Thermal induction partial pressure type energy-saving regulating valve of heat pump unit

Abstract

The invention discloses a thermal induction partial pressure type energy-saving regulating valve of a heat pump unit. The thermal induction partial pressure type energy-saving regulating valve comprises a valve body, wherein a valve rod is rotatably installed on the inner wall of the valve body, a flow choking piece is installed on the valve rod, a pressure sensing cavity and a pressure regulatingcavity are formed in the side wall of the valve body, and the pressure sensing cavity and the pressure regulating cavity are symmetrically arranged; and the end, close to the pressure sensing cavity,of the valve rod extends into the pressure sensing cavity and is provided with a pressure piece, a pressure limiting plate is installed in the pressure sensing cavity, and the end, close to the pressure regulating cavity, of the valve rod extends into the pressure regulating cavity and is provided with a right-angle pressure regulating rod. A temperature sensing bulb is arranged in the valve body, interference is reduced, the precision is improved, meanwhile, the response speed is increased, the resistance value between binding posts is regulated through sliding of the right-angle pressure regulating rod and an elastic clamping piece on an arc-shaped blocking ring, the function of regulating the voltage after wiring installation is achieved, and the energy consumption of the heat pump unit is reduced.

Description

technical field [0001] The invention relates to the field of heat pump equipment, in particular to a thermal induction partial pressure energy-saving regulating valve of a heat pump unit. Background technique [0002] A heat pump unit is usually composed of an evaporator, a condenser, a liquid storage tank, a compressor, and an expansion valve. The expansion valve plays a role in regulating the flow of refrigerant in the heat pump unit to prevent insufficient utilization of the evaporator area and knocking. [0003] Existing expansion regulating valves usually use a temperature sensing package and a capillary tube to sense temperature and transmit the temperature sensing value. The capillary tube is separated from the valve body so that the capillary tube is easily affected by the external temperature, resulting in low adjustment accuracy, and after expansion adjustment, it can only make the refrigerant The flow rate varies and the fan speed on the evaporator side requires a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that the capillary is located on the outside and is easily affected by interference, and the fan speed needs to be controlled by an additional controller after flow adjustment, which increases energy consumption. Induction partial pressure energy saving regulating valve

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