JPH0744290Y2 - Vacuum cleaner - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention kills harmful microorganisms such as mites in dust trapped in the dust collection chamber of the cleaner body from the suction port through the hose and the extension tube. Concerning vacuum cleaners.

(Prior Art) Conventionally, as an electric vacuum cleaner that kills harmful microorganisms such as mites in dust trapped in a dust collection chamber by hot hot air, for example, as described in Japanese Patent Publication No. 64-7774. There is known a structure in which an exhaust port, to which one end is connected to the suction port of the cleaner body, and the other end of which is connected, is formed in the cleaner body.

The conventional electric vacuum cleaner disclosed in JP-B-64-7774 discloses a method in which heated exhaust air discharged from an electric blower is circulated from a suction port to a dust collection chamber via a hose,
By generating hot air that circulates between the electric blower and the dust collecting chamber, the temperature inside the dust collecting chamber is raised and harmful microorganisms inside the dust collecting chamber are killed by heat.

Further, there is also known an electric vacuum cleaner having a structure in which another electric heat source attachment, which is not an accessory used for normal cleaning such as a hose, is detachably attachable to the suction port of the cleaner body. In this conventional vacuum cleaner, the suction hose for cleaning is removed from the suction port, the electric heat source attachment is connected to this suction port, and the warm air is blown from the electric heat source attachment into the dust collection chamber. By ejecting
The dust collection chamber is heated to kill harmful microorganisms.

(Problems to be solved by the invention) However, in the conventional electric vacuum cleaner described in Japanese Patent Publication No. Sho 64-7774, in order to kill harmful microorganisms, a hose is attached to the suction port and the exhaust port of the vacuum cleaner body. Since both ends have to be connected to each other, the original purpose of the electric vacuum cleaner cannot be cleaned while the harmful microorganisms are being killed by the hot air. On the other hand, even in the conventional vacuum cleaner using the above electric heat source attachment, in order to kill harmful microorganisms, instead of the suction hose at the suction port of the cleaner body, a dedicated heat source attachment was connected. It cannot be cleaned while the harmful microorganisms are being killed by the hot air because it must be put into a state. If cleaning and killing of harmful microorganisms have to be performed separately, it is troublesome and time-consuming.

The present invention solves these problems and prevents the temperature inside the dust collection chamber from rising excessively abnormally, while killing harmful microorganisms trapped in the dust collection chamber during cleaning by hot air. The purpose is to provide an electric vacuum cleaner capable of

Further, in this vacuum cleaner, the purpose is to always keep the temperature inside the dust collection chamber at a temperature at which harmful microorganisms can be killed, and to prevent the temperature inside the dust collection chamber from rising excessively abnormally. is there.

(Means for Solving the Problem) An electric vacuum cleaner according to claim 1, wherein a vacuum cleaner main body having an electric blower and a dust collection chamber communicating with an intake side of the electric blower therein, and the vacuum cleaner main body, A hose communicating with the dust collection chamber and having one end connected thereto, an extension pipe having one end connected to the other end of the hose, and a suction port body connected to the other end of the extension pipe. A heat source for generating heat, which is provided in any one of the hose, the extension pipe, and the suction port body and which is in communication with the suction air passage from the suction port body to the dust collection chamber; A conductive wire for supplying electric power from the main body of the machine to the heat generating source, and heat generating source control means for turning off the power supply to the heat generating source when the temperature in the dust collecting chamber exceeds a predetermined temperature. It was done.

The vacuum cleaner according to claim 2 is the vacuum cleaner according to claim 1, wherein the heat generation source control means has a temperature in the dust collection chamber of about
The power supply to the heat generation source is turned off when the temperature becomes around 60 ° C. or higher, and the power supply to the heat generation source is turned on when the temperature in the dust collection chamber becomes approximately 50 ° C. or lower.

(Operation) In the electric vacuum cleaner according to claim 1, the dust sucked together with the suction wind by the drive of the electric blower at the time of cleaning causes the dust of the cleaner main body to pass through the extension pipe and the hose from the suction port. In addition to being guided and trapped in the dust collection chamber, the heat generation source provided in any of the hose, extension tube, and suction port operates to create a suction air path from the suction port to the dust collection chamber. The heat generated by this heat source located in communication with each other is guided to the dust collection chamber through the suction air duct together with the suction wind, and is located at a position downstream of the heat generation source including the dust collection chamber in the suction air duct. The temperature rises, and harmful microorganisms such as mites in the dust trapped in the dust collection chamber are killed by heat. Also,
When the temperature inside the dust collection chamber exceeds a predetermined temperature by the heat generation source control means, the power supply to the heat generation source via the conductive wire is turned off. Damage to components in downstream positions is prevented.

The vacuum cleaner according to claim 2 is the vacuum cleaner according to claim 1, wherein when the temperature in the dust collection chamber rises to about 60 ° C. or higher, the heat generation source control means causes the heat generation source via the conductive wire. Power supply to the heat generation source is turned off, and when the temperature in the dust collection chamber drops below about 50 ° C, the heat generation source control means turns on the power supply to the heat generation source through the conductive wire. Therefore, the temperature inside the dust collection chamber is always maintained at a temperature that can kill harmful microorganisms such as mites, and the temperature inside the dust collection chamber is prevented from rising abnormally excessively. Damage to components in downstream positions is prevented.

(Embodiment) Hereinafter, a configuration of an embodiment of the vacuum cleaner of the present invention will be described with reference to the drawings.

In FIG. 3, 11 is a cleaner body, and this cleaner body 11
Inside, a partition chamber 13 having a communication port 12 defines a dust collection chamber 14 for collecting dust at the front,
The electric blower room 15 is partitioned and formed in the rear part. And
In the electric blower chamber 15, an electric blower 16 including a motor and a fan rotated by the motor is provided with a rubber support 17
The electric blower 16 has its intake side communicated with the dust collection chamber 14 through the communication port 12. Further, a cord reel device 18 shown in FIG. 4 is provided at a side position of the electric blower chamber 15 in the rear portion of the cleaner body 11. The cord reel device 18 is removably connected to an external AC power source and houses a power cord 19 for supplying electric power to the electric blower 16 and the like.

In addition, in FIG. 3, a cylindrical main body suction port 21 for communicating the dust collection chamber 14 to the outside is formed in the front surface of the cleaner main body 11. On the other hand, an exhaust port (not shown) is formed in the rear surface of the cleaner body 11 so that the exhaust side of the electric blower 16 communicates with the outside. Further, although the dust collection chamber 14 is opened upward, the rear end portion of the lid body 23 that closes the upper opening portion of the dust collection chamber 14 in an openable and closable manner is pivotally attached to the central portion of the top surface of the cleaner body 11. ing. Further, a dust collection bag 24, which is a main dust collection filter, is detachably mounted in the dust collection chamber 14, and the front opening of the dust collection bag 24 is air-tightly connected to the main body suction port 21. The dust bag 24 is attached and detached via the upper opening of the dust collection chamber 14. In addition, a partition wall covering the communication port 12
An auxiliary dust collecting filter 25 is attached to the front side of 13.

Further, on the rear portion of the upper surface of the cleaner body 11, an externally operable body switch 26 for turning on / off the electric blower 16 is provided. Further, a bimetal switch 27 is provided in the dust collection chamber 14, for example, on the lower surface of the lid 23, as a heat generation source control unit that senses the temperature in the dust collection chamber 14 and turns on / off according to the temperature. . This bimetal switch 27
The characteristics are set so that when it is in the ON state, it turns off when the ambient temperature becomes approximately 60 ° C or higher, and when it is in the OFF state, it turns on when the ambient temperature becomes approximately 50 ° C or lower.

On the other hand, in FIG. 2, reference numeral 31 denotes a hose which is an accessory necessary for normal cleaning, and the hose 31 includes a flexible bellows-shaped hose body 32 and one end of the hose body 32. Connection part 33 that is detachably inserted into the main body suction port 21 of the cleaner main body 11 and is connected to the hose main body 32
And a bent grip tube portion 34 which is provided at the other end portion and serves as a hand portion during cleaning.

Further, 36 is an extension tube which is an accessory required for normal cleaning, and one end of the extension tube 36 is detachably attached to the tip of the grip tube 34 or the other end of another extension tube 36. It is fitted and connected.

Further, 37 is a suction inlet for the floor, which is an accessory required for normal cleaning, and this suction inlet 37 has a suction opening (not shown) formed on the lower surface thereof. A joint pipe 38, the interior of which communicates with the opening, is pivotally attached to the rear portion. The joint pipe 38 is detachably fitted and connected to the tip of the grip pipe 34 or the other end of the extension pipe 36.

The hose 31, the extension pipe 36, and the suction port body 37 are
At the time of connection, the interiors communicate with each other, and as shown in Fig. 1,
A suction air passage 41 extending from the suction opening of the suction port body 37 to the dust collection chamber 14 of the cleaner body 11 is formed inside the hose 31, the extension pipe 36 and the suction port body 37 which communicate with each other.

Also, in particular, as shown in FIG. 1, the grip tube portion of the hose 31.
A box-shaped cover with an open lower surface on the outer upper surface of the base of 34
42 is fixedly attached by screws 43 or the like. Then, in the space 44 formed between the outer surface of the grip tube portion 34 and the cover 42, an electric heater 45 as a heat generation source and a hand switch 46 for turning on / off the electric heater 45 are built-in. Has been done. The hand switch 46 has an opening / closing member that projects outward from the upper surface of the cover 42 and can be operated externally. Also, the electric heater 45 is, for example, 500W
Approximately 1kW, which can generate heat of approximately 50 ° C or higher.

The electric heater 45 and the hand switch 46 are electrically connected to each other by a conductive wire 47 in the space 44 inside the cover 42. Furthermore, these conductive wires 47 are connected to the hose body
It is electrically connected to a shape-preserving piano wire 48 also provided inside 32, which also serves as a conductive wire. These piano wires 48 are respectively provided in the connection pipe part 33 and the main body suction port 21 of the cleaner main body 11 and are detachably connected to each other as shown in FIG.
It is electrically connected to the power supply circuit in the cleaner body 11 via 49. That is, the conductive wire 47 and the piano wire 48 in the cover 42 are for supplying electric power from the cleaner body 11 to the electric heater 45.

Further, small lattice-shaped outer communication holes 51 are formed in the upper surface of the cover 42, and by the outer communication holes 51,
A space 44 in the cover 42 communicates with the outside. Also,
A small inner communication hole 52 is formed in the peripheral surface of the grip pipe portion 34 facing the space portion 44, and the space portion 44 in the cover 42 is sucked into the grip pipe portion 34 by the inner communication hole 52. Wind path
It is connected to 41. The electric heater 45 is located between the outer communication hole 51 and the inner communication hole 52, and faces the suction air passage 41 through the inner communication hole 52.

In addition, the grip tube portion 34 and the cover 42 that become particularly hot are
It is made of heat-resistant synthetic resin or metal.

Next, the configuration of the electric circuit will be described with reference to FIG.

Both poles of a cord reel device 18 in the cleaner body 11 are detachably connected to both poles of an external 100V AC power source via a power cord 19. The electric blower 16 and the body switch 26 in the same cleaner body 11 are connected in series between both poles of the cord reel device 18. Further, between the two poles of the cord reel device 18, the electric blower 16 and the main body switch 26
In parallel with, the bimetal switch 27 in the cleaner body 11 and the hand switch 46 of the grip pipe section 34 of the hose 31 and the electric heater 45.
And are connected in series. Where the bimetal switch 27
As described above, the circuit on the side of the cleaner body 11 with the hand switch 46 and the electric heater 45 are connected via the connector 49, the piano wire 48 and the conductive wire 47.

Next, the operation of the above embodiment will be described.

At the time of cleaning, the cleaner body 11, the hose 31, the extension pipe 36, and the suction port body 37 are connected to each other, and the grip tube portion 34 of the hose 31 is held, and the suction port body 37 is appropriately run on the surface to be cleaned. . Of course, the power cord 19 is connected to an external AC power source. Then, when the main body switch 26 is operated to be turned on, the electric blower 16 starts to rotate and is in a drive state.Due to the driving of the electric blower 16, the dust sucked together with the suction wind from the suction opening of the suction port body 37. Is guided into the dust collecting chamber 14 of the cleaner body 11 via the suction port body 37, the extension pipe 36, and the suction air passage 41 in the hose 31, and is captured in the dust collecting bag 24. Also,
The air filtered by the dust collecting bag 24 and the auxiliary dust collecting filter 25 passes through the electric blower 16 and is discharged from the exhaust port to the outside of the cleaner body 11 as exhaust air. The main switch
When 26 is turned off, the electric power supply to the electric blower 16 is cut off and the electric blower 16 is stopped.

By the way, when the electric blower 16 is driven for cleaning, the flow of suction air for cleaning as shown by an arrow a in FIG. 1 is generated in the suction air passage 41 of the grip pipe portion 34 of the hose 31. Occurs. Along with this, as shown by the arrow b in FIG. 1, the outer communication hole 51 from the outside of the cover 42 and the space portion 44 in the cover 42.
And a minute flow of air that flows into the suction air passage 41 through the inner communication hole 52 is generated. The amount of the airflow is larger than the cross-sectional area of the suction air passage 41 of the grip pipe portion 34 in the outer communication hole 51 and the inner communication hole 52.
Since the cross-sectional area of is set to be sufficiently small, it is quite small compared to the air volume of the suction air for cleaning.

Here, when the hand switch 46 is operated to be turned on, the temperature in the dust collection chamber 14 is usually 50 ° C. or lower, and the bimetal switch 27 is turned on. , Hand switch 46 and conductive wire
Electric power is supplied from the cleaner body 11 side to the electric heater 45 in the cover 42 via 47 and the like, and the electric heater 45 energized generates heat. And this heat generated is
It rides on the wind indicated by the arrow b in the figure, merges with the suction air indicated by the arrow a in FIG. 1, passes through the hose 31 together with this suction wind, and is fed into the dust collecting chamber 14 of the cleaner body 11. Be done. Thus, the warmed suction air is sent to a position downstream of the electric heater 45 including the dust collection chamber 14 in the suction air passage 41, and the temperature at this position is at least about 50 ° C. or higher, that is, a temperature at which mites and the like can be killed. Rise to. Therefore, harmful microorganisms such as mites in the dust captured in the dust collection chamber 14 are killed by the heat.

Also, because the electric heater 45 continues to generate heat, the dust collection chamber
When the temperature inside 14 rises above about 60 ° C, the bimetal switch 27 inside the dust collection chamber 14 turns off and the electric heater
The power supply to 45 is automatically turned off, and the heat generation of this electric heater 45 is stopped. Further, when the temperature inside the dust collection chamber 14 drops to 50 ° C. or lower after the electric power to the electric heater 45 is cut off, the bimetal switch 27 is turned on again,
The power supply to the electric heater 45 is automatically turned on, and the heat generation of the electric heater 45 is restarted. by this,
The temperature in the dust collection chamber 14 is constantly maintained at a temperature at which harmful microorganisms, mainly mites can be killed. Therefore, harmful microorganisms can be completely and surely killed. Along with this, there is no fear that the temperature on the downstream side of the electric heater 45 will excessively rise abnormally, and constituent members at a position on the downstream side of the electric heater 45 such as deterioration of the electric blower 16 and deformation of the cleaner body 11 due to heat. It is safe and can prevent damage.

Therefore, according to the above-described embodiment, during cleaning, harmful microorganisms such as mites can be killed by hot air, and cleaning and killing harmful microorganisms are performed separately as in the conventional case. Compared to the case, it is less troublesome and
There is no need for a dedicated time for killing harmful microorganisms by hot air, and the overall work time can be shortened.

In addition, harmful microorganisms in the dust that remain on the inner surface of the hose 31 without reaching the dust collection chamber 14 can be killed.

In the above embodiment, the electric heater 45, which is a heat generation source, is provided in the grip tube portion 34 of the hose 31, but the heat generation source is
It may be provided in the suction port body, the extension pipe or the connecting pipe portion of the hose. However, in any case, the heat generation source must be provided at a position communicating with the suction air passage from the suction port body to the dust collection chamber.

(Effect of the Invention) According to the electric vacuum cleaner of claim 1, any one of the hose, the extension tube, and the suction port body communicates with the suction air passage from the suction port body to the dust collecting chamber of the cleaner body. Since a heat generation source is provided at the position where the heat is generated, harmful microorganisms such as mites that are sucked into the dust collection chamber can be killed by hot air during cleaning. Since it does not need to be performed separately, it does not take time and labor, and the heat generation source control means turns off the power supply to the heat generation source when the temperature in the dust collection chamber exceeds a predetermined temperature. It is possible to prevent damage to the components downstream of the above.

According to the electric vacuum cleaner of claim 2, the heat generation source control means supplies electric power to the heat generation source when the temperature in the dust collecting chamber becomes about 60 ° C. or higher in the vacuum cleaner of claim 1. When the temperature in the dust collection chamber falls below about 50 ° C, the power supply to the heat source is turned on, so the dust collection chamber is always kept at a temperature that can kill harmful microorganisms such as mites. In addition, it is possible to prevent the temperature from excessively rising abnormally, and to prevent deterioration of the electric blower and damage to the cleaner body due to heat, which is safe.

[Brief description of drawings]

FIG. 1 is a sectional view of a grip tube portion of a hose showing an embodiment of the electric vacuum cleaner of the present invention, FIG. 2 is a perspective view of the same as above, and FIG. FIG. 4 is a circuit diagram of the same as above. 11 …… Vacuum cleaner body, 14 …… Dust collection chamber, 16 …… Electric blower,
27 …… Bimetal switch as heat source control means,
31 …… Hose, 36 …… Extension pipe, 37 …… Suction port body, 41 ……
Suction air passage, 45 ... Electric heater that is a heat source, 47 ...
Conductive wire, 48 ... Piano wire that doubles as a conductive wire.

Claims (2)

[Scope of utility model registration request] 1. A cleaner body having an electric blower and a dust collecting chamber communicating with the intake side of the electric blower, and a hose having one end connected to the cleaner body communicating with the dust collecting chamber. An extension pipe having one end communicating with the other end of the hose; a suction port body communicating with the other end of the extension pipe; and the hose, the extension pipe and the suction port body. A heat generation source that is provided at a position communicating with the suction air passage from the suction port body to the dust collection chamber, and a conductive wire that supplies power from the cleaner body to the heat generation source. And a heat generation source control means for turning off the power supply to the heat generation source when the temperature in the dust collection chamber rises above a predetermined temperature. 2. The heat source controller controls the temperature in the dust collecting chamber to be about
The power supply to the heat generation source is turned off when the temperature becomes around 60 ° C or more, and the power supply to the heat generation source is turned on when the temperature in the dust collection chamber becomes approximately 50 ° C or less. The electric vacuum cleaner according to claim 1.