CN110749104A - Active noise reduction fuel gas water heating device and method - Google Patents
Active noise reduction fuel gas water heating device and method Download PDFInfo
- Publication number
- CN110749104A CN110749104A CN201910995364.0A CN201910995364A CN110749104A CN 110749104 A CN110749104 A CN 110749104A CN 201910995364 A CN201910995364 A CN 201910995364A CN 110749104 A CN110749104 A CN 110749104A
- Authority
- CN
- China
- Prior art keywords
- gas
- noise reduction
- water heating
- noise
- heating device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 238000010438 heat treatment Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002737 fuel gas Substances 0.000 title description 2
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000005236 sound signal Effects 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 132
- 238000002485 combustion reaction Methods 0.000 description 9
- 238000001228 spectrum Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- 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)
- Control Of Combustion (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
The invention discloses an active noise reduction gas water heating device and method, wherein the gas water heating device comprises a water heating device body, a burner, a gas distribution rod, a gas pressure detector, a noise reduction assembly and a controller, wherein the burner is arranged on the water heating device body, the gas distribution rod is connected with the burner, the gas pressure detector and the noise reduction assembly are respectively and electrically connected with the controller, the gas pressure detector is arranged on the gas distribution rod and used for detecting the gas pressure on the gas distribution rod and feeding back a detection result to the controller, and the controller controls the noise reduction assembly to send out noise reduction according to a fed-back signal so that the noise reduction sound sent by the noise reduction assembly and the noise generated by the work of the gas water heating device are mutually offset. The gas water heater has a simple structure, and the noise reduction effect of the gas water heater is further improved by offsetting the working noise of the gas water heater through the noise reduction generated by the noise reduction assembly.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an active noise reduction gas water heating device and method.
Background
The gas water heater can generate noise due to gas combustion, water flow or fan operation in the working process, and the generated sound is directly transmitted outwards to generate noise pollution. In the related technologies, most of the noise reduction technologies for gas water heaters mainly adopt measures such as air-fuel ratio adjustment, fan rotating speed change and the like, but the noise reduction effect is not obvious; in addition, there is also active noise reduction, but at a higher cost.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior related art to a certain extent, and therefore, the invention provides an active noise reduction gas water heating device which is simple in structure and can offset the working noise of the gas water heating device through the noise reduction generated by a noise reduction component so as to further improve the noise reduction effect of the gas water heating device.
In addition, the invention also provides an active noise reduction method of the gas water heating device, which is simple and feasible and can effectively improve the use experience of users.
The first object is achieved by the following technical scheme:
the utility model provides a gas hot-water heating system who initiatively falls makes an uproar, includes hot-water heating system body, combustor and branch gas pole, wherein be provided with on the hot-water heating system body the combustor, divide the gas pole with the combustor is connected, still includes atmospheric pressure detector, falls make an uproar subassembly and controller, wherein the atmospheric pressure detector fall make an uproar the subassembly respectively with controller electric connection, the atmospheric pressure detector sets up divide gas pole on in order to be used for detecting divide atmospheric pressure on the gas pole and with the testing result feedback extremely the controller, the controller is according to the signal control who feeds back fall make an uproar the subassembly send fall make an uproar so that fall the noise that the subassembly sent fall with the produced noise of gas hot-water heating system work offsets each other.
In some embodiments, the noise reduction assembly includes a power amplifier circuit and a speaker, wherein the power amplifier circuit and the speaker are electrically connected to the controller, the controller controls the power amplifier circuit to generate an audio signal with the same amplitude and frequency as the current noise and with an opposite phase according to the feedback signal, and the speaker processes the audio signal generated by the power amplifier circuit and then emits noise reduction.
In some embodiments, the speaker is disposed on the hot water unit body in proximity to the source of the generated noise.
In some embodiments, the number of speakers is one or more.
In some embodiments, a fan is disposed inside the hot water device body, and when the number of the speakers is plural, the speakers are disposed on an inner wall of the hot water device body, outside the fan, and/or at a position close to the burner.
The second objective is achieved by the following technical scheme:
an active noise reduction method of a gas water heating device is applied to the gas water heating device in any one of the above embodiments, and comprises the following steps:
starting the gas water heating device;
detecting the gas pressure P of the gas distributing rod at present;
calculating according to the gas pressure P of the current gas distributing rod to obtain the gas flow q;
calculating according to the gas flow Q to obtain the heat load Q of the current gas water heating device;
calculating according to the calculated heat load Q of the current gas water heating device to obtain the current noise;
and sending noise reduction according to the calculated current noise so as to enable the sent noise reduction noise to be mutually offset with the noise generated by the operation of the gas water heating device.
In some embodiments, the calculating step of the gas flow q is:
inquiring relation curve data which is recorded in advance between the gas pressure P of the gas distributing rod and the gas flow q on the controller;
and calculating according to the gas pressure P of the current gas distributing rod and data recorded in the controller in advance to obtain the gas flow q.
In some embodiments, the heat load Q of the current gas-fired water heating apparatus is calculated by the following formula: q is Q × HL, where Q is the thermal load, Q is the gas flow, and HL is the gas low heating value.
In some embodiments, the step of emitting noise reduction is specifically:
inquiring relation curve data which is recorded in advance between the heat load Q of the gas water heating device and the amplitude A and the frequency f of the noise on the controller;
calculating according to the calculated current heat load Q of the gas water heating device and data recorded on the controller in advance to obtain the amplitude A and the frequency f of the current noise;
and generating an audio signal with the same amplitude A and frequency f as the current noise and opposite phase, and then sending out noise reduction.
In some embodiments, the step of emitting noise reduction comprises:
judging whether a shutdown instruction is issued by a user or not, and if the shutdown instruction issued by the user is received, closing the gas water heating device;
and if the shutdown instruction issued by the user is not received, continuously detecting the gas pressure P of the gas distributing rod at present.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the active noise reduction gas water heating device is simple in structure, and the working noise of the gas water heating device can be offset through the noise reduction generated by the noise reduction assembly so as to further improve the noise reduction effect of the gas water heating device.
2. The active noise reduction method of the gas water heating device is simple and feasible, and can effectively improve the use experience of users.
Drawings
FIG. 1 is a schematic structural diagram of a gas-fired water heating apparatus according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an active noise reduction method of a gas water heater according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of the claims of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the embodiment provides an active noise reduction gas water heater, which includes a water heater body 1, a burner 2, and a gas distribution rod 3, wherein the burner 2 is disposed on the water heater body 1, the gas distribution rod 3 is connected to the burner 2, and further includes an air pressure detector 4, a noise reduction assembly 5, and a controller, wherein the air pressure detector 4 and the noise reduction assembly 5 are respectively electrically connected to the controller, the air pressure detector 4 is disposed on the gas distribution rod 3 for detecting the gas pressure on the gas distribution rod 3 and feeding back the detection result to the controller, and the controller controls the noise reduction assembly 5 to send noise reduction according to the fed-back signal so that the noise reduction assembly 5 sends noise reduction and the noise generated by the operation of the gas water heater are offset with each other.
In this embodiment, the gas water heater may be a gas water heater or a wall-hanging stove, or may be set as another more suitable water heater according to actual requirements. The noise generated by the gas water heater mainly comprises fan noise, combustion noise and water flow noise, the frequency spectrum of the noise is relatively fixed, and the noise is mainly influenced by the combustion heat load to change, therefore, the frequency spectrum of the noise can be obtained by determining the combustion heat load, according to the principle that the amplitudes of the noise are mutually offset when the noise is the same in frequency spectrum and opposite in phase, the gas water heater of the embodiment is provided with an air pressure detector 4 on a gas distributing rod 3, a noise reduction component 5 is arranged in a water heater body 1, the gas pressure on the gas distributing rod 3 is detected by the air pressure detector 4 and the detection result is fed back to a controller, the controller controls the noise reduction component 5 to send out noise reduction according to the fed back signal, so that the noise reduction component 5 sends out noise reduction and the noise generated by the gas water heater work are mutually offset, thereby reach the purpose of making an uproar, and then effectively improve gas water heater's noise reduction effect.
Further, the noise reduction assembly 5 comprises a power amplifier circuit 51 and a loudspeaker, wherein the power amplifier circuit 51 and the loudspeaker are respectively electrically connected with the controller, the controller controls the power amplifier circuit 51 to generate an audio signal which is the same as the current noise amplitude and frequency and has an opposite phase according to the fed back signal, and the loudspeaker sends out noise reduction after processing the audio signal generated by the power amplifier circuit 51.
In this embodiment, the gas water heater in the laboratory obtains the data of the relationship curve between the gas pressure and the gas flow of the gas distributing rod 3, and the data of the relationship curve between the thermal load and the noise amplitude and frequency of the gas water heater by detection and calculation, and records the data on the controller, when the gas water heater is started, the gas water heater obtains the current gas flow according to the gas pressure of the gas distributing rod 3 and the pre-recorded data information, so that the controller performs calculation according to the current gas flow to obtain the thermal load of the current gas water heater, and further performs calculation according to the calculated thermal load of the current gas water heater and the pre-recorded data on the controller to obtain the current noise amplitude and frequency, and the controller controls the power amplifier circuit 51 to generate the same amplitude and frequency as the current noise according to the calculated result, The audio signals with opposite phases are processed by the controller to control the loudspeaker to send out noise reduction signals after the audio signals generated by the power amplifier circuit 51 are processed.
Preferably, the loudspeaker is arranged on the water heating device body 1 and close to the position of the generated noise source, the design is reasonable, and the noise reduction effect of the gas water heating device can be further ensured.
Furthermore, the number of the loudspeakers is one or more, and the loudspeakers are reasonable and ingenious in design.
Specifically, the fan 6 is arranged in the water heating device body 1, and when the number of the loudspeakers is multiple, the loudspeakers are arranged on the inner wall of the water heating device body 1, on the outer side of the fan 6 and/or close to the position of the burner 2, and the structure is simple and the design is reasonable.
In this embodiment, the noise generated by the operation of the gas water heater mainly includes the fan noise, the combustion noise and the water flow noise, the frequency spectrum of the noise is relatively fixed, and the noise is mainly changed by the influence of the thermal load of the combustion, therefore, the gas water heater in this embodiment is provided with the fan 6 inside the water heater body 1, the main controller is provided at one side of the burner 2, the control panel is provided on the inner wall of the water heater body 1, the number of the speakers includes five, but is not limited to five, and can also be selected according to the actual requirement, the five speakers are respectively the first speaker, the second speaker, the third speaker, the fourth speaker and the fifth speaker, wherein the first speaker is provided at the position of the control panel on the inner wall of the water heater body 1, the second speaker is provided on the inner wall of the water heater body 1, and the second speaker is provided above the first speaker, the third speaker sets up in the outside of combustor 2 and the one end of keeping away from the master controller, and fourth speaker and fifth speaker set up the both sides at fan 6 respectively. In addition, in the embodiment, the gas water heating device detects the noise at the positions of the five loudspeakers through the noise spectrum analyzer to generate a relation curve between the thermal load of the gas water heating device and the amplitude and frequency of the noise.
Example two:
as shown in fig. 2, the present embodiment provides an active noise reduction method for a gas water heater, which is applied to the gas water heater according to the first embodiment, wherein noise generated by the operation of the gas water heater mainly includes wind noise, combustion noise and water flow noise, the frequency spectrum of the noise is relatively fixed, and the noise is mainly changed by the influence of the thermal load of combustion, so that the frequency spectrum of the noise can be obtained by determining the thermal load of combustion, and according to the principle that the amplitudes of the noise are mutually cancelled when the frequency spectrums are the same and opposite in phase, the gas water heater according to the present embodiment applies the gas water heater according to the first embodiment, and the noise of the current gas water heater is obtained by detecting the gas pressure of the gas distributor, so that the controller controls the noise reduction device to generate noise reduction according to the calculated current noise to cancel the noise generated by the operation of the gas water heater, therefore, the purpose of noise reduction is achieved, the method is simple and feasible, and the use experience of a user can be effectively improved. The gas hot water system in this embodiment can be gas water heater or hanging stove, also can set up other more suitable hot water system according to actual demand.
The active noise reduction method of the gas water heating device comprises the following steps:
and step S101, starting the gas water heating device.
In this embodiment, before the gas water heater is started at a user for the first time, the gas water heater obtains relationship curve data between gas pressure and gas flow of the gas distributing rod and relationship curve data between amplitude and frequency of heat load and noise of the gas water heater through detection and calculation, and records the data on the controller, after the user starts the gas water heater for the first time, the gas water heater is electrified for self-checking, if the self-checking passes, data on the controller is loaded for operation, if the self-checking does not pass, problem information is fed back to the controller to remind the user, and the gas water heater is turned off.
And S102, detecting the gas pressure P of the current gas distributing rod.
In this embodiment, the gas water heater heats and operates and counts down according to the time of predetermineeing, after the count down, starts the gas pressure P that the atmospheric pressure detector detected present gas branch pole to feed back the testing result to the controller on. The preset time in this embodiment is 1min or 2min, but is not limited to the above time, and an appropriate time value may be selected according to actual requirements.
And step S103, calculating according to the gas pressure P of the current gas distributing rod to obtain the gas flow q.
In this embodiment, the data of the relationship curve between the gas pressure P of the gas distributing rod recorded in advance on the controller and the gas flow q is queried, and the calculation is performed according to the gas pressure P of the current gas distributing rod and the data recorded in advance on the controller, so as to obtain the gas flow q corresponding to the gas pressure P of the current gas distributing rod, that is, calculate the current gas flow q.
And step S104, calculating according to the gas flow Q to obtain the heat load Q of the current gas water heating device.
In the present embodiment, the heat load Q of the current gas-fired water heating apparatus is calculated by the following formula: q is Q × HL, where Q is the thermal load, Q is the gas flow, HL is the gas low heating value and HL is the coefficient, to calculate the thermal load Q of the current gas water heater.
And step S105, calculating according to the calculated heat load Q of the current gas water heating device to obtain the amplitude A and the frequency f of the current noise.
In the embodiment, the relation curve data between the heat load Q of the gas water heating device and the amplitude A and the frequency f of the noise recorded on the controller in advance is inquired, and the calculation is carried out according to the heat load Q of the current gas water heating device and the data recorded on the controller in advance, so that the amplitude A and the frequency f of the current noise corresponding to the heat load Q of the current gas water heating device are obtained.
And step S106, sending noise reduction according to the amplitude A and the frequency f of the current noise obtained by calculation so as to enable the sent noise reduction to be mutually offset with the noise generated by the operation of the gas water heating device.
In this embodiment, the controller controls the power amplifier circuit to generate an audio signal having the same phase as the amplitude a and the frequency f of the current noise and having the opposite phase according to the calculated amplitude a and the frequency f of the current noise, and controls the speaker to process the audio signal according to the audio signal generated by the power amplifier circuit to emit noise reduction, so that the noise reduction emitted by the speaker and the noise generated by the operation of the gas water heater are cancelled by each other, thereby achieving the purpose of noise reduction.
Step S107, judging whether a shutdown instruction is issued by a user, and if the shutdown instruction issued by the user is received, closing the gas water heating device;
if the shutdown instruction issued by the user is not received, returning to the step S102 to continuously detect the gas pressure P of the current gas distributing rod.
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 (10)
1. A gas water heater with active noise reduction comprises a water heater body (1), a burner (2) and a gas distributing rod (3), wherein the burner (2) is arranged on the water heating device body (1), the gas distributing rod (3) is connected with the burner (2), it is characterized by also comprising an air pressure detector (4), a noise reduction component (5) and a controller, wherein the air pressure detector (4) and the noise reduction component (5) are respectively electrically connected with the controller, the air pressure detector (4) is arranged on the gas distribution rod (3) and used for detecting the gas pressure on the gas distribution rod (3) and feeding back the detection result to the controller, the controller controls the noise reduction assembly (5) to emit noise reduction according to the feedback signal so that the noise reduction assembly (5) emits the noise and the noise generated by the operation of the gas water heating device are mutually offset.
2. The active noise reduction gas water heating device according to claim 1, wherein the noise reduction assembly (5) comprises a power amplifier circuit (51) and a speaker, wherein the power amplifier circuit (51) and the speaker are electrically connected to the controller respectively, the controller controls the power amplifier circuit (51) to generate an audio signal with the same amplitude and frequency as the current noise and opposite phase according to the feedback signal, and the speaker processes the audio signal generated by the power amplifier circuit (51) and then emits noise reduction.
3. An active noise reduction gas-fired water heating apparatus according to claim 2, characterized in that the speaker is arranged on the water heating apparatus body (1) in a position close to the source of the generated noise.
4. An active noise reduction gas-fired water heating apparatus according to claim 3, wherein the number of said speakers is one or more.
5. An active noise reduction gas water heater according to claim 4, characterized in that a fan (6) is arranged inside the water heater body, and when the number of the speakers is plural, the speakers are arranged on the inner wall of the water heater body (1), outside the fan (6) and/or close to the burner (2).
6. An active noise reduction method of a gas water heater, which is applied to the gas water heater according to any one of claims 1 to 5, and comprises the following steps:
starting the gas water heating device;
detecting the gas pressure P of the gas distributing rod at present;
calculating according to the gas pressure P of the current gas distributing rod to obtain the gas flow q;
calculating according to the gas flow Q to obtain the heat load Q of the current gas water heating device;
calculating according to the calculated heat load Q of the current gas water heating device to obtain the current noise;
and sending noise reduction according to the calculated current noise so as to enable the sent noise reduction noise to be mutually offset with the noise generated by the operation of the gas water heating device.
7. The active noise reduction method of the gas water heating device according to claim 6, wherein the calculation step of the gas flow q is as follows:
inquiring relation curve data which is recorded in advance between the gas pressure P of the gas distributing rod and the gas flow q on the controller;
and calculating according to the gas pressure P of the current gas distributing rod and data recorded in the controller in advance to obtain the gas flow q.
8. The active noise reduction method of the gas water heater according to claim 6, wherein the current heat load Q of the gas water heater is calculated by the following formula: q is Q × HL, where Q is the thermal load, Q is the gas flow, and HL is the gas low heating value.
9. The active noise reduction method of a gas fired water heating apparatus according to claim 6, wherein the step of emitting noise reduction is specifically:
inquiring relation curve data which is recorded in advance between the heat load Q of the gas water heating device and the amplitude A and the frequency f of the noise on the controller;
calculating according to the calculated current heat load Q of the gas water heating device and data recorded on the controller in advance to obtain the amplitude A and the frequency f of the current noise;
and generating an audio signal with the same amplitude A and frequency f as the current noise and opposite phase, and then sending out noise reduction.
10. The active noise reduction method of a gas fired water heater according to claim 6, wherein the step of emitting noise reduced water comprises:
judging whether a shutdown instruction is issued by a user or not, and if the shutdown instruction issued by the user is received, closing the gas water heating device;
and if the shutdown instruction issued by the user is not received, continuously detecting the gas pressure P of the gas distributing rod at present.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910995364.0A CN110749104A (en) | 2019-10-18 | 2019-10-18 | Active noise reduction fuel gas water heating device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910995364.0A CN110749104A (en) | 2019-10-18 | 2019-10-18 | Active noise reduction fuel gas water heating device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110749104A true CN110749104A (en) | 2020-02-04 |
Family
ID=69278917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910995364.0A Pending CN110749104A (en) | 2019-10-18 | 2019-10-18 | Active noise reduction fuel gas water heating device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110749104A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116072118A (en) * | 2023-03-07 | 2023-05-05 | 广东海新智能厨房股份有限公司 | Intelligent control method, device, equipment and medium based on voice recognition |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762983A (en) * | 2016-12-30 | 2017-05-31 | 汇源印刷包装科技（天津）股份有限公司 | A kind of detecting system of reciprocating machine and air pressure linkage |
| CN107101383A (en) * | 2017-05-13 | 2017-08-29 | 广东万家乐燃气具有限公司 | A kind of gas heater production regulation detection device |
| CN108376542A (en) * | 2018-04-19 | 2018-08-07 | 广东万家乐燃气具有限公司 | A kind of gas heater of active noise reduction |
| CN108734933A (en) * | 2017-04-13 | 2018-11-02 | 广东美的智美科技有限公司 | Range hood and control method |
| CN211400332U (en) * | 2019-10-18 | 2020-09-01 | 华帝股份有限公司 | Active noise reduction gas water heating device |
-
2019
- 2019-10-18 CN CN201910995364.0A patent/CN110749104A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762983A (en) * | 2016-12-30 | 2017-05-31 | 汇源印刷包装科技（天津）股份有限公司 | A kind of detecting system of reciprocating machine and air pressure linkage |
| CN108734933A (en) * | 2017-04-13 | 2018-11-02 | 广东美的智美科技有限公司 | Range hood and control method |
| CN107101383A (en) * | 2017-05-13 | 2017-08-29 | 广东万家乐燃气具有限公司 | A kind of gas heater production regulation detection device |
| CN108376542A (en) * | 2018-04-19 | 2018-08-07 | 广东万家乐燃气具有限公司 | A kind of gas heater of active noise reduction |
| CN211400332U (en) * | 2019-10-18 | 2020-09-01 | 华帝股份有限公司 | Active noise reduction gas water heating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116072118A (en) * | 2023-03-07 | 2023-05-05 | 广东海新智能厨房股份有限公司 | Intelligent control method, device, equipment and medium based on voice recognition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9289090B2 (en) | Cooktop appliances with intelligent response to cooktop audio | |
| CN211400332U (en) | Active noise reduction gas water heating device | |
| WO2009037783A1 (en) | Cooling apparatus for electromagnetic induction heating cooker | |
| CN211400331U (en) | Active noise reduction gas water heating device | |
| CN110749104A (en) | Active noise reduction fuel gas water heating device and method | |
| CN109028593B (en) | Air-fuel ratio control method and device for gas heating water heater and gas heating water heater | |
| CN211400333U (en) | Active noise reduction gas water heating device | |
| CN110749105B (en) | Active noise reduction gas water heating device and method | |
| CN105157072A (en) | Microwave oven and microwave oven control method | |
| EP2420741B1 (en) | Control system for a range hood having an automatic fume detection device | |
| CN207764671U (en) | A kind of oven temperature control system | |
| CN112146263A (en) | Water heating equipment, control method thereof and electronic equipment | |
| CN110762728B (en) | Indoor air conditioner simulation noise reduction control method and indoor air conditioner | |
| CN110749106A (en) | Active noise reduction fuel gas water heating device and method | |
| CN107655048B (en) | Range hood and constant air quantity adjusting method and system thereof | |
| CN102314868A (en) | Fan noise inhibition method and device | |
| CN106123077B (en) | A kind of range hood and its air quantity control method adjusted with air quantity | |
| KR101780217B1 (en) | Ventilating system for cook top | |
| CN105352005B (en) | Humidifying method, device and system based on electric heater | |
| CN213272735U (en) | Power sensing device for kitchen range and kitchen range hood linkage control system | |
| CN206609140U (en) | A kind of burnt gas wall hanging furnace with circulation self-checking function | |
| CN112240584B (en) | Noise reduction method of range hood and range hood | |
| CN210662981U (en) | Air outlet cover assembly of range hood | |
| JP4424086B2 (en) | Ventilator and kitchen system | |
| CN111103820A (en) | Cooking control method, cooking control device, cooking appliance and computer readable storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200204 |
|
| RJ01 | Rejection of invention patent application after publication |