KR20020068015A - The Ondol system combined supplying hot water and cooking utility - Google Patents

Abstract

PURPOSE: A high efficiency heating and hot water supply system with a hypocaust and waste water heat and waste heat is provided to reduce the fuel consumption by reusing the waste water heat and waste heat in forming the hot water. CONSTITUTION: A high efficiency heating and hot water supply system with a hypocaust and waste water heat and waste heat is composed of a burner(10); a hot water heater(40) for heating the water; a waste water heat recovering unit(50) for using the waste water heat of the hot, cold and preheated water in a waste water heat reservoir; a waste heat recovering unit for collecting heat of fire discharged through a flue path; a system control apparatus(60) for controlling the burner(10), the flue path, the hot water heater, the waste heat recovering unit(50), connecting pipes, a shut-off valve(13), and a temperature measuring sensor; and a monitor(70) for allowing a user to control the system control apparatus and set the operation temperature as required.

Description

The Ondol system combined supplying hot water and cooking utility}

The present invention relates to a system that combines high-efficiency heating and hot water supply and cooking combined with ondol, wastewater heat and waste heat recovery device, and more specifically, it is suitably formed in modern residential spaces by applying ondol of ondol, which is a Korean heating system. Maximum heat efficiency to provide cooking to replace existing gas stoves when heating, hot water and especially gas are used as fuels and to reuse the waste heat generated from hot water and flue as preheating water through waste water heat recovery and waste heat recovery. It relates to a heating system that provides.

In general, the Ondol heating method, which is a heating device that heats the entire floor after the fire is fired at the fire, is closely related to the lifestyle of Korean people and is used in all private houses. Ondol's chaanan principle uses heat conduction, and it introduces fire into a wide stone underneath the floor and heats it with the heat emitted by the heated stone. I am also serving. Such ondol is a unique method of heating in Korea, which has the advantages of good heat efficiency, economical fuel and facilities, few breakdowns, and no frequent maintenance of the structure.However, the heating time is long and the temperature is controlled. There are also disadvantages such as this difficulty.

Therefore, in recent years, the ondol heating system using hot water has been invented, but it has not been able to take advantage of the basic advantages of ondol, and it has resulted in waste of fuel in energy efficiency and temperature in providing independent heating to each room. It is difficult to control, and the Utility Model Registration (20-0170479) proposes a dual heating system that combines the arching method and the boiler method, but this design is possible for the power house, but it is difficult to use for general apartment or housing supply. There were various problems such as narrow width.

In addition, boilers used in homes are heated and circulated at the same time inside the boiler by using hot water for circulation and hot water for external use at the same time. It is a waste of waste, it is inconvenient to use indoors due to the large volume of the boiler, and cooking of the boiler itself is impossible, so it is limited to only heating or hot water even if a lot of fuel is used. Despite this, there are various problems such as waste energy consumption that is discarded as it is and is inefficient.

The present invention has been made in view of the above problems, each room is formed with a variety of whale patterns suitable for the modern structure, there is a fire for heating, cooking and step-by-step combustion control is possible to reduce the number of operation of the burner By reducing the time to cool down the combustion passage during each operation, the energy consumption is minimized. The hot water is formed with a separate hot water heater so that only the water can be used for heating. Functions such as measuring sensor and shut-off valve can be input and controlled by the system control device to enable automatic use.The waste heat recovery machine can collect waste heat from the year and waste water heat from the waste water heat recovery machine and reuse it as preheating heat. The purpose is to provide thermal efficiency.

Hereinafter will be described in detail based on the accompanying drawings.

1 is a system flow diagram shown in the present invention

Figure 1a is a flow chart showing the path of the connecting pipe flowing fuel and combustion gas

Figure 1b is a flow diagram showing the flow of fuel and combustion gas and hot water flow

FIG. 1C is a flow chart illustrating a path through which fuel and combustion gas and cold water flow

2 is a cross-sectional view showing a conventional ondol structure

3 is a cross-sectional view showing the types of whales

4 is an exemplary view showing a monitor of the present invention.

<Description of Symbols for Major Parts of Drawings>

10: burner 11: each room 12: connector

13: shut-off valve 14: temperature measuring sensor 15: oven

15 ': Oven lid 20: Whale 30: Year

40: hot water heater 50: waste water heat recovery machine 50 ': waste heat recovery machine

60: system controller 70: monitor

The present invention relates to a system that provides heating and hot water supply and cooking that maximizes energy efficiency by using efficient hot water and significantly reducing fuel consumption by using ondol and burner 10.

In the heating and hot water supply system by the combination of the ondol and the burner (10), the fire is discharged while burning the fuel in the firewood, and the fire is delivered to the various rooms (11) formed of various bungalows (20) ondol, which enables stepwise combustion. Burner 10; A hot water heater 40 for using hot water for heating the water in the water tank; A wastewater heat recovery unit (50) for collecting and using the wastewater heat of the hot water, cold water, and preheated water in a wastewater hot water tank; Waste heat recovery unit (50 ') for collecting the fire that is discharged through the year 30 through the whale 20; Burner 10, flue 30, hot water heater 40, waste water heat recovery 50, waste heat recovery 50 'and the connecting pipe 12 for connecting each device, each of the rooms 11 and hot water A system control device 60 for inputting and controlling a shut-off valve 13 and a temperature measuring sensor 14 mounted on the inlet or outlet side of the heater 40; A monitor 70 which is displayed by the user controlling the system control device 60 externally and set to a desired operating temperature; Characterized in combination.

The connecting pipe 12 connecting the devices in the above is preferably formed of a ceramic material composed of a heat insulating material of a dual structure.

The burner 10 is composed of a burner or a multi-stage burner capable of stepwise combustion control and is characterized in that stepwise combustion control is possible.

In the above planar side of the firewood including the burner 10, a simple cooking stove 15 is mounted, the predetermined size formed of a heat insulating material that can block the perforated portion of the oven 15 when not using the oven 15 Fire lid 15 'is provided separately.

The shut-off valve 13 is mounted on one side of each room 11, hot water heater 40, waste water heat recovery 50, waste heat recovery 50 'and the like is operated under the control of the system control device 60.

In the above, the whale claw 20 type is the arrangement of the Taegeukmun style to evenly exchange heat to the spheres and the form of 1-ro, 2-ro, multi-ju, Daro (1), Daro (2), Daro (3). Can be.

The most commonly used type of waste heat recovery device (50 ') is a metal pipe as a heat transfer wall, and this type includes main water type, double tube type, multi-pin type tube type, tube type type, etc. There is this.

In the above, the positions of the year 30, the system control device 60, and the monitor 70 may be selectively different.

The position of the temperature measuring sensor 14 is mounted on one side of each room 11, flue 30, hot water heater 40, waste water heat recovery device 50, waste heat recovery device 50 ', etc. 60, which acts as an input element, and includes a burner 10, the shut-off valve 13 is one side of the hot water heater 40, each side 11, waste water heat recovery device 50, waste heat recovery device 50 'and the like. It is mounted on and operated by the system control device 60.

Briefly showing the connecting pipe 12 shown in Figure 1 of the present invention, Figure 1a shows the way of the fuel pipe and the flow of the combustion gas flow, Figure 1b shows the way the fuel and combustion gas and hot water flows In FIG. 1C, a flow path of fuel, combustion gas, and cold water is illustrated.

The present invention as described above has the advantages of having the ondol of the principle as shown in Figure 2, especially in urban life can feel the nostalgia of the power, especially the health of the elderly as well as a variety of characteristics such as a great help when there is a patient in the house and The advantages are already known. Burner 10 is made of the characteristics of the ondol as it is, and composed of a small volume of the suburbs, while supplying the heating to each room 11 at the same time can selectively use cooking, the width of time and space and physical use is widened. And the burner 10 with the burner 10 is equipped with a cooking oven 15 is available for convenient cooking when the general cooking, including food such as bear soup that should be applied to the temperature for a long time in the house, the burner When not in use, the oven lid 15 'of a predetermined size formed of a heat insulating material can be used to prevent the heat discharged.

In addition, the ondol bango 20 type shown in Figure 3 is possible to arrange the form of Taegeukmun style and 1-ro, 2-ro, multi-ju, Daro (1), Daro (2), Daro (3). In particular, the shape of the whale (20) of the Taeguk pattern is excellent in heat exchange power, so it can compensate for the shortcomings of the ondol by providing a balanced temperature in each room. Applicable to the room.

And the system controller 60 is equipped with a temperature measuring sensor 14 in each room 11 in consideration of the inconvenience of using the hot water independent of the temperature control of each room 11, which is one of the disadvantages of ondol, the actual automatic temperature Controllable, the hot water heater 40 can be conveniently used according to the desired temperature. Furthermore, the shut-off valve 13 installed in each device can selectively use each device, thus achieving energy consumption without sacrificing fuel consumption.

As each of the rooms 11 may be selectively varied in temperature, the discharged fire is controlled by the shutoff valve 13 to penetrate the water supplied through the waste heat recovery device 50 'through the hot water heater 40 to make hot water. Or it can be used for the purpose of generating preheated water and when not generating hot water may be discharged to the flue (30).

In addition, as shown in Figure 1, the waste water heat recovery device 50 is a kind of water used in the house is collected in the waste water collection tank and passed through the filter to generate preheated water through the waste water heat recovery device (50) or hot water heater It can be used to form the desired temperature by passing through the (40), and since the hot water heater 40 uses only the hot water to reduce the fuel without causing energy consumption to operate the entire boiler to use hot water, such as boilers You can do it.

And the system control device 60 is the operation of each temperature measuring sensor 14, shut-off valve 13, waste water heat recovery unit 50, waste heat recovery unit (50 '), step-by-step combustion control of the burner and hot water heater (40), etc. It is formed to enable the control of the overall system is expressed as a monitor 70 of the form as shown in Figure 4 can be used conveniently by the user. In addition, in FIG. 4, since it is shown as an Example, it is preferable that a device can be selectively used.

For example, in accordance with FIG. 1, the fuel may be delivered to each room through the connection pipe 12 when the fuel is introduced into the burner 10 and then heated for a predetermined time. At this time, the oven 15 on the top of the burner 10 can be used by placing a pot, such as a bear soup that requires a long cooking time, each room 11 is capable of controlling the desired temperature by the temperature measuring sensor 14 and each room 11 Firearms coming out along the whale 20 may be a hot water or pre-heated water penetrated through the waste heat recovery device (50 ') introduced into the hot water heater (40) and heated to a desired temperature.

In the present invention, the result of the embodiment of the fuel-saving example applied to the hot water generation as the test place by the waste water heat recovery machine is as follows.

Bath temperature (cold water): LT, preheat temperature after waste heat recovery: PT, bath temperature (BT), supply hot water temperature: TT, cold water ratio: a, hot water ratio: 1-a,

When taking a bath in the existing system, the user makes and uses a bath temperature BT, for example, 40 ° C, by controlling the quantity of hot and cold water valves of the final faucet. In this process, the hot water is supplied to the temperature of the hot water (TT) stored in the burner 10 via the wastewater heat recovery unit 50 and stored via the hot water heater 40, and the cold water is the temperature in the water tank ( Assuming that there was no heat loss in the middle of the supply, and using element-specific definitions, (cold water temperature × cold water ratio) + (hot water temperature × hot water ratio) = BT.

In summary, low temperature water ratio (a) = (TT-BT) / (TT-LT)-(1)

High temperature quantity ratio (1-a) = (BT-LT) / (TT-LT)-(2)

On the other hand, the calorific ratio recovered by the wastewater heat recovery unit 50 is Q∞ (1-a) × (PT-LT) because the product of the hot water quantity and the temperature difference before and after preheating at Q = m.c.d.T. In other words,

Wastewater Heat Recovery Machine (50) Calorie Ratio Qp∞ {(BT-LT) × (PT-LT)} / (TT-LT)-(3)

Therefore, the additional fuel cost of the burner 10 is Qb∞ (1-a) × (TT), which is a calorific ratio for raising the hot water (1-a) preheated with PT to the hot water temperature (TT) while passing through the wastewater heat recovery unit 50. -PT). In other words

Burner (10) Additional fuel quantity ratio Qb∞ {(BT-LT) × (TT-PT)} / (TT-LT)-(4)

In order to minimize the additional fuel amount ratio, the above equation (3) should be minimum, so the molecular value [(BT-LT) × (TT-PT)] should be minimum or the denominator value (TT-LT) should be maximum. In reality, the LT and BT values cannot be adjusted, so the (TT-PT) value should be minimized. Since the PT value is also limited by the wastewater heat recovery device 50, the TT can be minimized (but not less than the BT value). Therefore, the minimum of the TT is applied to the AI system controller 60 applying the actual experience value to the control device. This can be achieved by reducing the number of ignitions and increasing the heat transfer rate at the flame surface, which can lead to additional fuel savings.

The analysis of the fuel saving effect by the system controller 60 as described above is as follows.

The average temperature in the burner 10 combustion chamber is about 550 ° C. during operation and about 200 ° C. during operation standby. In the automatic position of the normal burner 10 itself there is an on / off actuating device of about 40 times / day. At this time, it is equivalent to cooling the combustion chamber for the remaining approximately 30 minutes with the damper deployed at least 30 seconds each time during each operation. Assuming that the amount of gas passing through the combustion chamber during operation and scavenging is the same, the combustion chamber temperature is maintained at 550 ° C during operation, so that burner combustion is more than about 10.9 {30 minutes × (200 ° C / 500 ° C)} minutes compared to 200 ° C. It can be seen as the same. According to related data observation, fuel consumption during operation of 40-500,000 Kcal / h burner is 0.9㎥ / min based on LNG, so it is 10.9 × 0.9 = 9.8㎥ / day and 245㎥ / month per month on 25th. In fact, the number of operation by the automatic control device is 4 times / day, which is less than 1/10, which can be said to have a fuel saving effect of more than 220㎥ / month.

The fuel saving effect by increasing the heat transfer rate on the heat transfer surface by maintaining the low temperature of the hot water heater 40 is that the flame at the average temperature on the heat transfer surface transfers heat toward the water, and the transfer rate is proportional to the flame and water temperature difference. Conventionally, by maintaining the outlet hot water temperature through the hot water heater 40 at about 90 ° C., about 57 ° C., the ratio of heat recovered from the heat transfer surface is Qt ∞ (90-57) / 550 at Q = m.c.d.T. That is 6% savings. Public baths that use an average of 7000㎥ have a fuel savings of 420㎥ / month. That is, the fuel saving induction effect by the system control device 60 is 660 m 3 / month (7920 m 3 / year), which is about 9.4% reduction for the annual average of 84,000 m 3.

In addition, by keeping the hot water temperature of the hot water heater 40 at 90 ° C. to about 57 ° C. (by increasing the quantity of water passing through the waste heat recovery device 50 ′), the additional fuel amount ratio Qb∞ {(BT-LT ) × (TT-PT)} / (TT-LT) ---- Qb90 ∞ {(40-15) × (90-30) )} / (90-15) = 20 and Qb57 ∞ {(40-15) × (57-30)} / (57-15) = 16.07, so the additional fuel savings ratio is (20-16.7) 20 = 16.5% .

Therefore, the fuel savings due to the reduced combustion recovery and the fuel savings by increasing the heat transfer rate on the heat transfer surface by maintaining the low temperature of the hot water heater (40) result in a reduction of 25.9% with the system controller (60) alone. Can be.

At this time, in order to utilize the wastewater heat recovery device 50 to the maximum (except for the cold water and the sun shower having a large cold water gravity ratio), if the preheated water passed through the cold water waste heat recovery device 50 'of the final faucet, the waste heat recovery device 50 Assuming that the performance of ') is sufficient, the final cold water piping is also LT → PT when using preheated water, and can be called (cold water temperature [preheated water] × cold water ratio) + (hot water temperature × hot water ratio) = BT. (PT × a) + {TT × (1-a)} = BT. In summary, the low temperature yield ratio (a) = (TT-BT) / (TT-PT), and the high temperature yield ratio (1-a) = (BT-PT) / (TT-PT) are recovered from the waste heat recovery unit (50 '). Since the calorific ratio of Q = mcdT almost passes through the wastewater heat recovery device (50), it is the product of the temperature difference before and after preheating, so it is Qp∞ (PT-LT) and the expression (5) / (4)

Additional fuel consumption ratio Qbr∞ (BT-PT) × (TT-LT) / {(BT-LT) × (TT-PT)}.

For example, LT = 8 ℃ and PT = 28 ℃ in winter, LT = 15 ℃, PT = 30 ℃, BT = 40 ℃ and TT = 70 ℃ in spring and autumn, Qbr = 55%.

In conclusion, there is an additional 45% savings.

The above experiment is based on the result of the bath in which a large amount of hot water is used, and the domestic hot water uses the preheated water and selectively uses the waste water heat recovery device 50 and the waste heat recovery device 50 '. You can derive the result.

Therefore, the present invention, while applying the advantages of the ondol can be selectively used only hot water, resulting in excellent effects in terms of fuel saving and energy efficiency.

As described above, the present invention is a burner that can control combustion in stages, and the temperature of each room is controllable, which has the characteristics of ondol. In particular, the Taegeuk pattern whale is very effective in maintaining the balanced temperature of each room, and the whole system of each device is controlled and displayed by the monitor, so that the user can use it easily, and the hot water heater, wastewater heat recovery machine and waste heat recovery machine By properly combining the wastewater and waste heat discharged to the wastewater collection tank and the year, it can be reused to form hot water, which can significantly reduce fuel consumption, maximize energy use efficiency, save resources, and reduce environmental pollution. There are many effects, such as prevention.

Claims (7)

In the heating and hot water supply system by the combination of the ondol and the burner (10), the fire is discharged while burning the fuel in the firewood, and the fire is delivered to the various rooms (11) formed of various bungalows (20) ondol, which enables stepwise combustion. Burner 10; A hot water heater 40 for heating hot water to use hot water; A wastewater heat recovery unit (50) for collecting and using the wastewater heat of the hot water, cold water, and preheated water in a wastewater hot water tank; Waste heat recovery unit (50 ') for collecting the fire that is discharged through the year 30 through the whale 20; The burner 10, the flue 30, hot water heater 40, waste water heat recovery 50, waste heat recovery 50 'and the connection pipe 12 for connecting each device, the hot water heater 40 And system control device 60 for inputting and controlling the shut-off valve 13 and the temperature measuring sensor 14 and the like mounted on one side of the inlet or outlet side of each room (11); A monitor 70 which is displayed by the user controlling the system control device 60 externally and set to a desired operating temperature; High efficiency heating and hot water supply system combining ondol, wastewater heat and waste heat recovery, characterized in that the combination. The high-efficiency heating and hot water supply system according to claim 1, wherein the connecting pipe (12) connecting the devices is formed of a ceramic material composed of a double-layered insulating material. The high-efficiency heating and hot water supply system of claim 1, comprising a burner or a multi-stage burner capable of controlling combustion step by step, and comprising a step-by-step combustion control. The fire extinguisher 15 of claim 1, wherein the fire extinguisher 15 having a burner 10 is equipped with a cooking stove 15, and the oven having a predetermined size formed of a heat insulating material that can block the perforated portion of the stove 15 when it is not used for cooking. High efficiency heating and hot water supply system combining ondol, wastewater heat and waste heat recovery, characterized in that the lid (15 ') is provided separately. The system of claim 1, wherein the shut-off valve 13 is mounted at one side of each room 11, flue 30, hot water heater 40, waste water heat recovery 50, waste heat recovery 50 ', and the like. High efficiency heating and hot water supply system combining ondol, wastewater heat and waste heat recovery, characterized in that operated by the control of (60). The method according to claim 1, wherein the whale claw (20) type is the arrangement of the taegukmun style to facilitate heat exchange, and the one-role, two-role, multi-share, multi-role (1), multi-role (2), multi-role (3) High efficiency heating and hot water supply system combining ondol, wastewater heat and waste heat recovery, characterized in that. 2. The high efficiency heating and hot water supply system according to claim 1, wherein the flue (30), the system control device (60), and the monitor (70) can be selectively positioned.