JP2790022B2 - 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 which heats and stores heat of a heat storage body with an electric heater, and heats the heating air to warm air by using the heat storage amount.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, this type of heat storage electric heating apparatus uses 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 for heating. A heat storage body air path 3 provided around the heat storage body 1 for heat exchange of air into warm air, a heat insulating layer 4 for insulating the heat storage body air path 3 and the heat storage body 1, and a heat insulating layer 4 around the heat storage layer 4. A casing 5 provided, a blower 6 for feeding heating air into the heat storage body air passage 3, and a fan 6 provided between the inlet 7 of the heat storage body air passage 3 and the blower 6. An air path damper 8 for closing the path 3, the heater 2, the blower 6,
The control unit 9 controls the air path damper 8 and a hot air outlet 10 for blowing hot air.

In the above configuration, when heat is stored in the heat storage element 1, the control section 9 drives the air path damper 8 to close the heat storage element air path 3, further energizes the heater 2, and radiates the heat to the heat storage element 1. Was heated and stored.

Next, the hot air heat exchange in the heat storage unit 1 is performed by the control unit 9.
Drives the air path damper 8 to open the heat storage air path 3, drives the blower 6 to blow heating air to the heat storage air path 3, and exchanges heat with the heat storage element 1 for heating air to warm air. I was

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

[0006] The warm air is blown out 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, for example, when bricks are used for the heat storage body 1, the heat storage body 1 heats and stores the heat to about 500.degree. And the heat storage body 1 with the heat insulating layer 4
However, it was difficult to completely suppress the rise in the surface temperature of the casing 5 even if the heat was insulated. And the temperature of the casing 5 is 5
If the temperature exceeds 0 ° C., there is a risk of burns, and there is a safety defect.

Accordingly, the present invention solves such a conventional drawback. In order to eliminate a safety problem such as a rise in the temperature of the casing during heat storage and a risk of burns, the present invention reduces the rise in the temperature of the casing during heat storage. It is a first object of the present invention to provide a heat storage electric heating device having the above configuration.

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

[0010] A third object is to effectively change the air volume of the blower in order to reduce the rise in the casing temperature during heat storage.

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

A fifth object of the present invention is to suppress a rise in the temperature of the casing during heat storage and to make effective use of the amount of heat of the cooled air.

[0013]

Therefore, in order to achieve the first object, a heat storage electric heating apparatus according to the present invention comprises an air insulation layer comprising a gap between a heat insulation layer and a casing, and an air path damper comprising a heat storage element. When the air path is closed, the air is passed from the blower to the air insulation layer so that the air for heating is conveyed. Conversely, when the heat storage element air path is opened, the cooling air inlet is closed. And a control unit for closing the regenerator air path, driving the blower, and allowing the air to flow into the air insulating layer from the cooling air inlet.

In order to achieve the second object, the present invention has a configuration 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 configuration in which a control unit is provided for driving the blower by reducing the air flow while the heat storage body is storing heat.

In order to achieve the fourth object, the present invention has a configuration in which a casing sensor for detecting a temperature of a casing during heat storage of a heat storage body and a control unit for driving a blower based on the detected temperature are provided. is there.

In order to achieve the fifth object, the present invention is configured such that the air that has flowed into the air insulation layer from the cooling air inlet by the blower during the heat storage of the heat storage body exits from the hot air outlet. .

[0018]

In the regenerative electric heating apparatus of the present invention, when storing heat in the regenerator, the control unit energizes the heater and heats the regenerator by the radiation. Further, the heat storage air passage is closed by a damper to communicate with the air insulating layer 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 inlet and cools the casing. Thus, the rise in the temperature of the casing is reduced.

The controller intermittently drives the blower to cool the casing during the heat storage of the heat storage body so as to keep the temperature at a safe level. Cooling heat is reduced compared to continuous driving, and heat can be stored effectively while ensuring safety.
Further, the increase in power consumption of the blower is suppressed.

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

The control unit detects the casing temperature by the casing sensor during the heat storage of the heat storage body, and drives the blower to cool the casing when the temperature exceeds the set temperature. Rather than continuously or intermittently driving the blower, heat can be stored more effectively while ensuring safety,
Also suppress increase in power consumption.

During the heat storage of the heat storage body, the air that has flowed into the air insulation layer from the cooling air inlet by the blower exits through the hot air outlet, so that the heat of the cooled air can be used effectively.

[0023]

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

In FIG. 1, reference numeral 11 denotes an air insulation layer;
The outer periphery of the heat insulating layer 4 is provided with a gap with the casing 5. Numeral 12 denotes a cooling air inlet, and when the air path damper 9 closes the heat storage air path 3 during heat storage of the heat storage element 1, the air heat insulating layer 1
1 side communicates so that air is sent from the blower 6,
Conversely, when the heat storage air passage 3 is opened, the air heat insulating layer 11 side is closed. Reference numeral 9a denotes a control unit, which closes the heat storage body air passage 3 side with the cooling air inflow port 12 and the heat storage body 1 when the heat storage body 1 is storing heat.
The cooling air inlet 12 side is communicated, and the blower 6 is driven so that air flows from the cooling air inlet 12 side to the air heat insulating layer 11 side.

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

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

In this configuration, the controller 9a intermittently drives the blower 6 in a safe temperature range to cool the casing 5 while the temperature of the casing 5 is increasing while the heat storage body 1 is storing heat. Cooling heat is reduced as compared with the case of continuous driving, heat can be stored effectively while ensuring safety, and an increase in power consumption of the blower 6 can be suppressed.

Next, a configuration in which the control unit reduces the air flow of the blower during heat storage to cool the air will be described with reference to FIGS. 1 and 3. FIG.

In this configuration, the controller 9a cools the casing 5 with the air volume of the blower 6 lower than the rated air volume during the heat storage of the heat storage body 1. When driven at the rated air volume, the cooling heat is reduced, heat can be stored effectively while ensuring safety, and an increase in power consumption of the blower 6 can be suppressed.

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

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

In this configuration, the controller 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. Compared to a case where the blower 6 is driven continuously or intermittently, the heat can be effectively stored while ensuring safety, and an increase in power consumption can be suppressed.

Next, a configuration in which the air that has flowed into the air insulation layer from the cooling air inlet by the blower during the heat storage and exits from the hot air outlet will be described with reference to FIG.

In this configuration, the air that has flowed into the air insulation layer 11 from the cooling air inlet 12 by the blower 6 during the heat storage of the heat storage body 1 exits through the hot air outlet 10, so that the amount of heat of the cooled air is effectively used. There is an effect that can be.

[0035]

As described above, according to the present invention, the cooling air inlet which is closed when the air passage damper closes the heat storage air passage and communicates with the blower when the heat storage air passage is opened, During the heat storage of the heat storage body, by providing a control unit that closes the heat storage body air path with the air path damper, drives the blower, and controls the indoor air to flow from the cooling air inlet to the air insulation layer. At the time of heat storage of the heat storage body, the control unit drives the air path damper to close the heat storage body air path so that indoor air is communicated from the blower to the air heat insulating layer, and the blower is driven to cool the indoor air. Since the casing flows into the air heat insulating layer from the inflow port and cools the casing, there is an effect that the rise in the temperature of the casing is small and 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 unit, the blower is intermittently driven during the heat storage of the heat storage unit so that the control unit maintains the temperature at which there is no problem in safety. For cooling the casing. Cooling heat is reduced as compared with the case of continuous driving, heat can be effectively stored while ensuring safety, and an increase in power consumption of the blower can be suppressed.

Since a control unit for reducing the air flow of the blower and driving the heat storage unit is provided during the heat storage of the heat storage unit, the control unit reduces the air flow of the blower to cool the casing when storing the heat of the heat storage unit. When driven at the rated air volume, the cooling heat is reduced, heat can be stored effectively while ensuring safety, and an increase in the power consumption of the blower can be suppressed.

A casing sensor for detecting the casing temperature is provided, and the control unit drives the blower when the detected value exceeds the set temperature during the heat storage to cool the casing, thereby continuously or intermittently driving the blower. It is possible to store heat more effectively while ensuring safety,
There is an effect that an increase in power consumption can be suppressed.

Further, the air flowing into the air insulating layer from the cooling air inlet by the blower during the heat storage is discharged from the hot air outlet, so that the air is insulated from the cooling air inlet by the blower during the heat storage of the heat storage body. Since the air that has flowed into the bed exits through the hot air outlet, there is an effect that the calorific value of the cooled air can be effectively 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 an operation sequence diagram of a heat storage electric heating apparatus according to another embodiment of the present invention.

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

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

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

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

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 heat storage element 2 heater 3 heat storage element air path 4 heat insulating layer 5 casing 6 blower 7 heat storage element air path inlet 8 air path damper 9 a control unit 10 hot air outlet 11 air heat insulating layer 12 cooling air inlet 13 casing sensor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24H 7/02 602 F24H 7/02 603

Claims (5)

(57) [Claims] 1. A heat storage element, a heater for heating and storing the heat storage element, and a heat storage element air path provided with a heat storage element for exchanging heat for heating air with warm air by the heat storage amount of the heat storage element. A heat storage body air passage and a heat insulation layer that insulates the heat storage body, an air heat insulation layer provided with a gap around the heat insulation layer, a casing provided around the air heat insulation layer, and air supplied to the heat storage body air passage. A blower to be fed, an air 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 the heat storage of the heat storage body, and the air passage damper closing the heat storage body air passage. A cooling air inlet communicating with the air insulating layer so that air is sent from the blower, and conversely, a cooling air inlet opening to the air insulating layer, which is closed when a heat storage body air path is opened, and during heat storage of the heat storage body, The regenerator air path is closed by an air path damper, and the cooling air 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 apparatus according to claim 1, wherein the control unit drives the blower intermittently during heat storage of the heat storage body. 3. The heat storage electric heating apparatus according to claim 1, wherein the control section drives the blower while reducing the air volume of the blower during the heat storage of the heat storage body. 4. The heat storage electric heating apparatus according to claim 1, wherein the control unit drives the blower based on a temperature detected by a casing sensor that detects a temperature of the casing during heat storage of the heat storage body. 5. The heat storage electric heating apparatus according to claim 1, wherein the air blown by the blower into the air heat insulating layer from the cooling air inlet through the hot air outlet while the heat storage body is storing heat.