CN109237799B - Control method of gas water heater - Google Patents
Control method of gas water heater Download PDFInfo
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- CN109237799B CN109237799B CN201810904150.3A CN201810904150A CN109237799B CN 109237799 B CN109237799 B CN 109237799B CN 201810904150 A CN201810904150 A CN 201810904150A CN 109237799 B CN109237799 B CN 109237799B
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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
Abstract
The invention discloses a control method of a gas water heater, which is characterized by comprising the following steps of: 1) setting starting water flow; 2) setting working water flow; 3) when the gas water heater is ignited and started; if the starting water flow is less than the working water flow, firstly, working is carried out by the starting water flow, and when the outlet water temperature reaches a set temperature, the working water flow is switched to work; if the starting water flow is not less than the working water flow, directly working with the working water flow; corresponding to the starting water flow, a first gas flow matched with the starting water flow is provided, and the first gas flow is used for heating the starting water flow to a set temperature; and the working water flow rate is matched with a second fuel flow rate, and the second fuel flow rate is used for heating the working water flow rate to a set temperature. The invention ensures that the gas water heater consumes less water and gas when being started and can quickly ensure that the outlet water temperature reaches the set temperature.
Description
Technical Field
The invention relates to the technical field of fluid heater control, in particular to a control method of a gas water heater.
Background
The gas water heater is generally installed in a kitchen or a living balcony and is far away from a bathroom. After the water valve switch of the gas water heater is opened, water heated by the gas water heater can reach a water consumption point only through a long waterway, and low-temperature water with the temperature lower than the temperature required by a user is unavailable, so that waste of water resources and gas resources is inevitably caused. When a user uses hot water, the water valve is frequently opened/closed for many times, and a large amount of cold water and warm water and fuel gas are wasted when the water valve is opened every time.
Although the gas water heater with the circulating pump in the market at present can achieve the effect of zero cold water and avoid the waste of the cold water, the gas water heater has the defects of high gas consumption, high product cost and the like due to the preheating function, and is difficult to popularize and apply.
Disclosure of Invention
The invention aims to provide a control method of a gas water heater, which consumes less water and gas and can quickly make the outlet water temperature reach the set temperature.
In order to achieve the purpose, the invention adopts the following technical scheme.
A control method of a gas water heater is characterized by comprising the following steps:
1) setting starting water flow;
2) setting working water flow;
3) when the gas water heater is ignited and started; if the starting water flow is less than the working water flow, firstly, working is carried out by the starting water flow, and when the outlet water temperature reaches a set temperature, the working water flow is switched to work; if the starting water flow is not less than the working water flow, directly working with the working water flow; corresponding to the starting water flow, a first gas flow matched with the starting water flow is provided, and the first gas flow is used for heating the starting water flow to a set temperature; and the working water flow rate is matched with a second fuel flow rate, and the second fuel flow rate is used for heating the working water flow rate to a set temperature.
As a further explanation of the above scheme, the starting water flow is a fixed value and is stored in the main controller of the gas water heater.
As a further explanation of the above solution, the setting of the flow rate of the working water is realized by an operation display connected to the main controller of the gas water heater.
As a further explanation of the scheme, the outlet water temperature is measured in real time by a temperature sensor arranged at the water outlet of the gas water heater.
As a further explanation of the above solution, the switching between the starting water flow and the working water flow is realized by adjusting the opening of a water proportional valve installed on a water inlet pipeline or a water outlet pipeline of the gas water heater.
As a further explanation of the above solution, the switching between the first gas flow rate and the second gas flow rate is realized by adjusting the opening degree of a gas proportional valve.
As a further explanation of the above scheme, the first gas flow is calculated from the inlet water temperature, the set temperature and the starting water flow.
As a further illustration of the above solution, the second fuel flow rate is calculated from the feed water temperature, the set temperature and the working water flow rate.
As a further explanation of the scheme, the water inlet temperature is measured in real time by a water inlet temperature sensor arranged on a water inlet pipe of the gas water heater.
As a further illustration of the scheme, the starting water flow is 30-60% of the hot water yield of the gas water heater.
The invention has the beneficial effects that:
when the gas water heater is ignited and started, a starting water flow working link smaller than working water flow is added, the gas water heater is not added, the user can automatically save energy in the water using process under the condition that the cost of the gas water heater is not increased, water and gas are saved, the gas water heater is more environment-friendly, the duration time of warm water is shortened, the waiting time of the user for water use is shortened, and the comfortable experience of the user for water use is improved.
Drawings
Fig. 1 is a schematic structural diagram of a gas water heater provided by the invention.
Fig. 2 is a flow chart illustrating a control method of a conventional gas water heater.
Fig. 3 is a flow chart of a control method of a gas water heater provided by the invention.
Description of reference numerals:
1: main controller, 2: operation display, 3: outlet water temperature sensor, 4: temperature sensor of intaking, 5: water proportional valve, 6: and adjusting a gas proportional valve.
Detailed Description
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the present invention, unless otherwise specified and limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.
The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary and are intended to be illustrative of the invention, but are not to be construed as limiting the invention.
A control method of a gas water heater is characterized by comprising the following steps:
1) set the starting water flow.
2) The working water flow is set.
3) When the gas water heater is ignited and started; if the starting water flow is less than the working water flow, firstly, working is carried out by the starting water flow, and when the outlet water temperature reaches a set temperature, the working water flow is switched to work; if the starting water flow is not less than the working water flow, directly working with the working water flow; corresponding to the starting water flow, a first gas flow matched with the starting water flow is provided, and the first gas flow is used for heating the starting water flow to a set temperature; and the working water flow rate is matched with a second fuel flow rate, and the second fuel flow rate is used for heating the working water flow rate to a set temperature.
As shown in fig. 1, the starting water flow is a constant value and is stored in the main controller 1 of the gas water heater, which can simplify the program calculation, shorten the operation time of the main controller, and accelerate the output of hot water. The first gas flow is calculated by the main controller 1 according to the inlet water temperature, the set temperature and the starting water flow. The second fuel flow is calculated by the main controller 1 according to the inlet water temperature, the set temperature and the working water flow. The working water flow is set through an operation display connected with the main controller of the gas water heater. The water outlet temperature is measured in real time by a water outlet temperature sensor 3 arranged at the water outlet of the hot-gas water heater. The water inlet temperature is measured in real time by a water inlet temperature sensor 4 arranged on a water inlet pipe of the gas water heater. The switching between the starting water flow and the working water flow is realized by adjusting the opening degree of a water proportional valve 5 arranged on a water inlet pipeline (or a water outlet pipeline) of the gas water heater. The switching between the first gas flow and the second gas flow is realized by adjusting the opening degree of the gas proportional valve 6.
The starting water flow is 30-60% of the hot water yield of the gas water heater, so that the influence on water comfort caused by overlarge temperature fluctuation when the starting water flow is switched with the set water flow is avoided.
For example, in one embodiment, when the hot water yield of the gas water heater is less than or equal to 16kg/min, the water flow is started to take 6 kg/min. In another embodiment, when the hot water yield of the gas water heater is more than 16kg/min, the water flow is started to take 9 kg/min. Through a large amount of practical use data verification, when the starting water flow is switched under the limited conditions, although the water temperature fluctuates, the fluctuation range can be controlled within +/-3 ℃. Since this is the stage when the user just begins to adapt to the hot water temperature, this fluctuation does not affect the user experience at all.
As shown in fig. 2, in the conventional art, after a user opens a shower head, a gas water heater is started, and a main controller is started according to the current inlet water temperature T1DEG C, user set temperature T2DEG C, current water flow VWater (W)Calculating directly according to the required gas quantity VQi (Qi)Outputting current required to be supplied to a gas proportional valve, and outputting T by a water heater2T is consumed before hot water, and the consumed water amount is Q DEG CWater (W)The gas amount consumed is QQi (Qi)。
As shown in fig. 3, the present embodiment provides a method for controlling a gas water heater, which uses a main controller and a water proportional valve to control Q consumed in each starting stage of the water heaterWater (W)、QQi (Qi)It is divided into two stages. After the gas water heater is started and ignited, the main controller calculates and adjusts the water proportional valve stepping motor to reduce the water flow, and the water flow is V at the momentWater 1According to VWater 1Proportioning input gas flow VGas 1Gas water heater output T2The hot water with the temperature of DEG C is reduced in water flow, so that the duration time of the hot water (the hot water with the temperature lower than the temperature required by a user) is effectively shortened, the temperature of the water outlet of the gas water heater quickly reaches the set temperature, the hot water requirement of the user is met in advance, and the water using waiting time of the user is shortened. The process takes t1 and the water consumption is QWater 1The gas amount consumed is QGas 1. Then the water proportional valve stepping motor is adjusted again, and the water flow is VWater 2According to VWater 2Proportioning input gas flow VGas 2Water heater output T2Hot water at deg.C, which takes t 2.
Due to VWater 1＜VWater (W)T1 is less than t, so Q water 1 is less than Q water, and the water-saving effect is achieved; and due to VGas 1＜VQi (Qi)T1 < t, so QGas 1＜QQi (Qi)Thereby achieving the effect of saving fuel gas.
It will be appreciated by those skilled in the art from the foregoing description of construction and principles that the invention is not limited to the specific embodiments described above, and that modifications and substitutions based on the teachings of the art may be made without departing from the scope of the invention as defined by the appended claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.
Claims (10)
1. A control method of a gas water heater is characterized by comprising the following steps:
1) setting starting water flow;
2) setting working water flow;
3) when the gas water heater is ignited and started; if the starting water flow is less than the working water flow, firstly, working is carried out by the starting water flow, and when the outlet water temperature reaches a set temperature, the working water flow is switched to work; if the starting water flow is not less than the working water flow, directly working with the working water flow; corresponding to the starting water flow, a first gas flow matched with the starting water flow is provided, and the first gas flow is used for heating the starting water flow to a set temperature; and the working water flow rate is matched with a second fuel flow rate, and the second fuel flow rate is used for heating the working water flow rate to a set temperature.
2. The control method of the gas water heater according to claim 1, wherein the starting water flow is a certain value and is stored in a main controller of the gas water heater.
3. The gas water heater control method according to claim 1, wherein the setting of the flow rate of the working water is realized by an operation display connected with a main controller of the gas water heater.
4. The control method of the gas water heater as claimed in claim 1, wherein the outlet water temperature is measured in real time by a temperature sensor disposed at the outlet of the gas water heater.
5. The control method of the gas water heater as claimed in claim 1, wherein the switching between the starting water flow and the working water flow is realized by adjusting the opening degree of a water proportional valve installed on a water inlet pipeline or a water outlet pipeline of the gas water heater.
6. A gas water heater control method according to claim 1, wherein switching between said first gas flow and said second gas flow is achieved by adjusting an opening degree of a gas proportional valve.
7. The gas water heater control method of claim 1, wherein the first gas flow is calculated from an inlet water temperature, a set temperature and a start-up water flow.
8. The gas water heater control method of claim 1, wherein the second fuel gas flow rate is calculated from the inlet water temperature, the set point temperature, and the operating water flow rate.
9. The control method of the gas water heater as claimed in claim 7 or 8, wherein the inlet water temperature is measured in real time by an inlet water temperature sensor provided on the inlet pipe of the gas water heater.
10. The gas water heater control method according to claim 1, wherein the start-up water flow rate is 30-60% of the hot water yield of the gas water heater.
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| CN201810904150.3A CN109237799B (en) | 2018-08-09 | 2018-08-09 | Control method of gas water heater |
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| CN201810904150.3A CN109237799B (en) | 2018-08-09 | 2018-08-09 | Control method of gas water heater |
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| CN109237799B true CN109237799B (en) | 2020-06-05 |
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| CN110017612B (en) * | 2019-03-11 | 2021-02-26 | 华帝股份有限公司 | Constant temperature control method of gas water heater |
| CN110645714B (en) * | 2019-09-03 | 2021-12-10 | 华帝股份有限公司 | Control method of variable-rise-number gas water heater |
| CN112484312A (en) * | 2020-12-03 | 2021-03-12 | 芜湖美的厨卫电器制造有限公司 | Control method and control device for zero-cold-water gas water heater and processor |
| CN114763942B (en) * | 2021-01-15 | 2024-03-12 | 芜湖美的厨卫电器制造有限公司 | Control method, gas water heater and readable storage medium |
| CN112923553A (en) * | 2021-02-08 | 2021-06-08 | 威能(无锡)供热设备有限公司 | Gas water heating equipment and water flow control method and readable storage medium thereof |
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| CN201787733U (en) * | 2010-04-15 | 2011-04-06 | 广东万家乐燃气具有限公司 | Gas water heater control system with controllable water use mode |
| CN202581831U (en) * | 2012-05-04 | 2012-12-05 | 樱花卫厨（中国）股份有限公司 | Device for controlling constant-temperature water discharge of gas water heater |
| CN104236109B (en) * | 2013-06-24 | 2018-01-09 | 海尔集团公司 | The control method and control device of constant temp gas water heater |
| CN104729104B (en) * | 2015-03-06 | 2017-12-19 | 芜湖美的厨卫电器制造有限公司 | The constant-temperature control method of gas heater and gas heater, device |
| CN106610134A (en) * | 2015-10-21 | 2017-05-03 | 青岛经济技术开发区海尔热水器有限公司 | Gas water heater and control method |
| ITUA20161733A1 (en) * | 2016-03-16 | 2017-09-16 | Riello Spa | WATER HEATER |
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