Ice bath experiment device capable of storing cold

Abstract

The utility model provides an ice bath experiment device capable of storing cold, which comprises a reaction vessel, a phase change module arranged on the outer side of the reaction vessel, a phase change substance arranged in the phase change module, a temperature sensor arranged in the phase change module, a refrigeration module comprising a semiconductor refrigeration sheet and a heat dissipation mechanism, one side of the semiconductor refrigeration sheet being a cold end, and the other side of the semiconductor refrigeration sheet being a hot end. The cold end of the semiconductor chilling plate is attached to the outer side of the phase change module, the heat dissipation mechanism is arranged at the hot end of the semiconductor chilling plate, the stirring module is arranged below the reaction vessel, the stirring module is a magnetic stirrer, and the control module is electrically connected with the refrigeration module, the stirring module and the temperature sensor. Starting and stopping of the stirring module are controlled, and starting and stopping of the refrigeration module are controlled according to the temperature in the phase change module. The temperature of the phase change module is controlled by the temperature sensor and the control module, so that the reaction temperature is maintained near the phase change temperature of the phase change material, and the reaction temperature is controlled accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of ice bath experimental devices, and provides an ice bath experimental device capable of storing cold. Background Art

[0002] At present, in the field of biochemistry, some scientific research experiments need to be carried out in a low-temperature environment. For such experiments, the ice bath method is often used, but the traditional ice bath device has problems such as low temperature control accuracy, slow cooling speed, inconvenient operation and easy sample contamination. Therefore, there is an urgent need to design a new type of ice bath experimental device with high temperature control accuracy, fast cooling speed, simple operation, energy conservation and environmental protection, and automatic control. Content of the Utility Model

[0003] In order to solve the problems existing in the prior art, the utility model provides an ice bath experimental device capable of storing cold, including:

[0004] A reaction vessel;

[0005] A phase change module, which is arranged outside the reaction vessel, a phase change material is arranged in the phase change module, and a temperature sensor is arranged in the phase change module;

[0006] A refrigeration module, the refrigeration module includes a thermoelectric cooler and a heat dissipation module, one side of the thermoelectric cooler is the cold end, and the other side is the hot end. The cold end of the thermoelectric cooler is attached to the outside of the phase change module, and the heat dissipation module is arranged at the hot end of the thermoelectric cooler;

[0007] A stirring module, which is arranged below the reaction vessel and is a magnetic stirrer;

[0008] A control module, which is electrically connected to the refrigeration module, the stirring module and the temperature sensor respectively, controls the start and stop of the stirring module, and controls the start and stop of the refrigeration module according to the temperature in the phase change module.

[0009] Specifically, the reaction vessel, the phase change module and the refrigeration module are arranged in a frame, the stirring module and the control module are arranged in a base, and the frame is arranged above the base.

[0010] Specifically, a heat preservation layer is arranged in the frame, the heat preservation layer is arranged outside the phase change module, and the refrigeration module is arranged in the heat preservation layer.

[0011] Specifically, a detachable heat preservation cover is arranged above the frame.

[0012] Specifically, the phase change module includes a cold storage box and a phase change material arranged in the cold storage box.

[0013] Specifically, the heat dissipation module includes a heat sink and a cooling fan. One side of the heat sink is attached to the hot end of the thermoelectric cooler, and a cooling fan is arranged on the other side of the heat sink.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model designs a phase change module and a refrigeration module, uses a phase change material for cold storage, and uses a thermoelectric cooler to cool the phase change module. The temperature of the phase change module is controlled by a temperature sensor and a control module, so that the reaction temperature is maintained near the phase change temperature of the phase change material, and only a small fluctuation will occur, ensuring that the reaction process is carried out within the set temperature range, and the reaction temperature is accurately controlled.

[0016] 2. The present utility model is provided with a magnetic stirrer below the reaction vessel, which automatically stirs the reaction vessel and can stir the reaction vessel in a sealed state, solving the problem of easy sample contamination during the stirring process in the prior art. Description of the Drawings

[0017] Figure 1 is a structural sectional view of the present utility model;

[0018] Figure 2 is a schematic diagram of the refrigeration structure of the present utility model.

[0019] Reference numerals: 1, base; 2, reaction vessel; 3, phase change module; 4, refrigeration module; 5, stirring module; 6, control module; 7, heat preservation cover; 8, heat preservation board; 9, temperature sensor; 10, frame; 11, thermoelectric cooler; 12, heat sink; 13, cooling fan; 14, heat preservation layer. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. The following describes the specific implementation of the present utility model in detail in conjunction with specific embodiments.

[0021] As Figure 1 and Figure 2 shown, the present utility model provides a cold storage ice bath experiment device, which includes a base 1 and a frame 10 arranged on the base 1. A heat preservation layer 14, a refrigeration module 4, a phase change module 3 and a reaction vessel 2 are arranged in the frame 10. A stirring module 5 and a control module 6 are arranged in the base 1, and the stirring module 5 is arranged below the reaction vessel 2.

[0022] The reaction vessel 2 is arranged at the center of the frame 10, and the phase change module 3 is arranged outside the reaction vessel 2. The phase change module 3 includes a cold storage box and a phase change material arranged in the cold storage box. During the phase change process of the phase change material, its temperature remains almost unchanged, forming a wide temperature platform, so that the phase change material is maintained at the phase change temperature to achieve the purpose of cold storage. The phase change material can be selected according to the ice bath reaction temperature. According to different reaction temperature requirements, the phase change temperature is changed by adjusting the type and concentration of the phase change material, and the temperature of the ice bath is controlled, so that the reaction temperature can be accurately controlled to ensure that the reaction process is carried out within the set temperature range.

[0023] A heat insulation layer 14 is arranged in the frame 10, and the heat insulation layer 14 is arranged outside the phase change module 3. A plurality of refrigeration modules 4 are arranged in the heat insulation layer 14. The refrigeration module 4 includes a semiconductor refrigeration sheet 11 and a heat dissipation module. The semiconductor refrigeration sheet 11 has a fast cooling speed. The semiconductor refrigeration sheet 11 is composed of an N-type semiconductor material and a P-type semiconductor material. When an electric current passes through the thermocouple composed of these two semiconductor materials, heat will be transferred between the two ends, transferred from one end to the other end, generating a temperature difference to form one side as the cold end and the other side as the hot end. The cold end of the semiconductor refrigeration sheet 11 is attached to the outside of the phase change module 3, and the heat dissipation module is arranged at the hot end of the semiconductor refrigeration sheet 11. The heat dissipation module includes a heat sink 12 and a heat dissipation fan 13. One side of the heat sink 12 is attached to the hot end of the semiconductor refrigeration sheet 11, and the other side of the heat sink 12 is provided with the heat dissipation fan 13. The heat sink 12 is in contact with the semiconductor refrigeration sheet 11 for heat conduction, increasing the heat dissipation area to cool the hot end of the semiconductor refrigeration sheet 11, and the heat dissipation fan 13 accelerates the air flow rate to help the heat sink 12 dissipate heat quickly.

[0024] A temperature sensor 9 is arranged in the cold storage box. The temperature sensor 9 can be one or more, and is used to measure the temperature in the phase change module 3. The temperature sensor 9 and the refrigeration module 4 are electrically connected to the control module 6. A preset temperature is set in the control module 6, and the preset temperature is the phase change temperature of the phase change material. When the temperature sensor 9 measures that the temperature in the phase change module 3 is greater than the preset temperature, that is, the phase change material is completely melted, the control module 6 starts the refrigeration module 4, and the semiconductor refrigeration sheet 11 cools to cool the phase change module 3, and the phase change module 3 changes from a liquid state to a solid state. When the temperature sensor 9 measures that the temperature in the phase change module 3 is less than the preset temperature, that is, the phase change material is completely solidified and the cold storage is complete, the control module 6 stops the refrigeration module 4, so that the reaction temperature in the reaction vessel 2 is always maintained near the phase change temperature, only generating a small fluctuation, ensuring that the reaction process is carried out within the set temperature range, and realizing the precise control of the reaction temperature.

[0025] At the bottom of the reaction vessel 2, a stirring module 5 is provided. The stirring module 5 is a magnetic stirrer. A magnetic stir bar is placed at the bottom of the reaction vessel 2 to stir the reaction vessel 2. The magnetic stirrer is electrically connected to the control module 6 to control the start / stop and stirring speed of the magnetic stirrer.

[0026] A heat preservation plate 8 is provided below the magnet of the magnetic stirrer; a detachable heat preservation cover 7 is provided above the frame 10. After adding the experimental raw materials into the reaction vessel 2, the heat preservation cover 7 is covered to seal the reaction vessel 2. The heat preservation plate 8, the heat preservation layer 14 and the heat preservation cover 7 are made of polyurethane foam to block the heat transfer between the internal environment and the outside, reduce energy consumption, and save energy and protect the environment.

[0027] During use, add the experimental raw materials into the reaction vessel 2, cover the heat preservation cover 7 to seal the reaction vessel 2, turn on the power supply, set the phase change temperature and stirring rate through the control module 6. The semiconductor refrigeration chip 11 starts to refrigerate, the cold end of the semiconductor refrigeration chip 11 cools down, and the heat at the hot end is conducted into the heat sink 12. The cooling fan 13 starts to help the heat sink 12 dissipate heat. When the temperature inside the temperature sensor 9 is lower than the preset temperature, the semiconductor refrigeration chip 11 stops cooling. When the temperature sensor 9 measures that the temperature in the phase change module 3 is greater than the preset temperature, the control module 6 starts the refrigeration module 4, and the semiconductor refrigeration chip 11 refrigerates to cool the phase change module 3, realizing precise control of the experimental temperature.

[0028] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An ice bath experimental device capable of storing cold, characterized in that: include: A reaction vessel (2); A phase change module (3), wherein the phase change module (3) is arranged outside the reaction vessel (2), a phase change material is arranged inside the phase change module (3), and a temperature sensor (9) is arranged in the phase change module (3); A refrigeration module (4), the refrigeration module (4) comprising a semiconductor refrigeration sheet (11) and a heat dissipation module, one side of the semiconductor refrigeration sheet (11) being a cold end and the other side being a hot end, the cold end of the semiconductor refrigeration sheet (11) being attached to the outside of the phase change module (3), and the heat dissipation module being arranged at the hot end of the semiconductor refrigeration sheet (11); A stirring module (5), which is arranged below the reaction vessel (2) and is a magnetic stirrer; A control module (6), wherein the control module (6) is electrically connected to the refrigeration module (4), the stirring module (5) and the temperature sensor (9) respectively, controls the start and stop of the stirring module (5), and controls the start and stop of the refrigeration module (4) according to the temperature in the phase change module (3).

2. The ice bath experimental device capable of storing cold according to claim 1, characterized in that: The reaction vessel (2), phase change module (3) and refrigeration module (4) are arranged in a frame (10), the stirring module (5) and control module (6) are arranged in a base (1), and the frame (10) is arranged above the base (1).

3. The ice bath experimental device capable of storing cold according to claim 2, characterized in that: A heat-insulating layer (14) is arranged in the frame (10), the heat-insulating layer (14) is arranged outside the phase change module (3), and a refrigeration module (4) is arranged in the heat-insulating layer (14).

4. The ice bath experimental device capable of storing cold according to claim 2, characterized in that: A detachable heat-insulating cover (7) is arranged above the frame (10).

5. The ice bath experimental device capable of storing cold according to claim 1, characterized in that: The phase change module (3) comprises a cold storage box and a phase change material arranged in the cold storage box.

6. The ice bath experimental device capable of storing cold according to claim 1, characterized in that: The heat dissipation module comprises a heat sink (12) and a heat dissipation fan (13); one side of the heat sink (12) is attached to the hot end of the semiconductor cooling sheet (11); and the other side of the heat sink (12) is provided with a heat dissipation fan (13).

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