Self Cleaning Evaporator Coil Technology

Automatically cleaning an evaporator in a heat pump air conditioner through a comprehensive maintenance cycle. The system enters automatic cleaning mode, with the indoor unit's evaporator fan turning off, compressor shutting down, and spray valve activating to clean the evaporator surface. The system then transitions to cooling mode, with the evaporator fan operating at its lowest setting and outdoor fan operating at its highest setting. In this cooling mode, the system combines condensed water, cleaning agent, and dust to form frost, which is then removed through the water tray. The system maintains continuous cleaning through a spray valve that can be manually controlled during the cleaning cycle.

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A self-cleaning heat pump evaporator fin and its module control system that eliminates the need for separate water tanks and cleaning systems. The system incorporates an automatic cleaning device integrated into the heat exchanger, which employs a rotating nozzle to clean the fin surfaces. The device is mounted on a frame outside the heat exchanger and controlled by the module's electronic expansion valve. The system also features a four-way valve with integrated dry filters to prevent system contamination. The air-cooled heat exchanger includes multiple liquid dispensing heads, a dry filter, and a second dry filter to maintain system integrity.

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A method and device for self-cleaning an air conditioner's evaporator, enabling small air conditioners to automatically remove dust and debris without user intervention. The system detects evaporator clogging, then controls a two-way valve to create frost on the evaporator surface, which is then easily removed through the normal refrigeration cycle.

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Air conditioner with enhanced cleaning operation, comprising an indoor unit with an evaporator, an outdoor unit with a compressor, and a controller. The controller executes a cleaning operation by operating the compressor at a frequency higher than the upper limit frequency during the cleaning operation, thereby rapidly condensing moisture on the evaporator surface. The controller can also control the compressor frequency, refrigerant flow, and air flow to optimize cleaning performance in multi-unit configurations.

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Control method for self-cleaning of dual-evaporator air conditioners that enables continuous operation during self-cleaning cycles. The method ensures that both evaporators remain operational during self-cleaning, maintaining normal cooling or heating conditions while the cleaning process occurs. This approach prevents the conventional freeze-thaw process that occurs when air conditioners are in self-cleaning mode. The method enables the dual-evaporator system to maintain consistent user experience during self-cleaning cycles, with the first evaporator transitioning to self-cleaning mode while the second evaporator maintains normal operation.

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An air conditioner system with a dual indoor unit configuration, where one unit performs a cleaning operation by functioning as an evaporator to remove condensation, while the other unit operates as a conventional heater. The cleaning unit's fan is reversed to blow air into the room, preventing water splashing and direct air exposure. The system allows for simultaneous heating operation in the second unit during the cleaning process, with the cleaning operation resuming after the heating cycle completes.

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An air conditioner with an evaporator cleaning function that automatically performs rapid freezing, thawing, and drying of contaminants on the evaporator coil during cooling operation. The system employs a unique dual-cycle approach: during cooling, the evaporator coil freezes due to rapid cooling, followed by a controlled thawing and drying process that removes contaminants. This approach eliminates the need for reverse cycle operation, making it suitable for air conditioners that cannot perform the reverse cycle or do not have a condenser unit. The system also enables high-temperature sterilization of the evaporator coil after cleaning.

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Air conditioning system and vehicle that utilize a novel evaporator cleaning mechanism to maintain system performance and passenger comfort. The system integrates a built-in cleaning module that monitors and controls the evaporator's cleaning needs through an integrated input unit. The cleaning module sends signals to both the temperature damper and evaporator control units, enabling the system to automatically activate cleaning cycles when necessary. This integrated approach eliminates the need for separate cleaning systems while maintaining optimal system performance.

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A self-cleaning control method for indoor heat exchangers in air conditioning systems that eliminates the need for regular cleaning. The method employs a controlled evaporation mode where the indoor unit operates in cooling mode while the outdoor unit maintains normal cooling operation. The indoor unit's surface temperature is monitored continuously, and when it exceeds a predetermined threshold, the system switches to condensation mode. During this phase, the indoor unit operates in cooling mode while the outdoor unit maintains normal heating operation. The system then transitions back to evaporation mode, gradually warming the surface through condensation. This controlled approach eliminates the need for frequent cleaning while maintaining system performance and indoor comfort.

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Air conditioner with enhanced indoor heat exchanger cleaning efficiency. The system employs a controlled evaporator mode that automatically switches between evaporator and condenser functions based on temperature monitoring. When the system reaches a predetermined temperature threshold, it automatically transitions to evaporator mode, allowing the indoor heat exchanger to freeze and then maintain this state until the temperature drops below the threshold. The controller maintains the condenser and fan in a stop state during this process, preventing water accumulation. This approach significantly improves indoor heat exchanger cleaning performance compared to traditional continuous operation.

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A self-cleaning system for vehicle air conditioning systems that eliminates the need for manual cleaning of the evaporator. The system employs a unique combination of ultraviolet (UV) disinfection and specialized cleaning agents that target microorganisms and contaminants on the evaporator surfaces. The system includes a UV disinfection module, a cleaning agent reservoir, and a UV lamp, which are integrated into the vehicle's air conditioning system. The UV lamp is positioned to target the evaporator surfaces, while the cleaning agent reservoir provides a continuous supply of disinfectant. The system's advanced cleaning technology ensures thorough coverage of the evaporator surfaces, eliminating the need for manual cleaning and its associated risks.

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A method and device for self-cleaning evaporator surfaces of household air conditioners that eliminates the need for traditional frosted surfaces. The device achieves this through controlled operation of the indoor fan during the heating mode, preventing water droplets from forming at the air outlet. This eliminates the common issue of water droplets accumulating on evaporator surfaces, which can compromise cleaning effectiveness.

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Air conditioner with automated evaporator cleaning through a novel combination of condensation and mechanical removal. The system employs a compressor module to create condensation on the evaporator surface, followed by a fan module that blows away the condensed water and dust particles. The system continuously monitors and automatically activates the cleaning process based on evaporator surface conditions, eliminating the need for manual maintenance or professional intervention.

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A system for optimizing the temperature of the refrigeration system's evaporator heat exchanger through condensate cleaning. The system employs a dedicated condensate cleaning device that operates in conjunction with the evaporator's temperature control system. The device continuously monitors and adjusts the evaporator temperature to maintain a temperature above freezing, thereby preventing condensate buildup on the heat exchanger surface. This enables the system to automatically clean the evaporator surface through the condensate, maintaining optimal evaporator performance and extending the system's lifespan.

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Automotive air conditioning system with automatic cleaning of the evaporator and its associated dust collection mechanism. The system employs a control unit that monitors the air conditioning system's operation and automatically initiates cleaning cycles when the evaporator and surrounding areas become contaminated. This feature enables continuous maintenance of the air conditioning system while minimizing driver inconvenience. The system integrates with the vehicle's HVAC control unit to manage airflow and blower motor operation.

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A novel air conditioning self-cleaning method for maintaining heat exchanger cleanliness in air conditioning systems. The method employs a combination of ultrasonic cleaning and advanced surface treatment technologies to effectively remove stubborn oil stains from heat exchanger surfaces. The cleaning process involves a series of ultrasonic cleaning cycles followed by a specialized surface treatment that enhances the cleaning effectiveness of the ultrasonic cleaning process. This integrated approach ensures comprehensive removal of oil stains while maintaining the system's performance and energy efficiency.

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Air conditioning system with self-cleaning capability that optimizes performance through real-time monitoring of operating conditions. The system integrates a self-cleaning mechanism with a control system that continuously monitors the air conditioning system's operation time and evaporation rate. When the system reaches predetermined thresholds, it initiates cleaning cycles to maintain optimal performance and prevent premature degradation. This approach enables the air conditioning system to maintain its operational state while minimizing maintenance downtime.

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Air conditioner self-cleaning control method that dynamically adjusts compressor parameters based on coil temperature to improve cleaning efficiency and prevent issues like ice blockage or overheating. The method involves controlling the compressor frequency and output during cleaning stages based on the current coil temperature range. This targeted cleaning strategy more effectively removes dirt and dust.

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A self-cleaning control method for air conditioners that improves efficiency by optimizing when to switch between self-cleaning mode and cooling/heating modes based on indoor temperature. The method involves initially entering self-cleaning mode to frost the coil, but then switching back to cooling/heating mode if running time exceeds a threshold and temperature hasn't dropped enough. This prevents overcooling from fan off and speeds up cleaning. It also limits temperature ranges for self-cleaning vs normal operation to avoid excessive heating/cooling.

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Method and device for self-cleaning an air conditioner that prevents thermal expansion and contraction sounds during the cleaning process. The method adjusts compressor frequency and exhaust temperature based on the temperature difference between the evaporator coil and fins, maintaining a stable temperature difference within a preset range to prevent excessive temperature fluctuations.

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