CN110806012B - Control method of zero-cooling water gas water heater and zero-cooling water gas water heater - Google Patents
Control method of zero-cooling water gas water heater and zero-cooling water gas water heater Download PDFInfo
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- CN110806012B CN110806012B CN201911088361.5A CN201911088361A CN110806012B CN 110806012 B CN110806012 B CN 110806012B CN 201911088361 A CN201911088361 A CN 201911088361A CN 110806012 B CN110806012 B CN 110806012B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 348
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000498 cooling water Substances 0.000 title description 7
- 238000001816 cooling Methods 0.000 claims 1
- 230000003044 adaptive effect Effects 0.000 abstract description 3
- 238000005406 washing Methods 0.000 description 4
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 238000003287 bathing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention discloses a control method of a zero cold water gas water heater, which is used for preventing the gas water heater from being started by mistake, and is implemented according to the following steps: s1, collecting water inlet pressure P of a water inlet of a gas water heater in real time Inflow of water The method comprises the steps of carrying out a first treatment on the surface of the S2, the water inlet pressure P in the S1 is controlled Inflow of water Matching with preset starting flow of the gas water heater to calculate the current starting flow V under the water inlet pressure Starting up The method comprises the steps of carrying out a first treatment on the surface of the S3, collecting water flow V on main water pipeline of gas water heater in real time Hot water According to water flow V Hot water And the startup flow V in the S2 Starting up Determining whether the zero cold water gas water heater is on; the invention also discloses a gas water heater. The invention solves the problem of incorrect starting of the gas water heater by matching the adaptive starting flow according to the water inlet pressure.
Description
Technical Field
The invention belongs to the technical field of gas water heaters, and particularly relates to a control method of a zero-cold water gas water heater and the zero-cold water gas water heater.
Background
At present, the waterway installation mode of the zero-cooling water gas water heater has two types: one is a three-pipe scheme with a cold water pipe, a hot water pipe and a return water pipe; in addition, the two-pipe scheme only comprises a cold water pipe and a hot water pipe, and a one-way valve is additionally arranged at the washing table at the far water end to be communicated with the cold water pipe and the hot water pipe for preventing hot water from flowing back. Aiming at the two-pipe scheme, the working principle of the zero cold water gas water heater is as follows: starting a preheating function in a water-off state, driving cold and hot water pipe water storage circulation flow by an internal circulating pump, and starting up to ignite and preheat when the circulation flow is larger than the starting-up flow; when the circulating preheating is carried out, the cold water pipe water storage flows into the water heater, flows into the hot water pipe after being heated, and flows back into the cold water pipe again through the one-way valve.
However, because the two-pipe scheme of the zero-cold water heater is communicated with the cold water pipe and the hot water pipe through the zero-cold water one-way valve, when a cold water faucet of a washing table, a water closet, shower cold water or a washing machine is opened, most tap water flows to a water consumption point through the cold water pipe, and a small part of tap water flows through the water heater, the hot water pipe and the zero-cold water one-way valve and then flows to the water consumption point respectively, wherein the ratio of hot water diversion and cold water diversion is close to 1/3, and the starting flow of the zero-cold water gas water heater in the market is generally 2.5L/min; when the tap water pressure is 0.1MPa and the water flow reaches more than 10L/min, the split water quantity of the hot water pipe exceeds the starting flow of the water heater, so that the water heater is started up by mistake and is ignited.
Disclosure of Invention
In order to solve the problems, the invention provides a control method of a zero cold water gas water heater, which is used for solving the problem of incorrect starting of the gas water heater according to the starting flow matched and adapted by the water inlet pressure.
Another object of the present invention is to provide a zero cold water gas water heater.
The technical scheme adopted by the invention is as follows:
a control method of a zero cold water gas water heater is used for preventing the gas water heater from being started by mistake, and is implemented according to the following steps:
s1, collecting water inlet pressure P of a water inlet of a gas water heater in real time Inflow of water ；
S2, the water inlet pressure P in the S1 is controlled Inflow of water Matching with preset starting flow of the gas water heater to calculate the current starting flow V under the water inlet pressure Starting up ；
S3, collecting water flow V on main water pipeline of gas water heater in real time Hot water According to water flow V Hot water And the startup flow V in the S2 Starting up And determining whether the zero cold water gas water heater is on.
Preferably, in S3, according to water flow V Hot water And the startup flow V Starting up The relation of (1) determining whether the zero cold water gas water heater is started or not, specifically comprises:
when V is Hot water ＜V Starting up When the gas water heater is not started;
when V is Hot water ≥V Starting up When the gas water heater is started.
Preferably, the water pressure P of the inlet water is in the S2 Inflow of water Matching with preset starting flow of the gas water heater to calculate the current starting flow V under the water inlet pressure Starting up The method specifically comprises the following steps:
according to the water pressure P of the inlet water Inflow of water With minimum water pressure P min And a maximum water pressure P max The relation between the two determines the starting flow V Starting up 。
Preferably, the water pressure P is based on the water inlet pressure Inflow of water With minimum water pressure P min And a maximum water pressure P max The relation between the two determines the starting flow V Starting up The method specifically comprises the following steps:
when P Inflow of water ≤P min V at the time of Starting up ＝V min ；
When P Inflow of water ≥P max V at the time of Starting up ＝V max ；
When P min ＜P Inflow of water ＜P max V at the time of Starting up ＝V min +(P Inflow of water -P min )*(V max -V min )/(P max -P min )；
Wherein V is min For the lowest start-up flow, V max Is the highest startup flow.
Preferably, the minimum startup flow V min The range of the values is as follows: v is less than or equal to 2.4L/min min ≤2.6L/min。
Preferably, the highest startup flow V max The range of the values is as follows: v is not less than 4.9L/min max ≤5.1L/min。
The zero cold water gas water heater is characterized by comprising a gas water heater body, a circulating pump, a water flow acquisition unit, a water pressure acquisition unit, a controller, a cold water pipe, a hot water pipe and a water consumption end, wherein the circulating pump, the water flow acquisition unit and the water pressure acquisition unit are all arranged on a main water path in the gas water heater body and are all connected with the controller, one end of the cold water pipe is connected with a water source, the other end of the cold water pipe is connected with the water consumption end, one end of the hot water pipe is connected with the gas water heater body, and the other end of the hot water pipe is connected with the water consumption end.
Preferably, the water flow collection unit comprises a water flow sensor.
Preferably, the water pressure collecting unit includes a water pressure sensor.
Preferably, the other ends of the cold water pipe and the hot water pipe are connected through a one-way valve, and the one-way valve is connected with the water use end in parallel and used for preventing hot water from flowing back.
Compared with the prior art, when the water supply device is used, firstly, the water inlet pressure of the water inlet of the gas water heater is collected in real time, the water inlet pressure is matched with the preset starting flow of the gas water heater, the starting flow of the current water inlet pressure is calculated, then, the water flow on the main water pipeline of the gas water heater is collected in real time, and whether the zero-cooling water gas water heater is started or not is determined according to the relation between the water flow and the starting flow; the problem of incorrect start-up of the gas water heater is solved by matching the adaptive start-up flow according to the water inlet pressure.
Drawings
FIG. 1 is a flow chart of a control method of a zero cold water gas water heater provided in embodiment 1 of the invention;
FIG. 2 is a graph showing the matching relationship between the start-up flow and the water inlet pressure in the control method of the zero-cooling water gas water heater according to the embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a gas water heater according to embodiment 2 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be clearly understood that terms such as "vertical", "horizontal", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "horizontal", and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present invention, and do not mean that the apparatus or element referred to must have a specific orientation or position, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The embodiment 1 of the invention provides a control method of a zero cold water gas water heater, which is shown in fig. 1-2 and is used for preventing the gas water heater from being started by mistake, and is implemented according to the following steps:
s1, collecting water inlet pressure P of a water inlet of a gas water heater in real time Inflow of water ；
Specifically, the water pressure sensor arranged at the water inlet of the gas water heater is used for detecting;
s2, the water inlet pressure P in the S1 is controlled Inflow of water Matching with preset starting flow of the gas water heater to calculate the current starting flow V under the water inlet pressure Starting up ；
Specifically, according to the water pressure P Inflow of water With minimum water pressure P min And a maximum water pressure P max The relation between the two determines the starting flow V Starting up ：
When P Inflow of water ≤P min V at the time of Starting up ＝V min ；
When P Inflow of water ≥P max V at the time of Starting up ＝V max ；
When P min ＜P Inflow of water ＜P max V at the time of Starting up ＝V min +(P Inflow of water -P min )*(V max -V min )/(P max -P min )；
Wherein V is min For the lowest start-up flow, V max Is the highest startup flow.
The minimum startup flow V min The range of the values is as follows: v is less than or equal to 2.4L/min min Less than or equal to 2.6L/min, preferably 2.5L/min.
The highest startup flow V max The range of the values is as follows: v is not less than 4.9L/min max Less than or equal to 5.1L/min, preferably 5.0L/min.
S3, collecting water flow V on main water pipeline of gas water heater in real time Hot water According to water flow V Hot water And the startup flow V in the S2 Starting up Determining whether the zero cold water gas water heater is on;
specifically:
when V is Hot water ＜V Starting up When the gas water heater is not started;
when V is Hot water ≥V Starting up When the gas water heater is started.
In addition, the water flow V on the main water pipeline Hot water Water flow V on cold water pipe Cold water The ratio of water was about 1:3.
The beneficial effects of this embodiment are:
the higher the water inlet pressure is, the larger the cold water flow is, when a user uses the washing table or washes the closestool, the larger the hot water split flow is, and the hot water split flow (namely the water flow) is easy to be caused, V Hot water ＞V Starting up The controller automatically matches the larger starting flow according to the water inlet pressure, so that the hot water is split into flow (V) Hot water ) < startup flow (V) Starting up ) The false start of the water heater is avoided;
when the water pressure sensor detects that the water inlet pressure is lower, the system sets the starting-up flow to be the lowest starting-up flow (V) according to a program min ) Ensuring that the water heater can normally operate; similarly, when the water pressure sensor detects that the water inlet pressure is higher, the system is according to the processSequentially setting the boot flow rate to the highest boot flow rate (V) max ) The problem that a user can normally use the water heater and can avoid the false ignition start of the water heater is solved;
in addition, the minimum startup flow V min And the highest startup flow V max Can be adjusted according to the actual condition of the waterway of the user so as to meet the bathing requirements of the user in different waterway conditions in different areas.
Example 2
The embodiment 2 of the invention provides a zero cold water gas water heater, which comprises a gas water heater body 1, a circulating pump 2, a water flow collecting unit 3, a water pressure collecting unit 4, a controller 5, a cold water pipe 6, a hot water pipe 7 and a water using end 8, wherein the circulating pump 2, the water flow collecting unit 3 and the water pressure collecting unit 4 are all arranged on a main water path in the gas water heater body 1 and are all connected with the controller 5, one end of the cold water pipe 6 is connected with a water source, the other end of the cold water pipe is connected with the water using end 8, one end of the hot water pipe 7 is connected with the gas water heater body 1, and the other end of the hot water pipe 7 is connected with the water using end 8.
The water flow acquisition unit 3 comprises a water flow sensor.
The water pressure acquisition unit 4 comprises a water pressure sensor.
The other ends of the cold water pipe 6 and the hot water pipe 7 are connected through a one-way valve 9, and the one-way valve 9 is connected with the water use end 8 in parallel and is used for preventing hot water from flowing back.
The working process of the embodiment is as follows:
firstly, a water pressure sensor collects water inlet pressure of a water inlet of a gas water heater in real time and transmits the water inlet pressure to a controller 5, and the controller 5 matches the starting-up flow at the current water pressure according to the preset relation between the water inlet pressure and the starting-up flow; and then, the water flow sensor collects the water flow on the main water pipeline of the gas water heater in real time, when the water flow is smaller than the starting flow, the gas water heater is not started, and otherwise, the gas water heater is started.
According to the embodiment, the problem of false start of the gas water heater is solved by matching the adaptive start-up flow according to the water inlet pressure.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (8)
1. The control method of the zero cold water gas water heater is characterized by being used for preventing the gas water heater from being started by mistake and is implemented according to the following steps:
s1, collecting water inlet pressure P of a water inlet of a gas water heater in real time Inflow of water ；
S2, the water inlet pressure P in the S1 is controlled Inflow of water Matching with preset starting flow of the gas water heater to calculate the current starting flow V under the water inlet pressure Starting up The method comprises the steps of carrying out a first treatment on the surface of the The method specifically comprises the following steps:
according to the water pressure P of the inlet water Inflow of water With minimum water pressure P min And a maximum water pressure P max The relation between the two determines the starting flow V Starting up The method comprises the steps of carrying out a first treatment on the surface of the Namely:
when P Inflow of water ≤P min V at the time of Starting up ＝V min ；
When P Inflow of water ≥P max V at the time of Starting up ＝V max ；
When P min ＜P Inflow of water ＜P max V at the time of Starting up ＝V min +(P Inflow of water -P min )*(V max -V min )/(P max -P min )；
Wherein V is min For the lowest start-up flow, V max The highest startup flow is obtained;
s3, collecting water flow V on main water pipeline of gas water heater in real time Hot water According to water flow V Hot water And the startup flow V in the S2 Starting up And determining whether the zero cold water gas water heater is on.
2. A zero cooling according to claim 1The control method of the water and gas water heater is characterized in that in the step S3, the water flow V is used for controlling the water and gas water heater Hot water And the startup flow V Starting up The relation of (1) determining whether the zero cold water gas water heater is started or not, specifically comprises:
when V is Hot water ＜V Starting up When the gas water heater is not started;
when V is Hot water ≥V Starting up When the gas water heater is started.
3. The control method of a zero cold water gas water heater according to claim 1, wherein the minimum start-up flow V min The range of the values is as follows: v is less than or equal to 2.4L/min min ≤2.6L/min。
4. The control method of a zero cold water gas water heater according to claim 1, wherein the highest start-up flow V max The range of the values is as follows: v is not less than 4.9L/min max ≤5.1L/min。
5. The control method of the zero-cold water gas water heater is characterized by comprising a gas water heater body (1), a circulating pump (2), a water flow acquisition unit (3), a water pressure acquisition unit (4), a controller (5), a cold water pipe (6), a hot water pipe (7) and a water use end (8), wherein the circulating pump (2), the water flow acquisition unit (3) and the water pressure acquisition unit (4) are all arranged on a main water path in the gas water heater body (1) and are all connected with the controller (5), one end of the cold water pipe (6) is connected with a water source, the other end of the cold water pipe is connected with the water use end (8), one end of the hot water pipe (7) is connected with the gas water heater body (1), and the other end of the cold water pipe is connected with the water use end (8).
6. A zero cold water gas water heater according to claim 5, wherein the water flow collection unit (3) comprises a water flow sensor.
7. A zero cold water gas water heater according to claim 6, wherein the water pressure acquisition unit (4) comprises a water pressure sensor.
8. A zero cold water gas water heater according to any one of claims 5-7, wherein the cold water pipe (6) and the hot water pipe (7) are connected at their other ends by a one-way valve (9), said one-way valve (9) being arranged in parallel with the water-consuming end (8) for preventing backflow of hot water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911088361.5A CN110806012B (en) | 2019-11-08 | 2019-11-08 | Control method of zero-cooling water gas water heater and zero-cooling water gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911088361.5A CN110806012B (en) | 2019-11-08 | 2019-11-08 | Control method of zero-cooling water gas water heater and zero-cooling water gas water heater |
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| CN110806012A CN110806012A (en) | 2020-02-18 |
| CN110806012B true CN110806012B (en) | 2023-12-19 |
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| CN201911088361.5A Active CN110806012B (en) | 2019-11-08 | 2019-11-08 | Control method of zero-cooling water gas water heater and zero-cooling water gas water heater |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701358B (en) * | 2021-08-27 | 2023-02-21 | 广东万和新电气股份有限公司 | Water heater and control method thereof |
| CN113701361B (en) * | 2021-09-06 | 2023-01-24 | 珠海格力电器股份有限公司 | Starting method and device of water heater and water heater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE860153A (en) * | 1976-11-29 | 1978-02-15 | Greenwace Ltd | OIL BURNER |
| CN207335195U (en) * | 2017-09-30 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of gas heater |
| CN109595820A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of control method of gas heater and the gas heater of application this method |
-
2019
- 2019-11-08 CN CN201911088361.5A patent/CN110806012B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE860153A (en) * | 1976-11-29 | 1978-02-15 | Greenwace Ltd | OIL BURNER |
| CN207335195U (en) * | 2017-09-30 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of gas heater |
| CN109595820A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of control method of gas heater and the gas heater of application this method |
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| CN110806012A (en) | 2020-02-18 |
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