JPH07217998A - Heat storage electric heater - Google Patents

Abstract

PURPOSE:To shorten heat insulation time of storage heat, reduce the amount of consumption of electric power not contributed to heating, and prevent heating capability from being lowered owing to the insufficient amount of storage heat under any conditions. CONSTITUTION:There are provided in a heater body 1 a hot air producer composed of a positive characteristic heater 2 and an air fan 3 both for serving to convert suction air from a suction inlet 7 to hot air, timer set means for setting heating starting time, and a storage device 6 for storing heat at a predetermined time before the heating starting time. Sucked air from the suction inlet 7 is converted to hot air in the heat storage device 6 and the hot air is heated in the hot air producer. There are further provided a microcomputer for programing the heat storage starting time in response to ambient temperature around the heater body 1, and a control part for controlling the heat storage starting to the heat storage device 6 at the time when the ambient temperature detected by an ambient temperature detector for detecting the ambient temperature is applied to the heat storage starting tome programmed in the microcomputer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage type electric heating machine in which control means starts control to start heat storage in a heat storage device when environmental conditions of ambient temperature are suitable for heat storage start time.

[0002]

2. Description of the Related Art Conventionally, an electric heater equipped with a warm air generator formed of a heating element and a blower fan is used in general household A.
It has been widely put into practical use because it can be easily operated using a C100V power source, but the heating capacity of this electric heater is approximately 1200W from the capacity of the outlet and breaker.
Since it is limited to the front and rear small-capacity ones, in recent years, when the heat storage device is built in and heat radiation is not required, the heat storage device stores heat energy, and when necessary, the heat storage device and hot air are generated. There is a heat storage type electric heater that performs heating with a high heating capacity in combination with a device, but if the heating start time of the hot air generator is set in advance, a certain time before the heating start time of the warm air generator. Therefore, heat energy is stored in the heat storage device, and the heat storage is completed by the heating start time to maintain the heat retention state.

As described above, since the heat energy is stored in the heat storage device in advance from a certain time before the heating start time, when the environmental conditions such as the ambient temperature of the heat storage type electric heater change, the heat energy stored in the heat storage device. Also changes,
The heat storage start time of the heat storage device is determined so that the heat storage can be completed and the heat retention state can be maintained even under the condition of the lowest temperature of use of the heat storage electric heater.

However, if the above-mentioned control is performed, for example, under the condition of the maximum temperature of use of the heat storage type electric heater, when heat energy starts to be stored in the heat storage device, the time to complete heat storage is short, Since the heat retention state becomes long, the amount of electric power that does not contribute to heating increases.

Therefore, as disclosed in Japanese Patent Publication No. 4-12370, when the heating start time is the end of the heat storage time, the heat storage time before the start of heating is divided into a plurality of time zones, and the heat storage time is divided into a plurality of time zones. Detecting the initial ambient temperature, if the ambient temperature is high, the heat storage start time is delayed, and if the ambient temperature is low, the heat storage start time is accelerated, and the amount of power consumed in the heat retention state is minimized.

In addition, as shown in FIG. 3, the heat storage material of the heat storage device is a latent heat storage material such as polyethylene glycol: melting point 53.
When the ambient temperature of the heat storage type electric heater is 20 ° C, it takes 122 minutes to complete the heat storage and enter the heat retention state. It takes 142 minutes at 10 ° C and 155 minutes when the ambient temperature is 0 ° C.

Therefore, the ambient temperature condition of the heater body is detected by an ambient temperature detecting device, and the ambient temperature is, for example, 20 ° C., 10
In case of ℃ and 0 ℃, heating start time is 122 minutes, 142 respectively
If the control means performs control such that heat energy is stored in the heat storage device from 155 minutes before, there is almost no heat retention state, and the amount of electric power that does not contribute to heating is minimized.

[0008]

However, in the heat storage type electric heater configured as described above, first, if the control is to start heat storage a certain time before the heating start time,
Under the condition of the maximum temperature of use of a heat storage type electric heater, when heat energy starts to be stored in the heat storage device, the time to complete heat storage is short and the heat retention state becomes long, so the amount of power consumption that does not contribute to heating Will increase.

If the heat storage period before heating is divided into a plurality of time zones and the heat storage start time is controlled according to the ambient temperature, for example, the heating start time is set to 8:00 am and the heat storage start time is set. 3:00 am if the ambient temperature is below 5 ° C,
When the temperature is 5 ° C or higher, it is from 5 am, and when the ambient temperature drops severely during the period from 3 am to 5 am, the ambient temperature was 5 ° C or higher at 3 am However, if the temperature drops below 5 ° C at 5 am, the heat storage operation starts at 5 am, so sufficient heat storage cannot be performed by 8 am, which is the heating start time, and the heat storage amount There was a problem that the heating capacity deteriorated due to the shortage.

The heat storage type electric heater of the present invention solves the above problems, and shortens the heat retention state of heat storage to minimize the consumption of electric power not contributing to heating.
It is an object of the present invention to provide a heat storage type electric heater capable of preventing a decrease in heating capacity due to insufficient heat storage amount.

[0011]

In order to achieve the above object, the heat storage type electric heater according to the present invention is, in the invention as set forth in claim 1, in which the air taken in from the intake port is made into warm air in the heater main body. For generating a warm air generator including a heating element and a blower fan, a timer setting means for setting a heating start time of the warm air generator by a timer, and storing heat before a predetermined time of the heating start time of the timer setting means. And a heat storage device for storing the heat, and the air taken in through the air inlet is radiated by the heat storage device to generate hot air, and the hot air is further heated by the hot air generator to perform heating. In the warm air blower, while controlling the heat storage start time according to the ambient temperature of the heater body, the control for starting heat storage in the heat storage device at the time when the environmental condition of the current ambient temperature is suitable for the heat storage start time. Control means It is made of a.

According to a second aspect of the present invention, in the configuration of the first aspect, the control means controls the microcomputer for programming the heat storage start time according to the ambient temperature of the heater body, and the ambient temperature. An ambient temperature detection device for detecting, and a control for starting heat storage in the heat storage device when the ambient temperature detected by the ambient temperature detection device is applied to the heat storage start time programmed in the microcomputer And a control unit.

[0013]

According to the structure of claim 1, the control means programs the heat storage start time according to the ambient temperature of the heater main body, and the environmental condition of the current ambient temperature is suitable for the heat storage start time. By performing control to start heat storage in the heat storage device, the heat retention state of heat storage is shortened to minimize the consumption of electric power that does not contribute to heating, and the shortage of heat storage is resolved.

According to the above-mentioned structure of the present invention, the microcomputer stores the heat storage start time according to the ambient temperature of the heater body, and the ambient temperature detected by the ambient temperature detecting device is programmed in the microcomputer. By starting the heat storage to the heat storage device at the time of application at the heat storage start time, the heat retention state is shortened by completing heat storage early before the heating start time under any condition, and it does not contribute to heating The power consumption is minimized, the shortage of heat storage due to heat storage not being completed by the heating start time is resolved, and heat storage in the heat storage device is started from the optimum heat storage start time according to the ambient temperature.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the heat storage type electric heater of the present invention will be described below with reference to FIGS. One embodiment of the heat storage type electric heater of the present invention is configured as shown in FIGS. 1 and 2. In FIG. 1, the heat storage type electric heater of the present invention is arranged in a heater body 1. Blown positive characteristic heating element 2 and blower fan 3 for blowing air heated by the positive characteristic heating element 2
And a blower duct 5 for guiding the warm air blown from the blower fan 3 to the blower port 4 provided on the front surface of the heater body 1, and the blower duct 5 provided in the blower duct 5. The heat storage device 6 is provided.

The heater body 1 is formed in a box shape, and the blower port 4 is provided at the lower front portion of the heater body 1 and the intake port 7 is provided at the lower rear portion thereof.

The blower fan 3 comprises a motor 8 installed on the front plate of the blower duct 5 and a fan 9 fixed to the motor shaft of the motor 8. The blower fan 3
The positive temperature coefficient heating element 2 is disposed in the blower duct 5 at the subsequent stage (blower side).

The heat storage device 6 comprises a heat storage body 10 and a planar heat storage heating body 11 for storing heat in the heat storage body 10. The heat storage body 10 is sandwiched by the heat storage body 11. Therefore, the heat storage device 6 is disposed on the intake side of the blower fan 3 (between the intake port 7 and the blower fan 3), and the positive characteristic heating element 2 is on the blower side of the blower fan 3 (the positive characteristic heat generation). It is arranged between the body 2 and the blower opening 4).

Then, a microcomputer (not shown) is programmed with a heat storage start time according to the ambient temperature,
An ambient temperature detecting device 12 for detecting the ambient temperature is arranged at the intake port 7, and a timer setting means (not shown) for timer setting the heating start time of the warm air generator is provided in the heater main body. 1, the ambient temperature detected by the ambient temperature detection device 12 when the heating start time is set by the timer setting means is applied to the heat storage start time preprogrammed in the microcomputer. A control unit 13 that controls the start of heat storage in the heat storage device 6 is provided on the front plate of the warm air duct 5.

In FIG. 2, the relationship between the ambient temperature programmed in the microcomputer and the heat storage start time is shown by the characteristic line A. This relationship is the heat generation characteristic of the heat storage heating element 11 and the heat radiation of the heat storage device 6. Determined by characteristics. The characteristic line B shows the relationship between the conventional ambient temperature and the heat storage state, and shows an example of the case where the heat storage time, that is, the heat storage start time is divided into a plurality according to the ambient temperature, and the characteristic line C shows the change in the ambient temperature. Is shown.

Next, the operation of one embodiment of the heat storage type electric heating machine of the present invention constructed as above will be described with reference to FIG. First, the heating start time is set by the timer setting means, and the ambient temperature detection device 12 is set before the heating start time.
When the ambient temperature detected in 1 is applied to the heat storage start time preprogrammed in the microcomputer, heat storage in the heat storage device 6 is started and completed by the heating start time, and when the heating start time comes, the motor 8 The fan 9 is rotated by driving the blower fan 3, and the indoor air is taken in from the intake port 7 by driving the blower fan 3 and passes through the heat storage device 6 in the blower duct 5. Then, the indoor air taken in by the heat radiation of the heat storage device 6 becomes warm air and reaches the positive temperature characteristic heating element 2, which is further heated by the positive temperature characteristic heating element 2 and is blown from the blower opening 4 to perform heating. To do.

Further, in FIG. 2, the conventional characteristic line B indicates that when the ambient temperature is 5 ° C. or lower, heat storage starts at 3:00 am, and when the ambient temperature is 6 ° C. to 10 ° C., 4:00 am, ambient temperature. Is 11
When the temperature is between 15 ° C and 15 ° C, heat storage starts at 6 am.

For example, in the case of the characteristic line B, when the ambient temperature changes as shown in the characteristic line C, if the ambient temperature is 8 ° C. at 3:00 am and the heat storage is started from 4:00 am, the ambient temperature becomes am. If the temperature drops to 8 ° C to 5 ° C or less between 3:00 and 4:00, heat storage cannot be completed by the heating start time unless heat storage originally starts at 3:00 am. In general, the phenomenon that the temperature drops sharply in the morning is a phenomenon that is particularly noticeable in the winter when a heater is used, and it is no wonder that the temperature in the room drops sharply as shown in the conventional characteristic line B above. If the start time is divided by the ambient temperature, it is not possible to cope with the temperature change and the heat storage cannot be completed by the heating start time.

However, since the characteristic line A is obtained by calculating the correlation between the ambient temperature and the heat storage start time based on the one-to-one data, the heating start time can be met regardless of the change in the ambient temperature. So that heat storage can be started.

For example, in the case of the above characteristic line B, since the ambient temperature has dropped to 8 ° C. to 5 ° C. or less, even if the heat storage is started at 4:00 am, the heat storage cannot be completed by the heating start time. However, in the case of the characteristic line A, heat storage starts when the ambient temperature reaches 7 ° C at 3:20 am, which is the intersection of the characteristic line A and the characteristic line C, and the heat storage is completed by the heating start time. can do.

As described above, the correlation between the ambient temperature of the heater main body 1 and the minimum heat storage start time required to complete heat storage is programmed in the microcomputer, and the ambient temperature detection device 1
By starting the heat storage in the heat storage device 6 at the time when the ambient temperature detected in 2 is applied at the heat storage start time programmed in the microcomputer, under any condition, the heating is performed earlier than the heating start time. Shorten the heat retention state by completing heat storage to minimize the amount of power consumption that does not contribute to heating, and prevent the decrease in heating capacity caused by insufficient heat storage due to not completing heat storage by the heating start time. Further, the heat storage in the heat storage device 6 can be started from the optimum heat storage start time corresponding to the ambient temperature.

Further, it is more economical if the heat storage of the heat storage device 6 is limited to the use of late-night power.

The heat storage device 6 of the above-described embodiment may be a latent heat storage device that uses phase change of a substance, or a sensible heat storage device that uses water or the like.

[0029]

Since the heat storage type electric heater according to the present invention has the above-mentioned structure, the invention according to claim 1 programs the heat storage start time according to the ambient temperature of the heater main body by the control means. In addition, by performing control to start heat storage in the heat storage device at a time when the environmental conditions of the current ambient temperature are suitable for the heat storage start time, under any conditions, the heat retention state of the heat storage is shortened and heating is performed. It is possible to minimize the consumption of electric power that does not contribute to the heat generation and prevent the heating capacity from decreasing due to insufficient heat storage.

According to the second aspect of the present invention, the microcomputer stores a heat storage start time according to the ambient temperature of the heater main body, and the ambient temperature detected by the ambient temperature detecting device is programmed in the microcomputer. By starting heat storage in the heat storage device at the time of application at the start time, under any environmental conditions, the heat retention state of heat storage is shortened to minimize the amount of power consumption that does not contribute to heating. In addition, it is possible to prevent the heating capacity from decreasing due to insufficient heat storage amount, and it is possible to control at the optimum heat storage start time according to the ambient temperature.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of a heat storage type electric heater of the present invention.

FIG. 2 is a characteristic diagram showing a relationship between an ambient temperature and a heat storage start time of an embodiment of the heat storage type electric heater of the present invention.

FIG. 3 is a characteristic diagram showing a relationship between an ambient temperature and a heat storage state of a conventional heat storage electric heater.

[Explanation of symbols]

 1 Heater Main Body 2 Positive Characteristic Heating Element 3 Blower Fan 6 Heat Storage Device 7 Intake Port 10 Heat Storage Body 11 Heat Storage Heating Body 12 Ambient Temperature Detection Device 13 Control Section

Claims (2)

[Claims] 1. A warm air generator including a heating element and a blower fan for heating the air taken in through an intake port into the heater body, and a heating start time of the warm air generator is set by a timer. A timer setting means for, and a heat storage device for storing heat at a predetermined time before the heating start time of the timer setting means are provided, and the air taken in through the intake port is made into warm air by the heat radiation of the heat storage device, In a heat storage type electric heater that further heats this warm air by the warm air generator to perform heating, the heat storage start time is programmed according to the environmental condition of the ambient temperature of the heater body, and the current ambient temperature is also programmed. A heat storage type electric heating machine, comprising: a control unit that performs control to start heat storage in the heat storage device at a time point when the environmental condition is suitable for the heat storage start time. 2. The control means, a microcomputer for programming a heat storage start time according to the ambient temperature of the heater body, an ambient temperature detection device for detecting the ambient temperature, and the ambient temperature detection device. 2. The control unit for performing control to start heat storage in the heat storage device when the ambient temperature detected in 1. is applied to the heat storage start time programmed in the microcomputer. Heat storage type electric heater.