Scenario 1: Refrigerator/Freezer Manufacturing

The sealing of copper tubing for refrigerator compressors is a traditional area of strength for ultrasonic technology. The equipment can complete both the sealing and cutting of refrigeration piping in a single operation, addressing issues such as high labour intensity and poor working conditions associated with flame brazing, whilst ensuring the airtightness of the refrigerant piping.

Scenario 2: Air Conditioning/HVAC Systems

The joining of copper tubes in air conditioning evaporators and condensers has traditionally relied on flame brazing. With R32 and R290 gradually becoming the mainstream refrigerants, flame-free ultrasonic sealing has become an essential requirement for the upgrading of air conditioning production lines, and a large number of manufacturers are already applying it on a mass scale in their production lines.

Scenario 3: Wine Coolers/Portable Air Conditioners

The wine cooler industry is undergoing a complete transition from R134a to R600a. Due to the flammable nature of R600a, flame brazing has been outright banned, making ultrasonic sealing the only safe and compliant sealing solution currently available.

Scenario 4: Sensors/Capillary Tube Sealing

The sealing of copper tubing for capillary or bulb-type temperature sensors demands extremely high levels of precision and sealing integrity; ultrasonic sealing is the ideal solution.

Industry Consensus

Search results indicate that ultrasonic copper tube sealing technology has been in use for over 10 years in sectors such as air conditioning, HVAC systems, refrigerators, portable air conditioners and wine coolers, and is a mature process that has been thoroughly validated by the market over the long term.