KR100469474B1 - An electric boiler use a midnight elecricity - Google Patents

Abstract

According to the present invention, the hot water heat stored in the heat storage unit 6 is not directly transmitted to the heating pipe line 22, but the hot water is gradually supplied indirectly through the heat exchange unit 14, thereby causing rapid heat transfer. The purpose is to prevent heat loss and to improve the efficiency, and the other purpose is to keep the internal temperature of the heat exchanger 14 at a temperature of 40 ° C. to 50 ° C. at all times, so that the indoor space and the floor are always comfortable. As to the state, the structure is connected to the inlet (2) for the night power control unit for transmitting the operation command, and the night power control unit (4) while heating the water to save heat A heat storage unit 6 connected to the heat storage unit 6, a heat exchange unit 14 connected to the heat storage unit 6, and transferring heat of the heated hot material to the low temperature water, and a part of the heat exchange unit 14. Install Tabu Relates to electric boiler using midnight electric heating consisting of a pipeline (22).

Description

Midnight Electric Boiler {AN ELECTRIC BOILER USE A MIDNIGHT ELECRICITY}

The present invention relates to an electric boiler using a midnight electricity, and in particular, the high temperature water stored in the heat storage unit is not directly transmitted to the heating pipe line, so that the high temperature water is gradually supplied indirectly to the heat exchange unit, which may occur due to rapid heat transfer. To prevent heat loss, the efficiency is improved, and the temperature inside the heat exchanger is always maintained at 40 ° C to 50 ° C so that the indoor space and the floor can always be in a comfortable state. It is about.

In general, the late night time zone means the time zone from 22 pm every day to 08 am the next day.

As such, the separate night time zone is set at the Korea Electric Power Corporation (hereinafter referred to as "KEPCO"). The system is designed to make sure that fees and other supply conditions are wished to be reduced in the daytime and to increase the demand for nighttime.

The prior art is described in Korean Patent Publication No. 2000-60660 (Patent Application No. 1999-9170, name: Electric Boiler Using Midnight Electricity).

First, the main body is configured with a case having a heat insulator, and the upper and lower tanks for storing water are installed in the case, respectively, and the connecting pipes for allowing water to pass through the upper and lower tanks, respectively. do.

In addition, a lower portion of the lower tank is provided with a return port for guiding the low temperature water to flow through the pipe installed on the indoor floor, and an electric heater for heating the low temperature water.

In addition, the upper end of the upper tank is provided with a hot water supply port for guiding the heated water to move to the pipe installed on the indoor floor.

In addition, a control box is installed at one side of the case to adjust the electric heater to operate during a late night power time zone.

Referring to the operation of the prior art configured as described above is as follows.

First, when reaching the midnight power time zone, the control box supplies a current transmitted through the inlet to the electric heater, the electric heater heats the water stored in the lower tank to increase the temperature.

As described above, when the water stored in the lower tank is continuously heated, some heat is transferred to the water stored at a low temperature in the upper tank to increase the temperature.

In the above state, if the control box transmits an operation command to the circulation pump, the hot water stored in the upper and lower tanks moves to the pipe installed on the indoor floor through the hot water outlet and radiates heat to the outside to return to the lower tank. do.

At this time, the water returned to the low temperature state as the electric heater is continuously heated is circulated through the process as described above while being heated again.

The prior art has a structure in which the water heated by the electric heater is moved directly to the pipe installed on the indoor floor, the heat loss is large because the heat stored in the late-night power time flows unilaterally. There is a problem of low efficiency.

On the other hand, the heating method using a conventional conventional boiler also has a problem of low efficiency. In order to explain the efficiency of the conventional heating method, FIGS. 6 to 8 show graphs of temperature changes according to the conventional heating method. FIG. 6 is a heating method generally used in the related art. This is a graph showing the water temperature in the boiler when the heat is cut off continuously for a certain period of time. That is, it is a graph of temperature change according to a method of cutting off heat for a predetermined time (B) after supplying heat for a predetermined time (A). When the temperature is not constant as shown in the graph can be seen that the change is large. This is a common case when the energy management for the boiler is not performed at all, which is an inappropriate embodiment as a case where the energy loss is large.

FIG. 7 is a graph showing changes in temperature of water in a boiler and temperature of a room for heating according to a time for determining a method of determining the operation of boiler heating by sensing an indoor temperature. The time t1, t2, t3, and t4 is the time the water pump is operating, i.e. when it is determined whether the heating is based on the room temperature, not the water temperature in the boiler, when the temperature in the room is lower than the set temperature, the boiler The water pump is activated, and the water is excessively raised and stopped. According to this method, the temperature difference between the water temperature flowing through the indoor floor and the indoor space periodically increases over time, resulting in unnecessary water temperature rise. This results in heat loss. In other words, the circulation pump installed in the pipeline is controlled by a temperature sensor installed in the indoor wall, thereby reducing efficiency.

FIG. 8 is a graph showing the change of the floor surface temperature with time during heating operation as shown in FIG. 7. The times t5, t6 and t7 are the times when the water pump is running. Even after the boiler's water pump is operating and the room temperature rises, there is a time difference until the room temperature rises. Therefore, if the water pump is operated based on the temperature of the indoor space, the room temperature rises, When the operation is stopped, the surface temperature of the floor is lowered without maintaining the comfortable temperature required by the human body. As a result, if the heating is determined based on the indoor space in which the heating effect is the latest, the surface temperature of the floor is excessively higher or lower than the temperature required by the human body, and thus there is a problem in that the deviation becomes severe.

According to the present invention, the high temperature water stored in the heat storage unit is not directly transmitted to the heating pipe line, and the hot water is gradually supplied indirectly to the heat exchange unit, thereby preventing heat loss that may occur due to rapid heat transfer, thereby improving efficiency. Its purpose is to.

Another purpose is to measure the reference temperature of the heating in the boiler to maintain the internal temperature of the heat exchanger at 40 ° C. to 50 ° C. at all times, so that the indoor space and the floor are always in a comfortable state.

The present invention for realizing this, is connected to the inlet for the power control unit for transmitting the operation command, the heat storage unit for storing heat by heating the water while being connected to the control unit for the late night power, and the heat is connected to the heat storage unit It consists of a heat exchanger for transferring the heat of the high temperature of the hot water to the cold water, and a heating pipeline for installing the other part on the floor of the room while providing a part of the heat exchanger.

1 is a system diagram showing an embodiment of the present invention.

Figure 2 is a partially cut perspective view showing a heat exchange tank constituting the present invention.

3 is a flowchart when using late-night power.

4 is a flow chart when using constant power.

5 is a graph of water temperature flowing through the indoor floor according to the present invention.

6 is a graph when the conventional energy management is not performed.

7 is a graph when a temperature sensor is installed in a conventional indoor atmosphere.

8 is a graph when a temperature sensor is installed on a conventional indoor floor surface.

<Explanation of symbols for the main parts of the drawings>

2,48: entrance 4: night power control section 6: heat storage section

8, 16: Tank 10: Heater 12: Temperature sensor a

14 Heat exchanger 18 Pipe 20 Pump a

22: heating pipeline 24: heat collecting pipe 26: radiator

28: house 30: indoor floor 32: pump b

34: heater 36: temperature sensor b 38: temperature sensor c

40: power control unit 42: wall 44: temperature controller

46: display device

In the present invention, as shown in Figure 1 is configured an inlet (2) receiving power from the outside, the inlet (2) so that the power can be used only in the late-night time zone (22: 0 pm to 08:00 am) The midnight power control unit 4 is connected to the operation unit based on the transmitted information, and the heat storage unit 6 for maintaining the high temperature by heating the low temperature water on the output side of the night power control unit 4 is provided. Connected.

In this case, a hollow tank 8 filled with water in the heat storage unit 6 is configured, and a heater 10 for heating water in a low temperature state stored in the tank 8 and the tank 8 The temperature sensor a (12) is installed to check the internal water temperature and transmits information, and the information transmitted to the heater (10) and the temperature sensor a (12) so that the heat storage unit (6) can properly exhibit the efficiency. The midnight power control unit 4 for transmitting the operation command based on the connection.

Subsequently, at the outlet side of the heat storage unit 6, a heat exchange unit 14 for transferring heat of high temperature water to low temperature water is connected, and the heat exchange unit 14 is configured with a tank 16 configured to store water, and the tank 16, pipes 18 for guiding water flow to the tanks 8 constituting the heat storage unit 6 are respectively connected to upper and lower parts thereof. 18, a pump a 20 for forcibly transferring water from the heat storage unit 6 to the heat exchange unit 14 is provided.

In addition, the heat exchange unit 14, the tank 16 is provided with a portion of the heating pipe line 22 is heated by receiving the high-temperature water heat.

One side of the heating pipe line 22 is a heat collecting pipe 24 which is heated by receiving heat from the outside and is located inside the tank 16, and the other side of the heating pipe line 22 radiates heat to the outside. The radiator 26 is configured and installed on the indoor floor 30 constituting the house 28. At this time, the heating pipe line 22 is provided with a pump b 32 for forcibly circulating water.

On the other hand, the tank 16 constituting the heat exchange part 14 has a heater 34 for heating water, a temperature sensor b36 for checking the water temperature flowing through the collecting pipe 24, and the tank ( 16) Temperature sensors c (38) for checking the internal water temperature are respectively installed.

And the heater 34, the temperature sensor b, c (36, 38) is connected to the constant power control unit 40 for receiving information and at the same time operating command, the constant power control unit 40 is Pumps a and b 20 and 32 are connected respectively.

In addition, the constant power control unit 40 is installed on the wall 42 constituting the house 28, the temperature controller 44 to allow the user to arbitrarily adjust the temperature inside the heat exchange unit 14, and The display devices 46 installed on the wall 42 to display the temperature inside the heat exchange unit 14 are connected to each other. At this time, the display device 46 may be provided with a thermometer for measuring the room temperature as needed, and the temperature controller 44 may be provided with a device for displaying an error display when out of the set temperature range.

The continuous power control unit 40 configured as described above is connected to the inlet port 48 so that the electric power can be supplied from the outside in the daytime as well as the midnight power.

Referring to Figure 3 illustrates the operation of the present invention configured as described above.

First, the heat storage unit 6 stores water heated to 90 ° C. (if it is within the range of 80 ° C. to 100 ° C.) so that the heating pipe 22 can always be supplied with water heated to 40 ° C. to 50 ° C. In this case, the heating cost is reduced by mainly using the late-night time zone that can use cheap power to heat the water stored in the heat storage unit (6).

Referring to the operation sequence to ensure that the water stored in the heat storage unit 6 is always heated to a constant temperature as described above.

First, the late night power control unit 4 determines whether the current time is 22 pm, which is the late night power time zone, based on the information provided through a timer (not shown).

When it is determined that the current time is 22 pm, which is a midnight electric power time zone after S1, the tank 8 constituting the heat storage unit 6 by supplying a current provided through the inlet 2 to the heater 10. The water stored in the low temperature state inside is heated to a high temperature state (S2).

At this time, if it is determined that the late night power time starting time is not after 22 pm, the late night power control unit 4 blocks the current flow so that the current provided from the inlet 2 is not supplied to the heater 10. Let it stay

After S2, the late night power control unit 4 determines whether or not the current temperature of the water stored in the tank 8 due to the heat of the heater 10 is 90 ° C. or more, which is a set temperature. (S3)

If it is determined that the current water temperature is greater than or equal to the set temperature of 90 ° C. after S3, the late night power control unit 4 blocks the current flow transmitted through the inlet 2 to be turned off.

When the water stored in the tank 8 elapses for a predetermined time while the heater 10 is turned off as described above, the water temperature naturally decreases.

If it is determined that the water temperature stored in the heat storage unit 6 after S3 is not equal to or higher than the set temperature of 90 ° C, the late night power control unit 4 causes the heater 10 to continue to be heated.

After S4, the late night power control unit 4 determines whether the water temperature stored in the heat storage unit 6 is equal to or higher than the set temperature of 85 ° C. (S5)

If the current water temperature is not higher than the set temperature of 85 ° C. or more after S5, the heater 10 is continuously heated to increase the water temperature.

After S5, it is determined whether the current midnight power end time is reached at 08:00 am (S6).

After S6, when it is determined that the midnight power control unit 4 is 08 AM, the heating operation is terminated by blocking the current flow transmitted through the inlet 2.

If it is determined that the current time since the step S6 is not 08 AM, the heater 10 installed in the heat storage unit 6 is simply turned off.

Meanwhile, referring to FIG. 4, the operating relationship of the water temperature flowing through the heating pipe line 22 to always maintain 40 ° C. to 50 ° C., which is the temperature most suitable for the human body, is as follows.

First, when the power is turned on, the constant power control unit 40 transmits an off command to the pump a 20 to block hot water from moving from the heat storage unit 6, and at the same time, an operation command to the pump b 32. The water is circulated through the heating pipe line 22 by transmitting the pressure. Then, the current water temperature of the heat collecting pipe 24 provided from the temperature sensor b 36 is checked and the temperature is displayed on the display device 46 (S10).

Since the step S10, the constant power control unit 40 determines whether the temperature of the heat collecting pipe 24 is lower than the temperature set by the temperature controller 44 installed on the wall 42 of the house 28 (S11).

If it is determined that the water temperature in the heat collecting pipe 24 is not lower than the temperature set by the temperature controller 44 after the step S11, as described above, the pump a 20 is turned off and the pump b 32 is operated. .

If it is determined that the water temperature in the heat collecting pipe 24 is lower than the temperature set by the temperature controller 44 after S11, the continuous power control unit 40 is applied to the temperature set by the temperature controller 44 is 50 ° C or less. Determine again. (S12)

If the set temperature of the temperature controller 44 is not 50 ° C. or lower after S12, an error indication is given to the temperature controller 44. (S13)

When the set temperature of the temperature controller 44 is 50 ° C. or lower after S12, the constant power control unit 40 transmits an operation command to the pump a 20.

Accordingly, while the pump a 20 operates, the hot water stored in the tank 8 of the heat storage unit 6 is introduced into the heat exchange unit 14 tank 16. At this time, the low temperature water stayed in the heat exchange unit 14 tank 16 moves along the pipe 18 and moves to the heat storage unit 6 tank 8.

As described above, the low temperature water introduced into the heat storage unit 6 tank 8 is in a high temperature state due to the heat provided from the heater 10 installed in the heat storage unit 6 tank 8 when the night time power use time is used. In addition, the pump a 20 is introduced again into the heat exchange part 14 tank 16.

Unlike the above, when it is not the night time power use time, the heater 10 installed in the heat storage unit 6 tank 8 is turned off, so that the hot water stored in the heat storage unit 6 tank 8 continues. By moving to the heat exchange unit 14 tank 16 and circulating, the temperature is gradually decreased.

In the state where an error is displayed on the temperature controller 44 after the step S13, the constant power control unit 40 causes the pump a 20 to be turned off and the pump b 32 to be continuously operated as described above.

Since S14, the power control unit 40 receives the water temperature stored in the heat exchange unit 14 and the tank 16 from the temperature sensor c 38, and determines whether the current temperature is 50 ° C. or less. (S15)

If it is determined that the water temperature is not lower than the set temperature of 50 ° C. or after S15, the pump b 32 is operated while the pump a 20 is turned off as described above, and the heat collecting pipe 24 is connected to the display device 46. Have the water temperature displayed.

When the water temperature is determined to be 50 ° C. or less after S15, the constant power control unit 40 transmits an off command to the pump a 20.

Accordingly, when the pump a 20 is turned off, the water stored in the heat storage unit 6 tank 8 is stopped, and the water in the heat exchange unit 14 tank 16 remains at the current temperature. Subsequently, heat is transferred to the heat collecting pipe 24 and the temperature gradually decreases.

In this case, if the pump a 20 is continuously turned off, it may be determined that the time zone is out of the current night time power zone.

Since S16, the power control unit 40 determines again whether or not the water temperature of the heat exchanger 14 is equal to or lower than 50 ° C, which is the current set temperature.

If the water temperature is determined to be 50 ° C. or lower after S17, the heat exchanger 14 and the heater 34 are heated.

When the heater 34 is heated as described above, while the water in the tank 16 is heated, the temperature is increased by transferring heat to the low temperature water flowing through the heat collecting pipe 24. Therefore, the water forcedly circulated by the pump b 32 raises the temperature of the indoor floor 30 through the radiator 26.

As a result, the temperature of the house 28 is increased by the heat transmitted through the radiator 26. At this time, the temperature change of the room and the temperature of the water passing through the heat collecting pipe 24 are as shown in the graph shown in FIG. Stays constant.

After the above step S18, the process moves back to the aforementioned step S17.

On the other hand, if the water temperature is not 50 ° C or less after the step S17, the heat exchanger 14, the heater 34 is turned off. (S19)

As described above, when the heater 34 is turned off, the water temperature of the tank 16 of the heat exchange unit 14 is maintained at 50 ° C., and the water has the same heat as the low temperature water passing through the heat collecting pipe 24. Will be delivered.

After step S19, the process moves back to the above-described S16.

As described above, the present invention heats the water stored in the heat storage unit 6 tank 8 while the midnight power control unit 4 operates from 22 pm to 08 am, and the constant power control unit 40 for 24 hours a day. ), While using the hot water stored in the heat storage unit (6) tank (8) while heating the heater 34 installed in the heat exchange unit (14) tank 16, if necessary, to partially heat the stored water It is intended to be used.

Although the water temperature stored in the heat storage unit 6 installed as described above is usually set to 90 ° C., it can be arbitrarily set and used in the midnight power control unit 4 within an arbitrary temperature range as necessary.

In addition, although the temperature of the water flowing in the heating pipe line 22, which is partially installed on the indoor floor 30 and the heat exchange part 14, is set within a range of 40 ° C to 50 ° C, depending on the user environment, 40 ° C to 50 ° C. The temperature outside the range can be arbitrarily set in the power control unit 40 for use.

The present invention has a structure in which the high temperature water stored in the heat storage unit is not directly transmitted to the heating pipe line, but gradually supplies the high temperature water indirectly to the heat exchange unit, thereby preventing heat loss that may occur due to rapid heat transfer. The efficiency is further improved.

Another effect is that the internal temperature of the heat exchanger can be maintained at 40 ° C. to 50 ° C. at all times, so that the temperature difference between the indoor space and the indoor floor is not large and always comfortable.

Claims (16)

And a midnight power control unit 4 connected to the inlet port 2 to transmit an operation command, A heat storage unit 6 connected to the late night power control unit 4 and storing heat by heating water; A heat exchanger 14 connected to the heat storage unit 6 and transferring heat of the heated high temperature material to the low temperature water; It is composed of a heating pipe line 22 for installing the other part on the indoor floor 30 while installing a part in the heat exchange unit 14, The heat storage unit 6 is a tank (8) made of a hollow type, the heater 10 is installed in the tank (8) and connected to the night power control unit (4), and in the tank (8) Is installed consists of a temperature sensor a (12) connected to the night power control unit 4, The heat exchange part 14 is a hollow tank 16 connected to the heat storage part 6 by a pipe 18, and a heat collecting pipe 24 of a heating pipe line 22 installed inside the tank 16. Electric boiler using a late night electricity, characterized in that consisting of. delete The method of claim 1, The midnight electric power control unit 4 is an electric boiler using midnight electricity, characterized in that the heater 10 is heated until the water temperature reaches the set temperature. delete The method of claim 1, An electric boiler using midnight electricity, characterized in that the pump a (20) is installed between the heat storage unit (6) and the heat exchange unit (14). The method of claim 5, wherein Electric boiler using a late-night electricity, characterized in that the pump b (32) is installed in the heating pipe line (22). The method of claim 6, Electric boiler using a midnight electricity, characterized in that the constant power control unit 40 is connected to the pump a, b (20, 32). The method of claim 7, wherein The electric boiler using a midnight electricity, characterized in that attached to the heating pipe line 22 is installed in the heat exchange unit 14 while the temperature sensor b (36) is connected to the control unit (40). The method of claim 7, wherein The electric boiler using a midnight electricity, characterized in that installed in the heat exchange unit 14 while the temperature sensor c (38) is connected to the control unit (40). The method of claim 7, wherein An electric boiler using midnight electricity, characterized in that the heater 34 is installed in the heat exchange unit 14 while the heater 34 is connected to the power control unit 40. The method of claim 7, wherein Electric boiler using a midnight electricity, characterized in that the thermostat 44 is connected to the control unit for the constant power (40). The method of claim 8, The electric boiler using a midnight electricity, characterized in that the display device 46 is connected to the constant power control unit 40. The method according to any one of claims 7 to 12, The power control unit 40 operates the pump b 32 when the power is turned on, and simultaneously displays the water temperature inside the heat collecting pipe 24 transferred from the temperature sensor b 36 to the display device 46. Electric boiler using midnight electricity characterized by the display. The method according to any one of claims 7 to 12, The constant power control unit 40 causes the pump a 20 to operate when the water temperature inside the heat collecting pipe 24 is lower than the temperature set by the temperature controller 44, and the water temperature inside the heat collecting pipe 24 is a temperature. Electric boiler using a late-night electricity, characterized in that the pump a (20) is turned off when the temperature higher than the temperature set by the regulator (44). The method of claim 14, The constant-power control unit 40 is a midnight electricity, characterized in that the pump a (20) is operated when the temperature controller 44 is below the set temperature, and an error display when the temperature controller 44 is above the set temperature. Electric boiler using. The method of claim 9, The constant power control unit 40 causes the heater 34 to be heated when the water temperature inside the heat exchange unit 14 provided from the temperature sensor c 38 is lower than the set temperature, and the water temperature inside the heat exchange unit 14 is set. Electric boiler using a late-night electricity, characterized in that the heater 34 is turned off when the temperature is above.