CN114608201A - Secondary heat exchanger of gas heating stove - Google Patents
Secondary heat exchanger of gas heating stove Download PDFInfo
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- CN114608201A CN114608201A CN202210035664.6A CN202210035664A CN114608201A CN 114608201 A CN114608201 A CN 114608201A CN 202210035664 A CN202210035664 A CN 202210035664A CN 114608201 A CN114608201 A CN 114608201A
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- Prior art keywords
- heat exchange
- flue gas
- shell
- water
- cavity
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- 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
- F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
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- 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
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- 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
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- 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
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- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1615—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits being inside a casing and extending at an angle to the longitudinal axis of the casing; the conduits crossing the conduit for the other heat exchange medium
- F28D7/1623—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits being inside a casing and extending at an angle to the longitudinal axis of the casing; the conduits crossing the conduit for the other heat exchange medium with particular pattern of flow of the heat exchange media, e.g. change of flow direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
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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
The invention discloses a secondary heat exchanger of a gas heating stove, which comprises a shell, an inner side water box, a plurality of heat exchange tubes, a water inlet interface, a water outlet interface and a flue gas rectifying plate. The shell is provided with a smoke inlet and a smoke outlet which are communicated with the inner cavity of the shell. The outer side end of one part of the heat exchange tube is communicated with the water inlet port, and the inner side end of the heat exchange tube is communicated with the inner side water box; the outer side end of the other part of the heat exchange tube is communicated with the water outlet port, and the inner side end of the other part of the heat exchange tube is communicated with the inner side water box. The flue gas rectifying plate provided with a plurality of through holes separates the inner cavity of the shell. The two parts of heat exchange tubes are positioned in the inner cavity of the shell and positioned in two different separation cavities; a flow passage is formed from the flue gas inlet to the flue gas outlet after sequentially passing through the two separation chambers. Through setting up the flue gas cowling panel, make the flue gas flow through more heat exchange tubes at the secondary heat exchanger intracavity, flow more evenly in the heat transfer region to can make the flue gas flow smoothly and just heat exchange efficiency improves.
Description
Technical Field
The invention belongs to the field of heat exchangers, and particularly relates to a secondary heat exchanger of a gas heating stove.
Background
The secondary heat exchanger of current gas heating stove receives the influence of factors such as inner structure and the speed that the flue gas flows, direction, and is uneven at the inside flow of secondary heat exchanger, forms the dead zone that flows easily, and it is inhomogeneous to lead to the secondary heat exchanger heat transfer, and the unable make full use of heat exchanger, and whole heat exchange efficiency is not high.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a secondary heat exchanger of a gas heating stove, so that flue gas flows through more heat exchange tubes in a cavity of the secondary heat exchanger, the flow in a heat exchange area is more uniform, and the heat exchange efficiency is improved.
In order to solve the technical problems, the invention adopts the technical scheme that:
a secondary heat exchanger of a gas heating stove comprises a shell, an inner side water box, a heat exchange pipe, a water inlet interface, a water outlet interface and a smoke rectifying plate, wherein the shell is provided with a smoke inlet and a smoke outlet which are communicated with an inner cavity of the shell; the smoke rectifying plate is provided with a plurality of through holes and divides the inner cavity of the shell into a plurality of cavities; the heat exchange tubes comprise a plurality of heat exchange tubes, the outer side ends of one part of the heat exchange tubes are communicated with the water inlet interface, the outer side ends of the other part of the heat exchange tubes are communicated with the water outlet interface, and the inner side ends of all the heat exchange tubes are communicated with the inner side water box; the two parts of heat exchange tubes are respectively positioned in two different separation chambers.
The heat exchange tube comprises a water inlet cavity, a water outlet cavity, a water inlet connector, a water outlet connector, a water inlet end, a water outlet cavity, a water outlet connector, a water inlet port, a water outlet port, a water inlet port, a water outlet port and a water outlet port, wherein the water inlet cavity and the water outlet cavity are mutually independent.
Through setting up business turn over water box to business turn over water box divide into intake antrum and play water cavity independent each other, like this, during the water that comes from the interface of intaking advanced the intake antrum that goes into business turn over water box, reentrant and the heat exchange tube of being connected of intake antrum, thereby make the hydroenergy that gets into in the heat exchange tube enough even, the problem that the unsmooth water yield of intaking is not enough in the heat exchange tube can not appear. Similarly, water from the heat exchange tube firstly enters the water outlet cavity of the water inlet and outlet box and then flows to the water outlet interface from the water outlet cavity, so that the problem that the water outlet of the heat exchange tube is not smooth and uneven due to the fact that the connection surface of the heat exchange tube and the water outlet interface is smaller because the water outlet interface is smaller is solved.
Furthermore, all the heat exchange tubes are arranged in parallel to form a heat exchange tube bundle, the heat exchange tubes connected with the water inlet cavity are arranged on the upper part of the inner cavity of the shell, the heat exchange tubes connected with the water outlet cavity are arranged on the lower part of the inner cavity of the shell, and the two parts of heat exchange tubes are separated by the flue gas rectifying plate.
The heat exchange tubes are arranged in parallel, so that the flue gas can smoothly pass through the gaps of the heat exchange tubes to heat the heat exchange tubes. The heat exchange tubes are divided into two parts, one part is a water inlet heat exchange tube connected with the water inlet cavity, the other part is a water outlet heat exchange tube connected with the water outlet cavity, the heat exchange tubes connected with the water inlet cavity are arranged on the upper part of the inner cavity of the shell, the heat exchange tubes connected with the water outlet cavity are arranged on the lower part of the inner cavity of the shell, smoke entering the inner cavity of the shell from the smoke inlet on the lower part can heat the water outlet heat exchange tubes on the lower part of the inner cavity of the shell firstly, the temperature of water in the water outlet heat exchange tubes is increased, the temperature of smoke losing part of heat is reduced, the smoke further flows upwards, water in the water inlet heat exchange tubes on the upper part of the inner cavity of the shell is heated, and the temperature of water in the water inlet heat exchange tubes is increased. Because the two parts of heat exchange tubes are separated by the smoke rectifying plate, smoke can be gathered at the lower part of the inner cavity of the shell to fully heat the water outlet heat exchange tube so as to improve the temperature of the water outlet heat exchange tube, and then flows upwards to enter the upper part of the inner cavity of the shell to heat the water inlet heat exchange tube after flowing through the smoke rectifying plate. Because of the existence of the flue gas rectifying plate, the flue gas can be blocked to be gathered at the lower part of the inner cavity of the shell firstly, and then flows upwards through the holes of the flue gas rectifying plate, so that the long-time contact heat exchange with the water outlet heat exchange pipe is realized.
Furthermore, an opening is formed in one side of the shell, the inner side water box and the heat exchange tube are pushed into the inner cavity of the shell from the opening in one side of the shell, the water inlet and outlet box is detachably fixed on the shell, and the side opening of the shell is sealed by the water inlet and outlet box.
Because the shell needs to be closed so as to heat the water in the heat exchange pipe after the smoke enters the inner cavity of the shell from the smoke inlet, and then the smoke is discharged from the smoke outlet, an opening needs to enter the inner cavity of the shell when the inner side water box and the heat exchange pipe are installed in the inner cavity of the shell, and the opening is closed after the inner side water box and the heat exchange pipe are installed in the inner cavity of the shell. The water inlet and outlet box is detachably fixed on the shell and closes the side opening of the shell, so that the water box and the heat exchange tube on the inner side can be closed in the inner cavity of the shell. In addition, a sealing ring is arranged at the opening for better sealing, so that the sealing effect is better when the opening of the water inlet and outlet box is closed.
Further, the flue gas cowling panel includes lower part riser, middle part diaphragm, upper portion riser and upper portion swash plate, and the top of lower part riser is connected to one side of middle part diaphragm, and the bottom of upper portion riser is connected to the opposite side of middle part diaphragm. The top of upper portion riser is connected to the one end of upper portion swash plate, and the other end of upper portion swash plate extends to the one side that deviates from the flue gas inlet.
Through setting up the flue gas cowling panel and setting it to the structure of being connected by lower riser, middle part diaphragm, upper portion riser and upper portion swash plate, set up upper portion riser and lower riser respectively from top to bottom at the middle part diaphragm, the middle part diaphragm falls into two parts about with the heat exchange tube. And the top of upper portion riser is connected to the one end of upper portion swash plate, and the other end of upper portion swash plate extends to the one side that deviates from the flue gas import, such structure makes the flue gas flow to the shell inner chamber rear end when ascending after getting into from the flue gas import, can get into the space that upper portion riser and upper portion swash plate separated the formation, the flue gas flows to the rear end of the heat exchange tube of intaking like this and discharges to the exhanst gas outlet from the rear end, make play water heat exchange tube rear end and intake heat exchange tube rear end homoenergetic have the flue gas to flow and heat, can not form the low that local stagnant space caused heating efficiency, thereby can make the flue gas flow smoothly and heat exchange efficiency improve.
Furthermore, a plurality of holes are formed in the lower vertical plate, the middle transverse plate and the upper vertical plate of the flue gas rectifying plate.
A plurality of holes are formed in the lower vertical plate, the middle transverse plate and the upper vertical plate of the flue gas rectifying plate, so that flue gas flows into the inner cavity of the shell from a flue gas inlet and then flows into the cavity of the shell where the water outlet heat exchange tube is located through the holes in the lower vertical plate; the flue gas that gets into the shell cavity at water heat exchange tube place, wherein a part of flue gas upwards flows through the hole on the middle part diaphragm again, get into the shell cavity at water heat exchange tube place, another part flue gas flows to water heat exchange tube rear end upwards flow to get into the space that upper portion riser and upper portion swash plate separated and form again, get into the shell cavity at water heat exchange tube place through the hole on the upper portion riser again, the flue gas just flows to the rear end of water heat exchange tube and discharges to the exhanst gas outlet from the rear end like this, make water heat exchange tube rear end and water heat exchange tube rear end homoenergetic have the flue gas to flow and heat, can not form the low that local stagnant space caused heating efficiency, thereby can make the flue gas flow smoothly and heat exchange efficiency improve.
Further, one side end of the upper inclined plate, which is far away from the smoke inlet, extends downwards.
The structure design enables the flue gas to flow upwards to enter a space formed by the upper vertical plate and the upper inclined plate in a separated mode, the flue gas can smoothly flow through holes in the upper vertical plate along the inclined angle of the upper inclined plate and then enter a shell cavity where the water inlet heat exchange tube is located, and the flow of the flue gas is utilized, so that local non-flow of the flue gas cannot be formed.
Furthermore, the lower vertical plate of the flue gas rectifying plate is adjacent to and faces the flue gas inlet, a plurality of rows of holes are arranged on the lower vertical plate, the hole diameter of the middle hole of each row of holes is small, and the hole diameters of the two side holes are large.
Because the lower vertical plate of the flue gas rectifying plate is adjacent to and faces the flue gas inlet, but the area of the lower vertical plate is larger than the diameter of the flue gas inlet, in order to ensure that flue gas can more uniformly flow into the shell cavity where the water outlet heat exchange tube is positioned after entering the shell cavity from the flue gas inlet, a plurality of rows of holes are arranged on the lower vertical plate, the hole diameter of the middle hole of each row of holes is small, and the hole diameters of two side holes are large, so that the flue gas can more uniformly flow into the shell cavity where the water outlet heat exchange tube is positioned, and the heating is uniform.
Furthermore, a certain distance is reserved between the vertical plate at the lower part of the flue gas rectifying plate and the flue gas inlet.
In order to enable the flue gas to better enter a shell cavity where the water outlet heat exchange tube is arranged, a certain distance is reserved between the vertical plate at the lower part of the flue gas rectifying plate and the flue gas inlet. Therefore, the flue gas firstly enters the space between the flue gas inlet and the lower vertical plate and is filled in the space, so that the area filled by the flue gas in the space is larger than the diameter of the flue gas inlet, the flue gas can better enter a shell cavity where the water outlet heat exchange tube is positioned, and good flue gas flowing and heat exchange effects are formed.
Furthermore, a flue gas flow channel is arranged from the flue gas inlet to the lower vertical plate, to the shell cavity where the heat exchange tube connected with the water outlet cavity is located, to the middle transverse plate, to the upper vertical plate, and then to the shell cavity where the heat exchange tube connected with the water inlet cavity is located, to the flue gas outlet.
The flue gas runner formed by the structural arrangement enables the flue gas flow kinetic energy to better cover the space where the water outlet heat exchange tube and the water inlet heat exchange tube are located, heats the water in the heat exchange tubes, and realizes a better heat exchange effect.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
A secondary heat exchanger of a gas heating stove comprises a shell, an inner side water box, a plurality of heat exchange tubes, a water inlet interface, a water outlet interface and a smoke rectifying plate. The shell is provided with a smoke inlet and a smoke outlet which are communicated with the inner cavity of the shell. The outer side end of one part of the heat exchange tube is communicated with the water inlet port, and the inner side end of the heat exchange tube is communicated with the inner side water box; the outer side end of the other part of the heat exchange tube is communicated with the water outlet port, and the inner side end of the other part of the heat exchange tube is communicated with the inner side water box. The flue gas rectifying plate provided with a plurality of through holes separates the inner cavity of the shell. The two parts of heat exchange tubes are positioned in the inner cavity of the shell and positioned in two different separation cavities; a flow passage is formed from the flue gas inlet to the flue gas outlet after sequentially passing through the two separation chambers. According to the secondary heat exchanger for the gas heating furnace, the flue gas flows into the inner cavity of the shell from the flue gas inlet and then flows into the cavity of the shell where the water outlet heat exchange pipe is located through the hole of the lower vertical plate; the flue gas that gets into the shell cavity at the heat exchange tube of water play, wherein a part of flue gas upwards flows through the hole on the middle part diaphragm again, get into the shell cavity at the heat exchange tube of intaking place, another part flue gas flows to the heat exchange tube rear end of water play and upwards flows to getting into the space that upper portion riser and upper portion swash plate separated and form, get into the shell cavity at the heat exchange tube of intaking place through the hole on the riser again, the flue gas just flows to the rear end of the heat exchange tube of intaking just like this and discharges to the exhanst gas outlet from the rear end, make the heat exchange tube rear end of water play and the heat exchange tube rear end of intaking all can have the flue gas to flow and heat, make the flue gas flow through more heat exchange tubes at the secondary heat exchanger intracavity, flow in the heat transfer region is more even, thereby can make the flue gas flow smoothly and heat exchange efficiency improves.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is an exploded schematic view of a secondary heat exchanger of a gas heating stove of the present invention;
FIG. 2 is a schematic view of the interior of a secondary heat exchanger of a gas heating stove of the present invention;
FIG. 3 is a schematic view of a secondary heat exchanger of a gas heating stove of the present invention;
FIG. 4 is a schematic view of a flue gas rectification plate of a secondary heat exchanger of a gas heating stove of the present invention;
fig. 5 is a schematic view of a water path structure of a secondary heat exchanger of the gas heating stove.
In the figure: 1. the device comprises a shell 2, a sealing ring 3, an inner side water box 4, a heat exchange tube 5, a flue gas rectifying plate 6, a water inlet connector 7, a water inlet and outlet water box 8, a water outlet connector 9, a water inlet cavity 10, a water outlet cavity 11, a flue gas outlet 12, a flue gas inlet 13, a condensate water outlet 14, a rectifying hole 15, a lower vertical plate 16, a middle transverse plate 17, an upper vertical plate 18 and an upper inclined plate.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 5, the secondary heat exchanger for a gas heating stove of the present invention includes a housing 1, an inside water box 3, a plurality of heat exchange tubes 4, a water inlet port 6, a water outlet port 8, and a flue gas rectifying plate 5. The shell 1 is provided with a flue gas inlet 12 and a flue gas outlet 11, and the flue gas inlet 12 and the flue gas outlet 11 are communicated with the inner cavity of the shell 1. The outer side end of one part of the heat exchange tube 4 is communicated with the water inlet interface 6, and the inner side end is communicated with the inner side water box 3; the outer side end of the other part of the heat exchange tube 4 is communicated with the water outlet port 8, and the inner side end is communicated with the inner side water box 3. The inner cavity of the shell is separated by a flue gas rectifying plate 5 provided with a plurality of through holes. The two parts of heat exchange tubes are positioned in the inner cavity of the shell and positioned in two different separation cavities; a flow passage is formed from the flue gas inlet to the flue gas outlet after sequentially passing through the two separation chambers.
The invention relates to a secondary heat exchanger of a gas heating stove, which further comprises a water inlet and outlet box 7, wherein the water inlet and outlet box 7 comprises a water inlet cavity 9 and a water outlet cavity 10 which are mutually independent, the water inlet cavity 9 is connected with a water inlet connector 6, the water outlet cavity 10 is connected with a water outlet connector 8, the outer side end of one part of heat exchange tubes 4 is connected with the water inlet cavity 9 and then communicated with the water inlet connector 6, the inner side end of the other part of heat exchange tubes 4 is communicated with an inner side water box 3, the outer side end of the other part of heat exchange tubes 4 is connected with the water outlet cavity 10 and then communicated with the water outlet connector 8, and the inner side end of the other part of heat exchange tubes 4 is communicated with the inner side water box 3.
Through setting up business turn over water box 7 to business turn over water box divide into mutually independent intake antrum and play water cavity, like this, the water that comes in from water inlet interface 6 is advanced to be gone into in the intake antrum 9 of business turn over water box 7, and reentrant is connected with the intake antrum in the heat exchange tube 4, thereby makes the hydroenergy that gets into in the heat exchange tube enough even, the not enough problem of the unsmooth water yield of intaking in the heat exchange tube can not appear. Similarly, water coming out of the heat exchange tube 4 firstly enters the water outlet cavity 10 of the water inlet and outlet box 7 and then flows to the water outlet interface 8 from the water outlet cavity 10, so that the problem of unsmooth and uneven water outlet of the heat exchange tube caused by the fact that the heat exchange tube is smaller in the connection surface with the heat exchange tube due to the fact that the water outlet interface 8 is smaller is solved.
Referring to fig. 1, 2 and 5, all the heat exchange tubes 4 are arranged in parallel to form a heat exchange tube bundle, the heat exchange tube 4 connected with the water inlet cavity 9 is arranged at the upper part of the inner cavity of the shell, the heat exchange tube connected with the water outlet cavity 10 is arranged at the lower part of the inner cavity of the shell, and the two parts of the heat exchange tubes 4 are separated by the flue gas rectifying plate 5.
A plurality of heat exchange tubes 4 are arranged in parallel, so that flue gas can smoothly pass through gaps of the heat exchange tubes to heat the heat exchange tubes. The heat exchange tubes are divided into two parts, one part is a water inlet heat exchange tube connected with the water inlet cavity, the other part is a water outlet heat exchange tube connected with the water outlet cavity, the heat exchange tubes connected with the water inlet cavity are arranged on the upper part of the inner cavity of the shell, the heat exchange tubes connected with the water outlet cavity are arranged on the lower part of the inner cavity of the shell, smoke entering the inner cavity of the shell from the smoke inlet on the lower part can heat the water outlet heat exchange tubes on the lower part of the inner cavity of the shell firstly, the temperature of water in the water outlet heat exchange tubes is increased, the temperature of smoke losing part of heat is reduced, the smoke further flows upwards, water in the water inlet heat exchange tubes on the upper part of the inner cavity of the shell is heated, and the temperature of water in the water inlet heat exchange tubes is increased. Because the two parts of heat exchange tubes are separated by the smoke rectifying plate, smoke can be gathered at the lower part of the inner cavity of the shell to fully heat the water outlet heat exchange tube so as to improve the temperature of the water outlet heat exchange tube, and then flows upwards to enter the upper part of the inner cavity of the shell to heat the water inlet heat exchange tube after flowing through the smoke rectifying plate. Because of the existence of the flue gas rectifying plate, the flue gas can be blocked to be gathered at the lower part of the inner cavity of the shell firstly, and then flows upwards through the holes of the flue gas rectifying plate, so that the long-time contact heat exchange with the water outlet heat exchange pipe is realized.
Referring to fig. 1 and 2, an opening is formed in one side of the housing 1, the inner water box 3 and the heat exchange tube 4 are pushed into the inner cavity of the housing from the opening in one side of the housing, the water inlet and outlet box 7 is detachably fixed on the housing 1, and the water inlet and outlet box 7 closes the opening in the side of the housing 1. The end of the heat exchange tube close to the side opening is an outer side end, and the end close to the inner side water box is an inner side end.
Because the shell 1 needs to be closed so as to heat the water in the heat exchange tube 4 after the smoke enters the inner cavity of the shell from the smoke inlet 12, and then the smoke is discharged from the smoke outlet 11, an opening needs to be formed when the inner side water box 3 and the heat exchange tube 4 are installed in the inner cavity of the shell, and the opening is closed after the inner side water box and the heat exchange tube are installed in the inner cavity of the shell. In the invention, the water inlet and outlet box 7 is detachably fixed on the shell 1 and closes the side opening of the shell, so that the water box at the inner side and the heat exchange tube can be closed in the inner cavity of the shell. In addition, a sealing ring 2 is arranged at the opening for better sealing, so that the sealing effect is better when the water inlet and outlet box 7 closes the opening of the shell.
Referring to fig. 2 and 4, the flue gas rectifying plate 5 includes a lower vertical plate 15, a middle horizontal plate 16, an upper vertical plate 17 and an upper inclined plate 18, wherein one side of the middle horizontal plate 16 is connected to the top end of the lower vertical plate 15, and the other side of the middle horizontal plate 16 is connected to the bottom end of the upper vertical plate 17. One end of the upper inclined plate 18 is connected to the top end of the upper vertical plate 17, and the other end of the upper inclined plate 18 extends to the side away from the flue gas inlet 13.
The flue gas rectifying plate 5 is arranged into a structure connected by a lower vertical plate 15, a middle transverse plate 16, an upper vertical plate 17 and an upper inclined plate 18, the upper vertical plate and the lower vertical plate are respectively arranged above and below the middle transverse plate, and the middle transverse plate divides all the heat exchange tubes 4 into an upper part and a lower part. And the top of upper portion riser is connected to the one end of upper portion swash plate 18, and the other end of upper portion swash plate 18 extends to the one side that deviates from flue gas inlet 12, upper portion swash plate 18 is the guide plate, such structure makes the flue gas flow to the shell inner chamber rear end when ascending after getting into from the flue gas inlet, can get into the space that upper portion riser 17 and upper portion swash plate 18 separated the formation, flue gas flows to the rear end of the heat exchange tube of intaking like this and discharges to the exhanst gas outlet from the rear end, make water heat exchange tube rear end and intake heat exchange tube rear end homoenergetic flue gas flow heat, can not form the low that local stagnant space caused heating efficiency, thereby can make the flue gas flow smoothly and heat exchange efficiency improve.
As shown in fig. 4, a plurality of holes are arranged on the lower vertical plate 15, the middle cross plate 16 and the upper vertical plate 17 of the flue gas rectifying plate 5 as rectifying holes 14.
A plurality of holes are formed in the lower vertical plate 15, the middle transverse plate 16 and the upper vertical plate 17 of the flue gas rectifying plate, so that flue gas flows into the inner cavity of the shell from the flue gas inlet 12 and then flows into the cavity of the shell where the water outlet heat exchange tube is located through the holes in the lower vertical plate 15; the flue gas that gets into the shell cavity that the heat exchange tube of going out is located, wherein a part of flue gas upwards flows through the hole on middle part diaphragm 16 again, get into the shell cavity that the heat exchange tube of intaking was located, another part flue gas flows to the heat exchange tube rear end of going out upwards and flows to getting into the space that upper portion riser 17 and upper portion swash plate 18 separated and form again, get into the shell cavity that the heat exchange tube of intaking was located through the hole on upper portion riser 17 again, the flue gas just so flows to the rear end of the heat exchange tube of intaking and discharges to exhanst gas outlet 11 from the rear end, make play heat exchange tube rear end and intake heat exchange tube rear end all can have the flue gas to flow and heat, can not form the local stagnant space and cause the low of heating efficiency, can adjust the flue gas flow through adjusting rectification hole 14, thereby can make the flue gas flow smoothly and heat exchange efficiency improve.
As shown in fig. 2 and 4, the upper sloping plate 18 extends downward away from one side end of the flue gas inlet 12.
Due to the structural design, the flue gas flows upwards to enter a space formed by the upper vertical plate 17 and the upper inclined plate 18 in a separating manner, can smoothly flow through the rectifying holes 14 of the upper vertical plate 17 along the oblique angle of the upper inclined plate 18 and then enters a shell cavity where the water inlet heat exchange tube is positioned, and the flow of the flue gas is utilized, so that the phenomenon that the local flue gas does not flow is avoided.
Referring to fig. 3 and 4, the lower vertical plate 15 of the flue gas rectifying plate is adjacent to and faces the flue gas inlet 12, a plurality of rows of holes are arranged on the lower vertical plate 15 as rectifying holes 14, the hole diameter of the middle hole of each row of holes is small, and the hole diameters of two side holes are large.
Because the lower vertical plate 15 of the flue gas rectifying plate 5 is adjacent to and faces the flue gas inlet, but the area of the lower vertical plate is larger than the diameter of the flue gas inlet, in order to ensure that flue gas can more uniformly flow into the shell cavity where the water outlet heat exchange tube is positioned after entering the shell cavity from the flue gas inlet, the lower vertical plate 15 is provided with a plurality of rows of holes, the middle holes of each row of holes are small in aperture, and the two side holes are large in aperture, so that the flue gas can more uniformly flow into the shell cavity where the water outlet heat exchange tube is positioned, and the heating is uniform.
Referring to fig. 2 and 4, the lower vertical plate 15 of the flue gas rectifying plate 5 is spaced from the flue gas inlet 12.
In order to enable the flue gas to better enter the housing chamber where the water outlet heat exchange pipe is located, a certain distance is reserved between the lower vertical plate 15 of the flue gas rectifying plate 5 and the flue gas inlet 12. Therefore, the flue gas firstly enters the space between the flue gas inlet and the lower vertical plate and is filled in the space, so that the area filled by the flue gas in the space is larger than the diameter of the flue gas inlet, the flue gas can better enter a shell cavity where the water outlet heat exchange tube is positioned, and good flue gas flowing and heat exchange effects are formed.
In this embodiment, the flue gas cowling panel 5 is installed at the shell inboard through the draw-in groove, and in other embodiments, flue gas cowling panel 5 can be fixed on business turn over water box 7 and inboard water box 3 through welded mode. The whole flue gas rectifying plate 5 can be integrated or can be separated from each other.
The flue gas rectifying plate 5 is provided with a rectifying hole 14, the flow of flue gas can be adjusted by adjusting the position, the number, the size and the like of the flow hole, and the middle transverse plate 16 of the flue gas rectifying plate 5 divides the interior of the secondary heat exchanger into a lower convection heat transfer area and an upper condensation area, namely, the lower area of the inner cavity of the shell where the heat exchange tube connected with the water outlet cavity is located and the upper area of the inner cavity of the shell where the heat exchange tube 4 connected with the water inlet cavity is located. The flue gas enters the secondary heat exchanger, is rectified by the flue gas rectifying plate 5 and then passes through the convection heat exchange area, the temperature of water in a heat exchange pipe pipeline in the convection heat exchange area is higher than that of water in a heat exchange pipe pipeline in the condensation area, the heat of the flue gas is mainly absorbed in a convection heat exchange mode, the flue gas enters the condensation area after being rectified by the rectifying holes 14 of the flue gas rectifying plate 5, the temperature of the flue gas is reduced after passing through the convection heat exchange area, when the flue gas flows through the surface of the heat exchange pipe 4 with the lower water temperature in the condensation area, water vapor in the flue gas is more easily condensed, and therefore a condensed water outlet 13 is formed in the bottom of the shell. The heat released by condensation is absorbed by water, and the heat exchange efficiency is further improved.
The invention relates to a secondary heat exchanger of a gas heating stove, which is provided with a flue gas flow channel from a flue gas inlet 12 to a lower vertical plate 15 to a shell cavity where a heat exchange pipe connected with a water outlet cavity 10 is arranged, to a middle transverse plate 16, to an upper vertical plate 17 to a shell cavity where a heat exchange pipe connected with a water inlet cavity 9 is arranged, to a flue gas outlet 11. The smoke channel formed by the structural arrangement enables smoke flow kinetic energy to better cover the space where the water outlet heat exchange tube and the water inlet heat exchange tube are located, water in the heat exchange tube 4 is heated, and a better heat exchange effect is realized.
The invention relates to a secondary heat exchanger of a gas heating stove, which comprises a shell, an inner side water box, a plurality of heat exchange tubes, a water inlet interface, a water outlet interface and a flue gas rectifying plate. The shell is provided with a smoke inlet and a smoke outlet which are communicated with the inner cavity of the shell. The outer side end of one part of the heat exchange tube is communicated with the water inlet port, and the inner side end of the heat exchange tube is communicated with the inner side water box; the outer side end of the other part of the heat exchange tube is communicated with the water outlet port, and the inner side end of the other part of the heat exchange tube is communicated with the inner side water box. The flue gas rectifying plate provided with a plurality of through holes separates the inner cavity of the shell. The two parts of heat exchange tubes are positioned in the inner cavity of the shell and positioned in two different separation cavities; a flow passage is formed from the flue gas inlet to the flue gas outlet after sequentially passing through the two separation chambers. According to the secondary heat exchanger for the gas heating furnace, the flue gas flows into the inner cavity of the shell from the flue gas inlet and then flows into the cavity of the shell where the water outlet heat exchange pipe is located through the hole of the lower vertical plate; the flue gas that gets into the shell cavity at the heat exchange tube of water play, wherein a part of flue gas upwards flows through the hole on the middle part diaphragm again, get into the shell cavity at the heat exchange tube of intaking place, another part flue gas flows to the heat exchange tube rear end of water play and upwards flows to getting into the space that upper portion riser and upper portion swash plate separated and form, get into the shell cavity at the heat exchange tube of intaking place through the hole on the riser again, the flue gas just flows to the rear end of the heat exchange tube of intaking just like this and discharges to the exhanst gas outlet from the rear end, make the heat exchange tube rear end of water play and the heat exchange tube rear end of intaking all can have the flue gas to flow and heat, make the flue gas flow through more heat exchange tubes at the secondary heat exchanger intracavity, flow in the heat transfer region is more even, thereby can make the flue gas flow smoothly and heat exchange efficiency improves.
The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and although the present invention has been disclosed by the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications to the equivalent embodiments by using the technical contents disclosed above without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (10)
1. The utility model provides a gas heating stove secondary heat exchanger which characterized in that:
comprises a shell, an inner side water box, a heat exchange pipe, a water inlet interface, a water outlet interface and a smoke rectifying plate,
the shell is provided with a smoke inlet and a smoke outlet which are communicated with the inner cavity of the shell;
the smoke rectifying plate is provided with a plurality of through holes and divides the inner cavity of the shell into a plurality of cavities;
the heat exchange tubes comprise a plurality of heat exchange tubes, the outer side ends of one part of the heat exchange tubes are communicated with the water inlet interface, the outer side ends of the other part of the heat exchange tubes are communicated with the water outlet interface, and the inner side ends of all the heat exchange tubes are communicated with the inner side water box;
the two parts of heat exchange tubes are respectively positioned in two different separation chambers.
2. A gas heating stove secondary heat exchanger according to claim 1, characterized in that:
also comprises a water inlet and outlet box, the water inlet and outlet box comprises a water inlet cavity and a water outlet cavity which are mutually independent, the water inlet cavity is connected with the water inlet interface, the water outlet cavity is connected with the water outlet interface,
the outer side end of one part of the heat exchange tube is connected with the water inlet cavity and further communicated with the water inlet port, the inner side end is communicated with the inner side water box,
the outer side end of the other part of the heat exchange tube is connected with the water outlet cavity and further communicated with the water outlet port, and the inner side end of the heat exchange tube is communicated with the inner side water box.
3. A gas heating stove secondary heat exchanger according to claim 2, characterized in that: all the heat exchange tubes are arranged in parallel to form a heat exchange tube bundle,
the heat exchange tube connected with the water inlet cavity is arranged at the upper part of the inner cavity of the shell, the heat exchange tube connected with the water outlet cavity is arranged at the lower part of the inner cavity of the shell, and the two parts of heat exchange tubes are separated by the smoke rectifying plate.
4. A gas heating stove secondary heat exchanger according to claim 2, characterized in that: the shell is provided with an opening on one side, the inner side water box and the heat exchange tube are pushed into the inner cavity of the shell from the opening on one side of the shell, the water inlet and outlet box is detachably fixed on the shell, and the side opening of the shell is sealed by the water inlet and outlet box.
5. A gas heating stove secondary heat exchanger according to claim 1, characterized in that: the flue gas rectifying plate comprises a lower vertical plate, a middle transverse plate, an upper vertical plate and an upper inclined plate,
one side of the middle transverse plate is connected with the top end of the lower vertical plate, the other side of the middle transverse plate is connected with the bottom end of the upper vertical plate,
the top of upper portion riser is connected to the one end of upper portion swash plate, and the other end of upper portion swash plate extends to the one side that deviates from the flue gas inlet.
6. The gas heating stove secondary heat exchanger of claim 2, characterized in that: and a plurality of holes are formed in the lower vertical plate, the middle transverse plate and the upper vertical plate of the flue gas rectifying plate.
7. A gas heating stove secondary heat exchanger according to claim 6, characterized in that: the side end of the upper inclined plate, which is far away from the smoke inlet, extends downwards.
8. A gas heating stove secondary heat exchanger according to claim 6, characterized in that: the lower vertical plate of the flue gas rectifying plate is adjacent to and faces the flue gas inlet, a plurality of rows of holes are arranged on the lower vertical plate, the hole diameter of the middle hole of each row of holes is small, and the hole diameters of the two side holes are large.
9. A gas heating stove secondary heat exchanger according to claim 6, characterized in that: the lower vertical plate of the flue gas rectifying plate is at a certain distance from the flue gas inlet.
10. A gas heating stove secondary heat exchanger according to claim 6, characterized in that: the flue gas flow channel is provided with a flue gas flow channel from a flue gas inlet to a lower vertical plate to a shell cavity where a heat exchange tube connected with a water outlet cavity is located, to a middle transverse plate, to an upper vertical plate to a shell cavity where a heat exchange tube connected with a water inlet cavity is located, and to a flue gas outlet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210035664.6A CN114608201A (en) | 2022-01-13 | 2022-01-13 | Secondary heat exchanger of gas heating stove |
| PCT/CN2022/132830 WO2023134298A1 (en) | 2022-01-13 | 2022-11-18 | Secondary heat exchanger for gas heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210035664.6A CN114608201A (en) | 2022-01-13 | 2022-01-13 | Secondary heat exchanger of gas heating stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114608201A true CN114608201A (en) | 2022-06-10 |
Family
ID=81857221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210035664.6A Pending CN114608201A (en) | 2022-01-13 | 2022-01-13 | Secondary heat exchanger of gas heating stove |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114608201A (en) |
| WO (1) | WO2023134298A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023134298A1 (en) * | 2022-01-13 | 2023-07-20 | 青岛经济技术开发区海尔热水器有限公司 | Secondary heat exchanger for gas heating furnace |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202853118U (en) * | 2012-09-21 | 2013-04-03 | 广东万家乐燃气具有限公司 | Secondary heat exchanger used for gas heating stove |
| CN203687368U (en) * | 2013-07-15 | 2014-07-02 | 盛水祥 | Secondary heat exchanger of fuel gas heating water heater |
| CN204100585U (en) * | 2014-08-13 | 2015-01-14 | 广东万和新电气股份有限公司 | Condensing heat exchanger and there is its forced exhaust gas water heater |
| CN105486122B (en) * | 2016-02-03 | 2019-02-12 | 浙江广涛卫厨有限公司 | A kind of condensation secondary heat exchanger |
| CN106642692B (en) * | 2016-07-28 | 2022-08-19 | 艾欧史密斯(中国)热水器有限公司 | Condensation gas water heater and condensation heat exchanger |
| CN111435031B (en) * | 2019-01-14 | 2021-08-20 | 宁波方太厨具有限公司 | Heat exchanger and gas water heater using same |
| CN212205073U (en) * | 2020-01-08 | 2020-12-22 | 宁波方太厨具有限公司 | Heat exchange device for gas water heater and gas water heater |
| CN214468731U (en) * | 2021-02-06 | 2021-10-22 | 北京建筑大学 | Flue gas cooling and condensing integrated heat exchanger |
| RU2763984C1 (en) * | 2021-06-07 | 2022-01-12 | Вадим Сергеевич Рыжов | Long burning heating stove |
| CN114608201A (en) * | 2022-01-13 | 2022-06-10 | 青岛经济技术开发区海尔热水器有限公司 | Secondary heat exchanger of gas heating stove |
-
2022
- 2022-01-13 CN CN202210035664.6A patent/CN114608201A/en active Pending
- 2022-11-18 WO PCT/CN2022/132830 patent/WO2023134298A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023134298A1 (en) * | 2022-01-13 | 2023-07-20 | 青岛经济技术开发区海尔热水器有限公司 | Secondary heat exchanger for gas heating furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023134298A1 (en) | 2023-07-20 |
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