Operation method of gas water heater and gas water heater

Abstract

The invention discloses an operation method of a gas water heater and the gas water heater, and the operation method of the gas water heater comprises the following steps: S1, collecting and calculating a counter-impact water flow A, calculating a first self-adaptive starting water flow L1 through the counter-impact water flow A, collecting and calculating a water flow value B during normal water use, and calculating a second self-adaptive starting water flow L1 through the first self-adaptive starting water flow L1; calculating a second self-adaptive starting flow L2 through the water flow B during normal water use; and S2, the gas water heater starts an ignition combustion program according to the size relation between the real-time water flow L real-time 3 in the normal operation process and the first self-adaptive starting water flow L1 and the second self-adaptive starting water flow L2. According to the operation method of the gas water heater, the problem that the gas water heater is started by mistake due to the fact that a user closes cold water and the reverse impact flow of the cold water is larger than the starting flow L of the gas water heater can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an operating method of a gas water heater and a gas water heater. Background Art

[0002] The starting principle of the gas water heater is: a water flow sensor is installed inside the gas water heater. When the user turns on the water, the water flows through the internal pipes of the gas water heater. The water flow sensor converts the water flow into a numerical value and sends it to the main control board of the gas water heater. When the main control board detects that the water flow reaches the start-up flow set for the gas hot water, the gas water heater immediately starts the fan and opens the gas valve, starts burning, and heats the cold water into hot water. However, the water pressure in some users' homes is relatively high. When the user runs out of cold water and turns off the faucet, a reverse impact water flow will be generated, which will enter the gas water heater from the hot water pipe. When the reverse impact water flow reaches the set start-up flow, it will cause the gas water heater to suddenly start and ignite, and then instantly go out, causing the user to mistakenly believe that the gas water heater is igniting for no reason and judge that the gas water heater has a fault.

[0003] Therefore, there is an urgent need for an operating method of a gas water heater to solve the above problems. Summary of the invention

[0004] The present invention aims to solve at least one of the problems existing in the prior art to a certain extent. To this end, the present invention proposes an operating method for a gas water heater, by collecting and calculating a back-impact water flow A, obtaining a first adaptive starting water flow L1 by calculating the back-impact water flow A, collecting and calculating a water flow value B during normal water use, and obtaining a second adaptive starting flow L2 by calculating the water flow B during normal water use, so that when the gas water heater is turned on and operated, when the real-time water flow L 实时3 When both are greater than the first adaptive starting water flow L1 and the second adaptive starting water flow L2, the ignition and combustion program is started, thereby avoiding the situation where the cold water back-impact flow is greater than the startup flow L of the gas water heater due to the user turning off the cold water. 开机 This causes the gas water heater to start up incorrectly.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A method for operating a gas water heater comprises the following steps:

[0007] S1: Collect and calculate the anti-shock water flow A, calculate the first adaptive starting water flow L1 through the anti-shock water flow A, collect and calculate the water flow value B during normal water use, and calculate the second adaptive starting flow L2 through the water flow B during normal water use;

[0008] S2: The gas water heater is based on the real-time water flow rate L during normal operation.实时3 The relationship between the first adaptive starting water flow rate L1 and the second adaptive starting water flow rate L2 starts the ignition and combustion program.

[0009] Optionally, in S1, collecting and calculating the back-shock water flow rate A, and obtaining the first adaptive starting water flow rate L1 by calculating the back-shock water flow rate A comprises the following steps:

[0010] S11: Obtain multiple reverse impact water flow values ​​A;

[0011] S12: Save the latest n reverse impact water flow values ​​A1, A2...An;

[0012] S13: Select A1, A2, ..., An that is greater than the first preset flow rate L 设1 The maximum value Amax among the selected values ​​is used as the first adaptive starting flow rate L1;

[0013] Among them, L 设1 <L2.

[0014] Optionally, S11 includes the following steps:

[0015] S111: gas water heater standby;

[0016] S112: Determine whether there is a water flow signal. If yes, start timing the first preset time t1 and enter S113. If no, repeat S112;

[0017] S113: Determine whether L 实时1 >L 开机 If yes, then record the real-time water flow L every second preset time t2 实时1 , the maximum value of L 实时1 As the reverse impact water flow value A, then enter S114, if not, directly enter S114;

[0018] S114: Determine whether t1 ≥ t01. If so, stop the current L 实时1 If not, return to S113;

[0019] Among them, L 实时1 To obtain the real-time water flow during the reverse impact water flow value A, L 开机 is the startup water flow of the gas water heater, and t01 is the first set duration.

[0020] Optionally, in S1, collecting and calculating a water flow value B during normal water use, and obtaining a second adaptive starting flow L2 by calculating the water flow value B during normal water use includes the following steps:

[0021] S21: Obtaining water flow value B during multiple normal water use;

[0022] S22: Save the latest m water flow values ​​B1, B2, ..., Bm during normal water use;

[0023] S23: Select the minimum value Bmin among B1, B2, ..., Bm, and use k%×Bmin as the second adaptive starting flow rate L2;

[0024] Among them, 40%≤k%≤60%.

[0025] Optionally, k%=50%.

[0026] Optionally, S21 includes the following steps:

[0027] S211: gas water heater standby;

[0028] S212: Determine whether there is a water flow signal. If yes, start timing the third preset time t3 and enter S213. If no, repeat S212.

[0029] S213: Determine whether t01 < t3, if yes, proceed to S214, if no, repeat S213;

[0030] S214: Determine whether L 实时2 >L 开机 , and t3<t02, if yes, then go to S215, if no, then go to S217;

[0031] S215: Record the real-time water flow L every fourth preset time t4 实时2 , calculate multiple L 实时2 The average value L 平均 ;

[0032] S216: Determine whether the L average is equal to any L 实时2 The difference between them is less than the second preset flow rate L 设2 If so, then L 平均 As the water flow rate B during normal water use, if not, proceed to S217;

[0033] S217: Stop this attack on L 实时2 records;

[0034] Among them, t02 is the second set time, L 实时2 To obtain the real-time water flow rate during the process of obtaining the water flow rate B during normal water use, t01<t02, and 2s≤t02-t01≤10s.

[0035] Optionally, 3s≤t01≤10s, 5s≤t02≤20s.

[0036] Optionally, S2 includes the following steps:

[0037] S200: Gas water heater standby:

[0038] A201: Determine whether there is a water flow signal. If yes, start timing the fifth preset time t5 and enter S202. If no, repeat S201.

[0039] S202: Determine whether t5>t03, if yes, proceed to S204, if no, proceed to S203;

[0040] S203: Determine whether L 实时3 >L1, and L 实时3 > L2, if yes, ignite and burn, if no, return to S202;

[0041] S204: Determine whether L 实时3 >L 开机 If yes, ignite and burn, if no, return to S200;

[0042] Among them, t03 is the third preset duration.

[0043] Optionally, 2s≤t03≤4s.

[0044] Another aspect of the present invention provides a gas water heater, which is operated by the above-mentioned gas water heater operation method.

[0045] Compared with the prior art, the present invention has at least the following beneficial effects:

[0046] The operating method of the gas water heater provided by the present invention collects and calculates the back-impact water flow A, obtains the first adaptive starting water flow L1 by calculating the back-impact water flow A, collects and calculates the water flow value B during normal water use, and obtains the second adaptive starting flow L2 by calculating the water flow B during normal water use, so that when the gas water heater is turned on and operated, when the real-time water flow L 实时3 When both are greater than the first adaptive starting water flow L1 and the second adaptive starting water flow L2, the ignition and combustion program is started, thereby avoiding the situation where the cold water back-impact flow is greater than the startup flow L of the gas water heater due to the user turning off the cold water. 开机 This causes the gas water heater to start up incorrectly. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is one of the step diagrams of the operating method of the gas water heater provided by the present invention;

[0048] Figure 2 This is the second step diagram of the operating method of the gas water heater provided by the present invention;

[0049] Figure 3 This is the third step diagram of the operating method of the gas water heater provided by the present invention;

[0050] Figure 4 This is the fourth step diagram of the operating method of the gas water heater provided by the present invention;

[0051] Figure 5 This is the fifth step diagram of the operating method of the gas water heater provided by the present invention;

[0052] Figure 6 This is the sixth step diagram of the operating method of the gas water heater provided by the present invention. DETAILED DESCRIPTION

[0053] The following examples illustrate the present invention, but the present invention is not limited to these examples. Modifications to the specific embodiments of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed by the present invention.

[0054] Please refer to Figure 1 The present invention provides an operating method of a gas water heater, comprising the following steps:

[0055] S1: Collect and calculate the anti-shock water flow A, calculate the first adaptive starting water flow L1 through the anti-shock water flow A, collect and calculate the water flow value B during normal water use, and calculate the second adaptive starting flow L2 through the water flow B during normal water use;

[0056] S2: Real-time water flow rate L during normal operation of the gas water heater 实时3 When both are greater than the first adaptive starting water flow rate L1 and the second adaptive starting water flow rate L2, the ignition and combustion program is started.

[0057] The operating method of the gas water heater provided by the present invention collects and calculates the back-impact water flow A, obtains the first adaptive starting water flow L1 by calculating the back-impact water flow A, collects and calculates the water flow value B during normal water use, and obtains the second adaptive starting flow L2 by calculating the water flow B during normal water use, so that when the gas water heater is turned on and operated, when the real-time water flow L 实时3 When both are greater than the first adaptive starting water flow L1 and the second adaptive starting water flow L2, the ignition and combustion program is started, thereby avoiding the situation where the cold water back-impact flow is greater than the startup flow L of the gas water heater due to the user turning off the cold water. 开机 This causes the gas water heater to start up incorrectly.

[0058] Please refer to Figure 2Optionally, in S1, collecting and calculating the back-impact water flow rate A, and obtaining the first adaptive starting water flow rate L1 by calculating the back-impact water flow rate A includes the following steps:

[0059] S11: Obtain multiple reverse impact water flow values ​​A;

[0060] S12: Save the latest n reverse impact water flow values ​​A1, A2...An. By saving the latest n reverse impact water flow values ​​A1, A2...An, the solution can obtain the corresponding reverse impact water flow value A according to the different water pressures in the user's home at different times, thereby realizing the self-adaptation function of the gas water heater to the actual water pressure;

[0061] S13: Select A1, A2, ..., An that is greater than the first preset flow rate L 设1 and taking the maximum value Amax among the selected values ​​as the first adaptive starting flow rate L1, thereby improving the accuracy of the first adaptive starting flow rate L1;

[0062] Among them, L 设1 <L2.

[0063] Optionally, 3≤n≤8, and in this embodiment, n is 5.

[0064] Please refer to Figure 3 Optionally, S11 includes the following steps:

[0065] S111: gas water heater standby;

[0066] S112: Determine whether there is a water flow signal. If yes, start timing the first preset time t1 and enter S113. If no, repeat S112;

[0067] S113: Determine whether L 实时1 >L 开机 If yes, then record the real-time water flow L every second preset time t2 实时1 , the maximum value of L 实时1 As the reverse impact water flow value A, then enter S114, if not, directly enter S114;

[0068] S114: Determine whether t1 ≥ t01. If so, stop the current L 实时1 If not, return to S113;

[0069] Among them, L 实时1 To obtain the real-time water flow during the reverse impact water flow value A, L 开机 is the startup water flow of the gas water heater, and t01 is the first set duration.

[0070] Optionally, t2 is 0.2s. Of course, in other embodiments, t2 may also be other values ​​between 0.15s-3s, which is not limited here.

[0071] Please refer to Figure 4 Optionally, in S1, collecting and calculating the water flow value B during normal water use, and obtaining the second adaptive starting flow L2 by calculating the water flow B during normal water use includes the following steps:

[0072] S21: Obtaining water flow value B during multiple normal water use;

[0073] S22: Save the latest m water flow values ​​B1, B2, ..., Bm during normal water use, so that the solution can obtain the corresponding water flow value B during normal water use according to the different water pressures in the user's home at different times, and realize the self-adaptation function of the gas water heater to the actual water pressure;

[0074] S23: selecting the minimum value Bmin among B1, B2, ..., Bm, and taking k%×Bmin as the second adaptive starting flow rate L2, thereby improving the accuracy of the first adaptive starting flow rate L2;

[0075] Among them, 40%≤k%≤60%.

[0076] Optionally, in this embodiment, k%=50%.

[0077] Optionally, S21 includes the following steps:

[0078] Please refer to Figure 5 , S211: gas water heater standby;

[0079] S212: Determine whether there is a water flow signal. If yes, start timing the third preset time t3 and enter S213. If no, repeat S212.

[0080] S213: Determine whether t01 < t3, if yes, proceed to S214, if no, repeat S213;

[0081] S214: Determine whether L 实时2 >L 开机 , and t3<t02, if yes, then go to S215, if no, then go to S217;

[0082] S215: Record the real-time water flow rate L every fourth preset time t4 实时2 , calculate multiple L 实时2 The average value L 平均 ;

[0083] S216: Determine whether L 平均 With any L 实时2The difference between them is less than the second preset flow rate L 设2 If so, then L 平均 as the water flow rate B during normal water use, so that the water flow rate B during normal water use obtained is a relatively stable value, thereby improving the judgment accuracy. If not, enter S217;

[0084] S217: Stop this attack on L 实时2 records;

[0085] Among them, t02 is the second set time, L 实时2 To obtain the real-time water flow rate during the process of obtaining the water flow rate B during normal water use, t01<t02, and 2s≤t02-t01≤10s.

[0086] Optionally, 3s≤t01≤10s, 5s≤t02≤20s.

[0087] Optionally, in this embodiment, t01 is 5 s and t02 is 10 s.

[0088] Optionally, 0.3s≤t4≤0.6s. In this embodiment, t4 is 0.5s.

[0089] Optionally, 0.5L / min≤L 实时2 ≤2L / min.

[0090] In this embodiment, it is 1 L / min.

[0091] Please refer to Figure 6 Optionally, S2 includes the following steps:

[0092] S200: Gas water heater standby:

[0093] A201: Determine whether there is a water flow signal. If yes, start timing the fifth preset time t5 and enter S202. If no, repeat S201.

[0094] S202: Determine whether t5>t03, if yes, proceed to S204, if no, proceed to S203;

[0095] S203: Determine whether L 实时3 >L1, and L 实时3 > L2, if yes, ignite and burn, if no, return to S202;

[0096] S204: Determine whether L 实时3 >L 开机 If yes, ignite and burn, if no, return to S200;

[0097] Among them, t03 is the third preset duration.

[0098] Optionally, 2s≤t03≤4s.

[0099] Optionally, in this embodiment, t03 is 2s.

[0100] Because users often deliberately open the tap to a small degree when taking hot water, the L2 value collected by the system is low (for example, when the tap is fully open, the L2 data is 12L / min, but users often half-open the tap, resulting in the machine collecting L2 data of only 6L / min. Specifically, there are two cases in which 6L / min and 12 / min are collected at the same time:

[0101] Case 1: 6L / min is the data for a single faucet fully opened, and 12L / min is the data for multiple faucets fully opened.

[0102] Case 2: 6L / min is the data for a single faucet half-opened, and 12L / min is the data for a single faucet fully opened.

[0103] At this time, the system cannot determine whether the actual situation is situation 1 or situation 2. However, since L1 has been limited to a value less than L2 in this embodiment, it will not ignite the combustion to avoid the reverse impact of water flow A, and will also mistakenly identify the lower L2 generated when the user half-opens a single faucet as L1.

[0104] Optionally, in this embodiment, L 设1 ≤5L / min. The premise for a household to turn on the gas water heater when the cold water is turned off is that the water pressure in the water pipe is relatively high, such as a water flow of more than ten liters per minute, while the normal household water flow is about 7L / min. However, the reverse impact water flow A in this case is only 3L / min to 4L / min, which is much smaller than the water flow B during normal water use. Therefore, in this embodiment, it is set that L 设1 ≤5L / min is more reasonable. If the reverse impact water flow A is greater than 5L / min, it means that the water pressure in the user's household pipeline is too high. Excessive water pressure will greatly increase the risk of damage to equipment on the water line. At this time, it is necessary to recommend that the user consider adding a pressure reducing valve at the water inlet end.

[0105] Another aspect of the present invention provides a gas water heater, which is operated by the above-mentioned gas water heater operation method.

[0106] Compared with the prior art, the present invention has at least the following beneficial effects.

[0107] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A method for operating a gas water heater, characterized in that: The following steps are involved: S1: Collect and calculate the anti-shock water flow A, calculate the first adaptive starting water flow L1 through the anti-shock water flow A, collect and calculate the water flow value B during normal water use, and calculate the second adaptive starting flow L2 through the water flow B during normal water use; S2: The gas water heater is based on the real-time water flow rate L during normal operation. 实时3 The relationship between the first adaptive starting water flow rate L1 and the second adaptive starting water flow rate L2 starts the ignition and combustion program.

2. The operating method of the gas water heater according to claim 1, characterized in that: In S1, collecting and calculating the back-impact water flow rate A, and obtaining the first adaptive starting water flow rate L1 by calculating the back-impact water flow rate A includes the following steps: S11: Obtain multiple reverse impact water flow values ​​A; S12: Save the latest n reverse impact water flow values ​​A1, A2...An; S13: Select A1, A2, ..., An that is greater than the first preset flow rate L 设1 The maximum value Amax among the selected values ​​is used as the first adaptive starting flow rate L1; Among them, L 设1 <L2.

3. The operating method of the gas water heater according to claim 2, characterized in that: S11 includes the following steps: S111: gas water heater standby; S112: Determine whether there is a water flow signal. If yes, start timing the first preset time t1 and enter S113. If no, repeat S112; S113: Determine whether L 实时1 >L 开机 If yes, then record the real-time water flow L every second preset time t2 实时1 , the maximum value of L 实时1 As the reverse impact water flow value A, then enter S114, if not, directly enter S114; S114: Determine whether t1 ≥ t01. If so, stop the current L 实时1 If not, return to S113; Among them, L 实时1 To obtain the real-time water flow during the reverse impact water flow value A, L 开机 is the startup water flow of the gas water heater, and t01 is the first set duration.

4. The operating method of the gas water heater according to claim 3, characterized in that: In S1, collecting and calculating the water flow value B during normal water use, and obtaining the second adaptive starting flow L2 by calculating the water flow B during normal water use includes the following steps: S21: Obtaining water flow value B during multiple normal water use; S22: Save the latest m water flow values ​​B1, B2, ..., Bm during normal water use; S23: Select the minimum value Bmin among B1, B2, ..., Bm, and use k%×Bmin as the second adaptive starting flow rate L2; Among them, 40%≤k%≤60%.

5. The operating method of the gas water heater according to claim 4, characterized in that: k％＝50％。 6. The operating method of the gas water heater according to claim 4, characterized in that: S21 includes the following steps: S211: gas water heater standby; S212: Determine whether there is a water flow signal. If yes, start timing the third preset time t3 and enter S213. If no, repeat S212. S213: Determine whether t01 < t3, if yes, proceed to S214, if no, repeat S213; S214: Determine whether L 实时2 >L 开机 , and t3<t02, if yes, then go to S215, if no, then go to S217; S215: Record the real-time water flow L every fourth preset time t4 实时2 , calculate multiple L 实时2 The average value L 平均 ; S216: Determine whether the L average is equal to any L 实时2 The difference between them is less than the second preset flow rate L 设2 If so, then L 平均 As the water flow rate B during normal water use, if not, proceed to S217; S217: Stop this attack on L 实时2 records; Among them, t02 is the second set time, L 实时2 To obtain the real-time water flow rate during the process of obtaining the water flow rate B during normal water use, t01<t02, and 2s≤t02-t01≤10s.

7. The operating method of the gas water heater according to claim 6, characterized in that: 3s≤t01≤10s, 5s≤t02≤20s.

8. The operating method of the gas water heater according to any one of claims 1 to 7, characterized in that: S2 includes the following steps: S200: Gas water heater standby: A201: Determine whether there is a water flow signal. If yes, start timing the fifth preset time t5 and enter S202. If no, repeat S201. S202: Determine whether t5>t03, if yes, proceed to S204, if no, proceed to S203; S203: Determine whether L 实时3 >L1, and L 实时3 > L2, if yes, ignite and burn, if no, return to S202; S204: Determine whether L 实时3 >L 开机 If yes, ignite and burn, if no, return to S200; Among them, t03 is the third preset duration.

9. The operating method of the gas water heater according to claim 8, characterized in that: 2s≤t03≤4s.

10. A gas water heater, characterized in that: The gas water heater is operated by the operating method according to any one of claims 1 to 9.

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