CN110017612A - Constant temperature control method of gas water heater - Google Patents
Constant temperature control method of gas water heater Download PDFInfo
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- CN110017612A CN110017612A CN201910181714.XA CN201910181714A CN110017612A CN 110017612 A CN110017612 A CN 110017612A CN 201910181714 A CN201910181714 A CN 201910181714A CN 110017612 A CN110017612 A CN 110017612A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 297
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000007789 gas Substances 0.000 claims description 67
- 238000012546 transfer Methods 0.000 claims description 27
- 238000009414 blockwork Methods 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000003287 bathing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001595 flow curve Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- 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)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The invention discloses a constant temperature control method of a gas water heater, which comprises the following steps: in the normal operation process of the gas water heater, after the water inlet pipe stops feeding water, the gas water heater is restarted; detecting the water flow of the water inlet pipe, and collecting the water outlet temperature of the water outlet pipe; and respectively comparing the obtained water flow and the minimum starting water flow of the water inlet pipe, the collected water outlet temperature of the water outlet pipe and a preset target temperature, and controlling the first valve body and the second valve body to act according to a comparison result so as to keep the water flowing out of the water outlet pipe in a constant temperature state. The method is simple and feasible, and can effectively solve the problem of overlarge water temperature fluctuation in the use process of the water heater.
Description
Technical field
The present invention relates to kitchen appliance technical field more particularly to a kind of constant-temperature control methods of gas heater.
Background technique
In the related technology, most of gas heaters (except circulatory system type) close water valve again in use
Bathing temperature before needing to can be only achieved after a period of time after restarting, affects the bath comfort of user.
Whether constant temperature is always the most critical factor measuring water heater and haveing excellent performance to water heater, and temperature persistance is for user's
It is the most directly to experience for comfort.The temperature persistance of combustion gas acting water heater is mainly protected by two aspects at present
Card: first, constant temperature of water heater algorithm, matches optimal thermic load by calculating inlet and outlet temperature difference and monitoring water flow size
Section is consistent leaving water temperature with the desired setting temperature of user；Second, directly being set in heat-exchange system water outlet with water route
Bypass line is set, set temperature is reached with water end (W.E.) to meet by hot and cold water mixing.
Constant temperature of water heater algorithm is only to adjust payload by controlling in user's use process, but for user
Frequently cutting off the water in use process is unobvious with the temperature fluctuation control effect of boiled water, so that in a period of time for cutting off the water boiled water
The interior comfort to user causes very big influence；In addition bypass line compensation is to mend the hot water or cold water temperature difference
It repays, however still not can solve the excessive problem of temperature fluctuation of cutting off the water.
Collateral branch's bypass pipe can carry out temperature-compensating to a certain extent to reduce water heater when cutting off the water or supplying water
The excessive problem of produced temperature fluctuation, but the effect when control premixes water is not satisfactory.
Summary of the invention
The present invention is directed to one of solve the problems, such as present in existing the relevant technologies at least to a certain extent, for this purpose, this hair
A kind of bright constant-temperature control method for proposing gas heater, method is simple, can effectively solve to occur in water heater use process
The excessive problem of water temperature fluctuation.
Above-mentioned purpose is achieved by the following technical solution:
A kind of constant-temperature control method of gas heater, the gas heater include heat-exchange system, water inlet pipe and water outlet
Pipe, the heat-exchange system is connect with the water inlet pipe and the outlet pipe respectively, between the water inlet pipe and the outlet pipe
Bypass pipe is provided with so that the water inlet of the water inlet pipe to be connected to the water outlet of the outlet pipe, is arranged on the water inlet pipe
There is the first valve body, first valve body is used to detect and adjust the water flow of the water inlet pipe, is provided on the bypass pipe
Second valve body, second valve body are used to detect and adjust the water flow of the bypass pipe, and the constant-temperature control method includes such as
Lower step:
In the gas heater normal course of operation, after the water inlet pipe stops water inlet and certain interval of time,
Restart the gas heater；
The water flow of the water inlet pipe is detected, while acquiring the leaving water temperature of the outlet pipe；
By the water outlet of the water flow of the water inlet pipe obtained and minimum starting water flow, the outlet pipe collected
Temperature and pre-set target temperature are compared respectively, control first valve body according to comparison result and second valve body acts
So that the water flowed out outward through the outlet pipe keeps temperature constant state.
In some embodiments, if the water flow of the water inlet pipe is less than the minimum starting water flow, according to institute
The water flow for stating bypass pipe controls the valve opening of second valve body.
In some embodiments, by the leaving water temperature of outlet pipe collected and pre-set target temperature according to formula: |
T1-T2 |≤ζ is compared, and wherein T1 is the leaving water temperature of outlet pipe, and T2 is pre-set target temperature, and ζ is deviation franchise；
If | T1-T2 |≤ζ controls second valve body and keeps current valve opening and open simultaneously first valve
Body controls the gas water heater ignition operation；
If | T1-T2 | > ζ continues the valve opening for adjusting second valve body.
In some embodiments, the value range of the ζ is 0.5 DEG C -5 DEG C.
In some embodiments, after the gas water heater ignition is run, according to actual ignition runing time and just
Beginning preset time is compared, and controls first valve body according to comparison result and second valve body acts.
In some embodiments, by the actual ignition runing time and the initial preset time according to formula: t1-
T=0 is compared, and wherein t1 is actual ignition runing time, and t is the initial preset time；
If t1-t is equal to 0, the valve for being closed the valve of second valve body and control first valve body is stayed open
State；
If t1-t is not equal to 0, controls first valve body and second valve body keeps current valve opening.
In some embodiments, gas water heater ignition operation after, judge first valve body water flow whether etc.
In 0, if the water flow of first valve body is equal to 0, the water inlet pipe is again started up the gas heater after stopping water inlet；
If the water flow of first valve body is not equal to 0, continue to be closed described in valve and the control of second valve body
The valve of first valve body is kept open.
In some embodiments, the gas heater further includes control system, and first valve body includes the first water
Flow signal module and the first water transfer control module, the control system respectively with the first water flow signal module, described
The connection of first water transfer control module signal, the first water flow signal module is toward the control system output pulse frequency, institute
It states control system and the first water transfer control module work is controlled to adjust the water inlet pipe according to the pulse frequency fed back
Water flow；
Second valve body includes the second water flow signal module, the second water transfer control module, the control system difference
It is connect with the second water flow signal module, the second water transfer control module signal, the second water flow signal module
Toward the control system output pulse frequency, the control system controls the second water transfer control according to the pulse frequency fed back
Molding block works to adjust the water flow of the bypass pipe.
In some embodiments, the pulse frequency and the water flow are linearly proportional, specifically: f=k*
Q, wherein f is frequency, and k is coefficient, and Q is water flow value.
In some embodiments, the gas heater further includes the first temperature sensor and second temperature sensor,
First temperature sensor is set on the water inlet pipe, and the second temperature sensor is set on the outlet pipe.
Compared with prior art, the present invention at least having the effect that
1, the constant-temperature control method of gas heater of the present invention, method simple possible can effectively solve water heater use
The excessive problem of the water temperature fluctuation occurred in the process, further improves user experience.
2, which reduce the loads of gas heater initialization, and then have reached energy saving purpose.
3, it can effectively reduce noise caused by gas water heater ignition operation initialization section.
Other beneficial outcomes of the invention will be explained in conjunction with attached drawing in a specific embodiment.
Detailed description of the invention
Fig. 1 is the flow diagram of control method in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of gas heater in the embodiment of the present invention；
Fig. 3 is linear ratio relation's schematic diagram of pulse frequency and water flow in the embodiment of the present invention；
Fig. 4 is the relation schematic diagram of number of motor steps and water flow in the embodiment of the present invention.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Embodiment one: it is as shown in Figures 1 to 4, the present embodiment provides a kind of constant-temperature control method of gas heater,
Middle gas heater includes heat-exchange system 1, water inlet pipe 2 and outlet pipe 3, and heat-exchange system 1 connects with water inlet pipe 2 and outlet pipe 3 respectively
It connects, is provided with bypass pipe 4 between water inlet pipe 2 and outlet pipe 3 to connect the water outlet of the water inlet of water inlet pipe 2 and outlet pipe 3
It is logical, the first valve body 21 is provided on water inlet pipe 2, the first valve body 21 is used to detect and adjust the water flow of water inlet pipe 2, is bypassing
The second valve body 41 is provided on pipe 4, the second valve body 41 is used to detect and adjust the water flow of bypass pipe 4.
The gas heater of the present embodiment, structure is simple, compact, can effectively solve user middle section in bathing and stop supplying
The problem that generated water temperature fluctuation is excessive when gas heater is restarted after water.In addition, it, which further improves user, uses body
It tests, so that product has more the market competitiveness.
Further, the gas heater further includes control system, and first valve body includes the first water flow signal
Module and the first water transfer control module, the control system respectively with the first water flow signal module, first water transfer
The connection of control module signal, the first water flow signal module are toward the control system output pulse frequency, the control
System controls the first water transfer control module work according to the pulse frequency fed back to adjust the water flow of the water inlet pipe；
Second valve body includes the second water flow signal module, the second water transfer control module, the control system difference
It is connect with the second water flow signal module, the second water transfer control module signal, the second water flow signal module
Toward the control system output pulse frequency, the control system controls the second water transfer control according to the pulse frequency fed back
Molding block works to adjust the water flow of the bypass pipe, and structure is simple, and design rationally, can precisely rapidly adjust valve and open
Degree.
Specifically, gas heater further includes the first temperature sensor and second temperature sensor, the first temperature sensor
It is set on water inlet pipe, second temperature sensor is set on outlet pipe, and structure is simple, can precisely be detected in gas heater
Water temperature.
In the present embodiment, gas heater mainly by include heat-exchange system 1, water inlet pipe 2 and outlet pipe 3 form, wherein
Water inlet pipe 2 is the main road of gas heater water inlet end, and outlet pipe 3 is the main road of gas heater water outlet, in water inlet pipe 2 and is gone out
Bypass pipe 4 is provided between water pipe 3 so that the water inlet of water inlet pipe 2 to be connected to the water outlet of outlet pipe 3, bypass pipe 4 can be made
For the branch of water inlet end, the first valve body 21 is mounted on water inlet pipe 2, and the second valve body 41 is mounted on bypass pipe 4 and second
Check valve 5 is provided between valve body 41 and outlet pipe 3, the conducting direction of check valve 5 is that the water inlet end of bypass pipe 4 leads to outlet pipe
3 water outlet, external cold water enters after heat-exchange system 1 is heated through water inlet pipe 2 to flow out outward through outlet pipe 3, can also be with
It is flowed out outward after water inlet pipe enters bypass pipe by outlet pipe, it certainly can also be simultaneously respectively through water inlet pipe 2 and bypass pipe 4
It is flowed out outward by outlet pipe 3 afterwards.Temperature sensor has can be set for detecting water inlet in first valve body 21 of the present embodiment
Temperature value does constant temperature prediction, and the second valve body 41 can be not provided with temperature sensor, but be not limited to above-mentioned setting, can also be according to reality
Border situation is provided with temperature sensor.
In the present embodiment, gas heater further comprises control system, and the first valve body 21 is mainly by the first water flow
Signaling module and the first water transfer control module composition, control system are controlled with the first water flow signal module, the first water transfer respectively
Module by signal connection, wherein the first water transfer control module has the first valve and first motor, in the first water flow signal module
Hall element perception water flow rotor rotation frequency and to control system output pulse frequency, control system is according to being fed back
Pulse frequency control first motor work, the first water transfer control module controls opening for the first valve by the step number of first motor
Degree, and then realize the water flow size of automatic adjustment water inlet pipe 2.The first motor of the present embodiment is preferably stepper motor, but not
It is limited to stepper motor, can also selects other more particularly suitable motors according to actual needs,
Second valve body 41 of the present embodiment is mainly made of the second water flow signal module and the second water transfer control module,
Control system is connect with the second water flow signal module, the second water transfer control module signal respectively, wherein the first water transfer controls mould
Block has the second valve and the second motor, the frequency of the Hall element perception water flow rotor rotation in the second water flow signal module
And to control system output pulse frequency, control system controls the second motor according to the pulse frequency fed back and works, second
Water transfer control module controls the aperture of the second valve by the step number of the second motor, and then realizes the water of automatic adjustment bypass pipe 4
Uninterrupted.Second motor of the present embodiment is preferably similarly stepper motor, but is not limited to stepper motor, can also be according to reality
It needs to select other more particularly suitable motors.
As shown in figure 3, pulse frequency and water flow are linearly proportional, specifically: f=k*Q, wherein f is frequency, k
For coefficient, Q is water flow value.
As shown in figure 4, by number of motor steps come the valve opening of regulation valve body in water flow adjustment module, thus regulation pipe
The water flow size on road, the corresponding relationship between number of motor steps and water flow is as shown in figure 3, wherein water adjusting valve is in motor most
When big step number, the valve of valve body is in close state, be water flow be 0.
Embodiment two: as shown in Fig. 1, Fig. 3 and 4, a kind of perseverance applied to above-mentioned gas heater is present embodiments provided
Warm control method, constant-temperature control method specifically comprise the following steps:
Step S101, in gas heater normal course of operation, after water inlet pipe stops water inlet and certain interval of time,
Restart gas heater.
In the present embodiment, gas heater is closed after user takes a shower for the first time and temporarily ceases water supply, in certain interval of time
After need to continue take a shower when, restarting gas heater work, similarly, the first valve body, which is set in, closes on first motor
Maximum step number state is so that the first valve body is closed.
Step S102, detects the water flow of water inlet pipe, while acquiring the leaving water temperature of outlet pipe.
The water flow of water inlet pipe obtained and minimum starting water flow are compared, tie according to comparing by step S103
Fruit controls the first valve body and the movement of the second valve body, if the water flow of water inlet pipe is less than minimum starting water flow, according to bypass pipe
Water flow control the second valve body valve opening.
In the present embodiment, when the water flow of water inlet pipe is less than minimum starting water flow, gas heater is not necessarily at this time
Igniting operation is carried out, the water flow of bypass pipe is fed back to control system by the second valve body, and control system is according to the pulse fed back
Frequency controls the work of the second motor, and the second water transfer control module is opened by the valve that the step number of the second motor controls the second valve body 41
Degree, and then realize the water flow size for adjusting bypass pipe 4.The decision condition of the gas heater operation igniting of the present embodiment itself
It is normal starting ignition when to detect that the water flow of water inlet pipe is greater than minimum starting water flow when water flow signal module
Journey, gas heater is in normal use process, is not to begin to warm up in real time, only when water inlet pipe when opening water flow
When water flow is greater than minimum starting water flow, it just will start gas heater and work.If the water flow of water inlet pipe is less than
Minimum starting water flow requires to be not have enabling signal, if that the water flow of water inlet pipe is greater than minimum starting water flow
Then illustrate that water inlet pipe water route is not yet closed, i.e., is not necessary item when gas heater restarts operation in above-mentioned constant-temperature control method
Part.
Step S104, by the leaving water temperature of outlet pipe collected and pre-set target temperature according to formula: | T1-T2 |≤ζ
It is compared, wherein T1 is the leaving water temperature of outlet pipe, and T2 is pre-set target temperature, and ζ is deviation franchise；
If | T1-T2 |≤ζ controls the second valve body and keeps current valve opening and open simultaneously the first valve body, control
Gas water heater ignition operation；
If | T1-T2 | > ζ continues the valve opening for adjusting the second valve body.
In the present embodiment, by the leaving water temperature of outlet pipe collected and pre-set target temperature according to formula: | T1-T2 |
≤ ζ is compared, and is fluctuated in this deviation franchise according to the temperature gap of the two as decision criteria, for judging the
The valve opening and duration of valve opening of two valve bodies, if | T1-T2 |≤ζ, control system control the second valve body and keep current valve
Aperture and given pulse signal open valve to control the first valve body according to specified pulse signal.The ζ of the present embodiment is deviation
It is worth franchise, ζ may be set to arbitrary value, and value range is 0.5 DEG C -5 DEG C, according to actual needs different set different value, can be excellent
It is selected as 1.5 DEG C.
Step S105, after gas water heater ignition operation, by actual ignition runing time and initial preset time according to
Formula: t1-t=0 is compared, and wherein t1 is actual ignition runing time, and t is the initial preset time；
If t1-t is equal to 0, the second valve body restores to return in maximum step number state with closure valve and the first valve body of control
To be kept open, external cold water enters past through outlet pipe after heat-exchange system is heated normal water curve through water inlet pipe
Outer outflow；
If t1-t is not equal to 0, controls the first valve body and the second valve body keeps current valve opening to continue to run work.
Step S105 judges whether the water flow of the first valve body is equal to 0, if the first valve after gas water heater ignition operation
The water flow of body is equal to 0, then water inlet pipe is again started up gas heater after stopping water inlet, with this circular flow work；
If the water flow of the first valve body is not equal to 0, continue the valve of the valve for being closed the second valve body and the first valve body of control
Door is kept open.
The gas heater of the present embodiment is cut off the water the temperature changing process of restarting process specifically: assuming that water inlet pipe water route
Water flow temperature is T1, and water flow V1, terminal leaving water temperature is T, and the water flow temperature in bypass pipe water route is T2, bypass pipe water route
Water flow is V2, and ψ is penalty coefficient, then terminal average temperature are as follows: T=ψ * (T1*V1+T2*V2)/(V1+V2).
After opening operation, gas heater makes its work carry out work in the case where being suitble to load according to water flow value and inflow temperature
Make, under normal bathing state, the first valve body is normally-open, and valve opening state is adjusted according to required water flow curve；
Second valve body is set in the maximum step number state of the second motor, to be closed bypass pipe water route.
The original operating state of gas heater: can set water inlet pipe water route and bypass pipe water route while open, relative to
Single valve operating mode, under conditions of inflow is certain, water flow and temperature rise value under rated load are inversely；In bivalve
In mode, first can be increased at this time in lesser load section by gas water heater working under conditions of meeting certain water flow
The step number of motor reduces the step number of the second motor, according to the leaving water temperature of outlet pipe collected and pre-set target temperature institute ratio
Compared with result adjust the valve opening of the second valve body, accordingly adjusted according to the temperature changing process of above-mentioned restarting process of cutting off the water
Section can meet the constant temperature requirement of gas heater, then be controlled according to single valve working condition.
The gas heater of the present embodiment can effectively be solved in use process by applying above-mentioned constant-temperature control method
The excessive problem of the middle water temperature fluctuation occurred, further improves user experience, while also reducing to a certain extent just
Workload under beginning state reaches energy saving purpose, and then reduces generated set noise when gas heater initial launch.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (10)
1. a kind of constant-temperature control method of gas heater, the gas heater includes heat-exchange system, water inlet pipe and outlet pipe,
The heat-exchange system is connect with the water inlet pipe and the outlet pipe respectively, is arranged between the water inlet pipe and the outlet pipe
There is bypass pipe the water inlet of the water inlet pipe to be connected to the water outlet of the outlet pipe, is provided on the water inlet pipe
One valve body, first valve body are used to detect and adjust the water flow of the water inlet pipe, are provided with second on the bypass pipe
Valve body, second valve body are used to detect and adjust the water flow of the bypass pipe, which is characterized in that the constant-temperature control method
Include the following steps:
In the gas heater normal course of operation, after the water inlet pipe stops water inlet and certain interval of time, again
Start the gas heater；
The water flow of the water inlet pipe is detected, while acquiring the leaving water temperature of the outlet pipe；
By the leaving water temperature of the water flow of the water inlet pipe obtained and minimum starting water flow, the outlet pipe collected
Be compared respectively with pre-set target temperature, according to comparison result control first valve body and second valve body act so that
The water flowed out outward through the outlet pipe keeps temperature constant state.
2. a kind of constant-temperature control method of gas heater according to claim 1, which is characterized in that if the water inlet pipe
Water flow be less than it is described it is minimum start water flow, then the valve of second valve body is controlled according to the water flow of the bypass pipe
Aperture.
3. a kind of constant-temperature control method of gas heater according to claim 2, which is characterized in that by it is collected go out
The leaving water temperature and pre-set target temperature of water pipe are according to formula: | T1-T2 |≤ζ is compared, and wherein T1 is the water outlet of outlet pipe
Temperature, T2 are pre-set target temperature, and ζ is deviation franchise；
If | T1-T2 |≤ζ controls second valve body and keeps current valve opening and open simultaneously first valve body,
Control the gas water heater ignition operation；
If | T1-T2 | > ζ continues the valve opening for adjusting second valve body.
4. a kind of constant-temperature control method of gas heater according to claim 3, which is characterized in that the value of the ζ
Range is 0.5 DEG C -5 DEG C.
5. a kind of constant-temperature control method of gas heater according to claim 3, which is characterized in that when the combustion gas heat
It after hydrophone igniting operation, is compared according to actual ignition runing time and initial preset time, institute is controlled according to comparison result
State the first valve body and second valve body movement.
6. a kind of constant-temperature control method of gas heater according to claim 5, which is characterized in that by the actual point
Fiery runing time and the initial preset time are according to formula: t1-t=0 is compared, when wherein t1 is that actual ignition is run
Between, t is the initial preset time；
If t1-t is equal to 0, the valve for being closed the valve of second valve body and control first valve body is kept open；
If t1-t is not equal to 0, controls first valve body and second valve body keeps current valve opening.
7. a kind of constant-temperature control method of gas heater according to claim 1, which is characterized in that gas heater point
After fire operation, judge whether the water flow of first valve body is equal to 0, if the water flow of first valve body is equal to 0, described in
Water inlet pipe is again started up the gas heater after stopping water inlet；
If the water flow of first valve body is not equal to 0, continue the valve for being closed second valve body and control described first
The valve of valve body is kept open.
8. a kind of constant-temperature control method of gas heater according to claim 1, which is characterized in that the gas and hot water
Device further includes control system, and first valve body includes the first water flow signal module and the first water transfer control module, the control
System processed is connect with the first water flow signal module, the first water transfer control module signal respectively, first water flow
Signaling module is measured toward the control system output pulse frequency, the control system is according to the pulse frequency control fed back
First water transfer control module works to adjust the water flow of the water inlet pipe；
Second valve body include the second water flow signal module, the second water transfer control module, the control system respectively with institute
The second water flow signal module, the second water transfer control module signal connection are stated, the second water flow signal module is toward institute
Control system output pulse frequency is stated, the control system controls second water transfer according to the pulse frequency fed back and controls mould
Block works to adjust the water flow of the bypass pipe.
9. a kind of constant-temperature control method of gas heater according to claim 8, which is characterized in that the pulse frequency
It is linearly proportional with the water flow, specifically: f=k*Q, wherein f is frequency, and k is coefficient, and Q is water flow value.
10. a kind of constant-temperature control method of gas heater according to claim 1, which is characterized in that the combustion gas heat
Hydrophone further includes the first temperature sensor and second temperature sensor, and first temperature sensor is set to the water inlet pipe
On, the second temperature sensor is set on the outlet pipe.
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| CN111365856A (en) * | 2020-03-16 | 2020-07-03 | 华帝股份有限公司 | Constant-temperature gas water heater and constant-temperature control method thereof |
| CN111365855A (en) * | 2020-03-16 | 2020-07-03 | 华帝股份有限公司 | Gas water heater capable of realizing multistage current limiting and temperature control and control method thereof |
| CN111878994A (en) * | 2020-06-19 | 2020-11-03 | 华帝股份有限公司 | Constant-temperature gas water heater and control method thereof |
| CN112066567A (en) * | 2020-10-09 | 2020-12-11 | 宁波方太厨具有限公司 | Constant temperature control method and system for gas water heater, electronic equipment and storage medium |
| CN112762621A (en) * | 2021-01-08 | 2021-05-07 | 宁波方太厨具有限公司 | Gas distributor, electrodeless gas distribution method for water heater and distribution system |
| CN112797631A (en) * | 2020-12-16 | 2021-05-14 | 青岛经济技术开发区海尔热水器有限公司 | Water temperature control method, device and equipment based on water quantity server |
| CN113154692A (en) * | 2021-05-25 | 2021-07-23 | 华帝股份有限公司 | Constant temperature control method and device |
| CN113587422A (en) * | 2020-04-30 | 2021-11-02 | 芜湖美的厨卫电器制造有限公司 | Water heater, water heater control method and computer readable storage medium |
| CN113983682A (en) * | 2021-11-29 | 2022-01-28 | 广东万和热能科技有限公司 | Gas water heater and control method and device thereof |
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| CN112066567A (en) * | 2020-10-09 | 2020-12-11 | 宁波方太厨具有限公司 | Constant temperature control method and system for gas water heater, electronic equipment and storage medium |
| CN112797631A (en) * | 2020-12-16 | 2021-05-14 | 青岛经济技术开发区海尔热水器有限公司 | Water temperature control method, device and equipment based on water quantity server |
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| CN113154692A (en) * | 2021-05-25 | 2021-07-23 | 华帝股份有限公司 | Constant temperature control method and device |
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