Intelligent type defrosting control system for heat pump

A control system and intelligent technology, applied in refrigerators, refrigeration components, fluid heaters, etc., can solve the problems of heat pump water heaters not being able to provide hot water normally, easy to reach below zero, and easy to frost on the evaporator.

Active Publication Date: 2018-09-18
GUANGZHOU THEODOOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The heat pump cycle can transfer the energy of the low-temperature heat source to the high-temperature heat source. The cycle often includes components such as compressor, evaporator, condenser and expansion valve. However, when the heat pump water heater operates at a lower outdoor temperature in winter, the surface temperature of the evaporator is easy to reach Below zero, the surface of the evaporator is prone to frost. Thick frost will block the air flow on the surface of the evaporator and affect the water heating capacity of the heat pump water heater. Long-term operation may cause a protective shutdown of the system ...

Method used

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  • Intelligent type defrosting control system for heat pump
  • Intelligent type defrosting control system for heat pump

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Embodiment Construction

[0021] The embodiments described below are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] refer to figure 1 , the present invention provides a defrosting control system for an intelligent heat pump. The present invention provides a defrosting control system for an intelligent heat pump. The defrosting control system includes: a condensed water receiving tray 2, a solenoid valve 3, a condensed water level detector 4, an evaporator temperature probe 5, an ambient temperature probe 6, a rain sensor 7, a timer 8 and a control unit 9 .

[0023] The condensed water receiving tray 2 is used to receive the condensed water generated by the defrosting of the evaporator 1, and the bottom of the condensed water receiving tray 2 is provided with a drai...

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Abstract

The invention discloses an intelligent type defrosting control system for a heat pump. The intelligent type defrosting control system for the heat pump comprises a control unit, an environment temperature probe, an evaporator temperature probe, a condensate water level detector, a rainwater sensor and a timer, and the bottom of a condensate water receiving tray is provided with a drainage opening.The position, away from the condensate water receiving tray, of the drainage opening is provided with a solenoid valve. The system performs defrosting judgment of the first time after sensing the starting-up operation time t1 of the heat pump and the temperature T1 of an evaporator coil; in the rainwater weather, the system senses the temperature T1 of the evaporator coil and the environment temperature TE and determines the defrosting time interval; in the non-rainwater weather, the system senses the condensate water level and conducts subsequent defrosting judgment with the defrosting timeof last time as reference; and after the defrosting process is started, after the temperature T1 of the evaporator coil is higher than the preset temperature TS2, the system quits from the defrostingprocess. By means of the intelligent type defrosting control system, the comfortable water using experience can be provided for users, and energy waste caused by frequent defrosting conducted in winter is avoided.

Description

technical field [0001] The invention relates to the field of water heaters, in particular to an intelligent heat pump defrosting control system. Background technique [0002] The heat pump cycle can transfer the energy of the low-temperature heat source to the high-temperature heat source. The cycle often includes components such as compressor, evaporator, condenser and expansion valve. However, when the heat pump water heater operates at a lower outdoor temperature in winter, the surface temperature of the evaporator is easy to reach Below zero, the surface of the evaporator is prone to frost. Thick frost will block the air flow on the surface of the evaporator and affect the water heating capacity of the heat pump water heater. Long-term operation may cause a protective shutdown of the system and affect the service life of the entire system. . [0003] Common defrosting methods include stopping the defrosting to let the frost on the surface of the evaporator melt by itsel...

Claims

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Application Information

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IPC IPC(8): F25B47/00F25B49/02F24H4/02F24H9/20
CPCF24H4/02F24H9/2007F25B47/00F25B49/02F25B2600/01F25B2700/2104F25B2700/2117
Inventor 苏舜辉邓伟杰谭飞
Owner GUANGZHOU THEODOOR TECH
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