Air conveying mechanism of heating furnace

Abstract

The utility model discloses an air conveying mechanism of a heating furnace, which belongs to the technical field of heating furnaces and comprises a mounting frame and a motor. A rotary output shaft of the motor is provided with an extension section and a mounting section located outside the furnace body, and the extension section is connected with an air conveying fan wheel used for conveying air to gas in the furnace body; vent holes communicated with the interior of the motor are formed in the end covers on the two sides in the axial direction of the motor; a heat dissipation fan wheel is installed on the installation section and used for driving air around the motor to pass through the interior of the motor from the ventilation holes, and when the motor drives the air conveying fan wheel to conduct air conveying stirring on gas in the furnace body of the heating furnace, the coaxially-connected heat dissipation fan wheel is driven at the same time; the heat dissipation fan wheel drives air around the motor to continuously pass through the interior of the motor, so that forced ventilation and heat dissipation are carried out on the motor, the heat dissipation efficiency of the motor for air conveying and stirring is effectively improved under the condition that a heat dissipation motor does not need to be additionally arranged, and the protection effect on the motor is better.

Description

Technical Field

[0001] This utility model relates to the field of heating furnace technology, and in particular to a wind conveying mechanism for a heating furnace. Background Technology

[0002] Chinese utility model patent CN218898098U discloses a wind-operated mechanism for an oven, including a fan wheel, a rotary actuator for driving the fan wheel to rotate, and an air duct body with airflow. The air duct body has an air inlet and a first air outlet and a second air outlet arranged opposite to each other. The air inlet is formed on the bottom surface of the air duct body, and the first and second air outlets are formed on the sides of the air duct body. The airflow is connected to the first air outlet, the second air outlet, and the air inlet, respectively. The fan wheel is located within the airflow, with its bottom end opposite to the air inlet, and its sides opposite to the first and second air outlets, respectively. The output end of the rotary actuator extends from the top of the air duct body. The air duct extends downwards into the air duct body and is assembled and connected to the impeller. The air duct has a first sidewall and a second sidewall located between the first and second air outlets, each facing the impeller. Each of the first and second sidewalls is an arc surface whose center is eccentrically arranged with respect to the centerline of the impeller. The center of the first sidewall is closer to the first air outlet, and the center of the second sidewall is closer to the second air outlet. The centerline of the impeller lies between the centers of the first and second sidewalls. This significantly improves airflow efficiency and ensures temperature uniformity throughout the system.

[0003] However, since the rotary drive (i.e. the motor) is close to the oven, the oven's surface temperature is prone to rise significantly due to lack of insulation, poor external insulation, or damage to the insulation structure. During long-term operation, the rotary drive heats up quite severely, and the lack of a heat dissipation structure design for the motor needs improvement. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution to address the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fan mechanism for a heating furnace, comprising a mounting frame and a motor mounted on the mounting frame, the motor being located outside the furnace body; the rotating output shaft of the motor has a mounting section located outside the furnace body and an extension section extending into the furnace body, the extension section being connected to a fan wheel for fanning the gas inside the furnace body; both axial end covers of the motor are provided with ventilation holes communicating with the interior of the motor; a cooling fan wheel is mounted on the mounting section, the cooling fan wheel being driven by the rotating output shaft to fan the air around the motor, thereby causing the air around the motor to enter the interior of the motor through the ventilation holes on the first end cover of the motor, and causing the air inside the motor to flow out of the interior of the motor through the ventilation holes on the second end cover of the motor.

[0006] As a further embodiment of this utility model, the cooling fan wheel is configured to drive the air around the motor to enter the motor through the ventilation hole on the first side end cover away from the fan wheel, and to drive the air inside the motor to flow out of the motor through the ventilation hole on the second side end cover near the fan wheel.

[0007] As a further embodiment of this utility model: the mounting section is located between the fan wheel and the second end cover of the motor.

[0008] As a further embodiment of this utility model: the cooling fan wheel is a centrifugal fan wheel, and the axial air intake of the cooling fan wheel corresponds to the ventilation hole on the second side end cover.

[0009] As a further embodiment of this utility model: the mounting bracket includes a cover-shaped connecting part connected to the second side end cover of the motor, the cover-shaped connecting part extending outward along the axial direction of the rotating output shaft to the furnace body connected to the heating furnace; the heat dissipation fan wheel is located inside the cover-shaped connecting part, the cover-shaped connecting part has an axial air inlet corresponding to the vent hole on the second side end cover, and the cover-shaped connecting part has a radial air outlet corresponding to the radial air outlet of the heat dissipation fan wheel.

[0010] Compared with the prior art, the beneficial effects of this technical solution are: when the motor drives the fan wheel to circulate and stir the gas in the furnace body of the heating furnace, it simultaneously drives the coaxially connected cooling fan wheel. The cooling fan wheel drives the air around the motor to continuously pass through the inside of the motor, thereby providing forced ventilation and heat dissipation for the motor. Without the need to add an additional cooling motor, the heat dissipation efficiency of the motor used for air circulation and stirring is effectively improved, and the protection effect of the motor is better.

[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] 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.

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

[0014] Figure 2 This is a schematic diagram of the heat dissipation gas flow of this utility model, which hides the fan wheel;

[0015] Figure 3 This is a schematic diagram of the structure of this utility model installed on the furnace body.

[0016] The corresponding labels in the attached diagram are explained as follows:

[0017] Motor-1, Mounting section-11, Extension section-12, Ventilation hole-13, Cooling fan wheel-14, First side end cover-15, Second side end cover-16

[0018] Fan wheel-2,

[0019] Cover-shaped connecting part -3, axial air inlet -31, radial air outlet -32.

[0020] Furnace body -100. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-3 An air circulation mechanism for a heating furnace includes a mounting frame and a motor 1 mounted on the mounting frame. The motor 1 is located outside the furnace body 100 of the heating furnace.

[0023] The rotating output shaft of the motor 1 has a mounting section 11 located outside the furnace body 100 of the heating furnace, and an extension section 12 extending into the furnace body 100 of the heating furnace. A fan wheel 2 for circulating air into the furnace body 100 is connected to the extension section 12.

[0024] Both ends of the motor 1 along its axial direction are provided with ventilation holes 13 that communicate with the interior of the motor 1. The two ends of the motor are the first end cover 15 and the second end cover 16, respectively.

[0025] A cooling fan wheel 14 is installed on the mounting section 11. When the cooling fan wheel 14 is driven by the rotating output shaft, it fans the air around the motor 1, causing the air around the motor 1 to enter the motor 1 through the ventilation hole on the first side end cover 15 of the motor, and causing the air inside the motor 1 to flow out of the motor 1 through the ventilation hole on the second side end cover 16 of the motor.

[0026] When the motor 1 drives the fan wheel 2 to circulate and stir the gas inside the furnace body 100 of the heating furnace, it simultaneously drives the coaxially connected cooling fan wheel 14. The cooling fan wheel 14 drives the air around the motor 1 to continuously pass through the interior of the motor 1, thereby providing forced ventilation and heat dissipation for the motor 1. Without the need to add an additional cooling motor, the heat dissipation efficiency of the motor used for air circulation and stirring is effectively improved, and the protection effect of the motor is better.

[0027] Preferably, the cooling fan 14 is configured to drive air around the motor 1 into the motor 1 through ventilation holes on the first end cover 15 of the motor 1 away from the fan wheel, and to drive air inside the motor 1 out of the motor 1 through ventilation holes on the second end cover 16 of the motor 1 near the fan wheel. When the heating furnace is working, the temperature inside the furnace rises. By controlling the air to enter the motor 1 from the area away from the furnace body 100 and then flow out of the motor 1 to the area near the furnace body 100, the ventilation and heat dissipation of the motor are effectively avoided due to the increased surface temperature of the furnace body 100 caused by poor external heat insulation or damage to the heat insulation structure.

[0028] In some embodiments, the mounting section 11 is located between the fan wheel 2 and the second side end cover 16 of the motor.

[0029] In some embodiments, the cooling fan wheel 14 is a centrifugal fan wheel.

[0030] The mounting bracket includes a cover-shaped connecting part 3 connected to the second side end cover 16 of the motor, and the cover-shaped connecting part 3 extends outward along the axial direction of the rotating output shaft to the furnace body 100 connected to the heating furnace.

[0031] The cooling fan wheel 14 is located inside the cover-shaped connecting part 3. The cover-shaped connecting part 3 has an axial air inlet 31 corresponding to the vent on the second side end cover 16, and a radial air outlet 32 ​​corresponding to the radial air outlet of the cooling fan wheel 14.

[0032] When the cooling fan wheel 14 is driven, the axial air intake of the cooling fan wheel 14 corresponds to the axial air intake port 31, so that the gas inside the motor 1 is continuously drawn out by negative pressure from the vent hole of the second side end cover 16, thereby forming a gas cooling route where the gas enters the motor 1 from the vent hole of the first side end cover 15 and then flows out from the vent hole of the second side end cover 16.

[0033] In this embodiment, through the position and structure of the cover-shaped connecting part 3 and the heat dissipation fan wheel 14, when the heat dissipation fan wheel 14 is driven, an exhaust path is formed where gas continuously enters from the axial air inlet 31 of the cover-shaped connecting part 3 and gas continuously exits from the radial air outlet 32 ​​of the cover-shaped connecting part 3. This forms a gas insulation layer with continuous airflow between the second side end cover 16 of the motor and the outer surface of the furnace body 100. The air continuously flowing in the gas insulation layer is a medium-temperature gas formed after the room temperature gas has cooled the inside of the motor 1. When the outer surface of the furnace body is at a high temperature due to poor external heat insulation or damage to the heat insulation structure, the gas insulation layer with continuous airflow forms a continuously cooling gas insulation layer, effectively reducing the impact of the high temperature of the furnace body's outer surface on the motor.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wind conveyor of a heating furnace, characterized by, It includes a mounting bracket, a motor mounted on the mounting bracket, and the motor is located outside the furnace body of the heating furnace; The motor's rotating output shaft has a mounting section located outside the furnace body of the heating furnace, and an extension section extending into the furnace body, the extension section being connected to a fan wheel for circulating air into the furnace body. Both ends of the motor along its axial direction are provided with ventilation holes that communicate with the interior of the motor. The mounting section is equipped with a cooling fan wheel. When the cooling fan wheel is driven by the rotating output shaft, it fans the air around the motor, causing the air around the motor to enter the motor through the ventilation hole on the first end cover of the motor, and causing the air inside the motor to flow out of the motor through the ventilation hole on the second end cover of the motor.

2. The air moving mechanism of a heating furnace according to claim 1, characterized by The cooling fan wheel is configured to drive the air around the motor into the motor through the ventilation holes on the first end cover away from the fan wheel, and to drive the air inside the motor out of the motor through the ventilation holes on the second end cover near the fan wheel.

3. The air moving mechanism of a heating furnace according to claim 2, wherein The mounting section is located between the fan impeller and the second end cover of the motor.

4. The air moving mechanism of a heating furnace according to claim 3, wherein The cooling fan wheel is a centrifugal fan wheel, and the axial air intake of the cooling fan wheel corresponds to the ventilation hole on the second side end cover.

5. The air moving mechanism of a heating furnace according to claim 4, wherein The mounting bracket includes a cover-shaped connecting part connected to the second side end cover of the motor, the cover-shaped connecting part extending outward along the axial direction of the rotating output shaft to the furnace body connected to the heating furnace; The cooling fan wheel is located inside the shroud-shaped connecting part, which has an axial air inlet corresponding to the vent on the second side end cover, and a radial air outlet corresponding to the radial air outlet of the cooling fan wheel.

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