JP-7856832-B1 - Electric vacuum cleaner

JP7856832B1JP 7856832 B1JP7856832 B1JP 7856832B1JP-7856832-B1

Abstract

[Problem] To provide an electric cleaning device that can prevent dust separated in the second centrifugal separation section from becoming stuck. [Solution] The stand 3 includes a stand body 34 that supports the vacuum cleaner 2, a second dust collection unit, a communication air passage 3402 that connects the second dust collection unit and the first dust collection unit 227 of the vacuum cleaner 2 supported by the stand body 34, and a second electric blower that generates suction force to transfer dust from the first dust collection unit 227 to the second dust collection unit via the communication air passage 3402. The vacuum cleaner 2 has an inlet 263 that communicates between the first electric blower 21 and the second centrifugal separation unit 225, allowing air to be introduced while the vacuum cleaner 2 is supported by the stand body 34 of the stand 3. [Selection Diagram] Figure 1

Inventors

中村佳隆
江部清
田中章義
鳥澤陽

Assignees

美的集団股▲フン▼有限公司

Dates

Publication Date: 20260511
Application Date: 20250729

Claims (4)

An electric vacuum cleaner having: a main intake port for sucking in dust-laden air during cleaning; a first electric blower that generates suction force to suck in the dust-laden air from the main intake port ; a first centrifugal separator that centrifuges dust from the sucked-in dust-laden air; a second centrifugal separator that centrifuges dust from the dust-laden air that has passed through the first centrifugal separator; and a first dust collection unit that collects the dust separated in the first centrifugal separator and the dust separated in the second centrifugal separator. The stand comprises a support section for supporting the aforementioned vacuum cleaner, a second dust collection section, a connecting air passage connecting the second dust collection section and the first dust collection section of the vacuum cleaner supported by the support section , and a second electric blower for generating suction force. The electric vacuum cleaner further has an inlet that allows air to be introduced between the first electric blower and the second centrifugal separator , With the electric vacuum cleaner supported on the support portion of the stand, the suction force of the second electric blower introduces air into the first centrifugal separator through the main unit's suction port and into the second centrifugal separator through the inlet, thereby transferring dust from the first dust collection unit to the second dust collection unit via the connecting air passage. An electric cleaning device characterized by the following features.
The electric vacuum cleaner has a cylindrical shape in which the cross-sectional area gradually decreases from one end on the side of the first electric blower to the other end on the opposite side, and has a separation cylinder that encloses the second centrifugal separation section inside. The separation cylinder section is provided with a dust-containing air inlet for introducing dust-containing air during centrifugal separation in the second centrifugal separation section, and a cylindrical discharge cylinder section for discharging the air after dust has been separated by centrifugal separation in the second centrifugal separation section, at one end, and a dust discharge port for discharging the separated dust at the other end. The electric cleaning device according to claim 1, characterized in that the central axis of the separation cylinder, the central axis of the discharge cylinder, and the center of the dust discharge port are arranged on the same axis.
The aforementioned first dust collection unit is A first dust collection unit that collects the dust separated in the first centrifugal separation unit, The system comprises a second dust collection unit for collecting the dust separated in the second centrifugal separation unit, The electric vacuum cleaner has a collection cylinder located inside the first centrifugal separation unit and the first dust collection unit, which partitions the second dust collection unit internally. The aforementioned accumulation cylinder portion is The first part into which dust discharged from the dust outlet is introduced, This first part is equipped with a second part that collects dust introduced into it, The first part has a guide surface that guides dust to the second part, The electric cleaning device according to claim 2, characterized in that it is located at a position where the axis of the separation cylinder and the guide surface intersect.
The electric cleaning device according to claim 3 , characterized in that the collection cylinder portion is narrower on the opposite end side than on the end side which is the dust discharge port side.

Description

Embodiments of the present invention relate to an electric vacuum cleaner and a stand equipped with an electric vacuum cleaner. Conventionally, there is a known type of vacuum cleaner equipped with a multi-stage separation dust collection system consisting of an upstream centrifugal separator and a downstream pleated filter. After use, the vacuum cleaner is mounted on a stand, and the dust collected in the dust collection system is sucked up by an electric blower on the stand and transferred to the dust collection section of the stand. Simultaneously, the exhaust air from the electric blower on the stand is circulated back to the centrifugal separator of the vacuum cleaner to air-clean it. In the case of such electric cleaning devices, there is a need to prevent dust from accumulating and clogging the downstream pleated filter over time. However, even if the exhaust air from the electric blower is simply circulated through the pleated filter to remove the dust attached to it, the high airflow resistance of the pleated filter reduces the airflow velocity as it passes through, potentially resulting in insufficient removal of other dust particles. Japanese Patent Publication No. 2021-78685 This is a cross-sectional view showing a part of the vacuum cleaner of one embodiment of an electric cleaning device, with the vacuum cleaner mounted on a stand.This is a cross-sectional view showing a part of the same electric vacuum cleaner.This is a cross-sectional view showing the same electric vacuum cleaner mounted on its stand.This is a perspective view showing the stand for the electric vacuum cleaner shown above.This is a perspective view showing the same electric cleaning device. The following describes one embodiment with reference to the drawings. In Figures 3 and 5, 1 represents an electric vacuum cleaner. The electric vacuum cleaner 1 comprises an electric vacuum cleaner 2 and a stand 3. The electric vacuum cleaner 1 is configured such that, during cleaning, the electric vacuum cleaner 2 is removed from the stand 3 and operated. After cleaning is complete, the stopped electric vacuum cleaner 2 can be attached to the stand 3 for storage. The vacuum cleaner 2 is equipped with a first power supply unit 20, which is the power supply unit for the vacuum cleaner, and is driven by power supplied from the first power supply unit 20. The vacuum cleaner 2 is also equipped with a first electric blower 21, which is the electric blower unit for the vacuum cleaner. The suction operation of the first electric blower 21 separates and collects dust in the dust collection unit 22. The operation of the first electric blower 21 is controlled by a first control means, which is the control means for the vacuum cleaner. Furthermore, the vacuum cleaner 2 is equipped with a gripping unit 24 for gripping during cleaning operations. In addition, the vacuum cleaner 2 is equipped with an operation switch 25 for setting the operating operation of the vacuum cleaner 2, and the operating operation of the vacuum cleaner 2 is controlled according to the user's operation of the operation switch 25. The vacuum cleaner 2 is, for example, a handheld or stick-type vacuum cleaner. The vacuum cleaner 2 comprises a vacuum cleaner body 26, to which an attachment, the suction nozzle 27, is connected either directly or via a pipe 28. The figure shows an example where the suction nozzle 27 is connected to the vacuum cleaner body 26 via the pipe 28. The vacuum cleaner 2 is detachable from the stand 3; it is removed from the stand 3 during use and reattached to the stand 3 when cleaning is finished or for storage. In the following description, the direction of the vacuum cleaner 2 and stand 3 will be explained based on the state in which the vacuum cleaner 2 is attached to the stand 3. In the figure, the direction of arrow U is considered the upper side, arrow D the lower side, arrow FR the front side, and arrow RR the rear side. For the left-right direction, the view from the rear to the front is used as the reference point, with arrow L the left side and arrow R the right side. In this embodiment, a cordless vacuum cleaner is given as an example, where the first power supply unit 20 is a DC power supply unit such as a secondary battery or a rechargeable battery. However, a cord reel device or the like that draws power from a commercial power source may also be used. The first power supply unit 20 is located, for example, inside the vacuum cleaner body 26. The first electric blower 21 is operational by power supplied from the first power supply unit 20. The operation of the first electric blower 21 is controlled by the first control means, which controls the power supply from the first power supply unit 20. A microcontroller is preferably used as the first control means. The first control means is operational by power supplied from the first power supply unit 20. A signal corresponding to the user's operation from the operation switch 25 is input to the fir