JPH02289215A - Electric cleaner - Google Patents

Abstract

PURPOSE:To annihilate noxious insects such as ticks, etc., in the dust collecting chamber without decreasing the dust collecting capacity of a dust collecting chamber by providing a cover-side ventilation path, which introduces the exhaust flow of an electric blower to a suction port part through an exhaust supply port, inside the cover of a dust collecting chamber, and circulating the exhaust heat, being generated by the driving of the electric blower, in the dust collecting chamber after cleaning finish. CONSTITUTION:In cleaning, dust and noxious insects such as ticks, etc., are sucked in by a suction hose 22 connected to a suction port part 21. When the suction port part 21 is closed by a shutter plate 25 after cleaning finish and power supply to an electric blower 7 is turned on, since a cover-side ventilation path 28 is communicating with the suction port part 21, the exhaust flow of the electric blower 7 is introduced by the negative pressure of the dust collecting chamber 4 through the cover-side ventilation path 28 from an exhaust supply port 34, and circulates there, and becomes hot currents by the exhaust heat of the electric blower 7, and heats the inside of the blower to 50 deg.C or more, thereby annihilating noxious insects such as ticks, etc. And since the cover-side ventilation path 28 is equipped between an outer cover 12 constituting the cover 2 of the dust collecting chamber and a rear cover 18, there is no necessity to decrease the dust collecting capacity.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This 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 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 be killed by applying hot air at about 50 degrees Celsius. For example, in JP-A-62, there is a system 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. It is publicly known as shown in Japanese Patent No.-127026. The outline thereof is as shown in FIG.
2 to the dust collection chamber 5 via the suction hose 51.
4 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, and when exterminating pests such as mites, it takes time and effort to set up a long suction hose 51. Also, the suction hose 51 attached to the outside of the main body case 50 may bend or hang, causing the main body case 50 to In addition, since the exhaust flow is circulated through the long suction hose 51, the heating effect of the dust collecting chamber 54 becomes poor and the heating time becomes long.

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 the Problems] In order to achieve the above object, a vacuum cleaner according to 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 It consists of a lid body that covers the opening of the dust chamber so that it can be opened and closed, and the lid body is made up of an outer cover and a back cover, and has a suction port that can be opened and closed by a shutter plate, and has a space between the outer cover and the back cover. is equipped with a lid-side ventilation passage having one end opened to the suction port and the other end opened to the main body case side, and the main body case is equipped with an exhaust supply that connects the lid-side ventilation passage to the exhaust side of the electric blower. The electric blower is equipped with an opening and is characterized in that the electric blower is stopped when the temperature of the exhaust stream reaches a predetermined temperature using a temperature sensor.

[Operation: 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 shirt 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 into hot air that heats the inside of the dust collection chamber to over 50℃, killing insect 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.

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

[Embodiment] An embodiment will be described below with reference to FIGS. 1 to 6.

In the figure, 1 is the main body case of the vacuum cleaner, which consists of a main body upper case 1a and a main body lower case ib.The front part has a dust collection chamber 4 with a top opening 3 that can be opened and closed with a lid body 2, and the rear part has a dust collection chamber 4. Each of the air blower storage chambers 6 is provided with a blower storage chamber 6 communicating with the dust collection chamber 4 and having an exhaust port 5 bored in the rear wall.

7 is an electric blower stored in the blower storage chamber 6;
By sandwiching the front fan case 7a between the upper support rib 9 of the main body upper case 1a and the lower support rib IO of the main body lower case 1b via the annular buffer 8, the intake side 11 and the exhaust side 12 It is fixed with a seal between it.

Reference numeral 13 denotes a box-shaped filter 1 having breathability and shape retention, which is housed in the dust collection chamber 4 in a manner that can be inserted and removed from the upper surface opening 3.
Reference numeral 4 denotes a paper bag filter that is removably housed in the box-shaped filter 13, and the paper bag filter 14 is made of an air-permeable paper bag that does not allow pests such as mites to pass through. Reference numeral 15 is a holding frame for the opening plate 14a of the paper bag filter 14, and reference numeral 16 is placed on the opening edge of the box-shaped filter 13 associated with the white plate 14a.

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 Ia 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.

Reference numeral 21 denotes a suction port provided in the lid 2 to which the suction hose 22 is connected, and a suction hole 23 is formed in the outer cover 17, and the outer cover 17 and the back cover 18 below the hole 23 are connected to each other.
It is composed of a hose connection tube 24 disposed between the hose connection tube 24 and a sliding shutter plate 25 that closes the upper part of the hose connection tube 24 so as to be openable and closable.
A mouth plate pressing gasket 26 located at the lower part of 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 closed to the side of the hose connection tube 24, and the other end communicating with the exhaust outlet 30 that is disposed between the outer cover 17 and the back cover 18. Exhaust inlet 3 protruding from the lid side facing surface 31 to 1
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 is opened when the connecting pipe 22a is not inserted.

Furthermore, the main body side ventilation passage 29 is located inside the main body case 1.
An exhaust gas supply port 34 is provided from the exhaust side 12 of the electric blower 7 through the upper support rib 9, and is opened on the main body side facing surface 33 facing the exhaust gas inflow port 32. Further, 35 is a seal gasket attached to the exhaust inlet 32, and when the lid body 2 is in the closed state, the exhaust inlet 32 is closed.
2 and the exhaust supply port 34 are brought into close contact and communicated airtightly.

Reference numeral 36 denotes a temperature sensing switch provided near the suction port 21 on the second day of the lid side ventilation passage, and the sensing switch 36 is configured to press its reset button 37 from the outer cover 17 near the suction port 21 to the outside of the vacuum cleaner. It stands out. The detection switch 36 is turned on by pressing the reset button 37, and the temperature of the exhaust flow passing through the lid-side ventilation passage 28 is 50° C., which is the temperature at which pests such as mites are killed.
As described above, the vacuum cleaner is configured to turn off when the sensor 36a senses that the set temperature has reached 65° C., which is a temperature that does not cause thermal effects such as thermal deformation on the synthetic resin constituting the vacuum cleaner body.

38 is a limit switch attached to the back surface of the outer cover 17 facing the mouth edge of the suction port 21, and when the shutter plate 25 closes the upper part of the hose connection tube 24, the tip of the shutter plate 25 hits the limit switch. When the limit switch 38 comes in contact with the temperature sensor 38, the limit switch 38 is turned on, and power is supplied to the electric blower 7 via the temperature sensing switch 36.

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 vibrator of the suction hose 22.

When cleaning, the shutter plate 25 is opened as shown in FIG. 4, and the connection pipe 22a of the suction hose 22 is
However, in this state, the exhaust outlet 30 of the lid-side ventilation passage 28 is blocked by the connecting pipe 22a, so the exhaust flow from the electric blower 417 does not circulate to the dust collection chamber 4, but is discharged from the exhaust port 5. Therefore, pests such as mites sucked together with dust from the suction hose 22 are stored in the dust collection chamber 40 and 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.

Due to the closure of this shutter plate 25, the limit switch 3
8 is turned on, and then the reset button 37 is pressed, the temperature sensing switch 36 is turned 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 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 body 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 sound temperature of 50°C or higher. When pests such as mites stored in the filter 14 are killed and the exhaust sound 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 removes pests such as mites that are sucked into the dust collection chamber by the suction hose during cleaning. Since the temperature inside the dust collection chamber is increased to kill pests such as mites in the dust collection chamber by circulating the dust without using a suction hose, all problems associated with using a suction hose as in the conventional case are solved. In addition, a ventilation passage on the lid side that guides the exhaust flow from the electric blower to the suction port via the exhaust supply port is provided inside the lid of the dust collection chamber, so the circulation path for the exhaust heat can be shortened. As a result, the dust collection chamber is heated in a short time, efficiently and reliably killing pests such as mites, and the ventilation passage on the lid side is installed between the outer cover and the back cover that make up the lid of the dust collection chamber. Therefore, the ventilation passage does not protrude into the dust collection chamber and reduce the dust collection capacity, and a large amount of dust can be collected without reducing the dust collection capacity of the dust collection chamber, and even when the lid is opened. Since the ventilation passage is not visible from the outside, it is also good in terms of 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 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. 1... Main body case, 2... Lid body, 4... Dust collection chamber,
7...Electric blower, 17...Outer cover 18...
Back cover, 21... Suction port, 25... Shutter plate,
2nd...Lid side ventilation duct, 34...Exhaust supply port, 36
a... Sensing part. Applicant Sanyo Electric Co., Ltd. Agent Patent attorney Art supplies Mikio Figure 6 Figure 77

Claims (1)

[Claims] It consists of a vacuum cleaner body case that has an electric blower built in at the rear and a dust collection chamber formed at 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, a back lid, and a lid. and a suction port which is opened and closed by a shutter plate, and a lid body side ventilation passage having one end opened to the suction port and the other end opened to the main body case side between the outer cover and the back cover. The main 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, and the electric blower is stopped when the temperature of the exhaust flow reaches a predetermined temperature by a temperature sensor. A vacuum cleaner characterized by: