JPH0989381A - Electric heat storage heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric heat storage heater capable of being safely used in which the natural convection heating and the hot air heating are automatically switched according to the heat storage temperature of a heat storage unit, and the appropriate supply air temperature can be kept. SOLUTION: A damper 11 and an air blowing part 14 for heat radiation are provided above and below a heat storage unit 6, a temperature of the heat storage unit 6 is detected by a heat storage body temperature detecting element 15 and compared with a prescribed value to control the opening of the damper 11 or the operation of the air blowing part 14 for heat radiation, and the appropriate air supply temperature can be kept for safe service.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric heat storage heater for storing heat in a heat storage body by using midnight power and radiating the heat of the heat storage body during the daytime for heating.

[0002]

2. Description of the Related Art In recent years, an electric heat storage heater has been used which releases heat stored in a heat storage section to heat it. Conventionally, this kind of electric heat storage heater has a general configuration as shown in FIG. That is, the heat storage unit 102 provided in the main body case 101 is provided with the heat radiation path 103 and the heat generating portion 104 in the center, and the heat storage body 105 and the heat insulating material 106 in the front and rear.
The heat storage unit 102 is provided with a heat radiation port 107 and a heat radiation damper 108, a main body case 101 is provided with a blowout port 109 at the upper front surface thereof, and a switch device 110 made of bimetal for opening and closing the heat radiation damper 108 is provided. The switchgear 110 applies thermal deformation of bimetal, and closes the heat radiation damper 108 when the heat storage body 105 is at a high temperature and opens the heat radiation damper 108 when the temperature of the heat storage body 105 decreases.

In the above structure, when the heat storage operation is performed by using the midnight power, the heat generating portion 104 is energized to store the heat storage body 1.
When the heat is stored in 05, the heat-dissipation damper 108 is closed by the switchgear 110, and after the power is supplied for a predetermined time, the heat generation section 104 is de-energized to complete the heat storage.

Next, heat radiation operation is started with the heat radiation damper 108 closed, and as the temperature of the heat storage body 105 decreases, the heat radiation damper 108 opens due to the action of the switchgear 110, and heat is radiated from the air outlet 109 to heat the room. Met.

[0005]

In such a conventional electric heat storage heater, the hot air discharged from the air outlet 109 during heat storage heating is naturally emitted upward from the air outlet 109 of the main body case 101. Since the heating is performed by convection, there is a problem that only the ceiling portion above the main body is heated first as room heating, and it takes time to heat the entire room.

There is also a method of using a forced convection method in which a fan is provided in the heat radiation path as shown in Japanese Patent Publication No. 57-55982, but when used in a quiet room or at bedtime, the fan motor causes There was a problem that noise may occur.

Further, in the forced convection electric heat storage heater, when the heat radiating blower is driven to radiate heat when the heat storage amount of the heat storage body 105 is large, the temperature of the hot air discharged from the air outlet 109 at the start of operation is greatly increased. There was a problem of rising.

In the natural convection type electric heat storage heater, since the switchgear 110 is made of bimetal,
There is a problem that the opening / closing angle of the heat radiation damper 108 cannot be finely controlled with respect to the set temperature.

Moreover, although the heat is stored in the heat storage body 105 by using the midnight power, there is a problem that the heating capacity is significantly reduced when the heat storage amount is reduced outside the midnight power supply time.

The present invention solves the above problems, and a first object thereof is to provide an electric heat storage heater capable of performing quiet heating without generating noise and quickly heating the entire room.

A second object is to prevent hot hot air from being discharged from the air outlet when the heat storage amount of the heat storage body is large.

A third object is to finely control the amount of heat released by natural convection from the air outlet when the amount of heat stored in the heat storage body is large.

A fourth object is to increase the amount of air discharged from the air outlet without increasing the rotation of the fan,
Another object is to prevent hot air from being discharged.

A fifth object is to prevent the heating capacity from being lowered even outside the midnight power supply time.

[0015]

The first means for achieving the first object of the present invention is to provide a main body case having an air outlet in the upper part and an air inlet in the lower part, and A heat storage unit provided, and a heat dissipation path communicating with the air outlet and the air inlet provided in the heat storage unit,
The damper is provided at the upper part of the heat radiation path so as to be openable and closable, and the heat radiation blower is provided at the lower part of the heat radiation path.

The second object for achieving the second object
Means has a heat storage body temperature detection element for detecting the temperature of the heat storage unit, and a control device for driving and controlling the damper and the radiating fan for heat radiation, and this control device has a temperature detected by the heat storage body temperature detection element at a predetermined temperature. In the above case, only the damper is controlled, and when the detected temperature is lower than a predetermined temperature, the damper and the heat-dissipating blower unit are controlled.

A third object for achieving the third object
The means is a heat storage body temperature detecting element that detects the temperature of the heat storage unit, a control device that drives and controls the damper and the radiating fan for heat radiation, a room temperature detecting element that detects the room temperature, and an operation unit that inputs the set temperature in the room. When the detected temperature of the heat storage body temperature detecting element is equal to or higher than a predetermined temperature, the control device can change the opening angle of the damper according to the difference between the set temperature and the room temperature.

The fourth object for achieving the fourth object
Means is an air outlet chamber provided on the upstream side of the air outlet,
With a ventilation path provided between the main body case and the heat storage unit,
The tip of the ventilation passage is configured to communicate with the air blowing chamber.

Further, the fifth object for achieving the fifth object
This means has a structure in which an auxiliary heater is provided at the upper end of the heat storage unit.

[0020]

According to the present invention, by the structure of the first means described above, the heat dissipation air blower is stopped and the damper provided at the upper part of the heat dissipation path is opened to enable silent heating by natural convection and the heat dissipation air blower. By sending hot air stored in the heat storage unit as warm air by the operation of 1, the heating effect of the room can be enhanced.

Further, by the structure of the second means, when the heat storage amount of the heat storage unit is large, the damper is opened small to reduce the heat radiation amount, and when the heat storage amount is small, the opening of the damper is increased and the heat radiating air is blown. By operating the section, the temperature discharged from the air outlet can be reduced.

Further, according to the constitution of the third means, when the heat storage amount of the heat storage unit is large and the difference between the set temperature and the room temperature is small, the damper is opened small by the switchgear to reduce the heat radiation amount, and the set temperature and the room temperature are reduced. When the difference is large, the damper can be opened widely to increase the amount of heat radiation, and the amount of hot air discharged from the air outlet can be adjusted.

Further, according to the structure of the fourth means, the air flow passing through the ventilation passage between the main body case and the heat storage unit increases due to the force of the warm air discharged from the heat radiation passage during the operation of the blower unit. The airflows at room temperature are mixed and adjusted to an appropriate temperature, and the amount of air can be increased and discharged.

Further, according to the constitution of the fifth means, when the heat storage amount of the heat storage unit is insufficient outside the midnight power supply time zone, the auxiliary heater provided at the upper end portion of the heat radiation path is energized to cause natural convection or forced ventilation. It can be heated according to any of the above.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. As shown in the figure, an air outlet 3 is opened in the upper front portion of the main body case 1, and an air outlet chamber 2 is formed in communication with the air outlet 3. Air intake ports 5 provided in the lower front portion and the lower rear portion of the main body case 1 are for introducing indoor air into the air suction chamber 4.
A heat storage unit 6 is arranged in the center of the main body case 1, a heat storage body 7 is disposed in the heat storage unit 6, and the heat storage body 7 has a plurality of heat dissipation paths 8 communicating with the air blow-out chamber 2 and the air suction chamber 4.
And the heat insulating material 1 so as to further surround the heat storage body 7.
0 is provided.

A heating element 9 is arranged inside the heat storage element 7,
This heating element 9 is connected to a heat storage switch (not shown) to
It is connected to a 00V power supply. The heat storage unit 6 is provided with a damper 11 that opens and closes the upper opening 8a of the heat radiation path 8, the air outlet chamber 2 is provided with an exhaust gas temperature detection element 12, and the damper 11 has a temperature detected by the exhaust gas temperature detection element 12. Based on this, it is driven by the opening / closing device 13. That is, the opening / closing device 13 includes the motor 13a and the link 1
3b and 13c, the opening / closing angle of the damper 11 is changed by the vertical movement of the tip of the link 13c, and the upper opening 8a is formed.
The amount of heat radiated from is adjusted. A heat radiating blower 14 is provided in the air suction chamber 4 below the heat storage unit 6.

In the above structure, when heat is stored, first the damper 11 closes the upper opening 8a of the heat radiation path 8,
The heat generating body 9 is energized for about 8 hours by using midnight power to store heat in the heat storage body 7. Next, the heating element 9 is de-energized and the damper 1
The heat of the heat storage body 7 is radiated from the air outlet 3 while driving the opening / closing device 13 to adjust the opening angle. At this time, it is possible to quietly heat the room by stopping the heat radiation blower 14.

Further, by operating the heat radiating blower 14 with the damper 11 open to ventilate the heat radiating path 8,
A large amount of heat of the heat storage body 7 can be released from the air outlet 3, and the heating effect of the room can be enhanced.

As described above, according to the electric heat storage heater of the first embodiment of the present invention, after the heat is stored in the heat storage body 7, only the damper 11 is opened / closed so that the hot air is naturally convected in the room. When the heat-dissipating blower unit 14 is operated, a large amount of heat of the heat storage body 7 can be released in a short time, so that the room heating effect can be enhanced.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those described in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. As shown in the figure, a heat storage unit temperature detection element 15 such as a thermistor for detecting the temperature of the heat storage unit 7 is pivotally attached to the heat storage unit 6. The control device 16 drives only the damper 11 when the detected temperature of the heat storage element temperature detection element 15 is higher than a predetermined temperature (about 140 ° C. setting), and when the detected temperature is lower than the predetermined temperature, the damper 11 and the heat-dissipating blower unit. 14 is driven.

With the above configuration, when the heat storage body 7 is sufficiently stored with heat and the detected temperature of the heat storage body temperature detecting element 15 is higher than the predetermined temperature, the control device 16 drives only the damper 11. Then, the upper opening 8a is half opened.
The heat of the heat storage body 7 is gradually radiated from the air outlet 3 and becomes an updraft, so that the room can be heated by natural convection.
At this time, the temperature of the hot air flow discharged from the air outlet 3 is kept within a relatively safe temperature range.

Next, when the temperature of the heat storage body 7 drops below a predetermined temperature, the control device 16 operates the heat radiating blower 14 to discharge a large amount of the heat of the heat storage body 7 from the air outlet 3 as warm air. It is possible to increase the heating effect of the room.

As described above, according to the electric heat storage heater of the second embodiment of the present invention, when the temperature of the heat storage body 7 is higher than the predetermined temperature, only the damper 11 is half-opened and then the heat is gradually released to raise the temperature. It is possible to prevent hot air from being discharged and to operate safely.

Next, a third embodiment of the present invention will be described with reference to FIGS. The first embodiment and the second embodiment
The same components as those described in the embodiments are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, a room temperature detecting element 17 such as a thermistor is provided near the air suction port 5 to detect the room temperature. An operation unit 18 is provided on the surface of the main body case 1 so that the room temperature desired by the user can be input as the set temperature.

With the above configuration, the heat storage body temperature detecting element 15
If the detected temperature of the
When the set temperature input in 8 is equal to or higher than that of the room temperature detecting element 17, the control device 16 drives the opening / closing device 13 to close the damper 11. In addition, the set temperature is room temperature detection element 17
When the temperature difference is 2 ° C. or less and the temperature difference is less than 2 ° C., the damper 11 is half-opened, and when the temperature difference exceeds 2 ° C., the damper 11 is fully opened.

Therefore, when heat is stored in the heat storage body 7 and the temperature detected by the heat storage body temperature detecting element 15 is higher than a predetermined temperature, the control device 16 closes the opening angle of the damper 11 according to the difference between the set temperature and the room temperature. , 3 steps of half open, full open,
By adjusting the amount of hot air radiated from the air outlet 3, the room temperature can be quickly brought close to the set temperature and stable operation can be performed.

As described above, according to the electric heat storage heater of the third embodiment of the present invention, the hot air radiated from the air outlet 3 by changing the opening angle of the damper 11 in multiple stages depending on the temperature difference between the set temperature and the room temperature. By changing the amount, it is possible to prevent the room temperature from rising too high, and to raise the room temperature to the set temperature in a short time to stabilize the operation.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. The same components as those described in the first to third embodiments are designated by the same reference numerals and detailed description thereof will be omitted. As shown in FIG.
A space serving as a ventilation path 19 is formed between the four side surfaces of No. 4 and the heat storage unit 6, and this ventilation path 19 serves to introduce the air in the room and guide it to the air blowing chamber 2. In addition, ventilation path 1
Since 9 is adjacent to the heat storage body 7 and is warmed, the ventilation passage 19
There is an updraft inside.

With the above configuration, when the detected temperature of the heat storage body 7 is lower than the predetermined temperature and the temperature difference between the set temperature and the room temperature is large, the control device 16 opens the damper 11 and operates the heat radiating blower 14. When the heat of the heat storage body 7 is sent out to the air blowing chamber 2 through the heat radiating passage 8 by the air blowing of the heat radiating blower 14, the ascending airflow from the ventilation passage 19 is accelerated and mixed in the air blowing chamber 2 to blow out temperature. Is reduced to an appropriate temperature, and at this time, the amount of air discharged from the air outlet 3 is also increased, and the room heating effect can be further enhanced.

As described above, according to the electric heat storage heater of the fourth embodiment of the present invention, the ascending airflow of the ventilation path 19 is attracted to the air blow-out chamber 2 by the air blowing of the heat-dissipating air blower 14 and mixed,
The temperature of the warm air blown out from the air outlet 3 is lowered to an appropriate temperature, and the amount of airflow increases, so that the range in which the warm air reaches is expanded and the heating effect can be further enhanced.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. The same components as those described in the first to fourth embodiments are designated by the same reference numerals and detailed description thereof will be omitted. As shown in the figure, an auxiliary heater 20 such as a sheath heater is provided at the upper end of the heat storage unit 6. This auxiliary heater 20 is 100
It is connected to the V power supply and can be energized even outside the midnight power energization period.

With the above configuration, during normal operation, heating is performed by utilizing the heat storage energized at midnight, but when the heat storage amount of the heat storage unit 6 becomes low during the time when the nighttime electric power cannot be used, the auxiliary heater 20 is used. By heating the damper 11 and opening the damper 11, it is possible to perform heating by natural convection. Furthermore, since the heat-dissipating blower unit 14 can be a hot-air heating system that operates at the same time, it is possible to select a heating system according to the user's preference.

As described above, according to the electric heat storage heater of the fifth embodiment of the present invention, even when the heat storage amount of the heat storage unit 6 is insufficient and the heating capacity cannot be sufficiently exerted outside the midnight power energization time, the auxiliary power It is possible to selectively use heating operation by natural convection in which only the heater 20 is energized and warm air heating in which the heat radiation blower unit 14 is simultaneously operated.

[0045]

As is apparent from the above embodiments, according to the present invention, after the heat is stored in the heat storage body, only the damper is opened / closed to perform the natural convection silent heating and to operate the heat radiating blower. By releasing a large amount of heat of the heat storage body,
It is possible to provide an electric heat storage heater having an effect of further increasing the heating effect.

Further, the temperature of the heat storage unit is detected by the heat storage element detection element, and when the temperature is higher than the predetermined temperature, the damper is driven only by the control device so that the temperature of the discharged heat air flow falls within a safe temperature range. It is possible to provide an electric heat storage heater having an effect of being able to maintain it.

Further, the opening angle of the damper is changed in multiple steps according to the temperature difference between the set temperature and the room temperature, and the amount of hot air discharged from the air outlet is increased or decreased to bring the room temperature close to the set temperature. It is possible to provide an electric heat storage heater having an effect that the room temperature is raised in time and stable operation is possible.

Further, an air passage is provided between the inner surface of the main body case and the heat storage unit, and the tip of the air passage is connected to the air outlet so that the upward air flow from the air passage is blown by the air radiating portion for heat radiation. It is possible to provide an electric heat storage heater having the effect that the hot air temperature can be lowered to an appropriate temperature by being mixed with the hot air and the air volume can be increased to further enhance the heating effect.

Further, by providing the auxiliary heater connected to the 100V power source at the upper end of the heat storage unit, even when the amount of stored heat is insufficient outside the energizing time of the midnight power, heating by natural convection of only the auxiliary heater, Alternatively, it is possible to provide an electric heat storage heater having an effect that any one of warm air heating with additional ventilation can be selected and used.

[Brief description of drawings]

FIG. 1 is a side sectional view of an electric heat storage heater according to first to fifth embodiments of the present invention.

FIG. 2 is a front sectional view of the same.

[Fig. 3] Exterior view of the same

FIG. 4 is a side sectional view of a conventional electric heat storage heater.

[Explanation of symbols]

 1 Main Body Case 2 Air Blowout Room 3 Air Blowout 5 Air Suction Port 6 Heat Storage Unit 8 Heat Radiating Path 11 Damper 14 Heat Dissipation Blower 15 Heat Storage Body Temperature Detecting Element 16 Control Device 17 Room Temperature Detecting Element 18 Operating Section 19 Ventilation Path 20 Auxiliary Heater

Claims (5)

[Claims] 1. A body case having an air outlet on the upper part and an air inlet on the lower part, a heat storage unit provided in the body case, and the air outlet and the air inlet provided in the heat storage unit. An electric heat storage heater having a heat dissipation path communicating with the damper, a damper provided on the upper side of the heat dissipation path so as to be openable and closable, and a ventilation fan for heat dissipation provided under the heat dissipation path. 2. A heat storage body temperature detecting element for detecting the temperature of the heat storage unit, and a control device for driving and controlling a damper and a heat radiating blower, wherein the control device detects a predetermined temperature of the heat storage body temperature detecting element. The electric heat storage heater according to claim 1, wherein only the damper is controlled when the temperature is equal to or higher than a temperature, and the damper and the radiating fan for heat radiation are controlled when the detected temperature is lower than a predetermined temperature. 3. A heat storage element temperature detecting element for detecting the temperature of a heat storage unit, a control device for driving and controlling a damper and a heat radiating blower, a room temperature detecting element for detecting a room temperature, and an operation for inputting a set temperature in the room. The electric device according to claim 1 or 2, further comprising: Heat storage heater. 4. An air outlet chamber provided upstream of the air outlet, and an air passage provided between the main body case and the heat storage unit. The tip of the air passage communicates with the air outlet chamber. The electric heat storage heater according to claim 1, 2, or 3. 5. The electric heat storage heater according to claim 1, 2, 3, or 4, wherein an auxiliary heater is provided at an upper end portion of the heat storage unit.