Apparatus and method for recovering refrigerant through a double conduit connection

摘要

An apparatus for transferring a fluid from and/or to a system, e.g., an air conditioning system, includes a main compartment having at least one pumping device for pumping the fluid from/to the system, an interface module having at least one gauge which is configured for displaying the pressure of the fluid, and a fluid connection fluidly connecting the gauge to the main compartment. The fluid connection is formed in a double conduit design in order to prevent any leakage of the fluid from the fluid connection.

主权项

1. An apparatus for transferring a fluid at least one of from and to an air conditioning system, the apparatus comprising:
a main compartment having at least one pumping device pumping the fluid at least one of from and to the air conditioning system; an interface module having at least one gauge which is configured to display the pressure of the fluid; a fluid connection fluidly connecting the gauge to the main compartment, wherein the fluid connection is formed in a double conduit configuration to prevent leakage of the fluid from the fluid connection, the double conduit configuration including an inner and an outer conduit, wherein the outer conduit is configured to receive any fluid leaking out of the inner conduit, and wherein the inner and outer conduits are substantially concentric to one another, the outer conduit being in communication with the main compartment; at least one fitting connecting the inner and outer conduits to the gauge, the at least one fitting including at least one sensor configured to allow operation of the apparatus only after the at least one fitting is properly connected; a leakage pumping device to which the outer conduit is fluidly connected, the leakage pumping device being configured to pump a leaking fluid stream from the outer conduit into the main compartment when the inner conduit leaks the leaking fluid stream; and a sensor configured to sense the leaking fluid stream in the outer conduit in order to activate the leakage pumping device; wherein the at least one fitting is permanently attached to a body of the gauge, wherein the outer conduit is fluidly connected to the leakage pumping device, which is configured for pumping the leaking fluid stream into the main compartment.