An antifreeze protection device for a cold and hot water unit and an antifreeze protection method for a cold and hot water unit

Abstract

The invention relates to the field of cold / hot water units, in particular to a cold-hot water unit anti-freezing protection device and method. The cold-hot water unit anti-freezing protection device comprises a temperature sensor for detecting the temperature of the environment to be detected, an alarm device, a controller and a self contained power pack for supplying power to the temperature sensor, the alarm device and the controller. The controller can receive the environment temperature transmitted by the temperature sensor and control the alarm device to give out an alarm. The anti-freezing protection device can be powered on to conduct anti-freezing detection and judgment after a cold / hot water unit is powered off and remind a user timely to prevent the cold / hot water unit from being frozen off, and the problems that basic anti-freezing protection control is invalid due to the fact that the cold / hot water unit is powered off while a user forgets to discharge water are solved, so that a water system of the cold / hot water unit freezes, and pipes are frozen and damaged are solved.

Description

technical field [0001] The invention relates to the field of cold and hot water units, in particular to an antifreeze protection device for a cold and hot water unit and an antifreeze protection method for a cold and hot water unit. Background technique [0002] The hot and cold water unit is an air-conditioning unit that provides users with hot and cold water. It uses renewable energy in the natural environment to dry the air, and it is an environmentally friendly, efficient and economical cooling method to obtain cold energy through the heat and moisture exchange between water and air. , has a lower cost of cooling equipment, can greatly reduce power consumption, and plays an important role in energy saving and emission reduction. Therefore, cold and hot water units are widely used. [0003] However, in winter use, especially in northern winter, the environment of the water system of the chiller and hot water unit will drop below 0°C. At this temperature, the water system ...

AI Technical Summary

Problems solved by technology

Therefore, the water in the hot and cold water unit system must be drained, otherwise it will cause the water system to freeze, the water pipeline will freeze and crack, and the refrigerant tube in the heat exchanger will freeze and crack, which will cause water to enter the fluorine system and cause a large loss

However, in the process of use, users often forget to turn on the water after the cold and hot water units are powered off, so the above hazards often occur, causing great losses to users

[0004] Based on the above description, there is an urgent need for an antifreeze protection device for cold and hot water units to solve the problem in the prior art that the water system freezes caused by the user forgetting to release water after the cold and hot water units are powered off. If it is cracked, the refrigerant tube in the heat exchanger will freeze and crack, which will cause water to enter the fluorine system and cause a large loss

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