JPH10165334A - Electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress a temperature increase for electronic components and to prevent charging of static electricity to the electronic components caused by sticking of dust by guiding a part of air discharged from the outlet of a cleaner main body from an air passage to a fin disposing room and applying air to a heat radiating fin provided therein to radiate heat. SOLUTION: During using a vacuum cleaner, by the operation of a motor blower, a sucked air current containing dust from a floor brush or the like is sucked through a suction hose 14 and a suction port 13 into a dust collection room 10. Then, the sucked air is passed through the dust collection room 10 to eliminate its dust, then passed through an exhaust port 13 into a wiring room, then passed through an exhaust filter to be discharged from the exhaust port to the outside. In this case, a part of the air passing through the exhaust filter is supplied from a passage hole into a control means housing room 65a and contacted with the surface of a heat radiating fin 102 provided in a fin disposing room 101, and thereby heat is eliminated from the heat radiating fin 102. Thus, for an electronic component G, its heat is eliminated by the heat radiating fin 102 and its temperature increase is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vacuum cleaner.

[0002]

2. Description of the Related Art A conventional vacuum cleaner having a function as an air cleaner is disclosed in Japanese Patent Application Laid-Open No. 4-352925. As described in the detailed description of the invention and in FIGS. 1 to 3, the vacuum cleaner with a built-in air purifying function described in this publication has a cleaning suction port, a cleaning suction port, and an exhaust gas. A cleaner body having a mouth and a dust collection chamber communicating with the cleaning suction port; a dust collection chamber of the cleaner body; a cleaning filter provided in the dust collection chamber; and a cleaning filter provided in the cleaner body. A cleaning filter, provided inside the cleaner main body, sucking air outside the cleaner main body from the cleaning inlet into the interior of the cleaner main body, and passing the cleaning filter through the exhaust port to form the cleaner main body. And the air outside the main body of the cleaner is sucked into the main body of the cleaner from the suction port for cleaning and discharged through the exhaust port to the outside of the main body of the cleaner through the cleaning filter. That it is obtained by including an electric blower.

[0003] In such a conventional vacuum cleaner having an air cleaning function, a brush motor is used as a motor in a cleaning electric blower or a cleaning electric blower. Electronic components incorporated in an electric circuit for driving the brushed motor (hereinafter referred to as a drive circuit) do not generate heat at such a high temperature. It can sufficiently disperse and suppress the temperature rise.

[0004] Recently, a brushless motor has been used as an electric motor in a cleaning electric blower. A drive circuit for driving an electric blower using this brushless motor includes a field effect transistor (hereinafter referred to as FE) as an electronic component.
Called T. ) Is incorporated. Since this FET generates a large amount of heat and reaches a temperature of about 60 ° C. to 70 ° C., it is attached to a large radiating fin to release the heat generated by the FET and cool it. However, since the radiating fins are provided inside the main body of the vacuum cleaner, there is a limit to the size of the fins due to space limitations. There is a limit to control.

[0005]

As described above, in the conventional vacuum cleaner, the radiation fins are used to release and cool the heat of the FET incorporated in the drive circuit of the electric blower using the brushless motor. However, F
There is a limit to the effective release and cooling of ET heat.
Therefore, it is conceivable to provide a cooling fan in the cleaner body to send air to the radiating fins for cooling, but in this case, the configuration becomes large and the cleaner body becomes larger,
It is not adopted due to the problem of increased product costs. Therefore, there is a demand for effectively dissipating heat of an electronic component that generates such high-temperature heat with a simple configuration.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a vacuum cleaner capable of effectively dissipating heat of an electronic component that generates high-temperature heat with a simple configuration. .

[0007]

According to a first aspect of the present invention, there is provided a vacuum cleaner having a suction body and an exhaust port, a dust collecting chamber provided inside the cleaner body, and An electric blower disposed downstream of the dust collection chamber, and an exhaust filter provided downstream of the electric blower and upstream of the exhaust port and through which air sent from the electric blower passes. An electronic component mounted in a drive circuit for driving the electric blower, a radiating fin for releasing heat generated by the electronic component, a fin disposing chamber for disposing the radiating fin, and one of air passing through the exhaust filter. And a wind guide passage for guiding the portion to the fin arrangement chamber.

According to the structure of the present invention, a part of the air discharged from the exhaust port of the cleaner body is guided to the fin arrangement chamber by the air guide passage, and is forcibly applied to the radiation fin provided in the fin arrangement chamber. Remove enough heat from the fins. The radiating fins cooled in this manner sufficiently remove heat from the electronic components and release the heat to suppress the temperature rise of the electronic components, as compared to a case where the heat of the electronic components is simply released naturally as in the conventional case. For this reason, even if the electronic component emits high heat, such as an FET, the heat can be effectively released and the temperature rise can be suppressed. Since the air guided to the fin arrangement chamber has passed through the exhaust filter to remove fine dust, it is possible to prevent dust contained in the air from adhering to the electronic components and charging the electronic components with static electricity.

According to a second aspect of the present invention, in the electric vacuum cleaner according to the first aspect, the radiating fin has a fin length direction against the flow of air blown out from the air guide passage to the fin housing chamber. Are arranged so as to be parallel to each other.

According to the structure of the present invention, the air guided to the fin arrangement chamber flows along the fin length direction of the radiating fins and comes into contact with the radiating fins. The radiation effect of the radiation fins can be enhanced.

According to a third aspect of the present invention, in the vacuum cleaner according to the first aspect, the fin-arranged chamber has a discharge section for discharging air blown out from the air guide passage, and a collection section for guiding the air to the dust collection chamber. A dust chamber communication part and an opening / closing member for opening / closing the discharge part and closing / opening the dust collection chamber communication part in conjunction with the opening / closing operation are provided.

According to the configuration of the present invention, the discharge portion is opened by the opening / closing member and the communication portion of the dust collection chamber is closed, and the air guided to the fin arrangement chamber is discharged from the discharge portion to the outside. Further, by closing the discharge unit by the opening / closing member and opening the communication unit of the dust collection chamber, the air guided to the fin arrangement chamber is guided to the dust collection chamber through the communication unit of the dust collection chamber. The temperature of the air guided to the fin arrangement chamber rises by removing heat from the radiation fins, and is further heated from the dust collection chamber through an electric blower. The heated air is used to control pests such as mites contained in the air sucked through the air inlet.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. This embodiment is applied to a vacuum cleaner having an air purifying function. FIG.
3 is a partially cutaway plan view of a vacuum cleaner having an air purifying function (hereinafter referred to as a vacuum cleaner), FIG. 2 is a partially cutaway side view of the vacuum cleaner, and FIG.
FIG. 2 is a partially cutaway front view of the vacuum cleaner.

As shown in FIG. 1 to FIG.
Is composed of a main body case 1 composed of an upper case 2 and a lower case 3 integrally connected by mounting screws (not shown), an opening / closing lid 12, and a lid 46.

Inside the front side (left side in FIGS. 1 and 2) of the main body case 1, there is formed a dust collecting chamber 10 provided with an opening (not shown) in the upper part of the figure. The opening and closing lid 12 is provided with a cleaning suction port 13 to which a connection pipe 14 to which a suction hose 14a is connected is detachably attached. Further, the suction port 13 is connected to the dust collection chamber 10.
Is in communication with The suction hose 1
A gripping tube (not shown) is provided at 4a similarly to the well-known one.

The dust collecting device 15 includes a filter 15a formed by bending a conventionally known filter paper or the like into a wave shape and a filter frame 15b for mounting the filter 15a. In FIG. 2, the filter frame 15b is provided with engagement protrusions 16a, 16b
Are formed, and the engaging projections 16a and 16b are formed on a partition wall 17 provided on the downstream side of the dust collecting chamber 10.
It is arranged so that it can be attached to and detached from the partition wall 17 of the dust collecting chamber 10 by engaging and disengaging with the dust collecting chambers 7a and 17b. Further, the partition wall 17 is provided with a vent 18 communicating with a first air passage 7 described later. This dust collector 1
5 is located on the upstream side in the air flow direction with respect to the electric blower 60 for cleaning. Note that a dust bag, which is a dust collecting device (not shown), is provided in the dust collecting chamber 10.

The dust collecting chamber 10 of the main body case 1
A cleaning electric blower room 20 for accommodating the electric cleaning blower 60 is formed at the downstream side of. The cleaning electric blower room 20 includes a peripheral wall 21a, a front wall 21b, and a rear wall 21c.
And an inlet 22 is formed in the front wall 21b. In addition, peripheral wall 2
In FIG. 2A, a rectangular outlet 23 is provided above. The cleaning electric blower 60 includes a brushless motor 61 and a centrifugal fan (not shown) rotated at a high speed by the brushless motor 61 and stored in a fan cover 62. Electric blower room 2 for cleaning
0 and stored.

Further, as shown in FIG.
A cleaning electric blower room 30 is formed at the side of the cleaning electric blower room 20 and houses the cleaning electric blower 70 that sucks the air to be cleaned. Further, an intake port 31 is formed on a surface of the cleaning electric blower room 30 opposite to the cleaning electric blower room 20, and the cleaning electric blower room 30 is located upward in FIG. 1 is formed with a discharge port 33 opened in the upper direction. The cleaning electric blower room 30 houses the cleaning electric blower 70. The cleaning electric blower 70 includes an induction motor 71 and a fan 72 mounted on a rotation shaft 71 a of the induction motor 71. The induction motor 71 is similarly mounted by screws 71b, 71b via a buffer (not shown), and is housed in the cleaning electric blower room 30.

An installation chamber 40 is formed downstream of the cleaning electric fan room 20 and the cleaning electric fan room 30, that is, above the cleaning electric fan room 20 and the cleaning electric fan room 30 in FIG. The installation chamber 40 includes a bottom wall 41, and a lid 46 including a peripheral wall 46a whose edge is in contact with an outer peripheral portion of the bottom wall 41 and a ceiling wall 46b. The lid 46 is attached to the bottom wall 41 in an airtight state by attaching means (not shown). The bottom wall 41 has an outlet 23 provided in the cleaning electric blower room 20 and an outlet 33 provided in the cleaning electric blower room 30, respectively. A convex peripheral wall 42 is formed on the bottom wall 41, and a fitting groove 43a is formed on the upper end of the peripheral wall 42, and a fitting step 43b is formed on the inner side. Further, the lid 4
The ceiling wall 46b of No. 6 has a raised portion at the center, and an exhaust port 47 is formed at the center of the raised portion.

An exhaust filter 48 is housed in the installation chamber 40, and the exhaust filter 48
8a and a filter 48b attached to the filter frame 48a. Also, this filter 48
b is a wave filter made of a material, which is generally called a hepa filter, capable of capturing dust in the order of microns and is attached to the filter frame 48a. The exhaust filter 48 is provided with the lid 46 removed. After the filter frame 48a is placed on the packing P having a circular cross section fitted into the fitting groove 43a, the cover 46 is attached to the bottom wall 41 by the attachment means (not shown) to thereby provide the installation chamber 40. It is stored inside.

When the lid 46 is attached, the filter frame 48a is pressed by the packing P to be in an airtight state, and the peripheral wall 42 and the filter frame 4 are not sealed.
Exhaust air is prevented from leaking from between the lower end of 8a. The fitting step 4 formed on the peripheral wall 42
A deodorizing filter 49 impregnated with a deodorant is fitted and attached to 3b. This exhaust filter 48 is on the downstream side in the air flow direction with respect to the electric blower 60 for cleaning,
It is located upstream of the exhaust port 47 in the air flow direction.

A valve 24 made of a rectangular thin plate is provided at the discharge port 23 opened in the bottom wall 41 so as to be rotatably supported on one end side, that is, the left side in FIG. Have been. The valve 24 is rotated upward in the counterclockwise direction by receiving the pressure of the exhaust air discharged by the driving of the cleaning electric blower 60 to open the discharge port 23, and the cleaning electric blower 60 is stopped. When the exhaust air is exhausted, it turns clockwise due to its own weight,
Is to be closed.

Similarly, a valve 34 made of a rectangular thin plate is provided at the outlet 33 so as to be rotatably supported at one end, that is, the left side in FIG. 2 by a rotation shaft 34a. The valve 34 receives the pressure of the exhaust air discharged by driving the cleaning electric blower 70 and turns upward, that is, clockwise, to open the discharge port 33. Further, the cleaning electric blower 70 is stopped and the exhaust is performed. When the wind disappears, the discharge port 33 is rotated counterclockwise by its own weight to close the discharge port 33.

That is, when the cleaning electric blower 60 is driven and the cleaning electric blower 70 is stopped, the exhaust air from the cleaning electric blower 60 causes the valve 24 to rotate in the counterclockwise direction and discharge the air. Although the valve 23 is opened, since the valve 34 closes the discharge port 33 by its own weight, the exhaust air from the cleaning electric blower 60 does not flow into the cleaning electric blower chamber 30. Conversely, when the cleaning electric blower 60 is stopped and the cleaning electric blower 70 is driven, the valve 34 is rotated clockwise by exhaust air from the cleaning electric blower 70 to rotate the discharge port 33.
The valve 24 is closed by its own weight and the outlet 23 is closed.
Does not flow into the cleaning electric blower room 30.

Further, the valve 24 is opened and the exhaust air is blown into the installation chamber 4.
Since the pressure in the disposition chamber 40 increases when the pressure flows into 0,
Since this pressure acts in the direction in which the valve 34 closes the discharge port 33, the valve 34 reliably closes the discharge port 33 with its own weight. Similarly, the pressure in the disposition chamber 40 increases when the gas flows in, so that the pressure acts in the direction in which the valve 24 closes the outlet 23, so that the valve 24 reliably closes the outlet 23 with its own weight. .

Further, a concave storage portion 4 having a suction port 4a is formed on a side wall of the main body case 1 opposite to the suction port 31 of the cleaning electric blower chamber 30, and the storage portion 4 has A relatively coarse filter 5a and this filter 5
The filter device 5 composed of the filter frame 5b to which a is attached is detachably attached. Further, a lid frame 6 having a through hole 6a is attached to the storage section 4. Then, when the cleaning electric blower 70 is driven, the air to be cleaned in the room is sucked in from the through hole 6a and the suction port 4a.

The suction port 22 formed in the front wall 21b of the cleaning electric blower room 20 is formed in a mountain shape with its center as a ridgeline L as shown in FIG. Are formed, and through holes 25a and 26a are formed in these inclined walls 25 and 26, respectively. The ventilation holes 1 formed in the partition wall 17
8 and the through hole 25a formed in the inclined wall 25, the first air path formed by being surrounded by the partition wall 17 and the partition wall 27 integrally formed with the front wall 21b and the ridge L. 7, a suction port 4a formed in a filter housing portion 4 formed in a side wall of the main body case 1, and a through hole 26a formed in the inclined wall 26.
Means a partition wall 27 formed integrally with the ridge L, a peripheral wall 21 composed of the peripheral wall 21a, a front wall 21b, and a rear wall 21c of the electric blower chamber 20 for cleaning, and a peripheral wall of the main body case 1. They are communicated by an air passage 8.

The switching valve 90 for opening and closing the through holes 25a and 26a formed in the inclined walls 25 and 26 will be described. The switching valve 90 is composed of rectangular thin plates 91 and 92 for opening and closing the respective through holes 25a and 26a, and a rod-shaped connecting member 96 for connecting these valves 91 and 92 to operate in conjunction. A boss 91a is formed at the base end of the valve 91,
An operating shaft 93 is integrally attached to the boss portion 91a, and a convex portion 91c is formed on the distal end side.

Both ends of the operating shaft 93 of the valve 91 are provided with bearings 28a, 28 formed inside the partition wall 27 located on the upstream side with respect to the flow of the suction airflow through the through hole 25a.
b, and is rotatably supported at the through hole 25a, that is, disposed upstream of the inclined wall 25. The operating shaft 93
In FIG. 2, the upper side penetrates the partition wall 27, and a gear 29 is provided at the distal end thereof. Then, as shown in FIG. 2, the driving means 97 attached to the outside of the partition wall 27 is rotated.
That is, when the valve 91 is rotated clockwise in FIG. 1 by the driving means 97, the through hole 25a is opened, and when the valve 91 is rotated counterclockwise, the through hole 25a is closed. The driving means 97 is composed of a stepping motor (not shown) and a deceleration mechanism, and the driving means 97 is operated by being controlled by a control means 65 described later.

A boss 92 is provided at the base end of the valve 92.
The shaft 94 is integrally attached to the boss portion 92a, and a convex portion 92c is formed on the distal end side. Both ends of the shaft 94 of the valve 92 are rotatably supported by bearings (not shown) formed inside the partition wall 27 located on the upstream side of the flow of the air to be cleaned in the through hole 26a. 25a, that is, disposed upstream of the inclined wall 25, the valve 92 opens the through hole 26a when rotated clockwise in FIG. 1, and opens the through hole 26a when rotated counterclockwise in FIG. It is designed to close.

Both ends of the connecting member 96 are fitted into fitting holes 91c and 92c formed in the convex portions 91d and 92d provided in the valves 91 and 92, respectively. 91 and 92 operate in conjunction with each other. That is, when the valve 91 is rotated clockwise by the driving means 97, the valve 91 opens the through hole 25a, and the valve 9 is rotated in conjunction with the rotation of the valve 91.
Similarly, 2 rotates counterclockwise to close the through hole 26a. Conversely, when the valve 91 is rotated counterclockwise by the driving means 97, the valve 91 closes the through hole 25a,
In conjunction with the rotation of the valve 91, the valve 92 similarly rotates clockwise to open the through hole 26a. In addition,
A sealing member 2 is provided at the edge of the through holes 25a and 26a.
5b and 26b are provided to increase the airtightness with the valves 91 and 92.

The control means 65 comprises a microcomputer or the like, and is housed in a control means housing chamber 65a formed in front of the installation chamber 40 as shown in FIG. The control means 65 includes a power switch (not shown) provided on the upper surface of the main body case 1, a drive switch for the cleaning electric blower 60, a drive switch for the cleaning electric blower 70,
It operates by operating various control switches such as a changeover switch of the changeover valve 90. As shown in the figure, a conventionally well-known cord reel device 9 around which a power cord 9a is wound is provided at a rear portion of the main body case 1, and the power cord 9 is provided.
a is provided with a plug (not shown). FIG.
As shown in the figure, a turning wheel 19a and a traveling wheel 19b are provided at the bottom of the main body case 1.

Further, as shown in FIGS. 2 and 3, inside the main body case 1, a side wall, a partition wall 17, a partition wall 27 and a side wall located on the side opposite to the side of the main body case 1 provided with the filter device 5 are provided. A fin arrangement room 101 is formed which is surrounded by a wall of the electric blower room 20 for cleaning and a bottom wall of the control means housing room 65a. In this case, the bottom wall of the control means storage chamber 65a forms a ceiling wall of the fin arrangement chamber 101.

A radiating fin 102 made of a metal having good thermal conductivity is arranged in the fin arrangement chamber 101. The radiation fin 102 has a plurality of fin portions 102a arranged in parallel on one side surface, and an electronic component G, for example, an FET, is mounted on the other surface portion. The radiating fins 102 are arranged so as to be oriented such that the length direction of the fin portion 102a is along the vertical direction.

As shown in FIGS. 4 to 6, a plurality of discharge ports 103 as an example of a discharge portion are provided on the side wall of the main body case 1 constituting the fin arrangement chamber 101 at intervals in the front-rear direction of the main body case 1. It is formed side by side. The part of the partition wall 17 constituting the fin arrangement chamber 101 is the fin arrangement chamber 1
01 and the dust collection chamber 10, and a communication hole 104, which is an example of a communication part that connects the fin arrangement chamber 101 to the dust collection chamber 10, is formed in the partition wall 17. 4 and 5 are partially cutaway side views of the fin arrangement chamber 101 as viewed from the outside of the main body case 1, and FIG. 6 is a sectional view taken along the line Z-Z in FIG.

As shown in FIGS. 4 and 5, inside the fin arrangement chamber 101, an opening / closing member 105 made of a plate material is linearly slid along the side wall of the main body case 1 in the longitudinal direction of the main body case 1. It is provided supported by the side wall. The opening and closing member 105 is formed with a discharge port 106 having substantially the same size as the discharge port 103 and arranged in the front-rear direction of the main body case 1 at the same interval as the discharge port 103. A closing portion 105a is formed at the front end of the opening / closing member 105 located on the dust collection chamber 10 side.
05 moves toward the front part (dust collection chamber 10) of the main body case 1 and comes into contact with the partition wall 17 in which the communication hole 104 is formed to stop the forward movement of the opening / closing member 105 and to stop the communication hole 1
04 is closed.

Here, the discharge port 1 of the opening / closing member 105
In the state where the closing portion 105a contacts the partition wall 17 and stops the forward movement of the opening / closing member 105 and closes the communication hole 104, the discharge port 106 discharges the main body case 1. The outlet 103 is overlapped with the outlet 103, the outlet 103 is opened, the opening / closing member 105 moves toward the rear part of the main body case 1, the outlet 106 is disengaged from the outlet 103 of the main body case 1, and the opening / closing member 105 is connected to the outlet 1
03 is closed, the blocking portion 105a is
And the communication hole 104 is opened. As shown in FIG. 1, a lever 107 for sliding movement is provided on the opening and closing member 105 so as to protrude from the wall of the main body case 1 to the outside.

As shown in FIG. 2 and FIG.
6, a ceiling wall 46b and a filter 4
8 and the control means storage chamber 6 of the main body case 1.
A passage hole 108 is formed in a portion facing a. A passage hole 109 facing the passage hole 108 of the lid 46 is formed in the peripheral wall of the control means storage chamber 6a. For this reason, the space above the filter 48 inside the lid 46 communicates with the control means storage chamber 6a through the passage holes 108 and 109, and a part of the air that has passed through the filter 48 passes through the passage holes 108 and 109. It flows into the control means storage chamber 6a via the control unit 109. In FIG. 3, the control means provided in the control means storage chamber 6a is omitted.

Further, a passage hole 11 is formed in the bottom wall portion of the control means storage chamber 6a constituting the ceiling of the fin arrangement chamber 101.
0 is formed. Therefore, the control means storage chamber 6a communicates with the fin arrangement chamber 101 through the passage hole 110, and the air flowing into the control means storage chamber 6a from the lid 46 blows out to the fin arrangement chamber 101 through the passage hole 110. It has become. As a result, the control means storage chamber 6a
8 serves as a ventilation path for guiding the air passing through 8 to the fin arrangement chamber 101.

The electronic component G attached to the radiation fin 101 can be used as a hole for passing a lead wire (not shown) for connecting to the control means 65 provided in the control means storage chamber 6a.

The operation of the vacuum cleaner constructed as described above will be described. First, when used as a vacuum cleaner, a plug (not shown) of the power cord 9a is connected to an outlet, and a changeover switch (not shown) is operated to rotate the changeover valve 90 clockwise by the control means 65 so that the through-hole is formed. 25a and the valve 9 so as to close the through hole 26a.
1 and 92 are operated, and then the drive switch of the electric cleaning fan 60 (not shown) is closed. Then, the cleaning electric blower 60 is driven, and dust is sucked into the dust collecting chamber 10 from the floor brush (not shown) through the suction hose 14 together with the suction airflow through the suction hose 14. And
The suction airflow containing the dust passes through the dust collecting device 15 to remove the dust, and then the suction airflow is changed to the ventilation hole 18, the first air passage 7, the through hole 25 a, the electric blower 60 for cleaning, and the outlet 23.
The air enters the installation chamber 40 through the exhaust filter 48 and is exhausted from the exhaust port 47 to the outside of the main body case 1. In addition, when the sucked air passes through the cleaning electric blower 60, it is heated by the heat generated by the electric blower 60 and its temperature rises. As a result, pests such as mites contained in the air can be heated to exterminate. .

When the exhaust air flows through the outlet 23, the valve 24 rotates counterclockwise due to the pressure of the exhaust air to open the outlet 23, and when the exhaust air passes through the exhaust filter 48, the exhaust air The fine dust contained in is removed,
Since the air discharged from the exhaust port 47 is clean, sanitary cleaning can be performed. Further, since the exhaust air flowing out of the outlet 23 is closed by the valve 34, the exhaust air is not exhausted from the inlet 4a to the outside, that is, the room, through the cleaning electric blower chamber 30. All exhaust air containing fine dust is exhausted through the exhaust filter 48, and sanitary cleaning can be performed from this point as well.

Here, the operation of cooling the radiating fins 102 arranged in the fin arranging chamber 101 using exhaust air when used as a vacuum cleaner will be described. In this case, as shown in FIG. 4, for example, the opening / closing member 105 is moved toward the rear part of the main body case 1 and the discharge port 106 is moved to the fin arrangement chamber 1.
01, and is closed by covering the outlet 103 with the wall of the opening / closing member 105.
a is separated from the partition wall 17 to open the dust collection chamber communication hole 104 to shield the fin arrangement chamber 101 from the outside of the main body case 1 and connect the fin arrangement chamber 101 to the dust collection chamber 10.

As described above, a part of the air that has passed through the exhaust filter 48 is discharged to the outside of the main body case 1 from the exhaust port 47 of the lid 46, but the other part is connected to the passage hole 108 of the lid 46. It flows into the control means storage chamber 6a through the passage hole 109 of the control means storage chamber 6a. Next, the air passes through the inside of the control means storage chamber 6a, and
No. 01 flows into the fin arrangement chamber 101 through the passage hole 110 formed in the bottom wall of the control means storage chamber 6a constituting the ceiling wall. The air that has flowed into the fin disposition chamber 101 is dissipated by the radiation fins 1 disposed inside the fin disposition chamber 101.
02 surface. On the other hand, heat generated by the electronic component G is conducted to the radiation fins 102. The air is radiating fins 102
And contacts the entire surface of the fin portion 10 to remove heat from the radiation fin 102. Therefore, the heat of the electronic component G is sufficiently removed by the radiation fins 102, and the temperature rise can be suppressed.

The temperature of the heat generated by the electronic component G such as an FET is higher than the temperature of the air heated by passing through the electric blower 60 for cleaning. Control means storage room 6a
If any of the electronic components constituting the control means provided in the control unit is weak to heat, the electronic parts are stored in the control means storage chamber 6.
In order to prevent the electronic component from being thermally affected by the air flowing through a, measures such as providing a cover for covering the electronic component integrally with or separately from the main body case are taken.

Here, air is blown down from the passage hole 110 formed in the bottom wall of the control means accommodating chamber 6a constituting the ceiling wall of the fin arrangement chamber 101 into the fin arrangement chamber 101, and extends vertically. Flows. Also, the radiation fins 102
Are arranged so that the length direction of the fin portion 102a is along the vertical direction. Therefore, the air blown down into the fin arrangement chamber 101 is supplied to the fin portion 1 of the radiation fin 102.
The fins 10 flow smoothly along the length direction of the fins 10 and efficiently contact the entire surface of the fin portion 10 to cool the heat radiation fins 102 satisfactorily. In this way, the heat radiation fins 102 can sufficiently remove and release the heat of the electronic component G and sufficiently cool the electronic component G. Therefore, even if the electronic component generates high heat, such as an FET, it can be sufficiently cooled. Since the air guided to the fin arrangement chamber 101 has passed through the exhaust filter 48 to remove fine dust, dust contained in the air adheres to the radiation fins 102 and the electronic component 1E, and static electricity is generated on the electronic component G. Charging can be prevented.

Next, the air flows from the fin arrangement chamber 101 through the communication hole 104 formed in the partition wall 17 into the dust collection chamber 10, and is again described together with the air sucked into the dust collection chamber 10 from the suction hose 14. Passes through the electric blower 60 for cleaning. Here, the temperature of the air is raised by exchanging heat with the radiating fins 102 in the fin arrangement chamber 101, and further the air is heated by the heat generated by the electric blower 60 by passing through the electric blower 60 for cleaning. The temperature rises. For this reason, the air that has flowed into the dust collection chamber 10 from the fin arrangement chamber 101 first preheats the air sucked at this stage, and further heats the air at a higher temperature than in the case where the cleaning electric blower 60 does not heat the air. Is done. Therefore, the air can surely exterminate pests such as mites contained in the air sucked from the suction hose 14 into the dust collection chamber 10.

FIG. 7 shows a path through which the air passing through the exhaust filter 48 flows from the fin arrangement chamber 101 to the dust collection chamber 10.

Also, as shown in FIG. 5, the opening / closing member 105 is moved toward the front of the main body case 1 so that the discharge port 106 thereof coincides with the discharge port 103 of the fin placement chamber 101 so that the fin placement chamber 101 is discharged. In addition to communicating with the outside of the main body case 1 via 103 and 106, the closing portion 105 a abuts on the partition wall 17 to close the dust collecting chamber communication hole 104, and the fin arrangement chamber 101 with respect to the dust collecting chamber 10. Cut off. In this case, the air that has flowed into the fin arrangement chamber 101 is
0 through the outlets 103 and 106 without flowing to the main body case 1
Is discharged to the outside.

Next, a case where the cleaner is used as an air cleaner will be described. In this case, for example, the opening / closing member 1
5 is positioned as shown in FIG.
1 is discharged to the outside of the main body case 1 through the outlets 103 and 106.

When the vacuum cleaner is used as an air purifier, there are two modes: a silent cleaning mode in which the air is cleaned quietly while sleeping, and a rapid cleaning mode in which the indoor air is cleaned in a short time. There is. First, when used in a silent clean mode, the plug of the power cord 9a is connected to an outlet, and a changeover switch (not shown) is operated to rotate the changeover valve 90 counterclockwise by the control means 65 so that the through hole is formed. The valves 91 and 92 are operated so as to close the opening 25a and open the through hole 26a, and then close the drive switch of the electric cleaning fan 70 (not shown). Then, the cleaning electric blower 70 is driven, and the air to be cleaned in the room is sucked through the through-hole 6 a formed in the lid frame 6, the filter device 5, and the suction port 4 a, and the suction port 31 and the inside of the cleaning electric blower chamber 30 are formed. , Flows into the installation chamber 40 from the discharge port 33, and is discharged into the room through the exhaust filter 48.
Then, large dust is removed from the air to be cleaned by the filter device 5, and fine dust is removed when passing through the exhaust filter 48, and the air is cleaned and discharged indoors. When the air to be cleaned flows from the cleaning electric blower chamber 30 into the disposition chamber 40 through the outlet 33, the valve 34 opens clockwise due to the wind pressure of the air to be cleaned. Further, since the valve 24 is rotated in the clockwise direction by its own weight to close the discharge port 23, the air to be cleaned passes through the electric blower chamber 20 for cleaning, the dust collecting chamber 10, and the like, via the suction hose 14a. As a result, the air to be cleaned can be completely cleaned.

In the case of use in the rapid cleaning mode, the selector switch (not shown) is operated to rotate the valve means 90 in the counterclockwise direction by the control means 65, and the through hole 25 is rotated by the valve 91.
a and the through hole 26a is opened by the valve 92,
Next, the drive switch of the electric cleaning fan 60 is closed. Then, the cleaning electric blower 60 is driven, and the air to be cleaned is supplied to the through hole 6a, the filter device 5, the suction port 4a,
Second air path 8, through hole 26a, electric blower 60 for cleaning,
The air is exhausted from the exhaust port 47 through the exhaust port 48 through the exhaust port 23 and the installation chamber 40. And the outlet 23
When the air to be cleaned flows, the valve 24 rotates counterclockwise by the pressure of the exhaust air to open the discharge port,
Further, since the valve 34 rotates counterclockwise by its own weight and closes the discharge port 33, all the air to be cleaned passes through the exhaust filter 48, and the fine air contained in the air to be cleaned at this time. The dust is removed and the purified air is discharged from the exhaust port 47.

In this rapid cleaning mode, the air to be cleaned is sucked and cleaned by the cleaning electric blower 60 having a large suction capacity, so that the indoor air can be cleaned in a short time. At this time, the cleaning electric blower room 30
The air to be cleaned sucked by the electric cleaning blower 60 passes through the electric cleaning air blower chamber 30 and the second air passage 8, and the electric discharge air blowing air blower 60 is closed again by the cleaning air blower 60. Flowing into the chamber 20, that is, the second wind again through the second air passage 8, the cleaning electric air blower room 20, the outlet 23, the arrangement room 40, the outlet 33, and the cleaning electric blower room 30. Since it is prevented from flowing to the road 8 and returning, an efficient cleaning operation is performed.

When the air purifier is used as described above, the opening / closing member 105 is moved toward the front of the main body case 1 so that the discharge port 106 is moved to the discharge port 10 of the fin arrangement chamber 101.
3 and the fin arrangement chamber 101 is set at the outlet 103, 1
06 and the outside of the main body case 1, the closing portion 105 a contacts the partition wall 17 to close the dust collecting chamber communication hole 104, and the fin arrangement chamber 101 is moved to the dust collecting chamber 10.
To shut off.

When the thus-configured vacuum cleaner A is used as a vacuum cleaner, the exhaust air generated by the electric blower 60 for cleaning passes through the installation chamber 40 in which the exhaust filter 48 is installed, when the exhaust air passes through the installation chamber 40. Fine dust is removed by the exhaust filter 48 and exhausted, so that sanitary cleaning can be performed. Further, when the cleaning electric blower 60 is driven, since the valve 34 is closed at the discharge port 33, the exhaust air from the cleaning electric blower 60 is discharged from the cleaning electric blower room 30.
All the exhaust air is exhausted through the exhaust filter 48 without being exhausted from the intake port 4a via the air outlet, so that fine dust contained in the exhaust air is reliably removed. When the cleaning dynamic blower 70 is driven, the cleaning dynamic blower 70
Since the air to be cleaned is not discharged from the discharge port 23 through the electric blower chamber 20 for cleaning, and the air to be cleaned is all discharged through the exhaust filter 48, the air from which fine dust has been removed is discharged. Air purification can be performed reliably.

The suction port 2 of the electric blower room 20 for cleaning
2 is provided with a switching valve 90 for selectively switching between the first air path 7 and the second air path 8 to drive the cleaning electric blower 60 to perform rapid cleaning, and Blower 70
The one that chooses to drive silent clean. Also, when performing rapid cleaning, since the discharge port 33 of the cleaning dynamic blower chamber 30 is closed by the valve 34, the air to be cleaned sucked by the cleaning electric blower 60 is removed. Since the air does not flow back through the cleaning electric blower room 30 or the like, efficient air cleaning can be performed.
When the quick cleaning mode is not provided, the switching valve 90 can be omitted.

The present invention is not limited to the above-described embodiment, but can be implemented in various modifications. For example, in the above-described embodiment, the air guide passage uses the control means accommodating chamber. However, the present invention is not limited to this, and it is possible to adopt a configuration in which another portion is used or provided exclusively. Although the above-described embodiment is directed to a vacuum cleaner having an air cleaning function, the present invention is not limited to this, and may be directed to a vacuum cleaner having only a cleaning function.

[0058]

According to the vacuum cleaner of the first aspect of the present invention,
A part of the air exhausted from the exhaust port of the cleaner body is guided to the fin arrangement chamber by the air guide passage, and the radiation fin is cooled by forcibly cooling the radiation fin by hitting the radiation fin provided in the fin arrangement chamber. Can sufficiently remove heat from the electronic component and release it, thereby suppressing an increase in the temperature of the electronic component.
For this reason, even if the electronic component generates high heat, such as an FET, it can be sufficiently cooled. Since the air introduced into the fin arrangement chamber has passed through the exhaust filter to remove fine dust, the dust contained in the air is prevented from adhering to the radiation fins and electronic components, and the electronic components are not charged with static electricity. it can.

According to the second aspect of the present invention, in the electric vacuum cleaner according to the first aspect, the air guided to the fin arrangement chamber flows along the fin length direction of the radiating fin, so that the air is released. Can be sufficiently cooled.

According to a third aspect of the present invention, in the vacuum cleaner according to the first aspect, the discharge portion is closed by the opening / closing member and the communication portion of the dust collection chamber is opened to collect the air guided to the fin arrangement chamber. By guiding to the dust collection chamber through the chamber communication part and passing the electric blower again from the dust collection chamber, the air cooled in the radiating fins is used to remove the harmful insects such as mites contained in the air sucked into the dust collection chamber. Can be effectively eliminated.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing a vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing the vacuum cleaner according to the embodiment;

FIG. 3 is a partially cutaway front view showing the vacuum cleaner according to the embodiment;

FIG. 4 is a view showing a relationship between a fin arrangement chamber and an opening / closing member provided in the vacuum cleaner according to the embodiment.

FIG. 5 is a diagram showing a relationship between a fin arrangement chamber and an opening / closing member provided in the electric vacuum cleaner according to the embodiment.

FIG. 6 is an exemplary sectional view showing the relationship between the fin arrangement chamber and the opening / closing member provided in the electric vacuum cleaner according to the embodiment;

FIG. 7 is a diagram showing a path in which air that has passed through a filter flows to the fin arrangement chamber in the vacuum cleaner according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Body case, 10 ... Dust collection room, 13 ... Suction port, 47 ... Exhaust port, 48 ... Exhaust filter, 60 ... Electric fan for cleaning, 70 ... Electric fan for cleaning, 101 ... Fin arrangement room, 102 ... Radiation fin 103, a discharge port, 104, a communication hole, 105, an opening / closing member, 106, a discharge port, 108, a passage hole, 109, a passage hole, 110, a passage hole.

Claims (3)

[Claims] 1. A cleaner body provided with a suction port and an exhaust port, a dust collecting chamber provided inside the cleaner body, and an electric blower disposed downstream of the dust collecting chamber. An exhaust filter provided downstream of the electric blower and upstream of the exhaust port and through which air sent from the electric blower passes, and an electronic component incorporated in a drive circuit for driving the electric blower are provided. A heat radiation fin that is mounted and emits heat generated by the electronic component; a fin arrangement chamber in which the heat radiation fin is arranged; and a wind guide passage that guides a part of the air that has passed through the exhaust filter to the fin arrangement chamber. An electric vacuum cleaner characterized by the above. 2. The radiating fins are arranged such that a fin length direction is parallel to a flow of air blown from the air guide passage to the fin arrangement chamber. 2. The vacuum cleaner according to 1. 3. The fin arrangement chamber includes a discharge portion for discharging air blown out from the air guide passage, a communication portion for communicating with the dust collection chamber leading to the dust collection chamber, and an opening and closing of the discharge portion. The vacuum cleaner according to claim 1, further comprising an opening / closing member that closes and opens the communication portion of the dust collection chamber in conjunction with a closing operation.