Drinking machine with refrigerating cabinet

Abstract

The invention provides a drinking water machine with a freezer, comprising a control unit, a compressor, a cold water temperature sensor and a freezer temperature sensor. The control unit receives the cold water temperature signal of the cold water temperature sensor, compares the cold water temperature value which is gained from the cold water temperature signal with a cold water icing critical temperature value, and controls the compressor by the comparison result. The control unit of the drinking water machine with the freezer receives the cold water temperature signal of the cold water temperature sensor, compares the cold water temperature value which is gained from the cold water temperature signal with the cold water icing critical temperature value, and gains a detailed comparison result when the cold water temperature is lower than the cold water icing critical temperature value, and controls the shutdown of the compressor by the comparison result, thus ensuring that the cold water does not freeze.

Description

technical field [0001] The invention relates to a refrigeration control system, more precisely a water dispenser with a refrigerator. Background technique [0002] Water dispensers have been developed to this day, and there are many "multifunctional" water dispensers, that is, in addition to providing drinking water, there are also functions such as a "refrigerated cabinet" (similar to a refrigerator), a disinfection cabinet, and a storage cabinet. It is designed by taking advantage of the abundant space of the water dispenser to meet other needs of the majority of users. [0003] The refrigeration pipeline and principle of a commonly used compressor for a water dispenser with a refrigerator are as follows: figure 1 As shown, the entire refrigeration pipeline system includes a compressor 10, a condenser 11, a filter 12, a capillary tube 13, a cold water evaporator 14, a refrigerator evaporator 15 and a closed communication pipe, which is filled with "refrigerant" After the...

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Problems solved by technology

[0004] The circuit diagram of the above control system is shown in figure 2 As shown, the temperature switch 16 and the temperature switch 17 are general temperature switches, and each temperature switch can only set a fixed minimum temperature value and a maximum temperature value, and the temperature switch 16 and the temperature switch 17 are connected in parallel to control the compressor 10, while in the above pipeline The cold water evaporator 14 and the refrigerator evaporator 15 are connected in series. Combining the above points, when the temperature of the cold water reaches the minimum temperature, the refrigerator cannot reach the minimum temperature because the refrigerator contains a large number of items and the temperature required by the refrigerator is lower than the temperature of the cold water. , so the compressor 10 will continue to work, and the temperature of the cold water will continue to drop. Ice, causing the phenomenon of "the freezer has not reached the set temperature, but the cold water has frozen"

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