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Controller, air conditioner floor heating system and anti-freezing control method thereof

A control method and floor heating technology, which can be used in heating and ventilation control systems, hot water central heating systems, heating and ventilation safety systems, etc., and can solve problems such as frozen water modules, refrigerant leakage, and electronic expansion valve leakage.

Active Publication Date: 2020-09-01
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, when the air conditioner is cooling in summer, the water module of the floor heating module is closed, and the electronic expansion valve of the water module is also closed. and other reasons, resulting in the leakage of the electronic expansion valve, which in turn will lead to the leakage of refrigerant
[0003] If the evaporating temperature is lower than the freezing point after the refrigerant leaks, the water in the water module will freeze and expand, and there is a risk of freezing and damaging the water module

Method used

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  • Controller, air conditioner floor heating system and anti-freezing control method thereof
  • Controller, air conditioner floor heating system and anti-freezing control method thereof
  • Controller, air conditioner floor heating system and anti-freezing control method thereof

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Embodiment approach

[0113]This action can be understood as a primary anti-freezing action, that is, a reset operation of the electronic expansion valve 32 is performed. For example, when a is 0.5, b is 1.2, and A is 200. In one embodiment, the electronic expansion valve 32 is first controlled to open for 100 steps, and then closed for 240 steps after the fourth preset time length. The valve error leads to the situation of not closing dead. In this embodiment, the fourth preset time length is selected as 0.2s-1s, such as 0.2s, 0.5s, 0.8s, 1s, etc. The valve closing within this time can be understood as rapidly closing the valve. In this way, the electronic valve can be forced to The expansion valve 32 is reset. It should be noted that in other embodiments, a may also be 0.2, 0.6, 0.8, etc., b may be 1.1, 1.3, 1.4, etc., and A may be 180, 220, 300, etc.

[0114] Those skilled in the art can understand that the adjustment of the opening of the electronic expansion valve 32 is generally calculated...

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Abstract

The embodiment of the invention provides a controller, an air conditioner floor heating system and an anti-freezing control method thereof, and relates to the technical field of air conditioners. Theanti-freezing control method for the air conditioner floor heating system includes the steps of obtaining the temperature Tci of a liquid pipe of a water module, obtaining the temperature Tco of an air pipe of the water module, and if Tci is smaller than or equal to a first preset value and Tco is smaller than or equal to a second preset value, controlling the air conditioner floor heating systemto start an anti-freezing mode. The temperature Tci of the liquid pipe of the water module and the temperature Tco of the air pipe of the water module are obtained and compared with the preset values,if Tci is smaller than or equal to the first preset value and Tco is smaller than or equal to the second preset value, it means that an electronic expansion valve has a leakage phenomenon at that time, and if the evaporation temperature is lower than the freezing point after leakage of refrigerants, water in the water module will have a freezing and expansion phenomenon. By controlling the air conditioner floor heating system to start the anti-freezing mode, the temperature of the water in the water module can be improved, and the risk of frost damage to the water module can be lowered.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a controller, an air conditioning floor heating system and an antifreeze control method thereof. Background technique [0002] The air conditioning floor heating system can generally be understood as a multi-connected combined system of outdoor unit + indoor unit + floor heating module. Air conditioning is used for cooling in summer, and floor heating is used for heating in winter (air conditioning can also be used for heating). Generally, when the air conditioner is cooling in summer, the water module of the floor heating module is closed, and the electronic expansion valve of the water module is also closed. And other reasons, lead to electronic expansion valve leakage, which will lead to refrigerant leakage. [0003] If the evaporation temperature is lower than the freezing point after the refrigerant leaks, the water in the water module freezes and expands, which m...

Claims

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Application Information

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IPC IPC(8): F24F11/43F24F11/49F24F11/64F24F11/65F24F11/84F24F11/85F24F11/88F24D3/18F24D19/10F24F140/20
CPCF24D3/18F24D19/1009F24F11/43F24F11/49F24F11/64F24F11/65F24F11/84F24F11/85F24F11/88F24F2140/20
Inventor 王鹏帅
Owner NINGBO AUX ELECTRIC
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