JP5947141B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner having an air cleaning function.

  A conventional vacuum cleaner having an air cleaning function is disclosed in Patent Document 1. This vacuum cleaner has a main body with wheels that roll on the floor and a suction port facing the floor, and the suction port is connected to the main body via an extension pipe and a flexible connection hose. Is done.

  A first suction port to which a connection hose is connected opens on the front surface of the main body, and a first exhaust port opens on the rear surface. A first air passage that communicates the first suction port and the first exhaust port is provided in the main body. A dust collector and a first blower are disposed in the first air passage. Airflow including dust is sucked from the suction port body by driving the first blower. The airflow flowing into the first air passage through the first suction port is collected by the dust collecting portion and exhausted from the first exhaust port. Thereby, the floor surface can be cleaned.

  In addition, a second air passage that is partitioned from the first air passage is provided in the upper portion of the main body. The second air passage allows communication between a second suction port opened on the upper surface of the main body and a second exhaust port opened on the rear surface. A second blower is disposed in the second air passage so as to face the second suction port, and a filter is disposed in the second exhaust port. Indoor air flows into the second air passage from the second suction port by driving the second blower, and dust is collected by the filter and exhausted from the second exhaust port. Thereby, indoor air cleaning can be performed.

Japanese Patent Application Laid-Open No. 2004-135992 (page 3 to page 6, FIG. 2)

  However, according to the conventional vacuum cleaner, the second suction port opens on the upper surface of the main body, and therefore, foreign matter may enter the second air passage through the second suction port. Thereby, there existed a problem that there exists a possibility that the reliability of a vacuum cleaner may fall by damaging a 2nd air blower.

  An object of this invention is to provide the vacuum cleaner which can improve reliability in the vacuum cleaner which has an air purifying function.

  In order to achieve the above object, the present invention includes a main body connected to a suction port facing the floor surface via a first suction port, a first suction port, and a first exhaust port opening in the main body. A first air passage disposed in the main body portion, a first blower and a dust collecting portion disposed in the first air path, a second suction port and a second exhaust port opening in the main body portion, And a second air passage disposed in the main body portion, and a second blower and a filter disposed in the second air passage. The first air blower is driven to collect dust in the dust collection portion. In the vacuum cleaner that dusts and drives the second blower to collect dust in the air by the filter, an openable / closable lid provided on the main body and covering the second suction port, and the second blower And a lid opening / closing means for opening the lid portion during driving.

  According to this structure, the airflow containing dust is sucked from the suction port body by driving the first blower, and the airflow flows through the first air passage through the first suction port. The airflow flowing through the first air passage is collected by the dust collector and exhausted from the first exhaust port. When the second blower is driven, the lid is opened by the lid opening / closing means. As a result, indoor air flows from the second suction port into the second air passage, and dust is collected by the filter and exhausted from the second exhaust port.

  In the vacuum cleaner having the above-described configuration, the second blower is driven and the lid opening / closing means opens the lid when the first blower is driven. According to this configuration, when the first blower is driven, the second blower is driven, and the lid is opened by the lid opening / closing means.

  Further, the present invention is characterized in that, in the vacuum cleaner having the above-described configuration, after the first blower is stopped, the second blower is driven and the lid opening / closing means opens the lid. According to this configuration, when the first blower is stopped, the second blower is driven, and the lid is opened by the lid opening / closing means.

  In the electric vacuum cleaner having the above-described configuration, the lid opening / closing means closes the lid after the second blower is stopped. According to this configuration, when the second blower is stopped, the lid portion is closed by the lid opening / closing means.

  According to the present invention, in the vacuum cleaner configured as described above, the second suction port is disposed on the upper surface of the main body portion, and the first exhaust port and the second exhaust port are provided on the back surface of the main body portion, and the lid When the lid is opened by the lid opening / closing means, the airflow flows into the second suction port from behind when the portion is pivotally supported in front of the second suction port. According to this configuration, the dust on the floor surface is wound up behind the main body by the exhaust of the first exhaust port and the second exhaust port, and flows into the second air passage from the second suction port.

  The vacuum cleaner may further include a dust sensor for detecting the amount of dust in the room, and the lid opening / closing means may vary the opening / closing amount of the lid based on the detection result of the dust sensor. It is characterized by.

  ADVANTAGE OF THE INVENTION According to this invention, in the vacuum cleaner which has an air cleaning function, the vacuum cleaner which improved reliability can be provided.

The perspective view which shows the vacuum cleaner of embodiment of this invention The perspective view which shows the main-body part of the vacuum cleaner of embodiment of this invention. The perspective view which shows the state which opened the cover part of the main-body part of the vacuum cleaner of embodiment of this invention. Side surface sectional drawing which shows the state which closed the cover part of the rear part of the main-body part of the vacuum cleaner of embodiment of this invention. Side surface sectional drawing which shows the state which opened the cover part of the rear part of the main-body part of the vacuum cleaner of embodiment of this invention. The perspective view which shows the inside of the rear part of the main-body part of the vacuum cleaner of embodiment of this invention. The perspective view seen from the upper part which shows the rear part cover of the vacuum cleaner of embodiment of this invention The perspective view seen from the lower part which shows the rear part cover of the vacuum cleaner of embodiment of this invention

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a vacuum cleaner according to an embodiment. The vacuum cleaner 1 includes a main body 2 having wheels 7 that roll on the floor surface. A power cord 8 that can be pulled out and stored is provided on the back surface of the main body 2. The power cord 8 has a power plug 9 at its tip, and is supplied to the main unit 2 by being inserted into a commercial power outlet.

  A flexible connection hose 3 is connected to the front surface of the main body 2, and an extension pipe 4 is connected to the tip of the connection hose 3. A suction port body 5 having a suction port (not shown) facing the floor surface is provided at the tip of the extension pipe 4. The extension pipe 4 is provided with a gripping portion 13 and an operation portion 14. The user grips the grip portion 13 and moves the suction port body 5, and the cleaning operation is executed by the operation of the operation portion 14.

  FIG. 2 shows a perspective view of the main body 2. The main body 2 is covered with a main body cover 10, and a grip portion 10 a that is gripped by a user during transportation is provided on the upper portion of the main body cover 10. A first suction port 11a for connecting the connection hose 3 (see FIG. 1) is opened on the front surface of the main body cover 10, and a first exhaust port 11b is opened on the lower portion of the back surface. A first air passage 11 (see FIG. 4) that connects the first suction port 11a and the first exhaust port 11b is formed in the main body 2.

  A cyclone-type dust collecting unit 20 that holds the handle 20 a and is detachable upward with respect to the main body 2 is disposed at the front portion of the first air passage 11. A first blower 6 (see FIG. 4) is disposed behind the dust collection unit 20 in the first air passage 11. When the first blower 6 is driven, an air flow guided from the suction port body 5 (see FIG. 1) to the first exhaust port 11b through the dust collecting unit 20 flows.

  A second exhaust port 12b is opened on the back surface above the first exhaust port 11b of the main body cover 10, and a second suction port 12a that is opened and closed by a lid 15 is opened on the rear surface of the upper surface as shown in FIG. . In addition, a leg portion 19 that supports the main body portion 2 erected with the first and second exhaust ports 11b and 12b facing downward is projected at a lower portion of the back surface of the main body portion 2. The first and second exhaust ports 11b and 12b are disposed in front of the rear end surface of the leg portion 19. Thereby, when the main-body part 2 is stood up, it can exhaust, without blocking the 2nd exhaust port 12b.

  4 and 5 are side sectional views showing details of the rear upper part of the main body 2, FIG. 4 shows a closed state of the lid 15, and FIG. 5 shows an opened state. FIG. 6 is a perspective view showing the inside of the rear upper portion of the main body 2 and shows a state in which the main body cover 10 is removed. A second air passage 12 that is partitioned by a partition wall 25 with respect to the first air passage 11 in which the first blower 6 is disposed is provided in the upper rear portion of the main body 2.

  The second air passage 12 communicates the second suction port 12a that opens to the upper surface of the main body 2 and the second exhaust port 12b that opens to the back surface. A filter 16 that collects dust is disposed in the second air passage 12 so as to face the second suction port 12a. A second blower 17 composed of an axial fan is disposed in the second air passage 12 between the filter 16 and the second exhaust port 12b.

  The rotation axis of the second blower 17 is inclined downward with respect to the horizontal direction so that airflow can smoothly flow from the second suction port 12a on the upper surface to the second exhaust port 12b on the rear surface. In addition, since the 1st air path 11 and the 2nd air path 12 are divided, the fall of the suction efficiency at the time of cleaning is performed by the airflow distribution | circulation of the 1st air path 11 can be prevented.

An ion generator 30 is disposed below the second air passage 12. The ion generator 30 has a plurality of electrodes on the ion generation surface 30 a facing the second air passage 12. A voltage having an AC waveform or an impulse waveform is applied to the electrodes. When the applied voltage of the electrode is a positive voltage, ions combine with moisture in the air to generate positive ions mainly composed of H ⁺ (H ₂ O) m. When the applied voltage of the electrode is a negative voltage, the ions are combined with moisture in the air to generate negative ions mainly composed of O ₂ ⁻ (H ₂ O) n. Here, m and n are arbitrary natural numbers. H ⁺ (H ₂ O) m and O ₂ ⁻ (H ₂ O) n aggregate on the surface of airborne bacteria and odorous components and surround them.

Then, as shown in the formulas (1) to (3), the active species [.OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) are aggregated and formed on the surface of the microorganism or the like by collision. Destroy airborne bacteria and odorous components. Here, m ′ and n ′ are arbitrary natural numbers. By generating positive ions and negative ions and releasing them into the second air passage 12, the ions are sent into the room through the second exhaust port 12b. Thereby, indoor sterilization and deodorization can be performed.

H ⁺ (H ₂ O) m + O ₂ ⁻ (H ₂ O) n → OH + 1 / 2O ₂ + (m + n) H ₂ O (1)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2.OH + O ₂ + (m + m ′ + n + n ′) H ₂ O (2)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m ′ + n + n ′) H ₂ O (3)

  The second suction port 12 a is formed by an annular rear cover 18 attached to the main body 2. 7 and 8 show a perspective view of the rear cover 18 as viewed from above and a perspective view as viewed from below. Claw portions 18 a and 18 b are provided at the front end and the rear end of the rear cover 18, and the rear cover 18 is attached to the main body portion 2 with the claw portions 18 a and 18 b engaged. The lid portion 15 is pivotally supported by a shaft portion 15a in front of the second suction port 12a of the rear cover 18. The lid 15 is detachably provided, and is removed when the filter 16 (see FIG. 4) is replaced or cleaned.

  4 to 6, a gear portion 15 b is provided at the front end of the lid portion 15. The gear portion 15 b meshes with a gear 21 attached to the rotation shaft of the motor 22 disposed in the main body portion 2. By driving the motor 22, the lid portion 15 is rotated via the gear 21, and the second suction port 12a is opened and closed. Therefore, the gear 21 and the motor 22 constitute an example of a lid opening / closing means for opening and closing the lid portion 15.

  The lid portion 15 is opened from a closed state within a range where the rotation angle is 15 °. The larger the opening / closing amount of the lid portion 15, the larger the air flow rate becomes, but it becomes easier for foreign matters to fall from the lid portion 15 during operation. For this reason, the rotation angle from the closed state of the lid 15 is limited. Further, the angle with respect to the horizontal of the upper surface of the lid 15 is also limited with the lid 15 opened. Thereby, when the main-body part 2 of the vacuum cleaner 1 is moved and cleaned, damage by the catch of the cover part 15 can be prevented. Note that the angle of the upper surface of the lid 15 with respect to the horizontal with the lid 15 open is preferably 45 ° or less.

  In the vacuum cleaner 1 configured as described above, when the cleaning operation is started by the operation of the operation unit 14, the first and second blowers 6 and 17 are driven and the lid portion 15 is opened by the motor 22. The user grips the grip portion 13 and moves the suction port body 5 on the floor surface. The airflow containing dust on the floor surface flows through the suction port body 5, the extension pipe 4, and the connection hose 3, and flows into the first air passage 11 via the first suction port 11a. The airflow that has flowed into the first air passage 11 is collected by the dust collecting unit 20, passes through the first blower 6, and is exhausted from the first exhaust port 11b. Thereby, the room is cleaned.

  Further, the indoor air flows into the second air passage 12 through the second suction port 12a by driving the second blower 17. The airflow flowing into the second air passage 12 collects dust by the filter 16 and is exhausted from the second exhaust port 12b. Thereby, indoor air cleaning can be performed.

  At this time, since the rotation angle from the closed state of the lid portion 15 is limited, the foreign matter dropped from above the second suction port 12 a is blocked by the lid portion 15. Even if foreign matter enters from the second suction port 12a, the foreign matter is blocked by the filter 16 facing the second suction port 12a.

  Moreover, since the cover part 15 is pivotally supported by the front part, an airflow flows into the 2nd suction inlet 12a from back. Thereby, the dust of the floor surface wound up by the exhaust_gas | exhaustion of the 1st, 2nd exhaust port 11b, 12b distribute | arranged to the back can be efficiently guide | induced to the 2nd suction port 12a. Therefore, the indoor air cleaning effect can be improved. Furthermore, since the lid 15 is pivotally supported at the front, the lid 15 covers the opening of the rear cover 18 for the operator. Thereby, the noise from the 2nd air blower 17 with respect to an operator can be suppressed.

  When the operation unit 14 instructs to stop the cleaning operation, the first and second blowers 6 and 17 are stopped, and the lid portion 15 is closed by the motor 22. And the dust which removed the dust collection part 20 and deposited on the dust collection part 20 is discarded. At this time, since the lid portion 15 is closed, the lid portion 15 prevents foreign matter from entering the second air passage 12.

  In addition, you may provide the air cleaning exclusive mode which opens the cover part 15 and drives the 2nd air blower 17 for the predetermined time in the stop state of cleaning operation. The air cleaning only mode is carried out for a certain period of time after the end of the cleaning operation, for example. By doing in this way, the dust which is wound up in the air during the cleaning operation and floats in the air at the end of the cleaning operation can be collected.

  Here, the air cleaning only mode is performed in a state where the cleaning operation is stopped, and it is conceivable that the air cleaning only mode is performed in a state where the main body 2 is erected. According to the present embodiment, even when the air cleaning exclusive mode is performed in the standing state of the main body 2, the lid 15 pivotally supported at the upper end reliably prevents foreign matter from entering the second air passage 12. can do. And you may make it the cover part 15 close, after the air-cleaning operation | movement in the air cleaning exclusive mode stops.

  Further, when the air cleaning only mode is provided, it is conceivable that the user unplugs the power plug 9 (see FIG. 1) from the commercial power outlet during the air cleaning only mode. In consideration of this case, for example, a battery or a capacitor that supplies electric power to the motor 22 may be provided. With this configuration, even when the user pulls out the power plug 9 during the air cleaning only mode, the lid 15 can be closed. As a result, it is possible to reliably prevent foreign matter from entering the second air passage 12.

  Further, when there is no battery or capacitor for supplying power to the motor 22, when the power plug 9 is removed from the outlet of the commercial power supply, the lid 15 is stopped in an open state. In this state, when the power plug 9 is plugged into a commercial power outlet again, the lid 15 may operate in a closed state. Thereby, it can prevent mixing of the foreign material during the movement of the main-body part 2 by cleaning after making the cover part 15 into the closed state reliably.

  According to the present embodiment, the gear 21 and the motor 22 (lid opening / closing means) that open the lid 15 when the second blower 17 is driven are provided. As a result, indoor air cleaning is performed when the second blower 17 is driven, and foreign matter can be prevented from entering the second air passage 12 from the second suction port 12a by closing the lid 15. Therefore, the reliability of the vacuum cleaner 1 can be improved.

  Moreover, since the 2nd air blower 17 is driven at the time of the drive of the 1st air blower 6 and the cover part 15 is opened, indoor air cleaning can be performed during cleaning operation.

  Moreover, since the 2nd air blower 17 is driven and the cover part 15 is opened after the 1st air blower 6 stops, indoor air cleaning can be performed after completion | finish of cleaning operation.

  Moreover, since the cover part 15 is closed after the 2nd air blower 17 stops, the approach of the foreign material into the 2nd air passage 12 can be prevented after an indoor air cleaning driving | operation.

  The second suction port 12 a is disposed on the upper surface of the main body 2, and the first and second exhaust ports 11 b and 12 b are provided on the rear surface of the main body 2. And when the cover part 15 pivots and opens in front of the 2nd inlet 12a, airflow flows into the 2nd inlet 12a from back. Thereby, the dust of the floor surface wound up by exhaust of the 1st, 2nd exhaust port 11b, 12b during cleaning operation can be efficiently guide | induced to the 2nd suction port 12a, and an air purifying effect can be improved.

  In the present embodiment, a dust sensor for detecting the amount of dust in the room may be provided, and the opening / closing amount of the lid 15 may be varied based on the detection result of the dust sensor. That is, when the amount of dust in the room is large, the opening / closing amount of the lid 15 can be increased, and air cleaning can be performed reliably. Further, when the amount of dust in the room is small, the opening / closing amount of the lid portion 15 can be reduced to perform necessary air cleaning and further reduce the entry of foreign matter into the second air passage 12.

  Further, the lid opening / closing means for opening and closing the lid portion 15 is constituted by the gear 21 and the motor 22, but is not limited thereto. For example, the lid opening / closing means may be configured by a permanent magnet provided on the lid 15 side and an electromagnetic magnet provided on the main body 2 side, and the lid 15 may be opened / closed using a repulsive force between them.

  According to the present invention, it can be used for a vacuum cleaner having an air cleaning function.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Main part 3 Connection hose 4 Extension pipe 5 Suction port body 6 1st blower 10 Main body cover 11 1st air passage 11a 1st suction port 11b 1st exhaust port 12 2nd air passage 12a 2nd suction port 12b Second exhaust port 13 Grasping part 14 Operation part 15 Cover part 16 Filter 17 Second blower 18 Rear cover 19 Leg part 20 Dust collecting part 21 Gear 22 Motor 30 Ion generator

Claims (5)

A main body having wheels that are connected to a suction port facing the floor surface via a first suction port provided on the front surface and roll on the floor surface ;
A first air passage that communicates with the first suction port and the first exhaust port that opens in the main body and is disposed in the main body;
A first blower and a dust collecting unit disposed in the first air path;
A second air passage disposed in the main body portion in communication with the second suction port and the second exhaust port opening in the main body portion;
A second blower and a filter arranged in the second air path;
A vacuum cleaner that drives the first blower to collect dust in the dust collecting unit, and drives the second blower to collect dust in the air by the filter.
A lid that can be opened and closed provided on the main body and covers the second air inlet; and a lid opening and closing means that opens the lid when the second blower is driven .
A second suction port is disposed on the upper surface of the main body, and a first exhaust port and a second exhaust port are provided on the back surface of the main body, and the lid is pivotally supported in front of the second suction port. The vacuum cleaner is characterized in that the lid is rotated and opened upward by the lid opening / closing means, and when the lid is opened, airflow flows into the second suction port from the rear .   2. The vacuum cleaner according to claim 1, wherein when the first blower is driven, the second blower is driven and the lid opening / closing means opens the lid.   The vacuum cleaner according to claim 1 or 2, wherein after the first blower is stopped, the second blower is driven and the lid opening / closing means opens the lid.   The electric vacuum cleaner according to claim 3, wherein the lid opening / closing means closes the lid after the second blower is stopped. 5. The electric vacuum cleaner according to claim 1, wherein the vacuum cleaner covers an upper part of the second suction port and blocks entry of foreign matter from above with the lid part opened .

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