CN104456970A - Method for controlling maximum boiled water flow of rapid-heating water boiler without water tank - Google Patents
Method for controlling maximum boiled water flow of rapid-heating water boiler without water tank Download PDFInfo
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Abstract
The invention discloses a method for controlling the maximum boiled water flow of a rapid-heating water boiler without a water tank. The method comprises the following steps of installation and connection, preheating start, data acquisition, maximum flow computing and water flow closed-loop regulation, wherein in the step of maximum flow computing, according to collected water intake temperature data and power data of an electric heater, a master controller computes the maximum boiled water flow according to the following formula that V=P*860<T2-T1>*mu, V is the maximum boiled water flow (L/h), P is the heating power (KW) of the electric heater, T1 is the water inlet temperature (DEG C), T2 is the water outlet temperature which is 100 DEG C, and mu is 95% of heating efficiency; in the step of water flow closed-loop regulation, the master controller regulates the opening state of a water flow regulating valve according to comparison between the maximum boiled water flow computed through the step D and the real measured water flow, so that the real water flow and the computed maximum boiled water flow are consistent. The method achieves rapid heating and meets the requirement for drinking water, and use is convenient.
Description
Technical field
The present invention relates to a kind of boiling water maximum stream flow control method of cistern free Fast Heating boiled water machine.
Background technology
Along with the raising of living standards of the people, water dispenser has been daily necessities indispensable in life, and people are more and more stricter to the requirement of drinking water, and it directly affects the health of people, therefore, for the weak point of present water dispenser, needs to improve water dispenser.
It is CN103948324A that State Intellectual Property Office discloses publication number on July 30th, 2014, patent name is a kind of Patent Application Publication of water fountain effluent temperature-controlled process, it provides one with hot water water storage tank body, cold water water storage tank body and the water dispenser being watered tank body, and described hot water water storage tank body, cold water water storage tank body and be watered tank body and be equipped with temperature sensor for measuring water temperature in tank body; When user inputs a demand water temperature, MCU controls hot water water storage tank body delivery port according to the water temperature data of each temperature sensor Real-time Collection and cold water water storage tank body delivery port flow to the water yield being watered tank body; Relatively be watered water temperature and the demand water temperature of tank body, judge whether hot water water storage tank body or cold water water storage tank body continue water outlet; When the water temperature being watered tank body equals demand water temperature, stop the water outlet of hot water water storage tank body and cold water water storage tank body, and the water that control is watered in tank body flows out through the faucet be arranged on water dispenser.Present invention achieves the whole-process control of the process of being watered, at the equal set temperature sensor of each tank body, accelerate and be watered speed; And can realize from main control Drinking Water Temperature.
Above-mentioned control method is obviously different from the control method of present patent application.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, a kind of boiling water maximum stream flow control method of cistern free Fast Heating boiled water machine is provided, the method heating is fast, non-secondary pollution, meet potable water guidelines, and facilitate use.
For achieving the above object, the technical solution adopted in the present invention is:
A boiling water maximum stream flow control method for cistern free Fast Heating boiled water machine, comprises the following steps:
A, installation connect: the water inlet end of the water pipeline in cistern free Fast Heating boiled water machine is directly connected with running water pipe or is connected with running water pipe by clarifier;
B, open before preheat: open electrically-controlled valve after the thermoelectric heating device in this boiled water machine being preheated 2-3 second;
C, data acquisition: utilize master controller to gather the power data of thermoelectric heating device by thermoelectric heating device power sensor, inflow temperature data are gathered by inflow temperature sensor, gather the water flow data in water pipeline by water ga(u)ge, gather actual leaving water temperature data by leaving water temperature sensors;
D, maximum stream flow calculate: master controller, according to the power data of the inflow temperature data collected and thermoelectric heating device, utilizes the maximum stream flow of following formulae discovery boiling water:
V=P × 860 ÷ (T2-T1) × μ, wherein, V is the maximum stream flow (L/h) of boiling water; P is the heating power (KW) of thermoelectric heating device; T1 is inflow temperature (DEG C); T2 is leaving water temperature, is 100 DEG C; μ is the efficiency of heating surface, is 95%;
The closed-loop adjustment of E, discharge: the boiling water maximum stream flow that master controller is calculated by step D and the actual discharge recorded compare, the opening of Water flow adjusting valve is regulated, makes actual discharge consistent with the boiling water maximum stream flow calculated.
Further, described thermoelectric heating device is by metal plate-like cavity body and is coated in the insulating lacquer layer on metal plate-like cavity body surface and heating film successively and fires and form.
Further, described water ga(u)ge adopts vane flowmeter, ultrasonic flowmeter or electromagnetic flowmeter.
Further, described water regulating valve adopts stepper motor control valve, reducing motor control valve, ball valve control valve, ceramics control valve or cut-off control valve.
Beneficial effect of the present invention: owing to adopting above-mentioned boiling water maximum stream flow control method, user can obtain the drinking water of 100 DEG C fast, meets the instructions for use of consumer.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is flow chart of the present invention;
Fig. 2 is the structural representation of cistern free Fast Heating boiled water machine.
In figure: 1, water purification filter system; 2, master controller; 3, thermoelectric heating device; 4, thermoelectric heating device power sensor; 5, water ga(u)ge; 6, electrically-controlled valve; 7, water regulating valve; 8, inflow temperature sensor; 9, leaving water temperature sensors; 10, water inlet manually-operated gate; 11, water inlet pipe mouth; 12, effluent pipe mouth; 13, water pipeline.
Detailed description of the invention
Technical scheme of the present invention is understood better in order to make those skilled in the art, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
As shown in Figure 1, a kind of boiling water maximum stream flow control method of cistern free Fast Heating boiled water machine, comprises the following steps:
A, installation connect: the water inlet end of the water pipeline in cistern free Fast Heating boiled water machine is directly connected with running water pipe or is connected with running water pipe by clarifier;
B, open before preheat: open electrically-controlled valve after the thermoelectric heating device in this boiled water machine being preheated 2-3 second;
C, data acquisition: utilize master controller to gather the power data of thermoelectric heating device by thermoelectric heating device power sensor, inflow temperature data are gathered by inflow temperature sensor, gather the water flow data in water pipeline by water ga(u)ge, gather actual leaving water temperature data by leaving water temperature sensors;
Maximum stream flow calculates: master controller is according to the power data of the inflow temperature data collected and thermoelectric heating device, utilize the maximum stream flow of following formulae discovery boiling water: V=P × 860 ÷ (T2-T1) × μ, wherein, V is the maximum stream flow (L/h) of boiling water; P is the heating power (KW) of thermoelectric heating device; T1 is inflow temperature (DEG C); T2 is leaving water temperature, is 100 DEG C; μ is the efficiency of heating surface, is 95%;
D, specific design running parameter and computing formula are as follows:
1, water regulating valve 7 design parameter
Design water regulating valve (0.6Mpa) discharge when the large intake pressure of rated capacity is 24L/h, and control valve minimum delivery port area and maximum delivery port area ratio are 1:8, and control characteristic is indicial response.Every adjusting angle 10 degree of control valve delivery port area change 20%, adjustable-angle is 120 degree, and adjusting angle speed is adjusting angle per second 20 degree.
2, thick film thermoelectric heating device 3 design parameter
Thermoelectric heating device external form is flat, and area is about 50cm
2, lumen thickness is 0.3cm
2, water chamber plate surface scribbles high-temperature insulation paint, then is coated with heating layer sintering and forms, and temperature control protection switch is installed on water chamber plate surface, and setting thick film thermoelectric heating device power is 2.2 kilowatts.
3, water ga(u)ge 5 design parameter
Revolution vane minitype water ga(u)ge selected by water ga(u)ge 5, and during current 30L/h, output pulse frequency is 30Hz.
4, flow rate calculation when leaving water temperature is 100 DEG C
Learn according to water heat capacity ratio: 1 kilowatt hour equals 860 kilocalories, through converting:
Water flow (L/h)=power (kw) × 860 ÷ raised temperature (DEG C) × efficiency (%)
Setting heating power is 2.2 kw, and inflow temperature is 25 DEG C, and leaving water temperature is 100 DEG C, and efficiency is 95%, draws:
Discharge (L/h)=2.2 × 860 ÷ (100-25) × 95% ≈ 24L/h
5, water regulating valve minimum delivery port area and maximum delivery port areal calculation formula
Designing specified discharge is 24L/h, and minimum intake pressure is (0.01Mpa), and maximum intake pressure is (0.6Mpa)
learn according to the relational expression (thin wall small hole) between flow, flow velocity, sectional area, hydraulic pressure:
In formula: Q---flow, unit: m3/S
μ---discharge coefficient, relevant with the shape of valve or pipe; 0.6 ~ 0.65
A---area, unit: m2
△ P---by the pressure differential before and after valve, unit: Pa,
The density of ρ---fluid, unit: Kg/m3;
Setting discharge (L/h) be 24L/h, calculate water regulating valve minimum delivery port area water and be less than 0.3mm2, maximum delivery port area for being greater than 2.5mm2,
E, discharge regulate: the boiling water maximum stream flow that master controller is calculated by step D and the actual discharge recorded are entered
Row compares, the opening of Water flow adjusting valve is regulated, make actual discharge consistent with the boiling water maximum stream flow calculated, this process is a closed-loop adjustment, opening due to water regulating valve 7 is the state used in last time, the output variation in water pressure of running water and water purification filter system is little, and adjustment process can be able to complete within 1-2 second.Can guarantee that leaving water temperature reaches setting requirement like this.
In addition, owing to being provided with water purification filter system, the adjustable leaving water temperature of the present embodiment, method is the open degree increasing water regulating valve, increases water yield, reduces leaving water temperature, makes leaving water temperature meet setting requirement.The data such as leaving water temperature and the water yield are inputted during concrete use, after pressing out start button, heating element opened by master controller, after heating element reaches uniform temperature (2-3 second), open electrically-controlled valve, master board is simultaneously by calculating data such as inflow temperature, leaving water temperature, discharge, thermoelectric heating device power, Bound moisture heat capacity ratio parameter, the open degree of closed-loop adjustment water regulating valve, makes water outlet reach the temperature of user's setting fast.
As shown in Figure 2, a kind of cistern free Fast Heating boiled water machine, it does not establish storage tank, primarily of master controller 2, thermoelectric heating device power sensor 4, water pipeline 13 and the inflow temperature sensor 8 be located on water pipeline 13, electrically-controlled valve 6, water regulating valve 7, water ga(u)ge 5, thermoelectric heating device 3 and leaving water temperature sensors 9 are formed, master controller 2 is in order to gather thermoelectric heating device power sensor 4, inflow temperature sensor 8, the data of water ga(u)ge 5 and leaving water temperature sensors 9 to thermoelectric heating device 3, electrically-controlled valve 6 carries out switch control rule, regulable control is carried out to water regulating valve 7.Water regulating valve adopts stepper motor control valve, reducing motor control valve, ball valve control valve, ceramics control valve or cut-off control valve.
In a word; those skilled in the art although the present invention lists above-mentioned preferred embodiment, should illustrate, although can carry out various change and remodeling; unless such change and remodeling deviate from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (4)
1. a boiling water maximum stream flow control method for cistern free Fast Heating boiled water machine, comprises the following steps:
Steps A, installation connect: the water inlet end of the water pipeline in cistern free Fast Heating boiled water machine is directly connected with running water pipe or is connected with running water pipe by clarifier;
Step B, open before preheat: open electrically-controlled valve after the thermoelectric heating device in this boiled water machine being preheated 2-3 second;
Step C, data acquisition: utilize master controller to gather the power data of thermoelectric heating device by thermoelectric heating device power sensor, inflow temperature data are gathered by inflow temperature sensor, gather the water flow data in water pipeline by water ga(u)ge, gather actual leaving water temperature data by leaving water temperature sensors;
Step D, maximum stream flow calculate: master controller, according to the power data of the inflow temperature data collected and thermoelectric heating device, utilizes the maximum stream flow of following formulae discovery boiling water:
V=P × 860 ÷ (T2-T1) × μ, wherein, V is the maximum stream flow (L/ h) of boiling water; P is the heating power (KW) of thermoelectric heating device; T1 is inflow temperature (DEG C); T2 is leaving water temperature, is 100 DEG C; μ is the efficiency of heating surface, is 95%;
The closed-loop adjustment of step e, discharge: the boiling water maximum stream flow that master controller is calculated by step D and the actual discharge recorded compare, the opening of Water flow adjusting valve is regulated, makes actual discharge consistent with the boiling water maximum stream flow calculated.
2. the boiling water maximum stream flow control method of a kind of cistern free Fast Heating boiled water machine according to claim 1, it is characterized in that: in described step B, thermoelectric heating device is by metal plate-like cavity body and is coated in the insulating lacquer layer on metal plate-like cavity body surface and heating film successively and fires and form.
3. the boiling water maximum stream flow control method of a kind of cistern free Fast Heating boiled water machine according to claim 1, is characterized in that: in described step C, and described water ga(u)ge adopts vane flowmeter, ultrasonic flowmeter or electromagnetic flowmeter.
4. the boiling water maximum stream flow control method of a kind of cistern free Fast Heating boiled water machine according to claim 1, it is characterized in that: in described, described water regulating valve adopts stepper motor control valve, reducing motor control valve, ball valve control valve, ceramics control valve or cut-off control valve.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642719A (en) * | 2016-11-17 | 2017-05-10 | 佛山市云米电器科技有限公司 | High-flow water fetching and temperature adjusting method of water heater |
| CN106859339A (en) * | 2017-03-29 | 2017-06-20 | 佛山市南海区三谷里电子电器有限公司 | A kind of water dispenser of safety and sanitation |
| CN107367052A (en) * | 2012-07-17 | 2017-11-21 | 伊麦克斯公司 | Fluid heating system and instant fluid heating |
| CN110186195A (en) * | 2018-05-22 | 2019-08-30 | 华帝股份有限公司 | Control method and control system of gas water heater |
| CN110638328A (en) * | 2019-10-25 | 2020-01-03 | 四川长虹电器股份有限公司 | Self-adaptive heating method of intelligent instant heating type direct drinking machine |
| CN114014483A (en) * | 2021-11-22 | 2022-02-08 | 杭州老板电器股份有限公司 | Water outlet device and water outlet control method thereof |
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| CN110638328B (en) * | 2019-10-25 | 2021-05-28 | 四川长虹电器股份有限公司 | Self-adaptive heating method of intelligent instant heating type direct drinking machine |
| CN114014483A (en) * | 2021-11-22 | 2022-02-08 | 杭州老板电器股份有限公司 | Water outlet device and water outlet control method thereof |
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