Heat preservation device with constant-temperature heating function

Abstract

The utility model provides a heat preservation device with a constant-temperature heating function, which belongs to the technical field of heat preservation tanks and comprises a heat preservation tank with a top cover, an air heater is mounted on the lower portion of the outer wall of the peripheral side of the heat preservation tank, and the output end of the air heater penetrates into an inner cavity of the heat preservation tank through an air supply pipe and is connected with a heating header pipe. The heating header pipe is longitudinally arranged on the central axis of the heat preservation tank, a dustproof exhaust assembly is arranged at the top end of the heating header pipe, an exhaust dust filtering pipe fitting is arranged on the top face of the top cover, and the free end of the dustproof exhaust assembly is connected to the exhaust dust filtering pipe fitting. A plurality of U-shaped heating pipes are symmetrically connected to the outer wall of the peripheral side of the heating header pipe in a vertically staggered and penetrating mode. According to the heat preservation tank, the utilization efficiency of hot air is improved, heat in the heat preservation tank is distributed more uniformly, the heat transfer efficiency is improved, and the temperature in the heat preservation tank is more uniform.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat preservation tanks, and particularly relates to a heat preservation device with a constant temperature heating function. Background Art

[0002] Insulated tanks are widely used in many industrial and laboratory applications to store and process liquids or materials that need to be maintained at a specific temperature. Common insulated tanks often utilize a lid that fits within the tank body to create a sealed environment, while the tank walls contain cavities to enhance thermal insulation.

[0003] Traditional holding tanks typically have only one heater or heating tube, which concentrates heat near the heater while creating a temperature gradient farther away from the heater. This uneven temperature distribution can affect material handling, particularly in applications requiring precise temperature control. Even with multiple heaters, improper heater placement can still result in some areas being too hot while others are too cold, impacting heating effectiveness. Utility Model Content

[0004] The purpose of the utility model is to provide a heat preservation device with a constant temperature heating function, aiming to solve the problem in the prior art that uneven temperature distribution affects the processing effect of materials.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an insulation device with a constant temperature heating function, comprising an insulation tank with a top cover, a hot air blower installed on the lower part of the peripheral outer wall of the insulation tank, the output end of the hot air blower passes through the inner cavity of the insulation tank through an air supply pipe and is connected to a heating main pipe, the heating main pipe is longitudinally arranged on the central axis of the insulation tank, a dust-proof exhaust assembly is provided on the top of the heating main pipe, the top surface of the top cover has an exhaust dust filter pipe fitting, the free end of the dust-proof exhaust assembly is connected to the exhaust dust filter pipe fitting, and a plurality of U-shaped heating pipes are symmetrically connected to the peripheral outer wall of the heating main pipe in an upper and lower staggered manner.

[0006] Preferably, the dust-proof exhaust assembly of this solution includes a bent pipe sealedly connected to the top of the heating main pipe, a dust collecting U-shaped pipe sealedly connected to the bottom of the bent pipe, and an exhaust connecting pipe sealedly connected to the top of the dust collecting U-shaped pipe.

[0007] Preferably, the exhaust dust filtering pipe assembly includes an exhaust pipe fixedly connected to the top surface of the top cover and a filter screen fixed in the inner cavity of the exhaust pipe.

[0008] Preferably, the exhaust connecting pipe is longitudinally arranged in the inner cavity of the heat preservation tank, and the exhaust connecting pipe is sealed and connected to the exhaust pipe away from the top end of the dust collecting U-shaped pipe.

[0009] Preferably, the outer wall of one end of each U-shaped heating tube away from the heating main pipe is provided with an arc-shaped heat transfer plate, and the arc-shaped heat transfer plate abuts against the inner wall of the insulation tank.

[0010] Preferably, the inner wall of the arc-shaped heat transfer plate is integrally connected with a connecting block, and the connecting block is fixed on the outer wall of the U-shaped heating tube.

[0011] Preferably, in this solution, a fixed sleeve on the middle outer wall of the heating main pipe is provided with a fixed collar, and support rods are symmetrically welded to the outer wall around the fixed collar.

[0012] Preferably, a connecting ear plate is welded to one end of the support rod away from the fixing collar, and the connecting ear plate is connected to the inner wall of the heat preservation tank by bolts.

[0013] This solution is preferred, in that the material of the heating main pipe, U-shaped heating tube and arc-shaped heat transfer plate is aluminum, which facilitates heat transfer, a mounting plate is fixed on the upper inner wall of the insulation tank, a temperature sensor is embedded in the free end of the mounting plate, and a control electrical box is provided on the lower outer wall of the insulation tank, and a PLC is provided in the inner cavity of the control electrical box.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This insulation device with constant temperature heating function arranges a heating main pipe and multiple U-shaped heating tubes inside the insulation tank, so that the hot air fills each U-shaped heating tube in sequence from bottom to top, and then returns to the heating main pipe from the other end of the U-shaped heating tube. This design not only improves the utilization efficiency of the hot air, but also makes the heat distribution inside the insulation tank more uniform. The layout of the U-shaped heating tubes staggered up and down ensures that the hot air is evenly distributed throughout the insulation tank, avoiding local overheating or overcooling. The heating main pipe on the longitudinal center axis is located on the center axis of the insulation tank, further ensuring the uniform distribution of heat.

[0016] 2. This thermostatic heating device features a dust-proof exhaust assembly. After hot air is exhausted from the heating main pipe, it passes through the dust-proof exhaust assembly and exhaust dust filter pipe (,), creating a smooth airflow cycle. The dust-proof exhaust assembly, consisting of an elbow, a dust-collecting U-shaped pipe, and an exhaust connection pipe, effectively filters dust from the exhaust air, preventing it from re-entering the thermostat. A filter within the exhaust pipe further filters the exhaust air, ensuring cleanliness and reducing environmental pollution.

[0017] 3. This constant-temperature heating device features curved heat transfer plates at the ends of the U-shaped heating tubes. These plates not only transfer heat from the tubes to the inner wall of the insulation tank but also support the tubes. The curved heat transfer plates increase the heat transfer area and efficiency, resulting in a more uniform temperature inside the tank. The curved heat transfer plates abut the inner wall of the insulation tank, enhancing the stability of the U-shaped heating tubes and preventing damage from vibration or other factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the dust-proof and exhaust assembly in the present utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure of the heating main pipe in the present utility model;

[0022] Figure 4 This is a schematic diagram of the disassembly structure of the arc-shaped heat transfer plate in the present invention.

[0023] In the figure: 1. Insulation tank; 2. Top cover; 3. Exhaust pipe; 4. Filter; 5. Control electrical box; 6. Hot air blower; 7. Air supply pipe; 8. Mounting plate; 9. Temperature sensor; 10. Heating main pipe; 11. Exhaust connecting pipe; 12. Dust-proof exhaust assembly; 13. Dust collection U-shaped pipe; 14. Elbow; 15. Connector; 16. U-shaped heating pipe; 17. Arc-shaped heat transfer plate; 18. Fixing ring; 19. Support rod; 20. Connecting ear plate; 21. Connecting block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0025] See also Figures 1-4The utility model provides the following technical solutions: an insulation device with a constant temperature heating function, comprising an insulation tank 1 with a top cover 2, a hot air blower 6 is installed on the lower part of the peripheral outer wall of the insulation tank 1, the output end of the hot air blower 6 passes through the inner cavity of the insulation tank 1 through the air supply pipe 7 and is connected to a heating main pipe 10, the heating main pipe 10 is longitudinally arranged on the central axis of the insulation tank 1, a dust-proof exhaust component 12 is provided on the top of the heating main pipe 10, the top surface of the top cover 2 has an exhaust dust filter pipe fitting, the free end of the dust-proof exhaust component 12 is connected to the exhaust dust filter pipe fitting, and a plurality of U-shaped heating pipes 16 are symmetrically connected to the peripheral outer wall of the heating main pipe 10 in an upper and lower staggered manner. The hot air output by the hot air blower 6 enters the heating main pipe 10 through the air supply pipe 7. The hot air in the heating main pipe 10 fills each U-shaped heating tube 16 from bottom to top in sequence, and is then output from the other end of the U-shaped heating tube 16 to the heating main pipe 10. Under the action of the heating main pipe 10 and the U-shaped heating tube 16, the inner cavity of the insulation tank 1 can be heated. At the same time, the U-shaped heating tubes 16 staggered up and down and the heating main pipe 10 located on the longitudinal center axis can make the heat in the insulation tank 1 more uniform. At the same time, the hot air in the heating main pipe 10 is discharged through the dust-proof exhaust assembly 12 and the exhaust dust filter pipe, forming an air circulation, thereby ensuring a constant temperature in the inner cavity of the insulation tank 1. At the same time, the provision of the dust-proof exhaust assembly 12 can not only help to discharge the air flow in the heating main pipe 10, but also prevent dust from entering the heating main pipe 10. The hot air blower 6 generates hot air and sends the hot air into the heating main pipe 10 through the air supply pipe 7. It is a key component for providing a heat source, ensuring that the temperature inside the insulation tank 1 rises. The air supply pipe 7 connects the hot air blower 6 and the heating main pipe 10, and is used to transmit the hot air generated by the hot air blower 6 to ensure that the hot air can smoothly reach the heating main pipe 10. The heating main pipe 10 is located at the center of the insulation tank 1, receives the hot air generated by the hot air blower 6 through the air supply pipe 7, and evenly distributes the heat to the inside of the insulation tank 1 through the U-shaped heating pipe 16, thereby improving the heating efficiency. Multiple U-shaped heating pipes 16 are staggered around the heating main pipe 10, which increases the contact area between the hot air and the material inside the insulation tank 1, thereby improving the heating efficiency and temperature uniformity. The arc-shaped heat transfer plate 17 is installed at the end of the U-shaped heating pipe 16, close to the inner wall of the insulation tank 1, enhancing the heat transfer efficiency, and at the same time supporting the U-shaped heating pipe 16.

[0026] In this embodiment, the dust-proof exhaust assembly 12 includes a bend pipe 14 that is sealed and connected to the top of the heating main pipe 10, a dust collecting U-shaped pipe 13 that is sealed and connected to the bottom of the bend pipe 14, and an exhaust connecting pipe 11 that is sealed and connected to the top of the dust collecting U-shaped pipe 13. As a part of the dust-proof exhaust assembly 12, the dust collecting U-shaped pipe 13 can collect fine particles that may be entrained in the exhaust gas, thereby reducing environmental pollution. The bend pipe 14 connects the heating main pipe 10 and the dust collecting U-shaped pipe 13, helping to guide the direction of gas flow, while also playing a certain buffering role and reducing the impact of airflow. One end of the exhaust connecting pipe 11 is connected to the top of the heating main pipe 10, and the other end is sealed and connected to the exhaust pipe 3 on the top cover 2, which is used to guide the hot air in the heating main pipe 10 to be discharged, forming a good airflow circulation.

[0027] In this embodiment, the exhaust dust filter assembly includes an exhaust pipe 3 fixedly connected to the top surface of the top cover 2 and a filter screen 4 fixed within the inner cavity of the exhaust pipe 3. The filter screen 4 is installed inside the exhaust pipe 3 to filter impurities in the exhaust gas, prevent environmental pollution, and protect the dust-proof exhaust assembly 12 from damage.

[0028] In this embodiment, the exhaust connecting pipe 11 is longitudinally arranged in the inner cavity of the heat preservation tank 1, and the exhaust connecting pipe 11 is sealedly connected to the exhaust pipe 3 away from the top end of the dust collecting U-shaped pipe 13.

[0029] In this embodiment, each U-shaped heating tube 16 is provided with a curved heat transfer plate 17 on the outer wall of the end away from the heating main pipe 10. This curved heat transfer plate 17 abuts the inner wall of the insulated tank 1. This curved heat transfer plate 17 not only transfers heat from the U-shaped heating tube 16 to the inner wall of the insulated tank 1, thereby enhancing the insulation effect within the insulated tank 1, but also provides support for the U-shaped heating tube 16 due to its abutment against the inner wall of the insulated tank 1.

[0030] In this embodiment, the inner wall of the arc-shaped heat transfer plate 17 is integrally connected with a connecting block 21 , and the connecting block 21 is fixed on the outer wall of the U-shaped heating tube 16 .

[0031] In this embodiment, a fixed collar 18 is fixedly sleeved on the outer wall of the middle portion of the heating main pipe 10 , and support rods 19 are symmetrically welded to the outer wall around the fixed collar 18 .

[0032] In this embodiment, a connecting ear plate 20 is welded to one end of the support rod 19 away from the fixing collar 18 , and the connecting ear plate 20 is connected to the inner wall of the heat preservation tank 1 by bolts.

[0033] In this embodiment, the heating main pipe 10, U-shaped heating tube 16, and arc-shaped heat transfer plate 17 are made of aluminum, which facilitates heat transfer. A mounting plate 8 is fixed to the upper portion of the inner wall of the insulation tank 1, and a temperature sensor 9 is embedded in the free end of the mounting plate 8. A control box 5 is provided at the lower portion of the peripheral outer wall of the insulation tank 1, and a PLC is located in the inner cavity of the control box 5. The PLC receives the output signal of the temperature sensor 9 and controls the opening and closing of the hot air blower 6. The bottom outer wall of the heating main pipe 10 has a connector 15, which is sealed to the free end of the air supply pipe 7. The temperature sensor 9 is mounted on the mounting plate 8, monitors the temperature changes in the insulation tank 1 in real time, and sends the data to the control box 5, so that the system can adjust its operating state according to the actual temperature.

[0034] In this embodiment, the electrical components mentioned in this article are all electrically connected to an external main controller and 220V mains electricity.

[0035] The working principle and usage process of this utility model are as follows: When using this heat preservation device with a constant temperature heating function, the top cover 2 is closed and sealed to ensure the airtightness of the internal environment of the heat preservation tank 1. The power supply of the control electrical box 5 is connected to start the system. The temperature sensor 9 monitors the temperature inside the heat preservation tank 1 in real time and sends the data to the PLC controller. The PLC controller displays the current temperature on the display screen of the control electrical box 5 for the operator to view.

[0036] The PLC controller compares the current temperature with the preset target temperature. If the current temperature is lower than the target temperature, the PLC controller issues a command to start the hot air blower 6. The hot air generated by the hot air blower 6 is transported to the heating main pipe 10 through the air supply pipe 7. The hot air flows upward from the bottom of the heating main pipe 10, filling each U-shaped heating tube 16 in turn. The design of the U-shaped heating tube 16 ensures that the hot air is evenly distributed within the insulation tank 1, improving heating efficiency. The curved heat transfer plate 17 on the U-shaped heating tube 16 transfers heat to the inner wall of the insulation tank 1, further enhancing the internal insulation effect.

[0037] The hot air in the U-shaped heating tube 16 returns to the heating main pipe 10 from the other end, forming an internal circulation system. The hot air at the top of the heating main pipe 10 enters the dust-proof exhaust assembly 12 through the exhaust connection pipe 11. The hot air passes through the elbow 14 and the dust-collecting U-shaped pipe 13, where dust is filtered out. The clean air is then discharged through the exhaust connection pipe 11 and finally out of the exhaust pipe 3. The filter 4 within the exhaust pipe 3 further filters the exhaust air, ensuring its cleanliness.

[0038] Temperature sensor 9 continuously monitors the temperature inside the insulated tank 1 in real time. The PLC controller dynamically adjusts the operating state of hot air blower 6 based on the difference between the current temperature and the target temperature. If the temperature reaches or exceeds the target temperature, the PLC controller issues a command to stop hot air blower 6. This process maintains a constant temperature inside the insulated tank 1, ensuring that materials are heated or stored at the ideal temperature.

[0039] The PLC controller continuously monitors the operating status of each component and immediately triggers an alarm if it detects an anomaly (such as a temperature sensor failure or a hot air blower overload). Operators can then take timely action based on the alarm to troubleshoot and ensure normal system operation.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A heat preservation device with a constant temperature heating function, comprising a heat preservation tank (1) with a top cover (2), characterized in that: A hot air blower (6) is installed at the lower part of the peripheral outer wall of the heat preservation tank (1), and the output end of the hot air blower (6) passes through the inner cavity of the heat preservation tank (1) through the air supply pipe (7) and is connected to the heating main pipe (10). The heating main pipe (10) is longitudinally arranged on the central axis of the heat preservation tank (1). The top end of the heating main pipe (10) is provided with a dust-proof exhaust assembly (12). The top surface of the top cover (2) has an exhaust dust filter pipe fitting. The free end of the dust-proof exhaust assembly (12) is connected to the exhaust dust filter pipe fitting. A plurality of U-shaped heating pipes (16) are symmetrically connected to the peripheral outer wall of the heating main pipe (10) in an upper and lower staggered manner.

2. The heat preservation device with constant temperature heating function according to claim 1, characterized in that: The dust-proof exhaust assembly (12) comprises a curved pipe (14) sealedly connected to the top end of the heating main pipe (10), a dust collecting U-shaped pipe (13) sealedly connected to the bottom end of the curved pipe (14), and an exhaust connecting pipe (11) sealedly connected to the top end of the dust collecting U-shaped pipe (13).

3. The heat preservation device with constant temperature heating function according to claim 2, characterized in that: The exhaust dust filter pipe assembly comprises an exhaust pipe (3) fixedly connected to the top surface of the top cover (2) and a filter screen (4) fixed in the inner cavity of the exhaust pipe (3).

4. The heat preservation device with constant temperature heating function according to claim 3, characterized in that: The exhaust connecting pipe (11) is longitudinally arranged in the inner cavity of the heat-insulating tank (1), and the exhaust connecting pipe (11) is sealedly connected to the exhaust pipe (3) away from the top end of the dust collecting U-shaped pipe (13).

5. The heat preservation device with constant temperature heating function according to claim 4, characterized in that: An arc-shaped heat transfer plate (17) is provided on the outer wall of one end of each U-shaped heating tube (16) away from the heating main tube (10), and the arc-shaped heat transfer plate (17) abuts against the inner wall of the heat preservation tank (1).

6. The heat preservation device with constant temperature heating function according to claim 5, characterized in that: The inner wall of the arc-shaped heat transfer plate (17) is integrally connected with a connecting block (21), and the connecting block (21) is fixed on the outer wall of the U-shaped heating tube (16).

7. The heat preservation device with constant temperature heating function according to claim 6, characterized in that: A fixed sleeve is provided on the middle outer wall of the heating main pipe (10) and a fixed collar (18) is provided. Support rods (19) are symmetrically welded to the outer wall of the peripheral side of the fixed collar (18).

8. The heat preservation device with constant temperature heating function according to claim 7, characterized in that: A connecting lug (20) is welded to one end of the support rod (19) away from the fixing collar (18), and the connecting lug (20) is connected to the inner wall of the heat preservation tank (1) via bolts.

9. The heat preservation device with constant temperature heating function according to claim 8, characterized in that: The heating main pipe (10), the U-shaped heating pipe (16) and the arc-shaped heat transfer plate (17) are made of aluminum. A mounting plate (8) is fixed to the upper portion of the inner wall of the heat preservation tank (1), and a temperature sensor (9) is embedded in the free end of the mounting plate (8).

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