CN100467972C - Energy saving controlling method for electric water heater, and electrically heating system - Google Patents

Energy saving controlling method for electric water heater, and electrically heating system Download PDF

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Publication number
CN100467972C
CN100467972C CNB200610033005XA CN200610033005A CN100467972C CN 100467972 C CN100467972 C CN 100467972C CN B200610033005X A CNB200610033005X A CN B200610033005XA CN 200610033005 A CN200610033005 A CN 200610033005A CN 100467972 C CN100467972 C CN 100467972C
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water
temperature
heater
water tank
electric heater
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CN101004290A (en
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王焱
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WANG YAN MA YINLONG FENG GUOJUN HU YIJUN
WANG YAN MA YINLONG FENG GUOJU
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WANG YAN MA YINLONG FENG GUOJUN HU YIJUN
WANG YAN MA YINLONG FENG GUOJU
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Abstract

The present invention relates to an energy-saving control method of electric water-heater and its electroheating system. The described energy-saving control method includes the following steps: utilizing hydraulic control method to start electric water-heater, and utilizing seasonal application mode automatically-selected by electric water-heater to define correspondent water-tank heat-insulating temperature, so that it can meet the requirements of different environmental temperatures for hot water so as to attain the goal of saving energy. Said electroheating system has two water-heaters, one of them only is used for heating small quantity of water.

Description

A kind of energy-saving control method of electric heater and electric heating system thereof
Technical field
The present invention relates to electric heater, especially a kind of energy-saving control method of electric heater and electric heating system thereof.
Background technology
At present, electric heater has entered huge numbers of families, and popularity rate is more and more higher.Common electric heater roughly is divided into two kinds of storage water heater and directly-heated types; Water-storage electric heater is provided with water storage tank, and heater carries out heat tracing (the water tank heat preserving temperature is generally 75 ℃) to the water in the water storage tank for a long time, so power consumption is bigger, and source benefit is low; And heater is that the water in all casings is heated during use, and therefore, it is slower to heat up, the comfort that influence is used; The direct-heating type electric heater has cancelled water storage tank, adopts high power (usually more than the 6KW) heater, quick heating, and source benefit is higher, and still so high power causes very big burden to the power supply circuits of general family, occurs trip phenomenon easily.
Summary of the invention
In order to overcome the deficiency of existing electric heater, the invention provides a kind of energy-saving control method and electric heating system thereof of electric heater.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of energy-saving control method of electric heater may further comprise the steps:
A: the heater of electric heater is divided into the water that is arranged in the water tank water intake district feed-tank is incubated the primary heater of heating and is arranged on the water tank exhalant region to exporting to the secondary heater that water that the user uses heats from water tank immediately;
B: set water tank heat preserving temperature and maximum water temperature;
C: the duty of electric heater is divided into water storage keeping warm mode and user mode; When electric heater was in the water storage keeping warm mode, secondary heater was not worked; When if the water temperature in water tank water intake district is not higher than the water tank heat preserving temperature, primary heater work; If when the water temperature in water tank water intake district was higher than the water tank heat preserving temperature, primary heater was not worked; When electric heater was in user mode, primary heater and secondary heater changed alternation according to the water temperature of water tank; When electric heater is brought into use, secondary heater work; If when the water temperature of water tank exhalant region was higher than maximum water temperature, secondary heater was not worked, and switches to primary heater work; If when water tank water intake district water temperature was higher than the water tank heat preserving temperature when switching, primary heater was not worked yet;
Flow according to the trunk water route judges with the comparative result of the minimum of a value of presetting whether electric heater is used; It is 1.5L/min that the present invention sets the flow minimum of a value; When the flow in trunk water route is not less than default minimum of a value, be judged to be user mode; When the flow in trunk water route during, be judged to be the water storage keeping warm mode less than default minimum of a value.
The temperature that enters the water of electric heater water tank is divided into 3 temperature ranges from height to hanging down, and corresponding heating mode with electric heater is divided into summer mode, spring and autumn pattern and winter mode, and every kind of heating mode is set corresponding pattern selected temperature T1, water tank heat preserving temperature T 2 and maximum water temperature T3; According to the selected corresponding heating mode of the pattern selected temperature scope that temperature value belonged to of the water of water tank inlet.
Rule is as follows: pattern selected temperature T1 is divided into T1 〉=27 ℃, 27 ℃〉T1 〉=19 ℃ and 19 ℃〉three temperature ranges of T1.
(1) if: during inflow temperature 〉=27 ℃, be judged as summer mode, then Dui Ying water tank heat preserving temperature T 2A is 39 ℃; Maximum water temperature T3A is 54 ℃;
(2) if: in the time of 19 ℃≤inflow temperature<27 ℃, be judged as the spring and autumn pattern, 1 ℃ of then corresponding water tank heat preserving temperature T 2B whenever falls in inflow temperature increases by 4 ℃; Its corresponding maximum water temperature T3B increases by 15 ℃ on the basis of T2B.
That is:
T1B?≥27℃?26℃?25℃?24℃?23℃?22℃?21℃?20℃?≤19℃
T2B 39℃?43℃?47℃?51℃?55℃?59℃?63℃?67℃?71℃
T3B 54℃?58℃?62℃?66℃?70℃?74℃?78℃?82℃?86℃
(3) if: during inflow temperature<19 ℃, be judged as winter mode, then Dui Ying water tank heat preserving temperature T 2C is 71 ℃; Maximum water temperature T3C is 86 ℃;
Set a start-up temperature that is lower than the water tank heat preserving temperature, when electric heater is in the water storage keeping warm mode, if when the water temperature in water tank water intake district is lower than start-up temperature, primary heater work.This start-up temperature is lower than 8 ℃-10 ℃ of corresponding water tank heat preserving temperature.
Setting one is lower than the heater switching temperature of corresponding maximum water temperature, and when electric heater was in user mode, when being higher than switching temperature as if water tank exhalant region water temperature, secondary heater was not worked, and switches to primary heater work.This switching temperature is lower than 5 ℃-7 ℃ of corresponding maximum water temperatures.
As optimization, also set the electric heater heating standby time limit, close beginning with primary heater into this time limit, if up to the delay value of setting, electric heater still for being in the water storage keeping warm mode, is closed electric heating system; If detect electric heater in the time limit and be used setting, according to the heating that hockets of selected heating mode control primary heater and secondary heater.When setting this, the present invention is limited to 0.5 hour.
Comprehensive above technical characterictic, a kind of control procedure of energy-saving control method of electric heater is as follows:
(1) selected heating mode; (2) if the flow in trunk water route does not reach predetermined minimum, when electric heater is in the water storage keeping warm mode; If the water temperature in water tank water intake district is higher than the water tank heat preserving temperature, primary heater 1 is not worked, if the water temperature in water tank water intake district is lower than start-up temperature, primary heater 1 is just worked, and is heated to the water tank heat preserving temperature and stops heating again; (3) if the flow in trunk water route reaches predetermined minimum, electric heater is in when using shape, has just opened when using, secondary heater 2 is promptly started working, if when the water temperature of water tank exhalant region was higher than maximum water temperature, secondary heater 2 was not worked, automatically switch to primary heater 1 work; Along with the continuous output of hot water, the water temperature of water tank descends gradually, has only when the water temperature of water tank is lower than switching temperature, automatically switch to secondary heater 2 work again, and primary heater 1 is not worked, so circulation; But when switching such as the water temperature of water tank be not less than the water tank heat preserving temperature, then primary heater 1 is not worked yet; (4) if electric heater is when being in the water storage keeping warm mode, close beginning with primary heater into this time limit, the flow in trunk water route does not reach predetermined minimum, then shutdown system yet after 0.5 hour.
The present invention also provides a kind of corresponding electric heating system simultaneously, comprise water tank, water inlet pipe, outlet conduit, water route by-pass valve control, heating unit and control system, it is characterized in that: described heating unit is made up of primary heater and secondary heater that correspondence is arranged on water tank water intake district and exhalant region position; Described control system is made up of second temperature sensor and a flow sensor of governor circuit, first temperature sensor that detects water tank water intake district water temperature, detection water tank exhalant region water temperature; Described first temperature sensor is arranged near the primary heater, and described second temperature sensor is arranged near the secondary heater, and described sensing flux device is arranged on the trunk water route of electric heater; Whether governor circuit reaches predetermined minimum according to the output signal of sensing flux device is judged that electric heater is in water storage keeping warm mode or user mode; When electric heater was in the water storage keeping warm mode, secondary heater was not worked; Governor circuit judges according to the output signal of first temperature sensor whether water tank water intake district water temperature reaches the water tank heat preserving temperature, when not being higher than the water tank heat preserving temperature as if water tank water intake district water temperature, and primary heater work; If when water tank water intake district water temperature was higher than the water tank heat preserving temperature, primary heater was not worked; When electric heater was in user mode, governor circuit changed control primary heater and secondary heater alternation according to the water temperature of water tank; When electric heater is brought into use, secondary heater work; Governor circuit judges according to the output signal of second temperature sensor whether the water temperature of water tank exhalant region reaches maximum water temperature; If when water tank exhalant region water temperature was not less than maximum water temperature, secondary heater was not worked, and switches to primary heater work; If when water tank water intake district water temperature was higher than corresponding water tank heat preserving temperature when switching, primary heater was not worked yet;
Described governor circuit is set three kinds of heating modes, and every kind of heating mode is set corresponding pattern selected temperature, water tank heat preserving temperature and maximum water temperature; Water inlet pipe place at water tank also is provided with three-temperature sensor, and governor circuit compares according to the signal of three-temperature sensor and the analog value of pattern selected temperature, enables corresponding heating mode according to comparative result.
Described water tank is made up of first inner bag and second inner bag that connect each other, and primary heater and secondary heater relative set are in first inner bag and second inner bag.
Also be provided with hold secondary heater and communicate with water tank help heat cup, the hot water outlet of water tank and the second temperature sensor correspondence are arranged on and help heat cup place.
Described water route by-pass valve control is for mixing water valve, and a water entering section of this mixed water valve is connected with water inlet pipe, and another water entering section is connected with the outlet conduit of water tank.
Described governor circuit is provided with timing module, governor circuit is closed enabling signal into this timing module with primary heater, after this timing module started, still when being in the water storage keeping warm mode, governor circuit was closed the electric heating part automatically up to the delay value electric heater of setting.
Governor circuit also is provided with memory module, and described memory module is preserved the operation parameter of electric heater the last time, calls institute's save value when starting once more.
The invention has the beneficial effects as follows, energy-saving control method utilizes water control to start electric heater, according to the environment water temperature, determine corresponding water tank heat preserving temperature and maximum water temperature, (environment is warm, and the temperature rise amplitude of water is less to suit hot water instructions for use under the varying environment temperature, environment cold, the temperature rise amplitude of water is bigger), when satisfying people's needs, realize lower water tank heat preserving temperature and leaving water temperature, reach energy-conservation purpose.Described in addition electric heating system is provided with two cover heaters, and wherein a heater only heats a spot of water of exhalant region when work, so temperature rise is fast, effect and direct-heating type electric heater are similar.
Description of drawings
Fig. 1 is a program flow diagram of the present invention.
Fig. 2 is a schematic block circuit diagram of the present invention.
Fig. 3 is an electric heating system structural representation of the present invention.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
Consult Fig. 1 and Fig. 3, a kind of energy-saving control method of electric heater may further comprise the steps:
A: the heater of electric heater is divided into the water that is arranged in the water tank water intake district feed-tank is incubated the primary heater 1 of heating and is arranged on the water tank exhalant region to exporting to the secondary heater 2 that water that the user uses heats from water tank immediately;
B: set water tank heat preserving temperature and maximum water temperature.
C: the duty of electric heater is divided into water storage keeping warm mode and user mode; When electric heater was in the water storage keeping warm mode, secondary heater 2 was not worked; When if the water temperature in water tank water intake district is not higher than the water tank heat preserving temperature, primary heater 1 work; If when the water temperature in water tank water intake district was higher than the water tank heat preserving temperature, primary heater 1 was not worked; When electric heater was in user mode, primary heater 1 and secondary heater 2 changed alternation according to the water temperature of water tank; When electric heater is brought into use, secondary heater 2 work; If when the water temperature of water tank exhalant region was higher than maximum water temperature, secondary heater 2 was not worked, switch to primary heater 1 work; If when water tank water intake district water temperature was higher than the water tank heat preserving temperature when switching, primary heater 1 was not worked yet;
Flow according to the trunk water route judges with the comparative result of the minimum of a value of presetting whether electric heater is used; It is 1.5L/min that present embodiment is set the flow minimum of a value; When the flow in trunk water route is not less than default minimum of a value, be judged to be user mode; When the flow in trunk water route during, be judged to be the water storage keeping warm mode less than default minimum of a value.If the temperature that further will enter the water of electric heater water tank is divided into 3 temperature ranges to low from height, and corresponding heating mode with electric heater is divided into summer mode, spring and autumn pattern and winter mode, and every kind of heating mode is set corresponding pattern selected temperature T1, water tank heat preserving temperature T 2 and maximum water temperature T3;
Rule is as follows: pattern selected temperature T1 is divided into T1 〉=27 ℃, 27 ℃〉T1 〉=19 ℃ and 19 ℃〉three temperature ranges of T1.
(1) if: during inflow temperature 〉=27 ℃, be judged as summer mode, then Dui Ying water tank heat preserving temperature T 2A is 39 ℃; Maximum water temperature T3A is 54 ℃;
(2) if: in the time of 19 ℃≤inflow temperature<27 ℃, be judged as the spring and autumn pattern, 1 ℃ of then corresponding water tank heat preserving temperature T 2B whenever falls in inflow temperature increases by 4 ℃; Its corresponding maximum water temperature T3B increases by 15 ℃ on the basis of T2B.
That is:
T1B?≥27℃?26℃?25℃?24℃?23℃?22℃?21℃?20℃?≤19℃
T2B 39℃?43℃?47℃?51℃?55℃?59℃?63℃?67℃?71℃
T3B 54℃?58℃?62℃?66℃?70℃?74℃?78℃?82℃?86℃
(3) if: during inflow temperature<19 ℃, be judged as winter mode, then Dui Ying water tank heat preserving temperature T 2C is 71 ℃; Maximum water temperature T3C is 86 ℃;
Pattern selected temperature scope that temperature value belonged to and corresponding heating mode according to the water of water tank inlet.Also set a start-up temperature that is lower than the water tank heat preserving temperature, this start-up temperature is lower than 8 ℃-10 ℃ of corresponding water tank heat preserving temperature.Also set a heater switching temperature that is lower than corresponding maximum water temperature, this switching temperature is lower than 5 ℃-7 ℃ of corresponding maximum water temperatures;
Also set the electric heater heating standby time limit, be limited to 0.5 hour when the present invention sets this, when electric heater is in the water storage keeping warm mode, close beginning with primary heater into this time limit, if up to the delay value of setting, electric heater is still for being in water storage keeping warm mode, shutdown system; If detect electric heater in the time limit and be used setting, according to the heating that hockets of selected heating mode control primary heater and secondary heater.
Being 23 ℃ with the temperature of the water of water tank inlet below is that example specifies its control procedure.
(1) selected heating mode; Because 23 ℃ of pattern selected temperature scopes that are in spring and autumn, promptly system selectes the spring and autumn heating mode automatically, and corresponding maximum water temperature T1B is 70 ℃; Corresponding water tank heat preserving temperature T 2B is 55 ℃ (computational process is: 39 ℃+(27 ℃-23 ℃) * 4=55 ℃).
(2) if the flow in trunk water route does not reach 1.5L/min, when electric heater is in the water storage keeping warm mode; If the water temperature in water tank water intake district is higher than 55 ℃, primary heater 1 is not worked, if the water temperature in water tank water intake district is lower than 55 ℃, primary heater 1 is just worked, and is heated to 55 ℃ and stops heating again;
(3) if the flow in trunk water route reaches 1.5L/min, electric heater is in when using shape, has just opened when using, secondary heater 2 is promptly started working, if when the water temperature of water tank exhalant region was higher than 70 ℃, secondary heater 2 was not worked, automatically switch to primary heater 1 work; Along with the continuous output of hot water, the water temperature of water tank descends gradually, has only when the water temperature of water tank is lower than 63 ℃ (computational process is: 70 ℃-7 ℃=63 ℃), automatically switch to secondary heater 2 work again, and primary heater 1 is not worked, so circulation; But when switching such as the water temperature of water tank be not less than 55 ℃, then primary heater 1 is not worked yet;
(4) if electric heater is when being in the water storage keeping warm mode, close beginning with primary heater into this time limit, the flow in trunk water route does not reach 1.5L/min, then shutdown system yet after 0.5 hour.
By set reasonably, lower start-up temperature and switching temperature, satisfying under the prerequisite of serviceability, can reduce the time and the number of times of heating further, improve source benefit.
As optimization, also antifreeze heating can be set, when the water temperature in the water tank is lower than 4 ℃, start primary heater, heated 5 minutes.Even like this in the place of cold, do not influence the normal use of water heater yet.
Consult Fig. 1 to Fig. 3, a kind of corresponding electric heating system, comprise water tank 6, water inlet pipe 30, outlet conduit 31, water route by-pass valve control (32,33), heating unit and control system, described heating unit is that primary heater 1 and the secondary heater 2 of 3000W formed by power; Described water tank is made up of first inner bag 60 and second inner bag 61 that connect each other, and primary heater 1 is arranged near the bottom inhalant region of first inner bag 60; Secondary heater 2 is arranged near the top exhalant region of second inner bag 61; Primary heater 1 and the secondary heater 2 corresponding upstream and downstream positions that are in water tank 6 like this, the water in the primary heater 1 main feed-tank is incubated heating, and secondary heater 2 mainly heats exporting to the water that the user uses from water tank immediately; Because secondary heater 2 only heats a spot of water of exhalant region when work, so temperature rise is fast, effect and direct-heating type electric heater are similar.
Described control system is made up of governor circuit, first temperature sensor 40, second temperature sensor 41, three-temperature sensor 42 and a flow sensor 43; Described first temperature sensor 40 is arranged near the primary heater 1, is mainly used to measure the temperature of water tank water storage; Described second temperature sensor 41 is arranged near the secondary heater 2, is mainly used to measure immediately from the temperature of the hot water of water tank output; Described three-temperature sensor 42 is arranged on water inlet pipe 30 places, is mainly used to measure the environment water temperature that enters water tank; Described sensing flux device 43 is arranged on the trunk water route of electric heater; Whether governor circuit reaches predetermined minimum according to the output signal of sensing flux device 43 is judged that electric heater is in water storage keeping warm mode or user mode; It is 1.5L/min that present embodiment is set minimum discharge; The flow that detects the trunk water route when sensing flux device 43 judges that promptly electric heater is in the water storage keeping warm mode during less than 1.5L/min, and this moment, secondary heater 2 was not worked; When the flow that detects the trunk water route when sensing flux device 43 is not less than 1.5L/min, judge that promptly electric heater is in user mode, governor circuit control primary heater 1 and secondary heater 2 heating that hockets this moment.
The temperature that described governor circuit will enter the water of electric heater water tank is divided into 3 temperature ranges from height to hanging down, and respective settings summer mode, spring and autumn pattern and three kinds of heating modes of winter mode, every kind of heating mode is set corresponding pattern selected temperature T1, water tank heat preserving temperature T 2 and maximum water temperature T3;
Rule is as follows: pattern selected temperature T1 is divided into T1 〉=27 ℃, 27 ℃〉T1 〉=19 ℃ and 19 ℃〉three temperature ranges of T1.
(1) if: during 27 ℃ of inflow temperatures, be judged as summer mode, then Dui Ying water tank heat preserving temperature T 2A is 39 ℃; Maximum water temperature T3A is 54 ℃;
(2) if: in the time of 19 ℃≤inflow temperature<27 ℃, be judged as the spring and autumn pattern, 1 ℃ of then corresponding water tank heat preserving temperature T 2B whenever falls in inflow temperature increases by 4 ℃; Its corresponding maximum water temperature T3B increases by 15 ℃ on the basis of T2B.
That is:
T1B?≥27℃?26℃?25℃?24℃?23℃?22℃?21℃?20℃?≤19℃
T2B 39℃?43℃?47℃?51℃?55℃?59℃?63℃?67℃?71℃
T3B 54℃?58℃?62℃?66℃?70℃?74℃?78℃?82℃?86℃
(3) if: during inflow temperature<19 ℃, be judged as winter mode, then Dui Ying water tank heat preserving temperature T 2C is 71 ℃; Maximum water temperature T3C is 86 ℃;
Governor circuit is also set a start-up temperature that is lower than water tank heat preserving temperature T 2, and this start-up temperature is lower than 8 ℃-10 ℃ of corresponding water tank heat preserving temperature; Also set a heater switching temperature that is lower than corresponding maximum water temperature T3, this switching temperature is lower than 5 ℃-7 ℃ of corresponding maximum water temperatures.
Governor circuit compares according to the signal of the 3rd temperature 42 sensors and the analog value of pattern selected temperature, enables corresponding heating mode according to comparative result.
(1) when summer mode:
When A) electric heater is in the water storage keeping warm mode, the water tank heat preserving temperature T 2A of first inner bag 60 is 39 ℃, when water temperature≤29 of first inner bag 60 ℃ (computational process is: 39 ℃-10 ℃=29 ℃), 1 work of the 1st heater, when the water of first inner bag 60 be heated to 〉=39 ℃ the time, the 1st heater 1 stops heating, enters keeping warm mode;
B) electric heater is in when using shape, and primary heater 1 and secondary heater 2 are with variation of temperature, and mutual switch operating; Just open when using, secondary heater 2 is promptly started working; During as water temperature 〉=54 of the top exhalant region of second inner bag 61 ℃, secondary heater 2 is not worked, and 1 work of the 1st heater; Along with the continuous output of hot water, the water temperature of second inner bag 61 descends gradually, has only when water temperature≤47 of second inner bag 61 ℃, automatically switch to secondary heater 2 work again, and primary heater 1 is not worked; So circulation, but when switching as water temperature 〉=39 of first inner bag 60 ℃, then primary heater 1 is not worked yet.
(2) when the spring and autumn pattern:
When A) electric heater is in the water storage keeping warm mode (being 23 ℃ with the temperature of the water of water tank inlet is the example explanation).The water tank heat preserving temperature is 55 ℃ (computational process is: 39 ℃+(27 ℃-23 ℃) * 4=55 ℃); When water temperature 〉=55 of first inner bag 60 ℃, primary heater 1 is not worked, and when water temperature≤45 of first inner bag 60 ℃, primary heater 1 is just worked, and is heated to 55 ℃ and stops heating again, enters keeping warm mode;
B) electric heater is in when using shape, just opens when using, and secondary heater 2 is promptly started working, and during as water temperature 〉=70 of the top exhalant region of second inner bag 61 ℃, and secondary heater 2 is not worked, and automatically switches to primary heater 1 work; Along with the continuous output of hot water, the water temperature of second inner bag 61 descends gradually, has only when water temperature≤63 of second inner bag 61 ℃, automatically switch to secondary heater 2 work again, and primary heater 1 is not worked down, so circulation; But as water temperature 〉=55 of first inner bag 60 ℃, then primary heater 1 is not worked yet when switching;
(3) when winter mode:
When A) electric heater was in the water storage keeping warm mode, the water tank heat preserving temperature was 71 ℃, when water temperature 〉=71 of first inner bag 60 ℃, primary heater 1 is not worked, when water temperature≤61 of first inner bag 60 ℃, primary heater 1 is just worked, and is heated to 71 ℃ and stops heating again and enter keeping warm mode.
B) electric heater is in when using shape:
Just open when using, secondary heater 2 is promptly started working, and during as water temperature 〉=86 of the top exhalant region of second inner bag 61 ℃, secondary heater 2 is not worked, and automatically switches to primary heater 1 work; Along with the continuous output of hot water, the water temperature of second inner bag 61 descends gradually, has only when water temperature≤79 of the top exhalant region of second inner bag 61 ℃, automatically switch to secondary heater 2 work again, and primary heater 1 is not worked, so circulation; But as water temperature 〉=71 of first inner bag 60 ℃, then primary heater 1 is not worked yet when switching.
For preventing sparking, one of them heater stops 0.5 second later another heater and just starts working; Under the control of governor circuit, primary heater 1 and secondary heater 2 alternations are promptly in the situation that does not exist two cover heaters to work simultaneously.
Like this according to the environment water temperature, determine corresponding water tank heat preserving temperature, (environment is warm to suit hot water instructions for use under the varying environment temperature, the temperature rise amplitude of water is less, environment cold, the temperature rise amplitude of water is bigger), realized lower holding temperature when both having satisfied people's needs, reach energy-conservation purpose.Also set lower start-up temperature and switching temperature in addition, satisfy again under the prerequisite of serviceability, can reduce the time and the number of times of heating further, improve source benefit.
Described water route by-pass valve control 32 is for mixing water valve, and a water entering section of this mixed water valve is connected with water inlet pipe 30, and another water entering section is connected with the outlet conduit 31 of water tank 6.
Described water route by-pass valve control 33 is a relief valve, and when the pressure in the water tank 6 reached 0.7MPa, this relief valve began pressure release; This relief valve has unidirectional water conservancy diversion;
As preferred embodiment, also be provided with hold secondary heater 2 and communicate with water tank 6 help heat cup 5, the hot water outlet of water tank and second temperature sensor, 41 correspondences are arranged on and help heat cup 5 places.Utilization helps heat cup 5 further to limit immediately and exports to the water capacity that the user uses from water tank, makes the water temperature that helps in the heat cup 5 rise faster.
As preferred embodiment, governor circuit also is provided with antifreeze heating, when the water temperature in the water tank is lower than 4 ℃, starts primary heater 1, heats 5 minutes.Even in the place that cold is frozen, do not influence the normal use of water heater so yet.
Above-described specific embodiment only is the inventing type preferred embodiment, and the equivalent arrangements of being done according to the present patent application claim all should be technology of the present invention and contains such as.

Claims (15)

1. the energy-saving control method of an electric heater may further comprise the steps:
A: the heater of electric heater is divided into the water that is arranged in the water tank water intake district feed-tank is incubated the primary heater of heating and is arranged on the water tank exhalant region to exporting to the secondary heater that water that the user uses heats from water tank immediately;
B: set water tank heat preserving temperature and maximum water temperature;
C: the duty of electric heater is divided into water storage keeping warm mode and user mode; When electric heater was in the water storage keeping warm mode, secondary heater was not worked; When if the water temperature in water tank water intake district is not higher than the water tank heat preserving temperature, primary heater work; If when the water temperature in water tank water intake district was higher than the water tank heat preserving temperature, primary heater was not worked; When electric heater was in user mode, primary heater and secondary heater changed alternation according to the water temperature of water tank; When electric heater is brought into use, secondary heater work; If when the water temperature of water tank exhalant region was higher than maximum water temperature, secondary heater was not worked, and switches to primary heater work; If when water tank water intake district water temperature was higher than the water tank heat preserving temperature when switching, primary heater was not worked yet.
2. the energy-saving control method of a kind of electric heater according to claim 1, it is characterized in that: the temperature that will enter the water of electric heater water tank is divided into 3 temperature ranges from height to hanging down, and corresponding heating mode with electric heater is divided into summer mode, spring and autumn pattern and winter mode, and every kind of heating mode is set corresponding pattern selected temperature, water tank heat preserving temperature and maximum water temperature; Pattern selected temperature scope that temperature value belonged to and corresponding heating mode according to the water of water tank inlet.
3. the energy-saving control method of a kind of electric heater according to claim 1 and 2, it is characterized in that: setting one is lower than the start-up temperature of water tank heat preserving temperature, when electric heater is in the water storage keeping warm mode, if when the water temperature in water tank water intake district is lower than start-up temperature, primary heater work.
4. the energy-saving control method of a kind of electric heater according to claim 3, it is characterized in that: start-up temperature is lower than 8 ℃-10 ℃ of water tank heat preserving temperature.
5. according to the energy-saving control method of claim 1 or 2 or 4 described a kind of electric heaters, it is characterized in that: setting one is lower than the heater switching temperature of maximum water temperature, when electric heater is in user mode, when if the water temperature of water tank exhalant region is higher than switching temperature, secondary heater is not worked, and switches to primary heater work.
6. the energy-saving control method of a kind of electric heater according to claim 5, it is characterized in that: switching temperature is lower than 5 ℃-7 ℃ of maximum water temperatures.
7. according to the energy-saving control method of claim 1 or 2 or 4 or 6 described a kind of electric heaters, it is characterized in that: the flow and the comparative result of the minimum of a value of presetting according to the trunk water route judge whether electric heater is used; When the flow in trunk water route is not less than default minimum of a value, be judged to be user mode; When the flow in trunk water route during, be judged to be the water storage keeping warm mode less than default minimum of a value.
8. the energy-saving control method of a kind of electric heater according to claim 7, it is characterized in that: also set the electric heater heating standby time limit, close beginning with primary heater, if up to the delay value of setting into this time limit, electric heater still for being in the water storage keeping warm mode, is closed electric heating system; If detect electric heater in the time limit and be used setting, according to the heating that hockets of selected heating mode control primary heater and secondary heater.
9. electric heating system of realizing the described electric heater energy-saving control method of claim 1, comprise water tank, water inlet pipe, outlet conduit, water route by-pass valve control, heating unit and control system, it is characterized in that: described heating unit is made up of primary heater and secondary heater that correspondence is arranged on water tank water intake district and exhalant region position; Described control system is made up of second temperature sensor and a flow sensor of governor circuit, first temperature sensor that detects water tank water intake district water temperature, detection water tank exhalant region water temperature; Described first temperature sensor is arranged near the primary heater, and described second temperature sensor is arranged near the secondary heater, and described sensing flux device is arranged on the trunk water route of electric heater; Whether governor circuit reaches predetermined minimum according to the output signal of sensing flux device is judged that electric heater is in water storage keeping warm mode or user mode; When electric heater was in the water storage keeping warm mode, secondary heater was not worked; Governor circuit judges according to the output signal of first temperature sensor whether water tank water intake district water temperature reaches the water tank heat preserving temperature, when not being higher than the water tank heat preserving temperature as if water tank water intake district water temperature, and primary heater work; If when water tank water intake district water temperature was higher than the water tank heat preserving temperature, primary heater was not worked; When electric heater was in user mode, governor circuit changed control primary heater and secondary heater alternation according to the water temperature of water tank; When electric heater is brought into use, secondary heater work; Governor circuit judges according to the output signal of second temperature sensor whether the water temperature of water tank exhalant region reaches maximum water temperature; If when the water temperature of water tank exhalant region was not less than maximum water temperature, secondary heater was not worked, and switches to primary heater work; If when water tank water intake district water temperature was higher than the water tank heat preserving temperature when switching, primary heater was not worked yet.
10. electric heating system according to claim 9 is characterized in that: described governor circuit is set three kinds of heating modes, and every kind of heating mode is set corresponding pattern selected temperature, water tank heat preserving temperature and maximum water temperature; Water inlet pipe place at water tank also is provided with three-temperature sensor, and governor circuit compares according to the signal of three-temperature sensor and the analog value of pattern selected temperature, enables corresponding heating mode according to comparative result.
11. according to claim 9 or 10 described electric heating systems, it is characterized in that: described water tank is made up of first inner bag and second inner bag that connect each other, and primary heater and secondary heater relative set are in first inner bag and second inner bag.
12. electric heating system according to claim 11 is characterized in that: also be provided with hold secondary heater and communicate with water tank help heat cup, the hot water outlet of water tank and the second temperature sensor correspondence are arranged on and help heat cup place.
13. according to claim 9 or 12 described electric heating systems, it is characterized in that: described water route by-pass valve control is for mixing water valve, and a water entering section of this mixed water valve is connected with water inlet pipe, and another water entering section is connected with the outlet conduit of water tank.
14. electric heating system according to claim 13, it is characterized in that: described governor circuit is provided with timing module, governor circuit is closed enabling signal into this timing module with primary heater, after this timing module starts, still when being in the water storage keeping warm mode, governor circuit is closed the electric heating part automatically up to the delay value electric heater of setting.
15. according to claim 9 or 14 described electric heating systems, it is characterized in that: governor circuit also is provided with memory module, described memory module is preserved the operation parameter of electric heater the last time, calls institute's save value when starting once more.
CNB200610033005XA 2006-01-16 2006-01-16 Energy saving controlling method for electric water heater, and electrically heating system Expired - Fee Related CN100467972C (en)

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CN102374648A (en) * 2010-08-20 2012-03-14 王焱 Electric water heater
CN102494160A (en) * 2011-12-12 2012-06-13 湖北优佰瑞科技有限公司 Constant temperature water outlet controller and constant temperature water supply system
CN103604209A (en) * 2013-11-27 2014-02-26 中山华帝燃具股份有限公司 Electric water heater capable of automatically recognizing environmental temperature
CN104896649B (en) * 2014-03-05 2018-04-27 珠海格力电器股份有限公司 The control method and system of air-conditioning system water outlet design temperature
CN107314549A (en) * 2016-04-26 2017-11-03 博西华电器(江苏)有限公司 Water heater and its control method and server
CN107314548A (en) * 2016-04-26 2017-11-03 博西华电器(江苏)有限公司 Water heater and its control method
CN107606780A (en) * 2017-10-25 2018-01-19 广东万和新电气股份有限公司 Water heater and its control method
TWI679387B (en) * 2018-01-12 2019-12-11 台灣櫻花股份有限公司 Seasonal automatic temperature control method of hot-water heater

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