CN114061142A - Double-fan combustion system and water heater - Google Patents
Double-fan combustion system and water heater Download PDFInfo
- Publication number
- CN114061142A CN114061142A CN202111248167.6A CN202111248167A CN114061142A CN 114061142 A CN114061142 A CN 114061142A CN 202111248167 A CN202111248167 A CN 202111248167A CN 114061142 A CN114061142 A CN 114061142A
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- fan
- cavity
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- pressure
- chamber
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 6
- 238000009423 ventilation Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
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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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
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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
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
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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
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention discloses a double-fan combustion system and a water heater, which are characterized by comprising a combustion chamber, a first fan, a second fan, a secondary air baffle, a burner and a control device, wherein the combustion chamber is provided with a first cavity and a second cavity, the secondary air baffle and the burner are arranged in the first cavity, the first fan is correspondingly connected with the first cavity, the second fan is correspondingly connected with the second cavity, the rotating speeds of the first fan and the second fan are controlled by the control device, when the whole machine is combusted, the load of the whole machine is changed or the whole machine is interfered by external wind pressure, the pressure of the cavity of the combustion chamber is changed, the first fan and the second fan are adjusted in speed according to respective change curves, and the secondary air coefficient is ensured to meet the combustion requirement. The invention has simple structure, convenient operation and stable performance.
Description
Technical Field
The invention relates to the technical field of gas water heaters, in particular to a combustion system of a gas water heater.
Background
The existing gas water heater is divided into an upper pumping type gas water heater and a lower drum type gas water heater, the lower drum type gas water heater adopts positive pressure type combustion, is greatly influenced by external wind pressure, is sensitive to 1/2 times of air proportioning, and is easy to cause combustion resonance. For example, the invention discloses a double-fan gas water heater with the name of 212585188, relates to the technical field of water heaters, and aims to solve the problems that the air flow speed is increased and the gas combustion is insufficient due to the fact that the air flow is increased and the external air pressure is resisted by increasing the rotating speed of a fan in the prior art. The water heater comprises a shell, wherein an air outlet is formed in the shell; the combustor is arranged in the shell; the first fan is arranged between the smoke outlet and the air outlet of the combustor and used for exhausting the smoke in the combustor out of the shell through the air outlet; the second fan is arranged at the air outlet and used for exhausting the air in the shell to the outside of the shell through the air outlet. The disadvantages are that the performance of the whole machine is unstable and the structure needs to be improved.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides the double-fan combustion system which is simple in structure, stable in combustion, strong in wind resistance and safer.
Another object of the present invention is to provide a water heater with stable combustion and stronger wind resistance.
The invention adopts the following technical scheme to realize the purpose: a double-fan combustion system is characterized by comprising a combustion chamber, a first fan, a second fan, a secondary air baffle, a combustor and a control device, wherein the combustion chamber is provided with a first cavity and a second cavity, the secondary air baffle and the combustor are arranged in the first cavity, the first fan is correspondingly connected with the first cavity, the second fan is correspondingly connected with the second cavity, the rotating speeds of the first fan and the second fan are controlled by the control device, when the whole machine is combusted, the load of the whole machine is changed or the whole machine is interfered by external wind pressure, the cavity pressure of the combustion chamber is changed, the first fan and the second fan are adjusted in speed according to respective change curves, and the secondary air coefficient is ensured to meet the combustion requirement.
As a further explanation of the scheme, the secondary air baffle divides a cavity into an upper cavity and a lower cavity, and a plurality of first air holes are formed in the secondary air baffle.
Furthermore, an inclined plate is arranged on one side of the lower cavity, two ends of the inclined plate are respectively connected between the secondary air baffle and a bottom plate of the lower cavity, and the bottom plate is provided with a vent corresponding to the first fan.
Furthermore, a top plate is arranged at the top of the second cavity, a plurality of second air holes are formed in the top plate, and the second cavity is communicated with the upper cavity through the second air holes.
Furthermore, a partition plate is arranged between the first cavity and the second cavity, and a gas pipe fitting connected with a fire grate of the combustor is arranged in the second cavity; and the side parts of the first cavity and the second cavity are provided with positioning plates, a plurality of clamping grooves are formed in the positioning plates, and two sides of the fire grate of the burner are respectively clamped on the clamping grooves.
Furthermore, one end of the gas pipe fitting penetrates through the bottom of the second cavity and is provided with a joint externally connected with a gas pipeline.
Furthermore, the rotating speed parameters of the first fan and the second fan are preset according to the combustion working condition of the whole machine, wherein the combustion working condition of the whole machine comprises the load size of the whole machine, the external wind pressure size, the length of a smoke pipe, the altitude and the ambient temperature; the specific service environment of the system in the use process of a user feeds back the pressure of the combustion chamber to the control device, the rotating speeds of the first fan and the second fan are automatically matched, the air coefficients are controlled for 1/2 times respectively, and the combustion stability is guaranteed.
A water heater is characterized in that the double-fan combustion system is adopted, rotating speed parameters of a first fan and a second fan are preset according to the combustion working condition of the whole water heater, the pressure of a combustion chamber cavity is fed back to a control device according to the specific use environment of the system in the use process of a user, the rotating speeds of the first fan and the second fan are automatically matched, 1/2 times of air coefficients are controlled respectively, and the combustion stability is guaranteed.
The invention adopts the technical scheme to achieve the beneficial effects.
The combustion chamber adopted by the invention is divided into two independent cavities, and the air is independently supplied by a first fan and a second fan respectively to control the air coefficient for 1/2 times; in the initial stage of product design, two fan rotating speed parameters are adjusted according to the combustion working conditions of the whole machine (the load of the whole machine, the external wind pressure, the length of a smoke pipe, the altitude and the ambient temperature); when a user uses the system, the specific use environment of the system feeds back the pressure of the combustion chamber to the control device, the rotating speeds of the first fan and the second fan are automatically matched, and the air coefficients are respectively controlled for 1/2 times, so that the combustion stability is ensured; when the external wind is too large, the double fans have higher wind resistance; the primary and secondary air can be accurately regulated, and the combustion stability is ensured; accurately adjusting the primary and secondary air coefficients to avoid a combustion resonance region; the wind resistance is stronger and the safety is higher.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic view of the internal structure of the present invention.
Fig. 4 is a schematic view of the internal structure of the present invention.
Description of reference numerals: 1. the device comprises a combustion chamber 1-1, a cavity I1-11, an upper cavity 1-12, a lower cavity 1-2, a cavity II 1-3, an inclined plate 2, a fan I3, a fan II 4, a secondary air baffle 4-1, an air vent I5, a combustor 5-1, a fire grate 6, a gas pipe fitting 6-1, a connector 7, a positioning plate 7-1, a clamping groove 8 and a control device.
Detailed Description
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the present invention, unless otherwise specified and limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.
The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary and are intended to be illustrative of the invention, but are not to be construed as limiting the invention.
As shown in fig. 1-4, the invention is a dual-fan combustion system, which comprises a combustion chamber 1, a fan I2, a fan II 3, a secondary air baffle 4, a combustor 5 and a control device 8, wherein the combustion chamber is provided with a cavity I1-1 and a cavity II 1-2, in the embodiment, a partition plate is arranged between the cavity I and the cavity II, a gas pipe fitting 6 connected with a fire grate 5-1 of the combustor is arranged in the cavity II, and a plurality of fire grates are arranged side by side; the side parts of the first cavity and the second cavity are respectively provided with a positioning plate 7, the positioning plates are provided with a plurality of clamping grooves 7-1, and two sides of a fire grate of the burner are respectively clamped on the clamping grooves. The secondary air baffle and the combustor are arranged in the first cavity, the first fan 2 is correspondingly connected with the first cavity 1-1, the second fan 3 is correspondingly connected with the second cavity 1-2, the rotating speeds of the first fan and the second fan are controlled by the control device, when the whole machine is combusted, the load of the whole machine is changed or the whole machine is interfered by external wind pressure, the cavity pressure of the combustion chamber is changed, the speed of the first fan and the second fan is adjusted according to respective change curves, and the secondary air coefficient is guaranteed to meet the combustion requirement.
The secondary air baffle divides the cavity into an upper cavity 1-11 and a lower cavity 1-12, and a plurality of air holes I4-1 are arranged on the secondary air baffle. One side of the lower cavity is provided with inclined plates 1-3, two ends of each inclined plate are respectively connected between the secondary air baffle and a bottom plate of the lower cavity, and the bottom plate is provided with a vent corresponding to the first fan. The top of the second cavity is provided with a top plate, the top plate is provided with a plurality of second air holes, and the second cavity is communicated with the upper cavity through the second air holes. One end of the gas pipe fitting 6 penetrates through the bottom of the cavity II and is provided with a joint 6-1 externally connected with a gas pipeline.
Furthermore, the rotating speed parameters of the first fan and the second fan are preset according to the combustion working condition of the whole machine, wherein the combustion working condition of the whole machine comprises the load size of the whole machine, the external wind pressure size, the length of a smoke pipe, the altitude and the ambient temperature; the specific service environment of the system in the use process of a user feeds back the pressure of the combustion chamber to the control device, the rotating speeds of the first fan and the second fan are automatically matched, the air coefficients are controlled for 1/2 times respectively, and the combustion stability is guaranteed.
In this embodiment, the water heater has adopted double fan combustion system, at product design initial stage debugging stage: the water heater burns in a normal state, the pressure of the combustion cavity of the water heater is tested, the pressure of the combustion cavity under each load point is recorded respectively by making a table, and test data is made into a table to be used as a standard comparison table. In the actual use process of a user, when the installation environment of the water heater changes or the air supply pressure changes, the pressure of the combustion cavity and the normal state also change at the same load point, the pressure is fed back to the master control through the electronic air pressure sensor, at the moment, the master control chip is required to search a table to find the corresponding pressure of the combustion cavity under the current load, then the rotating speeds of the primary air fan and the secondary air fan are controlled to gradually approach the standard pressure of the combustion cavity, and the effect of stable combustion is achieved.
Compared with the prior art, the combustion chamber is divided into two independent cavities, the first fan and the second fan supply air independently respectively, and the air coefficient is controlled for 1/2 times; in the initial stage of product design, two fan rotating speed parameters are adjusted according to the combustion working conditions of the whole machine (the load of the whole machine, the external wind pressure, the length of a smoke pipe, the altitude and the ambient temperature); when a user uses the system, the specific use environment of the system feeds back the pressure of the combustion chamber to the controller, the rotating speeds of the first fan and the second fan are automatically matched, and the air coefficients are respectively controlled for 1/2 times, so that the combustion stability is ensured; when the external wind is too large, the double fans have higher wind resistance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (8)
1. A double-fan combustion system is characterized by comprising a combustion chamber, a first fan, a second fan, a secondary air baffle, a combustor and a control device, wherein the combustion chamber is provided with a first cavity and a second cavity;
the rotating speed parameters of the first fan and the second fan are preset according to the combustion working condition of the whole machine, wherein the combustion working condition of the whole machine comprises the load of the whole machine, the external wind pressure, the length of a smoke pipe, the altitude and the ambient temperature; in the using process of a user, the specific using environment of the system feeds back the pressure of the combustion chamber to the control device, the rotating speeds of the first fan and the second fan are automatically matched, and the air coefficients are controlled for 1/2 times respectively.
2. The dual fan combustion system of claim 1, wherein the secondary air baffle divides a chamber into an upper chamber and a lower chamber, and a plurality of first air vents are formed in the secondary air baffle.
3. The dual fan combustion system of claim 2, wherein an inclined plate is disposed at one side of the lower chamber, both ends of the inclined plate are respectively connected between the secondary air baffle and a bottom plate of the lower chamber, and the bottom plate is provided with a vent corresponding to the first fan.
4. The dual fan combustion system of claim 1, wherein a top plate is disposed on a top of the second cavity, the top plate is provided with a plurality of second ventilation holes, and the second cavity is communicated with the upper cavity through the second ventilation holes.
5. The dual fan combustion system of claim 1, wherein a divider plate is disposed between the first chamber and the second chamber, and a gas pipe connected to a burner fire grate is disposed in the second chamber; and the side parts of the first cavity and the second cavity are provided with positioning plates, a plurality of clamping grooves are formed in the positioning plates, and two sides of the fire grate of the burner are respectively clamped on the clamping grooves.
6. The dual fan combustion system of claim 5, wherein one end of the gas pipe passes through the bottom of the second chamber and is provided with a connector externally connected with a gas pipeline.
7. The dual fan combustion system of claim 1, wherein during an initial design debugging phase of a water heater product, the water heater burns in a normal state, the pressure of the combustion chamber of the water heater is tested, a table is made to record the pressure of the combustion chamber at each load point, and test data is made into a table to serve as a standard comparison table; in the actual use process of a user, when the installation environment of the water heater changes or the air supply pressure changes, the pressure of the combustion chamber and the normal state also change at the same load point, the pressure is fed back to the master control through the electronic air pressure sensor, at the moment, the master control chip is required to search a table to find the corresponding pressure of the combustion chamber under the current load, and then the rotating speeds of the primary air fan and the secondary air fan are controlled to gradually approach the standard pressure of the combustion chamber.
8. A gas water heater corresponding to the double-fan combustion system of any one of claims 1-7 is characterized in that the double-fan combustion system is adopted, rotating speed parameters of a first fan and a second fan are preset according to the combustion working condition of the whole gas water heater, the pressure of a combustion chamber is fed back to a control device according to the specific use environment of the system in the use process of a user, the rotating speeds of the first fan and the second fan are automatically matched, and the air coefficients are controlled for 1/2 times respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111248167.6A CN114061142A (en) | 2021-10-26 | 2021-10-26 | Double-fan combustion system and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111248167.6A CN114061142A (en) | 2021-10-26 | 2021-10-26 | Double-fan combustion system and water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114061142A true CN114061142A (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111248167.6A Pending CN114061142A (en) | 2021-10-26 | 2021-10-26 | Double-fan combustion system and water heater |
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| Country | Link |
|---|---|
| CN (1) | CN114061142A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05322133A (en) * | 1992-05-20 | 1993-12-07 | Sanyo Electric Co Ltd | Gas combustion appliance |
| JPH0640648U (en) * | 1991-05-02 | 1994-05-31 | アタム技研株式会社 | Gas burner combustion device |
| CN109357394A (en) * | 2018-11-30 | 2019-02-19 | 青岛经济技术开发区海尔热水器有限公司 | Multi-fan parallel type gas water heater and control method |
| CN112161292A (en) * | 2020-09-14 | 2021-01-01 | 华帝股份有限公司 | Combustion state control method of combustion system and water heater using combustion state control method |
| CN214120027U (en) * | 2020-10-30 | 2021-09-03 | 芜湖美的厨卫电器制造有限公司 | Combustor and gas equipment |
-
2021
- 2021-10-26 CN CN202111248167.6A patent/CN114061142A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0640648U (en) * | 1991-05-02 | 1994-05-31 | アタム技研株式会社 | Gas burner combustion device |
| JPH05322133A (en) * | 1992-05-20 | 1993-12-07 | Sanyo Electric Co Ltd | Gas combustion appliance |
| CN109357394A (en) * | 2018-11-30 | 2019-02-19 | 青岛经济技术开发区海尔热水器有限公司 | Multi-fan parallel type gas water heater and control method |
| CN112161292A (en) * | 2020-09-14 | 2021-01-01 | 华帝股份有限公司 | Combustion state control method of combustion system and water heater using combustion state control method |
| CN214120027U (en) * | 2020-10-30 | 2021-09-03 | 芜湖美的厨卫电器制造有限公司 | Combustor and gas equipment |
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Application publication date: 20220218 |