Root system temperature adjusting device suitable for elevated substrate cultivation of fruits and vegetables

Abstract

The utility model provides a fruit and vegetable root system temperature adjusting device suitable for elevated substrate cultivation, which comprises a geothermal system, an outer circulation system, an inner circulation system and a heat exchanger, the geothermal system is arranged in an elevated substrate, fruit and vegetable root systems are arranged in a cultivation environment, an outlet of the inner circulation system is communicated with the geothermal system through a water outlet pipe, and the inner circulation system is communicated with the geothermal system through a water outlet pipe. An inlet of the inner circulation system is communicated with the geothermal system through a water return pipe, the outer circulation system provides temperature adjusting water, and a water pipe of the outer circulation system and a water pipe of the inner circulation system are arranged in the heat exchanger in a crossed mode to conduct heat exchange. The external circulation system is used for heating or refrigerating, a heat source or a cold source is provided and then is exchanged to the internal circulation system through the heat exchanger, the internal circulation system is used for regulating the temperature of the root system, the system is safe and controllable, and the growth requirements of fruits and vegetables are met.

Description

Technical Field

[0001] This utility model generally relates to the field of soilless cultivation technology in agriculture, and more specifically, to a temperature control device suitable for the root systems of fruits and vegetables grown in elevated substrates. Background Technology

[0002] Currently, with the acceleration of urbanization, the demand for fresh vegetables and fruits in cities is increasing. Elevated substrate cultivation can avoid the problems of soil pollution and pests faced by traditional soil cultivation, reduce the labor intensity of bending over in soil cultivation, and make operation more convenient; it also allows fruit and vegetable production to no longer be limited by seasons, achieving year-round efficient production and meeting the needs of urban residents for fresh agricultural products.

[0003] Roots are the primary organs for plants to absorb water and nutrients, and temperature plays a crucial role in root growth. Suitable temperatures promote root growth and expansion. Generally, plant roots begin to grow at 12℃. However, due to lower temperatures in greenhouses during winter or early spring in northern regions, the temperature in the root growth zone of fruits and vegetables grown in elevated substrates decreases, inhibiting plant growth and even triggering low-temperature and high-humidity diseases. Increasing the root temperature of fruits and vegetables helps alleviate the effects of low-temperature stress on plant growth, allowing plants to maintain a faster growth rate even in cold seasons such as winter. This enhances the plant's ability to absorb water and nutrients, accelerates ripening, increases yield and quality, and ultimately leads to better economic benefits.

[0004] Therefore, how to accurately regulate the temperature of the root system of fruits and vegetables grown in elevated substrate to meet their growth requirements is an urgent technical problem to be solved. Utility Model Content

[0005] One of the main objectives of this invention is to overcome at least one of the defects of the prior art and provide a temperature control device for the root system of fruits and vegetables grown in elevated substrates, which can accurately regulate the temperature to meet their growth requirements.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] According to one aspect of this utility model, a root temperature regulation device for elevated substrate cultivation of fruits and vegetables is provided. This device regulates the temperature of the cultivation environment by adjusting the root temperature of fruits and vegetables grown in elevated substrate. It includes a geothermal system, an external circulation system, an internal circulation system, and a heat exchanger. The geothermal system is installed in the elevated substrate, and the fruit and vegetable roots are placed in the cultivation environment. The outlet of the internal circulation system is connected to the geothermal system via a water outlet pipe, and the inlet of the internal circulation system is connected to the geothermal system via a water return pipe. The external circulation system provides temperature-regulating water. The water pipes of the external circulation system and the water pipes of the internal circulation system are intersected in the heat exchanger for heat exchange.

[0008] According to one embodiment of the present invention, the geothermal system includes geothermal pipes, which are buried in the elevated substrate.

[0009] According to one embodiment of the present invention, the external circulation system includes a heating and cooling device, which is connected to the water pipe of the external circulation system.

[0010] According to one embodiment of the present invention, the heating and cooling device includes a heating mechanism and / or a cooling mechanism.

[0011] According to one embodiment of the present invention, the internal circulation system includes a water tank and a water pump, the water pump is disposed in the water tank, and the water outlet of the water pump is connected to the water pipe of the internal circulation system.

[0012] According to one embodiment of the present invention, the water tank is connected to the return water pipe, and a branch of the outlet water pipe is connected to the water tank.

[0013] According to one embodiment of the present invention, the water pipe, the return water pipe, the outlet water pipe, and the branch of the external circulation system are all equipped with switches.

[0014] According to one embodiment of the present invention, the water tank is connected to a water replenishment system.

[0015] According to one embodiment of the present invention, the elevated substrate, the water pipe of the external circulation system, and the water outlet pipe are all equipped with temperature sensors for temperature monitoring.

[0016] According to one embodiment of the present invention, the temperature regulating device further includes a control system, which is communicatively connected to the temperature sensor. Based on the data sent by the temperature sensor, the control system controls the operation of the internal circulation system and the external circulation system, as well as the on / off state of the return water pipe, the outlet water pipe and the external circulation water pipe.

[0017] As can be seen from the above technical solution, the advantages and positive effects of the root temperature regulation device for elevated substrate cultivation of fruits and vegetables of this utility model are as follows:

[0018] In this invention, heating or cooling is provided through an external circulation system to supply a heat source or cold source, which is then exchanged to an internal circulation system through a heat exchanger. The internal circulation system provides root temperature regulation, which is safe and controllable and meets the growth requirements of fruits and vegetables. Attached Figure Description

[0019] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0020] Figure 1 This is a schematic diagram of the structure of the root temperature regulation device for elevated substrate cultivation of fruits and vegetables.

[0021] Drawing number explanation:

[0022] 1. Elevated substrate; 11. Ambient temperature sensor; 2. Geothermal system; 3. External circulation system; 31. Water pipe; 32. Switch; 4. Internal circulation system; 41. Water tank; 42. Water tank temperature sensor; 43. Water pump; 44. Make-up water pump; 45. Return water pipe; 46. Outlet water pipe; 461. Switch; 47. Branch line; 471. Switch; 48. Water pump connection pipe; 5. Heat exchanger. Detailed Implementation

[0023] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0024] In the following description of various examples of the present invention, reference is made to the accompanying drawings, which form part of the present invention, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of the present invention. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of the present invention. Furthermore, although the terms “top,” “bottom,” “front,” “rear,” “side,” etc., may be used in this specification to describe various exemplary features and elements of the present invention, these terms are used herein only for convenience, such as the orientation according to the examples shown in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the present invention.

[0025] Figure 1 This is a schematic diagram of the structure of the root temperature regulation device for elevated substrate cultivation of fruits and vegetables.

[0026] like Figure 1As shown, the present invention provides a root temperature regulation device for elevated substrate cultivation of fruits and vegetables. It regulates the temperature of the cultivation environment 1, including heating to increase the temperature and inputting a cold source to lower the temperature during hot summer months.

[0027] In this embodiment, the root temperature control device for elevated substrate cultivation of fruits and vegetables includes: a geothermal system 2, an external circulation system 3, an internal circulation system 4, and a heat exchanger 5. The geothermal system 2 is installed within the elevated substrate 1, and the fruit and vegetable roots are placed in the cultivation environment. The geothermal system 2 regulates the temperature of the cultivation environment 1, which is an elevated substrate. Geothermal pipes can be installed within the geothermal system 2 and buried within the cultivation environment 1 to uniformly regulate the temperature of the cultivation environment 1.

[0028] In this embodiment, the outlet of the internal circulation system 4 is connected to the geothermal system 2 through the outlet pipe 46, and the inlet of the internal circulation system 4 is connected to the geothermal system 2 through the return pipe 45. The external circulation system 3 provides temperature-regulating water, and the water pipe 31 of the external circulation system 3 and the water pipe of the internal circulation system 4 are arranged crosswise in the heat exchanger 5 for heat exchange.

[0029] In this embodiment, the external circulation system 3 includes a heating and cooling device (not shown in the figure), which is connected to the external circulation water pipe 31. The heating and cooling device includes a heating mechanism and / or a cooling mechanism, which can be a heating boiler, air conditioner, etc., and can provide hot water and cold water as a heat source and a cold source.

[0030] In this embodiment, the internal circulation system 4 includes a water tank 41 and a water pump 43. The water pump 43 is installed in the water tank 41, and its outlet is connected to the water pipe of the internal circulation system 4. In this embodiment, the water pump 43 is connected to the heat exchanger 5 through the water pump connector 48, and after heat exchange, it is connected to the geothermal system 2 through the outlet pipe 46.

[0031] In this embodiment, the water tank 41 is connected to the return water pipe 45, and the branch 47 of the outlet water pipe 46 is connected to the water tank 41.

[0032] In this embodiment, the external circulation system 3 has a switch 32 on the water pipe 31, a switch on the return water pipe 45, a switch 461 on the outlet water pipe 46, and a switch 471 on the branch line 47. These switches can be manual switches or solenoid valves.

[0033] In this embodiment, the water tank 41 is connected to a water replenishment system via a water replenishment pump 44, which replenishes water when the water tank is short of water.

[0034] In this embodiment, the cultivation environment 1 is equipped with an ambient temperature sensor 11, the water tank 41 is equipped with a water tank temperature sensor 42, the external circulating water 31 is equipped with a temperature sensor, and the water outlet pipe 46 is equipped with a temperature sensor for temperature monitoring.

[0035] In this embodiment, the temperature control device also includes a control system (not shown in the figure). The control system is connected to each temperature sensor and controls the operation of the inner circulation system 4 and the outer circulation system 3, as well as the opening and closing of the return water pipe 45, the outlet water pipe 46 and the water pipe 31 of the outer circulation system 3, based on the data sent by each temperature sensor.

[0036] In this embodiment, the water supply temperature in the external circulation system 3 is set via the indoor cabinet control panel; the minimum temperature of the internal circulation system and the maximum temperature of the cultivation environment 1 are set via the environmental control system. When the water temperature in the water tank 41 of the internal circulation system 4 is lower than the water supply temperature set in the external circulation system 3, the external circulation system 3 is started, the switch 32 is turned on, the hot water in the heating pipe of the external circulation system 3 transfers heat to the heat exchanger 5, and then the water after heat exchange returns to the external circulation system 3 for circulation; when the water temperature in the water tank 41 of the internal circulation system 4 is equal to or higher than the water supply temperature set in the external circulation system 3, the switch 32 is turned off, and the external circulation system 3 stops working. When the temperature of the cultivation environment 1 is lower than the set minimum temperature and the water supply temperature of the internal circulation system 4 is higher than the temperature of the cultivation environment 1, the switch 461 of the outlet pipe 46 of the internal circulation system 4 opens, and the switch in the return pipe 45 of the internal circulation system 4 opens. Water supplied by the internal circulation system 4 heats the cultivation environment 1 and then flows back to the water tank 41, circulating repeatedly until the temperature of the cultivation environment 1 is equal to or higher than the set maximum temperature, at which point the internal circulation system 4 stops working. When the water supply temperature of the internal circulation system 4 is lower than the temperature of the cultivation environment 1, the internal circulation system 4... When the outlet pipe 46 is closed by switch 461 and the branch pipe 47 is opened by switch 471, the hot water in the internal circulation system 4 does not enter the geothermal pipe of the cultivation environment 1, but only circulates in the water tank 41 and the water pump connection pipe 48, and is repeatedly heated by the heat exchanger 5 until the supply water temperature is higher than the temperature of the cultivation environment 1. Then, it enters the geothermal pipe of the cultivation environment 1 to heat the cultivation environment 1. When the temperature of the cultivation environment 1 is equal to or higher than the set maximum temperature, the internal circulation system 4 stops working. When the water volume in the water tank 41 of the internal circulation system 4 is insufficient, water can be added through the water replenishment valve 44.

[0037] As can be seen from the above technical solution, the advantages and positive effects of the root temperature regulation device for elevated substrate cultivation of fruits and vegetables of this utility model are as follows:

[0038] In this invention, heating or cooling is provided by the external circulation system 3, which then exchanges heat with the internal circulation system 4 via the heat exchanger 5. The internal circulation system 4 provides root temperature regulation, ensuring safety and controllability to meet the growth requirements of fruits and vegetables. This invention can also perform temperature control according to the different temperature needs of fruits and vegetables at different stages of growth, thereby increasing yield.

[0039] Those skilled in the art to which this utility model pertains should understand that the specific structures and processes shown in the above detailed embodiments are merely exemplary and not restrictive. Furthermore, those skilled in the art can combine the various technical features described above in various possible ways to form new technical solutions or make other modifications, all of which fall within the scope of this utility model.

Claims

1. A root temperature regulation device suitable for elevated substrate cultivation of fruits and vegetables, used for root temperature regulation of elevated substrate cultivation of fruits and vegetables, and for adjusting the temperature of the cultivation environment, characterized in that... include: The system comprises a geothermal system, an external circulation system, an internal circulation system, and a heat exchanger. The geothermal system is installed in an elevated substrate, and the roots of fruits and vegetables are placed in the cultivation environment. The outlet of the internal circulation system is connected to the geothermal system through an outlet pipe, and the inlet of the internal circulation system is connected to the geothermal system through a return pipe. The external circulation system provides temperature-regulating water. The water pipes of the external circulation system and the water pipes of the internal circulation system are arranged crosswise in the heat exchanger for heat exchange.

2. The root temperature regulation device for elevated substrate cultivation of fruits and vegetables as described in claim 1, characterized in that, The geothermal system includes geothermal pipes, which are buried in the elevated substrate.

3. The root temperature regulation device for elevated substrate cultivation of fruits and vegetables as described in claim 1, characterized in that, The external circulation system includes a heating and cooling device, which is connected to the water pipes of the external circulation system.

4. The root temperature regulation device for elevated substrate cultivation of fruits and vegetables as described in claim 3, characterized in that, The heating and cooling device includes a heating mechanism and / or a cooling mechanism.

5. The root temperature regulation device for elevated substrate cultivation of fruits and vegetables as described in claim 1, characterized in that, The internal circulation system includes a water tank and a water pump. The water pump is installed in the water tank, and the water outlet of the water pump is connected to the water pipe of the internal circulation system.

6. The root temperature regulation device for elevated substrate cultivation of fruits and vegetables as described in claim 5, characterized in that, The water tank is connected to the return water pipe, and a branch of the outlet water pipe is connected to the water tank.

7. The root temperature regulation device for elevated substrate cultivation of fruits and vegetables as described in claim 6, characterized in that, The external circulation system's water pipes, return water pipes, outlet water pipes, and branch lines are all equipped with switches.

8. The root temperature regulation device for elevated substrate cultivation of fruits and vegetables as described in claim 5, characterized in that, The water tank is connected to a water replenishment system.

9. The root temperature regulation device for elevated substrate cultivation of fruits and vegetables as described in any one of claims 1-8, characterized in that, Temperature sensors are installed in the elevated substrate, the water pipes of the external circulation system, and the water outlet pipe for temperature monitoring.

10. The root temperature regulation device for elevated substrate cultivation of fruits and vegetables as described in claim 9, characterized in that, The temperature control device also includes a control system, which is communicatively connected to the temperature sensor. Based on the data sent by the temperature sensor, the control system controls the operation of the internal circulation system and the external circulation system, as well as the opening and closing of the return water pipe, the outlet water pipe, and the water pipe of the external circulation system.

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