Heat exchange unit of heat supply system

Abstract

The invention relates to a heat exchange unit of a heat supply system. The heat exchange unit of the heat supply system comprises a heat exchange unit, a combustor and a front exchange unit, wherein an inverted U-shaped heat exchange boiler body is used as a main body of the heat exchange unit; the heat exchange unit is externally provided with a discharge port and a reflux port; the lower end of the heat exchange unit is provided with a bridging port; a semi-open internal chamber is arranged by recessing upwards from the bridging port; the upper end of the internal chamber runs through upwards through a heat flow pipe for exhaust; the heat generated by the combustor acts on the internal chamber; the front exchange unit is arranged in a space of the internal chamber; one end of the front exchange unit is a lead-in end which is joined to the reflux port, and the other end of the front exchange unit is a discharge end; and the lower space of an internal volume space of the inverted U-shaped heat exchange boiler body runs through. The heat exchange unit is provided with a front preheating means, so that the outlet temperature is stable, the working form of the heat is changed, the heat source is fully utilized in heat exchange work, and exhaust pollution is reduced.

Description

technical field [0001] The invention relates to a heat exchange unit of a heat supply system, especially a system that uses a fluid heat medium as a medium to supply heat to a remote location. Background technique [0002] Heat supply equipment is common in heating systems, such as heating or high-temperature heating systems. In order to centralize energy management and configure safety issues, these equipment adopt a central system with heat exchange units, and heat exchange units are connected via loops. The heat and mass exchange that occurs is sent to the medium and then brought to the remote end for use. The heat exchange group is the core responsible for supplying temperature. It converts chemical energy into heat energy and transfers it to the heat medium so that the working end can release Hot and warm. [0003] Common related systems such as figure 1 As shown, the heat supply system 1 is mainly composed of a heat exchange unit 11, which transfers the heat absorbed...

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Problems solved by technology

[0005] This kind of design has a long history of enlarging the contact area of ​​heat exchange with the heat flow pipe 111 and the way of flowing the exhaust gas in a forward direction. The bottom of 110 is heated by the highest heat temperature of the burner 12. After the heat medium 10 at the bottom of the heat accumulation chamber 110 is heated, it will exchange heat with the heat medium 10 on the upper part of the heat accumulation chamber 110. Since the heat medium 10 is a fluid, If the flame of the burner 12 is unstable or the flow line of the heat medium 10 is turbulent, the output temperature will be unstable, and most of the heat generated by the burner 12 will go up quickly from the heat flow. The pipe 111 directly conveys the heating loss of the system caused by the discharge of the exhaust pipe 112, so there is still high temperature at the discharge end of the exhaust pipe 112, which loses the use efficiency, and the waste discharged at the outlet of the exhaust pipe 112 will also be caused by Incomplete combustion will pollute the atmosphere, and the working vector of the burner 12 is simply upward, so the bottom of the heat accumulation chamber 110 faces the high temperature receiving burner 12, and the upper part of the furnace body loses temperature obviously, resulting in Inefficient use of energy and unstable system supply temperature

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