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44 "internationally leading" technologies
World Leading Technologies
Household air conditioner
compressor

Three cylinder two-stage variable volume compressor

The three cylinder two-stage variable volume compressor independently created by Gree has won the "international leading" appraisal. It can realize wide temperature operation in extreme environment and powerful heating at ultra-low temperature. Even if it is minus 35 degrees outside, it can reach 25 degrees indoors.
  1. ＊ - 15 ℃ heating without attenuation, - 35 ℃ ultra-low temperature stable heating
  2. ＊ Stable operation within a wide temperature range of - 35 ℃~54 ℃
  3. ＊ Cancel auxiliary heating methods such as electric auxiliary heating

According to the inspection of an authoritative third-party organization, the Gree cabinet air conditioner equipped with a three cylinder double unit variable volume compressor can reach 25 ℃ in the pure heat pump heating room under the outdoor temperature of - 35 ℃.

compressor

Double stage enthalpy increasing frequency conversion compressor

The two-stage enthalpy increasing frequency conversion compressor independently created by Gree has won the appraisal of "international leading". It can realize super high temperature and powerful refrigeration, super low temperature and powerful heating, super large refrigeration and heating capacity, without fear of temperature change.
  1. ＊ - 30 ℃ ultra-low temperature stable heating
  2. ＊ Stable operation within a wide temperature range of - 30 ℃~54 ℃
Air supply technology

Distributed air supply technology

Gree pioneered the temperature balanced three-dimensional air supply technology to solve the pain points such as uneven indoor temperature, cold air blowing, and warm hot air. Among them, the cabinet air conditioner is equipped with distributed air supply technology, which has won the "international leading" appraisal. Multi wing centrifugal fans are arranged in an efficient way, and the air volume of the double air outlets is precisely proportioned to realize the air flow from top to bottom and the distribution of cold and warm air. Every corner is the temperature you want.
  1. ＊ Shower cooling, cold air does not blow directly, cool but not cold
  2. ＊ Carpet heating, warm feet with hot air, warm but not hot
The second generation Gree cold external machine
Upgrade the quality from inside to outside, easily cope with abnormal weather and challenge the operation of wide temperature range.
  1. ＊ 60 ℃ high temperature refrigeration operation, enjoying cool summer
  2. ＊ - 35 ℃ low-temperature heating start, warm as expected
  3. ＊ Quick cooling and heating, instant comfort
Two way flow fresh air ventilation technology
Gree independently developed a two-way flow fresh air ventilation system, actively discharged indoor turbidity, introduced outdoor purified fresh air, fresh oxygen, clean, temperature control and multi-dimensional rejuvenation, two-way ventilation is the real fresh air!
  1. ＊ Two way flow fresh air ventilation makes the indoor air refreshing
  2. ＊ High efficiency full heat exchange, energy saving and more comfortable
Constant temperature defrosting technology
Gree independently developed constant temperature defrosting technology to solve the problem of frequent defrosting of air conditioners in the Yangtze River basin and other regions in winter, so as to achieve continuous heating without shutdown, and defrosting without sudden cooling.
  1. ＊ More lasting heating, up to 8 hours defrosting without shutdown
  2. ＊ Heat supply while defrosting, indoor temperature fluctuation as low as 3 ℃
  3. ＊ Low temperature power heating, low temperature heating capacity increased by 20%

Note: The above data comes from the test conducted by a third party agency, and refers to the heating effect achieved by Runyao hang up unit and iyao 3 piece cabinet unit under the outdoor severe weather conditions of low temperature and high humidity such as - 5 ℃/RH85%. Data will vary with different test environments and conditions.

Constant temperature three-dimensional air supply technology

Technology of moving large air deflector

Gree pioneered the temperature balanced three-dimensional air supply technology to solve the pain points such as uneven indoor temperature, cold air blowing, and warm hot air. Among them, the hanging type air conditioner is equipped with large sports air deflector technology, large area air deflector design, and better wind control performance. With the large angle air deflector structure, the wind guidance is more accurate, and every corner is the temperature you want
  1. ＊ Shower cooling, cold air does not blow directly, cool but not cold
  2. ＊ Carpet heating, warm feet with hot air, warm but not hot
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central air-conditioning
Research and Application on Key Technologies of Self adaptive High Efficiency Screw Compressor under All Working Conditions
Gree permanent magnet synchronous variable-frequency screw water chiller, which applies the key technology of adaptive high efficiency screw compressor under all working conditions, solves the problem of low energy efficiency of traditional screw water chiller under part load. The comprehensive energy efficiency ratio of the unit can reach IPLV ≥ 11.26W/W under AHRI working condition, which is 40% higher than that of the constant frequency screw machine, the highest in the industry, making commercial large units reach a new height of energy conservation.
Three cylinder two-stage variable volume compressor technology
The three cylinder two-stage variable volume ratio compressor can realize two-stage compression with two different volume ratios, reduce the compression ratio of a single cylinder, reduce the leakage, and improve the volumetric efficiency of the compressor. Compared with the single-stage compression system, the two-stage enthalpy increasing compression system has the advantages of high capacity, high energy efficiency, and high reliability. It is used in household heat pump air conditioners, multi connected heat pump air conditioners Household cold water heat pump units and other types of heat pump products.
High efficiency permanent magnet synchronous frequency conversion centrifugal ice storage double working condition unit
On March 29, 2016, the world's first high-efficiency permanent magnet synchronous frequency conversion centrifugal ice storage double working condition unit realized the frequency conversion speed regulation of megawatt high-speed permanent magnet synchronous motor, improved the energy efficiency of ice storage double working condition unit, and was identified by the expert group as the "international leading" technical level.
Maglev frequency conversion centrifugal refrigeration compressor and chiller
On March 7, 2014, the industry's first magnetic suspension frequency conversion centrifugal water chiller with a single cooling capacity of 1000 cold tons reached 7.19 COP and 12.06 IPLV, which were the highest level in the industry, significantly improving the competitiveness of China's centrifugal water chillers in the international refrigeration market, and was identified as "internationally leading" by authoritative institutions.
PV direct drive frequency conversion centrifuge system
On December 21, 2013, the unit was the first in the world without electricity charges. It has five core technologies, energy-saving central air conditioning, clean energy and intelligent management, and is recognized by the expert group as an "internationally leading" technical level.
High efficiency centrifugal chiller
In October 2009, it broke through several technological bastions in the industry and was identified as "internationally leading" by authoritative institutions. The unit can prepare cold water of 16~18 ℃ to bear the sensible heat load of buildings, meet the requirements of cooling, and achieve "dehumidification with humidity, no dehumidification without humidity", especially suitable for northwest regions with low air humidity and large building spaces with independent temperature and humidity control.
Household appliances
Double stage enthalpy increase of air energy water heater

Triplex

Introduction to two-stage enthalpy increasing of air energy water heater
Double stage enthalpy increase of air energy water heater

Distributed air supply

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Enterprise honor

  • 2022 China's Top 100 Light Industry Technology Enterprises

  • 2022 China Top 500 Brand Value Certificate

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