CN208567159U - The secondary pressure self-checking device and gas-fired equipment of gas-fired equipment - Google Patents
The secondary pressure self-checking device and gas-fired equipment of gas-fired equipment Download PDFInfo
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- CN208567159U CN208567159U CN201821076984.1U CN201821076984U CN208567159U CN 208567159 U CN208567159 U CN 208567159U CN 201821076984 U CN201821076984 U CN 201821076984U CN 208567159 U CN208567159 U CN 208567159U
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Abstract
The utility model relates to the secondary pressure self-checking devices and gas-fired equipment of a kind of gas-fired equipment, gas-fired equipment is equipped with secondary pressure test mouth and gas ratio valve, it include: force samples circuit, the pressure information of sampling secondary pressure test mouth, and it is sent to gas-fired equipment controller；Proportioning valve current sampling circuit, samples the current information of gas ratio valve, and is sent to gas-fired equipment controller；Gas-fired equipment controller receives pressure information and current information, generates current regulation and instructs and be sent to proportioning valve current regulating circuit；And proportioning valve current regulating circuit, current regulation instructs the input current of regulating gas proportioning valve based on the received.Gas-fired equipment controller automatically adjusts in the secondary pressure to default secondary pressure value range of secondary pressure test mouth, realizes the closed-loop control of the input current of proportioning valve and the secondary pressure of secondary pressure test mouth, adjusts high-efficient.
Description
Technical field
The utility model relates to gas-fired equipment fields, automatically adjust dress more particularly to a kind of secondary pressure of gas-fired equipment
It sets and gas-fired equipment.
Background technique
Secondary pressure, which refers to, passes through gas ratio valve inside gas-fired equipment (for example, gas-heating water heater, gas heater)
Gaseous-pressure adjusted is the important indicator for determining gas-fired equipment performance.
In traditional technology, since the IP curve (electric current and pressure) of proportioning valve is there are error, gas-fired equipment is in batch
Must be by artificially entering secondary pressure shaping modes during production, and be artificially to go to adjust according to the size of secondary pressure
Gas fuel saving proportioning valve electric current, to remove to determine corresponding gas ratio valve electricity in the secondary pressure zone of reasonableness of each gas-fired equipment
The size of stream, including gas ratio valve electric current corresponding with maximum secondary pressure and minimum secondary pressure.Difference rise numbers, gas kind,
The gas-fired equipment secondary pressure of type is substantially different, and certain uncertainty can be had by artificially adjusting also, so that adjusting process
Relative complex, the time of process is longer.Traditional shaping modes, take time and effort, and adjust low efficiency.
Utility model content
Based on this, it is necessary in view of the above-mentioned problems, it is automatic to provide a kind of secondary pressure for adjusting high-efficient gas-fired equipment
Regulating device and gas-fired equipment.
A kind of secondary pressure self-checking device of gas-fired equipment, the gas-fired equipment are equipped with secondary pressure test mouth and combustion
Gas proportioning valve, comprising:
Force samples circuit, samples the pressure information of the secondary pressure test mouth, and is sent to gas-fired equipment controller；
Proportioning valve current sampling circuit, samples the current information of the gas ratio valve, and is sent to the gas-fired equipment
Controller；
The gas-fired equipment controller receives the pressure information and the current information, generates current regulation instruction simultaneously
It is sent to proportioning valve current regulating circuit；
The proportioning valve current regulating circuit, the based on the received input of the current regulation instruction regulating gas proportioning valve
Electric current.
The secondary pressure self-checking device of gas-fired equipment described in the utility model, it is generated compared with the background art
The utility model has the advantages that Manufacturing Worker is not required to further according to the correspondence type setting corresponding pressure listed in production technology go that secondary pressure is arranged
Power is also not required on production line place the equipment for reading pressure, and Manufacturing Worker only needs to be manually entered secondary pressure setting mode, combustion
The pressure information that gas device controller can be sent according to force samples circuit sends current regulation instruction control proportioning valve electric current
The input current of circuit regulating gas proportioning valve is adjusted to control the aperture of gas ratio valve, it can be in the default model of secondary pressure
The secondary pressure for adjusting secondary pressure test mouth in value is enclosed, realizes that the input current of gas ratio valve and secondary pressure test mouth
The closed-loop control of secondary pressure, and the current information of gas ratio valve is correspondingly adopted by proportioning valve current sampling circuit
Sample is realized secondary pressure automatic adjustment, is adjusted high-efficient.
It in one of the embodiments, further include master control borad；The gas-fired equipment controller, the force samples circuit,
The proportioning valve current sampling circuit and the proportioning valve current regulating circuit are all set in the master control borad.
By same master control borad, integrate gas-fired equipment controller, force samples circuit, proportioning valve current sampling circuit and
Proportioning valve current regulating circuit simplifies structure, is easily installed.
The force samples circuit includes pressure sensor and pressure signal interconnected in one of the embodiments,
Conversion circuit, the pressure signal conversion circuit connect the gas-fired equipment controller.
Secondary pressure is simultaneously converted into pressure telecommunications by the secondary pressure information of pressure sensor induction secondary pressure test mouth
Number it is sent to pressure signal conversion circuit；Received electric pressure signal is converted into pressure desired signal by pressure signal conversion circuit
It is sent to gas-fired equipment controller.In this way, the secondary pressure of secondary pressure test mouth, which is converted into gas-fired equipment controller, to be known
Other signal, according to the pressure on the number signal of identifiable feedback, comparative example valve electric current is adjusted gas-fired equipment controller again,
Realize the closed-loop control of electric current and pressure.
It in one of the embodiments, further include pressure tube and pressure samples mouth；One end of the pressure tube and the pressure
Force snesor connection, the other end of the pressure tube are connect with the pressure samples mouth；The pressure samples mouth is for connecting institute
State secondary pressure test mouth.
By pressure tube and pressure samples mouth, master control borad can be flexibly installed.
The pressure signal conversion circuit is A/D conversion circuit in one of the embodiments,.A/D conversion circuit will press
Force electrical signal is converted into pressure on the number signal and is sent to the gas-fired equipment controller, in this way, electric pressure signal is converted into firing
The identifiable signal of gas device controller, gas-fired equipment controller is according to the pressure on the number signal of identifiable feedback comparative example again
Valve electric current is adjusted, and realizes the closed-loop control of electric current and pressure.
The secondary pressure self-checking device of gas-fired equipment further includes temperature sampling circuit in one of the embodiments,
The temperature sampling circuit connects the gas-fired equipment controller.
Temperature sampling circuit samples the temperature of gas-fired equipment ontology, and temperature is sent to gas-fired equipment controller；Combustion gas
Device controller generates proportioning valve current control and instructs to proportioning valve current regulation when detecting that temperature is not up to preset temperature
Circuit.In this way, by control proportioning valve current control gas proportion valve opening, the ratio of regulating gas and air, to adjust
The temperature of gas-fired equipment.
The secondary pressure self-checking device of gas-fired equipment further includes fan drive circuit in one of the embodiments,
The fan drive circuit connects the gas-fired equipment controller.
Gas-fired equipment controller obtains the input current of gas ratio valve, sends wind according to the input current of gas ratio valve
Machine drive control is instructed to fan drive circuit；Blower drive control instruction control blower turns fan drive circuit based on the received
Speed.In this way, corresponding adjusting rotation speed of fan is needed after input current, that is, gas ratio valve aperture of gas ratio valve determines,
Blower drive control is sent according to the default corresponding relationship between the input current and rotation speed of fan of gas ratio valve to instruct to wind
Drive circuit improves the reliability of gas-fired equipment so that gas-fired equipment can be worked with normal reliable.
A kind of gas-fired equipment, the secondary pressure including gas-fired equipment ontology and gas-fired equipment described in any of the above embodiments are automatic
Regulating device.
Gas-fired equipment described in the utility model, it is generated the utility model has the advantages that Manufacturing Worker is not required to compared with the background art
Setting secondary pressure is removed further according to the correspondence type setting corresponding pressure listed in production technology, is also not required to place on production line and read
The equipment of pressure power, Manufacturing Worker only need to be manually entered secondary pressure setting mode, and gas-fired equipment controller can be according to pressure
The pressure information that power sample circuit is sent sends current regulation instruction control proportioning valve current regulating circuit and adjusts the defeated of proportioning valve
Enter electric current to control the aperture of proportioning valve, the secondary of secondary pressure test mouth can be adjusted in the preset range value of secondary pressure
Pressure, realizes the closed-loop control of the input current of gas ratio valve and the secondary pressure of secondary pressure test mouth, and passes through ratio
Valve current sampling circuit correspondingly samples the current information of gas ratio valve, realizes secondary pressure automatic adjustment, adjusts
It is high-efficient.
Detailed description of the invention
Fig. 1 is the secondary pressure self-checking device structural block diagram of gas-fired equipment in an embodiment；
Fig. 2 is the secondary pressure self-checking device structural block diagram of gas-fired equipment in another embodiment；
Fig. 3 is the secondary pressure self-checking device structural block diagram of gas-fired equipment in another embodiment；
Fig. 4 is the secondary pressure self-checking device structural block diagram of gas-fired equipment in another embodiment；
Fig. 5 is the secondary pressure self-checking device structural block diagram of gas-fired equipment in another embodiment；
Fig. 6 is the secondary pressure self-checking device structural block diagram of gas-fired equipment in another embodiment.
110, force samples circuit, 112, pressure sensor, 114, pressure signal conversion circuit, 116, pressure tube, 118,
Pressure samples mouth, 120, gas-fired equipment controller, 130, proportioning valve current sampling circuit, 140, proportioning valve current regulating circuit,
150, temperature sampling circuit, 160, fan drive circuit.
Specific embodiment
In one embodiment, as shown in Figure 1, a kind of secondary pressure self-checking device of gas-fired equipment, gas-fired equipment
Mouth is tested equipped with secondary pressure and gas ratio valve, the secondary pressure self-checking device of the gas-fired equipment include: that pressure is adopted
Sample circuit 110, the pressure information of sampling secondary pressure test mouth, and it is sent to gas-fired equipment controller 120；Proportioning valve electric current is adopted
Sample circuit 130, samples the current information of gas ratio valve, and is sent to gas-fired equipment controller 120；Gas-fired equipment controller
120, pressure information and current information are received, current regulation is generated and instructs and be sent to proportioning valve current regulating circuit 140；And
Proportioning valve current regulating circuit 140, current regulation instructs the input current of regulating gas proportioning valve based on the received.
Specifically, the secondary pressure self-checking device of the gas-fired equipment of the utility model, is produced compared with the background art
It is raw the utility model has the advantages that Manufacturing Worker be not required to go to be arranged further according to the correspondence type setting corresponding pressure listed in production technology it is secondary
Pressure is also not required on production line place the equipment for reading pressure, and Manufacturing Worker only needs to be manually entered secondary pressure setting mode,
The pressure information that gas-fired equipment controller 120 can be sent according to force samples circuit 110 sends current regulation instruction control ratio
The input current of 140 regulating gas proportioning valve of example valve current regulating circuit, can be secondary to control the aperture of gas ratio valve
The secondary pressure that secondary pressure test mouth is adjusted in the preset range value of pressure, realize the input current of gas ratio valve with it is secondary
The closed-loop control of the secondary pressure of pressure test port, and by proportioning valve current sampling circuit to the current information of gas ratio valve
It is correspondingly sampled, obtains corresponding current information, realize secondary pressure automatic adjustment.
Further, the preset range value of secondary pressure includes the preset maximum pressure value and default minimum pressure of secondary pressure
Force value, gas-fired equipment controller 120 send the first current acquisition and refer to when detecting that pressure information is equal to preset maximum pressure value
It enables to proportioning valve current sampling circuit；When detecting that pressure information is equal to default minimum pressure values, the second current acquisition is sent
It instructs to proportioning valve current sampling circuit；And it receives proportioning valve maximum current and proportioning valve minimum current and stores；Proportioning valve
Current sampling circuit the first current acquisition instruction acquisition proportioning valve maximum current based on the received, the second electric current is adopted based on the received
Collect instruction acquisition proportioning valve minimum current, and proportioning valve maximum current and proportioning valve minimum current are sent to gas-fired equipment control
Device 120.The proportioning valve maximum current in default secondary pressure value range can be collected by proportioning valve current sampling circuit 130
With proportioning valve minimum current, the automatic control for subsequent gas-fired equipment controller 120 provides foundation.
The secondary pressure self-checking device of above-mentioned gas-fired equipment simplifies process, greatly shortens the time of production, improves
Production efficiency and the cost for reducing production, additionally improve the reliability of product.The device be suitable for gas-heating water heater,
The gas-fired equipments such as gas heater, the especially regulating device can rise number, gas kind, type according to the different of gas-fired equipment,
The aperture of proportioning valve can be automatically adjusted when production so that the secondary pressure of secondary pressure test mouth is in default secondary pressure value range
It is interior, guarantee that the secondary pressure of each gas-fired equipment is in the reasonable scope.
In one embodiment, as shown in Fig. 2, the secondary pressure self-checking device of gas-fired equipment further includes master control borad；
Gas-fired equipment controller 120, force samples circuit 110, proportioning valve current sampling circuit 130 and proportioning valve current regulating circuit
140 are all set in master control borad.
Specifically, the circuit being related in the secondary pressure self-checking device of gas-fired equipment is arranged in same master control borad
On, space can be saved, cost is reduced, simplifies structure, is easily installed.
In one embodiment, as shown in figure 3, force samples circuit 110 includes 112 He of pressure sensor interconnected
Pressure signal conversion circuit 114, pressure signal conversion circuit 114 connect gas-fired equipment controller 120.
Specifically, pressure sensor 112, which incudes secondary pressure and secondary pressure is converted into electric pressure signal, is sent to pressure
Force signal conversion circuit 114；Received electric pressure signal is converted into pressure desired signal and sent by pressure signal conversion circuit 114
To gas-fired equipment controller 120.It can in this way, the secondary pressure of secondary pressure test mouth is converted into gas-fired equipment controller 120
The signal of identification, according to the pressure on the number signal of identifiable feedback, comparative example valve electric current carries out gas-fired equipment controller 120 again
It adjusts, realizes the closed-loop control of the input current of proportioning valve and the secondary pressure of secondary pressure test mouth.
Further, in the present embodiment, pressure information is that pressure on the number signal is also possible in other embodiments
Pressure simulation signal is sent to gas-fired equipment controller 120, i.e., includes pressure signal conversion circuit in gas-fired equipment controller 120
114 and controller, pressure signal conversion circuit 114 pressure simulation signal is converted into pressure on the number signal and is sent to control
It is concurrent to generate current regulation instruction when detecting that pressure on the number signal is not belonging to default secondary pressure value range for device, controller
It send to proportioning valve current regulating circuit 140.
In one embodiment, the secondary pressure self-checking device of gas-fired equipment further includes that pressure tube 116 and pressure take
Sample mouth 118；One end of pressure tube is connect with pressure sensor 112, and the other end of pressure tube 116 is connect with pressure samples mouth 118；
Pressure samples mouth 118 is for connecting secondary pressure test mouth.
Specifically, pressure samples mouth 118 samples the secondary pressure of secondary pressure test mouth and is sent to by pressure tube 116
Pressure sensor 112 can flexibly install master control borad by pressure tube 116 and pressure samples mouth 118.
In one embodiment, pressure signal conversion circuit 114 is A/D conversion circuit.Specifically, A/D conversion circuit will
Electric pressure signal, that is, pressure simulation signal is converted into pressure on the number signal and is sent to gas-fired equipment controller 120, in this way, by pressure
Electric signal is converted into the identifiable signal of gas-fired equipment controller 120, and gas-fired equipment controller 120 is according to identifiable feedback
Comparative example valve electric current is adjusted pressure on the number signal again, realizes that the input current of proportioning valve tests the secondary of mouth with secondary pressure
The closed-loop control of pressure.
In one embodiment, as shown in figure 4, the secondary pressure self-checking device of gas-fired equipment further includes temperature sampling
Circuit 150, temperature sampling circuit 150 connect gas-fired equipment controller 120.
Specifically, temperature sampling circuit 150 samples the temperature of gas-fired equipment ontology, and temperature is sent to gas-fired equipment control
Device 120 processed；Gas-fired equipment controller 120 generates the instruction of proportioning valve current control when detecting that temperature is not up to preset temperature
To proportioning valve current regulating circuit 140.In this way, by the aperture of control proportioning valve current control proportioning valve, regulating gas and sky
The ratio of gas, thus the temperature of regulating gas equipment.
In one embodiment, as shown in figure 5, the secondary pressure self-checking device of gas-fired equipment further includes blower driving
Circuit 160, fan drive circuit 160 connect gas-fired equipment controller 120.
Specifically, gas-fired equipment controller 120 obtains the input current of gas ratio valve, according to the input of gas ratio valve
Electric current sends blower drive control and instructs to fan drive circuit 160；The blower driving control based on the received of fan drive circuit 160
System instruction control rotation speed of fan.In this way, being needed pair after input current, that is, gas ratio valve aperture of gas ratio valve determines
Rotation speed of fan should be adjusted, blower is sent according to the default corresponding relationship between the input current and rotation speed of fan of gas ratio valve and is driven
Dynamic control instruction improves the reliable of gas-fired equipment so that gas-fired equipment can be worked with normal reliable to fan drive circuit 160
Property.
In one embodiment, as shown in fig. 6, the secondary pressure self-checking device of gas-fired equipment includes master control borad, pressure
Power sample circuit 110, gas-fired equipment controller 120, proportioning valve current regulating circuit 140, proportioning valve current sampling circuit 130,
Temperature sampling circuit 150 and fan drive circuit 160, force samples circuit 110, proportioning valve current regulating circuit 140, proportioning valve
Current sampling circuit 130, temperature sampling circuit 150 and fan drive circuit 160 are all connected with gas-fired equipment controller 120, and
It is set to master control borad, force samples circuit 110 includes sequentially connected pressure tube 116, pressure samples mouth 118, pressure sensor
112 and pressure signal conversion circuit 114, one end of pressure tube 116 connect with pressure sensor 112, the other end of pressure tube 116
It is connect with pressure samples mouth 118, pressure samples mouth 118 is for connecting secondary pressure test mouth, proportioning valve current regulating circuit 140
With proportioning valve current sampling circuit 130 for connecting proportioning valve.
The secondary pressure self-checking device of above-mentioned gas-fired equipment is sampled in batch production by pressure samples mouth 118
Secondary pressure, and secondary pressure is sent to by pressure sensor 112 by pressure tube 116, pressure sensor 112 is logical by secondary pressure
Power is converted into electric pressure signal, and electric pressure signal is converted into gas-fired equipment controller 120 by pressure signal conversion circuit 114
Identifiable pressure on the number signal is sent to gas-fired equipment controller 120, and gas-fired equipment controller 120 is according to the number pressure of feedback
Comparative example valve electric current is adjusted word signal again, realizes that the input current of proportioning valve and secondary pressure test the secondary pressure of mouth
The different gas-fired equipments corresponding two for rising number, gas kind, type can be stored in advance in closed-loop control, gas-fired equipment controller 120
Secondary pressure automatically adjusts secondary pressure required for gas-fired equipment in production again, simplifies process, greatly shorten production when
Between, it improves production efficiency and reduces the cost of production, additionally improve the reliability of gas-fired equipment.
In one embodiment, a kind of gas-fired equipment, the gas-fired equipment including gas-fired equipment ontology and any of the above-described
Secondary pressure self-checking device.
The gas-fired equipment of the utility model, it is generated the utility model has the advantages that Manufacturing Worker is not required to root again compared with the background art
Setting secondary pressure is removed according to the correspondence type setting corresponding pressure listed in production technology, is also not required to place on production line and reads pressure
The equipment of power, Manufacturing Worker only need to be manually entered secondary pressure setting mode, and gas-fired equipment controller can be adopted according to pressure
Sample circuit send pressure on the number automatic signal detection pressure on the number signal whether in default secondary pressure value range, if it is not,
It then sends current regulation instruction control proportioning valve current regulating circuit and adjusts the input current of proportioning valve to control proportioning valve
Aperture adjusts the secondary pressure of secondary pressure test mouth, realizes that the input current of proportioning valve tests the secondary of mouth with secondary pressure
The closed-loop control of pressure, simplifies process, greatly shortens the time of production, improves production efficiency and reduces the cost of production, separately
The reliability of product is also improved outside.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (8)
1. a kind of secondary pressure self-checking device of gas-fired equipment, the gas-fired equipment is equipped with secondary pressure test mouth and combustion gas
Proportioning valve characterized by comprising
Force samples circuit (110), samples the pressure information of the secondary pressure test mouth, and is sent to gas-fired equipment controller
(120)；
Proportioning valve current sampling circuit (130), samples the current information of the gas ratio valve, and is sent to the gas-fired equipment
Controller (120)；
The gas-fired equipment controller (120) receives the pressure information and the current information, generates current regulation instruction simultaneously
It is sent to proportioning valve current regulating circuit (140)；
And the proportioning valve current regulating circuit (140), the current regulation instruction adjusts the combustion gas ratio based on the received
The input current of example valve.
2. the secondary pressure self-checking device of gas-fired equipment according to claim 1, which is characterized in that further include master control
Plate；The gas-fired equipment controller (120), the force samples circuit (110), the proportioning valve current sampling circuit (130)
The master control borad is all set in the proportioning valve current regulating circuit (140).
3. the secondary pressure self-checking device of gas-fired equipment according to claim 2, which is characterized in that the pressure is adopted
Sample circuit (110) includes pressure sensor interconnected (112) and pressure signal conversion circuit (114), the pressure signal
Conversion circuit (114) connects the gas-fired equipment controller (120).
4. the secondary pressure self-checking device of gas-fired equipment according to claim 3, which is characterized in that further include pressure transmission
Manage (116) and pressure samples mouth (118)；One end of the pressure tube (116) is connect with the pressure sensor (112), described
The other end of pressure tube (116) is connect with the pressure samples mouth (118)；The pressure samples mouth (118) is described for connecting
Secondary pressure tests mouth.
5. the secondary pressure self-checking device of gas-fired equipment according to claim 3, which is characterized in that the pressure letter
Number conversion circuit (114) is A/D conversion circuit.
6. the secondary pressure self-checking device of gas-fired equipment according to claim 1, which is characterized in that further include temperature
Sample circuit (150), the temperature sampling circuit (150) connect the gas-fired equipment controller (120).
7. the secondary pressure self-checking device of gas-fired equipment according to claim 1, which is characterized in that further include blower
Driving circuit (160), the fan drive circuit (160) connect the gas-fired equipment controller (120).
8. a kind of gas-fired equipment, which is characterized in that including gas-fired equipment ontology and combustion gas of any of claims 1-7
The secondary pressure self-checking device of equipment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821076984.1U CN208567159U (en) | 2018-07-06 | 2018-07-06 | The secondary pressure self-checking device and gas-fired equipment of gas-fired equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821076984.1U CN208567159U (en) | 2018-07-06 | 2018-07-06 | The secondary pressure self-checking device and gas-fired equipment of gas-fired equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081607A (en) * | 2019-03-28 | 2019-08-02 | 青岛经济技术开发区海尔热水器有限公司 | A kind of gas heater control method, control system and gas heater |
| CN112524634A (en) * | 2020-11-30 | 2021-03-19 | 芜湖美的厨卫电器制造有限公司 | Control method of water heater, water heater and readable storage medium |
-
2018
- 2018-07-06 CN CN201821076984.1U patent/CN208567159U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081607A (en) * | 2019-03-28 | 2019-08-02 | 青岛经济技术开发区海尔热水器有限公司 | A kind of gas heater control method, control system and gas heater |
| CN110081607B (en) * | 2019-03-28 | 2021-01-19 | 青岛经济技术开发区海尔热水器有限公司 | Control method and control system of gas water heater and gas water heater |
| CN112524634A (en) * | 2020-11-30 | 2021-03-19 | 芜湖美的厨卫电器制造有限公司 | Control method of water heater, water heater and readable storage medium |
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