Air conditioner cooling unit and anti-freezing control method thereof

Abstract

The invention provides an air conditioner cooling unit and an anti-freezing control method thereof. The air-conditioner cooling unit comprises at least three temperature sensors. The anti-freezing control method comprises collecting the temperatures of the temperature sensors, and when all the temperature sensors break down, entering an anti-freezing mode; if at least one of the collected temperatures is lower than a first temperature threshold, entering the anti-freezing mode; when all the collected temperatures are higher than a second temperature threshold, exiting the anti-freezing mode. According to the air conditioner cooling unit, the water inlet, the water outlet and the inside of the shell tube of a shell-tube heat exchanger are provided with the temperature sensor, so that anti-freezing failure due to drifting or fault of certain temperature sensors can be avoided, effective anti-freezing effects on the shell-tube heat exchanger can be achieved, and the reliability of the shell-tube heat exchanger of the air conditioner cooling unit can be improved.

Description

technical field

[0001] The invention relates to the field of air conditioners, in particular to an air conditioner refrigeration unit and an antifreeze control method thereof. Background technique

[0002] The heat exchangers of current air conditioner refrigerating units mostly use shell-and-tube heat exchangers, which may be frozen and cracked if the water in them is not discharged in time when the heat exchanger is operated in a low-temperature environment such as winter. In addition, if the heat exchange of the refrigerant is too large and the temperature of the chilled water is too low, it may also cause the shell-and-tube heat exchanger to rupture.

[0003] At present, the shell-and-tube heat exchangers of general air conditioner refrigeration units only use one antifreeze temperature-sensing package for antifreeze detection, and the antifreeze temperature-sensing package is generally arranged in the shell tube of the shell-and-tube heat exchanger. The antifreeze cont...

Examples

Embodiment Construction

[0037] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0038] A refrigerating unit of an air conditioner, comprising a first temperature sensor arranged at the water inlet of the shell-and-tube heat exchanger for detecting the temperature of the water inlet;

[0039] A second temperature sensor arranged at the water outlet of the shell-and-tube heat exchanger is used to detect the outlet water temperature;

[0040] The third temperature sensor arranged in the shell tube of the shell and tube heat exchanger is used to detect the temperature inside the shell tube of the shell and tube heat exchanger;

[0041] It also includes an anti-freezing controller, which is electrically connected to the first temperature sensor, the second temperature sensor a...

technical field

[0001] The invention relates to the field of air conditioners, in particular to an air conditioner refrigeration unit and an antifreeze control method thereof. Background technique

[0002] The heat exchangers of current air conditioner refrigerating units mostly use shell-and-tube heat exchangers, which may be frozen and cracked if the water in them is not discharged in time when the heat exchanger is operated in a low-temperature environment such as winter. In addition, if the heat exchange of the refrigerant is too large and the temperature of the chilled water is too low, it may also cause the shell-and-tube heat exchanger to rupture.

[0003] At present, the shell-and-tube heat exchangers of general air conditioner refrigeration units only use one antifreeze temperature-sensing package for antifreeze detection, and the antifreeze temperature-sensing package is generally arranged in the shell tube of the shell-and-tube heat exchanger. The antifreeze cont...

Examples

Embodiment Construction

[0037] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0038] A refrigerating unit of an air conditioner, comprising a first temperature sensor arranged at the water inlet of the shell-and-tube heat exchanger for detecting the temperature of the water inlet;

[0039] A second temperature sensor arranged at the water outlet of the shell-and-tube heat exchanger is used to detect the outlet water temperature;

[0040] The third temperature sensor arranged in the shell tube of the shell and tube heat exchanger is used to detect the temperature inside the shell tube of the shell and tube heat exchanger;

[0041] It also includes an anti-freezing controller, which is electrically connected to the first temperature sensor, the second temperature sensor a...

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