CN111076169A - Honeycomb body, preparation method and infrared burner - Google Patents
Honeycomb body, preparation method and infrared burner Download PDFInfo
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- CN111076169A CN111076169A CN201911378257.XA CN201911378257A CN111076169A CN 111076169 A CN111076169 A CN 111076169A CN 201911378257 A CN201911378257 A CN 201911378257A CN 111076169 A CN111076169 A CN 111076169A
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- 238000002360 preparation method Methods 0.000 title description 7
- 239000007769 metal material Substances 0.000 claims description 45
- 239000002184 metal Substances 0.000 claims description 44
- 238000005187 foaming Methods 0.000 claims description 34
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 239000006260 foam Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 239000004088 foaming agent Substances 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005338 heat storage Methods 0.000 claims description 3
- 239000012466 permeate Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 12
- 238000005496 tempering Methods 0.000 abstract description 4
- 229910052755 nonmetal Inorganic materials 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 206010016754 Flashback Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/14—Radiant burners using screens or perforated plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
- B22F3/1125—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers involving a foaming process
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/08—Arrangement or mounting of burners
- F24C3/085—Arrangement or mounting of burners on ranges
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Gas Burners (AREA)
Abstract
The invention discloses a honeycomb body, which comprises an upper honeycomb body and a lower honeycomb body which are connected with each other, wherein the upper honeycomb body is provided with a plurality of air holes, the lower honeycomb body is provided with a plurality of air inlets for gas to pass through, and the density of the air inlets is greater than that of the air holes. According to the honeycomb body, the density of the air inlet holes of the lower honeycomb body is designed to be larger than that of the air holes of the upper honeycomb body, so that the air holes and the air inlet holes are prevented from forming a straight hole structure, the lower honeycomb body can prevent external radiant heat from directly entering the interior of a furnace end, the temperature rise of the furnace end and the interior of a stove is effectively reduced, and the durability and reliability of a product are improved; meanwhile, combustion flame can be more difficult to spread to the lower end face of the honeycomb body, the tempering risk is reduced, and the combustion stability is improved.
Description
Technical Field
The invention relates to the technical field of combustors, in particular to a honeycomb body for an infrared combustor.
Background
At present, metal honeycomb bodies of metal infrared gas stoves in the market are all in straight hole structures, and during combustion, partial radiant heat directly radiates to the inside of a stove head, so that the temperature of the inside of the stove head and the temperature of the inside of a stove are very high, and the service life of the infrared gas stoves is influenced. In addition, the mixed gas can not be fully preheated in the furnace end, the heat efficiency of the burner is not high, and the energy is wasted.
Disclosure of Invention
The invention aims to solve one of the problems in the prior art at least to a certain extent, and therefore the invention provides the honeycomb body which is simple in structure, and the porosity of the lower honeycomb body is designed to be higher than that of the upper honeycomb body, so that the lower honeycomb body can effectively prevent external radiant heat from entering the interior of a furnace end, the temperature rise of the furnace end and the interior of a stove is reduced, and the service life of a product is prolonged; meanwhile, the purposes of preheating mixed gas, improving the heat efficiency and reducing the tempering risk can be achieved.
The invention provides a preparation method of a honeycomb body. The invention also provides an infrared burner with the honeycomb body or a preparation method applying the honeycomb body.
According to the above-mentioned honeycomb body, it realizes through the following technical scheme:
the honeycomb body comprises an upper honeycomb body and a lower honeycomb body which are connected with each other, wherein the upper honeycomb body is provided with a plurality of air holes, the lower honeycomb body is provided with a plurality of air inlet holes for gas to pass through, and the density of the air inlet holes is greater than that of the air holes.
Further, the lower honeycomb body is a porous heat storage layer, and the lower honeycomb body and the upper honeycomb body are fixedly connected together.
Further, the lower honeycomb body is made of a non-metallic material foam or a metallic material foam.
Further, the upper honeycomb body is made of a metal material.
According to the preparation method of the honeycomb body, the preparation method is realized by the following technical scheme:
a method of making a honeycomb body using a honeycomb body as described above, the method comprising:
s1: the upper honeycomb body is made of metal materials;
s2: foaming a non-metallic material and placing the prepared upper honeycomb body on top of the foaming non-metallic material;
s3: foaming and permeating the non-metallic material into the pores of the honeycomb body;
s4: foaming the non-metallic material to form a shaped lower honeycomb body to obtain a prefabricated honeycomb body;
s5: and sintering the prefabricated honeycomb body at high temperature to form the composite material honeycomb body.
In other embodiments, the method of making comprises:
s1': the upper honeycomb body is made of metal materials;
s2': foaming the molten metal;
s3': after the foaming of the molten metal is finished, vertically inserting the lower end of the prepared upper honeycomb body into the finished foaming molten metal;
s4': and cooling the molten metal to form the metal material honeycomb body.
Further, in step S2', the foaming the molten metal includes: firstly, metal powder and foaming agent are mixed uniformly, and then the mixture is heated to be above the melting point of the metal powder, so that the molten metal is foamed.
Further, in step S2', the foaming the molten metal includes: firstly, the metal powder is heated to a temperature higher than the melting point, and then the foaming agent is added into the molten metal to foam the molten metal.
According to the infrared burner provided by the above, the following technical scheme is adopted to realize the following:
an infrared burner having a honeycomb body as described above or a method for producing a honeycomb body as described above.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. according to the honeycomb body, the density of the air inlet holes of the lower honeycomb body is designed to be larger than that of the air holes of the upper honeycomb body, so that the air holes and the air inlet holes are prevented from forming a straight hole structure, the lower honeycomb body can prevent external radiant heat from directly entering the interior of a furnace end, the temperature rise of the furnace end and the interior of a stove is effectively reduced, and the durability and reliability of a product are improved;
2. the honeycomb body of the invention can make the combustion flame more difficult to spread to the lower end surface of the honeycomb body, reduce the tempering risk and improve the combustion stability.
Drawings
Fig. 1 is a schematic structural view of a honeycomb body in embodiment 1 of the present invention;
FIG. 2 is a flow chart of a method for preparing a honeycomb body according to example 1 of the present invention;
fig. 3 is a flow chart of a method of making a honeycomb body in example 2 of the present invention.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
Example 1
As shown in fig. 1, in the honeycomb body of the present embodiment, the honeycomb body 1 includes an upper honeycomb body 11 and a lower honeycomb body 12 connected to each other, a central through hole 101 penetrating the upper honeycomb body 11 and the lower honeycomb body 12 is formed at the center of the honeycomb body 1, the upper honeycomb body 11 has a plurality of air holes 111, the lower honeycomb body 12 has a plurality of air inlet holes 121 through which gas passes, the density of the air inlet holes 121 is greater than that of the air holes 111, and the gas is transmitted from the air inlet holes 121 to the air holes 111 and is combusted on the upper surface of the upper honeycomb body 11.
According to the honeycomb body, the upper honeycomb body 11 and the lower honeycomb body 12 are fixedly connected together, so that the honeycomb body is convenient to machine and form, the density of the air inlet holes 121 of the lower honeycomb body 12 is designed to be larger than that of the air holes 111 of the upper honeycomb body 11, and the air holes 111 positioned above and the air inlet holes 121 positioned below are prevented from forming a straight hole structure, so that the lower honeycomb body 12 can prevent external radiant heat from directly entering the interior of a furnace end, the temperature rise of the furnace end and the interior of a stove is effectively reduced, and the durability and reliability of a product are improved; in addition, the combustion flame can be made more difficult to propagate to the lower end face of the honeycomb body 1, the risk of flashback is reduced, and the combustion stability is improved.
Preferably, the lower honeycomb body 12 is a porous heat storage layer, so that the lower honeycomb body 12 can absorb radiant heat radiated toward the inside of the furnace head, and preheat the mixed gas flowing through the gas inlet holes 121, so that the preheated mixed gas forms super-enthalpy combustion on the upper honeycomb body 11, thereby improving the heat efficiency and avoiding energy waste. The lower honeycomb body 12 and the upper honeycomb body 11 are fixedly connected together, so that the lower honeycomb body 12 and the upper honeycomb body 11 can be conveniently processed and formed, meanwhile, the lower honeycomb body 12 can be used for absorbing radiant heat radiated towards the interior of a furnace end, the temperature rise of the interior of the furnace end and a stove is reduced, the absorbed radiant heat is fully utilized to preheat mixed gas, and the heat efficiency is improved; in addition, the upper honeycomb body 11 is ensured to have larger porosity, which is beneficial to the high-efficiency combustion of gas and the emission of combustion tail gas.
Preferably, the lower honeycomb body 12 is made of a non-metal material foam or a metal material foam so that the lower honeycomb body 12 can effectively block radiant heat from the outside from entering the inside of the burner head and store the absorbed radiant heat for preheating the mixed gas flowing through the gas inlet holes 121, thereby making the thermal efficiency of the infrared burner higher. More preferably, the lower honeycomb body 12 is a foamed ceramic or a foamed metal. In the present embodiment, the lower honeycomb body 12 is a foamed ceramic made of a ceramic material.
Preferably, upper honeycomb body 11 is made of a metal material to prevent upper honeycomb body 11, i.e., honeycomb body 1, from cracking during long-term use, which is advantageous in further improving the durability and reliability of the product. The upper honeycomb body 11 of the present embodiment may be formed by winding a strip-shaped metal material or made of several metal tubes arranged adjacent to each other.
As shown in fig. 2, further, the method for preparing a honeycomb body of the present embodiment includes the steps of:
s1: the upper honeycomb body 11 is made of a metal material;
specifically, the upper honeycomb body 11 is formed by winding a strip-shaped metal material, or a plurality of metal tubes are gathered and bundled to form the upper honeycomb body 11 for standby.
S2: foaming a non-metallic material and placing the prepared upper honeycomb 11 on top of the foaming non-metallic material;
specifically, the lower honeycomb body 12 is prepared by combining a non-metallic material (e.g., a ceramic material) with a foaming agent, and the upper honeycomb body 11 prepared in advance is placed on top of the non-metallic material being foamed while the non-metallic material (e.g., a ceramic material) is being foamed, so that a part of the non-metallic material penetrates into the pores 111 of the upper honeycomb body 11 during the foaming process.
S3: the non-metallic material foams and permeates into the pores 111 of the honeycomb body 11;
specifically, in the foaming process of the non-metal material, part of the non-metal material penetrates into the air holes 111 of the upper honeycomb body 11, so that the upper honeycomb body 11 and the foaming non-metal material are fixedly connected together, thus the fixed connection procedure between the upper honeycomb body 11 and the lower honeycomb body 12 can be omitted, and the production and manufacturing efficiency can be improved.
S4: foaming of the non-metallic material is completed and a shaped lower honeycomb body 12 is formed to obtain a prefabricated honeycomb body;
s5: and sintering the prefabricated honeycomb body at high temperature to form the composite material honeycomb body.
Specifically, the prefabricated honeycomb body is placed into a high-temperature furnace for high-temperature sintering, and after the high-temperature sintering is completed, the lower honeycomb body 12 and the upper honeycomb body 11 are fixedly connected together, so that the composite material honeycomb body is formed.
It can be seen that, in the preparation method of the honeycomb body according to the embodiment, the upper honeycomb body 11 is placed on the top of the foaming non-metal material, so that part of the non-metal material permeates into the upper honeycomb body 11 while foaming, and the lower honeycomb body 12 and the upper honeycomb body 11 are stably and reliably fixedly connected together after high-temperature sintering, so that the foaming characteristic of the non-metal material is fully utilized, the connection firmness of the lower honeycomb body 12 and the upper honeycomb body 11 is improved, the fixed connection procedure between the upper honeycomb body 11 and the lower honeycomb body 12 is omitted, the production and manufacturing efficiency is improved, and the manufacturing cost is reduced. In addition, the non-metallic material foaming process can make the lower honeycomb body 12 form a plurality of irregular pores forming the air inlet holes 121, thereby avoiding the air inlet holes 121 and the air holes 111 from forming a straight pore structure, enabling the lower honeycomb body 12 to effectively block the radiation heat from the outside from entering the interior of the furnace end, and storing the absorbed radiation heat for preheating the mixed gas flowing through the air inlet holes 121, thereby enabling the thermal efficiency of the infrared burner to be higher.
Example 2
As shown in fig. 3, this example is different from example 1 in the material for preparing the lower honeycomb body 12 and the method for preparing the corresponding honeycomb body 1. Specifically, the lower honeycomb body 12 is a foamed metal, and is made of a metal material by foaming. The method for producing honeycomb body 1 includes:
s1': the upper honeycomb body 11 is made of a metal material;
s2': foaming the molten metal;
s3': after the foaming of the molten metal is finished, vertically inserting the lower end of the prepared upper honeycomb body 11 into the finished foaming molten metal;
s4': and cooling the molten metal to form the metal material honeycomb body.
It can be seen that, in the method for preparing the honeycomb body 1 of the embodiment, the lower end of the upper honeycomb body 11 is inserted into the foaming molten metal, and after the molten metal is cooled, the lower end of the lower honeycomb body 12 and the lower end of the upper honeycomb body 11 are automatically and stably and reliably fixedly connected together, so that the fixed connection procedure between the upper honeycomb body 11 and the lower honeycomb body 12 is omitted, the production and manufacturing efficiency is improved, and the manufacturing cost is reduced; in addition, the lower honeycomb body 12 is made of metal material in a foaming mode, so that cracking of the lower end of the honeycomb body 1 in a long-term use process can be avoided, and the durability and reliability of a product can be further improved.
Preferably, in step S2', the foaming the molten metal includes: firstly, metal powder and foaming agent are mixed uniformly, and then the mixture is heated to be above the melting point of the metal powder, so that the molten metal is foamed. Or heating the metal powder to a temperature higher than the melting point, and adding a foaming agent into the molten metal to foam the molten metal. Therefore, through chemical reaction and gas generation in the heating process, the metal melt forms a plurality of irregular pores forming the gas inlet holes 121, the gas inlet holes 121 and the gas holes 111 are prevented from forming a straight hole structure, the lower honeycomb body 12 can effectively prevent external radiant heat from entering the interior of the furnace end, the absorbed radiant heat is stored and used for preheating mixed gas flowing through the gas inlet holes 121, and the thermal efficiency of the infrared burner is higher.
Example 3
In the infrared burner of this embodiment, the honeycomb body as described in embodiment 1, or the method for manufacturing the honeycomb body as described in embodiment 2, the density of the air inlet holes at the lower end of the honeycomb body is large and the arrangement is irregular, so that on the first hand, the radiant heat from the outside can be effectively blocked from entering the interior of the burner head, the temperature rise of the burner head and the interior of the stove can be reduced, and the durability and reliability of the product can be improved; the second aspect can make the combustion flame more difficult to spread to the lower end face of the honeycomb body, reduce the tempering risk and improve the combustion stability; the third aspect absorbs the radiant heat and serves to preheat the mixture gas flowing through the inlet port, thereby making the infrared burner more thermally efficient.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (9)
1. A honeycomb body, characterized by comprising an upper honeycomb body (11) and a lower honeycomb body (12) connected to each other, the upper honeycomb body (11) having a plurality of gas holes (111), the lower honeycomb body (12) having a plurality of gas inlet holes (121) through which a gas passes, the density of the gas inlet holes (121) being greater than the density of the gas holes (111).
2. A honeycomb body according to claim 1, characterized in that the lower honeycomb body (12) is a porous heat storage layer and the lower honeycomb body (12) is fixedly connected to the upper honeycomb body (11).
3. A honeycomb body according to claim 1 or 2, characterized in that the lower honeycomb body (12) is made of a foamed non-metallic material or a foamed metallic material.
4. A honeycomb body according to claim 1, characterised in that the upper honeycomb body (11) is made of a metallic material.
5. A method of making a honeycomb body using any one of claims 1-4, the method comprising:
s1: the upper honeycomb body (11) is made of metal material;
s2: foaming a non-metallic material and placing the prepared upper honeycomb body (11) on top of the foaming non-metallic material;
s3: the non-metallic material foams and permeates into the pores (111) of the honeycomb body (11);
s4: foaming the non-metallic material to complete and form a shaped lower honeycomb body (12) to obtain a prefabricated honeycomb body;
s5: and sintering the prefabricated honeycomb body at high temperature to form the composite material honeycomb body.
6. A method of making a honeycomb body using any one of claims 1-4, the method comprising:
s1': the upper honeycomb body (11) is made of metal material;
s2': foaming the molten metal;
s3': after the foaming of the molten metal is finished, vertically inserting the lower end of the prepared upper honeycomb body (11) into the finished foaming molten metal;
s4': and cooling the molten metal to form the metal material honeycomb body.
7. The method according to claim 6, wherein in step S2', the foaming the molten metal comprises: firstly, metal powder and foaming agent are mixed uniformly, and then the mixture is heated to be above the melting point of the metal powder, so that the molten metal is foamed.
8. The method according to claim 6, wherein in step S2', the foaming the molten metal comprises: firstly, the metal powder is heated to a temperature higher than the melting point, and then the foaming agent is added into the molten metal to foam the molten metal.
9. An infrared burner, characterized in that a honeycomb body according to any one of claims 1 to 4 is provided or the production method according to any one of claims 5 to 8 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911378257.XA CN111076169A (en) | 2019-12-27 | 2019-12-27 | Honeycomb body, preparation method and infrared burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911378257.XA CN111076169A (en) | 2019-12-27 | 2019-12-27 | Honeycomb body, preparation method and infrared burner |
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| Publication Number | Publication Date |
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| CN111076169A true CN111076169A (en) | 2020-04-28 |
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| CN201911378257.XA Pending CN111076169A (en) | 2019-12-27 | 2019-12-27 | Honeycomb body, preparation method and infrared burner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390079A (en) * | 2021-05-24 | 2021-09-14 | 华帝股份有限公司 | Infrared burner and infrared gas stove |
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2019
- 2019-12-27 CN CN201911378257.XA patent/CN111076169A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390079A (en) * | 2021-05-24 | 2021-09-14 | 华帝股份有限公司 | Infrared burner and infrared gas stove |
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