Throttle multi-port thermal expansion valve assembly and vehicle

Abstract

The invention provides a throttle multi-port thermal expansion valve assembly and a vehicle. The throttle multi-port thermal expansion valve assembly comprises a valve body (1); the valve body (1) isprovided with a valve inlet (2), a first valve outlet (3), a second valve outlet (4), intermediate pressure cavity (14) and a flow heating power regulating mechanism; an output port of the valve inlet(2) is connected with the intermediate pressure cavity (14) through a capillary throttle pipe (5); a first position of the intermediate pressure cavity (14) is connected with the first valve outlet (3), and a second position of intermediate pressure cavity (14) is connected with the second valve outlet (4), wherein the first position is lower than the second position; and a throttling hole (12) is formed in the first position. According to the throttle multi-port thermal expansion valve assembly, the valve body is improved, the expansion valve is made to have the two-stage throttling action and the function of a gas-liquid separator, the situation that a complicated flash vessel and an expansion valve are omitted in an automobile gas-supplying enthalpy-increasing heat pump air conditioning system is facilitated, the pipeline design is optimized, the cost is reduced, and the economy and practicability are achieved.

Description

Technical field [0001] The present invention relates to an expansion valve for vehicles, in particular, to a throttle multi-port thermal expansion valve assembly. In particular, it is a two-stage throttling five-port thermal expansion valve assembly for vehicles and a vehicle. Background technique [0002] Electric vehicles are getting more and more attention, and they are facing the problem of high power consumption for heating in winter. Heat pump systems have been extensively studied due to high efficiency and energy saving, but heat pump systems also have problems with low temperature startup and insufficient heating performance. One of the solutions is to increase the heating capacity of the heat pump system by supplementing air and increasing enthalpy. Patent document CN106016811B discloses an electric automobile air-conditioning heat pump system with economizer, in which a first four-way reversing valve and a second four-way reversing valve are respectively provided as re...

AI Technical Summary

Problems solved by technology

[0003] However, it requires a complex flash evaporator with an electronic expansion valve or an economizer with an electronic expansion valve. The heat pump system has a complex structure and high cost

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