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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A method for controlling self-cleaning in indoor heat exchanger tubes through a controlled throttling device and compressor. The method achieves efficient cleaning of the tube interior by controlling the opening degree of the throttling device to a minimum, while maintaining a maximum opening. The compressor is specifically designed to operate at a predetermined cleaning frequency. This controlled approach ensures the tube remains clean while maintaining optimal heat transfer efficiency, eliminating the need for manual cleaning operations.

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A self-cleaning air conditioning system for electric vehicles that utilizes battery waste heat recovery. The system employs a refrigerant circuit and a cooling liquid circuit to achieve self-cleaning through energy exchange through a heat exchanger. The system's control logic dynamically switches between heating modes based on battery charge level, with heating modes transitioning from defrost to frost operation. This approach enables efficient use of battery waste heat while maintaining system cleanliness during charging and parking cycles.

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An air conditioner with a control unit that enables regular cleaning of the indoor heat exchanger by temporarily converting it into an evaporator and freezing or condensing its surface, thereby loosening and removing adhered oil and dust.

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A heating, ventilation, and air conditioning (HVAC) system that enables continuous water droplet generation during cleaning cycles, even in low-humidity environments. The system employs a novel approach to maintain water droplet production during cleaning operations, ensuring consistent cleaning performance even when humidity levels are low. This enables the system to maintain effective cleaning capabilities throughout the winter season.

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A cooling system with enhanced cleaning performance that addresses the conventional limitations of conventional defrosting operations. The system integrates a cleaning device with a control system that monitors the evaporator's performance and automatically activates cleaning when the evaporator's heat transfer capacity falls below a predetermined threshold. This optimized cleaning strategy ensures efficient dust removal while maintaining the evaporator's performance, unlike conventional defrosting methods that only remove frost. The system continuously monitors the evaporator's parameters to determine when cleaning is required, eliminating the need for manual intervention and preventing overheating.

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A self-cleaning system for air conditioning heat exchangers that enables continuous maintenance through advanced cleaning mechanisms. The system comprises a programmable gate array (FPGA), sensors, and control electronics that monitor the heat exchanger's performance and temperature. When the system detects excessive clogging, it initiates a targeted cleaning process using advanced cleaning mechanisms, such as ultrasonic cleaning, electrostatic charging, or mechanical scrubbing, to restore optimal heat transfer efficiency. The system integrates with the air conditioner's control system to automate the cleaning process, ensuring continuous operation while minimizing maintenance downtime.

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A self-cleaning control method for air conditioner indoor units that enables continuous cleaning of the heat exchanger without additional components. The method employs a proprietary process that utilizes the natural temperature of the indoor unit's heat exchanger during the frosting process to achieve effective sterilization. This approach eliminates the need for separate cleaning units, maintaining system reliability during the self-cleaning process.

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Dynamic cleaning of air conditioning heat exchangers through real-time monitoring of return air parameters and temperature differences. The system automatically determines optimal cleaning conditions based on operating mode and environmental conditions, enabling continuous cleaning cycles even when the system is not operating. This approach eliminates the need for manual cleaning schedules and ensures consistent cleaning performance across different operating conditions.

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Air conditioner self-cleaning control method that dynamically adjusts frosting and defrosting times based on indoor air humidity and evaporator dust concentration to optimize cleaning performance.

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Air conditioning system with self-cleaning functionality that enables effective cleaning of indoor heat exchangers through controlled water flow. The system comprises an indoor unit with integrated water storage and heating mechanisms, where the heating mechanism operates in two distinct modes: continuous heating of the water storage mechanism and a controlled shutdown mode. This dual-mode approach enables the system to maintain optimal operating conditions while preventing overheating and system damage during cleaning cycles.

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Air conditioner indoor unit with enhanced self-cleaning capability through a novel approach to maintaining its own cleaning system. The unit features a self-contained cleaning mechanism within the housing, where water is collected from the indoor unit's condensation system and then sprayed onto the heat exchanger for thorough cleaning. This eliminates the need for external steam generators and conventional cleaning methods, while maintaining optimal indoor air quality. The cleaning mechanism is integrated with the air duct system, allowing the unit to maintain a closed cleaning space while still providing airflow.

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Air conditioner with sequential freezing and thawing of indoor heat exchanger sections to prevent water accumulation and promote cleaning. The system employs a dual-stage heat exchanger configuration, where the upper section operates as a condenser and the lower section as an evaporator, with a controlled freezing and thawing sequence to maintain cleanliness.

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A self-cleaning control method for air conditioners that addresses the conventional cleaning limitations of conventional cleaning methods. The method employs a novel approach that combines electronic expansion valve operation with compressor frequency and fan speed control to achieve effective cleaning of the air conditioner's inner heat exchanger walls. The control unit automatically adjusts these parameters to optimize cleaning efficiency, particularly for areas with stubborn dirt adhesion.

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Air conditioning system with self-cleaning functionality that optimizes cleaning based on environmental conditions. The system features an integrated water storage mechanism and liquid storage mechanism that can be selectively activated to control cleaning modes. The system's heating mechanism is positioned in the water storage mechanism, allowing it to maintain a consistent temperature while the liquid storage mechanism is used for cleaning. This dual-temperature approach enables targeted cleaning based on the system's operating conditions, ensuring effective maintenance while minimizing downtime.

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Air conditioner with integrated self-cleaning mechanism that eliminates the need for frequent cleaning cycles. The system employs a unique refrigerant flow control strategy where the compressor supplies refrigerant to the indoor unit's heat exchanger through an electronic expansion valve. During the refrigeration phase, the first heat exchanger is cooled and then heated by continuously frosting its surface. This process continues during the heating phase, with the defrosted water being used to remove contaminants from the heat exchanger. The valve's opening degree is adjusted to maintain continuous frosting during both phases, eliminating the need for separate cleaning cycles.

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Self-cleaning method for air conditioning heat exchangers that enables efficient and reliable cleaning through temperature control. The method monitors the heat exchanger's temperature and adjusts the refrigerant flow rate to maintain a target condensation temperature. The system automatically transitions from cleaning mode to defrost mode when frost or ice buildup exceeds a predetermined threshold, ensuring continuous operation while maintaining performance. This approach enables precise temperature control for optimal cleaning efficiency while maintaining system reliability.

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A self-cleaning method for air conditioning heat exchangers that enables rapid and efficient defrosting while maintaining system performance. The method employs a temperature-based defrosting strategy, where the system automatically adjusts the evaporator temperature to match the ambient temperature of the heat exchanger being cleaned. This approach ensures uniform defrosting, reduces energy consumption, and maintains reliable system operation. The system continuously monitors the heat exchanger temperature and adjusts the defrosting parameters based on real-time conditions, enabling rapid and efficient cleaning while maintaining optimal system performance.

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A self-cleaning method for air conditioning heat exchangers that enables rapid and efficient defrosting through targeted temperature control. The method employs a dynamic temperature monitoring system that automatically adjusts the defrosting temperature based on ambient conditions. When the heat exchanger's operating temperature falls below a threshold, the system rapidly increases the temperature to prevent frost formation. This controlled defrosting process eliminates the need for manual cleaning, while maintaining optimal system performance and preventing damage to the heat exchanger. The system continuously monitors the heat exchanger's temperature and adjusts the defrosting parameters to maintain optimal conditions, ensuring efficient and effective cleaning while minimizing system downtime.

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Cleaning the air conditioner's indoor heat exchanger through a novel control method that utilizes condensation to remove dust and impurities. The control module monitors the heat exchanger's moisture levels and automatically triggers cleaning cycles when moisture reaches predetermined thresholds. This approach eliminates the need for manual cleaning, as the condensation process naturally removes dust and debris from the heat exchanger surfaces. The control module also optimizes condensation conditions to maximize water evaporation and dust removal efficiency.

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