JP2500516Y2 - Warm air blower for toilet bowl - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a structure of a warm air blower used for blowing warm air and drying it after washing with warm water in a warm water washing toilet seat installed on a toilet seat of a toilet. It is about.

[Prior Art] In recent years, a lot of products using quiet noise as a marketing term have appeared on the back of the trend toward comfort of the market and diversification of living time. Recently, hot water flush toilet seats have become quite popular in toilets. At that time, the dryness, which is one of the functions of the hot water flush toilet seats, is becoming more and more demanded due to the noise reduction during drying.

The inventors of the present invention have been earnestly studying noise reduction mainly on hair dryers and the like, and have provided the results thereof in JP-A-2-5791 and JP-A-2-136599. The former one is provided with a concentric thin-walled cylindrical member at the suction port portion of the case, and the latter one is devised in the member existing in the wind passage.

The hot air blower used for drying the toilet seat with hot water washing has not been improved so far, and it is often said that noise is noisy. In this case, there are two types of noise sources: wind noise caused by moving blades and turbulent noise, and resonance noise caused by vibration of the warm air blower itself and the motor when it is attached to the main body case.

FIG. 3 shows a hot-air blowing device for hot-water washing toilet seats currently in use. Reference numeral 1 is a main body case of a warm water washing toilet seat, 2 is a suction port in the main body case, 3 is a casing of a warm air blower, 4 is a suction port of the casing 3, 5
Is opened at the outlet of the casing 3 into the toilet bowl.
6 is a position where the casing 3 is fixed to the main body case 1,
Reference numeral 7 is a motor, 8 is a motor supporting portion (including guide blades), 9 is a moving blade, and 13 is a heater. In the warm-air blower for a warm water washing toilet seat, when the motor 7 is driven to rotate the moving blades 9, the suction air is sucked into the main body case 1 from the suction port 2.
Air is sucked into the casing 3 through the suction port 4, and the moving blades 9,
The hot air is blown out from the blow-out port 5 by being heated through the guide vanes and the heater 13.

[Problems to be Solved by the Invention] However, it is difficult to say that the air flow is smooth in the above-mentioned axial flow type warm air blowing device. That is, as shown in FIG. 4, the wind flow W ₁ in the casing 3 having the suction port 4 at one end and the blowing port 5 at the other end has a moving blade 9 and a blowing port because the blowing port 5 side is considerably narrowed. It becomes a resistance against the flow of the wind existing between the casing 5 and the shaft 5, and the parallel state with the axis of the casing 3 cannot be maintained, and the stall occurs on the surface of the moving blade 9. A part of the flow W ₂ is in the opposite direction in the range indicated by X, and both flows W ₁ and W ₂ collide in the range indicated by Y to generate a vortex W ₃ . Therefore, this collision causes noise or reduces the air volume.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a warm air blower for a hot water washing toilet seat that has low noise and does not reduce the air volume.

[Means for Solving the Problems] In order to achieve the above object, a warm-air blower for hot-water washing toilet seat of the present invention has a double-passage structure at its suction port and a motor for rotating a rotor blade and a support for this motor. The vibration-proof member is interposed between the motor support portion and the motor support portion, and between the motor support portion and the casing.

[Operation] By having a double structure at the suction port, the main flow that is sucked in and the reverse flow that is the opposite side are prevented from separating and colliding, and the back flow is attracted by the viscosity of the main flow that has been sucked in, and again It will join the main stream. This makes it possible to reduce noise and prevent a decrease in air volume. Further, by providing a vibration isolating member between the motor for rotating the moving blade and the motor supporting portion supporting the motor, and between the motor supporting portion and the casing, vibration from the motor is prevented by the vibration isolating member. Can reduce noise. In other words, the resonance sound of the warm air device itself due to the vibration of the motor, and the resonance sound due to the vibration when the warm air device is attached to the main body case can be reduced by the antivibration member, and the resonance sound unpleasant to the ear can be reduced. Therefore, the noise prevention effect can be further enhanced in combination with the double channel structure.

[Embodiment] An embodiment of a warm air blower for a warm water washing toilet seat according to the present invention will be described below with reference to FIGS. 1 and 2. Reference numeral 1 is a main body case of a warm water washing toilet seat installed on the toilet bowl, and 2 is a suction port of the main body case 1. Reference numeral 3 denotes a casing of the warm air blower, which is attached to the main body case 1. Reference numeral 4 is a suction port of the casing 3. Reference numeral 5 is an outlet of the casing 3, and the outlet 5 is open in the toilet bowl. Reference numeral 6 indicates a position where the casing 3 is fixed to the main body case 1. Reference numeral 7 is a motor, 8 is a motor supporting portion, 9 is a moving blade, and 13 is a heater. The motor support portion 8 is provided with guide vanes. A vibration damping member 10 is interposed between the motor 7 and the motor support portion 8 and between the motor support portion 8 and the casing 3. Reference numeral 11 is a double channel structure section. The double channel structure 11 is configured by mounting a bell mouth 11a on the suction port 4 and mounting a thin cylindrical member 11b between the outer circumference of the bell mouth 11a and the inner circumference of the casing 3. 12
Indicates a gap in the body case 1.

When the motor 7 is driven to rotate the rotor blade 9, the suction port 2 is sucked into the main body case 1, the suction port 4 is sucked into the casing 3, passes through the rotor blade 9, the guide blade, and the heater 13 It is heated by passing through it, hot air is blown out from the outlet 5 into the toilet, and drying after washing with warm water is performed. At this time, the double channel structure portion 11 is attached to the suction port 4.
By providing the suction port 4 as shown in FIG.
The main flow W ₁ sucked from the main flow W ₁ and the reverse flow W ₂ opposite to the main flow W ₂ are prevented from being separated from each other and colliding with each other, and the reverse flow W ₂ is joined to the main flow W ₁ sucked in. In addition to the above action, the bell mouth 11a reliably collects the backflow W ₂ into the main stream W ₁ , and the bell mouth 11a ensures that the moving blade 9
It has the effect of blocking noise in the room. By providing the dual flow path structure 11 in this way, the air volume is increased by 3 to 5%, and under the same air volume, the noise is reduced by 2 to 3 dB.

Further, by interposing the vibration isolating member 10 between the motor 7 and the motor support portion 8 and between the motor support portion 8 and the casing 3, vibration from the motor 3 can be prevented and noise can be reduced. That is, in the conventional example, the vibration of the motor 7 causes the resonance sound to be amplified by the vibration of the motor 7 when it is attached to the warm air blower itself, and further to the main body case 1, resulting in an unpleasant sound to the ear. By interposing the vibration isolating member 10 as described above, the vibration from the motor 7 can be prevented and the resonance sound unpleasant to the ear can be reduced. The vibration-proof member 10 is preferably urethane foam, soft rubber, or the like, but is not limited to these. It is desirable that the space around the vibration damping member 10 is large. Even if the anti-vibration member 10 is wound, the anti-vibration effect will be halved if the casing 3 is tightly closed when the lid is closed. In other words, by winding the antivibration member 10 in a space with a little margin, resonance noise due to vibration can be reduced, and noise can be reduced by 1 to 3 dB. The effect of reducing the noise of the vibration isolating member 10 and the effect of reducing the noise of the dual flow path structure 11 are combined, and there is an effect of reducing the noise level by 4 to 6 dB.

In addition, it is desirable that the gap 12 between the main body case 1 and each part of the casing 3 of the warm air blower has a sufficient space so as not to resist the flow from the suction port 2 of the main body case 1.

[Advantage of the Invention] As described above, the present invention has the double-passage structure at the suction port, so that the main flow sucked from the suction port and the reverse flow opposite to each other are prevented from being separated and collided with each other. It attracts due to the viscosity of the main stream that has been sucked in, and joins the main stream again, which can reduce noise and prevent a reduction in the air volume, and also supports the motor that rotates the rotor blades and this motor. The vibration isolating member is interposed between the motor supporting unit and the motor supporting unit, and again between the motor supporting unit and the casing, so that vibration from the motor can be prevented by the vibration isolating member and noise can be reduced. That is,
The resonance sound of the warm air device itself due to the vibration of the motor and the resonance sound due to the vibration when the warm air device is attached to the main body case,
The vibration-proof member can reduce the noise, and the resonance sound that is unpleasant to the ear can be reduced. Together with the dual flow path structure portion, the noise prevention effect can be further enhanced.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a sectional view for explaining the operation of the main part of the same, FIG. 3 is a sectional view of a conventional example,
FIG. 4 is a cross-sectional view for explaining the operation of the conventional example, where 3 is a casing, 4 is a suction port, 5 is a blowout port, 7 is a motor, 9 is a moving blade, 11 is a double flow path structure portion, 13 Is a heater.

Claims (1)

(57) [Scope of utility model registration request] 1. A straight-line casing having one end side as a suction port and the other end side as a blow-out port is rectified by a rotor blade rotated by a motor along its axial direction and a flow after passing through the rotor blade. In an axial-flow type hot-air-cleaning toilet seat warm air blower equipped with a guide vane that causes hot air to be blown out on the outlet side, the suction port has a double-flow passage structure and a moving blade. A warm air blower for a warm water washing toilet seat, characterized in that a vibration isolating member is interposed between a motor for rotating the motor and a motor supporting portion for supporting the motor, and between the motor supporting portion and the casing.