Method for preventing water tank from freezing and cracking and toilet

Abstract

The invention provides a water tank frost cracking preventing method and a closestool. The water tank frost cracking preventing method includes the following steps that a control unit controls a valve to inject water to a water tank till the steady state water level Vm; after the control unit detects use signals or instructions of a user, water continues to be injected to the water tank till the flushing water level Vn, wherein n is a positive integer larger than or equal to one; the steady state water level Vm is at least smaller than the maximum of the flushing water level Vn. The water tank frost cracking preventing method is capable of protecting the water tank and reducing the freezing or frost cracking risk of the closestool water tank under the cold environment without affecting feeling of a user.

Description

technical field [0001] The invention relates to a method applied to a water tank and a toilet using the method, in particular to a method for preventing a water tank from freezing and cracking and a toilet using the method. Background technique [0002] In the field of sanitary ware, especially on the toilet water tank, a certain amount of water needs to be pre-stored in the water tank to facilitate flushing of the toilet. In a cold environment, since the same mass of water turns into ice at a low temperature, the volume will expand by about 10%. In order to prevent the water tank from freezing and cracking, it is necessary to use a material with high elasticity for the water tank. However, materials with high elasticity also limit the manufacturing process. For example, materials that are too soft will make it difficult to realize the process of splicing two parts to form a water tank. If hard plastic is used, the performance of the plastic will also change during multiple...

AI Technical Summary

Problems solved by technology

However, materials with high elasticity also limit the manufacturing process. For example, materials that are too soft will make it difficult to realize the process of splicing two parts to form a water tank.

If hard plastic is used, the performance of the plastic will also change during multiple freezing and thawing cycles, resulting in a reduction in the service life of the water tank

[0003] In order to prevent the water tank from being frozen, in some products, foam plastic is used to protect the inside or outside of the water tank, but this increases the cost and cannot resist water freezing under long-term low temperature

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