JPS639444B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hair dryer used for drying hair, styling hair, etc. A conventional hair dryer consists of a heating section made of a nichrome wire or the like and a blowing section made of a fan or the like. However, heating with nichrome wire is inefficient and requires separate mechanisms for heating and blowing air, resulting in a large number of parts. On the other hand, the present inventor has disclosed Japanese Patent Application Laid-Open No. 57-19582,
In a series of subsequent inventions such as JP-A-57-19583, JP-A-57-55378 and JP-A-57-55379, a reduced pressure equilibrium heating method and a drying method or apparatus using the method were proposed.

The basic technology is that the air inside a sealed hollow chamber is forcibly sucked in by the rotation of a rotating body and exhausted to the outside, reducing the pressure inside the room and bringing the pressure difference between the inside and outside into a roughly constant equilibrium. This equilibrium state is maintained, and the rotating action of the rotating body is continued while maintaining this equilibrium state to promote frictional action with the air to generate frictional heat, and this frictional heat heats the inside of the hollow chamber. This is a heating method that uses the rotating action of a rotating body to forcibly suck the air inside a sealed hollow chamber and exhaust it to the outside, reducing the pressure in the room and keeping the pressure difference between the inside and outside at a constant equilibrium state. At the same time, while maintaining this equilibrium state, the rotating action of the rotating body is continued to promote frictional action with the air and generate frictional heat, and this frictional heat heats the inside of the hollow chamber. This is a reduced pressure equilibrium heating method in which outside air is supplied by operation.

The present inventor also proposed a pressurized equilibrium heating method in JP-A No. 57-127779, in which if an exhaust port with a capacity lower than the exhaust capacity of the rotating body is provided in the exhaust, the intake gas is forced to be discharged to the outside. Therefore, it exhibits a kind of pressurizing effect, and is therefore accompanied by the generation of compression heat.
It was also discovered that the temperature could be raised more effectively and warm air could be obtained.

The inventor further disclosed in the patent application "Hot air method and apparatus" dated July 13, 1981 that the device has a gas suction port and a gas discharge port, and rotates with a gas suction capacity larger than the gas suction amount of the gas suction port. We proposed a method to create hot air in succession by sequentially connecting the gas outlet and gas inlet of each hollow body with an airtight structure having a rotating body. Further, in the same application, a plurality of rotating bodies having a gas inlet and a gas exhausting capacity larger than the gas inlet and the gas exhausting capacity of the gas inlet and the gas exhausting capacity of the gas inlet and the gas outlet, respectively, are arranged in a hollow body of an airtight structure having a gas inlet and a gas outlet. hollow body,
We proposed a method to create hot air by sequentially connecting the gas outlet and gas inlet of each hollow body. In both methods, even if the capacity of the other rotating bodies is lower than the capacity of the rotating body closest to the intake side, the overall hot air production capacity of the device is still higher than when rotating bodies of the same capacity are used. I also found that there was no difference. In addition, when three or more hollow chambers are connected,
It has also been found that even if the capacities of the rotating bodies are gradually lowered starting from the intake side, the hot air production capacity of the entire apparatus is the same as when the capacities of all the rotating bodies are made the same.

Based on these findings, it is an object of the present invention to provide a hair dryer that consumes less power, is more efficient, and has fewer parts.

That is, the present invention limits the amount of gas sucked into the gas inlet and/or the amount of gas discharged from the gas outlet to less than the gas suction and exhaust ability obtained by the rotation of the rotating body provided in the hollow body. Then, due to the retention effect of the intake gas based on the rotation within the rotation area of the rotating body and the constant pressure effect of depressurization or pressurization, the gas is heated by a friction phenomenon, etc., and this is obtained as hot air. It provides a hair dryer with

The heat generation principle of the present invention is disclosed in the following publications. To give an example, Special Principal Shoji 58-47621 Supportenal Competition forced Convolvement Heat Heating Method and its device Special Device 58-47622 Special Prince of Air Transitional Mechanisms in the heating equilibrium heating device, 58-47623 Rotating heat generation mechanism in the heat -generator in the heat -pressure equilibrium heating device 1986-14163 Grain storage and drying warehouse Special Publication 1982-22263 Special Publication 1982-22263 Vacuum drying equipment Special Publication 1982-22264 Special Publication 1982-52342 Special Publication 59-52342 Special Publication 59-52342 Special Publication 59-52753 Special Publication 59-52753 Vacuum-equilibrium heating drying method and its equipment Special Publication 59th -47821 Pressure balanced heating method Special Publication 1986-9822 Heat source equipment Special Publication 1986-37428 Evaporative moisture condensation and drainage mechanism in reduced pressure balanced heating and drying equipment Special Publication 1982-5870 Special Publication 1982 - External air diffusion introduction device in reduced pressure balanced heating and drying equipment 4625 Special Publication on Heat Source Equipment 1986-52756 Special Publication on Device for Condensation Removal of Vaporized Moisture in Dryer 1986-12544 Special Publication on Amplification of Generated Heat in Vacuum Drying Method 1982-21185 Special Publication on Reduced Pressure Equilibrium Swirling Convection Heating Method 1986-22265 Decompression Equilibrium swirl convection heating and drying method and its apparatus Special Publication No. 1983-47620 Water heating equipment, etc.

The following is a first diagram showing a central cross section of an embodiment of the present invention.
The description will be made with reference to FIG. 2, which shows a central cross section of another embodiment.

1 is a hair dryer; hair dryer 1
has an intake port 2, an exhaust port 3, and a grip portion 4.

In this embodiment, the hair dryer is a handy type, but a fixed type that completely covers the head may also be used. 5 is a hollow body having an airtight structure, and has a gas inlet 6 and a gas outlet 7. The gas outlet 7 has a larger opening area than the gas inlet 6. 8 is a rotating body, which is composed of rotating blades such as a propeller fan or a Shirotsuko fan. The rotating bodies 8 each have an electric motor 9 installed in each hollow body 5.
It can be rotated in a direction in which gas can be sucked in from the gas inlet 6 and gas can be discharged from the gas outlet 7.
In a hair dryer having one hollow chamber 5 as shown in FIG. 1, the gas inlet of the hollow body 5 is connected to the inlet of the hair dryer 1, and the gas outlet 7 is connected to the exhaust port 3. When connecting a plurality of hollow bodies as shown in Fig. 2, the gas outlet 7 and gas inlet 6 of each hollow body 5 are successively connected in a sealed state, and the gas outlet of the hollow body on the most exhaust side is connected. 7 is connected to the exhaust port 3 of the hair dryer, and the gas inlet 6 of the hollow chamber on the most intake side is connected to the inlet port 2 of the hair dryer. g is a minute gap formed between the inner wall of the hollow body 5 and the rotating body 8, and R is the rotation area of the rotating body 8.

The opening area of the gas inlet 6 is set so that the gas suction capacity of the gas inlet 6 formed in each hollow body is larger than the gas suction capacity of the rotating body 8 installed in the corresponding hollow body during normal rotation. It is necessary to set it. In this embodiment, the gas exhaust ports are further arranged such that the gas exhaust capacity during normal rotation of the rotating body 8 installed in the corresponding hollow body is greater than the gas exhaust capacity of the gas exhaust ports 7 formed in each hollow body. Set the opening area of 7.

In the embodiment shown in FIG. 2, the capacity of each rotating body 8 decreases from the intake port side to the exhaust port side, and the output of each electric motor 9 that rotates the rotating body 8 is It is about 1/2 that of a motor. In other words, the ratio of the output of each electric motor is approximately 3 to 4:2 from the intake port side to the exhaust port side.
It is 1.

Therefore, when the rotating body 8 is rotated by the electric motor 9,
The gas flows from the intake port 2 to the hollow body 5 via the gas intake port 6.
flow inside. At this time, since the opening area of the gas inlet 8 is limited to the gas suction capacity of the rotating body 8 installed in the corresponding hollow body 5, the rotating body 8
The amount of gas sucked in is smaller than the gas discharged by the rotating body 8, and the pressure in the rotation region R of the rotating body 8 is reduced compared to other parts, and the pressure in the hollow body as a whole is also reduced. The pressure difference between the rotational region R and other parts, and the pressure difference between the hollow interior and the outside air will gradually increase, but once a certain pressure difference is reached, the pressure difference will approximately decrease due to the relationship with the gas flowing into the vicinity of the rotational region R. equilibrium is reached,
Maintain this constant pressure state. In this equilibrium state and constant pressure state, the pressure difference between the inside and outside of the rotation region R is
This equilibrium and constant pressure state is determined by the magnitude of the rotational suction and exhaust force of the gas intake port 6, the size of the opening area of the gas inlet 6, the size of the minute gap g, etc. will be maintained as long as you do so. In this equilibrium state, a phenomenon of air stagnation occurs in the rotation region R of the rotor 8, and the frictional action continues repeatedly between the rotor 8 and the accumulated gas, so that frictional heat is generated and the temperature gradually rises. The warm air heated by this frictional heat passes through a small gap g, is discharged from the gas discharge port 7 to the exhaust port 3, and is blown onto the hair. If the opening area of the gas exhaust port 7 is set to a smaller exhaust capacity than the exhaust capacity of the rotating body 8, the gas sucked into the hollow body 5 will be forcibly discharged to the outside. 7 exhibits a kind of pressurizing effect, and is accompanied by the generation of compression heat, making it possible to further increase the exhaust gas temperature. When a plurality of hollow bodies 5 are arranged in succession as shown in FIG. 2, the temperature can be increased stepwise to make the final exhaust temperature high. In this case, if the opening area of the gas outlet of each hollow body 5 is set to have a smaller exhaust capacity than the exhaust capacity of the rotating body 8 installed in the hollow body, the pressure near the gas outlet 7 tends to increase. However, since the air is taken in by the rotary body 8 installed in the hollow body 5 adjacent to the continuous exhaust side, the area near the gas discharge port of the hollow body 5 on the most exhaust side eventually becomes high pressure, and a kind of It exhibits a pressurizing effect, and the temperature rises more effectively with the generation of compression heat.

In the case of three consecutive hollow bodies, if the electric motor 9 installed in each hollow body and driving the rotating body has the same capacity, the pressure inside each hollow body 5 will increase as it goes from the intake port side to the exhaust port side. It changes as 1:1/2:1/3. As shown in FIG. 2, the output ratio of each electric motor 9 is increased from the intake port side to the exhaust port side.
When the outputs of the electric motors 9 are made the same, there is almost no difference in the temperature of the warm air that is finally obtained when the outputs of the electric motors 9 are made the same. In this case, the opening area of the gas inlet 6 of the hollow body 5 on the most intake side needs to be of a size that can create a reduced pressure equilibrium state in the rotation region R of each rotating body. Therefore, the present invention provides a hair dryer that efficiently generates hot air in a constant pressure equilibrium state and that is efficient and has a small number of parts.

[Brief explanation of the drawing]

FIG. 1 is a central sectional view of an embodiment of the invention, and FIG.
The figure is a central sectional view of another embodiment. 1...Hair dryer, 2...Intake port, 3...
Exhaust port, 4... Grip, 5... Hollow body, 6... Gas inlet, 7... Gas outlet, 8... Rotating body, 9...
...Electric motor, g...minor gap, R...rotation area.

Claims (1)

[Claims] 1. A hair dryer having an intake port and an exhaust port, the hair dryer having a gas intake port and a gas exhaust port,
A hair dryer's air inlet is a hollow body with an airtight structure that has a rotating body that rotates with a gas suction capacity greater than the gas suction capacity of the gas inlet and generates heat due to the rotational action in the rotating region of the rotating body while maintaining a constant pressure equilibrium state. and a hair dryer characterized by being provided between the exhaust ports. 2. In a hair dryer having an intake port and an exhaust port, the rotating body has a gas intake port and a gas discharge port, and rotates with a gas suction capacity greater than the gas suction capacity of the gas intake port, while maintaining a constant pressure equilibrium state. A plurality of hollow bodies are installed between the intake and exhaust ports of the hair dryer by sequentially connecting the gas outlet and gas inlet of each hollow body with an airtight structure having a rotating body that generates heat through rotational action. A hair dryer characterized by: 3. The hair dryer according to claim 2, wherein the plurality of hollow rotating bodies installed have the greatest gas suction capacity for the rotating body on the most suction side. 4. The hair dryer according to claim 2, wherein the gas suction capacity of the plurality of hollow rotating bodies decreases from the most inlet side to the most exhaust side. 5. A hair dryer having an intake port and an exhaust port, which has a gas intake port and a gas discharge port, and rotates with a gas suction and discharge capacity greater than the gas suction capacity of the gas intake port and the gas discharge capacity of the gas discharge port, and is in a constant pressure equilibrium state. 1. A hair dryer characterized in that a hollow body having an airtight structure and having a rotating body that generates heat by rotational action in a rotating region of the rotating body while maintaining the same is provided between an intake port and an exhaust port of the hair dryer. 6. A hair dryer having an air intake port and an exhaust port, having a gas intake port and a gas exhaust port,
An airtight structure having a rotating body that rotates with a gas suction and discharge capacity greater than the gas suction capacity of the gas inlet and the gas discharge capacity of the gas outlet, and that generates heat due to rotational action in the rotating region of the rotor while maintaining a constant pressure equilibrium state. A hair dryer characterized in that a plurality of hollow bodies are installed between the air intake and exhaust ports of the dryer by sequentially connecting the gas outlet and gas intake of each hollow body. 7. The hair dryer according to claim 6, wherein the gas suction capacity of the plurality of hollow rotary bodies installed is the highest in the rotary body on the intake side. 8. The hair dryer according to claim 6, wherein the gas suction capacity of the plurality of hollow rotating bodies decreases sequentially from the most intake side to the most exhaust side.