JPH0455698B2 - - Google Patents

Description

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

[Conventional technology]

Pests such as dust mites that are inhaled 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 will breed inside the dust collection chamber, so In order to prevent it, it is necessary to kill it and completely exterminate it.
Pests such as mites are said to be killed by applying hot air at 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 increase 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 thereof is as shown in FIG.
The hot exhaust flow of 2 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.

[Problem to be solved by the invention]

However, in the conventional type, an exhaust outlet 53 which is also used for connecting the suction hose 51 is required on the exhaust side of the main body case 50, and exhaust noise becomes louder because the exhaust is concentrated when the vacuum cleaner is used.
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 divert 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 present invention also aims to provide a vacuum cleaner in which an electric blower can be automatically stopped by using a temperature sensor for controlling the exhaust flow.

[Means for solving problems]

In order to achieve the above object, the vacuum cleaner of the present invention includes a vacuum cleaner main body case that has an electric blower built in at the rear and a dust collection chamber formed at the front, and a vacuum cleaner body case that covers the opening of the dust collection chamber so as to be openable and closable. The lid body is composed of an outer cover and a back cover, and is provided with a suction port that is opened and closed by a shutter plate, and between the outer cover and the back cover, one end is connected to the suction port. A lid-side ventilation passage is provided with each end opening toward the main body case, and the main body case is equipped with an exhaust supply port that connects the lid-side ventilation passage to the exhaust side of the electric blower. With the suction port closed and the dust collection chamber closed with the lid, exhaust air from the electric blower is removed by the exhaust side of the electric blower, the lid side ventilation path, and the dust collection chamber. The electric blower is circulated in the dust collection chamber, and when the temperature of the exhaust flow circulating through the exhaust side of the electric blower, the lid side ventilation path, and the dust collection chamber reaches a predetermined temperature as determined by a temperature sensor. It is characterized by stopping.

[Effect]

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, when the suction port is closed with a shutter plate and the power supply to the electric blower is turned on, the exhaust flow of the electric blower is reduced due to the negative pressure in the dust collection chamber, since the ventilation passage on the lid side communicates with the suction port. is guided from the exhaust supply port to the dust collection chamber via the ventilation path on the lid side and circulates, and the exhaust heat from the electric blower turns it into hot air, which blows 50% of the air inside the dust collection chamber.
Heating above ℃ will kill pests such as mites.

Since the lid side ventilation passage is installed between the outer cover and the back cover that constitute the lid of the dust collection chamber, the ventilation passage does not protrude into the dust collection chamber and reduce the dust collection capacity. do not have.

Furthermore, when the exhaust flow reaches a predetermined temperature, the electric blower is automatically stopped by a temperature sensor.

〔Example〕

Embodiments 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 a main body side facing surface 33 facing the exhaust inlet 32. An exhaust gas supply port 34 is opened to the air. 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.

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 24, and the shutter plate 25 is
When the upper part is closed, the tip of the shutter plate 25 comes into contact and turns on the limit switch 38, which supplies power to the electric blower 7 via the temperature sensing switch 36.

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

When cleaning, the shutter plate 25 is opened as shown in FIG. 4, and the continuation pipe 22a of the suction hose 22 is inserted into the hose connection tube 24. In this state, the exhaust outlet 30 of the lid-side ventilation passage 28 is blocked by the connection 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 from the suction hose 22 along with dust are filtered through the paper bag filter in the dust collection chamber 4. 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 flow is circulated by repeating this process, and the exhaust heat from the electric blower 7 turns into hot air, which heats the dust collection chamber 4 and blows the paper bag at an exhaust temperature of 50°C or higher. 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.

〔Effect of the invention〕

The vacuum cleaner according to the present invention removes pests such as mites sucked into the dust collection chamber through the suction hose during cleaning by driving the electric blower with the suction port closed with the shutter plate after cleaning is completed. The heat generated by the exhaust gas is circulated into the dust collection chamber without using a suction hose to raise the temperature inside the dust collection chamber and kill insect pests such as mites inside the dust collection chamber.
Not only does it eliminate all of the problems associated with using a conventional suction hose, but it also eliminates the need for a lid that directs the exhaust flow from the electric blower to the suction port through the exhaust supply port inside the lid of the dust collection chamber. Since the ventilation passage on the body side is provided, the circulation passage for the exhaust heat only needs to be short, so the dust collection chamber is heated in a short time, and pests such as mites can be efficiently and reliably killed. Since it is installed between the outer cover and the back cover that make up the lid of the dust chamber, the ventilation passage does not protrude into the dust collection chamber and reduce the dust collection capacity. A large amount of dust can be collected without dust reduction, and the ventilation passage is not visible even when the lid is opened, so it has a good design.

Furthermore, since the electric blower is automatically stopped by the temperature sensor when the exhaust flow reaches a predetermined temperature, pests such as mites can be easily exterminated.

[Brief explanation of the drawing]

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. 1... Main body case, 2... Lid, 4... Dust collection chamber, 7...
Electric blower, 17...outer cover, 18...back cover, 21
... Suction port, 25... Shutter plate, 28... Lid side ventilation path, 34... Exhaust supply port, 36a... Sensing section.

Claims (1)

[Claims] 1 Consists of a vacuum cleaner body case that has a built-in electric blower in the rear and a dust collection chamber in the front, and a lid that covers the opening of the dust collection chamber so that it can be opened and closed, and the lid has an outer cover and a back cover. and a suction port opened and closed by a shutter plate, and between the outer cover and the back cover is a lid-side ventilation passage having one end opened to the suction port and the other end opened to the main body case side. The body case is equipped with an exhaust supply port that communicates the ventilation passage on the lid side with the exhaust side of the electric blower, the shutter plate closes the suction port, and the lid closes the air supply port. With the dust collection chamber closed, the exhaust air from the electric blower is circulated into the dust collection chamber by the exhaust side of the electric blower, the lid side ventilation path, and the dust collection chamber, and the temperature sensor The electric vacuum cleaner is characterized in that the electric blower is stopped when the temperature of the exhaust flow circulating through the exhaust side of the electric blower, the lid-side ventilation path, and the dust collection chamber reaches a predetermined temperature.