A new type of furnace heat treatment furnace

Abstract

The utility model relates to heat treatment furnace technical field, and specifically is a kind of heat treatment furnace of new hearth, including hearth body, high temperature resistance layer is arranged in the hearth body, the outside of high temperature resistance layer is provided with efficient heat insulation layer, flow channel is provided in the efficient heat insulation layer, the driving mechanism for the airflow flow of hearth body inside is installed in the hearth body side wall, and the hearth door is hingedly connected in the hearth body side wall;The utility model is in by embedding flow channel in efficient heat insulation layer, and driving circulation fan is forced to push in stove gas circulation, realizes the initiative balance of heat.The mechanism can direct delivery the heat of top high-temperature zone to bottom low-temperature zone, and break the inherent temperature stratification of traditional hearth from the root.The temperature difference in stove is accurately controlled within ±5°C from conventional ±15°C above, and the consistency and stability of heat treatment workpiece quality are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment furnace technology, specifically a new type of heat treatment furnace with a novel furnace chamber. Background Technology

[0002] Heat treatment furnaces are a general term for industrial furnaces used to perform various heat treatments on metal workpieces. Various furnace types can be used, but strict control of furnace temperature and atmosphere is required. Box-type heat treatment furnaces are a widely used type of periodic operation furnace in metal heat treatment. During heat treatment in a box-type furnace, the temperature uniformity within the furnace significantly affects the heat treatment effect on the workpiece. Uneven temperature distribution within the furnace will result in the metal heat treatment effect failing to meet design requirements.

[0003] Currently, conventional heat treatment furnaces typically use a single material of refractory bricks for the furnace chamber or are integrally cast with refractory castable. During heating, heat is primarily transferred through radiation and convection within the furnace chamber, resulting in a significant temperature gradient. This leads to uneven heating of the workpiece, affecting the quality of the heat treatment. Furthermore, traditional furnace chambers have limited insulation properties and significant heat loss. Therefore, this paper proposes a novel furnace chamber design to address these issues. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a new type of heat treatment furnace with a novel furnace chamber.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a novel heat treatment furnace with a furnace body, wherein a high-temperature resistant layer is provided inside the furnace body, a high-efficiency heat insulation layer is provided on the outside of the high-temperature resistant layer, a flow guiding channel is provided in the high-efficiency heat insulation layer, a driving mechanism for airflow inside the furnace body is installed on the side wall of the furnace body, a furnace door is hinged to the side wall of the furnace body, an observation window is provided on the side wall of the furnace door, a handle is fixedly connected to the side wall of the furnace door, and a control mechanism for controlling the temperature inside the furnace body is installed inside the furnace body.

[0006] Preferably, the flow guiding channel is an annular channel, the driving mechanism is a circulating fan, the flow guiding channel is connected to the circulating fan, and the flow guiding channel is provided with an air inlet and an air outlet, the air inlet being located in the upper part of the furnace and the air outlet being located in the lower part of the furnace.

[0007] Preferably, the control mechanism includes multiple temperature sensors, each of which is embedded in a different position of the high-temperature resistant layer. The temperature sensors are connected to the circulating fan via a controller and are configured to dynamically adjust the operating power of the circulating fan based on the feedback signal from the temperature sensors.

[0008] Preferably, the inner surface of the high-temperature resistant layer is one of a wave-shaped, sawtooth-shaped, or boss-shaped structure, and the material of the high-temperature resistant layer is silicon carbide or alumina composite ceramic.

[0009] Preferably, the high-efficiency heat insulation layer is a composite structure of nanoporous heat insulation board and ceramic fiber blanket.

[0010] Preferably, a sealing ring is provided on the furnace door.

[0011] Preferably, a sealing groove is provided on the side wall of the furnace body, and the sealing groove fits into the sealing ring.

[0012] The advantages of this utility model are: 1. This invention achieves active temperature equalization by constructing a flow channel within a high-efficiency insulation layer and driving a circulating fan to force gas circulation within the furnace, actively transferring heat from the high-temperature area at the top to the low-temperature area at the bottom. This dynamic heat redistribution mechanism fundamentally breaks down temperature stratification, precisely controlling the furnace temperature difference from the conventional ±15°C or even higher to within ±5°C, greatly improving the consistency and quality of heat-treated workpieces.

[0013] 2. This utility model employs a high-efficiency heat insulation layer, which greatly suppresses heat loss from the furnace body. Simultaneously, through internal heat circulation, it reduces the overheating demand caused by balancing temperature differences, thereby improving thermal energy utilization. Actual measurements show that this structure achieves a comprehensive energy saving rate of 20%-30%, directly reducing the long-term energy costs of the equipment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the furnace body of this utility model; Figure 3 This is a partial structural diagram of the high-temperature resistant layer and temperature sensor of this utility model; Figure 4 This is a partial structural diagram of the furnace door and handle of this utility model.

[0016] In the diagram: 1. High-temperature resistant layer; 2. High-efficiency heat insulation layer; 3. Flow guide channel; 4. Circulating fan; 5. Air outlet; 6. Air inlet; 7. Temperature sensor; 8. Controller; 9. Sealing ring; 10. Furnace door; 11. Furnace body; 12. Observation window; 13. Handle; 14. Sealing groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0018] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail. This application discloses a novel heat treatment furnace with a novel furnace chamber. (Refer to...) Figure 1 and Figure 4 A novel heat treatment furnace includes a furnace body 11. A high-temperature resistant layer 1 is disposed inside the furnace body 11, and a high-efficiency heat insulation layer 2 is disposed on the outside of the high-temperature resistant layer 1. A flow guiding channel 3 is disposed within the high-efficiency heat insulation layer 2. A driving mechanism for airflow within the furnace body 11 is installed on the side wall of the furnace body 11. A furnace door 10 is hinged to the side wall of the furnace body 11, and an observation window 12 is disposed on the side wall of the furnace door 10. A handle 13 is fixedly connected to the side wall of the furnace door 10. A control mechanism for controlling the temperature inside the furnace body 11 is installed inside the furnace body 11. The high-temperature resistant layer 1 provides corrosion resistance, the high-efficiency heat insulation layer 2 prevents heat loss, and the flow guiding channel 3 achieves a synergistic effect of active temperature equalization.

[0019] Reference Figure 1 and Figure 2 The flow guide channel 3 is an annular channel, and the driving mechanism is a circulating fan 4. The flow guide channel 3 is connected to the circulating fan 4. The flow guide channel 3 is provided with an air inlet 6 and an air outlet 5. The air inlet 6 is located in the upper part of the furnace, and the air outlet 5 is located in the lower part of the furnace. Through the above arrangement, the highest temperature gas accumulated at the top of the furnace body 11 can be directly drawn in and forcibly transported to the bottom, realizing heat transfer from top to bottom. This maximizes the use of the natural law of hot air rising to counteract the temperature difference it causes, thus maximizing the temperature uniformity. The annular channel ensures the uniformity of heating of the cross-section of the furnace body 11. Reference Figure 2 and Figure 3The control mechanism includes multiple temperature sensors 7, each embedded in different positions of the high-temperature resistant layer 1. Each temperature sensor 7 is signal-connected to the circulating fan 4 via a controller 8 and is configured to dynamically adjust the operating power of the circulating fan 4 based on the feedback signals from the temperature sensors 7. Through this configuration, real and timely thermal field data of the furnace body 11 is obtained via the multi-point embedded temperature sensors 7, and closed-loop control is achieved by the controller 8. The system can adaptively adjust the temperature uniformity. This not only ensures that a minimal temperature difference is maintained under any operating condition but also automatically reduces the power of the circulating fan 4 when the temperature difference is small, avoiding energy waste and further optimizing energy consumption. Reference Figure 2 and Figure 3 The inner surface of the high-temperature resistant layer 1 is one of a wave-shaped, sawtooth-shaped, or protruding shape. The material of the high-temperature resistant layer 1 is silicon carbide or alumina composite ceramic. Through the above-mentioned settings, the wave-shaped and other designs significantly increase the radiative heat transfer area of ​​the inner wall of the furnace body 11, improve the efficiency and uniformity of heat transfer to the workpiece, and accelerate the heating rate. The selection of silicon carbide or alumina composite ceramic endows the furnace body 11 with extremely high high-temperature strength, wear resistance, and excellent thermal shock resistance, effectively solving the technical problem of traditional materials being prone to cracking under alternating hot and cold conditions, and greatly extending the service life. Reference Figure 1 and Figure 2 The high-efficiency insulation layer 2 is a composite structure of a nanoporous insulation board and a ceramic fiber blanket. Through this configuration, the nanoporous insulation board, a top-tier high-efficiency insulation material with extremely low thermal conductivity, combined with the ceramic fiber blanket, can minimize heat loss from the furnace body 11 while ensuring structural stability. This directly translates to a lower furnace shell temperature and higher thermal efficiency, a key technological guarantee for achieving significant energy savings. Reference Figure 1 and Figure 4 The furnace door 10 is equipped with a sealing ring 9. Through the above-mentioned arrangement, the sealing ring 9 tightly fits the contact surface through elastic deformation, forming an effective airtight barrier. This greatly reduces heat loss caused by convection and radiation, allowing the heat inside the furnace to be more concentrated for heating the workpiece, thereby directly reducing the energy consumption required to maintain the set temperature, resulting in significant energy-saving effects. Reference Figure 2 and Figure 4 The furnace body 11 has a sealing groove 14 on its side wall, which fits into the sealing ring 9. This fitting structure ensures the airtightness of the furnace door when closed. This not only effectively prevents heat loss but also prevents cold air intrusion, further ensuring a stable atmosphere and uniform temperature inside the furnace, which is crucial for high-quality heat treatment processes and improves the reliability of the entire system.

[0020] Working principle: A forced circulation system is formed by embedding a specially designed flow channel 3 inside or on the back of the high-efficiency insulation layer 2 and connecting it to an external circulating fan 4. This system actively extracts the high-temperature gas accumulated at the top of the furnace body 11 through the outlet 5, and then forces it into the inlet 6 by the fan 4, forcing this excess heat to flow within the flow channel 3. During this process, heat is continuously and evenly released through the channel wall to the relatively cooler lower part of the furnace body 11, realizing the dynamic redistribution of heat within the furnace body 11.

[0021] Building upon active temperature equalization, efficiency is further maximized through multi-layered structural collaboration and intelligent control. The corrugated inner surface of the high-temperature resistant layer 1 significantly increases the radiative heat transfer area, while the high-efficiency insulation layer 2 on its outer side greatly suppresses heat loss, ensuring concentrated energy utilization. More importantly, temperature sensors 7 integrated at key locations monitor the temperature of each area of ​​the furnace in real time and feed the data back to the intelligent controller 8. The controller 8 dynamically adjusts the speed of the circulating fan 4 through a built-in algorithm, thereby precisely controlling the intensity of the temperature equalization system. This forms a complete closed-loop intelligent control system, enabling the furnace to not only achieve uniform heating but also adaptively adjust according to real-time operating conditions. Simultaneously, the furnace door sealing system, composed of sealing rings 9 and sealing grooves 14, ultimately achieves the goals of high efficiency, energy saving, and stable operation while improving product quality.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A novel heat treatment furnace with a furnace chamber, comprising a furnace chamber body (11), characterized in that: The furnace body (11) is provided with a high temperature resistant layer (1), and a high efficiency heat insulation layer (2) is provided on the outside of the high temperature resistant layer (1). A flow guide channel (3) is provided in the high efficiency heat insulation layer (2). A drive mechanism for airflow inside the furnace body (11) is installed on the side wall of the furnace body (11). The furnace body (11) is hinged to a furnace door (10) on its side wall. An observation window (12) is provided on the side wall of the furnace door (10). A handle (13) is fixedly connected to the side wall of the furnace door (10). A control mechanism for controlling the temperature inside the furnace body (11) is installed inside the furnace body (11).

2. The novel heat treatment furnace with a furnace lining according to claim 1, characterized in that: The flow channel (3) is an annular channel, the driving mechanism is a circulating fan (4), the flow channel (3) is connected to the circulating fan (4), and the flow channel (3) is provided with an air inlet (6) and an air outlet (5). The air inlet (6) is located in the upper part of the furnace, and the air outlet (5) is located in the lower part of the furnace.

3. The novel heat treatment furnace with a furnace lining according to claim 1, characterized in that: The control mechanism includes multiple temperature sensors (7), each of which is embedded in different positions of the high-temperature resistant layer (1). The temperature sensors (7) are connected to the circulating fan (4) via a controller (8) and are configured to dynamically adjust the operating power of the circulating fan (4) based on the feedback signal from the temperature sensors (7).

4. The heat treatment furnace with a novel furnace lining according to claim 1, characterized in that: The inner surface of the high-temperature resistant layer (1) is one of the following: wavy, sawtooth, or protruding. The material of the high-temperature resistant layer (1) is silicon carbide or alumina composite ceramic.

5. A novel heat treatment furnace with a furnace lining according to claim 1, characterized in that: The high-efficiency heat insulation layer (2) is a composite structure of nanoporous heat insulation board and ceramic fiber blanket.

6. The novel heat treatment furnace with a furnace lining according to claim 1, characterized in that: A sealing ring (9) is provided on the furnace door (10).

7. A novel heat treatment furnace with a furnace lining according to claim 1, characterized in that: The furnace body (11) has a sealing groove (14) on its side wall, which fits into the sealing ring (9).

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