JPH0821657A - Heat accumulating electric heater - Google Patents

Abstract

PURPOSE:To obtain a predetermined air volume by a fan having no high pressure and transfer outlet warm-air horizontally to a long distance as long as possible to improve a temperature distribution in a room. CONSTITUTION:A bypass air passage 7, sending air for room heating directly, is provided in parallel to a heat accumulating air passage 3 while the air volume of a fan 4a is distributed to both of the heat accumulating body air passage 3 and the bypass air passage 7, then, the distributed air volumes are joined in a warm-air outlet port 6a whereby a warm-air outlet port, in which warm-air from the heat accumulating body air passage 3 is positioned at a lower part and the air for room heating, which is sent out of the bypass air passage 7, is positioned at the upper part thereof, is provided. According to this method, a fan, having low-pressure characteristics, can be employed, the horizontal moving distance of warm-air is elongated and a temperature distribution in a room can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of the performance of a heat storage electric heating apparatus for heating indoor air with an electric heater and also with a heat storage body for warm air heating.

[0002]

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

In the above structure, when heat is stored in the heat storage body 1, the control section 5 energizes the radiant heater 2, and the radiant heat heats the heat storage body 1 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 to the heat storage body air passage 3 by the blower 4 is first heated by the heat storage body 1,
Furthermore, the radiant heater 2 also heats it into hot air, which is blown out from the hot air blowout port 6.

When the radiant heater 2 is energized when the heat is not stored in the heat storage body 1, the heating air is heat-exchanged with the radiant heater 2 to warm air, and is blown from the warm air outlet 6.

[0006]

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

The hot air blown out from the hot air blowout port 6 has been desired to move horizontally as far as possible from the indoor temperature distribution, but normally it rises due to the difference in specific gravity and the indoor temperature distribution rises. Tended to lean toward the top of the ceiling.

Therefore, the present invention solves the above drawbacks of the prior art by obtaining a predetermined amount of air with a blower having no high pressure, and further, the blown warm air moves horizontally as far as possible to move indoors. The first purpose is to improve the temperature distribution.

The second purpose is to exchange heat from the warm air to the indoor air in order to reduce the temperature difference between the warm air and the room temperature air, and also to function as an air insulation layer in the bypass air passage during the heat storage operation. This is to improve the heat insulating performance and to reduce the size of the device as compared with the case where a heat insulating material is separately provided.

A third object is to use a cross-flow type blower because a high pressure is required, but a propeller blower having a low pressure characteristic is used instead of the cross-flow type blower.

A fourth object is to solve the problem of increased cost and required volume by using a plurality of relatively low-priced small blowers.

[0012]

In order to achieve the first object, a bypass air passage which is provided in parallel with a heat storage air passage and only allows the sent heating air to pass therethrough without heating, and a heat storage air passage. The warm air from the body air passage is located in the lower portion in the vertical direction, and the heating air from the bypass air passage is located in the upper portion and is provided with a warm air outlet.

In order to achieve the second object, the bypass air duct is provided in contact with the heat storage air duct, and the outer constituent member of the heat storage air duct is shared with the inner constituent member of the bypass air duct. Is.

In order to achieve the third object, the blower uses propeller blades, and the air volume generated at about half from the center of rotation of the projected area of rotation of the propeller blades is sent to the heat storage body air passage and the remaining half. The amount of air generated in (1) is sent to the bypass air passage.

Further, in order to achieve the fourth object, the heat storage air duct blower for blowing the heat storage air duct and the bypass air duct blower for blowing the bypass air duct are respectively provided.

[0016]

In the heat storage electric heating apparatus of the present invention, the heating air blown from the blower is divided into two directions, one is blown to the heat storage air duct and the other is blown to the bypass air duct. The heating air blown to the heat storage body air passage is heat-exchanged with the heat storage body and the radiant heater into warm air, and the heating air blown to the bypass air passage passes through without being exchanged with the warm air. Then, it joins at the warm air outlet and is blown out as warm air of appropriate temperature. Therefore, unlike the conventional case, the blower needs high pressure characteristics, and a blower having low pressure characteristics may be used without using the cross-flow type, which increases the cost. Further, since the wind from the bypass air passage side blows off so as to cover the upper side of the warm air and prevents the warm air from rising downward, it moves further horizontally and further to improve the indoor temperature distribution.

Next, since the outer constituent member of the heat storage body air passage is also used as the inner constituent member of the bypass air passage, the heat storage body air passage on the high temperature side to the bypass air passage on the low temperature side is passed through this inner constituent member. The heat difference between the hot air and the room temperature air can be reduced. Further, during the heat storage operation, the bypass air passage serves as an air heat insulating layer, the heat insulating performance is improved, there is no need to separately provide a heat insulating material having the same heat insulating performance, and the size of the device can be reduced.

Next, a propeller blade is used for the blower, and the air volume generated in half from the center of rotation of the rotational projection area of the propeller blade is sent to the heat storage body air passage, and the air volume generated in the remaining half is sent to the bypass air passage. Therefore, a propeller blade blower having a low pressure characteristic can be used.

Further, since the heat storage body air duct blows air to the heat storage body air duct and the bypass air passage is blown by the bypass air duct blower, each blower can be small in size and lower in cost than one blower. it can.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, 7 is a bypass air passage,
It is provided in parallel with the heat storage body air passage 1, and allows the sent heating air to pass through without being exchanged with warm air. Reference numeral 6a denotes a warm air outlet, in which the warm air from the heat storage body air passage 3 is located in the lower portion in the vertical direction, and the heating air from the bypass air passage 7 is located in the upper portion and blows out.

In the above arrangement, the hot air heat exchange is performed by the control unit 5.
When the radiant heater 2 and the blower 4 are energized, the heating air blown by the blower 4 is divided into two directions and one is blown to the heat storage body air passage 3 and the other to the bypass air passage 7. The heating air sent to the heat storage body air passage 3 is heated by the heat storage body 1 and further heated by the radiant heater 2 to become warm air, which is sent to the warm air outlet 6a. The heating air sent to the bypass air passage 7 passes through the hot air outlet 6a without passing through heat exchange with the hot air. Then, they join at the hot air outlet 6a and are blown out as warm air of an appropriate temperature. Therefore, the blower 4 can be a blower having a low pressure characteristic without using a cross-flow type having a high pressure characteristic and a high cost. Furthermore, since the room temperature air in the bypass air passage 7 blows off so as to cover the upper part of the warm air and prevents the warm air from rising,
The warm air can extend the horizontal movement distance to improve the temperature distribution in the room.

Next, an embodiment in which the outer constituent member of the heat storage body air passage is also used as the inner constituent member of the bypass air passage will be described with reference to FIG.

In FIG. 2, reference numeral 8 denotes an outer constituent member of the heat storage body air passage 3, which also serves as an inner constituent member of the bypass air passage 7.

In this embodiment, heat is exchanged from the heat storage body air passage 3 on the high temperature side to the bypass air passage 7 on the low temperature side via the outer component member 8 of the heat storage body air passage, and the temperature difference between the warm air and the room temperature air is obtained. Can be reduced. Further, during the heat storage operation, the bypass air passage 7 plays the role of an air heat insulating layer, the heat insulating performance is improved, and it is not necessary to separately provide a heat insulating material having the same heat insulating performance, and the size of the device can be reduced.

Next, an embodiment using a propeller blade for a blower will be described with reference to FIG. In FIG. 3, 4a is a propeller blade type blower, in which the amount of air generated in half from the center of rotation of the rotational projected area of the blade is sent to the heat storage body air passage 3, and the amount of air generated in the other half is passed to the bypass air passage 7. It is configured to be sent.

In this embodiment, when the propeller blade type blower 4a is operated for warm air heat exchange in the heat storage body 1, the air volume generated at about half from the rotation center of the rotational projected area of the blade is sent to the heat storage body air passage 3. Then, the amount of air generated in the remaining half is sent to the bypass air passage 7, and a predetermined required amount of air is secured. A propeller blade type blower 4a having a relatively low pressure characteristic can be used.

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

In FIG. 4, reference numeral 4b is a heat storage air duct blower, which blows air to the heat storage air duct 3. 4c is a bypass air duct blower, which blows air to the bypass air duct 7.

In this embodiment, the heat storage body air duct blower 4b having the characteristic that the air volume necessary for the heat storage air duct 3 is obtained and the bypass air duct blower having the characteristic that the air volume required for the bypass air passage 7 is obtained. 4c can be selected, the cost can be lower than one blower, and the storage volume can be reduced.

[0031]

As described above, according to the present invention, the bypass air passage for sending the heating air sent in parallel with the heat storage air passage directly to the outlet of the heat storage air passage is provided, and the air volume of the blower is adjusted to the heat storage air. Hot air is distributed to both the air passage and the bypass air passage and merges at the hot air outlet so that the warm air from the heat storage air passage is located vertically below and the heating air from the bypass air passage is located above. By providing the mouth, the heating air blown from the blower is divided into two directions, one is blown to the heat storage body air duct and the other is blown to the bypass air duct. The heating air blown to the heat storage body air passage is heat-exchanged with the heat storage body and the heater to the warm air, and the heating air blown to the bypass air passage is not heat-exchanged to the warm air, but to the warm air outlet. Sent in. Then, it joins at the warm air outlet and is blown out as warm air of appropriate temperature. Therefore, unlike the conventional case, the blower needs high pressure characteristics, and a blower having low pressure characteristics can be used without using the cross-flow type, which increases the cost. Further, the room temperature air in the bypass air passage blows off so as to cover the upper part of the warm air to prevent the warm air from rising, so that the warm air has a longer horizontal movement distance and a better temperature distribution in the room.

According to the present invention, the bypass air passage is provided so as to be in contact with the heat storage air passage, and the outer constituent member of the heat storage air passage is shared with the inner constituent member of the bypass air passage. The heat storage body air passage on the high temperature side is heat-exchanged with the bypass air passage on the low temperature side via the, and the temperature difference between the warm air and the room temperature air can be reduced. Further, during the heat storage operation, the bypass air passage serves as an air heat insulating layer, the heat insulating performance is improved, there is no need to separately provide a heat insulating material having the same heat insulating performance, and the size of the device can be reduced.

In the present invention, the blower uses propeller blades,
The air volume generated in half from the center of rotation of the rotational projected area of the propeller blades is sent to the heat storage body air passage, and the air volume generated in the other half is sent to the bypass air passage, thereby achieving low pressure characteristics. There is an effect that a propeller blade blower can be used.

The heat storage body air duct blower that blows air to the heat storage air duct and the bypass air duct blower that blows air to the bypass air passage are provided, so that the heat storage air duct blows air to the heat storage air duct. Since the bypass air duct blows air to the bypass air duct, each blower has a small size, and there is an effect that the cost can be lower than that of one air blower.

[Brief description of drawings]

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

FIG. 4 is a sectional view of a heat storage electric heating device according to a fourth embodiment of the present invention.

FIG. 5 is a cross-sectional view of a conventional heat storage electric heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat storage body 2 Radiation heater 3 Heat storage body air passage 4a Propeller blade type blower 4b Heat storage body air passage blower 4c Bypass air passage air blower 5 Control part 6a Hot air outlet 7 Bypass air passage 8 Outside component of heat storage air passage

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroaki Fujii 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] Claim: What is claimed is: 1. A heat storage body, a heater for heating and storing the heat storage body, and heating the heating air to warm air, and a heat storage for exchanging the heating air to the warm air with the heat storage amount of the heat storage body. A heat storage air passage provided around the body and further provided with the heater therein, and the heat storage air passage are provided in parallel at an upper portion in the vertical direction to heat the heating air sent therein. Without the bypass air passage, and the warm air from the heat storage body air passage is located in the lower part in the vertical direction, and the heating air from the bypass air passage is located in the upper part and blows out. And a heat storage electric heating device including a blower that blows heating air to the heat storage body air passage and the bypass air passage. 2. The heat storage electric heating according to claim 1, wherein the bypass air duct is provided in contact with the heat storage air duct, and an outer constituent member of the heat storage air duct is shared with an inner constituent member of the bypass air duct. apparatus. 3. A blower uses a propeller blade, and an air volume generated at about half from a rotation center of a rotation projected area of the propeller blade is sent to the heat storage body air passage, and an air volume generated at about the other half is the bypass wind. The heat storage electric heating device according to claim 1, which is fed into a road. 4. The air blower comprises a heat storage air duct blower for blowing heating air to the heat storage air duct, and a bypass air duct blower for blowing heating air to the bypass air duct. Heat storage electric heating system.