CN201955649U - Control circuit with variable-lift function for gas water heater - Google Patents
Control circuit with variable-lift function for gas water heater Download PDFInfo
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- CN201955649U CN201955649U CN2011200434977U CN201120043497U CN201955649U CN 201955649 U CN201955649 U CN 201955649U CN 2011200434977 U CN2011200434977 U CN 2011200434977U CN 201120043497 U CN201120043497 U CN 201120043497U CN 201955649 U CN201955649 U CN 201955649U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 12
- 239000007789 gas Substances 0.000 claims description 13
- 239000000567 combustion gas Substances 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
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Abstract
The utility model relates to a control circuit of gas heater area variable lift function, characteristics are: the gas electronic proportional valve comprises a display operation unit, a central control system unit for receiving input signals of the display operation unit, a proportional valve driving circuit unit for receiving the input signals of the central control system unit, and a gas electronic proportional valve driven by the proportional valve driving circuit unit. When different product liter numbers are required to be selected, the central control system unit can automatically adjust the maximum current of the gas electronic proportional valve unit according to the liter number required to be selected by a user by only closing the water inlet valve or the water outlet valve of the product and pressing a liter number selection key on the display operation unit, thereby controlling the maximum heat load of the gas water heater and achieving the purpose of adjusting the product liter number. The utility model provides a user can increase when the water peak, solved original gas heater product and just can not satisfy the technical difficulty of user's demand to satisfy consumer's user demand.
Description
Technical field
The utility model relates to a kind of control field that becomes the gas heater that rises function that has.A kind of gas heater band of saying so more specifically becomes the control circuit that rises function.
Background technology
Domestic gas heater product capacity all is the single number that rises at present, and when the user increased EXIT POINT at water use peak, former gas heater product just can not satisfy user's user demand.
Summary of the invention
The purpose of this utility model is to consider the problems referred to above and provides a kind of simple and reasonable, and in the time of can satisfying the user can increase EXIT POINT when water use peak, and a kind of gas heater band that still can meet user demand becomes the control circuit that rises function.
In order to achieve the above object, the utility model is to realize like this, it is that a kind of gas heater band becomes the control circuit that rises function, it is characterized in that: comprise the display operation unit, receive the central control system unit of display operation cell input signal, receive the proportioning valve drive circuit unit of central control system cell input signal, the proportioning valve drive circuit unit drives combustion gas electronics proportioning valve.
Described central control system unit comprises single-chip microcomputer, and its model is ATMEGA16A-AU.
Described proportioning valve driving circuit comprises the 8th to the 14 resistance, the 6th to the 8th electric capacity, second diode, first triode, second triode and voltage comparator, and the model of voltage comparator is LM393; Wherein an end of the 14 resistance is electrically connected with an end of the 7th electric capacity and "+" input end of voltage comparator respectively, and the other end of the 14 resistance is electrically connected with the 14th pin of single-chip microcomputer, the other end ground connection of the 7th electric capacity; One end of the 6th electric capacity is electrically connected other end ground connection with "-" input end of voltage comparator; One termination power of the 12 resistance, the 13 resistance and the 8th electric capacity (+12V), the output terminal of another termination voltage comparator of the 12 resistance, "-" input end of another termination voltage comparator of the 13 resistance, the other end ground connection of the 8th electric capacity; The negative pole (BLF-) of one termination combustion gas electronics proportioning valve of the tenth resistance and the 11 resistance, the other end ground connection of the tenth resistance, "-" input end of another termination voltage comparator of the 11 resistance; One end of the 9th resistance is electrically connected with the base stage of first triode, and the other end is electrically connected with the collector of second triode; One termination power of the emitter of first triode and the 8th resistance, the collector of first triode connects the negative terminal of second diode, and the base stage of first triode is electrically connected with the other end of the 8th resistance; The base stage of second triode is electrically connected with the output terminal of voltage comparator, the grounded emitter of second triode; The plus earth of second diode, the negative pole of second diode is electrically connected with the positive pole (BLF+) of combustion gas electronics proportioning valve.
Described display operation unit comprises first to the 7th resistance, first to the 5th electric capacity, first diode, second to the 4th light emitting diode, rises number selection key, display screen and LED chip for driving, the model of display screen is HMP012A, and the model of LED chip for driving is TM1623; Wherein first electric capacity and a termination power after second electric capacity is in parallel (+5V), other end ground connection; First resistance, one termination power (+5V), the other end connects the 37th pin of single-chip microcomputer; The 2nd pin of one end LED chip for driving of the 3rd resistance, the other end connects the 37th pin of single-chip microcomputer; The 3rd pin of one termination LED chip for driving of the 4th resistance, the other end connects the 40th pin of single-chip microcomputer; The 4th pin of one termination LED chip for driving of the 5th resistance, the other end connects the 41st of single-chip microcomputer; One end of the 6th resistance connects the 5th pin of LED chip for driving, and the other end connects the 42nd pin of single-chip microcomputer; The 6th pin of second resistance, one termination LED chip for driving, other end ground connection; The 7th, 8,26 pin of LED chip for driving are ground connection simultaneously; The 25th pin of the 3rd electric capacity one end and LED chip for driving be electrically connected and be connected power supply (+5V), the other end ground connection of the 3rd electric capacity; The 4th electric capacity one end connects the 4th pin of LED chip for driving, other end ground connection; The 5th electric capacity one end connects the 5th pin of LED chip for driving, other end ground connection; Rise the 6th pin that number selection key one end connects the LED chip for driving, the other end connects the negative pole of first diode; The 10th pin of display screen connects the positive pole of first diode and the 14th pin of LED chip for driving respectively; The 1st pin of display screen connects the 31st pin of LED chip for driving and the negative pole of second light emitting diode respectively, anodal the 18th pin that connects the LED chip for driving of second light emitting diode; The 2nd pin of display screen connects the 30th pin of LED chip for driving and the negative pole of the 3rd light emitting diode respectively, anodal the 18th pin that connects the LED chip for driving of the 3rd light emitting diode; The 3rd pin of display screen connects the 28th pin of LED chip for driving and the negative pole of the 4th light emitting diode respectively, anodal the 18th pin that connects the LED chip for driving of the 4th light emitting diode.
The utility model advantage compared with prior art is, solved the user can increase EXIT POINT when water use peak the time, solved the technological difficulties that original gas heater product just can not be met consumers' demand, thereby satisfied consumer's user demand.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of display operation unit among Fig. 1;
Fig. 3 is the circuit theory diagrams of central control system unit among Fig. 1;
Fig. 4 is the circuit theory diagrams of proportioning valve drive circuit unit among Fig. 1;
Fig. 5-the 1st is a part of schematic diagram of the utility model user mode one;
Fig. 5-the 2nd is another part schematic diagram of the utility model user mode one;
Fig. 6-the 1st is a part of schematic diagram of the utility model user mode two;
Fig. 6-the 2nd is another part schematic diagram of the utility model user mode two;
Fig. 7-the 1st is a part of schematic diagram of the utility model user mode three;
Fig. 7-the 2nd is another part schematic diagram of the utility model user mode three.
Embodiment
Below in conjunction with the drawings and Examples example this patent is described further.
As shown in Figure 1, it is that a kind of gas heater band becomes the control circuit that rises function, the utility model characteristics are: comprise display operation unit 1, receive the central control system unit 2 of display operation cell input signal, receive the proportioning valve drive circuit unit 3 of central control system cell input signal, the proportioning valve drive circuit unit drives combustion gas electronics proportioning valve.During work, set 3 variable numbers that rise, the number that rises of display operation unit 1 acquiescence of initially starting shooting is 11 liters, and the maximum current of corresponding central control system unit 2 outputs is that I proportioning valve maximum current is I.
As shown in Figure 3, central control system unit 2 comprises single-chip microcomputer U1, and its model is ATMEGA16A-AU.
As shown in Figure 2, the proportioning valve driving circuit comprises the 8th to the 14 resistance R 8-R14, the 6th to the 8th capacitor C 6-C8, the second diode D2, the first triode Q1, the second triode Q2 and voltage comparator U8B, and the model of voltage comparator is LM393; Wherein an end of the 14 resistance R 14 is electrically connected with an end of the 7th capacitor C 7 and "+" input end of voltage comparator U8B respectively, and the other end of the 14 resistance is electrically connected with the 14th pin of single-chip microcomputer U1, the other end ground connection of the 7th capacitor C 7; One end of the 6th capacitor C 6 is electrically connected other end ground connection with "-" input end of voltage comparator U8B; One termination power+the 12V of the 12 resistance R the 12, the 13 resistance R 13 and the 8th capacitor C 8, the output terminal of another termination voltage comparator U8B of the 12 resistance R 12, "-" input end of another termination voltage comparator U8B of the 13 resistance R 13, the other end ground connection of the 8th capacitor C 8; The negative pole BLF-of one termination combustion gas electronics proportioning valve of the tenth resistance R 10 and the 11 resistance R 11, the other end ground connection of the tenth resistance R 10, "-" input end of another termination voltage comparator U8B of the 11 resistance R 11; One end of the 9th resistance R 9 is electrically connected with the base stage of the first triode Q1, and the other end is electrically connected with the collector of the second triode Q2; One termination power of the emitter of the first triode Q1 and the 8th resistance R 8+24V, the collector of the first triode Q1 connects the negative terminal of the second diode D2, and the base stage of the first triode Q2 is electrically connected with the other end of the 8th resistance R 8; The base stage of the second triode Q2 is electrically connected with the output terminal of voltage comparator U8B, the grounded emitter of the second triode Q2; The plus earth of the second diode D2, the negative pole of the second diode D2 is electrically connected with the anodal BLF+ of combustion gas electronics proportioning valve.
As shown in Figure 4, display operation unit 1 comprises first to the 7th resistance R 1-R7, first to the 5th capacitor C 1-C5, the first diode D1, second to the 4th LED 2-LED4, rises number selection key SW4, display screen LED1 and LED chip for driving IC1, the model of display screen LED1 is HMP012A, and the model of LED chip for driving IC1 is TM1623; Wherein first capacitor C 1 and second capacitor C 2 back in parallel, one termination power+5V, other end ground connection; First resistance R, 1 one termination powers+5V, the other end connects the 37th pin of single-chip microcomputer U1; The 2nd pin of one termination LED chip for driving IC1 of the 3rd resistance R 3, the other end connects the 37th pin of single-chip microcomputer U1; The 3rd pin of one termination LED chip for driving IC1 of the 4th resistance R 4, the other end connects the 40th pin of single-chip microcomputer U1; The 4th pin of one termination LED chip for driving IC1 of the 5th resistance R 5, the other end meets the 41st of single-chip microcomputer U1; One end of the 6th resistance R 6 connects the 5th pin of LED chip for driving IC1, and the other end connects the 42nd pin of single-chip microcomputer U1; The 6th pin of second resistance R, 2 one termination LED chip for driving IC1, other end ground connection; The 7th, 8,26 pin of LED chip for driving IC1 are ground connection simultaneously; The 25th pin of the 3rd capacitor C 3 one ends and LED chip for driving IC1 is electrically connected and is connected power supply+5V, the other end ground connection of the 3rd electric capacity; The 4th capacitor C 4 one ends connect the 4th pin of LED chip for driving IC1, other end ground connection; The 5th capacitor C 5 one ends connect the 5th pin of LED chip for driving IC1, other end ground connection; Rise the 6th pin that number selection key SW4 one end connects LED chip for driving IC1, the other end connects the negative pole of the first diode D1; The 10th pin of display screen LED1 connects the positive pole of the first diode D1 and the 14th pin of LED chip for driving IC1 respectively; The 1st pin of display screen LED1 connects the 31st pin of LED chip for driving IC1 and the negative pole of second LED 2 respectively, second LED, 2 anodal the 18th pin that connect LED chip for driving IC1; The 2nd pin of display screen LED1 connects the 30th pin of LED chip for driving IC1 and the negative pole of the 3rd LED 3 respectively, the 3rd LED 3 anodal the 18th pin that connect LED chip for driving IC1; The 3rd pin of display screen LED1 connects the 28th pin of LED chip for driving IC1 and the negative pole of the 4th LED 4 respectively, the 4th LED 4 anodal the 18th pin that connect LED chip for driving IC1.
During work, three kinds of states are arranged, first kind of state is shown in Fig. 5-1,5-2, and it is the A liter that system boot acquiescence water heater rises number, and the electric current that flow to combustion gas electronics proportioning valve unit 3 this moment is I; When the user need select B to rise, then need to press and rise number options button (SW1), the 14th pin senses of LED chip for driving IC1 is pressed to rising number options button SW1 afterwards, and the 2nd pin by LED chip for driving IC1 is transferred to single-chip microcomputer U1 with this signal; After single-chip microcomputer U1 receives this signal, the 14th pin transmission by LED chip for driving IC1 feeds back signal to display screen LED1,3 pin of display screen are exported a low level, this moment, the 28th pin of LED chip for driving IC1 was changed to low level, the 4th LED 4 that corresponding B rises is lighted, 1 pin of display screen is exported a high level simultaneously, and the 31st pin of LED chip for driving IC1 is changed to high level, and second LED 2 that corresponding A rises extinguishes.Meanwhile, the pwm signal that single-chip microcomputer U1 is 0.8I with corresponding proportioning valve electric current is transferred to "+" input end of voltage comparator, through the voltage ratio of over-voltage comparator U8B after, again after the dividing potential drop effect through the first triode Q1 and the second triode Q2, make the voltage that is input to the proportioning valve two ends produce variation, when the proportioning valve electric current becomes original A and rises 80% of electric current I, rise thermal load thereby make the maximum heating load of water heater just become B.
Second kind of state shown in Fig. 6-1,6-2, when the user then press rise number options button SW1 after, the 14th pin senses of LED chip for driving IC1 is pressed to rising number options button SW1, the 2nd pin by LED chip for driving IC1 is transferred to single-chip microcomputer U1 with this signal; After single-chip microcomputer U1 receives this signal, the 14th pin transmission by LED chip for driving IC1 feeds back signal to display screen LED1,30 pin of display screen are exported a low level, this moment, the 30th pin of LED chip for driving IC1 was changed to low level, the 3rd LED 3 that corresponding C rises is lighted, the 28th pin of LED chip for driving IC1 is changed to high level simultaneously, and the 4th LED 4 that corresponding B rises extinguishes.Meanwhile, the pwm signal that single-chip microcomputer U1 is 0.7I with corresponding proportioning valve electric current is transferred to "+" input end of voltage comparator, through the voltage ratio of over-voltage comparator U8B after, again after the dividing potential drop effect through the first triode Q1 and the second triode Q10, make the voltage that is input to the proportioning valve two ends produce variation, when the proportioning valve electric current becomes original A and rises 70% of electric current I, rise thermal load thereby make the maximum heating load of water heater just become C.
The third state shown in 7-1,7-2 figure, when the user press once more rise number options button SW1 after, the 14th pin senses of LED chip for driving IC1 is pressed to rising number options button SW1, the 2nd pin by LED chip for driving IC1 is transferred to single-chip microcomputer U1 with this signal; After single-chip microcomputer U1 receives this signal, the 14th pin transmission by LED chip for driving IC1 feeds back signal to display screen LED1,1 pin of display screen is exported a low level, this moment, the 31st pin of LED chip for driving IC1 was changed to low level, the secondth LED 2 that corresponding A rises is lighted, 2 pin of display screen are exported a high level simultaneously, and the 30th pin of LED chip for driving IC1 is changed to high level, and the 3rd LED 3 that corresponding C rises extinguishes.Meanwhile, the pwm signal that single-chip microcomputer U1 is I with corresponding proportioning valve electric current is transferred to "+" input end of voltage comparator, through the voltage ratio of over-voltage comparator (U8B) after, again after the dividing potential drop effect through the first triode Q1 and the second triode Q2, make the voltage that is input to the proportioning valve two ends produce variation, the proportioning valve electric current becomes I again, rises thermal load thereby make the maximum heating load of water heater become A again.
Claims (4)
1. a gas heater band becomes the control circuit that rises function, it is characterized in that: comprise display operation unit (1), receive the central control system unit (2) of display operation cell input signal, receive the proportioning valve drive circuit unit (3) of central control system cell input signal, the proportioning valve drive circuit unit drives combustion gas electronics proportioning valve.
2. gas heater band according to claim 2 becomes the control circuit that rises function, and it is characterized in that: described central control system unit (2) comprises single-chip microcomputer (U1), and its model is ATMEGA16A-AU.
3. gas heater band according to claim 1 and 2 becomes the control circuit that rises function, it is characterized in that: described proportioning valve driving circuit comprises the 8th to the 14 resistance (R8-R14), the 6th to the 8th electric capacity (C6-C8), second diode (D2), first triode (Q1), second triode (Q2) and voltage comparator (U8B), and the model of voltage comparator is LM393; Wherein an end of the 14 resistance (R14) is electrically connected with an end of the 7th electric capacity (C7) and "+" input end of voltage comparator (U8B) respectively, the other end of the 14 resistance is electrically connected with the 14th pin of single-chip microcomputer (U1), the other end ground connection of the 7th electric capacity (C7); One end of the 6th electric capacity (C6) is electrically connected other end ground connection with "-" input end of voltage comparator (U8B); One termination power of the 12 resistance (R12), the 13 resistance (R13) and the 8th electric capacity (C8) (+12V), the output terminal of another termination voltage comparator (U8B) of the 12 resistance (R12), "-" input end of another termination voltage comparator (U8B) of the 13 resistance (R13), the other end ground connection of the 8th electric capacity (C8); The negative pole (BLF-) of one termination combustion gas electronics proportioning valve of the tenth resistance (R10) and the 11 resistance (R11), the other end ground connection of the tenth resistance (R10), "-" input end of another termination voltage comparator (U8B) of the 11 resistance (R11); One end of the 9th resistance (R9) is electrically connected with the base stage of first triode (Q1), and the other end is electrically connected with the collector of second triode (Q2); One termination power of the emitter of first triode (Q1) and the 8th resistance (R8) (+24V), the collector of first triode (Q1) connects the negative terminal of second diode (D2), and the base stage of first triode (Q2) is electrically connected with the other end of the 8th resistance (R8); The base stage of second triode (Q2) is electrically connected with the output terminal of voltage comparator (U8B), the grounded emitter of second triode (Q2); The plus earth of second diode (D2), the negative pole of second diode (D2) is electrically connected with the positive pole (BLF+) of combustion gas electronics proportioning valve.
4. gas heater band according to claim 1 and 2 becomes the control circuit that rises function, it is characterized in that: described display operation unit (1) comprises first to the 7th resistance (R1-R7), first to the 5th electric capacity (C1-C5), first diode (D1), second to the 4th light emitting diode (LED2-LED4), rises number selection key (SW4), display screen (LED1) and LED chip for driving (IC1), the model of display screen (LED1) is HMP012A, and the model of LED chip for driving (IC1) is TM1623; Wherein first electric capacity (C1) back in parallel, one termination power with second electric capacity (C2) (+5V), other end ground connection; First resistance (R1) termination power (+5V), the other end connects the 37th pin of single-chip microcomputer (U1); The 2nd pin of one end LED chip for driving (IC1) of the 3rd resistance (R3), the other end connects the 37th pin of single-chip microcomputer (U1); The 3rd pin of one termination LED chip for driving (IC1) of the 4th resistance (R4), the other end connects the 40th pin of single-chip microcomputer (U1); The 4th pin of one termination LED chip for driving (IC1) of the 5th resistance (R5), the other end connects the 41st of single-chip microcomputer (U1); One end of the 6th resistance (R6) connects the 5th pin of LED chip for driving (IC1), and the other end connects the 42nd pin of single-chip microcomputer (U1); The 6th pin of second resistance (R2) termination LED chip for driving (IC1), other end ground connection; The 7th, 8,26 pin of LED chip for driving (IC1) are ground connection simultaneously; The 25th pin of the 3rd electric capacity (C3) end and LED chip for driving (IC1) be electrically connected and be connected power supply (+5V), the other end ground connection of the 3rd electric capacity; The 4th electric capacity (C4) end connects the 4th pin of LED chip for driving (IC1), other end ground connection; The 5th electric capacity (C5) end connects the 5th pin of LED chip for driving (IC1), other end ground connection; Rise the 6th pin that number selection key (SW4) end connects LED chip for driving (IC1), the other end connects the negative pole of first diode (D1); The 10th pin of display screen (LED1) connects the positive pole of first diode (D1) and the 14th pin of LED chip for driving (IC1) respectively; The 1st pin of display screen (LED1) connects the 31st pin of LED chip for driving (IC1) and the negative pole of second light emitting diode (LED2) respectively, anodal the 18th pin that connects LED chip for driving (IC1) of second light emitting diode (LED2); The 2nd pin of display screen (LED1) connects the 30th pin of LED chip for driving (IC1) and the negative pole of the 3rd light emitting diode (LED3) respectively, anodal the 18th pin that connects LED chip for driving (IC1) of the 3rd light emitting diode (LED3); The 3rd pin of display screen (LED1) connects the 28th pin of LED chip for driving (IC1) and the negative pole of the 4th light emitting diode (LED4) respectively, anodal the 18th pin that connects LED chip for driving (IC1) of the 4th light emitting diode (LED4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200434977U CN201955649U (en) | 2011-02-22 | 2011-02-22 | Control circuit with variable-lift function for gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200434977U CN201955649U (en) | 2011-02-22 | 2011-02-22 | Control circuit with variable-lift function for gas water heater |
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| Publication Number | Publication Date |
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| CN201955649U true CN201955649U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200434977U Expired - Lifetime CN201955649U (en) | 2011-02-22 | 2011-02-22 | Control circuit with variable-lift function for gas water heater |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764210A (en) * | 2015-04-28 | 2015-07-08 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and liter changing control device thereof |
| CN105485925A (en) * | 2015-12-30 | 2016-04-13 | 广东万家乐燃气具有限公司 | Variable-litre gas water heater |
| CN107781978A (en) * | 2016-08-26 | 2018-03-09 | 华帝股份有限公司 | Intelligent gas water heater with variable-lift function |
| CN108286820A (en) * | 2017-01-10 | 2018-07-17 | 青岛经济技术开发区海尔热水器有限公司 | Gas heater and control method with multi gear position heat production outlet capacity |
-
2011
- 2011-02-22 CN CN2011200434977U patent/CN201955649U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764210A (en) * | 2015-04-28 | 2015-07-08 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and liter changing control device thereof |
| CN104764210B (en) * | 2015-04-28 | 2017-10-27 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its change rise control device |
| CN105485925A (en) * | 2015-12-30 | 2016-04-13 | 广东万家乐燃气具有限公司 | Variable-litre gas water heater |
| CN107781978A (en) * | 2016-08-26 | 2018-03-09 | 华帝股份有限公司 | Intelligent gas water heater with variable-lift function |
| CN107781978B (en) * | 2016-08-26 | 2023-11-21 | 华帝股份有限公司 | Intelligent gas water heater with variable-lift function |
| CN108286820A (en) * | 2017-01-10 | 2018-07-17 | 青岛经济技术开发区海尔热水器有限公司 | Gas heater and control method with multi gear position heat production outlet capacity |
| CN108286820B (en) * | 2017-01-10 | 2021-01-05 | 青岛经济技术开发区海尔热水器有限公司 | Gas water heater with multi-gear hot water production capacity and control method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
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| CP03 | Change of name, title or address |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Patentee before: Midea Group |
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| CX01 | Expiry of patent term |
Granted publication date: 20110831 |
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| CX01 | Expiry of patent term |