The operation process of the hot air circulation oven, what is the hot air circulation oven

Oven safety operation procedures The oven should be used in accordance with the temperature range specified on the nameplate, and the oven must be well grounded. Flammable materials such as oil basins, oil drums, cotton yarn, cloth crumbs and other flammable materials shall not be stacked near the oven, and washing, scraping and spraying paint shall not be carried out next to the oven. It is necessary to prevent other objects from falling into the bottom of the oven and contacting the resistance wire, causing a short circuit.

Before turning on the oven, the power must be turned off. Do not leave during the heating process. Do not store items such as tools, equipment parts and oil volatiles in the oven.

The parts and painted items that have been washed with gasoline, kerosene, alcohol, banana water flammable liquid should be placed at room temperature for 15 to 30 minutes, and most of the flammable liquid can be put into the oven for baking after most of the flammable liquid has evaporated, and the room should be ventilated. The oven shall not be cleaned during operation, and shall not be wiped with gasoline. Non-metallic items are placed in the oven for heating, which must be carried out in accordance with the process regulations.

The ventilation gate must be opened before the oven drying oven works in case of **. Before use, check the automatic control device, whether the indication signal is sensitive and effective, and whether the insulation of the electrical circuit is intact and reliable. The tuning steps for the PID controller parameters are as follows:

1) First, pre-select a short enough sampling period for the system to work;

2) Only add the proportional control link until the critical oscillation of the system's step response to the input appears, and note the proportional amplification factor and critical oscillation period at this time;

3) Under a certain degree of control, the parameters of the PID controller are calculated by formula.

You can consult their company.

The hot air circulation oven generally has a heating pipe, and the oven with a circulating fan can be called a hot air circulation oven, because no matter what structure the oven is, the wind direction is horizontal or vertical, in the final analysis, the hot air circulates in it, so it can be commonly called a hot air circulation oven. The hot air circulating oven has a wide range of applications, which can dry all kinds of industrial materials, and is a general drying equipment.

The air circulation system of the hot air circulation oven adopts the fan circulation air supply mode, and the air circulation is uniform and efficient. The air source is driven by the circulating air supply motor (using a non-contact switch) to drive the wind wheel through the heater, and the hot air is sent out, and then through the air duct to the inner chamber of the oven, and then the used air is sucked into the air duct to become the air source for recirculation, heating and use. Ensure room temperature uniformity.

When the temperature value swings due to the action of opening and closing the door, the air supply circulation system quickly resumes the operation state until the set temperature value is reached.

Scope of application: hot air oven is suitable for baking chemical gas and food processing to be baked, ink curing, paint film drying, etc., widely used in electronics, motors, communications, electroplating, plastics, hardware chemicals, instruments, printing, pharmaceutical, PC board, powder, impregnation, spraying, glass, wood building materials, etcThe internal heat circulation is good, and the baked objects are heated evenly.

Features: 1. The hot air circulates in the oven, with high thermal efficiency and energy saving.

2. Using the effect of forced ventilation, there is an air duct in the oven, and the material is dried evenly.

3. The oven runs smoothly, automatically controls the temperature, and is easy to install and maintain.

4. It has a wide range of applications, can dry all kinds of materials, and is an ideal general drying equipment.

Hot air circulation oven is a very common oven equipment in pharmaceutical and other industries, it is not only energy-saving, but also durable, internal heat circulation, electrical control safe, accurate and reliable, and widely used!

1. Energy saving. It is the use of steam or electricity as the heat source, with the axial fan to the heat exchanger convection heat exchange method to heat the air, when the hot air laminar flow through the baking tray and the material for heat transfer, fresh air can come in from the air inlet, waste hot and humid air from the exhaust port, the whole system through this continuous replenishment of fresh air and continuous discharge of hot and humid air, to maintain the relative humidity in the oven.

Hot air circulation oven.

2. Strong durability.

Because the electric heater is sealed in the hot air circulation oven box, the contact surface with the outside air is small, so it is not easy to be oxidized and corroded.

3. Internal heat circulation.

Bake items evenly heated.

4. The electrical control is safe, accurate and reliable.

The structure is reasonable, the effective working area is large, the function is complete, the hot air circulation oven is simple to operate, easy to maintain and adjust, low noise, high reliability, low cost, low energy consumption and high production efficiency.

5. Widely used.

The air circulation system of hot air circulation oven adopts the fan circulation air supply mode, and the air circulation is uniform and efficient, so it has a wide range of applications in production, and the variety is also very complete, which is mainly suitable for the drying, heating and heat treatment of industrial and agricultural production, scientific research, medical and health, laboratory and other units of product test products.

Hot air circulation oven is often used to dry materials with higher temperature, why do so many companies choose hot air circulation oven as a dryer to produce their own products, what are its advantages, let's list its benefits one by one.

Point 1: Economical and practical, high output; Economical and practical because it is much cheaper than other equipment of the same size, and it is much larger than other equipment, and the one-time output is much higher, for production enterprises, the investment benefit ratio is much greater, so many enterprises choose because of its low price and good quality;

Point 2: Easy to maintain, simple and easy to use; The hot air circulation oven can be used without the operation of the lock, and it is simple to use, and the maintenance is also very convenient, if the parts are damaged, the replacement is simple, an ordinary electrician can complete the repair, and if there is a lack of function in the future, the transformation is relatively simple;

Point 3: It is very suitable for materials with high temperature requirements and no special requirements, and the one-time production volume is much more, because the materials that can be carried inside are much more than those of the same volume of vacuum drying ovens and other drying equipment.

Point 4: Good effect of energy conservation and emission reduction; We know that the same amount of energy can produce more products, then it means that it is more energy-saving, the definition of energy saving is not to say that what kind of power consumption must be achieved to be called energy saving, energy saving can be said to be less energy than the usual use of other equipment, the higher the output, that is, energy saving.

Hot air circulation oven.

One of the most distinctive features is the wind blast. The large-diameter centrifugal wind wheel is used to circulate the heat evenly.

The air blast can make the temperature spread rapidly, and the heating effect is more obvious.

However, the hot air circulation oven is not suitable for volatile items, such as powders and granules, that is, it is not suitable for the use of hot air circulation oven. I produce pearl powder, originally wanted to buy a hot air circulation oven, ignoring this problem will blow away, SUS suggested using a blastless oven or vacuum oven.

At the same time, to tell you, volatile items are strictly forbidden to be put into the box for heating and drying, for the heating of the first value of the material, it is best to install an independent temperature limiter.

The hot air circulation oven generally has a heating pipe, and the oven with a circulating fan can be called a hot air circulation oven, because no matter what structure the oven is, the wind direction is horizontal or vertical, in the final analysis, the hot air is circulating in it, so it can be commonly called a hot air circulation oven, such as electric blast oven, open door high temperature sterilization oven, etc. However, most of the so-called hot air circulation ovens in the general industry still refer to the ovens shown in the above figure, and other ovens are evolved from the ovens in the above picture, such as with the requirements of high temperature sterilization, the fan is changed to an air-cooled standardized ring fan, and the front and rear doors are opened, and the air duct has also been changed, so it becomes a bisect high-temperature sterilization oven. The hot air cycle shown in the picture above is divided into five standard models.

They are single-door bicycles, two-door two-car, two-door four-car, three-door six-car, and four-door eight-car.

Summary. Direct heating at the bottom of the oven and air-heat circulation are two different types of heating. Direct heating at the bottom of the oven means that there is a heating tube or heating element at the bottom of the oven that heats the food upwards by directly heating the bottom of the oven.

This method is suitable for foods that need to be heated quickly, such as bread, pizza, etc. Air-heat circulation means that there is a fan inside the oven to evenly heat the food in the oven by circulating air. This method is suitable for foods that need to be heated evenly, such as cakes, biscuits, etc.

Overall, direct heating at the bottom of the oven is suitable for foods that need to be heated quickly, while air-heat cycling is suitable for foods that need to be heated evenly. Different ovens may use different heating methods, and you need to choose the corresponding heating method according to the needs of the food.

Direct heating at the bottom of the oven and air-heat circulation are two different types of heating. Direct heating at the bottom of the oven means that there is a heating tube or heating element at the bottom of the oven that heats the food upwards by directly heating the bottom of the oven. This method is suitable for foods that need to be heated quickly, such as bread, pizza, etc.

Air-heat circulation means that there is a fan inside the oven to evenly heat the food in the oven by lifting the circulating air through a silver key. This method is suitable for foods that need to be heated evenly, such as cakes, biscuits, etc. In general, direct heating at the bottom of the oven is suitable for foods that need to be heated quickly, while air-heat circulation is suitable for bright foods that need to be heated evenly.

Different ovens may use different heating methods, and you need to choose the corresponding heating method according to the needs of the food.

What I asked was that dipping plastic is to heat the iron product in the oven, which of the two heating methods saves electricity, etc.

For the heating of the bent hood made of plastic-impregnated iron, there is little difference in energy consumption between the two methods of direct bottom heating and air-heat circulation, because they both need to consume the same amount of energy to heat the oven to a certain temperature. However, the air-heat circulation heating method can distribute the heat more evenly inside the oven, so that the iron products can be heated more evenly, and the local temperature of the iron products can be avoided from being too high or too low, so that the heating efficiency and heating quality can be improved, and the stove can reduce the waste of energy. Therefore, in the process of heating impregnated iron products, the wind-containing circulating heating method may save some energy slightly compared with the bottom direct heating method.

The hot air oven is the box. It is composed of three parts: heating wire and fan. The fan puts the heat on the heating wire. Blow it out to dry the item.