CN111692759B - Gas water heater and water flow velocity measuring method thereof - Google Patents
Gas water heater and water flow velocity measuring method thereof Download PDFInfo
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- CN111692759B CN111692759B CN202010398452.5A CN202010398452A CN111692759B CN 111692759 B CN111692759 B CN 111692759B CN 202010398452 A CN202010398452 A CN 202010398452A CN 111692759 B CN111692759 B CN 111692759B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 519
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000012535 impurity Substances 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 27
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001113556 Elodea Species 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
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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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- 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
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
-
- 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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a gas water heater and a water flow velocity measuring method thereof, wherein the gas water heater comprises a water inlet cold water pipe, a water outlet hot water pipe and a heat exchanger, and also comprises: the water outlet end of the water inlet auxiliary water pipe is communicated with the water inlet cold water pipe, and at least part of pipe body of the water inlet auxiliary water pipe carries out local heat exchange with the water outlet hot water pipe; a first temperature sensor; a second temperature sensor; the third temperature sensor is used for detecting temperature information of the water inlet auxiliary water pipe after local heat exchange; the fourth temperature sensor is arranged on the water outlet hot water pipe and close to the heat exchanger; and the controller is used for calculating the water flow rate of the water inlet cold water pipe according to the temperature information respectively detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor. By implementing the technical scheme of the invention, the precision influence of water flow impurities, self abrasion and the like of the traditional turbine type sensor can be solved, and the method is simple to implement and low in cost.
Description
Technical Field
The invention relates to the field of gas water heaters, in particular to a gas water heater and a water flow velocity measuring method thereof.
Background
The water flow sensor of the gas water heater measures magnetic physical quantity by using the Hall effect of a Hall element. When water flows through the water flow sensor, the magnetic rotor rotates, and the rotation speed changes linearly with the flow. When the Hall element receives the changing magnetic field of the magnetic rotor, the controller judges the water flow and adjusts the current of the control proportional valve, so that the gas flow is controlled through the proportional valve, the gas enters the combustion chamber, and meanwhile, the ignition needle discharges and ignites, and the fan motor is started to work. The water inlet end of the water heater is used for measuring the water inlet flow, so that the phenomenon that the gas water heater is warm in summer and cool in winter in the using process is avoided, and meanwhile, the water flow sensor fundamentally solves the problems that the starting water pressure of the differential pressure type water-gas linkage valve is high, and the flap type water valve is easy to malfunction and dry burning occurs. However, since the sensor is mechanically, it is easily affected by impurities in water, for example, the turbine is blocked by waterweeds, and the service life of the rotating shaft of the rotating machine in water impurities is affected to a certain extent, which may cause the accuracy of the sensor to decrease or even fail with the increase of the service time, thereby bringing about safety risk.
The new water flow sensor such as an ultrasonic water flow velocity measuring system is high in manufacturing cost and has high requirements on installation accuracy and contact accuracy, so that the new water flow sensor cannot be applied to the daily products.
Disclosure of Invention
The invention aims to solve the technical problem of providing a gas water heater and a water flow velocity measuring method thereof aiming at the defects of high possibility of being influenced by impurities in water or high cost in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: construct a gas heater, including the cold water pipe of intaking, go out the hot water pipe and connect the cold water pipe of intaking and go out the heat exchanger between the hot water pipe, still include:
the water outlet end of the water inlet auxiliary water pipe is communicated with the water inlet cold water pipe, and at least one part of pipe body of the water inlet auxiliary water pipe performs local heat exchange with the water outlet hot water pipe;
the first temperature sensor is arranged at the water inlet of the water inlet cold water pipe;
the second temperature sensor is arranged at the water outlet of the water outlet hot water pipe;
the third temperature sensor is used for detecting the temperature information of the water inlet auxiliary water pipe after local heat exchange;
the fourth temperature sensor is arranged on the water outlet hot water pipe and close to the heat exchanger;
and the controller is used for calculating the water flow rate of the water inlet cold water pipe according to the temperature information respectively detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor.
Preferably, at least a part of the pipe body of the water inlet auxiliary water pipe is embedded in the water outlet hot water pipe; or at least one part of the pipe body of the water inlet auxiliary water pipe is arranged close to the water outlet hot water pipe.
Preferably, the water flow in at least one part of the pipe body of the water inlet auxiliary water pipe is in the same direction as the water flow of the water outlet hot water pipe; or the water flow in at least one part of the pipe body of the water inlet auxiliary water pipe is opposite to the water flow of the water outlet hot water pipe.
Preferably, the third temperature sensor is arranged between the at least one part of the pipe body of the water inlet auxiliary water pipe and the water outlet end of the water inlet auxiliary water pipe; or the third temperature sensor is arranged on the water inlet cold water pipe close to the heat exchanger.
Preferably, the controller is configured to calculate temperature information respectively detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor according to a dynamic thermal balance relationship, so as to obtain a water flow rate equivalent of the inlet sub-water pipe and a water flow rate equivalent of the outlet hot-water pipe, and calculate a water flow rate of the inlet cold-water pipe according to the water flow rate equivalent of the inlet sub-water pipe, the water flow rate equivalent of the outlet hot-water pipe, a diameter of the inlet sub-water pipe and a diameter of the outlet hot-water pipe.
Preferably, the diameter of the pipe body of the auxiliary water inlet pipe is smaller than the diameter of the pipe body of the cold water inlet pipe and the diameter of the pipe body of the hot water outlet pipe.
Preferably, the water inlet auxiliary water pipe is a U-shaped pipe, and the bottom of the U-shaped pipe and the water outlet hot water pipe perform local heat exchange.
The invention also provides a water flow rate measuring method of the gas water heater, the gas water heater comprises a water inlet cold water pipe, a water outlet hot water pipe and a heat exchanger connected between the water inlet cold water pipe and the water outlet hot water pipe, the water flow rate measuring method comprises the following steps:
acquiring temperature information respectively detected by a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor, wherein the first temperature sensor is arranged at a water inlet of the water inlet cold water pipe; the second temperature sensor is arranged at a water outlet of the water outlet hot water pipe; the third temperature sensor is used for detecting temperature information of the water inlet auxiliary water pipe after local heat exchange, the water outlet end of the water inlet auxiliary water pipe is communicated with the water inlet cold water pipe, and at least one part of pipe body of the water inlet auxiliary water pipe and the water outlet hot water pipe perform local heat exchange; the fourth temperature sensor is arranged on the hot water outlet pipe close to the heat exchanger;
and calculating the water flow rate of the water inlet cold water pipe according to the temperature information respectively detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor.
Preferably, the calculating the water flow rate of the inlet cold water pipe according to the temperature information detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor includes:
according to a dynamic heat balance relation, calculating temperature information respectively detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor to obtain a water flow rate equivalent of the water inlet auxiliary water pipe and a water flow rate equivalent of the water outlet hot water pipe;
and calculating the water flow rate of the water inlet cold water pipe according to the water flow rate equivalent of the water inlet auxiliary water pipe, the water flow rate equivalent of the water outlet hot water pipe, the diameter of the water inlet auxiliary water pipe and the diameter of the water outlet hot water pipe.
Preferably, at least a part of the pipe body of the water inlet auxiliary water pipe is embedded in the water outlet hot water pipe; or at least one part of the pipe body of the water inlet auxiliary water pipe is arranged close to the water outlet hot water pipe.
According to the technical scheme, due to the fact that at least one part of the pipe body of the water inlet auxiliary water pipe and the water outlet hot water pipe have local heat exchange, the water temperature of the water inlet cold water pipe can be increased, the water temperature of the water outlet hot water pipe is decreased, and the specific value of the temperature change is related to the water flow velocity, therefore, the water flow velocity of the water inlet cold water pipe can be determined through calculating the temperature information detected by the four temperature sensors, and the method can solve the problem of accuracy influence caused by water flow impurities, self abrasion and the like of a traditional turbine type sensor and is simple to implement and low in cost.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural view of a first embodiment of a gas water heater according to the present invention;
FIG. 2 is a schematic structural view of a second embodiment of the gas water heater of the present invention;
FIG. 3 is a front elevational view of a third embodiment of the gas water heater of the present invention;
FIG. 4 is a bottom view of the structure of a fourth embodiment of the gas water heater of the present invention;
FIG. 5 is a flow chart of a first embodiment of the water flow rate measurement method for a gas water heater according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a first embodiment of the gas water heater of the present invention, which includes a cold water inlet pipe 203, a hot water outlet pipe 201, a water inlet sub-pipe 202, a heat exchanger 301, a combustion chamber 302, a first temperature sensor 103, a second temperature sensor 102, a third temperature sensor 104, a fourth temperature sensor 101, and a controller (not shown).
In this embodiment, the heat exchanger 301 is connected to the cold water inlet pipe 203 and the hot water outlet pipe 201, and the combustion chamber 302 is connected to a gas inlet (not shown). After the ignition needle discharges and ignites, the gas enters the combustion chamber and starts to burn, so as to heat the water in the heat exchanger 301 and flow out of the hot water outlet pipe 201. In addition, the water outlet end of the water inlet auxiliary water pipe 202 is communicated with the water inlet cold water pipe 203, and a part of the pipe body of the water inlet auxiliary water pipe 202 is embedded in the water outlet hot water pipe 201, so that the part of the pipe body can perform local heat exchange with the water outlet hot water pipe 201.
In this embodiment, the first temperature sensor 103 is disposed at the water inlet of the inlet cold water pipe 203; the second temperature sensor 102 is arranged at the water outlet of the hot water outlet pipe 201; the third temperature sensor 104 is disposed in the water inlet sub-water pipe 202 and embedded between the pipe body portion of the water outlet hot water pipe 201 and the water outlet end, and is used for detecting temperature information of the water inlet sub-water pipe 202 after local heat exchange, of course, in other embodiments, the third temperature sensor may also be disposed on the water inlet cold water pipe 203 near the heat exchanger 301; the fourth temperature sensor 101 is arranged on the hot outlet water pipe 201 close to the heat exchanger 301. The probes of the four temperature sensors are sensitive components, generate corresponding thermoelectric potentials through a measuring element thermocouple, and are transmitted to the controller. The controller receives temperature information detected by the first temperature sensor 103, the second temperature sensor 102, the third temperature sensor 104, and the fourth temperature sensor 101, respectively. The controller is configured to calculate a water flow rate of the inlet cold water pipe based on temperature information detected by the first temperature sensor 103, the second temperature sensor 102, the third temperature sensor 104, and the fourth temperature sensor 101. It should be noted that, since a part of the body of the inlet sub-water pipe 202 is embedded in the outlet hot-water pipe 201, there is a local heat exchange, which will change the outlet temperature of the outlet hot-water pipe 201 and the inlet temperature of the inlet cold-water pipe 203, and will also make the temperature information detected by the second temperature sensor 102 and the fourth temperature sensor 101 different, and the temperature information detected by the first temperature sensor 103 and the third temperature sensor 104 different. Moreover, the faster the water flow speed of the inlet cold water pipe 203 is, the slower the water temperature of the inlet sub-water pipe 202 rises, and the larger the water temperature of the outlet hot water pipe 201 falls; on the contrary, the slower the water flow speed, the faster the water temperature of the inlet sub-water pipe 202 rises, the smaller the water temperature of the outlet hot-water pipe 201 falls, that is, the existence of local heat exchange causes the water temperature of the inlet cold-water pipe 203 to rise, the water temperature of the outlet hot-water pipe 201 to fall, and the specific value of the temperature change is related to the water flow rate, and this relationship can be determined by a pre-established mathematical model, so the water flow rate of the inlet cold-water pipe 203 can be determined by calculating the temperature information detected by the four temperature sensors, and moreover, this way can solve the precision influence of the traditional turbine sensor caused by water flow impurities, self abrasion and the like, and is simple to implement and low in cost.
In addition, as shown in fig. 1, the diameter d3 of the auxiliary water inlet pipe 202 is smaller than the diameter d2 of the cold water inlet pipe 203 and the diameter d1 of the hot water outlet pipe 201, so that unnecessary energy loss can be reduced, and the utilization rate of fuel gas can be improved. The inlet water auxiliary pipe 202 is a U-shaped pipe, the bottom of the U-shaped pipe performs local heat exchange with the outlet hot water pipe 201, and the water flow in the pipe body at the bottom of the U-shaped pipe is opposite to the water flow of the outlet hot water pipe 201. Of course, in other embodiments, the inlet sub-pipe 202 may have other shapes, so that it is possible to make the water flow of the pipe body portion embedded in the hot water outlet pipe in the same direction as the water flow of the hot water outlet pipe.
Further, the controller calculates the temperature information detected by the first temperature sensor 103, the second temperature sensor 102, the third temperature sensor 104, and the fourth temperature sensor 101 according to the dynamic thermal balance relationship to obtain the equivalent water flow rate of the inlet sub-water pipe 202 and the equivalent water flow rate of the outlet hot-water pipe 201, and calculates the water flow rate of the inlet cold-water pipe 203 according to the equivalent water flow rate of the inlet sub-water pipe 202, the equivalent water flow rate of the outlet hot-water pipe 201, the diameter d3 of the inlet sub-water pipe 202, the diameter d1 of the outlet hot-water pipe 201, and the diameter d2 of the inlet cold-water pipe 203.
Fig. 2 is a schematic structural diagram of a second embodiment of the gas water heater of the present invention, which is different from the embodiment shown in fig. 1 only in that: at least a part of the tube body of the water inlet auxiliary water pipe 202 is arranged close to the hot water outlet pipe 201, so that the part of the tube body can perform local heat exchange with the hot water outlet pipe 201.
Fig. 3 and 4 are a front view and a bottom view of a gas water heater according to a third embodiment of the present invention, in which a heat exchanger 301 is connected to a cold water inlet pipe 203 and a hot water outlet pipe 201, and a combustion chamber 302 is connected to a gas inlet pipe 303. The water outlet end of the water inlet auxiliary water pipe 202 is communicated with the water inlet cold water pipe 203, and a part of the pipe body of the water inlet auxiliary water pipe 202 is embedded in the water outlet hot water pipe 201, so that the part of the pipe body can perform local heat exchange with the water outlet hot water pipe 201. The first temperature sensor 103 is arranged at the water inlet of the water inlet cold water pipe 203; the second temperature sensor 102 is arranged at the water outlet of the hot water outlet pipe 201; a third temperature sensor (not shown) is used for detecting the temperature information of the inlet auxiliary water pipe 202 after local heat exchange; the fourth temperature sensor 101 is arranged on the hot outlet water pipe 201 close to the heat exchanger 301. After the ignition needle is ignited by discharging, the gas enters the combustion chamber 302 through the gas inlet pipe 303 and starts to burn, so that the water in the heat exchanger 301 is heated, and flows out of the water outlet hot water pipe 201. The controller is used for calculating the water flow rate of the water inlet cold water pipe according to the temperature information respectively detected by the four temperature sensors.
Fig. 5 is a flowchart of a first embodiment of a water flow rate measuring method of a gas water heater according to the present invention, wherein the gas water heater includes a cold water inlet pipe, a hot water outlet pipe, and a heat exchanger connected between the cold water inlet pipe and the hot water outlet pipe, and the water flow rate measuring method of the embodiment includes the following steps:
s10, acquiring temperature information respectively detected by a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor, wherein the first temperature sensor is arranged at a water inlet of the water inlet cold water pipe; the second temperature sensor is arranged at a water outlet of the water outlet hot water pipe; the third temperature sensor is used for detecting temperature information of the water inlet auxiliary water pipe after local heat exchange, the water outlet end of the water inlet auxiliary water pipe is communicated with the water inlet cold water pipe, and at least one part of pipe body of the water inlet auxiliary water pipe and the water outlet hot water pipe perform local heat exchange; the fourth temperature sensor is arranged on the hot water outlet pipe close to the heat exchanger;
and S20, calculating the water flow rate of the water inlet cold water pipe according to the temperature information respectively detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor.
Further, step S20 includes:
according to a dynamic heat balance relation, calculating temperature information respectively detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor to obtain a water flow rate equivalent of the water inlet auxiliary water pipe and a water flow rate equivalent of the water outlet hot water pipe;
and calculating the water flow rate of the water inlet cold water pipe according to the water flow rate equivalent of the water inlet auxiliary water pipe, the water flow rate equivalent of the water outlet hot water pipe, the diameter of the water inlet auxiliary water pipe and the diameter of the water outlet hot water pipe.
In an optional embodiment, the at least one part of the pipe body of the water inlet auxiliary water pipe is embedded in the water outlet hot water pipe. In another optional embodiment, at least a part of the pipe body of the water inlet auxiliary water pipe is arranged close to the water outlet hot water pipe.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a gas water heater, includes into water cold water pipe, play water hot-water line and connects into water cold water pipe with go out the heat exchanger between the water hot-water line, its characterized in that still includes:
the water outlet end of the water inlet auxiliary water pipe is communicated with the water inlet cold water pipe, and at least one part of pipe body of the water inlet auxiliary water pipe performs local heat exchange with the water outlet hot water pipe;
the first temperature sensor is arranged at the water inlet of the water inlet cold water pipe;
the second temperature sensor is arranged at the water outlet of the water outlet hot water pipe;
the third temperature sensor is used for detecting the temperature information of the water inlet auxiliary water pipe after local heat exchange;
the fourth temperature sensor is arranged on the water outlet hot water pipe and close to the heat exchanger;
and the controller is used for calculating the water flow rate of the water inlet cold water pipe according to the temperature information respectively detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor.
2. The gas water heater of claim 1,
at least one part of the pipe body of the water inlet auxiliary water pipe is embedded in the water outlet hot water pipe; or,
at least one part of the pipe body of the water inlet auxiliary water pipe is arranged close to the water outlet hot water pipe.
3. The gas water heater of claim 1,
the water flow in at least one part of the pipe body of the water inlet auxiliary water pipe is in the same direction as that of the water outlet hot water pipe; or,
the water flow in at least one part of the pipe body of the water inlet auxiliary water pipe is opposite to that of the water outlet hot water pipe.
4. The gas water heater of claim 1,
the third temperature sensor is arranged between the at least one part of the pipe body of the water inlet auxiliary water pipe and the water outlet end of the water inlet auxiliary water pipe; or,
the third temperature sensor is arranged on the water inlet cold water pipe and close to the heat exchanger.
5. The gas water heater according to any one of claims 1-4, wherein the controller is configured to calculate temperature information detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor according to a dynamic thermal balance relationship to obtain a water flow rate of the inlet sub-water pipe and a water flow rate of the outlet hot-water pipe, and calculate a water flow rate of the inlet cold-water pipe according to the water flow rate of the inlet sub-water pipe, the water flow rate of the outlet hot-water pipe, a diameter of the inlet sub-water pipe and a diameter of the outlet hot-water pipe.
6. The gas water heater of claim 1, wherein the diameter of the main inlet pipe is smaller than the diameter of the cold inlet pipe and the diameter of the hot outlet pipe.
7. The gas water heater of claim 1, wherein the auxiliary water inlet pipe is a U-shaped pipe, and the bottom of the U-shaped pipe performs local heat exchange with the hot water outlet pipe.
8. A water flow velocity measuring method of a gas water heater, the gas water heater comprises a water inlet cold water pipe, a water outlet hot water pipe and a heat exchanger connected between the water inlet cold water pipe and the water outlet hot water pipe, and the water flow velocity measuring method comprises the following steps:
acquiring temperature information respectively detected by a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor, wherein the first temperature sensor is arranged at a water inlet of the water inlet cold water pipe; the second temperature sensor is arranged at a water outlet of the water outlet hot water pipe; the third temperature sensor is used for detecting temperature information of the water inlet auxiliary water pipe after local heat exchange, the water outlet end of the water inlet auxiliary water pipe is communicated with the water inlet cold water pipe, and at least one part of pipe body of the water inlet auxiliary water pipe and the water outlet hot water pipe perform local heat exchange; the fourth temperature sensor is arranged on the hot water outlet pipe close to the heat exchanger;
and calculating the water flow rate of the water inlet cold water pipe according to the temperature information respectively detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor.
9. The method for measuring water flow rate of a gas water heater according to claim 8, wherein calculating the water flow rate of the cold water inlet pipe according to the temperature information detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor comprises:
according to a dynamic heat balance relation, calculating temperature information respectively detected by the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor to obtain the water flow rate of the water inlet auxiliary water pipe and the water flow rate of the water outlet hot water pipe;
and calculating the water flow rate of the water inlet cold water pipe according to the water flow rate of the water inlet auxiliary water pipe, the water flow rate of the water outlet hot water pipe, the diameter of the water inlet auxiliary water pipe and the diameter of the water outlet hot water pipe.
10. The method of measuring water flow rate in a gas water heater of claim 8,
at least one part of the pipe body of the water inlet auxiliary water pipe is embedded in the water outlet hot water pipe; or,
at least one part of the pipe body of the water inlet auxiliary water pipe is arranged close to the water outlet hot water pipe.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833101A (en) * | 2015-05-22 | 2015-08-12 | 金陵科技学院 | Constant water temperature adjuster for water heater and realizing method thereof |
| CN204555285U (en) * | 2015-03-25 | 2015-08-12 | 宁波米迪电器有限公司 | A kind of hybrid Thermostatic water heaters for sanitary equipment |
| CN106288344A (en) * | 2016-10-25 | 2017-01-04 | 珠海格力电器股份有限公司 | Gas heating water heater and method for simultaneously providing heating hot water and bathroom hot water |
| CN110058046A (en) * | 2019-04-23 | 2019-07-26 | 中国大唐集团科学技术研究院有限公司华东电力试验研究院 | A kind of fluid flow rate measurement method and device based on convective heat transfer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190353402A1 (en) * | 2018-05-17 | 2019-11-21 | Dong Yong Hot Water System Inc. | Temperature control system of gas-fired water heater |
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- 2020-05-12 CN CN202010398452.5A patent/CN111692759B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204555285U (en) * | 2015-03-25 | 2015-08-12 | 宁波米迪电器有限公司 | A kind of hybrid Thermostatic water heaters for sanitary equipment |
| CN104833101A (en) * | 2015-05-22 | 2015-08-12 | 金陵科技学院 | Constant water temperature adjuster for water heater and realizing method thereof |
| CN106288344A (en) * | 2016-10-25 | 2017-01-04 | 珠海格力电器股份有限公司 | Gas heating water heater and method for simultaneously providing heating hot water and bathroom hot water |
| CN110058046A (en) * | 2019-04-23 | 2019-07-26 | 中国大唐集团科学技术研究院有限公司华东电力试验研究院 | A kind of fluid flow rate measurement method and device based on convective heat transfer |
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