JPH02289213A - Electric cleaner - Google Patents

Abstract

PURPOSE:To annihilate noxious insects such as ticks, etc., efficiently and surely by equipping a ventilation path which circulates exhaust flow by making the exhaust side of an electric blower and the dust collecting chamber communicate with each other, and stopping the electric blower when the temperature of exhaust flow has become the specified temperature by a temperature sensor. CONSTITUTION:When a shutter plate 25 is closed after cleaning funish, a limit switch 38 is turned on. Thereafter, when a reset botton 37 is pressed, a temperature sensor 36 is turned on and current is supplied to an 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 a dust collecting chamber 4 becomes negative pressure, and the exhaust flow of the electric blower 7 is sucked and supplied into the dust collecting chamber 4 through a cover-side ventilation path 28 from exhaust supply port 34 of a main-body- side ventilation path 29. By this repeat, the exhaust flow circulates, and it becomes hot current by the heat exhausted from the electric blower 7 and heats the dust collecting chamber 7, and annihilate noxious insects such as ticks, etc., stored in a paper bag filter 14 at an exhaust flow temperature of 50 deg.C or more. And when the exhaust flow temperature becomes 65 deg.C, a temperature sensor switch 36 is turned off and the electric blower 7 stops.

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. Therefore, 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. 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.
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 above-mentioned problems of the conventional technology, and its purpose is to utilize the space above the blower storage chamber and the dust collection chamber to operate an electric blower. Allows the exhaust air to circulate within the vacuum cleaner body,
This makes it possible to efficiently and reliably kill dust mites and other pests using only the vacuum cleaner itself, without reducing the dust collection capacity of the dust collection chamber, and to achieve complete extermination. The present invention aims to provide a vacuum cleaner that can automatically stop an electric blower.

[Means for Solving the Problems] In order to achieve the above object, the vacuum cleaner of the present invention includes a dust collection chamber and an electric blower communicated with the dust collection chamber, housed in the vacuum cleaner body, and A vacuum cleaner is provided with a blower storage chamber having an exhaust port, and has a lid that can open and close the opening of the dust collection chamber, the lid having a suction port formed therein, and the suction port being in a closed state. A ventilation passage for communicating the exhaust side of the electric blower with the dust collection chamber and circulating the exhaust flow into the dust collection chamber is provided in the upper part of the blower storage chamber and the upper part of the dust collection chamber, and a temperature sensor is provided. According to the present invention, the electric blower is stopped when the temperature of the exhaust flow reaches a predetermined temperature.

[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, when the suction port is closed and power is turned on to the electric blower, the exhaust flow from the electric blower is retracted into the blower due to the negative pressure in the dust collection chamber, since the ventilation passage on the lid side communicates with the suction port. It is guided to the dust collection chamber through the ventilation passage in the upper part of the chamber and the upper part of the dust collection chamber and circulates, and the exhaust heat from the electric blower turns it into hot air, which heats the inside of the dust collection chamber to 50°C or more, killing dust mites, etc. kills pests.

Since the ventilation passage is installed at the upper part of the blower storage chamber and the upper part of the dust collection chamber, the high temperature exhaust flow from the upper part of the blower storage chamber is circulated and the dust collection chamber is expanded by the formation of the ventilation passage. There is no need to reduce the capacity. Furthermore, since a suction port is formed on the lid, the suction hose can be easily inserted or removed. Furthermore, when the exhaust flow reaches a predetermined temperature, the electric blower is automatically stopped by a temperature sensor.

[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 body, which consists of a main body upper case 1a and a main body lower case 1b.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 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 lb 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. 15 is a holding frame for the mouth plate 14a of the paper bag filter 14; 16 is a clamp body for engaging the 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 frontage 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 in a freely closing manner.
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 air from the electric blower 7 to the dust collection chamber 4, and is composed of a lid side ventilation passage 2 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
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 inside the main body case l,
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 in the vicinity of the suction port 21 of the lid side ventilation passage 28, and the temperature 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.
It is configured to turn off when the sensing section 36a senses that the set temperature has reached 65°C, which is higher than 65°C and which does not cause thermal effects such as thermal deformation on the synthetic resin constituting the vacuum cleaner body.

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

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 suction hose 220 hand vibrator.

When cleaning, the shutter plate 25 is opened as shown in FIG. 4, and the connection pipe 22a of the suction hose 22 is
4, but 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 7 does not circulate to the dust collection chamber 4, but is discharged from the exhaust port 5. Insects such as mites, which are sucked together with dust from the secondary suction hose 22, are stored in the paper bag filter 14 of the dust collection chamber 4.

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 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.

[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 of the problems associated with using a suction hose as in the conventional case are solved. In addition, in particular, the exhaust air circulation path is installed above the blower storage chamber and above the dust collection chamber, so that the high temperature exhaust flow in the upper part of the blower storage chamber is circulated, thereby achieving thermally efficient circulation. The dust collection chamber is heated in a short time, efficiently and reliably killing pests such as mites, and there is no need to reduce the capacity of the dust collection chamber due to the formation of the ventilation passage. Furthermore, since the suction port is formed on the lid, the suction hose can be easily inserted or removed, making the operation easy. 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. l...main case, 2...lid, 4...dust collection chamber,
5...Exhaust port, 6...Blower storage chamber, 7...Electric blower, 21...Suction port section, 28.29...Ventilation path, 36a...Temperature sensing section. Applicant Sanyo Electric Co., Ltd. Agent Patent attorney Art supplies Mikio Figure 6 Figure 7

Claims (1)

[Claims] A dust collection chamber and a blower storage chamber that communicates with the dust collection chamber, houses an electric blower, and has an exhaust port are disposed in a vacuum cleaner body, and a lid body covers the opening of the dust collection chamber so as to be openable and closable. In the vacuum cleaner, a suction port is formed in the lid body, and when the suction port is in a closed state, the exhaust side of the electric blower and the dust collection chamber are communicated with each other to provide an exhaust flow to the dust collection chamber. The electric blower is characterized in that a ventilation passage for circulation is provided in an upper part of the blower storage chamber and an upper part of the dust collection chamber, and the electric blower is stopped when the temperature of the exhaust flow reaches a predetermined temperature using a temperature sensor. Vacuum cleaner.