KR-20260065062-A - heating water circulating control system for greenhouse or livestock

KR20260065062AKR 20260065062 AKR20260065062 AKR 20260065062AKR-20260065062-A

Abstract

The present invention relates to a heating water circulation control system for a greenhouse or livestock barn. The heating water circulation control system of the present invention comprises: a boiler (3) equipped with an inlet pump (1) for supplying heating water to the outside, a recovery pump (2) for recovering heating water discharged to the outside, a heating water storage tank (3b) in which the heating water is stored, and a heating device (3a) for heating the heating water inside the heating water storage tank (3b); a heating pipe (5) installed on the floor or wall of a greenhouse (4) or livestock barn with one side and the other side connected to the inlet pump (1) and the recovery pump (2) to heat the floor or wall of the greenhouse or livestock barn; and a fan coil unit (6) disposed inside the greenhouse or livestock barn with one side and the other side connected to the inlet pump (1) and the recovery pump (2) to heat the space inside the greenhouse or livestock barn. In the heating water circulation control system of a greenhouse or livestock barn, the heating water comprises: a pipe internal temperature sensor (10) for measuring the temperature of the heating water inside the heating pipe (5); and a greenhouse air temperature sensor (20) for measuring the ambient temperature inside the greenhouse (4) or livestock barn. A water intake pump operation input unit (31) in which the temperature of the heating water inside the heating pipe (5) for operating the water intake pump (1) and the operating time of the water intake pump (1) are input by user input; a water intake pump operation control unit (32) electrically connected to the water intake pump operation input unit (31), the pipe internal temperature sensor (10), and the water intake pump (1), which controls the operation of the water intake pump (1) by comparing the temperature of the heating water input to the water intake pump operation input unit (31) with the temperature of the pipe internal temperature sensor (10); a recovery pump operation input unit (33) in which the ambient temperature inside the greenhouse or livestock barn for operating the recovery pump (2) and the timer-type operating time of the recovery pump (2) are input by user input; and an ambient temperature input to the recovery pump operation input unit (33) and the temperature of the recovery pump (2) electrically connected to the recovery pump operation input unit (33), the greenhouse air temperature sensor (20), and the recovery pump (2). The pump operation controller (30) comprises a recovery pump operation control unit (34) that controls the operation of the recovery pump (2) by comparing the temperature of the greenhouse air temperature sensor (20) and controls the operation of the recovery pump (2) according to the timer operation time input to the recovery pump operation input unit (33); a heat pump (40) that is connected to the boiler (3) and additionally heats the heating water inside the boiler (3); and a heating water heating controller (50) that is electrically connected to the heating device (3a) of the boiler (3) and the heat pump (40) and selectively controls the operation of the heating device (3a) and the heat pump (40). According to the present invention, a heating water circulation control system is provided that can reduce fuel and electricity consumption while minimizing facility costs through improvement work involving the attachment of several sensors, controllers, and heat pumps to existing farms or livestock barns that use boilers for floor heating and air heating. More specifically, the boiler is operated only when the temperature of the heating water in the storage tank is significantly low, such as during the initial operation, and otherwise, the heating water temperature inside the storage tank is maintained at a constant level using a heat pump, thereby reducing fuel and electricity costs consumed to maintain the heating water temperature. Furthermore, when the heating water temperature drops due to heat loss in the heating pipes inside the greenhouse, the heating water is supplied at high pressure through an intake pump with relatively high pressure to maintain the temperature of the heating water inside the greenhouse pipes as constant as possible. Additionally, a return pump operating at relatively low pressure (suction pressure) continuously operates in accordance with the drop in the ambient temperature inside the greenhouse and the timer cycle, thereby ensuring that the heating water supply is provided immediately and sensitively to temperature changes, allowing for user-customized temperature control according to the cultivated crops and the internal and external environment of the greenhouse. In addition, since the fan coil unit has a small internal pipe diameter and a long pipe to achieve sufficient heat exchange, the flow of heating water becomes relatively slower compared to the heating pipe side when the inlet pump supplies heating water at high pressure. This allows heat exchange to occur with sufficient residence time, and whenever the internal temperature of the greenhouse drops, the heating water is circulated and replenished by the operation of the return pump, which operates at a lower pressure (suction pressure) compared to the inlet pump, thereby minimizing unnecessary heat consumption.

Inventors

김진호

Assignees

김진호

Dates

Publication Date: 20260508
Application Date: 20241031

Claims (5)

A heating water circulation control system for a greenhouse or livestock barn comprising: a boiler (3) equipped with an inlet pump (1) for supplying heating water to the outside, a recovery pump (2) for recovering heating water discharged to the outside, a heating water storage tank (3b) in which the heating water is stored, and a heating device (3a) for heating the heating water inside the heating water storage tank (3b); a heating pipe (5) installed on the floor or wall of a greenhouse (4) or livestock barn with one side and the other side connected to the inlet pump (1) and the recovery pump (2) to heat the floor or wall of the greenhouse or livestock barn; and a fan coil unit (6) disposed inside the greenhouse or livestock barn with one side and the other side connected to the inlet pump (1) and the recovery pump (2) to heat the space inside the greenhouse or livestock barn. A pipe internal temperature sensor (10) for measuring the temperature of the heating water inside the heating pipe (5) above; A greenhouse air temperature sensor (20) for measuring the ambient temperature inside the greenhouse (4) or livestock barn; A water intake pump operation input unit (31) in which the temperature of the heating water inside the heating pipe (5) for operating the water intake pump (1) and the operating time of the water intake pump (1) are input by user input; a water intake pump operation control unit (32) electrically connected to the water intake pump operation input unit (31), the pipe internal temperature sensor (10), and the water intake pump (1), which controls the operation of the water intake pump (1) by comparing the temperature of the heating water input to the water intake pump operation input unit (31) with the temperature of the pipe internal temperature sensor (10); a recovery pump operation input unit (33) in which the ambient temperature inside the greenhouse or livestock barn for operating the recovery pump (2) and the timer-type operating time of the recovery pump (2) are input by user input; and an ambient temperature input to the recovery pump operation input unit (33) and the temperature of the recovery pump (2) electrically connected to the recovery pump operation input unit (33), the greenhouse air temperature sensor (20), and the recovery pump (2). A pump operation controller (30) comprising a recovery pump operation control unit (34) that controls the operation of the recovery pump (2) by comparing the temperature of the greenhouse air temperature sensor (20) and controls the operation of the recovery pump (2) according to the timer operation time input to the recovery pump operation input unit (33); A heat pump (40) connected to the above boiler (3) and auxiliaryly heating the heating water inside the boiler (3); A heating water heating controller (50) that is electrically connected to the heating device (3a) of the boiler (3) and the heat pump (40) and selectively controls the operation of the heating device (3a) and the heat pump (40); comprising Heating water circulation control system for greenhouses or livestock barns.
In Article 1, The above boiler (3) is equipped with a boiler temperature sensor (3d) that measures the temperature of the heating water inside the heating water storage tank (3b), and The above heating water heating controller (50) is, Characterized by comparing the temperature difference of the heating water measured by the pipe internal temperature sensor (10) and the boiler temperature sensor (3d), operating the heat pump (40) when the temperature difference is less than or equal to a predetermined value, and operating the heating device (3a) when the temperature difference exceeds a predetermined value. Heating water circulation control system for greenhouses or livestock barns.
In Paragraph 2, The above heating water heating controller (50) is characterized by having a temperature difference value input unit (51) so that the user inputs the predetermined value that determines the selected operation of the heat pump (40) and the heating device (3a). Heating water circulation control system for greenhouses or livestock barns.
In Article 1, The above-mentioned water intake pump operation input unit (31) is composed of a mode input unit (31a) consisting of a plurality of mode buttons, a temperature input unit (31b) for inputting a set temperature for each mode, and an operation time input unit (31c) for inputting an operation time for each mode. The above pump operation controller (30) is, Timer (35) and, For each mode button of the above mode input unit (31a), an operation condition data storage unit (36) is further provided, in which a set temperature value entered from the temperature input unit (31b) and an operation time value entered from the operation time input unit (31c) are stored. The above intake pump operation control unit (32) is characterized by controlling the operation of the intake pump (1) based on the set temperature value and the operating time value stored in the above operating condition data storage unit (36). Heating water circulation control system for greenhouses or livestock barns.
In Article 1, The above recovery pump (2) and heating pipe (5) are connected through the recovery pipe (2a), and The above fan coil unit (6) and the intake pump (1) are connected through the fan coil supply pipe (6a), and the above fan coil unit (6) and the recovery pump (2) are connected through the fan coil discharge pipe (6b), A branch pipe (60) is further provided, with one side connected to the recovery pipe (2a) and the other side connected to the fan coil supply pipe (6a). A check valve (61) is installed at the connection point between the branch pipe (60) and the recovery pipe (2a), and A first recovery side temperature sensor (70) for measuring the temperature of the heating water recovered by the recovery pump (2) is installed in the recovery pipe (2a), and A second recovery side temperature sensor (71) for measuring the temperature of the heating water recovered by the recovery pump (2) is also installed in the above fan coil discharge pipe (6b). The above pump operation controller (30) is further provided with a valve control unit (37) that is electrically connected to the first recovery side temperature sensor (70), the second recovery side temperature sensor (71), and the check valve (61), and compares the temperature of the heating water measured by the first recovery side temperature sensor (70) and the second recovery side temperature sensor (71), and if the temperature value measured by the first recovery side temperature sensor (70) is higher than the temperature value measured by the second recovery side temperature sensor (71), controls the check valve (61) to control the heating water flowing from the recovery pipe (2a) to the recovery pump (2) to be supplied to the fan coil supply pipe (6a) through the branch pipe (60). Heating water circulation control system for greenhouses or livestock barns.

Description

Heating water circulating control system for greenhouse or livestock The present invention relates to a heating water circulation control system for a greenhouse or livestock barn. Generally, a boiler is a type of heating device configured to utilize the combustion heat generated when burning fuel to heat water or steam, and to repeat the process of warming an indoor space by circulating the heated water or steam along a designated path and exchanging heat with surrounding walls or air, after which it circulates again to be heated. Such boilers are classified according to the type of fuel used, such as electric boilers, oil boilers, gas boilers, and briquette boilers; according to their installation type, such as upright boilers or fire-tube boilers; and according to the method of heated water circulation, such as natural circulation water-tube boilers or forced circulation water-tube boilers. In addition, briquette boilers are widely used in greenhouses, such as vinyl greenhouses, installed to cultivate various crops like flowers and vegetables during the winter, as installation and fuel costs are relatively low. However, since such conventional briquette boilers are constructed with an upright structure in which the furnace where the briquettes are stored and burned is installed vertically, replacing the briquettes is not only very inconvenient, but there is also a problem in that replacing them takes a long time, especially when cultivating flowers in greenhouses, as the volume of briquettes to be replaced at once amounts to dozens or hundreds. Meanwhile, a conventional electric boiler is heated by applying power with a heating wire installed inside the boiler vessel to heat the water passing through the circulation pipe installed inside the boiler vessel, whereas a gas boiler or oil boiler is heated by igniting the gas or oil to heat the water passing through the circulation pipe inside the boiler vessel. However, while electric boilers constructed in this manner do not generate combustion gases or odors, there is a problem in that operating costs are very high because electricity must be supplied every time the boiler operates. Furthermore, in the case of gas or oil boilers, operating costs are high because gas or oil is consumed every time the boiler operates. Additionally, there is a serious problem in that large amounts of combustion gases are generated during operation, causing not only unpleasant odors but also becoming a major cause of air pollution. In order to improve the problems of such boiler systems for greenhouses, the "Heating Cost Reduction Device for Greenhouses" (Korean Registered Utility Model Publication No. 20-0223179, Patent Document 1) presents a technology in which hot water heated in a hot water boiler for supplying water is supplied into the indoors of a greenhouse as warm air from an air conditioner by forced airflow when passing through an air fin type or radiator type heat exchange coil through a hot water storage tank, using groundwater (hot spring water) as a heat source. Patent Document 1 has a problem in that when a fan coil unit passing through a heat exchange coil is not sufficiently heated, the blower is driven simply by the temperature inside the greenhouse, and the temperature of the blowing air differs from the temperature inside the greenhouse (when the temperature of the blowing air is lower than the temperature inside the greenhouse), causing the growth of crops around the blower to be delayed and the harvest time to change. In addition, since heat exchange by radiators or fan coil units takes place in specific areas within the greenhouse, there is a problem of relatively large temperature variations within the greenhouse. Another technology, "Housing and cooling system for vinyl greenhouses" (Korean Registered Patent Publication No. 10-1028827, Patent Document 2), involves installing hot water pipes under the vinyl greenhouse floor to heat the floor and installing fan coils at necessary locations to operate them. Here, the hot water pipes installed on the greenhouse floor are surrounded by a covering and primarily serve to prevent the soil on the floor surface from freezing, while the fan coils serve to prevent the indoor air from dropping and thereby hindering the growth of cultivated plants. Patent documents 1 and 2 have the advantage of low maintenance costs, but they have the disadvantages of high initial facility costs, short pump lifespan for heat exchange, and unstable after-sales service. Most facility farms primarily use a method that combines floor heating and convection heating based on the operation of a boiler, as described in Patent Document 2. In this method, the heating water is circulated only according to a fixed operating cycle of the intake pump and return pump attached to the boiler supplied and delivered by the boiler manufacturer. Typically, the controllers of boilers supplied by boiler companies are configured with separate sensors that