding signal to be smaller than the phase value determined by the first holding signal, only the dust or the like having a relatively large particle diameter and requiring suction force can be obtained even at the same dirt level. This is because the suction force is increased so that dust can be reliably removed.

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 the dirt level. If the first holding signal is the dirt level 3, for example, the control means 14 turns on the fine dust level 1 display 55 to the fine dust level 3 display 57 to finely The display means 11 is controlled so that only those corresponding to levels below the dirt level of the first holding signal are turned on, such as turning off the 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. At this time, the control means 14 controls to switch the power supplied to the electric blower 2 in synchronization with the display with the higher dirt level, so that the user performs cleaning while checking the removal status of dust. Therefore, it is possible to improve the efficiency of the cleaning work, and at the same time, it is possible to perform cleaning while grasping the power supply status to the electric blower 2 in operation, but generally, the electric power consumed by the vacuum cleaner Since most of the electric power is consumed by the electric blower 2, cleaning can be performed while grasping the power consumption of the device.

  In the present embodiment, the control unit 14 determines the trigger signal output to the bidirectional thyristor 13 from the phase value determined by the respective dirt levels of the first holding signal and the second holding signal. Needless to say, the respective dirt levels may be compared to output the phase value with the higher dirt level.

(Embodiment 2)
Hereinafter, a second 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. 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 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 50 for outputting the second holding signal is provided.

  The third holding means 50 determines the respective dirt levels in five stages 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 5 is an example of setting the holding time from pattern 1 to pattern 2, but 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.

  As a result, the power is supplied to the electric blower 2 according to the configuration of the dust, that is, the suction power is operated only for the time required to remove the dust according to the configuration of the dust, thereby realizing more optimal and efficient operation. it can.

  In the first to second 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 determine and notify the dust situation. Although it is configured, it is limited to two types so that it can be understood from the purpose of providing appropriate notifications according to the user's feeling while ensuring ease of recognition for dust of various sizes and types The number of dust detection means or the number of 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 vacuum cleaner according to the present invention detects the state of invisible dust, the amount of dust, etc., up to fine dust such as pollen, and maintains the dust removal force while maintaining the optimum precision. It can be operated with electric power supplied to a simple electric blower, can be efficiently cleaned appropriately according to its environment and conditions, and can also be used in a cleaning device that removes dust and collects dust.

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 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

DESCRIPTION OF SYMBOLS 14 Control means 20 Light emission part 21 Light-receiving 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 41 Microcomputer 50 Third holding means

Claims (6)

An electric blower that generates intake air, first dust detection means for detecting dust of a predetermined size that passes through the intake flow path, and larger dust that is different from the predetermined size that passes through the intake flow path is detected. The predetermined dirt level belongs to a predetermined dirt level among several dirt levels determined in advance based on the dust information by the second dust detecting means and the first dust detection signal detected by the first dust detecting means. to determine, the first holding means and said second dust detection means based on dust information by the second dust detection signal detected stain level for outputting the first holding signal corresponding to the dirt level is determined A second holding means for judging which of the predetermined dirt levels the predetermined dirt level belongs to, and outputting a second holding signal corresponding to the judged dirt level ; the first holding signal; the first Hazuki groups and holding signal have a control means for controlling the power supplied to the electric blower, said first holding means has a first holding time set for each stain level, dirt last determined When a dirt level lower than the level is determined, the first holding signal corresponding to the previously determined predetermined dirt level is output for the first holding time, and when the first holding time elapses, the first holding signal is lowered. The same control is performed by switching to the dirt level, and the second holding means has a second holding time set for each dirt level, and a dirt level lower than the previously judged dirt level is determined. The second holding signal corresponding to the previously determined predetermined dirt level is output for the second holding time, and when the second holding time elapses, the control is performed by switching to the next lower dirt level. Vacuum cleaner. A detection unit that detects dust passing through the intake flow path is provided, and the first dust detection unit and the second dust detection unit receive light when dust passes between the light emitting unit and the light receiving unit of the detection unit. The first dust detecting means amplifies the signal by the first amplifying means around the specific frequency band A, and outputs it as a first dust detection signal from the first pulse converting means. The second dust detecting means amplifies the signal by the second amplifying means around the specific frequency band B, and outputs the amplified signal as a second dust detection signal from the second pulse converting means. By setting the band A and the specific frequency band B to different values, the size of the dust that can be reacted by the first dust detection unit is different from the size of the dust that can be reacted by the second dust detection unit. The vacuum cleaner according to claim 1. The control means controls the power supplied to the electric blower based on a signal for increasing the power supplied to the electric blower from among the first hold signal and the second hold signal. Electric vacuum cleaner. The electric vacuum cleaner according to any one of claims 1 to 3 , wherein the holding time set by the second holding means is longer than the holding time set by the first holding means. Control means, first dust detection signal, as the dirt level of the second dust detection signal is high, the first holding means, claim 1-3 to shorten the retention time set by the second holding means The vacuum cleaner according to item 1. The holding time set by the first holding means and the second holding means is set to 0 second with respect to the direction in which the dirt level of the first dust detection signal and the second dust detection signal increases. The electric vacuum cleaner according to any one of 3 .

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