A temperature controllable heating device

Abstract

The utility model relates to experimental equipment technical field especially relates to a temperature controllable heating device, including the outer cover, the inside fixed mounting of outer cover has the support, and the side surface installation of support has the heat dissipation subassembly, and the upper surface fixed mounting of support has the pressing plate, and the inside fixed connection of pressing plate has the heating film, and in the inside fixed mounting of pressing plate has the heating block that sticks to the heating film upper surface, and the inside setting of heating block has thermistor and thermosensitive switch, and the upper surface mounting of outer cover has the cover plate for heating block position fixed. The utility model discloses through setting up the thermistor in heating block, can real -time monitoring measurement heating block's real -time temperature, to realize the temperature control of heating block. Simultaneously install thermosensitive switch in heating block, when temperature exceeds the temperature upper limit of thermosensitive switch, and thermosensitive switch will physically disconnect the power of heating film, prevent heating block overheating, protect the user.

Description

Technical Field

[0001] This application relates to the field of experimental equipment technology, and more specifically, to a temperature-controllable heating device. Background Technology

[0002] In experiments or production processes in fields such as biology, chemistry, and medicine, it is often necessary to heat reagents at a constant temperature or with programmed temperature increases. This heating operation is fundamental to the successful execution of many critical reactions (such as PCR amplification, enzymatic digestion, sample digestion, or culture medium insulation), and the accuracy, uniformity, and stability of the temperature directly affect the reliability of experimental results or the quality of the product.

[0003] However, existing heating devices often have several problems. On the one hand, their temperature control accuracy is low and temperature uniformity is poor, making it difficult to meet the needs of reactions sensitive to temperature fluctuations and affecting the reproducibility and accuracy of experiments. On the other hand, most devices lack adequate overheat protection mechanisms, usually relying only on simple temperature controllers, which poses safety hazards. In addition, some devices have low heat dissipation efficiency, and the natural cooling time after completing high-temperature work is lengthy, severely limiting the efficiency and pace of experiments or production. At the same time, the risk of reagent leakage is also common during the heating process. Once corrosive or toxic reagents leak into the device, it can not only damage precision components but also potentially cause safety accidents.

[0004] Therefore, this utility model proposes a temperature-controllable heating device. This device provides dual protection through a built-in thermistor and thermistor switch, forming an autonomous closed-loop temperature control and independent physical protection. It integrates a highly efficient and symmetrical heat dissipation duct and sealing ring assembly, which significantly improves heat dissipation efficiency and leakage prevention capability. It effectively solves the problems of low temperature control accuracy, slow heat dissipation, and leakage risks in the prior art. It has high safety, high reliability, and convenience, and is suitable for heating scenarios of temperature-sensitive biological, chemical, and medical reagents. Utility Model Content

[0005] To achieve the above objectives, this utility model proposes a temperature-controllable heating device, including an outer cover, a bracket fixedly installed inside the outer cover, a heat dissipation component installed on the side of the bracket, a pressure plate fixedly installed on the upper surface of the bracket, a heating film fixedly connected inside the pressure plate, and a heating block fixedly installed inside the pressure plate, which is in close contact with the upper surface of the heating film. The heating block is equipped with a thermistor and a thermal switch. A cover plate for fixing the position of the heating block is installed on the upper surface of the outer cover.

[0006] In one example, the pressure plate is concave, and its perimeter is fixedly connected to the outer cover by bolts.

[0007] In one example, the heat dissipation assembly includes a cooling fan fixedly mounted on the side of the bracket, and heat dissipation holes are provided on both sides of the outer casing.

[0008] In one example, the inner bottom wall of the pressure plate has an installation opening, and an installation plate is fixedly connected to the inner wall of the installation opening. Heat dissipation fins are fixedly connected to the installation plate, and the position of the heat dissipation fins corresponds to the position of the cooling fan.

[0009] In one example, the lower surface of the heating film overlaps with the upper surface of the heat dissipation fins.

[0010] In one example, the cover plate is fixedly connected to the outer cover by bolts, and the lower surface of the cover plate overlaps with the upper surface of the heating block.

[0011] In one example, a sealing groove is provided on the upper surface of the heating block, and a sealing ring is provided inside the sealing groove. The lower surface of the cover plate abuts against the surface of the sealing ring.

[0012] In one example, several membrane strip boxes are placed on the upper surface of the heating block.

[0013] The temperature-controllable heating device proposed in this utility model can bring the following beneficial effects: 1. This utility model, by installing a thermistor inside the heating block, can monitor and measure the real-time temperature of the heating block to achieve temperature control. Simultaneously, a thermal switch is installed inside the heating block; when the temperature exceeds the thermal switch's upper temperature limit, the thermal switch will physically disconnect the power supply to the heating film to prevent overheating and protect the user.

[0014] 2. This invention significantly improves the heat dissipation efficiency and leakage prevention capability of the equipment by setting up symmetrical heat dissipation channels and a reliable sealing structure. The cooling fan and heat dissipation fins work together to quickly and actively force-cool the heating block, shortening the equipment cooling time and improving experimental efficiency. In addition, the sealing ring forms a sealing barrier between the heating block and the pressure plate, which effectively prevents reagent leakage or splashing into the device, protecting the internal heating elements, heat dissipation structure and circuitry, extending the service life of the equipment, and ensuring a clean and safe experimental environment.

[0015] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0017] Figure 1 This is a three-dimensional structural diagram of a temperature-controllable heating device; Figure 2 This is a schematic diagram of the exploded structure of a temperature-controllable heating device. Figure 3 This is a schematic diagram of the internal structure of a temperature-controllable heating device. Figure 4 A temperature-controllable heating device Figure 3 Enlarged structural diagram at point A in the middle.

[0018] Icons: 1. Outer cover; 2. Bracket; 3. Cooling fan; 4. Heat dissipation hole; 5. Pressure plate; 6. Heat dissipation fins; 7. Heating film; 8. Heating block; 9. Thermistor; 10. Thermistor switch; 11. Cover plate; 12. Membrane strip box; 13. Sealing ring. Detailed Implementation

[0019] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0020] like Figures 1 to 4 As shown, this utility model proposes a temperature-controllable heating device, including an outer cover 1. A bracket 2 is fixedly installed inside the outer cover 1 by bolts. The bracket 2 is symmetrically distributed on both sides inside the outer cover 1 for support. A cooling fan 3 for heat dissipation is installed on the side of the bracket 2, and heat dissipation holes 4 for ventilation are opened on both sides of the outer cover 1. A pressure plate 5 is installed on the upper surface of the bracket 2.

[0021] The pressure plate 5 is square in shape, and all four sides of the pressure plate 5 are raised, making the pressure plate 5 concave. The raised parts are fixedly connected to the outer cover 1 by bolts. An installation hole is opened on the inner bottom wall of the pressure plate 5. An installation plate is fixedly connected to the inner wall of the installation hole. Heat dissipation fins 6 are fixedly connected to the opposite surfaces of the front and rear installation plates. The position of the heat dissipation fins 6 corresponds to the position of the cooling fan 3. The heat dissipation fins 6 can absorb heat and quickly dissipate heat through heat conversion by the ventilation of the cooling fan 3.

[0022] A heating film 7 is fixedly connected inside the pressure plate 5. The lower surface of the heating film 7 overlaps with the upper surface of the heat dissipation fins 6, and a heating block 8 installed inside the pressure plate 5 is attached to the upper surface of the heating film 7. A thermistor 9 is installed inside the heating block 8, which can monitor and measure the real-time temperature of the heating block 8 to achieve temperature control. At the same time, a thermal switch 10 is installed inside the heating block 8. When the temperature exceeds the upper temperature limit of the thermal switch 10, the thermal switch 10 will physically disconnect the power supply to the heating film 7 to prevent the heating block 8 from overheating and protect the user. When the temperature of the heating block 8 cools down to a certain temperature, the thermal switch 10 returns to the power-on state, and the heating film 7 can continue to work. The thermistor 9 is connected to a controller installed on the surface of the outer cover 1. By setting the heating temperature on the controller, the heat signal detected by the thermistor 9 is transmitted to the controller. The controller can change the heating frequency of the heating film 7 to achieve temperature control.

[0023] To ensure the heating block 8 is fixed, a cover plate 11 is bolted to the upper surface of the outer cover 1. The lower surface of the cover plate 11 overlaps with the upper surface of the heating block 8, and the cover plate 11 is fixedly connected to the outer cover 1 by bolts. The cover plate 11 blocks the heating block 8, which can ensure that the position of the heating block 8 is fixed.

[0024] Several membrane strip boxes 12 are placed on the upper surface of the heating block 8. The heating membrane 7 generates electricity, which is conducted through the heating block 8 and the membrane strip boxes 12 to heat the reagent. To prevent splashing or leakage from the inside of the membrane strip boxes 12 into the area below the heating block 8, a sealing groove is provided on the upper surface of the heating block 8. A sealing ring 13 is embedded in the sealing groove, which surrounds the heating block 8. The surface of the sealing ring 13 is in close contact with the lower surface of the pressure plate 5, thereby sealing the area between the pressure plate 5 and the heating block 8 and isolating the area below the heating block 8. In the event of reagent splashing or leakage, the reagent can be prevented from flowing into the interior of the device, thus protecting its interior.

[0025] Working principle: After the device is powered on, the heating film 7 starts to work and generate heat. The heat is quickly conducted to the heating block 8 that is closely attached to it. The heating block 8 evenly conducts the heat to the membrane strip box 12 placed on it, and stably heats the reagents inside the box. During the entire heating process, the thermistor 9 embedded in the heating block 8 monitors the temperature change in real time. If an abnormality occurs and the temperature runs out of control and exceeds the preset safety threshold, the thermal switch 10, as an independent physical safety element, will activate and directly cut off the power supply circuit of the heating film 7 to achieve forced power-off and provide absolutely reliable overheat protection. After the device cools down, the thermal switch 10 will automatically reset and the device can resume normal use.

[0026] When heat dissipation is required, the cooling fan 3 starts, drawing in cool air from the heat dissipation hole 4 on one side of the outer casing 1. The airflow flows through the heat dissipation fins 6 that are tightly connected to the heating block 8, and carries away the heat through forced convection. Finally, the hot air is discharged from the heat dissipation hole 4 on the other side, forming an efficient and symmetrical heat dissipation channel to achieve active cooling of the core components of the device.

[0027] In addition, the sealing barrier formed by the sealing ring 13 between the heating block 8 and the pressure plate 5 can effectively prevent reagents that may splash or leak from the membrane strip box 12 from flowing into the device, thereby protecting the internal electronic components and heat dissipation structure and ensuring the reliability and safety of the equipment in long-term operation.

[0028] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0029] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not 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 construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0031] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0032] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A temperature-controllable heating device, comprising an outer casing (1), characterized in that: A bracket (2) is fixedly installed inside the outer cover (1). A heat dissipation component is installed on the side of the bracket (2). A pressure plate (5) is fixedly installed on the upper surface of the bracket (2). A heating film (7) is fixedly connected inside the pressure plate (5). A heating block (8) is fixedly installed inside the pressure plate (5) and is in close contact with the upper surface of the heating film (7). A thermistor (9) and a thermal switch (10) are provided inside the heating block (8). A cover plate (11) for fixing the position of the heating block (8) is installed on the upper surface of the outer cover (1).

2. The temperature-controllable heating device according to claim 1, characterized in that: The pressure plate (5) is concave, and the pressure plate (5) is fixedly connected to the outer cover (1) by bolts around its perimeter.

3. The temperature-controllable heating device according to claim 1, characterized in that: The heat dissipation assembly includes a heat dissipation fan (3) fixedly installed on the side of the bracket (2), and heat dissipation holes (4) are provided on both sides of the outer cover (1).

4. The temperature-controllable heating device according to claim 3, characterized in that: The inner bottom wall of the pressure plate (5) is provided with an installation port, and an installation plate is fixedly connected to the inner wall of the installation port. Heat dissipation fins (6) are fixedly connected to the installation plate, and the position of the heat dissipation fins (6) corresponds to the position of the cooling fan (3).

5. The temperature-controllable heating device according to claim 4, characterized in that: The lower surface of the heating film (7) overlaps with the upper surface of the heat dissipation fins (6).

6. The temperature-controllable heating device according to claim 1, characterized in that: The cover plate (11) is fixedly connected to the outer cover (1) by bolts, and the lower surface of the cover plate (11) overlaps with the upper surface of the heating block (8).

7. The temperature-controllable heating device according to claim 6, characterized in that: The upper surface of the heating block (8) is provided with a sealing groove, and a sealing ring (13) is provided inside the sealing groove. The lower surface of the cover plate (11) is pressed against the surface of the sealing ring (13).

8. The temperature-controllable heating device according to claim 1, characterized in that: Several membrane strip boxes (12) are placed on the upper surface of the heating block.

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