JPH07127921A - Heat accumulation electric heating device - Google Patents

Abstract

PURPOSE:To cover a heat accumulation electric heater device which heats an accumulator with an electric heater and accumulates the heat and performs hot air heating service and eliminate safety problems which may be responsible to burns resultant from a rise in the temperature of a casing during heat accumulation. CONSTITUTION:Since a control unit 9a is installed, which controls the drive of a fan 6 so that an indoor air may flow into an air insulation layer from a cooling air inlet 12 which communicates with the fan 6 in the air insulation layer 11 where an air duct damper 8 closes a heat accumulator air duct 3 during heat accumulation, the air flows into the air insulation layer from the cooling air inlet 12 and cools a casing 5. This construction makes it possible to minimize a rise in the temperature of the casing and eliminate such hazards as burns.

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 in which a heat storage body is heated and stored by an electric heater, and heating air is heated to warm air by the stored heat amount to perform warm air heating.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a heat storage electric heating device of this type is used for heating with a heat storage body 1, a heater 2 for heating and storing the heat storage body 1, and a heat storage amount of the heat storage body 1. A heat storage body air passage 3 provided around the heat storage body 1 for exchanging heat into the air, a heat insulation layer 4 for insulating the heat storage body air passage 3 and the heat storage body 1, and a periphery of the heat insulation layer 4. The casing 5 provided, the blower 6 for sending the heating air to the heat storage body air passage 3, and the inlet 7 of the heat storage body air passage 3 and the blower 6 are provided. An air duct damper 8 for closing the passage 3, the heater 2, the blower 6, depending on the operation mode,
The control unit 9 controls the air duct damper 8 and the warm air outlet 10 that blows warm air.

In the above structure, when heat is stored in the heat storage body 1, the control unit 9 drives the air passage damper 8 to close the heat storage body air passage 3, further energizes the heater 2, and radiates the heat to store the heat storage body 1. Was being heated to store heat.

Next, the hot air heat exchange in the heat storage body 1 is performed by the control unit 9
Drives the air duct damper 8 to open the heat storage body air passage 3, operates the blower 6 to blow heating air to the heat storage body air passage 3, and the heat storage body 1 exchanges the heating air with warm air. Was there.

Further, when the heater 2 is energized, the heating air blown is also heat-exchanged with the heater 2 by warm air.

The warm air was blown from the warm air outlet 10.

[0007]

However, in the conventional structure as described above, when heat is stored in the heat storage body 1, if a brick is used for the heat storage body 1, for example, the heat is stored up to about 500 ° C. Therefore, the heat storage body air passage 3 is used. And the heat storage body 1 to the heat insulation layer 4
However, it was difficult to completely suppress the rise in the surface temperature of the casing 5 even if the heat insulation was performed. And the temperature of the casing 5 is 5
There was a risk of burns when the temperature exceeded 0 ° C, which was a safety drawback.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art, and since the temperature of the casing rises during heat storage and safety problems such as the risk of burns are eliminated, the temperature rise of the casing during heat storage is reduced. The first object is to provide the heat storage electric heating device.

A second object is to effectively operate the blower in order to reduce the rise in casing temperature during heat storage.

A third object is to effectively change the air volume of the blower in order to reduce the rise in casing temperature during heat storage.

A fourth object is to detect the casing temperature and effectively operate the blower in order to reduce the rise in the casing temperature during heat storage.

A fifth object is to suppress the rise in casing temperature during heat storage to be small and to effectively use the heat quantity of the cooled air.

[0013]

In order to achieve the first object, the heat storage electric heating apparatus of the present invention has an air heat insulation layer formed by a gap between a heat insulation layer and a casing, and an air duct damper as a heat storage body. When the air passage is closed, the air insulating layer communicates so that the air for heating is sent from the blower, and conversely, when the air passage for the heat storage body is opened, it is closed, and the air passage damper is used during heat storage of the heat storage body. Then, the heat storage air passage is closed, the blower is driven, and a control unit that causes the air to flow into the air insulating layer from the cooling air inlet is provided.

In order to achieve the second object, the present invention has a construction in which a control unit for intermittently driving the blower is provided during the heat storage of the heat storage body.

Next, in order to achieve the third object, the present invention has a constitution in which a control unit for reducing and driving the air volume of the blower is provided during heat storage of the heat storage body.

In order to achieve the fourth object, the present invention comprises a casing sensor for detecting the temperature of the casing during heat storage of the heat storage body, and a controller for driving the blower according to the detected temperature. is there.

In order to achieve the fifth object, the present invention is configured so that the air flowing from the cooling air inlet to the air heat insulating layer by the blower during the heat storage of the heat storage body exits from the warm air outlet. .

[0018]

In the heat storage electric heating apparatus of the present invention, when heat is stored in the heat storage body, the control section energizes the heater and heats the heat storage body by the radiation. Further, the heat storage air passage is closed by a damper so that the air insulating layer is communicated so that air is sent from the blower, and when the blower is driven, the air flows into the air insulating layer from the cooling air inflow port to cool the casing. Therefore, the temperature of the casing is less likely to rise.

The control section is for cooling the casing by intermittently driving the blower so as to maintain the temperature at which there is no safety problem during heat storage of the heat storage body. Cooling heat is reduced compared to the case of continuous driving, and heat can be stored effectively while ensuring safety.
Furthermore, it also suppresses the increase in the power consumption of the blower.

The control unit cools the casing by reducing the air volume of the blower during heat storage of the heat storage body. Cooling heat is reduced compared to driving at the rated air volume, heat can be stored effectively while ensuring safety, and the increase in power consumption of the blower is also suppressed.

The control unit detects the casing temperature by the casing sensor while the heat storage body is storing heat, and drives the blower to cool the casing when the temperature exceeds the set temperature. Compared to the case where the blower is driven continuously or intermittently, the heat can be stored effectively while ensuring the safety.
It also suppresses an increase in power consumption.

While the heat is being stored in the heat storage body, the air flowing from the cooling air inlet to the air insulating layer by the blower exits from the hot air outlet, so that the heat quantity of the cooled air can be effectively utilized.

[0023]

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

In FIG. 1, 11 is an air heat insulating layer,
A gap is provided between the casing 5 and the outer periphery of the heat insulating layer 4. Reference numeral 12 is a cooling air inflow port, and when the air duct damper 9 closes the heat storage air duct 3 during heat storage of the heat storage body 1, the air heat insulating layer 1 is formed.
The air is sent from the blower 6 to the 1 side,
Conversely, when the heat storage body air passage 3 is opened, the air heat insulating layer 11 side is closed. Reference numeral 9a denotes a control unit that closes the heat storage body air passage 3 side with the air passage damper 8 when the cooling air inlet 12 and the heat storage body 1 store heat.
The cooling air inflow port 12 side is made to communicate with each other, and the blower 6 is driven to allow air to flow from the cooling air inflow port 12 side to the air heat insulating layer 11 side.

In the above structure, when heat is stored in the heat storage body 1, the control unit 9a drives the air passage damper 8 to close the heat storage body air passage 3 so that air is sent from the blower 6 into the air heat insulating layer 11. Communicate. Then, the heater 2 is energized, and the heat is stored in the heat storage body 1 by the radiation. When the blower 6 is further driven, air flows into the air heat insulating layer 11 through the cooling air inlet 12 and cools the casing 5. Therefore, there is an effect that the temperature of the casing 5 does not rise and safety problems such as a risk of burns can be solved.

Next, a configuration in which the control section intermittently drives and cools the blower during heat storage will be described with reference to FIGS. 1 and 2.

In this configuration, the control section 9a cools the casing 5 by intermittently driving the blower 6 in a safe temperature range while the temperature of the casing 5 rises while the heat storage body 1 is storing heat. Cooling heat is reduced as compared with the case of continuous driving, and it is possible to effectively store heat while ensuring safety, and it is also possible to suppress an increase in power consumption of the blower 6.

Next, a configuration in which the control unit cools the blower by reducing the air flow rate during heat storage will be described with reference to FIGS. 1 and 3.

In this configuration, the control section 9a cools the casing 5 while the heat storage body 1 is storing heat with the air volume of the blower 6 being lower than the rated air volume. Cooling heat is reduced as compared with the case of driving at the rated air volume, and it is possible to effectively store heat while ensuring safety, and it is also possible to suppress an increase in power consumption of the blower 6.

Next, a structure in which a casing sensor for detecting the casing temperature during heat storage is provided, and when the detected value exceeds the set temperature, the fan is driven to cool the casing will be described with reference to FIGS. 4 and 5.

In FIG. 4, reference numeral 13 is a casing sensor for detecting the temperature of the casing 5.

In this configuration, the control unit 9a detects the temperature of the casing 5 by the casing sensor 13 while the heat storage body 1 is storing heat, and drives the blower 6 to cool the casing 5 when the temperature exceeds the set temperature. As compared with the case where the blower 6 is driven continuously or intermittently, there is an effect that it is possible to store heat effectively while surely securing safety and to suppress an increase in power consumption.

Next, the structure in which the air flowing into the heat insulating layer from the cooling air inflow port by the blower during the heat storage exits from the warm air outlet will be described with reference to FIG.

In this configuration, the air that has flowed into the heat insulation layer 11 from the cooling air inlet 12 by the blower 6 while the heat is being stored in the heat storage body 1 exits from the warm air outlet 10 so that the heat quantity of the cooled air is effectively used. The effect is that you can do it.

[0035]

As described above, according to the present invention, when the air duct damper closes the heat storage air duct, the air insulating layer communicates with the blower, and conversely, when the heat storage air duct is opened, the cooling air inlet is closed. During the heat storage of the heat storage body, the air passage damper closes the heat storage body air passage, drives the blower, and provides a control unit for controlling the indoor air to flow from the cooling air inlet into the air insulating layer. When heat is stored in the heat storage body, the control unit drives the air duct damper to close the heat storage body air passage so that the air insulating layer is in communication so that indoor air is sent from the air blower, and the air blower is driven to cool the indoor air. Since the casing is cooled by flowing into the air heat insulating layer from the inlet, the temperature of the casing does not rise so much, and there is an effect that safety problems such as burns can be solved.

Since the control unit for intermittently driving the blower is provided during the heat storage of the heat storage body, the blower is intermittently driven during the process of keeping the temperature at the heat storage body such that the control unit does not have a safety problem. To cool the casing. Cooling heat is reduced as compared with the case of continuously driving, and it is possible to effectively store heat while ensuring safety, and it is also possible to suppress an increase in power consumption of the blower.

Since the control unit for lowering and driving the air volume of the blower is provided during the heat storage of the heat storage body, the control unit reduces the air volume of the blower and cools the casing when the heat storage body stores heat. Cooling heat is reduced as compared to the case of driving at the rated air volume, and it is possible to effectively store heat while ensuring safety, and it is also possible to suppress an increase in power consumption of the blower.

A casing sensor for detecting the casing temperature is provided, and when the detected value exceeds the set temperature during heat storage, the control unit drives the blower to cool the casing, thereby continuously or intermittently driving the blower. You can store heat effectively while ensuring safety,
This has the effect of suppressing an increase in power consumption.

Further, the air introduced into the heat insulation layer from the cooling air inflow port by the blower during heat storage exits from the warm air blowout port, so that the air is insulated from the cooling air inflow port by the blower during the heat storage of the heat storage body. Since the air flowing into the layer exits from the hot air outlet, there is an effect that the heat quantity of the cooled air can be effectively used.

[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 an operation sequence diagram of a heat storage electric heating device according to another embodiment of the present invention.

FIG. 3 is an operation sequence diagram of the heat storage electric heating device according to another embodiment of the present invention.

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

FIG. 5 is an operation sequence diagram of the heat storage electric heating device according to still another embodiment of the present invention.

FIG. 6 is a sectional view of a conventional heat storage electric heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat storage body 2 Heater 3 Heat storage body air passage 4 Thermal insulation layer 5 Casing 6 Blower 7 Heat storage body Air passage inlet 8 Air passage damper 9a Control part 10 Hot air outlet 11 Air insulation layer 12 Cooling air inlet 13 Casing sensor

Claims (5)

[Claims] Claim: What is claimed is: 1. A heat storage body, a heater for heating and storing the heat storage body, a heat storage body air passage provided with a heat storage body for exchanging heating air into warm air with the heat storage amount of the heat storage body, A heat insulating layer that heat-insulates the heat storage body air passage and the heat storage body, an air heat insulating layer having a gap around the heat insulating layer, a casing provided around the air heat insulating layer, and air in the heat storage body air passage. A blower for feeding, a wind passage damper provided between the inlet of the heat storage body air passage and the blower and closing the heat storage body air passage during heat storage of the heat storage body, and when the air passage damper closes the heat storage body air passage. The air insulating layer is communicated so that air is fed from the blower, and conversely, a cooling air inlet opening to the air insulating layer that is closed when the heat storage body air passage is opened, and the heat storage of the heat storage body, The heat storage air passage is closed with an air passage damper, and the cooling air inlet is connected. The blower is driven thermal storage electric heating apparatus having a control unit for admitting air to the air heat insulating layer from the cooling air inlet. 2. The heat storage electric heating device according to claim 1, wherein the control section intermittently drives the blower during heat storage of the heat storage body. 3. The heat storage electric heating device according to claim 1, wherein the control section drives the fan by reducing the air volume of the blower during heat storage of the heat storage body. 4. The heat storage electric heating device according to claim 1, wherein the control section drives the blower according to the temperature detected by a casing sensor that detects the temperature of the casing during heat storage of the heat storage body. 5. The heat storage electric heating device according to claim 1, wherein the air that has flowed into the heat insulating layer from the cooling air inlet by the blower while the heat is being stored in the heat storage body is discharged from the hot air outlet.