CN110220314A - A kind of gas heater control method and gas heater - Google Patents

A kind of gas heater control method and gas heater Download PDF

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Publication number
CN110220314A
CN110220314A CN201910507028.7A CN201910507028A CN110220314A CN 110220314 A CN110220314 A CN 110220314A CN 201910507028 A CN201910507028 A CN 201910507028A CN 110220314 A CN110220314 A CN 110220314A
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CN
China
Prior art keywords
gas heater
water
heat exchange
gas
actual measurement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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CN201910507028.7A
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Chinese (zh)
Inventor
郭灵华
郑来松
邓飞忠
仇明贵
潘叶江
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Vatti Co Ltd
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Vatti Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Vatti Co Ltd filed Critical Vatti Co Ltd
Priority to CN201910507028.7A priority Critical patent/CN110220314A/en
Publication of CN110220314A publication Critical patent/CN110220314A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices or methods
    • F24H9/2007Arrangement or mounting of control or safety devices or methods for water heaters
    • F24H9/2035Arrangement or mounting of control or safety devices or methods for water heaters for heaters using fluid combustibles

Abstract

The invention discloses a kind of gas heater control method, specifically: S1 opens the pre- heat function of gas heater in the standby state;S2, gas heater water pump are opened;S3 detects the water flow in gas heater main waterway, when water flow is greater than preset booting water flow, into S4;Otherwise the standby mode that gas heater is kept;S4, gas water heater ignition enter preheating mode;S5 detects the return water temperature of gas heater, when return water temperature is greater than preset preheating temperature, completes preheating, switches off the pump;Otherwise the working condition of the variation control gas heater by gas heater heat exchange amount;S6, when the water flow in gas heater main waterway is greater than preset shutdown water flow, gas heater maintains burning;Otherwise gas heater is flame-out to close;The invention also discloses a kind of gas heaters.The present invention can identify that user opens hot water movement and realizes quickly pass pump, reduce power consumption, embody intelligent product in warm.

Description

A kind of gas heater control method and gas heater
Technical field
The invention belongs to gas heater technical fields, and in particular to a kind of gas heater control method and gas and hot water Device.
Background technique
Current zero cold water gas heater has become water heater industrial trend because it can be realized hot water plug and play, more next It is more popular with consumers.When starting pre- heat function, the outer hot-water line of circulating pump operating driving machine built in gas heater, return pipe Water circulates and realizes preheating.
The circulation warm of conventional zero cold water gas heater is general in the market are as follows: after starting pre- heat function, in unlatching Water pump circulating-heating is set, after return water temperature reaches program preheating temperature, automatically exits from preheating mode.However, actually using When zero cold water water heater, user often opens hot water tap in turn on pump warm and uses hot water, and tap water flows into heat at this time Hydrophone makes return water temperature that program preheating temperature be not achieved always, cannot automatically exit from preheating mode, and water pump is always on to be consumed More electric power.
Summary of the invention
To solve the above-mentioned problems, the object of the present invention is to provide a kind of gas heater control method, pass through heat exchanging The detection of amount realizes that warm boiled water closes pumping function, is suitable for domestic heating water gas instantaneous water heater and dual-purpose stove.
It is a further object of the present invention to provide a kind of gas heaters.
The technical scheme adopted by the invention is that:
A kind of gas heater control method is specifically implemented in accordance with the following steps:
S1 opens the pre- heat function of gas heater in the standby state;
S2, gas heater water pump are opened;
S3 detects the water flow in gas heater main waterway, when the water flow is greater than preset booting water flow, Into S4;Otherwise the standby mode that gas heater is kept;
S4, gas water heater ignition enter preheating mode;
S5 detects the return water temperature of gas heater, when the return water temperature is greater than preset preheating temperature, completes pre- Heat switches off the pump;Otherwise the working condition of the variation control gas heater by gas heater heat exchange amount;
S6, when the water flow in gas heater main waterway is greater than preset shutdown water flow, gas heater is maintained Burning;Otherwise gas heater is flame-out to close.
Preferably, pass through the working condition of the variation control gas heater of gas heater heat exchange amount, tool in the S5 Body are as follows:
When the heat exchange variable quantity of gas heater is greater than preset heat exchange variable quantity, gas heater completes preheating, closes Close water pump;Otherwise return to S3.
Preferably, the heat exchange variable quantity of the gas heater are as follows: the heat exchange amount and last moment heat exchange amount at current time Difference, it may be assumed that
△QActual measurement=QActual measurement-QIt is former
In above formula, △ QActual measurementFor the heat exchange variable quantity of gas heater, QActual measurementFor the heat exchange amount at current time, QIt is formerFor upper a period of time The heat exchange amount at quarter.
Preferably, the heat exchange amount Q at the current timeActual measurementIt is calculated especially by following formula:
QActual measurement=(TWater outlet-TWater inlet)×VActual measurement
In above formula, TWater outletFor leaving water temperature, TWater inletFor inflow temperature, VActual measurementFor the water flow at the current time in main waterway.
Preferably, pass through the working condition of the variation control gas heater of gas heater heat exchange amount, tool in the S5 Body are as follows:
When the heat exchange change rate of gas heater is greater than preset heat exchange change rate, gas heater completes preheating, closes Close water pump;Otherwise return to S3.
Preferably, the heat exchange change rate of the gas heater are as follows: the heat exchange amount and last moment heat exchange amount at current time Difference, then the ratio with last moment heat exchange amount, it may be assumed that
△LActual measurement=(QActual measurement-QIt is former)/QIt is former
In above formula, △ LActual measurementFor the heat exchange change rate of gas heater, QActual measurementFor the heat exchange amount at current time, QIt is formerFor upper a period of time The heat exchange amount at quarter.
Preferably, the working condition for controlling gas heater in the S5 by the variation of gas heater heat exchange amount, into One step includes:
When the heat exchange variable quantity of gas heater is greater than the heat exchange variation of preset heat exchange variable quantity or gas heater When rate is greater than preset heat exchange change rate, water pump is closed;
Judge whether the water flow in gas heater main waterway is greater than preset shutdown water flow at this time, if then combustion gas Water heater maintains burning;Otherwise gas heater is flame-out to close, and is back to S2.
Preferably, the current time differs 5~15s with last moment;Preset heat exchange variable quantity is 3~10 (K*L/ min)。
A kind of gas heater using above-mentioned control method comprising water heater body, heat exchanger, water pipeline, Water flow sensing unit, inflow temperature detection unit, water pump, controller, gas control valve and leaving water temperature detection unit, it is described Heat exchanger is arranged in water heater body, and the water pipeline passes through heat exchanger, and the water flow sensing unit and water pump are equal It is arranged on water pipeline, the water inlet detection unit and leaving water temperature detection unit are separately positioned on the water inlet of water heater body End and water outlet, the water flow sensing unit, water pump, inflow temperature detection unit, gas control valve and leaving water temperature detection Unit is connect with controller.
Preferably, which further comprises display screen connected to the controller, is provided on the display screen Preheat function button.
Compared with prior art, the present invention can identify that user opens hot water movement and realizes quickly pass pump in warm, Power consumption is reduced, intelligent product is embodied;Also, the working condition that pump is closed by monitoring heat exchange amount variation control, is supervised again It surveys water flow and rejudges whether boiled water, otherwise turn on pump preheats again, avoids judging by accident, it is ensured that be fully warmed-up.
Detailed description of the invention
Fig. 1 is that the embodiment of the present invention 1 provides a kind of flow chart of gas heater control method;
Fig. 2 is that the embodiment of the present invention 2 provides a kind of flow chart of gas heater control method;
Fig. 3 is that the embodiment of the present invention 3 provides a kind of structural schematic diagram of gas heater warm operation state;
Fig. 4 is that the embodiment of the present invention 3 provides a kind of gas heater warm and opens the structural schematic diagram that hot water is.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
Embodiment 1
The embodiment of the present invention 1 provides a kind of gas heater control method, as shown in Figure 1, specific real in accordance with the following steps It applies:
S1 opens the pre- heat function of gas heater in the standby state;
S2, gas heater water pump are opened;
S3 detects the water flow in gas heater main waterway, when the water flow is greater than preset booting water flow, Into S4;Otherwise the standby mode that gas heater is kept;
S4, gas water heater ignition enter preheating mode;
S5 detects the return water temperature of gas heater, when the return water temperature is greater than preset preheating temperature, completes pre- Heat switches off the pump;Otherwise the working condition of the variation control gas heater by gas heater heat exchange amount;
By the working condition of the variation control gas heater of gas heater heat exchange amount, there are two types of implementations:
The first, specifically: when the heat exchange variable quantity of gas heater is greater than preset heat exchange variable quantity, gas and hot water Device completes preheating, switches off the pump;Otherwise return to S3;
The heat exchange variable quantity of gas heater are as follows: the heat exchange amount at current time and the difference of last moment heat exchange amount, it may be assumed that
△QActual measurement=QActual measurement-QIt is former
In above formula, △ QActual measurementFor the heat exchange variable quantity of gas heater, QActual measurementFor the heat exchange amount at current time, QIt is formerFor upper a period of time The heat exchange amount at quarter;
The heat exchange amount Q at current timeActual measurementIt is calculated especially by following formula:
QActual measurement=(TWater outlet-TWater inlet)×VActual measurement
In above formula, TWater outletFor leaving water temperature, TWater inletFor inflow temperature, VActual measurementFor the water flow at the current time in main waterway.
Second, specifically: when the heat exchange change rate of gas heater is greater than preset heat exchange change rate, gas and hot water Device completes preheating, switches off the pump;Otherwise return to S3.
The heat exchange change rate of the gas heater are as follows: the heat exchange amount at current time and the difference of last moment heat exchange amount, then With the ratio of last moment heat exchange amount, it may be assumed that
△LActual measurement=(QActual measurement-QIt is former)/QIt is former
In above formula, △ LActual measurementFor the heat exchange change rate of gas heater;
S6, when the water flow in gas heater main waterway is greater than preset shutdown water flow, gas heater is maintained Burning;Otherwise gas heater is flame-out to close.
In this embodiment, the preset heat exchange variable quantity is fixed value or is carried out by the parameter setting mode of controller Setting, and it is positive value.
Heat exchange variable quantity (the △ QActual measurement) it is equal to the difference of current actual measurement heat exchange amount and last moment heat exchange amount, i.e. △ QActual measurement =QActual measurement-QIt is former, last moment heat exchange amount is the heat exchange amount that measures before the program unit time.Work as QActual measurement> QIt is formerWhen, △ QActual measurementFor positive value, Otherwise △ QActual measurementFor negative value.
The program unit time is 5~15s.
The preset heat exchange change rate is fixed value or is set by the parameter setting mode of controller, and it is positive Value.
Heat exchange amount change rate (the △ LActual measurement) it is equal to the difference of currently actual measurement heat exchange amount and former heat exchange amount divided by original heat exchange Amount, i.e. △ LActual measurement=(QActual measurement-QIt is former)/QIt is former, former heat exchange amount is the heat exchange amount measured last moment.Work as QActual measurement> QIt is formerWhen, △ LActual measurementIt is positive Value, otherwise △ LActual measurementFor negative value.
Embodiment 2
The embodiment of the present invention 2 provides a kind of gas heater control method, as shown in Fig. 2, it is on the basis of embodiment 1 On, further comprise:
S7, when the heat exchange variable quantity of gas heater is greater than the heat exchange of preset heat exchange variable quantity or gas heater When change rate is greater than preset heat exchange change rate, water pump is closed;;
Judge whether the water flow in gas heater main waterway is greater than preset shutdown water flow at this time, if then combustion gas Water heater maintains burning;Otherwise gas heater is flame-out to close, and is back to S2.
In this way, when measuring water flow less than shutdown water flow, indicate that hot water tap is simultaneously not switched on after switching off the pump, Belong to malfunction, then it is flame-out first to close gas control valve for controller, then reopens water pump and continue to preheat, and avoids because user is of short duration It opens hot water and interrupts circulation warm, it is ensured that be fully warmed-up.
Embodiment 3
The embodiment of the present invention 3 provides a kind of gas heater, as shown in Figure 3-4:
It includes water heater body 1, heat exchanger 2, water pipeline 3, water flow sensing unit 4, inflow temperature detection unit 5, water pump 6, controller 7, gas control valve 8 and leaving water temperature detection unit 9, in which:
The heat exchanger 2 is arranged in water heater body 1, and the water pipeline 3 passes through heat exchanger 2, the water flow Sensing unit 4 and water pump 6 are arranged on water pipeline 3, the inflow temperature detection unit 5 and leaving water temperature detection unit 9 It is separately positioned on water inlet end and the water outlet of water heater body 1, the water flow sensing unit 4, water pump 6, inflow temperature detection are single Member 5, gas control valve 8 and leaving water temperature detection unit 9 are connect with controller 7;
In this way, using the above structure, after starting pre- heat function, controller 7 opens water pump 6 and carries out circulating-heating, return pipe Water flow through and flow into hot-water line after water heater is heated again, then flow to return pipe again;In warm, 7 basis of controller The difference of leaving water temperature measured by leaving water temperature detection unit 9 and preset temperature adjusts the combustion gas aperture of gas control valve 8 automatically, changes Become combusting firepower, makes leaving water temperature close to preset temperature.Leaving water temperature is basically unchanged in warm, when user opens hot water Faucet, tap water flow into water heater, then the water flow for flowing through the water flow sensing unit 4 increases suddenly, and inflow temperature detects Unit 5 measures the synchronous decline of inflow temperature;After warm user opens hot water, gas heater heat exchange amount is significantly risen, and works as survey Water-heater heat-exchanging variable quantity when being greater than preset heat exchange Sudden Changing Rate or heat exchange amount change rate greater than preset heat exchange amount mutation rate, Then controller 7 exports out code to water pump 6, switches off the pump and 6 exits preheating mode, is switched to common shower pattern, reduces electricity Power consumption.
In this embodiment, at water heater standby mode (flame-out), it is greater than when the water flow sensing unit 4 measures water flow Preset booting water flow, then controller 7 opens gas control valve 8, combustion heating of ventilating.In water heater working state ( Fire), it is less than shutdown water flow when the water flow sensing unit 4 measures water flow, then controller 7 closes gas control valve 8, stops working Shutdown;
In addition, the water inlet end of water heater connects tap water, water outlet connects hot water tap by hot-water line, on hot-water line Return pipe is set and connects water feeding of heater end, and in return pipe setting conducting direction and the consistent check valve of return water.
The gas heater further comprises the display screen 10 connecting with controller 7, is provided on the display screen 10 pre- Heat function key.
Water flow sensing unit 4 includes flow sensor in the present embodiment;Inflow temperature detection unit 5 and leaving water temperature sensing Device 9 includes temperature sensor.
The present invention can identify that user opens hot water movement and realizes quickly pass pump, reduce power consumption, body in warm Existing intelligent product;Also, the working condition that pump is closed by monitoring heat exchange amount variation control, monitors water flow again and rejudges Whether boiled water, otherwise turn on pump preheats again, avoids judging by accident, it is ensured that be fully warmed-up.
More than, it is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto, it is any In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.

Claims (10)

1. a kind of gas heater control method, which is characterized in that specifically implement in accordance with the following steps:
S1 opens the pre- heat function of gas heater in the standby state;
S2, gas heater water pump are opened;
S3 detects the water flow in gas heater main waterway, when the water flow is greater than preset booting water flow, enters S4;Otherwise the standby mode that gas heater is kept;
S4, gas water heater ignition enter preheating mode;
S5 detects the return water temperature of gas heater, when the return water temperature is greater than preset preheating temperature, completes preheating, It switches off the pump;Otherwise the working condition of the variation control gas heater by gas heater heat exchange amount;
S6, when the water flow in gas heater main waterway is greater than preset shutdown water flow, gas heater maintains burning; Otherwise gas heater is flame-out to close.
2. a kind of gas heater control method according to claim 1, which is characterized in that pass through combustion gas heat in the S5 The working condition of the variation control gas heater of hydrophone heat exchange amount, specifically:
When the heat exchange variable quantity of gas heater is greater than preset heat exchange variable quantity, gas heater completes preheating, closes water Pump;Otherwise return to S3.
3. a kind of gas heater control method according to claim 2, which is characterized in that the gas heater changes Thermal change amount are as follows: the heat exchange amount at current time and the difference of last moment heat exchange amount, it may be assumed that
△QActual measurement=QActual measurement-QIt is former
In above formula, △ QActual measurementFor the heat exchange variable quantity of gas heater, QActual measurementFor the heat exchange amount at current time, QIt is formerFor last moment Heat exchange amount.
4. a kind of gas heater control method according to claim 3, which is characterized in that the heat exchange at the current time Measure QActual measurementIt is calculated especially by following formula:
QActual measurement=(TWater outlet-TWater inlet)×VActual measurement
In above formula, TWater outletFor leaving water temperature, TWater inletFor inflow temperature, VActual measurementFor the water flow at the current time in main waterway.
5. a kind of gas heater control method according to claim 1, which is characterized in that pass through combustion gas heat in the S5 The working condition of the variation control gas heater of hydrophone heat exchange amount, specifically:
When the heat exchange change rate of gas heater is greater than preset heat exchange change rate, gas heater completes preheating, closes water Pump;Otherwise return to S3.
6. a kind of gas heater control method according to claim 5, which is characterized in that the gas heater changes Thermal change rate are as follows: the heat exchange amount at current time and the difference of last moment heat exchange amount, then the ratio with last moment heat exchange amount, it may be assumed that
△LActual measurement=(QActual measurement-QIt is former)/QIt is former
In above formula, △ LActual measurementFor the heat exchange change rate of gas heater, QActual measurementFor the heat exchange amount at current time, QIt is formerFor last moment Heat exchange amount.
7. a kind of gas heater control method according to claim 4 or 6, which is characterized in that pass through combustion in the S5 The working condition of the variation control gas heater of gas water-heater heat-exchanging amount further comprises:
When the heat exchange change rate that the heat exchange variable quantity of gas heater is greater than preset heat exchange variable quantity or gas heater is big When preset heat exchange change rate, water pump is closed;
Judge whether the water flow in gas heater main waterway is greater than preset shutdown water flow at this time, if then gas and hot water Device maintains burning;Otherwise gas heater is flame-out to close, and is back to S2.
8. a kind of gas heater control method according to claim 2, which is characterized in that the current time and upper one Moment differs 5~15s;Preset heat exchange variable quantity is 3~10 (K*L/min).
9. a kind of gas heater using the described in any item control methods of claim 1-8, which is characterized in that it includes heat Hydrophone ontology (1), heat exchanger (2), water pipeline (3), water flow sensing unit (4), inflow temperature detection unit (5), water pump (6), controller (7), gas control valve (8) and leaving water temperature detection unit (9), the heat exchanger (2) are arranged in hot water In device ontology (1), the water pipeline (3) passes through heat exchanger (2), and the water flow sensing unit (4) and water pump (6) are respectively provided with On water pipeline (3), the water inlet detection unit (5) and leaving water temperature detection unit (9) are separately positioned on water heater body (1) water inlet end and water outlet, the water flow sensing unit (4), water pump (6), inflow temperature detection unit (5), combustion gas control Valve (8) and leaving water temperature detection unit (9) are connect with controller (7).
10. a kind of gas heater according to claim 9, which is characterized in that the gas heater further comprise with The display screen (10) of controller (7) connection, is provided with preheating function button on the display screen (10).
CN201910507028.7A 2019-06-12 2019-06-12 A kind of gas heater control method and gas heater Pending CN110220314A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110657583A (en) * 2019-09-16 2020-01-07 广东万家乐燃气具有限公司 Water temperature control method and device
CN110806013A (en) * 2019-11-08 2020-02-18 华帝股份有限公司 Control method of zero-cold-water gas water heater and zero-cold-water gas water heater
CN111351228A (en) * 2020-02-21 2020-06-30 华帝股份有限公司 Wall-mounted furnace and control method for rapid temperature rise of wall-mounted furnace

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Publication number Priority date Publication date Assignee Title
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CN111351228A (en) * 2020-02-21 2020-06-30 华帝股份有限公司 Wall-mounted furnace and control method for rapid temperature rise of wall-mounted furnace

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