Refrigerant natural circulation combined type bypass throttle valve for special machine of machine room

Abstract

The invention relates to a refrigerant natural circulation combined type bypass throttle valve for a special machine of a machine room. The bypass throttle valve comprises a valve body, a condenser connecting pipe, an evaporator connecting pipe, an exhaust capillary and a throttling device, wherein a valve core and a valve seat are arranged in the valve body, the valve core can axially move in the valve body and can be used for dividing the inner cavity of the valve body inner cavity into a high-pressure cavity and a low-pressure cavity, and a spring is arranged in the low-pressure cavity; the exhaust capillary is arranged on the side of the high-pressure cavity, and the throttling device is arranged between the condenser connecting pipe and the evaporator connecting pipe; and the valve core in the bypass throttle valve is ensured to move in the valve body by virtue of the spring force and the suction-exhaust pressure difference when the compressor is started, thereby realizing the bypass or throttling of the refrigerant condenser connecting pipe to the evaporator connecting pipe. The refrigerant natural circulation combined type bypass throttle valve provided by the invention hasthe advantages of realizing the free transition of a heat pipe model and a refrigeration model without any external force only according to the starting state of the compressor, thereby fully expressing the energy-saving advantage of the refrigerant natural circulation combined type special machine of the machine room, and improving the operation reliability.

Description

technical field [0001] The invention relates to a bypass throttle valve for a special machine room with natural circulation of refrigerant, which belongs to the automatic control valve of fluid machinery, and is especially suitable for the special machine of machine room with natural circulation of refrigerant. The bypass or throttling can realize the free conversion between heat pipe mode and cooling mode. Background technique [0002] The machine room special machine with natural circulation of refrigerant has cooling mode and heat pipe mode. At present, self-operated three-way valves are usually installed at the outlet of the evaporator, the outlet of the compressor, and the inlet of the condenser to realize the cooling mode and heat pipe of the special machine room with natural circulation of refrigerant. For mode switching, a parallel throttling mechanism and solenoid valve are used between the evaporator inlet and the condenser outlet to realize the switching between t...

AI Technical Summary

Problems solved by technology

However, the service life of the solenoid valve is limited. When a certain number of times of opening and closing is exceeded, the solenoid valve will fail, resulting in the failure of the special machine in the computer room; the solenoid valve needs electricity as power, and it is always charged when it is opened, consuming electric energy in vain

To sum up, when the solenoid valve is used in the special machine room with natural circulation of refrigerant, it will reduce the energy saving effect and reliability of the unit to a certain extent.

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