Cold water heat exchanger with shells connected in series and copper pipe sharing single partition plate

Abstract

The invention discloses a cold water heat exchanger with shells connected in series and a copper pipe sharing a single partition plate. The cold water heat exchanger comprises the shells, a front endcover, a front separation plate, the partition plate, a rear end cover, a rear separation plate and the copper pipe; the shells are cylindrical cast iron shells, and the plurality of sections of shells are connected end to end in series and are sealed; and refrigerant inlets are located at the positions below the center lines of the side walls of the shells by one third, refrigerant outlets are located at the tops of the shells, and the refrigerant inlets and the refrigerant outlets are far away from each other in the axis directions of the shells; bolt holes are formed in the edges of the bottom shell and the tube shell of the front end cover; the two ends of the partition plate are welded to the ends of the two sections of shells respectively; a water cavity is formed between the rear end cover and the rear separation plate; and an annular groove is formed in the rear separation plate. According to the cold water heat exchanger, a refrigerant pipeline is arranged in each independentshell, so that the space occupation is reduced; and water in the copper pipe can be fully utilized for heat exchange, so that the heat exchange efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of central air-conditioning, in particular to a cold water heat exchanger with a shell connected in series with copper pipes sharing a single partition plate. Background technique [0002] Both the evaporator and condenser in the refrigeration system are a specific form of heat exchanger. In the central air-conditioning industry, the evaporator has a variety of forms, including shell-and-tube, plate and other forms. The shell-and-tube type is generally suitable for air-cooled units that prepare cold water. In most regions of the country, different seasonal differences lead to different cooling capacity. For example, during the peak cooling time in summer, full power is required for cooling, but in winter and other seasons when cooling demand is low, full power is not required. At present, there is also frequency conversion technology that can solve the problem of cooling capacity changes within a certain ra...

AI Technical Summary

Problems solved by technology

However, the arrangement of multiple refrigeration systems will lead to the problem of space utilization. Generally, the condenser can be installed outdoors, but as an evaporator, it must be installed indoors, and the space for the evaporator is limited. Multiple refrigeration systems must be considered. The installation space of the evaporator of the system

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