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Zhejiang Yinjia Copper Co., Ltd.
was set up in 2004.

Yinjia was established in 2004 with a registered capital of 55.6 million Yuan, located in the southeast of Zhejiang Province, China, 80KM from Hangzhou and 70KM from Ningbo, our factory covers an area of 24,000 square meters and has 240 manufacturing staff. We have also obtained the "Copper Pipe Production License" issued by the General Administration of Quality Supervision and Inspection of China and passed the ISO9001:2008 international quality management system certification.

As China Copper Silencers Manufacturers and Factory, Yinjia specializes in the production of precision purple copper tubes, purple copper pipeline components and steel pipe pipeline components. The main products are: copper pipe assemblies, connecting pipes, bellows, silencers, four-way valve pipe assemblies for air conditioners, suction and discharge pipes applied to compressors, high-efficiency copper pipes for heat exchangers, etc. The products we produce are widely used in the air conditioning, refrigeration and heat exchanger industries and are well evaluated by our customers.

In 2014, Yinjia's sales of copper materials reached 1500 tons, and the output of products reached 80 million pieces, with an output value of 28,000,000 RMB. The company takes the market as the guide and strengthens the internal management, reform and innovation, implements 6S management, lean production, constantly restructuring, and improves the quality of products and services. Supply Copper Silencer Custom

With the tenet of "customer first, quality first", the company is dedicated to providing customers with satisfactory products and considerate services.
  • 24,000

    Plant area

  • 150

    Manufacturing staff

  • 230+


  • 300,000

    Daily output



  • ISO 9001:2015

  • ISO 9001:2015

  • Invention Patent Certification

  • High and New Technology Enterprise Certification

Industry knowledge
How does the use of copper as a material in silencers affect their performance and durability?
Thermal Conductivity: Copper is an excellent thermal conductor. When used in silencers, it can effectively dissipate heat generated by the fluid or gas passing through the system. This property can help manage temperature fluctuations and prevent overheating, contributing to the durability of the Copper silencer.
Corrosion Resistance: Copper exhibits a high level of corrosion resistance, particularly in non-corrosive environments. This resistance makes copper silencers suitable for a wide range of applications, especially in industrial and marine settings where exposure to moisture and chemicals is common.
Acoustic Damping: Copper has good acoustic damping properties, which can help in reducing noise and vibrations within the silencer. The material's ability to absorb and dissipate sound energy contributes to effective noise reduction.
Design Flexibility: Copper is a malleable material that allows for the creation of intricate and customized silencer designs. This flexibility is advantageous when designing silencers to fit specific space or performance requirements.
Longevity: Copper has a long service life due to its resistance to corrosion and degradation. This longevity can reduce the need for frequent replacements, contributing to the cost-effectiveness of copper silencers.
Heat Resistance: Copper has excellent heat resistance properties, making it suitable for Copper silencers in high-temperature applications. It can withstand elevated temperatures without compromising its structural integrity.
Ease of Welding and Joining: Copper is relatively easy to weld and join, simplifying the manufacturing and installation processes. This can reduce production time and costs.
Low Maintenance: Copper silencers typically require minimal maintenance due to their corrosion resistance and durability. Routine inspections and cleaning are usually sufficient to ensure long-term performance.
Versatility: Copper silencers can be used in a wide range of applications, including HVAC systems, industrial machinery, and exhaust systems. Their versatility is a result of copper's adaptability to various conditions.
Environmental Considerations: Copper is a recyclable material, which aligns with sustainability and environmental goals. The ability to recycle copper contributes to reduced waste and resource conservation.
Sound Attenuation: Copper's acoustic properties enable it to effectively attenuate sound, making it a suitable material for silencers in noise-sensitive environments.
Resistance to Erosion: In applications involving abrasive particles in the fluid or gas, copper's resistance to erosion helps maintain the integrity of the silencer over time.
How does a copper silencer separate vapor and liquid refrigerant in the system?
Position in the System: The copper silencer is strategically placed in the refrigeration system's suction line, typically between the evaporator and the compressor. This location allows it to perform its primary function efficiently.
Vapor-Liquid Mixture: In the refrigeration cycle, the refrigerant circulates through the system, alternating between vapor and liquid phases. As the refrigerant absorbs heat in the evaporator, it evaporates into a vapor. Some of this vapor may still contain liquid droplets, creating a vapor-liquid mixture.
Expansion and Reduced Pressure: When the refrigerant passes through the expansion device (such as an expansion valve or capillary tube) just before entering the evaporator, its pressure and temperature drop significantly. This drop in pressure causes some of the vapor to condense back into a liquid state, resulting in a mixture of vapor and liquid entering the evaporator.
Inside the Copper Silencer: Within the copper silencer, the refrigerant encounters a larger volume with lower velocity. This change in flow dynamics allows for the separation of the vapor and liquid phases based on their differing densities.
Gravitational Separation: The copper silencer is oriented vertically, which takes advantage of gravity. The denser liquid refrigerant tends to settle at the bottom of the silencer, while the lighter vapor rises to the top.
Liquid Accumulation: As liquid refrigerant accumulates at the bottom of the silencer, it forms a reservoir of liquid. This process continues as more liquid is separated from the vapor.
Vapor Outlet: Near the top of the silencer, there is an outlet that allows only the vapor phase of the refrigerant to continue toward the compressor. The vapor exiting the silencer is free of most liquid droplets.

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