JP3915764B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner used in a general household.

  A conventional vacuum cleaner is generally shown in FIG. 4 and will be described with reference to the drawings.

  Conventionally, a vacuum cleaner using a secondary battery as a power source is known. As shown in FIG. 3, an electric blower 2 is arranged in the cleaner body 1, a dust collection chamber 8 is arranged on the suction side of the electric blower 2, and the sucked dust or the like is collected in the dust collection chamber 8. It has a dust bag 9 that cleans the dirty air that it contains. Moreover, the secondary battery 10 for rotating the electric blower 2 is provided in the cleaner body 1, and a nickel-cadmium battery or a lead battery is used as the secondary battery.

  In such a conventional vacuum cleaner, the secondary battery consisting of a nickel cadmium battery or a lead battery has a small electric capacity. Therefore, if the vacuum cleaner is used for a longer time or if the suction force is increased, the number of batteries increases. There is a problem that the mass of the main body is greatly increased, the main body is further enlarged, and portability and stowability are lowered. In addition, rechargeable vacuum cleaners that use nickel metal hydride batteries are known for the handy type, but for small and light vacuum cleaners such as handy types, if the number of nickel metal hydride batteries is increased, the mass and the body There is a limit to improve the suction force.

  SUMMARY OF THE INVENTION The present invention solves the above-described problems, and provides a vacuum cleaner that improves the suction force and reduces the increase in the mass of the main body even if it is used for a long time. The purpose is to provide.

In order to achieve the above object, the present invention comprises a vacuum cleaner body incorporating an electric blower and a battery for driving the electric blower, and the input to the electric blower is increased for a certain period from the start of operation. is inputted to the high suction power state, then Rutotomoni is changed to regular use, the cleaner according to the time the power has been turned off in the body, Due to the fact that changing the input value of the high suction power state, By improving the initial dust collection property at the start of cleaning, dust can be collected efficiently and the usable time can be further extended.

  According to the present invention, the size and weight of the main body can be reduced, the suction force can be improved, the increase in the mass of the main body can be reduced even if the usage time is lengthened, and the main body can be reduced in size and improved in portability and storage. Can provide a vacuum cleaner.

The first invention includes a vacuum cleaner body incorporating an electric blower and a battery for driving the electric blower, and the input to the electric blower is increased for a certain period of time from the start of operation in a high suction force state. as input, then, causes changes to the input of the normal use, the cleaner according to the time the power has been turned off in the body, intended to change the input value of the high suction power state, the initial precipitator at cleaning start By improving the performance, dust can be collected efficiently and the usable time can be further extended. In addition, when the power is turned off, the input immediately before the power is turned off can be reproduced without returning to the initial high suction force state, thereby further extending the use time. In addition, when a certain amount of time has passed after the power is turned off, it is determined that the cleaning place has been changed, and the input is returned to the high suction force state, so that the initial dust collection performance can be improved.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to FIGS. 1, 2, and 3. FIG. As shown in FIGS. 1 and 2, the cleaner body 1 includes an electric blower 2, and includes a hose 3 connected to the body 1 at one end, an extension pipe 4 connected to the other end of the hose 3, and a suction tool 5. The vacuum cleaner body 1 is provided with 24 HR23 / 43 type nickel metal hydride batteries 6 for driving the electric blower 2. The electric blower 2 is an inverter motor. The total mass of the nickel-metal hydride battery 6 is approximately 40% of the mass of the vacuum cleaner body 1, the input to the electric blower 2 can be controlled in a plurality of stages, the minimum power consumption of the electric blower 2 is 100 W or more, and suction The work rate is 20 W or more, the degree of vacuum at the time of the maximum suction work rate is 3000 Pa or more, the open air volume before dust collection is 0.4 m ³ / min or more, and the current value is 15 A or less. The input to the electric blower 2 can control the state of the floor, the presence or absence of dust, or the amount of dust in the dust collection chamber (not shown) by detecting a change in the rotational speed of the electric blower 2 in a plurality of stages. ing.

  In order to eliminate the voltage behavior due to the memory effect during charging, a charge selection switch is provided so that the user can select whether to recharge once and then recharge without recharging once (not shown) When the battery voltage becomes equal to or lower than the discharge end voltage, the circuit is interrupted and the electric blower 2 is stopped to inform the user of the necessity of charging.

  The input to the electric blower 2 is controlled so that the normal use state and the high suction force state can be selected. The input in the high suction force state is approximately 1.5 times the input in the normal use state, and the suction in the high suction force state. The work rate is about 1.2 times or more of the suction work rate in the normal use state, and after 10 seconds of operation in the high suction force state, the normal input state is shifted to the normal use state while gradually shortening the input time. Thus, the power consumption of the control circuit (not shown) is reduced when the remaining amount of the battery 6 drops below a predetermined level.

  Further, a display means 7 is provided on the surface of the main body 1 for detecting the degree of vacuum in the dust collection chamber or the current value or the rotational speed of the electric blower 2 in a high suction force state and notifying the user of the amount of dust in the dust collection chamber. ing. Further, the input to the electric blower 2 rises when the suction tool 5 or the extension pipe 4 and the suction tool 5 are removed from the hose. Further, the type of the floor surface, the presence or absence of dust on the floor surface, or the amount of dust in the dust collection chamber is detected, or depending on the time when the electric vacuum cleaner body 1 is turned off or the remaining battery level. Accordingly, the transition method from the input in the high suction force state to the input in the normal use state is changed.

  The operation of the above configuration is as follows.

  The nickel-metal hydride battery 6 is lighter in weight and has a larger battery capacity than the lead battery and nickel-cadmium battery known as conventional secondary batteries, so the main body 1 is lightweight while maintaining the same suction force as before. It is possible to increase the use time, or to improve the suction force even with the same mass, and to increase the use time. Moreover, by using 24 batteries, the power consumption is 80 W or more, the usable time is 25 minutes or more, and the main body mass is 4000 g or less. Further, the suction force and usable time can be optimally adjusted by detecting the state of the floor surface, the presence or absence of dust, or the amount of dust in the dust collection chamber and controlling the input to the electric blower 2 in a plurality of stages. In addition, there is an advantage that the user can select a charging method in accordance with the time for cleaning, and the problem that the user cannot charge the battery when it is used is less likely to occur.

  Further, when the voltage of the battery 6 becomes equal to or lower than the end-of-discharge voltage, the circuit is interrupted and the electric blower 2 is stopped to inform the user of the necessity of charging, so that the suction force is reduced and the cleaning is hindered. The user can be notified in advance, and the battery life is not deteriorated without overdischarge.

  Furthermore, since the electric blower 2 is an inverter motor, the electric blower 2 generates less heat, and the battery 6 and the electric blower 2 can be arranged close to each other, so that the main body 1 can be further reduced in size. Moreover, since the exhaust temperature of the electric blower 2 is normally 30 ° C. to 40 ° C. and lower than the temperature of the battery 6 that is 40 ° C. to 60 ° C. during charging or discharging, the exhaust gas is applied to the battery 6 to increase the temperature of the battery 6. It can be reduced and the battery life is also increased.

  Further, the input to the electric blower 2 is controlled so that the input in the normal use state and the input in the high suction force state can be selected, and the input in the high suction force state is set to about 1.5 times or more of the input in the normal use state. By automatically shifting to the normal use state after a certain period of operation in a high suction force state, it is possible to ensure a high suction force without increasing the number of batteries 6 and at the same time shorten the usable time. Can be limited.

  The display means 7 is provided to detect the degree of vacuum in the dust collection chamber in the high suction force state or the current value or rotation speed of the electric blower 2 and inform the user of the amount of dust in the dust collection chamber. However, it is difficult to detect these changes due to low rotation speed and vacuum, but by providing a high input state, changes in input, rotation speed, and vacuum can be easily captured and the amount of dust in the dust collection chamber is used accurately. Can be informed.

  Further, conventionally, a rechargeable vacuum cleaner has not been able to sufficiently collect dust due to a low suction force, such as when cleaning a gap, but using a nickel metal hydride battery 6 and a suction tool 5 or an extension pipe 4 When the suction tool 5 is removed from the hose 3, the input to the electric blower 2 is automatically raised, so that a high suction force can be secured and dust can be collected sufficiently. Also, the input in the high suction force state is set to about 1.5 times or more of the input in the normal use state, the suction work rate in the high suction force state is set to about 1.2 times or more in the normal use state, and the battery Since the power consumption of the control circuit is reduced when the remaining amount falls below a predetermined level, a high suction force state can be secured without increasing the number of batteries, and at the same time, the shortening of the usable time can be minimized.

  Furthermore, by keeping the input of the high suction force state constant for 10 seconds and maintaining the time of the high suction force state for a long time, the paper bag (not shown) in the dust collection chamber can be opened widely, and the dust collection amount is improved. it can. Moreover, as shown in FIG. 3, by shifting in a stepwise manner from an input in a high suction force state to an input in a normal use state, the unnaturalness as a use feeling due to lowering the input to the normal use state at once is eliminated. By gradually lowering the input time in stages, the input in a high suction force state is maintained long enough not to make the use feeling unnatural, and a natural initial use feeling is obtained. Maintenance of dust performance can be realized.

  Furthermore, in this embodiment, the input value is shifted from the input in the high suction force state to the input in the normal use state while shortening the operation time at the input value at that time, but conversely the operation time of the input value at that time. If the transition is made while lengthening, the input time in the high suction force state can be further shortened to such an extent that the feeling of use does not become unnatural. Furthermore, the input from the high suction force state to the intermediate input between the high suction force state input and the normal use state input gradually shifts to shorten the occasional input time. If the transition is made for a long time, sufficient initial dust collection performance is achieved by maintaining the input in the state of high suction force so long as the actual feeling does not become unnatural, and the intermediate input is unnatural. By keeping it short enough not to become a problem, the usage time can be further extended, and it can be kept long in the vicinity of the input in the final normal use state to obtain a more natural feeling of use.

  It also detects the type of floor surface, the presence or absence of dust on the floor surface, or the amount of dust in the dust collection chamber, and changes the transition method from high suction force input to normal use input to collect dust. By keeping the suction force state as high as possible on carpets that are difficult to carry out or where there is a lot of dust, it is possible to efficiently collect dust while minimizing the reduction in usable time. Furthermore, the excessive temperature rise of the electric blower 2 can be prevented by shortening the high suction force state as the amount of dust in the dust collection chamber increases. Moreover, the transition method from the input of the high suction force state to the input of the normal use state is changed according to the time when the electric power of the vacuum cleaner body 1 is turned off. The input just before the power is turned off without returning to the high suction force state can be reproduced to further extend the usage time.

  In addition, when a certain amount of time has passed after the power is turned off, it is determined that the cleaning place has been changed, and the input is returned to the high suction force state, thereby improving the initial dust collection performance. In addition, the transition from the high suction force state input to the normal use state input is changed according to the remaining battery level, and the usage time can be extended by shortening the high suction force state when the battery level is low. it can. In addition, when the remaining amount of the battery is large, the high suction force state can be maintained for a long time, and the initial dust collection performance can be improved. As a result, even if the suction force is improved and the usage time is extended, the mass of the main body 1 does not increase, the main body 1 can be miniaturized, the portability and the storage property are improved, and the electric cleaning adapted to the life cycle of the user Can provide a machine.

  As described above, the vacuum cleaner according to the present invention achieves a reduction in the size and weight of the main body, improves the suction force, reduces the increase in the mass of the main body even if the usage time is extended, and reduces the size of the main body. Since portability and storage are improved, it is useful for improving the dust collection performance and usability of the rechargeable vacuum cleaner.

Whole view of the vacuum cleaner which shows the 1st Embodiment of this invention Cross section of the vacuum cleaner Change of input value during operation of the vacuum cleaner Configuration of conventional vacuum cleaner

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Electric blower 3 Hose 4 Extension pipe 5 Suction tool 6 Nickel metal hydride battery

Claims (1)

A vacuum cleaner main body with a built-in electric blower and a battery for driving the electric blower, and the input to the electric blower is increased for a certain time from the start of operation to be an input of a high suction force state. It causes changes in the input state of use, according to the time the power supply has been cut of the cleaner body, an electric vacuum cleaner to change the input value of the high suction power state.

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