Process cooling fan for food

Abstract

The utility model discloses a process cooling fan for food in the technical field of ventilation mechanical equipment, which comprises a fan shell and a flange joint surface for fixing with an assembly line support mechanism, a protective net is arranged on the fan shell, a motor seat plate is arranged in the fan shell, a B3 motor is arranged on the motor seat plate, an output shaft end of the B3 motor is in transmission connection with an impeller, and the impeller is in transmission connection with the fan shell. A junction box is connected outside the fan shell, and the fan is an axial flow fan with the diameter of an inner cylinder being 450 mm. According to the device, the impeller of the axial flow fan is driven by the motor to rotate, air is sucked in from the air inlet, the entering air is blown to a to-be-cooled dough cake under the pushing of blades of the impeller, the heat exchange of the dough cake is accelerated by utilizing air flow, and the heat on the surface of the dough cake is taken away by high-speed air flow generated by the fan, so that rapid cooling is realized; the method is suitable for being used in a food hot-processing process link.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation machinery and equipment, and in particular to an axial flow fan used in a food processing link. Specifically, it is a fan for cooling food heated on a conveyor belt, and is mainly used in a hot processing food process link. Background Art

[0002] In the production lines of some heat-processed foods (such as baked goods, meat products, and marinated products), the internal temperature will rise significantly during the heating and cooking process to achieve the purposes of sterilization and cooking. However, prolonged stay in a high-temperature environment will lead to the loss of food nutrients, deterioration of taste, and may even cause secondary reproduction of microorganisms, affecting food safety. In order to ensure its quality, taste, and safety, it is usually necessary to cool it quickly and effectively. This step not only affects the final quality of the food, but also directly affects production efficiency and cost control. Fan cooling technology uses the principle of air flow to accelerate heat exchange. The high-speed airflow generated by the fan removes the heat from the surface of the food, achieving rapid cooling. Due to its convenient installation and good performance, it is widely used in many scenarios.

[0003] In response to customer needs, there is a need to install cooling fans for cooling and heat dissipation on the noodle boiling production line. Since there is a large amount of water vapor after the noodles are heated, and the humidity and temperature in the workshop are relatively high, the fans used in the existing technology have the problem of water vapor condensation during the cooling process. The condensed water splashes and affects the quality of the noodles, and there is a risk of pollution caused by long-term operation. In addition, due to the influence of accumulated water and high temperature, the drive motor of the fan in the existing technology often fails and shuts down, affecting the operation of the production line, and there are many defects. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects in the prior art, provide a process cooling fan for food, optimize the shell structure to improve the air intake effect, improve the heat dissipation and cooling effect of the fan, improve the protective net to avoid condensation and water accumulation, and ensure the quality of noodles and food safety.

[0005] The purpose of the utility model is achieved as follows: A process cooling fan for food, comprising a fan housing and a flange interface for fixing to an assembly line bracket mechanism, a protective net being provided on the fan housing, a motor base plate being provided inside the fan housing, a B3 motor being provided on the motor base plate, an impeller being transmission-connected to the output shaft end of the B3 motor, a junction box being externally connected to the fan housing, and an axial flow fan having an inner cylinder diameter of 450 mm.

[0006] When the utility model works, the impeller of the axial flow fan is driven by a motor to rotate, sucking air from the air inlet, and under the push of the impeller blades, the incoming air is blown towards the noodle cake to be cooled. By utilizing the air flow, the heat exchange of the noodle cake is accelerated, and the high-speed air flow generated by the fan takes away the heat on the surface of the noodle cake, achieving rapid cooling.

[0007] Further, one protective net is provided at the front end of the air inlet of the fan and on one side of the impeller respectively.

[0008] Further, the protective net is made of stainless steel wires with a diameter of 1 mm spaced 10 mm apart by ring ribs, and the protective net is fixed to the fan housing by stainless steel bolts.

[0009] Further, the air inlet of the fan is a confluent air inlet with an enlarged external diameter.

[0010] Further, the B3 motor is made of aluminum shell material, and the rear cover is hermetically arranged.

[0011] Further, the blades and the hub of the axial flow fan are made of cast aluminum alloy material, and the blades are in the shape of an airfoil.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] First, the motor adopts an aluminum shell motor dedicated to the axial flow fan, and the rear cover of the motor is hermetically designed, eliminating the pollution problem of the self-fanning fan and solving the problem of insufficient protection level. Compared with the original B5 structure motor, it is lighter in weight and ensures stable and reliable operation functions.

[0014] Second, the air inlet of the fan is a confluent air inlet with an enlarged external diameter, in a horn shape, greatly increasing the internal flow channel space of the fan, contributing to the heat dissipation of the motor and the volatilization of water vapor, with better organization of the fan flow channel and improved working efficiency of the fan.

[0015] Third, the impeller and the motor of the fan are made of cast aluminum alloy material, with better corrosion resistance, which is beneficial to the long-term reliable operation of the fan in a humid and hot environment. The airfoil-shaped blade structure improves the flow guiding efficiency of the fan and reduces the operating noise.

[0016] Fourth, the cooling fan of this device is provided with protective nets at both the front and the back, and the density of the protective nets is reduced, reducing the possibility of capturing and condensing water vapor, greatly reducing the air duct resistance, and reducing the energy consumption loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the structural schematic diagram of the utility model Figure 1 。

[0018] Figure 2 is the structural schematic diagram of the utility model Figure 2 。

[0019] Figure 3 for Figure 2 Schematic diagram of the structure enlarged at point A.

[0020] Figure 4 It is a structural diagram of a cooling fan in the prior art.

[0021] Figure 5 This is a schematic diagram of the structure of the protective net in the cooling fan in the prior art.

[0022] Figure 6 This is a schematic diagram of the operation of the cooling fan on the noodle production line.

[0023] In the above picture, 1 is B3 motor, 2 is fan housing, 3 is protective net, 4 is impeller, 5 is junction box, 6 is air inlet, 7 is heating furnace, 8 is conveyor belt, 9 is receiving tray, 10 is support mechanism, 11 is dough. DETAILED DESCRIPTION

[0024] like Figures 1 - 3 The food process cooling fan shown includes a fan housing 2 and a flange interface for fixing to an assembly line support mechanism 10. A protective net 3 is provided on the fan housing 2, a motor base plate is provided inside the fan housing 2, and a B3 motor 1 is provided on the motor base plate. The output shaft end of the B3 motor 1 is transmission-connected to an impeller 4. A junction box 5 is connected to the outside of the fan housing 2. The fan is an axial flow fan with an inner cylinder diameter of 450 mm.

[0025] A protective net 3 is set at the front end of the fan air inlet 6 and one side of the impeller 4. The protective net 3 is made of stainless steel wire with a diameter of 1 mm and a 10 mm interval of ring ribs. The protective net 3 is fixed to the fan housing 2 by stainless steel bolts; a protective net 3 that is too dense and has too fine mesh ribs will easily capture water vapor in a hot steam evaporation environment, and it is still easy to condense water droplets even under the blowing of the fan airflow. In this device, the original 6-mesh stainless steel wire mesh is replaced with stainless steel wire with a diameter of 1 mm and arranged at intervals of 10 mm, which reduces the ability of the protective net 3 to capture and condense water vapor, and also greatly reduces the air duct resistance and reduces the energy loss of the fan.

[0026] The fan air inlet 6 is a collecting air inlet with an enlarged external diameter; increasing the internal flow channel space of the fan is more conducive to motor heat dissipation and water vapor volatilization, thereby improving the working efficiency of the fan.

[0027] The B3 motor 1 is made of aluminum shell and has a sealed rear cover, which can eliminate the problem of self-ventilating fan pollution and solve the problem of insufficient protection level. Compared with the B5 structure motor, it is lighter and easier to install.

[0028] The blades and hub of the axial flow fan are made of cast aluminum alloy, and the blades are airfoil-shaped; they have good corrosion resistance, ensuring the reliability of the fan's long-term operation in a hot and humid environment. The airfoil-shaped blades facilitate the introduction of air flow, reduce noise, improve the workshop working environment, and increase comfort.

[0029] When the present invention is working, air enters through the trumpet-shaped air inlet 6, the B3 motor 1 drives the axial flow fan impeller 4 to rotate, and the airfoil-shaped blades on the impeller 4 suck in the air and push the air to blow toward the noodles 11 to be cooled, using the air flow to accelerate the heat exchange of the noodles 11. The high-speed airflow generated by the fan takes away the heat from the surface of the noodles 11, achieving rapid cooling.

[0030] like Figure 4 、 5 The figure shows the structure of the cooling fan in the prior art. Figure 6 This is a schematic diagram of the operation of the cooling fan on the noodle production line. The fan is installed on a slightly inclined bracket mechanism 10, with the air outlet of the fan facing the noodle 11. The noodle 11 is cooled by the fan during the process of being conveyed from the heating furnace 7 to the conveyor belt 8, and then transferred to the receiving plate 9. In the prior art, the cooling fan uses a B5 structure motor, a fan is set at the tail of the motor, and the casing has an inner casing for installing the motor. The motor slightly protrudes from the fan casing 2. For operational safety, stainless steel protective nets 3 are installed in front and behind the fan casing 2. They are made of stainless steel wire with a mesh size of nearly 6. Because the protective net 3 is too dense and the mesh is too fine, it is too easy to capture water vapor in a hot steam evaporation environment. Even under the blowing of the fan airflow, it is still easy to condense water droplets. The structure of the casing is with an inner casing. Over time, steam and water accumulate inside the casing. When there is too much, it drips down along the flange bolt holes where the motor is installed and splashes onto the pancake 11, affecting product quality and appearance. In addition, due to the influence of the motor structure, the ventilation area of the air duct inside the fan is limited, and the airflow organization is not smooth, resulting in reduced overall efficiency of the fan and reduced air output. The built-in cooling fan accumulates dust and dirt after long-term operation, forming a pollution source with the accumulated water. In addition, since the shaft is output at the tail of the B5 structure motor, there is a problem of poor sealing. In the long run, the motor is prone to short circuit in a humid and hot environment, resulting in reduced customer satisfaction.

[0031] In this device, the B5-structured motor used in the prior art is updated to an aluminum shell motor dedicated to axial flow fans. The rear cover is sealed. For the B3 structure, the inner casing is removed, and the motor is directly installed on the motor seat plate of the fan housing 2. The air volume generated by the B3 motor 1 driving the impeller 4 is used for the surface heat dissipation of the noodle cake 11. The air inlet 6 of the fan is a collector-type air inlet with an enlarged external diameter, in a horn shape, which greatly increases the internal flow channel space of the fan, helps the motor to dissipate heat and the water vapor to volatilize, has better fan flow channel organization, and improves the working efficiency of the fan. The fan impeller 4 and the motor are made of cast aluminum alloy, with better corrosion resistance, which is beneficial to the long-term reliable operation of the fan in a humid and hot environment. The airfoil blade structure improves the flow guiding efficiency of the fan and reduces the operating noise. The cooling fan of this device is provided with protective nets 3 at both the front and the rear, and the density of the protective nets 3 is reduced, which reduces the possibility of capturing and condensing water vapor, greatly reduces the air duct resistance, and reduces the energy consumption loss, and is suitable for use in the process of hot processed food.

[0032] The utility model is not limited to the above embodiments. Based on the technical solutions disclosed in the utility model, those skilled in the art can make some substitutions and deformations to some of the technical features without creative labor according to the disclosed technical content, and these substitutions and deformations are all within the protection scope of the utility model.

Claims

1. A process cooling fan for food, comprising a fan housing and a flange joint surface for fixing to a pipeline support mechanism, characterized in that: A protective net is provided on the blower housing. A motor seat plate is provided inside the blower housing. A B3 motor is provided on the motor seat plate. The output shaft end of the B3 motor is drivingly connected with an impeller. A junction box is connected outside the blower housing. The blower is an axial flow blower with an inner cylinder diameter of 450 mm.

2. The food processing cooling fan according to claim 1, characterized in that: One protective net is provided at the front end of the blower air inlet and on one side of the impeller respectively.

3. The food processing cooling fan according to claim 2, characterized in that: The protective net is made of stainless steel wires with a diameter of 1 mm and spaced 10 mm by ring ribs. The protective net is fixed on the blower housing by stainless steel bolts.

4. The food processing cooling fan according to claim 2, wherein: The blower air inlet is a confluent air inlet with an enlarged external diameter.

5. The process cooling fan for food according to claim 1, wherein: The B3 motor is made of aluminum shell material and the rear cover is hermetically arranged.

6. The food processing cooling fan according to claim 1, wherein: The blades and hubs of the axial flow blower are made of cast aluminum alloy material, and the blades are wing-shaped.

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