CN218846456U

CN218846456U - Full premix condensing heat exchanger of high-efficient heat transfer

Info

Publication number: CN218846456U
Application number: CN202320046160.4U
Authority: CN
Inventors: 欧铭彬; ***
Original assignee: Foshan Naimeixin Technology Co ltd
Current assignee: Foshan Naimeixin Technology Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-04-11
Anticipated expiration: 2033-01-09

Abstract

The utility model provides a full premix condensing heat exchanger of high-efficient heat transfer, which comprises a shell, wherein a combustion chamber, a heat transfer chamber and a condensation smoke exhaust chamber which are communicated in sequence are arranged in the shell; the shell is provided with a water inlet, a water outlet and an air inlet pipe; the water inlet and the water outlet are respectively communicated with the heat exchange chamber, and the air inlet pipe is communicated with the combustion chamber; the heat exchange chamber comprises a heat exchange coil and a heat conducting fin, and the heat exchange coil is spirally wound on the outer wall of the heat conducting fin; a plurality of heat conduction channels are longitudinally arranged in the heat conduction sheet, so that heat flow is conducted to the whole heat conduction sheet along the heat conduction channels; the lower part of the heat conducting fin is transversely provided with a plurality of dispersing channels, so that heat flow transmitted on the heat conducting channels can uniformly transversely flow along the dispersing channels; the dispersion channel is internally provided with a plurality of flow deflectors, so that the heat exchange area is increased, the heat flow is dispersed around, the flow speed of the heat flow in the heat conducting sheet is reduced, and the heat conducting sheet can absorb heat more fully.

Description

Full premix condensing heat exchanger of high-efficient heat transfer

Technical Field

The utility model relates to a heating technical field especially relates to a full premix condensing heat exchanger of high-efficient heat transfer.

Background

The full-premixing condensing heat exchanger adopts an integrated design, a main heat exchanger and a condensing heat exchanger are not distinguished any more, the whole heat exchange process is completed by one heat exchanger, the smoke can be condensed and generate condensed water at any position of the heat exchanger, and the condensing wall-mounted boiler works for more than ten hours every day in the heating season, so that the advantage in the heating industry is obvious.

Chinese patent No. CN202023150405.3 uses a new patent, which discloses a fully premixed condensing heat exchanger, including a shell, a coil, a burner, the shell is, from top to bottom: the coil pipe is arranged in the side plate, two ends of the coil pipe are respectively communicated with an outlet on the top cover and the bottom cover, a heat insulation plate is arranged in the middle of the coil pipe, and the edges of the top cover and the bottom cover are connected through a connecting rod; the top cover is provided with a premixing disc surface, external combustible gas enters the burner through an opening in the premixing disc surface, the bottom cover is provided with an air outlet pipe and a water outlet, the coil pipe is clamped with a supporting disc, and the heat insulation plate is connected to the supporting disc; the side plates are circular rings formed by bending rectangular panels; the outlet pipe is movably connected to the bottom of the bottom cover, and the water outlet is formed in the lowest position of the outlet pipe in the vertical direction. The combustible gas is ignited during combustion, and the gas heated by combustion is pushed out of the burner under the push of the subsequent entering gas, and the hot fluid is fully contacted with the coil pipe through the processes of the inner side of the coil pipe, the outer side of the coil pipe, the bottom of the shell and the gas outlet pipe in sequence. The problem that it exists is, after the combustor makes the heat current, directly with the coil pipe heat transfer, lack the device of heat conduction and water conservancy diversion, lead to the heat transfer inhomogeneous easily, heat exchange efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a full-premixing condensing heat exchanger with high-efficiency heat exchange.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a full-premixing condensing heat exchanger capable of efficiently exchanging heat comprises a shell, wherein a combustion chamber, a heat exchange chamber and a condensing smoke exhaust chamber which are sequentially communicated are arranged in the shell; the shell is provided with a water inlet, a water outlet and an air inlet pipe; the water inlet and the water outlet are respectively communicated with the heat exchange chamber; the air inlet pipe is communicated with the combustion chamber; the combustion chamber is connected with a power supply; an insulating tank and an inner tank are arranged below the combustion chamber; the heat exchange chamber comprises a heat exchange coil and heat conducting fins; the heat exchange coil is spirally wound on the outer wall of the heat conducting fin; the heat conducting sheet is internally and longitudinally provided with a plurality of heat conducting channels, the lower part of the heat conducting sheet is transversely provided with a plurality of dispersing channels, and a plurality of flow deflectors are arranged in the dispersing channels.

The guide vane comprises a first blade, a second blade and a connecting rod; one end of the connecting rod is connected with the first blade, the other end of the connecting rod is connected with the second blade, and the flow deflector is arranged in the dispersing channel in an I shape.

The first blade and the second blade are horizontally and transversely arranged.

The inner wall of the upper part of the heat-conducting fin is arc-shaped and gradually draws inward.

The inner wall of the heat conducting fin is tightly attached to and wrapped on the outer walls of the heat insulation tank and the inner tank.

The condensation smoke exhaust chamber is positioned below the heat conducting fins and comprises a condensation water receiving disc, a condensation water outlet and a smoke exhaust pipe; the bottom of the condensation water receiving tray inclines towards one side of the condensation water outlet; one end of the condensation water outlet is communicated with the bottom of the condensation water receiving disc; the other end is communicated with the outside; one end of the smoke exhaust pipe is communicated with the condensation water receiving disc, and the other end of the smoke exhaust pipe is communicated with the outside.

The combustion chamber comprises a heat insulation plate, a combustion barrel and a burner base, and an ignition needle is arranged below the heat insulation plate; the heat insulation plate is located below the air inlet pipe and corresponds to the position of the air inlet pipe, the burner base is located on the air inlet and is in adaptive installation connection with the air inlet pipe, and the burning barrel is in adaptive installation with the burner base.

The utility model discloses following beneficial effect has: 1. the heat conducting fins are arranged to increase the heat exchange area, and the upper parts of the heat conducting fins are gradually narrowed inwards in an arc shape, so that the heat obtained by the combustion chamber is more concentrated.

2. Install the water conservancy diversion piece in the dispersion passageway, increased heat exchange area, make the thermal current toward scattering all around, and then slow down the velocity of flow of thermal current in the heat-conducting strip, make the heat absorption heat that the heat-conducting strip can be more abundant, improve heat exchange efficiency.

3. The heat conduction sheet is internally and longitudinally provided with a heat conduction channel, so that heat flow is conducted to the whole heat conduction sheet along the heat conduction channel. The heat conducting sheet is internally and transversely provided with the dispersing channels, so that heat flow transmitted on the heat conducting channels can uniformly and transversely flow along the dispersing channels, and the heat absorbed by each part of the heat conducting sheet is more uniform.

Drawings

Fig. 1 is a perspective view of the overall structure of the embodiment of the present invention.

Fig. 2 is a front sectional view of the overall structure of the embodiment of the present invention.

Fig. 3 is an overall structure diagram of a guide vane according to an embodiment of the present invention.

Fig. 4 is an exploded view of the combustion chamber according to the embodiment of the present invention.

Fig. 5 is a schematic view of the guide plate of the embodiment of the present invention installed on the heat conducting plate.

Reference numbers in the figures: the device comprises a shell 1, a water inlet 11, a water outlet 12, an air inlet pipe 13, a combustion chamber 2, a heat insulation plate 21, a combustion barrel 22, a combustor base 23, an air inlet 24, an ignition needle 25, a combustion fire hole 26, a heat exchange chamber 3, a heat exchange coil 31, heat conducting fins 32, heat conducting channels 33, dispersing channels 34, a condensation smoke exhaust chamber 4, a condensation water receiving disc 41, a condensation water outlet 42, a smoke exhaust pipe 43, a flow deflector 5, a first blade 51, a second blade 52, a connecting rod 53, a heat insulation tank 6 and an inner tank 7.

Detailed Description

As shown in fig. 1-5, a fully premixed condensing heat exchanger with high heat exchange efficiency is applied to a water heater to provide domestic hot water for users. It includes casing 1, install combustion chamber 2, heat transfer chamber 3 and condensation exhaust fume chamber 4 from last to communicating in proper order down in the casing 1. The top of the shell 1 is provided with a fire observation port. The combustion chamber 2 is connected with a power supply, is positioned at the upper part in the heat exchange chamber 3 and is installed with the shell 1, and the condensation smoke exhaust chamber 4 is positioned below the heat exchange chamber 3 and is installed with the shell 1 and is used for receiving condensed water generated by the heat exchange chamber of the heat exchange chamber 3. The shell 1 is provided with a water inlet 11, a water outlet 12 and an air inlet pipe 13. The air inlet pipe 13 is positioned at the top of the shell 1 and is communicated with the combustion chamber 2, and heat obtained by combustion of the combustion chamber 2 is absorbed by the heat exchange chamber 3. The water inlet 11 is located near the upper part of the shell 1, and the water outlet 12 is located near the lower part of the shell 1. The water inlet 11 and the water outlet 12 are respectively communicated with the heat exchange chamber 3 and exchange heat with the heat exchange chamber 3 to heat cold water into hot water. The heat-insulating tank 6 and the inner tank 7 are arranged below the combustion chamber 2, and the heat-insulating tank 6 and the inner tank 7 are tightly attached to the heat exchange chamber 3 and used for reducing the space of the inner cavity of the heat exchange chamber 3, so that heat generated by the combustion chamber 2 flows along the inner wall of the heat exchange chamber 3 as far as possible and is absorbed by the heat exchange chamber 3, and waste of heat energy is avoided.

As shown in fig. 2, the heat exchange chamber 3 comprises a heat exchange coil 31 and a heat conducting fin 32. The heat exchange coil 31 is spirally wound on the outer wall of the heat conducting fin 32, and one end of the heat exchange coil is connected with the water inlet 11 while the other end is connected with the water outlet 12.

As shown in fig. 2 and 5, in order to conduct heat to the whole heat conducting fin 32 more uniformly, a plurality of heat conducting channels 33 are longitudinally arranged in the heat conducting fin 32, and the heat conducting channels 33 penetrate through the whole heat conducting fin 32 from top to bottom and are arranged at intervals. The heat that produces in the combustion chamber 2, through heat conduction channel 33 is from last to conducting down to whole conducting strip 32 on for the heat can circulate to whole conducting strip 32 on, makes heat exchange coil 31 when the heat transfer, can be continuous absorb the heat, and heat exchange efficiency is higher.

Further, in order to make the heat flow stay on the heat conducting plate 32 for a longer time and facilitate the heat conducting plate 32 to absorb heat, a plurality of dispersing channels 34 are transversely arranged at the lower part of the heat conducting plate 32, and the dispersing channels 34 are longitudinally laminated at the lower part of the heat conducting plate 2 in an annular shape and are communicated with the heat conducting channels 33. When the heat flows downwards from the heat conducting channel 33 and flows onto the dispersing channel 34, part of the heat flows transversely along the dispersing channel 34, so that the heat flows stay on the heat conducting sheet 32 for a longer time, and the heat conducting sheet 32 can absorb heat more fully.

In order to enable heat flow to be more conveniently and transversely dispersed on the dispersion channel 34, increase the heat exchange area and reduce the loss of heat, a plurality of flow deflectors 5 are arranged in the dispersion channel 34, and the flow deflectors 5 are evenly distributed.

Specifically, as shown in fig. 3 and 5, the guide vane 5 includes a first blade 51, a second blade 52, and a connecting rod 53. One end of the connecting rod 53 is connected to the bottom of the first blade 51, the other end is connected to the top of the second blade 52, and the baffle 5 is installed in the dispersing channel 34 in an "i" shape. The first blade 51 and the second blade 52 are horizontally and transversely installed in the dispersion channel 34, and the connecting rod 5 is installed in the heat conduction channel 33. When the heat flow enters the dispersion channel 34 from the heat conduction channel 33, the guide vane 5 is transversely arranged in the dispersion channel 34 and directly receives the heat flow output from the heat conduction channel 33, so that the heat flow is rapidly dispersed to all parts of the dispersion channel 34 along the surfaces of the first blade 51 and the second blade 52.

Further, as shown in fig. 2, in order to make the heat flow generated by the combustion chamber 2 more focused, the inner wall of the upper portion of the heat-conducting fin 32 is gradually inwardly focused in an arc shape. The inner walls of the waist and the lower part of the heat conducting fin 32 are tightly wrapped on the outer walls of the heat insulation tank 6 and the inner tank 7.

As shown in fig. 2, the condensation and smoke-discharging chamber 4 is located below the heat-conducting fin 32 and is communicated with the heat-exchanging chamber 3, and includes a condensation water-receiving tray 41, a condensation water-discharging port 42 and a smoke-discharging pipe 43. Because the gas can produce high temperature and vapor when burning, in the heat exchange process, the vapor condenses into water drops and gathers in the condensation smoke exhaust chamber 4. The bottom of the condensation water receiving tray 41 inclines towards one side of the condensation water outlet 42; one end of the condensation water outlet 42 is communicated with the bottom of the condensation water receiving tray 41; the other end is communicated with the outside; one end of the smoke exhaust pipe 43 is communicated with the condensation water receiving disc 41, and the other end of the smoke exhaust pipe is communicated with the outside.

As shown in fig. 4, the combustion chamber 2 includes a heat insulation plate 21, a combustion tub 22, and a burner base 23, and an ignition needle 25 is provided under the heat insulation plate 21. The outer wall of the combustion barrel 22 is provided with a plurality of combustion fire holes 26. The combustion chamber 2 is fixedly mounted in the housing 1 by screws. The heat insulation plate 21 is located below the air inlet pipe 13 and is provided with an air inlet 24 corresponding to the position of the air inlet pipe 13, the burner seat 23 is located on the air inlet 24, and the combustion barrel 22 is communicated with the air inlet pipe 13 through the air inlet 24. The combustion barrel 22 is fixedly installed with the burner base 23. The gas enters the combustion barrel 22 from the gas inlet pipe 13 through the gas inlet 24, and the gas is uniformly output outwards from the combustion fire holes 26 and is ignited by the ignition needles 25, so that the combustion generates heat energy.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that certain features may be substituted in the embodiments or modified in some cases.

Claims

1. The fully premixed condensing heat exchanger capable of efficiently exchanging heat is characterized by comprising a shell (1), wherein a combustion chamber (2), a heat exchange chamber (3) and a condensing smoke exhaust chamber (4) which are sequentially communicated are arranged in the shell (1); a water inlet (11), a water outlet (12) and an air inlet pipe (13) are arranged on the shell (1); the water inlet (11) and the water outlet (12) are respectively communicated with the heat exchange chamber (3); the air inlet pipe (13) is communicated with the combustion chamber (2); the combustion chamber (2) is connected with a power supply; a heat insulation tank (6) and an inner tank (7) are arranged below the combustion chamber (2); the heat exchange chamber (3) comprises a heat exchange coil (31) and heat conducting fins (32); the heat exchange coil (31) is spirally wound on the outer wall of the heat conducting fin (32); the heat conducting fin is characterized in that a plurality of heat conducting channels (33) are longitudinally arranged in the heat conducting fin (32), a plurality of dispersing channels (34) are transversely arranged at the lower part of the heat conducting fin (32), and a plurality of flow deflectors (5) are arranged in the dispersing channels (34).

2. The heat exchanging efficient fully premixed condensing heat exchanger according to claim 1, characterized in that the guide vane (5) comprises a first vane (51), a second vane (52) and a connecting rod (53); one end of the connecting rod (53) is connected with the first blade (51), the other end of the connecting rod is connected with the second blade (52), and the guide vane (5) is installed in the dispersing channel (34) in an I shape.

3. The heat exchange efficient fully premixed condensing heat exchanger according to claim 2, wherein said first and second vanes (51, 52) are horizontally and laterally disposed.

4. The highly efficient heat exchange fully premixed condensing heat exchanger according to claim 1, wherein the upper inner walls of said heat conducting fins (32) are "curved" and gradually get closer to the inside.

5. The heat exchange efficient fully premixed condensing heat exchanger according to claim 1, wherein the inner wall of said heat conducting fins (32) is wrapped tightly on the outer wall of said insulation tank (6) and said inner tank (7).

6. The heat-exchange efficient fully premixed condensing heat exchanger according to claim 1, wherein the condensing smoke-discharging chamber (4) is located below the heat-conducting fins (32) and comprises a condensing water-receiving tray (41), a condensing water-discharging port (42) and a smoke-discharging pipe (43); the bottom of the condensation water receiving tray (41) inclines towards one side of the condensation water outlet (42); one end of the condensation water outlet (42) is communicated with the bottom of the condensation water pan (41); the other end is communicated with the outside; one end of the smoke exhaust pipe (43) is communicated with the condensation water receiving disc (41), and the other end of the smoke exhaust pipe is communicated with the outside.

7. The heat exchange efficient fully premixed condensing heat exchanger according to claim 1, wherein the combustion chamber (2) comprises a heat insulating plate (21), a combustion tub (22) and a burner base (23), and an ignition needle (25) is provided under the heat insulating plate (21); the heat insulation plate (21) is located below the air inlet pipe (13) and corresponds to the position of the air inlet pipe (13) and is provided with an air inlet (24), the burner base (23) is located on the air inlet (24) and is in adaptive installation connection with the air inlet pipe (13), and the combustion barrel (22) is in adaptive installation with the burner base (23).