JP2601861B2 - Electric vacuum cleaner - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a vacuum cleaner that automatically controls the output of an electric blower according to the pressure or flow rate in the air passage of the vacuum cleaner body.

(Prior Art) Conventionally, in this type of vacuum cleaner, a detection terminal for confirming operation is not provided in a control circuit.

For this reason, in order to confirm the output level according to the setting conditions, for example, when power control is performed by phase control, the output waveform is checked with an oscilloscope or the like, and the phase control angle is checked. .

(Problems to be Solved by the Invention) However, since various correction values are added to the final output, it is not possible to know exactly what kind of control is being performed.

Further, since an integrated circuit is used in the control circuit, there is a problem that the operating state and the signal processing state in the integrated circuit cannot be known from outside.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a vacuum cleaner capable of externally knowing a processing state in a control unit and a signal processing state.

(Means for Solving the Problems) An electric vacuum cleaner according to claim 1, comprising an electric blower, a detecting means for detecting a suction ability of the electric blower, and a control means for controlling an output of the electric blower. And a hose section detachably connected to the main body of the vacuum cleaner, wherein the detecting means includes a wind path detecting means for detecting a pressure or a flow rate in the air path of the main body of the vacuum cleaner, A conversion unit that converts an output of the road detection unit into an electrical output, wherein the hose unit includes a hand control unit that controls the electric blower, and the hand control unit and the control unit of the vacuum cleaner main body. A hose main body including a transmission line to be electrically connected, wherein the control means includes a current detection means for detecting an output from the hand control means, and a setting for the current detection means and an output of the detection means. Storage means for converting and storing the output of the stage corresponding to the suction force to be stored,
An arithmetic processing means for arithmetically processing the output from the storage means to the set suction capacity; an output means for outputting an output for controlling the electric blower according to the output of the arithmetic processing means; A test mode output means for outputting an output of the wind path detection means, an output of the current detection means, and an output of a state with respect to the suction force of the storage means; and a test mode stage output by the test mode output means or an output from the test mode output means. A switching unit for switching to a normal stage, wherein the test mode output unit is configured to output the output of the air passage detection unit, the output of the current detection unit, and the output corresponding to the suction force of the storage unit during the test mode stage. At least one of them is selected and output.

According to a second aspect of the present invention, in the vacuum cleaner of the first aspect, the test mode output means corresponds to an output of the air path detection means, an output of the current detection means, and a suction force of the storage means at the time of the test mode. In this case, all of the outputs in the state in which they are performed are output simultaneously.

According to a third aspect of the present invention, in the vacuum cleaner according to the first or second aspect, the test mode output unit includes an output of the air path detection unit, an output of the current detection unit, and a suction force of the storage unit during the test mode. Is switched and output at regular intervals.

(Operation) In the electric vacuum cleaner according to the first aspect, the electric fan is set to the normal stage by the switching unit, and the electric blower is controlled by the hand control unit. The output set by the hand control means is detected by the current detection means, and the pressure or flow rate in the air path of the vacuum cleaner body is detected by the air path detection means of the detection means, and the output of the air path detection means is detected. The conversion means converts the output into an electrical output and outputs the output. The storage means converts the output into a stage corresponding to the suction force set with respect to the output of the current detection means and the detection means and stores the output. The output from the CPU is processed according to the set suction capacity, and the output means outputs an output for controlling the electric blower according to the output of the arithmetic processing means, thereby controlling the electric blower. When the test mode is set, the test mode is performed by the switching unit, and the output unit outputs the output of the air passage detection unit, the output of the current control unit, and the output corresponding to the suction force of the storage unit to an external reading device. At least one of them is selected and output.

According to a second aspect of the present invention, in the electric vacuum cleaner according to the first aspect, the test mode output unit outputs the output corresponding to the output of the air path detection unit, the output of the current detection unit, and the suction force of the storage unit. Output all at the same time.

According to a third aspect of the present invention, in the vacuum cleaner of the first or second aspect, the test mode output means corresponds to an output of the air path detection means, an output of the current detection means, and a suction force of the storage means. Is changed and output at regular intervals.

(Embodiment) Hereinafter, an embodiment of the vacuum cleaner of the present invention will be described with reference to the drawings.

In FIG. 8, reference numeral 101 denotes a vacuum cleaner main body. The vacuum cleaner main body 101 has a front handle 102 at a front portion, and a cover body 103 is rotatably mounted on a rear upper portion thereof. A component storage section 104 is provided inside the cover body 103, and a vine port 105 and a round brush 106 are stored therein. Also, on the front side of the component storage section 104, an indicator 110 indicating the suction capacity of the electric blower 107 provided in the vacuum cleaner main body 101 is provided, and behind the indicator 110, a display is provided. Light emitting diodes 111, 112, 113, and 114 are provided to form a level meter 115. Further, the vacuum cleaner main body 101 is provided with a bumper 116 located on the peripheral surface.

A pair of wheels 117 and a turning wheel are provided at the lower part of the vacuum cleaner main body 101 at the rear side of both side surfaces and at the front side of the lower surface, respectively, and a handle 118 is turned at the upper part. It is provided so that it can be stored freely. In addition, the vacuum cleaner body
A power cord 119 is provided at the lower rear end of the 101, and the power cord 119 is wound and stored by pressing a cord reel button 120 provided at the upper rear end.

On the upper surface of the vacuum cleaner main body 101, a main body connection part 122 of a hose part 121 is rotatably and detachably attached. Hose body 1 connected to this body connection part 122
A grip tube 125 is provided at the distal end of the extension tube 23 to which an extendable extension tube 124 is inserted and detachably inserted and connected. The grip tube 125 is provided with a hand operation unit 126. In addition, extension tube 124
A connection pipe 129 of a suction port body 128 having a built-in AC brush motor 127 as an electric motor is detachably mounted therein, and the suction port body 128 can be selectively exchanged with a vine port 105 or a round brush 106. .

Also, as shown in FIG. 9 and FIG.
A circuit board 131 of the hand control means 130 is provided in 126, and the hand operation unit 126 is a cover tube connected to the hose body 123.
The connection pipe 133 is provided between the handle 132 and the grip tube 125, and a display plate 134 is attached to the connection pipe 133. In the vicinity of the display of, for example, “strong” on the display panel 134, a strong switch for operating a normally open contact (for example, a product light tact switch) 141 having one circuit and one contact as an operation switch for changing the output of the electric blower 107. And an indicator 143 having, for example, a light-emitting diode for displaying the operation position of the operation button 142. Similarly, the operation button 145 of the normally open contact 144 for automatic operation and the display 146 near the display of "weak" near the display of "auto" are the operation button 148 and the display 149 of the normally open contact 147 for sofa. ,
The operation button 151 of the normally open contact 150 for disconnection is provided near the display of “OFF”. Note that a display corresponding to the operation button 151 for cutting is not provided. Also,
On the circuit board 131, an operation button 152 for turning on the motor and an operation button 153 for turning off the motor, which are motor opening / closing means of the brush motor 127, are provided near the operation button 142 for strong use and the display 143 for strong use. ing. Further, an operation button 152 for turning on the motor and an operation button 1 for turning off the motor are provided.
53 has normally open contacts 154 and 155, respectively, and a light emitting diode 156 for a motor as a motor display means is provided near the operation button 153 for turning on the motor.

Next, the circuit configuration of the vacuum cleaner main body 101 of the above embodiment will be described with reference to the block diagram of FIG.

In FIG. 1, reference numeral 161 denotes a commercial AC power supply, which is connected to a control means 162;
2 is connected to the electric blower 107 and controls the output of the electric blower 107.

The control means 162 is connected to a commercial AC power supply 161 via a primary winding 164 of a step-down transformer 163.
The secondary winding 165 is connected to rectifying means 166 for rectifying AC into a pulsating flow, and the rectifying means 166 is connected to hand-held power supply means 167 and constant voltage means 168 for converting the voltage into constant voltages having different values. Have been. For example, the hand power supply means 167 is connected to a terminal A for supplying a current to the hand control means 130. A hand control means 130 is provided between terminals A and B.
Is connected to a terminal B, and a current detecting means 171 for detecting a current from the hand control means 130 is connected to the terminal B.
Connected to two. Further, the hand-held power supply means 167 is connected to a constant current means 173 for holding a constant current value, and the constant current means 173 is connected to an air path detecting means 174 for detecting a pressure or a flow rate in the air path of the vacuum cleaner main body 101. Also, it is connected to a detecting means 176 provided with a converting means 175 for converting a detection value of the air path detecting means 174 into an electric output. The detecting means 176 is an amplifying means for amplifying the output of the detecting means 176.
It is connected to the central processing unit 172 via 177. Also,
The constant voltage unit 168 drives the central processing unit 172, so that the constant voltage unit 168 is connected to the central processing unit 172 as it is, and the initialization unit 178 returns the program of the central processing unit 172 to the initial state when the power is turned on again. It is connected to the central processing means 172.

Further, the secondary winding 165 of the transformer 163 has a commercial AC power supply 16.
Zero cross detection means 179 for detecting zero volt of 1 and discriminating the frequency of 50 Hz and 60 Hz is connected. The zero cross detection means 179 is connected to the central processing unit 172. The hand power supply means 167 is connected to a display means 181 for displaying the output of the electric blower 107 or the operation position of the hand control means 130 via a current limiting means 180, and the display means 181
Is connected to the central processing unit 172. Further, a sounding means 183 for notifying an abnormality such as clogging from the central processing unit 172 via a sounding driving means 182 is connected.

The central processing unit 172 is connected to an output control unit 186 as an output unit including a driving unit 184 and an insulating unit 185, and the output control unit 186 is connected between the commercial AC power supply 161 and the electric blower 107. It is connected to power control means 187.

Next, the configuration of the central processing unit 172 of the above embodiment will be described with reference to the circuit diagram of FIG.

The zero-cross detection means 179 is provided via the zero-cross input means 191, the initialization means 178 is provided via the initialization input means 192, and the current detection means 171 and the amplification means 177 alternately receive the inputs from the current detection means 171 and the amplification means 177. The data is connected to a data transfer unit 195 that reads and reads the respective data via an A / D conversion unit 194 that is connected to the input switching unit 193 that switches the data to digital data. The display means 181 is connected to a display opening / closing means 196 for turning on and off the display. Further, the data transport unit 195 includes a data storage unit 197 and a temporary storage unit.
198 and a storage means 199 having
Reference numeral 9 stores data converted into an output corresponding to the suction force set for the output of the current detecting means 171 and the output of the converting means 175. The data transfer means 195 is connected to an arithmetic processing means 200 for calculating the output from the input switching means 193 and the storage means 199 to the set suction capacity. Further, the display opening / closing means 196 is provided from the data transport means 195.
The display output means 201 which is connected to the display opening / closing means 196 and the sound drive means which is connected to the sound drive means 182.
The sound output means 202 for operating the 182 and the output means 203 for operating the drive means 184 are connected to the drive means 184 of the output control means 186, respectively.

1 and FIG.
As shown in the figure, a test mode means 204 for outputting the operation state of the central processing unit 172 itself, the signal processing state, and the like to the outside is provided. The test mode means 204 includes a switch means 205 for switching to a test mode stage when an external reader (not shown) is connected to the terminal X, a test mode determination means 206 for outputting an output of the switch means 205 to the read data transport means 195. Is provided,
A test mode output temporary storage unit 207 connected to the data transfer unit 195 and temporarily storing a test mode output output from the data transfer unit 195, and outputs the outputs stored in the test mode output temporary storage unit 207 to terminals a and b and test mode output means 208 for outputting to an external reading device by means of c
Is provided.

Next, the configuration of the hand control means 130 will be described with reference to FIG.

In FIG. 5, reference numeral 211 denotes a blower opening / closing means whose one end is grounded. The blower opening / closing means 211 selects an operation stage of the electric blower 107. The blower opening / closing means 211 includes cutting blower opening / closing means 212 for cut selection, automatic blower opening / closing means 213 for automatic selection, and weak blower opening / closing means 2 for weak selection.
14 and a strong blower opening / closing means 215 for strong selection. 216 is a motor opening / closing means provided at one end,
The motor opening / closing means 216 selects an operation stage of the brush motor 127. The motor opening / closing means 216 includes a cutting motor opening / closing means 217 for selecting the cutting of the brush motor 127, and a driving motor opening / closing means 218 for selecting the driving of the brush motor 127.
And The blower opening / closing means 211 and the motor opening / closing means 216 are connected to the logic processing means 219. The logic processing means 219 processes mutual interlocking and non-interlocking operations according to the set operation logic according to the operation steps set by the blower opening / closing means 211 and the operation steps set by the motor opening / closing means 216. Then, as shown in FIG. 6, the logic processing means 219
A diode 220 is connected to the blower opening / closing means 212 and a diode 221 is connected from the automatic blower opening / closing means 213 to the drive motor opening / closing means 218.

Also, the logic processing means 219
The blower signal load means 222 for generating a signal output corresponding to the blower open / close output from the blower open / close means 211, which has been subjected to the logic processing, is connected. The blower signal load means 222 includes a cutting blower signal load means 223 for setting the cutoff of the electric blower 107, an automatic blower signal load means 224 for setting the automatic operation of the electric blower 107, and the weakness of the electric blower 107. Light blower signal load means 225 for setting operation, and strong blower signal load means 226 for setting strong operation of electric blower 107
And

Further, the blower signal load means 222 includes blower amplifying means 227 for amplifying the signal output from the blower signal load means 222.
Is connected. And, this blower amplification means 227
The automatic blower signal load means connected to the automatic blower signal load means 233 and the automatic blower signal load means 224 which is connected to the automatic blower signal load means 233 and amplifies the output of the automatic blower signal load means 223. Automatic blower amplifying means 229 for amplifying the output of 224, weak blower amplifying means 230 connected to weak blower signal load means 225 and amplifying the output of weak blower signal load means 225, and strong blower signal load A strong blower amplifying means 231 connected to the means 226 and amplifying the output of the strong blower signal load means 226. Further, the blower amplifying means 227 is connected via a blower mutual reset means 232 to a blower storage means 223 for storing the output of the blower signal load means 222. This blower storage means 233 includes a cutting blower storage means 234 for storing the output of the cutting blower signal load means 223, an automatic blower storage means 235 for storing the output of the automatic blower signal load means 224, and a weak blower. The weak blower storage means 236 for storing the output of the signal load means 225, and the strong blower signal load means 2
And a hard blower storage means 237 for storing the output of the twenty-six. Then, when any one of the signals from the blower signal load means 222 is re-input to any of the blower storage means 233, the mutual reset is performed by the blower mutual reset means 232.

Further, the blower output buffer means 238, one end of which is grounded, is connected to the blower storage means 233. And
The blower output buffer means 238 is connected to the automatic blower storage means 235.
And a weak blower output buffer means 240 connected to the weak blower storage means 236, and a strong blower buffer means 241 connected to the strong blower storage means 237. When the output of the cutting fan storage unit 234 is not used, an output buffer unit corresponding to the cutting storage unit 234 may not be provided as shown in the embodiment.

Further, the blower output buffer means 238 is connected to a blower display means 242 for displaying the drive of the electric blower 107. Then, the blower control means 242 includes an automatic blower display means 243 connected to the automatic blower output buffer means 239, a weak blower display means 244 connected to the weak blower output buffer means 240, and a strong blower. Buffer means 2
41 is provided with a heavy blower display means 245 connected to 41.

Further, to the blower output buffer means 238, a current variable means 246 for outputting a current corresponding to the output of the blower storage means 233 to the current detecting means 171 of the vacuum cleaner main body 101 is connected. The current variable means 246 is connected to the automatic blower output buffer means 239 and outputs an automatic current corresponding to the output of the automatic blower storage means 239. A weak current variable means 248 connected to the means 240 and outputting a weak current corresponding to the output of the weak blower storage means 240, and corresponding to the output of the strong blower storage means 241 connected to the strong blower buffer means 241 Current varying means 249 for outputting a strong current to be applied, and the current varying means 246 is connected to the terminal A.

Also, the logic processing means 219
The motor signal loading means 251 for generating a signal output corresponding to the motor opening / closing output from the motor opening / closing means 216 which has been subjected to the logic processing is connected. The motor signal loading means 251 includes a cutting motor signal loading means 252 for setting the brush motor 127 to be turned off, and a driving motor signal loading means 253 for setting the driving of the brush motor 127.

Further, the motor signal loading means 251 includes a motor amplifying means 254 for amplifying a signal output from the motor signal loading means 251.
Is connected. The motor amplifying means 254
The cutting motor signal loading means 252 is connected to the cutting motor signal loading means 252 and amplifies the output of the cutting motor signal loading means 252, and the driving motor signal loading means 253 is connected to the driving motor signal loading means 253. And 253 a driving motor amplifying means for amplifying the output of 253. Further, the motor amplifying means 254 is connected to a motor storage means 258 via a motor mutual resetting means 257. And
The motor storage means 258 stores the cutting motor signal loading means 252.
And a drive motor storage means 260 for storing the output of the drive motor signal load means 253. It should be noted that when any one of the signals of the motor signal load means 251 is re-input to any of the motor storage means 258, the mutual reset is performed by the blower mutual reset means 257.

Further, a cutting motor output buffer means 261 having one end grounded is connected to the cutting motor storage means 259 of the motor storage means 258. Note that no motor output buffer means is connected to the drive motor storage means 260.

Further, the blower display means 242 is connected in series with a motor display means 271 for displaying the drive of the brush motor 127 and an insulation transmission means 272 for controlling the brush motor 127, and is connected to the terminal A. The insulation transmission unit 272 is connected to a brush motor control unit 273 that controls the power of the brush motor 127 according to the output of the insulation transmission unit 272. The brush motor control means 273 is connected to the control means 162 of the vacuum cleaner main body 101 via a terminal D, and is connected to one end of the brush motor 127 via a terminal F. The other end of the electric motor 127 is connected to the control means 162 of the vacuum cleaner main body 101 via the terminals E and C.

Further, a bypass unit 271 for turning off the motor display unit 271 and the insulation transmission unit 272 is connected in parallel with the motor display unit 271 and the insulation transmission unit 272.
The cutting motor output buffer means 261 is connected to 74.

Further, a constant current means 275 for supplying a constant current is connected to the side of the power supply means 167 of the insulation transmitting means 272 and the bypass means 274.

Further, a protection means 276 for protecting the hand control means 130 from a surge whose one end is grounded is connected to the terminal A, and the terminal B is grounded.

Next, a specific circuit configuration of the above embodiment will be described with reference to FIG. 4 and FIG.

First, a specific circuit configuration of the control means 162 shown in FIG. 1 will be described with reference to FIG.

The control means 16 is connected to the commercial AC power supply 161 via a fuse 281.
The triac 282 and the electric blower 107, which are bidirectional control elements of the second power control means 187, are connected in series, and the triac 282 is connected to a snubber circuit 285 for protecting the triac 282 having a resistor 283 and a capacitor 284. .
Further, terminals C and D are provided at both ends of the commercial AC power supply 161. The electric blower 107 is connected to a noise prevention circuit 289 for preventing noise, in which capacitors 286, 287, and 288 are connected to the electric blower 107 via a fuse 281 at both ends of a commercial AC power supply 161 by Δ (delta).

And, to the commercial AC power supply 161 via the fuse 281,
The primary winding 164 of the transformer 163 is connected, and this primary winding 164
, A protection fuse 291 and a varistor 292 connected in series are connected in parallel. The secondary winding 165 of the transformer 163 has diodes 295, 296,
A diode bridge 299 having 297 and 298 is connected. A DC output side of the diode bridge 299 is connected to a three-terminal regulator 30 for a constant voltage of, for example, 12 V of a hand-held power supply 167.
1 is connected. And this three-terminal regulator 3
A smoothing electrolytic capacitor 302 and capacitor 303 connected in parallel are connected between one end of 01 and the negative electrode of the diode bridge 299, and between the other end of the three-terminal regulator 301 and the negative electrode of the diode bridge 299. Is electrolytic capacitor 3
04 and the capacitor 305 are connected respectively. A three-terminal regulator 306 for a constant voltage of, for example, 5 V of the constant voltage means 168 is connected to the DC output side of the diode bridge 299. And this three-terminal regulator 306
The capacitor 307 is connected between one end of the three-terminal regulator 306 and the negative electrode of the diode bridge 299, and the smoothing electrolytic capacitor 308 and the capacitor 309 are connected between the other end of the three-terminal regulator 306 and the negative electrode of the diode bridge 299. ing.

Further, the collector of an NPN transistor 312 having a bias resistor 311 between the emitter and the base is connected to the positive output side of the diode bridge 299.
Bias resistor 313 between emitter and base at base of 12
Is connected, and the emitter of the transistor 314 is connected to the negative side of the diode bridge 299. The base of the transistor 312 and the collector of the transistor 314
The base of the transistor 314 is connected to the central processing unit 172 via the resistor 316. Furthermore, a smoothing electrolytic capacitor 317 is provided between the emitter of the transistor 312 and the emitter of the transistor 314.
And the capacitor 318 are connected in parallel. The negative electrode of the diode bridge 299 is connected to the terminal A via the varistor 321 and the capacitor 322 and the toroidal coil 323 connected in parallel to the protection means 170, and the varistor 324 and the capacitor 325 connected in parallel. It is connected to the terminal B via the toroidal coil 326.
A resistor 171 as a current detecting means is connected between the terminal B and the negative electrode of the diode bridge 299, and a resistor 327 is connected between the terminal B and the central processing unit 172.

On the other hand, three-terminal regulator 306 and diode bridge 2
An electrolytic capacitor 331 for smoothing is connected between the capacitor and the capacitor 99. The three-terminal regulator 306 is connected to an inverting input terminal of an operational amplifier 173 as a constant current unit, and a resistor 332 is connected to the non-inverting input terminal. Further, detecting means 176 is provided between the output terminal of the operational amplifier 173 and the resistor 332.
The detecting means 176 is formed by diffusing a semiconductor such as silicon, and equivalently, the resistors 333, 334, 335, 336
And a resistance bridge provided with Among these, a variable resistor 337 as an offset gain for adjusting the gain is connected between the resistor 333 and the resistor 334, and a slider of the variable resistor is connected via a resistor 338 to the operational amplifier 33 of the amplifying means 177.
9 is connected to the non-inverting input terminal, the connection point of the resistor 335 and the resistor 336 is connected to the inverting input terminal of the operational amplifier 339 via the resistor 340, and the resistor 341 is connected between the inverting input terminal and the output terminal. . Further, a resistor 343 connected from the inverting input terminal of the operational amplifier 173 to the output terminal of the operational amplifier 342 forming a voltage follower circuit is connected to the non-inverting input terminal of the operational amplifier 339. The output terminal of the operational amplifier 339 is connected to the inverting input terminal of the operational amplifier 345 via the resistor 344, and the non-inverting input terminal of the operational amplifier 345 is connected to the resistor 3
It is connected to the output terminal of an operational amplifier 342 via 46. Further, a resistor 347 and a semi-fixed resistor 348 for adjusting the amplification degree are connected between the inverting input terminal and the output terminal of the operational amplifier 345, and the output terminal is connected to the central processing unit 172 and a diode is connected via the resistor 349. It is connected to the negative electrode of bridge 299.

Further, it is connected from the three-terminal regulator 306 to the negative electrode of the diode bridge 299 via the resistor 351 of the initializing means 178, the zener diode 352 and the resistor 353. Then, the cathode of the Zener diode 352 and the resistor 353
Is connected to the base of an NPN transistor 354. The collector of the transistor 354 is connected to the three-terminal regulator 30 of the
The emitter of this transistor 354 is connected to the base of an NPN transistor 356. Further, the collector of the transistor 356 is connected to the central processing unit 172.
And the resistor 357 is connected to the positive terminal of the diode bridge 299, and the emitter of the transistor 356 is connected to the negative terminal of the diode bridge 299.

On the other hand, light-emitting diodes 362, 363 connected in anti-parallel to the zero-crossing detecting means 179 are connected to both ends of the secondary winding 165 of the transformer 163 via a resistor 361, and a phototransistor 364 is connected to the light-emitting diodes 362, 363 by a photocoupler. Is ringing. The collector of the transistor 364 is connected to the three-terminal regulator 306 of the constant voltage means 168, and the emitter of the transistor 364 is connected to the negative terminal of the diode bridge 299 via the central processing unit 172 and the resistor 365.

One end of a resistor 180 serving as current limiting means is connected to the three-terminal regulator 301, and the other end is connected to the anodes of the light emitting diodes 111, 112, 113, 114 connected in parallel to the display means 181, and these light emitting diodes 111, 112, 113, 11
The cathode of 4 is connected to the central processing unit 172.

Further, one end of the resistor 371 of the sound generation drive unit 182 is connected to the central processing unit 172, and the other end is connected to the base of a transistor 373 having a bias resistor 372 between the emitter and the base. The emitter of the transistor 373 is connected to the negative electrode of the diode bridge 299, and the collector of the transistor 373 is connected in parallel to a sound generator 183 having a resistor 375.
The buzzer 376 is connected to the three-terminal regulator 301 of the hand-held power supply means 167. The central processing unit 172
Capacitors 381 and 382 are connected in parallel between the power supply and the negative electrode of the diode bridge 299, and the connection point between the central processing unit 172 and the capacitor 381 and the central processing unit 172 and the capacitor 38
A resistor 383 and a clock oscillator 384 of the central processing unit 172 are connected in parallel between the two connection points.

Further, the resistance of the output control means 186 from the central processing unit 172 is
It is connected via 391 to a transistor 393 having a bias resistor 392 between the emitter and the base. The emitter of the transistor 393 is connected to the negative electrode of the diode bridge 299. The collector of the transistor 393 is connected to the three-terminal regulator 301 of the power supply means 167 via the light emitting diode 394 of the insulating means 185 and the resistor 395. I have. The light emitting diode 394 is a photo triac 396
The photo triac 396 is electrically insulated by a photo coupling, and the photo triac 396 is connected to the triac 282 and the electric blower 10 through the gate and the resistor 397 of the triac 282.
7 is connected to the connection point. Further, a discharge element 398 such as a surge protector for surge protection is connected in parallel to the phototriac 396, and a light emitting diode 394 is provided.
, A diode 399 for reverse voltage protection is connected in anti-parallel.

Next, a specific circuit of the hand control means 130 shown in FIG. 5 will be described with reference to FIG.

Zener diode 400 connected in parallel between terminals A and B
Also, a protection means 276 provided with an electrolytic capacitor 402 for removing low-frequency noise such as a capacitor 401 for preventing high-frequency noise and an electric blower 107 is connected.

The terminal A has a cutting blower signal load means 2 having a load resistor 404 having a noise prevention capacitor 403 in parallel.
33 and a load resistor 4 having a noise prevention capacitor 405 in parallel
06 automatic blower signal loading means 224, and a weak blower signal loading means 225 having a load resistance 408 having a noise prevention capacitor 407 in parallel, and a load resistance 410 having a noise prevention capacitor 409 in parallel, respectively. Are connected at one end. And, between the other end of the load resistor 404 of the cutting blower signal load means 223 and the terminal B, a cutting blower opening / closing means 212 having a normally open contact 150 having a parallel resistance 411 for malfunction prevention in parallel is provided. The automatic blower opening / closing means 213 provided with a normally open contact 144 having a parallel resistance 412 for preventing malfunction in parallel between the other end of the load resistance 406 of the automatic blower signal load means 224 and the terminal B is connected. A weak blower opening / closing means 214 having a normally open contact 147 having a parallel resistance 413 for preventing malfunction is connected in parallel between the other end of the load resistance 408 of the weak blower signal load means 225 and the terminal B. The other end of the load resistor 410 of the heavy blower signal load means 226 and the terminal B
The blower opening / closing means 215 provided with a normally open contact 141 having a parallel resistor 414 for preventing a malfunction in parallel is connected between them. Note that an initialization capacitor 415 is connected in parallel with the parallel resistor 411 and the normally open contact 150 of the cutting blower opening / closing means 212.

Further, the terminal A has a cutting motor signal load means 252 having a load resistor 422 having a noise preventing capacitor 421 in parallel and a driving motor having a load resistor 424 having a noise preventing capacitor 423 in parallel. One end of the signal load means 253 is connected. And a cutting motor signal loading means
Between the other end of 252 and the terminal B, there is connected a cutting motor opening / closing means 217 having a normally open contact 155 having a malfunction preventing bypass resistor 425 connected in parallel, and a driving motor signal load means. A drive motor opening / closing means 218 having a normally open contact 154 having a bypass resistor 426 for preventing malfunction is connected in parallel between the other end of the terminal 253 and the terminal B. Further, a load resistor 428 having a capacitor 427 for preventing noise and a resistor 429 for preventing malfunction are connected in series from the terminal A to the terminal B.

On the other hand, 431 and 432 are integrated circuits (ICs).
32 is a blower amplification means 227, a blower mutual reset means 23
2, blower storage means 233, blower output buffer means 238,
It has functions as a motor amplifying means 254, a motor mutual reset means 257, a motor storage means 258 and a motor output buffer means 261. The terminals of the IC 431, the terminals, the terminals and the terminals of the IC 432, and the terminals and the terminals of the IC 432 are connected to the terminal A and to the terminal B via a capacitor 433 for initialization. Furthermore, it is connected to the terminal of IC431 and the terminal of IC432, the terminal, and the terminal.

The connection point between the load resistance 404 of the cutting blower signal load means 223 and the normally open contact 150 of the cutting blower opening / closing means 212 is IC43.
1 and connected to the load resistance 406 of the automatic blower signal load means 224 and the normally open contact 144 of the automatic blower opening / closing means 213.
Is connected to the terminal of the IC 431, the load resistance 408 of the weak blower signal load means 225 and the weak blower opening / closing means 214.
Is connected to the terminal of IC431,
The connection points between the load resistance 410 of the heavy blower signal load means 226 and the normally open contact 141 of the strong blower opening / closing means 215 are connected to the terminals of the IC 431, respectively. Further, a connection point between the load resistance 422 of the cutting motor signal loading means 252 and the normally open contact 155 of the cutting motor opening / closing means 217 is connected to a terminal of the IC 432, and is connected to the load resistance 424 of the driving motor signal loading means 253. The connection point between the motor opening / closing means 218 and the normally open contact 154 is connected to the terminal of the IC 432.

Also, the terminal of IC431 and the terminal of IC432 are connected,
The terminal of IC431 is connected to the terminal of IC432, the diode 435 is connected between the terminal of IC431 and the terminal of IC432, and the diode 436 is connected between the terminal of IC431 and the terminal of IC432.

Further, the connection point of the normally open contact 150 of the cutting blower opening / closing means 212 and the load resistance 404 of the cutting blower signal loading means 223 to the normally open contact 155 of the cutting motor opening / closing means 217 and the load of the cutting motor signal loading means 252 Diode 22 with connection of resistor 422
0 is connected, the connection point of the normally open contact 144 of the automatic blower opening / closing means 213, the connection point of the load resistance 406 of the automatic blower signal load means 224, and the normally open contact 15 of the drive motor opening / closing means 218
A diode 221 is connected between the node 4 and a connection point of the load resistor 424 of the driving blower signal load means 253, and the diode 2
20 and the diode 221 constitute the logic processing means 219.

On the other hand, the terminal of the IC 431 has an automatic blower display means 243 having a light emitting diode 146 having a compensation resistor 441 in series.
The terminal is connected to a weak blower display means 244 having a light emitting diode 149 having a compensation resistor 442 in series, and the terminal is provided with a light emitting diode 143 having a compensation resistor 443 in series. The blower display means 245 is connected, and these light emitting diodes 143, 146, 149 are connected to the light emitting diode 271 as the motor display means and the light emitting diode 444 of the insulation transmitting means 272. In addition, the light emitting diode 444 of the insulation transmission means 272 has a phototriac 44
5 is photocoupled. The photo triac 445 is connected via a resistor 446 to one end and a gate of a triac 273 as motor control means.
The triac 273 is connected to the vacuum cleaner main body 101 via a terminal D and to one end of the brush electric blower 127 via a terminal F.
The other end of 27 is the main body of the vacuum cleaner through terminal F and terminal C.
Connected to 101.

A resistor 249 is connected to a terminal of the IC 432 as a current varying means for strong use, a resistor 248 is connected to a terminal of the IC 432 as a current varying means for weak use, and these resistors 249 and 248 are connected to a terminal A. In this embodiment, the automatic current variable means 247 is not specially provided, and the light emitting diode 146 and the compensation resistor 441 of the automatic blower display means 243 are used as the automatic current variable means 247.

Furthermore, a PNP transistor 453 having a bias resistor 452 between the base and the emitter of the bypass means 274 and having an emitter and a collector connected to both ends of the light emitting diodes 271 and 272 is connected to a terminal of the IC 432 via a resistor 451. I have.

Also, two so-called constant current diodes (for example, Model E-452 manufactured by Ishizuka Electronics Co., Ltd.) 4 connected in parallel to the anode of the light emitting diode 444 and the emitter of the transistor 453
A constant current means 275 having 61 and 462, and a transistor driving resistor 463 connected in parallel to the constant current means 275 are connected.

Next, the reading device 501 connected to the outside will be described with reference to FIG.

The reading device 501 is connected to the switching means 205 of the test mode means 204 shown in FIG.
A test mode setting means 502 is provided for switching between the normal stage and the test mode stage by short-circuiting 205 or the like. Further, the reading device 501 includes a first test mode output buffer means 503 connected to the terminal a for processing the output of the amplifying means 177 via the detecting means 176 from the air path detecting means 174, for example, and the first test mode output buffer means 503. A first test mode output conversion means 504 connected to the mode output buffer means 503 for converting the output of the first test mode output buffer means 503; and a first test mode output conversion means 5
04, the first test mode output conversion means 504
Test mode display means 505 for displaying the output from
Are provided. Further, the reading device 501 has a terminal b
A second test mode output buffer means 506 which is connected to the second test mode output buffer means 506 and processes the output of the current detection means 171.
The second test mode output conversion means 507 for converting the output of the test mode output buffer means 506 of the above, and the output from the second test mode output conversion means 507 connected to the second test mode output conversion means 507 Second test mode display means 508 for displaying is provided. Further, the reading device 501 is connected to the terminal c and processes the output in the state corresponding to the suction force of the storage means 199, for example.
Test mode output buffer means 509, third test mode output conversion means 510 connected to the third test mode output buffer means 509, and converting the output of the third test mode output buffer means 509; Third test mode display means 511 which is connected to the third test mode output conversion means 510 and displays the output from the third test mode output conversion means 510 is provided.

In addition, the test mode setting means 502 controls the first test mode output buffer means 50 to select an output to be displayed.
3. Second test mode output buffer means 506 and third test mode output buffer means 506
Is connected to the test mode output buffer means.

 Next, the operation of the above embodiment will be described.

When the operation in the normal stage is performed, the switching unit 205 sets the operation to the normal stage and turns on the power.
As shown in the figure, the voltage of the commercial AC power supply 161 is stepped down by the transformer 163 and rectified by the rectifier 166, then is made constant by the constant current means 168, and is initialized by the initializer 178.
Initialize the contents of 72.

Further, the voltage is made constant by the hand power supply means 167 and output to the hand control means 130 via the transmission line. Then, when the phase angle of the commercial AC power supply 161 is 0 ° or 180 °, the zero-crossing detecting means 179 detects zero voltage, and the current detecting means 171
Is output to the A / D conversion means 194 via the input switching means 193, and the output current value is averaged to temporarily store the current value.
Store it in 8. When it is determined that this current value is set to “strong”, the trigger time of the triac 282 of the power control unit 187 is set to a value corresponding to the output of “strong”, and
If the trigger time is determined to be set to, the trigger time of the triac 282 is set to a value corresponding to the output of "weak". When it is determined that the setting is “OFF”, the triac 282 is not triggered.

On the other hand, when it is determined that the setting is automatic, an average value of the output voltage from the air flow path detection means 174 is set, and this average value is compared with the data in the data storage means 197 and calculated by the arithmetic processing means 200. To process. Then, the output control means 186 outputs a trigger according to the set triac trigger time.

In addition, the hand control means 130, for example, when the output of the electric blower 107 is set to "strong", the strong operation button 142
Is pressed, the strong blower opening / closing means 215 is operated, the strong blower signal load means 226 is operated, and the strong blower amplifying means 231 is amplified, and the previous memory is reset by the blower mutual resetting means 232, and the strong blower is reset. It is stored in the storage means 237.
Then, the light emitting diode 143 of the manual operation unit 126 is turned on by the output converted to a constant current by the constant current means 275, and the level meter 115 of the vacuum cleaner main body 101 turns on all the light emitting diodes 111, 112, 113, 114, for example, and turns on "
Is shown.

Also, when the weak operation button 148 is pressed, the electric blower 107 outputs a weak output by the same operation, and the hand operation unit 126
The weak light emitting diode 149 is turned on, and the level meter 115 of the vacuum cleaner main body 101 turns on only one light emitting diode 111 indicating "weak". In addition,
In this embodiment, the automatic current varying means 247 is not particularly provided, and the current set by the constant current means 275 is detected by the current detecting means 171.
Is detected and set to automatic.

Then, when setting the output of the electric blower 107 to automatic, when the automatic operation button 145 is pressed to be automatic,
The automatic indicator 146 of the hand operation unit 126 is turned on, and the light emitting diodes 111, 112, 113, 1 of the vacuum cleaner main body 101 are turned on.
14 blinks in accordance with the output of the electric blower 107.

Further, when the brush motor 127 is turned on, when the operation button 152 of the drive motor opening / closing means 218 is opened, the drive motor signal load means 253 is operated, and the automatic blower signal load means is operated by the diode 221 of the logic processing means 219. Activate 224. When the drive motor signal load means 253 operates, the drive motor amplification means 256
Then, the fact that the brush motor 127 is to be driven is stored in the driving motor storage means 260 by the motor mutual reset means 257, and the memory contents of the cutting motor storage means 259 are reset, and the base current of the transistor 453 of the bypass means 274 is reset. And the light emitting diode 271 indicating that the brush motor 127 is driving the current bypassed by the bypass means 274 and the light emitting diode 444 of the insulation transmitting means 272.
Pour into Note that the current flowing through the light emitting diode 271 and the insulation transmitting means 272 or the bypass means 274 is made constant by the constant current means 275 and always takes a constant current value.
Then, the photocoupled phototriac 445 is turned on, the triac 273 is turned on, and the brush motor 127 is driven. In addition, when the automatic blower signal load means 224 is driven, the electric blower 1 is automatically operated.
07 drives.

Conversely, when the brush motor 127 is turned off, when the operation button 153 of the cutting motor opening / closing means 217 is closed, the cutting motor signal loading means 252 is operated. When the cutting motor signal loading means 252 operates, the signal is amplified by the cutting motor amplifying means 255, and the fact that the brush motor 127 is turned off is stored in the cutting motor storage means 259 by the motor mutual resetting means 257. The storage contents of the drive motor storage means 260 are reset, output by the motor output buffer means 261, and a base current is applied to the transistor 453 of the bypass means 274 to indicate that the brush motor 125 is being driven. Light emitting diode 44 of transmission means 272
The current flowing through 4 is bypassed to bypass means 274.
Further, the light emitting diode 444 of the insulation transmission means 272 is turned off, and the photo triac 445 is not triggered and the triac 273 is not triggered.
Is turned off, the brush motor 127 is turned off, and the light emitting diode 444 is turned off to indicate that the brush motor 127 is stopped.

When the cutting operation button 151 is pressed, the cutting blower opening / closing means 212 is operated, the cutting blower signal loading means 223 is operated, and the cutting motor signal loading means 252 is operated by the diode 220 of the logic processing means 219. To work. As a result, the electric blower 107 stops and the brush electric motor 127 also stops, and both the display means 181 indicating the drive of the electric blower 107 and the light emitting diode 271 indicating the drive of the brush electric motor 127 are turned off.

On the other hand, when setting the test mode, the test mode setting means 502 switches the switching means 205 to set the test mode. The test mode setting means 502 also sets whether to turn on all test mode display means or turn on any test mode display means. Then, the test mode output means 208 outputs all outputs, for example, the output of the air passage detecting means 174, the output of the current detecting means 171 and the output in a state corresponding to the suction force of the storage means 199. Also, each test mode output buffer means 50
The output is processed by 3,506,509 and the test mode output conversion means 5
04,507,510 converts the output and displays all or any output on the respective test mode display means 505,508,511.

At this time, the level meter 115 causes a display different from that in the normal stage, such as blinking everything.

The processing in the test mode stage is performed according to FIG.

First, initialization is performed (step), and the detecting means 17 is set.
In step 6, the current pressure is read and the reference is memorized (step), and the frequency is further determined (step).

Then, it is confirmed by the test mode determining means 206 whether or not it is in the test mode stage. Next, the setting stage is read by the hand control means 130 (step), and it is confirmed whether or not the hand control means 130 has been operated (step). When the hand control means 130 has been operated, the buzzer 376 sounds (step). . When the hand control means 130 is not operated, it is determined whether or not the hand control means 130 is set to strong (step), and when the hand control means 130 is set to strong, strong processing is performed (step). . Further, when the setting is not strong, it is determined whether or not the setting is weak (step), and when the setting is weak, the weak processing is performed (step). Further, when the value is not set to weak, it is determined whether or not the setting is automatic (step), and when the setting is automatic, an automatic process is performed (step). Further, when it is not set to automatic, that is, when neither is set, it is turned off (step).

When clogging or the like occurs, the sound generation driving means 182
Drives the buzzer 376 of the sounding means 183.

Also, when a surge occurs due to static electricity in the vacuum cleaner body 101 or the hose section 121, the toroidal coil 32 may be used.
Absorb the surge at 3,326. When a high voltage equal to or higher than the set voltage set to a voltage value lower than the withstand voltage of the phototriac 396 due to this surge or the like is applied to the phototriac 396, the current is bypassed to the surge protector 398, and a high reverse voltage is applied to the light emitting diode 394. Is applied, bypasses the diode 394 and turns the photo triac 3
99 and the light emitting diode 394 are protected. Since there is no leakage current in the discharge gap, there is no malfunction and no adverse effect on the circuit.

According to the above embodiment, it is possible to simultaneously know all outputs of the terminals a, b, and c which need to be increased. Since the terminal is used in common during the normal stage and the test mode stage, the switching means 205 switches between the normal stage and the test mode stage.

In addition, since the reading is performed by the reading device 501 outside the vacuum cleaner, the processing state in the control unit 162 and the processing state of the signal can be known without increasing the weight of the vacuum cleaner.

Next, another embodiment of the present invention will be described with reference to FIG. 13 and FIG.

In the embodiment shown in FIG. 13, the terminals X, Y and Z are provided in the switching means 205 of the embodiment shown in FIG. 1 and FIG. A test mode output switching means 511 for switching to any one of the test mode outputs is provided between the test mode output means 208 and the data transfer means 195, and the output terminal of the test mode output means 208 is only the terminal a.

Further, the embodiment shown in FIG. 13 uses the reading device 501 having the configuration shown in FIG. The reading device 5 shown in FIG.
Reference numeral 01 designates three terminals X, Y and Z of the test mode setting means 502 of the reader 501 shown in FIG. 11 of the embodiment shown in FIGS. 1 to 12 and three test mode output buffer means 503. , Test mode output conversion means 504 and test mode display means 505 are each only one.

In the embodiment shown in FIGS. 13 and 14, an arbitrary output set by the test mode setting means 502 is determined by the test mode determining means 206, and only the output set by the test mode output switching means 511 is determined. The test mode output means 2
08 and output to the test mode display means 505 together with the type set by the mode setting means 502.

According to the embodiment shown in FIGS. 13 and 14, a plurality of outputs can be switched by one terminal, so that the number of terminals can be reduced.

Next, still another embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to the drawings.

The embodiment shown in FIG. 15 automatically switches the display mode at regular intervals to the test mode output switching means 511 shown in FIG. 13 of the embodiment shown in FIGS. 13 and 14 as the test mode means 204. Switching mode output means 517 which has a terminal G and is connected to the display mode switching means 516 and outputs a switching mode.
Is provided.

The embodiment shown in FIG. 15 uses the reading device 501 having the configuration shown in FIG. That is, the reading device 501 is provided with a test mode switching means 518 having a terminal G between one test mode output buffer means 503 and three test mode output conversion means 504, 507, 510.

In the embodiment shown in FIGS. 15 and 16, the display mode switching means 516 switches the output output from the test mode output means 208 at regular time intervals, and outputs the switched output to the switching mode output means 517. , And displayed on the respective display means by the test mode switching means 518. When there is no output corresponding to each display means, the previous output is stored and displayed, and the display means always displays all outputs.

According to the embodiment shown in FIGS. 15 and 16, the type of output of the test mode output means 208 is switched at regular time intervals, so that all outputs can be known even with a small number of terminals.

Next, still another embodiment of the present invention will be described with reference to FIG.

The test mode means 204 of the embodiment shown in FIG.
The output fluctuation comparing means 521 is connected between the test mode output temporary storage means 207 and the test mode output means 208, and the display mode switching means 516 is connected to the output fluctuation comparing means 521. In the case of the test mode means 204 shown in FIG. 17, the reading device 502 shown in FIG. 16 is used.

In the embodiment shown in FIG. 17, the output fluctuation comparing means 521 compares the fluctuations of each output, and preferentially selects and outputs and displays the output that changes by a certain value or more.

According to the embodiment shown in FIG. 17, it is not always necessary to always read the one with a small change, but only the one that has changed by a certain value or more is preferentially read, so that the output change can be read efficiently.

(Effect of the Invention) According to the vacuum cleaner of claim 1, the test mode output means outputs the output of the wind path detection means of the control means, the output of the current detection means, and the output corresponding to the suction force of the storage means. Since at least one of them is output and read by an external reading device, the processing state in the control means and the signal processing state can be known externally without increasing the weight.

According to the vacuum cleaner of the second aspect, the test mode output means simultaneously outputs all of the output of the wind path detection means of the control means, the output of the current detection means, and the output of the storage means corresponding to the suction force. Since the reading is performed by an external reading device, all outputs in the control means can be simultaneously known without increasing the weight.

According to the vacuum cleaner of the third aspect, the test mode output means outputs the output of the air path detection means of the control means, the output of the current detection means, and the output in a state corresponding to the suction force of the storage means at regular intervals. Since the output is changed and read by an external reading device, all outputs in the control means can be easily known without increasing the weight, for example, even with a small number of terminals.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a vacuum cleaner main body according to an embodiment of the present invention,
FIG. 2 is a block diagram showing a central processing unit of the above, FIG. 3 is a block diagram of a test mode unit of the above, FIG. 4 is a circuit diagram of a main body of the electric vacuum cleaner, FIG. FIG. 6 is a circuit diagram showing logic processing means according to the first embodiment;
FIG. 7 is a circuit diagram showing the same permission control means, FIG. 8 is a perspective view showing the same vacuum cleaner main body, FIG. 9 is a front view showing the same permission control means, FIG. FIG. 12 is a block diagram showing the same reading apparatus, FIG. 12 is a flowchart showing the same test mode means, FIG. 13 is a block diagram showing another embodiment of the test mode means, and FIG. 14 is a block diagram showing the same reading apparatus. FIG. 15 is a block diagram showing a test mode unit of still another embodiment, FIG. 16 is a block diagram showing a reading device of the above embodiment, and FIG. 17 is a block diagram showing a test mode unit of still another embodiment. . 101 ... vacuum cleaner body, 107 ... electric blower, 121 ...
Hose part, 130 ... hand control means, 162 ... control means, 17
1 ... current detecting means, 174 ... air path detecting means, 175 ... converting means, 176 ... detecting means, 186 ... output means, 199 ...
Storage means, 200 ... arithmetic processing means, 205 ... switching means, 20
8 Test mode output means, 501 Reading device.

Claims (3)

(57) [Claims] 1. An electric blower having an electric blower, a detecting means for detecting a suction capacity of the electric blower, and a control means for controlling an output of the electric blower, and detachably connected to the electric vacuum cleaner. A hose section, wherein the detecting section includes a wind path detecting section that detects a pressure or a flow rate in an air path of the vacuum cleaner main body, and a converting section that converts an output of the air path detecting section into an electrical output. The hose section has hand control means for controlling the electric blower, and a hose body including a transmission line for electrically connecting the hand control means and the control means of the vacuum cleaner body. The control means includes a current detection means for detecting an output from the hand control means, and an output at a stage corresponding to a suction force set for the outputs of the current detection means and the detection means. Storage means for performing an operation on the output from the storage means to set suction capacity, an output means for outputting an output for controlling the electric blower in accordance with the output of the operation processing means, Test mode output means for outputting an output of the air flow path detection means, an output of the current detection means, and an output in a state corresponding to the suction force of the storage means to the reading device, and a test mode stage output by the test mode output means or Switching means for switching to a normal stage in which the test mode output unit does not output, wherein the test mode output unit controls the output of the air path detection unit, the output of the current detection unit, and the suction force of the storage unit during the test mode stage. A vacuum cleaner, wherein at least one of the outputs in a corresponding state is selected and output. 2. The test mode output means simultaneously outputs all of the output of the air path detection means, the output of the current detection means, and the output in a state corresponding to the suction force of the storage means in the test mode stage. The vacuum cleaner according to claim 1. 3. The test mode output means switches and outputs the output of the air path detection means, the output of the current detection means and the output of the suction force of the storage means at regular intervals during the test mode stage. The vacuum cleaner according to claim 1.