Frying and roasting method and control device of food processor using hot air to fry and roast food
A technology of a food processing machine and a control device, which is applied in the direction of appliances, applications, and kitchen utensils for frying things in oil, and can solve the problems affecting the quality and taste of food cooking, inaccurate control of the temperature of the cooking cavity, and fluctuations in the temperature of the cooking cavity To avoid problems such as large amplitude, to avoid the service life and the burning of surrounding parts, reduce the impact, and ease the hot air flow
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Embodiment 1
[0040] Such as figure 1, the present embodiment provides a household electric oven, comprising an upper casing 1, a lower casing 2 and a fryer 7 for cooking food, the lower casing 2 is provided with a fryer, and the fryer 3 is detachably set In the cavity, the upper shell 1 is provided with a cover plate 11, the upper surface of the cover plate 11 and the inner wall of the upper shell 1 form an accommodating cavity 12, and the lower surface of the cover plate 11 and the fryer 3 form a In the cooking cavity, the upper housing 1 is provided with a hot air device, a control device, an air duct, and a temperature sensor 6. The hot air device includes a heating pipe 41 and a fan, and the fan includes a shaded pole motor 43 and fan blades 42. The shaded pole motor 43 drives the fan blade 42 to rotate. The control device and the motor are installed in the accommodating cavity 12. The control device includes an operation panel on the outer surface of the upper casing. The user selects...
Embodiment 2
[0065] Such as Figure 8 The difference between the method for controlling grilled food provided in this embodiment and that in Embodiment 1 is that it includes the steps of judging the speed of the fan:
[0066] Before the fan speed changes from An to An-1, first judge whether the speed An is the lowest speed. If the fan speed An is the lowest speed, it will always run at the An speed until the end of cooking; if the fan speed An is not the lowest speed, the fan will Will run at An-1 speed. By setting this step, the abnormal operation of the fan caused by the low fan speed can be prevented, and the fan can be prevented from working outside the working range, which affects the service life.
[0067] The remaining structural features of the electric oven described in this embodiment are the same as those in Embodiment 1, and will not be repeated here.
Embodiment 3
[0069] The difference between this embodiment and the first embodiment lies in that the driving circuit for controlling the speed of the fan is different.
[0070] In the fan drive circuit of this embodiment, no silicon controlled rectifier and related circuits are provided, but a parallel circuit of relays is used to control the speed of the fan. Such as Figure 9 , in this embodiment, the fan driving circuit includes a relay K and a plurality of resistors R, wherein the relay K1 is connected in series with the resistor R1, the relay K2 is connected in series with the resistor R2, the relay K3 is connected in series with the resistor R3, and then the series circuit of the above relays The two ends of the fan are connected in parallel and then connected in series with the circuit where the fan is located to form a fan drive circuit. The single-chip microcomputer sends a conduction signal to the relay circuit to control the conduction or disconnection of each relay, so that th...
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