Internal air duct circulating system of microwave hot blast stove

Abstract

The utility model relates to the technical field of microwave hot blast stoves, and discloses a microwave hot blast stove inner air duct circulating system which comprises a shell, a stove cavity is fixedly installed in the center of the interior of the shell, and circulating air ducts are arranged on the periphery of the stove cavity. And the main motor is installed on one side of the inner wall of the shell, a wind wheel is arranged on the side, located on the circulating air duct, of the interior of the shell, the output end of the main motor is fixedly connected with the wind wheel, an air inlet for fresh air to enter is formed in the bottom end of one side of the shell, and an air inlet fan is fixedly installed on the side, located on the air inlet, of the bottom end of the inner wall of the shell. After the microwave hot air top-speed oven is started, the wind wheel runs, the electric heating pipe is heated, airflow in the inner cavity is sucked from the middle to be exhausted to the upper side and the lower side, penetrates through the catalytic filter, filters oil smoke generated by food barbecue and then is exhausted to the inner cavity from the top and the bottom, and the operation is repeated, so that the temperature of the inner cavity continuously rises, and the heating effect on the oven cavity is improved.

Description

Technical Field

[0001] This utility model relates to the field of microwave hot air furnace technology, specifically to an internal air duct circulation system for a microwave hot air furnace. Background Technology

[0002] A microwave hot air furnace is a composite industrial equipment that combines microwave heating technology with a traditional hot air circulation system. Its core feature is that it uses microwave energy to quickly and evenly heat the gas medium, while achieving efficient heat transfer through a heat exchange system. The air duct inside the hot air furnace is used to guide and transport the hot air.

[0003] For example, Chinese Patent CN106288376A discloses a pipe-type hot blast stove, which includes a furnace body, an air collecting chamber, a feeding port, an air inlet, an ash removal door, a chimney, a hot air outlet, an air duct, a combustion chamber, a blower, fan blades, a support, an ash storage chamber, lower layer grate bars, upper layer grate bars, and asbestos. The combustion chamber is located in the middle of the furnace body, and the hot air outlet is located on one side of the top of the furnace body. An air duct is located inside the furnace body, and the hot air outlet is connected to the air duct. An air collecting chamber is located on one side of the combustion chamber, and the air collecting chamber is connected to the air duct. The air duct is evenly and neatly coiled inside the furnace body. Asbestos is a thermal insulation material, and the air duct is filled with asbestos to reduce heat loss and prevent excessive temperature from damaging the machine body and causing economic losses. This device uses pipes to transfer heat energy, effectively solving the waste caused by heat loss during the transfer process. Moreover, the pipe transfer is targeted, enabling accurate and rapid drying or heating of materials, thus improving work efficiency. However, traditional hot air furnaces have internal air ducts mainly used to heat the furnace cavity through hot air delivery, which cannot achieve a continuous heating effect and has low heating efficiency. Therefore, a microwave hot air furnace internal air duct circulation system is proposed to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a microwave hot air furnace internal air duct circulation system, which has the advantages of continuously raising the internal temperature of the furnace cavity and solves the problem of low heating efficiency in traditional methods.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned goal of continuously raising the temperature inside the furnace cavity, this utility model provides the following technical solution: a microwave hot air furnace internal air duct circulation system, including a shell, a furnace cavity is fixedly installed in the center of the shell, and a circulation air duct is arranged around the furnace cavity;

[0008] The main motor is installed on one side of the inner wall of the housing. Inside the housing, on one side of the circulating air duct, there is a fan wheel, and the output end of the main motor is fixedly connected to the fan wheel.

[0009] Preferably, an air inlet for introducing fresh air is provided at the bottom of one side of the housing, and an air intake fan is fixedly installed at the bottom of the inner wall of the housing on the side of the air inlet. An air intake duct is provided inside the housing below the circulating air duct. By activating the air intake fan at the bottom of the interior, fresh air is introduced from the air inlet along the air intake duct.

[0010] Preferably, an electric heating element is fixedly installed inside the furnace cavity, and a catalytic filter is fixedly installed on the inner wall of the furnace cavity. When the electric heating element is activated, hot air is generated. At the same time, the main motor is activated to drive the fan wheel to rotate. The airflow is drawn in from the middle and discharged to the upper and lower sides, passes through the catalytic filter, filters the oil fumes generated by grilling food, and is then discharged into the inner cavity from the top and bottom.

[0011] Preferably, an air outlet is provided inside the housing above the circulating air duct. A rear fan is fixedly installed at the air outlet of the air outlet, and a magnetron is fixedly installed at the rear end of the rear fan. After heating is completed, the rear fan is started to discharge hot air along the air outlet.

[0012] Preferably, a cabinet door is hinged to one side of the housing, and the cabinet door is located at one end of the oven cavity. When heating food, the cabinet door needs to be opened and the food placed into the oven cavity.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides an internal air duct circulation system for a microwave hot air furnace, which has the following beneficial effects:

[0015] After the microwave hot air rapid oven is started, the fan wheel rotates and the electric heating element heats up. The airflow in the inner cavity is drawn in from the middle and discharged to the upper and lower sides, passing through the catalytic filter to filter the oil fumes produced by grilling food, and then discharged into the inner cavity from the top and bottom. This cycle repeats, causing the temperature in the inner cavity to rise continuously, thus increasing the heating effect of the oven cavity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall internal structure of this utility model.

[0017] In the diagram: 1. Shell; 11. Air inlet; 12. Air inlet duct; 13. Circulating air duct; 14. Air outlet duct; 2. Furnace cavity; 21. Main motor; 22. Fan wheel; 3. Rear fan; 31. Magnetron; 4. Cabinet door; 5. Inlet fan. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1 The present invention provides the following technical solution: a microwave hot air furnace internal air duct circulation system, including a shell 1, a furnace cavity 2 fixedly installed in the center of the shell 1, and a circulation air duct 13 arranged around the furnace cavity 2;

[0020] In this embodiment, an electric heating tube is fixedly installed inside the furnace cavity 2, and a catalytic filter is fixedly installed on the inner wall of the furnace cavity 2. When the electric heating tube is activated, hot air is generated. At the same time, the main motor 21 is activated to drive the fan wheel 22 to rotate. The airflow is drawn in from the middle and discharged to the upper and lower sides, passes through the catalytic filter, filters the oil fumes generated by grilling food, and is then discharged into the inner cavity from the top and bottom.

[0021] The main motor 21 is installed on one side of the inner wall of the housing 1. The inside of the housing 1 is provided with a fan wheel 22 on one side of the circulating air duct 13, and the output end of the main motor 21 is fixedly connected to the fan wheel 22.

[0022] In this example, preferably, an air inlet 11 for introducing fresh air is provided at the bottom of one side of the housing 1. An air intake fan 5 is fixedly installed at the bottom of the inner wall of the housing 1 on one side of the air inlet 11. An air intake duct 12 is provided inside the housing 1 below the circulating air duct 13. By activating the air intake fan 5 at the bottom of the interior, fresh air is introduced from the air inlet 11 along the air intake duct 12.

[0023] The housing 1 has an air outlet 14 located above the circulating air duct 13. A rear fan 3 is fixedly installed at the air outlet of the air outlet 14. A magnetron 31 is fixedly installed at the rear end of the rear fan 3. After heating is completed, the rear fan 3 is started to discharge hot air along the air outlet 14.

[0024] In this example, a cabinet door 4 is hinged to one side of the housing 1, and the cabinet door 4 is located at one end of the oven cavity 2. When heating food, the cabinet door 4 needs to be opened and the food placed into the oven cavity 2.

[0025] The working principle of this embodiment is as follows:

[0026] When in use, by starting the intake fan 5 at the bottom of the interior, fresh air is introduced from the air inlet 11 along the air inlet duct 12. The electric heating tube is started to heat the air and generate hot air. At the same time, the main motor 21 is started to drive the fan wheel 22 to rotate. The airflow is drawn in from the middle and discharged to the upper and lower sides, passes through the catalytic filter to filter the oil fumes generated by grilling food, and is then discharged from the top and bottom into the inner cavity to form a circulating air duct 13. This cycle repeats continuously, causing the temperature of the inner cavity to rise continuously.

[0027] After heating is complete, start the rear fan 3 to exhaust the hot air along the air outlet 14.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A system for circulating air in a microwave stove, characterized by comprising: include: The shell (1) has a furnace cavity (2) fixedly installed in the center of its interior, and the furnace cavity (2) is provided with a circulating air duct (13) around its perimeter. The main motor (21) is installed on one side of the inner wall of the housing (1). Inside the housing (1), on one side of the circulating air duct (13), there is a fan wheel (22), and the output end of the main motor (21) is fixedly connected to the fan wheel (22).

2. The inner air duct circulation system of a microwave hot air furnace according to claim 1, characterized in that: An air inlet (11) for introducing fresh air is provided at the bottom of one side of the housing (1), and an air intake fan (5) is fixedly installed at the bottom of the inner wall of the housing (1) on one side of the air inlet (11).

3. The inner air duct circulation system of a microwave hot air furnace according to claim 1, characterized in that: An air inlet duct (12) is provided inside the housing (1) below the circulating air duct (13).

4. The inner air duct circulation system of a microwave hot air furnace according to claim 1, characterized in that: An electric heating tube is fixedly installed inside the furnace cavity (2), and a catalytic filter is fixedly installed on the inner wall of the furnace cavity (2).

5. The inner air duct circulation system of a microwave hot air furnace according to claim 1, characterized in that: An air outlet duct (14) is provided inside the housing (1) above the circulating air duct (13). A rear fan (3) is fixedly installed at the air outlet of the air outlet duct (14), and a magnetron (31) is fixedly installed at the rear end of the rear fan (3).

6. The inner air duct circulation system of a microwave hot air furnace according to claim 1, characterized in that: A cabinet door (4) is hinged to one side of the shell (1), and the cabinet door (4) is located at one end of the furnace cavity (2).

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