JP2002355208A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner with stable dust detecting performance. SOLUTION: The electric blower 31 of this vacuum cleaner is controlled by the control means 32 in a working mode selected from a plurality of modes with different input power for the electric blower 31. Only in a case a working mode with the lowest input power for the electric blower 31 is selected, the control means 32 controls the electric blower 31 by input power higher than the lowest input power in the working mode for a prescribed time. Even in a working mode with the lowest input power for the electric blower 31, a folded dust collecting bag is inflated to enable the cleaner to secure a volume of collected dust. Thus a sense of incompatibility for noise from the electric blower 31 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having an electric blower.

[0002]

2. Description of the Related Art Conventionally, as a vacuum cleaner of this type, when an electric blower housed in a vacuum cleaner main body is started, the input power to the electric blower is controlled by a control means for about 5 seconds than rated input power. There is known a configuration in which the cleaning efficiency is always increased to improve the cleaning efficiency. Further, in this electric vacuum cleaner, dust collected by the electric blower of the main body of the vacuum cleaner is collected by a dust collection pack located on the suction side of the electric blower. This dust collection pack is folded before the electric blower is activated to collect dust.

[0003]

However, in this type of vacuum cleaner, even when the input power of the electric blower does not need to be higher than the rated input power, the cleaning efficiency when the electric blower is started is improved. Therefore, the input power to the electric blower at the time of startup is always higher than the rated input power. For this reason, there is a case where the electric blower is started with an input power higher than the input voltage for appropriately inflating the dust collection pack attached to the cleaner body, and there is a problem that there is a sense of discomfort when the electric blower is started. Have.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vacuum cleaner in which a dust-collecting pack expands properly and a feeling of strangeness in sound is reduced.

[0005]

According to a first aspect of the present invention, there is provided an electric vacuum cleaner, wherein an electric blower, a foldable dust collecting pack for collecting dust sucked by the electric blower, and input power to the electric blower are different. Controlling the electric blower in any of the operation modes selected from the plurality of operation modes, and only when the operation mode with the lowest input power of the electric blower is selected, the minimum input power in this operation mode Control means for performing high input control for controlling the electric blower with high input power for a predetermined time.

The control means for controlling the electric blower in any one of a plurality of operation modes having different input powers to the electric blower selects an operation mode in which the input power of the electric blower is the lowest. Only when this is the case, high input control for controlling the electric blower with input power higher than the minimum input power in this operation mode for a predetermined time is performed. For this reason, even in the operation mode in which the input power of the electric blower is the lowest, the folded dust collection pack expands and the amount of dust collection can be secured, and the uncomfortable feeling of the sound generated by the electric blower is reduced.

According to a second aspect of the present invention, in the electric vacuum cleaner according to the first aspect, the control means performs high output control only when the electric blower is started.

[0008] After the electric blower is activated, the dust collecting pack is sufficiently inflated. If the high output control is performed by the control means only when the electric blower is activated, the folded dust collecting pack can always be accurately de- signed. It will be inflated. As a result, the power output of the electric blower is not controlled after the electric blower is activated, so that the power consumption of the electric blower is reduced.

According to a third aspect of the present invention, there is provided an electric vacuum cleaner according to the first or second aspect, further comprising a cleaner main body having an electric blower and a dust collecting pack.
It is of a circulation type in which exhaust air from the electric blower is circulated to the intake side of the electric blower.

[0010] In a circulating cleaner body that circulates exhaust air from the electric blower to the intake side of the electric blower, the amount of air blown by the electric blower cannot be increased due to heat generation or the like. For this reason, when the operation mode in which the input power of the electric blower is the lowest is selected, if the electric blower is controlled by the control means with the input power higher than the minimum input power in this operation mode for a predetermined time, the folded dust collecting pack Can be properly expanded by the electric blower to secure the amount of dust collection.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of the vacuum cleaner according to the present invention will be described below with reference to FIGS.

1 to 4, reference numeral 1 denotes a cleaner body, and the cleaner body 1 is an electric blower housed therein.
This is a circulation-type vacuum cleaner that circulates the exhaust air of 31 to the intake side of the electric blower 31.

In the cleaner body 1, a lower case 2a having an open upper surface and an upper case 2b for closing the rear upper surface of the lower case 2a are joined to a peripheral edge including a front surface by sandwiching a bumper 3. It has a main body case 2 as a case body having an open front upper surface. The main body case 2 is formed so as to pivotally support a lid 4 for opening and closing the opening of the front upper surface so as to be openable and closable.

The main body case 2 has a swivel ring (not shown) attached to the front lower surface in the traveling direction. A large-diameter driven rear wheel 6 is rotatably provided on the rear side surface of the main body case 2. As a result, the cleaner body 1 can travel on the floor surface by the turning wheel and the driven rear wheel 6. A handle 7 slidable in the up-down direction is provided on the upper part of the main body case 2.

Further, at the substantially center of the front side of the cleaner body 1,
A suction port 11 for sucking air from the outside is opened. A hose 12 as a bendable and elongated cylindrical connection pipe is connected to the suction port 11 in a state where the hose 12 is communicated with the suction port 11. At the tip of the hose 12, there is provided a hand operation unit 13 capable of selecting an operation mode of the electric blower 31. This hand operation unit
The grip 13 is provided with a gripping portion 14 that is gripped by an operator during cleaning, protruding toward the base end side.

An elongated substantially cylindrical extension tube 15 is detachably connected to a distal end of the hand operation unit 13 in a state where the extension tube 15 is communicated with the extension tube 15. Further, an elongated substantially cylindrical extension tube 16 is detachably connected to the distal end of the extension tube 15 in a state where the extension tube 16 is in communication therewith. At the end of the extension tube 16, a suction port 17 that is installed on a surface to be cleaned such as a carpet in a room and sucks dust on the surface to be cleaned is detachably attached.

The cleaner body 1 communicated with the suction port 11
Inside, a paper pack 21 as a dust collection pack is attached. This paper pack 21 is foldable,
Dust sucked together with air from the air inlet 22 is separated from the air. This paper pack 21 corresponds to FIGS.
As shown in FIG. 1, an intake port 22 communicating with the suction port 11 of the cleaner body 1 is provided with a substantially rectangular flat base 23 opened substantially at the center. On one side surface of the base 23, a bag-shaped pack portion having an opening edge connected to the periphery of the air inlet 22 of the base 23 is provided.
24 are installed.

In the cleaner body 1 on the exhaust side of the paper pack 21, outside air is sucked in from the suction port 11 of the cleaner body 1, and the outside air is exhausted from an exhaust port (not shown) to the outside. The electric blower 31 is housed. The electric blower 31 is installed at the rear center in the cleaner body 1.
Further, the electric blower 31 has a plurality of input powers to the electric blower 31 different from each other, for example, one of three operation modes of “strong”, “medium” and “weak”. Control means 32 for controlling the electric blower 31 is electrically connected. This control means 32, as shown in FIG.
For example, it is connected to an AC voltage source 33 of 100V.

The control means 32 is electrically connected to the manual operation unit 13. When the input signal to the control means 32 is changed by operating the manual operation unit 13, the electric blower 31 is controlled by the control means 32. Change the operation mode. Specifically, as shown in the operation matrix of Table 1, the hand operation unit 13
When the operation mode of the electric blower 31 is selected to be "strong", the control means 32 drives the electric blower 31 with the rated input power of 500 W. When the operation mode of the electric blower 31 is selected as “medium” in the hand operation unit 13, the control unit
32 drives this electric blower 31 with the rated input power of 300W. Further, when the operation mode of the electric blower 31 is selected as “weak” in the hand operation unit 13, the control unit 32
The electric blower 31 is driven by the rated input power of W.

[0020]

[Table 1]

Further, the control means 32 includes an electric blower 31
When the operation mode with the lowest input power is selected, that is, when the operation mode of the electric blower 31 is selected as `` weak '' by the manual operation unit 13, when the electric blower 31 is started from the stop state, Only in the “weak” operation mode, high input control is performed to control the electric blower 31 for a predetermined time, for example, about 2 seconds at an input power higher than the minimum input power (100 W), for example, 500 W.

When the operation mode of the electric blower 31 is changed by the manual operation unit 13 during the operation of the electric blower 31, the control means 32 changes the input power to the electric blower 31 to the rated input voltage. That is, 500W for "strong", 3 for "medium"
00W and "weak" control at 100W.

Specifically, when the electric blower 31 is started from a stopped state, only when the operation mode of the electric blower 31 is selected to be "weak" by the manual operation unit 13, the electric blower 31 The control means 32 controls the input power to the blower 31 to be 500 W for about 2 seconds, and when the electric blower 31 is started, the pack section 24 of the paper pack 21 is sufficiently and accurately expanded.

Next, the operation of the embodiment will be described.

First, when the electric blower 31 is started from a stopped state with the operation mode of the electric blower 31 selected as “strong” or “medium” by the manual operation unit 13, the control unit 32 The input power to 31 is controlled to the rated input power, that is, 500 W or 300 W.

When the electric blower 31 is started from a stopped state in a state where the operation mode of the electric blower 31 is selected as "weak" in the manual operation unit 13, the control means 32 controls the electric blower 31. After input power to the electric blower 31 is controlled to 500 W which is higher than the rated input power for about 2 seconds to be 500 W higher than the rated input power, and the input power to the electric blower 31 is
And control.

Further, in a state where the electric blower 31 is operated, the operation mode of the electric blower 31 is changed from “strong” to “medium” or “weak” by the manual operation unit 13 and “middle” to “strong” or “weak”. , Or "weak" to "strong" or "medium"
The control means 32 controls the electric blower 31 with each rated input power.

As described above, according to the embodiment, after the lid 4 of the cleaner main body 1 is opened to replace the paper pack 21 in the cleaner main body 1, the electric power of the cleaner main body 1 is changed. When the blower 31 is started, the pack portion of the paper pack 21 is
In a state where 24 is not sufficiently expanded and swelled as shown in FIG. 2, dust is not easily sucked into the pack portion 24 of the paper pack 21, so that the cleaning efficiency of the electric blower 31 is reduced.

For this reason, when the electric fan 31 is started, if the pack portion 24 of the paper pack 21 is sufficiently expanded and swelled as shown in FIG. 3, dust is easily sucked into the pack portion 24. Therefore, the cleaning efficiency of the electric blower 31 does not decrease, and the dust accumulated on the base portion 23 side of the paper pack 21 moves into the pack portion 24 of the paper pack 21, so that the dust can be more easily sucked.

In particular, in the case of a circulation type vacuum cleaner, the amount of air blown by the electric blower 31 cannot be increased as compared with a non-circulation type vacuum cleaner due to heat generation and the like. In addition, electric blower 31
When the operation mode of the electric blower is
When operating the air blower 31, the input power to the electric blower 31 is controlled as low as 100W. For this reason, the electric blower 31
When the electric blower 31 is started from a stopped state in a state in which the operation mode of “
The air volume due to 31 is small and the pack portion 24 of the paper pack 21 does not expand sufficiently.

When the electric blower 31 is started from a stopped state in a state in which the operation mode of the electric blower 31 is selected as “high” or “medium” by the manual operation unit 13, the electric blower 31 Rated input power of 500W or 300W
Therefore, even if the input power to the electric blower 31 is not made higher than the rated input power, it is possible to accurately and sufficiently expand the pack portion 24 of the folded paper pack 21 at the time of starting the electric blower 31. .

Therefore, in the state where the operation mode of the electric blower 31 is selected to be "weak" by the manual operation unit 13, the electric blower
Only when starting the 31 from the stopped state,
After the input power to the power supply 31 is controlled to a high output of 500 W for 2 seconds by the control means 32, the input power of the electric blower 31 is controlled by the control means 32 to 100 W which is the rated input power.

As a result, when the control means 32 controls the input power to the electric blower 31 to be 500 W which is higher than the rated input power, the pack portion 24 of the paper pack 21 can be inflated accurately and sufficiently efficiently. Therefore, the amount of dust collected by the paper pack 21 can be secured, and the time required to increase the input power to the electric blower 31 is as short as 2 seconds. Therefore, when the electric blower 31 is activated, the sound generated from the electric blower 31 is reduced. The discomfort can be reduced.

Further, during the operation of the electric blower 31, the pack section 24 of the paper pack 21 is sufficiently and accurately expanded and swelled. In this state, the operation mode of the electric blower 31 is changed by the manual operation section 13. At this time, the control means 32 controls the input power to the electric blower 31 to be the rated input power. As a result, when the electric blower 31 is started, the power consumption by the electric blower 31 can be reduced as compared with the case where the input power to the electric blower 31 is higher than the rated input power in any operation mode.

Although the circulation type vacuum cleaner has been described in the above embodiment, a vacuum cleaner other than the circulation type vacuum cleaner may be used.

Further, a sensor (not shown) for detecting attachment and detachment of the paper pack 21 to and from the cleaner main body 1 is provided in the cleaner main body 1, and only when this sensor detects that the paper pack 21 is newly attached, The electric blower 31 can also be controlled by the control means 32 shown in the one embodiment.
As a result, the pack section 24 of the paper pack 21 can be expanded more efficiently, and the discomfort of the sound generated from the electric blower 31 when the electric blower 31 is activated can be further reduced.

[0037]

According to the first aspect of the present invention, only when the operation mode in which the input power of the electric blower is the lowest is selected, the electric blower is operated with the input power higher than the minimum input power in this operation mode for a predetermined time. Since the high-input control is performed by controlling the blower with the control means, even in the operation mode in which the input power of the electric blower is the lowest, the folded dust collection pack can be expanded and the amount of collected dust can be ensured, and the electric blower can be secured. The discomfort of the sound generated from the sound can be reduced.

According to the vacuum cleaner of the second aspect, in addition to the effect of the vacuum cleaner of the first aspect, if the high output control is performed by the control means only when the electric blower is started, the folded dust collection pack can be obtained. Is always inflated accurately, and since the electric blower is not controlled for high output after starting the electric blower,
Power consumption by the electric blower can be reduced.

According to the third aspect of the invention, in addition to the effect of the first or second aspect of the invention, the circulation-type vacuum cleaner main body cannot increase the air volume by the electric blower due to a problem such as heat generation. Only when the operation mode in which the input power of the electric blower is the lowest is selected, if the electric blower is controlled by the control means for a predetermined time at an input power higher than the minimum input power in this operation mode, the folded dust collection pack However, the electric blower inflates more accurately, and the dust collection amount can be secured.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a vacuum cleaner according to the present invention.

FIG. 2 is a perspective view showing the dust collecting pack of the electric vacuum cleaner in a folded state.

FIG. 3 is a perspective view showing an expanded state of the dust collecting pack.

FIG. 4 is a perspective view of the electric vacuum cleaner.

[Explanation of symbols]

 1 Vacuum cleaner body 21 Paper pack as dust collecting pack 31 Electric blower 32 Control means

Claims (3)

[Claims] An electric blower, a foldable dust collecting pack for collecting dust sucked by the electric blower, and an operation mode selected from a plurality of operation modes different in input power to the electric blower And controlling the electric blower, and only when the operation mode with the lowest input power of the electric blower is selected, controls the electric blower for a predetermined time with the input power higher than the minimum input power in this operation mode. An electric vacuum cleaner comprising: a control unit for performing control. 2. The vacuum cleaner according to claim 1, wherein the control means performs high output control only when the electric blower is started. 3. A cleaner body having an electric blower and a dust collecting pack, wherein the cleaner body is of a circulation type for circulating exhaust air of the electric blower to an intake side of the electric blower. The vacuum cleaner according to claim 1 or 2, wherein