KR100411514B1 - Thermal energy storage system miniaturizing capacity of heater of heat-saving electic boiler - Google Patents

Abstract

The present invention is a switching heat storage device for a heat storage type midnight electric boiler and a late-night electric water heater to automatically control or switch the heating and heat storage action to reduce the capacity of the heater, the heat storage on the periphery of the heater built in the ordinary heat storage material tank Reheater is installed, and the heat storage material heating device has a lifting cover which automatically opens and closes when the internal filling water or the latent heat is overheated, and improves the connection structure between the circulation pipe, the heat storage tank and the heat storage material heating device, thereby providing rapid heating. As well as the use of hot water and hot water, it automatically switches and controls the heating and heat storage action according to the intermittent state of the midnight power supply and whether the heating is used, so that only a small amount of heater generates sufficient heat storage effect. Savings and more economical and easy to use.

Description

Conversion energy storage system miniaturizing heater capacity of regenerative electric boiler {Thermal energy storage system miniaturizing capacity of heater of heat-saving electic boiler}

The present invention relates to a regenerative heat storage device of a regenerative midnight electric boiler and a midnight electric water heater which automatically converts into a heating and regenerative action, thereby miniaturizing the heater capacity. In particular, the present invention relates to a peripheral electric heater and a heater applied to a midnight electric water heater. It is provided with a heat storage material of the heat storage material, the heat storage material heating device, while heating the heat storage tank rapidly heats the heat storage material inside the heating device as well as automatically discharges it to the heat storage material tank when the heated heat storage material is overheated, Not only can high temperature hot water required for heating and hot water use be rapidly obtained, but the heating and heat storage action is automatically controlled and switched according to the state of application of the late-night power source and whether the heating is used or not. Heat storage material that maximizes the efficiency of electric power use A regenerative electric boiler has a late-night.

Regenerative late-night electric boilers and midnight electric water heaters mainly use late-night electric power, and are electricity that is used only after midnight, which is a night time with low power consumption, from 10 pm to 8 pm, or from 11 pm to 9 pm the next day. It is a power demand management technology that maximizes the efficiency of power generation facilities that produce electricity while distributing the unbalanced power consumption and reducing the import of crude oil for heating by supplying surplus power at midnight hours at a low price. .

Therefore, a typical heat storage type midnight electric boiler is provided with a relatively large hot water tank 100 as shown in FIG. 8, and a plurality of electric heaters 101 and 101 ′ capable of heating hot water are embedded therein. The electric heaters 101 and 10 'are intensively operated at midnight electric power time zones to heat water or latent heat in the heat storage tank and heat the accumulated heat by using the discharge pipe 102 and the inflow pipe 103 during the day. Of course, it is possible to use energy at a low price using hot water.

However, when using the above-mentioned regenerative midnight electric boiler and midnight electric water heater during the day and want to use heating and hot water in the middle of the night when the heat storage tank is cooled, until the water or latent heat material of the heat storage tank becomes usable constant temperature There is a problem that is not heated or hot water is not supplied.

That is, one or more heaters need to be heated at 10 o'clock or 11 o'clock at night when the late-night time starts, and the entire heat storage tank needs to be heated so that heating and hot water can be used quickly. In addition to this, the investment cost of the distribution line of the power company that supplies power is not only excessive, but there is also a problem in the efficient use of power plant power.

Therefore, it is possible to enjoy better heating effect while distributing electric power load by continuous heating with small capacity heater, and it is possible to accumulate necessary heat for daytime heating, etc., but the existing technology reduces heating time and hot water supply time. In order to install a large-capacity heater, there are serious problems in the efficient operation of the power plant as well as the investment in the excessive production cost of heating machines and water heaters, and the excessive distribution facilities of the power supply companies.

The present invention has been made to eliminate the problems described above, and is equipped with a heat accumulator heating device on the periphery of the heater built in a normal heat storage material tank, the heat storage material heating device automatically in the event of overheating of the internal heat storage material. By forming a lifting cover that opens and closes, and improves the connection structure between the circulation pipe, the heat storage tank and the heat storage material heating device, not only rapid heating and hot water can be used, but also according to the intermittent state of the midnight power supply and whether the heating is used. By controlling and switching the heating and regenerative action, there is sufficient heat storage effect of thermal energy to be used during the day with only a small amount of heater, and a switching regenerative device that reduces the heater capacity of the regenerative electric boiler which is more economical by controlling the efficient fluid flow. It is an object of the present invention to provide.

1 is an internal cross-sectional view of the conversion regenerative type midnight electric boiler of the present invention.

Figure 2 is a perspective view of the heat storage material heating apparatus applied to the present invention the conversion regenerative late night electric boiler

Figure 3 is a cross-sectional view of the heat storage material heating device of the present invention the conversion regenerative late night electric boiler

Figure 4 is a flow chart of the midnight electricity application and heating state of the present invention conversion regenerative type midnight electric boiler

Figure 5 is a flow chart of the midnight electricity application and non-banging state of the conversion regenerative type midnight electric boiler of the present invention

Figure 6 is a flow chart of the midnight electric short circuit and daytime heating state of the invention conversion regenerative midnight electric boiler

7 is an automatic control circuit diagram of the switching regenerative type midnight electric boiler of the present invention.

Figure 8 is an internal cross-sectional view showing a conventional heat storage type midnight electric boiler.

Explanation of symbols on the main parts of the drawings

1: heat insulation layer 2: heat storage tank

3,3 ': heater 4: circulation tube

5,5 ': 3-way selector valve 6,6': Branch pipe

7,7 ': connector 8: circulation pump

9: refill water pipe

10: heat storage material heating device 11: pipe

12,12 ': Through hole 13: Cover plate

14,14 ': Hanging piece

Hereinafter, preferred embodiments of the present invention will be described.

1 is a cross-sectional view of the heat storage midnight electric boiler of the present invention, Figure 2 is a perspective view of a heat storage material heating device applied to the heat storage midnight electric boiler of the present invention, Figure 3 is a cross-sectional explanatory view of the heat storage material heating device described above.

In a heat storage boiler 2 in which a heat insulation layer 1 is formed, a heater 3, 3 ′ is mounted, and in a normal heat storage boiler in which a separate circulation pipe 4 is formed outside the heat storage tank 2. In this case, the capacity of the heat storage tank is the same as that of the existing conventional heat storage boiler capable of storing heat required during the day according to the law of energy conservation.

A separate heat storage material heating device 10 is mounted on the heater 3, and a circulation pump 8 is mounted on one side of the circulation pipe 4, and three-way switching is provided at both ends of the circulation pipe 4. Each of the valves 5 and 5 'is mounted so that they flow into the heat storage tank 2,

The heat storage material heating apparatus 10 includes a rectangular tube 11, a plurality of through holes 12 and 12 'formed on one side and both sides of the tube 11, and the upper and lower elevating holes 12. A bent cover plate 13 which opens and closes 12 'and a left and right locking pieces 14 and 14' which prevent the above-described cover plate 13 from being separated upward.

The three-way switching valves 5 and 5 'described above are formed at both ends of the circulation pipe 4, and are divided into an inlet-side three-way switching valve 5 and an outlet-side three-way switching valve 5'. Branch pipes 6, 6 'and connecting pipes 7 and 7', which are in communication with the inside of the retank 2, are respectively coupled, and the connecting pipes 7 and 7 'are three-way switching valves ( 5) (5 ') and the inside of the tube body 11 of the heat storage material heater 10 is connected to each other.

In the figure, reference numeral 9 is a supplemental water pipe.

Referring to the operation of the present invention by the above configuration in more detail by the accompanying drawings as follows.

As shown in FIG. 1, inside the ordinary heat storage material tank 2 in which the heat insulation layer 1 is formed, the supplemental water pipe 9 formed on the upper side of the heat storage material tank 2 is used for the heat storage material tank 2. What is necessary is to fill a heat storage material, such as a supplementary water or a latent heat material,

When power is supplied to the device, the heaters 3 and 3 'inside the heat storage material tank 2 in a state where the latent heat material is charged is heated.

Therefore, the filling water or the latent heat material located in the vicinity of the heaters 3 and 3 'is first heated by the heating of the heaters 3 and 3', and the filling water or the latent heat material in the heat storage material heating device 10 is Because it is sealed, it is heated at a higher speed.

Therefore, when the power source is applied to the heaters 3, 3 'from 10 pm or 11 pm, which is the time when the late-night power is supplied, the heat of the high temperature heat generated by the heaters 3, 3' is a limited amount. (10) By heating the filling water or latent heat material at high speed and high temperature, the filling water or latent heat material for heating and hot water use can be quickly obtained even with a small capacity heater.

That is, as shown in the perspective view showing the heat storage material heating apparatus of FIG. 2 and the cross-sectional explanatory view of FIG. 3, the heat storage material heating apparatus 10 is formed of the rectangular tube body 11, and the inside of the tube body 11 is formed. The heater 3 is positioned, and the filling water or the latent heat material in the tube 11 sealed by the heating of the heater 3 is rapidly heated because of its limited amount and relatively small amount.

Thus, the three-way switching valve (5) coupled to both ends of the circulation pipe (4) along the connection pipe (7) (7 ') by the operation of the circulation pump (8) for the filling water and the latent heat material in this heated state By using (5 ') to circulate through the circulation pipe (4), even with a small amount of heater, the hot water of hot water as well as the heating can be promptly used by the charged water and the latent heat heated at the same time as the boiler operation.

In addition, the plurality of through holes 12 and 12 ′ formed in the pipe body 11 described above and the cover plate 13 at the upper portion thereof are formed when the pressure inside the pipe body 11 increases due to overheating of the heater 3. (11) Due to the pressure difference with the outside, the filling water or the latent heat material inside the pipe 11 naturally exits the outside of the heat storage material tank 2 through the through holes 12 and 12 '. The cover plate 13 covering the through-holes 12 and 12 ′, which is electricly discharged during the discharge of the high-pressure filling water or the latent heat material 11, is lifted up.

On the contrary, when the pressure in the tubular body 11 does not form the pressure which pushes up the cover plate 13, the heater 3 is in the state which is not overheating.

Therefore, the aforementioned through holes 12, 12 'and the cover plate 13 transmit heat loss due to overheating by the heater 3 to the heat storage ash tank 2 so that there is no heat loss at the same time and overheating occurs. As soon as this is prevented from overheating by the low temperature filling water and the latent heat in the heat storage material tank (2) is to enable a relatively safe use while increasing the service life of the heater (3).

Therefore, the user is able to use the heating and hot water more quickly by the heat storage material heating device 10, this action is the time when the midnight power is supplied and the time when the regular power is supplied or whether the use of indoor heating and hot water According to the different operation, the flow of fluid and the operation relationship of each valve according to each situation will be described in more detail.

Figure 4 is a schematic diagram showing the flow of the three-way switching valve (5) (5 ') and the filling water and the latent heat material when using the heating or hot water in the state that the midnight power is applied,

When a relatively low-cost late night electricity is supplied and a plurality of heaters 3 and 3 'are heated, the upper heater 3' continuously heats the filling water and the latent heat in the heat storage tank 2, Another heater 3 is to heat the filling water and the latent heat material filled in the tube body 11 of the heat storage material heating device 10.

At this time, the inlet-side three-way switching valve (5) at the same time as the operation of the circulation pump (8) is operated to proceed the circulation direction of the filling water and latent heat material to the circulation pipe (4) and the connection pipe (7), the circulation pump (8) Through) and the filling water and the latent heat material is introduced into the tube body 11 of the connection pipe 7 and the heat storage material heating device (10).

Therefore, the filling water and the latent heat material inside the tubular body 11 are heated by the heater 3, and the filling water and the latent heat material inside the tubular body 11 is heated by the continuous operation of the circulation pump 8 at the same time as the heating. It is to flow to the other side of the circulation pipe (4) through the connecting pipe (7 ') and the discharge side three-way switching valve (5').

Therefore, when the heating water and hot water are used in the state where the late-night power is applied, the filling water and the latent heat material are to rapidly heat the limited filling water and the latent heat material inside the tubular body 11 by the heater 3. Filled water and latent heat material rapidly heated by the heater 3 continuously circulates through the interior of the circulation pipe 4, the connection pipe 7 and the pipe body 11, and another connection pipe 7 '. It is.

Therefore, when the heating and hot water is to be used during the late night time, the heating and hot water can be used more quickly by the rapid heating effect by the sealed tube 11, as well as by another heater 3 '. Since the inside of the retank (2) is continuously heated, it can be used during the day as a small heater because it continuously heats the filling water or the latent heat in the heat storage ash tank (2) while using heating and hot water of the desired temperature. To store enough heat energy.

In addition, when the heating and hot water are not used in the state where the midnight power is applied as shown in FIG. 5,

Since only the filling water and the latent heat in the heat storage material tank 2 need to be heated, the power is supplied to the plurality of heaters 3 and 3 'by the midnight electric in the state where the circulation pump 8 is stopped. (3) (3 ') generates heat and heats the surrounding water and the latent heat material.

Accordingly, the heater 3 ′ exposed to the inside of the heat storage material tank 2 continuously heats the filling water or the latent heat material inside the heat storage material tank 2, and the tubular body of the heat storage material heating device 10 ( 11) The heater 3 located inside heats the filling water and the latent heat material in the tube 11 first, and the pressure increases when the filling water and the latent heat material in the tube 11 is heated to a high temperature. By the through-holes 12, 12 'formed in the upper and side portions of the tube 11, the internally charged water and the latent heat of the high-pressure tube 11 are discharged to the outside. Alternatively, the cover plate 13 which opens and closes the through holes 12 and 12 ′, which have been electrically charged by the convection phenomenon of the latent heat material, automatically rises, and the high-pressure filling water and the latent heat material escape.

That is, when the pressure inside the tubular body 11 increases and exits to the outside, the cover plate 13 is raised by the pressure, and the pressure outside the tubular body 11 and the pressure inside the tubular body 11 are similar. In the lowered state, the cover 12 is lowered by its own weight, and the through-holes 12 and 12 'in the open state are closed.

In addition, in order to prevent the cover plate 13, which has been removed from the tube body 11, in the process of causing the cover plate 13 that has risen and the through holes 12 and 12 'of the tube body 11 to be opened. On the upper part of the tubular body 11 in which the cover plate 13 is located, a separate locking piece 14, 14 'is formed so that the cover plate 13 is raised to the locking piece 14, 14' even when the cover plate 13 is raised. By preventing it from rising anymore, opening and closing of the through holes 12 and 12 'is made freely, but the cover plate 13 is not deviated from the tubular body 11.

In this heated state, the charging water or latent heat material uses high-temperature heat energy accumulated in the middle of the night even when no power is applied during the daytime when no late-night electricity is supplied. Will be able to use hot water.

That is, when only the circulation pump 8 is operated in a state in which power is not supplied to the heaters 3 and 3 'as shown in FIG. 6, the three-way switching valves 5 and 5' are connected to the circulation pipe 4. And branch pipes 6 and 6 'in the heat storage tank 2 are connected to each other,

The filling water or latent heat in the heat storage material tank 2 heated to a high temperature at midnight time flows through the circulation pipe 4 which has been passed through the branch pipes 6 and 6 'by the operation of the circulation pump 8. will be.

Therefore, since the thermal energy stored in the late night time is used during the day time, there is no problem in the daytime heating and the use of hot water, but the power supply is a demand management technology for the use of the late night power supply, which reduces the maximum power demand at night. Economic burdens such as lower investment costs are greatly reduced.

Therefore, as described above, the position of the filling water and the latent heat material and the three-way switching valve which show different flows according to the time of power supply, the heating, and the use of hot water, are shown by the automatic control circuit diagram as shown in FIG. The circulation pump 8 and the three-way switching valves 5 and 5 'are organically operated.

Therefore, even though a relatively small amount of heater is used, heating and hot water can be instantaneously used by the user's needs, while in the late-night power time zone, only a relatively small amount of heater can be used for continuous heat storage. It is possible to short-time heating, hot water use and heat storage even if only a small capacity heater is installed, so that the overall size of the equipment can be reduced, and the production cost can be reduced and the service life can be extended by reducing the production cost. Power demand management technology.

The above-described switching heat storage device for miniaturizing the heater capacity of the heat storage electric boiler according to the present invention is not only possible to use heating and hot water at the same time as the application of electricity, but also a small amount of heater, so it is possible to accumulate the required amount by using the midnight power. More people can benefit from economical electric heating, and the efficiency of boiler is increased by automatically controlling and switching the heating and heat storage action according to the state of late-night power supply or the use of heating. The company can expect to save about 50% of its investment in power supply facilities.

Claims (1)

In a heat storage boiler 2 in which a heat insulation layer 1 is formed, a heater 3, 3 ′ is mounted, and in a normal heat storage boiler in which a separate circulation pipe 4 is formed outside the heat storage tank 2. In A separate heat storage material heating device 10 is mounted on the heater 3, and a circulation pump 8 is mounted on one side of the circulation pipe 4, and three-way switching is provided at both ends of the circulation pipe 4. Each of the valves 5 and 5 'is mounted so that they flow into the heat storage tank 2, The heat storage material heating apparatus 10 includes a rectangular tube 11, a plurality of through holes 12 and 12 'formed on one side and both sides of the tube 11, and the upper and lower elevating holes 12. A bent cover plate 13 which opens and closes 12 ', and left and right locking pieces 14 and 14' which prevent the first cover plate 13 from being separated upward. The three-way switching valves 5 and 5 'described above are formed at both ends of the circulation pipe 4, and are divided into an inlet-side three-way switching valve 5 and an outlet-side three-way switching valve 5'. Branch pipes 6, 6 'and connecting pipes 7 and 7', which are in communication with the inside of the retank 2, are respectively coupled, and the connecting pipes 7 and 7 'are three-way switching valves ( 5) (5 ') and the switching heat storage device for miniaturizing the heater capacity of the heat storage electric boiler characterized in that the inside of the pipe body (11) of the heat storage material heating device 10 is connected to each other.