JPH04343823A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide such a vacuum cleaner that the clogging of a dust collecting bag can be recognized from the outside. CONSTITUTION:A vacuum cleaner is comprised of a dust collecting room 13 located inside vacuum cleaner main bodies 10,11, a motor fan 18 which sucks air from an air inlet 25 through the dust collecting room 13, a panel 24 covering a circuit room 22 enclosing circuit components 23 therein, and a transfer means 33 which communicates with the inside of a motor room 14 enclosing the motor fan 18 therein and which is adapted for transferring exhaust heat; the panel 24 is heated and discolored by the heat of the transfer means 33. Since the panel 24 is provided which is heated and discolored by the heat of the transfer means 33, the clogging of a dust collecting bag can be recognized from the outside and also the number of the part items can be reduced because of simple structure and the vacuum cleaner can be provided at low cost.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner in which the degree of accumulation of dust in a dust collection bag can be checked based on the exhaust temperature.

0002

2. Description of the Related Art Conventionally, a dust collection amount display device of this type of vacuum cleaner has a structure as shown in FIGS. 5 and 6, for example.

Namely, 1 is a lid that removably covers the upper opening of the dust collection chamber, 1a is a window provided in 1, and 2 is a transparent lid that communicates with window 1a at one end and communicates with the dust collection chamber at the other end. An indicator pipe, 2a is a sliding part that is integrally formed with the indicator pipe 2 and has a slightly larger diameter than the small diameter part 3a at the tip of the pointer 3, and 4 is a sliding part that comes into contact with the pointer 3 sliding inside the pipe 2 and causes the pointer 3 to move. A spring that urges the small diameter portion 3a to fit into the sliding portion 2a of the pipe 2; 5 is a ring-shaped indicator lid for receiving the spring 4; 6 is the indicator pipe 2;
This is a packing to improve the tightness between the lid 1 and the lid 1.

[0004] The operation of the above configuration will be explained. window 1a
The small diameter portion 3a of the pointer 3 moves inside the sliding portion 2a according to the pressure difference between the atmospheric pressure acting on one side of the pointer 3 through the indicator cover 5 and the negative pressure inside the dust collection chamber acting on the pointer 3 from the other side through the indicator cover 5. By sliding, it serves as an indicator.

[0005]

[Problems to be Solved by the Invention] In such a conventional vacuum cleaner, the small diameter portion 3a of the pointer 3 and the sliding portion 2 of the pipe 2
Air leaks from the gap between a and the blower (not shown).
The suction power of the device decreases, making it impossible to demonstrate its full potential.

[0006] As a countermeasure, it may be possible to reduce the gap between the small diameter portion 3a of the pointer 3 and the sliding portion 2a of the pipe 2, but in this case, the fine dust entering through the window 1a will clog in the gap and interfere with the movement of the pointer. There was a problem that it caused defects.

[0007] The present invention has been made to solve these conventional problems, and aims to provide a vacuum cleaner that is simple in structure and capable of displaying the amount of collected dust without malfunction, without deteriorating its performance. There is.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the vacuum cleaner of the present invention includes a dust collection chamber provided in the vacuum cleaner body, and a motor that sucks air from an intake port through the dust collection chamber. A transmission means comprising a fan and a panel covering a circuit chamber housing circuit components, communicating with the motor chamber housing the motor fan to transmit exhaust heat, and heating and discoloration due to the heat of the transmission means. It has a panel,
Furthermore, in addition to the panel that changes color when heated, display means that changes color due to the heat of the transmission means is provided inside the dust collection chamber, and a window is provided through which the display means can be checked from the outside.

[0009]

[Function] In the above configuration, when the exhaust temperature of the motor fan rises, the transmission means is heated, and when the heat is transferred to the panel, it changes color, so it is possible to check the clogging status of the dust collection bag from the outside. Further, since the display means changes color when the heat from the transfer means is transferred to the display means, it is possible to check whether the dust collection bag is clogged from the outside through the window.

0010

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the vacuum cleaner is composed of an upper body 10 and a lower body 11, and is divided by a partition wall 12 into a dust collection chamber 13 and a motor chamber 14. A dust collection bag 15 for capturing dust in the suction air is housed in the dust collection chamber 13, and is detachably attached by a rotatable stopper 16. The dust collection chamber 13 is opened and closed with a lid 17, and the dust collection bag 15 can be taken in and taken out. A motor fan 18 is housed in the motor chamber 14, and includes a front support 20 that maintains air tightness between the communication port 19 formed in the partition wall 12 and the motor fan 18, and a rear support 21 attached to the rear of the motor fan 18. The upper main body 10 and the lower main body 11 are fixed via. 22 is a circuit chamber containing a circuit 23 for controlling the motor fan 18, and 24 is a panel covering the circuit chamber 22. 25 is an intake port to which the hose 26 is connected, 27 is an exhaust port, and the motor fan 1
The air sucked in by
After entering the interior and filtering out dirt, it passes through the communication port 19 and reaches the motor fan 18 . The exhaust of the motor fan 18 is
It passes through the sound deadening material 28 on the outer periphery of the motor fan, further passes through the filter 29 attached to the front part of the exhaust port 27, and is discharged from the exhaust port 27. 30 is a packing that maintains an airtight relationship between the lid 17 and the main body, and 32 and 33 are casters and rollers for moving the main body, respectively.

Describing the main parts of the present invention in detail, the panel 24 has a part of its surface coated with a paint such as a liquid crystal-containing paint that changes color depending on the temperature.
The heat transfer means 33 in contact with the motor chamber 14 is exposed to the motor chamber 14.

[0013] The operation of the above configuration will be explained as follows.
When the vacuum cleaner is operated, the exhaust temperature of the motor fan 18 rises, but when there is no dust accumulated in the dust collection bag 15, the air passes through the dust collection bag 15 smoothly, so the motor fan 18 is cooled appropriately. The exhaust temperature rise value is approximately 5
It is 0°C. When dust accumulates in the dust collection bag 15 and the dust collection bag becomes clogged, it becomes difficult for air to pass through, reducing the suction power and reducing the cooling effect of the motor fan 18. Therefore, the exhaust gas temperature is higher than normal, and the increase value is approximately 70°C. The above exhaust temperature is determined by the heat transfer means 33.
The color is transmitted to the panel 24 via the paint, and the panel 24 changes its color at any time due to the action of the paint in response to the change in the exhaust temperature. Moreover, since the heat transfer means 33 is provided in the upper part of the motor room, the panel 24 can quickly respond to the high temperature of the motor room 14 because it gathers in the upper part. Therefore, the user can easily determine whether the vacuum cleaner is in operation and whether the dust collection bag is full by looking at the panel 24.

In this case, there is no reduction in suction force due to air leakage as in the conventional case, and cleaning can be performed with strong suction force. Of course, the above action is not caused by the panel 24 but by the upper body 1.
It goes without saying that the same effect can be obtained by directly coating the paint on the 0 or the lower body 11, but the point is that the exhaust temperature of the motor fan 18 is transmitted to the external parts, and that part or a part of the part is heated. It is sufficient if the color changes to indicate that the dust collection bag 15 is clogged. Therefore roller 3
The above-described display may be performed by transmitting heat to the roller 32 and changing color of the roller 32.

The same effect can also be obtained by impregnating the exhaust filter 29 with a paint that changes color depending on the temperature.

FIGS. 3 and 4 show other examples,
The difference from the previous embodiment is that instead of the panel 24 that changes color due to heat, the dust collection area 34 is impregnated with paint that changes color depending on the temperature, and a transparent window 35 is provided in a part of the lid 17 so that confirmation can be made. This is how it was done.

That is, when the exhaust temperature of the motor fan 18 rises to a temperature higher than normal, the fan motor chamber 1
4 and the transmission means 36 forming one side wall of the dust collection chamber 13 are heated, and the dust collection bag 34 is heated and changes color due to the action of the paint. According to this configuration, the user can check whether the dust collection bag 34 is abnormally clogged through the transparent window 35.

Note that the same effect can be obtained by providing another member that changes color due to heat in the dust collecting chamber 13 instead of the dust collecting bag 34.

[0019]

As described above, according to the vacuum cleaner of the present invention, there is provided a transmission means that communicates with the motor chamber housing the motor fan and transmits exhaust heat, and a panel that is heated and discolored by the heat of the transmission means. With this configuration, the clogged state of the dust collection bag can be confirmed from the outside, and since it has a simple structure, the number of parts can be reduced, and it can be realized at low cost.

[Brief explanation of drawings]

FIG. 1: A sectional view of essential parts of a vacuum cleaner according to an embodiment of the present invention.

[Fig. 2] External perspective view of a vacuum cleaner according to an embodiment of the present invention.

[Figure 3]
A sectional view of main parts of a vacuum cleaner according to another embodiment of the present invention

[Figure 4]
External perspective view of a vacuum cleaner according to another embodiment of the present invention

[Figure 5]
Cross-sectional view of main parts of a conventional vacuum cleaner

[Fig. 6] Cross-sectional view of main parts of a conventional vacuum cleaner

[Explanation of symbols]

10 Upper body 11 Lower body 13 Dust collection room 14 Motor room 18 Motor fan 24 Panel 25 Intake port 33 Transmission means

Claims (2)

[Claims] [Claim 1] A vacuum cleaner comprising: a dust collection chamber provided in a vacuum cleaner body; a motor fan that sucks air from an intake port through the dust collection chamber; and a panel covering a circuit chamber housing circuit components; A vacuum cleaner comprising a transmission means communicating with a motor chamber housing the motor fan and transmitting exhaust heat, and a panel that is heated and discolored by the heat of the transmission means. 2. The dust collection chamber according to claim 1, further comprising a display means that changes color due to the heat of the transmission means, except for the panel that changes color when heated by heat, and a window that allows the display means to be checked from the outside. Vacuum cleaner.