All-region heat-pump horizontal shell-and-tube heat exchanger

Abstract

The invention relates to a heat exchanger, and particularly discloses an all-region heat-pump horizontal shell-and-tube heat exchanger. The heat exchanger comprises an anti-corrosion zinc spelter, endshields, composite tube plates, a fusible plug, a barrel, a plurality of heat exchange tubes, a refrigerant inlet, a refrigerant outlet, a cooling water inlet, a cooling water outlet and a pair of bottom studs, and is characterized in that the composite tube plate I is arranged at the left end outside the barrel, and connected with the endshield I; the composite tube plate II is arranged at the right end outside the barrel, and connected with the endshield II; the fusible plug is arranged above the left end of the barrel; the refrigerant outlet is formed below the left end of the barrel; the refrigerant inlet is formed above the right end of the barrel; the bottom studs are arranged at the lower end of the barrel; the heat exchange tubes are arranged in the barrel; the anti-corrosion zinc spelter is arranged on the endshield I; and the cooling water inlet and the cooling water outlet are formed in the endshield II. The heat exchanger has the benefits that a space of the barrel is fully used; the heat exchange efficiency of the outer sides of the tubes is improved; an oil carrying rate of a refrigerant is adequately ensured; and the heat exchanger has good corrosion resistance.

Description

technical field [0001] The invention relates to a heat exchanger, more precisely, an all-area heat pump type horizontal shell-and-tube heat exchanger. Background technique [0002] The horizontal shell and tube heat exchanger has unique structural features: relatively simple processing technology, easy cleaning of heat exchange tubes, mature anti-corrosion heat exchange tubes, and liquid storage characteristics, etc., so it is widely used in various refrigeration systems. However, due to its structure, it cannot solve the problem of oil return when used as a heat pump system, so it can only be used as a condenser in a single-cooling refrigeration system at present; the heat pump refrigeration system needs to use a dry evaporator (condenser), and its structure Similar to the structure of the horizontal shell-and-tube evaporator, the difference is that in the dry evaporator (condenser), the refrigerant flows in the heat exchange tube, while the cooling medium flows outside the...

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Problems solved by technology

[0002] The horizontal shell and tube heat exchanger has unique structural features: relatively simple processing technology, easy cleaning of heat exchange tubes, mature anti-corrosion heat exchange tubes, and liquid storage characteristics, etc., so it is widely used in various refrigeration systems. However, due to its structure, it cannot solve the problem of oil return when used as a heat pump system, so it can only be used as a condenser in a single-cooling refrigeration system at present; the heat pump refrigeration system needs to use a dry evaporator (condenser), and its structure Similar to the structure of the horizontal shell-and-tube evaporator, the difference is that in the dry evaporator (condenser) the refrigerant flows in the heat exchange tube, while the cooling medium flows outside the heat exchange tube

It has the advantages of small refrigerant charge, avoiding the phenomenon of heat exchange tubes bursting due to freezing, and solving the problem of oil return. It is widely used in various heat pump refrigeration systems. The disadvantages are: the processing technology is relatively complicated, It is difficult to clean the outside of the heat exchange tube, and it is difficult to deal with the corrosion of the cooling medium inside the shell and the outside of the heat exchange tube, so its wide applicability in all regions is also restricted.

At present, there is no all-regional heat pump type horizontal shell-and-tube heat exchanger at home and abroad.

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