JP-7857196-B2 - Temperature control system for plant growth

JP7857196B2JP 7857196 B2JP7857196 B2JP 7857196B2JP-7857196-B2

Inventors

上松康二
杉本明男

Assignees

株式会社神戸製鋼所

Dates

Publication Date: 20260512
Application Date: 20220915

Claims (15)

A temperature control system for assisting the growth of plants planted in a growing medium, A long cultivation bed comprising one or more rows for receiving the culture medium, A temperature control panel is formed in the shape of a panel with wall thickness, and has a heat transfer medium channel formed inside through which a heat transfer medium at a temperature higher or lower than the ambient temperature flows, The temperature control panel has a pair of main walls facing each other in the thickness direction of the temperature control panel, and in a cross-section perpendicular to the longitudinal direction of the temperature control panel , the distance from one end to the other of the pair of main walls in the panel width direction is longer than the wall thickness, and the heat transfer fluid flow path is defined by the pair of main walls. The temperature control panel extends along the longitudinal direction of the cultivation bed, and the outer surface of at least one of the pair of main walls is positioned in close proximity to the growing medium or the plants. A temperature control system for plant growth.
The aforementioned one or more rows of cultivation beds includes multiple rows of the aforementioned cultivation beds, The temperature control panel is positioned between two adjacent rows of cultivation beds in the bed width direction, or one row of cultivation beds is positioned between two temperature control panels in the bed width direction. The thickness direction of the temperature control panel is oriented in the direction of the bed width, and the pair of main walls extend in the longitudinal direction and vertical direction of the bed. A temperature control system for plant growth according to claim 1.
At least one of the pair of main walls has an outer surface that is light-diffusing or light-reflecting. The temperature control system for plant growth according to claim 2.
The temperature control panel constitutes the bottom of the cultivation bed. A temperature control system for plant growth according to claim 1.
The temperature control panel has a receiving portion for receiving the liquid culture medium. The temperature control system for plant growth according to claim 4.
The temperature control panel has a vertical wall portion that extends upward from one end of the receiving portion and is in close proximity to the plant. The temperature control system for plant growth according to claim 5.
The temperature control panel is provided independently of the heat transfer fluid channel and has a gas channel through which a gas containing carbon dioxide is passed. An outlet is provided on the outer surface of at least one of the pair of main walls for ejecting the gas in the gas channel toward the plant. A temperature control system for plant growth according to claim 1.
The temperature control panel forms a plurality of heat transfer fluid channels that extend parallel to each other. A temperature control system for plant growth according to any one of claims 1 to 7.
The plurality of heat transfer fluid channels are arranged between the pair of main walls along the width direction of the panel . A temperature control system for plant growth according to claim 8.
The plurality of heat transfer fluid channels extend in the direction of the bed extension, A temperature control system for plant growth according to claim 8.
The plurality of heat transfer fluid passages include one or more first heat transfer fluid passages that allow the heat transfer fluid to flow in one direction, and one or more second heat transfer fluid passages that allow the heat transfer fluid to flow in the opposite direction to the first direction. A temperature control system for plant growth according to claim 10.
The first heat transfer fluid channel and the second heat transfer fluid channel are arranged alternately along the cross-sections of the pair of main walls. The temperature control system for plant growth according to claim 11.
The plurality of heat transfer fluid channels extend in a direction intersecting the bed extension direction, A temperature control system for plant growth according to claim 8.
The temperature control panel has a hollow portion that constitutes the heat transfer fluid channel and includes a main body made of extruded material. A temperature control system for plant growth according to any one of claims 1 to 7.
The temperature control panel further includes a pair of headers that close the openings in the hollow portion at each end of the extruded material, The pair of headers are provided with an inlet for introducing the heat transfer medium into the heat transfer medium channel and an outlet for introducing the heat transfer medium out of the heat transfer medium channel. A temperature control system for plant growth according to claim 14.

Description

This invention relates to a temperature control system and temperature control panel for plant growth. Patent documents 1 and 2 disclose a growth apparatus having a water pipe through which a heat transfer medium flows, thereby regulating the temperature around a plant or growing medium. For example, the roots of a plant seedling, such as a strawberry, are laid on the outer surface of the water pipe, thereby promoting plant growth. Japanese Patent Publication No. 2017-148020Japanese Patent Publication No. 2017-153471 A perspective view of an agricultural greenhouse to which a temperature control system according to the first embodiment of the present invention is applied.A perspective view of the temperature control panel according to the first embodiment.An exploded perspective view of the temperature control panel according to the first embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the first embodiment.A longitudinal cross-sectional view of the temperature control panel according to the first embodiment.A diagram showing the flow of the heat transfer medium in the temperature control system according to the first embodiment.An exploded perspective view of a temperature control panel according to a second embodiment of the present invention.A longitudinal cross-sectional view of the temperature control panel according to the second embodiment.A diagram showing the flow of the heat transfer medium in the temperature control system according to the second embodiment.An exploded perspective view of the temperature control panel according to the third embodiment.A longitudinal cross-sectional view of the temperature control panel according to the third embodiment.A diagram showing the flow of the heat transfer medium in the temperature control system according to the third embodiment.A diagram showing the flow of the heat transfer medium in the temperature control system according to the fourth embodiment.A diagram showing the flow of the heat transfer medium in the temperature control system according to the fifth embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the sixth embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the seventh embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the eighth embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the ninth embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the 10th embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the 11th embodiment.A cross-sectional view of a temperature control panel and cultivation bed according to the 12th embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the 13th embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the 14th embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the 15th embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the 16th embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the 17th embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the 18th embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the 19th embodiment.A cross-sectional view of the temperature control panel and cultivation bed according to the 20th embodiment. The embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) Referring to Figure 1, the temperature control system 1 according to the first embodiment is used to assist the growth of plants 2. The plants 2 are preferably crops (agricultural crops such as forage crops, horticultural crops, and industrial crops). The temperature control system 1 adjusts the ambient temperature of the plants 2 and the growing medium 3 in which they are planted. Temperature can be controlled more effectively in a closed environment, and the temperature control system 1 is suitably applied to a closed environment such as an agricultural greenhouse 100. The plants 2 are also suitable if they are suitable for greenhouse cultivation, and in this respect, general crops and horticultural crops are suitable examples among agricultural crops. General crops include wheat, rice, potatoes, and beans. Horticultural crops include vegetables, fruit trees, and flowers. The growing medium 3 is the growth medium for the plants 2. The growing medium 3 is appropriately selected from soil, rock wool, and nutrient solution, taking into consideration its compatibility with the plants 2 being cultivated. The agricul