The working principle of multi-line branch pipe

                                                             The working principle of multi-line branch pipe

The operation effect of the multi-air conditioner is not only determined by the equipment, but also closely related to installation factors such as the installation of refrigerant pipes and the perfusion of refrigerants. This method focuses on solving the following key issues during construction:

1. The choice of refrigerant pipes should be dephosphorized seamless copper pipes. Coiled pipes should be used for copper pipes with specifications below Φ19.05, and copper pipe joints should be reduced, and straight pipes should be used for specifications larger than Φ19.05;

2. The construction of the refrigerant pipe must ensure that the pipe is dry, and try to avoid construction in rainy days;

3. The refrigerant pipe must be filled with nitrogen protection during the welding process, and a reasonable pressure value has been summed up according to the actual construction experience, so as to avoid excessive nitrogen flow, which may easily cause blisters at the welding point. If the flow is too small, excessive nitrogen oxide film will be produced Disadvantages that must flow through the weld. And put forward a feasible nitrogen filling method.

4. The welding methods corresponding to the various installation methods of the specified refrigerant pipes are mainly to prevent scalding or blisters from leaking.

5. Propose the selection and installation of branch pipes to avoid the phenomenon of uneven heating and cooling between multiple units and multiple units.

6. Standardize the process and standard of system purging, air tightness test, drying and refrigerant flushing after installation.

Process principle:

Using solder with a lower melting point than copper, after melting, the joint gap is filled by capillary action, and the connection with the base metal is achieved by mutual diffusion, and the atomic bonding is achieved by the mutual diffusion of liquid solder and solid metal. At the same time, the two materials cooperate with each other. By reasonably setting the form and position of the support and hanger, the branch pipe is controlled to be in a horizontal or vertical state to ensure a balanced distribution of flow.