JP2006158568A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem that a dust collection case of a conventional vacuum cleaner leaves dust therein when removing the dust since static electricity is generated by friction or the like caused by sucked dust. <P>SOLUTION: A vacuum cleaner is provided with a main body 1 having a built-in motor fan 2 for generating suction air, and a dust collection case 9 connected with a suction head 8 for sucking dust and provided on the upstream side of the suction air of the motor fan 2 to collect the dust. The dust collection case 9 is discharged by a discharging means 11 for discharging the static electricity, so that the dust does not remain in the dust collection case when removing the dust, and a usable vacuum cleaner is provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric vacuum cleaner having a cyclone dust collecting unit that collects dust by intake air and turns the intake air to separate the dust.

In a conventional vacuum cleaner having a cyclone dust collecting portion, for example, as in a vacuum cleaner described in Patent Document 1 below, sucked dust is centrifuged by a swirling airflow in a dust case.
JP 2000-342492 A

  In the conventional configuration, static electricity is easily generated in the dust collection case due to the high-speed swirling airflow, and the dust case is likely to be charged. It was easy to become part of the state.

  Moreover, the main body etc. which are in contact with the dust collecting case are also affected, and there is a possibility that the control means for controlling the main body is broken or malfunctions.

  This invention solves the said subject, and it aims at providing the vacuum cleaner which can improve usability and can improve reliability.

  In order to solve the above-described conventional problems, the vacuum cleaner of the present invention communicates with a main body incorporating an electric blower that generates suction air, and a suction tool that is provided on the intake upstream side of the electric blower and sucks dust. The dust collecting case for collecting dust and a charge removing means for removing static electricity from the dust collecting case are provided.

  With the above configuration, the electrostatic charge of the dust collecting case can be removed, and the dust can be smoothly discarded when it is discarded, thereby improving usability.

  The electric vacuum cleaner of the present invention can neutralize static electricity charged in a dust collection case, a main body, etc. in a short time, improving usability and reliability.

  The invention according to claim 1 is a dust collection case that collects dust by being connected to a main body having a built-in electric blower for generating suction air and an intake device for sucking dust, provided on the intake upstream side of the electric blower. And a vacuum cleaner that neutralizes the static electricity of the dust collection case. The electrostatic charge of the dust collection case can be neutralized and can be disposed of smoothly when the dust is discarded, thereby improving usability. .

  According to the second aspect of the present invention, the static elimination means can perform static elimination for a predetermined time when in use, and with the above configuration, static elimination of the dust collecting case can be carried out periodically. Reliability can be improved.

  The invention according to claim 3 is capable of varying the operation of the static elimination means depending on the operation mode being used. Due to the above configuration, the static elimination level in the operation mode is received and the static elimination is performed in accordance with this level. It is possible to improve usability and reliability.

  The invention according to claim 4 sets the operation of the static elimination means in accordance with the time during which cleaning is being performed (used), can realize control according to the amount of charge, and can improve usability. .

  The invention described in claim 5 has dust detection means for detecting the presence or absence of dust in the suction air, and the operation of the static elimination means is set by the dust detection means, and depends on the amount of dust sucked. In response to the difference in static elimination level, static elimination can be carried out in accordance with this level, and similarly high usability and reliability can be obtained.

  According to the sixth aspect of the invention, immediately after use, the static elimination means is operated for a predetermined time, and the static elimination can be performed efficiently.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiment.

(Embodiment 1)
The first embodiment of the present invention will be described below with reference to FIGS.

  FIG. 1 is an external configuration diagram of a vacuum cleaner in the present embodiment, and FIG. 2 is a circuit block diagram.

  In FIG. 1, 1 is an electric vacuum cleaner main body, 2 is an electric blower that generates suction air, 3 is a connection pipe that is a fitting portion with the main body of the hose 4, and 6 is in the hose 4 and is set for operation. A tip pipe portion having a hand operation portion 5 (not shown) for performing the above, 7 is an extension pipe, and 8 is a floor nozzle portion which is a portion for sucking dust by suction air.

  2 and 3, reference numeral 10 denotes control means for controlling power supplied to the electric blower 2, that is, input. This control means is constituted by a microcomputer. Reference numeral 11 denotes a static elimination means that neutralizes static electricity.

  5 is a hand control unit for the user to control the operation of the vacuum cleaner, 6 is a tip pipe including the same, and one side is connected to the main body 1 of the vacuum cleaner by a hose 4 containing a signal line. The other side is connected to the extension pipe 7 and is composed of a hand operating unit 5 for switching the operation mode.

  Hereinafter, an embodiment of the present invention will be described with reference to FIG.

  When the operation of the electric blower 2 is instructed by the hand operation unit 5, the control means 10 receives the signal and drives the electric blower 2. When driving is started, the front surface of the electric blower 2 and the dust collecting case 9 become negative pressure, and the floor surface becomes negative pressure through the hose 4, the extension pipe 7 and the floor nozzle 8. Here, the suction air that becomes the negative pressure is used to suck in the dust.

  The sucked dust moves from the floor nozzle 8 to the extension pipe 7. Further, the sucked dust enters the dust collecting case 9 in the main body 1 through the hose 4. In this flow, the sucked dust collides with the inner surface or collides with each other at each site, and static electricity is generated. In this process, the static electricity generated is only discharged in the air and cannot be intentionally discharged (however, it is discharged to the commercial power line in the path through which the dust is sucked. It is different if the discharge part is installed as possible).

  Here, the dust collection case 9 in the main body 1 includes a conventional paper bag type and a paper bag called a cyclone method that is said to be unnecessary. In the case of the cyclone method, even after the dust reaches the dust collection case 9, the dust rotates inside the dust collection case 9, so that there are many elements that generate more static electricity than the paper bag type.

  Therefore, as shown in FIGS. 2 and 3, static elimination is performed by providing the static elimination means 11 (a part that comes in contact with the dust collecting case 9 is provided to release the charged static electricity, or the static electricity is generated. It may be neutralized with charged static electricity).

  By performing this operation, static electricity generated by suction of dust can be removed, so that the vacuum cleaner is easy to use.

  If the static elimination means 11 is configured to generate a high voltage, negative ions can be generated. (Such products have been proposed) Therefore, by using the negative ions to neutralize the charging of the main body 1, the same effect can be obtained for static elimination. Here, in the case of negative ions, the effect can be obtained by discharging into the air by the switching means 12 and contacting the place where the charge is to be removed at the time of static elimination.

Now, the operation of the charge removing means 11 when discharging is described.
Although the static eliminating means 11 is very effective if it is always operated, a method for effectively eliminating static electricity from the viewpoint of energy saving and life will be described.

  First, the case where static elimination is performed for a predetermined time while the vacuum cleaner main body 1 is operating will be described.

  As shown in FIG. 6, when the operation of the main body 1 is continued, the electrostatic charge amount basically increases (although there is a discharge to the air, it is somewhat reduced). Therefore, the static elimination means 11 is operated at every predetermined time. Then, the electrostatic charge amount can be suppressed at the level A in FIG. In order to reduce the electrostatic charge amount from the line A, it is possible to cope with the problem by shortening the time interval for driving the static elimination means 11.

  Next, even in the operation mode (strong, weak, etc.) being used, a difference appears in the electrostatic charge amount. This is because, for example, when compared with the strong and weak operation modes, the suction air velocity is faster in the strong operation mode than in the weak operation mode, and the dust collides with the inner surface of the main body. There are many things to do. In other words, the energy generated by static electricity is large.

  In view of this difference, when the static electricity charged by the static elimination means 11 is eliminated, the operation interval of the static elimination means 11 is changed according to, for example, strong and weak operation modes as shown in FIG. To change. For example, as shown in FIG. 7, when the charge level after the operation of the charge eliminating unit 11 is the same level, the interval is determined by the ratio of the difference between the strong and weak changes of the charge before the operation of the charge eliminating unit 11 to I think that the operation interval of the means 11 should be decided. As a result, it can be suppressed with the same amount of charge.

  The configuration in FIG. 8 will be described.

  The timer means 14 is for posting the time during which the electric blower 2 is operating, and the storage means 15 is for storing the time. The control means 10 sends a signal to the timer means 14 at the same time as instructing the operation of the electric blower 2. Receiving this, the timer means 14 starts timing. The storage means 15 stores a time measurement signal (time measurement time) sent from the timer means 14 via the control means 10 during operation.

  As for this operation, as shown in FIG. 9, if the operation time is long, the charge amount increases. Therefore, the static elimination unit 11 is operated every predetermined time to eliminate the charge.

  Here, the storage means 15 counts the operation time while storing the operation time because there is a short stop time when cleaning is performed and the vehicle is often restarted.

  In FIG. 10, 16 is a dust detection means for detecting the presence or absence of dust in the suction air. Although dust enters the dust collection case 9 and static electricity is generated due to contact, friction, etc. between the dust and the dust collection case 9, the generation amount is extremely reduced without this dust. (FIG. 11) Accordingly, dust is detected by the dust detection means 16 capable of detecting the presence or absence of dust, and the charge removal means 11 is operated in accordance with the amount of charge to perform charge removal.

  Furthermore, the amount of static electricity generated (charged) differs when a large amount of dust is continuously sucked and when a large amount of dust is sucked. As shown in FIG. 12, when a large amount of dust is sucked, the possibility of contact with the dust collecting case 9 increases and the amount of static electricity increases. On the other hand, if there is no single continuous trash, the amount of static electricity will not increase and the difference will be clear. Therefore, when the amount of dust is detected (the amount of dust can also be detected by the continuous detection of the dust detection means 16), the charge removal means 11 is operated at a predetermined charge amount to be discharged.

  When using a vacuum cleaner, it is generally said that it takes several minutes (one day). Among them, the charge removal is performed. However, since the charge is performed in the state where the operation is being performed, the point of time when the use is completed is effective for performing the charge removal efficiently. Therefore, the control means 10 operates the static elimination means 11 at the timing when the cleaning is completed (when a stop switch <not shown> in the hand operation unit 5 is pressed). As a result, it is possible to reliably perform static elimination in the final stopped state other than during operation.

  In addition, it is possible to notify the user that the user is surely charged and that the charge is being removed by performing display during the charge removal.

  This display means <not shown> can obtain the same effect even if it is notified by an infrared light emitting diode, a buzzer, a liquid crystal, and further vibration.

  As described above, the vacuum cleaner according to the present invention can efficiently neutralize static electricity generated when dust is sucked, and can suppress malfunctions due to static electricity and deterioration of reliability. .

(A) Main part perspective view of the vacuum cleaner in Embodiment 1 of this invention (b) Main body sectional drawing of the vacuum cleaner in Embodiment 1 of this invention The circuit block diagram of the vacuum cleaner in Embodiment 1 of this invention Main body sectional drawing of the vacuum cleaner in Embodiment 1 of this invention Main body sectional drawing of the other vacuum cleaner in Embodiment 1 of this invention The circuit block diagram of the vacuum cleaner in Embodiment 1 of this invention Timing chart of static elimination means of vacuum cleaner in Embodiment 1 of the present invention Timing chart of charge eliminating means and charge amount of vacuum cleaner in embodiment 1 of the present invention The circuit block diagram of the other vacuum cleaner in Embodiment 1 of this invention Relationship diagram between the operating time and the charge amount of the electric vacuum cleaner according to Embodiment 1 of the present invention The circuit block diagram of the vacuum cleaner in Embodiment 1 of this invention Relationship diagram between amount of dust and amount of charge of vacuum cleaner in embodiment 1 of the present invention Relationship diagram between dust suction timing and charge amount of electric vacuum cleaner according to Embodiment 1 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Electric blower 3 Connection pipe 4 Hose 5 Hand operation part 6 Tip pipe 7 Extension pipe 8 Floor nozzle 9 Dust collection case 10 Control means 11 Static elimination means 12 Switching means 14 Timer means 15 Storage means 16 Waste detection means

Claims (6)

A main body having a built-in electric blower for generating suction air; a dust collection case that is provided on the upstream side of intake of the electric blower and sucks dust; and that collects dust; and static electricity of the dust collection case A vacuum cleaner provided with static elimination means for eliminating static electricity. The electric vacuum cleaner according to claim 1, wherein the static elimination means performs static elimination for a predetermined time during use. The electric vacuum cleaner according to claim 1 or 2, wherein the operation of the static elimination means can be varied depending on the operation mode being used. The vacuum cleaner of any one of Claims 1-3 which sets operation | movement of a static elimination means according to the time currently used. The vacuum cleaner according to any one of claims 1 to 4, further comprising dust detection means for detecting the presence or absence of dust in the suction air, wherein the operation of the charge removal means is set by the dust detection means. The vacuum cleaner according to any one of claims 1 to 5, wherein the static eliminator is operated for a predetermined time immediately after use.

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