Temperature control system of smart farm air house

Abstract

The present invention relates to a temperature control system of a smart farm air house, more specifically to a temperature control system comprising: an air house (10) forming the frame of the house using compressed air; a heating-medium house (20) covering the outer surface of the air house (10), closely attaching thereto; a buried underground tank (30) storing heating medium underground; a heating-medium circulation means (40) for circulating the heating-medium between the heating-medium house (20) and buried underground tank (30); and a heat-exchange means (50) for heating or cooling the heating medium using the soil temperature.

Description

Smart Farm Airhouse Temperature Control System

[0001] The present invention relates to a temperature control system for a smart farm air house, and more specifically, to a temperature control system comprising an air house (10) that forms the frame of a house using compressed air, a heat medium house (20) that tightly surrounds the outer surface of the air house (10), an underground tank (30) that stores the heat medium underground, a heat medium circulation means (40) that circulates the heat medium between the heat medium house (20) and the underground tank (30), and a heat exchange means (50) that heats or cools the heat medium using soil temperature.

[0002]

[0003] A smart farm is an automated farm that integrates the Internet of Things (IoT) or information and communication technology (ICT) throughout the farming process to optimize crop growth conditions. While these smart farms primarily cultivate crops in conventional vinyl or glass greenhouses, air houses have also been developed, which utilize compressed air injected into air tubes or double-spaced cells to form the greenhouse framework without the use of steel frames.

[0004] Because these smart farms artificially regulate the temperature inside the greenhouse, controlling it requires significant energy and costs. Therefore, systems that use soil temperature to control the temperature of greenhouses for crop cultivation are being developed.

[0005] Normally, the temperature of the surface is almost the same as the air temperature, but at a depth of about 3 to 4 meters underground, temperature changes due to day and night, as well as seasonal changes, are almost nonexistent. This is called the ground temperature (hereinafter, "geothermal" or "geothermal" is also used interchangeably). Therefore, the ground temperature is lower than the air temperature during the day or in the summer, and it is generally higher than the air temperature at night or in the winter.

[0006] As a temperature control system utilizing the ground temperature, for example, Patent Publication No. 10-2010-0062755 (June 10, 2010) discloses a cooling and heating system for a water curtain facility utilizing the latent heat of groundwater, comprising a circulating heat medium injector that forms a cooling or heating water curtain by causing a liquid heat medium that has exchanged heat with the latent heat of groundwater to flow between the outer and inner membranes of a water curtain facility house, and a collecting unit that collects the liquid heat medium that has flowed between the outer and inner membranes.

[0007] In addition, Patent Registration No. 10-1672353 (October 28, 2016) discloses an assembled air house configured to bury a liquid heat medium storage tank that accumulates geothermal heat inside a work space of an air house, suck in air from the work space, exchange heat with the liquid heat medium stored in the tank, and then discharge some of it back into the work space.

[0008] Patent No. 10-1801480 (November 20, 2017) discloses a heating system for a vinyl house, which uses solar heat and geothermal heat to heat water in a heat exchange tank, heats refrigerant passing through an evaporation coil of a heat pump, and then heats heating water stored in a hot water tank, and circulates the heating water inside the vinyl house through heating water pipes.

[0009] Lastly, Patent Publication No. 10-2023-0065117 (May 11, 2023) discloses an air dome smart farm including an air dome roof made of an outer membrane and an inner membrane, a water tank buried in the ground inside the air dome roof, and a geothermal heat exchanger that exchanges heat with the water stored in the water tank, and forms a water film for temperature control by supplying mist from the water tank between the inner membrane and the outer membrane of the air dome roof.

[0010]

[0011] The problem to be solved by the present invention is to provide a temperature control system that can effectively control the temperature of a smart farm air house by utilizing the ground temperature with almost no daily temperature difference.

[0012] Another problem that the present invention seeks to solve is to provide a temperature control system using ground temperature, which can reduce the energy and cost required to control the temperature of a smart farm air house.

[0013] Another problem that the present invention seeks to solve is to provide a temperature control system that can effectively manage smart farms even in areas with large temperature differences between day and night, such as deserts or highlands.

[0014]

[0015] The temperature control system of the smart farm air house according to the present invention is

[0016] An air house that is composed of a double space or air tube and forms the frame of a house for a smart farm by injecting compressed air into the double space or air tube;

[0017] A heat medium house that is formed of a double space filled with a liquid heat medium inside and that tightly surrounds the outer surface of the air house, and is supported by the air house;

[0018] An underground tank buried underground that stores the heat medium supplied to the heat medium house;

[0019] A heat medium circulation means including a heat medium supply pipe and circulation pump that supply the heat medium stored in the above-mentioned underground tank to the inside of the double space of the heat medium house, and a heat medium recovery pipe and hydraulic control valve that recover the heat medium filled in the double space of the above-mentioned heat medium house to the underground tank;

[0020] A heat exchange means for exchanging heat between the heat medium stored in the above-mentioned underground tank and the soil temperature;

[0021] It is characterized by being composed of including.

[0022] In addition, the present invention is characterized by further including an air conditioning means that additionally sucks indoor air of the air house, exchanges heat while passing it through the inside of an underground tank, and then supplies it back into the interior of the air house.

[0023]

[0024] The temperature control system of a smart farm air house according to the present invention controls the temperature of a smart farm air house by using the ground temperature with almost no temperature difference between day and night, thereby greatly saving energy and costs required for operating a smart farm, and in particular, it is effective in enabling management of a smart farm using an air house even in areas with extreme daily temperature differences such as deserts or highlands.

[0025]

[0026] Figure 1 is a configuration diagram of a temperature control system of a smart farm air house according to the present invention.

[0027]

[0028] Hereinafter, the present invention will be described in detail using the attached drawings. However, since the attached drawings illustrate preferred embodiments of the present invention, the scope of the present invention is not limited by these embodiments. Furthermore, even if it is essential for implementing the present invention, a detailed description will be omitted for elements that are introduced in prior art or can be easily implemented by those skilled in the art based on known techniques.

[0029] Among the components belonging to the present invention, the term "~means" refers to a unit that processes at least one common function or operation, and may be implemented by hardware, software, or a combination thereof. Furthermore, "including" a component means that, in addition to the specified components, other components may be included as needed.

[0030] The temperature control system of a smart farm air house according to the present invention is configured to include, as shown in FIG. 1, an air house (10) forming the frame of the house, a heat medium house (20) that tightly surrounds the outer surface of the air house (10), an underground tank (30) that stores the heat medium underground, a heat medium circulation means (40) that circulates the heat medium between the heat medium house (20) and the underground tank (30), and a heat exchange means (50) that heats or cools the heat medium using the ground temperature.

[0031] First, the air house (10), like a typical smart farm air house, is composed of a double-spaced structure or air tube, and compressed air is injected into the double-spaced structure or air tube to form the frame of the house. The air house (10) forms the frame of the house and functions to physically support the load of the heat medium house (20).

[0032] The structure of the above air house (10) may be comprised of walls and a roof, and inside it, a crop cultivation bed configured for conventional crop cultivation facilities, such as aeroponics farming, may be installed. The structure of such a crop cultivation bed is specifically disclosed in the applicant's patent application No. 10-2023-0070133.

[0033] In addition, the structure of the double space that constitutes the wall and the roof is disclosed in Patent Registration No. 10-1521277, etc., and the structure of the air tube can be referenced in Utility Model Registration No. 20-0353437, etc. The structure of the roof that constitutes the air house (10) may be a flat slab type, a dome type, or a triangular roof.

[0034] Next, the heat medium house (20) is formed of a double-spaced material that tightly surrounds the outer surface of the air house (10). Therefore, it is preferable that the air house (10) and the heat medium house (20) have shapes that correspond to each other. In addition, an attachment means, such as a Velcro tape or a fixing strap, may be installed at the boundary between the air house (10) and the heat medium house (20) to secure both sides in close contact with each other at an appropriate location.

[0035] The double-spaced structure constituting the above-mentioned heat medium house (20) is filled with a liquid heat medium, and water can be used as this heat medium. Since water has a much higher specific heat than air, filling the inside of the heat medium house (20) with water can prevent the temperature inside the house from rising sharply due to direct sunlight during the day or from dropping at night, for example.

[0036] Next, the underground tank (30) is buried underground to store the heat medium supplied to the heat medium house (20). The underground tank (30) is preferably buried inside the air house (10), but is not limited thereto. The underground tank (30) is preferably buried at a depth of 2 to 5 m underground.

[0037] The above-mentioned underground tank (30) may also have the function of fixing the air house (10) and the heat medium house (20) to the ground. To this end, a fixing cable (not shown in the drawing) may be installed between the lower portion of the air house (10) and the heat medium house (20) and the underground tank (30).

[0038] The above heat medium circulation means (40) supplies the heat medium stored in the underground tank (30) to the inside of the double space forming the heat medium house (20), and also has the function of recovering the heat medium filled in the double space to the underground tank (30).

[0039] This heat medium circulation means (40) may include a heat medium supply pipe (41) and a heat medium recovery pipe (42) connecting the heat medium house (20) and the underground tank (30), and a circulation pump (43) and a hydraulic control valve (44) installed therein, respectively. The circulation pump (43) supplies the heat medium to the heat medium house (20) through the heat medium supply pipe (41).

[0040] And, when the hydraulic pressure of the heat medium injected into the heat medium house (20) exceeds a predetermined pressure, the hydraulic control valve (44) automatically opens and recovers the heat medium to the underground tank (30) through the heat medium recovery pipe (42). Therefore, the heat medium injected into the heat medium house (20) can always maintain a constant hydraulic pressure. The circulation pump (43) and the hydraulic control valve (44) can be configured to operate in conjunction with each other.

[0041] Lastly, the heat exchange means (50) has the function of heating or cooling the heat medium stored in the underground tank (30) using the ground temperature, and an appropriate configuration can be adopted from among conventional heat exchange means. This heat exchange means (50) can have the function of cooling the heat medium during the day and heating the heat medium at night, for example.

[0042] The heat exchange means (50) may be installed within and around the underground tank (30), preferably deeper underground than the underground tank (30), and may include, for example, a heat exchange pipe that circulates the heat medium underground. The heat exchange means (50) may further include a means for artificially heating or cooling the heat medium.

[0043] The temperature control system of the smart farm air house according to the present invention may further include an air conditioning means (60) that sucks indoor air of the air house (10), passes it through the interior of the underground tank (30), and then supplies it back into the interior of the air house (10). Through this air conditioning means (60), the indoor air of the air house (10) is heated or cooled while passing through the underground tank (30), and then supplied back into the interior of the air house (10).

[0044]

[0045] <Explanation of symbols>

[0046] (10) Airhouse

[0047] (20) Heat medium house

[0048] (30) Underground tank

[0049] (40) Heat medium circulation means

[0050] (41) Heat medium supply pipe

[0051] (42) Heat medium recovery pipe

[0052] (43) Circulation pump

[0053] (44) Hydraulic control valve

[0054] (50) Heat exchange means

Claims

1. An air house that is composed of a double space sheet or an air tube, and forms the frame of a house for a smart farm by injecting compressed air into the double space sheet or the air tube; A heat medium house that is formed of a double space filled with a liquid heat medium inside and is supported by the air house, which tightly surrounds the outer surface of the air house; An underground tank buried underground that stores the heat medium supplied to the heat medium house; A heat medium circulation means including a heat medium supply pipe and circulation pump that supply the heat medium stored in the above-mentioned underground tank to the inside of the double space of the heat medium house, and a heat medium recovery pipe and hydraulic control valve that recover the heat medium filled in the double space of the above-mentioned heat medium house to the underground tank; A heat exchange means that exchanges heat between the heat medium stored in the above-mentioned underground tank and the soil temperature; The temperature control system of a smart farm air house, characterized by comprising:

2. A temperature control system for a smart farm air house, characterized in that in the first paragraph, it further includes an air conditioning means that sucks in indoor air of the air house, passes it through the interior of the underground tank, exchanges heat with it, and then supplies it back into the interior of the air house.

3. A temperature control system for a smart farm air house, characterized in that, in the first or second paragraph, corresponding attachment means are provided between the boundary surfaces of the air house and the heat medium house.

4. A temperature control system of a smart farm air house, characterized in that the heat medium in the first or second paragraph is water.

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