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Introduction to Heat Pump Strong Heat Air Conditioner Patent

Traditional ordinary heat pump air conditioners have obvious industry shortcomings. When the outdoor temperature is below minus 10 ℃, the heating capacity decreases significantly, the heating efficiency drops sharply in extremely cold environments, the room temperature drops sharply during defrosting shutdown, the heating rate is slow, and the energy consumption is high. Zhongsong independently developed a complete set of patented systems for heat pump strong heating, with four patented structures as the core: jet enthalpy increasing compression cycle, dual loop enhanced heat exchange, intelligent uninterrupted defrosting, and low-temperature exclusive electronic control. The system reconstructs the heating cycle logic of air source heat pumps and breaks through the bottleneck of traditional heat pump low-temperature operation. This technology is an exclusive utility model patent of Zhongsong, which can achieve stable and efficient heating at minus 25 ℃, greatly improving low-temperature heating capacity and annual heating energy efficiency. It is compatible with two supporting patents: liquid cooling heat dissipation and vacuum free installation. It is an integrated heat pump solution that takes into account cold heating, energy conservation, quietness, and convenient installation.

Core working principle of Zhongsong liquid cooled air conditioner

The entire heat pump strong heating system consists of four core modules: a jet enthalpy increasing compression cycle system, a dual loop high-efficiency heat exchange structure, a hot gas bypass uninterrupted defrosting module, and a low-temperature intelligent electronic control system, which work together to form a low-temperature and high-efficiency heating closed loop.

（1） Jet enthalpy increasing compression cycle system (core patent)

The whole machine is equipped with a dedicated enthalpy increasing variable frequency compressor, and an independent air supply circuit is added internally. Under heating conditions, a portion of the medium temperature refrigerant is diverted and directly supplied to the middle section of the compressor. In low-temperature environments, replenishing refrigerant reduces the compression temperature difference inside the compressor, controls the exhaust temperature to not exceed the limit, and significantly reduces the operating load of the compressor.

The low-temperature refrigerant in the outdoor low-temperature air is fully absorbed and vaporized by the external evaporator, and then enters the compressor to complete the first stage compression; The supplementary air circuit synchronously participates in the compression process by adding refrigerant, increasing the total amount of gaseous refrigerant, and ultimately outputting high-temperature and high-pressure refrigerant with higher temperature and flow rate, which is sent to the indoor heat exchanger to release heat.

This cycle fundamentally solves the problem of insufficient heat absorption by the refrigerant and attenuation of heating capacity at low temperatures. Even in extremely low outdoor temperatures of minus 30 ℃, the refrigerant circulation flow rate remains stable, and there will be no heating fatigue or frequent frequency limiting protection.

（2） Double loop high-efficiency heat exchange structure

Adopting a dual optimized heat exchange circuit design for both internal and external units, the external unit evaporator is equipped with anti-corrosion fins to increase the low-temperature air contact heat transfer area. Even weak low-temperature heat can be fully absorbed by the refrigerant; Widening the pipeline of the internal condenser, implementing layered heat transfer, and releasing heat from the high-temperature refrigerant layer by layer to improve indoor heat transfer efficiency.

In the heating cycle, an auxiliary diversion pipeline is added to balance the flow rate of refrigerant inside the heat exchanger, avoiding local uneven heat transfer and concentrated frost formation; The outer layer of the pipeline is thickened with insulation layer to reduce heat loss during refrigerant transportation. At the same outdoor temperature, the effective heating capacity is increased by more than 30% compared to traditional heat pumps.

（3） Continuous defrosting module for hot gas bypass

Abandoning the traditional reverse direction defrosting mode, equipped with an independent hot air bypass patented structure. After frosting on the fins of the external unit, the system directly diverts the high-temperature and high-pressure hot air discharged from the compressor and passes it into the external unit heat exchanger to melt the frost layer, without the need to switch the refrigeration cycle. The indoor heat exchange circuit continues to maintain the heating state, with uninterrupted air supply and no significant decrease in room temperature.

The built-in temperature and humidity sensing probe collects real-time environmental data from the external unit, and the AI algorithm accurately determines the degree of frosting, avoiding ineffective frosting and energy waste when the temperature is too high; Intelligent adjustment of defrosting hot air flow rate, fast defrosting with small flow rate for thin frost, and automatic increase of hot air supply for thick frost, balancing defrosting speed and energy-saving effect. In rainy, snowy, high humidity, and low temperature environments, the frequency of defrosting is significantly reduced, and the continuity of heating is significantly improved.

（4） Low temperature exclusive intelligent electronic control system

Equipped with a customized electric control motherboard for heat pump strong heating, it has a built-in multi-stage low-temperature control program that automatically switches operating modes according to outdoor temperature. 5 ℃ or above ambient temperature environment, low-frequency energy-saving heating; In the low temperature range of 0 ℃ to minus 15 ℃, the enthalpy and pressure increasing mode is automatically activated to increase the heating capacity; In the extremely cold range of minus 15 ℃ to minus 30 ℃, the enthalpy increasing cycle is locked and continuously outputs at full load to ensure stable indoor heating.

The electronic control system synchronously links the liquid cooling and heat dissipation components, and uses condensed water circulation to cool the compressor during heating, suppressing high temperatures and further reducing the overall power consumption of the machine; Equipped with multiple logics including wide voltage adaptation, anti freezing protection, delayed air supply, and overload protection, it operates stably and reliably in complex environments.

Complete operation process of heat pump with strong heating

After switching the heating mode of the air conditioner, the four-way valve changes direction to switch the heat pump cycle. The outdoor air flows through the outdoor unit's encrypted evaporator, and the refrigerant absorbs the low-temperature heat in the air and vaporizes it. The low-temperature gaseous refrigerant enters the jet enthalpy increasing compressor, and the middle section synchronously supplements the medium temperature refrigerant to complete compression, producing high-temperature and high-pressure refrigerant that is transported to the indoor unit heat exchanger.
High temperature refrigerant releases a large amount of heat indoors, and hot air is evenly sent into the room through a pressurized air duct. After cooling and liquefying, the refrigerant returns to the outdoor unit through a throttling component, completing the basic heating cycle. After the accumulation of frost layer on the fins of the external unit, the system starts the hot air bypass defrosting, and the high-temperature hot air directly melts the frost, ensuring uninterrupted operation of indoor heating.
During the heating process, the electronic control system monitors the outdoor temperature, compressor exhaust temperature, and pipeline pressure in real-time, dynamically adjusting the compressor frequency, air supply flow rate, and fan speed; The condensed water generated by refrigeration is introduced into the liquid cooling pipeline of the external unit to circulate and cool the compressor, achieving strong heat, silent, and energy-saving synchronous operation. After shutdown, the system automatically starts the pipeline antifreeze program, and the pipeline will not freeze or crack when left at low temperature.

Core advantages of heat pump strong heat patented technology


Firstly, it provides stable heating in extremely cold conditions and does not decay at low temperatures. Continuous and efficient operation in an environment of minus 25 ℃, with a 30% increase in low-temperature heating capacity compared to ordinary heat pumps. In the harsh winter of northern China, there is no need to rely on electric heating assistance for heating, and the heating rate of the entire house is greatly accelerated.
Secondly, continuous defrosting ensures maximum heating comfort. Hot air bypass defrosting does not interrupt indoor hot air, preventing defrosting and blowing cold air, and sudden drops in room temperature. It is comfortable to maintain a constant temperature throughout the day in cold, rainy, and snowy weather, and there is no cold or hot stimulation for the elderly and children at home.
Thirdly, low temperatures save more electricity and lower heating operating costs. Jet enthalpy increasing cycle reduces compressor load, combined with liquid cooling assisted cooling, significantly improves energy efficiency under extreme cold conditions, and consumes significantly less electricity for long-term winter heating compared to traditional ordinary heat pumps.
Fourthly, the lifespan of the compressor has been significantly extended. The exhaust temperature of the compressor under heating conditions is controllable, avoiding overheating and aging of lubricating oil, burning out of coils, reducing after-sales failures such as cylinder jamming and fluorine leakage, and improving the durability of the entire machine.
Fifth, it is universally applicable and has dual advantages in both cold and warm weather in the north and south. Rapid dehumidification and heating in humid and cold winters in the south, and stable heating in severe cold winters in the north; In summer, liquid cooling technology can be synchronously used for cooling, and high-temperature outdoor units are not protected from overheating, resulting in a balanced performance of cooling and heating throughout the year.
Sixth, easy installation and compatibility with supporting patents. The heat pump strong heating model supports the installation of a medium loose vacuum sealed valve body without the need for a vacuum pump, simplifying the installation process; The anti-corrosion heat exchange structure of the whole machine is suitable for complex installation environments such as outdoor, humid, and dusty environments.
Seventh, multiple intelligent protection ensures safe and reliable use. Built in anti freezing, high voltage overload, low temperature delayed air supply, voltage adaptive, frost intelligent recognition multiple protection programs, can be stably used in rural areas, old residential areas, and low floors facing the street.

Strong Heat Patent Video Explanation

The video is divided into four parts to analyze and dissect the strong hot patents, intuitively helping you understand more content and view more on-site information!

Episode 3

Episode 4

Episode 1

Episode 2

Tip: For a more accurate description, the video is in Chinese!

Applicable scenarios

Residential whole house winter heating in cold regions, coal to electricity replacement heating equipment in rural areas, 24-hour heating for large living rooms and shops, wet and cold and shady apartment layouts in the south, low-temperature working conditions for high-rise west facing outdoor units in winter, fully decorated whole house constant temperature heating, offices, homestays and other commercial scenarios with uninterrupted heating for a long time.

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