CN106679188A - Water-saving intelligent temperature-control water heater based on PID adjustment and method thereof - Google Patents

Water-saving intelligent temperature-control water heater based on PID adjustment and method thereof Download PDF

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Publication number
CN106679188A
CN106679188A CN201710028097.0A CN201710028097A CN106679188A CN 106679188 A CN106679188 A CN 106679188A CN 201710028097 A CN201710028097 A CN 201710028097A CN 106679188 A CN106679188 A CN 106679188A
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CN
China
Prior art keywords
unit
water
hot water
storage tank
temperature
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Pending
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CN201710028097.0A
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Chinese (zh)
Inventor
邵成武
郑太英
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Zhejiang University ZJU
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Zhejiang University ZJU
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Application filed by Zhejiang University ZJU filed Critical Zhejiang University ZJU
Priority to CN201710028097.0A priority Critical patent/CN106679188A/en
Publication of CN106679188A publication Critical patent/CN106679188A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2021Storage heaters
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00Automatic controllers
    • G05B11/01Automatic controllers electric
    • G05B11/36Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
    • G05B11/42Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P.I., P.I.D.
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means

Abstract

The invention discloses a water-saving intelligent temperature-control water heater based on PID adjustment and a method thereof. The water heater comprises a hot water tank shell, a water storing unit, a central control unit, an interaction unit, a conveying unit, a detecting unit, a flow direction unit, a heating unit and a power unit. The hot water tank shell is made of a acrylonitrile-butadiene-styrol copolymer material; the interaction unit is arranged on the hot water tank shell; the heating unit is arranged inside the water storing unit; the flow direction unit and the power unit are arranged in the conveying unit; the water storing unit, the conveying unit, the central control unit and the detecting unit are disposed inside the hot water tank shell; the water storing unit is interconnected with the conveying unit; and the central control unit is connected with the heating unit, the detecting unit, the interaction unit and the flow direction unit, and the detecting unit is connected with the water storing unit and the conveying unit. By means of the water-saving intelligent temperature-control water heater based on PID adjustment and the method thereof, during usage, the water temperature is convenient to adjust, and the temperature and flow are stable.

Description

A kind of water-saving intelligent temperature control water heater adjusted based on PID and its method
Technical field
The invention belongs to the field of water heaters of daily life, and in particular to a kind of water-saving intelligent temperature adjusted based on PID Control water heater and its method.
Background technology
Water heater on current market has two mostly, and one is to adjust water temperature inconvenience, and two is during use Temperature can change.Multiple use is had when people are using water heater, such as is had a bath, washed hair, foot bath, it is difficult to ought Front water heater is adjusted to accurate temperature, and there is no memory function, even if user is also needed using the same function of water heater Hot water temperature is adjusted every time.Two is that temperature can change during use, because the temperature of hot water can be present Change, to the comfort that user uses deleterious effect is caused.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, there is provided a kind of water-saving intelligent temperature adjusted based on PID Control water heater and its method.
Technical scheme is as follows:
A kind of water-saving intelligent temperature control water heater adjusted based on PID is included:
Housing of hot water box, water cell, maincenter control unit, interactive unit, supply unit, detector unit, flow to unit, Heating unit, power unit;
Described housing of hot water box adopts ABS polymer;Described interactive unit is arranged On housing of hot water box;Described heating unit is arranged in water cell, it is described flow to unit, power unit be arranged on it is defeated Send in unit;Described water cell, supply unit, maincenter control unit, detector unit are arranged in housing of hot water box;Water storage Unit and supply unit are interconnected, maincenter control unit and heating unit, detector unit, interactive unit, are flowed to unit and are connected, detection Unit is connected respectively with water cell, supply unit.
Preferably, described supply unit is PVC pipeline.Described flows to unit for electronic valve.
Preferably, described water cell is three storage tanks and two mixing pits;Three storage tanks include hot water water storage Case, recirculation water storage tank, water outlet storage tank;Two mixing pits include a mixing pit and No. two mixing pits;Hot water storage tank is led to Supply unit is crossed, unit is flowed to and is connected with a mixing pit again;A number mixing pit is connected by flowing to unit with No. two mixing pits; No. two mixing pits by supply unit, flow to unit and be connected with recirculation water storage tank, water outlet storage tank respectively;Recirculation water storage tank By power unit, supply unit, flow to unit and be connected with hot water storage tank;Hot water storage tank, mixing pit, a water outlet water storage Case by supply unit, flow to unit and be connected with extraneous;The shell of hot water storage tank is using the internal double-deck propylene for clogging sponge Nitrile-BS material envelope.
Preferably, described power unit is water pump.
Preferably, described detector unit is temperature sensor and hydrostatic sensor;Temperature sensor is separately positioned on heat In the PVC pipeline that water storage tank, No. two mixing pits and a mixing pit are connected with the external world;Hydrostatic sensor is separately positioned on heat In water storage tank, water outlet storage tank, backflow storage tank.
Preferably, described interactive unit is keyboard, display screen, button, display lamp and knob.
Preferably, described maincenter control unit is MSP430 single-chip microcomputers and its peripheral circuit.
Preferably, described heating unit is metal tube and on-off circuit;Heating unit is connected with maincenter control unit.
The temp. control method of the described water-saving intelligent temperature control water heater adjusted based on PID, it is characterised in that including as follows Step:1) equipment initialization
Switch on power and heating unit, maincenter control unit, interactive unit, power unit, detector unit are powered;It is logical Cross and press the button startup heating, the setting value of user is input into by keyboard or knob, setting value includes the temperature of hot water and goes out The size of water current, maincenter control unit is operated;
2) link is heated
Maincenter control unit control heating unit is heated to the water in hot water storage tank, the output of MSP430 single-chip microcomputers The on-off circuit of PWM ripples to heating unit, the output voltage size of controlling switch circuit, the duty of PWM ripples is bigger, output voltage It is bigger;This output voltage is added on metal tube, and metal tube generates heat to the hot water heating in hot water storage tank, the bigger heating of voltage Power is bigger;The temperature sensor that has in hot water storage tank and hydrostatic sensor are by the water yield in hot water storage tank and the temperature of hot water Degree gathers and passes to MSP430 single-chip microcomputers, when the water yield crosses what control hot water storage tank at least was connected with the external world in hot water storage tank Electronic valve in PVC pipeline is opened, and flows into cold water, when hypervolia then controls hot water storage tank and is connected with the external world in boiler PVC pipeline on electronic valve close;When judging that water temperature is increased to temperature upper limit in boiler, then control heating unit and stop Only heat, when the temperature in water tank is reduced to lowest temperature, then control the heating of heating unit full power so that the heat in boiler Water is maintained at suitable temperature and the water yield;
3) governing loop
It is required whenever user input water temperature t0 and during discharge c0, single-chip microcomputer MSP430 just can read input Temperature t1 of hot water is input into MSP430 single-chip microcomputers by value, the temperature sensor in hot water storage tank, and a mixing pit connects with extraneous The temperature of cold water t2 is input into MSP430 single-chip microcomputers by the temperature sensor in logical PVC pipeline, and single-chip microcomputer is according to the two temperature Electronic valve aperture x1 in the PVC pipeline that a mixing pit is connected with the external world, heat are controlled with the temperature and discharge of user's setting Electronic valve aperture x2 in the PVC pipeline that water storage tank is connected with a mixing pit, two apertures meet following equation:
Solution can be obtained
A number mixing pit is, in order to allow hot water and cold water to be sufficiently mixed, through mixed hot water No. two mixing pits to have been flowed into In, the temperature of hot water in No. two mixing pits is passed to MSP430 by the temperature sensor in No. two mixing pits, when in No. two mixing pits Hot water temperature and user setting temperature difference within the specific limits, then MSP430 controls No. two mixing pits and water outlet storage tank Electronic valve in connected PVC pipeline is opened, and the hot water for making proper temperature flows into water outlet tank, otherwise opens No. two mixing The electronic valve in PVC pipeline that pond is connected with recirculation water storage tank;When system detectio is to when the hot water temperature in No. two mixing pits More than a less value, MSP430 adjusts x1 and x2 to the temperature difference that degree sets with user using pid control algorithm, until two The temperature gap of the hot water temperature in number mixing pit and setting is in set point;When MSP430 is passed by the hydraulic pressure in storage tank Sensor detects its interior water yield and reaches setting value, just starts to open at the electronics in the PVC pipeline that water outlet storage tank is communicated with the external world Valve.
Description of the drawings
Fig. 1 is the cellular construction schematic diagram of the water-saving intelligent temperature control water heater adjusted based on PID.
Specific embodiment
As shown in figure 1, a kind of water-saving intelligent temperature control water heater adjusted based on PID is included:Housing of hot water box, water storage list Unit, maincenter control unit, interactive unit, supply unit, detector unit, flow to unit, heating unit, power unit;
Described housing of hot water box adopts ABS polymer;Described interactive unit is arranged On housing of hot water box;Described heating unit is arranged in water cell, it is described flow to unit, power unit be arranged on it is defeated Send in unit;Described water cell, supply unit, maincenter control unit, detector unit are arranged in housing of hot water box;Water storage Unit and supply unit are interconnected, maincenter control unit and heating unit, detector unit, interactive unit, are flowed to unit and are connected, detection Unit is connected respectively with water cell, supply unit.
Preferably, described supply unit is PVC pipeline.Described flows to unit for electronic valve.
Preferably, described water cell is three storage tanks and two mixing pits;Three storage tanks include hot water water storage Case, recirculation water storage tank, water outlet storage tank;Two mixing pits include a mixing pit and No. two mixing pits;Hot water storage tank is led to Supply unit is crossed, unit is flowed to and is connected with a mixing pit again;A number mixing pit is connected by flowing to unit with No. two mixing pits; No. two mixing pits by supply unit, flow to unit and be connected with recirculation water storage tank, water outlet storage tank respectively;Recirculation water storage tank By power unit, supply unit, flow to unit and be connected with hot water storage tank;Hot water storage tank, mixing pit, a water outlet water storage Case by supply unit, flow to unit and be connected with extraneous;The shell of hot water storage tank is using the internal double-deck propylene for clogging sponge Nitrile-BS material envelope.
Preferably, described power unit is water pump.
Preferably, described detector unit is temperature sensor and hydrostatic sensor;Temperature sensor is separately positioned on heat In the PVC pipeline that water storage tank, No. two mixing pits and a mixing pit are connected with the external world;Hydrostatic sensor is separately positioned on heat In water storage tank, water outlet storage tank, backflow storage tank.
Preferably, described interactive unit is keyboard, display screen, button, display lamp and knob.
Preferably, described maincenter control unit is MSP430 single-chip microcomputers and its peripheral circuit.
Preferably, described heating unit is metal tube and on-off circuit;Heating unit is connected with maincenter control unit.
The temp. control method of the described water-saving intelligent temperature control water heater adjusted based on PID, it is characterised in that including as follows Step:1) equipment initialization
Switch on power and heating unit, maincenter control unit, interactive unit, power unit, detector unit are powered;It is logical Cross and press the button startup heating, the setting value of user is input into by keyboard or knob, setting value includes the temperature of hot water and goes out The size of water current, maincenter control unit is operated;
2) link is heated
Maincenter control unit control heating unit is heated to the water in hot water storage tank, the output of MSP430 single-chip microcomputers The on-off circuit of PWM ripples to heating unit, the output voltage size of controlling switch circuit, the duty of PWM ripples is bigger, output voltage It is bigger;This output voltage is added on metal tube, and metal tube generates heat to the hot water heating in hot water storage tank, the bigger heating of voltage Power is bigger;The temperature sensor that has in hot water storage tank and hydrostatic sensor are by the water yield in hot water storage tank and the temperature of hot water Degree gathers and passes to MSP430 single-chip microcomputers, when the water yield crosses what control hot water storage tank at least was connected with the external world in hot water storage tank Electronic valve in PVC pipeline is opened, and flows into cold water, when hypervolia then controls hot water storage tank and is connected with the external world in boiler PVC pipeline on electronic valve close;When judging that water temperature is increased to temperature upper limit in boiler, then control heating unit and stop Only heat, when the temperature in water tank is reduced to lowest temperature, then control the heating of heating unit full power so that the heat in boiler Water is maintained at suitable temperature and the water yield;
3) governing loop
It is required whenever user input water temperature t0 and during discharge c0, single-chip microcomputer MSP430 just can read input Temperature t1 of hot water is input into MSP430 single-chip microcomputers by value, the temperature sensor in hot water storage tank, and a mixing pit connects with extraneous The temperature of cold water t2 is input into MSP430 single-chip microcomputers by the temperature sensor in logical PVC pipeline, and single-chip microcomputer is according to the two temperature Electronic valve aperture x1 in the PVC pipeline that a mixing pit is connected with the external world, heat are controlled with the temperature and discharge of user's setting Electronic valve aperture x2 in the PVC pipeline that water storage tank is connected with a mixing pit, two apertures meet following equation:
Solution can be obtained
A number mixing pit is, in order to allow hot water and cold water to be sufficiently mixed, through mixed hot water No. two mixing pits to have been flowed into In, the temperature of hot water in No. two mixing pits is passed to MSP430 by the temperature sensor in No. two mixing pits, when in No. two mixing pits Hot water temperature and user setting temperature difference within the specific limits, general desirable ± 1.5 DEG C, then MSP430 controls No. two and mixes The electronic valve closed in the PVC pipeline that pond is connected with water outlet storage tank is opened, and the hot water for making proper temperature flows into water outlet tank, Otherwise open the electronic valve in the PVC pipeline that No. two mixing pits are connected with recirculation water storage tank;When system detectio is to when No. two The temperature difference that hot water temperature in mixing pit sets with user is more than a less value, when generally ± 0.2 DEG C, MSP430 X1 and x2 is adjusted using pid control algorithm, the hot water temperature in No. two mixing pits is setting model with the temperature gap of setting In enclosing;Setting value is reached when MSP430 detects its interior water yield by the hydrostatic sensor in storage tank, water outlet is just started to open at The electronic valve in PVC pipeline that storage tank is communicated with the external world.

Claims (10)

1. it is a kind of based on PID adjust water-saving intelligent temperature control water heater, it is characterised in that include:
Housing of hot water box, water cell, maincenter control unit, interactive unit, supply unit, detector unit, flow to unit, heating Unit, power unit;
Described housing of hot water box adopts ABS polymer;Described interactive unit is arranged on heat On tank shell;Described heating unit is arranged in water cell, and described flow to unit, power unit is arranged on conveying list In first;Described water cell, supply unit, maincenter control unit, detector unit are arranged in housing of hot water box;Water cell With supply unit interconnection, maincenter control unit and heating unit, detector unit, interactive unit, flow to unit and be connected, detector unit It is connected with water cell, supply unit respectively.
2. it is according to claim 1 it is a kind of based on PID adjust water-saving intelligent temperature control water heater, it is characterised in that it is described Supply unit be PVC pipeline.
3. it is according to claim 1 and 2 it is a kind of based on PID adjust water-saving intelligent temperature control water heater, it is characterised in that Described flows to unit for electronic valve.
4. it is according to claim 1 it is a kind of based on PID adjust water-saving intelligent temperature control water heater, it is characterised in that it is described Water cell be three storage tanks and two mixing pits;Three storage tanks include hot water storage tank, recirculation water storage tank, water outlet Storage tank;Two mixing pits include a mixing pit and No. two mixing pits;Hot water storage tank passes through supply unit, flows to unit again It is connected with a mixing pit;A number mixing pit is connected by flowing to unit with No. two mixing pits;No. two mixing pits are single by conveying Unit, flow to unit and be connected with recirculation water storage tank, water outlet storage tank respectively;Recirculation water storage tank is single by power unit, conveying Unit, flow to unit and be connected with hot water storage tank;Hot water storage tank, mixing pit, a water outlet storage tank are by supply unit, flow direction Unit is connected with the external world;The shell of hot water storage tank is using the internal double-deck acrylonitrile-butadiene-styrene (ABS) copolymerization for clogging sponge Thing material envelope.
5. it is according to claim 4 it is a kind of based on PID adjust water-saving intelligent temperature control water heater, it is characterised in that it is described Power unit be water pump.
6. it is according to claim 4 it is a kind of based on PID adjust water-saving intelligent temperature control water heater, it is characterised in that it is described Detector unit be temperature sensor and hydrostatic sensor;Temperature sensor is separately positioned on hot water storage tank, No. two mixing pits And a mixing pit with the PVC pipeline that is connected of the external world;Hydrostatic sensor is separately positioned on hot water storage tank, water outlet water storage In case, backflow storage tank.
7. it is according to claim 1 it is a kind of based on PID adjust water-saving intelligent temperature control water heater, it is characterised in that it is described Interactive unit be keyboard, display screen, button, display lamp and knob.
8. it is according to claim 1 it is a kind of based on PID adjust water-saving intelligent temperature control water heater, it is characterised in that it is described Maincenter control unit be MSP430 single-chip microcomputers and its peripheral circuit.
9. it is according to claim 8 it is a kind of based on PID adjust water-saving intelligent temperature control water heater, it is characterised in that it is described Heating unit be metal tube and on-off circuit;Heating unit is connected with maincenter control unit.
10. a kind of temp. control method of the as claimed in claim 9 water-saving intelligent temperature control water heater adjusted based on PID, it is special Levy is to comprise the steps:
1) equipment initialization
Switch on power and heating unit, maincenter control unit, interactive unit, power unit, detector unit are powered;By pressing Lower button starts heating, and by keyboard or knob the setting value of user is input into, and setting value includes the temperature and water outlet water of hot water The size of stream, maincenter control unit is operated;
2) link is heated
Maincenter control unit control heating unit is heated to the water in hot water storage tank, MSP430 single-chip microcomputers output PWM ripples To the on-off circuit of heating unit, the output voltage size of controlling switch circuit, the duty of PWM ripples is bigger, and output voltage is bigger; This output voltage is added on metal tube, and metal tube generates heat to the hot water heating in hot water storage tank, the power of the bigger heating of voltage It is bigger;The temperature of the water yield in hot water storage tank and hot water is adopted in the temperature sensor and hydrostatic sensor having in hot water storage tank Collect and pass to MSP430 single-chip microcomputers, when the water yield crosses the pvc pipe that at least control hot water storage tank is connected with the external world in hot water storage tank Electronic valve on road is opened, and flows into cold water, when hypervolia then controls the PVC that hot water storage tank is connected with the external world in boiler Electronic valve on pipeline is closed;When judging that water temperature is increased to temperature upper limit in boiler, then control heating unit and stop adding Heat, when the temperature in water tank is reduced to lowest temperature, then controls the heating of heating unit full power so that the hot water in boiler is protected Hold in suitable temperature and the water yield;
3) governing loop
It is required whenever user input water temperature t0 and during discharge c0, single-chip microcomputer MSP430 just can read the value of input, Temperature t1 of hot water is input into MSP430 single-chip microcomputers by the temperature sensor in hot water storage tank, what mixing pit was in communication with the outside The temperature of cold water t2 is input into MSP430 single-chip microcomputers by the temperature sensor in PVC pipeline, and single-chip microcomputer is according to the two temperature and use The temperature and discharge of family setting controls electronic valve aperture x1 in the PVC pipeline that a mixing pit is connected with the external world, hot water storage Electronic valve aperture x2 in the PVC pipeline that water tank is connected with a mixing pit, two apertures meet following equation:
x 1 + x 2 = c 0 x 1 · t 1 + x 2 · t 2 c 0 = t 0
Solution can be obtained
The mixed hot water of number mixing pit has been flowed in No. two mixing pits, and the temperature sensor in No. two mixing pits is mixed by No. two The temperature for closing hot water in pond passes to MSP430, when the temperature difference of the hot water temperature in No. two mixing pits and user's setting is in setting In the range of, then the electronic valve that MSP430 is controlled in the PVC pipeline that No. two mixing pits are connected with water outlet storage tank is opened, and makes temperature Suitable hot water flows into water outlet tank, otherwise opens the electricity in the PVC pipeline that No. two mixing pits are connected with recirculation water storage tank Sub- valve;When system detectio is to when the hot water temperature in No. two mixing pits and temperature difference setting more than of user's setting Value, MSP430 adjusts x1 and x2, the hot water temperature in No. two mixing pits and the temperature gap for setting using pid control algorithm In set point;Setting value is reached when MSP430 detects its interior water yield by the hydrostatic sensor in storage tank, is just started Open the electronic valve in the PVC pipeline that water outlet storage tank is communicated with the external world.
CN201710028097.0A 2017-01-12 2017-01-12 Water-saving intelligent temperature-control water heater based on PID adjustment and method thereof Pending CN106679188A (en)

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CN201710028097.0A CN106679188A (en) 2017-01-12 2017-01-12 Water-saving intelligent temperature-control water heater based on PID adjustment and method thereof

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Application Number Priority Date Filing Date Title
CN201710028097.0A CN106679188A (en) 2017-01-12 2017-01-12 Water-saving intelligent temperature-control water heater based on PID adjustment and method thereof

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Publication Number Publication Date
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107655209A (en) * 2017-11-10 2018-02-02 西安领投企业管理咨询有限公司 Domestic intelligent keeps the air-source water heater of water temperature
US11313588B2 (en) 2019-09-20 2022-04-26 Camus Hydronics Ltd. System and method for controlling water heater output temperature
CN115268538A (en) * 2022-07-11 2022-11-01 宁波新芝生物科技股份有限公司 Synchronous PID control device and method for water temperature and flow
CN115268538B (en) * 2022-07-11 2024-04-05 宁波新芝生物科技股份有限公司 Synchronous PID control device and method for water temperature and flow

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Publication number Priority date Publication date Assignee Title
FR2669406A1 (en) * 1990-11-19 1992-05-22 Perge Investissement Method and device for regulating functioning by control of the circulation of the domestic heating fluid in a boiler for instantaneous production of sanitary hot water
CN201945014U (en) * 2011-03-10 2011-08-24 中南林业科技大学 Intelligent water heater capable of controlling water output temperature
CN202511477U (en) * 2012-03-19 2012-10-31 肖成超 Temperature-control water-saving device for water heater
CN203100195U (en) * 2012-12-18 2013-07-31 西华大学 Water-saving loop supporting water-heating device
CN204574513U (en) * 2015-02-04 2015-08-19 郑华娟 A kind of domestic hot water's controller
CN105066433A (en) * 2015-07-30 2015-11-18 芜湖美的厨卫电器制造有限公司 Hot-water system, constant-temperature device and control method of constant-temperature device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2669406A1 (en) * 1990-11-19 1992-05-22 Perge Investissement Method and device for regulating functioning by control of the circulation of the domestic heating fluid in a boiler for instantaneous production of sanitary hot water
CN201945014U (en) * 2011-03-10 2011-08-24 中南林业科技大学 Intelligent water heater capable of controlling water output temperature
CN202511477U (en) * 2012-03-19 2012-10-31 肖成超 Temperature-control water-saving device for water heater
CN203100195U (en) * 2012-12-18 2013-07-31 西华大学 Water-saving loop supporting water-heating device
CN204574513U (en) * 2015-02-04 2015-08-19 郑华娟 A kind of domestic hot water's controller
CN105066433A (en) * 2015-07-30 2015-11-18 芜湖美的厨卫电器制造有限公司 Hot-water system, constant-temperature device and control method of constant-temperature device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107655209A (en) * 2017-11-10 2018-02-02 西安领投企业管理咨询有限公司 Domestic intelligent keeps the air-source water heater of water temperature
US11313588B2 (en) 2019-09-20 2022-04-26 Camus Hydronics Ltd. System and method for controlling water heater output temperature
CN115268538A (en) * 2022-07-11 2022-11-01 宁波新芝生物科技股份有限公司 Synchronous PID control device and method for water temperature and flow
CN115268538B (en) * 2022-07-11 2024-04-05 宁波新芝生物科技股份有限公司 Synchronous PID control device and method for water temperature and flow

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