JP2947076B2 - Heat storage electric heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage electric heating apparatus for heating room air by an electric heater and also by a heat storage element to perform hot air heating.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a heat storage electric heating apparatus of this type has a heat storage body 1 for storing heat, heats and stores the heat storage body 1, and heats heating air to warm air. A radiant heater 2, and a regenerator air passage 3 provided around the regenerator 1 for exchanging heat for heating with warm air with the amount of heat stored in the regenerator 1, and further including the radiant heater 2 therein. It is composed of a blower 4 for feeding heating air into the regenerator air passage 3, a radiant heater 2 according to an operation mode, a control unit 5 for controlling the blower 4, and a hot air outlet 6 for blowing hot air. I was

In the above configuration, when heat is stored in the heat storage body 1, the control unit 5 supplies power to the radiant heater 2 to heat the heat storage body 1 by the radiant heat to store the heat.

Next, in the hot air heat exchange, the control unit 5 controls the radiant heater 2.
When the blower 4 is energized, the heating air blown by the blower 4 into the regenerator air passage 3 is first heated by the regenerator 1,
Further, the radiant heater 2 also heats the hot air to generate hot air, which is blown out from the hot air outlet 6.

When the heat storage body 1 is not storing heat, when the radiant heater 2 is energized, the heating air is heat-exchanged into warm air only by the radiant heater 2 and blows out from the warm air outlet 6.

[0006]

However, in the conventional structure as described above, since the ventilation resistance of the heat storage air passage 3 is large, the blower 4 needs a high pressure to secure a predetermined air volume. The cross-flow type is suitable for. However, there was a disadvantage that the cost was high.

Accordingly, the present invention has been made to overcome the above-mentioned drawbacks, and a first object of the present invention is to obtain a predetermined air volume with a blower having no high pressure.

A second object is to use a cross-flow type blower in general because a high pressure is required. Instead, it is to use a propeller blower having a low pressure characteristic.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a heat storage element, a part of a wall portion of which is provided with a heat storage element air path, and a heat storage element air path. A heater for heating and accumulating heat in the heat accumulator and heating the air in the heat accumulator air passage, a bypass air passage provided in parallel with the heat accumulator air passage, and a rotation center of the rotational projection area of the blade. about
The air volume generated in the half part is sent to the heat storage air passage.
The air volume generated in the remaining half
It has a blower including a propeller blade to be sent in, and a hot air outlet that mixes air from the heat storage air path and air from the bypass air path and blows out the air .

[0010]

In the regenerative electric heating apparatus according to the present invention, the heating air blown from the blower is divided into two directions, one of which is sent to the heat storage air passage and the other is sent to the bypass air passage. The heating air blown to the heat storage body air passage is heat-exchanged to warm air by the heat storage body and the radiant heater, and the heating air blown to the bypass air passage passes through without being heat-exchanged to hot air. Then, they are joined at the hot air outlet, and are blown out as hot air of an appropriate temperature. Thus, the blower does not require high pressure characteristics as in the conventional case.

Next, the blower uses propeller blades, and the amount of air generated at about a half portion from the center of rotation of the rotationally projected area of the propeller blades is sent to the regenerator air passage, and the amount of air generated at the remaining approximately half portion Is blown into the bypass air passage, so that a propeller blade blower having low pressure characteristics can be used.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In the figure, the same components as those of the conventional example described in FIG. 4 are denoted by the same reference numerals.

In FIG. 1, reference numeral 7 denotes a bypass air passage,
The heat storage air passage 1 is provided in parallel with the heat storage air passage 1, and passes the supplied heating air without heating. Reference numeral 6a denotes a hot air outlet, which joins and mixes the hot air from the heat storage air passage 3 and the heating air from the bypass air passage 7 to blow out the hot air at an appropriate temperature.

In the above configuration, the hot air heat exchange is performed by the control unit 5.
When electricity is supplied to the radiant heater 2 and the blower 4, the heating air blown by the blower 4 is divided into two directions, one of which is blown to the regenerator air passage 3, and the other to the bypass air passage 7. The heating air blown into the heat storage body air passage 3 is first heated by the heat storage body 1 and further heated by the radiant heater 2 to become hot air, which is sent to the hot air outlet 6a. The heating air sent to the bypass air passage 7 passes through the hot air outlet 6a without heat exchange with the hot air. The warm air from the heat storage air passage 3 and the heating air from the bypass air passage 7 are mixed and mixed at the warm air outlet 6a, and are blown out as a warm air of an appropriate temperature. Therefore, the blower 4 requires a high pressure characteristic as in the related art, and a predetermined air volume can be obtained by a blower having a low pressure characteristic without using a cross-flow type which increases the cost.

Next, an embodiment in which a propeller blade is used as a blower will be described with reference to FIG. In FIG. 2, reference numeral 4a denotes a propeller blade-type blower, and the amount of air generated at about a half portion from the rotation center of the rotation projected area of the blade is a heat storage air passage 3
And the air volume generated in the remaining half of the air is sent to the bypass air passage 7.

In this embodiment, when the propeller blade type blower 4a is operated, the amount of air generated at about half the rotation center of the rotation projected area of the blade is sent to the heat storage body air passage 3 for the hot air heat exchange in the heat storage body 1. The air volume generated in the remaining half is sent to the bypass air passage 7. Therefore, the predetermined air volume cannot be secured by only the heat storage air passage 3, but by adding the air volume of the bypass air passage 7, the predetermined air volume can be secured, and a propeller blade blower having low pressure characteristics can be used.

Next, an embodiment using a plurality of relatively low-priced small-sized blowers will be described with reference to FIG.

In FIG. 3, reference numeral 4b denotes a regenerator air passage blower, which blows air to the regenerator air passage 3. Reference numeral 4c denotes a bypass air passage blower that blows air to the bypass air passage 7.

In this embodiment, a regenerator air path blower 4b having the characteristic of obtaining the air volume required for the regenerator air path 3 and a bypass air path fan having the characteristic of obtaining the air volume required for the bypass air path 7 are provided. 4c can be selected, the cost can be lower than one blower, and the storage volume can be reduced.

[0020]

As described above, the present invention provides a bypass air passage provided in parallel with a heat storage air passage, for passing the supplied heating air without heating, and a warm air flow from the heat storage air passage. And a heating air outlet that merges and mixes the heating air from the bypass air passage and blows out the air, the heating air blown from the blower is divided into two directions, one of which is a heat storage air passage. The other side is blown to the bypass air path, and the heating air blown to the regenerator air path is exchanged with warm air by the regenerator and the radiant heater, and the heating air blown to the bypass air path is heated. Without being exchanged with the wind, the air is sent to the hot air outlet, merges at the hot air outlet, and is blown out as a suitable temperature hot air. Therefore, there is an effect that a blower having a low pressure characteristic may be used without using a cross-flow type which requires a high pressure characteristic and a high cost as in the related art.

Further, in the present invention, the blower uses a propeller blade, and the air volume generated at about half from the rotation center of the rotation projected area of the propeller blade is sent to the regenerator air passage, and the air volume generated at the other half is bypassed. With the configuration in which the propeller blade is blown into the air passage, a propeller blade blower having low pressure characteristics can be used.

[Brief description of the drawings]

FIG. 1 is a sectional view of a heat storage electric heating apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view of a heat storage electric heating device according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a heat storage electric heating apparatus according to a third embodiment of the present invention.

FIG. 4 is a cross-sectional view of a conventional heat storage electric heating device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 heat storage element 2 radiant heater 3 heat storage element air path 4 blower 4 a propeller blade type fan 4 b heat storage element air path fan 4 c bypass air path fan 5 control unit 6 a hot air outlet 7 bypass air path

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Fujii 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-5-34015 (JP, A) Shokai Sho 49- 107153 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) F24H 7/00-7/06

Claims (1)

(57) [Claims] 1. A heat storage element, a heat storage element air path in which a part of a wall portion is constituted by the heat storage element, and a heat storage element that is provided in the heat storage element air path to heat and store the heat storage element. A heater for heating the air, a bypass air passage provided in parallel with the regenerator air passage, and about a rotation center of the rotation projected area of the blade.
The air volume generated in the half part is sent to the heat storage air passage.
The air volume generated in the remaining half
Thermal storage electric heating device comprising a blower consisting of propeller blades, the air and blown by mixing air from the bypass air passage warm air outlet from the heat storage air duct for feeding.