JPH0346132B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a vacuum cleaner having a mechanism for killing pests such as mites sucked into a dust collection chamber.

[Prior art] Pests such as dust mites that are inhaled along with dust when cleaning a room are usually filtered out by a filter in the dust collection chamber and are not discharged outside the vacuum cleaner, but there is a risk that they may breed inside the dust collection chamber. To prevent this, it is necessary to kill and completely exterminate them.
Pests such as mites are said to die when exposed to hot air of about 50 degrees Celsius. Therefore, there is a device that circulates the exhaust heat generated by driving an electric blower into the dust collection chamber using a hose to raise the temperature inside the dust collection chamber and kill pests such as mites in the dust collection chamber, for example. It is known as shown in Japanese Patent No. 127026/1983. The outline is as shown in FIG. 7, and the tip of the suction hose 51 inserted into the suction port of the main body case 50 is connected to the exhaust outlet 53 of the electric blower 52 of the main body case 50.
The second hot exhaust stream is circulated through the suction hose 51 to the dust collection chamber 54 to kill pests such as mites in the dust collection chamber 54.

[Problems to be Solved by the Invention] However, in the conventional device, an exhaust outlet 53 that also serves as a connection for the suction hose 51 is required on the exhaust side of the main body case 50, and when the vacuum cleaner is used, there is no need for centralized exhaust. As a result, the exhaust noise becomes louder,
Furthermore, when exterminating pests such as mites, it takes time and effort to set up a long suction hose 51, and the main body case 5
The suction hose 51 attached to the outside may bend or hang down, making the main body case 50 unstable. Also, since the exhaust flow circulates through the long suction hose 51, the dust collection chamber 54 may become heated. There were problems such as poor effectiveness and long heating time.

This invention was made in view of the problems of the prior art, and its purpose is to utilize the space in the lid of the dust collection chamber to direct the exhaust flow of an electric blower to a vacuum cleaner. By enabling circulation within the main unit, the dust mites and other pests can be efficiently and reliably killed using only the vacuum cleaner itself, without reducing the dust collection capacity of the dust collection chamber, allowing for complete extermination. The aim is to provide a vacuum cleaner with a high level of functionality.

[Means for Solving the Problems] In order to achieve the above object, the vacuum cleaner according to the present invention includes a dust collection chamber in which a filter is housed, and an electric blower connected to the dust collection chamber in the vacuum cleaner main body. and a blower storage chamber having an exhaust port,
A lid body is provided with an opening for disposing of dust on the upper surface of the dust collection chamber, and a lid body is formed to cover the opening so as to freely open and close and form a suction port communicating with the dust collection chamber; In a vacuum cleaner having a shutter plate that can be freely covered, the lid body is provided with a hose connection tube to which a suction hose is detachably connected, and the suction port is connected to the exhaust side of the electric blower when the suction port is closed by the shutter plate. The invention is characterized in that an on switch is provided, which communicates with the hose connection tube to form a ventilation path for circulating exhaust flow into the dust collection chamber, and which turns on power supply to the electric blower when the shutter plate comes into contact with it. , is a thing.

[Function] During cleaning, dust and pests such as mites are sucked into the dust collection chamber by the suction hose connected to the suction port.

After cleaning is completed, the on switch is turned on by closing the suction port with the shutter plate. When the electric blower is operated, the exhaust side of the electric blower is in communication with the hose connection pipe, so the negative pressure in the dust collection chamber causes the exhaust flow of the electric blower to flow through the ventilation path of the lid on the top of the dust collection chamber. It is guided to the dust collection chamber and circulated, and the exhaust heat from the electric blower turns it into hot air, which heats the dust collection chamber to 50℃.
Heat to a higher temperature to kill pests such as mites.

Since the ventilation passage is provided on the lid on the upper surface of the dust collection chamber, it is not necessary to reduce the capacity of the dust collection chamber due to the formation of the ventilation passage.

Furthermore, unless the shutter plate closes the suction port, the on switch cannot be turned on, so pests such as mites cannot be exterminated.

[Example] An example will be described below with reference to FIGS. 1 to 6.

In the figure, 1 is the main body case of the vacuum cleaner,
It consists of a main body upper case 1a and a main body lower case 1b, and the front part has a dust collection chamber 4 with a top opening 3 that can be opened and closed with a lid 2, and the rear part communicates with the dust collection chamber 4 and has an exhaust gas on the rear wall. Each of the air blower storage chambers 6 is provided with a blower storage chamber 6 having an opening 5 therein.

7 is an electric blower stored in the blower storage chamber 6, and the front fan case 7a is connected to an annular shock absorber 8.
through the upper support rib 9 of the main body upper case 1a.
The intake side 11 and the exhaust side 1 are sandwiched between the lower support ribs 10 of the main body lower case 1b.
It is fixed with a seal between the two.

Reference numeral 13 denotes a box-shaped filter having air permeability and shape-retaining properties, which is housed in the dust collection chamber 4 in a manner that can be inserted and removed from the upper surface opening 3; 14, which is housed in the box-shaped filter 13 in a manner that can be inserted and removed at will. The paper bag filter 14 is made of an air-permeable paper bag that does not allow pests such as mites to pass through. 15 is a holding frame for the opening plate 14a of the paper bag filter 14, and 16 is a clamp body for engaging the opening plate 14a.The holding frame 15 is placed on the opening edge of the box-shaped filter 13.

Furthermore, the lid body 2 has a double wall structure consisting of an outer cover 17 and a back cover 18, and its rear portion is pivoted to the main body upper case 1a in a state where it is always biased in the opening direction by a normally open biasing spring 19. At the same time, the front portion is locked by a clamp body 20 provided on the main body lower case 1b, thereby closing the upper surface opening 3.

21 is provided on the lid 2, and a suction hose 22
A suction hole 23 is formed in the outer cover 17 at a suction port for connecting the hose to a hose connection tube 24 disposed between the outer cover 17 and the back cover 18 below the hole 23. It is composed of a sliding shutter plate 25 that opens and closes the upper part of the connecting tube 24, and a mouth plate pressing gasket 26 located at the lower part of the hose connecting tube 24 is connected to the mouth plate 14.
It is designed to be brought into airtight pressure contact with a.

Reference numeral 27 denotes a ventilation passage provided in the vacuum cleaner body for circulating the exhaust flow of the electric blower 7 to the dust collection chamber 4, and is composed of a lid side ventilation passage 28 and a main body side ventilation passage 29. The lid side ventilation passage 28 is disposed between the outer cover 17 and the back lid 18, and has one end communicating with an exhaust outlet 30 opened on the side of the hose connection tube 24, and the other end communicating with the main body case 1.
Exhaust air inlet 3 protruding from the lid side facing surface 31 to
It has become 2. The exhaust outlet 30 is closed when the connecting pipe 22a of the suction hose 22 is inserted into the hose connecting tube 24, and the connecting pipe 22a is closed.
When a is not inserted, it is open.

Further, the main body side ventilation passage 29 is provided in the main body case 1 from the exhaust side 12 of the electric blower 7 to pass through the upper support rib 9, and has a main body side facing surface facing the exhaust inlet 32. An exhaust supply port 34 is opened at 33. Reference numeral 35 denotes a seal gasket attached to the exhaust inlet 32, which brings the exhaust inlet 32 and the exhaust supply port 34 into close contact with each other in airtight communication when the lid body 2 is closed.

36 is the suction port 2 of the lid side ventilation passage 28
1, the temperature sensing switch 36 has a reset button 37 protruding outward from the outer cover 17 near the suction port 21. The sensing switch 36 is turned on when the reset button 37 is pressed, and the temperature of the exhaust flow passing through the lid-side ventilation passage 28 is 50° C. or higher, which is the temperature at which pests such as mites die, and when cleaning It is configured to turn off when the sensing section 36a senses that the set temperature of 65° C. is reached, which is a temperature that does not cause thermal effects such as thermal deformation on the synthetic resin that makes up the machine body.

Although the temperature sensing switch 36 is provided in the lid-side ventilation passage 28 in this embodiment, it may also be attached to the side wall of the dust collection chamber 4. In this case, the reset button may be made to protrude from the main body lower case 1b.

38 is the suction port 21 of the outer cover 17
A limit switch is installed on the back side facing the mouth edge of the hose connecting tube 2.
4. When the upper part is closed, the tip of the shutter plate 25 comes into contact and turns on the limit switch 38,
The electric blower 7 is connected via the temperature sensing switch 36.
It supplies power to the

Further, in the electric circuit diagram shown in FIG. 6, 39 is a control circuit section, and 40 is a hand operation section mounted on the hand pipe of the suction hose 22.

When cleaning, as shown in FIG. 4, the shutter plate 25 is opened and the connecting pipe 22a of the suction hose 22 is inserted into the hose connecting tube 24. In this state, the exhaust outlet 30 of the lid side ventilation passage 28 is connected to the connecting pipe 22a.
Therefore, the exhaust flow from the electric blower 7 does not circulate to the dust collection chamber 4, but is discharged from the exhaust port 5, and therefore, pests such as mites sucked in together with dust from the suction hose 22 enter the dust collection chamber 4. It is stored in the paper bag filter 14.

Next, after cleaning is completed, the shutter plate 25 is closed as shown in FIG. 1 to exterminate pests such as mites.
This closing of the shutter plate 25 turns on the limit switch 38, and then when the reset button 37 is pressed, the temperature sensing switch 36 turns on, power is supplied to the electric blower 7, and the electric blower 7 rotates.
At this time, since the suction port 21 is closed by the shutter plate 25, the inside of the dust collection chamber 4 becomes a negative pressure, and the exhaust flow from the electric blower 7 flows from the exhaust supply port 34 of the main body side ventilation path 29 to the lid side ventilation path 28. The exhaust air is sucked and supplied into the dust collection chamber 4 through the air blower 7, and by repeating this process, the exhaust air is circulated, and the exhaust heat from the electric blower 7 turns into hot air, which heats the dust collection chamber 4. When pests such as mites stored in the filter 14 are killed and the exhaust gas temperature reaches 65° C., the temperature sensing switch 36 is turned off and the electric blower 7 is stopped.

[Effects of the Invention] The vacuum cleaner according to the present invention collects pests such as mites sucked into the dust collection chamber by the suction hose during cleaning, and uses exhaust heat generated by driving an electric blower after cleaning to collect dust. By circulating the dust inside the room without using a suction hose, the temperature inside the dust collection chamber is increased and pests such as mites inside the dust collection chamber are killed, so there are problems when using a suction hose like in the conventional example. are all resolved.

Moreover, in particular, the lid body provided on the upper surface of the dust collection chamber is provided with a ventilation passage that communicates the exhaust side of the electric blower with the hose connection tube and circulates the exhaust flow into the dust collection chamber by closing the shutter plate. As a result, the hot air is effectively circulated by the upward movement of the heated exhaust flow, and the circulation path for the exhaust flow is short, so that the dust collection chamber is heated in a short time, efficiently and efficiently. It is possible to reliably kill pests such as mites, and since the ventilation passage is located in the lid, the ventilation passage does not get in the way when discharging the dust accumulated in the dust collection chamber, and the dust collection chamber is opened at the top. Because of this, the accumulated dust can be easily discharged. Furthermore, the circulation path for the exhaust heat for exterminating pests such as mites can be easily formed by simply closing the shutter plate.

Moreover, when the suction port is blocked by the shutter plate, the shutter plate comes into contact with the on-switch, so preparations for power supply to the electric blower are made in advance, and part of the operation for exterminating pests such as ticks is automated. obtain. Furthermore, since preparations for power supply to the electric blower are not made unless the on-switch is touched, operation to exterminate pests such as ticks is not performed with the shutter plate open, making it safe.

[Brief explanation of drawings]

FIG. 1 is a sectional front view of essential parts of an embodiment of the vacuum cleaner according to the present invention, FIG. 2 is a perspective view of the same, FIG. 3 is a sectional plan view of the essential parts, and FIG. FIG. 5 is a perspective view of essential parts with the lid open, FIG. 6 is an electric circuit diagram, and FIG. 7 is an explanatory sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1...Main body case, 2...Lid, 3...Top opening of dust collection chamber, 4...Dust collection chamber, 5...Exhaust port, 6...
...Blower storage room, 7...Electric blower, 14...Filter, 21...Suction port, 22...Suction hose, 24...Hose connection tube, 25...Shutter plate, 28...Ventilation duct, 38... …On switch.

Claims (1)

[Claims] 1 A dust collection chamber that stores a filter and a blower storage chamber that communicates with the dust collection chamber, stores an electric blower, and has an exhaust port are arranged in the vacuum cleaner body, and dust is collected on the upper surface of the dust collection chamber. The lid body is provided with a disposal opening and has a suction port that freely opens and closes the opening and is connected to the dust collection chamber, and a shutter plate that is provided on the lid and covers the suction port that can be opened and closed. In the vacuum cleaner, the lid body is provided with a hose connection tube to which a suction hose is detachably connected, and the exhaust side of the electric blower and the hose connection tube are communicated when the suction port is closed by the shutter plate. The vacuum cleaner is characterized in that the vacuum cleaner is provided with an on switch which forms a ventilation path for circulating an exhaust flow into the dust collection chamber and turns on power supply to the electric blower when the shutter plate comes into contact with the shutter plate.