WO2022021915A1 - 一种壁挂炉主换热器 - Google Patents

一种壁挂炉主换热器 Download PDF

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Publication number
WO2022021915A1
WO2022021915A1 PCT/CN2021/083940 CN2021083940W WO2022021915A1 WO 2022021915 A1 WO2022021915 A1 WO 2022021915A1 CN 2021083940 W CN2021083940 W CN 2021083940W WO 2022021915 A1 WO2022021915 A1 WO 2022021915A1
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WO
WIPO (PCT)
Prior art keywords
medium
plate
heat exchanger
channel
medium channel
Prior art date
Application number
PCT/CN2021/083940
Other languages
English (en)
French (fr)
Inventor
张小彬
Original Assignee
浙江锦欣节能科技有限公司
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Filing date
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Publication of WO2022021915A1 publication Critical patent/WO2022021915A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage

Definitions

  • the invention relates to the technical field of heat exchangers, in particular to a main heat exchanger of a wall-hung boiler.
  • the main heat exchanger of the wall-hung boiler adopts the copper tube fin type and the stainless steel tube fin type; the copper tube is easily rusted when it encounters the condensed water condensed by the high-temperature flue gas and its corresponding acid, and the appearance will not only become a long time. There are a series of defects such as ugly rust and easy modification and damage.
  • the tube is not easy to corrode in high temperature flue gas, and it is easy to produce high temperature deformation, and the water flow through the tube is basically in a tubular state, and the heat exchange efficiency is not high;
  • the heat exchanger is not only resistant to corrosion and deformation, but also greatly improves the heat exchange performance of the main heat exchanger.
  • the enhanced performance of the heat exchanger means that less gas is used to generate hot water of the same temperature, which greatly saves gas resources and plays a good role in promoting national energy conservation and emission reduction.
  • the present invention provides a main heat exchanger for a wall-hung boiler that can improve the heat exchange performance of the main heat exchanger, and is resistant to corrosion and deformation.
  • a main heat exchanger of a wall-hung boiler comprising:
  • the heat exchanger core includes at least two plates A, at least two plates B, an end plate arranged at the front end and a bottom plate arranged at the rear end, and each two plates A are combined with every two plates B combined installation, a first medium channel communicating with the outside is formed between each two adjacent plates A, a second medium channel 1 is formed between the plate A and the adjacent plate B, and the first medium channel is formed between the plate A and the adjacent plate B.
  • a medium channel is spaced apart from the second medium channel, the plate A, the plate B and the end plate are respectively provided with a corresponding second medium inlet and a second medium outlet, and the second medium channel passes through The second medium inlet and the second medium outlet are connected;
  • the shell assembly is installed on the outside of the heat exchanger core, and the inner hollow is formed with a lower chamber for installing the heat exchanger core and an upper chamber for the first medium to circulate, the upper chamber has a first medium inlet and is connected with the first medium.
  • the first medium channel communicates.
  • the casing assembly includes an outer casing and an inner casing, a second medium channel 2 is arranged between the outer casing and the inner casing, and the second medium channel 2 and the second medium channel 1 are arranged between the outer casing and the inner casing.
  • the second medium channel 2 is configured so that the second medium flowing out of the second medium channel can evenly move around the heat exchanger.
  • the outer casing includes a front cover plate arranged at the front end of the heat exchanger, a left cover plate and a right cover plate arranged on the left and right sides of the heat exchanger, and a rear cover plate arranged at the rear side of the heat exchanger.
  • a side cover plate, the front side of the inner casing is provided with a through hole that is adapted to the second medium outlet, and the front side cover plate, the left cover plate and the right cover are provided with a second medium channel divided into two parts
  • the blocking member of the upper channel and the lower channel, and the blocking member of the front side cover plate is arranged above the through hole, so that the second medium channel and the lower channel are communicated with the second medium channel two.
  • the front surface of the plate A is provided with a number of first protruding parts, and a first gap for the first medium to circulate between each adjacent first protruding part is provided.
  • a protruding portion is connected to a plurality of first protruding portions of adjacent plates A, a plurality of second protruding portions are provided on the plate B, and a plurality of second protruding portions are provided between the adjacent second protruding portions.
  • the second protruding part of the plate B is connected to the groove on the back of the protruding part of the adjacent plate A.
  • the left cover plate and the right cover plate of the outer casing are provided with flow guides that make the second medium flow in an S-shape or a Z-shape.
  • the plate B is provided with a lateral guide groove.
  • the front side cover plate, the left side cover plate, the right side cover plate and the rear side cover plate are provided with mounting parts, so that the second medium can flow around the casing.
  • the upper part of the front side casing is provided with a second medium outlet.
  • the present invention has the following advantages:
  • the second medium that is, cold water, flows from the second medium pipe inlet to the second medium inlet of the end plate to the bottom of the first second medium channel, and then flows upward from the upper second medium outlet to the next adjacent one.
  • the upper part of the second medium channel and then flows downward from the second medium outlet of the lower part to the lower part of the next adjacent second medium channel, and so on, and finally returns to flow out from the second medium outlet of the end plate;
  • the first medium is the exhausted high-temperature flue gas entering the heat exchanger from the inlet of the shell assembly, passing through the upper chamber to the upper part of the first medium channel and entering the heat exchanger core, and the high-temperature flue gas of the first medium is in the narrow first medium channel.
  • the cooled flue gas Collected through the smoke pipe at a temperature slightly higher than the atmosphere and then discharged into the atmosphere;
  • the flow state of the second medium during the heat exchange process of the first medium is not tubular, the heat exchange efficiency is higher, and the pressure bearing strength of the heat exchanger core is greatly improved, and it is not easy to be blocked; at the same time, the high-temperature flue gas is the first medium.
  • the heat exchanger When entering the heat exchanger, it needs to pass a certain distance before entering the first medium channel of the heat exchanger core to exchange heat with the second medium.
  • the high-temperature flue gas has not been completely formed at the beginning.
  • the heat exchange can improve the utilization rate of energy, improve the heat exchange efficiency, and reduce the waste of energy; the setting of the first medium channel is narrow, which can improve the heat exchange efficiency.
  • the second inlet is the through hole provided on the front side of the inner shell, and enters the second lower channel of the second medium channel.
  • the shell assembly Under the action of the shell assembly, it flows evenly to the second lower channel of the second medium channel formed on the left and right sides of the shell assembly (at this time, the overall flow direction of the second medium in the second lower channel of the second medium channel is from front to back) , reach the bottom of the second lower channel of the second medium channel formed on the rear side of the shell component, and then flow from bottom to top to the second upper channel of the second medium channel formed on the rear side of the shell component (at this time, the second medium is in the second medium channel.
  • the overall flow direction of the second is from the bottom of the lower channel to the upper channel), and then under the action of the shell assembly, it flows forward evenly toward the upper channels on the left and right sides of the shell assembly, and flows to the upper channel on the front side of the shell assembly, Finally, it flows out from the second medium outlet on the upper part of the front cover.
  • the second medium can flow evenly around the shell assembly, so that the first medium can fully exchange heat with the second medium, improve the utilization rate of energy, reduce the waste of resources, and at the same time can prevent the first medium, that is, high temperature flue gas When entering the heat exchanger, the temperature is too high, causing damage to various parts of the heat exchanger, improving the service life of the heat exchanger and preventing corrosion; at the same time, the left cover, right cover and front cover of the shell assembly Both are equipped with a blocking member, which divides the second medium channel into an upper channel and an upper channel, which plays the role of guiding the flow direction of the second medium; the second medium channel is divided into an upper channel and a lower channel, so that the second medium first flows along the lower channel and then Then flow to the upper channel to increase the flow of the second medium in the second medium channel 2 and improve the heat exchange efficiency.
  • a blocking member which divides the second medium channel into an upper channel and an upper channel, which plays the role of guiding the flow direction of the second medium
  • the second medium channel is
  • Figure 1 is a schematic diagram of the overall structure of the present invention.
  • Fig. 2 is the front view of the present invention
  • FIG. 3 is a schematic structural diagram 2 of the present invention.
  • Fig. 4 is the structure sectional view of the present invention.
  • FIG. 5 is a schematic diagram of the structure of the heat exchanger core of the present invention.
  • FIG. 6 is a schematic diagram 2 of the structure of the heat exchanger core of the present invention.
  • Fig. 7 is the structural representation at the place of Fig. 6 M;
  • Fig. 10 is the structural schematic diagram 1 of the plate B of the present invention.
  • Figure 11 is a side view of the plate B of the present invention.
  • Fig. 12 is the structural schematic diagram 2 of the plate B of the present invention.
  • Fig. 13 is the structural schematic diagram 1 of the plate A of the present invention.
  • Figure 14 is a side view of the plate A of the present invention.
  • Fig. 15 is the structural schematic diagram 2 of the plate A of the present invention.
  • 16 is a schematic structural diagram of the left cover plate and the right cover plate of the present invention.
  • 17 is a side view of the left cover plate and the right cover plate of the present invention.
  • FIG. 18 is a schematic structural diagram 2 of the left cover plate and the right cover plate of the present invention.
  • Figure 19 is a schematic structural diagram of the front cover plate of the present invention.
  • Figure 20 is a side view of the front cover plate of the present invention.
  • Fig. 21 is a schematic diagram 2 of the structure of the front cover plate of the present invention.
  • Figure 22 is a front view of the housing assembly of the present invention.
  • Figure 23 is a top view of the housing assembly of the present invention.
  • Figure 24 is an exploded view of the housing assembly of the present invention.
  • Figure 25 is a side view of the housing assembly of the present invention.
  • Figure 26 is a schematic diagram of the rear side cover plate of the housing assembly of the present invention.
  • Figure 27 is a side view of the rear side cover of the housing assembly of the present invention.
  • a main heat exchanger for a wall-hung boiler includes:
  • the heat exchanger core includes at least two plates A1, at least two plates B2, an end plate 3 arranged at the front end, that is, the first sheet, and a bottom plate 4 arranged at the rear end, that is, the end, and every two plates A 1 is installed as the first unit, every two plates B 2 is installed as the second unit, the heat exchanger core adopts at least one first unit and at least one second unit, the first unit and the second unit in the heat exchanger core
  • the installation method is that the first unit is installed with the second unit, and then this combination is combined with the next first unit, such a periodic installation method, that is, every two plates A 1 are combined and then installed in combination with every two plates B 2 Then it is installed with the next two plates A 1, that is, the installation mode of the plate A 1 and the plate B 2 in the heat exchanger core is AABBAABBAA such periodic regular installation, the two adjacent plates A first medium channel that communicates with the outside is formed between A1, the plate A1 and the adjacent plate B2, and the plate B2 and the adjacent plate B
  • the shell assembly is installed on the outside of the heat exchanger core, the upper part has a first medium inlet, the bottom has a second medium outlet 6, and the inner hollow is formed with a lower chamber for installing the heat exchanger core and an upper chamber for the first medium to circulate.
  • the upper chamber has a first medium inlet and communicates with the first medium channel, the front bottom of the housing assembly has a second medium pipe connection port 91, and the second medium pipe 9 passes through the second medium
  • the pipe connection port 91 is connected to the second medium inlet 5 of the heat exchanger core, the first medium channel is not communicated with the second medium channel, and the second medium channel is not communicated with the upper chamber;
  • the first medium is gas
  • the second medium is liquid
  • the second medium namely cold water
  • the backward flow flows from the upper second medium outlet 6 to the upper part of the next adjacent second medium channel, and then the downward flow flows from the lower second medium outlet 6 to the lower part of the next adjacent second medium channel , so cycle, and finally return to flow out from the second medium outlet 6 of the end plate 3;
  • the first medium is the exhausted high-temperature flue gas entering the heat exchanger from the inlet of the shell assembly, passing through the upper chamber to the upper part of the first medium channel and entering the heat exchanger core, and the high-temperature flue gas of the first medium is in the narrow first medium channel.
  • the cooled flue gas Collected through the smoke pipe at a temperature slightly higher than the atmosphere and then discharged into the atmosphere;
  • the flow state of the second medium during the heat exchange process of the first medium is not tubular, the heat exchange efficiency is higher, and the pressure bearing strength of the heat exchanger core is greatly improved, and it is not easy to be blocked; at the same time, the high-temperature flue gas is the first medium.
  • the heat exchanger When entering the heat exchanger, it needs to pass a certain distance before entering the first medium channel of the heat exchanger core to exchange heat with the second medium.
  • the high-temperature flue gas has not been completely formed at the beginning.
  • the heat exchange can improve the utilization rate of energy, improve the heat exchange efficiency, and reduce the waste of energy; the setting of the first medium channel is narrow, which can improve the heat exchange efficiency.
  • the casing assembly includes an outer casing 7 and an inner casing 8 , and a second medium channel 2 is provided between the outer casing 7 and the inner casing 8 .
  • the second medium channel 2 communicates with the second medium channel 1.
  • the second medium channel 2 is configured to enable the second medium flowing out of the second medium channel to move uniformly around the heat exchanger.
  • the outer shell 7 includes a The front side cover plate 71 at the front end of the heat exchanger, the left side cover plate 72 and the right side cover plate 73 arranged on the left and right sides of the heat exchanger, and the rear side cover plate 74 arranged at the rear side of the heat exchanger.
  • the front side of the body 8 is provided with a through hole 81 that is adapted to the second medium outlet 6, and the front side cover 71, the left cover 72, and the right cover are provided with a second medium channel divided into an upper channel and an upper channel.
  • the blocking member 75 of the lower channel, the blocking member 75 of the front cover plate 71 is arranged above the through hole 81, so that the second medium channel and the lower channel are communicated with the second medium channel, and the front side shell
  • the upper part of the body is provided with a second medium outlet 2 78; after the second medium passes through the heat exchange of the heat exchanger core, from the second medium outlet 6 of the end plate 3 through the second inlet of the second medium channel, that is, it is arranged on the front side of the inner shell 8
  • the through hole 81 of the second medium channel enters the second lower channel of the second medium channel.
  • the second medium flows from the top to the bottom of the second lower channel of the second medium channel on the front side of the casing assembly, and then the second medium is under the action of the casing assembly.
  • the bottom of the lower channel of the second medium channel 2 and then flow from bottom to top to the upper channel of the second medium channel 2 formed on the rear side of the housing assembly (at this time, the overall flow direction of the second medium in the second medium channel 2 is from the lower channel to the upper channel of the second medium channel 2).
  • the bottom flows to the upper channel), and then under the action of the shell assembly, it flows forward evenly towards the upper channels on the left and right sides of the shell assembly, flows to the upper channel on the front side of the shell assembly, and finally flows from the upper channel on the upper part of the front cover 71.
  • the second medium outlet 6 flows out, and a second medium channel 2 is provided on the shell assembly, and the second medium channel is divided into an upper channel and a lower channel arranged around the shell assembly, and the upper and lower channels are connected, so that the second medium can be
  • the shell component flows evenly around, so that the first medium can fully exchange heat with the second medium, improve the utilization rate of energy, reduce the waste of resources, and at the same time, it can avoid the temperature of the first medium, namely the high-temperature flue gas entering the heat exchanger.
  • the left cover 72, the right cover 73 and the front cover 71 of the shell assembly are provided with barriers Part 75, which divides the second medium channel into an upper channel and an upper channel to guide the flow direction of the second medium; the second medium channel is divided into an upper channel and a lower channel, so that the second medium first flows along the lower channel and then flows to the upper part. channel, increase the flow of the second medium in the second medium channel 2, and improve the heat exchange efficiency.
  • the left cover plate 72 and the right cover plate 73 of the outer casing 7 are provided with flow guides 76 that make the second medium flow in an S-shape or a Z-shape.
  • the front side cover 71, left side cover 72, right side cover 73 and rear side cover 74 are provided with mounting pieces 77, the mounting pieces 77 at the bottom of the left side of the front side cover 71 and the left side cover 72
  • the mounting member 77 at the bottom of the right side is connected, so that the lower channel on the front side is connected with the lower channel on the left side.
  • the mounting members 77 of other components also play the same role, so that the second medium can flow around the casing.
  • the flow guides 76 are vertically crossed to increase the flow of the second medium channel and improve the heat exchange efficiency.
  • the mounting pieces 77 are arranged on the upper and lower parts of the left and right sides to connect the lower part of the casing assembly.
  • the passage communicates around and connects the upper passage of the shell assembly around, and plays the role of drainage at the same time.
  • the front surface of the plate A1 is provided with a plurality of first protruding parts 11 , and between each adjacent first protruding part 11 is a space for the first medium to circulate
  • the first gap 12 of the plate A 1 is connected with the first convex parts 11 of the adjacent plate A 1 and is firmly brazed
  • the plate B 2 is provided with a number of second The protruding part 21, a second gap 22 for the second medium to circulate between the adjacent second protruding parts 21, the second protruding part 21 of the plate B 2 and the adjacent plate A 1
  • the grooves on the back of the protruding parts are connected, the plate A1 is being installed with the adjacent plate A1, the first protruding parts 11 on the plate A1 are all set at a certain distance, and the plate A1 is After the sheet A1 is installed, the first medium can enter the first medium channel from the upper cavity and flow to the first medium channel formed by the first gap 12 and pass through a certain distance between the
  • the first protruding part 11 and the second protruding part 21 are both bosses, and they are evenly arranged, so that the first medium and the second medium can flow evenly, the plate B 2 and the plate A 1.
  • the second medium channel formed between the plate B 2 and the plate B 2 is provided with a transverse guide groove 23 to guide the second medium to flow in a uniform direction, and the length of the transverse guide groove 23 can be changed, that is, The second medium can be moved at a constant speed around the boss between the plates, and the length of the transverse diversion groove 23 is set to be smaller than the transverse width of the plate B2, and the flow of the second medium in the heat exchanger core can be prolonged, and the exchange rate can be improved. thermal performance.
  • the flow direction of the second medium in the present invention the first medium flows into the second medium channel 1 formed by the heat exchanger core from the second medium inlet of the second pipe connected to the diameter end plate 3, and flows according to the flow direction set between the plates , and then flows from the second medium outlet 6 above the front end plate 3 into the lower channel of the second medium channel 2 formed by the casing assembly through the through hole 81, and flows vertically downward to the bottom of the casing assembly, from the left and right
  • the sides are equally divided, flow around the lower channels on the left and right sides, and flow to the back of the heat exchanger to merge, and then flow vertically upward to the upper channel at the top, and then divide the upper channels on the left and right sides equally, and flow forward to the front of the heat exchanger
  • the sides meet and finally flow out from the second medium outlet 6 in the upper part of the front side housing;
  • the flow direction of the first medium that is, the flue gas: the high-temperature flue gas discharged from the fire burning pair flows vertically downward from the upper chamber at the top of the heat exchanger, and flows to the first medium channel between the plates formed by the heat exchanger core.
  • the medium channel is set narrowly, which can fully and efficiently exchange heat with the second medium in the second medium channel 1 adjacent to the left and right, so that the temperature of the flue gas decreases rapidly along the vertical and downward between the plates, and condensate is partially formed along the plate.
  • the cooled flue gas is collected through the flue pipe at a temperature slightly higher than that of the atmosphere and then discharged into the atmospheric environment, while the first medium flowing along the inner wall of the casing assembly is equal to the second medium channel on the casing assembly
  • the second medium in the second medium conducts heat exchange.
  • This heat exchanger has high heat exchange efficiency, stronger corrosion resistance, stronger pressure resistance, and resistance to deformation, which greatly improves the heat exchange new energy of the heat exchanger, which means that less gas can be used.
  • the production of water of the same temperature greatly saves gas resources and plays a good role in promoting national energy conservation and emission reduction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

本发明涉及壁挂炉主换热器，包括换热器芯，其包括至少两块板片A、至少两块板片B、设置在前端的端板以及设置在后端的底板，所述每两个板片A组合后与每两个板片B组合安装，所述每相邻两个板片A之间形成与外部连通的第一介质通道，所述板片A与相邻的板片B之间形成第二介质通道一，所述第一介质通道与第二介质通道一间隔设置，所述板片A、板片B以及端板上都分别设有相对应的第二介质进口、第二介质出口，所述第二介质通道一通过第二介质进口、第二介质出口连通；壳体组件，其安装在换热器芯的外部，内部中空形成有安装换热器芯的下腔室以及供第一介质流通的上腔室。本发明耐腐蚀抗变形。

Description

一种壁挂炉主换热器 技术领域
本发明涉及换热器技术领域，具体涉及一种壁挂炉主换热器。
 背景技术
通常的壁挂炉主换热器采用的是铜管翅片型式和不锈钢管翅片型式；铜管遇到高温烟气冷凝的冷凝水及其相应的酸性物很容易产生锈蚀，时间一长不仅外观有锈迹难看还易修饰破坏等产生一系列缺陷。而不锈钢管翅片型式的换热器，管子在高温烟气中不易腐蚀，易产生高温变形，且水流通过管子基本呈管状流态，换热效率不高；而一种新型壁挂炉主换热器不仅耐腐蚀，抗变形，同时大大提高主换热器的换热性能。换热器性能的增强意味着用更少的燃气产生相同温度的热水，巨大地节约了燃气资源，对推动国家节能减排发挥了良好的作用。
 技术问题
为了解决现有技术中的问题，本发明实施提供一种能提高主换热器的换热性能，且耐腐蚀抗变形的壁挂炉主换热器。
 技术解决方案
为了实现上述目的，本发明采用了以下的技术方案，一种壁挂炉主换热器，包括：
换热器芯，其包括至少两块板片A、至少两块板片B、设置在前端的端板以及设置在后端的底板，所述每两个板片A组合后与每两个板片B组合安装，所述每相邻两个板片A之间形成与外部连通的第一介质通道，所述板片A与相邻的板片B之间形成第二介质通道一，所述第一介质通道与第二介质通道一间隔设置，所述板片A、板片B以及端板上都分别设有相对应的第二介质进口、第二介质出口，所述第二介质通道一通过第二介质进口、第二介质出口连通；
壳体组件，其安装在换热器芯的外部，内部中空形成有安装换热器芯的下腔室以及供第一介质流通的上腔室，所述上腔室具有第一介质入口且与第一介质通道连通。
作为优选方案的，所述的壳体组件包括外壳体与内壳体，所述外壳体与内壳体之间设有第二介质通道二，所述第二介质通道二与第二介质通道一连通，第二介质通道二被构造成能使第二介质通道一流出的第二介质能绕换热器四周均匀运动。
作为优选方案的，所述外壳体包括设置在换热器前端的前侧盖板、设置在换热器左右两侧的左侧盖板与右侧盖板以及设置在换热器后侧的后侧盖板，所述内壳体前侧设有与第二介质出口相适配的通孔，所述前侧盖板、左侧盖板、右侧盖上设有将第二介质通道二分成上部通道与下部通道的阻隔件，所述前侧盖板的阻隔件设置在通孔上方，以使得所述第二介质通道二下部通道与第二介质通道二相通。
作为优选方案的，所述板片A正面设有若干第一凸出部，所述每相邻第一凸出部之间设有可供第一介质流通的第一间隙，板片A若干第一凸出部与相邻的板片A若干第一凸出部连接，所述板片B上设有若干第二凸出部，所述相邻第二凸出部之间设有可供第二介质流通的第二间隙，所述板片B第二凸出部与相邻板片A凸出部背面凹槽连接。
作为优选方案的，所述外壳体的左侧盖板与右侧盖板上设有使得第二介质呈S型或者Z型流动的导流件。
作为优选方案的，所述的板片B上设有横向导流槽。
作为优选方案的，所述的前侧盖板、左侧盖板、右侧盖板以及后侧盖板上设有安装件，以使得第二介质能绕壳体四周流动。
作为优选方案的，所述的前侧壳体上部设有第二介质出口。
 有益效果
本发明与现有技术相比具有以下优点：
  （1）第二介质即冷水从第二介质管道入口流向端板的第二介质进口流向第一个第二介质通道一底部，后向上流动从上部的第二介质出口流到下一个相邻的第二介质通道一上部，而后向下流动从下部的第二介质出口流到下一个相邻的第二介质通道一下部，如此循环，最后返回从端板的第二介质出口流出；
第一介质即为排出的高温烟气从壳体组件入口进入换热器，经过上腔室达到第一介质通道上部进入换热器芯，第一介质高温烟气在狭小的第一介质通道中与左右相邻的第二介质通道一进行充分高效换热，使得烟气温度沿着通道竖直向下快速减小，部分凝结成水，沿板间向下流动排出，被冷却后的烟气以略高于大气的温度通过烟管收集再排出到大气环境中；
     第二介质在于第一介质进行换热的过程中的流态不呈管状，换热效率更高，且大大提高了换热器芯承压强度，且不易堵塞；同时高温烟气即第一介质进入换热器时需经过一段距离后才进入到换热器芯的第一介质通道中与第二介质进行换热，高温烟气在一开始还未完全形成，经过一段距离后，在对其进行换热，能提高能源的利用率，提高换热效率，减少能源的浪费；第一介质通道设定狭小，能够提高换热效率。
（2）换热器芯外部也设有与第一介质换热的第二介质通道二，第二介质在经过换热器芯热交换后，从端板的第二介质出口经第二介质通道二入口即设置在内壳体前侧的通孔，进入至第二介质通道二下部通道，第二介质从壳体组件前侧的第二介质通道二下部通道由上往下，然后第二介质在壳体组件的作用下，均匀分别向壳体组件左右两侧形成的第二介质通道二下部通道流动（此时第二介质在第二介质通道二下部通道的总体流向为由前往后流动），达到壳体组件后侧形成的第二介质通道二下部通道的底部，然后由下至上流动至壳体组件后侧形成的第二介质通道二上部通道（此时第二介质在第二介质通道二的总体流向为由下部通道的底部流向上部通道），然后在壳体组件的作用下均匀的朝向壳体组件左右两侧的上部通道向前流动，流动至壳体组件前侧的上部通道，最后从前侧盖板上部的第二介质出口流出，在壳体组件上设有一个第二介质通道二，且第二介质通道二分为围绕壳体组件四周设置的上部通道和下部通道，上下通道连通，使第二介质能在壳体组件四周均匀流动，使得第一介质能与第二介质进行充分换热，提高能源的利用率，减少资源的浪费，同时能够避免第一介质即高温烟气在进入换热器时，温度过高，造成换热器各部件的损坏，提高换热器的使用寿命，防止腐蚀；同时壳体组件的左侧盖板、右侧盖板以及前侧盖板上都设有阻隔件，将第二介质通道二分成上部通道与上部通道，起到引导第二介质流向的作用；第二介质通道二分为上部通道下部通道，使得第二介质先沿下部通道流动后再流向上部通道，增加第二介质在第二介质通道二中的流程，提高换热效率。
 附图说明
图1 为本发明整体结构示意图；
图2为本发明前视图；
图3为本发明结构示意图2；
图4为本发明结构剖视图；
图5 为本发明换热器芯结构示意图；
图6为本发明换热器芯结构示意图2；
图7为图6 M处的结构示意图；
图8为本发明整体结构俯视图；
图9为本发明整体结构侧视图；
图10为本发明板片B的结构示意图1；
图11为本发明板片B的侧视图；
图12为本发明板片B的结构示意图2；
图13为本发明板片A的结构示意图1；
图14为本发明板片A的侧视图；
图15为本发明板片A的结构示意图2；
图16为本发明左侧盖板、右侧盖板的结构示意图；
图17为本发明左侧盖板、右侧盖板的的侧视图；
图18为本发明左侧盖板、右侧盖板的结构示意图2；
图19为本发明前侧盖板结构示意图；
图20为本发明前侧盖板侧视图；
图21为本发明前侧盖板结构示意图2；
图22为本发明壳体组件主视图；
图23为本发明壳体组件俯视图；
图24为本发明壳体组件爆炸图；
图25为本发明壳体组件侧视图；
图26为本发明壳体组件后侧盖板示意图；
图27为本发明壳体组件后侧盖板侧视图。
 本发明的最佳实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语 “上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的方法或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”、“固持”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内段的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用以限定本发明。
如图1至图27所示，一种壁挂炉主换热器，包括：
换热器芯，其包括至少两块板片A 1、至少两块板片B 2、设置在前端即首张的端板3以及设置在后端即末端的底板4，每两个板片A 1安装为第一单元，每两个板片B 2安装为第二单元，换热器芯采用至少一个第一单元与至少一个第二单元，换热器芯中第一单元与第二单元的安装方式为第一单元与第二单元安装然后这个组合再与下一个第一单元组合，如此周期安装方式，即所述每两个板片A 1组合后与每两个板片B 2组合安装然后再与下一个每两个板片A 1安装，即换热器芯中板片A 1与板片B 2的安装方式为AABBAABBAA如此的周期性规律安装，所述每相邻两个板片A 1之间形成与外部连通的第一介质通道，所述板片A 1与相邻的板片B 2之间、板片B 2与相邻的板片B 2之间形成内部具有固定容积的第二介质通道一，所述第一介质通道与第二介质通道一间隔设置，所述板片A 1、板片B 2以及端板3上都分别设有相对应的第二介质进口5、第二介质出口6，所述前后第二介质通道一通过第二介质进口5、第二介质出口6连通；
壳体组件，其安装在换热器芯的外部，上部具有第一介质入口，底部具有第二介质出口6，内部中空形成有安装换热器芯的下腔室以及供第一介质流通的上腔室，所述上腔室具有第一介质入口且与第一介质通道连通，所述壳体组件前侧底部具有第二介质管道连接口91，所述第二介质管道9穿过第二介质管道连接口91后与换热器芯的第二介质进口5相连，第一介质通道与第二介质通道一不相通、第二介质通道一与上腔室不相通；
    所述的第一介质为气体、所述的第二介质为液体；第二介质即冷水从第二介质管道入口流向端板3的第二介质进口5流向第一个第二介质通道一底部，后向上流动从上部的第二介质出口6流到下一个相邻的第二介质通道一上部，而后向下流动从下部的第二介质出口6流到下一个相邻的第二介质通道一下部，如此循环，最后返回从端板3的第二介质出口6流出；
第一介质即为排出的高温烟气从壳体组件入口进入换热器，经过上腔室达到第一介质通道上部进入换热器芯，第一介质高温烟气在狭小的第一介质通道中与左右相邻的第二介质通道一进行充分高效换热，使得烟气温度沿着通道竖直向下快速减小，部分凝结成水，沿板间向下流动排出，被冷却后的烟气以略高于大气的温度通过烟管收集再排出到大气环境中；
     第二介质在于第一介质进行换热的过程中的流态不呈管状，换热效率更高，且大大提高了换热器芯承压强度，且不易堵塞；同时高温烟气即第一介质进入换热器时需经过一段距离后才进入到换热器芯的第一介质通道中与第二介质进行换热，高温烟气在一开始还未完全形成，经过一段距离后，在对其进行换热，能提高能源的利用率，提高换热效率，减少能源的浪费；第一介质通道设定狭小，能够提高换热效率。
进一步地，如图16至图27所示，所述的壳体组件包括外壳体7与内壳体8，所述外壳体7与内壳体8之间设有第二介质通道二，所述第二介质通道二与第二介质通道一连通，第二介质通道二被构造成能使第二介质通道一流出的第二介质能绕换热器四周均匀运动，所述外壳体7包括设置在换热器前端的前侧盖板71、设置在换热器左右两侧的左侧盖板72与右侧盖板73以及设置在换热器后侧的后侧盖板74，所述内壳体8前侧设有与第二介质出口6相适配的通孔81，所述前侧盖板71、左侧盖板72、右侧盖上设有将第二介质通道二分成上部通道与下部通道的阻隔件75，所述前侧盖板71的阻隔件75设置在通孔81上方，以使得所述第二介质通道二下部通道与第二介质通道二相通，所述的前侧壳体上部设有第二介质出口二78；第二介质在经过换热器芯热交换后，从端板3的第二介质出口6经第二介质通道二入口即设置在内壳体8前侧的通孔81，进入至第二介质通道二下部通道，第二介质从壳体组件前侧的第二介质通道二下部通道由上往下，然后第二介质在壳体组件的作用下，均匀分别向壳体组件左右两侧形成的第二介质通道二下部通道流动（此时第二介质在第二介质通道二下部通道的总体流向为由前往后流动），达到壳体组件后侧形成的第二介质通道二下部通道的底部，然后由下至上流动至壳体组件后侧形成的第二介质通道二上部通道（此时第二介质在第二介质通道二的总体流向为由下部通道的底部流向上部通道），然后在壳体组件的作用下均匀的朝向壳体组件左右两侧的上部通道向前流动，流动至壳体组件前侧的上部通道，最后从前侧盖板71上部的第二介质出口6流出，在壳体组件上设有一个第二介质通道二，且第二介质通道二分为围绕壳体组件四周设置的上部通道和下部通道，上下通道连通，使第二介质能在壳体组件四周均匀流动，使得第一介质能与第二介质进行充分换热，提高能源的利用率，减少资源的浪费，同时能够避免第一介质即高温烟气在进入换热器时，温度过高，造成换热器各部件的损坏，提高换热器的使用寿命，防止腐蚀；同时壳体组件的左侧盖板72、右侧盖板73以及前侧盖板71上都设有阻隔件75，将第二介质通道二分成上部通道与上部通道，起到引导第二介质流向的作用；第二介质通道二分为上部通道下部通道，使得第二介质先沿下部通道流动后再流向上部通道，增加第二介质在第二介质通道二中的流程，提高换热效率。
进一步地，如图16至图27所示所述外壳体7的左侧盖板72与右侧盖板73上设有使得第二介质呈S型或者Z型流动的导流件76，所述的前侧盖板71、左侧盖板72、右侧盖板73以及后侧盖板74上设有安装件77，所述前侧盖板71左侧底部的安装件77与左侧盖板72右侧底部的安装件77连接，使得前侧的下部通道与左侧的下部通道连通，同理其他部件的安装件77也起到相同作用，以使得第二介质能绕壳体四周流动，所述导流件76竖直交叉设置，增加第二介质通道流程，提高换热效率，同时设有安装件77，所述安装件77设置在左右两侧的上部与下部，将壳体组件下部通道四周连通以及将壳体组件上部通道四周连通，同时起到引流作用。
进一步地，如图10至图15所示，所述板片A 1正面设有若干第一凸出部11，所述每相邻第一凸出部11之间设有可供第一介质流通的第一间隙12，板片A 1若干第一凸出部11与相邻的板片A 1若干第一凸出部11连接并钎焊牢固，所述板片B 2上设有若干第二凸出部21，所述相邻第二凸出部21之间设有可供第二介质流通的第二间隙22，所述板片B 2第二凸出部21与相邻板片A 1凸出部背面凹槽连接，板片A 1与相邻的板片A 1之间正正安装，板片A 1上的第一凸出部11都设有一定距离，板片A 1与板片A 1安装后，第一介质可从上腔道进入流向第一间隙12形成的第一介质通道纵向向下穿过一定的板间距离进行热交换，通过改变第一凸出部11的大小改变板间距离的宽窄，避免因为距离太宽，每个第一介质通道进入的过多，影响第一介质未能与第二介质进行充分换热，从而最大化利用第一介质的热量，提高换热效率；且所述第一凸出部11与第二凸出部21都为凸台，且都均匀设置，使得第一介质与第二介质能均匀流动，板片B 2与板片A 1、板片B 2与板片B 2之间形成的第二介质通道一内设有横向导流槽23，引导第二介质均匀定向流动，且可通过改变横向导流槽23的长度，即可让第二介质在板间绕凸台做等速运动，且设置横向导流槽23的长度小于板片B 2横向宽度，且能延长第二介质在换热器芯中的流程，提高换热性能。
本发明中的第二介质流向：第一介质从第二管道连接入口径端板3的第二介质入口流进换热器芯形成的第二介质通道一中，按照板间设置的流向进行流动，后从前侧的端板3上方的第二介质出口6经通孔81流入至壳体组件形成的第二介质通道二的下部通道，竖直往下流向壳体组件底部，从左侧与右侧均分，沿左右两侧的下部通道绕流，流向换热器的背部汇合，再竖直向上流向顶部的上部通道，然后进行左右两侧的上部通道均分，向前流向换热器前侧汇合，最后从前侧壳体的上部的第二介质出口6流出；
第一介质即烟气的流向：火烧制排出对的高温烟气，从换热器顶部的上腔室竖直往下流动，流向换热器芯形成的板间第一介质通道，由于第一介质通道设置狭小，可以与左右相邻的第二介质通道一中的第二介质进行充分高效换热，使得烟气温度沿着板间竖直向下快速减小，部分形成凝结水，沿板间向下排出；被冷却后的烟气以略高于大气的温度通过烟管收集再排到大气环境中，同时沿壳体组件内壁流动的第一介质等于壳体组件上的第二介质通道二内的第二介质进行换热，这种换热器换热高效，且耐腐蚀承压力更强，抗变形，大大提高了换热器的换热新能，意味着能用更少的燃气产生相同温度的水，巨大的节约了燃气资源，对推动国家节能减排发挥了良好的作用。
应当指出，以上实施例仅是本发明的代表性例子。本发明还可以有许多变形。凡是依据本发明的实质对以上实施例所作的任何简单修改、等同变化与修饰，均应认为属于本发明的保护范围。

Claims (8)

  1. 一种壁挂炉主换热器，其特征在于：包括
    换热器芯，其包括至少两块板片A（1）、至少两块板片B（2）、设置在前端的端板（3）以及设置在后端的底板（4），所述每两个板片A（1）组合后与每两个板片B（2）组合安装，所述每相邻两个板片A（1）之间形成与外部连通的供第一介质流通的第一介质通道，所述第一介质通道中的第一介质为气体，所述板片A（1）与相邻的板片B（2）之间形成供第二介质流通的第二介质通道一，所述的第二介质为液体，所述第一介质通道与第二介质通道一间隔设置，所述板片A（1）、板片B（2）以及端板（3）上都分别设有相对应的第二介质进口（5）、第二介质出口（6），所述第二介质通道一通过第二介质进口（5）、第二介质出口（6）连通；
    壳体组件，其安装在换热器芯的外部，内部中空形成有安装换热器芯的下腔室以及供第一介质流通的上腔室，所述上腔室具有第一介质入口且与第一介质通道连通。
  2. 根据权利要求1所述的一种壁挂炉主换热器，其特征在于，所述的壳体组件包括外壳体（7）与内壳体（8），所述外壳体（7）与内壳体（8）之间设有第二介质通道二，所述第二介质通道二与第二介质通道一连通，第二介质通道二被构造成使第二介质通道一流出的第二介质能绕换热器四周均匀运动。
  3. 根据权利要求2所述的一种壁挂炉主换热器，其特征在于，所述外壳体（7）包括设置在换热器前端的前侧盖板（71）、设置在换热器左右两侧的左侧盖板（72）与右侧盖板（73）以及设置在换热器后侧的后侧盖板（74），所述内壳体（8）前侧设有与第二介质出口（6）相适配的通孔（81），所述前侧盖板（71）、左侧盖板（72）、右侧盖板（73）上设有将第二介质通道二分成上部通道与下部通道的阻隔件（75），所述前侧盖板（71）的阻隔件（75）设置在通孔（81）上方，以使得所述第二介质通道二下部通道与第二介质通道二相通。
  4. 根据权利要求1所述的一种壁挂炉主换热器，其特征在于，所述板片A（1）正面设有若干第一凸出部（11），所述每相邻第一凸出部（11）之间设有可供第一介质流通的第一间隙（12），板片A（1）若干第一凸出部（11）与相邻的板片A（1）若干第一凸出部（11）连接，所述板片B（2）上设有若干第二凸出部（21），所述相邻第二凸出部（21）之间设有可供第二介质流通的第二间隙（22），所述板片B（2）第二凸出部（21）与相邻板片A（1）凸出部背面凹槽连接。
  5. 根据权利要求3所述的一种壁挂炉主换热器，其特征在于，所述外壳体（7）的左侧盖板（72）与右侧盖板（73）上设有使得第二介质呈S型或者Z型流动的导流件（76）。
  6. 根据权利要求4所述的一种壁挂炉主换热器，其特征在于，所述的板片B（2）上设有横向导流槽（23）。
  7. 根据权利要求5所述的一种壁挂炉主换热器，其特征在于，所述的前侧盖板（71）、左侧盖板（72）、右侧盖板（73）以及后侧盖板（74）上设有安装件（77），以使得第二介质能绕壳体四周流动。
  8. 根据权利要求7所述的一种壁挂炉主换热器，其特征在于，所述的前侧壳体（71）上部设有第二介质出口二（78）。
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