Automatic control heating furnace using ethanol as fuel for seedling raising greenhouse

Abstract

The utility model relates to the technical field of seedling growing greenhouses, and discloses an automatic control heating furnace using ethanol as fuel for a seedling growing greenhouse, which comprises a heat exchange box body, an ethanol burner, a fan, a coil pipe and a temperature controller, the coil pipe is fixedly arranged in a cavity of the heat exchange box body, one end of the coil pipe is connected with the ethanol burner, and the other end of the coil pipe is connected with the fan. And an outlet is formed in the upper part of the heat exchange box body. According to the automatic control heating furnace with the ethanol as the fuel for the seedling raising greenhouse, the temperature controller closes the ethanol combustor and the electromagnetic valve and stops heating, automatic control over temperature adjustment in the greenhouse is achieved in cycles, the ethanol is stored in the tank and connected with the ethanol combustor through the pipeline, the heating furnace recovers to supply heat to the greenhouse to increase the temperature, and the heating efficiency is improved. And the temperature in the greenhouse is kept in a set range, so that the temperature in the greenhouse is kept in a proper temperature range required by seed germination, and management operators for making fire and adding coal are omitted.

Description

Technical Field

[0001] The utility model relates to the technical field of seedling greenhouses, in particular to an automatic control heating furnace using ethanol as fuel in a seedling greenhouse. Background Art

[0002] At present, agricultural planting models are constantly becoming more scientific. In order to avoid adverse climates such as early spring cold snaps and extend the growing period of crops, many large-scale vegetable, medicinal materials, and seedling plants are increasingly adopting greenhouse seedling cultivation and field transplanting models. The seedlings emerge early and at the same time, ensuring timely and high-quality transplanting in the future. The seedling greenhouse starts seedling cultivation in the late winter when the spring is approaching. At that time, the temperature outside the greenhouse is still very low. The heating device must be used in the greenhouse to increase the temperature in the greenhouse to the temperature for seed germination to ensure the smooth germination of the seeds. The existing technology uses coal-fired furnaces for heating.

[0003] However, the following problems still exist in the actual operation process: the coal-fired furnace heating method is not only labor-intensive, but also has large temperature fluctuations in the greenhouse that affect seedling emergence. More importantly, this form of heating is seriously polluting and will produce a large amount of flue gas exhaust, containing a large amount of harmful gases such as carbon dioxide, sulfur dioxide, nitrogen sulfide, etc., and also produce a large amount of coal slag that affects the surrounding environment of the greenhouse. At the same time, although the electric heating method is pollution-free and easy to operate, it also has two insurmountable difficulties. First, most transmission lines cannot withstand the increased load, and the carrying capacity of power supply lines and equipment needs to be increased, which requires a large amount of funds; second, the cost of electric heating is very high, which farmers cannot afford. For this reason, the utility model provides an automatically controlled heating furnace using ethanol as fuel in a seedling greenhouse. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an automatically controlled heating furnace using ethanol as fuel for a seedling greenhouse. The utility model has the advantages of low cost, good effect and easy operation of a hot air heating furnace using ethanol as fuel, and solves the problems raised in the background technology.

[0005] The utility model provides the following technical solution: an automatically controlled heating furnace for a seedling greenhouse using ethanol as fuel, comprising a heat exchange box, an ethanol burner, a fan, a coil and a temperature controller, a coil is fixedly installed inside the cavity of the heat exchange box, one end of the coil is connected to the ethanol burner, an outlet is arranged on the upper part of the heat exchange box, and an upper opening is arranged on the top of the heat exchange box.

[0006] Preferably, a mounting groove is provided on the side of the heat exchange box, and a fan is fixedly installed inside the mounting groove.

[0007] Preferably, the ethanol burner is electrically connected to a temperature controller, and the temperature controller is electrically connected to a solenoid valve.

[0008] Preferably, the temperature controller is electrically connected to a detection head, and a support plate is provided on the surface of the coil.

[0009] Preferably, a connecting pipe is fixedly installed on the side of the ethanol burner, and a solenoid valve is provided on the other side of the connecting pipe. A pipeline is fixedly installed on the side of the solenoid valve, and a tank is fixedly connected to the other end of the pipeline.

[0010] Preferably, the upper port is connected to a coil, and the coil is connected to an outlet.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The seedling greenhouse uses an automatically controlled heating furnace that uses ethanol as fuel. In this scheme, a coil is installed in the heat exchange box. An ethanol burner is installed at the lower left corner of the heat exchange box. The flame jet port of the ethanol burner is connected to the lower port of the coil. When the burner is ignited, the burning ethanol flame is sprayed into the coil, the coil is heated, and the hot gas flows along the coil and is finally discharged from the upper port. A fan is installed at the lower left corner of the heat exchange box to transport air into the heat exchange box. The air flows through the gap between the heat exchange box and the heating coil and flows out from the upper hot air outlet. The air sent in by the fan contacts the coil during the flow and is heated. The temperature of the air coming out of the outlet has increased and is input into the air supply pipe in the greenhouse. The air in the greenhouse is heated from the set outlet. The ethanol burner is controlled by a temperature controller. When the temperature probe detects that the temperature in the greenhouse is lower than the set lower temperature limit, the temperature controller starts the ethanol burner and opens the solenoid valve, heating the coil and then heating the air to increase the temperature in the greenhouse. When the probe detects that the temperature reaches the set upper temperature limit, the temperature controller turns off the ethanol burner and the solenoid valve and stops heating. This cycle is repeated to achieve automatic control of the temperature regulation in the greenhouse. Ethanol is stored in a tank and connected to the ethanol burner through a pipeline. The heating furnace resumes supplying heat to the greenhouse to increase the temperature, so that the temperature in the greenhouse is maintained within the set range, thereby ensuring that the temperature in the greenhouse is maintained within the appropriate temperature range required for seed germination, eliminating the need for management and operation personnel to make fires and add coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall structural diagram of the ethanol heating furnace;

[0014] Figure 2 This is the installation diagram of the heat exchange box and heating coil.

[0015] In the figure: 1. heat exchange box; 2. ethanol burner; 3. fan; 4. coil; 5. temperature controller; 6. solenoid valve; 7. upper port; 8. outlet; 9. pipeline; 10. tank; 11. support plate; 12. detection head. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-2 An automatically controlled heating furnace for a seedling greenhouse using ethanol as fuel comprises a heat exchange box 1, an ethanol burner 2, a fan 3, a coil 4 and a temperature controller 5. The coil 4 is fixedly installed inside the cavity of the heat exchange box 1. The appearance design of the hot air furnace gets rid of the concept of a traditional circular furnace body. The heat exchange box 1 is designed to be in a rectangular shape, which is convenient for placement in a greenhouse. The outer shell is made of welded steel plates. A coil 4 made of a thick steel pipe is arranged in the shell. One end of the coil 4 is connected to the ethanol burner 2. An outlet 8 is arranged on the upper part of the heat exchange box 1, and an upper opening 7 is arranged on the top of the heat exchange box 1.

[0018] A mounting groove is provided on the side of the heat exchange box body 1, and a fan 3 is fixedly installed inside the mounting groove.

[0019] Among them, the ethanol burner 2 is electrically connected to the temperature controller 5, and the temperature controller 5 is electrically connected to the solenoid valve 6. The start and stop of the ethanol burner 2 during operation are controlled by the temperature controller 5. The temperature detection head 12 arranged in the greenhouse transmits the detected signal to the temperature controller 5. When the detected temperature is lower than the lower limit of the set temperature, the temperature controller 5 starts the ethanol burner 2 and opens the solenoid valve 6 for heating. When the detected temperature reaches or exceeds the upper limit of the set temperature, the temperature controller 5 turns off the ethanol burner 2 and closes the solenoid valve 6 to stop heating, thereby realizing automatic control.

[0020] The temperature controller 5 is electrically connected to a detection head 12 , and a support plate 11 is disposed on the surface of the coil 4 .

[0021] A connecting pipe is fixedly installed on the side of the ethanol burner 2, and a solenoid valve 6 is arranged on the other side of the connecting pipe. A pipeline 9 is fixedly installed on the side of the solenoid valve 6, and a tank 10 is fixedly connected to the other end of the pipeline 9.

[0022] The upper port 7 is connected to the coil 4 , and the coil 4 is connected to the outlet 8 .

[0023] Working principle: a coil 4 is installed in the heat exchange box 1, and an ethanol burner 2 is installed at the lower left corner of the heat exchange box 1. The flame injection port of the ethanol burner 2 is connected with the lower port of the coil 4. When the burner is ignited, the burning ethanol flame is injected into the coil 4, the coil 4 is heated, and the hot gas flows along the coil 4 and is finally discharged from the upper port 7. A fan 3 is installed at the lower left corner of the heat exchange box 1 to transport air into the heat exchange box 1. The air flows through the gap between the heat exchange box 1 and the heating coil 4 and flows out from the upper hot air outlet 8. The air sent in by the fan 3 contacts with the coil 4 during the flow and is heated. The temperature of the air coming out of the outlet 8 has risen. High, is input into the air supply pipe in the greenhouse, and comes out from the set outlet 8 to heat the air in the greenhouse. The ethanol burner 2 is controlled by a temperature controller 5. When the temperature detection head 12 detects that the temperature in the greenhouse is lower than the set lower temperature limit, the temperature controller 5 starts the ethanol burner 2 to turn on and opens the solenoid valve 6, the heating coil 4 and then heats the air to increase the temperature in the greenhouse. When the detection head 12 detects that the temperature reaches the upper limit of the set temperature, the temperature controller 5 closes the ethanol burner 2 and the solenoid valve 6 and stops heating. This cycle is repeated to achieve automatic control of the temperature regulation in the greenhouse. Ethanol is stored in a tank 10, which is connected to the ethanol burner 2 through a pipeline 9.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic controlled heating furnace using ethanol as fuel in a seedling greenhouse, characterized in that: The invention comprises a heat exchange box (1), an ethanol burner (2), a fan (3), a coil (4) and a temperature controller (5); the coil (4) is fixedly installed inside the cavity of the heat exchange box (1); one end of the coil (4) is connected to the ethanol burner (2); an outlet (8) is arranged at the top of the heat exchange box (1); and an upper opening (7) is arranged at the top of the heat exchange box (1).

2. The automatic controlled heating furnace using ethanol as fuel for a seedling raising greenhouse according to claim 1, characterized in that: A mounting groove is provided on the side of the heat exchange box (1), and a fan (3) is fixedly installed inside the mounting groove.

3. The automatic controlled heating furnace using ethanol as fuel for a seedling raising greenhouse according to claim 1, characterized in that: The ethanol burner (2) is electrically connected to a temperature controller (5), and the temperature controller (5) is electrically connected to a solenoid valve (6).

4. The automatic controlled heating furnace using ethanol as fuel for a seedling raising greenhouse according to claim 1, characterized in that: The temperature controller (5) is electrically connected to a detection head (12), and a support plate (11) is provided on the surface of the coil (4).

5. The automatic controlled heating furnace using ethanol as fuel for a seedling raising greenhouse according to claim 1, characterized in that: A connecting pipe is fixedly installed on the side of the ethanol burner (2), and a solenoid valve (6) is arranged on the other side of the connecting pipe. A pipeline (9) is fixedly installed on the side of the solenoid valve (6), and a tank (10) is fixedly connected to the other end of the pipeline (9).

6. The automatic controlled heating furnace using ethanol as fuel for a seedling raising greenhouse according to claim 1, characterized in that: The upper port (7) is connected to the coil (4), and the coil (4) is connected to the outlet (8).

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