Print or data tables and graphs. The test results are reflected from the following two points:
1. Monitoring data sheet. 2. Temperature trend graph. For details, please refer to
Part of the measurement data table and graph.
External structure part:
The exterior structure design of this precision oven: according to the ergonomic and spatial design, the appearance is beautiful, the operation is convenient, and the floor area is minimized.
1. The shell is made of t=1.2mm thick cold-rolled plate, and the surface is treated with high temperature spray paint (environmentally friendly outdoor powder) to prevent rust and corrosion.
The 2-layer rack tray is welded with stainless steel square tubes. Each layer of the rack can be taken out independently. The bottom of the oven is equipped with 4 universal wheels with brakes and four positioning feet (the feet can adjust the height of the oven and the ground).
 Hot part:
The stainless steel heat sink type heating pipes are installed at the air outlet of the oven fan impeller in a line, and the wind is evenly distributed.
Safety, avoiding the short circuit between phases caused by the compact wiring of the honeycomb heating tube, and avoiding potential danger. The opening of the heating tube terminal is shown on the rear side of the oven as shown in Figure 2, which avoids the heat transfer to the electrical components caused by the opening on the top and reduces the service life of the electrical appliance (generally, the temperature resistance of electrical appliances is below 45°C). ).
1: Baking categories: baking ovens, industrial ovens, ovens, LED photoelectric ovens, silicone rubber ovens, secondary vulcanization ovens, fuel oil, gas ovens, high temperature ovens, etc.
2: Drying category: constant temperature drying box, blast drying box, blast constant temperature dual-purpose box, vacuum drying box, vacuum defoaming machine, far infrared drying box, etc.
3: Test categories: electric heating incubator, light incubator, biochemical incubator, berry incubator, artificial climate box, high temperature and low temperature test box, 4: constant temperature and humidity box, resistance furnace, high temperature experimental furnace, etc.
5: Spraying category: water curtain Lian spraying cabinet, spraying cabinet, powder spraying cabinet and powder spraying equipment, etc.
6: Conveying category: PVC drying line, silk screen drying line, mesh belt baking line, UV baking line, tunnel furnace drying line, shelf baking line, hanging
7: Baking line, high temperature baking line, etc.
The internal working environment of the device:
The suitable temperature for precision hot air circulation oven is: normal temperature - 300°C
heating or drying, according to the different temperature of use to choose different
thermal element.
Oven working state test method and results:
The temperature difference can be controlled within ≤±1.5°C under constant temperature,
Test method Two-hour standard with 14 temperature sensors at any point
Test, fast heating time; low shell surface temperature, test data can be
Exhaust system description:
1. The top is equipped with a 0.75KW fan motor: 10.5-inch centrifugal fan impeller (ensures sufficient air volume). The large air volume circulation design mode compensates for the temperature difference caused by the oven during ventilation (cycle times: 7500 times/ H).
2. There are air inlet and air outlet, so that the turbid gas inside the oven is discharged to the outside, and fresh air flows in, reducing the turbid gas discharged from the product in the oven, so that the surface color of the product is more pure, and it is equipped with an air flow regulating valve that can be adjusted and changed at any time. The size of the air volume.
3. Description of our company and other companies' products (our air outlet pipe is insulated, and the temperature will not affect the top electrical appliances, while other companies discharge from the side, which causes the side temperature to be too high, and the side occupies a lot of space.
2. Description of the control principle:
1: First, turn on the leakage protection of the residual current action circuit breaker), and at the same time, the open-phase and phase-sequence protection relays work normally (the use of the open-phase and phase-sequence protection relays is to ensure the normal operation of the motor, so that the temperature can be fully circulated).
2: Turn on the power switch, the power indicator light is on, and the temperature control meter is powered. Use intelligent digital display thermostat KR1 for master control, KR2 for monitoring, and use K-type temperature sensing
The upper and lower distribution of the probe can more intuitively monitor the upper and lower temperature in the oven
3: Set the required temperature on the main temperature control meter, and set the over-temperature protection thermostat at the same temperature as the main thermostat. After the heating is turned on, if the over-temperature indicator light is on, the heating will stop. 4: Press the ON button, the fan indicator light turns on, the contactor pulls in, the fan starts to operate normally, and the temperature control output turns on solid state, the heating tube starts to heat, and the heating indicator light is on.
4: When the actual temperature of the main control temperature in the oven is close, the temperature control will start to compensate slowly.
5: When the main thermostat reaches the set temperature, it will enter the constant temperature state, and at the same time, it will automatically switch to the time relay timing < timing can be selected: boot timing, constant temperature timing or no timing. Adopt high-precision time relay 999 seconds/minute/hour adjustable>, constant temperature continues.
6: After the timing is completed, the buzzer will sound and the heating will stop and the fan will run normally until the power switch STP or OFF button SB1 is turned off.