电饭煲，作为一种专门用于做饭的厨房电器，似乎并不适合用来制作蛋糕。但是，有些人尝试使用电饭煲来制作蛋糕却遇到了一个普遍的问题——蛋糕发不起来。那么，为什么会出现这个问题呢？

首先，让我们来看看电饭煲的工作原理。电饭煲的主要功能是通过加热和蒸汽产生来煮饭。它通常有一个密闭的锅体和一个温控系统，可以在一定的时间内保持一定的温度。然而，蛋糕的制作过程需要更多的空气和热量，这可能与电饭煲的工作原理不太相符。

其次，电饭煲的容积和形状对蛋糕的发酵也有影响。由于电饭煲的容积比较小，空气流通性较差，因此无法提供足够的空间让蛋糕发酵。此外，电饭煲的形状通常是圆的或者类似于锅的形状，这也不利于蛋糕的均匀发酵。

另外，电饭煲的温控系统可能也是制作蛋糕失败的原因之一。电饭煲的温控系统设计用于煮饭，保持一定的温度。但是，蛋糕的制作需要更严格的温度控制，包括不同的发酵阶段和烘烤温度。电饭煲的温控系统很难提供这样的精确控制。

那么，如果你非常想尝试用电饭煲来制作蛋糕，有什么方法可以解决这个问题呢？首先，您可以尝试使用一个较大容量的电饭煲，以提供更多的空间供蛋糕发酵。其次，您可以调整发酵时间和温度，以适应电饭煲的工作方式。最后，您可以尝试在制作蛋糕之前，将蛋糕混合物在其他容器中进行初步发酵，然后再放入电饭煲中进行烘烤。

总之，电饭煲并不是一个理想的选择来制作蛋糕。由于其工作原理、容积和温控系统的限制，蛋糕很难在电饭煲中正常发酵。如果您真的想尝试用电饭煲来制作蛋糕，建议您尝试一些调整和改进的方法，但是成功的可能性仍然较低。

In English:

Using a rice cooker to make a cake may not be an ideal choice, as it is primarily designed for cooking rice. However, some people have attempted to use a rice cooker to make cakes and encountered a common problem - the cake does not rise. So, why does this happen?

Firstly, let's consider the working principle of a rice cooker. The main function of a rice cooker is to cook rice by heating and generating steam. It usually has a sealed pot and a temperature control system to maintain a certain temperature over a period of time. However, the process of making a cake requires more air and heat, which may not align well with the working principle of a rice cooker.

Secondly, the capacity and shape of a rice cooker also affect the cake's fermentation. Due to its small size and limited airflow, a rice cooker cannot provide enough space for proper fermentation. Moreover, the shape of a rice cooker is typically round or pot-like, which does not facilitate even fermentation of the cake.

Furthermore, the temperature control system of a rice cooker might also contribute to the failure of cake-making. The temperature control system in a rice cooker is designed for cooking rice and maintaining a specific temperature. However, making a cake requires precise temperature control for different fermentation stages and baking temperatures. It is challenging for the rice cooker's temperature control system to provide such accurate control.

So, if you still want to try making a cake using a rice cooker, what can you do to solve this problem? Firstly, you can try using a rice cooker with a larger capacity to provide more space for the cake to ferment. Secondly, you can adjust the fermentation time and temperature to accommodate the working style of a rice cooker. Lastly, you can try partially fermenting the cake mixture in a separate container before transferring it to the rice cooker for baking.

In conclusion, a rice cooker is not an ideal choice for making cakes. Due to its working principle, capacity, and temperature control limitations, it is difficult for a cake to properly rise in a rice cooker. If you are determined to make a cake using a rice cooker, it is recommended to try some adjustments and improvements, although the likelihood of success may still be low.