Operation method of water heater and water heater

Abstract

The invention discloses an operation method of a water heater and the water heater. The operation method of the water heater comprises the following steps that S1, the water heater is in a standby state; s2, judging whether Q is greater than or equal to Qk, if so, entering S3, and if not, returning to S1; s3, the water heater is ignited to operate; s4, the water flow Q is recorded once every first preset time T1; s5, judging whether Q is less than Qk or not, if so, entering S6, and if not, returning to S4; s6, fire of the water heater is turned off; s7, whether Q is larger than Q0 or not is judged, if yes, the water flow opening degree is adjusted to the minimum gear through a water flow controller of the water heater, and the step S8 is executed; s8, whether Q is detected to be larger than or equal to Qk after second preset time T2 is judged, if yes, the step S9 is executed, and if not, the water flow controller resets the water flow opening degree to the initial opening degree and returns to the step S1; s9, the water heater is ignited to operate; wherein Q is the actual water flow; qk is the preset starting water flow; q0 is the preset water flow; q0 > Qk.

Description

Technical Field

[0001] This invention relates to the field of home appliance technology, and in particular to an operating method for a water heater and a water heater. Background Technology

[0002] When a user turns off the water heater and then turns it back on, there is a delay of about 3 seconds due to the controller's discharge and ignition delay. During this time, the cold water cannot be effectively heated and flows out of the water heater, causing a large fluctuation in the temperature of the water when the user uses it again, which seriously affects the user's experience.

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

[0004] This invention aims to at least partially solve one of the problems existing in the prior art. To this end, this invention proposes a method for operating a water heater. By recording the actual water flow rate Q before turning off the water midway, when Q > Q0, it indicates that the water flow rate is within the normal range. At this time, the water flow controller adjusts the opening of the water flow rate to the minimum level, thereby reducing the water flow rate entering the heat exchanger of the water heater for heat exchange. This allows the cold water entering the water heater to be heated to the set temperature more quickly, thereby improving the problem of sudden water temperature drop caused by turning off the water midway in the prior art.

[0005] The above objectives are achieved through the following technical solutions:

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

[0007] S1: Water heater in standby mode;

[0008] S2: Determine if Q≥Qk. If yes, proceed to S3; otherwise, return to S1.

[0009] S3: Water heater ignition and operation;

[0010] S4: Record the water flow rate Q every first preset time T1;

[0011] S5: Determine if Q < Qk. If yes, proceed to S6; otherwise, return to S4.

[0012] S6: Turn off the water heater;

[0013] S7: Determine if Q > Q0. If so, adjust the water flow opening to the minimum level through the water flow controller of the water heater and proceed to S8.

[0014] S8: Determine whether Q≥Qk is detected after the second preset time T2. If yes, proceed to S9. If no, the water flow controller resets the water flow opening to the initial opening and returns to S1.

[0015] S9: Water heater ignition and operation;

[0016] Where: Q is the actual water flow rate; Qk is the preset start-up water flow rate; Q0 is the preset water flow rate; Q0 > Qk.

[0017] Optionally, the following steps are included after S9:

[0018] S91: Detect the outlet water temperature t1 after the third preset time T3;

[0019] S92: Determine whether t1≥t01-t. If yes, the water flow controller resets the water flow opening to the initial opening. If no, repeat S12.

[0020] Where t01 is the temperature set by the user, and 1K≤t≤4K.

[0021] Optionally, 5s≤T3≤15s.

[0022] Optionally, in S7, if Q≤Q0, then proceed to the following steps:

[0023] S81: Determine whether Q≥Qk is detected after the second preset time T2. If yes, return to S3; otherwise, return to S1.

[0024] Optionally, 1min ≤ T2 ≤ 5min.

[0025] Optionally, 5s≤T1≤15s.

[0026] Optionally, Q0 ≥ 5 L / min.

[0027] Another aspect of the present invention provides a water heater, including a heat exchanger, a hot water pipe and a water flow controller. The cold water end of the hot water pipe is connected to a tap water pipe outside the water heater, and the hot water end of the hot water pipe passes through the heat exchanger and is connected to a hot water usage point. The water flow controller is installed on the cold water end of the hot water pipe.

[0028] Optionally, the water flow controller is a water flow servo or a water flow sensor with a solenoid valve.

[0029] Compared with the prior art, the present invention has at least the following beneficial effects:

[0030] The water heater operation method provided by this invention records the actual water flow rate Q before turning off the water midway. When Q > Q0, it indicates that the water flow rate is within the normal range. At this time, the water flow controller adjusts the opening of the water flow rate to the minimum level, thereby reducing the water flow rate entering the heat exchanger of the water heater for heat exchange. This allows the cold water entering the water heater to be heated to the set temperature more quickly, thereby improving the problem of sudden drop in water temperature caused by turning off the water midway in the prior art. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the steps of the water heater operation method provided in a specific embodiment of the present invention;

[0032] Figure 2 This is one of the structural schematic diagrams of a water heater provided in a specific embodiment of the present invention;

[0033] Figure 3 This is the second structural schematic diagram of the water heater provided in a specific embodiment of the present invention.

[0034] In the picture:

[0035] 1. Heat exchanger; 21. Water flow servo; 22. Water flow sensor with solenoid valve; 3. Hot water pipe. Detailed Implementation

[0036] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific embodiments of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solutions claimed in the present invention.

[0037] Please refer to Figure 1 The present invention provides a method for operating a water heater, comprising the following steps:

[0038] S1: Water heater in standby mode;

[0039] S2: Determine if Q≥Qk. If yes, proceed to S3; otherwise, return to S1.

[0040] S3: Water heater ignition and operation;

[0041] S4: Record the water flow rate Q every first preset time T1;

[0042] S5: Determine if Q < Qk. If yes, proceed to S6; otherwise, return to S4.

[0043] S6: Turn off the water heater;

[0044] S7: Determine if Q > Q0. If so, adjust the water flow opening to the minimum level through the water flow controller of the water heater and proceed to S8.

[0045] S9: Determine whether Q≥Qk is detected after the second preset time T2. If yes, proceed to S9. If no, the water flow controller resets the water flow opening to the initial opening and returns to S1.

[0046] S9: Water heater ignition and operation;

[0047] Where: Q is the actual water flow rate; Qk is the preset start-up water flow rate; Q0 is the preset water flow rate; Q0 > Qk.

[0048] The water heater operation method provided by this invention records the actual water flow rate Q before turning off the water midway. When Q > Q0, it indicates that the water flow rate is within the normal range. At this time, the water flow controller adjusts the opening of the water flow rate to the minimum level, thereby reducing the water flow rate entering the heat exchanger of the water heater for heat exchange. This allows the cold water entering the water heater to be heated to the set temperature more quickly, thereby improving the problem of sudden drop in water temperature caused by turning off the water midway in the prior art.

[0049] Optionally, the following steps are included after S9:

[0050] S91: Detect the outlet water temperature t1 after the third preset time T3;

[0051] S92: Determine whether t1≥t01-t. If yes, the water flow controller resets the water flow opening to the initial opening to ensure that the water flow can be increased to the maximum flow as soon as possible to meet the user's demand for high-flow hot water. If not, repeat S12.

[0052] Where t01 is the temperature set by the user, 1K≤t≤4K, and t is preferably 2K.

[0053] Optionally, 5s ≤ T3 ≤ 15s. Preferably, in this embodiment, T3 is 10s.

[0054] Optionally, in S7, if Q≤Q0, it means that the water flow rate was too low when the water was turned off and the fire was extinguished midway. In this case, there is no need to adjust the flow rate opening, and you can directly proceed to the following steps:

[0055] S81: Determine whether Q≥Qk is detected after the second preset time T2. If yes, it means that the actual water flow Q has reached the start-up water flow, and then return to S3. If no, it means that the actual water flow Q has not reached the start-up water flow, and then return to S1.

[0056] Optionally, 1 min ≤ T2 ≤ 5 min. Preferably, in this embodiment, T2 is 3 min.

[0057] Optionally, 5s ≤ T1 ≤ 15s. Preferably, in this embodiment, T1 is 10s.

[0058] Optionally, Q0 ≥ 5 L / min.

[0059] Optionally, Qk is 2 L / min.

[0060] Please refer to Figure 2 In another aspect, the present invention provides a water heater, including a heat exchanger 1, a hot water pipe 3 and a water flow controller. The cold water end of the hot water pipe 3 is connected to the tap water pipe outside the water heater, and the hot water end of the hot water pipe 3 passes through the heat exchanger 1 and is connected to the hot water point. The water flow controller is installed on the cold water end of the hot water pipe 3.

[0061] Optionally, the water flow controller is a water flow servo 21.

[0062] In other embodiments, such as Figure 3 As shown, the water flow controller can also be a water flow sensor 22 with a solenoid valve.

[0063] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A method for operating a water heater, characterized in that, The method comprises the following steps: S1: standby of the water heater; S2: determining whether Q≥Qk, if yes, entering S3, if no, returning to S1; S3: ignition operation of the water heater; S4: recording water flow Q every first preset time T1; S5: determining whether Q S6: turning off the water heater; S7: determining whether Q>Q0, if yes, adjusting the water flow opening degree to the minimum position by the water flow controller of the water heater and entering S8; S8: determining whether Q≥Qk is detected after the second preset time T2, if yes, entering S9, if no, resetting the water flow opening degree to the initial opening degree by the water flow controller and returning to S1; S9: ignition operation of the water heater; Wherein, Q is the actual water flow; Qk is the preset start-up water flow; Q0 is the preset water flow; Q0>Qk.

2. The method of operating a water heater of claim 1, wherein, After S9, the following steps are further included: S91: detecting water temperature t1 after the third preset time T3; S92: determining whether t1≥t01-t, if yes, resetting the water flow opening degree to the initial opening degree by the water flow controller, if no, repeating S12; Wherein, t01 is the temperature set by the user, 1K≤t≤4K.

3. The method of operating a water heater of claim 2, wherein, 5s≤T3≤15s.

4. The method of operating a water heater of claim 1, wherein, In S7, if Q≤Q0, the following steps are entered: S71: determining whether Q≥Qk is detected after the second preset time T2, if yes, returning to S3, if no, returning to S1.

5. A method of operating a water heater as claimed in any one of claims 1 to 4, wherein, 1min≤T2≤5min.

6. A method of operating a water heater as claimed in any one of claims 1 to 4, wherein, 5s≤T1≤15s.

7. A method of operating a water heater as claimed in any one of claims 1 to 4, wherein, Q0≥5L / min.

8. A water heater, characterized by The water heater comprises a heat exchanger (1), a hot water pipe (3) and a water flow controller (2), the cold water end of the hot water pipe (3) is communicated with the water pipe outside the water heater, the hot water end of the hot water pipe (3) is communicated with the hot water point after penetrating through the heat exchanger (1), and the water flow controller (2) is installed on the cold water end of the hot water pipe (3).

9. The water heater of claim 8, wherein, The water flow controller (2) is a water quantity servo or a water flow sensor with a solenoid valve.

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