CN-116481188-B - Control method of gas water heater and gas water heater

Abstract

The specification relates to the technical field of water heating devices, and particularly discloses a control method of a gas water heating device and the gas water heating device, wherein the gas water heating device comprises a combustion device, the combustion device comprises at least two groups of burners, the control method of the gas water heating device comprises the steps of determining whether a current required load is in a pre-acquired common load range or not under the condition that a first preset condition is met, if so, controlling burners or burner combinations corresponding to common segments to burn, and the power range corresponding to the common segments comprises the common load range. The constant temperature effect of the water heater can be improved, and user experience is improved.

Inventors

• WANG YILONG
• MA JIANDONG
• LI WEI

Assignees

• 艾欧史密斯(中国)热水器有限公司
• 艾欧史密斯(中国)水系统有限公司

Dates

Publication Date

20260505

Application Date

20230421

Claims (20)

1. 1. The control method of the gas water heating device is characterized by comprising a combustion device, wherein the combustion device comprises at least two groups of combustors, and the control method of the gas water heating device comprises the following steps: Under the condition that a first preset condition is met, determining whether the current required load is in a pre-acquired common load range or not, wherein the common load range is determined based on user water consumption data of the gas water heating device in a preset period, and the user water consumption data in the preset period comprises water inlet temperatures, set temperatures and water inlet flows at a plurality of moments in the preset period; If so, the power range is controlled to comprise the burner or the burner combination corresponding to the common section of the common load range for combustion, and in the combustion process, under the condition that the current required load is changed in the common load range or in the power range corresponding to the common section, the opening degree of the gas proportional valve of the gas water heating device is controlled based on the current required load, and the burner or the burner combination corresponding to the common section is kept for combustion without section switching operation.
2. 2. The method for controlling a gas water heater according to claim 1, wherein the first preset condition includes receiving a water signal from a user.
3. 3. The control method of a gas water heating apparatus according to claim 1, wherein determining whether the current required load is within a pre-acquired common load range comprises: acquiring a common load range corresponding to the gas water heating device; And under the condition that a common load range corresponding to the gas water heating device is obtained, determining whether the current required load is in the common load range.
4. 4. A control method of a gas water heating apparatus according to claim 3, characterized in that the control method of the gas water heating apparatus further comprises: and under the condition that the common load range corresponding to the gas water heating device is not obtained, controlling the combustion device to burn according to a preset segmentation mode.
5. 5. The control method of a gas water heating apparatus according to claim 4, characterized in that the control method of the gas water heating apparatus further comprises: recording water consumption data of a user of the gas water heating device in a preset period under the condition that a common load range corresponding to the gas water heating device is not acquired; and determining a common load range based on the user water data in the preset period.
6. 6. The control method of a gas water heating apparatus according to claim 5, characterized in that the control method of the gas water heating apparatus further comprises: under the condition of determining a common load range, acquiring a power range corresponding to each of a plurality of segments in the preset segmentation mode; And generating a common segment based on the common load range under the condition that the power range corresponding to each segment does not contain the common load range.
7. 7. The control method of a gas water heating apparatus according to claim 6, characterized in that the control method of the gas water heating apparatus further comprises: in the event that the power range of at least one of the plurality of segments includes the common load range, determining any one of the at least one segment as a common segment.
8. 8. The control method of a gas water heating apparatus according to claim 6, characterized in that the control method of the gas water heating apparatus further comprises: and determining a segment with the largest upper power limit among the at least one segment as a common segment when the power range of the at least one segment comprises the common load range.
9. 9. The control method of a gas water heating apparatus according to claim 6, characterized in that the control method of the gas water heating apparatus further comprises: And determining a segment with the largest power range span among the at least one segment as a common segment when the power range of the at least one segment comprises the common load range.
10. 10. The control method of a gas water heating apparatus according to claim 5, characterized in that the control method of the gas water heating apparatus further comprises: And recording water consumption data of a user of the gas water heating device in a preset period every preset time period so as to update the common load range.
11. 11. The control method of a gas water heating apparatus according to claim 5, characterized in that the control method of the gas water heating apparatus further comprises: and under the condition that a second preset condition is met, recording user water consumption data in a preset period of the gas water heating device from the current moment to update the common load range.
12. 12. The control method of a gas water heater according to claim 11, wherein the second preset condition includes at least one of: The temperature difference change exceeds a first preset temperature difference range, wherein the temperature difference is the difference between the set temperature and the water inlet temperature; the water consumption changes beyond a preset water consumption range.
13. 13. The control method of a gas water heating apparatus according to claim 12, wherein determining and storing a common load range based on the user water consumption data in the preset period includes: calculating load values at a plurality of moments in the preset period based on the water inlet temperature, the set temperature and the water inlet flow rate at the plurality of moments in the preset period to obtain load data in the preset period; and determining a common load range based on the load data in the preset period.
14. 14. The control method of a gas water heater according to claim 13, wherein determining a common load range based on the load data in the preset period comprises: screening load data meeting a third preset condition from the load data in the preset period; And determining a common load range based on the screened load data.
15. 15. The control method of a gas water heater according to claim 14, wherein the third preset condition includes at least one of: The load value is within a preset load range; The water inflow is within the preset water inflow range; The temperature difference change is smaller than a preset temperature difference, and the temperature difference is the difference between the set temperature and the water inlet temperature.
16. 16. The control method of a gas water heater according to claim 13, wherein determining a common load range based on the load data in the preset period comprises: dividing the preset period into a plurality of time periods; And determining a common load range corresponding to each time period based on the load data in each time period in the plurality of time periods.
17. 17. A control method of a gas water heater according to claim 3, wherein the common load range includes a common load range corresponding to each of a plurality of time periods; Correspondingly, acquiring the common load range corresponding to the gas water heating device comprises the following steps: Determining a target time period corresponding to the current moment; And acquiring a common load range of the gas water heating device in the target time period.
18. 18. The control method of a gas water heating apparatus according to claim 1, characterized in that the control method of the gas water heating apparatus further comprises: and controlling the combustion device to burn according to a preset segmentation mode under the condition that the current required load is not in the pre-acquired common load range.
19. 19. The control method of a gas water heating apparatus according to claim 18, further comprising, when the combustion apparatus is controlled to burn in a preset stepwise manner, Determining whether the current required load is within the common load range or not under the condition that a fourth preset condition is met; And controlling the combustion device to be switched to the burner or the burner combination corresponding to the common segment for combustion under the condition that the current required load is determined to be in the common load range.
20. 20. The control method of a gas water heater according to claim 19, wherein the fourth preset condition includes at least one of: the inflow water flow rate change or the outflow water flow rate change exceeds a first preset flow rate range; The temperature difference change exceeds a second preset temperature difference range, and the temperature difference is the difference between the set temperature and the water inlet temperature.

Description

Control method of gas water heater and gas water heater Technical Field The specification relates to the technical field of water heating devices, in particular to a control method of a gas water heating device and the gas water heating device. Background The prior gas water heater generally adopts sectional combustion. The sectional type combustion gas water heater is to divide a plurality of groups of burners, the combustion power of the burners is controlled by the number of the groups of burners participating in combustion, and each division can comprise one group of burners or a plurality of groups of burners. When the water demand or the water environment of a user changes, the current segmentation technical scheme generally needs to be used for segmentation operation, so that the fluctuation of the water outlet temperature is large, and the constant temperature experience of the user is affected. In view of the above problems, no effective solution has been proposed at present. Disclosure of Invention The embodiment of the specification provides a control method of a gas water heating device and the gas water heating device, which can solve the problem that the water outlet temperature fluctuation is large due to frequent cutting of the gas water heating device when the water demand or the water environment changes in the prior art, and can improve the constant temperature experience of a user. The embodiment of the specification provides a control method of a gas water heating device, wherein the gas water heating device comprises a combustion device, the combustion device comprises at least two groups of burners, and the control method of the gas water heating device comprises the following steps: Under the condition that a first preset condition is met, determining whether the current required load is within a pre-acquired common load range; and if so, controlling a burner or a burner combination corresponding to the common section to burn, wherein the power range corresponding to the common section comprises the common load range. In one embodiment, the first preset condition includes receiving a water use signal from a user. In one embodiment, determining whether the current desired load is within a pre-acquired common load range includes: acquiring a common load range corresponding to the gas water heating device; And under the condition that a common load range corresponding to the gas water heating device is obtained, determining whether the current required load is in the common load range. In one embodiment, the control method of the gas water heating device further comprises: and under the condition that the common load range corresponding to the gas water heating device is not obtained, controlling the combustion device to burn according to a preset segmentation mode. In one embodiment, the control method of the gas water heating device further comprises: recording water consumption data of a user of the gas water heating device in a preset period under the condition that a common load range corresponding to the gas water heating device is not acquired; and determining a common load range based on the user water data in the preset period. In one embodiment, the control method of the gas water heating device further comprises: under the condition of determining a common load range, acquiring a power range corresponding to each of a plurality of segments in the preset segmentation mode; And generating a common segment based on the common load range under the condition that the power range corresponding to each segment does not contain the common load range. In one embodiment, the control method of the gas water heating device further comprises: in the event that the power range of at least one of the plurality of segments includes the common load range, determining any one of the at least one segment as a common segment. In one embodiment, the control method of the gas water heating device further comprises: and determining a segment with the largest upper power limit among the at least one segment as a common segment when the power range of the at least one segment comprises the common load range. In one embodiment, the control method of the gas water heating device further comprises: And determining a segment with the largest power range span among the at least one segment as a common segment when the power range of the at least one segment comprises the common load range. In one embodiment, the control method of the gas water heating device further comprises: And recording water consumption data of a user of the gas water heating device in a preset period every preset time period so as to update the common load range. In one embodiment, the control method of the gas water heating device further comprises: and under the condition that a second preset condition is met, recording user water consumption data in a preset period of the gas water heating device from the current moment to update