CN212929990U - Full premix combustion chamber and water heater - Google Patents
Full premix combustion chamber and water heater Download PDFInfo
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- CN212929990U CN212929990U CN202021521889.5U CN202021521889U CN212929990U CN 212929990 U CN212929990 U CN 212929990U CN 202021521889 U CN202021521889 U CN 202021521889U CN 212929990 U CN212929990 U CN 212929990U
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Abstract
The utility model discloses a full premix combustion chamber to a water heater with full premix combustion chamber is disclosed, wherein the full premix combustion chamber includes: the combustion chamber cover is provided with a first connecting plate at the periphery; the outer periphery of the burner is provided with a second connecting plate which is fixedly connected to the lower side of the first connecting plate, and a first limiting cavity is arranged between the first connecting plate and the second connecting plate; the rectifying plate is arranged in the first limiting cavity. Put the cowling panel in first spacing intracavity, first connecting plate and second connecting plate fixed connection can be fixed at first spacing intracavity to the cowling panel card. The contact surface that has the gas leakage risk among the mounting structure of combustion chamber lid, cowling panel and combustor in this technique is the contact surface of first connecting plate and second connecting plate, compares with prior art, has reduced the contact surface that has the gas leakage wind to sink into, has reduced the gas leakage risk, and the contact surface that needs to seal in addition also reduces, has reduced assembly process's work load, improves production efficiency.
Description
Technical Field
The utility model relates to a water heater technical field, in particular to full premix combustion chamber and water heater.
Background
The combustion chamber is an important part for burning gas and generating heat in the gas water heater, and the prior fully premixed gas water heater can completely mix the gas and air before the gas is burnt, thereby improving the burning efficiency and the heat productivity of the gas.
The partial fully premixed combustion chamber comprises a combustion chamber cover, a rectifying plate and a combustor which are sequentially arranged from top to bottom, and the connection tightness among the three has important influence on the air tightness and the safety of the combustion chamber. The mounting structure of the existing total preheating combustion chamber is that the lower side of the periphery of a combustion chamber cover is abutted with the upper side of the periphery of a rectifying plate, and the lower side of the periphery of the rectifying plate is abutted with the upper side of the periphery of a combustor and is connected and fixed with the combustor through screws. The contact surface between two liang has the gas leakage risk, and the installation makes the area of contact that has the gas leakage risk great like this, has great gas leakage risk, generally need scribble sealed glue on two liang of looks butt's contact surface in order to reduce the gas leakage risk, and great area of contact has also increased assembly process's work load, reduction production efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a full premix combustion chamber.
The utility model discloses still provide a water heater that has above-mentioned full premix combustion chamber.
According to the utility model discloses a full premix combustor of first aspect embodiment includes:
the combustion chamber cover is provided with an air inlet at the upper side, and a first connecting plate is arranged at the periphery of the combustion chamber cover;
the burner is arranged on the lower side of the combustion chamber cover, a second connecting plate is arranged on the periphery of the burner and fixedly connected to the lower side of the first connecting plate, a first limiting cavity is arranged between the first connecting plate and the second connecting plate and is arranged on the inner sides of the first connecting plate and the second connecting plate;
the rectifying plate is arranged in the first limiting cavity, and a plurality of air passing holes are formed in the rectifying plate.
According to the utility model discloses full premix combustor has following beneficial effect at least: air and fuel gas enter the combustion chamber cover from the air inlet to be mixed, then are rectified and mixed through the air holes on the rectifying plate, and finally the mixed gas of the air and the fuel gas is combusted on the combustor; set up first connecting plate in the periphery of combustion chamber lid, set up the second connecting plate in the periphery of combustor, set up first spacing chamber between first connecting plate and the second connecting plate, put the cowling panel in first spacing intracavity, first connecting plate and second connecting plate fixed connection can be fixed at first spacing intracavity to the cowling panel card. The contact surface that has the gas leakage risk among the mounting structure of combustion chamber lid, cowling panel and combustor in this technique is the contact surface of first connecting plate and second connecting plate, compares with prior art, has reduced the contact surface that has the gas leakage wind to sink into, has reduced the gas leakage risk, and the contact surface that needs to seal in addition also reduces, has reduced assembly process's work load, improves production efficiency.
According to some embodiments of the utility model, the downside of combustion chamber lid is equipped with first spacing groove, first spacing groove is located the inboard of first connecting plate, first spacing groove is located the upside of second connecting plate, the cowling panel is located first spacing inslot, first spacing chamber includes first spacing groove.
The downside of combustion chamber lid sets up first spacing groove, and the inboard at first connecting plate is established to first spacing groove, and the outer fringe of cowling panel is placed at first spacing inslot, and after connecting the combustor, the outer fringe and the first connecting plate butt of second connecting plate are fixed, and the second connecting plate becomes first spacing chamber with first spacing groove, and second connecting plate butt is at the downside of cowling panel, realizes that the cowling panel is fixed, and the installation is simple.
According to some embodiments of the utility model, the downside of combustion chamber lid still is equipped with the second spacing groove, the second spacing groove is located the downside of first spacing groove, the second connecting plate is located the second spacing inslot. The second connecting plate is placed in the second spacing groove, can conveniently fix a position the combustor, improves the installation effectiveness.
According to the utility model discloses a some embodiments, be equipped with a plurality of first connecting holes on the first connecting plate, be equipped with a plurality of second connecting holes on the second connecting plate, it is a plurality of first connecting hole is with a plurality of the second connecting hole is just to setting up one by one, first connecting hole and corresponding the second connecting hole passes through screwed connection. The burner cover, the rectifying plate and the burner are spliced and fixed together by screws, so that the assembly is convenient.
According to some embodiments of the utility model, be close to the middle part of cowling panel the area of crossing the gas pocket is less than and keeps away from the middle part of cowling panel the area of crossing the gas pocket. Air and fuel gas enter the combustion chamber from the air inlet of the combustion chamber cover, are further mixed and dispersed through the air holes of the rectifying plate and then flow to the combustor for combustion. The gas passing hole area close to the middle part of the rectifying plate is smaller, the gas passing hole area far away from the middle part of the rectifying plate is larger, so that gas can be uniformly dispersed on the whole rectifying plate after entering the combustion chamber, the gas flowing to the combustor is more uniform, and the combustion can be more uniform and more sufficient.
According to some embodiments of the utility model, the full premix combustion chamber still includes the ignition needle, the ignition needle includes needle main part and ignition pipe, be equipped with first through-hole on the first connecting plate, be equipped with the second through-hole on the second connecting plate, the second through-hole is just right to first through-hole, needle main part vertically fixed connection in first through-hole with in the second through-hole, the ignition pipe is located the downside of needle main part, the opening of ignition pipe is just to the downside of combustor. The needle main part of ignition needle passes and fixes in first through-hole and second through-hole, and this technique installs the ignition needle on the combustion chamber, and the vertical setting of needle main part of ignition needle utilizes the direction of height's of combustion chamber space, compact structure, and the space utilization is more reasonable. The ignition tube extends to the lower side of the burner to ignite.
According to some embodiments of the utility model, the full premix combustion chamber still includes thermal-insulated cotton, thermal-insulated cotton is located the periphery of combustor, thermal-insulated cotton upside connect in the downside of second connecting plate, be equipped with the third through-hole on the thermal-insulated cotton, the needle main part is located in the third through-hole. The heat insulation cotton surrounds the periphery of the combustor, so that the heat of the combustor is reduced and is directly transferred to the side wall of an external heat exchanger, more heat enters the heat exchanger for heat exchange, and the heating efficiency is improved; and the needle main part of ignition needle also establishes in the third through hole of thermal-insulated cotton, and thermal-insulated cotton plays thermal-insulated effect to the ignition needle, can prolong the life of ignition needle.
According to some embodiments of the invention, the burner is a metal braided burner or a ceramic plate burner. The metal braided burner or the ceramic plate burner has mature processing technology and stable combustion.
According to the utility model discloses a water heater of second aspect embodiment, include according to the utility model discloses the above-mentioned first aspect embodiment's of the above-mentioned full premix combustion chamber.
According to the utility model discloses water heater has following beneficial effect at least: by adopting the fully premixed combustion chamber, the risk of gas leakage can be reduced.
According to some embodiments of the utility model, the water heater still includes the heat exchanger, the full premix combustion chamber is located the upside of heat exchanger, the periphery of first connecting plate with heat exchanger fixed connection. After the combustion chamber is assembled, the combustion chamber is installed on the heat exchanger through the first connecting plate, and installation is convenient.
The utility model is used for the water heater.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
FIG. 1 is a schematic cross-sectional view of a fully premixed combustor according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of the upper side of the fully premixed combustion chamber according to the embodiment of the present invention;
fig. 3 is a schematic perspective view of the underside of the fully premixed combustion chamber according to the embodiment of the present invention;
fig. 4 is an exploded schematic view of a fully premixed combustion chamber according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a combustion chamber cover according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a water heater according to an embodiment of the present invention.
In the drawings: 101-combustion chamber cover, 102-air inlet, 103-first connecting plate, 104-first limiting groove, 105-second limiting groove, 106-first connecting hole, 107-first through hole, 108-first cavity, 201-combustor, 202-second connecting plate, 203-second connecting hole, 204-second through hole, 205-second cavity, 301-rectifying plate, 302-air passing hole, 401-needle body, 402-ignition tube, 501-heat insulation cotton, 502-third through hole, 601-fan and 602-heat exchanger.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly defined, words such as set forth, connected, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the words in the present invention by combining the specific contents of the technical solutions.
A fully premixed combustion chamber according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 5.
The fully premixed combustor includes a combustor cap 101, a combustor 201, and a fairing 301.
The upper side of the combustion chamber cover 101 is provided with an air inlet 102, the air inlet 102 is connected with an external fan 601, and the fan 601 sends air and fuel gas into the combustion chamber cover 101; the periphery of the combustion chamber cover 101 is provided with a first connecting plate 103, and the first connecting plate 103 is transversely arranged. The middle portion of the combustion chamber cover 101 is upwardly protruded so that a first cavity 108 is formed between the inside of the combustion chamber cover 101 and the rectifying plate 301, and air and gas may flow and be mixed in the first cavity 108.
The burner 201 is arranged at the lower side of the combustion chamber cover 101, a second connecting plate 202 is arranged at the periphery of the burner 201, the second connecting plate 202 is transversely arranged, the second connecting plate 202 is fixedly connected to the lower side of the first connecting plate 103, and the lower side of the first connecting plate 103 is abutted to the upper side of the second connecting plate 202; a first limiting cavity is arranged between the first connecting plate 103 and the second connecting plate 202, and is arranged on the inner sides of the first connecting plate 103 and the second connecting plate 202. The middle of the burner 201 is protruded downward so that a second cavity 205 is formed between the current plate 301 and the burner 201, and the air and the gas may flow in the second cavity 205 to be further dispersedly mixed. The mixed gas of air and gas is burned in the burner 201 to generate heat.
The fairing 301 is arranged in the first limiting cavity, a plurality of air passing holes 302 are formed in the fairing 301, and air and fuel gas are dispersed, rectified and mixed through the air passing holes 302 in the fairing 301.
Set up first connecting plate 103 in the periphery of combustion chamber lid 101, set up second connecting plate 202 in the periphery of combustor 201, set up first spacing chamber between first connecting plate 103 and the second connecting plate 202, put cowling panel 301 in first spacing intracavity, because the shape of cowling panel 301 and the shape looks adaptation in first spacing chamber, to first connecting plate 103 and second connecting plate 202 fixed connection, can block cowling panel 301 at first spacing intracavity fixedly. In the mounting structure of the combustion chamber cover 101, the rectifying plate 301 and the burner 201 in the technology, the contact surface with the risk of air leakage is the contact surface of the first connecting plate 103 and the second connecting plate 202, compared with the prior art, because the contact surface of the rectifying plate 301, the combustion chamber cover 101 and the burner 201 in the technology is positioned at the inner side of the contact surface of the first connecting plate 103 and the second connecting plate 202, the risk of air leakage of the rectifying plate 301, the combustion chamber cover 101 and the burner 201 does not need to be considered; because the contact surface with air leakage and air depression is reduced, the air leakage risk is reduced, the contact surface needing sealing is also reduced, the workload of the assembly process is reduced, and the production efficiency is improved.
In some embodiments of the present invention, the lower side of the combustion chamber cover 101 is provided with a first limiting groove 104, the first limiting groove 104 is disposed on the inner side of the first connecting plate 103, the first limiting groove 104 is disposed on the upper side of the second connecting plate 202, the rectifying plate 301 is disposed in the first limiting groove 104, and the first limiting cavity comprises the first limiting groove 104. Specifically, the first limiting groove 104 is formed by disposing an upwardly recessed first annular step on the inner side of the first connecting plate 103, the height of the first annular step is substantially the same as the thickness of the rectifying plate 301, and the outer edge of the rectifying plate 301 is placed on the first annular step.
The lower side of the combustion chamber cover 101 is provided with a first limiting groove 104, the first limiting groove 104 is arranged on the inner side of the first connecting plate 103, the outer edge of the rectifying plate 301 is placed in the first limiting groove 104, after the burner 201 is connected, the outer edge of the second connecting plate 202 is abutted against and fixed with the first connecting plate 103, the second connecting plate 202 and the first limiting groove 104 form a first limiting cavity, the second connecting plate 202 is abutted against the lower side of the rectifying plate 301, the rectifying plate 301 is fixed, and the installation is simple.
Further, a second limit groove 105 is further disposed on the lower side of the combustion chamber cover 101, the second limit groove 105 is disposed on the lower side of the first limit groove 104, and the second connecting plate 202 is disposed in the second limit groove 105. Specifically, the second limiting groove 105 is formed by disposing an upwardly recessed second annular step on the inner side of the first connecting plate 103, and then disposing an upwardly recessed first annular step on the inner side of the second annular step, and the second connecting plate 202 can be pressed against the rectifying plate 301 after being placed on the second annular step. The first limit groove 104 and the second limit groove 105 are processed on the combustion chamber cover 101 together, and the processing is convenient. The second connecting plate 202 is placed in the second limiting groove 105, so that the combustor 201 can be conveniently positioned, and the installation efficiency is improved.
In some embodiments, the first limiting groove 104 may also be disposed inside the second connecting plate 202; or the first connecting plate 103 and the second connecting plate 202 are provided with the first limiting groove 104 at the same time, the first limiting cavity can be formed.
In some embodiments of the present invention, a plurality of first connection holes 106 are disposed on the first connection plate 103, a plurality of second connection holes 203 are disposed on the second connection plate 202, the plurality of first connection holes 106 and the plurality of second connection holes 203 are disposed in a one-to-one manner, and the first connection holes 106 and the corresponding second connection holes 203 are connected by screws. The combustion chamber cover 101, the rectifying plate 301 and the combustor 201 are spliced and fixed together by screws, so that the assembly is convenient. Nuts may be fixed to the first connection plate 103 or the second connection plate 202 so that they can be fixed by screwing.
In some embodiments of the present invention, the area of the air passing hole 302 near the middle of the rectifying plate 301 is smaller than the area of the air passing hole 302 far from the middle of the rectifying plate 301. Air and gas enter the combustion chamber from the air inlet 102 of the combustion chamber cover 101, are further mixed and dispersed through the air passing holes 302 of the rectifying plate 301, and then flow to the combustor 201 for combustion. The area of the air passing hole 302 close to the middle part of the rectifying plate 301 is smaller, the area of the air passing hole 302 far away from the middle part of the rectifying plate 301 is larger, so that gas can be dispersed more uniformly on the whole rectifying plate 301 after entering a combustion chamber, the gas flowing to the combustor 201 is more uniform, and the combustion can be more uniform and more sufficient.
In some embodiments of the present invention, the full premix combustor further includes an ignition needle, the ignition needle includes a needle main body 401 and an ignition tube 402, the first connecting plate 103 is provided with a first through hole 107, the second connecting plate 202 is provided with a second through hole 204, the second through hole 204 is just opposite to the first through hole 107, the needle main body 401 is vertically and fixedly connected in the first through hole 107 and the second through hole 204, the ignition tube 402 is provided at the lower side of the needle main body 401, and the opening of the ignition tube 402 is just opposite to the lower side of the burner 201. The needle main part 401 of ignition needle passes and fixes in first through-hole 107 and second through-hole 204, and this technique is installed the ignition needle on the combustion chamber, and the vertical setting of needle main part 401 of ignition needle utilizes the direction of height's of combustion chamber space, compact structure, and the space utilization is more reasonable, is different from the ignition needle in the past and installs on heat exchanger 602. The ignition tube 402 extends to the lower side of the burner 201 to ignite.
In some embodiments of the utility model, the full premix combustor still includes thermal-insulated cotton 501, and the periphery of combustor 201 is located to thermal-insulated cotton 501, and the downside in second connecting plate 202 is connected to thermal-insulated cotton 501's upside, is equipped with third through hole 502 on the thermal-insulated cotton 501, and needle main part 401 is located in third through hole 502. The heat insulation cotton 501 is annular, the heat insulation cotton 501 surrounds the periphery of the combustor 201, heat of the combustor 201 is reduced and directly transferred to the side wall of an external heat exchanger, more heat enters the heat exchanger for heat exchange, and heating efficiency is improved; in addition, the needle body 401 of the ignition needle is also arranged in the third through hole 502 of the heat insulation cotton 501, and the heat insulation cotton 501 plays a heat insulation role on the ignition needle, so that the service life of the ignition needle can be prolonged.
In some embodiments of the present invention, the burner 201 is a metal braided burner or a ceramic plate burner. The metal braided burner and the ceramic plate burner are mature in processing technology and stable in combustion.
Referring to fig. 6, a water heater according to an embodiment of the second aspect of the present invention includes a fully premixed combustion chamber according to the embodiment of the first aspect of the present invention. A fan 601 is arranged in the water heater, and an air outlet of the fan 601 is connected with an air inlet 102 on the combustion chamber cover 101.
According to the utility model discloses water heater through adopting foretell full premix combustion chamber, can reduce the risk that the gas leaked, improves the packaging efficiency of water heater.
In some embodiments of the present invention, the water heater further comprises a heat exchanger 602, the fully premixed combustion chamber is disposed on the upper side of the heat exchanger 602, and the periphery of the first connecting plate 103 is fixedly connected to the heat exchanger 602. An attachment position is left on the outer periphery of the first connection plate 103, and an attachment surface corresponding to the attachment position is provided on the heat exchanger 602, and the first connection plate 103 is attached to the heat exchanger 602 through the attachment position. After the combustion chamber is assembled, the combustion chamber is mounted on the heat exchanger 602 through the first connecting plate 103, so that the mounting is convenient.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various equivalent modifications or substitutions can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. A fully premixed combustor, comprising:
the combustion chamber cover is provided with an air inlet at the upper side, and a first connecting plate is arranged at the periphery of the combustion chamber cover;
the burner is arranged on the lower side of the combustion chamber cover, a second connecting plate is arranged on the periphery of the burner and fixedly connected to the lower side of the first connecting plate, a first limiting cavity is arranged between the first connecting plate and the second connecting plate and is arranged on the inner sides of the first connecting plate and the second connecting plate;
the rectifying plate is arranged in the first limiting cavity, and a plurality of air passing holes are formed in the rectifying plate.
2. The full premix combustor as claimed in claim 1, wherein a first limiting groove is formed on a lower side of the combustion chamber cover, the first limiting groove is formed on an inner side of the first connecting plate, the first limiting groove is formed on an upper side of the second connecting plate, the rectifying plate is formed in the first limiting groove, and the first limiting cavity comprises the first limiting groove.
3. The fully premixed combustor according to claim 2, wherein the lower side of the combustor cap is further provided with a second limiting groove, the second limiting groove is disposed on the lower side of the first limiting groove, and the second connecting plate is disposed in the second limiting groove.
4. The fully premixed combustor according to claim 1, wherein a plurality of first connection holes are formed in the first connection plate, a plurality of second connection holes are formed in the second connection plate, the plurality of first connection holes and the plurality of second connection holes are arranged in a one-to-one opposite manner, and the first connection holes are connected with the corresponding second connection holes through screws.
5. The fully premixed combustion chamber of claim 1, wherein an area of the air passing holes near the middle of the rectification plate is smaller than an area of the air passing holes far from the middle of the rectification plate.
6. The full premix combustor as claimed in claim 1, further comprising an ignition needle, wherein the ignition needle comprises a needle body and an ignition tube, the first connecting plate is provided with a first through hole, the second connecting plate is provided with a second through hole, the second through hole is opposite to the first through hole, the needle body is vertically and fixedly connected in the first through hole and the second through hole, the ignition tube is provided at a lower side of the needle body, and an opening of the ignition tube is opposite to a lower side of the burner.
7. The full premix combustor of claim 6, further comprising heat insulation cotton, wherein the heat insulation cotton is disposed on the periphery of the combustor, the upper side of the heat insulation cotton is connected to the lower side of the second connecting plate, a third through hole is formed in the heat insulation cotton, and the needle body is disposed in the third through hole.
8. The fully premixed combustor of claim 1, wherein said burner is a metal braid burner or a ceramic plate burner.
9. A water heater comprising a fully premixed combustion chamber according to any one of claims 1 to 8.
10. The water heater of claim 9, further comprising a heat exchanger, wherein the fully premixed combustion chamber is disposed at an upper side of the heat exchanger, and an outer circumference of the first connection plate is fixedly connected to the heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021521889.5U CN212929990U (en) | 2020-07-28 | 2020-07-28 | Full premix combustion chamber and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021521889.5U CN212929990U (en) | 2020-07-28 | 2020-07-28 | Full premix combustion chamber and water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212929990U true CN212929990U (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021521889.5U Active CN212929990U (en) | 2020-07-28 | 2020-07-28 | Full premix combustion chamber and water heater |
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| Country | Link |
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| CN (1) | CN212929990U (en) |
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