A plant leaf cold tolerance research temperature control instrument

Abstract

The utility model relates to a kind of plant leaf cold resistance research temperature control instrument, it includes: rack, cooling plate, visual cover, semiconductor refrigeration sheet, radiator, cooling fan and temperature controller;Rack has the first outer surface towards outside, cooling plate is set in the first outer surface, temperature sensor is set on cooling plate, visual cover is hinged to the first outer surface, visual cover can be rotated to the position of being adhered to the first outer surface, to be clamped with cooling plate together with plant leaf;Semiconductor refrigeration sheet, radiator, cooling fan and temperature controller are all set in rack, the cold face of semiconductor refrigeration sheet is adhered to cooling plate, the hot face of semiconductor refrigeration sheet is adhered to radiator, temperature controller is electrically connected to semiconductor refrigeration sheet and temperature sensor.The plant leaf cold resistance research temperature control instrument of the application is refrigerated using semiconductor refrigeration sheet, it has the advantages such as small volume, high portability, cheap cost, and plant leaf observation is convenient, plant leaf is placed after without other operation of user can intuitive observation plant leaf.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor refrigeration technology, and in particular to a temperature control instrument for studying the cold resistance of 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 the current technology, experimental equipment for studying the cold resistance of plant leaves mainly relies on imported products. These devices generally 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: the use of compressor refrigeration or liquid nitrogen-assisted cooling results in a large overall size, poor portability, and high cost. Furthermore, sample observation is inconvenient, requiring frequent opening of the refrigeration chamber to observe 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 temperature control instrument for studying the cold resistance of plant leaves.

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

[0006] A temperature control instrument for studying the cold resistance of plant leaves, comprising:

[0007] Rack, cooling plate, viewing cover, thermoelectric cooling chip, heat sink, cooling fan and temperature controller;

[0008] The frame has a first outer surface facing outward, the cooling plate is disposed in the first outer surface, the cooling plate is provided with a temperature sensor, 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, and the temperature controller is electrically connected to the thermoelectric cooler and the temperature sensor.

[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 temperature control instrument for studying the cold resistance of plant leaves also includes a wiring terminal and a relay. The wiring terminal is disposed on the outer casing and electrically connected to the relay, and the relay is electrically connected to the temperature controller.

[0016] As one embodiment, the temperature control instrument for studying the cold resistance of plant leaves 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 temperature control instrument for studying the cold resistance of plant leaves in this application has advantages such as small size, high portability, and low cost due to the use of semiconductor cooling chips for cooling. In addition, it is convenient to observe plant leaves, and the plant leaves can be observed directly without any other operation by the user after they are placed.

[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 temperature control instrument for studying the cold resistance of plant leaves in this embodiment of the application.

[0022] Figure 2This is a schematic diagram of the temperature control instrument for studying the cold resistance of plant leaves in the embodiments of this application from another perspective;

[0023] Figure 3 This is a schematic diagram of the exploded structure of the temperature control instrument for studying the cold resistance of plant leaves in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the structure of the temperature control instrument for studying the cold resistance of plant leaves in this application when the visible cover is opened;

[0025] Figure 5 This is a cross-sectional schematic diagram of the temperature control instrument used for studying the cold resistance of plant leaves 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; 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 temperature control instrument for studying the cold resistance of plant leaves, which includes: a frame 1, a cooling plate 2, a viewing cover 3, a semiconductor cooling chip 4, a radiator 5, a cooling fan 6, 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. A temperature sensor 21 is disposed on the cooling plate 2. The temperature sensor 21 is used to detect the temperature of the cooling plate 2. In this embodiment, the temperature sensor 21 is disposed in the middle of the cooling plate 2.

[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 is attached to the heat sink 5. The cooling fan 6 dissipates heat from the heat sink 5 by blowing natural air onto it, allowing the heat sink 5 to remove heat from the hot side of the thermoelectric cooler 4, ensuring the thermoelectric cooler 4 operates normally. The temperature controller 7 is electrically connected to the thermoelectric cooler 4 and the temperature sensor 21. The temperature controller 7 determines the operating state of the thermoelectric cooler 4 based on the signal from the temperature sensor 21, ensuring the cooling plate 2 reaches the required temperature.

[0034] This application presents a temperature control instrument for studying the cold tolerance of plant leaves. Users can 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. Rapid temperature changes can negatively impact plant leaf growth. This instrument provides the climatic conditions necessary for studying the cold tolerance of plant leaves, allowing research to be conducted at any time without waiting for specific weather conditions to occur.

[0035] The temperature control instrument for studying the cold resistance of plant leaves in this application mainly functions 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 conduct relevant cold resistance studies on the plant leaves after the rapid temperature change.

[0036] The temperature control instrument for studying the cold resistance of plant leaves in this application uses a semiconductor refrigeration chip 4 for cooling, which has the advantages of small size, high portability, and low cost. In addition, it is convenient to observe plant leaves. After the plant leaves are placed, they can be observed directly without any other operation by the user.

[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 temperature control instrument for studying the cold resistance of plant leaves in this embodiment further includes a terminal block 81 and a relay 82. The terminal block 81 is disposed on the outer casing 12 and electrically connected to the relay 82. The relay 82 is electrically connected to the temperature controller 7. The terminal block 81 can be electrically connected to an external power source. Electrical energy is transmitted to the temperature controller 7, the semiconductor cooling chip 4, and the temperature sensor 21 through the relay 82.

[0042] Preferably, the temperature control instrument for studying the cold resistance of plant leaves 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.

[0043] 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.

[0044] Specifically, in this embodiment, two semiconductor cooling chips 4, two heat sinks 5, and two cooling fans 6 are provided to improve cooling efficiency.

[0045] 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 temperature control instrument for studying the cold resistance of plant leaves, characterized in that, include: Rack, cooling plate, viewing cover, thermoelectric cooling chip, heat sink, cooling fan and temperature controller; The frame has a first outer surface facing outward, the cooling plate is disposed in the first outer surface, the cooling plate is provided with a temperature sensor, 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 is used to dissipate heat from the heat sink, and the temperature controller is electrically connected to the thermoelectric cooler and the temperature sensor.

2. The temperature control instrument for studying the cold resistance of plant leaves 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 temperature control instrument for studying the cold resistance of plant leaves according to claim 1, characterized in that: The visible cover is hinged to the first outer surface via a damping hinge.

4. The temperature control instrument for studying the cold resistance of plant leaves according to claim 2, characterized in that: The outer casing is also equipped with a handle.

5. The temperature control instrument for studying the cold resistance of plant leaves according to claim 2, characterized in that: The outer casing is also equipped with a tripod mounting base.

6. The temperature control instrument for studying the cold resistance of plant leaves 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.

7. The temperature control instrument for studying the cold resistance of plant leaves according to claim 2, characterized in that: It also includes a wiring terminal and a relay, wherein the wiring terminal is disposed on the outer casing and electrically connected to the relay, and the relay is electrically connected to the thermostat.

8. The temperature control instrument for studying the cold resistance of plant leaves 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.

9. The temperature control instrument for studying the cold resistance of plant leaves according to any one of claims 1-8, characterized in that: 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.

10. The temperature control instrument for studying the cold resistance of plant leaves according to claim 9, characterized in that: The semiconductor cooling chip, heat sink, and cooling fan are all configured in pairs.

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