JP2000245664A - Cyclone type vertical vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cyclone type vertical vacuum cleaner capable of improving dust collecting performance. SOLUTION: This cleaner is provided with a cleaner main body part 2 where a fan motor 4 provided with an intake port and a discharge port 4c for generating intake air and the cyclone 21 of an inverse conical shape are disposed inside, a nozzle part 3 provided with a suction port 3b freely turnably arranged at the lower part of the cleaner main body part 2 and opened facing a floor surface, a first suction passage A1 for communicating the suction port 3b and the cyclone 21, a second suction passage A2 for communicating the cyclone 21 and the intake port and a circulating flow passage A3 for guiding a discharge flow from the discharge port 4c to the suction port 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cyclone type vertical vacuum cleaner having an inverted conical cyclone.

[0002]

2. Description of the Related Art Conventional cyclone type vertical vacuum cleaners are:
For example, it is disclosed in Japanese Unexamined Utility Model Publication No. 3-103057. FIGS. 5 and 6 show a front view and a schematic front sectional view thereof. The vacuum cleaner main body 100 supports a bottomed cylindrical outer cyclone 103 a by hollow columns 104 and 105.
Inside the outer cyclone 103a, an inverted conical inner cyclone 103b is provided to constitute a cyclone device 103, and a dust collecting container 10 is provided below the inner cyclone 103b.
9 are arranged.

[0003] A support 104 and an outer cyclone 103a, an outer cyclone 103a and an inner cyclone 103b, and an inner cyclone 103b and a support 105 are connected to hoses 106 and 10 respectively.
7, 108. At the lower part of the cyclone device 103, a fan motor 102 communicating with a support 105 is disposed, and an exhaust port 1 provided on a side of the cleaner body 100 is provided.
Exhaust gas from the fan motor 102 is discharged from the exhaust gas pump 10. A nozzle body 101 having a suction port 101a is attached below the cleaner body 100, and is formed so that the suction port 101a communicates with the inside of the column 104.

[0004] In such a cyclone type vertical vacuum cleaner, intake air is generated by rotation of a fan motor 102.
The intake air flowing into the outer cyclone 103a from the suction port 101a through the support post 104 and the hose 106 flows downward and spirally separates large-sized dust and the like to be deposited in the outer cyclone 103a. After that, the intake air flows into the inner cyclone 103b from above the outer cyclone 103a via the hose 107, and separates fine dust and the like while spirally moving downward to be deposited in the dust collection container 109.

[0005] The collected intake air is the inner cyclone 1.
The air is exhausted from the exhaust port 110 through the hose 108 to the fan motor 102 through the support post 105 from above the nozzle 03b. Thus, dust collection is performed.

[0006]

However, since the cyclone type vertical vacuum cleaner is moved and used, the cyclone device 103 and the fan motor 102 cannot be enlarged. For this reason, fine dust and the like cannot be sufficiently separated, and the dust and the like are exhausted from the exhaust port 110.
There was a problem of low dust collection performance.

[0007] It is an object of the present invention to provide a cyclone type vertical vacuum cleaner capable of improving dust collection performance.

[0008]

According to a first aspect of the present invention, there is provided a fan motor having an intake port and an exhaust port for generating intake air and an inverted conical cyclone. A vacuum cleaner main body portion, a nozzle portion having a suction opening rotatably disposed below the cleaner main body portion and facing the floor and opening, and the suction port and the cyclone. A first suction passage communicating therewith; a second suction passage communicating the cyclone with the suction port; and a return passage for guiding an exhaust flow from the exhaust port to the suction port. .

According to this structure, the intake air generated by the rotation of the fan motor flows into the cyclone from the suction port through the first suction passage. Thereafter, the dust is separated while moving in a spiral shape, and reaches the intake port of the fan motor from the cyclone through the second suction passage. Then, the exhaust air of the fan motor is guided from the exhaust port to the suction port through the annular channel, and is sucked from the suction port together with dust from the floor surface.

According to a second aspect of the present invention, there is provided a cyclone type vertical vacuum cleaner according to the first aspect,
The outlet of the annular flow path is provided in front of the inlet.

According to this configuration, the intake air generated by the rotation of the fan motor flows into the cyclone from the suction port through the first suction passage. Thereafter, the dust is separated while moving in a spiral shape, and reaches the intake port of the fan motor from the cyclone through the second suction passage. Then, the exhaust air of the fan motor is guided from the exhaust port to the front of the suction port through the annular flow path, is blown to the floor surface, and is sucked from the suction port together with dust from the floor surface.

According to a third aspect of the present invention, in the cyclone type vertical vacuum cleaner according to the first or second aspect, at least a part of the return channel is formed by a flexible hose. It is characterized by:

According to a fourth aspect of the present invention, there is provided the cyclone type vertical vacuum cleaner according to any one of the first to third aspects, wherein the first branch is branched from the middle of the path of the annular flow path. A bypass passage communicating with the suction passage is provided.

According to this configuration, the intake air generated by the rotation of the fan motor flows into the cyclone from the suction port through the first suction passage. Thereafter, the dust is separated while moving in a spiral shape, and reaches the intake port of the fan motor from the cyclone through the second suction passage. The exhaust air from the fan motor passes through the return passage from the exhaust port, is guided to the suction port, and is sucked from the suction port together with dust from the floor surface. At this time, a part of the exhaust gas passes through the bypass passage from the return passage to the first passage.
And flows into the cyclone together with the intake air from the suction port.

According to a fifth aspect of the present invention, there is provided the cyclone type vertical vacuum cleaner according to the fourth aspect,
It is characterized in that a flow rate adjusting means for adjusting the flow rate of the bypass path is provided.

According to a sixth aspect of the present invention, there is provided a cyclone-type vertical vacuum cleaner according to the fifth aspect,
The flow rate adjusting means can be operated from outside the cyclone type vertical vacuum cleaner.

According to a seventh aspect of the present invention, there is provided a cyclone type vertical vacuum cleaner according to the sixth aspect,
The flow rate adjusting means is characterized in that the flow rate is adjusted by a horizontal rotation operation.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. 1, 2, and 3 are a schematic perspective view, a schematic front sectional view, and a schematic side sectional view showing a cyclone type vertical vacuum cleaner according to one embodiment. The cyclone-type vertical vacuum cleaner includes a handle body 1 that is held and moved by a user, a cleaner body 2, and a nozzle body 3 that is rotatably supported by the cleaner body 2.

The front surface of the cleaner body 2 can be opened and closed by a lid 2b. An inverted conical cyclone 21 is provided above the inside of the cleaner main body 2, and a detachable dust collection cassette 22 is arranged below the cyclone 21 by a packing 23. A fan motor chamber 20 in which the fan motor 4 is disposed is provided below the dust collection cassette 22, and a suction chamber 20 in which an intake port 4 b of the fan motor 4 is disposed by a packing 26.
a and an exhaust chamber 20 in which an exhaust port 4c of the fan motor 4 is disposed.
b. An opening 20c is provided in the suction chamber 20a.
Is provided, and is communicated with the upper surface of the cyclone 21 by the connection pipe 24.

The bottom surface 3a of the nozzle body 3 is provided with a suction port 3b which opens to face the floor surface. Rotating brush body 3
Numeral 1 is arranged in a suction chamber 3c formed in the front part of the nozzle body 3, is connected to a motor shaft 4a of a fan motor 4 by a belt 32, rotates, and lifts up the floor via a suction port 3b. ing. A connection pipe 34 is connected to the suction chamber 3c, and the connection pipe 34 is connected to an upper side surface of the cyclone 21 via a connection portion 6 by a connection hose 5.

The connecting portion 2 is connected to the exhaust port 4c of the fan motor 4.
One end of a flexible reflux hose 8 is attached via 5. The other end of the reflux hose 8 is connected to a hollow reflux nozzle 36 extending downward and covering the front of the suction chamber 3c, and the outlet 36a at the tip of the reflux nozzle 36 opens toward the front of the suction port 3b. It is provided as follows. By making the return hose 8 flexible, the nozzle body 3 can be rotated, and the inclination angle of the cleaner body 2 can be changed.

In such a cyclone type vertical vacuum cleaner, the suction chamber 3c, the connection pipe 34, the connection hose 5 and the connection portion 6 form a first suction passage A1 for communicating the suction port 3b with the cyclone 21. ing. Also, connection pipe 24,
The opening 20c and the suction chamber 20a form a second suction passage A2 that allows the cyclone 21 to communicate with the suction port 4b of the fan motor 4. Further, the connecting portion 25 and the reflux hose 8
The recirculation nozzle 36 forms a recirculation flow path A3 that connects the exhaust port 4c of the fan motor 4 with the suction port 3b.

When the intake air is generated by the rotation of the fan motor 4, the intake air containing dust sucked from the suction port 3b flows into the upper part of the cyclone 21 through the first suction passage A1. Then, the dust separates while moving downward in a spiral shape, and is deposited in the dust collection cassette 22, and reaches the fan motor 4 through the second suction passage A2. The exhaust gas that has passed through the fan motor 4 is blown from the outlet 36a to the front of the inlet 3b through the return passage A3, and blows up dust on the floor surface and is sucked from the inlet 3b.

Therefore, the fine dust that cannot be separated by the cyclone 21 is sucked from the suction port 3b without being discharged to the outside together with the exhaust gas, and is repeatedly discharged.
, Dust collection performance can be improved, and the cyclone 21 can be reduced in size and weight.
In addition, by arranging the outlet 36a of the recirculation nozzle 36 in front of the inlet 3c, dust on the floor can be blown up and dust can be collected reliably.

In the present embodiment, a bypass 9 is provided on the upper surface of the nozzle body 3 and branches off from the circulation nozzle 36 and communicates with the connection pipe 34. 4A and 4B are cross-sectional views of the bypass 36 in the longitudinal direction and the width direction. The bypass passage 9 has a rectangular cross section, and is provided with a flow control means 10 having a flat valve 91 for controlling the flow in the bypass passage 9 in the middle of the passage.

The valve 91 is integrated with an operation knob 92 provided above the bypass passage 9 via a support shaft 92a, so that the passage of the bypass passage 9 can be blocked by turning the operation knob 92 in the horizontal direction. It has become. Operation knob 9
A pin 94 urged in the direction of pressing the outer wall of the bypass 9 by a compression spring 94 is provided inside the 2, and is fitted with a plurality of concave grooves 9 a provided on the outer wall of the bypass 9. The operation knob 92 can be stopped at a desired rotation position.

Normally, the fan motor 4 is driven in a state where the bypass passage 9 is closed by the valve 91, and cleaning is performed by maximizing the flow rate of the return passage A3. Valve 9 by operating knob 92
When the valve 1 is opened, a part of the exhaust gas passing through the return passage A3 flows through the bypass passage 9 to the first suction passage A1. Thereby, when the wind pressure of the exhaust of the fan motor 4 blown out from the blowout opening 36a is large, the wind pressure is adjusted to prevent the scattering of dust on the floor surface, and the dust collection efficiency can be improved.

[0028]

According to the first aspect of the present invention, fine dust that cannot be separated by the cyclone is sucked from the suction port without being discharged to the outside together with the exhaust gas, and is repeatedly subjected to the cyclone separating action. The performance can be improved, and the cyclone can be reduced in size and weight.

According to the second aspect of the present invention, by disposing the outlet of the return channel in front of the inlet, dust on the floor can be blown up and dust can be reliably collected.

According to the third aspect of the present invention, by making at least a part of the return channel a flexible hose, the nozzle body can be rotated, and the inclination angle of the cleaner body can be changed.

According to the fourth aspect of the present invention, it is possible to suppress the wind pressure of the exhaust air of the fan motor blown out from the outlet, to prevent the dust from scattering on the floor surface, and to improve the dust collection efficiency.

According to the invention of claim 5, when the wind pressure of the exhaust of the fan motor blown out from the blowout port is large,
The wind pressure is adjusted according to the state of the floor surface, and the scattering of dust on the floor surface can be prevented, thereby improving the dust efficiency.

According to the sixth aspect of the invention, the flow rate of the airflow in the bypass can be easily adjusted according to the condition of the floor surface, and the usability can be improved.

According to the seventh aspect of the present invention, since the operation of the flow rate adjusting means is performed by a horizontal rotation operation, it can be easily operated from the outside without error, the operability is good, and the usability is improved. Can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a cyclone type vertical vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a schematic front sectional view showing a cyclone type vertical vacuum cleaner according to an embodiment of the present invention.

FIG. 3 is a schematic side sectional view showing a cyclone type vertical vacuum cleaner according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view illustrating a flow rate adjusting unit of the cyclone type vertical vacuum cleaner according to the embodiment of the present invention.

FIG. 5 is a front view showing a conventional cyclone type vertical vacuum cleaner.

FIG. 6 is a front sectional view showing a conventional cyclone type vertical vacuum cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handle body 2 Vacuum cleaner main body 3 Nozzle body 3b Suction port 3c Suction chamber 4 Fan motor 4b Suction port 4c Exhaust port 5 Connection hose 8 Reflux hose 9 Bypass path 10 Flow control means 20 Fan motor room 21 Cyclone 22 Dust collection cassette 24, 34 Connecting pipe 31 Rotary brush body 36 Recirculation nozzle 36a Blow-out port A1 First suction passage A2 Second suction passage A3 Recirculation flow passage

Claims (7)

[Claims] 1. A cleaner main body having an intake port and an exhaust port for generating intake air and a fan motor and an inverted conical cyclone disposed therein, and rotating below the cleaner main body. A nozzle portion that is freely disposed and has a suction port that opens to face the floor, a first suction passage that connects the suction port and the cyclone, and a second suction path that communicates the cyclone with the suction port. Characterized by comprising a suction passage of (1) and a return flow path for guiding an exhaust gas flow from the exhaust port to the suction port. 2. The cyclone-type vertical vacuum cleaner according to claim 1, wherein an outlet of the return channel is provided in front of the inlet. 3. The cyclone-type vertical vacuum cleaner according to claim 1, wherein at least a part of the return channel is formed by a flexible hose. 4. The cyclone-type vertical cylinder according to claim 1, further comprising a bypass branching from the middle of the annular flow passage and communicating with the first suction passage. Type vacuum cleaner. 5. The cyclone-type vertical vacuum cleaner according to claim 4, further comprising a flow rate adjusting means for adjusting a flow rate of the bypass passage. 6. The cyclone-type vertical vacuum cleaner according to claim 5, wherein the flow rate adjusting means can be operated from outside the cyclone-type vertical vacuum cleaner. 7. The cyclone type vertical vacuum cleaner according to claim 6, wherein the flow rate adjusting means adjusts the flow rate by a horizontal rotation operation.