Air-cooled heating circulation temperature control device

Abstract

This application discloses an air-cooled heating and circulating temperature control device, comprising: a cabinet; a system circulation pipeline installed inside the cabinet, the system circulation pipeline having a system outlet and a system inlet, a circulation pump installed on the system circulation pipeline, and a temperature sensor installed on the circulation pipeline near the system outlet; an electric heating tank connected to the system circulation pipeline, and the electric heating tank being located between the temperature sensor and the circulation pump; a buffer tank installed inside the cabinet and connected to the system circulation pipeline via a return pipe, used to accommodate the volume expansion of the heat transfer medium due to temperature changes, while stabilizing the system pressure; the system circulation pipeline having a heating branch and a cooling branch, a first solenoid valve installed on the heating branch, and a second solenoid valve and an air-cooling heat dissipation mechanism installed on the cooling branch. This application solves the problems of poor heat dissipation and large system pressure fluctuations caused by temperature changes in the heat transfer medium in existing devices on the market, which can easily damage the equipment.

Description

Technical Field

[0001] This application relates to an air-cooled heating and circulating temperature control device, belonging to the field of pharmaceutical equipment manufacturing technology. Background Technology

[0002] Air-cooled heating and circulating temperature control devices are important temperature control equipment widely used in chemical production and biopharmaceutical fields. Currently, there are various types of air-cooled heating and circulating temperature control devices on the market, but they all have certain limitations in terms of structure and performance.

[0003] Regarding heat dissipation, the design of some devices' air-cooled heat sinks is not optimized, and the structure and arrangement of the heat sink fins need improvement. For example, the heat transfer medium has a short residence time within the heat sink, resulting in poor heat dissipation. Simultaneously, some devices lack effective pressure regulation mechanisms. When the heat transfer medium expands or contracts due to temperature changes, the system pressure fluctuates significantly, easily damaging the equipment and affecting its lifespan and stability.

[0004] Therefore, the inventors proposed an air-cooled heating and circulating temperature control device that can effectively solve the above problems. Summary of the Invention

[0005] The purpose of this application is to provide a relatively compact structure that solves the problems of poor heat dissipation and large system pressure fluctuations caused by the expansion or contraction of the heat transfer medium due to temperature changes in current air-cooled heating and circulating temperature control devices, which can easily damage the equipment and affect its service life and stability.

[0006] The technical problem to be solved in this application is achieved by the following technical solution:

[0007] Air-cooled heating and circulating temperature control device, including:

[0008] Cabinet;

[0009] The system circulation pipeline is installed inside the cabinet, and the system circulation pipeline is provided with a system outlet and a system inlet. A circulation pump is installed on the system circulation pipeline, and a temperature sensor is installed on the circulation pipeline near the system outlet.

[0010] An electric heating tank is connected to the system circulation pipeline, and the electric heating tank is located between the temperature sensor and the circulation pump;

[0011] A buffer tank, installed inside the cabinet and connected to the system circulation pipeline via a return pipe, is used to accommodate the volume expansion of the heat transfer medium due to temperature changes, while stabilizing the system pressure.

[0012] The system's circulation pipeline is equipped with a heating branch and a cooling branch. A first solenoid valve is installed on the heating branch, and a second solenoid valve and an air-cooled heat dissipation mechanism are installed on the cooling branch.

[0013] When heating is required, the first solenoid valve opens, the second solenoid valve closes, and the electric heating tank opens to heat the heat transfer medium.

[0014] When cooling is required, the power of the electric heating tank is reduced, the first solenoid valve is closed, and the second solenoid valve and the air-cooling heat dissipation mechanism are opened to cool the heat transfer medium.

[0015] Preferably, the air-cooled heat dissipation mechanism includes:

[0016] The fan assembly is installed on one side of the cabinet.

[0017] The air-cooled radiator is connected to the fan assembly via a bracket, and the radiator is provided with an S-shaped flow channel to increase the residence time of the heat transfer medium in the air-cooled radiator.

[0018] Preferably, the air-cooled radiator includes:

[0019] The first heat dissipation pipe has an inlet end and an outlet end, and multiple first guide baffles are axially spaced on the first heat dissipation pipe. The first guide baffles are used to guide the flow direction of the heat transfer medium.

[0020] The second heat dissipation pipe has multiple second guide baffles axially spaced on it. The multiple second guide baffles and the multiple first guide baffles are spaced and staggered to form an S-shaped path, so that the heat transfer medium can flow and exchange heat fully in the radiator.

[0021] The heat sink has multiple fins, which are installed at equal intervals between the first heat sink and the second heat sink, and connect the first heat sink and the second heat sink. This equal-interval installation and connection method helps to dissipate heat evenly and improve heat dissipation efficiency.

[0022] Preferably, the fan assembly includes:

[0023] Mounting plate, fixed to the side wall of the cabinet;

[0024] A mesh cover bracket is fixedly connected to the mounting plate, and a mesh cover is fixedly connected to the mesh cover bracket.

[0025] The fan blades are mounted on the mesh cover bracket.

[0026] Preferably, the side wall of the cabinet is provided with an airflow channel to ensure that air flows in the cabinet under the action of the fan assembly, so as to cool down the heat transfer medium and other components in the cabinet at the same time.

[0027] Preferably, a gas-liquid separator is installed on the circulation pipeline, and an exhaust valve is installed on the gas-liquid separator. The gas-liquid separator is used to prevent cavitation and gas blockage of the circulation pump.

[0028] Preferably, a filter is installed on the circulation pipeline near the system inlet, the filter being used to filter impurities in the heat transfer medium.

[0029] Preferably, an electric heating rod is installed on the electric heating tank.

[0030] Preferably, a control cabinet is installed on the cabinet, and the PLC electrical control unit in the control cabinet is electrically connected to the temperature sensor, the first solenoid valve, the second solenoid valve, the electric heating rod, the fan blade, and the circulating pump.

[0031] The beneficial effects of this application are:

[0032] 1. This application uses a buffer tank installed inside the cabinet and connected to the system circulation pipeline via a return pipe to accommodate the volume expansion of the heat transfer medium due to temperature changes, while stabilizing the system pressure. When the temperature of the heat transfer medium in the system circulation pipeline is too high, the heat transfer medium expands due to heat and flows to the buffer tank through the return pipe. When the temperature in the system circulation pipeline decreases and the heat transfer medium in the system circulation pipeline is insufficient, the buffer tank replenishes the heat transfer medium to the system circulation pipeline through the return pipe.

[0033] 2. This application utilizes a temperature sensor to monitor temperature changes in real time throughout the entire operation process and feeds the data back to the PLC control unit. Based on temperature deviations, the PLC control unit activates or deactivates the heating or cooling branches, dynamically adjusting the power of the electric heating rods and the flow rate of the circulating pump, or the air-cooled heat dissipation mechanism on the cooling branch, ensuring the system temperature remains within the set range and achieving precise constant temperature control. Simultaneously, the buffer tank automatically adjusts the system pressure according to changes in the volume of the heat transfer medium within the system, ensuring stable system operation.

[0034] 3. This application uses a first heat dissipation pipe, which has an inlet end and an outlet end, and is connected to a cooling branch through the inlet end and the outlet end. Multiple first guide baffles are axially spaced on the first heat dissipation pipe to guide the flow direction of the heat transfer medium. A second heat dissipation pipe has multiple second guide baffles axially spaced on it. These second guide baffles are staggered with the multiple first guide baffles to form an S-shaped path, allowing the heat transfer medium to flow and exchange heat fully within the radiator. Multiple heat sinks are installed at equal intervals between the first heat dissipation pipe and the second heat dissipation pipe, connecting the two pipes. This equidistant installation and connection method helps to achieve uniform heat dissipation and improves heat dissipation efficiency. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural diagram of the present application;

[0036] Figure 2 This is a schematic diagram of the internal structure of this application;

[0037] Figure 3 This is a schematic diagram of the fan assembly structure of this application;

[0038] Figure 4 This is a three-dimensional structural diagram of the air-cooled heat sink of this application;

[0039] Figure 5 This is a cross-sectional view of the air-cooled heat sink of this application.

[0040] In the diagram: 1. Cabinet; 101. Support leg; 102. Airflow channel; 2. Control cabinet; 3. Air-cooled heat dissipation mechanism; 301. Mounting plate; 302. Mesh cover bracket; 303. Fan blade; 304. First heat dissipation pipe; 305. Second heat dissipation pipe; 306. Heat sink; 307. First guide partition; 308. Second guide partition; 4. System circulation pipeline; 401. System inlet; 402. System outlet; 403. Heating branch; 404. First solenoid valve; 405. Cooling branch; 406. Second solenoid valve; 5. Temperature sensor; 6. Filter; 7. Gas-liquid separator; 8. Circulation pump; 9. Electric heating tank; 10. Electric heating rod; 11. Buffer tank; 12. Return pipe. Detailed Implementation

[0041] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this application, the following description, in conjunction with specific illustrations, further elaborates on this application.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] The following disclosure provides numerous different embodiments or examples for implementing various structures of the embodiments of this application. To simplify the disclosure of the embodiments of this application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in the embodiments of this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0046] like Figures 1-5 As shown, the air-cooled heating and circulating temperature control device includes: cabinet 1, system circulation pipeline 4, electric heating tank 9, and buffer tank 11.

[0047] Support legs 101 are provided at the four corners of the bottom of the cabinet 1 to maintain a certain distance between the cabinet 1 and the ground. Multiple airflow channels 102 are provided on the side walls of the cabinet 1 to ensure rapid airflow within the cabinet 1 under the action of the fan assembly, cooling the heat transfer medium and other components within the cabinet 1 simultaneously. A control cabinet 2 is also installed on the cabinet 1. The control cabinet 2 is a Siemens PLC control cabinet 2 manufactured by Dongguan Xiangke Intelligent Control Equipment Co., Ltd., which contains a PLC control unit. Its specific structure, connection, and operating principle will not be detailed here.

[0048] The system circulation pipeline 4 is installed inside the cabinet 1, and the system circulation pipeline 4 is provided with a system outlet 402 and a system inlet 401. When using this device, it is connected to the target equipment through the flange structure of the system outlet 402 and the system inlet 401 to form a closed circulation pipeline. A circulation pump 8 is installed on the system circulation pipeline 4. The circulation pump 8 in this application is a high-temperature circulation magnetic pump, such as the RGZ-40E produced by Orank. A temperature sensor 5 is installed on the circulation pipeline near the system outlet 402. The temperature sensor 5 is electrically connected to the PLC control unit in the control cabinet 2. The temperature sensor 5 is used to detect the temperature of the heat transfer medium at the system outlet 402 and feeds back the temperature signal to the PLC control unit.

[0049] An electric heating tank 9 is connected to the system circulation pipeline 4, and the electric heating tank 9 is located between the temperature sensor 5 and the circulation pump 8. An electric heating rod 10 is installed on the electric heating tank 9, and the electric heating rod 10 is electrically connected to the PLC control unit in the control cabinet 2.

[0050] A buffer tank 11 is installed inside the cabinet 1 and connected to the system circulation pipeline 4 via a return pipe 12. It is used to accommodate the volume expansion of the heat transfer medium due to temperature changes and to stabilize the system pressure. When the temperature of the heat transfer medium in the system circulation pipeline 4 is too high, the heat transfer medium expands due to heat and flows to the buffer tank 11 through the return pipe 12. When the temperature in the system circulation pipeline 4 decreases and the heat transfer medium in the system circulation pipeline 4 is insufficient, the buffer tank 11 replenishes the heat transfer medium to the system circulation pipeline 4 through the return pipe 12.

[0051] The system circulation pipeline 4 is provided with a heating branch 403 and a cooling branch 405. A first solenoid valve 404 is installed on the heating branch 403, and a second solenoid valve 406 and a fan cooling mechanism 3 are installed on the cooling branch 405. The second solenoid valve 406 is used to open or close the channel of the cooling branch 405, and the fan cooling mechanism 3 is used to cool and dissipate heat from the heat transfer medium flowing through it. The first solenoid valve 404, the second solenoid valve 406, and the fan cooling mechanism are all electrically connected to the PLC control unit in the control cabinet 2.

[0052] When heating is required, the PLC control unit of control cabinet 2 receives a temperature signal from temperature sensor 5 that is lower than the preset value. The PLC control unit will send an opening command to the first solenoid valve 404, a closing command to the second solenoid valve 406, and an opening command to the electric heating rod 10 of the electric heating tank 9 to heat the heat transfer medium.

[0053] When cooling is required, if the temperature detected by temperature sensor 5 is higher than the preset value, the PLC control unit of control cabinet 2 receives the signal and sends a command to the electric heating rod 10 to reduce the power. On the other hand, it sends a command to the first solenoid valve 404 to close and a command to the second solenoid valve 406 and the air-cooled heat dissipation mechanism 3 to open, thereby cooling the heat transfer medium passing through the heat dissipation mechanism. The cooled heat transfer medium returns to the electric heating tank 9 through the pipeline and mixes with the heat transfer medium in the electric heating tank 9, thereby reducing the heat transfer medium at the system outlet 402 to a suitable temperature range.

[0054] Throughout the operation, temperature sensor 5 monitors temperature changes in real time and feeds the data back to the PLC control unit. Based on the temperature deviation, the PLC control unit opens or closes the heating branch 403 or the cooling branch 405, dynamically adjusting the power of the electric heating rod 10 and the flow rate of the circulating pump 8, or the air-cooled heat dissipation mechanism 3 on the cooling branch 405, ensuring the system temperature remains within the set range and achieving precise constant temperature control. Simultaneously, the buffer tank 11 automatically adjusts the system pressure according to changes in the volume of the heat transfer medium within the system, ensuring stable system operation.

[0055] Furthermore, the air-cooled heat dissipation mechanism 3 includes: a fan assembly installed on one side of the cabinet 1. Specifically, the fan assembly includes: a mounting plate 301 fixed to the side wall of the cabinet 1, the mounting plate 301 having through holes for airflow; a mesh cover bracket 302 fixedly connected to the mounting plate 301, the mesh cover bracket 302 having a mesh cover fixedly connected to it; and fan blades 303 rotatably connected to the mesh cover bracket 302, the fan blades 303 being electrically connected to the PLC control unit.

[0056] The air-cooled heat dissipation mechanism 3 also includes an air-cooled heat sink, which is connected to the fan assembly via a bracket and fixedly connected to the cabinet 1 via an air-cooled heat sink connection part. The heat sink is provided with an S-shaped flow channel to increase the residence time of the heat transfer medium in the air-cooled heat sink. Specifically, the air-cooled radiator includes: a first heat dissipation pipe 304, which has an inlet end and an outlet end, and is connected to a cooling branch 405 through the inlet end and the outlet end. Multiple first guide baffles 307 are axially spaced on the first heat dissipation pipe 304 to guide the flow direction of the heat transfer medium; a second heat dissipation pipe 305, on which multiple second guide baffles 308 are axially spaced. The multiple second guide baffles 308 and the multiple first guide baffles 307 are staggered to form an S-shaped path, allowing the heat transfer medium to flow and exchange heat fully within the radiator; and multiple heat dissipation fins 306, which are equally spaced and installed between the first heat dissipation pipe 304 and the second heat dissipation pipe 305, connecting the first heat dissipation pipe 304 and the second heat dissipation pipe 305. This equidistant installation and connection method helps to achieve uniform heat dissipation and improves heat dissipation efficiency.

[0057] Furthermore, a gas-liquid separator 7 is installed on the circulation pipeline, and an exhaust valve is installed on the gas-liquid separator 7. The gas-liquid separator 7 is used to prevent cavitation and gas lock of the circulation pump 8. When gas (such as air or dissolved gas) is mixed into the system circulation pipeline 4, the gas may be compressed in the high-pressure area and rapidly expand in the low-pressure area (such as the pump inlet), causing a sudden drop in local pressure and triggering cavitation. Cavitation can damage the impeller and seals of the circulation pump 8, shortening the equipment life. The gas-liquid separator 7 avoids cavitation by removing gas. Gas accumulation in the system circulation pipeline 4 can form gas lock, hindering fluid circulation and causing system pressure fluctuations or insufficient flow. The gas-liquid separator 7 can ensure continuous fluid flow and maintain stable system operation. Under high temperature or high pressure conditions, dissolved gases in the fluid are more likely to precipitate. The gas-liquid separator 7 can effectively remove these gases, ensuring safe system operation. Gas can form a heat insulation layer in the heat exchanger, reducing heat exchange efficiency. The gas-liquid separator 7 ensures that there is no gas interference in the fluid, improving the heat transfer performance of the heat exchanger and thus enhancing the temperature control efficiency of the device. It should be noted that the gas-liquid separator 7 in this application is prior art, from Jiangsu Gaojie Energy-Saving Equipment Group Co., Ltd., and its specific structure and principle will not be elaborated upon further.

[0058] Furthermore, a filter 6 is installed on the circulation pipeline near the system inlet 401. The filter 6 is preferably a Y-type filter 6, which is used to filter impurities in the heat transfer medium.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this application; all such changes and modifications fall within the scope of the claims. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. An air-cooled heating and circulating temperature control device, characterized in that, include: Cabinet; The system circulation pipeline is installed inside the cabinet, and the system circulation pipeline is provided with a system outlet and a system inlet. A circulation pump is installed on the system circulation pipeline, and a temperature sensor is installed on the circulation pipeline near the system outlet. An electric heating tank is connected to the system circulation pipeline, and the electric heating tank is located between the temperature sensor and the circulation pump; A buffer tank, installed inside the cabinet and connected to the system circulation pipeline via a return pipe, is used to accommodate the volume expansion of the heat transfer medium due to temperature changes, while stabilizing the system pressure. The system's circulation pipeline is equipped with a heating branch and a cooling branch. A first solenoid valve is installed on the heating branch, and a second solenoid valve and an air-cooled heat dissipation mechanism are installed on the cooling branch. When heating is required, the first solenoid valve opens, the second solenoid valve closes, and the electric heating tank opens to heat the heat transfer medium. When cooling is required, the power of the electric heating tank is reduced, the first solenoid valve is closed, and the second solenoid valve and the air-cooling heat dissipation mechanism are opened to cool the heat transfer medium.

2. The air-cooled heating circulation temperature control device according to claim 1, characterized in that, The air-cooled heat dissipation mechanism includes: The fan assembly is installed on one side of the cabinet. The air-cooled radiator is connected to the fan assembly via a bracket, and the radiator is provided with an S-shaped flow channel to increase the residence time of the heat transfer medium in the air-cooled radiator.

3. The air-cooled heating and circulating temperature control device according to claim 2, characterized in that: The air-cooled radiator includes: The first heat dissipation pipe has an inlet end and an outlet end, and multiple first guide baffles are axially spaced on the first heat dissipation pipe. The first guide baffles are used to guide the flow direction of the heat transfer medium. The second heat dissipation pipe has multiple second guide baffles axially spaced on it. The multiple second guide baffles and the multiple first guide baffles are spaced and staggered to form an S-shaped path, so that the heat transfer medium can flow and exchange heat fully in the radiator. The heat sink has multiple fins, which are installed at equal intervals between the first heat sink and the second heat sink, and connect the first heat sink and the second heat sink. This equal-interval installation and connection method helps to dissipate heat evenly and improve heat dissipation efficiency.

4. The air-cooled heating circulation temperature control device according to claim 3, characterized in that: The fan assembly includes: Mounting plate, fixed to the side wall of the cabinet; A mesh cover bracket is fixedly connected to the mounting plate, and a mesh cover is fixedly connected to the mesh cover bracket. The fan blades are mounted on the mesh cover bracket.

5. The air-cooled heating circulation temperature control device according to claim 4, characterized in that: Air channels are provided on the side walls of the cabinet to ensure that air flows inside the cabinet under the action of the fan assembly, cooling the heat transfer medium and other components inside the cabinet at the same time.

6. The air-cooled heating circulation temperature control device according to any one of claims 1 to 5, characterized in that: A gas-liquid separator is installed on the circulation pipeline, and an exhaust valve is installed on the gas-liquid separator. The gas-liquid separator is used to prevent cavitation and gas blockage of the circulation pump.

7. The air-cooled heating circulation temperature control device according to claim 6, characterized in that: A filter is installed on the circulation pipeline near the system inlet, and the filter is used to filter impurities in the heat transfer medium.

8. The air-cooled heating circulation temperature control device according to claim 7, characterized in that: The electric heating tank is equipped with an electric heating rod.

9. The air-cooled heating circulation temperature control device according to claim 8, characterized in that: The cabinet is equipped with a control cabinet, and the PLC control unit inside the control cabinet is electrically connected to the temperature sensor, the first solenoid valve, the second solenoid valve, the electric heating rod, the fan blade, and the circulating pump.

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