Throttle pipe of household air conditioner

Abstract

The invention relates to a throttle pipe of a household air conditioner, comprising a valve body, a static valve core, movable valve cores; the static valve core is provided with a capillary channel penetrating through the axial centre thereof and at least two axially penetrated overflow channels distributed on the periphery of the capillary channel; the throttle pipe is characterized in that thestatic valve core is only one, the movable valve cores comprise a first movable valve core and a second movable valve core which are positioned at the two sides of the static valve core, wherein, thefirst movable valve core and the second movable valve core are both only provided with a capillary hole penetrating through the axial centre thereof; the throttle pipe also comprises a first blockingpiece and a second blocking piece; the two blocking pieces are respectively arranged at two ends inside the valve body; the first movable valve core is positioned between the first blocking piece andthe static valve core, and the second movable valve core is positioned between the second blocking piece and the static valve core. By utilizing the two movable valve cores, the throttle pipe has twoprocesses of dynamic throttling during the working process, thus leading to good throttling effect; the refrigerant directly flows through a coolant channel of the blocking piece after axially passing through the overflow and the capillary holes, thus simplifying the flow passage route of the movable valve core.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a household air conditioner flow regulating pipe. Background technique [0002] The throttling structure in existing household air conditioners and other small refrigeration equipment generally adopts a throttle valve or a throttle block structure, such as a Chinese utility model patent "throttle valve" with a patent number of ZL97236534.6 (announcement number CN2295085Y). A throttle valve, characterized in that: two opposite valves A and B are fixed in the casing, a: valve A includes a valve body with a gasket fixed at the end, and a through hole is opened in the middle of the valve body, the size of which is There is a valve core in the aperture part, and there is a spray hole in the middle of the valve core, and a filter screen is connected to the end of the valve body opposite to the inlet and outlet; b: Valve B includes a valve body with a gasket fixed o...

AI Technical Summary

Problems solved by technology

The fluid passage on the outer ring of the auxiliary orifice plate (equivalent to the moving block or moving valve core) in the throttling device is the main fluid passage. In order to make the fluid passing through the main fluid passage flow through the fluid through hole on the baffle, it needs A piece is dug out at the back of the placement part to form an upward flow path for the fluid passing through the fluid channel, so the structure of the auxiliary orifice plate is relatively complicated; there is only one auxiliary orifice plate (equivalent to the moving block or moving valve core), Only one throttling can be performed, which is not conducive to satisfying the throttling intensity required to match the cooling and heating of household air conditioners, so the throttling effect of various existing throttling tubes can be further improved

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