Factors to consider when purchasing a hot air circulation oven

1. Consider the size of the hot air circulation oven: This refers to production capacity. From an external perspective, the larger the oven, the greater its production capacity, but also the higher its purchase cost. Production capacity is determined by several factors, including the electrical heating power, the characteristics of the product, and the production space available. Generally, consider the number of carts (racks for the baking trays; some ovens don't require baking trays, such as for drying chickens and ducks). There are single-door, single-carriage, two-door, two-carriage, two-door, four-carriage, and four-door, eight-carriage models. Each cart can accommodate 10 baking trays, each measuring a standard 640*460*50 mm. This helps you calculate your desired production capacity and select the appropriate hot air circulation oven.

2. Consider the material type: The material type determines the structure and characteristics of the hot air circulation oven. For example, if the material is powdery, a hot air circulation oven should not be used. A vacuum drying oven can be used (the wind may carry the material out of the oven). Similarly, materials that are sensitive to high temperatures require careful consideration.

3. Choose the appropriate structure based on the characteristics of your material: The hot air circulation oven's air circulation system uses a fan-driven circulation system for uniform and efficient air circulation. The air is supplied by a circulating air motor (using a contactless switch), which drives a blower through the heater, discharging hot air. This air is then drawn into the oven chamber through the air duct, where it is drawn back into the duct as the air source for further heating, ensuring uniform temperature. If the temperature fluctuates due to door opening and closing, the air circulation system quickly resumes operation until the set temperature is reached. Hot air circulation oven structure types: Hot air circulation ovens offer horizontal and vertical air supply. The appropriate structure can be selected based on the characteristics of your material.

4. Material selection: For all drying equipment, the choice of production material is a major factor directly affecting the purchase price. Different materials often have significant price differences. The prices of stainless steel, iron plate, and plated metal plate vary significantly, and different types of stainless steel also have price differences.

5. The relationship between the temperature range of a hot air circulation oven and the operating temperature. For operating temperatures below 290°C, it is recommended to select an oven with a temperature range of RT + 10 to 300°C. For operating temperatures between 300°C and 450°C, a high-temperature oven (drying oven) with a temperature of 500°C is recommended. For operating temperatures between 450°C and 560°C, a high-temperature oven with a temperature of 600°C is recommended.

6. The temperature uniformity of a hot air circulation oven is a crucial performance characteristic and a key indicator of oven quality. During the constant temperature stage of the oven, although the temperature of the control instrument is generally stable, the temperature at different points within the oven varies, resulting in different heating effects on samples at different locations.