CN213146519U - Positive pressure detection protection mechanism and steam boiler - Google Patents
Positive pressure detection protection mechanism and steam boiler Download PDFInfo
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- CN213146519U CN213146519U CN202021728604.5U CN202021728604U CN213146519U CN 213146519 U CN213146519 U CN 213146519U CN 202021728604 U CN202021728604 U CN 202021728604U CN 213146519 U CN213146519 U CN 213146519U
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- combustion chamber
- smoke exhaust
- flame
- protection mechanism
- positive pressure
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Abstract
The invention discloses a positive pressure detection protection mechanism and a steam oven, comprising: the combustion chamber is provided with a cavity for combusting the mixed gas; the combustor is provided with an air outlet surface for discharging the mixed gas, and the air outlet surface is positioned in the combustion chamber; the temperature detection assembly comprises a working part for collecting temperature, and the projection of the working part along the vertical direction of the gas outlet surface of the combustor is positioned outside the gas outlet surface of the combustor; and the input end of the smoke exhaust component is communicated with the combustion chamber. In the technical scheme, when the smoke exhaust assembly works normally, flame generated by the burner extends towards the smoke exhaust assembly, and the flame cannot contact the working part at the moment; when the subassembly that discharges fume breaks down, the burning produces the flue gas backward flow, and the combustor is still burning this moment, and flame receives the backward flow flue gas and strikes, and flame extends all around or below, and the orbit of the subassembly normal operating that discharges fume is deviated to the departure, and flame and working part contact this moment, and the working part detects the temperature at this moment and promotes rapidly, can judge this moment and discharge fume the subassembly and be in abnormal condition.
Description
Technical Field
The invention relates to the technical field of gas appliances, in particular to a positive pressure detection protection mechanism and a steam oven.
Background
Steam stoves refer to heat energy conversion equipment for producing steam, and are complex in classification, and a gas steam stove is one of the branches. The gas steam furnace heats water into steam through combustion of mixed gas of gas and air in the combustion chamber, and tail gas in the combustion chamber is discharged through the smoke exhaust assembly; if the subassembly that discharges fume breaks down, the gas steam stove will break down, and current gas steam stove lacks the detection mechanism to above-mentioned trouble.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art, and provides a positive pressure detection protection mechanism and a steam oven, which can quickly detect whether a smoke exhaust component has a fault.
According to a first aspect of the present invention, there is provided a positive pressure detection protection mechanism comprising: the combustion chamber is provided with a cavity for combusting the mixed gas; the combustor is provided with an air outlet surface for discharging mixed gas, and the air outlet surface is positioned in the combustion chamber; the temperature detection assembly comprises a working part for collecting temperature, and the projection of the working part along the vertical direction of the gas outlet surface of the combustor is positioned outside the gas outlet surface of the combustor; and the input end of the smoke exhaust assembly is communicated with the combustion chamber.
According to the utility model discloses malleation detection protection mechanism has following beneficial effect at least: in the technical scheme, when the smoke exhaust assembly works normally, flame generated by the burner extends towards the smoke exhaust assembly, and the flame cannot contact the working part at the moment; when the subassembly that discharges fume breaks down, the burning produces the flue gas backward flow, and the combustor is still burning this moment, and flame receives the backward flow flue gas and strikes, and flame extends all around or below, and the orbit of the subassembly normal operating that discharges fume is deviated to the departure, and flame and working part contact this moment, and the working part detects the temperature at this moment and promotes rapidly, can judge this moment and discharge fume the subassembly and be in abnormal condition. From the above, when the smoke exhaust component fails to cause unsmooth smoke exhaust, the technical scheme can quickly detect the failure of the smoke exhaust component, is very simple and ingenious, and can quickly detect the failure of the smoke exhaust component by means of the change of the flame form.
According to some embodiments of the present invention, the combustion chamber is provided with a first mounting hole on the sidewall, and the working portion is located in the first mounting hole.
According to some embodiments of the utility model, be provided with the through-hole on the combustion chamber inner wall, the work position is located outside the combustion chamber, just the work portion with the through-hole aligns.
According to the utility model discloses a some embodiments still include the shell, the combustion chamber reaches the combustor is installed in the shell, be provided with the second mounting hole on the shell lateral wall, the work portion is installed in the second mounting hole, the shell with have the clearance between the lateral wall of combustion chamber.
According to some embodiments of the invention, the through hole is located at an intermediate position of the combustion chamber side wall.
According to some embodiments of the invention, the combustion chamber is provided with a heat shield on an inner side wall thereof.
According to some embodiments of the present invention, the working portion is provided as a thermistor, the temperature detection assembly further includes a control unit, the control unit is connected to the thermistor, and the control unit controls the operation of the burner.
According to some embodiments of the utility model, the subassembly of discharging fume includes fan, exhaust pipe, preheats the chamber and preheats the pipeline, exhaust pipe one end with the combustion chamber intercommunication, the exhaust pipe other end with preheat the chamber intercommunication, preheat the pipeline and be located preheat the intracavity, the fan is installed in the exhaust pipe.
According to a second aspect of the present invention, there is provided a steam boiler comprising the positive pressure detection protection mechanism described above, wherein a heat exchanger is provided in the combustion chamber.
According to the utility model discloses malleation detection protection mechanism has following beneficial effect at least: in the technical scheme, when the smoke exhaust assembly works normally, flame generated by the burner extends towards the smoke exhaust assembly, and the flame cannot contact the working part at the moment; when the subassembly that discharges fume breaks down, the burning produces the flue gas backward flow, and the combustor still is in the combustion state this moment, and flame receives the backward flow flue gas and strikes, and flame extends all around or below, and the flame orbit of the subassembly normal operating time that discharges fume deviates from, and flame and working part contact this moment, and the working part detects the temperature and promotes rapidly this moment, can judge that the subassembly that discharges fume this moment is in abnormal condition. From the above, when the smoke exhaust component fails to cause unsmooth smoke exhaust, the technical scheme can quickly detect the failure of the smoke exhaust component, is very simple and ingenious, and can quickly detect the failure of the smoke exhaust component by means of the change of the flame form.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
fig. 2 is a schematic perspective view of an embodiment of the present invention.
Reference numerals:
a combustion chamber 10; a cavity 11; a first mounting hole 12; a through hole 13; a heat insulating member 14;
a burner 20; an air outlet surface 21;
a smoke evacuation assembly 30; a fan 31; a smoke exhaust duct 32; a preheating chamber 33; a preheating line 34;
a working section 40;
a heat exchanger 50;
a flame 60;
a housing 70; a gap 71.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, 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, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, 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 limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 and 2, a positive pressure detection protection mechanism includes: the device comprises a combustion chamber 10, a combustor 20, a temperature detection assembly and a smoke exhaust assembly 30, wherein the combustion chamber 10 is provided with a cavity 11 for combustion of mixed gas; the burner 20 is provided with an air outlet surface 21 for discharging the mixed gas, and the air outlet surface 21 is positioned at the bottom in the combustion chamber 10; the temperature detection assembly comprises a working part 40 for collecting temperature, the projection of the working part 40 along the vertical direction of the gas outlet surface 21 of the combustor 20 is positioned outside the gas outlet surface 21 of the combustor 20, and the moving direction of the mixed gas discharged by the combustor 20 is vertical to the gas outlet surface 21; the input end of the smoke exhaust assembly 30 is communicated with the top of the combustion chamber 10, a heat exchanger 50 is arranged in the combustion chamber 10, the heat exchanger 50 is used for absorbing a large amount of heat generated by combustion in the combustion chamber 10, and the heat exchanger 50 is positioned between the combustor 20 and the smoke exhaust assembly 30. In the above technical solution, when the smoke evacuation assembly 30 normally works, the flame 60 generated by the burner 20 extends toward the smoke evacuation assembly 30, in this embodiment, the flame 60 is vertically upward, and the smoke evacuation assembly 30 can rapidly evacuate the smoke in the combustion chamber 10 to form a stable airflow, so that the flame 60 is not diffused to the periphery, and at this time, the flame 60 cannot contact the working portion 40; when the smoke exhaust component 30 breaks down, smoke backflow is generated in the combustion process, the combustor 20 is still in the combustion process, the flame 60 is impacted by the backflow smoke, the flame 60 extends towards the periphery or the lower part and deviates from the track of the smoke exhaust component 30 in the normal working process, the flame 60 is in contact with the working part 40 at the moment, the working part 40 detects that the temperature is rapidly increased at the moment, and the smoke exhaust component 30 can be judged to be in an abnormal state at the moment. It can be seen from the above that when the smoke exhaust component 30 fails to cause unsmooth smoke exhaust, the above technical scheme can rapidly detect the failure, is very simple and ingenious, and achieves rapid detection of whether the smoke exhaust component fails or not by means of the change of the flame 60 form.
Of course, it can be understood that the positions of the burner 20 and the smoke evacuation assembly 30 may be interchanged, that is, the burner 20 is located above the smoke evacuation assembly 30, at this time, if the smoke evacuation assembly 30 fails, the smoke generated by the burner 20 will move upward rapidly, so that the flame 60 extends around or above, and deviates from the track of the smoke evacuation assembly 30 during normal operation, at this time, the flame 60 contacts the working portion 40, and the working portion 40 detects a rapid temperature rise, and it may be determined that the smoke evacuation assembly 30 is in an abnormal state at this time.
Referring to fig. 1 and 2, in some embodiments of the present invention, a first mounting hole 12 is formed on a sidewall of the combustion chamber 10, and the working portion 40 is located in the first mounting hole 12. When the gas outlet surface 21 covers the bottom of the combustion chamber 10, the flame 60 is relatively close to the side wall of the combustion chamber 10, in this embodiment, the working portion 40 is completely located in the first mounting hole 12, when the smoke exhaust assembly normally works, the flame 60 does not enter the first mounting hole 12, when the smoke exhaust assembly fails, the flame 60 rapidly enters the first mounting hole 12, the working portion 40 detects that the temperature is rapidly increased at this time, and it can be determined that the smoke exhaust assembly 30 is in an abnormal state at this time.
It can be understood that when the gas outlet surface 21 only covers the bottom surface of the combustion chamber 10, the working portion 40 can be straightened in the combustion chamber 10, and the quick detection of the failure of the smoke evacuation assembly can also be realized.
When the subassembly of discharging fume normally operates, when some disturbance appear in the mist, the flame 60 of production also can deviate from the normal position, at this moment, if the working part 40 is nearer from flame 60, can detect the temperature and promote rapidly, but the subassembly of discharging fume does not have the trouble this moment, so the testing result mistake appears, takes place for reducing this kind of condition the utility model discloses a some embodiments are provided with through-hole 13 on the combustion chamber 10 inside wall, and the working part 40 is located outside combustion chamber 10, and the working part 40 aligns with through-hole 13. By arranging the working part 40 outside the combustion chamber 10, the flame 60 cannot be deviated from the normal position by the disturbance of the normal airflow, so that the erroneous detection result caused by the disturbance of the airflow can be reduced by increasing the distance from the working part 40 to the normal flame 60.
Referring to fig. 1 and 2, in some embodiments of the present invention, the present invention further includes a housing 70, the combustion chamber 10 and the burner 20 are installed in the housing 70, a second installation hole is formed on a side wall of the housing 70, the working portion 40 is installed in the second installation hole, a gap 71 is formed between the housing 70 and the side wall of the combustion chamber 10, and the size of the gap 71 can be adjusted according to product performance, so as to select a better joint point between false alarm rate and response speed; the working portion 40 has a mounting plate which is fixed to a side wall of the housing 70 by bolts, or the mounting plate is welded to the housing 70, or the like.
Referring to fig. 1 and 2, in some embodiments of the present invention, the through hole 13 is located at an intermediate position of the side wall of the combustion chamber 10, and when the flue gas flows back, the deflection amplitude of the flame 60 at the intermediate position is relatively large, which can improve the detection sensitivity. Of course, it should be understood that the through hole 13 may be disposed at the lower portion or the upper portion of the sidewall of the combustion chamber 10, and only the distance from the working portion 40 to the normal flame 60 needs to be adjusted correspondingly, so as to achieve the fast detection of whether the smoke evacuation assembly is faulty or not.
Referring to fig. 1 and 2, in some embodiments of the present invention, a heat insulation member 14 is disposed on an inner sidewall of the combustion chamber 10, the heat insulation member 14 can reduce heat exchange between heat in the combustion chamber 10 and the outside, and improve heat efficiency, and the heat insulation member 14 can be configured as heat insulation cotton or other members having heat insulation function; the heat insulation member 14 may also be disposed inside or outside the sidewall of the combustion chamber 10, and both of them may reduce heat exchange between the heat inside the combustion chamber 10 and the outside, thereby improving thermal efficiency.
Referring to fig. 1 and 2, in some embodiments of the present invention, the working portion 40 is configured as a thermistor, and the temperature detecting assembly further includes a control unit connected to the thermistor, and the control unit controls the operation of the burner 20. When the flame 60 contacts the thermistor, the thermistor detects a change, and the control unit detects the signal, thereby controlling the burner 20 to stop working and playing a role in protecting equipment.
Of course, it is understood that the working portion 40 may be provided as a thermocouple or other structure as long as it can respond to temperature changes quickly, and the control unit may sound an alarm through a horn while controlling the burner 20 to stop working.
Referring to fig. 1 and 2, in some embodiments of the present invention, the smoke discharging assembly 30 includes a fan 31, a smoke discharging pipe 32, a preheating chamber 33 and a preheating pipeline 34, one end of the smoke discharging pipe 32 is communicated with the combustion chamber 10, the other end of the smoke discharging pipe 32 is communicated with the preheating chamber 33, the preheating pipeline 34 is located in the preheating chamber 33, and the fan 31 is installed in the smoke discharging pipe 32. The fan 31 pumps the flue gas in the combustion chamber 10 into the smoke exhaust pipeline 32, the flue gas is discharged from the preheating cavity 33 after heat exchange with the preheating pipeline in the preheating cavity 33, water in the preheating pipeline enters the heat exchanger 50 for heating after preheating, the temperature of the flue gas is reduced after heat exchange, the heat in the flue gas is recovered, and the heat efficiency of the equipment is improved.
According to a second aspect of the present invention, there is provided a steam oven including the positive pressure detection protection mechanism described above, wherein a heat exchanger 50 is provided in the combustion chamber 10. In the above technical solution, when the smoke evacuation assembly 30 normally works, the flame 60 generated by the burner 20 extends toward the smoke evacuation assembly 30, and at this time, the flame 60 cannot contact the working portion 40; when the smoke exhaust component 30 is in fault, smoke is generated by combustion and flows back, at the moment, the combustor 20 is still in a combustion state, the flame 60 is impacted by the backflow smoke, the flame 60 extends towards the periphery or the lower part and deviates from the flame 60 track when the smoke exhaust component 30 works normally, at the moment, the flame 60 is in contact with the working part 40, the working part 40 detects that the temperature is rapidly increased, and the smoke exhaust component 30 can be judged to be in an abnormal state at the moment. It can be seen from the above that when the smoke exhaust component 30 fails to cause unsmooth smoke exhaust, the above technical scheme can rapidly detect the failure, is very simple and ingenious, and achieves rapid detection of whether the smoke exhaust component fails or not by means of the change of the flame 60 form.
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 changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (9)
1. A positive pressure detection protection mechanism, comprising:
the combustion chamber is provided with a cavity for combusting the mixed gas;
the combustor is provided with an air outlet surface for discharging mixed gas, and the air outlet surface is positioned in the combustion chamber;
the temperature detection assembly comprises a working part for collecting temperature, and the projection of the working part along the vertical direction of the gas outlet surface of the combustor is positioned outside the gas outlet surface of the combustor;
and the input end of the smoke exhaust assembly is communicated with the combustion chamber.
2. The positive pressure detection protection mechanism according to claim 1, wherein a first mounting hole is formed in the side wall of the combustion chamber, and the working portion is located in the first mounting hole.
3. The positive pressure detection protection mechanism according to claim 1, wherein a through hole is formed in an inner side wall of the combustion chamber, the working portion is located outside the combustion chamber, and the working portion is aligned with the through hole.
4. The positive pressure detection protection mechanism according to claim 3, further comprising a housing, wherein the combustion chamber and the burner are mounted in the housing, a second mounting hole is provided in a side wall of the housing, the working portion is mounted in the second mounting hole, and a gap is provided between the housing and a side wall of the combustion chamber.
5. The positive pressure test protection mechanism of claim 4, wherein the through hole is located at a middle position of the side wall of the combustion chamber.
6. The positive pressure detection protection mechanism according to claim 1, wherein a heat insulator is disposed on an inner side wall of the combustion chamber.
7. The positive pressure detection protection mechanism according to claim 1, wherein the working portion is a thermistor, and the temperature detection assembly further comprises a control unit, the control unit is connected with the thermistor, and the control unit controls the operation of the burner.
8. The positive pressure detection protection mechanism according to claim 1, wherein the smoke exhaust assembly comprises a fan, a smoke exhaust duct, a preheating chamber and a preheating pipeline, one end of the smoke exhaust duct is communicated with the combustion chamber, the other end of the smoke exhaust duct is communicated with the preheating chamber, the preheating pipeline is located in the preheating chamber, and the fan is installed in the smoke exhaust duct.
9. A steam oven comprising the positive pressure detection protection mechanism according to any one of claims 1 to 8, wherein a heat exchanger is provided in the combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021728604.5U CN213146519U (en) | 2020-08-18 | 2020-08-18 | Positive pressure detection protection mechanism and steam boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021728604.5U CN213146519U (en) | 2020-08-18 | 2020-08-18 | Positive pressure detection protection mechanism and steam boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213146519U true CN213146519U (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021728604.5U Active CN213146519U (en) | 2020-08-18 | 2020-08-18 | Positive pressure detection protection mechanism and steam boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213146519U (en) |
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2020
- 2020-08-18 CN CN202021728604.5U patent/CN213146519U/en active Active
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