Internal circulating air cooling device

Abstract

The invention discloses an internal circulating air cooling device which comprises a cooling chamber, wherein the cooling chamber is provided with a feeding hole and a discharging hole and has an insulation function, an internal circulating variable frequency fan is arranged above the cooling chamber, a mesh belt drive system is arranged at the bottom of the cooling chamber, an air inlet and two air outlet pipes are arranged below the internal circulating variable frequency fan, an upper port of the air inlet is communicated with the air outlet pipes, a lower port of the air inlet is communicated with the top of the cooling chamber, the two air outlet pipes are positioned on the left side and the right side of the cooling chamber, respectively, a heat resistor is arranged at the root part of the air outlet pipe on the right side, a heat radiating device cooled by air around the heat radiating device, a plurality of parallelly arranged heaters, an upper air spraying cavity and a lower air spraying cavity are sequentially arranged inside the cooling chamber from top to bottom, the upper air spraying cavity is communicated with the air outlet pipe arranged on the right side of the cooling chamber, and the lower air spraying cavity is communicated with the air outlet pipe arranged on the left side of the cooling chamber.

Description

Technical field: [0001] The invention relates to an internal circulating air cooling device, which belongs to the field of isothermal normalizing heat treatment devices. Background technique: [0002] The cooling chamber of the existing isothermal normalizing furnace generally includes two openings, which are respectively the inlet near the heating furnace and the outlet near the isothermal furnace. Isothermal furnace. Specifically, a fan is arranged on the top of the cooling chamber, the fan has an air inlet and an air outlet, and the air outlet communicates with the cooling chamber. The workpiece in the room is cooled by direct blowing. [0003] However, the cooling chamber of this isothermal normalizing furnace is not equipped with a curtain for the inlet and outlet of the isothermal furnace. The heating furnace reduces the temperature of the workpiece at the mouth of the heating furnace, causing the workpiece to drop in temperature, which does not conform to the isoth...

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Problems solved by technology

[0003] However, the cooling chamber of this isothermal normalizing furnace is not equipped with a curtain for the inlet and outlet of the isothermal furnace. Heating furnace, which reduces the temperature of the workpiece at the furnace mouth, causing the workpiece to drop in temperature, which does not conform to the isothermal normalizing process

If these workpieces with temperature drop are treated with the same heat treatment process, the physical properties of the workpieces will inevitably be inconsistent.

Furthermore, if the temperature of the workpiece is too low, it may even cause defective or waste products

In addition, in the existing cooling room, the fan absorbs the external natural wind into the interior, and the outdoor temperature changes in different regions due to morning, night and season, which affects the set process and makes the wind temperature unstable.

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