Air circulation furnace with uniform heating function

Abstract

The utility model relates to the technical field of heat treatment, and discloses an air circulation furnace with uniform heating, which comprises a base, a heating furnace mounted on the base, a furnace door mounted on the heating furnace, an air guide cover arranged on the heating furnace through a plurality of bolts, a motor mounting seat mounted on the heating furnace and a suspension mounted on the motor mounting seat. A circulating motor is mounted on the motor mounting seat, an impeller is mounted on an output shaft of the circulating motor, the heating furnace, the furnace door and the wind scooper form a closed flow channel, a plurality of radiant tubes are mounted on the heating furnace, the radiant tubes are positioned between the heating furnace and the wind scooper, and a radiant tube power supply lead-out rod shield is arranged on the heating furnace. The interior of the heating furnace is partitioned through the arranged wind scooper, so that air flow can circulate in a partitioned mode, heat is evenly transmitted to a workpiece through the air flow, and the heating effect is improved; the electric heating rods are arranged in order through the limiting magnetic sleeves, contact short circuit of the electric heating rods is prevented, support is provided for the electric heating rods, and the stability of system operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology, specifically, to an air circulation furnace with uniform heating. Background Technology

[0002] An air circulation furnace is a device that achieves uniform heating through airflow. Its technological background stems from the need to improve heating efficiency, temperature uniformity, and energy conservation. Traditional heating equipment (such as electric furnaces and gas furnaces) often suffers from uneven localized temperatures and slow heating speeds, failing to meet the demands of modern industry and laboratories for efficient and precise heating. Therefore, the air circulation furnace was developed. The core of this technology lies in using a fan or air circulation system to continuously circulate heating air within the furnace, ensuring uniform heat distribution and avoiding the heat concentration or unevenness caused by natural convection in traditional equipment. By optimizing the air duct design and heat exchanger layout, the air circulation furnace can rapidly heat and maintain a stable temperature in a short time. Existing air circulation furnaces typically involve simple air circulation without proper flow channel design, resulting in uneven heating of the workpiece during airflow and a low yield rate of finished products. Utility Model Content

[0003] The purpose of this invention is to provide an air circulation furnace with uniform heating, thereby solving the problem of poor heating effect in existing air circulation furnaces.

[0004] This utility model is achieved through the following technical solution: a uniformly heated air circulation furnace includes a base, on which a heating furnace and a protective railing are installed. A furnace door is installed on the heating furnace, and an air guide hood is provided on the heating furnace. The air guide hood is installed on the heating furnace by multiple bolts. A motor mounting base and a suspension are installed on the heating furnace. A circulation motor is installed on the motor mounting base, and an impeller is installed on the output shaft of the circulation motor. The heating furnace, furnace door, and air guide hood form a closed flow channel. The impeller agitates the airflow, causing it to flow from between the air guide hood and the heating furnace towards the furnace door, and then flow back to the origin from the air guide hood in a direction away from the furnace door, thus forming a circulation. Multiple radiant tubes are installed on the heating furnace, and the radiant tubes are located between the heating furnace and the air guide hood. A radiant tube power lead-out rod cover is provided on the heating furnace.

[0005] To better realize this utility model, the radiant tube further includes a mounting head, a support rod is mounted on the mounting head, a plurality of limiting magnetic sleeves are provided on the support rod, a plurality of through holes are provided on the limiting magnetic sleeves, and an electric heating rod is mounted on the mounting head, the electric heating rod passing through the through holes of the limiting magnetic sleeves.

[0006] To better realize this utility model, the heating furnace is further provided with a fresh air duct, which is inserted into the air guide hood and is equipped with an electric butterfly valve.

[0007] To better realize this utility model, the air guide cover is further provided with a guide plate, which is arc-shaped.

[0008] To better realize this utility model, a filter unit is further provided on the heating furnace, and the filter unit is inserted into the heating furnace.

[0009] To better realize this utility model, the inner wall of the heating furnace is further provided with a heat insulation layer.

[0010] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0011] (1) This utility model uses the set air guide hood to divide the interior of the heating furnace into sections, so that the airflow can circulate around the workpiece in the sections, and it can heat up quickly in a small space, and then transfer the heat evenly to the workpiece from all sides, thereby improving the heating effect.

[0012] (2) This utility model uses a limiting magnetic sleeve to make the electric heating rods neatly arranged, which on the one hand prevents the electric heating rods from short-circuiting, and on the other hand provides support for the electric heating rods, thereby improving the stability of the system operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the heating furnace structure.

[0015] Figure 3 This is a right-side sectional view of the heating furnace structure.

[0016] Figure 4 This is a rear-view sectional view of the heating furnace structure.

[0017] Figure 5 This is a schematic diagram of the insulation layer structure.

[0018] Figure 6 This is a schematic diagram of the insulation layer and air guide hood structure.

[0019] Figure 7 This is a schematic diagram of the air guide cover and radiant tube structure.

[0020] Figure 8 This is a schematic diagram of the guide vane structure.

[0021] Figure 9 This is a schematic diagram of the impeller structure.

[0022] Figure 10 This is a schematic diagram of a radiant tube structure.

[0023] Figure 11 for Figure 10 A magnified view of a portion of point A in the middle.

[0024] Wherein: 101-Base; 102-Heating furnace; 103-Guard railing; 104-Furnace door; 105-Fresh air duct; 106-Filter unit; 107-Circulating motor; 108-Radiant tube power lead-out rod cover; 109-Radiant tube; 110-Air guide cover; 111-Insulation layer; 112-Motor mounting base; 113-Bolt; 114-Impeller; 115-Guide plate; 116-Suspension; 117-Support rod; 118-Mounting head; 119-Electric heating rod; 120-Limiting magnetic sleeve. Detailed Implementation

[0025] 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 protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1:

[0028] This embodiment provides an air-circulating furnace for uniform heating, specifically as follows: Figures 1-4 , Figure 7-9As shown, the system includes a base 101, on which a heating furnace 102 is mounted. Protective railings 103 are installed at multiple locations on both the base 101 and the heating furnace 102. A furnace door 104 is installed on the heating furnace 102. An air guide shroud 110 is installed on the heating furnace 102 by multiple bolts 113. A motor mounting bracket 112 and a suspension 116 are mounted on the heating furnace 102, with the suspension 116 located within the air guide shroud 110. A circulating motor 107 is mounted on the motor mounting bracket 112. An impeller 114 is installed on the output shaft 107. The heating furnace 102, furnace door 104, and air guide shroud 110 form a closed flow channel. The impeller 114 agitates the airflow, causing it to flow from between the air guide shroud 110 and the heating furnace 102 toward the furnace door 104, and then flow back to the origin from the air guide shroud 110 away from the furnace door 104, thus forming a cycle. Multiple radiant tubes 109 are installed on the heating furnace 102. The radiant tubes 109 are located between the heating furnace 102 and the air guide shroud 110. A radiant tube power lead-out rod cover 108 is provided on the heating furnace 102.

[0029] The workpiece to be processed is hooked and fixed using the suspension 116. Then, the radiant tube 109 is started, and simultaneously, the circulating motor 107 is activated. The circulating motor 107 drives the impeller 114 to rotate, and the impeller 114 discharges the gas from the center of the air guide shroud 110 radially. The airflow then flows downwards through the radiant tube 109 between the air guide shroud 110 and the heating furnace 102, heating the passing gas. The heated gas then flows to the furnace door 104 and enters the air guide shroud 110, before flowing upwards to the impeller 114. This upward flow of gas evenly heats the workpiece. The air guide shroud 110 divides the interior of the heating furnace 102 into zones, allowing for zoned airflow circulation. This ensures that the airflow evenly transfers heat to the workpiece, improving the heating effect.

[0030] Example 2:

[0031] This embodiment further expands upon the above embodiment in that the radiator 109, specifically as follows: Figures 10-11 As shown, the radiant tube 109 includes a mounting head 118, a support rod 117 is mounted on the mounting head 118, a plurality of limiting magnetic sleeves 120 are provided on the support rod 117, a plurality of through holes are provided on the limiting magnetic sleeves 120, and an electric heating rod 119 is mounted on the mounting head 118, the electric heating rod 119 passing through the through holes of the limiting magnetic sleeves 120.

[0032] The support rod 117 makes the limiting magnetic sleeve 120 uniformly and linearly distributed, and the limiting magnetic sleeve 120 makes the electric heating rod 119 neatly arranged. On the one hand, it prevents the electric heating rod 119 from short-circuiting, and on the other hand, it provides support for the electric heating rod 119, thereby improving the stability of the system operation.

[0033] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0034] Example 3:

[0035] This embodiment further extends the above embodiment, specifically as follows: Figures 2-3 As shown, a fresh air duct 105 is provided on the heating furnace 102. The fresh air duct 105 is inserted into the air guide shroud 110 and an electric butterfly valve is provided on the fresh air duct 105.

[0036] By using the opening and closing of the electric butterfly valve, the heating space inside the heating furnace 102 is connected to the outside space. On the one hand, this can balance the air pressure and prevent potential hazards when the furnace door 104 is opened; on the other hand, it can replace the air inside the heating furnace.

[0037] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0038] Example 4:

[0039] This embodiment further extends the above embodiment, specifically as follows: Figure 8 As shown, the air guide shroud 110 is provided with a guide plate 115, which is arc-shaped.

[0040] When the impeller 114 pumps the airflow out of the air guide shroud 110, the airflow impacts the air guide shroud 110 and is guided by the guide plate 115 to flow more smoothly through the radiator tube 109, thereby improving the airflow circulation efficiency.

[0041] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0042] Example 5:

[0043] This embodiment further extends the above embodiment, specifically as follows: Figures 2-4 As shown, a filter unit 106 is provided on the heating furnace 102, and the filter unit 106 is inserted into the heating furnace 102.

[0044] Since the workpiece needs to be quenched below the heating furnace after heating, some oil fumes will enter the heating furnace 102. In order to discharge the oil pressure, a filter unit 106 is set up to purify the oil fumes and prevent them from affecting the subsequent heating treatment of the workpiece.

[0045] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0046] Example 6:

[0047] This embodiment further extends the above embodiment, specifically as follows: Figures 5-6 As shown, the inner wall of the heating furnace 102 is provided with a heat insulation layer 111. The heat insulation layer 111 serves to insulate and keep the temperature, preventing the temperature inside the heating furnace 102 from escaping to the outside and reducing power consumption.

[0048] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A uniformly heated air-circulating furnace, comprising a base (101), wherein a heating furnace (102) and a protective railing (103) are mounted on the base (101), and a furnace door (104) is mounted on the heating furnace (102), characterized in that: The heating furnace (102) is equipped with an air guide hood (110), which is mounted on the heating furnace (102) by multiple bolts (113). The heating furnace (102) is equipped with a motor mounting base (112) and a suspension (116). A circulating motor (107) is mounted on the motor mounting base (112), and an impeller (114) is mounted on the output shaft of the circulating motor (107). The heating furnace (102), the furnace door (104), and the air guide hood (110) form a closed system. The impeller (114) agitates the airflow, causing it to flow from between the air guide shroud (110) and the heating furnace (102) toward the furnace door (104), and then flow back to the origin from the air guide shroud (110) away from the furnace door (104), thus forming a cycle; the heating furnace (102) is equipped with multiple radiant tubes (109), which are located between the heating furnace (102) and the air guide shroud (110), and the heating furnace (102) is equipped with a radiant tube power lead-out rod cover (108).

2. The uniformly heated air-circulating furnace according to claim 1, characterized in that: The radiant tube (109) includes a mounting head (118), on which a support rod (117) is mounted. The support rod (117) is provided with a plurality of limiting magnetic sleeves (120), and the limiting magnetic sleeves (120) are provided with a plurality of through holes. An electric heating rod (119) is mounted on the mounting head (118), and the electric heating rod (119) passes through the through holes of the limiting magnetic sleeves (120).

3. The uniformly heated air-circulating furnace according to claim 1, characterized in that: The heating furnace (102) is provided with a fresh air duct (105), which is inserted into the air guide hood (110) and is equipped with an electric butterfly valve.

4. The uniformly heated air-circulating furnace according to claim 1, characterized in that: The air guide shroud (110) is provided with a flow guide plate (115), which is arc-shaped.

5. The uniformly heated air-circulating furnace according to claim 1, characterized in that: A filter unit (106) is provided on the heating furnace (102), and the filter unit (106) is inserted into the heating furnace (102).

6. The uniformly heated air-circulating furnace according to claim 1, characterized in that: The inner wall of the heating furnace (102) is lined with a heat insulation layer (111).

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