Refrigerant charging system and method
A technology of refrigerant and charge, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of refrigerant leakage and low measurement accuracy of refrigerant charge, and achieve the effect of high measurement accuracy
Inactive Publication Date: 2017-01-11
GREE ELECTRIC APPLIANCES INC
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[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0037] An embodiment of the present invention provides a refrigerant charging method for charging refrigerant into the components to be charged, the flow chart of which is as follows figure 2 shown, including:
[0038] S201: Vacuumize the part to be filled;
[0039] In this embodiment, before charging the refrigerant, it is necessary to evacuate the part to be charged to remove the air and water inside and in the pipeline, so as to avoid refrigerant leakage ...
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The invention provides a coolant filling system and a method. The coolant filling system comprises a vacuumizing module, a filling module, a metering module and a control module, wherein the vacuumizing module is used for vacuumizing a component to be filled and judging whether the vacuum degree of the component to be filled reaches a preset vacuum degree, and if yes, a first control instruction is generated and sent to the filling module; the filling module is used for receiving the first control instruction and filling coolants into the component to be filled according to the first control instruction; the metering module comprises a flow sensor and a flow meter, and is used for measuring the actual filling quantity of the coolants entering the component to be filled; the control module is used for judging whether the actual filling quantity is equal to the preset filling quantity, and if yes, a second control instruction is generated and sent to the filling module, so that the filling module stops filling the coolants into the component to be filled. Through the adoption of the coolant filling system, the problem that an ant nest corrodes the component to be filled and a pipeline, as a result, the coolants leak, is solved, and the coolants can be precisely filled according to the preset filling quantity.
Description
technical field [0001] The invention relates to the technical field of air conditioning, and more specifically, to a refrigerant charging system and method. Background technique [0002] During the production process of the air conditioner, it is necessary to fill the evaporator in the air conditioner system with a refrigerant (such as fluorine). The existing refrigerant charging machine includes: a dry filter, an electronic expansion valve, a two-way solenoid valve, an indoor unit, a gas-liquid separator and a pressure sensor. Among them, after the liquid refrigerant enters the drier filter through the connecting pipe, the drier filter dries the refrigerant and filters impurities, and then the refrigerant passes through the electronic expansion valve, two-way solenoid valve, indoor unit, gas-liquid separator and pressure sensor. In the gaseous state, it is converted from high pressure to low pressure and enters the evaporator system. [0003] When using the existing refri...
Claims
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IPC IPC(8): F25B45/00
CPCF25B45/00
Inventor 任燕江余长周耿发旺
Owner GREE ELECTRIC APPLIANCES INC