JP2634006B2 - Electric hot air heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air heater, in which a hot air heater and a blower for blowing air heated by the hot air heater are disposed in a main body of the hot air heater. The present invention relates to an electric hot-air heater provided with a blower duct for guiding to an outlet provided in the hot-air heater main body.

[0002]

2. Description of the Related Art An example of a conventional electric hot air heater will be described with reference to FIG. The conventional electric hot air heater includes a hot air heater 42 disposed in a hot air heater main body 41, a blower 43 for blowing air heated by the hot air heater 42, and a blower 43. A blowing duct 45 for guiding the warm air to an outlet 44 provided on the front surface of the warm air heater main body 41;
And a humidifier 46 disposed in the air duct 45.

The main body 41 of the warm air heater is formed in a box shape, the outlet 44 is provided at the lower front part of the main body 41 of the warm air heater, and the suction port 48 with a louver 47 is provided at the upper rear part. Was arranged. As the warm air heater 42, a ceramic heater having a positive self-temperature control function was used. The hot air heater 42 was disposed below the blower 43 and was installed in the blower duct 45 together with the blower 43.

[0004] The blower 43 comprises a motor 50 installed on a front wall 49 of a blower duct 45 and a fan 51 fixed to a motor shaft of the motor 50. The air duct 45 was formed in a substantially L-shape and communicated with the air outlet 44, and an opening 53 communicating with the suction port 48 was formed in an upper rear wall 52 of the air duct 45.

The humidifier 46 is of an infrared type and is disposed on the side of the air outlet 44 of the air duct 45. The humidifying device 46 includes a rod-shaped humidifying heater 54 made of ceramic having a good infrared emissivity, and a humidifying heater 5.
The humidifying heater 54 was provided with a reflection plate 55 having a high reflectivity disposed on the upper part of the humidifying heater 54 and a water tank 56 disposed below the humidifying heater 54. The humidifying device 46 includes a humidifying heater 5.
When electricity is supplied to the air duct 4, heat rays from the humidifying heater 54 and the reflecting plate 55 are radiated and absorbed by the water surface in the water tank 56, and
5 was generating water vapor. In the figure, reference numeral 57 denotes a water supply tank for supplying water to the water tank 56.

In the above configuration, the air heated by the warm air heater 42 is blown as warm air by the blower 43 and blown out of the outlet 44 through the blow duct 45. On the other hand, the humidifying device 46 humidifies the heat rays from the humidifying heater 54 and the reflecting plate 55 to the water surface in the water tank 56 to be absorbed and generate steam.

[0007] In the electric hot air heater of the above configuration, 100 V, 15 A electricity is generally supplied to the home, but only about 1 kW of hot air heater can be used in order to stably supply electricity. As a result, there was a problem that the heating capacity was only about 860 kcal / h, a hot air with a high calorific value could not be obtained, and the quick heat property (quick heating at the start of heating) was poor.

In order to solve this problem, the applicant has proposed an electric warm air heater as disclosed in Japanese Patent Application No. 3-70185. The following describes this Japanese Patent Application No. 3-70185. The hot air heater 4 provided in the hot air heater main body 41 will now be described.
2, a blower 43 for blowing air heated by the warm air heater 42, and a blower duct 45 for guiding warm air from the blower 43 to an outlet 44 provided in the warm air heater main body 41. A humidifier 46 disposed in the air duct 45; a humidifier 46 in the air duct 45;
4 and a moisture adsorption type heat storage device 58 disposed between the heat storage device 58 and the heat storage device 58.

The warm air heater main body 41 is formed in a box shape, the outlet 44 is disposed at the lower front part of the warm air heater main body 41, and the inlet 4 with the louver 47 is provided at the rear upper part.
Eight were arranged. The warm air heater 42 is provided below the blower 43 and is disposed together with the blower 43 in the blower duct 45. The blower 43 includes a motor 50 installed on a front wall 49 of a blower duct 45 and a fan 51 fixed to a motor shaft of the motor 50.

The ventilation duct 45 is formed in a substantially L-shape and communicates with the outlet 44. An opening 53 communicating with the suction port 48 is formed in an upper rear wall 52 of the ventilation duct 45. Was. The humidifier 46 includes a water tank 56 provided in communication with the air duct 45 and a water tank 5.
6 was provided with an ultrasonic oscillator 59 provided at the bottom portion, and an ultrasonic oscillator 60 for oscillating the ultrasonic oscillator 59.

The heat storage device 58 is provided with mesh-shaped partition plates 61 and 62, a moisture adsorption type heat storage material 63 accommodated between the partition plates 61 and 62, and disposed in the moisture adsorption type heat storage material 63. Heater 64 for use, a cylinder 67 having a hot air inlet 65 and an outlet 66 at the front and back, a heat insulating material 68 covering the outer surface of the cylinder 37, and moisture condensed in the cylinder 67. And a water supply tank 57 for returning the water to the water tank 56 of the humidifier 46.

In the electric hot air heater described above, at the start of heating, the hot air from the hot air heater 42 and the blower 43 is blown out from the outlet 44 through the blower duct 45 and the heat storage device 58.

On the other hand, the ultrasonic oscillator 60 of the humidifier 46 operates to atomize the water in the water tank 56 by the ultrasonic oscillator 59, and the atomized water is heated by the hot air from the blower 58. The inside of the air duct 45 is sent to the outlet 44 side, and the atomized moisture is adsorbed by the moisture adsorption type heat storage material 63 of the heat storage device 58, and the moisture adsorption type heat storage material 63 generates heat to generate the hot air. Rapid heating was performed as hot air with a higher calorific value.

[0014]

However, in the above electric hot air heater proposed by the present applicant,
The humidifier 46 and the water supply tank 57 are required to generate heat from the heat storage device 58, and the size of the electric hot air heater becomes large, and it is necessary to supply water to the water supply tank 57. If the user forgets to insert the hot air, there is a problem that it is not possible to obtain hot air having a high calorific value when rapid heating is required, such as at the start of heating.

The electric hot air heater of the present invention has been made in view of the above problems, and does not require the humidifier 46 and the water supply tank 57. Therefore, the electric hot air heater can be downsized, and rapid heating is required. It is an object of the present invention to be able to always obtain a high calorie of warm air at any time.

[0016]

In order to achieve the above object, an electric hot air heater of the present invention sends a hot air heater to a main body of a hot air heater and air heated by the hot air heater. A blower duct, which guides hot air from the blower to an outlet provided in the main body of the hot air heater, and generates heat when moisture is adsorbed in the duct. A heat storage material and a sensible heat type heat storage material having a larger volume specific heat than the moisture adsorption type heat storage material are provided as auxiliary heat sources.

[0017]

In the electric warm air heater of the above construction, the moisture adsorption type heat storage material adsorbs moisture in the air to generate heat, and stores heat of the moisture adsorption type heat storage material and sensible heat type heat storage material. The heat further heats the hot air blown by the hot air heater and the blower to generate a high calorie hot air and perform rapid heating at the start of heating or the like.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the electric hot air heater of the present invention will be described with reference to FIG. The electric hot air heater of the present invention includes a hot air heater 2 disposed in a hot air heater main body 1, a blower 3 for blowing air heated by the hot air heater 2, and a blower 3 A blower duct 5 for guiding warm air from the air blower 4 to an outlet 4 provided in the warm air heater main body 1 and a heat storage device 6 disposed in the blower duct 5 are provided.

The hot air heater main body 1 is formed in a box shape, and the outlet 4
Is provided, and a suction port 8 with a louver 7 is provided on the upper rear surface.

As the warm air heater 2, a ceramic heater having a positive self-temperature control function is used. The hot air heater 2 is provided below the blower 3 and is provided together with the blower 3 in the blower duct 5.

The blower 3 has a front wall 9 of the blower duct 5.
And a fan 11 fixed to the motor shaft of the motor 10.

The ventilation duct 5 communicates with the heat storage device 6, and an opening 13 communicating with the suction port 8 is formed in the upper rear wall 12.

The heat storage device 6 includes mesh-shaped partition plates 14 and 15, a moisture-adsorption type heat storage material 16 that generates heat when absorbing moisture stored between the partition plates 14 and 15, A heat storage material mixed with a sensible heat storage material 17 having a larger volume specific heat than the material 16, and a regeneration heater 18 disposed in the moisture adsorption type heat storage material 16 and the sensible heat storage material 17. , A cylindrical body 21 having a hot air inlet 19 and a blow-out port 20 before and after, and a heat insulating material 22 covering the outer surface of the cylindrical body 21.

The moisture storage type heat storage material 16 is made of zeolite,
There are activated alumina, silica gel, etc., but in the examples, synthetic zeolite (4 to 8 mesh particles) is used.
In this case, the synthetic zeolite has a water adsorption of about 15 to 20% of its own weight, and about 750 Kca per kg of the adsorbed water.
and a specific heat of about 200 kcal / m ³ ° C
(A packing density of about 800 kg / m ³ ) is used.

The synthetic zeolite can be regenerated and reused. However, the zeolite is heated to about 300.degree. Moisture (in other words, heat storage).

The sensible heat storage material 17 may be a heat storage material having a specific heat greater than the specific heat of volume of the water adsorption type heat storage material 16 of about 200 kcal / m ³ ° C (filling density of about 800 kg / m ³ ). For example, as this heat storage material,
Magnesia brick (specific heat of about 600 kcal / m
Brick such as ³ ° C., bulk specific gravity of about 2,700 kg / m ³ ) and chamotte brick (bulk specific heat of about 400 kcal / m ³ ° C., bulk specific gravity of about 1,900 kg / m ³ ) are pure alumina refractories (volume specific heat of about 800 kcal / m ³ ). m ³ ℃, bulk specific gravity about 3,
200 kg / m ³ ), etc., and it is possible to store more sensible heat as much as the specific heat is larger. Heat can be stored.

The operation of the electric warm air heater having the above configuration will be described. At the start of heating, warm air from the warm air heater 2 and the blower 3 is blown from the outlet 4 through the blower duct 5 and the heat storage device 6. At this time, the moisture adsorption type heat storage material 16 of the heat storage device 6 absorbs moisture contained in the air to generate heat, and further heats the hot air passing through the heat storage device 6.

The adsorption of water generates heat by adsorbing water contained in the air, and the air contains about 2.4 g or more (about 0.2% or more in air, usually about since water over 4g indoors) is contained in the air 1 m ^3,
The water in the air is adsorbed. Then, for example, when the warm air from the blower 3 is sent at an air flow rate of 1 m ³ / min, the moisture adsorption type heat storage material is adsorbed at 3 kcal / m 3 by adsorption.
Generate heat in.

However, since the amount of heat generated by the moisture adsorption type heat storage material 16 is generated by the adsorption of moisture in the air, it is smaller than that using water vapor from a humidifier. The heat is compensated by the sensible heat stored in the material 17, and simultaneously with the heating by the moisture adsorption type heat storage material 16, the hot air is simultaneously heated by the sensible heat stored in the sensible heat type heat storage material 17 of the heat storage device 6. I do. Therefore,
Heated by the heat of both the moisture adsorption type heat storage material 16 and the sensible heat type heat storage material 17, hot air having a high calorific value is blown out from the outlet 4.

As a result, the power supply in ordinary households is usually one.
Although the heating value was only about 860 kcal / h due to 00 V and 15 A, the heat of the moisture adsorption type heat storage material 16 and the sensible heat type heat storage material 17 caused a high heat value, for example, 1.600.
kcal / h hot air can be generated for about 30 minutes to 1 hour, and rapid heating can be performed when the room temperature is low, for example, on a cold morning.

Further, the power load can be leveled by regenerating the moisture adsorption type heat storage material 16 using the midnight power and storing the heat in the sensible heat type heat storage material 17.

As shown in FIG. 2, the heat storage device 6 includes a moisture adsorption type heat storage material 16 and a sensible heat type heat storage material 17 which are distinguished from each other by mesh-shaped partition plates 23 and 24, respectively.
A configuration may be adopted in which a regeneration heater 18 is provided close to the moisture adsorption type heat storage material 16.

As shown in FIG. 3, the moisture-absorbing heat storage material 16 and the sensible heat storage material 17 are separately provided by mesh-shaped partition plates 23 and 24, respectively. A configuration in which a heater 18 for regeneration is provided in the inside is also possible.

[0034]

According to the electric hot air heater of the present invention, a warm air heater and a blower for blowing air heated by the warm air heater are provided in the warm air heater main body. An air duct is provided for guiding the warm air to an outlet provided in the warm air heater main body, and a moisture adsorption type heat storage material that generates heat when moisture is adsorbed in the air duct, and a water adsorption type heat storage material. By disposing a sensible heat storage material having a large specific heat as an auxiliary heat source, there is no need to provide a humidifying device and a water supply tank for supplying moisture to the moisture adsorption type heat storage material to the moisture adsorption type heat storage material. In addition, it is possible to make the hot air heater main body compact without increasing the size thereof, and it is possible to always obtain hot air having a high calorific value when rapid heating is desired.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of an electric hot air heater according to the present invention.

FIG. 2 is a cross-sectional view of a main part showing another embodiment of the heat storage device of the electric hot air heater according to the present invention.

FIG. 3 is a cross-sectional view of a main part showing another embodiment of the heat storage device of the electric hot air heater according to the present invention.

FIG. 4 is a cross-sectional view showing an electric hot air heater proposed by the present applicant to solve the problem of the conventional electric hot air heater.

FIG. 5 is a sectional view showing an example of a conventional electric hot air heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot-air heater main body 2 Hot-air heater 3 Blower 4 Outlet 5 Blow duct 6 Heat storage device 14 Partition plate 15 Partition plate 16 Moisture absorption type heat storage material 17 Sensible heat type heat storage material 18 Regeneration heater 19 Suction port 20 Blow-out port

Claims (1)

(57) [Claims] 1. A hot air heater, wherein a warm air heater and a blower for blowing air heated by the warm air heater are provided in the warm air heater main body, and the warm air from the blower is supplied to the warm air heater main body. An electric warm air heater provided with a blower duct for guiding an air outlet provided in a blower duct, comprising: a moisture-absorbing heat storage material that generates heat when moisture is adsorbed in the blower duct; An electric warm air heater characterized by arranging a sensible heat type heat storage material having a large size as an auxiliary heat source.