- EN
In the world of VRF/central air conditioning, the compressor is often called the "heart" of the system.
As the pioneer of VRV systems, Daikin has developed its own unique technology: the high‑pressure shell scroll compressor.
So, what tangible benefits does this technology bring to users? 👇
Daikin's high‑pressure shell design keeps the inside of the compressor under high pressure, fundamentally avoiding inefficient overheating of low‑temperature gas — significantly improving compression efficiency.
📌 Real‑world example: The VRV X7 series equipped with this technology achieves a maximum IPLV value of 9.6, far exceeding the national top‑tier energy efficiency standard.
💡 This means: extremely low power consumption under partial load conditions.
This is one of the most notable advantages of the high‑pressure shell structure.
Strong heating performance in low ambient temperatures
The high‑pressure environment quickly preheats the lubricating oil, ensuring reliable start‑up even in severe cold. Heating operation is possible down to -23°C.
No cooling degradation in high ambient temperatures
The pressure‑differential oil supply eliminates the need for complex oil pumps. An oil film forms on the scroll contact surfaces, reducing mechanical wear while maintaining full cooling capacity at temperatures as high as 43°C.
Smaller footprint
For the same capacity, Daikin's high‑pressure shell compressor is more compact, helping to make better use of building space.
Quieter operation
Built‑in silencing space + pressure‑differential oil film lubrication → effectively reduces mechanical noise and wear.
The following Daikin compressor models have been verified to feature high‑pressure shell design:
| Model Number | Notes |
|---|---|
| JT125GBBY1L | G‑series high‑efficiency compressor, R407C refrigerant, explicitly labeled "high‑pressure shell design" |
| JT335DA‑Y1 | 12 HP, R407C, 400V/50Hz three‑phase, 21.3kW cooling capacity |
From landmark projects like the Hong Kong‑Zhuhai‑Macao Bridge to ordinary homes,
Daikin's high‑pressure shell technology truly delivers:
high efficiency + high reliability + wide operating range
This is the core guarantee of Daikin air conditioners' stable and comfortable performance ✅
