CN100458610C - Hot-water direct-supplying device of electric water-tank - Google Patents
Hot-water direct-supplying device of electric water-tank Download PDFInfo
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- CN100458610C CN100458610C CNB2006101508187A CN200610150818A CN100458610C CN 100458610 C CN100458610 C CN 100458610C CN B2006101508187 A CNB2006101508187 A CN B2006101508187A CN 200610150818 A CN200610150818 A CN 200610150818A CN 100458610 C CN100458610 C CN 100458610C
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 251
- 238000007493 shaping process Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims description 13
- 230000003321 amplification Effects 0.000 claims description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 238000003287 bathing Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000008400 supply water Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 206010060904 Freezing phenomenon Diseases 0.000 description 1
- 235000019013 Viburnum opulus Nutrition 0.000 description 1
- 244000071378 Viburnum opulus Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention releases to a new kind of electrical ware tank in which there is a hot water feedway that is to supply the hot water for consumer with not wasting the cold water in the hot-water pipe. The hot water feedway concludes sub control, keyboard circuit, display circuit, control driven circuit, signal amplifier, shaping circuit, A/D translation circuit, current switch S, temperature sensor W1, temperature sensor W2, temperature sensor W3, water-level sensor H1, electric control valve Y1, electric tee control valve Y2, electric control valve Y3, pump M and heater band. The original hot water feedway can directly supply hot water to consumer with not wasting the cold water in the hot-water pipe, in the meantime, it is useful for consumer to save water rate and power rate so that to economize water resource for the country.
Description
(1) technical field
The present invention relates to a kind of electric water tank, particularly a kind ofly do not waste the cold water that retains in the hot-water line directly provides hot water for the user hot-water direct-supplying device of electric water-tank.
(2) background technology
The user when the hot water that uses general water heater to provide, often all to bleed off the cold water that retains in the hot-water line earlier after, just can emit hot water.When intermittently using hot water, ducted hot water can cool off again very soon in the time of intermittently, intermittently after time spent again, also the water that cools off in the pipeline to be bled off, cause the waste of great lot of water resources.Therefore, exhausted large user only is used for water heater concentrating the situation of taking hot water, the user is for reducing the waste of water resource, when taking hot water on a small quantity, often do not adopt the hot water in the water heater, cause this life of water heater easily the energy fail to be fully played, the utilization factor of water heater is reduced; On the other hand, the water heater water intake conduit has cold water in paying attention to, easily freeze when winter temperature is low and stop up or burst water intake conduit, though portion of hot hydrophone pipe laying emptier, but there is major defect, exhaust water takeout pipe again after each water intaking is finished, and the water of intake pipe inside continues to retain the cold water elder generation artificial situation when causing water waste and next time to use without use between removal period.
(3) summary of the invention
The object of the present invention is to provide a kind of cold water that water heater is retained in the water pipe between the hot water terminal (for example hot water tap, shower nozzle), be back to electric water tank, the hot water that water heater is confessed is directly delivered to the water terminal, the hot water terminal needn't bleed off cold water earlier, just can directly obtain the hot-water direct-supplying device of electric water-tank of hot water.
The object of the present invention is achieved like this: it comprises microcontroller, keyboard circuit, display circuit, control Driver Circuit, signal amplifies, shaping circuit, the A/D change-over circuit, water flow switch S, the first temperature sensor W1, the second temperature sensor W2, three-temperature sensor W3, level sensor H1, the first electrically-controlled valve Y1, threeway electrically-controlled valve Y2, the second electrically-controlled valve Y3, water pump M and heating tape, the first temperature sensor W1, the second temperature sensor W2 and three-temperature sensor W3 amplify through signal, shaping circuit connects the A/D change-over circuit to microcontroller, water flow switch S and level sensor H1 amplify through signal, shaping circuit is to microcontroller, microcontroller connects control Driver Circuit to the first electrically-controlled valve Y1, threeway electrically-controlled valve Y2, the second electrically-controlled valve Y3, water pump M and heating tape, display circuit connects microcontroller, microcontroller connects keyboard circuit, water pump M links to each other with water flow switch S and is installed in water tank inside, water flow switch S simultaneously connects control panel, one side connects the water tank outer water tube, the heating tape is installed on the water pipe between water tank and the water heater, the first temperature sensor W1 is installed on water heater water delivering orifice place, the second temperature sensor W2 is installed on the hot water tap place, three-temperature sensor W3 is installed on bathing shower nozzle place, level sensor H1 is arranged at water tank inside, the first electrically-controlled valve Y1 is arranged at bathing shower nozzle place, threeway electrically-controlled valve Y2 is arranged at the hot water tap place, the second electrically-controlled valve Y3 is arranged at the cold water faucet place, utilize water flow switch S, the first temperature sensor W1, the signal that the second temperature sensor W2 gathers, handle through microcontroller, produce control signal, the duty of control electrically-controlled valve and water pump M.
The present invention also has some architectural features like this:
1, microcontroller, control Driver Circuit, signal amplification, shaping circuit and A/D change-over circuit are arranged on the control panel of water tank inside.
2, the water tank surface is provided with control panel, and control panel is provided with water pump pressurization gear, keyboard circuit and display circuit.
The present invention uses time-division three kinds of situations:
First kind of situation: retain cold water (user uses hot water long situation break time) in water heater heat supply water, the water pipe
After the user opens the hot water tap, water flow switch S action, the first temperature sensor W1 sends high water temperature signal (when water heater has the hot water source), the water temperature signal that the second temperature sensor W2 sends is significantly less than the water temperature signal that the first temperature sensor W1 sends, and electric water tank water storage water level is up to standard, then drive threeway electrically-controlled valve Y2 and make the C-B end be communicated with (make the cold water that retains in the water pipe, be back to electric water tank), water pump M is provided with work by high tap position; After the second temperature sensor W2 sends the signal of water temperature a little less than temperature sensor W1, drive threeway electrically-controlled valve Y2 the A-C end is communicated with, the gear engaged that water pump M is provided with by the user, the hot water tap goes out hot water; The user closes the hot water tap, and water flow switch S resets, and water pump M quits work;
If the user selects to use the ribbon heater, the temperature signal that the ribbon heater is gathered by the first temperature sensor W1, the second temperature sensor W2 is controlled, as the first temperature sensor W1, when the second temperature sensor W2 provides the high-temperature signal simultaneously, the ribbon heater heating work, when the user does not use hot water for a long time, then the first temperature sensor W1, the second temperature sensor W2 provide the low temperature signal simultaneously, and the ribbon heater quits work;
Second kind of situation: nothing retains cold water (user uses hot water short situation break time) in water heater heat supply water, the water pipe
The user opens the hot water tap, water flow switch S moves (user need use hot water), the first temperature sensor W1 sends high water temperature signal, illustrate that water heater has the hot water source, the water temperature signal that the second temperature sensor W2 sends approaches the water temperature signal that W1 sends, and drives threeway electrically-controlled valve Y2 the A-C end is communicated with, when electric water tank water storage water level is up to standard, the gear engaged that water pump M is provided with by the user, the hot water tap goes out hot water; The user closes the hot water tap, and water flow switch S resets, and water pump M quits work;
If the user selects to use the ribbon heater, the ribbon heater is controlled by the first temperature sensor W1, the second temperature sensor W2 temperature signal, as the first temperature sensor W1, when the second temperature sensor W2 provides the high-temperature signal simultaneously, and the ribbon heater heating work; When the user did not use hot water for a long time, the first temperature sensor W1, the second temperature sensor W2 provided the low temperature signal simultaneously, and the ribbon heater quits work;
The third situation: not heat supply of water heater water retains cold water in the water pipe
The user opens the hot water tap, water flow switch S moves (user need use cold water), the first temperature sensor W1 sends low water temperature signal, illustrate that water heater does not have the hot water source, driving threeway electrically-controlled valve Y2 is communicated with the A-C end, electricity water tank water storage water level is up to standard, the gear engaged that water pump M is provided with by the user, and the hot water tap goes out cold water; The user closes the hot water tap, and water flow switch S resets, and water pump M quits work, even this kind situation user selects to use the ribbon heater, because of the first temperature sensor W1, the second temperature sensor W2 provide the low temperature signal simultaneously, so do not work in the ribbon heater.
Feature of the present invention is:
(1) signal that utilizes water flow switch S, the first temperature sensor W1, the second temperature sensor W2 to gather is handled through microcontroller, produces control signal, the duty of control electrically-controlled valve and water pump M, make user hot water effluent terminal, when water heater heat supply water, only go out hot water and do not go out cold water.
(2) for after making the hot water terminal be interrupted use hot water at short notice, can provide hot water immediately when opening the hot water terminal once more, hot water line between water tank and water heater adopts insulation and adds the ribbon heater and handles, and the duty of ribbon heater is provided with on electric water tank control panel as required by the user.
Advantage of the present invention has:
(1) hot water terminal (for example: hot water tap, shower nozzle etc.) all only goes out hot water and does not go out cold water under the situation of heat supply water;
(2) hot water confessed of water heater is directly delivered to the water terminal, and the hot water terminal needn't bleed off cold water earlier, just can directly obtain hot water, has saved the user and has waited for the time that retains cold water in the emptying hot-water line;
(3) the present invention's cold water that water heater is retained in the water pipe between the hot water terminal (for example hot water tap, shower nozzle) is back to electric water tank, has saved electric energy and water resource;
(4) the present invention can be used for various water heaters, is particularly suitable for solar water heater, can effectively prevent water pipe between heat collectors for solar water heater and the water tank because of the easily freezing phenomenon of water is arranged, and save water resource therebetween.
The hot water direct-furnish function of the present invention original creation can be directly for the user provides hot water, and does not waste the cold water that retains in the hot-water line, do not influence provide hot water for the user in, saved user's the water rate and the electricity charge, also saved precious water resource for country.
(4) description of drawings
Fig. 1 is a principle schematic of the present invention;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is central authorities' control main circuit synoptic diagram of the embodiment of the invention 1;
Fig. 4 is keyboard, the display circuit synoptic diagram of the embodiment of the invention 1;
Fig. 5 is central authorities' control main circuit synoptic diagram of the embodiment of the invention 2;
Fig. 6 is keyboard, the display circuit synoptic diagram of the embodiment of the invention 2.
(5) embodiment
In conjunction with Fig. 1-2, the present invention includes microcontroller, keyboard circuit, display circuit, control Driver Circuit, signal amplifies, shaping circuit, the A/D change-over circuit, water flow switch S, the first temperature sensor W1, the second temperature sensor W2, three-temperature sensor W3, level sensor H1, the first electrically-controlled valve Y1, threeway electrically-controlled valve Y2, the second electrically-controlled valve Y3, water pump M and heating tape, the first temperature sensor W1, the second temperature sensor W2 and three-temperature sensor W3 amplify through signal, shaping circuit connects the A/D change-over circuit to microcontroller, water flow switch S and level sensor H1 amplify through signal, shaping circuit is to microcontroller, microcontroller connects control Driver Circuit to the first electrically-controlled valve Y1, threeway electrically-controlled valve Y2, the second electrically-controlled valve Y3, water pump M and heating tape, display circuit connects microcontroller, and microcontroller connects keyboard circuit.Microcontroller, control Driver Circuit, signal amplification, shaping circuit and A/D change-over circuit are arranged on the control panel of water tank inside, and water pump M links to each other with water flow switch S and is installed in water tank inside, and water flow switch S simultaneously connects control panel, and one side connects outer water tube.The water tank surface is provided with control panel, and control panel is provided with water pump pressurization gear, keyboard circuit and display circuit.The heating tape is installed on the water pipe between water tank and the water heater.The first temperature sensor W1 is installed on water heater water delivering orifice place, the second temperature sensor W2 is installed on the hot water tap place, three-temperature sensor W3 is installed on bathing shower nozzle place, level sensor H1 is arranged at water tank inside, the first electrically-controlled valve Y1 is arranged at bathing shower nozzle place, threeway electrically-controlled valve Y2 is arranged at the hot water tap place, and the second electrically-controlled valve Y3 is arranged at the cold water faucet place.
Embodiment 1:
The central control circuit of control panel comprises signal amplification unit, shaping unit, AD conversion unit, micro-control unit, control drive unit in the present embodiment.Be connected AD conversion unit behind the first temperature sensor W1, the second temperature sensor W2 and three-temperature sensor W3 are connected control panel by cable signal amplification unit and the shaping unit, AD conversion unit connects micro-control unit, level sensor H1 and water flow switch directly are connected micro-control unit after cable is connected signal amplification unit and shaping unit, micro-control unit connects display unit and keyboard unit on electrically-controlled valve unit, water pump unit and the control panel through control drive unit by cable.
In conjunction with Fig. 3, the first temperature sensor W1 connects resistance R 17, R25, R26, the signal that potentiometer VR4 and amplifier IC13A form amplifies, 1 pin of shaping circuit connection mode number conversion IC circuit 3 chips, the second temperature sensor W2 connects resistance R 18, R2, R3, the signal that potentiometer VR5 and amplifier IC12A form amplifies, 2 pin of shaping circuit connection mode number conversion IC circuit 3 chips, temperature sensor W3 connects resistance R 24, R4, R11, the signal that potentiometer VR6 and amplifier IC12B form amplifies, 3 pin of shaping circuit connection mode number conversion IC circuit 3 chips, the 13REF+ of IC3 chip, the 14REF-pin connects power supply and ground by capacitor C 3 and E2,20 pin connect power supply, 10 pin connect power supply and ground by capacitor C 9 and E1, function pin 16-18 connects 2 of IC4 chip respectively, 5, the 5-7 pin of 6 pin and microcontroller chip IC 1, the 19BOC of IC3 chip, the 15CS pin connects 4 of microcontroller chip IC 1 respectively, 3 pin, 3 of IC4 chip, 8 pin connect power supply, 4 pin ground connection, 1 pin connects 8 pin of microcontroller chip IC 1,7 pin connect and draw resistance R 1 to VCC to arrive 15 pin of microcontroller chip IC 1 again, level sensor H1 connects diode D3-D6, resistance R 13, R15, R16, non-gate ic7 A, IC7B and capacitor C 14, the signal that E12 forms amplifies, shaping circuit connects 15 pin of microcontroller chip IC 1, water flow switch S connects 1 pin of microcontroller chip IC 1, water pump M simultaneously connects power supply, one side is connected 16 pin of control Driver Circuit IC14 chip by relay K 3, the first electrically-controlled valve Y1 is an electric flow control valve, 15 pin that connect control Driver Circuit IC14 chip, threeway electrically-controlled valve Y2 connects 13 of control Driver Circuit IC14 chip, 14 pin, the second electrically-controlled valve Y3 connects 12 pin of control Driver Circuit IC14 chip, heating tape G simultaneously connects power supply, one side connects relay K 4 and links to each other with 11 pin of control Driver Circuit IC14 chip, 9 pin of control Driver Circuit IC14 chip connect power supply, 8 pin ground connection, the 5-6 pin is respectively through not gate U2E, U2F connects the read/write 17 of microcontroller chip IC 1,16 pin, the 1-4 pin of IC14 chip connects the 25-28 pin of master chip IC1 respectively through not gate U2A-U2D, 18 of microcontroller chip IC 1,19 pin meet crystal oscillating circuit JT1, capacitor C 1 and C2 are to ground, 31 pin connect power supply, 21-24,32,33 pin connect the 3-8 pin of keyboard circuit J12 respectively, 1 of J12,2 pin connect power supply, 9,10 pin ground connection, device P1, B1, electric capacity E3, C11, E6, LM7805CT sheet V1, electric capacity E4 and C10 constitute power circuit.
In conjunction with Fig. 4, button S1-S8 is a keyboard input button, resistance R 3-R10 is a current-limiting resistance, button S1-S8 connects resistance R 3-R10 respectively, arrange the 10-17 pin of the 2-9 pin Access Control chip U1 of R12 by pull down resistor, the 1 pin ground connection of pull down resistor row R12, light emitting diode L1 is a power light, connect power supply by resistance R 2, LED pipe group U2, U3 is a light-emitting diode display spare, common formation display circuit connects the 18-25 pin of button and control chip U1 respectively, one side is linked to each other respectively by bus when connecting button S1-S8, and another side connects button by resistance R 1, and the 6-9 pin of control chip U1 is the 4-7 pin of interface unit J1 respectively, 1-2,28 pin connect power supply, 4 pin ground connection, the 27RC pin connects resistance R 11 and arrives ground to power supply and capacitor C 1, the 1-3 pin of device J1 connects power supply, 8-10 pin ground connection, electric capacity E1, C1-C3 is a shunt capacitance.
Embodiment 2:
The present embodiment central control circuit comprises signal amplification unit, shaping unit, micro-control unit, control drive unit.Be connected micro-control unit behind the first temperature sensor W1, the second temperature sensor W2 and three-temperature sensor W3 are connected control panel by cable signal amplification unit and the shaping unit, level sensor H1 and water flow switch are connected micro-control unit after directly being connected signal amplification unit and shaping unit by cable, and micro-control unit connects display unit, keyboard unit on electrically-controlled valve unit, water pump unit and the control panel through control drive unit.
In conjunction with Fig. 5, level sensor H1 connects not gate IC1A, IC1B, resistance R 2, R4, R15, diode D5-D8, capacitor C 9, the peripheral signal that E5 forms is amplified, shaping circuit connects 13 pin of microcontroller chip IC 5 chips, temperature sensor W1 connects amplifier IC3A, resistance R 16, R19, R20, the peripheral signal that potentiometer VR4 forms is amplified, shaping circuit connects 18 pin of microcontroller chip IC 5 chips, temperature sensor W2 connects amplifier IC2A, resistance R 17, R21, R22, the peripheral signal that potentiometer VR5 forms is amplified, shaping circuit connects 17 pin of microcontroller chip IC 5 chips, temperature sensor W3 connects amplifier IC2B, resistance R 18, R23, R24, the peripheral signal that potentiometer VR6 forms is amplified, shaping circuit connects 16 pin of microcontroller chip IC 5 chips, water flow switch S connects 4 pin of microcontroller chip IC 5, water pump M simultaneously connects interchange AC220V power supply, one side is connected 16 pin of control Driver Circuit IC4 chip by relay K 1, electric flow control electrically-controlled valve Y1 connects 15 pin of control Driver Circuit IC4 chip, threeway electrically-controlled valve Y2 connects 13 of control Driver Circuit IC4 chip, 14 pin, electrically-controlled valve Y3 connects 12 pin of control Driver Circuit IC4 chip, heating tape G simultaneously connects interchange AC220V power supply, one side connects relay K 2 and links to each other with 11 pin of control Driver Circuit IC14 chip, 9 pin of control Driver Circuit IC14 chip connect power supply, 8 pin ground connection, the 1-6 pin connects 15 of control Driver Circuit IC12 chip through not gate U2A-U2F respectively, the 1-5 pin, 10 pin of control Driver Circuit IC12 chip connect power supply, 13 pin ground connection, 11,14 pin connect 2 of microcontroller chip IC 5 respectively, 1 pin, 6 of microcontroller chip IC 5,7 pin meet crystal oscillating circuit JT1, capacitor C 1 and C2 are to ground, 8,11,12,14,19 and 20 pin connect the 3-8 pin of keyboard circuit J12 respectively, 1 of J12,2 pin connect power supply, 9,10 pin ground connection, device P1, B1, electric capacity E1, C6, E3, LM7805CT sheet V1, electric capacity E2 and C3 constitute power circuit.
In conjunction with Fig. 6, button S11-S18 is a keyboard input button, resistance R 103-R110 is a current-limiting resistance, button S11-S18 connects resistance R 103-R110 respectively, arrange the 10-17 pin of the 2-9 pin Access Control chip U11 of R112 again by pull down resistor, the 1 pin ground connection of pull down resistor row R112, light emitting diode L11 is a power light, connect power supply by resistance R 102, LED pipe group U12, U13 is a light-emitting diode display spare, common formation display circuit connects the 18-25 pin of button and control chip U11 respectively, one side is linked to each other respectively by bus when connecting button S11-S18, another side connects button by resistance R 101, the 6-9 pin of control chip U11 is the 3-8 pin of interface unit J11 respectively, 1-2,28 pin connect power supply, 4 pin ground connection, the 27RC pin connects resistance R 111 and arrives ground to power supply and capacitor C 11, the 1-2 pin of device J11 connects power supply, 9-10 pin ground connection, 3 of 7-8 pin difference interface unit X2,5,6 pin, 4 of device X2,9 pin ground connection, 12 pin meet power supply VCC by resistance R 98, electric capacity E11, C11-C13 is a shunt capacitance.
Claims (3)
1, a kind of hot-water direct-supplying device of electric water-tank, it is characterized in that: it comprises microcontroller, keyboard circuit, display circuit, control Driver Circuit, signal amplifies, shaping circuit, the A/D change-over circuit, water flow switch (S), first temperature sensor (W1), second temperature sensor (W2), three-temperature sensor (W3), level sensor (H1), first electrically-controlled valve (Y1), threeway electrically-controlled valve (Y2), second electrically-controlled valve (Y3), water pump (M) and heating tape, first temperature sensor (W1), second temperature sensor (W2) and three-temperature sensor (W3) amplify through signal, shaping circuit connects the A/D change-over circuit to microcontroller, water flow switch (S) and level sensor (H1) amplify through signal, shaping circuit is to microcontroller, microcontroller connects control Driver Circuit to first electrically-controlled valve (Y1), threeway electrically-controlled valve (Y2), second electrically-controlled valve (Y3), water pump (M) and heating tape, display circuit connects microcontroller, microcontroller connects keyboard circuit, water pump (M) links to each other with water flow switch (S) and is installed in water tank inside, water flow switch (S) one side connects control panel, one side connects the water tank outer water tube, the heating tape is installed on the water pipe between water tank and the water heater, first temperature sensor (W1) is installed on water heater water delivering orifice place, second temperature sensor (W2) is installed on the hot water tap place, three-temperature sensor (W3) is installed on bathing shower nozzle place, level sensor (H1) is arranged at water tank inside, first electrically-controlled valve (Y1) is arranged at bathing shower nozzle place, threeway electrically-controlled valve (Y2) is arranged at the hot water tap place, second electrically-controlled valve (Y3) is arranged at the cold water faucet place, utilize water flow switch (S), first temperature sensor (W1), the signal that second temperature sensor (W2) is gathered, handle through microcontroller, produce control signal, the duty of control electrically-controlled valve and water pump (M).
2, a kind of hot-water direct-supplying device of electric water-tank according to claim 1 is characterized in that: microcontroller, control Driver Circuit, signal amplification, shaping circuit and A/D change-over circuit are arranged on the control panel of water tank inside.
3, a kind of hot-water direct-supplying device of electric water-tank according to claim 1, it is characterized in that: the water tank surface is provided with control panel, and control panel is provided with water pump pressurization gear, keyboard circuit and display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101508187A CN100458610C (en) | 2006-09-27 | 2006-09-27 | Hot-water direct-supplying device of electric water-tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101508187A CN100458610C (en) | 2006-09-27 | 2006-09-27 | Hot-water direct-supplying device of electric water-tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1936740A CN1936740A (en) | 2007-03-28 |
| CN100458610C true CN100458610C (en) | 2009-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101508187A Expired - Fee Related CN100458610C (en) | 2006-09-27 | 2006-09-27 | Hot-water direct-supplying device of electric water-tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100458610C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102900A (en) * | 2011-03-14 | 2011-06-22 | 李耀强 | Water heater without outflow of cold water |
| CN102226581A (en) * | 2011-04-15 | 2011-10-26 | 李耀强 | Control method of water heater |
| CN105202769B (en) * | 2015-10-09 | 2017-11-17 | 六安市同心畅能电子科技有限公司 | Forced-ventilated gas water heater shower house tap preheating device |
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| CN200969037Y (en) * | 2006-09-27 | 2007-10-31 | 孟东昕 | Hot-water direct supplying device for electrical water tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3561132B2 (en) * | 1997-11-28 | 2004-09-02 | 三菱電機株式会社 | Electric water heater |
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| Publication number | Publication date |
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| CN1936740A (en) | 2007-03-28 |
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