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CN-224215563-U - Condensing heat exchanger

CN224215563UCN 224215563 UCN224215563 UCN 224215563UCN-224215563-U

Abstract

The utility model belongs to the technical field of heat exchange equipment, in particular to a condensing heat exchanger, which comprises a shell with a heat exchange cavity, wherein a smoke outlet and a smoke inlet are respectively formed at the top and the bottom of the shell, a smoke guide baffle plate is arranged in the heat exchange cavity, a heat exchange channel is formed between the smoke guide baffle plate and the heat exchange cavity, the head end and the tail end of the heat exchange channel are respectively communicated with the smoke inlet and the smoke outlet, a plurality of heat absorption pipes are horizontally and transversely arranged in the heat exchange channel, the end parts of the adjacent heat absorption pipes are communicated through a water channel and form a water channel with a serpentine structure, and a water inlet port and a water outlet port which are respectively communicated with the head end and the tail end of the water channel are arranged on the shell. According to the utility model, the smoke flow path of the heat exchange channel is longer in the heat exchange cavity by virtue of the smoke guide baffle plate, and the heat exchange channel is in a serpentine structure along the horizontal and longitudinal directions, so that smoke can flow up and down along the heat exchange channel, the flow rate of the smoke is effectively reduced, and the smoke and the heat absorption pipe can be subjected to sufficient heat exchange matching.

Inventors

  • WU JI
  • JIANG LINGLING

Assignees

  • 台州职业技术学院

Dates

Publication Date
20260508
Application Date
20250116

Claims (6)

  1. 1. A condensing heat exchanger is characterized by comprising a shell (1) with a heat exchange cavity, wherein a smoke outlet (2) and a smoke inlet (3) which are communicated with the heat exchange cavity are respectively formed at the top and the bottom of the shell (1), a smoke guide baffle is arranged in the heat exchange cavity, a heat exchange channel which is distributed along the horizontal longitudinal direction and takes a serpentine structure is formed between the smoke guide baffle and the heat exchange cavity, the head end and the tail end of the heat exchange channel are respectively communicated with the smoke inlet (3) and the smoke outlet (2), a plurality of heat absorption pipes (4) are horizontally and transversely arranged in the heat exchange channel, the end parts of the adjacent heat absorption pipes (4) are communicated through water channels and form water channels with serpentine structures, and a water inlet port (5) and a water outlet port (6) which are respectively communicated with the head end and the tail end of the water channels are arranged on the shell (1); The smoke guide baffle comprises a smoke guide plate body (7) of which the heat exchange cavity is divided up and down, an upper separation plate body (8) of which the upper end is tightly fixed on the smoke guide plate body (7) and a lower separation plate body (9) of which the lower end is tightly fixed on the inner bottom surface of the heat exchange cavity, wherein the smoke inlet (3) is positioned below the front end of the smoke guide plate body (7), the rear end of the smoke guide plate body (7) is provided with a smoke through hole for smoke to flow from the smoke inlet (3) to the smoke outlet (2), the lower separation plate body (9) is positioned between the smoke inlet (3) and the upper separation plate body (8), and a smoke gap for smoke to pass through is reserved between the lower end of the upper separation plate body (8) and the inner bottom surface of the heat exchange cavity and between the upper end of the lower separation plate body (9) and the smoke guide plate body (7).
  2. 2. A condensing heat exchanger according to claim 1 characterized in that said smoke-guiding plate (7) is disposed obliquely downward in the horizontal direction, and the front end of said smoke-guiding plate (7) is higher than the rear end of said smoke-guiding plate (7).
  3. 3. A condensing heat exchanger according to claim 1, characterized in that said upper partition plate body (8) is disposed obliquely rearward in the vertical direction, and the upper end of the upper partition plate body (8) is forward of the lower end of the upper partition plate body (8).
  4. 4. A condensing heat exchanger according to claim 1, characterized in that the smoke vent comprises a smoke vent hole (10) arranged transversely and a plurality of smoke vent holes (11) distributed at intervals transversely, the smoke vent hole (10) is positioned at one side of the smoke outlet (2), and the smoke vent hole (11) is positioned at one side of the smoke vent hole (10) close to the smoke outlet (2).
  5. 5. The condensing heat exchanger of claim 1, wherein the heat absorbing pipes (4) are corrugated pipes and are distributed in the heat exchanging channel in a arrayed manner, the end parts of two adjacent heat absorbing pipes (4) in the same row are communicated through a bent pipe (12), the inner hole of the bent pipe (12) is the water passing channel, and the heat absorbing pipes (4) in two adjacent rows are distributed in a staggered manner.
  6. 6. A condensing heat exchanger according to claim 1 characterized in that the inner bottom surface of said heat exchange chamber has an inclined surface structure with a bottommost point, and a drain joint (13) communicating with the outside is provided at the bottommost point.

Description

Condensing heat exchanger Technical field: The utility model belongs to the technical field of heat exchange equipment, in particular to a condensing heat exchanger. The background technology is as follows: The gas wall-hanging stove is generally provided with a combustion chamber, a heat exchanger and other devices, the combustion chamber burns gas to generate a large amount of heat, the heat is transferred to cold water flowing through the heat exchanger from a water inlet pipe by the heat exchanger, so that the water temperature of the cold water is increased to form hot water discharged from a water outlet pipe, high-temperature flue gas generated by combustion also passes through a flue gas secondary condensation heat exchanger, and the heat in the flue gas is recovered by the secondary condensation heat exchanger to preheat water flow, so that the heat exchange rate of the gas wall-hanging stove is effectively improved. Most of the prior secondary condensation heat exchangers are directly provided with heat absorption pipes in the flue gas discharge channels, and heat in the flue gas cannot be effectively absorbed by the heat absorption pipes due to the short flue gas channels and the fast flue gas flow rate. The invention comprises the following steps: The utility model aims to provide a condensing heat exchanger, which forms a heat exchange channel with a longer smoke flow path in a heat exchange cavity by virtue of a smoke guide baffle plate, and the heat exchange channel is in a serpentine structure along the horizontal and longitudinal directions, so that smoke can flow up and down along the heat exchange channel, the flow rate of the smoke is effectively reduced, and the smoke and a heat absorption pipe can be subjected to sufficient heat exchange matching. The utility model is realized in the following way: the utility model provides a condensing heat exchanger, includes the casing that has heat exchange cavity, flue gas outlet and the flue gas import with heat exchange cavity intercommunication have been seted up respectively to the top and the bottom of casing, be provided with the smoke guide baffle in the heat exchange cavity, and form the heat transfer passageway that follows horizontal longitudinal distribution and be serpentine structure between smoke guide baffle and the heat exchange cavity, heat transfer passageway's first end both ends respectively with flue gas import, flue gas outlet intercommunication, transversely be provided with a plurality of heat absorption pipe along the level in the heat transfer passageway, the tip of adjacent heat absorption pipe is through water channel intercommunication, and form serpentine structure's rivers passageway, be provided with on the casing respectively with rivers passageway first, tail both ends intercommunication inlet port and outlet port. In the condensation heat exchanger, the smoke guide baffle comprises a smoke guide plate body for separating the heat exchange chamber from top to bottom, an upper baffle plate body with the upper end being tightly fixed on the smoke guide plate body, and a lower baffle plate body with the lower end being tightly fixed on the inner bottom surface of the heat exchange chamber, wherein the smoke inlet is positioned below the front end of the smoke guide plate body, the rear end of the smoke guide plate body is provided with a smoke through hole for allowing smoke to flow from the smoke inlet to the smoke outlet, the lower baffle plate body is positioned between the smoke inlet and the upper baffle plate body, and smoke gaps for allowing smoke to pass are reserved between the lower end of the upper baffle plate body and the inner bottom surface of the heat exchange chamber and between the upper end of the lower baffle plate body and the smoke guide plate body. In the above condensation heat exchanger, the smoke guide plate body is disposed obliquely downward along a horizontal direction, and the front end of the smoke guide plate body is higher than the rear end of the smoke guide plate body. In the above-mentioned condensation heat exchanger, the upper partition plate body is disposed obliquely rearward in a vertical direction, and an upper end of the upper partition plate body is forward of a lower end of the upper partition plate body. In the above condensation heat exchanger, the smoke vent comprises a smoke vent hole and a plurality of smoke vent holes, wherein the smoke vent holes are arranged along the transverse direction, the smoke vent holes are distributed along the transverse direction at intervals, the smoke vent hole is positioned at one side of the smoke outlet, and the smoke vent hole is positioned at one side of the smoke vent hole close to the smoke outlet. In the above condensing heat exchanger, the heat absorbing pipes are corrugated pipes and are distributed in the heat exchanging channel in a arrayed manner, the end parts of two adjacent heat absorbing pipes in the same row are commu