KR101971993B1 - A Electric heat wind apparatus using heat storage material - Google Patents

Abstract

The present invention relates to an electric hot air fan for performing heating by warm air. The electric fan heater using the heat accumulating material according to an embodiment of the present invention may include a main body casing having a suction port through which air is sucked and a discharge port through which the sucked air is discharged, and a fan motor installed in the suction port or the discharge port of the main casing, A heat exchanger installed in the main body casing for heat exchange with the air sucked into the suction port, an electric heater installed in the heat exchanger and heated by electricity, and a heat exchanger installed inside the heat exchanger, And a heat storage material accommodated in the heat exchanger, the heat storage material being accommodated in the heat exchanger and heated by the heat oil heated by the electric heater to accumulate heat, characterized in that: , The heat exchanger may increase the pressure of the heat medium oil When installed groups breakage pressure tank, and the heat exchanger to prevent the group exceeds a preset pressure the pressure of the heat exchanger by the heating medium oil, and a safety valve for discharging the pressure by opening an the heat exchanger. Therefore, it is possible to improve the thermal efficiency and to prevent the breakage of the heat exchanger and the occurrence of safety accidents.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric heat wind apparatus using heat storage material,

The present invention relates to an electric hot air fan for performing heating by warm air.

Generally, in order to perform heating, the heater is directly distinguished by a heater that radiates heat and a hot air fan that heats the surrounding air to perform heating.

On the other hand, a heater is used to heat a relatively narrow place because only a portion directly contacting the heat can be heated. However, when heating a relatively wide place, a hot air fan is used.

Such a hot air fan is provided with a heat exchanger which generates heat on the front surface thereof, and is configured to heat the air while passing air through a blower to heat the fan. In a general hot air fan, the temperature of the heat exchanger is lowered by the wind of the blower, .

To solve this problem, a conventional hot air fan has been disclosed in Korean Patent Laid-Open No. 10-2008-0018023 as an " air conditioner ".

A conventional air conditioner is an air conditioner in which a cover having a discharge port formed at a lower side of a lower portion of an air conditioner body and having a suction port formed at an upper portion thereof and a heat exchanging portion inside the air conditioner body, Wherein the storage tank is connected to a first connection pipe at an upper portion of a heating pipe having a heater for generating heat by a supplied power source and a unit heat exchange tank is coupled to a second connection pipe at an upper portion of the storage tank, The unit heat exchange tank is configured such that each of the branch tanks coupled to the second connection pipe is connected to the branch pipe, the heating pipe, the storage tank, and the unit heat exchange tank are filled with a heating medium, The connected motor is configured to be coupled.

However, in the conventional air conditioner, the heat medium is heated by the heater, the pressure is increased, and the weak portion is broken at the connection portion of the heat exchanging portion, or leakage occurs.

Further, considering the expansion of the heat medium, the amount of the heat medium to be filled in the heat exchanger is limited, and the heat efficiency is not high.

Further, there is a problem that a safety accident occurs because there is no safety device due to expansion of the heating medium.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a heat exchanger which is capable of preventing breakage and leakage of a heat exchanger due to expansion pressure of a heat medium, And an object of the present invention is to provide an electric hot air heater using a heat storage material which can prevent the occurrence of a safety accident, reduce power consumption, increase the charged amount of heat medium, and increase heating efficiency.

It is another object of the present invention to provide an electric fan heater using a heat storage material capable of improving heating efficiency by an auxiliary means.

According to a first aspect of the present invention, there is provided an electric fan heater using a heat storage material, comprising: a main body casing having a suction port through which air is sucked and a discharge port through which sucked air is discharged; A blower installed in the main body casing for forcibly sucking air into the suction port and discharging the air to the discharge port, a heat exchanger installed in the main casing to exchange heat with air sucked into the suction port, and a heat exchanger installed in the heat exchanger, An electric heater, a heat medium oil accommodated in the heat exchanger and heated by the electric heater, and a heat storage material accommodated in the heat exchanger and heated by the heat medium oil heated by the electric heater to accumulate heat Wherein the heat exchanger is a heat exchanger for heating the heat medium oil A pressure tank installed in the heat exchanger for opening the heat exchanger and discharging the pressure when the pressure of the heat exchanger by the heat medium oil exceeds a predetermined pressure, Valve.

The controller may further include a controller for controlling the operation of the electric heater, wherein the controller stops operation of the electric heater when the heating medium oil exceeds a predetermined temperature to reduce power consumption, The electric heater can be operated.

The heat exchanger includes a lower tank installed with the electric heater and heating the thermal oil, an upper tank positioned above the lower tank and positioned so that the heating oil heated in the lower tank rises, and an upper tank disposed above the lower tank, And a heat accumulating unit which is disposed between the heat accumulating unit and the heat storage unit and is accommodated in the heat storage unit so that the heat storage oil heated by the electric heater rises to the upper tank and accumulates the heat storage material.

A heating unit which is installed in a staggered manner at the inlet or outlet and is connected to the heat exchanger to preheat the air heated by the heating oil heated by the electric heater to be sucked into the suction port, Line. ≪ / RTI >

And a selection valve that opens or closes the auxiliary heating line to selectively supply the heating fluid contained in the heat exchanger to the auxiliary heating line.

The heat storage unit may include a reduction diaphragm for reducing the traveling speed of the heat medium oil to secure a time for the heat storage material accommodated in the heat storage unit to store heat of the heat medium oil.

And a scatter preventive cover provided on the safety valve to prevent an image due to the scattering of the heat medium discharged from the safety valve when the safety valve is opened, wherein the scatter preventive cover has a portion where the heat medium oil flows out from the safety valve And a medium storage unit for collecting the heat medium oil flowing through the guide unit and storing the heat medium oil which is installed at the end of the guide unit.

According to the present invention, a pressure tank is installed in the heat exchanger to fill the maximum amount of the heat medium oil, thereby improving the thermal efficiency and preventing the generation of cracks and leakage due to the expansion pressure of the heat medium oil.

Further, it is possible to prevent the heat exchanger from being damaged when the safety valve is installed and excessive pressure is generated.

In addition, by storing the heat of the heat medium oil by the heat accumulating material to maintain the temperature of the heat medium oil, it is possible to improve the heating efficiency, reduce the operation of the electric heater, and reduce the power consumption.

In addition, thermal efficiency can be improved by preheating or heating the air after the auxiliary heating line is installed to heat the air.

In addition, it is possible to prevent the occurrence of safety accidents due to the scattering of the heat medium oil when the safety valve is opened by providing a scatter preventive cover.

1 is a perspective view illustrating an electric hot air heater using a heat storage material according to a first embodiment of the present invention.
FIG. 2 is a side cross-sectional view illustrating an electric hot air heater using a heat storage material according to a first embodiment of the present invention.
3 is a front sectional view showing an electric hot air heater using a heat storage material according to the first embodiment of the present invention.
4 is a perspective view illustrating a heat exchanger constituting an electric fan heater using a heat storage material according to a second embodiment of the present invention.
5 is a side cross-sectional view illustrating an electric heat fan using a heat storage material according to a second embodiment of the present invention.
FIG. 6 is a front sectional view showing an electric fan unit using a heat storage material according to a second embodiment of the present invention, and is a view for explaining a scatter prevention cover. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 3, the electric fan 100 using the heat storage material according to the first embodiment of the present invention may include a main body casing 110.

The main body casing 110 may be formed in a box shape having a hollow interior and a suction port 111 through which air is sucked may be formed on a rear surface of the main casing 110. A discharge port (113) may be formed.

On the other hand, the main body casing 110 may be provided with a controller to be described later to expose a control unit capable of setting a temperature or turning on and off an operation.

The electric fan 100 using the heat storage material according to the first embodiment of the present invention may include the blower 120. [

The blower 120 may be installed in the air inlet 111 or the air outlet 113.

In the embodiment, the blower 120 is installed in the suction port 111 so that air is forcibly sucked from the suction port 111 and discharged to the discharge port 113.

Meanwhile, the blower 120 may be installed by applying various known blowers 120 that rotate the fan by an electric motor.

2 and 3, the electric hot air heater 100 using the heat storage material according to the first embodiment of the present invention may include a heat exchanger 130.

The heat exchanger 130 can be heated by passing heat through the air sucked into the inlet 111.

The heat exchanger 130 may include a lower tank 131, an upper tank 133, and a heat storage unit 135.

An electric heater 140 to be described later is inserted into the lower tank 131 to be installed on the side surface of the lower tank 131, A heater mounting hole can be formed.

At this time, the electric heater 140 may be detachably installed in the heater installation hole so that the electric heater 140 can be replaced according to the life of the electric heater 140.

Like the lower tank 131, the upper tank 133 may be formed in a hollow cylindrical shape or may be spaced apart from the upper portion of the lower tank 131.

In addition, the upper tank 133 may be heated by the heating medium oil 150 filled in the lower tank 131 and may move in accordance with natural convection.

A plurality of heat storage units 135 may be installed between the upper tank 133 and the lower tank 131. The heat storage unit 160 may be installed inside the heat storage unit 135, .

The heat accumulating unit 135 may be a pipe having a circular or polygonal shape and the heat accumulating unit 135 may connect the lower tank 131 and the upper tank 133 so that a passage through which the heat medium oil 150 circulates .

A communication hole may be formed in each of the upper tank 133 and the lower tank 131 in which the heat storage unit 135 is installed so that the accommodated thermal oil 150 can circulate. A heat radiating fin may be formed around the heat accumulating portion 135 to widen the contact area for heat exchange with the air passing through the heat accumulating portion 135.

On the other hand, in the heat accumulating part 135, the moving speed of the heating medium oil 150 is reduced so that the heat of the heated heat medium oil 150 is accumulated in the heat accumulating material 160 in the longitudinal direction of the heat accumulating part 135, A plurality of deceleration diaphragms 137 may be installed to increase the contact time between the oil chambers 160 and the heating medium oil 150.

At this time, a plurality of through holes may be formed in the deceleration partition plate 137 to allow the thermal oil 150 to flow.

As shown in FIGS. 2 and 3, the electric heater 100 using the heat storage material according to the first embodiment of the present invention may include an electric heater 140.

The electric heater 140 may be heated by the electric resistance and the electric heater 140 may be installed in the lower tank 131 of the heat exchanger 130 and may be installed in the heat exchanger 130, 150 may be heated.

Meanwhile, the electric heater 140 may be controlled by a controller, which will be described later, and the electric heater 140 may be detachably coupled to the heat exchanger 130.

At this time, the electric heater 140 can be heated to a temperature of about 200 ° C to 300 ° C.

As shown in FIGS. 2 and 3, the electric heat fan 100 using the heat storage material according to the first embodiment of the present invention may include a heating medium oil 150.

The heating oil 150 may be heated by an electric heater 140, and the heating oil 150 may be an industrial lubricating oil or a mineral oil.

Here, since the heating medium oil 150 is heated to a temperature higher than that of water used as a normal heating medium, the temperature generated by the heat exchanger 130 can be increased.

On the other hand, the heating medium oil 150 may be a heating medium oil 150 having a boiling point of 150 ° C or higher.

The heating medium oil 150 is heated by the electric heater 140 in the lower tank 131 of the heat exchanger 130 and the heated heating medium oil 150 is heated by the upper tank 133 through the heat storage unit 135. [ And the heating medium oil 150 raised to the upper tank 133 can be circulated by the natural convection to the lower tank 131 through the heat storage unit 135 again while the temperature is lowered.

At this time, the heat medium oil 150 can be hermetically accommodated in the heat exchanger 130 so that the vapor is not discharged due to boiling by the electric heater 140.

As shown in FIGS. 2 and 3, the electric heat fan 100 using the heat storage material according to the first embodiment of the present invention may include a heat storage material 160.

The heat storage material 160 removes heat from the heating medium oil 150 heated by the electric heater 140 and accumulates heat to maintain the temperature of the heating medium oil 150 for a long time.

That is, since the heat storage material 160 accumulates the heat of the heating medium oil 150, the electric heater 140 performs heat exchange with the heating medium oil 150 for a long period of time without continuously heating the heating medium oil 150, 150, the electric consumption due to the continuous heating of the electric heater 140 can be minimized.

On the other hand, the heat storage material 160 may be a gravel which is a mineral having high heat resistance.

Here, the gravel is more heat-shrinkable than other minerals, and the heat of the thermal oil 150 can be maintained for a long period of time by storing the heat of the thermal oil 150 for a long period of time.

The particle size of the heat storage material 160 may vary depending on the size of the heat exchanger 130, but the particle size of the heat storage material 160 may be approximately 2 cm to 5 cm.

As shown in FIGS. 1 to 3, the electric heat fan 100 using the heat storage material according to the first embodiment of the present invention may include a pressure tank 170.

The pressure tank 170 can secure a space in which the heating medium oil 150 expands according to the heating by the electric heater 140, thereby reducing the pressure applied to the heat exchanger 130.

The pressure tank 170 may be coupled to the upper end of the heat exchanger 130 and the pressure tank 170 may be provided with a pressure gauge 171 for measuring the pressure acting on the heat exchanger 130.

Here, when the pressure tank 170 is not provided in the heat exchanger 130, there is a possibility that the heat exchanger 130 cracks or leaks due to the expansion pressure of the heating medium oil 150 The amount of the heat medium oil 150 to be filled in the heat exchanger 130 should be small in consideration of the expansion of the heat medium oil 150.

However, when the pressure tank 170 is installed, cracking or leaking of the heat exchanger 130 due to the expansion of the heat medium oil 150 can be prevented, and the amount of the heat medium oil 150 to be filled in the heat exchanger 130 The heat efficiency of the heat exchanger 130 can be improved.

1 to 3, the electric heat fan 100 using the heat storage material according to the first embodiment of the present invention may include a safety valve 175.

The safety valve 175 is installed in the heat exchanger 130 so that when a pressure exceeding a predetermined pressure that can be accommodated in the pressure tank 170 is applied due to the expansion of the heat medium oil 150, So that the pressure acting on the heat exchanger 130 by the heat medium oil 150 can be reduced.

On the other hand, the safety valve 175 may be provided directly to the heat exchanger 130 or may be installed in the pressure tank 170.

The electric heat fan 100 using the heat storage material according to the first embodiment of the present invention may include a controller (not shown).

This controller can control the electric heater 140 and the blower 120.

On the other hand, the controller may include an air temperature sensor.

The air temperature sensor can measure the temperature of the heated air discharged through the discharge port 113 or an external temperature, and provide the measured temperature to the controller.

On the other hand, the controller can operate the blower 120 to reach a predetermined temperature when the temperature measured by the air temperature sensor is lower than a predetermined temperature.

Then, the controller can set the temperature at which heating by the heated air is performed, including the operating unit.

The controller may also include a media temperature sensor.

The medium temperature sensor can measure the temperature of the heat medium oil heated by the electric heater 140 and provide the measured temperature to the controller.

On the other hand, the controller can control the electric heater 140 so that the temperature measured by the medium temperature sensor maintains the predetermined temperature.

For example, when the predetermined temperature range is 200 占 폚, the operation of the electric heater 140 is stopped when the heating medium oil 150 is higher than 200 占 폚, and the electric heater 140 is operated when the heating medium oil 150 is lower than 200 占 폚 .

In this way, the controller can operate the electric heater 140 only when the temperature is less than the predetermined temperature, thereby minimizing the power consumption of the electric heater 140, not by continuously operating the electric heater 140 with the medium temperature sensor.

The operation and effects of the above-described respective structures will be described.

The electric heater 100 using the heat storage material according to the first embodiment of the present invention measures the temperature of the outside by the air temperature sensor when power is supplied to the controller and when the temperature measured by the air temperature sensor is preset And operates the electric heater 140 when the temperature is less than the predetermined temperature.

When the electric heater 140 is operated, the electric heater 140 heats the heating medium oil 150 stored in the heat exchanger 130, and the heating medium oil 150 heated in the lower tank 131 is heated by convection (135) to the upper tank (133).

At this time, the heat medium oil 150 passes through the heat accumulating section 135 and is contacted with the heat accumulating material 160 to accumulate the heat of the heat medium oil 150 in the heat accumulating material 160. In the heat accumulating section 135, The time for the thermal oil 160 to contact with the thermal oil 160 can be secured by reducing the moving speed of the thermal oil 150 moving to the upper tank 133 by providing the heat transfer member 137.

On the other hand, when the heating medium oil 150 is heated and the temperature measured by the medium temperature sensor reaches a predetermined temperature, the operation of the electric heater 140 is stopped, and the inlet 120 And discharges the air to the discharge port 113 through the heat exchanger 130. [

In the initial operation, the blower 120 is configured to be operated after the heating medium oil 150 is heated for rapid heating of the heat exchanger 130. However, in the initial operation, the electric heater 140 and the blower 120 ) May be configured to work together.

When the air temperature sensor reaches a predetermined temperature, the operation of the blower 120 is stopped. When the temperature of the blower 120 is lowered again, the blower 120 is operated again.

At this time, the heating medium oil 150 can be maintained at a predetermined temperature by repeatedly operating the heating medium oil 150 so that the heating medium oil 150 can maintain a predetermined temperature, separately from the air temperature sensor.

Hereinafter, a second embodiment of the present invention will be described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the same components have the same functions and effects, and a detailed description thereof will be omitted.

As shown in FIGS. 4 and 5, the electric heater 100 using the heat storage material according to the second embodiment of the present invention may include an auxiliary heating line 180.

The auxiliary heating line 180 can preheat the air for heating with the heat exchanger 130 or reheat the air passing through the heat exchanger 130 to improve the thermal efficiency.

The auxiliary heating line 180 may be directly heated by the heating medium oil 150 by partially circulating the heating medium oil 150 accommodated in the heat exchanger 130. The auxiliary heating line 180 may be heated by the high- , Copper, stainless steel, aluminum, and the like.

The auxiliary heating line 180 is formed by forming a thin pipe in a zigzag shape and connecting one end and the other end of the pipe to the upper tank 133 or the lower tank 131 to connect the upper tank 133 or the lower tank 131, So that the oil 150 can be heated while being circulated.

At this time, one end of the auxiliary heating line 180 is connected to the upper tank 133, and the other end of the auxiliary heating line 180 is connected to the lower tank 131 so that the heating medium is circulated by natural convection Of course.

Meanwhile. When the zigzag-shaped portion of the auxiliary heating line 180 is positioned on the suction port 111 side of the casing, the sucked air can perform preheating before passing through the heat exchanger 130, It is possible to perform the post heat to reheat the air to be heated and discharged.

In the second embodiment, the auxiliary heating line 180 is installed at the outlet 113 to perform the post-heating.

A selection valve 181 is provided in the auxiliary heating line 180 so that the heating medium oil 150 heated by the heat exchanger 130 supplies the auxiliary heating line 180 or cuts off the supply of the auxiliary heating line 180, 180 < / RTI >

Here, the auxiliary heating line 180 can improve the thermal efficiency by requiring rapid heating or by preheating or post-heating the air by operating at a low-winter temperature edge.

On the other hand, the zigzag-shaped portion of the auxiliary heating line 180 is attached to a grill of metal material installed to protect the suction port 111 or the discharge port 113, and the grill is also heated by the auxiliary heating line 180, 111 or the outlet 113. In this case,

The heat storage material 160 is also filled in the auxiliary heating line 180 and the heat storage material 160 accumulates heat by the heating medium oil 150 passing through the auxiliary heating line 180, It is possible to prevent the heat from dropping rapidly.

As shown in FIG. 9, the electric heat fan 100 using the heat storage material according to the second embodiment of the present invention may include a scatter preventing cover 190.

This scatter preventive cover 190 can prevent the heat medium oil 150 discharged when the safety valve 175 is opened by the pressure of the heat exchanger 130 from being scattered to the outside.

Since the heat medium oil 150 is heated by the electric heater 140 and most of the electric heat fans 100 are installed at the eye level position away from the floor, the heat medium oil 150 may cause an accident, and contamination due to leakage of the thermal oil 150 may occur.

On the other hand, the scatter-proof cover 190 may include a cap portion 191, a guide portion 193, and a medium storage portion 195.

The cap portion 191 is coupled to a portion for discharging the pressure from the safety valve 175 to prevent scattering of the heating medium oil 150 according to the opening of the safety valve 175.

A guide portion 193 for guiding the heat medium portion scattered by the cap portion 191 to the lower portion may be formed at a lower portion of the cap portion 191. A media storage portion 195 is formed below the guide portion 193 .

The medium storage part 195 is disposed in the lower part of the guide part 193 in the form of a container and collects and stores the lower part of the heat medium flowing through the guide part 193 to thereby cause the heat medium oil 150 to flow to the outside, Can be prevented.

The electric fan 100 using the heat storage material according to the second embodiment configured as described above is a part of the heating medium oil 150 circulating the heat exchanger 130 when the auxiliary heating line 180 is opened by the selection valve 181 Is introduced into the auxiliary heating line 180 and the introduced heating medium oil 150 heats the auxiliary heating line 180 through the auxiliary heating line 180.

At this time, when the auxiliary heating line 180 is installed in the suction port 111 according to the installation position of the auxiliary heating line 180, preheating is performed so that the sucked air can be heated quickly before being heated by the heat exchanger 130 And when it is installed in the discharge port 113, the heated air is heated once again to perform the post heat which raises the temperature.

In addition, when the pressure of the heat exchanger 130 is increased and the safety valve 175 is opened, the heat medium oil 150 scattered along with the opening of the safety valve 175 is scattered to the inner periphery of the cap portion 191, The heated thermal oil 150 flows downward through the guide portion 193 and collects in the medium storage portion 195 to prevent generation of an image due to scattering of the thermal oil 150 or contamination of the external environment .

Therefore, in the electric heat exchanger 100 using the heat storage material according to the embodiment of the present invention, the heat storage material 160 accumulates and secures the heat of the heat medium oil 150, so that the heat of the heat exchanger 130 can be maintained for a long time Therefore, by minimizing the operation of the electric heater 140, the power consumption can be minimized.

In addition, the pressure tank 170 is installed in the heat exchanger 130 to prevent the generation of cracks or oil leakage due to the increase in pressure due to the heating of the thermal oil 150, as well as a relatively large amount of heat transfer oil 150 may be filled in the heat exchanger 130 to improve the thermal efficiency.

In addition, the safety valve 175 is provided to prevent the heat exchanger 130 from being damaged due to excessive pressure.

Further, the heating efficiency can be improved by rapidly heating the air using the heating medium oil 150 at a higher temperature than the conventional heating medium and discharging the heated air.

Further, the auxiliary heating line 180 is provided to perform the preheating or the postheating of the air, thereby improving the heat exchange efficiency.

In addition, the anti-scattering cover 190 is provided on the safety valve 175 to prevent the generation of an image due to the scattering of the thermal oil 150 and to prevent contamination of the external environment

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes and modifications to the scope of the invention.

100: electric fan 110: main casing
111: inlet 113: outlet
120: blower 130: heat exchanger
131: Lower tank 133: Upper tank
135: Heat storage unit 137: Deceleration plate
140: Electric heater 150: Heat medium oil
160: heat storage material 170: pressure tank
171: Pressure gauge 175: Safety valve
180: auxiliary heating line 181: selection valve
190: Shatterproof cover 191: Cap portion
193: Guide unit 195: Media storage unit

Claims (7)

A blower installed at an inlet or an outlet of the main body casing for forcibly sucking air into the suction port and discharging the air to the discharge port; A heat exchanger installed in the heat exchanger and electrically heated by the heat exchanger, a heating medium oil accommodated in the heat exchanger and heated by the electric heater, And a heat storage material accommodated in the heat exchanger and heated by the heating oil heated by the electric heater to accumulate heat, the electric heat fan comprising:
The heat exchanger includes a pressure tank for preventing breakage of the heat exchanger in accordance with an increase in pressure when the heat medium oil is heated,
And a safety valve installed in the heat exchanger and opening the heat exchanger to discharge pressure when the pressure of the heat exchanger by the heat medium oil exceeds a preset pressure,
The heat exchanger includes a lower tank installed with the electric heater and heating the thermal oil, an upper tank positioned above the lower tank and positioned so that the heating oil heated in the lower tank rises, and an upper tank disposed above the lower tank, And a heat accumulating portion which is disposed between the heat storage portion and the heat storage portion and is accommodated in the heat storage portion so that the heat storage oil heated by the electric heater rises to the upper tank and accumulates the heat storage material,
Wherein the heat storage unit includes a reduction diaphragm for reducing the movement speed of the heat medium oil so as to secure a time for the heat storage material accommodated in the heat storage unit to store heat of the heat medium oil,
A heating unit which is installed in a staggered manner at the inlet or outlet and is connected to the heat exchanger to preheat the air heated by the heating oil heated by the electric heater to be sucked into the suction port, Line,
And a scatter preventive cover installed on the safety valve to prevent an image due to scattering of the heat medium discharged from the safety valve when the safety valve is opened,
A controller for controlling the operation of the electric heater, and a medium temperature sensor for measuring the temperature of the heat medium oil,
The controller stops operation of the electric heater when the temperature of the heat medium oil measured by the medium temperature sensor exceeds a predetermined temperature to reduce power consumption, and operates the electric heater when the temperature of the heat medium oil is less than a preset temperature ,
And a selection valve that opens or closes the auxiliary heating line to selectively supply the thermal oil contained in the heat exchanger to the auxiliary heating line. delete delete delete delete delete The method according to claim 1,
The shatterproof cover
A cap portion for sealing a portion where the heat medium oil flows out from the safety valve,
A guide portion for guiding the heat medium oil scattered to the cap portion downward,
And a medium storage unit installed at an end of the guide unit for collecting and storing heat medium oil flowing through the guide unit.

Images