CN111189217A - Gas water heater and blockage protection method thereof - Google Patents
Gas water heater and blockage protection method thereof Download PDFInfo
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- CN111189217A CN111189217A CN202010131288.1A CN202010131288A CN111189217A CN 111189217 A CN111189217 A CN 111189217A CN 202010131288 A CN202010131288 A CN 202010131288A CN 111189217 A CN111189217 A CN 111189217A
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- water heater
- fan
- wind pressure
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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
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/107—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium 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 belongs to the technical field of gas water heaters, and particularly relates to a gas water heater and a blockage protection method thereof. The gas water heater comprises a water heater main body, and a controller, an air inlet pipe and a premixer which are arranged on the water heater main body; one end of the air inlet pipe is connected with an air inlet of the water heater, and the other end of the air inlet pipe is communicated with the premixer, wherein the air inlet pipe also comprises a wind pressure sensor and a pressure transmission pipe; the wind pressure sensor is arranged on the water heater main body and is in signal connection with the controller; the air inlet pipe on be equipped with the tuber pipe and pass the pressure mouth, the one end of pressure transmission pipe and the negative pressure on the wind pressure sensor pass the pressure mouth intercommunication, the other end and tuber pipe pass the pressure mouth intercommunication. The gas water heater and the blockage protection method thereof provided by the invention have the advantages that the structure is simple, the blockage protection and the delay exceeding protection in the whole process are realized, the protection judgment is directly carried out according to the relation between the wind pressure and the rotating speed of the fan, and the response speed is high.
Description
Technical Field
The invention belongs to the technical field of gas water heaters, and particularly relates to a gas water heater and a blockage protection method thereof.
Background
The gas water heater is generally installed on a balcony or outdoors, and is often in severe weather conditions such as strong wind, strong rain and the like or under the condition of blocking of an air duct, if the gas water heater does not have certain wind resistance, smoke can easily exceed the standard, and then the gas water heater is flamed out, so that the gas water heater can not be used finally. The existing gas water heater mostly adopts a mechanical wind pressure switch or realizes blockage protection by methods such as indirect current signals fed back by a fan when an air duct is blocked, and the like, so that the use under general environmental change can be met, but the general mechanical wind pressure switch can only protect one point, the whole blockage protection can not be realized, the whole smoke gas can not exceed the standard during the operation of the machine, the shutdown function can not be realized even if the smoke gas exceeds the standard, and the safety of users can be guaranteed; the method of feeding back signals such as current through the fan is an indirect control method, and has a certain limit on the response speed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the gas water heater which is simple in structure, can monitor the air pressure value of the air inlet pipe in real time and can effectively monitor whether the water heater is blocked.
The invention also aims to provide a blockage protection method of the gas water heater, which directly carries out protection judgment according to the relation between the wind pressure and the rotating speed of the fan and has high response speed.
In order to solve the technical problems, the invention adopts the technical scheme that: a gas water heater comprises a water heater main body, a controller, an air inlet pipe and a premixer, wherein the controller, the air inlet pipe and the premixer are arranged on the water heater main body; one end of the air inlet pipe is communicated with an air inlet of the water heater, the other end of the air inlet pipe is communicated with the premixer, and the air inlet pipe further comprises a wind pressure sensor and a pressure transmitting pipe; the wind pressure sensor is arranged on the water heater main body and is in signal connection with the controller; the air inlet pipe on be equipped with the tuber pipe and pass the pressure mouth, the one end of pressure transmission pipe and the pressure transmission mouth intercommunication on the wind pressure sensor, the other end and tuber pipe pass the pressure mouth intercommunication.
The gas water heater with the blockage protection provided by the invention is simple in structure and low in cost, and the blockage protection of the gas water heater is realized by only adding the wind pressure sensor on the basis of the conventional gas water heater, monitoring the wind pressure state of the air inlet pipe through the wind pressure sensor and combining the control of the controller.
In one embodiment, the gas premix device further comprises a gas proportional valve, wherein the gas proportional valve is a gas control gas proportional valve, the gas control gas proportional valve controls the gas quantity participating in combustion according to the air inlet quantity of the air inlet pipe, and the gas proportional valve is communicated with the premixer through a gas inlet pipe; and the gas proportional valve is in signal connection with the controller. Before gas enters the water heater, the gas firstly needs to flow through the gas proportional valve, and the flow of the gas flowing into the water heater is controlled by controlling the gas proportional valve.
In one embodiment, the system further comprises a fan, wherein the air inlet end or the air outlet end of the fan is communicated with the premixer, and the fan is in signal connection with the controller.
In one embodiment, the device further comprises a combustor, a heat exchanger and a smoke exhaust hood, the other end of the fan is communicated with the combustor through a pipeline, the combustor is connected with one end of the heat exchanger, the other end of the heat exchanger is connected with the smoke exhaust hood, and a smoke exhaust port of the smoke exhaust hood is connected with a smoke exhaust pipe.
In one embodiment, the air duct pressure transfer port is located on the straight section of the air inlet duct.
The invention also provides a blockage protection method of the gas water heater, which comprises the following steps:
s1, monitoring a wind pressure signal of a real-time air inlet pipe through a wind pressure sensor, and feeding back a monitored wind pressure value to a controller; meanwhile, the rotating speed n1 of the real-time fan is monitored, and the rotating speed n1 of the fan is fed back to the controller;
s2, calculating a closing threshold n2 of the fan rotating speed under real-time wind pressure;
s3, the controller compares the relation between a fan rotating speed closing threshold n2 and a real-time wind pressure rotating speed n1 in real time, and if n2 is smaller than n1, the step S1 is carried out; if n2 is equal to or greater than n1, go to step S4;
s4, the controller compares the relation between the maintaining time t2 of the real-time wind pressure value and a time threshold t1, if t2 is smaller than t1, the step S1 is carried out, and if t2 is larger than or equal to t1, the step S5 is carried out; wherein, the maintaining time t2 is the time when the real-time monitored wind pressure value maintains a certain value; the time threshold t1 is a threshold of the wind pressure maintaining time set according to the actual condition of the system;
and S5, reporting a fault, controlling the gas proportional valve and the fan to be closed by the controller, and stopping supplying gas to the water heater.
In one embodiment, the method for obtaining the closing threshold n2 includes: firstly, measuring the normal corresponding relation between the rotating speed of a fan and a corresponding wind pressure value when the gas water heater is in a non-blocking state, and forming a 'non-blocking state wind pressure-fan rotating speed curve chart'; then, adjusting the gas water heater to be in a blocking state until the flue gas exceeds the standard, and measuring the relation between the rotating speed of the air outlet machine and the corresponding air pressure value to form a 'wind pressure-fan rotating speed curve diagram' in the blocking state; finally, finding out the corresponding rotating speed value under the same wind pressure P1 in the graph, wherein the fan rotating speed corresponding to the curve chart of the wind pressure in the non-blocking state and the fan rotating speed is n 1; the fan speed corresponding to the "wind pressure-fan speed curve under blocked state" is n 2.
Compared with the prior art, the beneficial effects are: the gas water heater and the blockage protection method thereof provided by the invention have the advantages that the structure is simple, the blockage protection and the delay exceeding protection in the whole process are realized, the protection judgment is directly carried out according to the relation between the wind pressure and the rotating speed of the fan, and the response speed is high.
Drawings
Fig. 1 is a schematic view of the overall structure of the gas water heater of the invention.
FIG. 2 is a schematic diagram of the control relationship of the gas water heater of the present invention.
FIG. 3 is a schematic flow diagram of the process of the present invention.
FIG. 4 is a schematic diagram of a wind pressure-fan speed curve according to the present invention.
Detailed Description
The drawings are for illustration purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention.
Example 1:
as shown in fig. 1 and 2, the gas water heater comprises a water heater main body 1, a controller 2, an air inlet pipe 3 and a premixer 4 which are arranged on the water heater main body 1; one end of the air inlet pipe 3 is communicated with an air inlet of the water heater, and the other end of the air inlet pipe is communicated with the premixer 4, wherein the air inlet pipe also comprises a wind pressure sensor 5 and a pressure transmission pipe 6; the wind pressure sensor 5 is arranged on the water heater main body 1 and is in signal connection with the controller 2; the air inlet pipe 3 on be equipped with tuber pipe biography pressure mouth 8, the one end of biography pressure pipe 6 and the biography pressure mouth 7 intercommunication on the wind pressure sensor 5, the other end and tuber pipe biography pressure mouth 8 intercommunication.
The system comprises a gas proportional valve 9, a fan 11, a combustor 12, a heat exchanger 13 and a smoke exhaust hood, wherein the gas proportional valve 9 is installed at one end of a gas inlet pipe 10, and the other end of the gas inlet pipe 10 is communicated with a premixer 4; and the gas proportional valve 9 and the fan 11 are in signal connection with the controller 2. The air inlet end or the air outlet end of the fan 11 is communicated with the premixer 4, the other end of the fan 11 is communicated with the combustor 12 through a pipeline, the combustor 12 is connected with one end of the heat exchanger 13, the other end of the heat exchanger 13 is connected with the smoke exhaust hood, and the smoke exhaust port of the smoke exhaust hood is connected with the smoke exhaust pipe 14.
The gas proportional valve 9 is a gas control gas proportional valve, the gas control gas proportional valve controls the gas quantity participating in combustion according to the air inlet quantity of the air inlet pipe 3, the gas output by the gas control gas proportional valve is determined by the air inlet quantity generated by the fan 11 according to a set proportion, and the aim of completely combusting the gas and the air is fulfilled by the proportion of the gas and the air.
In one embodiment, the air duct pressure transfer port 8 is located on the straight section of the air inlet duct 3.
In some embodiments, the system further comprises an inlet water temperature sensor, an outlet water temperature sensor and a water flow sensor; the water inlet temperature sensor is arranged on a water inlet pipe of the water heater, and the water outlet temperature sensor is arranged on a water outlet pipe of the water heater; the water flow sensor is arranged on a water inlet pipe of the water heater.
The working principle is as follows:
when the gas water heater works, fresh air enters the premixer 4 from the air inlet pipe 3, meanwhile, due to the action of negative pressure in the premixer 4, gas enters the premixer 4 through the gas proportional valve 9 and the gas inlet pipe 10, the air and the gas enter the fan 11 for further premixing after being premixed by the premixer 4, the premixed gas enters the combustor 12 for combustion, flue gas is discharged through the smoke exhaust pipe 14 after heat exchange by the heat exchanger 13, and the heat load of the gas water heater is realized only by adjusting the rotating speed of the fan 11; the gas water heater enters a blockage protection mode after being normally started, when an air or flue gas circulation channel is blocked, the air pressure of the air inlet pipe 3 can be changed, the change of the air pressure can be transmitted to the air pressure sensor 5 through an air pipe pressure transmitting port 8, a pressure transmitting pipe 6 and a negative pressure transmitting port 7 of the air inlet pipe 3, and the air pressure is transmitted to the controller 2 by the air pressure sensor 5 in real time; at the moment, the pressure difference is reduced, the heat load is reduced, and meanwhile, due to the constant temperature effect of the water heater, the rotating speed of the fan 11 of the water heater is increased to guarantee the output load of the water heater to guarantee the constant temperature target of hot water. In the process, the controller 2 reports a fault after the condition of judging blockage is reached by monitoring the wind pressure value of the wind pressure sensor 5 and the rotating speed of the fan 11, stops supplying gas and cleans residual gas in the combustion chamber.
Fig. 2 is a schematic diagram of the electrical control logic principle of the jam protection according to the present invention. The controller 2 is respectively in signal connection with a water inlet temperature sensor, a water outlet temperature sensor, a water flow sensor, a wind pressure sensor 5, a fan 11 and a fuel gas proportional valve 9, wherein the fan 11 is a direct-current speed regulation fan; the inlet water temperature sensor transmits a temperature signal to the controller 2 through an inlet water temperature feedback circuit; the water outlet temperature sensor transmits a temperature signal to the controller 2 through a water outlet temperature feedback circuit; the wind pressure sensor 5 transmits a wind pressure signal to the controller 2 through a wind pressure signal feedback circuit; the controller 2 controls the fan 11 through a fan 11 control circuit to realize operation at different rotating speeds, and meanwhile, the fan 11 feeds back the real-time rotating speed of the fan 11 to the controller 2 through a rotating speed feedback circuit; the gas proportional valve 9 controls the on-off of the gas proportional valve 9 through a proportional valve control circuit. After the water heater starts to work, the water heater enters a blockage protection mode, the controller 2 collects the data in real time, and judges the blockage states of the air inlet channel and the smoke exhaust channel of the water heater in real time.
Example 2
As shown in fig. 3, the present embodiment provides a blockage protection method for a gas water heater according to embodiment 1, including the following steps:
s1, monitoring a wind pressure signal of a real-time air inlet pipe 3 through a wind pressure sensor 5, and feeding back a monitored wind pressure value to a controller 2; meanwhile, the real-time rotating speed n1 of the fan 11 is monitored, and the rotating speed n1 of the fan 11 is fed back to the controller 2;
s2, calculating a closing threshold n2 of the rotating speed of the fan 11 under real-time wind pressure;
s3, the controller 2 compares the relation between the rotating speed closing threshold n2 of the fan 11 and the real-time wind pressure rotating speed n1 in real time, and if n2 is smaller than n1, the step S1 is carried out; if n2 is equal to or greater than n1, go to step S4;
s4, the controller 2 compares the relation between the maintaining time t2 of the real-time wind pressure value and a time threshold t1, if t2 is smaller than t1, the step S1 is carried out, and if t2 is larger than or equal to t1, the step S5 is carried out; wherein, the maintaining time t2 is the time when the real-time monitored wind pressure value maintains a certain value; the time threshold t1 is a threshold of the wind pressure maintaining time set according to the actual condition of the system;
s5, reporting a fault, controlling the gas proportional valve 9 and the fan 11 to be closed by the controller 2, and stopping supplying gas to the water heater; meanwhile, residual gas in the combustion chamber is cleaned, and the safety of a user is guaranteed.
In one embodiment, as shown in fig. 4, the method for obtaining the closing threshold n2 includes: firstly, measuring the normal corresponding relation between the rotating speed of the fan 11 and the corresponding wind pressure value when the gas water heater is in a non-blocking state, and forming a 'non-blocking state wind pressure-fan rotating speed curve chart'; then, the gas water heater is adjusted to be in a blocking state until the smoke exceeds the standard, and the relation between the rotating speed of the air outlet machine 11 and the corresponding air pressure value is measured to form a 'wind pressure-fan rotating speed curve diagram' in the blocking state; finally, finding out the corresponding rotating speed value under the same wind pressure P1 in the graph, wherein the rotating speed of the fan 11 corresponding to the curve chart of the wind pressure in the non-blocking state and the rotating speed of the fan is n 1; the rotation speed of the fan 11 corresponding to the "wind pressure-fan rotation speed graph in the jammed state" is n 2.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. A gas water heater comprises a water heater main body (1), a controller (2) arranged on the water heater main body (1), an air inlet pipe (3) and a premixer (4); one end of the air inlet pipe (3) is communicated with an air inlet of the water heater, and the other end of the air inlet pipe is communicated with the premixer (4), and the air-conditioning system is characterized by further comprising a wind pressure sensor (5) and a pressure transmission pipe (6); the wind pressure sensor (5) is arranged on the water heater main body (1) and is in signal connection with the controller (2); the air-supply line (3) on be equipped with tuber pipe biography pressure mouth (8), the one end of biography pressure pipe (6) and pressure sensor (5) on biography pressure mouth (7) intercommunication, the other end passes pressure mouth (8) with the tuber pipe and communicates.
2. The gas water heater of claim 1, further comprising a gas proportional valve (9), wherein the gas proportional valve (9) is a pneumatic control gas proportional valve, the pneumatic control gas proportional valve controls the amount of gas participating in combustion according to the amount of air entering the air inlet pipe (3), and the gas proportional valve (9) is communicated with the premixer (4) through a gas inlet pipe (10); the gas proportional valve (9) is in signal connection with the controller (2).
3. The gas water heater of claim 2, further comprising a fan (11), wherein the air inlet end or the air outlet end of the fan (11) is communicated with the premixer (4), and the fan (11) is in signal connection with the controller (2).
4. The gas water heater of claim 3, further comprising a burner (12), a heat exchanger (13) and a smoke exhaust hood, wherein the other end of the fan (11) is communicated with the burner (12) through a pipeline, the burner (12) is connected with one end of the heat exchanger (13), the other end of the heat exchanger (13) is connected with the smoke exhaust hood, and a smoke exhaust port of the smoke exhaust hood is connected with the smoke exhaust pipe (14).
5. A gas water heater according to claim 3, characterized in that the air duct pressure transfer opening (8) is located in the straight section of the air inlet duct (3).
6. A blockage protection method for a gas water heater according to any one of claims 3 to 5, characterized by comprising the following steps:
s1, monitoring a real-time wind pressure signal of an air inlet pipe (3) through a wind pressure sensor (5), and feeding back a monitored wind pressure value to a controller (2); meanwhile, the rotating speed n1 of the fan (11) is monitored in real time, and the rotating speed n1 of the fan (11) is fed back to the controller (2);
s2, calculating a closing threshold n2 of the rotating speed of the fan (11) under real-time wind pressure;
s3, the controller (2) compares the relation between the rotating speed closing threshold n2 of the fan (11) and the real-time wind pressure rotating speed n1 in real time, and if n2 is smaller than n1, the step S1 is carried out; if n2 is equal to or greater than n1, go to step S4;
s4, the controller (2) compares the relation between the maintaining time t2 of the real-time wind pressure value and a time threshold t1, if t2 is smaller than t1, the step S1 is carried out, and if t2 is larger than or equal to t1, the step S5 is carried out; wherein, the maintaining time t2 is the time when the real-time monitored wind pressure value maintains a certain value; the time threshold t1 is a threshold of the wind pressure maintaining time set according to the actual condition of the system;
and S5, reporting a fault, controlling the gas proportional valve (9) and the fan (11) to be closed by the controller (2), and stopping supplying gas to the water heater.
7. The blockage protection method for a gas water heater according to claim 6, wherein the obtaining method of the closing threshold n2 comprises the following steps: firstly, measuring the normal corresponding relation between the rotating speed of the fan (11) and the corresponding wind pressure value when the gas water heater is in a non-blocking state, and forming a 'non-blocking state wind pressure-fan (11) rotating speed curve chart'; then, the gas water heater is adjusted to be in a blocking state until the smoke exceeds the standard, and the relation between the rotating speed of the air outlet machine (11) and the corresponding air pressure value is measured to form a 'wind pressure-fan rotating speed curve diagram' in the blocking state; finally, finding out the corresponding rotating speed value under the same wind pressure P1 in the graph, wherein the rotating speed of the fan (11) corresponding to the curve chart of the wind pressure in the non-blocking state and the rotating speed of the fan is n 1; the rotating speed of the fan (11) corresponding to the graph of the wind pressure and the rotating speed of the fan in the blocked state is n 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010131288.1A CN111189217A (en) | 2020-02-28 | 2020-02-28 | Gas water heater and blockage protection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010131288.1A CN111189217A (en) | 2020-02-28 | 2020-02-28 | Gas water heater and blockage protection method thereof |
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| CN111189217A true CN111189217A (en) | 2020-05-22 |
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| CN202010131288.1A Pending CN111189217A (en) | 2020-02-28 | 2020-02-28 | Gas water heater and blockage protection method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128991A (en) * | 2020-09-02 | 2020-12-25 | 华帝股份有限公司 | Exhaust protection control method and water heater using same |
| CN112902432A (en) * | 2021-01-27 | 2021-06-04 | 宁波方太厨具有限公司 | Gas water heater, air pressure detection method and fan control method |
| CN114941908A (en) * | 2021-02-10 | 2022-08-26 | 芜湖美的厨卫电器制造有限公司 | Control method, gas water heater and medium |
-
2020
- 2020-02-28 CN CN202010131288.1A patent/CN111189217A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128991A (en) * | 2020-09-02 | 2020-12-25 | 华帝股份有限公司 | Exhaust protection control method and water heater using same |
| CN112128991B (en) * | 2020-09-02 | 2022-02-22 | 华帝股份有限公司 | Exhaust protection control method and water heater using same |
| CN112902432A (en) * | 2021-01-27 | 2021-06-04 | 宁波方太厨具有限公司 | Gas water heater, air pressure detection method and fan control method |
| CN114941908A (en) * | 2021-02-10 | 2022-08-26 | 芜湖美的厨卫电器制造有限公司 | Control method, gas water heater and medium |
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