An automatic edible fluid injection device of food frying machines, comprising:
- a machine body, including at least a support body;
- a food frying pot, including at least a hollow outer case body mounted on the support body, in which the outer case body is pivotally installed with a servo motor which is used to memorize an edible fluid adding angle in order to control the operating position of the outer case body, and the outer case body is recessively installed with a notch from the outside toward the inside, and the interior of the notch is pivotally installed with an inner frying pot whose bottom is pivotally installed with an inner pot motor;
- an edible fluid adding device, including a material feeding arm and a material feeding cylinder installed in connection with the material feeding arm, in which the material feeding arm is fixedly installed with a tilted material discharge fixing device such that an angle can be formed between the material discharge fixing device and the material feeding arm, and the material feeding cylinder is mounted on the support body and applied to control the material feeding arm to swing horizontally, and in which plural peristaltic pumps are installed on the support body, and the same amount of material containers and material tubes as each of the plural peristaltic pumps are respectively allocated, wherein each of the material containers is applied for filling and containing an edible fluid, and one side of the each of the materials tubes extends into each of the material containers and then passes around the peristaltic pump so as to detour to the material discharge fixing device to be fixed therein;
- a master controller, respectively connected to the servo motor, the inner pot motor, the material feeding cylinder as well as each of the peristaltic pumps,
- wherein the exterior of the outer case body is installed with a position difference sensing device connected to the master controller and applied to sense the start and end positions of the rotation of the outer case body in order to limit the outer case body to operate in this safe angle range, and the position difference sensing device also respectively includes a start position determination block, an end position determination block, a start sensing terminal and an end sensing terminal, in which the start position determination block and the end position determination block are respectively installed on a surface of the exterior of the outer case body in opposition to the support body, and the start sensing terminal and the end sensing terminal are respectively installed on a surface of the exterior of the support body in opposition to the outer case body, such that, when the outer case body rotates, if the start sensing terminal detects the start position determination block, or otherwise the end sensing terminal detects the end position determination block, then the master controller controls the servo motor to stop the rotation operation.