Plant leaf temperature control instrument with high applicability

Abstract

The utility model relates to a plant leaf temperature control instrument with high applicability, which comprises a rack, a cooling plate, a visible cover plate, a semiconductor refrigeration sheet, a radiator, a cooling fan, a temperature detector, a voltage stabilizer and a temperature controller. The rack has a first outer surface facing the outside, the cooling plate is arranged in the first outer surface, the visible cover plate is hingedly connected to the first outer surface, the cold surface of the semiconductor refrigeration sheet is attached to the cooling plate, the hot surface of the semiconductor refrigeration sheet is attached to the radiator, the temperature detector is connected to the rack through wires, the voltage stabilizer is arranged on the rack, and the temperature controller is electrically connected to the semiconductor refrigeration sheet, the temperature sensor and the voltage stabilizer. The plant leaf temperature control instrument with high applicability has the advantages of small size, high portability, low cost and the like due to the use of the semiconductor refrigeration sheet for refrigeration. In addition, the plant leaf observation is convenient, and the plant leaves can be directly observed without other operations of the user after being placed.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor refrigeration technology, and in particular to a highly applicable temperature control instrument for plant leaves. Background Technology

[0002] Research on plant cold tolerance is of great significance in agricultural breeding, ecological protection, and climate change adaptation studies. Plant leaves, as key organs for interaction between plants and their environment, have cold tolerance (such as cell structural stability and membrane permeability changes under low-temperature stress) as a core indicator for assessing plant cold resistance. To scientifically observe the cold tolerance of plant leaves, it is necessary to simulate rapid temperature changes in the natural environment (such as sudden cold waves) using experimental equipment and monitor the changes in the state of plant leaves during these abrupt temperature changes in real time.

[0003] In existing technologies, experimental equipment for studying the cold resistance of plant leaves mainly relies on imported products. These typically employ compressor refrigeration or liquid nitrogen-assisted cooling technology to simulate the low-temperature environment of plant leaf samples. However, such equipment has the following significant drawbacks: 1. The use of compressor refrigeration or liquid nitrogen-assisted cooling results in a bulky overall size, poor portability, and high cost; 2. Outdoor power connection is inconvenient, outdoor equipment stability is poor, and it is impossible to accurately measure the temperature of different parts of the leaf; 3. Furthermore, sample observation is inconvenient, requiring frequent opening of the refrigeration chamber to observe the plant leaves, which fails to meet the usage requirements. Utility Model Content

[0004] Based on this, the purpose of this utility model is to overcome the shortcomings of the existing technology and provide a plant leaf temperature control instrument with strong applicability.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A versatile temperature control device for plant leaves, comprising:

[0007] Rack, cooling plate, viewing cover, thermoelectric cooler, heat sink, cooling fan, temperature detector, voltage regulator and temperature controller;

[0008] The frame has a first outer surface facing outward, the cooling plate is disposed in the first outer surface, the visible cover is hinged to the first outer surface, and the visible cover can be rotated to a position that fits against the first outer surface so as to clamp the plant leaves together with the cooling plate;

[0009] The thermoelectric cooler, heat sink, cooling fan, and temperature controller are all housed within the frame. The cold side of the thermoelectric cooler is attached to the cooling plate, and the hot side of the thermoelectric cooler is attached to the heat sink. The cooling fan is used to dissipate heat from the heat sink. The temperature sensor is connected to the frame via wires and is equipped with a toggle switch. The voltage regulator is mounted on the frame. The temperature controller is electrically connected to the thermoelectric cooler, the temperature sensor, and the voltage regulator.

[0010] In one embodiment, the frame includes a base and an outer casing. The first outer surface is one side of the base. The base is provided with a mounting groove to accommodate the cooling plate. The outer casing is connected to the base to cover the radiator, cooling fan and temperature controller. The outer casing is provided with heat dissipation holes.

[0011] In one embodiment, the visible cover is hinged to the first outer surface via a damping hinge.

[0012] As one implementation, a handle is also provided on the outer casing.

[0013] As one implementation method, a tripod mounting base is also provided on the outer casing.

[0014] In one embodiment, the heat dissipation holes include a first ventilation hole facing the cooling fan and a second ventilation hole facing the radiator, and a protective mesh is installed on the first ventilation hole.

[0015] As one implementation, the versatile plant leaf temperature control instrument also includes a terminal block and a relay. The terminal block is located on the outer casing and electrically connected to the voltage regulator, and the relay is electrically connected between the temperature controller and the voltage regulator.

[0016] As one implementation, the versatile plant leaf temperature control instrument also includes a switch assembly, which is disposed in the outer casing and electrically connected to the temperature controller.

[0017] In one embodiment, when the visible cover is rotated to a position that fits against the first outer surface, there is a gap between the visible cover and the cooling plate to accommodate plant leaves.

[0018] In one implementation, two of the semiconductor cooling chip, heat sink, and cooling fan are provided.

[0019] The plant leaf temperature control instrument of this application has strong applicability. Because it uses a semiconductor refrigeration chip for cooling, it has the advantages of small size, high portability and low cost. It is also convenient to observe plant leaves. After placing the plant leaves, the user can directly observe the plant leaves without any other operation. At the same time, the plant leaf temperature detection is more comprehensive. When used outdoors, the power supply is more stable and has strong applicability.

[0020] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a plant leaf temperature control instrument with wide applicability in the embodiments of this application;

[0022] Figure 2 This is a structural schematic diagram from another perspective of the plant leaf temperature control instrument that is highly applicable in the embodiments of this application;

[0023] Figure 3 This is an exploded structural diagram of a plant leaf temperature control instrument that is widely applicable in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the structure of the visual cover of the plant leaf temperature control instrument with wide applicability in the embodiments of this application when it is opened;

[0025] Figure 5 This is a cross-sectional schematic diagram of a plant leaf temperature control instrument with strong applicability in the embodiments of this application;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Frame; 11. Base; 111. First outer surface; 112. Mounting slot; 12. Outer casing; 1211. First ventilation hole; 1212. Second ventilation hole; 1213. Protective net; 122. Handle; 123. Tripod mounting base; 2. Cooling plate; 21. Temperature sensor; 211. Wire; 212. Toggle switch; 3. Visible cover; 31. Damping hinge; 4. Semiconductor cooling chip; 5. Radiator; 6. Cooling fan; 7. Thermostat; 81. Terminal block; 82. Relay; 9. Switch assembly. Detailed Implementation

[0028] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this utility model.

[0030] Please see Figures 1 to 5 This embodiment provides a highly applicable plant leaf temperature control instrument, which includes: a frame 1, a cooling plate 2, a viewing cover 3, a semiconductor cooling chip 4, a heat sink 5, a cooling fan 6, a temperature detector, a voltage regulator, and a temperature controller 7.

[0031] The frame 1 has a square shape and a first outer surface 111 facing outward. The cooling plate 2 is disposed in the first outer surface 111. The temperature sensor is used to detect the temperature of the cooling plate 2. In this embodiment, the temperature detector 21 is connected to the frame 1 via a wire 211. The temperature detector is equipped with a toggle switch 212. The temperature detector connected by the wire can be used flexibly. When needed, the toggle switch can be used to connect the temperature detector, which can detect the temperature change at any point on the plant leaf. This eliminates the limitation of the fixed-point temperature change of the built-in sensor, realizes comprehensive detection of the plant leaf temperature, ensures the accuracy of experimental research, and can also detect the temperature of the cooling plate to ensure that the temperature is sufficient for cooling.

[0032] The visible cover 3 is hinged to the first outer surface 111, allowing it to rotate relative to the frame 1. The visible cover 3 can rotate to a position that fits against the first outer surface 111, thus clamping the plant leaves together with the cooling plate 2, securing them. The temperature of the plant leaves changes with the temperature of the cooling plate 2. Because the visible cover 3 is transparent, the user can directly observe the changes in the plant leaves with temperature from the outside, which is very intuitive. In this embodiment, the visible cover 3 is a transparent acrylic cover; however, in other embodiments, the visible cover 3 can also be other transparent plate-like structures.

[0033] In this embodiment, the thermoelectric cooler 4, heat sink 5, cooling fan 6, and temperature controller 7 are all housed within the frame 1. The thermoelectric cooler 4 is used to cool the cooling plate 2 and has advantages such as no mechanical movement, small size, compact structure, rapid cooling, precise temperature control, high reliability, and simple maintenance. Specifically, the cold side of the thermoelectric cooler 4 is attached to the cooling plate 2, and the hot side of the thermoelectric cooler 4 is attached to the heat sink 5. The cooling fan 6 is used to dissipate heat from the heat sink 5. The cooling fan 6 can blow natural air towards the heat sink 5, thereby allowing the heat sink 5 to carry away the heat from the hot side of the thermoelectric cooler 4, ensuring that the thermoelectric cooler 4 is in normal working condition. The voltage regulator (not shown) is mounted on the frame 1. When using a battery for power supply in the field, voltage fluctuations during use affect the temperature fluctuations of the cooling plate, thus impacting the experimental results. The voltage regulator provides a stable output voltage from the battery, eliminating temperature fluctuations in the cooling plate. The temperature controller 7 is electrically connected to the thermoelectric cooler 4, the temperature sensor, and the voltage regulator. The temperature controller 7 adjusts the operating state of the thermoelectric cooler 4 based on the signal from the temperature sensor, ensuring the cooling plate 2 reaches the required temperature. Preferably, this embodiment of the plant leaf temperature control instrument also includes a terminal block 81 and a relay 82. The terminal block 81 is mounted on the outer casing 12 and electrically connected to the voltage regulator. The relay 82 is electrically connected between the temperature controller 7 and the voltage regulator. The terminal block 81 can be electrically connected to an external power source. Electrical energy is transmitted to the temperature controller 7, the thermoelectric cooler 4, and the temperature sensor after passing through the voltage regulator and the relay 82. The terminal block is used to connect to an external power source (battery), and the relay acts as a control circuit.

[0034] This plant and leaf temperature control instrument allows users to effectively select the degree of temperature change as needed, achieving a temperature 15 degrees Celsius lower than the ambient temperature in as little as 2 minutes. Such rapid temperature changes negatively impact plant leaf growth. This instrument provides the climatic conditions necessary for studying the cold tolerance of plant leaves, enabling research to be conducted anytime without waiting for specific weather conditions.

[0035] The main function of the plant leaf temperature control instrument in this application is to maintain the rapid temperature change of the cooling plate 2, thereby causing the temperature of the plant leaves placed between the cooling plate 2 and the visible cover plate 3 to change rapidly, and then to conduct relevant cold resistance studies on the plant leaves after the rapid temperature change.

[0036] The plant leaf temperature control instrument of this application has the advantages of small size, high portability and low cost because it uses semiconductor cooling chip 4 for cooling. It is also convenient to observe plant leaves. After the plant leaves are placed, they can be observed directly without any other operation by the user. At the same time, the temperature detection of plant leaves is more comprehensive, the power supply is more stable when used outdoors, and it has strong applicability.

[0037] Preferably, the frame 1 in this embodiment includes a base 11 and an outer casing 12. The first outer surface 111 is one side of the base 11. The base 11 is provided with a mounting groove 112 for accommodating the cooling plate 2. The cooling plate 2 is disposed in the mounting groove 112, which is convenient for fixing and has a sturdy structure. The outer casing 12 is connected to the base 11 to cover the radiator 5, the cooling fan 6, and the temperature controller 7. The display panel of the temperature controller 7 is exposed on the outer casing 12. The outer casing 12 is provided with heat dissipation holes for convenient ventilation and heat dissipation. Specifically, the heat dissipation holes in this embodiment include a first ventilation hole 1211 facing the cooling fan 6 and a second ventilation hole 1212 facing the radiator 5. A protective net 1213 is installed on the first ventilation hole 1211 to prevent the user from being scratched by the blades of the cooling fan 6, thus providing protection.

[0038] Preferably, the visible cover 3 is hinged to the first outer surface 111 via a damping hinge 31. The damping hinge 31 provides a certain damping force when the visible cover 3 rotates, allowing for more stable clamping of plant leaves. The damping hinge 31 can open the visible cover 3 to any angle between 0 and 90 degrees depending on the size of the plant leaves.

[0039] Preferably, the outer casing 12 is also provided with a handle 122 for easy lifting and carrying by the user.

[0040] Preferably, the outer casing 12 of this embodiment is further provided with a tripod mounting base 123. The tripod mounting base 123 can be connected to an external tripod, which is convenient for outdoor use to support the study of living plant leaves, avoiding the limitation of only being able to conduct laboratory research.

[0041] Preferably, the plant leaf temperature control instrument in this embodiment further includes a switch assembly 9, which is disposed on the outer casing 12 and electrically connected to the temperature controller 7. The operation of the entire machine is controlled by operating the switch assembly 9.

[0042] Preferably, when the visible cover 3 is rotated to a position that fits against the first outer surface 111, there is a gap between the visible cover 3 and the cooling plate 2 to accommodate plant leaves. This arrangement facilitates the placement of plant leaves.

[0043] Specifically, in this embodiment, there are two of each of the semiconductor cooling chip 4, heat sink 5, and cooling fan 6, which improves the cooling efficiency.

[0044] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A versatile plant leaf temperature control instrument, characterized in that, include: Rack, cooling plate, viewing cover, thermoelectric cooler, heat sink, cooling fan, temperature detector, voltage regulator, terminal block, relay and temperature controller; The frame has a first outer surface facing outward, the cooling plate is disposed in the first outer surface, the visible cover is hinged to the first outer surface, and the visible cover can be rotated to a position that fits against the first outer surface so as to clamp the plant leaves together with the cooling plate; The thermoelectric cooler, heat sink, cooling fan, and temperature controller are all housed within the frame. The cold side of the thermoelectric cooler is attached to the cooling plate, and the hot side of the thermoelectric cooler is attached to the heat sink. The cooling fan dissipates heat from the heat sink. The temperature sensor is connected to the frame via wires and has a toggle switch. The voltage regulator is mounted on the frame. The temperature controller is electrically connected to the thermoelectric cooler, the temperature sensor, and the voltage regulator. A terminal block is located on the frame and electrically connected to the voltage regulator. A relay is electrically connected between the temperature controller and the voltage regulator.

2. The plant leaf temperature control instrument with strong applicability according to claim 1, characterized in that: The frame includes a base and an outer casing. The first outer surface is one side of the base. The base is provided with a mounting groove to accommodate the cooling plate. The outer casing is connected to the base to cover the radiator, cooling fan and temperature controller. The outer casing is provided with heat dissipation holes.

3. The plant leaf temperature control instrument with strong applicability according to claim 2, characterized in that: The outer casing is also equipped with a handle and a tripod mounting base.

4. The plant leaf temperature control instrument with strong applicability according to claim 2, characterized in that: The heat dissipation holes include a first ventilation hole facing the cooling fan and a second ventilation hole facing the radiator, and a protective net is installed on the first ventilation hole.

5. The plant leaf temperature control instrument with strong applicability according to claim 2, characterized in that: It also includes a switch assembly, which is disposed in the outer casing and electrically connected to the thermostat.

6. The plant leaf temperature control instrument with strong applicability according to any one of claims 1-5, characterized in that: The visible cover is hinged to the first outer surface via a damping hinge. When the visible cover is rotated to a position that fits against the first outer surface, there is a gap between the visible cover and the cooling plate to accommodate plant leaves.

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