The speed of the shaded-pole motor can be correlated with the energy efficiency of the oven, although the relationship may vary depending on the specific design and usage. Here are some possible influencing factors:

1. Air circulation: The shaded-pole motor can promote heat transfer and even distribution inside the oven by driving the fan to generate air circulation. When the air circulation is more efficient, heat is more easily transferred to the surface of the food, thereby reducing the hot and cold areas in the oven and improving energy efficiency. The appropriate shaded-pole motor speed can adjust the airflow intensity to achieve better energy efficiency performance.

2. Heating time: The speed of the shaded-pole motor can affect the heating speed inside the oven. Higher speeds increase the airflow intensity, allowing heat to be transferred to the surface of the food more quickly, thereby shortening the heating time. By reducing the heating time, the overall energy consumption of the oven can be reduced and the energy efficiency can be improved.

3. Energy loss: The shaded-pole motor in the oven will also produce a certain amount of energy loss, mainly from the efficiency of the motor itself and friction loss. Higher speeds may increase the power consumption of the motor, resulting in additional energy consumption. Therefore, when designing an oven, it is necessary to comprehensively consider the efficiency and energy consumption of the shaded-pole motor to achieve a reasonable energy efficiency balance.

It should be noted that the energy efficiency of the oven is also affected by other factors, such as insulation materials, sealing performance, efficiency of heating elements, etc. The shaded pole motor is only one component, and the impact of its speed on the energy efficiency of the oven needs to be considered comprehensively with the overall design and usage conditions of the oven. Therefore, in actual applications, oven manufacturers usually consider multiple factors comprehensively to improve the energy efficiency performance of the oven.