JPH0582207B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a vacuum cleaner designed to kill harmful microorganisms such as mites trapped in a dust collection chamber.

(B) Conventional technology Harmful microorganisms such as mites that are captured along with dust when cleaning a room, if left untreated, may breed in the dust collection chamber and escape from the vacuum cleaner body. It is necessary to eliminate it completely.

Therefore, Japanese Patent Publication No. 64-7774 discloses that the tip of the suction hose connected to the suction port of the dust collection chamber of the vacuum cleaner body is connected to the connection port formed on the exhaust side of the electric blower inside the main body. The exhaust flow from the electric blower is circulated through the suction hose to the dust collection chamber, and the temperature inside the dust collection chamber is heated to 50℃ or higher, which is the killing temperature for harmful microorganisms such as mites, thereby killing harmful microorganisms. A vacuum cleaner is shown. Here, in this prior art, in order to prevent the vacuum cleaner body from being deformed or burned out due to the temperature inside the dust collection chamber rising as it is, when the exhaust flow reaches a predetermined temperature higher than the death temperature, A temperature-sensitive switch means for stopping the operation of the electric blower is built into the vacuum cleaner body.

Therefore, in the prior art, the vacuum cleaner itself is limited to having a mite extermination mechanism, which increases manufacturing costs, and the long suction hose is also used for circulating the exhaust flow, which eliminates mites, etc. During microbial extermination operation, the suction hose bends or hangs down, making the vacuum cleaner unstable.Also, since the exhaust air circulates through the long suction hose, the heating efficiency of the dust collection chamber decreases, causing overheating. There is a disadvantage that the time is longer and the temperature difference between the suction port and the connection port becomes large, and when trying to maintain the temperature inside the dust collection chamber at the death temperature, the temperature on the exhaust side of the electric blower becomes considerably high.

(c) Problems to be Solved by the Invention The present invention uses an exhaust circulation pipe body with a simple configuration to efficiently heat the dust collection chamber and collect the dust without adding a complicated mechanism to the vacuum cleaner body. The purpose of the present invention is to provide a vacuum cleaner that can reliably kill harmful microorganisms such as mites trapped in a dust chamber in a short period of time.

(d) Means for Solving the Problems The present invention provides a vacuum cleaner body that incorporates an electric blower and has a dust collection chamber formed on the intake side of the electric blower, and a vacuum cleaner body that communicates with the dust collection chamber. a suction port formed therein and to which a suction hose is detachably connected; a remote control terminal provided at the suction port and electrically connected to a switch of the suction hose; and a remote control terminal that communicates with the electric blower exhaust side of the vacuum cleaner body. an exhaust gas circulation pipe body, one end of which is removably connected to the suction port in place of the suction hose, and the other end of which is removably connected to the exhaust gas outflow port; It is provided on the pipe body, and is electrically connected to the remote control terminal by connecting the exhaust circulation pipe body to the suction port, and when operated, drives the electric blower to control the exhaust flow of the electric blower circulating inside the exhaust circulation pipe body. The present invention is characterized by comprising a temperature-sensitive switch means for stopping the electric blower when the temperature reaches a predetermined temperature.

(e) Effect During cleaning operation, harmful microorganisms such as dust mites are sucked into the dust collection chamber and captured along with the dust.

During microbial extermination operation after cleaning, the suction hose is removed, both ends of the exhaust circulation pipe body are connected to the suction inlet and exhaust outlet of the cleaner body, and the electric blower is driven by operating the temperature-sensitive switch means. The exhaust flow of the electric blower is guided from the exhaust outlet through the exhaust circulation pipe body into the dust collection chamber, and is further sucked into the electric blower and circulated, heated by the exhaust heat of the electric blower and heats the inside of the dust collection chamber. When the temperature inside the dust collection chamber exceeds the temperature at which harmful microorganisms are killed, the temperature-sensitive switch means is activated to stop the electric blower.

The temperature-sensitive switch means is provided on the exhaust circulation pipe body,
Since it is electrically connected to the remote control terminal, microorganism extermination operation can be performed simply by connecting the exhaust circulation pipe body to the vacuum cleaner body without requiring any special configuration of the vacuum cleaner body. Also,
The exhaust circulation pipe body only needs to be long enough to connect the suction port and exhaust outlet of the vacuum cleaner body, so it can be formed shorter than the suction hose, and the circulation path of the exhaust flow can be shortened. This can improve the heating efficiency of the dust collection chamber.

(F) Example Hereinafter, the vacuum cleaner of the present invention will be explained based on FIGS. 1 to 8.

1 is a vacuum cleaner body of the vacuum cleaner of the present invention; 2 is a main body case of the vacuum cleaner main body 1, which is composed of a main body upper case 3 and a main body lower case 4; the front part has an upper surface that can be opened and closed with a dust collection lid 5; An open dust collection chamber 6 is connected to the dust collection chamber 6 through a vent 7 at the rear, and a blower storage chamber 9 is provided with an exhaust port 8 in the rear wall, and a cord reel storage for storing a cord reel 10. Each chamber 11 is provided, and the front wall of the dust collection chamber 6 is provided with a suction port 12 for connecting a suction hose.

Reference numeral 13 denotes an electric blower stored in the blower storage chamber 9, and the front fan case 13a is held and mounted with the annular shock absorber 14 facing the air intake side 1.
5 and the exhaust side 16, and the intake side 1
5 is in airtight communication with the dust collection chamber 6.

Reference numeral 17 denotes a paper bag filter that is removably housed in the dust collection chamber 6. The paper bag filter 17 is made of a breathable paper bag that does not pass harmful microorganisms such as mites, and its mouth plate 17a is connected to the suction port. 12, and is mounted in the dust collection chamber 6 using a mouth plate fixture 18.

Reference numeral 19 denotes a cleaning small parts storage area formed at the right rear part of the main body upper case 3 located above the exhaust passage between the electric blower 13 and the exhaust port 8, and is equipped with a cover body 20 that can be opened and closed. . In the small parts storage section 19, a suction tool holding tube 22 for vertically storing and holding a narrow mouth suction tool 21 is formed facing downward toward the exhaust passage, and the suction tool holding tube 22 is directed downward toward the exhaust passage. It communicates with the exhaust side 16 of the electric blower 13 through an exhaust gas introduction hole 23 formed in the wall of the electric blower 13 . The upper end opening portion of the suction tool holding cylinder 22 into which the narrow-mouth suction tool 21 is inserted and removed serves as an exhaust outlet 24 communicating with the exhaust side 16.

Furthermore, the lid body 20 has a locking pawl 25 for engaging with a locking hole in the upper case 3 of the main body to maintain the closed state.

Reference numeral 26 denotes an exhaust circulation pipe body that communicates the suction port 12 and the exhaust outlet 24 at the shortest distance, and connects the exhaust outlet with a substantially L-shaped suction side connection tube 27 inserted and connected to the suction port 12 at one end. At the other end is a substantially L-shaped exhaust side connecting tube 28 which is inserted into and connected to 24.
These connecting tubes 27 and 28 are connected by a flexible hose 29.

Furthermore, a bimetallic temperature switch 30 is provided on the suction side connecting tube 27 and serves as a temperature-sensitive switch means for detecting the temperature of the exhaust flow circulating within the circulation pipe body 26, and the temperature sensing portion 30a is located on the inner surface of the connecting tube 27. The operating portion 30b is located within the switch button 32, which is exposed to the outside and is biased upward by a spring 31. When the switch button 32 is pressed, the temperature switch 30 is turned on and rotates the electric blower 13, so that the exhaust flow temperature reaches a predetermined temperature (60°C) that is 50°C or higher, which is the temperature at which mites die. When this happens, the electric blower 13 is turned off and the operation of the electric blower 13 is stopped. Further, 33 is a connection terminal for connecting the temperature switch 30 to a remote control terminal 34 of the suction port 12.

Further, the exhaust side connecting tube 28 has an inner diameter larger than the outer circumferential diameter of the narrow mouth suction tool 21 on its tip opening side,
A fitting method in which a loose fitting inner wall surface 36 is formed with a gap 35 between the narrow mouth suction tool 21 and is loosely fitted thereto, and the narrow mouth suction tool 21 is fitted and connected to a portion deeper than the loose fitting inner wall surface 36. The inner wall surface 37 is formed into steps. The locking pawl 25 of the lid body 20 engages with the outer circumferential portion of the exhaust side connecting tube 28 when the exhaust outlet 24 is connected to the exhaust outlet 24, thereby maintaining the connection state to the exhaust outlet 24. A recess 38 is formed.

Furthermore, FIG. 8 is an electric circuit diagram of the vacuum cleaner of the present invention, in which 39 is a remote control relay, 34 is the above-mentioned remote control terminal, and this remote control terminal 3
4 is selectively connected to a hand switch 40 located on the hand control section of the suction hose during cleaning operation, and to the bimetallic temperature switch 30 during tick extermination operation.

During cleaning operation, when a suction hose (not shown) with a floor suction device attached is connected to the suction port 12 and the hand switch 40 is turned on, the electric blower 13 is activated to remove dust and harmful substances such as dust mites. Microorganisms are sucked into the paper bag filter 17 in the dust collection chamber 6 and captured.

Next, after the cleaning is completed, a mite extermination operation is performed to exterminate harmful microorganisms such as mites. During this mite extermination operation, the suction side connecting tube 27 and the exhaust side connecting tube 28 of the exhaust circulation pipe body 26 are connected to the suction port 12 and the exhaust outlet port 24 of the vacuum cleaner body 1 instead of the suction hose, and the lid body 20 The locking claw 25 is inserted into the engagement recess 2.
8 to prevent it from coming off. At this time, the narrow mouth suction tool 21 may or may not be stored in the suction tool holding cylinder 22. When the switch button 32 is pressed in this state, the bimetallic temperature switch 30 is turned on and the electric blower 13 is driven.
The exhaust flow of the electric blower 13 enters the suction device holding cylinder 22 from the exhaust side 16, passes through the inside of the narrow-mouth suction device 21, between the narrow-mouth suction device 21 and the suction device holding cylinder 22, and through the gap 35, and then reaches the exhaust outlet. 24, passes through the exhaust circulation pipe body 26, is guided from the suction port 12 to the paper bag filter 17 in the dust collection chamber 6, is then sucked into the electric blower 13, circulates, is heated by the exhaust heat of the electric blower 13, and is collected. After the inside of the dust chamber 6 is heated and the temperature inside the dust collection chamber 6 reaches 50°C or higher, which is the killing temperature for harmful microorganisms such as mites, the exhaust circulation pipe body 26
When the temperature of the exhaust gas circulating inside reaches a predetermined temperature (60° C.), the bimetallic temperature switch 30 is turned off and the operation of the electric blower 13 is stopped, and in this state, the harmful microorganisms are killed.

The bimetallic temperature switch 30 is provided in the suction side connecting tube 27 of the exhaust circulation pipe body 26,
The above-mentioned mite extermination operation can be performed simply by attaching the exhaust circulation pipe body 26 to the vacuum cleaner body 1, and since the exhaust circulation pipe body 26 with a short overall length is used during the mite extermination operation without using a long suction hose, the suction port 1
The temperature difference between the two parts and the exhaust outlet 24 part is reduced, so the temperature on the exhaust side 16 of the electric blower 13 does not rise abnormally, and the heating efficiency in the dust collection chamber 6 is increased, so that dust mites can be exterminated in a short time. You can finish driving.

Furthermore, since the suction side connection tube 27 and the exhaust side connection tube 28 are approximately L-shaped, the overall length of the exhaust circulation pipe body 26 is shortened, and the circulation path of the exhaust flow is further shortened. Heating efficiency becomes even higher.

Furthermore, the exhaust circulation pipe body 26 can be used instead of a suction hose for simple cleaning. At this time, the narrow-mouth suction device 21 may be used by fitting into the fitting inner wall surface 37 of the exhaust side connecting tube 28, and since the suction side connecting tube 27 is approximately L-shaped, the exhaust circulation pipe can be used. Even if the body 26 is pulled, a stiffness acts between the suction side connecting cylinder 27 and the suction port 12, that is, the suction side connecting cylinder 27 and the suction port 12
A downward force acts on the outer part and an upward force acts on the inner part of the suction port 12, so that it does not easily come off.

(G) Effects of the Invention According to the present invention, by using an exhaust circulation pipe having a temperature-sensitive switch means, the dust collection chamber can be efficiently heated without adding a complicated mechanism to the vacuum cleaner body, and the dust collection Harmful microorganisms such as mites trapped in the room can be killed and exterminated. In addition, the exhaust circulation pipe body can be formed shorter than the suction hose, which shortens the circulation path of the exhaust flow and improves the heating efficiency of the dust collection chamber, ensuring that harmful microorganisms are removed in a short time. It has the effect of being able to exterminate insects.

[Brief explanation of the drawing]

The drawings all relate to embodiments of the vacuum cleaner of the present invention; FIG. 1 is a longitudinal side view of the vacuum cleaner in a mite extermination state, FIG. 2 is a side view of the same, and FIG. 3 is a detailed sectional view of the main part of the suction port. Fig. 4 is a detailed cross-sectional view of the main parts of the cleaning accessory storage section, Fig. 5 is a plan view of the main body of the vacuum cleaner with the upper case and dust collection lid removed, and Fig. 6 is a perspective view of the main body of the vacuum cleaner. , FIG. 7 is a perspective view of the exhaust circulation pipe body, and FIG. 8 is an electric circuit diagram. 1...Vacuum cleaner body, 6...Dust collection chamber, 12...Suction port, 13...Electric blower, 24...Exhaust outlet, 26...Exhaust side connection tube, 30...Bimetal temperature switch (sensor) warm switch means).

Claims (1)

[Claims] 1. A vacuum cleaner body with a built-in electric blower and a dust collection chamber formed on the intake side of the electric blower, and a suction chamber formed in the vacuum cleaner body so as to communicate with the dust collection chamber, to which a suction hose is detachably connected. a remote control terminal provided at the suction port and electrically connected to a switch of the suction hose; an exhaust outlet formed in communication with the electric blower exhaust side of the vacuum cleaner body; An exhaust circulation pipe body that is detachably connected to the suction port in place of the suction hose and whose other end is detachably connected to the exhaust outlet, and an exhaust circulation pipe provided on the exhaust circulation pipe body and connected to the suction port. The electric blower is electrically connected to the remote control terminal by the body connection, and the electric blower is operated by operation, and the electric blower is stopped when the temperature of the exhaust flow of the electric blower circulating inside the exhaust circulation pipe reaches a predetermined temperature. A vacuum cleaner characterized in that it is equipped with a temperature-sensitive switch means for controlling the temperature.