KR20090076468A - An oil-electric boiler with different heating effect to time - Google Patents

Abstract

An oil and electricity boiler capable of hourly differential heating is provided to raise the temperature rapidly because a plurality of plane electric heaters and burners with high efficiency are interlocked. An oil and electricity boiler capable of hourly differential heating comprises a water tank(10), a burner(30), an electric heater(40), a circulation pipe, a controller, a first thermal sensor(60), and a second thermal sensor. The water is stored in the water tank, wherein an inlet port(22) and an outlet port(21) are formed. The burner is installed in one side of the water tank in order to heat up the water inside the water tank. A plurality of electric heaters are installed along the inner sidewall of the water tank. Two ends of the circulation pipe are respectively connected to the outlet port and inlet port and the circulation pipe is installed along the inner side wall of a vinyl house. A circulation pump is installed in the outlet port. The control unit controls the burner, electric heater, and the circulating pump and the timer unit is embedded therein.

Description

An oil-electric boiler with different heating effect to time}

The present invention relates to an agricultural boiler, and more particularly, a high-efficiency plate heater having a low power consumption and a large heat transfer area is installed together with an oil burner, which can drastically reduce electric charges and fuel costs, as well as the type and time of crops. The present invention relates to an oil and electric boiler capable of differential heating by time, capable of controlling temperature rapidly and precisely so that growth control is finely performed according to cycles.

In general, to maintain the crops irrespective of season through the vinyl house, the temperature inside the vinyl house is maintained at the ideal temperature for growing the crops by using various heating devices.

As a heating device for this purpose, an oil boiler equipped with a burner that generates heat by burning agricultural duty free oil or inexpensive bunker C oil is generally used. There was a burden on costs, and the rising fuel prices, especially on a daily basis, are increasing the burden of heating fuel costs.

To this end, an electric / oil combined boiler with an electric heater using a late-night electricity or agricultural electricity, which is relatively inexpensive than general supply electricity, was developed.

However, most electric heaters applied to commercial electric and oil boilers in the market are classical heating rods that use heating wires.The heating wires are wound on mica boards, or the heating wires that have been rolled into a certain shape are placed in quartz tubes. In the stainless steel pipe and maintain a certain distance between the heating wire and the stainless steel pipe and filled with a special material.The heating wire is in direct contact with air when it is heated. Has many problems, and there is a lot of inefficiency due to the inevitability of a special structure to support and fix the heating wire.

In addition, the nichrome wire is applied to most of the heating wires. In the case of the conventional electric / oil combined boiler, the power consumption required for heating the heating rod is very high, and the cost of using the high electric power still remains an economic burden. Due to the small area and low efficiency, it takes a very long time to increase the temperature, which makes it difficult to control the heating temperature quickly and accurately.

Types of crops, along with research results, show that the growth of crops, yield and quality of crops can be greatly influenced by the change of growth temperature according to the period of time (am, afternoon, night) or insolation in crop cultivation. The optimum temperature for crop growth is known, for example, over time or insolation.

This is commonly known as temperature management of facility crops, and is known through various data, including technical textbooks of income crops of the Rural Development Administration.

Yeongnam Agricultural Experiment Station Busan Horticulture Research Center says that when planting carnations, the temperature during the night is adjusted within the range of 4 ~ 13 ℃, the amount of fuel will be improved by 11%, and the amount of fuel will be improved by 11%, compared with the conventional cultivation of 13 ℃. Said.

Temperature control is managed at 13 ℃ from 6pm to 12pm, then lowered to 4 ℃ from 12pm to 6am, then heated up to 13 ℃ from 6pm to 8pm, and the temperature during the day is 20 ~ 25 Keep at ℃.

The Busan Horticultural Research Center planted Carnation <Degio> varieties at 15 × 20cm intervals in a mockup with a width of 80cm in early June and heated it from December to March the following year. The fuel consumption per (300 pyeong) was 10,705 liters, which is 30.6% lower than the 15,447 liters of conventional cultivation. In addition, the number of commodities per 10a was 199,560 acres, which was 10.8% higher than that of conventional cultivation.

In particular, the stem length was 70.5 cm, which is 1.5 cm longer than the practice, and 1.4 more than the 47.9 petals.

In addition, there is a study result that it is beneficial to manage the temperature according to the amount of insolation in addition to the time and attached Figure 1 shows an example of effective heating temperature management inside the plastic house according to the amount of insolation.

However, in the case of the conventional electric and oil combined boiler as mentioned above, due to the problem of low efficiency of the heating rod and long time to increase the temperature, there is a problem in applying to the optimal temperature control technique, which is more efficient. If you apply electric heater that can raise the temperature rapidly and can control it precisely, the temperature inside the cultivation facility with a large heating area can be grown quickly and precisely according to the hourly or insolation amount, so that the optimum temperature can be saved. This will make a big contribution to farm income.

The present invention was created in order to solve the above problems, and an object of the present invention is to organically interlock a plurality of plate-type electric heaters and burners having high efficiency and to quickly increase the temperature, and to control a plurality of plate-type electric heaters independently. It is to provide oil, electric combined boiler capable of differential heating by hour that can control the heating temperature finely over time.

In order to achieve the above object, the oil and electric boiler 100 capable of differential heating according to the present invention is an agricultural boiler for heating in a plastic house, in which water is stored and the inlet 22 and the outlet 21 ) Is formed water tank 10, the burner 30 is installed on one side of the water tank 10 to heat the water in the water tank 10, and the inner sidewall of the water tank 10 A plurality of electric heaters 40 are installed along one end, and one end is connected to the inlet port 22 and the other end is installed along the side wall of the inside of the vinyl house 200, and the outlet 21 A control unit 50 having a built-in timer and controlling the burner 30, the electric heater 40, the circulation pump 23, the circulation pipe 24 provided with the circulation pump 23, and the water tank (). 10) is installed in the water tank 10 to measure the temperature of the water and send it to the control unit 50 And a first temperature sensor 60 and a second temperature sensor 61 measuring the temperature inside the vinyl house 200 and sending it to the controller 50, wherein the electric heater 40 is a plate heater. Characterized in that, the control unit 50 is characterized in that it is configured to individually control the plurality of electric heaters 40 in conjunction with the timer unit.

In this case, the radiator 27 installed on the circulation pipe 24 passing through the inside of the plastic house 200 and the blower 28 attached to the outside of the radiator 27; 50 may be configured to control the blower 28.

Or separate from the circulation pipe 24, one end is connected to the outlet 21 and the other end is connected to the inlet 22, respectively, independent heating pipe 26 and the plastic house passing through the inside of the plastic house 200, Radiator 27 is installed on the independent heating pipe 26 in the interior and the blower 28 attached to the outside of the radiator 27; and the control unit 50 is configured to include It may be configured to control the blower 28.

The water tank 10 is preferably to have a capacity of 2 to 2.5 times the capacity of the circulation pipe 24, the plate heater 40 is a heating wire 41 of the stainless steel plate, the heating wire on the surface of the heating plate 41 After printing, the heating element 42 sintered at a high temperature is preferably Rudenox formed with an insulating layer 43 formed on the heating plate 41 on which the heating element 42 is formed.

By using the oil and electric combined boiler capable of differential heating according to the present invention as described above, it is possible to control the heating temperature quickly and precisely through a large number of plate heaters which can raise the temperature rapidly with high efficiency. It is easy to manage the temperature change according to time and insolation, which can greatly contribute to farm income by improving crops and reducing fuel costs.

Hereinafter, with reference to the accompanying drawings will be described in detail with the oil, electric boiler capable of differential heating according to the present invention as follows.

Figure 2 is a perspective view showing the appearance of the hourly differential heating of the oil, electric combined boiler of the present invention, Figure 3 is an exploded perspective view showing the interior of the hourly differential heating of the oil, electric combined boiler of the present invention, Figure 4 Arrangement schematically showing the heating system of the plastic house using the oil, electric boiler capable of differential heating according to the present invention, Figure 5 is a perspective view and a cross-sectional view showing a plate heater of the present invention.

Oil and electric boiler capable of differential heating according to the present invention has an appearance as shown in Figure 2 as an agricultural boiler for heating in the plastic house 200.

Water is stored therein and the inlet 22 and the outlet 21 which are penetrated from the outside are formed in the water tank 10 and the heat insulating material 11 to prevent heat from entering the water tank 10, and the outer case Body 12 is formed.

In order to heat the water in the water tank 10, a lower burner 30 is formed at one side of the water tank 10 to generate heat by burning oil, and a plurality of electric heaters are formed along the inner sidewall of the water tank 10. 40 is formed.

At this time, the electric heater 40 is a plate-type heater 40 as shown in Figure 5 which is different from the conventional heating rod using a nichrome wire, more preferably, a heating plate 41 of stainless steel, the heating wire on the surface of the heating plate 41 Is formed by a screen printing method and the insulating layer 43 is formed on the heating element 42 sintered at a high temperature, the electrode 44 formed at the end of the heating element 42, and the heating plate 41 on which the heating element 42 is formed. It will be a Rudenox heater.

The plate heater 40 is a semi-permanent life because there is no heat wire oxidation phenomenon and no corrosion at all in the electric heater using the conventional nichrome wire, and above all, the heat transfer path between the heating element and the heating plate is simple, and thus the instantaneous heating is possible. have.

In addition, it can be manufactured with a thickness of 0.3 ~ 2㎜ to maximize the use of space according to the installation of the side wall of the boiler, it is possible to control at a high response speed when adjusting the temperature, and very high thermal efficiency can be obtained, which requires fast and precise temperature control It can be said to be a characteristic component of the present invention.

In the case of the plate heater 40, the number of installations varies depending on the capacity of the water tank 10 determined by the area of the vinyl house 200 that requires heating. However, three to five burners 30 are suitable. Even if there is an abnormality, it is preferable to have a heat capacity that is enough to obtain a desired heating effect when operating all the plate heater 40 installed.

A circulation pipe 24 is connected to the outlet 21 and the inlet 22. One end of the circulation pipe 24 is connected to the outlet 21 and the other end is connected to the inlet 22, respectively. It is installed along the side wall of the inside 200 and the circulation pump 23 is installed toward the outlet 21 to effectively block the inflow of cold air from the outer wall of the vinyl house 200 through the circulation of the water temperature rises.

As the capacity of the water tank 10 increases, energy consumption required for temperature rise increases, so that the capacity of the water tank 10 is 2 to 2.5 times the capacity of the circulation pipe 24 for preventing unnecessary energy consumption and effective temperature management. It is optimal to have.

In addition, a control unit 50 having a built-in timer for controlling the burner 30, the electric heater 40, the circulation pump 23 by receiving power from the outside, and is installed in the water tank 10, the water tank 10, the first temperature sensor 60 measuring the temperature of the water in the water and sending it to the control unit 50, and the second temperature sensor 61 measuring the temperature of the inside of the vinyl house 200 and sending it to the control unit 50. Is composed.

The control unit 50 may be integrally installed on the outside of the boiler body 12, but may be installed separately from the boiler body 12 in a panel form, and using a magnetic switch connected to each plate heater 40. Each plate heater 40 to be controlled independently.

Through this, even when an abnormality occurs in the burner 30 or in one plate heater 40, the other plate heater 40 is operated to maintain a constant temperature inside the vinyl house 200 and burner 30. ) And each plate heater 40 to be organically operated to minimize the fuel cost and electricity consumption required for rapid temperature rise and temperature maintenance.

Other components, such as a water inlet for supplying water into the water tank 10, a conventional boiler, such as a safety valve that automatically opens when the pressure inside the water tank 10 is too high to lower the pressure inside the water tank. The description of the obvious components that are commonly installed in the art and can be known to those of ordinary skill in the art will be omitted.

The present invention is characterized in that the desired temperature can be set differently for each time zone by interlocking with a timer built in the controller 50 to achieve energy savings as well as excellent improvement of crops.

For example, in the RDA's technical manual, tomatoes are kept at 25-28 ℃ in the morning, 23-25 ℃ in the afternoon, and 12-13 ℃ for 4-5 hours after sunset, and then at 10 ℃ before sunrise. It is known that managing at ˜13 ° C. is an optimal temperature condition for photosynthesis and nutrient current. (Growth falls below 10 ° C, malformation occurs during long-term seedling below 7 ° C, and grows poorly and flowers fall off at temperatures above 30 ° C.)

Looking at the operation of the control unit 50, for example, the tomato grower is set so that the temperature inside the plastic house 200 is 25 ~ 28 ℃ during the morning and the control unit 50 through the plate heater 40 (Burner may be used, but burner is used at the time of temperature increase and it is preferable to use plate heater for maintaining the temperature.) Inside the vinyl house 200 is maintained at 25 ~ 28 ℃, afternoon plate heater Change the number of 40 and the operating cycle to drop the temperature to 23 ~ 25 ℃. During the 4 to 5 hours after sunset (usually 18 to 23 hours in winter), the temperature inside the vinyl house 200 is reduced to 12 to 13 ° C. The plate heater 40 is stopped and the circulation pump is turned off. The temperature will drop.

Thereafter, the inside of the plastic house 200 is maintained at 10 ° C., and the number of the plate heaters 40 is minimized to circulate the water to keep the temperature below 10 ° C.

Increase the number of plate heaters (40) operating before the sunrise (usually 4 to 6 winter season) to increase the temperature inside the plastic house 200 to 12 ~ 13 ℃ and then increase the temperature rapidly 25 ~ 28 ℃ during the morning Keep it.

In the case of plant crops such as flowers or vegetables of a specific kind other than the above-mentioned tomatoes, more detailed temperature control is required and temperature control must be finely adjusted according to the weather.

Due to the slow response speed and low efficiency of the electric boiler, the temperature control and the rapid temperature rise are practically difficult in heating a large space such as a vinyl house. In general, the present invention enables effective temperature control of crops with more detailed temperature control and rapid temperature increase by independently controlling a plurality of plate heaters 40.

The radiator 27 is installed on the circulation pipe 24 passing through the vinyl house 200 to control the temperature inside the vinyl house 200 more quickly, and the blower 28 is outside the radiator 27. It can be configured to control the blower 28 through the control unit 50 by attaching.

Alternatively, as shown in FIG. 4, an independent heating pipe having one end connected to the outlet 21 and the other end connected to the inlet 22 separately from the circulation pipe 24 and passing through the inside of the vinyl house 200, respectively. (26) to install a radiator (27) on the independent heating pipe (26) inside the plastic house 200, and attaching a blower (28) outside the radiator (27) the control unit (50) is the blower (28) can be configured to control.

Through this, it is possible to control the temperature in the vinyl house 200 more quickly, and evenly to the corner through the hot air even in a large space called the vinyl house 200. Preferably, it is effective to maximize the heating effect by installing the radiator 27 on which the blower 28 is installed on the side opposite to the entrance side of the vinyl house 200 (both ends in the longitudinal direction of the vinyl house).

The present invention can be applied to agricultural heating facilities that require long-term continuous heating can contribute to farm household income, as described above are those skilled in the art to which the present invention belongs does not change the technical spirit or essential features of the present invention. It can be implemented in other specific forms without.

1 is a graph showing an example of effective heating temperature management inside the plastic house according to the amount of insolation,

Figure 2 is a perspective view showing the external appearance of the oil, electric boiler capable of differential heating according to the present invention,

Figure 3 is an exploded perspective view showing the interior of the oil, electric boiler capable of differential heating according to the present invention,

4 is a layout view schematically showing a heating system of a plastic house using oil, an electric combined boiler capable of differential heating according to the present invention;

5 is a perspective view and a cross-sectional view showing a plate heater of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: boiler 10: water tank

11: insulation 12: body

21: outlet 22: inlet

23, 25: circulation pump 24: circulation pipe

26: independent heating piping 27: radiator

28: blower 30: burner

40: electric heater (plate type) 41: heating plate

42: heating element 43: insulating layer

44: electrode 50: control unit

60: first temperature sensor 61: second temperature sensor

200: vinyl house

Claims (5)

In an agricultural boiler for heating in a plastic house, A water tank in which water is stored and an inlet and an outlet are formed; A burner installed at one side of the water tank to heat the water in the water tank; A plurality of electric heaters installed along an inner sidewall of the water tank; A circulation pipe having one end connected to the outlet and the other end connected to the inlet, respectively, installed along a side wall of the inside of the plastic house, and having a circulation pump installed at the outlet; A control unit for controlling the burner, the electric heater, the circulation pump, and having a built-in timer; A first temperature sensor installed in the water tank and measuring the temperature of the water in the water tank and sending it to the controller; And a second temperature sensor for measuring the temperature inside the plastic house and sending it to the control unit. The electric heater is characterized in that the plate heater, The control unit is an oil, electric combined boiler capable of differential heating according to the hour, characterized in that configured to individually control a plurality of electric heaters in conjunction with the timer. The method of claim 1, A radiator installed on the circulation pipe passing through the inside of the plastic house; It is configured to further include; a blower attached to the outside of the radiator, The control unit is an oil, electric combined boiler capable of differential heating by the hour, characterized in that configured to control the blower. The method of claim 1, An independent heating pipe, one end of which is separated from the circulation pipe and the other end of which is connected to the inlet, respectively, and passes through the inside of the plastic house; A radiator installed on the independent heating pipe in the plastic house; It is configured to further include; a blower attached to the outside of the radiator, The control unit is an oil, electric combined boiler capable of differential heating by the hour, characterized in that configured to control the blower. The method of claim 1, The water tank is an oil, electric combined boiler capable of differential heating over time, characterized in that having a capacity of 2 to 2.5 times the capacity of the circulation pipe. The method of claim 1, The plate heater, Stainless steel heating plate, Heating element sintered at high temperature after printing the heating wire on the heating plate surface, The oil and electric boiler capable of differential heating according to claim 1, characterized in that the heating layer is formed on top of the heating plate is formed Rudenox (RUTHENOX).

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