Valve seat material, valve seat, main valve and four-way reversing valve

Abstract

The invention provides a valve seat material, which comprises the following components in percentage by weight: 55 to 63 percent of Cu, 1 to 5 percent of Pb, 1 to 5 percent of Mn, 0.03 to 0.12 percent of Sn, less than or equal to 5 parts per million of Cd and the balance of Zn and inevitable impurities. Due to the composition of the components, a valve seat has the good machining performance, the machining precision can be ensured, and the requirement of sealing is met. The valve seat material is low in Cd contents, and improves the environmental performance of the material; and in addition, due to the addition of the Mn, the valve seat material reduces the heat conductivity effectively. When the valve seat is used for a four-way reversing valve, high-temperature gas and low-temperature gas flow through the four-way reversing valve simultaneously, and because the valve seat is low in heat conductivity, heat loss between high-temperature and low-temperature coolants can be reduced, and the energy-saving effect of air conditioners is improved effectively.

Description

technical field [0001] The invention relates to a solenoid valve or a reversing valve used in the refrigeration field, in particular to a valve seat material, a valve seat, a main valve and a four-way reversing valve of the solenoid valve or a reversing valve used in an air conditioner or a refrigerator. Background technique [0002] With the rapid development of the economy, the problem of energy shortage has become increasingly prominent, and the development of a green economy that is energy-saving and environmentally friendly is the focus of economic development in various countries. For the air-conditioning and HVAC industry, the development of energy-saving and environment-friendly air conditioners and refrigerators is the key research and development direction of such enterprises. A heat pump air conditioner is a device that absorbs heat from a low-temperature object and transfers energy to a high-temperature object. When cooling, the indoor heat exchanger acts as an ...

AI Technical Summary

Problems solved by technology

In addition, from the working principle of the four-way valve, it can be known that no matter in the heating state or the cooling state, high-temperature and high-pressure gas and low-temperature and low-pressure gas will flow in the main valve at the same time. , there will always be some heat flowing from one end of the valve seat to the other, resulting in heat loss and waste. Therefore, in order to improve energy transfer efficiency and meet the increasingly higher environmental protection requirements in the market, a more environmentally friendly and better valve is required. Seat material for reversing valves with thermal insulation properties

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